Novel device for rounding outer wall of injection molding cup

A novel device combining a clamping mechanism and a cutting mechanism automates the trimming of the outer wall of injection-molded cups, solving the problems of high labor intensity and inconsistent quality caused by manual operation, and achieving efficient and stable product rounding effect.

CN223982036UActive Publication Date: 2026-03-10SHANTOU KANGJIABAO PLASTIC PROD IND CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2026-02-05
Publication Date
2026-03-10

AI Technical Summary

Technical Problem

In the existing technology, the rounding of the outer wall of injection molded cups relies on manual operation, which results in high labor intensity, low efficiency and inconsistent product quality.

Method used

A novel device combining a clamping mechanism and a cutting mechanism is used to fix and hold the injection-molded cup with a fixed plate and a floating locking device, and to automatically trim the outer wall of the cup body with a scraper blade.

Benefits of technology

This achieves consistent smoothness on the outer curved surface of the injection molded cup, improving production efficiency and product quality stability.

✦ Generated by Eureka AI based on patent content.

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    Figure CN223982036U_ABST
Patent Text Reader

Abstract

The utility model discloses a novel device for rounding the outer wall of an injection molding cup, which comprises a first driving motor, a feed mechanism and a clamping mechanism for driving the injection molding cup to rotate, the feed mechanism is arranged at the side position of the clamping mechanism, and the clamping mechanism comprises a fixed disc, a floating locking piece and a spring. The fixing disc is fixedly connected with a motor shaft of the first driving motor, the floating clamping and locking piece is movably arranged between the fixing disc and the first driving motor, and the two ends of the spring abut against the floating clamping and locking piece and an installation base of the first driving motor respectively. The structural design that the clamping mechanism and the feed mechanism are combined is adopted, the fixing disc and the floating clamping and locking piece of the clamping mechanism are matched to fix and clamp the injection molding cups, the smoothness of the curved surfaces of the outer walls of all the injection molding cups after finishing treatment is consistent, and stable quality of products is effectively achieved.
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Description

Technical Field

[0001] This utility model relates to the field of surface finishing technology for injection molded cups, and in particular to a novel device for rounding the outer wall of injection molded cups. Background Technology

[0002] For some injection-molded cup products with high surface quality requirements, the outer wall often needs secondary finishing after injection molding to achieve a smooth, rounded surface. Currently, this crucial process mainly relies on manual operation: workers use specialized scrapers to manually scrape the injection-molded cup body, gradually refining its outer shape and surface condition.

[0003] This traditional method of operation is not only labor-intensive and requires a high level of experience from operators, but also exposes many limitations in actual production. On the one hand, manual finishing is inefficient and difficult to adapt to the needs of large-scale, fast-paced production; on the other hand, due to the limited stability and consistency of manual operation, products processed by different workers, or even by the same worker at different times, may vary in terms of the smoothness of the outer curved surface, the continuity of curvature, and the overall visual effect, resulting in inconsistent product quality. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a novel device for rounding the outer wall of injection molded cups.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a novel device for rounding the outer wall of an injection-molded cup, comprising a first drive motor, a cutting mechanism, and a clamping mechanism for rotating the injection-molded cup. The cutting mechanism is located on the side of the clamping mechanism. The clamping mechanism includes a fixed plate, a floating locking element, and a spring. The fixed plate is fixedly connected to the motor shaft of the first drive motor. The floating locking element is movably disposed between the fixed plate and the first drive motor. The two ends of the spring respectively abut against the floating locking element and the mounting base of the first drive motor.

[0006] To further elaborate, the front end of the fixed plate is provided with an annular groove, and each of the four corners of the annular groove is provided with an outward protruding groove that mates with the protruding teeth of the injection molded cup. An inner arc channel connects two adjacent outward protruding grooves. The inner arc channel is provided with a limiting protruding step. The floating locking component is provided with a limiting locking finger that mates with the limiting protruding step. The side of the limiting locking finger that is close to the limiting protruding step is a vertical edge, and the other side of the limiting locking finger that is away from the limiting protruding step is an arc-shaped edge.

[0007] To further elaborate, the outer circumferential wall of the floating locking component is provided with a protrusion, the limiting locking finger is located at the protrusion, and the rear end of the fixed plate is provided with a groove that cooperates with the protrusion.

[0008] To further elaborate, the rear end of the fixed disk is provided with a positioning cylinder, and the floating locking component is provided with an installation positioning hole that cooperates with the positioning cylinder. The motor shaft of the first drive motor passes through the floating locking component and is fixedly connected to the positioning cylinder of the fixed disk.

[0009] To further elaborate, the feed mechanism includes a base, a second drive motor, a lead screw, and a movable seat. The base is fixedly installed at the mounting seat, and two support seats for supporting the lead screw are fixedly installed at the base. The second drive motor is connected to the end of the lead screw, the movable seat is connected to the lead screw nut of the lead screw, and a scraper blade is fixedly installed at the movable seat.

[0010] To elaborate further, the movable seat is provided with a clamping plate for pressing and clamping the scraper blade.

[0011] To elaborate further, a slider is provided below the movable seat, and the base is provided with a slide section that cooperates with the slider.

[0012] The beneficial effects of this utility model are as follows: This utility model adopts a structural design that combines a clamping mechanism and a cutting mechanism. The fixed plate and floating locking parts of the clamping mechanism work together to fix and hold the injection cup. After the finishing process, the smoothness of the outer wall surface of each injection cup is consistent, which effectively achieves the stability of product quality. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is an exploded view of the structure of this utility model.

[0015] Figure 3 This is a schematic diagram of the structure of the present invention when installing an injection-molded cup.

[0016] Figure 4 This is a partial structural cross-sectional view of the injection cup during installation.

[0017] Figure 5 For floating card lock components Figure 4 A partial cross-sectional view of the convex teeth that hold the injection cup in place after it is turned (Note: the first drive motor has been hidden).

[0018] Figure 6 A partial cross-sectional view of the structure of the floating locking component retracting when the injection cup is pressed (Note: the first drive motor has been hidden).

[0019] Figure 7 This is a partial structural cross-sectional view of the injection cup during its removal (Note: the first drive motor has been hidden).

[0020] Figure 8 This is a schematic diagram of the fixed disk structure.

[0021] Reference numerals: 10. First drive motor; 11. Motor shaft; 12. Mounting base; 20. Clamping mechanism; 21. Fixed plate; 211. Circular groove; 212. Outer protruding groove; 213. Inner arc track; 214. Limiting step; 215. Groove; 216. Positioning cylinder; 22. Floating locking element; 221. Limiting finger; 2211. Vertical edge; 2212. Arc edge; 222. Protrusion; 223. Mounting positioning hole; 23. Spring; 31. Base; 311. Slide rail; 32. Second drive motor; 33. Lead screw; 34. Moving seat; 35. Support seat; 36. Scraper blade; 37. Clamping plate; 38. Slider; 40. Injection cup; 41. Protruding tooth. Detailed Implementation

[0022] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0023] Combined with appendix Figure 1 and attached Figure 2 As shown, a novel device for rounding the outer wall of an injection-molded cup includes a first drive motor 10, a cutting mechanism, and a clamping mechanism 20 for rotating the injection-molded cup. The cutting mechanism is located to the side of the clamping mechanism 20, as shown in the attached figure. Figure 2 As shown, the clamping mechanism 20 includes a fixed plate 21, a floating locking element 22, and a spring 23. The fixed plate 21 is fixedly connected to the motor shaft 11 of the first drive motor 10. The floating locking element 22 is movably disposed between the fixed plate 21 and the first drive motor 10. The two ends of the spring 23 abut against the floating locking element 22 and the mounting base 12 of the first drive motor 10, respectively.

[0024] Combined with appendix Figure 1 Appendix Figure 2 and attached Figure 5 As shown, the floating locking component 22 has a protrusion 222 on its outer circumference, a limiting locking finger 221 is located at the protrusion 222, and the rear end of the fixed plate 21 has a groove 215 that mates with the protrusion 222. (See attached diagram) Figure 5 As shown, the rear end of the fixed disk 21 is provided with a positioning cylinder 216, and the floating locking member 22 is provided with a mounting positioning hole 223 that cooperates with the positioning cylinder 216. The motor shaft 11 of the first drive motor 10 passes through the floating locking member 22 and is fixedly connected to the positioning cylinder 216 of the fixed disk 21.

[0025] Combined with appendix Figure 3 and attached Figure 4As shown, the front end of the fixed plate 21 is provided with an annular groove 211. At the four corners of the annular groove 211, there are external protruding grooves 212 that cooperate with the protruding teeth 41 of the injection cup mouth. An inner arc channel 213 is connected between two adjacent external protruding grooves 212. The inner arc channel 213 is provided with a limiting protrusion 214. The floating locking member 22 is provided with a limiting locking finger 221 that cooperates with the limiting protrusion 214. The side of the limiting locking finger 221 that is close to the limiting protrusion 214 is a vertical edge 2211, and the other side of the limiting locking finger 221 that is away from the limiting protrusion 214 is an arc-shaped edge 2212.

[0026] As attached Figure 2 As shown, before trimming the outer wall of the injection molded cup, the injection molded cup 40 must first be installed on the fixing plate 21 of the clamping mechanism 20. During installation, the mouth of the injection molded cup 40 is aligned with the annular groove 211 at the front end of the fixing plate 21, and the protruding tooth 41 of the injection molded cup 40 is aligned with the outer protruding groove 212 of the fixing plate 21.

[0027] After the protruding tooth 41 of the injection cup 40 is inserted into the outer protruding groove 212 of the fixing plate 21, the worker needs to manually screw on the injection cup 40. (See attached...) Figure 4 and attached Figure 5 As shown, when the injection-molded cup 40 is screwed on, the protruding tooth 41 of the injection-molded cup 40 slides along the inner arc 213 of the fixed plate 21. Since the limiting finger 221 of the floating locking member 22 has an arc-shaped edge 2212, the protruding tooth 41 can easily pass through the limiting finger 221 of the floating locking member 22 through the arc-shaped edge 2212 until it is blocked by the limiting protrusion 214 of the fixed plate 21. At this time, the protruding tooth 41 is restricted between the limiting protrusion 214 and the vertical edge 2211 of the limiting finger 221, so that the clamping mechanism 20 can fix and clamp the injection-molded cup 40. Then the first drive motor 10 can be turned on to drive the injection-molded cup 40 to rotate in place, and then, in conjunction with the feed mechanism, the outer wall of the cup can be trimmed.

[0028] Combined with appendix Figure 1 and attached Figure 2As shown, the feed mechanism includes a base 31, a second drive motor 32, a lead screw 33, and a movable seat 34. The base 31 is fixedly installed at the mounting base 12, and two support seats 35 for supporting the lead screw 33 are fixedly installed at the base 31. The second drive motor 32 is connected to the end of the lead screw 33. The movable seat 34 is connected to the lead screw nut of the lead screw 33 (note: not shown in the attached figure), and a scraper blade 36 is fixedly installed at the movable seat 34. A clamping plate 37 for clamping the scraper blade 36 is provided at the movable seat 34. A slider 38 is provided below the movable seat 34, and a slide rail 311 that cooperates with the slider 38 is provided at the base 31. The second drive motor 32 can drive the movable seat 34 to move horizontally through the lead screw 33. The movable seat 34 can drive the scraper blade 36 to slowly approach the injection molded cup 40, thereby trimming the outer wall of the cup. After the trimming, the outer wall surface of each injection molded cup has a consistent smoothness, effectively achieving stable product quality.

[0029] In this utility model, terms such as "first" and "second" are used to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. This is not intended to limit the technical scope of this utility model. Any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model shall still fall within the scope of the technical solution of this utility model.

Claims

1. A novel device for rounding the outer wall of an injection molded cup, characterized by: The utility model provides a kind of injection cup rotating device, including first drive motor (10), feed mechanism and the clamping mechanism (20) for driving injection cup rotation, the feed mechanism is located at the side of the clamping mechanism (20), the clamping mechanism (20) includes fixed disc (21), floating locking piece (22), spring (23), the fixed disc (21) is fixedly connected with motor shaft (11) of the first drive motor (10), the floating locking piece (22) is movably arranged between the fixed disc (21) and the first drive motor (10), the both ends of the spring (23) are respectively contacted with the floating locking piece (22) and the mounting seat (12) of the first drive motor (10).

2. A novel device for rounding the outer wall of an injection molded cup according to claim 1, characterized in that: The front end of the fixed disc (21) is provided with a circular groove (211), the four corners of the circular groove (211) are provided with an outer convex groove (212) matched with the convex tooth part (41) of the injection cup mouth, the inner arc (213) is communicated between the adjacent two outer convex grooves (212), the inner arc (213) is provided with a limiting convex step part (214), the floating locking piece (22) is provided with a limiting clamping finger part (221) matched with the limiting convex step part (214), the side of the limiting clamping finger part (221) close to the limiting convex step part (214) is a vertical edge (2211), the other side of the limiting clamping finger part (221) away from the limiting convex step part (214) is an arc edge (2212).

3. A novel device for rounding the outer wall of an injection molded cup according to claim 2, characterized in that: The circumferential outer wall of the floating locking piece (22) is provided with a convex part (222), the limiting clamping finger part (221) is arranged at the convex part (222), and the rear end of the fixed disc (21) is provided with a groove part (215) matched with the convex part (222).

4. A novel device for rounding the outer wall of an injection molded cup according to claim 1, characterized in that: The rear end of the fixed disc (21) is provided with a positioning cylinder part (216), the floating locking piece (22) is provided with a mounting positioning hole (223) matched with the positioning cylinder part (216), the motor shaft (11) of the first drive motor (10) passes through the floating locking piece (22) and is fixedly connected with the positioning cylinder part (216) of the fixed disc (21).

5. A novel device for rounding the outer wall of an injection molded cup according to claim 1, characterized in that: The feed mechanism includes a base (31), a second drive motor (32), a screw member (33), and a moving seat (34), the base (31) is fixedly installed at the mounting seat (12), two support seats (35) for supporting the screw member (33) are fixedly installed at the base (31), the second drive motor (32) is connected with the end of the screw member (33), the moving seat (34) is connected with the screw nut of the screw member (33), and the scraper blade (36) is fixedly installed at the moving seat (34).

6. A novel device for rounding the outer wall of an injection molded cup according to claim 5, characterized in that: The moving seat (34) is provided with a clamping plate (37) for pressing and clamping the scraper blade (36).

7. A novel device for rounding the outer wall of an injection molded cup according to claim 5, characterized in that: The moving seat (34) is provided with a sliding block (38) below, and the base (31) is provided with a sliding groove (311) matched with the sliding block (38).