A cutting device for PET protective film

Abstract

This utility model discloses a cutting device for PET protective film, including a cutting blade, a disassembly block, and a connecting rod. The upper end face of the cutting blade is provided with a snap-fit ​​groove. The disassembly block is provided with a sliding frame. A snap-fit ​​plate is slidably fitted onto the sliding frame through a first elastic mechanism. The disassembly block is provided with a connecting groove, and the outer wall of the disassembly block is provided with multiple positioning holes. This utility model achieves quick disassembly and assembly of the cutting blade and the disassembly block through the snap-fit ​​groove and L-shaped snap-fit ​​plate in conjunction with a first spring. The positioning block and positioning holes of different heights in conjunction with a second spring enable the overall length adjustment of the device and convenient separation of the connecting rod from the disassembly block. The angle adjustment of the rotating plate is achieved by using a regular hexagonal limiting frame and limiting groove in conjunction with a third spring. The whole device can efficiently replace the cutting blade, flexibly adapt to the gripping needs and postures of different operators, save maintenance time, improve operating comfort and flexibility, and ensure cutting accuracy.

Description

Technical Field

[0001] This utility model relates to the field of film material cutting equipment technology, and in particular to a cutting device for PET protective film. Background Technology

[0002] PET protective film is a polymer material widely used in electronics, optics, packaging, and other fields, possessing excellent scratch resistance, light transmittance, and protective properties. During production and use, PET protective film needs to be precisely cut according to actual requirements; therefore, the cutting device is a key piece of equipment in the PET protective film processing, and its performance directly affects cutting efficiency and the quality of the protective film.

[0003] Existing PET protective film cutting devices have many inconveniences: On the one hand, the cutting blade and the main body of the device are mostly fixedly connected or use a complex disassembly and assembly structure. When the cutting blade is worn and needs to be replaced, the operation is cumbersome and time-consuming, affecting the processing progress. On the other hand, the length of some devices cannot be flexibly adjusted, making it difficult to adapt to the gripping habits of different operators. Moreover, the cutting angle is fixed and cannot be adjusted according to the working scene and the operator's posture, which not only reduces the comfort of operation but may also affect the cutting accuracy due to improper force. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a cutting device for PET protective film.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A cutting device for PET protective film includes a cutting blade, a disassembly block, and a connecting rod. The upper end face of the cutting blade is provided with a snap-fit ​​groove. The disassembly block is provided with a sliding frame. A snap-fit ​​plate is slidably fitted on the sliding frame via a first elastic mechanism. The disassembly block is provided with a connecting groove. The outer wall of the disassembly block is provided with multiple positioning holes. Both outer walls of the connecting rod are provided with extrusion grooves. A positioning block is provided in the extrusion groove via a second elastic mechanism. The connecting rod is provided with a rotating groove. A rotating plate is rotatably mounted in the rotating groove via a rotating rod. A limiting frame is slidably inserted through the connecting rod via a third elastic mechanism. A limiting groove is provided on one outer wall of the rotating plate. A fixing frame is fixedly mounted on the rotating plate. A first connecting rod is provided on the fixing frame. A second connecting rod is provided at the end of the first connecting rod via a gripping rod.

[0007] Preferably, the first elastic mechanism includes a first spring sleeved on the outside of the sliding frame rod, with both ends of the first spring connected to the outer wall of the sliding frame head and the outer wall of the disassembly block, respectively.

[0008] Preferably, the second elastic mechanism includes a second spring disposed in the extrusion groove, with both ends of the second spring connected to the outer wall of the positioning block and the inner wall of the extrusion groove, respectively.

[0009] Preferably, the third elastic mechanism includes a third spring sleeved on the outside of the limiting frame rod, with both ends of the third spring connected to the outer wall of the limiting frame head and the outer wall of the connecting rod, respectively.

[0010] Preferably, the grip bar is cylindrical, and a protective pad is glued to the outer wall of the grip bar. The protective pad is made of rubber and has anti-slip texture on its surface.

[0011] Preferably, the snap-fit ​​groove is an inverted T-shaped groove, the snap-fit ​​plate is L-shaped, and the sliding frame rod is a rectangular column.

[0012] The beneficial effects of this utility model are:

[0013] 1. By using the interlocking slot and the L-shaped interlocking plate, and with the help of the elasticity of the first spring, the cutting blade and the disassembly block can be quickly disassembled and assembled. When the cutting blade is worn, it can be replaced simply by moving the interlocking plate, which greatly saves maintenance time and improves work efficiency.

[0014] 2. By utilizing the positioning block and positioning holes of different heights, under the action of the second spring, the overall length of the device can be flexibly adjusted to meet the gripping needs of different operators. It can also easily separate the connecting rod from the disassembly block, facilitating individual maintenance or replacement of components.

[0015] 3. Through the cooperation of the regular hexagonal limiting frame and the limiting groove, the rotating plate can be adjusted in angle under the action of the third spring to meet the needs of different gripping and cutting postures, improve the comfort and flexibility of operation, and help ensure cutting accuracy.

[0016] 4. The grip bar features a cylindrical design and is equipped with a rubber protective pad with anti-slip texture, which enhances the stability and comfort of the grip and further improves the operating experience. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a cutting device for PET protective film proposed in this utility model;

[0018] Figure 2 for Figure 1 Enlarged schematic diagram of the structure at point A;

[0019] Figure 3 This is a schematic diagram of the vertical cross-section of the cutting blade.

[0020] In the diagram: 1. Cutting blade, 2. Connecting slot, 3. Disassembly block, 4. Connecting plate, 5. Sliding frame, 6. First spring, 7. Connecting slot, 8. Positioning hole, 9. First connecting rod, 10. Grip rod, 11. Second connecting rod, 12. Connecting rod, 13. Extrusion slot, 14. Positioning block, 15. Second spring, 16. Rotating slot, 17. Rotating plate, 18. Limiting frame, 19. Third spring, 20. Fixing frame. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figure 1-3 A cutting device for PET protective film includes a cutting blade 1, a disassembly block 3, and a connecting rod 12. The upper surface of the cutting blade 1 has a snap-fit ​​groove 2. The disassembly block 3 has a sliding frame 5, and a snap-fit ​​plate 4 is slidably mounted on the sliding frame 5 via a first elastic mechanism. The disassembly block 3 has a connecting groove 7, and its outer wall has multiple positioning holes 8. Both sides of the connecting rod 12 have extrusion grooves 13, and positioning blocks 14 are mounted within the extrusion grooves 13 via a second elastic mechanism. The connecting rod 12 has a rotating groove 16, and a rotating plate 17 is rotatably mounted within the rotating groove 16 via a rotating rod. A limiting frame 18 is slidably inserted through the connecting rod 12 via a third elastic mechanism. One side of the rotating plate 17 has a limiting groove, and the rod portion of the limiting frame 18 is a regular hexagonal prism, while the limiting groove is a regular hexagonal recess. This hexagonal design allows the rotating plate 17 to rotate relative to the connecting rod 12 by 30 degrees in a single rotation.

[0023] A fixed frame 20 is fixedly provided on the rotating plate 17. A first connecting rod 9 is provided on the fixed frame 20. A second connecting rod 11 is provided at the end of the first connecting rod 9 through the gripping rod 10.

[0024] The first elastic mechanism includes a first spring 6 sleeved on the outside of the rod of the sliding frame 5. The two ends of the first spring 6 are respectively connected to the outer wall of the head of the sliding frame 5 and the outer wall of the disassembly block 3. The first spring 6 can squeeze the snap plate 4. When it is in the snap groove 2, it squeezes its horizontal part into the horizontal part of the snap groove 2. At this time, the snap plate 4 cannot be separated from the cutting blade 1.

[0025] The second elastic mechanism includes a second spring 15 disposed in the extrusion groove 13. The two ends of the second spring 15 are respectively connected to the outer wall of the positioning block 14 and the inner wall of the extrusion groove 13. The elastic potential energy provided by the second spring 15 can realize the extrusion operation of the positioning block 14, which can be extruded into one of the positioning holes 8. At this time, the connecting rod 12 is stably connected to the disassembly block 3, and the positioning block 14 can be changed to be in the positioning holes 8 at different heights, thereby changing the length of the disassembly block 3 and the connecting rod 12.

[0026] The third elastic mechanism includes a third spring 19 sleeved on the outside of the rod of the limiting frame 18. The two ends of the third spring 19 are connected to the outer wall of the head of the limiting frame 18 and the outer wall of the connecting rod 12, respectively. The third spring 19 can realize the dragging of the limiting frame 18, which can ensure that its rod is stably placed in the limiting groove on the outer wall of the rotating plate 17.

[0027] The grip bar 10 is a cylindrical shape. A protective pad is glued to the outer wall of the grip bar 10. The protective pad is made of rubber and has anti-slip texture on the surface. The cylindrical design makes it easy to grip the grip bar 10, the rubber pad protects the gripping hand, and the anti-slip texture provides a good anti-slip effect.

[0028] The snap-fit ​​groove 2 is an inverted T-shaped groove, and the snap-fit ​​plate 4 is designed in an L-shape. The above shape design facilitates the snap-fit ​​connection and separation of the two.

[0029] The sliding frame 5 rod is a rectangular column. This design prevents the locking plate 4 from looping around the sliding frame 5 rod and provides a certain degree of limiting effect.

[0030] All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art.

[0031] When using this utility model, one hand can hold the gripping rod 10, and the other hand can hold the annular part of the second connecting rod 11. The PET protective film to be cut is placed on the cutting base (a mature component in the prior art, mainly used to place the PET protective film, and it is also equipped with a component for fixing the PET protective film in the prior art). Then, the cutting blade 1 can be used to cut the PET protective film to be cut.

[0032] In this technical solution, the snap-fit ​​plate 4 can be moved relative to the sliding frame 5 to compress the first spring 6, and then the horizontal part of the snap-fit ​​plate 4 will disengage from the horizontal part of the snap-fit ​​groove 2, thereby completing the disassembly operation of the cutting blade 1 relative to other components.

[0033] In this technical solution, the overall length of the device can be varied by changing the positioning hole 8 corresponding to the positioning block 14, making it suitable for various operators to perform gripping and cutting operations within a certain range. Furthermore, once the positioning block 14 is disengaged from the positioning hole 8, the connecting rod 12 can be easily disassembled relative to the disassembly block 3.

[0034] In this technical solution, dragging the limiting frame 18 can disengage its end from the limiting groove on the outer wall of the rotating plate 17, and then the connecting rod 12 can rotate. The single rotation angle is 30 degrees. After the rotation is completed, the limiting frame 18 is released so that its rod re-enters the limiting groove. At this time, the connecting rod 12 and other components form a certain angle relative to other components, which facilitates different gripping postures for cutting operations.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A cutting device for PET protective film, comprising a cutting blade (1), a disassembly block (3), and a connecting rod (12), characterized in that, The upper end face of the cutting blade (1) is provided with a snap-fit ​​groove (2), the disassembly block (3) is provided with a sliding frame (5), the sliding frame (5) is slidably fitted with a snap-fit ​​plate (4) through a first elastic mechanism, the disassembly block (3) is provided with a connecting groove (7), the outer wall of the disassembly block (3) is provided with multiple positioning holes (8), the outer walls of both sides of the connecting rod (12) are provided with extrusion grooves (13), the extrusion grooves (13) are provided with positioning blocks (14) through a second elastic mechanism, the connecting rod ( 12) is provided with a rotating groove (16), and a rotating plate (17) is provided in the rotating groove (16) through a rotating rod. A limiting frame (18) is slidably passed through the connecting rod (12) through a third elastic mechanism. A limiting groove is provided on one side of the outer wall of the rotating plate (17). A fixing frame (20) is fixedly provided on the rotating plate (17). A first connecting rod (9) is provided on the fixing frame (20). A second connecting rod (11) is provided at the end of the first connecting rod (9) through a gripping rod (10).

2. The cutting device for PET protective film according to claim 1, characterized in that, The first elastic mechanism includes a first spring (6) sleeved on the outside of the rod of the sliding frame (5), and the two ends of the first spring (6) are respectively connected to the outer wall of the head of the sliding frame (5) and the outer wall of the disassembly block (3).

3. A cutting device for PET protective film according to claim 2, characterized in that, The second elastic mechanism includes a second spring (15) disposed in the extrusion groove (13), and the two ends of the second spring (15) are respectively connected to the outer wall of the positioning block (14) and the inner wall of the extrusion groove (13).

4. A cutting device for PET protective film according to claim 3, characterized in that, The third elastic mechanism includes a third spring (19) sleeved on the outside of the rod of the limiting frame (18), and the two ends of the third spring (19) are respectively connected to the outer wall of the head of the limiting frame (18) and the outer wall of the connecting rod (12).

5. A cutting device for PET protective film according to claim 4, characterized in that, The gripping rod (10) is cylindrical in shape, and a protective pad is glued to the outer wall of the gripping rod (10). The protective pad is made of rubber and has anti-slip texture on its surface.

6. A cutting device for PET protective film according to claim 5, characterized in that, The snap-fit ​​groove (2) is an inverted T-shaped groove, the snap-fit ​​plate (4) is L-shaped, and the sliding frame (5) has a rectangular column shape.

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