A trimming device for processing plastic packaging bags

By using a dual-motor drive system and reciprocating component design, the problems of cutting offset and rough edges in the processing of plastic packaging bags are solved, achieving efficient and precise automated edge cutting to meet the processing needs of different materials.

CN224276473UActive Publication Date: 2026-05-26YANTAI KINKI PLASTIC PACKAGING PROD CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
YANTAI KINKI PLASTIC PACKAGING PROD CO LTD
Filing Date
2025-07-15
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing plastic packaging bag processing methods suffer from problems such as cutting deviation and rough edges, and rely on manual operation or simple mechanical structures, resulting in low efficiency.

Method used

It adopts a dual-motor drive system, with the first motor responsible for cutting power and the second motor responsible for material feeding. Stability and flexible adaptability are achieved through precise parameter adjustment. Combined with the reciprocating parts and square cutting position design, cutting accuracy and continuity are ensured.

Benefits of technology

It improves cutting quality and efficiency, simplifies equipment maintenance processes, avoids cutting misalignment and material wrinkles, and adapts to the processing needs of packaging bags of different thicknesses and materials.

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Abstract

This utility model discloses a trimming device for processing plastic packaging bags, comprising a first base. First, a second motor is activated, and a roller carries the plastic packaging bag towards a square cutting position. Then, the first motor is activated, and a rotating wheel drives a reciprocating component. The left end of the reciprocating component is fixedly connected to a reciprocating bracket, allowing the cutter to perform reciprocating cutting at the square cutting position. The cutter then falls below the square cutting position. Through this structure, the trimming device, with its "dual-motor drive + composite transmission mechanism + integrated structure" design, significantly outperforms ordinary trimming devices in terms of automation, cutting accuracy, production efficiency, and stability. The rocker arm can be manually operated to move the wheel. For areas with difficult cutting, the operator can flexibly cut manually. Manual intervention allows for precise control of cutting force and direction, ensuring cutting quality and avoiding material damage or inaccurate cutting due to improper mechanical cutting. It can also adapt to packaging bags of different widths by changing core components.
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Description

Technical Field

[0001] This utility model relates to the field of edge trimming technology for processing plastic packaging bags, and in particular to an edge trimming device for processing plastic packaging bags. Background Technology

[0002] Packaging bags are bags used to package various products, making it convenient to transport and store goods during production and distribution. They are widely used in daily life and industrial production. In the current technology, the motion precision of existing packaging bags during production depends on manual operation or simple mechanical structures, which can easily lead to problems such as cutting deviation and rough edges.

[0003] The wheel rotates eccentrically, and this rotation is precisely transmitted through the shaft, effectively driving the movement of the reciprocating parts. This design makes the movement trajectory of the cutter more regular and stable during operation. At the same time, the system is also cleverly combined with the precise positioning function of the square cutting position. This dual guarantee mechanism ensures that the cut edges are not only smooth but also more uniform, greatly improving the cutting quality and efficiency. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a trimming device for processing plastic packaging bags. First, the second motor is turned on, and the rollers drive the plastic packaging bags towards the square cutting position. Then, the first motor is started, and the rotating disc drives the shaft to drive the reciprocating component. Since the left end of the reciprocating component is fixedly connected to the reciprocating support, the cutter cuts back and forth at the square cutting position. The cutter falls below the square cutting position, and the finished product is continuously output by the rollers, achieving continuous automated trimming.

[0005] This utility model also provides a cutting device for processing plastic packaging bags, comprising a first base, a second base placed on the upper end of the first base, a square cutting edge cut out inside the second base, a cutting tool placed on the upper end of the second base, a wheel stacked on the upper end of the second base, the wheel being fixed inside a support frame, the lower end of the support frame being fixed to the second base, a connecting rod fixedly connected to the left end of the support frame, a rocker arm fixedly connected to the left end of the connecting rod, a first motor placed on the right end of the support frame, a roller placed on the upper end of the first base, and a second motor placed on the upper end of the first base.

[0006] According to the present invention, a cutting device for processing plastic packaging bags is provided, wherein a support column is fixedly connected to the lower end of the second base, and the lower end of the support column is fixedly connected to the first base.

[0007] According to the present invention, a cutting device for processing plastic packaging bags is provided, wherein the cutting tool is fixedly connected to a reciprocating bracket, and the reciprocating bracket is fixedly connected to a reciprocating component.

[0008] According to the present invention, a trimming device for processing plastic packaging bags is provided, wherein a rotating shaft is fixedly connected to the left end of the wheel, and the rotating shaft is placed inside the reciprocating component.

[0009] According to the present invention, a trimming device for processing plastic packaging bags is provided, wherein a first motor is placed at the right end of the wheel, a first output rod is fixedly connected to the output end of the first motor, and the left end of the first output rod is fixedly connected to the wheel.

[0010] According to the present invention, a cutting device for processing plastic packaging bags is provided, wherein a first connecting frame is fixedly connected to the lower end of the first motor, and the first connecting frame is fixedly connected to the upper end of the second base.

[0011] According to the present invention, a cutting device for processing plastic packaging bags is provided, wherein a second output rod is placed inside the roller, and the left and right ends of the second output rod are fixedly connected to a fixed frame, and the lower end of the fixed frame is fixedly connected to a first base.

[0012] According to the present invention, a cutting device for processing plastic packaging bags is provided, wherein a second output rod is fixedly connected to the output end of the second motor, one end of the second motor is fixedly connected to the second connecting frame, and one end of the second connecting frame is fixedly connected to the second base.

[0013] Beneficial effects:

[0014] 1. The joystick's setting function greatly facilitates equipment debugging, tool changing, or troubleshooting. It allows operators to manually drive the cutting mechanism to make necessary adjustments and operations in these situations. This design cleverly avoids the extra time wasted due to power outages and restarts, thereby effectively shortening equipment downtime and improving overall work efficiency and production continuity. This flexible operation method not only simplifies the maintenance process.

[0015] 2. The first motor is dedicated to providing the power required for cutting, ensuring the stability and accuracy of the cutting process, while the second motor focuses on the material conveying function, ensuring that the material can move smoothly during processing. Through precise parameter adjustment, these two motors can achieve perfect speed matching, thereby effectively avoiding cutting misalignment or material wrinkling caused by speed mismatch. This design allows the system to flexibly adapt to the processing needs of packaging bags of different thicknesses and materials, ensuring that ideal processing results can be achieved under various conditions. Attached Figure Description

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

[0017] Figure 1This is a perspective view of a cutting device for processing plastic packaging bags according to the present invention;

[0018] Figure 2 This is a top view of a cutting device for processing plastic packaging bags according to the present invention;

[0019] Figure 3 In this utility model Figure 1 Enlarged view of point A in the middle;

[0020] Figure 4 This is a right view of a cutting device for processing plastic packaging bags according to the present invention;

[0021] Legend:

[0022] 1. First base; 2. Second base; 3. Support frame; 4. Wheel; 5. Reciprocating component; 6. Rotating shaft; 7. Reciprocating bracket; 8. Cutting tool; 9. Cutting position; 10. Connecting rod; 11. Rocker arm; 12. First motor; 13. First output rod; 14. First connecting frame; 15. Support column; 16. Roller; 17. Second output rod; 18. Second motor; 19. Second connecting frame; 20. Fixing frame. Detailed Implementation

[0023] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0024] Reference Figure 1-4 This utility model discloses a trimming device for processing plastic packaging bags, comprising a first base 1, a second base 2 placed on the upper end of the first base 1, a square cutting edge 9 cut out inside the second base 2, a cutting tool 8 placed on the upper end of the second base 2, a wheel 4 stacked on the upper end of the second base 2, the wheel 4 being fixed inside a support frame 3, the lower end of the support frame 3 being fixed to the second base 2, a connecting rod 10 fixedly connected to the left end of the support frame 3, a rocker arm 11 fixedly connected to the left end of the connecting rod 10, a first motor 12 placed on the right end of the support frame 3, a roller 16 placed on the upper end of the first base 1, and a second motor 18 placed on the upper end of the first base 1.

[0025] Specifically, the various components included at the upper part of the first base 1.

[0026] The lower end of the second base 2 is fixedly connected to a support column 15, and the lower end of the support column 15 is fixedly connected to the first base 1.

[0027] Specifically, the second base 2 and the first base 1 are fixedly connected by a support column 15.

[0028] The cutting tool 8 is fixedly connected to the reciprocating bracket 7, and the reciprocating bracket 7 is fixedly connected to the reciprocating component 5.

[0029] Specifically, the cutting tool 8 is driven by the reciprocating support 7, and the reciprocating support 7 is driven by the reciprocating component 5.

[0030] The left end of the wheel 4 is fixedly connected to a rotating shaft 6, which is placed inside the reciprocating component 5.

[0031] Specifically, the wheel 4 drives the reciprocating component 5 to move up and down through the rotating shaft 6.

[0032] A first motor 12 is placed at the right end of the wheel 4. A first output rod 13 is fixedly connected to the output end of the first motor 12. The left end of the first output rod 13 is fixedly connected to the wheel 4.

[0033] Specifically, the wheel 4 is driven by the first motor 12.

[0034] The lower end of the first motor 12 is fixedly connected to a first connecting frame 14, which is fixedly connected to the upper end of the second base 2.

[0035] Specifically, the first motor 12 is fixed to the second base 2 via the first connecting bracket 14.

[0036] The roller 16 contains a second output rod 17, the left and right ends of which are fixedly connected to the fixing frame 20, and the lower end of the fixing frame 20 is fixedly connected to the first base 1.

[0037] Specifically, the roller 16 is fixed to the mounting bracket 20 via the second output rod 17.

[0038] The output end of the second motor 18 is fixedly connected to the second output rod 17, one end of the second motor 18 is fixedly connected to the second connecting frame 19, and one end of the second connecting frame 19 is fixedly connected to the second base 2.

[0039] Specifically, the second motor 18 is fixed to the second base 2 via the second connecting bracket 19.

[0040] Working principle: First, the second motor 18 is started, and the roller 16 drives the plastic packaging bag to the square cutting position 9. Then, the first motor 12 is started, and the wheel 4 rotates to drive the rotating shaft 6 to drive the reciprocating part 5. The left end of the reciprocating part 5 is fixedly connected to the reciprocating bracket 7, so that the cutter 8 performs reciprocating cutting at the square cutting position 9. The cutter 8 falls below the square cutting position 9, and the finished part continues to be output by the roller 16, realizing continuous automated edge trimming.

[0041] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A trimming device for processing plastic packaging bags, comprising, characterized in that... First base (1): A second base (2) is placed on the upper end of the first base (1). A square cut (9) is cut out inside the second base (2). A knife (8) is placed on the upper end of the second base (2). A wheel (4) is stacked on the upper end of the second base (2). The wheel (4) is fixed inside the support frame (3). The lower end of the support frame (3) is fixed to the second base (2). A connecting rod (10) is fixedly connected to the left end of the support frame (3). A rocker arm (11) is fixedly connected to the left end of the connecting rod (10). A first motor (12) is placed on the right end of the support frame (3). A roller (16) is placed on the upper end of the first base (1). A second motor (18) is placed on the upper end of the first base (1).

2. The edge-trimming device for processing plastic packaging bags according to claim 1, characterized in that, The lower end of the second base (2) is fixedly connected to a support column (15), and the lower end of the support column (15) is fixedly connected to the first base (1).

3. The edge-trimming device for processing plastic packaging bags according to claim 1, characterized in that, The cutting tool (8) is fixedly connected to the reciprocating bracket (7), and the reciprocating bracket (7) is fixedly connected to the reciprocating component (5).

4. The edge-trimming device for processing plastic packaging bags according to claim 1, characterized in that, The left end of the wheel (4) is fixedly connected to a rotating shaft (6), which is placed inside the reciprocating component (5).

5. The edge-trimming device for processing plastic packaging bags according to claim 1, characterized in that, A first motor (12) is placed on the right end of the wheel (4), and a first output rod (13) is fixedly connected to the output end of the first motor (12). The left end of the first output rod (13) is fixedly connected to the wheel (4).

6. The edge-trimming device for processing plastic packaging bags according to claim 1, characterized in that, The lower end of the first motor (12) is fixedly connected to a first connecting frame (14), and the first connecting frame (14) is fixedly connected to the upper end of the second base (2).

7. The edge-trimming device for processing plastic packaging bags according to claim 1, characterized in that, The roller (16) contains a second output rod (17), the left and right ends of which are fixedly connected to the fixing frame (20), and the lower end of the fixing frame (20) is fixedly connected to the first base (1).

8. The edge-trimming device for processing plastic packaging bags according to claim 1, characterized in that, The output end of the second motor (18) is fixedly connected to the second output rod (17), one end of the second motor (18) is fixedly connected to the second connecting frame (19), and one end of the second connecting frame (19) is fixedly connected to the second base (2).