A plastic film cutting device

Abstract

The utility model discloses a plastic film cutting device, including base, both sides of base all are installed with support vertical board, install crossbeam and sliding beam between two support vertical boards, install hollow beam between two support vertical boards one side of sliding beam, hollow beam both ends are installed with bearing seat and first speed reducer motor respectively, bearing seat and first speed reducer motor output all are installed with first belt pulley, and two first belt pulleys are connected through first belt drive, hollow beam bottom installs linear guide rail, and the bottom of linear guide rail and sliding beam are connected with the sliding block of mutual sliding, and the sliding block is connected with first belt bottom horizontal section, and the sliding block bottom installs cutting motor, and cutting motor output end installs cutting blade, and the driven roller and driving roller are rotatably installed through bearing seat between two support vertical boards below crossbeam, and the pressing plate is installed one side of driving roller between two support vertical boards, and a pair of first cylinder output end commonly installs the pressing plate.

Description

Technical Field

[0001] This utility model relates to the technical field of plastic film production equipment, and in particular to a plastic film cutting device. Background Technology

[0002] Cutting is a crucial step in the production and processing of plastic film, requiring precise cutting of continuous plastic film to specific dimensions. Currently, existing plastic film cutting devices suffer from several problems. Firstly, the plastic film is prone to deviation and wrinkling during cutting, leading to inaccurate dimensions and affecting product quality. Secondly, the movement of the cutting mechanism is not smooth enough, and the cutting blades lack precision, easily resulting in uneven cut edges. Furthermore, some devices do not effectively compress the plastic film, causing it to shift during cutting, further reducing cutting accuracy. Utility Model Content

[0003] To address the problems mentioned above, this utility model adopts the following technical solution: A plastic film cutting device includes a base, with supporting plates installed on both sides of the base. A crossbeam and a sliding beam are installed between the two supporting plates. A hollow beam is installed between the two supporting plates on one side of the sliding beam. A bearing seat and a first geared motor are respectively installed at both ends of the hollow beam. A first pulley is installed on the bearing seat and the output end of the first geared motor. The two first pulleys are connected by a first belt drive. A linear guide rail is installed at the bottom of the hollow beam. A sliding block is slidably connected to the bottom of the linear guide rail and the sliding beam. The sliding block is connected to the bottom transverse section of the first belt. A cutting motor is installed at the bottom of the sliding block. A cutting blade is installed at the output end of the cutting motor. A driven roller and a driving roller are rotatably installed between the two supporting plates below the crossbeam via bearing seats. A lower pressure plate is installed between the two supporting plates on one side of the driving roller. A pair of first cylinders are installed on one side of the hollow beam. The lower pressure plate is installed at the output ends of the pair of first cylinders.

[0004] Furthermore, a second reduction motor is installed on the outer side of one of the supporting uprights, and a second pulley is installed on the output end of the reduction motor and one end of the drive roller extending to the outer side of the supporting upright. The two second pulleys are connected by a second belt drive.

[0005] Furthermore, a pressure plate rubber strip is installed at the bottom of the lower pressure plate.

[0006] Furthermore, two support beams are installed between the crossbeam and the hollow beam, and a second cylinder is installed on the support beam above the driven roller. A brake key for the driven roller is installed at the output end of the second cylinder.

[0007] Furthermore, a material cylinder is rotatably installed at the head end between the two supporting uprights.

[0008] The advantages of this invention are as follows: By setting up a cutting and moving mechanism composed of a hollow beam, a first reduction motor, a first pulley, a first belt, a linear guide rail, and a sliding block, the cutting motor and cutting blade can be driven to move smoothly, ensuring the straightness and accuracy of the cutting and improving the cutting quality. The driven roller and the driving roller work together to achieve stable conveying of the plastic film, while the second reduction motor drives the driving roller to rotate through the second pulley and the second belt, precisely controlling the conveying speed of the plastic film, making the conveying and cutting actions more coordinated and improving production efficiency. The pressure plate rubber strip at the bottom of the lower pressure plate, when pressing the plastic film, not only enhances the pressing effect and prevents displacement of the plastic film during cutting, but also avoids damage to the surface of the plastic film, thus playing a protective role. The second cylinder drives the driven roller brake button to brake the driven roller during cutting, preventing the plastic film from continuing to move due to inertia, ensuring the accuracy of the cutting dimensions, and further improving cutting precision. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model.

[0010] In the diagram, 1 - base, 2 - support plate, 3 - crossbeam, 4 - sliding beam, 5 - hollow beam, 6 - bearing seat, 7 - first geared motor, 8 - first pulley, 9 - first belt, 10 - linear guide rail, 11 - sliding block, 12 - cutting motor, 13 - cutting blade, 14 - driven roller, 15 - driving roller, 16 - first lower pressure plate, 17 - first cylinder, 18 - second lower pressure plate, 19 - second geared motor, 20 - second pulley, 21 - second belt, 22 - pressure plate rubber strip, 23 - support beam, 24 - second cylinder, 25 - driven roller brake key, 26 - material cylinder. Detailed Implementation

[0011] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0012] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0013] See Figure 1-2 As shown, a plastic film cutting device includes a base 1, with supporting plates 2 installed on both sides of the base 1. A crossbeam 3 and a sliding beam 4 are installed between the two supporting plates 2. A hollow beam 5 is installed between the two supporting plates 2 on one side of the sliding beam 4. Bearing seats 6 and a first reduction motor 7 are respectively installed at both ends of the hollow beam 5. First pulleys 8 are installed on the bearing seats 6 and the output end of the first reduction motor 7. The two first pulleys 8 are connected by a first belt 9. A linear guide rail 10 is installed at the bottom of the hollow beam 5. The bottom of the linear guide rail 10 and the sliding beam 4 are connected by a first belt 9. A sliding block 11 is slidably connected to the beam 4. The sliding block 11 is connected to the bottom transverse section of the first belt 9. A cutting motor 12 is installed at the bottom of the sliding block 11. A cutting blade 13 is installed at the output end of the cutting motor 12. A driven roller 14 and a driving roller 15 are rotatably installed between the two support plates 2 below the crossbeam 3 through bearing seats. A first lower pressure plate 16 is installed between the two support plates 2 on one side of the driving roller 15. A pair of first cylinders 17 are installed on one side of the hollow beam 5. A second lower pressure plate 18 is installed at the output end of the pair of first cylinders 17.

[0014] A second geared motor 19 is installed on the outer side of one of the support plates 2. The output end of the geared motor 19 and one end of the drive roller 6 extending to the outer side of the support plate 2 are both equipped with second pulleys 20. The two second pulleys 20 are connected by a second belt 21, which provides a stable power source for the drive roller 15, ensuring that the plastic film conveying and cutting actions are coordinated, and improving the stability and reliability of the device operation.

[0015] The bottom of the second lower pressure plate 18 is equipped with a pressure plate rubber strip 22. When the first cylinder 17 drives the second lower pressure plate 18 to press the plastic film, it can not only closely adhere to the surface of the plastic film, enhance the pressing effect on the plastic film, effectively prevent the plastic film from shifting during the cutting process, and ensure cutting accuracy, but also avoid the second lower pressure plate 18 from hard contacting the plastic film, which would cause scratches or damage to the surface of the plastic film, thus playing a role in protecting the plastic film.

[0016] Two support beams 23 are installed between the crossbeam 3 and the hollow beam 5. A second cylinder 24 is installed on the support beam 23 above the driven roller 14. A driven roller brake key 25 is installed at the output end of the second cylinder 24. When the plastic film is conveyed to the set cutting position, the second cylinder 24 pushes the driven roller brake key 25 to contact the driven roller 14, which can quickly brake the driven roller 14. This effectively prevents the plastic film from continuing to move due to inertia, ensuring that the plastic film remains stationary at the moment of cutting, guaranteeing the accuracy of the cutting size, further improving the cutting precision, and meeting the high precision requirements for cutting plastic film.

[0017] A material cylinder 26 is rotatably installed at the first end between the two support plates 2. Its rotational characteristics make the plastic film roll smoother during unwinding, reducing the resistance and pulling force when unwinding the plastic film.

[0018] Working principle: The plastic film roll is installed on the feed cylinder 26. One end of the plastic film is pulled out and passed sequentially between the driven roller 14 and the driving roller 15, and under the first lower pressure plate 16 and the second lower pressure plate 18, in preparation for cutting. The second reduction motor 19 is started, and its output end drives the driving roller 15 to rotate through the second pulley 20 and the second belt 21. The driving roller 15 cooperates with the driven roller 14 to drive the plastic film forward at a set speed. When the plastic film is conveyed to the set cutting position, the second reduction motor 19 is turned off. The two second cylinders 24 are activated simultaneously, pushing the driven roller brake key 25 downward, so that the driven roller brake key 25 contacts the driven roller 14, braking the driven roller 14 and stopping the conveying of the plastic film. At the same time, a pair of first cylinders 17 are activated simultaneously, pushing the second lower pressure plate 18 downward. The bottom pressure plate rubber strip 22 presses the plastic film tightly onto the first lower pressure plate 16 below to prevent the plastic film from moving during cutting. The first reduction motor 7 is started, and its output end drives the first pulley 8 to rotate. Through the first belt 9, the sliding block 11 slides smoothly on the linear guide rail 10 and the sliding beam 4. At the same time, the cutting motor 12 is started, driving the cutting blade 13 to rotate at high speed. The sliding block 11 drives the cutting blade 13 to move in a straight line to cut the pressed plastic film. After cutting, the cutting motor 12 stops working, the first reduction motor 7 reverses, and drives the sliding block 11 and the cutting blade 13 back to the initial position. The first cylinder 17 and the second cylinder 24 respectively drive the second lower pressure plate 18 and the driven roller brake key 25 to reset. The second reduction motor 19 is started again, driving the plastic film to continue to be conveyed and enter the next cutting cycle.

[0019] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0020] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A plastic film cutting device, comprising a base (1), wherein support plates (2) are installed on both sides of the base (1), characterized in that: A crossbeam (3) and a sliding beam (4) are installed between the two supporting uprights (2). A hollow beam (5) is installed between the two supporting uprights (2) on one side of the sliding beam (4). A bearing seat (6) and a first geared motor (7) are respectively installed at both ends of the hollow beam (5). A first pulley (8) is installed on the bearing seat (6) and the output end of the first geared motor (7). The two first pulleys (8) are connected by a first belt (9). A linear guide rail (10) is installed at the bottom of the hollow beam (5). A sliding block (11) is slidably connected to the bottom of the linear guide rail (10) and the sliding beam (4). The sliding block (11) is connected to the bottom transverse section of the first belt (9). A cutting motor (12) is installed at the bottom of the sliding block (11). A cutting blade (13) is installed at the output end of the cutting motor (12). A driven roller (14) and a driving roller (15) are rotatably installed between the two support plates (2) below the crossbeam (3) through bearing seats. A first pressure plate (16) is installed between the two support plates (2) on one side of the driving roller (15). A pair of first cylinders (17) are installed on one side of the hollow beam (5). A second pressure plate (18) is installed at the output end of the pair of first cylinders (17).

2. The plastic film cutting device according to claim 1, characterized in that: A second geared motor (19) is installed on the outside of one of the support plates (2). The output end of the geared motor (19) and one end of the drive roller (15) extending to the outside of the support plate (2) are both equipped with second pulleys (20). The two second pulleys (20) are connected by a second belt (21).

3. The plastic film cutting device according to claim 2, characterized in that: The bottom of the second lower pressure plate (18) is equipped with a pressure plate rubber strip (22).

4. A plastic film cutting device according to claim 3, characterized in that: Two support beams (23) are installed between the crossbeam (3) and the hollow beam (5). A second cylinder (24) is installed on the support beam (23) above the driven roller (14). A driven roller brake key (25) is installed at the output end of the second cylinder (24).

5. A plastic film cutting device according to claim 4, characterized in that: A material cylinder (26) is rotatably installed at the head end between the two support plates (2).

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