Trimming die for plastic part machining

By introducing a rolling ring and a rubber rod to drive the swing arm in the trimming mold, the problem of plastic waste accumulation is solved, efficient waste removal is achieved, and equipment stability and product quality are improved.

CN223989682UActive Publication Date: 2026-03-13SUZHOU SHIROTOKI IND CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-10
Publication Date
2026-03-13

AI Technical Summary

Technical Problem

Traditional trimming equipment tends to accumulate plastic waste during the cutting process, leading to decreased cutting efficiency, increased blade wear, and potentially even equipment malfunctions or product defects.

Method used

A trimming mold for processing plastic parts was designed. A rolling ring drives a rubber rod to push a swinging rod to reciprocate and remove accumulated waste. The movement of the swinging rod is assisted by tension and return springs to ensure timely removal of waste.

Benefits of technology

It improves waste removal efficiency, prevents equipment failure, extends equipment life, and ensures cutting quality and product qualification rate.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a trimming die for plastic part processing, which comprises a trimming machine main body, a sleeve main body is arranged at the external position of the upper side of the trimming machine main body, a trimming blade is arranged inside the tail end of the upper side of the sleeve main body, and a rolling circular ring is arranged at the external position of the upper side of the sleeve main body. Rubber rods are arranged at the left end and the right end of the inner side of the rolling ring correspondingly, an embedding groove is formed in the connecting position of the rolling ring and the sleeve body, the waste removing efficiency is improved, and rotation of the rolling ring pushes the rubber rods to make contact with and drive the swing rods to swing in a reciprocating mode. Plastic waste accumulated in a trimming area can be effectively removed through the continuous swinging action, the situation that the cutting effect is affected by waste accumulation is prevented, due to rapid rotation of a rolling circular ring and the auxiliary effect of a spring, a swinging rod can achieve high-frequency reciprocating swinging, it is ensured that the waste is cleaned in time, and the cutting efficiency is improved. And the production interruption or the quality problem caused by waste accumulation is avoided.
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Description

Technical Field

[0001] This utility model belongs to the technical field of trimming molds, specifically relating to a trimming mold for processing plastic parts. Background Technology

[0002] In the field of plastic parts processing, excess burrs often appear after plastic molding, affecting the product's appearance and precision. Trimming dies have emerged to address this issue; they are an indispensable key tool in plastic parts processing. They can quickly remove excess material after the plastic parts have cooled and solidified, resulting in neat, smooth edges that meet high-quality standards.

[0003] In traditional trimming equipment, plastic waste tends to accumulate around the trimming blade during the cutting process, leading to decreased cutting efficiency, accelerated blade wear, and even potential equipment malfunctions or product defects. A structure capable of cleaning up waste during the trimming process is needed to solve this problem. Utility Model Content

[0004] The purpose of this utility model is to provide a trimming mold for processing plastic parts, so as to solve the problem that in the above-mentioned traditional trimming equipment, plastic waste tends to accumulate around the trimming blade during the cutting process, which leads to reduced cutting efficiency, increased blade wear, and may even cause equipment failure or product defects.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a trimming mold for processing plastic parts, comprising a trimming machine body;

[0006] A sleeve body is provided at the upper outer position of the body of the trimming machine, and a trimming blade is provided inside the upper end of the sleeve body.

[0007] A rolling ring is provided on the upper outer side of the sleeve body, and rubber rods are provided on the left and right ends of the inner side of the rolling ring. A groove is provided at the connection position between the rolling ring and the sleeve body.

[0008] A rotating shaft is provided inside the upper end of the body of the trimming machine. A swing rod is provided through the upper end of the rotating shaft. A tension spring is provided at the bottom of the swing rod and connected to the body of the trimming machine. A return spring is provided at the upper right side of the swing rod and connected to the body of the trimming machine.

[0009] Preferably, the trimming blade is arc-shaped, and the upper end of the swing rod is flush with the arc of the trimming blade.

[0010] Preferably, the swing arm rotates on the rotating shaft, and the tension spring and return spring are connected to the trimming machine body and the swing arm respectively by hook connection.

[0011] Preferably, the rolling ring rotates at the front end of the trimming machine body via a groove, and the rubber rod is connected to the rolling ring via a threaded connection.

[0012] Preferably, the rubber rod rotates with the rolling ring, and the rubber rod contacts the end of the swing rod during the rotation.

[0013] Preferably, the sleeve body is connected to the trimming machine body via a sleeve locking button, the trimming blade is connected to the trimming machine body via a snap-fit ​​connection, and a blade replacement button for controlling the degree of clamping of the trimming blade is provided on the lower front side of the trimming machine body.

[0014] Compared with the prior art, this utility model provides a trimming mold for processing plastic parts, which has the following beneficial effects:

[0015] 1. Improves waste removal efficiency: The rotation of the rolling ring pushes the rubber rod to contact and drive the swing arm to reciprocate. This continuous swinging motion effectively removes plastic waste accumulated in the trimming area, preventing waste buildup from affecting the cutting effect.

[0016] Due to the rapid rotation of the rolling ring and the assistance of the spring, the swing rod can achieve high-frequency reciprocating swing, ensuring that waste is cleaned up in a timely manner and avoiding production interruptions or quality problems caused by waste accumulation.

[0017] 2. The reciprocating motion of the swing arm can effectively prevent plastic waste from accumulating around the trimming blade, reducing the risk of equipment failure due to waste blockage and improving the stability and reliability of the equipment.

[0018] By promptly removing waste, wear on trimming blades and other mechanical parts is reduced, thereby extending the overall service life of the equipment.

[0019] 3. The swing arm continuously removes accumulated waste, ensuring that the trimming area remains clean at all times. This helps maintain high-quality cutting results and avoids uneven cutting or rough surface problems caused by waste residue.

[0020] Because waste is removed in a timely manner, product defects caused by waste interference are reduced, and the pass rate and consistency of the final product are improved. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the device in this utility model.

[0022] Figure 2 This is a schematic diagram of the structure of the device after it is tilted in this utility model.

[0023] Figure 3 In this utility model Figure 1 A magnified structural diagram of the inner circular region.

[0024] Figure 4 This is a schematic diagram of the linkage between the rolling ring and the swing rod in this utility model.

[0025] In the diagram: 1. Trimming machine body; 2. Blade replacement button; 3. Sleeve locking button; 4. Rolling ring; 5. Trimming blade; 6. Swing rod; 7. Sleeve body; 8. Rubber rod; 9. Groove; 10. Return spring; 11. Tension spring; 12. Shaft. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] This utility model provides, for example Figure 1-4 The shown is a trimming mold for processing plastic parts, including a trimming machine body 1;

[0028] A sleeve body 7 is provided at the upper outer position of the trimming machine body 1, and a trimming blade 5 is provided inside the upper end of the sleeve body 7.

[0029] A rolling ring 4 is provided on the upper outer side of the sleeve body 7. Rubber rods 8 are provided on the left and right ends of the inner side of the rolling ring 4. A groove 9 is provided at the connection position between the rolling ring 4 and the sleeve body 7.

[0030] A rotating shaft 12 is provided inside the upper end of the trimming machine body 1. A swing rod 6 is provided through the upper end of the rotating shaft 12. A tension spring 11 is provided at the bottom of the swing rod 6 and connected to the trimming machine body 1. A return spring 10 is provided at the upper right side of the swing rod 6 and connected to the trimming machine body 1.

[0031] In this embodiment, as Figure 1-4 As shown, a trimming mold for processing plastic parts according to the present invention includes main components such as a trimming machine body 1, a sleeve body 7, a rolling ring 4, a trimming blade 5, a swing rod 6, a tension spring 11, and a return spring 10.

[0032] The trimming machine body 1 is the basic frame of the entire device, and a rotating shaft 12 is installed inside the upper end of it. A blade replacement button 2 is installed on the lower front side of the trimming machine body 1 to control the clamping degree of the trimming blade 5.

[0033] The sleeve body 7 is located on the upper outer side of the trimming machine body 1 and is connected to the trimming machine body 1 via the sleeve locking button 3. A trimming blade 5 is provided inside the upper end of the sleeve body 7. The trimming blade 5 is arc-shaped to adapt to the edges of plastic parts of different shapes.

[0034] The rolling ring 4 is located on the upper outer side of the sleeve body 7 and is rotatably connected to the trimming machine body 1 through the groove 9. Rubber rods 8 are respectively provided at the left and right ends of the inner side of the rolling ring 4. The rubber rods 8 are fixed to the rolling ring 4 by threaded connection and rotate together with the rolling ring 4.

[0035] Users can place the rolling ring 4 on the edge of the plastic part to be repaired and move it to roll it.

[0036] The bottom of the swing arm 6 is connected to the body 1 of the trimming machine via the pivot 12, and the upper end is flush with the arc-shaped part of the trimming blade 5. The upper right side of the swing arm 6 is connected to the return spring 10 via a hook connection, and the bottom is connected to the tension spring 11 via a hook connection, thereby causing a swinging motion on the pivot 12.

[0037] Users primarily trim the edges of the plastic part by moving the trimming blade in contact with the edge of the part to be trimmed.

[0038] like Figure 1-4 As shown, the trimming blade 5 is arc-shaped, and the upper end of the swing rod 6 is flush with the arc of the trimming blade 5. The swing rod 6 rotates on the rotating shaft 12. The tension spring 11 and the return spring 10 are connected to the trimming machine body 1 and the swing rod 6 respectively through hook connection. The rolling ring 4 rotates at the front end of the trimming machine body 1 through the groove 9. The rubber rod 8 is connected to the rolling ring 4 through thread connection. The rubber rod 8 rotates with the rolling ring 4 and contacts the end of the swing rod 6 during rotation. The sleeve body 7 is connected to the trimming machine body 1 through the sleeve locking button 3. The trimming blade 5 is connected to the trimming machine body 1 through snap-fit ​​connection. A blade replacement button 2 for controlling the clamping degree of the trimming blade 5 is provided on the lower front side of the trimming machine body 1.

[0039] Preferably, when the user rotates the rolling ring 4, the rolling ring 4 drives the rubber rod 8 on its inner side to rotate together. During the rotation, the rubber rod 8 contacts the end of the swing rod 6, pushing the swing rod 6 to swing around the axis 12. Since the swing rod 6 is flush with the arc-shaped part of the trimming blade 5, the swing of the swing rod 6 will drive the trimming blade 5 to perform a reciprocating swing cutting action.

[0040] The tension spring 11 provides initial tension, keeping the swing rod 6 in a certain preloaded state to ensure stable contact with the rubber rod 8.

[0041] After the rubber rod 8 disengages from the swing rod 6, the return spring 10 helps the swing rod 6 quickly return to its original position, ready for the next cutting action.

[0042] Optionally, the trimming blade 5 is connected to the trimming machine body 1 via a snap-fit ​​connection, facilitating quick replacement and adjustment. The blade replacement button 2 is used to control the tightness of the trimming blade 5, ensuring that the blade will not loosen or fall off during use.

[0043] like Figure 1-4 As shown, in a specific embodiment, the trimming blade 5 is arc-shaped, and the upper end of the swing rod 6 is flush with the arc-shaped part of the trimming blade 5.

[0044] The rubber rod 8 is connected to the rolling ring 4 by a threaded connection and rotates together with the rolling ring 4.

[0045] The sleeve body 7 is connected to the trimming machine body 1 via the sleeve locking button 3 to ensure its stability.

[0046] The return spring 10 and the tension spring 11 are connected to the trimming machine body 1 and the swing rod 6 respectively by hook connection, to ensure the stability and flexibility of the swing rod 6.

[0047] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A plastic part processing trimming die, comprising a trimming machine body (1); A sleeve body (7) is arranged at the upper outer position of the trimming machine body (1), and a trimming blade (5) is arranged at the upper end of the sleeve body (7); characterized in that A rolling ring (4) is arranged at the upper outer position of the sleeve body (7), and rubber rods (8) are arranged at the left and right ends of the inner side of the rolling ring (4), and a slot (9) is arranged at the connecting position of the rolling ring (4) and the sleeve body (7); A rotating shaft (12) is arranged at the upper end of the trimming machine body (1), a swing rod (6) is arranged at the upper end of the rotating shaft (12), a tension spring (11) is arranged at the bottom of the swing rod (6) and the trimming machine body (1), and a return spring (10) is arranged at the upper right side of the swing rod (6) and the trimming machine body (1).

2. A trim die for plastic part processing as defined in claim 1, wherein: The trimming blade (5) is arranged in an arc shape, and the upper end of the swing rod (6) is flush with the arc of the trimming blade (5).

3. A trim die for plastic part processing as defined in claim 2, wherein: The swing rod (6) rotates on the rotating shaft (12), and the tension spring (11) and the return spring (10) are connected to the trimming machine body (1) and the swing rod (6) through hooking connection.

4. A trim die for plastic part processing as defined in claim 3, wherein: The rolling ring (4) rotates at the front end of the trimming machine body (1) through the slot (9), and the rubber rod (8) is connected to the rolling ring (4) through screw connection.

5. A trim die for plastic part processing as defined in claim 4, wherein: The rubber rod (8) rotates with the rolling ring (4), and the rubber rod (8) contacts the end of the swing rod (6) during rotation.

6. A trim die for plastic part processing as defined in claim 5, wherein: The sleeve body (7) is connected to the trimming machine body (1) through a sleeve locking button (3), the trimming blade (5) is connected to the trimming machine body (1) through clamping connection, and a blade replacement button (2) is arranged at the lower outer side of the front side of the trimming machine body (1) to control the clamping degree of the trimming blade (5).