High-precision shearing mechanism for plastic residual water gap

By designing an automated, high-precision shearing mechanism, the problems of low efficiency and poor flatness in manual shearing of plastic sprues were solved, achieving efficient and flat sprue shearing, thus improving product quality and production efficiency.

CN224210439UActive Publication Date: 2026-05-08JIANGSU ZHUANZHUAN TECH CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIANGSU ZHUANZHUAN TECH CO LTD
Filing Date
2025-05-27
Publication Date
2026-05-08

AI Technical Summary

Technical Problem

In existing technologies, manual cutting of plastic sprues is inefficient, results in poor surface flatness, and easily leads to surface defects in products.

Method used

A high-precision shearing mechanism was designed, comprising a shearing device, an operating table, an electric cylinder, a shearing blade, and a limiting structure, to achieve automated shearing of plastic sprues. The electric cylinder drives the shearing blade for precise cutting.

Benefits of technology

It achieves efficient and smooth sprue shearing, avoids product surface defects caused by manual operation, and improves production efficiency and product appearance consistency.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224210439U_ABST
    Figure CN224210439U_ABST
Patent Text Reader

Abstract

The utility model relates to the technical field of plastic residual water gap shearing, in particular to a high-precision shearing mechanism for a plastic residual water gap, which comprises shearing equipment and a plastic reserved water gap product, a plurality of limiting plates are fixedly mounted on the side surface of an operation table, and first limiting rods connected with the limiting plates are fixedly mounted on the operation table; a discharging die used in cooperation with the shear knife is installed on the shearing device, and a discharging sliding way connected with the shearing device is arranged below the plastic water gap product. Compared with a traditional mode of manually cutting off the water gap on the plastic water gap reserved product, the water gap shearing device has the advantages that the water gap can be automatically sheared through the arrangement of the shearing structure, the high flatness of a shearing surface and the consistency of the appearance of the product are kept, and the device does not depend on the experience of manual operation; and burrs, scratches and the like are prevented from being generated on the product by manual tools such as scissors and blades, and the device can be efficiently applied to large-batch production operation.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to a sprue cutting mechanism, and more particularly to a high-precision sprue cutting mechanism for plastic residual sprues, belonging to the field of plastic residual sprue cutting technology. Background Technology

[0002] In industrial manufacturing, many workpieces are made using casting or injection molding processes. After casting or injection molding, workpieces will have sprue marks remaining. In subsequent processing of the workpiece, it is necessary to remove the sprue marks that are connected to the workpiece.

[0003] The removal of sprue nozzles is mostly done manually using hand tools. However, manual operation is highly dependent on the operator's experience, and the flatness of the cut surface is poor, which can easily lead to product appearance defects. At the same time, hand tools (such as scissors and blades) are prone to producing burrs and scratches, affecting the surface quality of the product. Moreover, manual cutting is inefficient and cannot meet the needs of large-scale production operations. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a high-precision cutting mechanism for plastic residual sprue that can automatically cut the sprue.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0006] A high-precision shearing mechanism for plastic sprue residue includes a shearing device and a plastic sprue residue product. An operating table is fixedly mounted on the top of the shearing device. A shearing structure is provided on the operating table. The shearing structure includes an electric cylinder fixedly mounted on the top of the operating table. A connecting plate is fixedly mounted on the output end of the electric cylinder. Multiple vertical plates are fixedly mounted on the bottom of the connecting plate. Shearing blades are fixedly mounted on the vertical plates. Multiple limiting plates are fixedly mounted on the side of the operating table. A first limiting rod connected to the limiting plates is fixedly mounted on the operating table. A feeding mold for use with the shearing blades is installed on the shearing device. A discharge chute connected to the shearing device is provided below the plastic sprue residue product.

[0007] Furthermore, the bottom of the shearing device is fixedly equipped with multiple telescopic legs, and one side of each telescopic leg is provided with a caster wheel that is connected to the shearing device.

[0008] Furthermore, an electric telescopic rod is installed on the inner side of the shearing device, and a first fixing block is fixedly installed at the output end of the electric telescopic rod, with a push plate installed at one end of the first fixing block.

[0009] Furthermore, a fixed frame connected to the first fixed block is fixedly installed on one side of the push plate. Both the fixed frame and the first fixed block have connection holes. A plug is movably installed inside the connection hole, and a latch is fixedly installed at the end of the plug.

[0010] Furthermore, the bottom of the feeding mold is fixedly equipped with a plurality of second fixing blocks, the shearing device is provided with a plurality of fixing holes adapted to the second fixing blocks, the shearing device is provided with a plurality of limiting holes, and the shearing device is equipped with a second limiting rod connected to the second fixing blocks.

[0011] Furthermore, a support frame connected to the shearing device is fixedly installed below the discharge chute, and a collection box is provided inside the support frame, with a handle fixedly installed at one end of the collection box.

[0012] Furthermore, the support frame is provided with multiple sliding grooves, and a sliding rod connected to the collection box is movably installed inside the sliding groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] Compared to the traditional method of manually cutting off sprue marks on plastic products, this invention uses a shearing structure to automatically cut the sprue marks, maintaining a high degree of flatness on the cut surface and consistency in product appearance. It does not rely on manual experience and avoids burrs and scratches caused by hand tools such as scissors and blades on the product, making it highly efficient for mass production operations. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the discharge chute structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the push plate structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the insertion rod structure of this utility model;

[0019] Figure 5 For the present utility model Figure 2 Enlarged view of point A in the middle;

[0020] Figure 6 For the present utility model Figure 2 Enlarged view of section B in the middle.

[0021] In the diagram, 1. Shearing equipment; 2. Plastic sprue product; 3. Operating table; 4. Shearing structure; 5. Electric cylinder; 6. Connecting plate; 7. Vertical plate; 8. Shearing blade; 9. Limiting plate; 10. First limiting rod; 11. Feeding mold; 12. Discharge slide; 13. Telescopic support leg; 14. Casters; 15. Electric telescopic rod; 16. First fixing block; 17. Push plate; 18. Fixing frame; 19. Connecting hole; 20. Insert rod; 21. Buckle; 22. Second fixing block; 23. Fixing hole; 24. Limiting hole; 25. Second limiting rod; 26. Support frame; 27. Collection box; 28. Handle; 29. ​​Slide groove; 30. Slide rod. Detailed Implementation

[0022] The technical solution of this utility model will now be clearly and completely described in conjunction with the accompanying drawings and specific embodiments.

[0023] like Figures 1-6 As shown, a high-precision shearing mechanism for plastic sprue residue includes a shearing device 1 and a plastic sprue product 2. An operating table 3 is fixedly installed on the top of the shearing device 1. A shearing structure 4 is provided on the operating table 3. The shearing structure 4 includes an electric cylinder 5 fixedly installed on the top of the operating table 3. A connecting plate 6 is fixedly installed on the output end of the electric cylinder 5. Multiple vertical plates 7 are fixedly installed on the bottom of the connecting plate 6. A shearing blade 8 is fixedly installed on the vertical plate 7. Multiple limiting plates 9 are fixedly installed on the side of the operating table 3. A first limiting rod 10 connected to the limiting plate 9 is fixedly installed on the operating table 3. A feeding mold 11 that works with the shearing blade 8 is installed on the shearing device 1. A discharge slide 12 connected to the shearing device 1 is provided below the plastic sprue product 2.

[0024] like Figure 1 and Figure 2 As shown, multiple telescopic support legs 13 are fixedly installed at the bottom of the shearing device 1. One side of each telescopic support leg 13 is provided with a caster wheel 14 connected to the shearing device 1. When the multiple telescopic support legs 13 are retracted, the multiple caster wheels 14 can contact the ground to facilitate the movement of the shearing device 1. When the telescopic support legs 13 are extended and in contact with the ground, causing the multiple caster wheels 14 to be suspended in the air, the shearing device 1 can remain stable under the support of the multiple telescopic support legs 13.

[0025] like Figure 4 As shown, an electric telescopic rod 15 is installed inside the shearing device 1. A first fixing block 16 is fixedly installed at the output end of the electric telescopic rod 15, and a push plate 17 is installed at one end of the first fixing block 16. When the electric telescopic rod 15 is started, it extends and drives the push plate 17 to push the product remaining inside the discharge slide 12, so that it slides out of the discharge slide 12. There is no need for personnel to manually remove the product from the discharge slide 12, which improves efficiency and operational safety.

[0026] like Figure 4 As shown, a fixed frame 18 connected to the first fixed block 16 is fixedly installed on one side of the push plate 17. Both the fixed frame 18 and the first fixed block 16 have connection holes 19. A plug rod 20 is movably installed inside the connection hole 19. A latch 21 is fixedly installed at one end of the plug rod 20. After the plug rod 20 is inserted into the connection hole 19, the angle of the latch 21 is adjusted to be perpendicular to the angle of the connection hole 19 by rotating the plug rod 20. Then, the first fixed block 16 can be fixed inside the fixed frame 18, so that the push plate 17 is installed on the electric telescopic rod 15.

[0027] like Figure 5 As shown, a plurality of second fixing blocks 22 are fixedly installed at the bottom of the feeding mold 11. A plurality of fixing holes 23 adapted to the second fixing blocks 22 are opened on the shearing device 1. A plurality of limiting holes 24 are opened on the shearing device 1. A second limiting rod 25 connected to the second fixing blocks 22 is installed on the shearing device 1. The second fixing blocks 22 at the bottom of the feeding mold 11 can be engaged inside the fixing holes 23. The second limiting rod 25 is inserted into the limiting hole 24 to connect the second fixing blocks 22 to the shearing device 1, so that the feeding mold 11 is fixed on the shearing device 1. After the second limiting rod 25 is pulled out from the limiting hole 24, the feeding mold 11 can be removed from the shearing device 1, which facilitates the disassembly and replacement of the feeding mold 11.

[0028] like Figure 2 and Figure 6 As shown, a support frame 26 connected to the shearing device 1 is fixedly installed below the discharge chute 12. A collection box 27 is provided inside the support frame 26, and a handle 28 is fixedly installed at one end of the collection box 27. The material sliding down the discharge chute 12 can fall into the collection box 27. When the collection box 27 is full, the collection box 27 can be pulled out through the handle 28 to process the material inside.

[0029] like Figure 6 As shown, the support frame 26 has multiple sliding grooves 29, and a sliding rod 30 connected to the collection box 27 is movably installed inside the sliding groove 29. The sliding grooves 29 and the sliding rod 30 can reduce the friction between the collection box 27 and the support frame 26, making the collection box 27 slide more smoothly inside the support frame 26 and reducing the wear between the collection box 27 and the support frame 26.

[0030] like Figures 1-6 As shown, the working process of the high-precision shearing mechanism for residual plastic sprues provided in this embodiment is as follows:

[0031] First, place the injection-molded plastic sprue product 2 on the discharge mold 11, ensuring that the position of the product on the plastic sprue product 2 is consistent with the hole position on the discharge mold 11. Start the electric cylinder 5 to drive the connecting plate 6 to descend. During the descent of the connecting plate 6, the vertical plate 7 pushes the shearing blade 8 with a downward force. When the shearing blade 8 reaches the position of the plastic sprue product 2, it can cut the sprue. The cut product falls through the hole on the discharge mold 11 into the discharge slide 12. Since the discharge slide 12 is designed with an inclination, the product falling into the discharge slide 12 will slide out. Multiple first limit rods 10 can ensure the stability of the shearing blade 8 when the connecting plate 6 moves up and down, preventing the shearing blade 8 from deviating when descending, and preventing the cutting accuracy from being affected by the deviation of the shearing blade 8. The sprue waste left on the discharge mold 11 after cutting can be removed.

[0032] The foregoing description illustrates and describes preferred embodiments of the present invention. It should be understood that the present invention is not limited to the forms disclosed herein. Any modifications and variations made by those skilled in the art without departing from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A high-precision shearing mechanism for plastic sprue residue, comprising a shearing device (1) and a plastic sprue residue product (2), wherein an operating table (3) is fixedly installed on the top of the shearing device (1), characterized in that: The operating table (3) is provided with a shearing structure (4), which includes an electric cylinder (5) fixedly installed on the top of the operating table (3). A connecting plate (6) is fixedly installed at the output end of the electric cylinder (5). Multiple upright plates (7) are fixedly installed at the bottom of the connecting plate (6). A shearing blade (8) is fixedly installed on the upright plate (7). Multiple limiting plates (9) are fixedly installed on the side of the operating table (3). A first limiting rod (10) connected to the limiting plate (9) is fixedly installed on the operating table (3). A feeding mold (11) for use with the shearing blade (8) is installed on the shearing device (1). A discharge slide (12) connected to the shearing device (1) is provided below the plastic sprue product (2).

2. The high-precision shearing mechanism for residual plastic sprues according to claim 1, characterized in that: The bottom of the shearing device (1) is fixedly equipped with multiple telescopic legs (13), and one side of each telescopic leg (13) is provided with a universal wheel (14) connected to the shearing device (1).

3. The high-precision shearing mechanism for residual plastic sprues according to claim 1, characterized in that: An electric telescopic rod (15) is installed on the inner side of the shearing device (1). A first fixing block (16) is fixedly installed at the output end of the electric telescopic rod (15). A push plate (17) is installed at one end of the first fixing block (16).

4. The high-precision shearing mechanism for residual plastic sprues according to claim 3, characterized in that: A fixed frame (18) connected to the first fixed block (16) is fixedly installed on one side of the push plate (17). Both the fixed frame (18) and the first fixed block (16) are provided with connection holes (19). A plug rod (20) is movably installed inside the connection hole (19). A latch (21) is fixedly installed at the end of the plug rod (20).

5. The high-precision shearing mechanism for residual plastic sprues according to claim 1, characterized in that: The bottom of the feeding mold (11) is fixedly installed with a plurality of second fixing blocks (22), the shearing device (1) is provided with a plurality of fixing holes (23) adapted to the second fixing blocks (22), the shearing device (1) is provided with a plurality of limiting holes (24), and the shearing device (1) is provided with a second limiting rod (25) connected to the second fixing blocks (22).

6. The high-precision shearing mechanism for residual plastic sprues according to claim 1, characterized in that: A support frame (26) connected to the shearing device (1) is fixedly installed below the discharge chute (12), and a collection box (27) is provided inside the support frame (26).

7. The high-precision shearing mechanism for residual plastic sprues according to claim 6, characterized in that: The support frame (26) is provided with multiple grooves (29), and a slide rod (30) connected to the collection box (27) is movably installed inside the groove (29).