CN105666793B - A kind of gold-modeling combined housing molding die and its forming method - Google Patents

Abstract

The invention discloses a metal-plastic composite shell forming mold and a forming method thereof, comprising a plastic injection plate, a metal placement plate and an external control unit; the plastic injection plate is placed on one side of the metal placement plate, and the metal placement plate and the external control unit connection; the inside of the plastic injection plate is provided with an injection channel, and the concave surface at the bottom of the plastic injection plate communicated with the injection channel is used as a space for accommodating the injection molding melt; the upper surface of the metal placement plate is concave, and the metal substrate can be placed; Electric heating elements, cooling water channels and temperature sensors; placing the surface-treated metal substrate on the concave surface of the metal placement plate, and making a gold-plastic composite part through steps such as heating, injection, and cooling. Effectively organically combine metal substrates and plastics without using adhesives, which can ensure the connection strength between metals and plastics, and has strong applicability.

Description

A kind of gold-plastic composite shell molding die and its molding method

technical field

The invention belongs to the technical field of gold-plastic composite products, and relates to a molding die for a gold-plastic composite shell, and also relates to a molding method for a gold-plastic composite shell.

Background technique

With the continuous improvement of energy consumption and environmental protection, the manufacture and application of lightweight and high-strength components have received increasing attention in the fields of aerospace, automobile manufacturing, and communications. The use of aluminum/magnesium alloys, high-strength steel plates, polymers (plastics) and other materials to obtain engineering parts with low mass and high strength is a frontier hotspot of research at home and abroad in recent years. Parts made of various materials have their own advantages and fields of application. Metal-plastic composite high-strength parts have the advantages of high strength, small mass, and easy to form complex structures. They are used in aircraft interior parts, automobile bodies, computers and communications It has been gradually applied in fields such as the shell of the product, showing its broad prospects.

As we all know, aluminum, magnesium, titanium and other lightweight and high-strength materials are widely used in aviation, automobile manufacturing, communications, home appliances and other fields due to their high specific stiffness, specific strength and wear resistance. The research and development of high-strength steel plates in the field of automobile manufacturing Application is a common hotspot of research by scholars at home and abroad. However, due to the inherent characteristics of metal materials, there are disadvantages such as fast heat conduction, large thermal expansion coefficient, and difficulty in forming complex structures, which limit the application fields of the above-mentioned lightweight and high-strength alloys. As a rising star in the field of materials, plastic has become an indispensable material in modern social life. Plastic injection molding is to inject molten liquid with excellent flowability at high temperature into the cavity of the mold to form products. It has the advantages of simple forming and low cost. , has shown obvious advantages in the production of complex product structures, but plastic products have disadvantages such as poor dimensional stability, rigidity and low mechanical strength. Abandoning the forming shortcomings of metal substrates and plastic materials, organically combining the forming advantages of the two, and producing light-weight, high-strength metal-plastic products that meet the requirements of use and market demand is a new research topic that has emerged in recent years.

The Chinese patent with application number 200710200616.3 discloses a "connection structure between metal parts and plastic parts". This structure realizes the connection between metal parts and plastic parts by filling plastic melt into locking grooves processed in metal parts.

The Chinese patent application number 201010587963.8 discloses a "bonding method of metal and plastic composite parts and its finished product". The method is to apply glue on the metal substrate, and then inject the plastic on the inner surface of the metal substrate with glue On, so as to realize the connection of metal and plastic, and make metal and plastic products.

The Chinese patent application number 200810301527.2 discloses a "metal-plastic combination and its manufacturing method", including a metal body and a plastic part. By forming a positioning structure at the junction of the metal body and the plastic part, the insert molding technology is used for integral molding to realize the connection between the metal and the plastic.

The above-mentioned existing technologies either provide locking grooves or positioning structures on the metal substrate, or apply an adhesive on the surface of the metal substrate to realize the connection of metal and plastic, and make corresponding products, which have many processes, poor environmental protection and high strength. unstable situation.

Contents of the invention

The purpose of the present invention is to provide a metal-plastic composite shell forming mold, which can effectively combine the metal base material and the plastic organically, without using adhesives, can ensure the connection strength between the metal and the plastic, and has strong applicability.

Another object of the present invention is to provide a molding method of a metal-plastic composite shell molding die.

The technical solution adopted in the present invention is, a metal-plastic composite shell forming mold, including a plastic injection plate, a metal placement plate and an external control unit; the plastic injection plate is placed on one side of the metal placement plate, and the metal placement plate is connected to the metal placement plate The external control unit is connected; the plastic injection plate is provided with an injection channel, and the concave surface at the bottom of the plastic injection plate communicated with the injection channel is used as a space for accommodating the injection molding melt; the upper surface of the metal placement plate is concave, and the metal substrate is provided on the concave surface ; The inside of the metal placement plate is provided with an electric heating element, a cooling water channel and a temperature sensor, and the cooling water channel is respectively provided with a cooling water channel inlet and a cooling water channel outlet; the external control unit includes a water pump, an electric three-way valve, an electric two-way Valve, one-way valve, filter, pressure regulating filter, relay and temperature control main unit; the water inlet end of the water pump is connected to the cooling water pool through the filter, and the water outlet end of the water pump is connected to the inlet of the cooling water channel through the electric three-way valve; One outlet of the three-way valve is directly connected to the cooling water pool, one end of the electric two-way valve is connected to the compressed air source through a pressure regulating filter, and the other end of the electric two-way valve is connected to the inlet of the cooling water channel; the outlet of the cooling water channel passes through a one-way valve It is connected to the cooling water pool; the electric heating element, temperature sensor, and temperature display are respectively connected to the temperature control main unit, the electric heating element is connected to the AC power supply through the relay, the relay is connected to the temperature control main unit, and the electric three-way valve is connected to the temperature control main unit.

Further, the axis of the electric heating element and the axis of the cooling water channel are distributed in two planes and arranged vertically, and the distance between the electric heating element and the surface of the metal placing plate is not equal to the distance between the cooling water channel and the surface of the metal placing plate.

Further, the temperature control main unit is provided with a distributor; the injection molding machine is connected with the temperature control main unit.

Further, the diameter of the temperature sensor is 2-4mm, and the temperature sensor penetrates through the metal placement plate and is in direct contact with the metal substrate; the diameter of the cooling water channel is 8-10mm, and the diameter of the electric heating element is 6-10mm.

Further, the temperature control main unit includes a monitoring setter and a PLC, the signal output module and the digital receiving module are respectively connected to the PLC, and the A/D conversion module is connected to the digital receiving module.

Further, the distance between the cooling water channel and the electric heating element is 15-20mm; the distance between the cooling water channel and the concave surface of the plastic injection plate or the metal placing plate is 10-12mm, and the distance between the electric heating element and the concave surface of the metal placing plate is 2-6mm.

Another technical solution adopted by the present invention is that the molding method of the gold-plastic composite shell is carried out according to the following steps:

Step 1: surface treatment of the metal substrate;

First, use alkaline corrosion, anodic oxidation or mechanical sandblasting to form a nano-scale microporous structure on the forming surface of the metal substrate, with a pore size of 30 nanometers to 1 micron, and then put the treated metal substrate into the gold-plastic composite shell body forming mold;

Step 2, heating stage;

The temperature control main unit controls the electric heating element to heat the metal base material, making it heated to 85°C-115°C within 15-30s. At the same time, the temperature sensor obtains the surface temperature of the metal base material and feeds it back to the temperature control main unit to match the set temperature. When the actual temperature of the metal substrate does not reach the set value, the heating element continues to heat, and when the actual temperature of the metal substrate reaches the set value, the heating element stops heating;

Step 3, forming stage;

Use the injection machine to pass the injection melt through the injection channel set in the mold, and directly form the plastic structural features on the surface of the metal substrate; the temperature of the injection melt is 230-270 ° C, the injection pressure is 80-110 MPa, and the pressure is maintained after the injection is completed The time is 5-10s, and the cooling time is 20s-30s to ensure that the injection melt can fully enter the microporous structure on the surface of the metal substrate;

Step 4, cooling stage;

The temperature control main unit controls the cooling water channel to cool the metal substrate until the set temperature is reached;

Step 5, the workpiece is taken out;

After the injection molding melt is cooled and solidified on the surface of the metal base material, it forms an integrated structure with the metal base material, and is firmly combined, and it is ready to be taken out.

The beneficial effect of the present invention is to use the electric heating element buried inside the injection mold to heat the metal base material, use the cooling water passed through the cooling water channel to cool the mold and the metal base material, and know the temperature of the metal base material in the mold through the temperature sensor. Surface temperature changes, determine the time of heating, cooling, mold opening and other stages in the injection molding process, eliminate the condensation layer on the surface of the melt due to the large temperature difference between the high-temperature melt and the metal substrate, and avoid the condensation layer on the melt The impact of the body immersing into the tiny pores of the metal substrate. At the same time, the forming die can improve the bonding strength between the formed metal substrate and the plastic surface, eliminate the internal stress between materials caused by the temperature difference between the metal and plastic melt, and ensure product accuracy and quality.

Description of drawings

Fig. 1 is a structural schematic diagram of the external control unit of the metal-plastic composite housing molding die of the present invention.

Fig. 2 is a structural schematic diagram of the temperature control main unit.

Fig. 3 is a schematic diagram of the mold structure and its control principle of the present invention.

Fig. 4 is the example schematic diagram of the metal placement plate adopting the mold structure design of the present invention

Fig. 5 is a side view of Fig. 4 .

Among them: 1. Filter, 2. Water pump, 3. Electric three-way valve, 4. One-way valve, 5. Pressure regulating filter, 6. Electric two-way valve, 7. Temperature control main unit, 8. Distributor, 9. Relay, 11. Heating element, 12. AC power supply, 13. Temperature sensor, 14. Temperature indicator, 15. Injection molding machine, 16. Compressed air source, 17. Cooling water channel inlet, 18. Cooling water channel outlet, 19. Cooling water pool, 20. Cooling water channel, 21. Metal placement plate, 22. Plastic injection plate, 23. Metal substrate, 24. Injection melt, 25. PLC, 26. Monitoring setter, 27. Signal output module , 28, digital receiving module, 29, A/D conversion module.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

The molding process of the gold-plastic shell of the present invention is to firstly carry out surface treatment on the metal base material participating in the molding before injection molding to obtain micropore characteristics with a certain shape and size, and then place the metal base material 23 on the surface of the mould. The metal is placed in the plate 21, and the part where the plastic is injected on the surface of the metal substrate 23 is heated by the electric heating element 11 in the mold, and then the temperature detection and feedback adjustment are performed on the surface of the metal substrate 23 to make it reach the required temperature, and then the plastic The melt is injected onto the surface of the metal base material 23, and then subsequent forming processes such as pressure maintaining, cooling, mold opening and parts taking are performed.

A gold-plastic composite housing forming mold for realizing the above process includes a plastic injection plate 22, a metal placement plate 21 and an external control unit.

As shown in FIG. 3 , an electric heating element 11 , a cooling water channel 20 and a temperature sensor 13 are arranged inside the metal placement plate 21 . The cooling water channel 20 is respectively provided with a cooling water channel inlet 17 and a cooling water channel outlet 18 . The axis of the electric heating element 11 and the axis of the cooling water channel 20 are distributed in two planes and are vertically arranged in three dimensions. The distance between the electric heating element 11 and the surface of the metal placing plate 21 is not equal to the distance between the cooling water channel 20 and the surface of the metal placing plate 21 . The metal placing plate 21 is connected with the external control unit, and the mold is heated to make the metal base material 23 reach the set temperature, and the injection molding can be completed through the control of the external control unit.

In order to accurately control the temperature of the metal substrate during the production process, the mold of the present invention also includes an external control unit as shown in FIG. 1 . The water inlet end of the water pump 2 is connected with the cooling water pool 19 through the filter 1, and the water outlet end of the water pump 2 is connected with the cooling water channel inlet 17 through the electric three-way valve 3, so as to add cooling water to the cooling water channel; the electric three-way valve 3 One outlet is directly connected to the cooling water pool 19, so that when cooling water is not needed in the cooling water passage, the water flowing out of the water pump 2 is directly returned to the cooling water pool 19 by the electric three-way valve 3, and the flow of cooling water is controlled by the electric three-way valve 3 flow direction. One end of the electric two-way valve 6 is connected to the compressed air source 16 through the pressure regulating filter 5, and the other end of the electric two-way valve 6 is connected to the inlet 17 of the cooling water channel, so that air can be passed into the cooling water channel 20 to blow out all the cooling water . The outlet 18 of the cooling water channel is connected with the cooling water pool 19 through the one-way valve 4 . When the mold is heated, the one-way valve 4 prevents the cooling water from flowing back into the mold. The electric heating element 11, the temperature sensor 13, and the temperature display 14 are all connected to the temperature control main unit 7, the electric heating element 11 is connected to the AC power supply 12 through the relay 9, and the relay 9 is connected to the temperature control main unit 7 to realize the control of the temperature control main unit 7 The work of heating element 11. The temperature display instrument 14 is used for inputting control parameters such as temperature. A distributor 8 is arranged on the temperature control main unit 7 . The electric three-way valve 3 is connected with the temperature control main unit 7 .

Wherein, the structure of the temperature control main unit 7 is shown in FIG. 2 , including a monitoring setter 26 and a PLC 25 , a signal output module 27 and a digital receiving module 28 connected to the PLC 25 respectively, and an A/D conversion module 29 connected to the digital receiving module 28 .

During the forming process, the temperature indicator 14 inputs control parameters such as the temperature range of the metal substrate 23, and the temperature sensor 13 buried inside the mold measures the temperature of the metal substrate 23. If the temperature is not within the set high temperature range ( The optimum bonding strength temperature between the injection molding melt 24 and the metal substrate 23 is generally 80-180°C), then the temperature control main unit 7 controls the relay 9 to supply power to the electric heating element 11, and uses the electric heating element 11 to quickly heat the metal placement plate 21 Make the temperature of the metal substrate 23 within the temperature range. After the temperature of the metal substrate 23 reaches the set temperature, the temperature indicator 14 sends a signal to the temperature control main unit 7 that it is ready, and the temperature control main unit 7 sends a signal to the injection molding machine 15 that it can be molded, and the injection molding is completed to complete the molding process; after the injection molding is completed, after the temperature control main unit 7 receives the signal of the injection molding machine 15, it controls the switching state of the electric three-way valve 3, allowing the cooling water to enter the cooling water channel inlet 17 of the metal placement plate 21, and utilize the cooling water to cool the metal The placing plate 21 is cooled rapidly, and when the temperature of the metal placing plate 21 is cooled to within the set temperature range, the temperature control main unit 7 sends a signal to the injection molding machine 15 that the mold can be opened, and the molded parts are taken out. At the same time, the temperature control main unit 7 receives the mold opening signal from the injection molding machine 15 to control the switching state of the electric three-way valve 3 so that the cooling water returns to the cooling water pool 19 directly. Control electric two-way valve 6 to open simultaneously, the air of compressed air source 16 enters cooling water channel 20 by the cooling water passage entrance 17 of metal placement plate 21 through pressure regulating filter 5 and electric two-way valve 6, puts metal placement plate 21 The remaining cooling water is blown back to the cooling water pool 19 through the cooling water channel outlet 18 and the one-way valve 4. After the compressed air enters the metal placing plate 21 for 2-3 seconds, the external control unit supplies power to the electric heating element 11, and then enters the next forming cycle.

Fig. 4 shows a schematic structural view of the metal placement plate of the gold-plastic housing molding die with the structure of the present invention.

Wherein the diameter of the temperature sensor 13 is 2-4mm, the temperature sensor 13 penetrates the metal placement plate 21 and directly contacts the metal substrate 23; the diameter of the cooling water channel 20 is 8-10mm, and the diameter of the heating element 11 is 6-10mm. The cooling water channel 20 is 10-12mm away from the concave surface of the plastic injection plate 22 and the metal placing plate 21, the electric heating element 11 is 2-6mm away from the concave surface of the metal placing plate 21, and the distance between the cooling water channel 20 and the electric heating element 11 is 15-20mm.

Due to the metal-plastic composite molding process, when the injection molding melt 24 (i.e. plastic melt) is in contact with the metal substrate 23, if the temperature of the metal substrate 23 is low, the heat between the plastic melt and the surface of the metal substrate 23 The transfer will cause the surface melt in contact with the metal substrate 23 to drop rapidly, causing the plastic melt on the surface to solidify rapidly to form a condensation layer. The existence of the condensed layer will prevent the plastic melt from infiltrating into the micropores of the metal substrate 23 , thereby affecting the interface bonding between the plastic melt and the metal substrate 23 . In addition, if the temperature of the metal substrate 23 is too low during the filling process, the cooling rate of the plastic melt will be uneven, which will cause a large stress concentration at the joint between the plastic melt and the metal substrate 23, further affecting the plastic melt and metal. Interfacial bonding of the substrate 23 . When the temperature of the metal substrate 23 is higher than the glass transition temperature or melting point of the plastic melt, the surface condensation layer of the plastic melt will become thinner or disappear. Within a certain range, as the temperature of the metal substrate 23 increases, the viscosity of the plastic melt gradually decreases, and the fluidity of the plastic melt improves, which is conducive to filling the tiny holes on the surface of the metal substrate 23 with the plastic melt, ensuring interface of the two.

According to the above metal-plastic forming process and the requirements on the temperature of the metal sheet, a forming method of a metal-plastic composite shell forming die is invented.

details as follows:

Step 1: surface treatment of the metal substrate 23;

First utilize alkaline solution corrosion or anodic oxidation or the mode of mechanical sandblasting to form nanoscale microporous structure on the forming surface of metal substrate 23, aperture 30 nanometers to 1 micron, then put the processed metal substrate 23 into the present invention Gold-plastic composite shell forming mold;

Step 2, heating phase

The temperature control main unit 7 controls the electric heating element 11 to heat the metal base material 23, making it heated to 85-115°C within 15-30s. At the same time, the temperature sensor 13 obtains the surface temperature of the metal base material 23 and feeds it back to the temperature control main unit 7 Compared with the set temperature value (assumed to be 110 degrees Celsius), when the actual temperature of the metal substrate 23 did not reach the set value, the electric heating element 11 continued to heat, and when the actual temperature of the metal substrate 23 reached the set value, the electric heating Element 11 stops heating;

Step 3, forming stage;

Using the injection machine 15, the injection melt 24 passes through the gating system set in the mold to directly form plastic structural features on the surface of the metal substrate 23. The temperature of the injection molding melt 24 is 230-270°C, the injection pressure is 80-110MPa, the holding time after injection is 5-10s, and the cooling time is 20s-30s, so as to ensure that the injection molding melt 24 can fully enter the microscopic particles on the surface of the metal substrate 23. Pore structure, improve the bonding strength of plastic and metal surface;

Step 4, cooling stage;

The temperature control main unit 7 controls the cooling water channel 20 to cool the metal substrate 23 until the set temperature (70° C.) is reached. The temperature control main unit 7 not only ensures the signal control of the temperature control system itself but also realizes signal interaction with the injection molding machine 15 to ensure the smooth progress of the molding process;

Step 5, the workpiece is taken out;

After the injection molding melt 24 is cooled and solidified on the surface of the metal base material 23 , it forms an integral structure with the metal base material 23 and is firmly combined.

Through this method, the organic combination of the metal substrate 23 and the plastic (injection melt 24 ) can be realized without using adhesives, and the harmful gas released by the adhesives is avoided from causing bodily harm to operators. The outer surface of the product is made by using the metal base material 23, which can meet the wall thickness, strength and appearance requirements of the product. The inner surface of the product made of plastic can play the role of shock absorption and heat insulation. At the same time, due to the easy fluidity of the injection molding melt 24, products with complex structures such as screw holes and ribs can also be produced to meet the subsequent assembly requirements of the product.

Example 1

First, use alkaline corrosion, anodic oxidation or mechanical sandblasting to form a nano-scale microporous structure on the forming surface of the metal substrate, with a pore size of 30 nanometers to 1 micron, and then put the treated metal substrate into the gold-plastic composite shell In the body forming mold; the temperature control main unit controls the electric heating element to heat the metal base material, making it heated to 85°C within 15s. At the same time, the temperature sensor obtains the surface temperature of the metal base material and feeds it back to the temperature control main unit to match the set temperature. When the actual temperature of the metal substrate does not reach the set value, the electric heating element continues to heat, and when the actual temperature of the metal substrate reaches the set value, the electric heating element stops heating; the injection molding melt is passed through the injection machine The pouring system set in the mold directly forms the plastic structural features on the surface of the metal substrate; the temperature of the injection melt is 230°C, the injection pressure is 110MPa, the pressure holding time is 5s after the injection is completed, and the cooling time is 20s to ensure the performance of the injection melt. Fully enter the microporous structure on the surface of the metal substrate; the temperature control main unit controls the cooling water channel to cool the metal substrate until it reaches the set temperature of 70°C; after the injection melt is cooled and solidified on the surface of the metal substrate, it Form a one-piece structure, combine firmly together, and take it out.

Example 2

First, use alkaline corrosion, anodic oxidation or mechanical sandblasting to form a nano-scale microporous structure on the forming surface of the metal substrate, with a pore size of 30 nanometers to 1 micron, and then put the treated metal substrate into the gold-plastic composite shell In the body forming mold; the temperature control main unit controls the electric heating element to heat the metal base material, making it heated to 115°C within 30s. At the same time, the temperature sensor obtains the surface temperature of the metal base material and feeds it back to the temperature control main unit to match the set temperature. When the actual temperature of the metal substrate does not reach the set value, the electric heating element continues to heat, and when the actual temperature of the metal substrate reaches the set value, the electric heating element stops heating; the injection molding melt is passed through the injection machine The pouring system set in the mold directly forms the plastic structural features on the surface of the metal substrate; the temperature of the injection melt is 270°C, the injection pressure is 110MPa, the pressure holding time is 10s after injection, and the cooling time is 30s to ensure the performance of the injection melt. Fully enter the microporous structure on the surface of the metal substrate; the temperature control main unit controls the cooling water channel to cool the metal substrate until it reaches the set temperature of 70°C; after the injection melt is cooled and solidified on the surface of the metal substrate, it Form a one-piece structure, combine firmly together, and take it out.

Example 3

First, use alkaline corrosion, anodic oxidation or mechanical sandblasting to form a nano-scale microporous structure on the forming surface of the metal substrate, with a pore size of 30 nanometers to 1 micron, and then put the treated metal substrate into the gold-plastic composite shell In the body forming mold; the temperature control main unit controls the electric heating element to heat the metal base material, making it heated to 100°C within 20s. At the same time, the temperature sensor obtains the surface temperature of the metal base material and feeds it back to the temperature control main unit to match the set temperature. When the actual temperature of the metal substrate does not reach the set value, the electric heating element continues to heat, and when the actual temperature of the metal substrate reaches the set value, the electric heating element stops heating; the injection molding melt is passed through the injection machine The pouring system set in the mold directly forms the plastic structural features on the surface of the metal substrate; the temperature of the injection melt is 250°C, the injection pressure is 100MPa, the holding time after injection is 7s, and the cooling time is 25s to ensure the performance of the injection melt. Fully enter the microporous structure on the surface of the metal substrate; the temperature control main unit controls the cooling water channel to cool the metal substrate until it reaches the set temperature of 70°C; after the injection melt is cooled and solidified on the surface of the metal substrate, it Form a one-piece structure, combine firmly together, and take it out.

Claims (6)

1. a kind of gold-modeling combined housing molding die, which is characterized in that including plastic injection plate (22), metal placement plate (21) And external control unit outside；Plastic injection plate (22) is placed in metal placement plate (21) side, the metal placement plate (21) with it is described External control unit outside connects；Plastic injection plate (22) is internally provided with injection canal, and plastic injection plate (22) bottom is logical with injection The concave surface that road communicates is as the space for accommodating injection molding melt (24)；Metal placement plate (21) upper surface is concave surface, is put on the concave surface It is equipped with metal base (23)；The metal placement plate (21) be internally provided with heating element (11), cooling-water duct (20) and Temperature sensor (13), cooling-water duct (20) are respectively equipped with cooling-water duct entrance (17) and cooling-water duct outlet (18)； The external control unit outside include water pump (2), electric T-shaped valve (3), two-way electronic valve (6), check valve (4), filter (1), Pressure regulation filter (5), relay (9) and temperature control master unit (7)；The water inlet end of water pump (2) passes through filter (1) and cooling pond (19) it connects, water pump (2) water outlet is connect by electric T-shaped valve (3) with cooling-water duct entrance (17)；Electric T-shaped valve (3) One outlet directly connect with cooling pond (19), it is empty with compression that one end of two-way electronic valve (6) passes through pressure regulation filter (5) Air source (16) connects, and two-way electronic valve (6) other end is connect with cooling-water duct entrance (17)；It is logical that cooling-water duct exports (18) Check valve (4) is crossed with cooling pond (19) to be connected；Heating element (11), temperature sensor (13), temperature indicator (14) are respectively It is connect with temperature control master unit (7), heating element (11) is connect by relay (9) with AC power (12), relay (9) and temperature It controls master unit (7) to connect, electric T-shaped valve (3) is connect with temperature control master unit (7)；

The axis of the heating element (11) is distributed in two planes and spatially vertical with the axis of cooling-water duct (20) Arrangement, distance of the heating element (11) apart from metal placement plate (21) surface is with cooling-water duct (20) apart from metal placement plate (21) distance on surface is unequal；

Wherein, the forming method of the gold-modeling combined housing molding die, follows the steps below：

Step 1：Metallic substrate surface processing；

First with the mode of alkali liquid corrosion or anodic oxidation or mechanical sandblasting micro-/ nano is formed on the forming surface of metal base Grade microcellular structure, then the metal base handled well is put into gold-modeling combined housing molding die by 30 nanometers to 1 micron of aperture In metal placement plate concave surface；

Step 2, the heating period；

Temperature control master unit controls heating element and heats metal base, it is made to be heated to 85 DEG C -115 DEG C in 15-30s, meanwhile, temperature Degree sensor obtains metallic substrate surface temperature and feeds back in temperature control master unit and is compared with the temperature value of setting, works as metal When the actual temperature of base material is not up to setting value, heating element continues to heat, when metal base actual temperature reaches setting value, Heating element stops heating；

Step 3, shaping stage；

Melt will be molded by injection canal in mold using injection molding machine, and it is special directly to form plastic construction in metallic substrate surface Sign；The temperature for being molded melt is 230-270 DEG C, injection pressure 80-110MPa, dwell time 5-10s after the completion of injection, cooling Time 20s-30s ensures that injection molding melt can be well into the microcellular structure of metallic substrate surface；

Step 4, cooling stage；

Temperature control master unit controls cooling-water duct cooling mold and metal base, until reaching the temperature of setting；

Step 5, product takes out；

Melt is molded after metallic substrate surface cooling and solidifying, forms integral structure with metal base, firm connection together, takes Go out to obtain the final product.

2. a kind of gold according to claim 1-modeling combined housing molding die, which is characterized in that the temperature control master unit (7) distributor (8) is provided on；Injection molding machine (15) is connect with temperature control master unit (7).

3. a kind of gold according to claim 1-modeling combined housing molding die, which is characterized in that the temperature sensor (13) a diameter of 2-4mm, temperature sensor (13) are in direct contact through metal placement plate (21) with metal base (23)；It is described A diameter of 8-10mm of cooling-water duct (20), a diameter of 6-10mm of heating element (11).

4. a kind of gold according to claim 1-modeling combined housing molding die, which is characterized in that the temperature control master unit (7) include monitoring setter (26) with PLC (25), signal output module (27), digital received module (28) respectively with PLC (25) Connection, A/D conversion modules (29) are connect with digital received module (28).

5. a kind of gold according to claim 1-modeling combined housing molding die, which is characterized in that the cooling-water duct (20) it is 15-20mm with heating element (11) spacing distance；The cooling-water duct (20) is apart from plastic injection plate (22) or gold Belong to placement plate (21) concave surface 10-12mm, surface of the heating element (11) apart from metal placement plate (21) concave surface is 2-6mm.

6. a kind of forming method of gold as described in claim 1-modeling combined housing molding die, which is characterized in that according to Lower step carries out：

Step 1：Metallic substrate surface processing；

First with the mode of alkali liquid corrosion or anodic oxidation or mechanical sandblasting micro-/ nano is formed on the forming surface of metal base Grade microcellular structure, then the metal base handled well is put into gold-modeling combined housing molding die by 30 nanometers to 1 micron of aperture In metal placement plate concave surface；

Step 2, the heating period；

Temperature control master unit controls heating element and heats metal base, it is made to be heated to 85 DEG C -115 DEG C in 15-30s, meanwhile, temperature Degree sensor obtains metallic substrate surface temperature and feeds back in temperature control master unit and is compared with the temperature value of setting, works as metal When the actual temperature of base material is not up to setting value, heating element continues to heat, when metal base actual temperature reaches setting value, Heating element stops heating；

Step 3, shaping stage；

Melt will be molded by injection canal in mold using injection molding machine, and it is special directly to form plastic construction in metallic substrate surface Sign；The temperature for being molded melt is 230-270 DEG C, injection pressure 80-110MPa, dwell time 5-10s after the completion of injection, cooling Time 20s-30s ensures that injection molding melt can be well into the microcellular structure of metallic substrate surface；

Step 4, cooling stage；

Temperature control master unit controls cooling-water duct cooling mold and metal base, until reaching the temperature of setting；

Step 5, product takes out；

Melt is molded after metallic substrate surface cooling and solidifying, forms integral structure with metal base, firm connection together, takes Go out to obtain the final product.