Plastic packaging film sample cutting device

Abstract

The invention discloses a plastic packaging film sample cutting device, and belongs to the technical field of plastic packaging film production. A plastic packaging film sample cutting device comprises a base, the surface of the base is fixedly provided with a first supporting plate and a second supporting plate which correspond to each other in position, the surface of the first supporting plate is correspondingly and fixedly provided with two sliding seats, and the interiors of the two sliding seats are slidably connected with L-shaped rods matched with the sliding seats; fixing blocks are fixedly mounted at one ends of the two L-shaped rods correspondingly, and two-way lead screws are rotationally connected into the two fixing blocks correspondingly. Compared with traditional laser cutting equipment, the plastic packaging film sample cutting device has the function of automatically pulling a packaging film body which is not cut to the position between the two rotating rollers, manual intervention is not needed in the operation process, the operation process is simple and rapid, the cutting speed of a laser cutter to the packaging film body is increased, and the working efficiency is improved. And therefore, the cutting efficiency of the laser cutter on the packaging film body is improved.

Description

Technical Field

[0001] The invention relates to the technical field of plastic packaging film production, and more specifically to a plastic packaging film sample cutting device. Background Art

[0002] Plastic packaging film is widely used in the packaging of home appliances, agriculture, machinery, chemicals, building materials and other products. During the production process of plastic packaging film, laser cutting knives are needed to cut the plastic packaging film.

[0003] Chinese patent application number CN202320838467.8 discloses a plastic packaging film sample cutting device, including a support leg, a support platform fixedly connected to the support leg, a first adjustment mechanism arranged on the support platform, an adjustment mechanism arranged on the support platform, two symmetrical support frames slidably connected to the support platform, a roller is connected between the two support frames through a bearing, and by setting a threaded handle, a support member, a first slider, a first spring and other structures, the support member can drive the support frame to rise vertically by rotating the threaded handle, so as to facilitate the placement of the plastic packaging film under the roller, and the first slider is pushed by the first spring, so that the first slider drives the roller through the support frame to always press the plastic packaging film tightly.

[0004] In the above technical solution, the plastic packaging film is smoother and more regular when cut. By setting an adjustment mechanism, the stability of the plastic packaging film sample cutting device is increased. However, after the laser cutting knife cuts the plastic packaging film, one end of the uncut plastic packaging film will fall on the surface of the cutting table. Personnel are required to manually pick up the two sides of the end of the plastic packaging film, and then pull the plastic packaging film to the surface of the conveyor roller so that the plastic packaging film continues to be conveyed and the uncut plastic packaging film is cut in the next step. This process is not only cumbersome to operate, but also affects the cutting speed of the laser cutting knife for the plastic packaging film, thereby affecting the cutting efficiency of the laser cutting knife for the plastic packaging film. Summary of the invention

[0005] The object of the present invention is to provide a plastic packaging film sample cutting device to solve the problems raised in the above background technology: In order to achieve the above object, the present invention provides the following technical solutions: A plastic packaging film sample cutting device comprises a base, wherein two first support plates and a second support plate corresponding to the positions are fixedly mounted on the surface of the base respectively, two slide seats are fixedly mounted on the surface of the first support plate respectively, and L-shaped rods matching therewith are slidably connected to the inside of the two slide seats, and one end of the two L-shaped rods is fixedly mounted with a fixing block, and two bidirectional screw rods are rotatably connected to the inside of the two fixing blocks, and the surfaces of the bidirectional screw rods are respectively threadedly connected with matching upper and lower clamping plates, and triangular blocks are fixedly mounted on the surfaces of the upper and lower clamping plates, and the side surfaces of the fixing blocks are fixedly mounted with the fixing blocks. A connecting rod is fixedly installed, a first pressure rod is fixedly installed on the surface of the connecting rod, a frame rod is fixedly installed on the surface of the L-shaped rod, a second pressure rod with the same height as the first pressure rod is fixedly installed on the surface of the frame rod, one end of the bidirectional screw rod extends above the fixed block, and one end of the bidirectional screw rod is fixedly connected to a gear, two first frame plates are fixedly installed on the surface of the first support plate correspondingly, a first tooth plate meshing with the gear is slidably connected on the surface of the first frame plate, and two second frame plates are fixedly installed on the surface of the second support plate correspondingly, and a second tooth plate meshing with the gear is slidably connected on the surface of the second frame plate.

[0006] By adopting the above technical solution, compared with traditional laser cutting equipment, the device has the function of automatically pulling the uncut packaging film body between the two rollers. The operation process does not require manual intervention and is simple and quick. It improves the cutting speed of the laser cutter on the packaging film body, thereby improving the cutting efficiency of the laser cutter on the packaging film body.

[0007] Preferably, the surfaces of the first frame plate and the second frame plate are both provided with movable grooves, and the interiors of the two movable grooves are slidably connected with movable blocks matching therewith, one end of the two movable blocks are respectively fixedly connected to the first tooth plate and the second tooth plate, the first tooth plate is slidably connected to the first frame plate by matching the movable block and the movable groove, and the second tooth plate is slidably connected to the second frame plate by matching the movable block and the movable groove, and a first spring is elastically connected between the two movable blocks and the two movable grooves.

[0008] By adopting the above technical solution, the gear moves and engages with the first tooth plate, so that the upper clamping plate and the lower clamping plate move toward each other to clamp the surface of the packaging film body, and the gear resets and engages with the second tooth plate, and the upper clamping plate and the lower clamping plate move in opposite directions without clamping the packaging film body.

[0009] Preferably, one end of the first spring is fixedly connected to the inner wall of the movable groove, and the other end of the first spring is fixedly connected to the movable block.

[0010] Preferably, a rotatable first rotating block and a rotatable second rotating block are respectively provided at one end of the first tooth plate and the second tooth plate, and spring shafts are provided on the surfaces of the first rotating block and the second rotating block, and the first rotating block and the second rotating block are respectively rotatably connected to the first tooth plate and the second tooth plate through the spring shafts, and limit blocks for limiting the first rotating block and the second rotating block are respectively fixedly installed on the surfaces of the first tooth plate and the second tooth plate.

[0011] Preferably, the interiors of the two slide seats are both rotatably connected with threaded rods, and the threaded rods are threadedly connected to the L-shaped rod.

[0012] Preferably, a pair of first mounting frames and second mounting frames are fixedly mounted on the surfaces of the first support plate and the second support plate respectively, and two matching sliders are slidably connected to the interiors of the first mounting frame and the second mounting frame respectively, and a rotating rod is rotatably connected to the inner side of the slider, and a rotating roller is fixedly mounted on the surface of any one of the rotating rods, and the packaging film body is transmitted between the two pairs of rollers, and a second spring is elastically connected to the plurality of sliders and the first mounting frame and the second mounting frame respectively.

[0013] Preferably, a slide is fixedly mounted between the first support plate and the second support plate, and a laser cutter for cutting the packaging film body is slidably connected inside the slide.

[0014] Preferably, a motor is fixedly mounted on one end surface of the two slide seats, and an output end of the motor is fixedly connected to the threaded rod.

[0015] Preferably, the upper clamp and the lower clamp move toward each other to clamp the edge of the packaging film body after laser cutting, and the two triangular blocks follow the movement of the upper clamp and the lower clamp and come into contact with each other. During the movement of the two triangular blocks, the slope surfaces of the two triangular blocks squeeze the two rotating rods between the two second mounting frames.

[0016] Preferably, a slide rail is fixedly installed on the end surface of the first support plate, and two moving blocks are correspondingly slidably connected inside the slide rail. Fixed plates are fixedly installed on the surfaces of the two moving blocks, and limiting wheels are rotatably connected inside the two fixed plates for limiting the two side edges of the packaging film body.

[0017] By adopting the above technical solution, the two moving blocks are manually adjusted to move inside the slide rail according to the width of the packaging film body. At this time, the fixed plate and the limiting wheel follow the movement of the moving block, and the two limiting wheels move and contact the two side edges of the packaging film body. During the transmission of the packaging film body, the packaging film body is prevented from deviating, thereby ensuring the stable transmission of the packaging film body.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 1) When the plastic packaging film sample cutting device is in use, compared with the traditional laser cutting equipment, the device has the function of automatically pulling the uncut packaging film body between two rollers. The operation process does not require manual intervention, and the operation process is simple and fast, which improves the cutting speed of the laser cutter on the packaging film body, thereby improving the cutting efficiency of the laser cutter on the packaging film body.

[0019] 2) When the plastic packaging film sample cutting device is in use, when the roller conveys the packaging film body, in order to prevent the packaging film body from loosening and stretching and deforming, a second spring is provided between the plurality of sliders and the first mounting frame and the second mounting frame, so that the roller and the rotating rod can roll stably under the action of the slider and the second spring, and the tension is automatically adjusted during the conveying process of the packaging film body at the moment when the winding shaft is opened and closed, thereby ensuring the stable conveying of the packaging film body.

[0020] 3) When the plastic packaging film sample cutting device is in use, the two moving blocks are manually adjusted to move inside the slide rail according to the width of the packaging film body. At this time, the fixed plate and the limiting wheel follow the movement of the moving block, and the two limiting wheels move and contact the two side edges of the packaging film body. During the transmission of the packaging film body, the deviation of the packaging film body is prevented, thereby ensuring the stable transmission of the packaging film body. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the position structure of the first supporting plate and the second supporting plate of the present invention; Figure 3 It is a schematic diagram of the position structure of the first mounting bracket and the second mounting bracket of the present invention; Figure 4 It is a schematic diagram of the position structure of the slide seat and the first frame plate of the present invention; Figure 5 It is a schematic diagram of the position structure of the movable slot and the movable block of the present invention; Figure 6 It is a schematic diagram of the position structure of the L-shaped rod and the fixing block of the present invention; Figure 7 It is a schematic diagram of the position structure of the second frame plate and the second mounting frame of the present invention; Figure 8 For the present invention Figure 7 A partial structure enlargement of the middle part; Fig. 9 It is a schematic diagram of the position structure of the first support plate and the slide seat of the present invention; Fig.10 It is a schematic diagram of the position structure of the slide rail and the moving block of the present invention; Fig.11 It is a schematic diagram of the positions of the upper clamping plate and the lower clamping plate of the present invention.

[0022] Explanation of the numbers in the figure: 1, base; 2, first support plate; 3, second support plate; 4, slide seat; 5, L-shaped rod; 6, fixed block; 7, bidirectional screw rod; 8, upper clamping plate; 9, lower clamping plate; 10, triangular block; 11, connecting rod; 12, first pressure rod; 13, frame rod; 14, second pressure rod; 15, gear; 16, first frame plate; 17, first tooth plate; 18, second frame plate; 19, second tooth plate; 20, movable groove; 21, movable Block; 22, first spring; 23, first rotating block; 24, limiting block; 25, spring shaft; 26, second rotating block; 27, threaded rod; 28, motor; 29, slide; 30, laser cutter; 31, first mounting frame; 32, second mounting frame; 33, slider; 34, rotating rod; 35, rotating roller; 36, second spring; 37, packaging film body; 38, slide rail; 39, moving block; 40, fixed plate; 41, limiting wheel. DETAILED DESCRIPTION

[0023] Example 1: Please refer to Figure 1 - Fig.11 , a plastic packaging film sample cutting device comprises a base 1, on the surface of the base 1 are respectively fixedly mounted two first support plates 2 and second support plates 3 at corresponding positions, on the surface of the first support plate 2 are correspondingly fixedly mounted two slide seats 4, inside the two slide seats 4 are both slidably connected with L-shaped rods 5 matching therewith, one end of the two L-shaped rods 5 are both fixedly mounted with fixed blocks 6, inside the two fixed blocks 6 are both rotatably connected with bidirectional screw rods 7, on the surfaces of the bidirectional screw rods 7 are respectively threadedly connected with matching upper clamping plates 8 and lower clamping plates 9, the upper clamping plates 8 and the lower clamping plates 9 move towards each other to clamp the surface of the packaging film body 37, the clamping surfaces of the upper clamping plates 8 and the lower clamping plates 9 are installed with rubber pads to prevent damage to the packaging film body 37, the surfaces of the upper clamping plates 8 and the lower clamping plates 9 are both fixedly mounted with triangular blocks 10, the side surfaces of the fixed blocks 6 are fixedly mounted with connecting rods 11, the surface of the connecting rods 11 is fixedly mounted with a first pressing rod 12, the surface of the L-shaped rod 5 A frame rod 13 is fixedly installed on the surface, and a second pressure rod 14 with the same height as the first pressure rod 12 is fixedly installed on the surface of the frame rod 13. One end of the bidirectional screw rod 7 extends to the top of the fixed block 6, and one end of the bidirectional screw rod 7 is fixedly connected to a gear 15. Two first frame plates 16 are fixedly installed on the surface of the first support plate 2 accordingly, and a first toothed plate 17 meshing with the gear 15 is slidably connected on the surface of the first frame plate 16. Two second frame plates 18 are fixedly installed on the surface of the second support plate 3 accordingly, and a second toothed plate 19 meshing with the gear 15 is slidably connected on the surface of the second frame plate 18. Compared with traditional laser cutting equipment, the device has the function of automatically pulling the uncut packaging film body 37 between the two rollers 35. The operation process does not require manual intervention, and the operation process is simple and quick, which improves the cutting speed of the laser cutter 30 on the packaging film body 37, thereby improving the cutting efficiency of the laser cutter 30 on the packaging film body 37.

[0024] The surfaces of the first frame plate 16 and the second frame plate 18 are both provided with movable grooves 20, and the interiors of the two movable grooves 20 are slidably connected with movable blocks 21 matching therewith, one end of the two movable blocks 21 are respectively fixedly connected to the first tooth plate 17 and the second tooth plate 19, the first tooth plate 17 is matched with the movable block 21 and the movable groove 20 to be slidably connected to the first frame plate 16, and the second tooth plate 19 is matched with the movable block 21 and the movable groove 20 to be slidably connected to the second frame plate 18, and a first spring 22 is elastically connected between the two movable blocks 21 and the two movable grooves 20, the gear 15 moves to engage with the first tooth plate 17, so that the upper clamping plate 8 and the lower clamping plate 9 move toward each other to clamp the surface of the packaging film body 37, the gear 15 resets and engages with the second tooth plate 19, and the upper clamping plate 8 and the lower clamping plate 9 move in opposite directions without clamping the packaging film body 37.

[0025] One end of the first spring 22 is fixedly connected to the inner wall of the movable groove 20 , and the other end of the first spring 22 is fixedly connected to the movable block 21 .

[0026] A rotatable first rotating block 23 and a rotatable second rotating block 26 are respectively provided at one end of the first tooth plate 17 and the second tooth plate 19, and a spring shaft 25 is provided on the surface of the first rotating block 23 and the second rotating block 26. The first rotating block 23 and the second rotating block 26 are respectively rotatably connected to the first tooth plate 17 and the second tooth plate 19 through the spring shaft 25, and a limit block 24 for limiting the first rotating block 23 and the second rotating block 26 is respectively fixedly installed on the surface of the first tooth plate 17 and the second tooth plate 19.

[0027] The two slide seats 4 are both rotatably connected with threaded rods 27 inside, and the threaded rods 27 are threadedly connected to the L-shaped rod 5. The arrangement of the threaded rods 27 makes the movement of the L-shaped rod 5 smoother and more stable.

[0028] A pair of first mounting frames 31 and second mounting frames 32 are fixedly mounted on the surfaces of the first support plate 2 and the second support plate 3, respectively. Two matching sliders 33 are slidably connected to the interiors of the first mounting frames 31 and the second mounting frames 32, and a rotating rod 34 is rotatably connected to the inner side of the slider 33. A rotating roller 35 is fixedly mounted on the surface of any rotating rod 34, and a packaging film body 37 is transmitted between the two pairs of rotating rollers 35. Second springs 36 are elastically connected between the plurality of sliders 33 and the first mounting frames 31 and the second mounting frames 32, respectively. The packaging film body 37 is a conventional plastic packaging film in the prior art.

[0029] A slide 29 is fixedly installed between the first support plate 2 and the second support plate 3. A laser cutter 30 for cutting the packaging film body 37 is slidably connected inside the slide 29. The laser cutter 30 is a laser cutting device in the prior art. The laser cutter 30 moves in the slide 29 and is pushed by an electric control push rod in the prior art.

[0030] A motor 28 is fixedly mounted on one end surface of the two slide seats 4. The output end of the motor 28 is fixedly connected to the threaded rod 27. The motor 28 is a conventional forward and reverse motor in the prior art.

[0031] The upper clamping plate 8 and the lower clamping plate 9 move toward each other to clamp the edges of the packaging film body 37 after laser cutting, and the two triangular blocks 10 follow the movement of the upper clamping plate 8 and the lower clamping plate 9 to contact each other. During the movement of the two triangular blocks 10, the slope surfaces of the two triangular blocks 10 squeeze the two rotating rods 34 between the two second mounting frames 32.

[0032] The steps of using the present invention are as follows: when the plastic packaging film sample cutting device is in use, the packaging film body 37 is transmitted through the two rollers 35 between the two first mounting frames 31 and the two second mounting frames 32, and the packaging film body 37 is regularly servo-driven. In the initial state, the upper clamping plate 8 and the lower clamping plate 9 are separated, and the upper clamping plate 8 and the lower clamping plate 9 are located above and below the packaging film body 37. The laser cutter 30 works, and the laser cutter 30 moves along the slide 29, so that the laser cutter 30 cuts the packaging film body 37. The cut packaging film body 37 is transmitted away, and the end of the uncut packaging film body 37 sinks and falls. At this time, the motor 28 rotates forward to rotate the threaded rod 27, so that the L-shaped rod 5 moves in the direction of the second mounting frame 32, the L-shaped rod 5 moves with the fixing block 6, the bidirectional screw rod 7, the upper clamping plate 8, the lower clamping plate 9, the triangular block 10, the connecting rod 11, the first pressure rod 12, the frame rod 13, the second pressure rod 14 and the gear 15. When the gear 15 moves and meshes with the first tooth plate 17 (the number of meshing teeth of the first tooth plate 17 and the gear 15 is just the number of teeth for the upper clamping plate 8 and the lower clamping plate 9 to move towards each other to clamp the packaging film body 37), as the L-shaped rod 5 continues to move, the gear 15 rotates and rotates with the bidirectional screw rod 7, so that the upper clamping plate 8 and the lower clamping plate 9 move towards each other to clamp the surface of the packaging film body 37 (the clamping surfaces of the upper clamping plate 8 and the lower clamping plate 9 are installed with rubber pads to prevent damage to the packaging film body 37). The two triangular blocks 10 follow the upper clamping plate 8 and the lower clamping plate 9 to move toward each other. After the clamping is completed, the gear 15 is disengaged from the first tooth plate 17. The first pressure rod 12 and the second pressure rod 14 squeeze the first rotating block 23 during the movement (note that the heights of the first pressure rod 12 and the second pressure rod 14 are higher than the limit block 24). At this time, the first rotating block 23 rotates away from the limit block 24, and the L-shaped rod 5 continues to move. At this time, the uncut packaging film body 37 is servo-transmitted. When the slopes of the two triangular blocks 10 squeeze the two rotating rods 34 between the two second mounting frames 32, the two rotating rods 34 move vertically in opposite directions and move with the two rollers 35. At this time, the two sliders 33 move in opposite directions to squeeze their respective second springs 36. When the two triangular blocks 10 When the first pressure rod 12 and the second pressure rod 14 are disengaged from the second gear plate 19, the second gear plate 19 is reset under the action of the first spring 22. At this time, one end of the packaging film body 37 is sent between the two rollers 35, and one end of the packaging film body 37 is wound around the winding shaft. The motor 28 reverses and rotates the threaded rod 27. At this time, the L-shaped rod 5 is reset.The L-shaped rod 5 resets with the fixed block 6, the bidirectional screw 7, the upper clamping plate 8, the lower clamping plate 9, the triangular block 10, the connecting rod 11, the first pressure rod 12, the frame rod 13, the second pressure rod 14 and the gear 15. At this time, the first pressure rod 12 and the second pressure rod 14 move above the second tooth plate 19, and the first pressure rod 12 and the second pressure rod 14 squeeze the second rotating block 26. At this time, the second rotating block 26 is not limited by the limit block 24. When the gear 15 is in the reset process and meshes with the second tooth plate 19, the gear 15 reverses and rotates with the bidirectional screw 7, so that the upper clamping plate 8 and the lower clamping plate 9 move in opposite directions without clamping the packaging film body 37. At this time, the two triangular blocks 10 follow the upper clamping plate 8 and the lower clamping plate 9. The two triangular blocks 10 are separated by movement (note that after the two triangular blocks 10 are separated, the distance between the two triangular blocks 10 is smaller than the distance between the two rotating rods 34). After the reset movement of the two triangular blocks 10 is completed, the two rotating rollers 35 are reset under the action of the second spring 36, and then the packaging film body 37 is normally conveyed. During the reset movement of the first pressure rod 12 and the second pressure rod 14, the second pressure rod 14 first squeezes the first rotating block 23. At this time, the first rotating block 23 is blocked by the limit block 24 and moves upward. At this time, the first tooth plate 17 moves towards each other, and the first pressure rod 12 and the second pressure rod 14 move on the bottom surface of the first tooth plate 17. The gear 15 does not mesh with the first tooth plate 17 during the reset process. When the first pressure rod 12 is separated from the first tooth plate 17, at this time, the first toothed plate 17 is reset under the action of the first spring 22. In this scheme, the L-shaped rod 5 moves with the gear 15, and the first pressure rod 12 and the second pressure rod 14 do not squeeze the bottom surface of the first toothed plate 17. When the gear 15 is engaged with the first toothed plate 17, the gear 15 rotates and drives the bidirectional screw rod 7 to rotate, so that the upper clamping plate 8 and the lower clamping plate 9 move toward each other to clamp the surface of the packaging film body 37. The L-shaped rod 5 continues to move, and the first pressure rod 12 and the second pressure rod 14 squeeze the second toothed plate 19, so that the gear 15 does not mesh with the second toothed plate 19. The slopes of the two triangular blocks 10 squeeze the two rotating rods 34 between the two second mounting frames 32, and the two rotating rods 34 move vertically in opposite directions. With two rollers 35, the upper clamping plate 8 and the lower clamping plate 9 send the packaging film body 37 between the two rollers 35. When the L-shaped rod 5 is reset, the gear 15 meshes with the second tooth plate 19 and reverses. The upper clamping plate 8 and the lower clamping plate 9 move in opposite directions and do not clamp the surface of the packaging film body 37. During the reset process of the gear 15, it does not mesh with the first tooth plate 17. Compared with traditional laser cutting equipment, this device has the function of automatically pulling the uncut packaging film body 37 between the two rollers 35. The operation process does not require manual intervention, and the operation process is simple and fast, which improves the cutting speed of the laser cutter 30 on the packaging film body 37, thereby improving the cutting efficiency of the laser cutter 30 on the packaging film body 37.

[0033] Example 2: Please refer to Figure 1 - Fig.11, which is different from the embodiment 1, a slide rail 38 is fixedly installed on the end surface of the first support plate 2, and two moving blocks 39 are slidably connected inside the slide rail 38. Fixed plates 40 are fixedly installed on the surfaces of the two moving blocks 39. The insides of the two fixed plates 40 are rotatably connected with limiting wheels 41 for limiting the two side edges of the packaging film body 37. According to the width of the packaging film body 37, the two moving blocks 39 are manually adjusted to move inside the slide rail 38. At this time, the fixed plate 40 and the limiting wheels 41 follow the movement of the moving block 39, and the two limiting wheels 41 move and contact the two side edges of the packaging film body 37. During the transmission of the packaging film body 37, the packaging film body 37 is prevented from deviating, thereby ensuring the stable transmission of the packaging film body 37.

[0034] The steps of using the present invention are as follows: when using the plastic packaging film sample cutting device, the two moving blocks 39 are manually adjusted to move inside the slide rail 38 according to the width of the packaging film body 37. At this time, the fixed plate 40 and the limiting wheel 41 follow the movement of the moving block 39, and the two limiting wheels 41 move and contact the two side edges of the packaging film body 37. During the transmission of the packaging film body 37, the packaging film body 37 is prevented from deviating, thereby ensuring the stable transmission of the packaging film body 37.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A plastic packaging film sample cutting device, comprising a base (1), characterized in that: The surface of the base (1) is respectively fixedly mounted with two first support plates (2) and a second support plate (3) at corresponding positions; the surface of the first support plate (2) is correspondingly fixedly mounted with two slide seats (4); the interiors of the two slide seats (4) are slidably connected with L-shaped rods (5) matching therewith; one end of the two L-shaped rods (5) is fixedly mounted with a fixing block (6); the interiors of the two fixing blocks (6) are rotatably connected with a bidirectional screw rod (7); the surfaces of the bidirectional screw rods (7) are respectively threadedly connected with a matching upper clamping plate (8) and a lower clamping plate (9); the surfaces of the upper clamping plate (8) and the lower clamping plate (9) are both fixedly mounted with a triangular block (10); the side surface of the fixing block (6) is fixedly mounted with a connecting rod (11); the surface of the connecting rod (11) is fixedly mounted with a connecting rod (11). A first pressure rod (12) is fixedly installed on the surface of the L-shaped rod (5), a frame rod (13) is fixedly installed on the surface of the frame rod (13), a second pressure rod (14) having the same height as the first pressure rod (12) is fixedly installed on the surface of the frame rod (13), one end of the bidirectional screw rod (7) extends above the fixed block (6), and one end of the bidirectional screw rod (7) is fixedly connected to a gear (15), two first frame plates (16) are fixedly installed on the surface of the first support plate (2), and a first toothed plate (17) meshing with the gear (15) is slidably connected on the surface of the first frame plate (16), and two second frame plates (18) are fixedly installed on the surface of the second support plate (3), and a second toothed plate (19) meshing with the gear (15) is slidably connected on the surface of the second frame plate (18).

2. A plastic packaging film sample cutting device according to claim 1, characterized in that: The surfaces of the first frame plate (16) and the second frame plate (18) are both provided with movable grooves (20), and the insides of the two movable grooves (20) are both slidably connected with movable blocks (21) that match them, and one end of the two movable blocks (21) is respectively fixedly connected to the first tooth plate (17) and the second tooth plate (19), and the first tooth plate (17) is slidably connected to the first frame plate (16) by matching the movable block (21) and the movable groove (20), and the second tooth plate (19) is slidably connected to the second frame plate (18) by matching the movable block (21) and the movable groove (20), and a first spring (22) is elastically connected between the two movable blocks (21) and the two movable grooves (20).

3. A plastic packaging film sample cutting device according to claim 2, characterized in that: One end of the first spring (22) is fixedly connected to the inner wall of the movable groove (20), and the other end of the first spring (22) is fixedly connected to the movable block (21).

4. A plastic packaging film sample cutting device according to claim 2, characterized in that: A rotatable first rotating block (23) and a rotatable second rotating block (26) are respectively arranged at one end of the first tooth plate (17) and the second tooth plate (19); a spring shaft (25) is arranged on the surface of each of the first rotating block (23) and the second rotating block (26); the first rotating block (23) and the second rotating block (26) are respectively rotatably connected to the first tooth plate (17) and the second tooth plate (19) via the spring shaft (25); and a limit block (24) for limiting the position of the first rotating block (23) and the second rotating block (26) is respectively fixedly mounted on the surface of the first tooth plate (17) and the second tooth plate (19).

5. The plastic packaging film sample cutting device according to claim 1, characterized in that: The insides of the two sliding seats (4) are both rotatably connected with threaded rods (27), and the threaded rods (27) are threadedly connected to the L-shaped rod (5).

6. A plastic packaging film sample cutting device according to claim 1, characterized in that: A pair of first mounting frames (31) and a second mounting frame (32) are fixedly mounted on the surfaces of the first support plate (2) and the second support plate (3), respectively; two matching sliders (33) are slidably connected inside the first mounting frame (31) and the second mounting frame (32), and a rotating rod (34) is rotatably connected inside the slider (33); a rotating roller (35) is fixedly mounted on the surface of any rotating rod (34); a packaging film body (37) is transmitted between the two pairs of rotating rollers (35); and a plurality of sliders (33) are elastically connected to the first mounting frame (31) and the second mounting frame (32) respectively by a second spring (36).

7. A plastic packaging film sample cutting device according to claim 6, characterized in that: A slide (29) is fixedly mounted between the first support plate (2) and the second support plate (3), and a laser cutter (30) for cutting a packaging film body (37) is slidably connected inside the slide (29).

8. The plastic packaging film sample cutting device according to claim 5, characterized in that: A motor (28) is fixedly mounted on one end surface of the two slide seats (4), and an output end of the motor (28) is fixedly connected to the threaded rod (27).

9. The plastic packaging film sample cutting device according to claim 6, characterized in that: The upper clamping plate (8) and the lower clamping plate (9) move towards each other to clamp the edge of the packaging film body (37) after laser cutting, and the two triangular blocks (10) follow the movement of the upper clamping plate (8) and the lower clamping plate (9) to contact each other. During the movement of the two triangular blocks (10), the slope surfaces of the two triangular blocks (10) press against the two rotating rods (34) between the two second mounting frames (32).

10. The plastic packaging film sample cutting device according to claim 6, characterized in that: A slide rail (38) is fixedly mounted on the end surface of the first support plate (2), and two moving blocks (39) are slidably connected inside the slide rail (38). Fixed plates (40) are fixedly mounted on the surfaces of the two moving blocks (39), and limiting wheels (41) are rotatably connected inside the two fixed plates (40) for limiting the two side edges of the packaging film body (37).

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