CN109664483B

CN109664483B - Blow molding device with good sealing performance

Info

Publication number: CN109664483B
Application number: CN201910084206.XA
Authority: CN
Inventors: 杨业; 余坤; 陆光川
Original assignee: Individual
Current assignee: Suqian Komda Semiconductor Technology Co ltd
Priority date: 2019-01-29
Filing date: 2019-01-29
Publication date: 2021-06-11
Anticipated expiration: 2039-01-29
Also published as: CN109664483A

Abstract

The invention relates to a blow molding device with good sealing property, which comprises a base, a top plate, a controller, a blow molding mechanism, two molding mechanisms and two support plates, the forming mechanism comprises a mould, a pillar and a moving plate, two rollers are arranged on two sides of the moving plate, the upper part of the mould is provided with a notch, a clamping assembly is arranged in the notch, the forming mechanism comprises a sealing plate, a compressor, an air blowing pipe and four cylinders, the blow molding device with good sealing property utilizes the two molding mechanisms to place the parison, extrudes the parison through the clamping plate in the notch, the top of the parison is flared, so that a sealing plate of the forming mechanism can move downwards to seal the parison, and the position of the parison is fixed, so that the air blowing pipe can blow air in the sealed parison, and the parison is guaranteed to be smoothly blown and formed, thereby improving the practicability of the equipment.

Description

Blow molding device with good sealing performance

Technical Field

The invention relates to the field of plastic barrel production equipment, in particular to a blow molding device with good sealing performance.

Background

Blow molding, which is mainly referred to as hollow blow molding (also called blow molding), is a method of forming a hollow article from a hot-melt parison closed in a mold by means of gas pressure, and is a plastic molding method that is developed relatively rapidly. The blow molding mold has only female mold, and compared with injection molding, the mold has lower cost, high adaptability, high plasticity and capacity of forming complicated wavy curve or shape product.

When the existing blow molding device is used for manufacturing the plastic barrel, the blow pipe is mainly used for stretching into the parison for blowing, so that the parison is subjected to the blowing effect, the extrusion is carried out on the inside of a mold, then the plastic barrel can be manufactured through cooling and forming, in the production device, the size of the blow pipe is fixed and unchanged, when the blow pipe is too thin, the blow pipe is favorable for stretching into the parison, but the blow pipe easily causes air leakage when blowing, when the blow pipe is too thick, the blow pipe is difficult to stretch into the parison for blowing, and the plastic parison keeps a high-temperature softening state during blowing, therefore, the existing blow molding device is difficult to enable the blow pipe to stretch into the parison and seal the parison, the difficulty of blow molding production is caused, and the practicability of the existing blow molding production device for the plastic barrel is reduced.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: in order to overcome the defects of the prior art, the blow molding device with good sealing performance is provided.

The technical scheme adopted by the invention for solving the technical problems is as follows: a blow molding device with good sealing performance comprises a base, a top plate, a controller, a blow molding mechanism, two molding mechanisms and two support plates, wherein the two support plates are respectively fixed above two ends of the base;

the forming mechanism comprises a mold, a pillar and a moving plate, the mold is fixed above the moving plate through the pillar, two idler wheels are arranged on two sides of the moving plate, a notch is formed in the upper portion of the mold, the direction of the notch is the same as the direction of the mold, a clamping assembly is arranged in the notch, and the idler wheels are electrically connected with the PLC;

the forming mechanism comprises a sealing plate, a compressor, an air blowing pipe and four cylinders, wherein the four cylinders are respectively positioned above four corners of the sealing plate, a cylinder body of each cylinder is fixed below a top plate, the top end of an air rod of each cylinder is fixedly connected with the sealing plate, the compressor is fixed below the sealing plate, the top end of the air blowing pipe is communicated with the compressor, the bottom end of the air blowing pipe is arranged below the sealing plate, and the cylinders and the compressor are all electrically connected with a PLC.

Preferably, in order to extrude the inner wall of the parison on the blowing pipe, the clamping assembly comprises a first motor, a first connecting rod, a second connecting rod, a clamping plate and two limiting units, the first motor is fixed in the notch and electrically connected with the PLC, the first motor is in transmission connection with the first connecting rod, the first connecting rod is hinged with the clamping plate through the second connecting rod, the horizontal section of the clamping plate is in a circular arc shape, the circle center of the circular arc-shaped section of the clamping plate is located on one side, far away from the notch, of the clamping plate, and the two limiting units are respectively located on two sides of the first motor.

Preferably, in order to realize the stable movement of the clamping plate, the limiting unit comprises a limiting rod and a limiting ring, the limiting ring is fixed in the notch, the limiting rod is fixed on the clamping plate, and the limiting ring is sleeved on the limiting rod.

As preferred, for the convenience of supplementary parison of placing, forming mechanism still includes opening, limiting plate, second motor, bearing, lead screw and lifter plate, the opening sets up the bottom at the mould, the periphery and the open-ended inner wall sealing connection of limiting plate, the below at the mould and the top of movable plate are fixed respectively to second motor and bearing, the second motor is connected with the top transmission of lead screw, the bottom setting of lead screw is in the bearing, the lifter plate cover is established on the lead screw, lifter plate and limiting plate fixed connection, the lifter plate be equipped with the screw thread that matches with the lead screw with the junction of lead screw.

Preferably, in order to fix the position of the parison, the horizontal section of the limiting plate is in the shape of a circular arc, and the circle center of the circular arc-shaped section of the limiting plate is located on one side, far away from the inner wall of the mold, of the limiting plate.

Preferably, in order to realize the stable movement of the moving plate, a sliding rod is arranged above the base and fixed between the two support plates, and the moving plate is sleeved on the sliding rod.

The blow molding device with good sealing performance has the advantages that after the parison is placed by the two molding mechanisms, the parison is extruded by the clamping plate in the notch, so that the top of the parison is opened to be in a horn shape, the sealing plate of the molding mechanism can move downwards to seal the parison, the position of the parison is fixed, the blowing pipe can blow in the sealed parison, the parison is smoothly blown and molded, and the practicability of the device is improved.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view of a blow molding apparatus having a good sealing performance according to the present invention;

FIG. 2 is a schematic view of a clamp assembly of the blow molding apparatus of the present invention with good sealing properties;

FIG. 3 is a schematic view of a connection structure between a limiting plate and a mold of the blow molding device with good sealing performance;

in the figure: 1. the automatic air-blowing device comprises a base, 2 parts of a top plate, 3 parts of a controller, 4 parts of a support plate, 5 parts of a die, 6 parts of a support column, 7 parts of a moving plate, 8 parts of a roller, 9 parts of a sealing plate, 10 parts of a compressor, 11 parts of an air blowing pipe, 12 parts of an air cylinder, 13 parts of a first motor, 14 parts of a first connecting rod, 15 parts of a second connecting rod, 16 parts of a clamping plate, 17 parts of a limiting rod, 18 parts of a limiting ring, 19 parts of a limiting plate, 20 parts of a second motor, 21 parts of a bearing, 22 parts of a screw rod, 23 parts of a.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

As shown in fig. 1, a blow molding device with good sealing performance includes a base 1, a top plate 2, a controller 3, a blow molding mechanism, two molding mechanisms and two support plates 4, wherein the two support plates 4 are respectively fixed above two ends of the base 1, the top plate 2 is erected on the two support plates 4, the controller 3 is fixed below the top plate 2, a PLC is arranged in the controller 3, the blow molding mechanism is located below the top plate 2, and the molding mechanism is arranged above the base 1;

the forming mechanism comprises a mold 5, a pillar 6 and a moving plate 7, the mold 5 is fixed above the moving plate 7 through the pillar 6, two idler wheels 8 are arranged on two sides of the moving plate 7, a notch is arranged on the upper portion of the mold 5, the direction of the notch is the same as that of the mold 5, a clamping assembly is arranged in the notch, and the idler wheels 8 are electrically connected with the PLC;

the forming mechanism comprises a sealing plate 9, a compressor 10, an air blow pipe 11 and four air cylinders 12, wherein the four air cylinders 12 are respectively positioned above four corners of the sealing plate 9, the cylinder body of each air cylinder 12 is fixed below the top plate 2, the top end of an air rod of each air cylinder 12 is fixedly connected with the sealing plate 9, the compressor 10 is fixed below the sealing plate 9, the top end of the air blow pipe 11 is communicated with the compressor 10, the bottom end of the air blow pipe 11 is arranged below the sealing plate 9, and the air cylinders 12 and the compressor 10 are electrically connected with a PLC.

When the device utilizes the blow molding technology to produce the plastic barrel, an operator operates equipment through a controller 3 to operate, a roller 8 below a movable plate 7 moves on a base 1, the movable plate 7 is controlled to move, then a mold 5 is driven to move through a support 6, after the two molds 5 are moved to be close to each other, a plastic parison is placed between the two molds 5, the lower part of the plastic parison is positioned in a cavity formed by the two molds 5, the top of the parison is positioned above the molds 5, then the roller 8 rotates to drive the molds 5 to move to the lower part of an air blowing pipe 11, a PLC controls an air cylinder 12 to start, air pressure in the air cylinder 12 is increased, an air rod of the air cylinder 12 drives a sealing plate 9 to move downwards, the air blowing pipe 11 moves downwards, the caliber of the air blowing pipe 11 is smaller than that of the parison, the bottom end of the air blowing pipe 11 conveniently extends into the air blowing pipe 11, and a clamping component in a notch at the upper, extrude the parison of this department, make the top of parison outwards open for the loudspeaker form, PLC continues to increase the atmospheric pressure in the cylinder body of cylinder 12, thereby make the gas pole of cylinder 12 drive closing plate 9 and move down, extrude the open edge in parison top on mould 5, thereby realize the sealed to parison, the air that blows out when preventing to blow flows out from between the space of gas blow pipe 11 and parison, then PLC control compressor 10 starts, introduce outside air and compress, blow in sealed parison through gas blow pipe 11, make the parison receive the inflation extrusion of compressed air, be close to in mould 5, through cooling shaping back, the removal wheel rolls, make two moulds 5 part, take out fashioned product, cut the top of product and separate, can make the plastic drum.

As shown in fig. 2, the clamping assembly includes a first motor 13, a first connecting rod 14, a second connecting rod 15, a clamping plate 16 and two limiting units, the first motor 13 is fixed in the notch, the first motor 13 is electrically connected with the PLC, the first motor 13 is in transmission connection with the first connecting rod 14, the first connecting rod 14 is hinged to the clamping plate 16 through the second connecting rod 15, the horizontal cross section of the clamping plate 16 is circular arc-shaped, the center of circle of the circular arc-shaped cross section of the clamping plate 16 is located on one side of the clamping plate 16, which is far away from the notch, and the two limiting units are respectively located on two sides of the first motor 13.

When the parison needs to be clamped, the PLC controls the first motor 13 to be started to drive the first connecting rod 14 to rotate, the first connecting rod 14 acts on the clamping plate 16 through the second connecting rod 15, so that the clamping plate 16 moves in the direction away from the notch under the action of the two limiting units, the clamping plate 16 acts on the parison, the parison at the position is pushed to move towards the blowing pipe 11, the parison above the clamping plate 16 is outwards expanded to be horn-shaped, and the parison above the clamping plate 16 is fixed above the mold 5 after the sealing plate 9 moves downwards.

Preferably, in order to realize the stable movement of the clamping plate 16, the limiting unit comprises a limiting rod 17 and a limiting ring 18, the limiting ring 18 is fixed in the notch, the limiting rod 17 is fixed on the clamping plate 16, and the limiting ring 18 is sleeved on the limiting rod 17. When the clamping plate 16 moves, the limiting rod 17 is driven to move, and the limiting rod 17 penetrates through the limiting ring 18 fixed in the notch, so that the moving direction of the limiting rod 17 is fixed, and the moving direction of the clamping plate 16 is further fixed.

As shown in fig. 1, forming mechanism still includes opening, limiting plate 19, second motor 20, bearing 21, lead screw 22 and lifter plate 23, the opening sets up the bottom at mould 5, limiting plate 19's periphery and open-ended inner wall sealing connection, second motor 20 and bearing 21 are fixed respectively in the below of mould 5 and the top of movable plate 7, second motor 20 is connected with the top transmission of lead screw 22, the bottom of lead screw 22 sets up in bearing 21, lifter plate 23 cover is established on lead screw 22, lifter plate 23 and limiting plate 19 fixed connection, lifter plate 23 and the junction of lead screw 22 are equipped with the screw thread that matches with lead screw 22.

The side of the bottom of limiting plate 19 through mould 5 inside supports the parison, prevent that softened parison is out of shape, when gas blow pipe 11 blows to the parison, be located and be convenient for parison shaping in mould 5, PLC control second motor 20 starts, it is rotatory under bearing 21's supporting role to drive lead screw 22, lead screw 22 passes through the screw thread and acts on lifter plate 23, make lifter plate 23 along lead screw 22's axis downstream, and then drive limiting plate 19 and remove, make the plane at limiting plate 19's top and mould 5's bottom be in the coplanar, be convenient for the parison receive behind the inflation near on mould 5 inner wall, can the shaping through the cooling.

As shown in fig. 3, the horizontal cross section of the limiting plate 19 is circular arc, and the center of the circular arc cross section of the limiting plate 19 is located on one side of the limiting plate 19 away from the inner wall of the mold 5. The horizontal section of the limit plate 19 adopts a circular arc design, which is convenient for expanding the support surface of the limit plate 19 to the softened parison and preventing the parison from deforming between the two limit plates 19.

Preferably, in order to realize the stable movement of the moving plate 7, a sliding rod 24 is arranged above the base 1, the sliding rod 24 is fixed between the two support plates 4, and the moving plate 7 is sleeved on the sliding rod 24. The position of the slide bar 24 is fixed by the two support plates 4, the slide bar 24 passes through the moving plate 7, and the moving plate 7 moves smoothly along the axis of the slide bar 24 when the rollers 8 rotate.

This blow molding device is when producing the plastic drum, it is close to the removal parison to drive grip block 16 through the centre gripping subassembly, make the top of parison 5 top that is located of parison open in the position, be the loudspeaker shape, then closing plate 9 moves down, fix the top extrusion of parison in the top of mould 5, thereby not only fixed the position of parison, and seal the parison, be convenient for gas blow pipe 11 blows in the parison, make the parison expand tightly to lean on 5 inner walls of mould, cut through the top of cooling shaping and the product after the shaping, can make the plastic drum.

Compared with the prior art, this good blow molding device of leakproofness utilizes two forming mechanism to place the parison after, extrudees the parison through grip block 16 in the notch for the top of parison opens and is tubaeform, and the closing plate 9 of the forming mechanism of being convenient for moves down and seals the parison, and the position of fixed parison, makes gas blow pipe 11 can blow in sealed parison, guarantees that the parison receives the inflation shaping smoothly, thereby has improved the practicality of equipment.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The blow molding device with good sealing performance is characterized by comprising a base (1), a top plate (2), a controller (3), a blow molding mechanism, two molding mechanisms and two support plates (4), wherein the two support plates (4) are respectively fixed above two ends of the base (1), the top plate (2) is erected on the two support plates (4), the controller (3) is fixed below the top plate (2), a PLC is arranged in the controller (3), the blow molding mechanism is located below the top plate (2), and the molding mechanisms are arranged above the base (1);

the forming mechanism comprises a mold (5), a support column (6) and a movable plate (7), the mold (5) is fixed above the movable plate (7) through the support column (6), two idler wheels (8) are arranged on two sides of the movable plate (7), a notch is arranged on the upper portion of the mold (5), the direction of the notch is the same as that of the mold (5), a clamping assembly is arranged in the notch, and the idler wheels (8) are electrically connected with the PLC;

the forming mechanism comprises a sealing plate (9), a compressor (10), an air blowing pipe (11) and four air cylinders (12), wherein the four air cylinders (12) are respectively positioned above four corners of the sealing plate (9), a cylinder body of each air cylinder (12) is fixed below a top plate (2), the top end of an air rod of each air cylinder (12) is fixedly connected with the sealing plate (9), the compressor (10) is fixed below the sealing plate (9), the top end of the air blowing pipe (11) is communicated with the compressor (10), the bottom end of the air blowing pipe (11) is arranged below the sealing plate (9), and the air cylinders (12) and the compressor (10) are electrically connected with a PLC (programmable logic controller);

the parison is expanded into a horn shape in advance under the action of the clamping assembly, and the edge of the extruded parison is moved downwards to a mould (5) by virtue of a sealing plate (9), so that the parison is sealed; the clamping assembly comprises a first motor (13), a first connecting rod (14), a second connecting rod (15), a clamping plate (16) and two limiting units, the first motor (13) is fixed in the notch, the first motor (13) is electrically connected with the PLC, the first motor (13) is in transmission connection with the first connecting rod (14), the first connecting rod (14) is hinged to the clamping plate (16) through the second connecting rod (15), the horizontal section of the clamping plate (16) is arc-shaped, the circle center of the arc-shaped section of the clamping plate (16) is located on one side, away from the notch, of the clamping plate (16), and the two limiting units are located on two sides of the first motor (13) respectively.

2. The blow molding device with good sealing performance according to claim 1, wherein the limiting unit comprises a limiting rod (17) and a limiting ring (18), the limiting ring (18) is fixed in the notch, the limiting rod (17) is fixed on the clamping plate (16), and the limiting ring (18) is sleeved on the limiting rod (17).

3. A blow molding apparatus with good sealing performance according to claim 1, wherein the molding mechanism further comprises an opening, a stopper plate (19), a second motor (20), a bearing (21), a screw rod (22), and a lifting plate (23), the opening is arranged at the bottom of the die (5), the periphery of the limiting plate (19) is hermetically connected with the inner wall of the opening, the second motor (20) and the bearing (21) are respectively fixed below the mould (5) and above the moving plate (7), the second motor (20) is in transmission connection with the top end of the screw rod (22), the bottom end of the screw rod (22) is arranged in the bearing (21), the lifting plate (23) is sleeved on the screw rod (22), the lifting plate (23) is fixedly connected with the limiting plate (19), the connection part of the lifting plate (23) and the screw rod (22) is provided with a thread matched with the screw rod (22).

4. A blow molding device with good sealing performance according to claim 3, wherein the horizontal section of the limiting plate (19) is in the shape of a circular arc, and the center of the circular arc-shaped section of the limiting plate (19) is located on one side of the limiting plate (19) far away from the inner wall of the mold (5).

5. The blow molding device with good sealing performance as claimed in claim 1, wherein a sliding rod (24) is arranged above the base (1), the sliding rod (24) is fixed between the two support plates (4), and the moving plate (7) is sleeved on the sliding rod (24).