Plastic film cutting device

Abstract

The utility model provides a plastic film cutting device, which relates to the technical field of plastic film cutting devices and comprises an equipment table, mounting plates are fixedly connected onto the equipment table, film rollers are arranged on the mounting plates, two mounting plates are fixedly connected onto the equipment table, and film rollers are arranged on the mounting plates. Two first fixing plates are fixedly connected to the equipment table, two conveying rollers are jointly and rotationally connected to the two first fixing plates, a first motor is fixedly connected to one first fixing plate, and an output shaft of the first motor is fixedly connected with one conveying roller. The plastic film cutting device solves the problems that due to the fact that plastic films are light and soft in texture and lack of pressing, wrinkles or ripples are likely to be generated near cutting points of the films, the flatness of the cutting faces is affected, the edges after cutting are irregular, and follow-up use and attractiveness are affected. The plastic film cutting device solves the problems that due to the fact that the plastic films are light and soft in texture and lack of pressing, the plastic films are prone to generating wrinkles or ripples near the cutting points, the flatness of the cutting faces is affected, and the edges after cutting are irregular.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic film cutting devices, in particular to a plastic film cutting device. Background Art

[0002] Plastic film is made of polyvinyl chloride, polyethylene, polypropylene, polystyrene and other resins, used for packaging and as a coating layer. Plastic packaging and plastic packaging products occupy an increasingly larger share in the market, especially composite plastic flexible packaging, which has been widely used in food, medicine, chemical and other fields. Among them, food packaging accounts for the largest proportion, such as beverage packaging, quick-frozen food packaging, steamed food packaging, fast food packaging, etc. These products have brought great convenience to people's lives. In the output process of plastic film, a cutting device is needed to cut the plastic film.

[0003] When using the current plastic film cutting device, staff often find that the current plastic film cutting device usually uses a cutting knife to cut the plastic film. Since the plastic film is light and soft, the lack of pressure can easily cause wrinkles or ripples in the film near the cutting point, thereby affecting the flatness of the cut surface. The edge after cutting will be irregular, which will affect the subsequent use and appearance. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a plastic film cutting device.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a plastic film cutting device, comprising an equipment table, two mounting plates fixedly connected to the equipment table, a film roller is provided on the mounting plate, two first fixed plates fixedly connected to the equipment table, two transmission rollers are connected to the two first fixed plates for common rotation, a first motor is fixedly connected to one of the first fixed plates, an output shaft of the first motor is fixedly connected to one of the transmission rollers, two gears are rotatably connected to one of the first fixed plates, the two gears are meshed with each other, and two second fixed plates are fixedly connected to the equipment table, two second fixed plates are connected to the two second fixed plates for common rotation. A limiting roller, a second motor is fixedly connected to the second fixed plate, the output shaft of the second motor is fixedly connected to the limiting roller, a gantry is fixedly connected to the equipment table, a cylinder is fixedly connected to the gantry, a rectangular plate is fixedly connected to the piston rod of the cylinder, a cutting knife is fixedly connected to the rectangular plate, a pressing structure is provided on the rectangular plate, and the pressing structure is mainly composed of a plurality of fixed blocks, and the plurality of fixed blocks are fixedly connected to the rectangular plate, and a rotating rod is connected to the two fixed blocks for rotation together, an adjusting slot is provided on the rotating rod, a sliding rod is slidably connected in the adjusting slot, and a roller is connected to the two sliding rods for rotation together.

[0006] The effect achieved by the above components is as follows: the film roll is installed on the mounting plate, the film on the film roll is passed between the two transmission rollers, and then passed from the bottom of the limit roller to the bottom of the cutting knife, the cylinder is started, and the piston rod of the cylinder drives the cutting knife to descend to cut the film. The cut film falls into the collection frame for collection, and the first motor is started. The output shaft of the first motor drives a transmission roller to rotate. Under the action of two gears, the two transmission rollers rotate in opposite directions to transport the film. The second motor is started. The output shaft of the second motor drives the limit roller to rotate to further transport the film. In the process of the cylinder driving the rectangular plate to descend, the rectangular plate will drive the four rotating rods to descend, and then drive the two rollers to descend. The rollers will preferentially contact the plastic film, press the plastic film on both sides of the cutting knife, and as the rectangular plate descends, the two rollers will roll to both sides, making the film flatter, thereby avoiding the problem that the plastic film is light and soft, and the lack of pressure easily causes the film to have wrinkles or ripples near the cutting point, which affects the flatness of the cut surface and the irregularity of the cut edge, which affects the subsequent use and appearance.

[0007] Preferably, a spring is fixedly connected to the inner wall of the adjustment groove, and one end of the spring is fixedly connected to the sliding rod.

[0008] The effect achieved by the above components is: after the roller contacts the plastic film, the rectangular plate continues to descend, the sliding rod will slide into the adjustment slot, and then squeeze the spring to contract, and the rebound force of the spring will act on the sliding rod to improve the limiting effect.

[0009] Preferably, four limiting blocks are fixedly connected to the rectangular plate.

[0010] The effect achieved by the above components is that the limit block can limit the rotating rod and prevent the rotating rod from rotating inwards.

[0011] Preferably, sliding grooves are respectively provided on the inner walls on both sides of the gantry, and sliders are slidably connected in the sliding grooves, and the sliders are fixedly connected to the rectangular plates.

[0012] The effect achieved by the above components is that the slider slides in the sliding groove with limited position, which can make the descending process of the rectangular plate more stable.

[0013] Preferably, an installation structure is provided on the equipment platform, and the installation structure is mainly composed of a sliding groove, the sliding groove is opened on the equipment platform, a sliding block is slidably connected in the sliding groove, and round blocks are rotatably connected to the installation plate and the sliding block, and clamping blocks are fixedly connected on both sides of the film roller, and a clamping groove is opened on the round block.

[0014] The effect achieved by the above components is: slide the sliding block outwards and insert one card block into the card slot, then slide the sliding block inwards to insert the other card block into the corresponding card slot, so that the film roller can be quickly replaced and installed.

[0015] Preferably, two connecting blocks are fixedly connected to the clamping block, and two connecting grooves are formed on the inner wall of the clamping groove.

[0016] The effect achieved by the above components is that the connecting block is clamped into the corresponding connecting groove, which can prevent the block from rotating in the groove, so that the film roller rotates more stably with the round block.

[0017] Preferably, a threaded rod is rotatably connected in the sliding groove, and the threaded rod is threadedly connected to the sliding block.

[0018] The effect achieved by the above components is that since the sliding block slides in a limited position in the sliding groove, rotating the threaded rod can drive the sliding block to slide, making the position of the sliding block more stable.

[0019] Preferably, a third motor is fixedly connected to the equipment table, and the output shaft of the third motor is fixedly connected to the threaded rod.

[0020] The effect achieved by the above components is: starting the third motor, the output shaft of the third motor drives the threaded rod to rotate, making the operation more convenient.

[0021] Compared with the prior art, the advantages and positive effects of the present invention are that, in the present invention, by setting a pressing structure, when the cylinder drives the rectangular plate to descend, the rectangular plate will drive the four rotating rods to descend, and then drive the two rollers to descend. The rollers will first contact the plastic film, press the plastic film on both sides of the cutting knife, and as the rectangular plate descends, the two rollers will roll to both sides, making the film flatter. After the rollers contact the plastic film, the rectangular plate continues to descend, and the sliding rod will slide into the adjusting groove, thereby squeezing the spring to contract, and the rebound elastic force of the spring will act on the sliding rod to improve the limiting effect. The limit block can limit the rotating rod to prevent the rotating rod from rotating inward, and the slider can slide in the sliding groove to make the rectangular plate descending process more stable, thereby avoiding the situation that the plastic film is light and soft, and the lack of pressure easily causes the film to have wrinkles or ripples near the cutting point, thereby affecting the flatness of the cutting surface, and the cut edge will be irregular, which affects subsequent use and aesthetics. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of a plastic film cutting device proposed in the utility model;

[0023] Figure 2 This is a schematic diagram of the three-dimensional structure of a plastic film cutting device from another perspective proposed by the utility model;

[0024] Figure 3 This is a partial schematic diagram of a pressing structure of a plastic film cutting device proposed in the utility model;

[0025] Figure 4 The utility model provides a partial schematic diagram of the installation structure of a plastic film cutting device.

[0026] Legend: 1. Equipment table; 2. Mounting plate; 3. Film roller; 4. First fixed plate; 5. Transport roller; 6. Second fixed plate; 7. Limiting roller; 8. Pressing structure; 81. Fixed block; 82. Rotating rod; 83. Adjusting slot; 84. Sliding rod; 85. Roller; 86. Spring; 87. Limiting block; 88. Slide slot; 89. Slider; 9. Mounting structure; 91. Sliding slot; 92. Sliding block; 93. Round block; 94. Slot; 95. Block; 96. Connecting slot; 97. Connecting block; 98. Threaded rod; 99. Third motor; 10. Gantry; 11. Cylinder; 12. Rectangular plate; 13. Cutting knife; 14. Collection frame; 15. First motor; 16. Gear; 17. Second motor. DETAILED DESCRIPTION

[0027] Example 1, as Figure 1 and Figure 2As shown, a plastic film cutting device includes an equipment table 1, two mounting plates 2 are fixedly connected to the equipment table 1, a film roller 3 is provided on the mounting plate 2, two first fixed plates 4 are fixedly connected to the equipment table 1, two transmission rollers 5 are connected to the two first fixed plates 4 for common rotation, a first fixed plate 4 is fixedly connected to a first motor 15, the output shaft of the first motor 15 is fixedly connected to a transmission roller 5, two gears 16 are rotatably connected to a first fixed plate 4, and the two gears 16 are meshed with each other, two second fixed plates 6 are fixedly connected to the equipment table 1, the two second fixed plates 6 are connected to a limiting roller 7 for common rotation, a second fixed plate 6 is fixedly connected to the second motor 17, the output shaft of the second motor 17 is fixedly connected to the limiting roller 7, a gantry 10 is fixedly connected to the gantry 10, a cylinder 11 is fixedly connected to the gantry 10, a rectangular plate 12 is fixedly connected to the piston rod of the cylinder 11, and a cutting knife 13 is fixedly connected to the rectangular plate 12.

[0028] Reference Figure 3, a pressing structure 8 is provided on the rectangular plate 12, and the pressing structure 8 is mainly composed of a plurality of fixed blocks 81, and the plurality of fixed blocks 81 are fixedly connected to the rectangular plate 12, and a rotating rod 82 is connected to the two fixed blocks 81 for rotation together, and an adjusting slot 83 is provided on the rotating rod 82, and a sliding rod 84 is slidably connected in the adjusting slot 83, and a roller 85 is connected to the two sliding rods 84 for rotation together. The film roller 3 is installed on the mounting plate 2, and the film on the film roller 3 is passed between the two transmission rollers 5, and then passed from the bottom of the limit roller 7 to the bottom of the cutting knife 13, and the cylinder 11 is started. The cylinder 11 The piston rod drives the cutting knife 13 to descend and cut the film. The cut film falls into the collection frame 14 for collection. The first motor 15 is started. The output shaft of the first motor 15 drives a transmission roller 5 to rotate. Under the action of two gears 16, the two transmission rollers 5 rotate in opposite directions to convey the film. The second motor 17 is started. The output shaft of the second motor 17 drives the limiting roller 7 to rotate to further convey the film. In the process of the cylinder 11 driving the rectangular plate 12 to descend, the rectangular plate 12 will drive the four rotating rods 82 to descend, and then drive the two rollers 85 to descend. The rollers 8 5 will first contact with the plastic film, press the plastic film on both sides of the cutting knife 13 and as the rectangular plate 12 descends, the two rollers 85 will roll to both sides, making the film flatter, thereby avoiding the problem that the plastic film is light and soft, and the lack of pressure will easily cause the film to have wrinkles or ripples near the cutting point, which affects the flatness of the cutting surface and the irregular edge after cutting, which affects the subsequent use and aesthetics. A spring 86 is fixedly connected to the inner wall of the adjustment groove 83, and one end of the spring 86 is fixedly connected to the sliding rod 84. After the roller 85 contacts the plastic film, the rectangular As the plate 12 continues to descend, the sliding rod 84 will slide into the adjusting slot 83, thereby squeezing the spring 86 to contract. The rebound force of the spring 86 will act on the sliding rod 84 to improve the limiting effect. Four limit blocks 87 are fixedly connected to the rectangular plate 12. The limit blocks 87 can limit the rotating rod 82 to prevent the rotating rod 82 from rotating inward. Slide grooves 88 are respectively provided on the inner walls on both sides of the gantry 10. Slide blocks 89 are slidably connected in the slide grooves 88. The slide blocks 89 are fixedly connected to the rectangular plate 12. The slide blocks 89 slide in the slide grooves 88 to limit the downward movement of the rectangular plate 12, which can make the descending process of the rectangular plate 12 more stable.

[0029] Reference Figure 2 and Figure 4, a mounting structure 9 is provided on the equipment table 1, and the mounting structure 9 is mainly composed of a sliding groove 91. The sliding groove 91 is opened on the equipment table 1, and a sliding block 92 is slidably connected in the sliding groove 91. A round block 93 is rotatably connected to the mounting plate 2 and the sliding block 92. Both sides of the film roller 3 are fixedly connected with a card block 95, and a card slot 94 is opened on the round block 93. Slide the sliding block 92 outward, and snap one card block 95 into the card slot 94, and then slide the sliding block 92 inward so that the other card block 95 is snapped into the corresponding card slot 94, so that the film roller 3 can be quickly replaced and installed. Two connecting blocks 97 are fixedly connected to the card block 95, and two are opened on the inner wall of the card slot 94 The connecting groove 96, inserting the connecting block 97 into the corresponding connecting groove 96, can prevent the block 95 from rotating in the slot 94, so that the film roller 3 can rotate more stably with the round block 93. A threaded rod 98 is rotatably connected in the sliding groove 91, and the threaded rod 98 is threadedly connected to the sliding block 92. Since the sliding block 92 slides in the sliding groove 91, rotating the threaded rod 98 can drive the sliding block 92 to slide, making the position of the sliding block 92 more stable. A third motor 99 is fixedly connected to the equipment table 1, and the output shaft of the third motor 99 is fixedly connected to the threaded rod 98. Start the third motor 99, and the output shaft of the third motor 99 drives the threaded rod 98 to rotate, making operation more convenient.

[0030] Working principle: install the film roller 3 on the mounting plate 2, pass the film on the film roller 3 between the two transmission rollers 5, and then pass it from under the limit roller 7 to under the cutting knife 13, start the cylinder 11, the piston rod of the cylinder 11 drives the cutting knife 13 to descend and cut the film, and the cut film falls into the collection frame 14 for collection, start the first motor 15, the output shaft of the first motor 15 drives one transmission roller 5 to rotate, and under the action of the two gears 16, the two transmission rollers 5 rotate in opposite directions to transport the film, start the second motor 17, and the output shaft of the second motor 17 drives the transmission roller 5 to rotate. The output shaft drives the limiting roller 7 to rotate, further conveying the film. In the process of the cylinder 11 driving the rectangular plate 12 to descend, the rectangular plate 12 will drive the four rotating rods 82 to descend, and then drive the two rollers 85 to descend. The rollers 85 will first contact the plastic film, press the plastic film on both sides of the cutting knife 13 and as the rectangular plate 12 descends, the two rollers 85 will roll to both sides, making the film flatter, thereby avoiding the problem that the plastic film is light and soft, and the lack of pressure will easily cause the film to have wrinkles or ripples near the cutting point, thereby affecting the flatness of the cutting surface. The edge of the rectangular plate 12 will be irregular, which will affect the subsequent use and aesthetics. After the roller 85 contacts the plastic film, the rectangular plate 12 continues to descend, and the sliding rod 84 will slide into the adjustment groove 83, thereby squeezing the spring 86 to contract. The rebound force of the spring 86 will act on the sliding rod 84 to improve the limiting effect. The limit block 87 can limit the rotating rod 82 to prevent the rotating rod 82 from rotating inwardly. The slider 89 slides in the sliding groove 88 to make the descending process of the rectangular plate 12 more stable, slide the sliding block 92 outward, and snap a block 95 into the slot 94, and then Sliding the sliding block 92 inward allows the other block 95 to be inserted into the corresponding slot 94, so that the film roller 3 can be quickly replaced and installed. Inserting the connecting block 97 into the corresponding connecting slot 96 can prevent the block 95 from rotating in the slot 94, so that the film roller 3 can rotate more stably with the round block 93. Since the sliding block 92 slides in the sliding slot 91, rotating the threaded rod 98 can drive the sliding block 92 to slide, making the position of the sliding block 92 more stable. Start the third motor 99, and the output shaft of the third motor 99 drives the threaded rod 98 to rotate, making the operation more convenient.

[0031] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification of the above embodiment based on the technical essence of the present invention that does not deviate from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A plastic film cutting device, comprising an equipment table (1), characterized in that: Two mounting plates (2) are fixedly connected to the equipment platform (1), a film roller (3) is provided on the mounting plate (2), two first fixed plates (4) are fixedly connected to the equipment platform (1), two transmission rollers (5) are connected to the two first fixed plates (4) in a common rotation, a first motor (15) is fixedly connected to one of the first fixed plates (4), an output shaft of the first motor (15) is fixedly connected to one of the transmission rollers (5), two gears (16) are connected to the one of the first fixed plates (4) in a rotation, and the two gears (16) are meshed with each other, two second fixed plates (6) are fixedly connected to the equipment platform (1), two second fixed plates (6) are connected to the limiting roller (7) in a common rotation, a second motor (17) is fixedly connected to one of the second fixed plates (6), and the second motor (1 The output shaft of the device (7) is fixedly connected to the limiting roller (7), the equipment platform (1) is fixedly connected to a gantry (10), the gantry (10) is fixedly connected to a cylinder (11), the piston rod of the cylinder (11) is fixedly connected to a rectangular plate (12), the rectangular plate (12) is fixedly connected to a cutting knife (13), a pressing structure (8) is provided on the rectangular plate (12), the pressing structure (8) is mainly composed of a plurality of fixed blocks (81), the plurality of fixed blocks (81) are fixedly connected to the rectangular plate (12), two of the fixed blocks (81) are connected to a rotating rod (82) in common rotation, an adjusting slot (83) is provided on the rotating rod (82), a sliding rod (84) is slidably connected in the adjusting slot (83), and a roller (85) is connected to the two sliding rods (84) in common rotation.

2. The plastic film cutting device according to claim 1, characterized in that: A spring (86) is fixedly connected to the inner wall of the adjustment groove (83), and one end of the spring (86) is fixedly connected to the sliding rod (84).

3. The plastic film cutting device according to claim 2, characterized in that: Four limiting blocks (87) are fixedly connected to the rectangular plate (12).

4. The plastic film cutting device according to claim 3, characterized in that: Slide grooves (88) are respectively provided on the inner walls of both sides of the gantry (10), and a slider (89) is slidably connected in the slide groove (88), and the slider (89) is fixedly connected to the rectangular plate (12).

5. The plastic film cutting device according to claim 4, characterized in that: The equipment platform (1) is provided with a mounting structure (9), and the mounting structure (9) mainly consists of a sliding groove (91). The sliding groove (91) is provided on the equipment platform (1), and a sliding block (92) is slidably connected in the sliding groove (91). A round block (93) is rotatably connected to the mounting plate (2) and the sliding block (92). A clamping block (95) is fixedly connected to both sides of the film roller (3), and a clamping groove (94) is provided on the round block (93).

6. The plastic film cutting device according to claim 5, characterized in that: Two connecting blocks (97) are fixedly connected to the clamping block (95), and two connecting grooves (96) are formed on the inner wall of the clamping groove (94).

7. The plastic film cutting device according to claim 6, characterized in that: A threaded rod (98) is rotatably connected in the sliding groove (91), and the threaded rod (98) is threadedly connected to the sliding block (92).

8. The plastic film cutting device according to claim 7, characterized in that: A third motor (99) is fixedly connected to the equipment platform (1), and an output shaft of the third motor (99) is fixedly connected to the threaded rod (98).

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