Plastic film slitting device

Abstract

The utility model relates to the field of cutting devices, in particular to a plastic film slitting device which comprises a rack, a winding shaft is arranged on the rack, the winding shaft is driven by a winding motor to rotate, a cutting device is further arranged on the rack, the cutting device comprises a cutting motor fixed to the rack, and the cutting motor is driven by the winding shaft to rotate. The cutting device further comprises two symmetrically-arranged fixing plates, the output end of the cutting motor is fixed to one fixing plate, a plurality of connecting rods are further fixed between the two fixing plates, a plurality of fixing blocks are further arranged between the two fixing plates, and the connecting rods penetrate through the fixing blocks and are in sliding connection with the fixing blocks. And cutters are fixed to the fixing blocks, the fixing plate on the right side is further provided with a guide rod rotationally connected with the fixing plate, and every two adjacent fixing blocks are connected through a threaded pipe. According to the device, the width of the slit plastic film can be adjusted.

Description

Technical Field

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

[0002] Plastic film refers to a film made of polyvinyl chloride, polyethylene, polypropylene, polystyrene and other resins, which is widely used in many fields. In the process of production and processing of plastic film, it is necessary to slit the plastic film and then reel it up to change the size of the plastic film to meet different usage requirements. In this process, a film slitting machine is needed. The slitting tools used in some existing film slitting machines are usually fixedly installed on a rolling roller, such as patent application number: CN202221622268.5 A double-sided plastic film digital printing slitting device, a slitting machine body, the upper end of the slitting machine body is fixedly connected to a mounting frame; a slitting mechanism, the slitting mechanism is arranged at the upper end of the slitting machine body, the slitting mechanism is used to slitting the double-sided plastic film, the slitting assembly includes a slitting shaft rotatably connected to the inner wall of the motor, and a plurality of cutting knives are fixedly connected to the surface of the slitting shaft. The plastic film is slit by the cutting knives fixed on the slitting shaft, which makes it inconvenient to adjust the distance between the slitting tools. When slitting plastic films with different slitting widths, the slitting shaft needs to be replaced, thereby reducing the working efficiency of the equipment.

[0003] The present invention is proposed in view of the deficiencies in the prior art. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned disadvantages of the prior art and provide a plastic film slitting device.

[0005] The present invention can be implemented by the following technical solutions:

[0006] The invention discloses a plastic film slitting device, comprising a frame, a winding shaft is arranged on the frame, the winding shaft is driven to rotate by a winding motor, the frame is also provided with a cutting device, the cutting device comprises a cutting motor fixed on the frame, the cutting device also comprises two symmetrically arranged fixing plates, the output end of the cutting motor is fixed to one of the fixing plates, a plurality of connecting rods are fixed between the two fixing plates, a plurality of fixing blocks are arranged between the two fixing plates, the connecting rods pass through the fixing blocks and are slidably connected to the fixing blocks, cutting knives are fixed on the fixing blocks, a guide rod rotatably connected to the fixing plates is also arranged on the fixing plate on the right side, two adjacent fixing blocks are connected by threaded tubes, the threaded tube is arranged on the fixing block on the right side and is rotatably connected to the fixing block, the end of the threaded tube is threadedly connected to the fixing block on the left side of the threaded tube, and the guide rod passes through each threaded tube and is slidably connected to the threaded tube. The fixed plate is driven to rotate by the cutting motor, the connecting rod rotates with the fixed plate, the fixed block rotates with the fixed plate, and the plastic film passing through the cutter position is cut by the high-speed rotating cutter, and the cut plastic film is rolled up on the winding shaft. When the cutting width needs to be adjusted, the guide rod is rotated. Since the guide rod passes through each threaded tube and is slidably connected to the threaded tube, when the guide rod rotates, each threaded tube rotates with the guide rod. Since the threaded tube is arranged on the fixed block on the right side of the threaded tube and is rotatably connected to the fixed block, the end of the threaded tube is threadedly connected to the fixed block on the left side of the threaded tube. When the threaded tube rotates, the fixed block on the left side of the threaded tube is on the threaded tube. The guide rod moves in the direction of the guide rod, and the fixed blocks on the left side of the threaded tube all move in the direction of the threaded tube, that is, the first threaded tube on the right side rotates, and the fixed blocks on the left side of the first threaded tube on the right side all move, and the second threaded tube on the right side rotates, and all the fixed blocks on the left side of the second threaded tube on the right side move, that is, when the guide rod rotates, the first fixed block on the right side does not move, that is, the second fixed block on the right side moves a unit distance, and the third fixed block on the right side moves two units distance, and so on, the distance between two adjacent cutters can be adjusted, thereby adjusting the width of the plastic film after slitting.

[0007] Preferably, guide shafts are arranged on the frames on both sides of the cutting device, and guide rollers are arranged on the guide shafts. The plastic film passes over the two guide rollers.

[0008] Preferably, a support shaft is fixed on the frame, support plates are symmetrically arranged on both sides of the support shaft, the support shaft passes through the support plates and is rotatably connected with the support plates, a pressure shaft is fixed between the two support plates, a pressure roller is arranged on the pressure shaft, a torsion spring is arranged on the support shaft, one end of the torsion spring is fixed on the support shaft, and the other end of the torsion spring is fixed to one of the support plates. The pressure roller presses down the slit plastic film to tighten the plastic film, so that there is no gap between the plastic films after the plastic film is rolled up.

[0009] Preferably, a rotating disk is fixed to the end of the guide rod, and a handle is fixed on the rotating disk, so that the guide rod can be rotated more conveniently through the handle.

[0010] Compared with the prior art, the present invention has the following advantages:

[0011] The device can adjust the distance between two adjacent cutters by rotating the guide rod, thereby adjusting the width of the plastic film after slitting. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0013] Figure 1 It is a structural schematic diagram of the present invention;

[0014] Figure 2 It is a front view of the present invention;

[0015] Figure 3 for Figure 2 Sectional view at AA;

[0016] In the figure: 1, frame; 2, guide shaft; 3, guide roller; 4, support shaft; 5, support plate; 6, pressure roller; 7, torsion spring; 8, reel shaft; 9, reel motor; 10, cutting device; 11, fixing plate; 12, connecting rod; 13, fixing block; 14, cutter; 15, threaded pipe; 16, guide rod; 17, turntable; 18, handle; 19, cutting motor; DETAILED DESCRIPTION

[0017] The embodiments of the present invention are described in detail below with reference to the accompanying drawings:

[0018] Embodiment 1:

[0019] like Figures 1 to 3As shown, this embodiment discloses a plastic film slitting device, comprising a frame 1, a winding shaft 8 is arranged on the frame 1, and the winding shaft 8 is driven to rotate by a winding motor 9, and a cutting device 10 is also arranged on the frame 1, and the cutting device 10 includes a cutting motor 19 fixed to the frame 1, and the cutting device 10 also includes two symmetrically arranged fixed plates 11, and the output end of the cutting motor 19 is fixed to one of the fixed plates 11, and a plurality of connecting rods 12 are fixed between the two fixed plates 11, and a plurality of fixed blocks 13 are also arranged between the two fixed plates 11. The connecting rod 12 passes through the fixed block 13 and is slidably connected to the fixed block 13. The fixed blocks 13 are fixed with cutters 14. The fixed plate 11 on the right is also provided with a guide rod 16 rotatably connected to the fixed plate 11. The two adjacent fixed blocks 13 are connected through a threaded tube 15. The threaded tube 15 is provided on the fixed block 13 on the right side of the threaded tube 15 and is rotatably connected to the fixed block 13. The end of the threaded tube 15 is threadedly connected to the fixed block 13 on the left side of the threaded tube 15. The guide rod 16 passes through each threaded tube 15 and is slidably connected to the threaded tube 15. The fixed plate 11 is driven to rotate by the cutting motor 19, the connecting rod 12 rotates with the fixed plate 11, and the fixed block 13 rotates with the fixed plate 11. The plastic film passing through the position of the cutter 14 is cut by the high-speed rotating cutter 14, and the cut plastic film is rolled up on the winding shaft 8. When the cutting width needs to be adjusted, the guide rod 16 is rotated. Since the guide rod 16 passes through each threaded tube 15 and is slidably connected to the threaded tube 15, when the guide rod 16 rotates, each threaded tube 15 rotates with the guide rod 16. Since the threaded tube 15 is arranged on the fixed block 13 on the right side of the threaded tube 15 and is rotatably connected to the fixed block 13, the end of the threaded tube 15 is threadedly connected to the fixed block 13 on the left side of the threaded tube 15. When the threaded tube 15 rotates, the left side of the threaded tube 15 The fixed block 13 moves in the direction of the threaded tube 15, and the fixed blocks 13 on the left side of the threaded tube 15 all move in the direction of the threaded tube 15, that is, it can be achieved that the first threaded tube 15 on the right side rotates, all the fixed blocks 13 on the left side of the first threaded tube 15 on the right side move, and the second threaded tube 15 on the right side rotates, all the fixed blocks 13 on the left side of the second threaded tube 15 on the right side move, that is, when the guide rod 16 rotates, the first fixed block 13 on the right side does not move, that is, the second fixed block 13 on the right side moves a unit distance, and the third fixed block 13 on the right side moves a unit distance, and so on, the distance between two adjacent cutters 14 can be adjusted, thereby adjusting the width of the plastic film after slitting.

[0020] The frames 1 on both sides of the cutting device 10 are provided with guide shafts 2, and the guide shafts 2 are provided with guide rollers 3. The plastic film passes over the two guide rollers 3.

[0021] Wherein, a rotating disk 17 is fixed to the end of the guide rod 16, and a handle 18 is fixed on the rotating disk 17. The guide rod 16 can be rotated more conveniently by the handle 18.

[0022] Embodiment 2:

[0023] This embodiment discloses a plastic film slitting device. Based on the structure and principle of the embodiment 1, a support shaft 4 is fixed on the frame 1 of this embodiment, and support plates 5 are symmetrically arranged on both sides of the support shaft 4. The support shaft 4 passes through the support plates 5 and is rotatably connected with the support plates 5. A pressure shaft is fixed between the two support plates 5, and a pressure roller 6 is arranged on the pressure shaft. A torsion spring 7 is also arranged on the support shaft 4, and one end of the torsion spring 7 is fixed to the support shaft 4, and the other end of the torsion spring 7 is fixed to one of the support plates 5. The plastic film after slitting is pressed down by the pressure roller 6 to tighten the plastic film, and the plastic film is rolled up after being tightened, so that there is no gap between the plastic films after the plastic film is rolled up.

[0024] The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, various changes, modifications, substitutions and variations can be made to these embodiments without departing from the technical principles of the present invention. These changes, modifications, substitutions and variations should also be regarded as the scope of protection of the present invention.

Claims

1. A plastic film slitting device, comprising a frame, characterized in that: The frame is provided with a winding shaft, and the winding shaft is driven to rotate by the winding motor. The frame is also provided with a cutting device, and the cutting device includes a cutting motor fixed to the frame, and the cutting device also includes two symmetrically arranged fixed plates, the output end of the cutting motor is fixed to one of the fixed plates, and a plurality of connecting rods are fixed between the two fixed plates, and a plurality of fixed blocks are also provided between the two fixed plates, the connecting rods pass through the fixed blocks and are slidably connected to the fixed blocks, and cutting knives are fixed on the fixed blocks, and a guide rod rotatably connected to the fixed plate is also provided on the fixed plate on the right side, and two adjacent fixed blocks are connected by threaded tubes, and the threaded tube is arranged on the fixed block on the right side and is rotatably connected to the fixed block, and the end of the threaded tube is threadedly connected to the fixed block on the left side of the threaded tube, and the guide rod passes through each threaded tube and is slidably connected to the threaded tube.

2. The plastic film slitting device according to claim 1, characterized in that: The frames on both sides of the cutting device are provided with guide shafts, and the guide shafts are provided with guide rollers.

3. The plastic film slitting device according to claim 1, characterized in that: A support shaft is also fixed on the frame, and support plates are symmetrically arranged on both sides of the support shaft. The support shaft passes through the support plates and is rotatably connected to the support plates. A pressure shaft is fixed between the two support plates, and a pressure roller is arranged on the pressure shaft. A torsion spring is also arranged on the support shaft, one end of the torsion spring is fixed on the support shaft, and the other end of the torsion spring is fixed to one of the support plates.

4. The plastic film slitting device according to claim 1, characterized in that: A turntable is fixed at the end of the guide rod, and a handle is fixed on the turntable.

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