Corner grinding device for plastic product injection molding

Abstract

The utility model relates to the field of grinding of injection products, and discloses a corner grinding device for injection molding of plastic products, which comprises a grinding component, a transmission component arranged at the top of the grinding component, and a clamping component arranged at the top of the grinding component and connected with the transmission component in a matched manner; the clamping part comprises a second connecting plate, a sleeving hole is formed in the center of the top of the second connecting plate, pulling ropes are symmetrically and fixedly connected to the outer surfaces of the two ends of the second connecting plate, and one end of each pulling rope is fixedly connected with a first connecting plate; through cooperative operation of the clamping component, the transmission component and the polishing component, the clamping block can be driven to clamp a plastic product while the polishing disc descends, the corner polishing efficiency of the plastic product is improved, and when the polishing disc rotates, the plastic product can be clamped through the clamping block, so that the polishing efficiency of the plastic product is improved. And the plastic product is driven to rotate synchronously, so that the circumference of the plastic product is polished.

Description

Technical Field

[0001] This utility model relates to the field of grinding injection molded products, specifically to a grinding device for the edges and corners of plastic products during injection molding. Background Technology

[0002] During the injection molding process, defects such as burrs and imperfections may occur on the surface of injection-molded products due to factors such as molds, materials, or processes. These defects affect the product's appearance and quality. Polishing can remove these defects, making the product surface smoother and flatter, thereby improving the overall quality of the product.

[0003] Existing polishing devices have a relatively fragmented structure and require separate system control and operation, resulting in relatively independent clamping and polishing steps. For example, the clamping components must first be controlled to clamp the plastic product before the polishing disc can be controlled to approach and polish the edge of the plastic product. At the same time, the rotation of the plastic product must also be controlled. This process cannot reduce the number of polishing steps for the plastic product, thus failing to further improve the efficiency of polishing the plastic product. Utility Model Content

[0004] The purpose of this utility model is to provide a grinding device for the edges and corners of plastic products during injection molding, and to solve the following technical problem: how to make the grinding device have both clamping and rotating functions, thereby improving the efficiency of grinding the edges and corners of plastic products.

[0005] The purpose of this utility model can be achieved through the following technical solution: a grinding device for the edge and corner of plastic product injection molding, comprising: a grinding component, a transmission component provided on the top of the grinding component, and a clamping component connected to the transmission component on the top of the grinding component.

[0006] The clamping component includes a second connecting plate, with a socket hole at the top center of the second connecting plate. Traction ropes are symmetrically fixedly connected to the outer surfaces of both ends of the second connecting plate. One end of the traction rope is fixedly connected to a first connecting plate. A clamping push rod is slidably inserted into the center of the side of the first connecting plate. A clamping block is fixedly connected to one end of the clamping push rod. A first limiting slide is evenly provided on the outer surface of the clamping push rod. A first helical gear ring that is adapted to and engages with the first limiting slide is sleeved on the outer surface of the clamping push rod. A return spring is fixedly connected to the outer periphery of the side of the first connecting plate.

[0007] The transmission component includes a transmission chain, with a first sprocket drive shaft and a second sprocket drive shaft respectively meshing at both ends of the transmission chain. Helical gears are fixedly connected to the bottom ends of the first sprocket drive shaft and the second sprocket drive shaft.

[0008] As a preferred embodiment of this utility model: the grinding component includes a support frame, an electrical control box is installed inside the bottom end of the support frame, both ends of the upper surface of the middle part of the support frame are limited sleeves, the upper outer surface of the support frame is symmetrically provided with second limited slide rails, a connecting shaft is slidably inserted into the top center of the support frame, a cylinder is fixedly installed on the top of the support frame and rotatedly engaged with the connecting shaft, a drive motor is fixedly installed on the top center edge of the support frame, a second helical gear ring is slidably sleeved on the outer surface of the connecting shaft, a grinding disc is fixedly connected to the bottom end of the connecting shaft, one end of the helical gear is provided with a helical gear meshing with the second helical gear ring, limited shaft holes are opened at both ends of the upper part of the support frame, limited guide wheels are evenly arranged on the upper outer surface of the support frame and at the edge of the second limited slide rail, a drive sprocket is rotatably engaged inside the top center of the support frame, and the drive sprocket is slidably sleeved on the outer surface of the connecting shaft.

[0009] As a preferred embodiment of this utility model: the clamping push rod is slidably inserted into the upper middle surface of the support frame through a limiting sleeve, and a snap-fit ​​groove is provided on the outer surface of the limiting sleeve. The first connecting plate is slidably snapped into the snap-fit ​​groove on the outer surface of one end of the clamping push rod.

[0010] As a preferred embodiment of this utility model: the first sprocket drive shaft and the second sprocket drive shaft are rotatably engaged with the upper outer surface of the support frame through the limiting shaft hole, and the second connecting plate is rotatably engaged with the bottom outer surface of the connecting shaft through the sleeve hole.

[0011] As a preferred embodiment of this utility model: the two ends of the second connecting plate are slidably engaged with the upper two ends of the support frame through the second limiting slide, the traction rope is slidably overlapped on the outer surface of the limiting guide wheel, the outer surface of the connecting shaft is provided with a sliding groove, and the first helical gear ring, the second helical gear ring, the drive sprocket and the inner surface are all provided with locking teeth.

[0012] As a preferred embodiment of this utility model: the second helical gear ring and the drive sprocket are slidably engaged with the groove on the outer surface of the connecting shaft through the snap teeth on the inner surface; the transmission chain is meshed with the drive sprocket; and the first sprocket drive shaft and the second sprocket drive shaft are meshed with the first helical gear ring through the helical gear at the bottom.

[0013] As a preferred embodiment of this utility model: the first helical gear rings on the outer surfaces of the two sets of clamping push rods are arranged in the same direction, and the two sets of first helical gear rings are respectively rotatably engaged with the middle outer surface of the support frame and one end face of the limiting sleeve.

[0014] The beneficial effects of this utility model are:

[0015] (1) By cooperating with the clamping component, the transmission component and the grinding component, this utility model can drive the clamping block to clamp the plastic product while the grinding disc descends, so that the clamping and grinding steps are carried out in a continuous manner, thereby shortening the processing time between steps and improving the efficiency of grinding the edges and corners of the plastic product. Moreover, when the grinding disc rotates, the clamping block can clamp the plastic product and drive the plastic product to rotate synchronously, thereby realizing the circumferential grinding of the plastic product. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 A schematic diagram of an edge grinding device for injection molding of plastic products;

[0018] Figure 2 This is a schematic diagram of the clamping component structure;

[0019] Figure 3 This is a schematic diagram of the transmission component structure;

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the polished component.

[0021] Figure Descriptions: 1. Clamping component; 2. Transmission component; 3. Grinding component; 11. Clamping push rod; 12. First helical gear ring; 13. Clamping block; 14. First limiting slide; 15. First connecting plate; 16. Traction rope; 17. Sleeve hole; 18. Second connecting plate; 19. Return spring; 21. First sprocket drive shaft; 22. Drive chain; 23. Second sprocket drive shaft; 24. Helical gear; 31. Electrical control box; 32. Limiting guide wheel; 33. Second limiting slide; 34. Drive motor; 35. Connecting shaft; 36. Second helical gear ring; 37. Cylinder; 38. Grinding disc; 39. Limiting sleeve; 310. Support frame; 311. Limiting shaft hole; 312. Drive sprocket. Detailed Implementation

[0022] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Please see Figures 1-4 As shown, this utility model is a grinding device for the edges and corners of plastic products during injection molding, including: a grinding component 3, a transmission component 2 provided on the top of the grinding component 3, and a clamping component 1 that is connected to the transmission component 2 on the top of the grinding component 3.

[0024] The clamping component 1 includes a second connecting plate 18. A sleeve hole 17 is provided at the top center of the second connecting plate 18. Traction ropes 16 are symmetrically fixedly connected to the outer surfaces of both ends of the second connecting plate 18. A first connecting plate 15 is fixedly connected to one end of the traction rope 16. A clamping push rod 11 is slidably inserted into the center of the side of the first connecting plate 15. A clamping block 13 is fixedly connected to one end of the clamping push rod 11. A first limiting slide 14 is evenly provided on the outer surface of the clamping push rod 11. A first helical gear ring 12 that is adapted to and engages with the first limiting slide 14 is sleeved on the outer surface of the clamping push rod 11. A return spring 19 is fixedly connected to the outer periphery of the side of the first connecting plate 15.

[0025] The transmission component 2 includes a transmission chain 22, with a first sprocket drive shaft 21 and a second sprocket drive shaft 23 respectively meshing between the two ends of the transmission chain 22. Helical gears 24 are fixedly connected to the bottom ends of the first sprocket drive shaft 21 and the second sprocket drive shaft 23.

[0026] The grinding component 3 includes a support frame 310. An electrical control box 31 is installed inside the bottom end of the support frame 310. Both ends of the upper surface of the middle section of the support frame 310 are limited sleeves 39. A second limited slide rail 33 is symmetrically opened on the upper outer surface of the support frame 310. A connecting shaft 35 is slidably inserted into the top center of the support frame 310. A cylinder 37 is fixedly installed on the top of the support frame 310 and rotatably engages with the connecting shaft 35. A drive motor 34 is fixedly installed on the top center edge of the support frame 310. The outer surface of the connecting shaft 35... A second helical gear ring 36 is slidably sleeved, and a grinding disc 38 is fixedly connected to the bottom end of the connecting shaft 35. One end of the helical gear 24 is provided with a helical gear 24 that meshes with the second helical gear ring 36. Limiting shaft holes 311 are opened at both ends of the upper part of the support frame 310. Limiting guide wheels 32 are evenly arranged on the upper outer surface of the support frame 310 and at the edge of the second limiting slide 33. A drive sprocket 312 is rotatably engaged inside the top center of the support frame 310. The drive sprocket 312 is slidably sleeved on the outer surface of the connecting shaft 35.

[0027] The present invention clamping push rod 11 is slidably inserted into the middle upper surface of the support frame 310 through the limiting sleeve 39, which can limit the sliding of the clamping push rod 11. The outer surface of the limiting sleeve 39 is provided with a snap-fit ​​groove, and the first connecting plate 15 is slidably snapped into the snap-fit ​​groove on the outer surface of one end of the clamping push rod 11, which can limit the sliding of the first connecting plate 15.

[0028] The first sprocket drive shaft 21 and the second sprocket drive shaft 23 of this utility model are rotatably engaged with the upper outer surface of the support frame 310 through the limiting shaft hole 311, which can limit the rotation of the first sprocket drive shaft 21 and the second sprocket drive shaft 23. The second connecting plate 18 is rotatably engaged with the bottom outer surface of the connecting shaft 35 through the sleeve hole 17, which can make the second connecting plate 18 rise and fall with the bottom end of the connecting shaft 35.

[0029] The two ends of the second connecting plate 18 of this utility model are slidably engaged with the upper two ends of the support frame 310 through the second limiting slide 33, which can limit the sliding of the two ends of the second connecting plate 18. The traction rope 16 is slidably attached to the outer surface of the limiting guide wheel 32, which can drive the clamping push rod 11 to slide laterally when the connecting shaft 35 is raised and lowered. The outer surface of the connecting shaft 35 is provided with a sliding groove, which can facilitate the second helical gear ring 36 to slide and engage with the outer surface of the connecting shaft 35. The first helical gear ring 12, the second helical gear ring 36, the drive sprocket 312, and the inner surface are all provided with locking teeth.

[0030] The second helical gear ring 36 and the drive sprocket 312 of this utility model are slidably engaged with the groove on the outer surface of the connecting shaft 35 through the snap teeth on the inner surface. Therefore, when the second helical gear ring 36 and the drive sprocket 312 drive the connecting shaft 35 to rotate, it does not affect the lifting and lowering of the connecting shaft 35. The transmission chain 22 is meshed with the drive sprocket 312. Moreover, the first sprocket drive shaft 21 and the second sprocket drive shaft 23 are meshed with the first helical gear ring 12 through the helical gear 24 at the bottom, which can transmit the power of the connecting shaft 35 rotation to the clamping push rod 11 through the transmission component 2.

[0031] In this invention, the first helical gear rings 12 on the outer surfaces of the two sets of clamping push rods 11 are arranged in the same direction, and the two sets of first helical gear rings 12 are respectively rotatably engaged with the middle outer surface of the support frame 310 and one end face of the limiting sleeve 39, thereby ensuring the stability of the rotation of the first helical gear rings 12 and avoiding affecting the reciprocating sliding of the clamping push rods 11.

[0032] The working principle of this utility model is as follows: When grinding the edges of a molded plastic product, the plastic product is first placed between clamping blocks 13, with the center of the plastic product aligned with the side center of the clamping block 13. Then, the cylinder 37 is controlled to drive the connecting shaft 35 to descend. Simultaneously, the connecting shaft 35 drives the second connecting plate 18 and the grinding disc 38 at the bottom to descend synchronously. When the second connecting plate 18 descends, it pulls the traction ropes 16 connected at both ends to descend. The traction ropes 16 slide on the outer surface of the limiting guide wheel 32, causing one end of the traction rope 16 to drive the first connecting plate 15 to slide inside the limiting sleeve 39. At the same time, the first connecting plate 15 drives the clamping blocks 13 to descend. The push rods 11 slide synchronously inside the limiting sleeve 39, causing the clamping blocks 13 at one end of the two sets of clamping push rods 11 to move closer to each other until the two sets of clamping blocks 13 clamp the plastic product. Then, the connecting shaft 35 continues to descend, causing the grinding disc 38 to contact the edge of the plastic product. At the same time, the traction rope 16 pulls the first connecting plate 15 to slide on the outer surface of the clamping push rods 11, compressing the return spring 19 to contract. Then, the drive motor 34 controls the second helical gear ring 36 to rotate through the helical gear 24. Therefore, the rotation of the second helical gear ring 36 will drive the grinding disc 38 to rotate synchronously through the connecting shaft 35. The rotation of the grinding disc 38 will grind the edge of the plastic product that is in contact with the bottom. Furthermore, when the connecting shaft 35 rotates, it drives the first sprocket drive shaft 21 and the second sprocket drive shaft 23 to rotate synchronously via the drive sprocket 312 and the transmission chain 22. The first sprocket drive shaft 21 and the second sprocket drive shaft 23 drive the meshing first helical gear ring 12 to rotate via the helical gear 24 at the bottom. At the same time, the first helical gear ring 12 drives the clamping push rod 11 to rotate. Therefore, the two sets of clamping push rods 11 drive the clamped plastic product to rotate synchronously via the clamping block 13 at one end. The rotating grinding disc 38 can then perform circumferential grinding on the edge of the plastic product. After grinding is completed, the control cylinder 37 drives the connecting shaft 35 and the grinding disc 38 to rise and return to their original positions. Simultaneously, the second connecting plate 18 rises to relax the traction rope 16, allowing the return spring 19 to push the first connecting plate 15 to drive the clamping push rod 11 to return to its original position and slide. The plastic product will automatically fall, and then a new plastic product can be installed to continue grinding. Therefore, through the coordinated operation of the clamping component 1, the transmission component 2, and the grinding component 3, the clamping block 13 can be driven to clamp the plastic product while the grinding disc 38 descends, improving the efficiency of grinding the edges and corners of the plastic product. Moreover, when the grinding disc 38 rotates, the clamping block 13 can clamp the plastic product, causing the plastic product to rotate synchronously, thereby achieving circumferential grinding of the plastic product.

[0033] The above description details one embodiment of the present utility model, but it is merely a preferred embodiment and should not be construed as limiting the scope of the present utility model. All equivalent variations and improvements made within the scope of the present utility model application should still fall within the patent coverage of the present utility model.

Claims

1. A device for edge grinding in injection molding of plastic products, comprising: A grinding component (3) is provided with a transmission component (2) on its top, characterized in that a clamping component (1) is provided on the top of the grinding component (3) and is connected to the transmission component (2); The clamping component (1) includes a second connecting plate (18), a sleeve hole (17) is provided at the top center of the second connecting plate (18), traction ropes (16) are symmetrically fixedly connected to both outer surfaces of the second connecting plate (18), a first connecting plate (15) is fixedly connected to one end of the traction rope (16), a clamping push rod (11) is slidably inserted into the center of the side of the first connecting plate (15), a clamping block (13) is fixedly connected to one end of the clamping push rod (11), a first limiting slide (14) is evenly provided on the outer surface of the clamping push rod (11), a first helical gear ring (12) that is adapted to and engages with the first limiting slide (14) is sleeved on the outer surface of the clamping push rod (11), and a return spring (19) is fixedly connected to the outer periphery of the side of the first connecting plate (15). The transmission component (2) includes a transmission chain (22), with a first sprocket drive shaft (21) and a second sprocket drive shaft (23) respectively meshing at both ends of the transmission chain (22). The bottom ends of the first sprocket drive shaft (21) and the second sprocket drive shaft (23) are fixedly connected with helical gears (24).

2. The edge grinding device for injection molding of plastic products according to claim 1, characterized in that, The grinding component (3) includes a support frame (310), an electrical control box (31) is provided inside the bottom end of the support frame (310), both ends of the upper surface of the middle part of the support frame (310) are limited sleeves (39), the upper outer surface of the support frame (310) is symmetrically provided with a second limited slide rail (33), a connecting shaft (35) is slidably inserted into the top center of the support frame (310), and a cylinder (37) is fixedly installed on the top of the support frame (310) and rotatedly engaged with the connecting shaft (35); A drive motor (34) is fixedly installed on the top center edge of the support frame (310). A second helical gear ring (36) is slidably sleeved on the outer surface of the connecting shaft (35). A grinding disc (38) is fixedly connected to the bottom end of the connecting shaft (35). One end of the helical gear (24) is provided with a helical gear (24) that meshes with the second helical gear ring (36). Limiting shaft holes (311) are opened at both ends of the upper part of the support frame (310). Limiting guide wheels (32) are evenly arranged on the upper outer surface of the support frame (310) and at the edge of the second limiting slide (33). A drive sprocket (312) is rotatably engaged inside the top center of the support frame (310). The drive sprocket (312) is slidably sleeved on the outer surface of the connecting shaft (35).

3. The edge grinding device for injection molding of plastic products according to claim 2, characterized in that, The clamping push rod (11) is slidably inserted into the upper middle surface of the support frame (310) through the limiting sleeve (39). The outer surface of the limiting sleeve (39) is provided with a snap-fit ​​groove. The first connecting plate (15) is slidably snap-fitted into the snap-fit ​​groove on the outer surface of one end of the clamping push rod (11).

4. The edge grinding device for injection molding of plastic products according to claim 3, characterized in that, The first sprocket drive shaft (21) and the second sprocket drive shaft (23) are rotatably engaged with the upper outer surface of the support frame (310) through the limiting shaft hole (311), and the second connecting plate (18) is rotatably engaged with the bottom outer surface of the connecting shaft (35) through the sleeve hole (17).

5. The edge grinding device for injection molding of plastic products according to claim 4, characterized in that, The two ends of the second connecting plate (18) are slidably engaged with the upper ends of the support frame (310) through the second limiting slide (33). The traction rope (16) is slidably attached to the outer surface of the limiting guide wheel (32). The outer surface of the connecting shaft (35) is provided with a sliding groove. The first helical gear ring (12), the second helical gear ring (36), the drive sprocket (312), and the inner surface are all provided with locking teeth.

6. The edge grinding device for injection molding of plastic products according to claim 5, characterized in that, The second helical gear ring (36) and the drive sprocket (312) are slidably engaged with the groove on the outer surface of the connecting shaft (35) through the snap teeth on the inner surface. The transmission chain (22) is meshed with the drive sprocket (312). The first sprocket drive shaft (21) and the second sprocket drive shaft (23) are meshed with the first helical gear ring (12) through the helical gear (24) at the bottom.

7. The edge grinding device for injection molding of plastic products according to claim 6, characterized in that, The first helical gear rings (12) on the outer surfaces of the two sets of clamping push rods (11) are arranged in the same direction, and the two sets of first helical gear rings (12) are respectively rotated and engaged with the middle outer surface of the support frame (310) and one end face of the limiting sleeve (39).

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