A precise cutting device for plastic film manufacturing

Abstract

The utility model provides a kind of accurate cutting device for plastic film manufacturing, it is related to plastic film manufacturing technical field, including: work bench, gantry is installed in work bench top, two mounting plates are installed in work bench one side, work bench top is equipped with moving block, the bottom of gantry is equipped with lifting plate, cutting knife is connected in the bottom of lifting plate;Flat component is equipped on lifting plate, flat component includes: slot, connecting rod, pressing roller and spring;And installation component is equipped on mounting plate, installation component includes: electric push rod, rotating plate and support block.The setting of flat component can flatten and straighten plastic film before cutting, effectively prevent plastic film from wrinkling or uneven stretching, affect cutting accuracy, through the setting of installation component, different size film reel can be quickly fixed, save the time of fixed film reel, improve the overall production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of plastic film manufacturing technology, specifically to a precision cutting device for plastic film manufacturing. Background Technology

[0002] Plastic film is a very common material, widely used in packaging, agriculture, industry and daily life. It is mainly made of synthetic resins (such as polyethylene, polypropylene, etc.) through extrusion molding process. Plastic film cutting is an important step in plastic processing, which aims to precisely cut large rolls of plastic film into small pieces of specific sizes and shapes as needed.

[0003] In the current plastic film cutting process, the film is usually pulled directly from the roll and brought under the cutting blade for cutting. During cutting, the plastic film may have wrinkles or uneven stretching, which affects the cutting accuracy. At the same time, the existing cutting device can only fix film rolls of a single size. When fixing film rolls of different sizes, it is necessary to change the corresponding fixing fixture, which affects the overall production efficiency. Utility Model Content

[0004] The present invention aims to overcome the shortcomings of the prior art and provide a precision cutting device for plastic film manufacturing. By setting up a flattening component, the plastic film can be flattened and straightened before cutting, effectively preventing wrinkles or uneven stretching of the plastic film, which would affect the cutting accuracy. By setting up an installation component, film rolls of different sizes can be quickly fixed, saving time in fixing film rolls and improving overall production efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a precision cutting device for manufacturing plastic film, comprising:

[0006] A workbench, with a gantry frame installed on top, two mounting plates installed on one side of the workbench, a movable block on top of the workbench, a lifting plate at the bottom of the gantry frame, and a cutting blade connected to the bottom of the lifting plate;

[0007] A leveling assembly is provided on the lifting plate, the leveling assembly comprising: a slot, a connecting rod, a pressing roller, and a spring; and

[0008] A mounting assembly disposed on the mounting plate, the mounting assembly comprising: an electric push rod, a rotating plate, and a support block.

[0009] Furthermore, a hydraulic rod is installed on the top of the gantry frame, and the bottom of the hydraulic rod is connected to the lifting plate. A cutting groove corresponding to the position of the cutting blade is opened on the top of the workbench.

[0010] Furthermore, the lifting plate has two slots on each of its opposite sides, and a connecting rod is rotatably connected inside the slot. A pressing roller is rotatably connected between the two connecting rods on the same side. Four fixing blocks are connected to the bottom of the lifting plate. The fixing blocks correspond to the positions of the slots. A spring is connected between the fixing blocks and the connecting rods. The length of the connecting rod on the side closer to the mounting plate is greater than the length of the connecting rod on the other side.

[0011] Furthermore, an electric push rod is installed on the top of the mounting plate, and a rotating plate is connected to one side of the electric push rod. A movable groove is opened on the surface of the rotating plate, and a bidirectional threaded rod is rotatably connected inside the movable groove. A knob is connected to one end of the bidirectional threaded rod, and the knob is located on the outside of the rotating plate.

[0012] Furthermore, two symmetrically arranged support blocks are slidably connected inside the movable groove, and the support blocks are provided with through holes that are threadedly connected to the bidirectional threaded rod. The bidirectional threaded rod is provided with threads in opposite directions at both ends, and the two support blocks are respectively located on the threads at both ends.

[0013] Furthermore, a movable groove is provided on the top of the workbench, and a threaded rod is rotatably connected inside the movable groove. A servo motor is installed inside the workbench, and the servo motor is driven and connected to the threaded rod. A threaded block is threadedly connected to the outside of the threaded rod, and a threaded hole is provided on the threaded block. The top of the threaded block is connected to the movable block.

[0014] Furthermore, a pressing groove is provided on one side of the movable block, and a rotating hole is provided on the top of the movable block. A rotating rod is threadedly connected inside the rotating hole, and a pressing plate is rotatably connected to the bottom end of the rotating rod through a bearing. Two side plates are installed on the top of the workbench, and a transmission roller is rotatably connected between the two side plates.

[0015] The advantages of this invention are that, by setting up the flattening component, the plastic film can be flattened and straightened before cutting, effectively preventing wrinkles or uneven stretching of the plastic film, which would affect the cutting accuracy. By setting up the mounting component, film rolls of different sizes can be quickly fixed, saving time in fixing the film rolls and improving overall production efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is another schematic diagram of the overall structure of this utility model.

[0018] Figure 3 This is a top view of the overall structure of this utility model.

[0019] Figure 4 This is a cross-sectional view of the overall structure of this utility model.

[0020] Figure 5 This is a schematic diagram of the lifting plate structure of this utility model.

[0021] Figure 6 This is a schematic diagram of the pressing roller structure of this utility model.

[0022] Figure 7 This is a schematic diagram of the rotating plate structure of this utility model.

[0023] Figure 1-7 Components: 1. Workbench; 101. Moving slot; 102. Side plate; 103. Transmission roller; 104. Cutting slot; 2. Servo motor; 201. Threaded rod; 202. Threaded block; 203. Threaded hole; 3. Moving block; 301. Pressing slot; 302. Rotating hole; 303. Rotating rod; 304. Pressing plate; 4. Mounting plate; 401. Electric push rod; 402. Rotating plate; 403. Moving slot; 404. Bidirectional threaded rod; 405. Knob; 406. Support block; 5. Gantry frame; 501. Hydraulic rod; 502. Lifting plate; 503. Cutting blade; 504. Grooving; 505. Connecting rod; 506. Pressing roller; 507. Fixing block; 508. Spring. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0025] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0026] This application provides a precision cutting apparatus for manufacturing plastic film, which will be described in detail below. It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of the embodiments.

[0027] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments. Example

[0028] Please see Figure 1-7 In this embodiment, a precision cutting device for manufacturing plastic film is provided, comprising: a workbench 1, a gantry frame 5 mounted on the top of the workbench 1, two mounting plates 4 mounted on one side of the workbench 1, a moving block 3 on the top of the workbench 1, a lifting plate 502 at the bottom of the gantry frame 5, and a cutting blade 503 connected to the bottom of the lifting plate 502; a leveling assembly mounted on the lifting plate 502, the leveling assembly comprising: a slotting 504, a connecting rod 505, a pressing roller 506, and a spring 508; and a mounting assembly mounted on the mounting plate 4, the mounting assembly comprising: an electric push rod 401, a rotating plate 402, and a support block 406.

[0029] The flattening component allows the plastic film to be flattened and straightened before cutting, effectively preventing wrinkles or uneven stretching that could affect cutting accuracy. The mounting component also allows for the quick fixing of film rolls of different sizes, saving time and improving overall production efficiency. Example

[0030] Based on Embodiment 1, a hydraulic rod 501 is installed on the top of the gantry frame 5. The bottom of the hydraulic rod 501 is connected to the lifting plate 502. A cutting groove 104 corresponding to the position of the cutting blade 503 is opened on the top of the workbench 1. Two slots 504 are opened on both sides of the lifting plate 502. A connecting rod 505 is rotatably connected inside the slot 504. A pressing roller 506 is rotatably connected between the two connecting rods 505 on the same side. Four fixing blocks 507 are connected to the bottom of the lifting plate 502. The fixing blocks 507 correspond to the positions of the slots 504. A spring 508 is connected between the fixing blocks 507 and the connecting rods 505. The length of the connecting rod 505 on the side closer to the mounting plate 4 is greater than the length of the connecting rod 505 on the other side.

[0031] When cutting the film, the hydraulic rod 501 drives the lifting plate 502 to move downward, which in turn drives the cutting blade 503 to cut the film. Before the cutting blade 503 contacts the film, the pressing roller 506 contacts the film first. Since the pressing roller 506 is inclined, when the lifting plate 502 moves downward, it drives one end of the connecting rod 505 to move, which in turn drives the other end of the connecting rod 505 to move the pressing roller 506 outward. The outward movement of the two pressing rollers 506 flattens the film at the cutting part, preventing wrinkles from forming during cutting and affecting the cutting accuracy.

[0032] As the connecting rod 505 moves outward, the spring 508 is stretched and undergoes elastic deformation, accumulating elastic force. After the cutting is completed, the lifting plate 502 moves upward, and the connecting rod 505 returns to its original position under the action of the spring 508. Example

[0033] Based on Embodiment 1, an electric push rod 401 is installed on the top of the mounting plate 4. A rotating plate 402 is connected to one side of the electric push rod 401. A movable groove 403 is opened on the surface of the rotating plate 402. A bidirectional threaded rod 404 is rotatably connected inside the movable groove 403. A knob 405 is connected to one end of the bidirectional threaded rod 404, and the knob 405 is located on the outside of the rotating plate 402. Two symmetrically arranged support blocks 406 are slidably connected inside the movable groove 403. A through hole is opened on the support block 406 that is threaded to the bidirectional threaded rod 404. The bidirectional threaded rod 404 is provided with threads in opposite directions at both ends. The two support blocks 406 are respectively located on the threads at both ends.

[0034] During the preparation for film cutting, the roll with the film can be placed between two rotating plates 402. The rotating plates 402 are moved closer to the roll by the electric push rod 401, so that the two support blocks 406 on the rotating plates 402 are inserted into the middle of the roll. At this time, the roll is just suspended on the support blocks 406. Then, the knob 405 is rotated by the tool, so that the knob 405 drives the bidirectional threaded rod 404 to rotate. The bidirectional threaded rod 404 drives the two support blocks 406 to move under the action of thread engagement. Since the two support blocks 406 are located on the threads at both ends of the bidirectional threaded rod 404, the two support blocks 406 move in opposite directions, so that the two support blocks 406 move away from each other, thereby fixing the roll with the film to facilitate the unwinding of the film by the subsequent roll.

[0035] The two rotating plates 402 and the two support blocks 406 can be used to fix film rolls of different sizes, making it convenient to cut plastic films of different sizes. Example

[0036] Based on Embodiment 1, a movable groove 101 is provided on the top of the workbench 1. A threaded rod 201 is rotatably connected inside the movable groove 101. A servo motor 2 is installed inside the workbench 1. The servo motor 2 is driven and connected to the threaded rod 201. A threaded block 202 is threadedly connected to the outside of the threaded rod 201. A threaded hole 203 is provided on the threaded block 202. The top of the threaded block 202 is connected to the movable block 3. A pressing groove 301 is provided on one side of the movable block 3. A rotating hole 302 is provided on the top of the movable block 3. A rotating rod 303 is threadedly connected inside the rotating hole 302. A pressing plate 304 is rotatably connected to the bottom of the rotating rod 303 through a bearing. Two side plates 102 are installed on the top of the workbench 1. A transmission roller 103 is rotatably connected between the two side plates 102.

[0037] After the roll with the film is fixed, the film on the roll can be passed between the two drive rollers 103. The drive rollers 103 guide the film. Then, one end of the film is pulled into the pressing groove 301. Then, by rotating the rotating rod 303, the rotating rod 303 moves downward under the action of the screw engagement of the rotating hole 302, thereby driving the pressing plate 304 to press down and fix one end of the film. Then, according to the required length of film cutting, the servo motor 2 is started, so that the servo motor 2 drives the threaded rod 201 to rotate. Under the action of the screw engagement of the threaded hole 203, the threaded block 202 and the moving block 3 are moved, thereby pulling the film to the required length, and the cutting work is ready.

[0038] During the cutting process, because the length of the connecting rod 505 on the side closer to the mounting plate 4 is greater than the length of the connecting rod 505 on the other side, the pressing roller 506 on the side closer to the mounting plate 4 comes into contact with the film and presses and pulls the film toward the mounting plate 4. One end of the film is pressed and fixed by the pressing plate 304, thereby straightening and flattening the film between the pressing plate 304 and the pressing roller 506, ensuring the accuracy of the film cutting length. As the lifting plate 502 moves down, another pressing roller 506 comes into contact with the film and presses and straightens the film, and presses and flattens the film near the cutting position. On the one hand, this ensures the cutting accuracy, and on the other hand, it ensures that the cut surface is flat after cutting, avoiding the situation where the cut surface is tilted after cutting, which would require rework later.

[0039] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0040] The above provides a detailed description of a precision cutting device for manufacturing plastic film provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A precision cutting device for manufacturing plastic film, characterized in that, include: A workbench (1) is provided with a gantry frame (5) on top of the workbench (1), two mounting plates (4) are installed on one side of the workbench (1), a moving block (3) is provided on the top of the workbench (1), a lifting plate (502) is provided at the bottom of the gantry frame (5), and a cutting blade (503) is connected to the bottom of the lifting plate (502). A leveling assembly disposed on the lifting plate (502), the leveling assembly comprising: a slot (504), a connecting rod (505), a pressing roller (506), and a spring (508); and The mounting assembly is provided on the mounting plate (4), and the mounting assembly includes: an electric push rod (401), a rotating plate (402), and a support block (406).

2. The precision cutting device for manufacturing plastic film according to claim 1, characterized in that, The top of the gantry (5) is equipped with a hydraulic rod (501), the bottom of the hydraulic rod (501) is connected to the lifting plate (502), and the top of the workbench (1) is provided with a cutting groove (104) corresponding to the position of the cutting blade (503).

3. The precision cutting device for manufacturing plastic film according to claim 1, characterized in that, The lifting plate (502) has two slots (504) on each side. A connecting rod (505) is rotatably connected inside the slot (504). A pressing roller (506) is rotatably connected between the two connecting rods (505) on the same side. Four fixing blocks (507) are connected to the bottom of the lifting plate (502). The fixing blocks (507) correspond to the slots (504). A spring (508) is connected between the fixing blocks (507) and the connecting rods (505). The length of the connecting rod (505) on the side closer to the mounting plate (4) is greater than the length of the connecting rod (505) on the other side.

4. The precision cutting device for manufacturing plastic film according to claim 1, characterized in that, An electric push rod (401) is installed on the top of the mounting plate (4). A rotating plate (402) is connected to one side of the electric push rod (401). A movable groove (403) is opened on the surface of the rotating plate (402). A bidirectional threaded rod (404) is rotatably connected inside the movable groove (403). A knob (405) is connected to one end of the bidirectional threaded rod (404), and the knob (405) is located on the outside of the rotating plate (402).

5. The precision cutting device for manufacturing plastic film according to claim 4, characterized in that, The movable groove (403) has two symmetrically arranged support blocks (406) slidably connected inside, and the support blocks (406) have through holes that are threaded to the bidirectional threaded rod (404). The bidirectional threaded rod (404) has threads with opposite directions at both ends, and the two support blocks (406) are located on the threads at both ends respectively.

6. The precision cutting device for manufacturing plastic film according to claim 1, characterized in that, The workbench (1) has a moving slot (101) on its top. A threaded rod (201) is rotatably connected inside the moving slot (101). A servo motor (2) is installed inside the workbench (1). The servo motor (2) is driven to connect with the threaded rod (201). A threaded block (202) is threaded to the outside of the threaded rod (201). A threaded hole (203) is opened on the threaded block (202). The top of the threaded block (202) is connected to the moving block (3).

7. The precision cutting device for manufacturing plastic film according to claim 6, characterized in that, The movable block (3) has a pressing groove (301) on one side and a rotating hole (302) on the top of the movable block (3). A rotating rod (303) is threaded inside the rotating hole (302). A pressing plate (304) is rotatably connected to the bottom of the rotating rod (303) through a bearing. Two side plates (102) are installed on the top of the workbench (1). A transmission roller (103) is rotatably connected between the two side plates (102).

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