CN112123166A - Automobile bumper surface burr trimming and polishing device and trimming and polishing method - Google Patents

Abstract

The invention discloses an automobile bumper surface burr trimming and polishing device and trimming and polishing method, comprising a base, a positioning mechanism and a trimming and polishing mechanism. The base is provided with a rectangular adjustment through hole that penetrates the upper and lower side walls of the base, and the rectangular adjustment through hole is located directly in front of the backing plate. The positioning mechanism includes two telescopic rods, two downward pressing beams, two counterweight top rods and guide The two telescopic rods of the positioning mechanism slide through the rectangular adjustment through hole and are perpendicular to the top surface of the base. The trimming and polishing mechanism includes a drive motor, a universal transmission shaft, a rubber sleeve, a connecting head, a grinding head and a trimming head. . The invention facilitates the simultaneous operation of trimming and polishing the burrs on the outer wall of the automobile bumper quickly, and can clamp the automobile bumper during trimming and polishing, which is less prone to shaking and does not affect the rapid operation of trimming and polishing.

Description

A vehicle bumper surface burr trimming and polishing device and trimming and polishing method

technical field

The invention relates to the technical field of trimming and polishing the surface burr of an automobile bumper, in particular to a trimming and polishing device and a trimming and polishing method for the surface of the automobile bumper.

Background technique

With the development of the automobile industry and the large-scale application of engineering plastics in the automobile industry, the automobile bumper, as an important safety device, is also on the road of innovation. Harmony and unity with the shape of the car body, the pursuit of its own lightweight; the front and rear bumpers of the car are made of plastic, which are called plastic bumpers. After the plastic car bumper is injection-molded, there will be burrs on the surface. The finished product quality of the bumper requires trimming and polishing operations. At present, due to the irregular appearance structure of the bumper, it is inconvenient to fix the bumper during trimming and polishing operations, and it is easy to shake, trim and polish. The quality is difficult to guarantee, so here we design and produce a burr trimming and polishing device and trimming and polishing method on the surface of an automobile bumper, so as to solve the above problems.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a burr trimming and polishing device and trimming polishing method on the surface of an automobile bumper. During trimming and polishing operations, the bumper can be easily fixed, shaking is not easy to occur, the stability is good, and the trimming and polishing are greatly improved. Polished quality.

To achieve the above object, the present invention provides the following technical solutions:

An automobile bumper surface burr trimming and polishing device includes a base, a positioning mechanism and a trimming and polishing mechanism, the upper end of the base is inclined 30 degrees downward toward the front end, the rear side of the upper end of the base is vertically provided with a backing plate, and the base There are rectangular adjustment through holes penetrating the upper and lower side walls of the base, and the rectangular adjustment through holes are located directly in front of the backing plate. The positioning mechanism includes two telescopic rods, two downward pressing beams, two counterweight top rods and a guide The two telescopic rods of the positioning mechanism slide through the rectangular adjustment through hole and are perpendicular to the top surface of the base. The bottom end surfaces of the two telescopic rods are fixedly welded with trays, and the A first spring and a limit disk are slidably sleeved on the outer walls, and the limit disk is located above the first spring. The trimming and polishing mechanism includes a drive motor, a universal transmission shaft, a rubber sleeve, a connecting head, a grinding head and a trimming head. head.

In a further embodiment, four corners of the bottom end face of the base are vertically provided with support legs.

In a further embodiment, the two limiting disks are located below the base, and the diameter of each limiting disk is 1.5 times the width of the opening of the rectangular adjustment through hole.

In a further embodiment, two of the trays are radially provided with guide holes, the guide rods slide through the guide holes of the two trays respectively, and both ends of the guide rods are fixedly provided with a guide to prevent the guide rods from being detached from the guide. The limit block of the hole, the outer wall of the guide rod is slidably sleeved with a second spring located between the two trays.

In a further embodiment, the front side of the bottom end of each of the pressing beams is vertically welded to the top surface of each telescopic rod, and the bottom end face of each of the pressing beams is provided with a T on the side away from the telescopic rod. type chute, the included angle between each counterweight mandrel and each pressing beam is 45 degrees, and each counterweight mandrel slides through the T-shaped slider and the inner cavity of the T-shaped chute. catch.

In a further embodiment, the driving motor is fixedly arranged in the middle of the rear end surface of the backing plate, the driving motor passes through the backing plate through the rotation of the power shaft, and is connected with the universal transmission shaft, and the universal transmission shaft rotates inside It is embedded in the inner cavity of the rubber sleeve, and the connecting head is connected with the tip of the rubber sleeve. The radial side wall of the connecting head is provided with a gap that communicates with the inner cavity, and the grinding head and the trimming head are located in the gap of the connecting head. between the two axial ends of the cavity, and the radial side walls of the grinding head and the trimming head are flush with the opening of the notch, the universal drive shaft rotates and extends to the inner cavity of the connecting head, and is fixed with the grinding head and the trimming head For socket connection, the radial side wall of the trimming head is provided with a plurality of blades which are at an angle of 30 degrees to the radial tangent of the trimming head.

In a further embodiment, the outer wall of one end of the connecting head close to the rubber sleeve is radially provided with handles symmetrically distributed with the notches of the connecting head.

In a further embodiment, a hoisting mechanism is provided at the top middle position of the backing plate, and the hoisting mechanism includes an L-shaped hanging rod, and the L-shaped hanging rod is rotatably arranged at the middle position of the top surface of the backing board, and the A suspension column is vertically arranged below the front end of the top end of the L-shaped suspension rod, and a suspension ring is arranged on the bottom end surface of the suspension column, and the suspension ring is slidably sleeved with the rubber sleeve.

Preferably, the trimming and polishing method based on the above-mentioned automobile bumper surface burr trimming and polishing device includes the following steps:

A1. Place the car bumper to be trimmed and polished on the upper end face of the base that is inclined 30 degrees downward from the front end, and is located behind the two telescopic rods of the positioning mechanism, that is, lift the two telescopic rods up along the rectangular adjustment through holes respectively. rod, so that the two first springs are compressed between the limit plate and the tray, so that the gap between the bottom end face of the two depression beams and the upper end face of the base increases, and then the car bumper is placed on the two depression beams. The position below the beam, and the two counterweight ejector rods are used to slide forward through the T-shaped slider and the T-shaped chute cavity to clamp the car bumper on the two telescopic rods and the two counterweight ejector rods. Then release the two telescopic rods lifted upwards, and the two first springs are reset, so that the two pressing beams can be used to press the car bumper;

A2. At the same time, the second spring between the two trays pushes up the two trays to the side away from each other, that is, the two telescopic rods are pushed up to the side away from each other, so that it is convenient to support the two sides of the car bumper. The bent part of the end prevents the bumper from shaking left and right, so as to realize all-round positioning and clamping of the bumper;

A3. Then start the drive motor of the trimming and polishing mechanism, use the drive motor to drive the universal drive shaft to rotate freely in the inner cavity of the rubber sleeve, and drive the grinding head and the trimming head to rotate synchronously. The opening of the notch is flush, so the polishing and trimming operations of the car bumper can be synchronized with the rotating grinding head and trimming head through the hand-held handle, and the power transmission is not limited by the operation direction by using a universal drive shaft. , to meet the trimming and polishing operations on different parts of the car insurance cylinder.

Compared with the prior art, the beneficial effects of the present invention are:

1. The present invention facilitates the simultaneous operation of trimming and polishing the burr on the outer wall of the automobile bumper, and can clamp the automobile bumper during the trimming and polishing process, so that the phenomenon of shaking is not easy to occur, and the fast operation of trimming and polishing is not affected.

2. In the present invention, by setting the lifting ring for hoisting the rubber sleeve, the rubber sleeve and the internal universal drive shaft can be placed too long in the process of trimming and polishing, and the length of the inner universal drive shaft is too long, which affects the trimming and polishing operations. In addition, the L-shaped boom The rotation is set in the middle of the top surface of the backing plate, so the L-shaped hanger can be rotated freely according to the position of trimming and polishing to match the pulling direction of the rubber sleeve, which is convenient to use.

Description of drawings

Fig. 1 is the main structure schematic diagram of the present invention;

2 is a partial cross-sectional view of the positioning mechanism of the present invention;

FIG. 3 is an enlarged view of the structure at A in FIG. 1 of the present invention.

In the figure: 1. Base; 11. Supporting legs; 12. Backing plate; 13. Rectangular adjusting through hole; 2. Trimming and polishing mechanism; 21. Driving motor; 22. Rubber sleeve; 23. Handle; 24. Connector; 25 , universal drive shaft; 26, grinding head; 27, trimming head; 3, positioning mechanism; 31, telescopic rod; 32, pressing beam; 33, counterweight ejector rod; 34, tray; 35, guide rod; 36, 37, the second spring; 38, the limit block; 39, the T-shaped chute; 310, the T-shaped slider; 311, the limit plate; 312, the guide hole.

Detailed ways

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without one or more of these details. In other instances, some technical features known in the art have not been described in order to avoid obscuring the present invention.

Example 1

Referring to Figures 1-3, the present embodiment provides an automobile bumper surface burr trimming and polishing device and trimming and polishing method, including a base 1, a positioning mechanism 3 and a trimming and polishing mechanism 2, the upper end of the base 1 is inclined 30 degrees downward toward the front end , the rear side of the upper end face of the base 1 is vertically provided with a backing plate 12, the base 1 is provided with a rectangular adjustment through hole 13 that penetrates the upper and lower side walls of the base 1, and the rectangular adjustment through hole 13 is located directly in front of the backing plate 12. The positioning mechanism 3 includes There are two telescopic rods 31 , two pressing beams 32 , two counterweight top rods 33 and guide rods 35 . The planes are perpendicular to each other, the bottom surfaces of the two telescopic rods 31 are fixedly welded with a tray 34, and the outer walls of the two telescopic rods 31 are slidingly sleeved with a first spring 36 and a limit disk 311, and the limit disk 311 is located in the first spring. Above 36 , the trimming and polishing mechanism 2 includes a drive motor 21 , a universal transmission shaft 25 , a rubber sleeve 22 , a connecting head 24 , a grinding head 26 and a trimming head 27 .

The four corner positions of the bottom end surface of the base 1 are vertically provided with support legs 11 , and the entire base 1 is supported by the support legs 11 .

The two trays 34 are radially provided with guide holes 312 , and the guide rods 35 slide through the guide holes 312 of the two trays 34 respectively. The position block 38 is slidably sleeved on the outer wall of the guide rod 35 with a second spring 37 located between the two trays 34 .

The front side of the bottom end of each pressing beam 32 is vertically welded to the top surface of each telescopic rod 31 , and a T-shaped chute 39 is provided on the bottom end face of each pressing beam 32 away from the telescopic rod 31 . The angle between the counterweight top rod 33 and each pressing beam 32 is 45 degrees, and each counterweight top rod 33 is slidably engaged with the inner cavity of the T-shaped chute 39 through the T-shaped slider 310 .

The drive motor 21 is fixedly arranged in the middle of the rear end face of the backing plate 12 . The driving motor 21 rotates through the backing plate 12 through the power shaft, and is connected with the universal transmission shaft 25 . The universal transmission shaft 25 rotates and is embedded in the rubber sleeve 22 . The connecting head 24 is connected with the tip of the rubber sleeve 22, the radial side wall of the connecting head 24 is provided with a gap that communicates with the inner cavity, and the grinding head 26 and the trimming head 27 are located at the axial direction two sides of the cavity of the connecting head 24. between the ends, and the radial side walls of the grinding head 26 and the trimming head 27 are flush with the opening of the notch, the universal drive shaft 25 rotates and extends to the inner cavity of the connecting head 24 and is fixed with the grinding head 26 and the trimming head 27 For socket connection, the radial side wall of the trimming head 27 is provided with a plurality of blades which are at an angle of 30 degrees to the radial tangent of the trimming head 27 .

The outer wall of one end of the connector 24 close to the rubber sleeve 22 is radially provided with handles 23 symmetrically distributed with the notches of the connector 24 .

In this embodiment, the car bumper to be trimmed and polished is placed on the upper end surface of the base 1 which is inclined 30 degrees downward from the front end, and is located behind the two telescopic rods 31 of the positioning mechanism 3, that is, the adjustment channels are respectively adjusted along the rectangle. The hole 13 lifts the two telescopic rods 31 upward, so that the two first springs 36 are compressed between the limit plate 311 and the tray 34, so that the gap between the bottom end surfaces of the two pressing beams 32 and the upper end surface of the base 1 increases. Then place the car bumper under the two pressing beams 32, and use the two counterweight push rods 33 to slide forward along the inner cavity of the T-shaped slider 310 and the T-shaped chute 39 to realize the The automobile bumper is clamped between the two telescopic rods 31 and the two counterweight top rods 33 , and then the two telescopic rods 31 lifted upward are released, and the two first springs 36 are reset, so that the two lowering beams can be used. 32 Press the bumper of the car; at the same time, the second spring 37 between the two trays 34 pushes the two trays 34 to the side away from each other, that is, the two telescopic rods 31 are pushed up to the side away from each other , it is convenient to hold up the curved parts of the car bumper at both ends, prevent the car bumper from shaking left and right, so as to realize the omnidirectional positioning and clamping of the car bumper; then start the driving motor 21 of the trimming and polishing mechanism 2, and use the driving motor 21 to drive the universal transmission. The shaft 25 rotates freely in the inner cavity of the rubber sleeve 22, and drives the grinding head 26 and the trimming head 27 to rotate synchronously. The radial side walls of the grinding head 26 and the trimming head 27 here are flush with the opening of the notch, so the handle 23. Use the rotating grinding head 26 and the trimming head 27 to perform the synchronous operation of polishing and trimming the automobile bumper, and by adopting the universal drive shaft 25 for transmission, the power transmission is not restricted by the operation direction, and it satisfies the requirements for different parts of the automobile insurance cylinder. Trim and polish operations.

Embodiment 2

Please refer to Figure 1-3, further improvements have been made on the basis of Example 1:

The two limit disks 311 are both located below the base 1, and the diameter of each limit disk 311 is 1.5 times the opening width of the rectangular adjustment through hole 13, so that the limit disk 311 will not pass through the rectangular adjustment through hole. The inner cavity of the hole 13 does not affect the normal use of the first spring 36 .

A hoisting mechanism 4 is provided at the top middle position of the backing plate 12. The hoisting mechanism 4 includes an L-shaped hanging rod 41. The L-shaped hanging rod 41 is rotated and arranged at the middle position of the top surface of the backing plate 12, and the top front end of the L-shaped hanging rod 41 is below the front end. The hanging post 42 is vertically arranged, and the bottom end surface of the hanging post 42 is provided with a hanging ring 43. The hanging ring 43 is slidably connected with the rubber sleeve 22. By setting the hanging ring 43 for hoisting the rubber sleeve 22, the rubber sleeve can be placed in the process of trimming and polishing. 22 and the internal universal drive shaft 25 are too long and dragged around, affecting trimming and polishing operations. In addition, the L-shaped hanger rod 41 is rotatably arranged in the middle of the top surface of the backing plate 12, so the L-shaped hanger rod 41 can be adjusted according to the The trimmed and polished positions can be turned freely to match the direction in which the rubber sleeve 22 is pulled for ease of use.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, and substitutions can be made in these embodiments without departing from the principle and spirit of the invention and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (9)

1. The utility model provides a burnishing device is pruned to car bumper surface burr, includes base (1), positioning mechanism (3) and prunes polishing mechanism (2), its characterized in that: the upper end face of the base (1) is inclined by 30 degrees towards the lower part of the front end, the rear side of the upper end face of the base (1) is vertically provided with a backup plate (12), the base (1) is provided with a rectangular adjusting through hole (13) penetrating through the upper side wall and the lower side wall of the base (1), the rectangular adjusting through hole (13) is positioned right ahead of the backup plate (12), the positioning mechanism (3) comprises two telescopic rods (31), two pressing cross beams (32), two balance weight ejector rods (33) and a guide rod (35), the two telescopic rods (31) of the positioning mechanism (3) both penetrate through the rectangular adjusting through hole (13) in a sliding manner and are perpendicular to the top end face of the base (1), the bottom end faces of the two telescopic rods (31) are both fixedly welded with a tray (34), the outer walls of the two telescopic rods (31) are both sleeved with a first spring (36) and a limiting disc (311) in a sliding manner, and the limiting disc (311) is positioned above the, the trimming and polishing mechanism (2) comprises a driving motor (21), a universal transmission shaft (25), a rubber sleeve (22), a connecting head (24), a polishing head (26) and a trimming head (27).

2. The automobile bumper surface burr trimming and polishing device according to claim 1, characterized in that: four corner positions of the bottom end face of the base (1) are vertically provided with supporting legs (11).

3. The automobile bumper surface burr trimming and polishing device according to claim 1, characterized in that: two spacing dish (311) all are located the below position of base (1), and the diameter of every spacing dish (311) is 1.5 times of rectangle adjusting through-hole (13) opening width.

4. The automobile bumper surface burr trimming and polishing device according to claim 1, characterized in that: two guiding hole (312) have all radially been seted up in tray (34), guiding rod (35) slide respectively and run through guiding hole (312) of two trays (34), and the both ends of guiding rod (35) are all fixed and are equipped with stopper (38) that are used for preventing guiding rod (35) to break away from guiding hole (312), the outer wall of guiding rod (35) slides and has cup jointed second spring (37) that are located between two trays (34).

5. The automobile bumper surface burr trimming and polishing device according to claim 1, characterized in that: every the equal vertical welding of bottom surface front side of push down crossbeam (32) is at the top face of every telescopic link (31), every T type spout (39), every have been seted up to one side that telescopic link (31) were kept away from to the bottom face of push down crossbeam (32) counter weight ejector pin (33) and every push down contained angle between crossbeam (32) are 45 degrees, and every counter weight ejector pin (33) all through T type slider (310) and T type spout (39) inner chamber slip joint.

6. The automobile bumper surface burr trimming and polishing device according to claim 1, characterized in that: the driving motor (21) is fixedly arranged at the middle section of the rear end surface of the backup plate (12), the driving motor (21) penetrates through the backup plate (12) through the rotation of the power shaft, and is connected with a universal transmission shaft (25), the universal transmission shaft (25) is rotationally embedded in the inner cavity of the rubber sleeve (22), the connector (24) is connected with the tip end of the rubber sleeve (22), the radial side wall of the connector (24) is provided with a gap communicated with the inner cavity, the polishing head (26) and the trimming head (27) are positioned between the axial two ends of the notch inner cavity of the connecting head (24), and the radial side walls of the polishing head (26) and the trimming head (27) are flush with the opening of the gap, the universal transmission shaft (25) is rotatably extended to the inner cavity of the connector (24), and the cutting head is fixedly sleeved with the polishing head (26) and the trimming head (27), and a plurality of blades forming an angle of 30 degrees with the radial tangent line of the trimming head (27) are arranged on the radial side wall of the trimming head (27).

7. The automobile bumper surface burr trimming and polishing device according to claim 6, characterized in that: the outer wall of one end, close to the rubber sleeve (22), of the connector (24) is radially provided with a handle (23) which is symmetrically distributed with the notch of the connector (24).

8. The automobile bumper surface burr trimming and polishing device according to claim 1, characterized in that: the top middle section position of backup plate (12) is equipped with hoisting machine and constructs (4), hoisting machine constructs (4) including L type jib (41), L type jib (41) rotate the top end face middle section position that sets up at backup plate (12), the top front end below of L type jib (41) is equipped with davit (42) perpendicularly, and the bottom face of davit (42) is equipped with rings (43), rings (43) and rubber sleeve (22) slip cup joint.

9. A trimming and polishing method using the device for trimming and polishing surface burrs of an automobile bumper according to claim 1, comprising the steps of:

a1, placing the automobile bumper to be trimmed and polished on the upper end face inclined by 30 degrees below the front end of a base (1) and behind two telescopic rods (31) of a positioning mechanism (3), namely lifting the two telescopic rods (31) upwards along a rectangular adjusting through hole (13) respectively to enable two first springs (36) to be compressed between a limiting disc (311) and a tray (34) to enable the gap between the bottom end faces of two pressing cross beams (32) and the upper end face of the base (1) to be increased, then placing the automobile bumper under the two pressing cross beams (32), and utilizing two counterweight ejector rods (33) to slide forwards along the inner cavity passing through a T-shaped sliding block (310) and a T-shaped sliding groove (39) to clamp the automobile bumper between the two telescopic rods (31) and the two counterweight ejector rods (33), and then loosening the two upwards lifted telescopic rods (31), the two first springs (36) are reset, and the two pressing cross beams (32) can be used for pressing the automobile bumper;

a2, meanwhile, a second spring (37) between the two trays (34) jacks the two trays (34) to the side far away from each other, namely the two telescopic rods (31) jack the side far away from each other, so that the bent parts at the two ends of the automobile bumper are conveniently supported, the automobile bumper is prevented from shaking left and right, and the automobile bumper is clamped in an all-directional positioning manner;

a3, then starting a driving motor (21) of the trimming and polishing mechanism (2), driving a universal transmission shaft (25) to freely rotate in the inner cavity of a rubber sleeve (22) by using the driving motor (21), and driving a polishing head (26) and a trimming head (27) to synchronously rotate, wherein the radial side walls of the polishing head (26) and the trimming head (27) are flush with the opening of the gap, so that the automobile bumper can be polished and trimmed synchronously by using the rotating polishing head (26) and the trimming head (27) through a handheld handle (23), and the universal transmission shaft (25) is adopted for transmission, so that the power transmission is not limited by the operation direction, and the requirements of trimming and polishing different parts of the automobile bumper are met.

Images