A device for polishing the surface of an injection molded part of an automobile

Abstract

The utility model discloses a kind of automobile injection molding piece surface polishing devices, including device seat, processing chamber and polishing head are installed in device seat top, and polishing platform is provided, adjusting assembly is installed in the cavity of device seat, including the pedestal of sliding installation in the cavity of device seat, the pinion and the gear are rotatably installed in the top of pedestal, the gear is fixedly butted with polishing platform through connecting shaft, the pinion has toothed plate, the toothed plate is elastically slidably connected in the inner wall of device seat.This device is cooperatively designed by gear transmission and locking mechanism, realizes workpiece rotation and polishing synchronization automation, can complete full circumference uniform polishing without manual intervention, significantly improves processing efficiency and accuracy;Combined with elastic toothed plate and clamping block locking structure, ensure workpiece position stability, and utilize closed polishing space to effectively isolate debris, reduce pollution risk, adapt to the efficient production of high-precision components such as automotive interior.

Description

Technical Field

[0001] This utility model relates to the field of grinding and processing technology, and in particular to a grinding device for the surface of automotive injection molded parts. Background Technology

[0002] Modern car steering wheels integrate multi-function buttons (such as volume control, cruise control settings, etc.). The base or housing of these buttons is often made of disc-shaped injection molded parts, which combine lightweight and high strength through precision molds.

[0003] However, after injection molding, disc-shaped injection molded parts will have burrs on the edges, which need to be polished. However, the existing polishing mechanisms have certain shortcomings. After polishing one area, a short cooling time is required. When processing disc-shaped workpieces, traditional automotive injection molding part polishing equipment relies on manual separation of the workpiece and adjustment of the angle, which leads to frequent interruptions in the processing flow and low efficiency. In addition, manual adjustment is prone to angle errors, resulting in uneven polishing or surface defects. At the same time, the open processing environment is prone to debris splashing into the equipment, increasing cleaning costs and failure risks, making it difficult to meet the needs of high-precision and mass production.

[0004] Therefore, the applicant proposes a surface grinding device for automotive injection molded parts to solve the problem. Utility Model Content

[0005] This invention provides a surface grinding device for automotive injection molded parts, which solves the problems mentioned in the background.

[0006] To solve the above-mentioned technical problems, this utility model provides a surface grinding device for automotive injection molded parts, including a device base, a processing chamber and a grinding head installed on the top of the device base, and a grinding table. An adjustment component is installed in the inner cavity of the device base, including a platform slidably installed in the inner cavity of the device base. A small gear and a large gear are rotatably installed on the top of the platform. The large gear is fixedly connected to the grinding table through a connecting shaft. The small gear meshes with a toothed plate. The toothed plate is elastically slidably connected to the inner wall of the device base. A stop block component is connected between the inner cavity of the device base and the toothed plate for performing translational operation on the toothed plate.

[0007] The device base is equipped with a drive assembly that moves the base.

[0008] Preferably, a row of spring telescopic rods is connected to the inner wall of the device base on one side of the toothed plate.

[0009] Preferably, the abutment assembly includes two electric push rods one fixed to the top support plate of the inner cavity of the device seat, the output end of the electric push rod one is equipped with a inclined block one, the inclined block one is located at both ends of the toothed plate, and the two ends of the toothed plate are equipped with inclined blocks two.

[0010] Preferably, one end of the inclined block is provided with an extension plate, and a locking block is installed on the extension plate, which can mesh with a pinion.

[0011] Preferably, the top of the toothed plate is connected to the bonding plate via a row of U-shaped plates, and the bonding plate can be bonded to the square sidewall of the top of the pinion.

[0012] Preferably, the drive assembly includes a motor mounted on one side of the device base, the motor being connected to a lead screw rotatably mounted inside the device base, the lead screw being threadedly connected to the platform, and the platform being slidably interlocked with two guide rods fixedly mounted inside the device base.

[0013] Preferably, the top of the device base is connected to the inner side of the processing chamber, and the lower baffle is in contact with the side wall of the grinding table and the bottom surface of the workpiece a during grinding. A rubber pad is connected to the top of the lower baffle. An electric push rod two is installed on the top of the processing chamber. An L-shaped plate is installed at the bottom of the electric push rod two. The bottom surface of the L-shaped plate can contact the lower baffle. The bottom of the L-shaped plate is provided with a notch that engages with the workpiece a.

[0014] Compared with related technologies, the surface grinding device for automotive injection molded parts provided by this utility model has the following beneficial effects:

[0015] This device achieves synchronized automation of workpiece rotation and grinding through a gear transmission and locking mechanism design. It can complete uniform grinding of the entire circumference without manual intervention, significantly improving processing efficiency and accuracy. Combined with the elastic toothed plate and locking block structure, it ensures the stability of workpiece position and effectively isolates debris by utilizing the enclosed grinding space, reducing the risk of contamination. It is suitable for the efficient production of high-precision parts such as automotive interiors. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall three-dimensional cross-sectional structure of the present invention. Figure 1 ;

[0018] Figure 3 This is a schematic diagram of the overall three-dimensional cross-sectional structure of the present invention. Figure 2 ;

[0019] Figure 4 This is a schematic diagram of the three-dimensional structure of the adjustment component of this utility model. Figure 1 ;

[0020] Figure 5 This is a schematic diagram of the three-dimensional structure of the adjustment component of this utility model. Figure 2 ;

[0021] Figure 6This is a partial three-dimensional structural diagram of the present invention.

[0022] The diagram is labeled as follows: 1. Device base; 11. Machining chamber; 12. Grinding table; 13. Grinding head; 14. Electric push rod II; 15. L-shaped plate; 16. Lower baffle; 2. Adjustment assembly; 21. Platform; 22. Large gear; 23. Small gear; 24. Gear plate; 25. Block; 26. Adhesive plate; 27. Spring telescopic rod; 3. Abutment assembly; 31. Electric push rod I; 32. Inclined block I; 33. Inclined block II; 34. Locking block; 4. Drive assembly; 41. Motor; 42. Lead screw; 43. Guide rod. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0024] Depend on Figure 1-6 As shown in the figure, this utility model provides a surface polishing device for automotive injection molded parts, including a device base 1. A processing chamber 11 and a polishing head 13 are installed on the top of the device base 1. The polishing head 13 is an electric polishing head 13, that is, the polishing head 13 is installed at the output end of the drive motor, which is a conventional design. A polishing table 12 is also provided. An adjustment component 2 is installed in the inner cavity of the device base 1, including a platform 21 that is slidably installed in the inner cavity of the device base 1. A small gear 23 and a large gear 22 are rotatably installed on the top of the platform 21. The large gear 22 is fixedly connected to the polishing table 12 through a connecting shaft. The connecting shaft moves in the opening of the device base 1 but does not contact it. The small gear 23 meshes with a toothed plate 24. The toothed plate 24 is elastically slidably connected to the inner wall of the device base 1. A stop component 3 is connected between the inner cavity of the device base 1 and the toothed plate 24 for translating the toothed plate 24. A drive component 4 for driving the platform 21 to move is installed inside the device base 1.

[0025] The abutment assembly 3 includes two electric push rods 31 fixed to the top support plate of the inner cavity of the device base 1. The output end of the electric push rod 31 is equipped with a ramp block 32. The ramp block 32 is located at both ends of the toothed plate 24, and ramp blocks 33 are installed at both ends of the toothed plate 24. An extension plate is provided on one side of the ramp block 32, and a locking block 34 is installed on the extension plate. The locking block 34 can mesh with the pinion 23. A row of spring telescopic rods 27 is connected to the inner wall of the device base 1 on one side of the toothed plate 24.

[0026] With the above structural design, when this device is in operation, after the disc workpiece a is placed on the grinding table 12, it is fixed by the locking structure in the prior art. Then, the drive assembly 4 drives the table base 21 to move until the grinding head 13 on the top of the grinding table 12 contacts it. Note that the diameter of the disc workpiece a is larger than the diameter of the grinding table 12. During the displacement, the small gear 23 meshes with the toothed plate 24 and rotates, which in turn drives the large gear 22 to rotate. Note that during this process, the small gear 23 rotates one revolution, which drives the large gear 22 to rotate a certain angle, so that the workpiece contacts the grinding head 13 during slow rotation. Before grinding, the two electric push rods 31 are activated, causing the inclined block 32 to move and press the inclined block 33, so that the toothed plate 24 moves through a row of spring telescopic rods 27 and disengages from the small gear 23. At the same time, one inclined block 31... The locking block 34 on 32 engages with the pinion 23 through displacement, locking the pinion 23 and the large gear 22 for greater stability during grinding. At this point, the grinding head 13 can be started for grinding. After grinding, the platform 21 is moved back. At this point, the gear plate 24 and the pinion 23 lose engagement, causing them to stop rotating. After the grinding head 13 cools down, the inclined block 32 is reset. The gear plate 24 is reset and re-engaged with the pinion 23 by the spring telescopic rod 27. At this point, cooling is complete. Then, the initial operation is repeated. This allows for automated adjustment of the workstation. During rotation, the disc workpiece a can be rotated by a small angle (e.g., 5° or 10°, depending on the gear size, to accommodate the distance of loading and unloading) in a single rotation. Combined with the constant pressure of the grinding head 13, this ensures that the entire circumferential surface is covered without any omissions, resulting in excellent continuity.

[0027] The top of the toothed plate 24 is connected to the bonding plate 26 via a row of U-shaped plates, and the bonding plate 26 can be bonded to the side wall of the block 25 on the top of the pinion 23.

[0028] Furthermore, in the design, each time grinding is performed, one side of the block 25 will rotate to align with the bonding plate 26. When the first inclined block 32 moves and presses against the second inclined block 33, the toothed plate 24 moves via a row of spring-loaded telescopic rods 27 and disengages from the pinion 23. Simultaneously, the bonding plate 26 adheres to the side wall of the block 25. Therefore, during resetting, one side of the block 25 slides against the bonding plate 26. The advantage of this design is that it ensures the pinion 23 does not rotate during resetting, guaranteeing that when the first inclined block 32 resets, the pinion 23 can stably re-engage with the toothed plate 24, resulting in excellent stability.

[0029] The drive assembly 4 includes a motor 41 mounted on one side of the device base 1. The motor 41 is connected to a lead screw 42 rotatably mounted inside the device base 1. The lead screw 42 is threadedly connected to the platform 21. The platform 21 is slidably inserted into two guide rods 43 fixedly mounted inside the device base 1.

[0030] With the design of the drive component 4, when the displacement of the platform 21 is driven, the motor 41 drives the lead screw 42 to rotate, and then the platform 21 can be driven to slide by the limit of the guide rod 43, which is very convenient.

[0031] The top of the device base 1 is connected to the inner side of the processing chamber 11 by a lower baffle 16. During grinding, the lower baffle 16 is in contact with the side wall of the grinding table 12 and the bottom surface of the workpiece a. The top of the lower baffle 16 is connected to a rubber pad (that is, the rubber pad is used to achieve approximate contact with the bottom surface of the workpiece a). The top of the processing chamber 11 is equipped with an electric push rod 2 14. The bottom of the electric push rod 2 14 is equipped with an L-shaped plate 15. The bottom surface of the L-shaped plate 15 can contact the lower baffle 16. The bottom of the L-shaped plate 15 is provided with a notch that engages with the workpiece a. The two sides of the L-shaped plate 15 are also in contact with the inner wall of the processing chamber 11 and slide.

[0032] Furthermore, through the above structural design, it is necessary to prevent debris from splashing into the opening where the connecting shaft moves in the device seat 1 during grinding. Therefore, before grinding, the electric push rod 14 is activated to drive the L-shaped plate 15 to descend and contact the lower baffle 16. The top and side of the workpiece a are engaged with the bottom recess of the L-shaped plate 15, thus isolating the grinding surface (the design of the L-shaped plate 15 can meet the requirement of blocking debris splashing at the maximum height). The grinding debris can be absorbed by the absorption mechanism in the existing technology.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] 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, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A surface polishing device for automotive injection molded parts, comprising a device base (1), a processing chamber (11) and a polishing head (13) mounted on the top of the device base (1), and a polishing table (12) provided thereon, characterized in that: An adjustment assembly (2) is installed in the inner cavity of the device base (1), including a platform (21) slidably installed in the inner cavity of the device base (1). A small gear (23) and a large gear (22) are rotatably installed on the top of the platform (21). The large gear (22) is fixedly connected to the grinding table (12) through a connecting shaft. The small gear (23) meshes with a toothed plate (24). The toothed plate (24) is elastically slidably connected to the inner wall of the device base (1). A stop assembly (3) is connected between the inner cavity of the device base (1) and the toothed plate (24) for performing translational operation on the toothed plate (24). The device base (1) is equipped with a drive assembly (4) for moving the drive platform (21).

2. The surface grinding device for automotive injection molded parts according to claim 1, characterized in that, A row of spring telescopic rods (27) is connected to the inner wall of the device base (1) on one side of the toothed plate (24).

3. The surface grinding device for automotive injection molded parts according to claim 1, characterized in that, The abutment assembly (3) includes two electric push rods (31) fixed on the top support plate of the inner cavity of the device base (1). The output end of the electric push rod (31) is equipped with a ramp block (32). The ramp block (32) is located at both ends of the toothed plate (24), and ramp blocks (33) are installed at both ends of the toothed plate (24).

4. The surface grinding device for automotive injection molded parts according to claim 3, characterized in that, An extension plate is provided on one side end of the inclined block (32), and a locking block (34) is installed on the extension plate, which can mesh with the pinion (23).

5. The surface grinding device for automotive injection molded parts according to claim 4, characterized in that, The top of the toothed plate (24) is connected to the bonding plate (26) by a row of U-shaped plates, and the bonding plate (26) can be bonded to the side wall of the block (25) on the top of the pinion (23).

6. The surface grinding device for automotive injection molded parts according to claim 1, characterized in that, The drive assembly (4) includes a motor (41) installed on one side of the device base (1), the motor (41) is connected to a lead screw (42) rotatably installed inside the device base (1), the lead screw (42) is threadedly connected to the platform (21), and the platform (21) is slidably inserted into two guide rods (43) fixedly installed inside the device base (1).

7. The surface grinding device for automotive injection molded parts according to claim 1, characterized in that, The top of the device base (1) is connected to the inner side of the processing chamber (11) by a lower baffle (16). The lower baffle (16) is in contact with the side wall of the grinding table (12) and the bottom surface of the workpiece a during grinding. A rubber pad is connected to the top of the lower baffle (16). An electric push rod (14) is installed on the top of the processing chamber (11). An L-shaped plate (15) is installed at the bottom of the electric push rod (14). The bottom surface of the L-shaped plate (15) can contact the lower baffle (16). The bottom of the L-shaped plate (15) is provided with a notch that engages with the workpiece a.

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