Film cutting device

Abstract

The utility model relates to manufacturing equipment of a battery box body, in particular to a film layer cutting device. The film roller is rotatably arranged on the machine frame and used for supporting a film roll, the transition roller is fixedly arranged on the machine frame and is parallel to the film roller, the cutting knife is connected to the machine frame in a linear moving mode, the film roller and the machine frame are detachably arranged, and the film roller, the transition roller and the cutting knife are sequentially arranged from top to bottom. The utility model provides a film cutting device which can improve the cutting efficiency of a film.

Description

Technical Field

[0001] The present application relates to a battery case manufacturing device, and in particular to a film cutting device. Background Art

[0002] A related art lightweight power battery lower case uses a continuous glass fiber and flame-retardant epoxy resin matrix, with a foamed rigid PET filler layered within the composite material. After forming, the case requires a protective blue film wrap to prevent scratches during stacking or transportation. In this technique, the protective film is typically cut with scissors after being rolled out, a process that is inefficient and cumbersome. Summary of the Invention

[0003] In view of this, the present application provides a film cutting device that can improve the cutting efficiency of the film.

[0004] In order to achieve the above objectives, this application is implemented through the following technical solutions:

[0005] A film layer cutting device, characterized in that it includes a frame, a film roller rotatably arranged on the frame for supporting a film roll, a transition roller fixedly arranged on the frame and parallel to the film roller, and a cutting knife connected to the frame in a linearly movable manner, the film roller and the frame are detachable, and the film roller, transition roller and cutting knife are arranged in sequence from high to bottom.

[0006] The present application discloses a film cutting device in which a film roll is mounted on a film roller. As the film is drawn, the roll rotates. Once the film has been drawn to a desired length, a cutting blade slides to cut the film. This improves packaging efficiency. The transition roller is used to transition the film around the film, preventing it from excessively deviating.

[0007] In some embodiments, the frame is provided with a T-shaped guide rail parallel to the transition roller. The cutter includes a shifting head positioned outside the T-shaped guide rail, a T-shaped body integrally connected to the shifting head and mounted within the T-shaped guide rail, and a blade fixedly mounted on the T-shaped body. The blade has an inverted trapezoidal structure that is wider at the top and narrower at the bottom, and has cutting edges on both sides. The inverted trapezoidal structure of the cutter blade, with cutting edges on both sides, allows the cutter to cut the film layer during both forward and reverse travel, thus avoiding idle travel.

[0008] In some embodiments, the frame has two spaced-apart side panels, each of which is provided with a U-shaped groove. The film roll is provided with annular recesses on both axial sides thereof that engage with the U-shaped grooves. The film roll can be directly mounted in the U-shaped grooves via the annular recesses, thereby achieving detachable film roll replacement.

[0009] In some embodiments, a radially variable expansion sleeve is fixedly mounted on the outer periphery of the film roll. The expansion sleeve is a standard component that can achieve radial changes when the bolt is rotated. This configuration is intended to accommodate film rolls with different inner diameters and increase the applicability of the film layer cutting device.

[0010] In some embodiments, the membrane roll is provided with a hollow cavity having an outwardly opening notch. An inflatable elastic bladder is provided within the hollow cavity. A support body is fixedly provided on the outer wall of the elastic bladder, extending from the notch. When the elastic bladder is inflated, the support body bulges radially outward. The elastic bladder is also connected to an inflation valve core for inflation. When the elastic bladder is inflated, the support body can also change radially, thereby accommodating the installation of membrane rolls with different inner diameters.

[0011] In some embodiments, a rodless cylinder that can drive the cutter to move linearly is also provided on the frame. The rodless cylinder can replace the manual sliding cutter, which will be more automated. In order to adapt to the start of the rodless cylinder, a corresponding manual button can be provided on the frame.

[0012] It can be seen from the above technical solution that this application has at least the following advantages and positive effects:

[0013] This application discloses a film cutting device in which a film roll is mounted on a film roller. As the film is drawn, the roll rotates. Once the film has been drawn to a desired length, a cutter slides to cut the film. This improves box packaging efficiency. The transition roller is used to transition the film around the film, preventing it from excessively deviating. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural diagram of an embodiment of the present application;

[0015] Figure 2 This is an exploded view of an embodiment of the present application;

[0016] Figure 3 A cross-sectional view of an embodiment of the present application;

[0017] Figure 4 This is a schematic structural diagram of a cutting knife in an embodiment of the present application;

[0018] Figure 5 A schematic structural diagram of a film roller in an embodiment of the present application;

[0019] Figure 6 This is another structural schematic diagram of the film roller in the embodiment of the present application;

[0020] Figure 7 This is a structural diagram of another embodiment of the present application.

[0021] Explanation of reference numerals: 1. Frame; 11. T-shaped guide rail; 12. Side plate; 121. U-shaped groove; 2. Film roller; 21. Annular recess; 22. Expansion sleeve; 23. Elastic bladder; 24. Support body; 25. Inflatable valve core; 3. Film roll; 4. Transition roller; 5. Cutter; 51. Dial head; 52. T-shaped body; 53. Blade; 531. Cutting edge; 6. Rodless cylinder; DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of this application clearer, this application will be further described in detail below with reference to the accompanying drawings. The terms used in the implementation methods of this application are only used to explain the specific embodiments of this application and are not intended to limit this application.

[0023] See Figures 1 to 7 , an embodiment of the present application provides a film layer cutting device, which is characterized in that it includes: a frame 1, a film roller 2 rotatably arranged on the frame 1 for supporting a film roll 3, a transition roller 4 fixedly arranged on the frame 1 and parallel to the film roller 2, and a cutting knife 5 connected to the frame 1 in a linearly movable manner, the film roller 2 and the frame 1 are detachable, and the film roller 2, transition roller 4 and cutting knife 5 are arranged in sequence from high to bottom.

[0024] The film roll 3 is mounted on the film roller 2. As the film is drawn, the roll 3 rotates. Once the appropriate length of film has been drawn, the cutter 5 slides to cut the film. This improves box packaging efficiency. The transition roller 4 is used to transition the film winding, preventing it from excessively deviating.

[0025] In some embodiments, see Figure 3-4 The frame 1 is provided with a T-shaped guide rail 11 parallel to the transition roller 4. The cutter 5 includes a shifting head 51 located outside the T-shaped guide rail 11, a T-shaped body 52 integrally connected to the shifting head 51 and clamped within the T-shaped guide rail 11, and a blade 53 fixedly mounted on the T-shaped body 52. The blade 53 has an inverted trapezoidal structure that is wide at the top and narrow at the bottom, and has cutting edges 531 on both sides. The blade 53 of the cutter 5 has an inverted trapezoidal structure and is provided with cutting edges 531 on both sides. This allows the cutter 5 to cut the film layer during both forward and reverse travel, avoiding idle travel.

[0026] In some embodiments, see Figure 1-2 The frame 1 has two spaced-apart side panels 12, each of which is provided with a U-shaped groove 121. The film roll 2 is provided with annular recesses 21 on both axial sides thereof that can engage with the U-shaped grooves 121. The film roll 2 can be directly mounted in the U-shaped grooves 121 through the annular recesses 21, thereby being detachable and facilitating replacement of the film roll 3.

[0027] In some embodiments, see Figure 5 The outer circumference of the film roll 2 is also fixedly provided with a radially variable expansion sleeve 22. The expansion sleeve 22 is a standard part that can achieve radial changes when the bolt is rotated. The purpose of this arrangement is to adapt to film rolls 3 with different inner diameters and to increase the applicability of the film layer cutting device.

[0028] In some embodiments, see Figure 6 The film roll 2 is provided with a hollow cavity having a notch opening outward. An inflatable elastic sac 23 is provided in the hollow cavity. A support 24 is fixedly provided on the outer wall of the elastic sac 23. The support 24 extends outward from the notch. When the elastic sac 23 is inflated, the support 24 can bulge radially outward. The elastic sac 23 is also connected to an inflation valve core 25 for inflation. When the elastic sac 23 is inflated, the support 24 can also change radially, and can also accommodate the installation of film rolls 3 with different inner diameters.

[0029] In some embodiments, see Figure 7 , a rodless cylinder 6 that can drive the cutter 5 to move in a straight line is also provided on the frame 1. The rodless cylinder 6 can replace the manual sliding cutter 5, which will be more automated. In order to adapt to the start of the rodless cylinder 6, a corresponding manual button can be provided on the frame 1.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, rather than to limit them. Although the embodiments of the present application have been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A film cutting device, characterized in that: It includes a frame, a film roller rotatably arranged on the frame for supporting a film roll, a transition roller fixedly arranged on the frame and parallel to the film roller, and a cutting knife connected to the frame in a linearly movable manner. The film roller and the frame are detachable, and the film roller, transition roller and cutting knife are arranged in sequence from high to bottom.

2. The film cutting device according to claim 1, characterized in that: The frame is provided with a T-shaped guide rail parallel to the transition roller. The cutting knife includes a dial head located outside the T-shaped guide rail, a T-shaped body integrally connected to the dial head and clamped in the T-shaped guide rail, and a blade fixedly mounted on the T-shaped body. The blade is an inverted trapezoidal structure that is wide at the top and narrow at the bottom, and both sides of the blade have cutting edges.

3. The film cutting device according to claim 1, characterized in that: The frame has two side plates arranged at intervals, each of which is provided with a U-shaped groove, and annular recesses that can be engaged with the U-shaped grooves are provided on both axial sides of the film roller.

4. The film cutting device according to claim 1, characterized in that: A radially variable expansion sleeve is also fixedly provided on the outer circumference of the film roller.

5. The film cutting device according to claim 1, characterized in that: A hollow cavity is provided inside the membrane roller, and the hollow cavity has a notch opening outward. An inflatable elastic sac is provided in the hollow cavity, and a support body is fixedly provided on the outer wall of the elastic sac, and the support body extends out of the notch. When the elastic sac is inflated, the support body can bulge radially outward, and the elastic sac is also connected to an inflation valve core for inflation.

6. The film cutting device according to claim 1, characterized in that: A rodless cylinder capable of driving the cutting knife to move in a straight line is also provided on the frame.

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