A cutting device for plastic packaging film

Abstract

The application provides a cutting device for plastic packaging film, and belongs to the technical field of cutting devices. The cutting device comprises a workbench and a dust cover. The top of the workbench is provided with the dust cover. The inner top end of the dust cover is provided with an electric push rod. The bottom of the electric push rod is connected with a connecting seat. The bottom of the connecting seat is provided with a cutter. In the above scheme, the frame, the shaping plate, the wedge block and the extrusion piece are arranged. The plastic packaging film is pressed and fixed by the gravity of the protective shell. Under the organic cooperation of the extrusion piece, the wedge block and the spring, the two shaping plates move simultaneously. The lateral forces in two opposite directions and with the same size can interact on the plastic packaging film, so that the deformation and deviation of the plastic packaging film are avoided, and a good flattening and shaping effect is achieved.

Description

Technical Field

[0001] This application relates to the field of cutting device technology, and in particular to a cutting device for plastic packaging film. Background Technology

[0002] Plastic packaging films provide strong protection for products with extremely low cost and efficient packaging processes, significantly reducing the economic losses caused by product deterioration and damage. Existing plastic packaging films can be classified by raw materials such as polyethylene film, polypropylene film, polyvinyl chloride film, and polyester film; and by forming methods such as blown film, cast film, and calendered film. Common plastic films are packaged by winding into rolls during the production process and are cut into pieces as needed during use.

[0003] Existing plastic packaging film cutting devices, such as the one described in CN221475295U, are equipped with pressure bars for flattening the plastic packaging film. However, they are unidirectional in movement, and the lateral force applied to the plastic film can easily cause deformation and displacement of the plastic film, resulting in errors in the cutting position.

[0004] To address this, a novel cutting device for plastic packaging films is proposed. Utility Model Content

[0005] In view of this, the purpose of this application is to provide a cutting device for plastic packaging film to accurately flatten the plastic film.

[0006] To solve the above-mentioned technical problems, this application provides the following technical solution:

[0007] A cutting device for plastic packaging film includes a workbench and a dust cover. The top of the workbench is provided with a dust cover, and the top of the inside of the dust cover is provided with an electric push rod. The bottom of the electric push rod is connected to a connecting seat, and the bottom of the connecting seat is provided with a cutter.

[0008] The cutter is provided with a protective assembly on its outer side. The protective assembly includes: a protective shell, a frame, a shaping plate, a slide groove, a wedge, and a spring. The protective shell is snapped onto the outer side of the connecting seat. The two frames are respectively disposed on both sides of the protective shell. The shaping plate is slidably disposed in the strip hole at the top of the frame. The slide groove is fixed at the top middle position of the frame. The wedge is slidably disposed inside the slide groove. The shaping plate and the wedge are fixedly connected. The spring is fixed between the wedge and the side wall of the slide groove.

[0009] The side of the connecting seat is also provided with an extrusion member, which is provided through the strip hole on the side of the protective shell and is located directly above the wedge.

[0010] Preferably, the dust cover has a "door" shaped structure, with both sides of the dust cover being open, and the side wall of the dust cover having a strip-shaped hole, with the connecting seat passing through the strip-shaped hole on the side of the dust cover.

[0011] Preferably, a groove is provided at the middle of the bottom of the protective shell, and the protective shell is snapped onto the top of the connecting seat through the groove.

[0012] Preferably, the length of the protective shell is the same as the length of the cutter, and a strip-shaped hole is provided on the top of the protective shell, through which the electric push rod is disposed.

[0013] Preferably, the extruder has a cylindrical structure, and the length of the extruder is the same as the length of the wedge.

[0014] Preferably, the top of the wedge includes an inclined surface, and the two wedges are fitted together.

[0015] Preferably, the end of the groove facing the protective shell is open.

[0016] Preferably, the lower surface of the shaping plate protrudes 1 cm from the lower surface of the frame, and the bottom of the shaping plate is provided with parallel and spaced rotating rollers, the bottom surface of which protrudes from the shaping plate.

[0017] Preferably, a guide is provided on the side of the wedge block, the guide is provided through the side wall of the slide groove, and the spring is provided on the outside of the guide.

[0018] Preferably, the workbench has a strip-shaped hole in the middle position that matches the cutter.

[0019] Compared with the prior art, this application has at least the following advantages:

[0020] In the above solution, by setting up a frame, shaping plates, wedges and extruders, the plastic packaging film is pressed and fixed by the weight of the protective shell itself. With the organic cooperation of the extruders, wedges and springs, the two shaping plates move simultaneously. The two lateral forces with opposite directions and the same magnitude can interact with the plastic packaging film, thereby avoiding deformation and displacement of the plastic packaging film, and achieving a good flattening and shaping effect.

[0021] In the above solution, by setting up a protective shell and a connecting seat, the protective shell can shield the connecting seat and the cutter, thereby reducing the direct exposure of the cutter to the outside world and improving safety. Attached Figure Description

[0022] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present disclosure and, together with the specification, further serve to explain the principles of the present disclosure and enable those skilled in the art to implement and use the present disclosure.

[0023] Figure 1 This is a schematic diagram of the overall structure in this application;

[0024] Figure 2 This is a schematic diagram of the protective shell structure in this application;

[0025] Figure 3 This is a schematic diagram of the connector structure in this application;

[0026] Figure 4 This is a schematic diagram of the wedge block structure in this application;

[0027] Figure 5 This is a schematic diagram of the chute structure in this application;

[0028] Figure 6 This is a schematic diagram of the cross-sectional structure of the shaping plate in this application;

[0029] [Figure Labels]

[0030] Workbench 1, dust cover 2, electric push rod 201, connecting seat 202, extrusion part 2021, protective shell 4, frame 401, shaping plate 402, rotating roller 4021, slide 403, wedge block 404, guide part 4041, spring 405. Detailed Implementation

[0031] like Figure 1 , Figure 2 , Figure 3 and Figure 4 The embodiment of this application provides a cutting device for plastic packaging film, which includes a workbench 1 and a dust cover 2. The top of the workbench 1 is provided with a dust cover 2, and the top of the inside of the dust cover 2 is provided with an electric push rod 201. The bottom of the electric push rod 201 is connected to a connecting seat 202, and the bottom of the connecting seat 202 is provided with a cutter 3.

[0032] The cutter 3 is provided with a protective assembly on its outer side. The protective assembly includes: a protective shell 4, a frame 401, a shaping plate 402, a slide 403, a wedge 404, and a spring 405. The protective shell 4 is snapped onto the outer side of the connecting seat 202. Two frames 401 are respectively provided on both sides of the protective shell 4. The shaping plate 402 is slidably provided in the strip hole at the top of the frame 401. The slide 403 is fixed at the middle position at the top of the frame 401. The wedge 404 is slidably provided inside the slide 403. The shaping plate 402 and the wedge 404 are fixedly connected. The spring 405 is fixed between the wedge 404 and the side wall of the slide 403.

[0033] The side of the connecting seat 202 is also provided with an extrusion member 2021, which penetrates the strip hole on the side of the protective shell 4 and is located directly above the wedge block 404.

[0034] After pulling out one end of the plastic packaging film and passing it through the dust cover 2, the length to be cut is determined. The cutter 3 is then aligned with the position to be cut, and the connecting seat 202 is moved downward by the electric push rod 201. The protective shell 4 first contacts the plastic packaging film, and at the same time, the protective shell 4 is supported by the workbench 1. The plastic packaging film is pressed and fixed by the weight of the protective shell 4 itself.

[0035] As the connecting seat 202 continues to move downward, the extruder 2021 extrudes the wedge block 404, causing the spring 405 to contract. The wedge block 404 drives the shaping plate 402 to move from the middle position of the plastic packaging film to the edge position. The two shaping plates 402 move at the same time, and the two lateral forces in opposite directions can interact with each other, thereby avoiding deformation and displacement of the plastic packaging film, and achieving a good flattening and shaping effect.

[0036] In this embodiment, as Figures 2-6 As shown, the dust cover 2 has a "door" shaped structure, with both sides of the dust cover 2 being open. The side wall of the dust cover 2 has a strip-shaped hole, and the connecting seat 202 is installed through the strip-shaped hole on the side of the dust cover 2.

[0037] The dust cover 2 is used to prevent dust from settling, so as to keep the top middle area of ​​the workbench 1 clean and reduce the dust accumulation on the plastic packaging film. The dust cover 2 has a guiding effect on the connector 202, which can only move in the vertical direction, thereby maintaining good cutting accuracy.

[0038] A groove is provided in the middle of the bottom of the protective shell 4, and the protective shell 4 is snapped into the top of the connecting seat 202 through the groove;

[0039] The protective shell 4 can shield the connector 202 and the cutter 3, thereby reducing the direct exposure of the cutter 3 to the outside world and improving safety.

[0040] The length of the protective shell 4 is the same as the length of the cutter 3. A strip hole is provided on the top of the protective shell 4, and the electric push rod 201 passes through the strip hole of the protective shell 4.

[0041] The protective shell 4 connecting seat 202 can slide relative to it in the vertical direction. So after the protective shell 4 is supported on the workbench 1, the connecting seat 202 can still drive the cutter 3 to move downward to complete the cutting work. The connecting seat 202 also has a guiding and limiting effect on the protective shell 4. After the cutter 3 is cut, it is separated from the plastic packaging film. The protective shell 4 is still pressed on the plastic packaging film to prevent the plastic packaging film from adhering to the cutter 3. Therefore, the operator does not need to clean the cutter 3, which is safer.

[0042] Once the cutter 3 and the connecting seat 202 have moved to the top of the inner part of the protective shell 4, the cutter 3 is now shielded by the protective shell 4, reducing the risk of exposure. Then the protective shell 4 moves upward with the connecting seat 202, achieving the effect of releasing the plastic packaging film. At this point, the cut plastic packaging film can be safely removed from the workbench 1.

[0043] The extrusion part 2021 has a cylindrical structure, and the length of the extrusion part 2021 is the same as the length of the wedge block 404;

[0044] The extruder 2021 has a regular cylindrical structure, so its extrusion force on the two wedges 404 is consistent, thus making the lateral force exerted by the two shaping plates 402 on the plastic packaging film consistent. The two lateral forces are the same in magnitude but opposite in direction, which overcomes the problem of plastic packaging film deviation.

[0045] The top of the wedge 404 includes an inclined surface, and the two wedges 404 are fitted together.

[0046] The two wedges 404 are fitted together and symmetrically arranged, ensuring that the two lateral forces are generated at the same time, making them easier to control.

[0047] The end of the slide 403 facing the protective shell 4 is open;

[0048] The open end of the chute 403 is adapted to the stroke required for the extruder 2021 to move downward, thereby ensuring that the forming plate 402 has sufficient stroke.

[0049] The lower surface of the shaping plate 402 protrudes 1 cm from the lower surface of the frame 401. The bottom of the shaping plate 402 is provided with parallel and spaced rotating rollers 4021, and the bottom surface of the rotating rollers 4021 protrudes from the shaping plate 402.

[0050] When the shaping plate 402 moves horizontally, the bottom roller 4021 presses over the surface of the plastic packaging film, pressing and fixing the plastic packaging film while keeping its surface flat and reducing wrinkles and bubbles.

[0051] A guide 4041 is provided on the side of the wedge block 404. The guide 4041 passes through the side wall of the slide groove 403. The spring 405 is provided on the outside of the guide 4041.

[0052] The guide 4041 further improves the accuracy of the wedge 404 movement, and the spring 405 is used for accurate reset while absorbing impact.

[0053] A strip-shaped hole matching the cutter 3 is provided in the middle of the workbench 1;

[0054] The downward movement of the cutter 3 allows it to reach into the slot at the top of the workbench 1, thus ensuring that the plastic packaging film is cut.

[0055] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A cutting device for plastic packaging film, comprising a workbench (1) and a dust cover (2), characterized in that, The top of the workbench (1) is provided with a dust cover (2), and the top of the inside of the dust cover (2) is provided with an electric push rod (201). The bottom of the electric push rod (201) is connected to a connecting seat (202), and the bottom of the connecting seat (202) is provided with a cutter (3). The cutter (3) is provided with a protective component on its outer side. The protective component includes: a protective shell (4), a frame (401), a shaping plate (402), a slide groove (403), a wedge (404), and a spring (405). The protective shell (4) is snapped onto the outer side of the connecting seat (202). The two frames (401) are respectively disposed on both sides of the protective shell (4). The shaping plate (402) is slidably disposed in the strip hole at the top of the frame (401). The slide groove (403) is fixed at the middle position at the top of the frame (401). The wedge (404) is slidably disposed inside the slide groove (403). The shaping plate (402) and the wedge (404) are fixedly connected. The spring (405) is fixed between the wedge (404) and the side wall of the slide groove (403). The side of the connecting seat (202) is also provided with an extrusion member (2021), which is provided through the strip hole on the side of the protective shell (4) and is located directly above the wedge block (404).

2. The cutting device for plastic packaging film according to claim 1, characterized in that: The dust cover (2) has a "door" shaped structure. Both sides of the dust cover (2) are open. The side wall of the dust cover (2) has a strip hole. The connecting seat (202) passes through the strip hole on the side of the dust cover (2).

3. The cutting device for plastic packaging film according to claim 1, characterized in that: The protective shell (4) has a groove in the middle of its bottom, and the protective shell (4) is snapped into the top of the connecting seat (202) through the groove.

4. The cutting device for plastic packaging film according to claim 1, characterized in that: The length of the protective shell (4) is the same as the length of the cutter (3). A strip hole is provided on the top of the protective shell (4), and the electric push rod (201) is provided through the strip hole of the protective shell (4).

5. The cutting device for plastic packaging film according to claim 1, characterized in that: The extrusion piece (2021) has a cylindrical structure, and the length of the extrusion piece (2021) is the same as the length of the wedge (404).

6. The cutting device for plastic packaging film according to claim 5, characterized in that: The top of the wedge (404) includes an inclined surface, and the two wedges (404) are fitted together.

7. The cutting device for plastic packaging film according to claim 1, characterized in that: The end of the groove (403) facing the protective shell (4) is open.

8. The cutting device for plastic packaging film according to claim 1, characterized in that: The lower surface of the shaping plate (402) protrudes 1 cm from the lower surface of the frame (401). The bottom of the shaping plate (402) is provided with parallel and spaced rotating rollers (4021), and the bottom surface of the rotating rollers (4021) protrudes from the shaping plate (402).

9. The cutting device for plastic packaging film according to claim 1, characterized in that: The wedge (404) is provided with a guide (4041) on its side, the guide (4041) is provided through the side wall of the slide (403), and the spring (405) is provided on the outside of the guide (4041).

10. The cutting device for plastic packaging film according to claim 1, characterized in that: The workbench (1) has a strip hole in the middle that matches the cutter (3).

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