Edge cutting mechanism for plastic film production

Abstract

This utility model relates to a trimming mechanism for plastic film production, including a trimming device; a symmetrically arranged support top plate is fixedly connected above the trimming device, a guide roller is rotatably connected to one side of the support top plate, and a film is arranged on the outer side of the guide roller; a vertically arranged hydraulic rod is fixedly connected to the other side of the support top plate, and a trimming mechanism is fixedly connected to the free end of the hydraulic rod; sliding sleeves are fixedly connected to both sides of the trimming mechanism, and guide rails are slidably connected to the other side of each sliding sleeve; compared with the prior art, the beneficial effects of this utility model are: when cutting the plastic film, its lower pressure plate is in pre-contact with the plastic film to achieve stable extrusion and ensure its flatness; the hydraulic rod is then activated, and the hydraulic rod drives the trimming blade to continue to move downward, achieving precise cutting of the plastic film; after cutting, the trimming blade is pre-separated from the plastic film to avoid the trimming blade moving the plastic film and affecting the conveying of the plastic film.

Description

Technical Field

[0001] This utility model relates to the field of plastic film processing, and in particular to a trimming mechanism for plastic film production. Background Technology

[0002] Plastic film refers to films made of polyurethane, polyethylene, polypropylene, polystyrene, and other resin materials, and has a wide range of applications. There are various methods for forming and processing plastic films, such as calendering, casting, blow molding, and biaxial stretching. During the production process, after forming, the edges of the plastic film are often trimmed, and it is rolled into a tube for easy storage and transportation.

[0003] When cutting plastic film, the traditional cutting method involves the cutting blades moving directly downwards to contact the film for cutting. During the cutting process, because plastic film is relatively light, the ends of the plastic film are easily pulled up when the cutting blades return to their original position, affecting the continued feeding of the plastic film. Furthermore, the unevenness of the plastic film below the cutting blade during cutting also affects the cutting quality. Therefore, to address the above problems, a cutting mechanism for plastic film production is proposed. Utility Model Content

[0004] In view of the above-mentioned problems in the prior art, the main purpose of this utility model is to provide a trimming mechanism for plastic film production. When cutting plastic film, the lower pressure plate is in pre-contact with the plastic film to achieve stable extrusion and ensure its flatness. The hydraulic rod drives the trimming knife to continue to move downward, thereby achieving precise cutting of the plastic film.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a trimming mechanism for plastic film production, including trimming equipment; The top of the trimming equipment is fixedly connected to a symmetrically arranged support plate. A guide roller is rotatably connected to one side of the upper part of the support plate, and a film is provided on the outside of the guide roller. A vertically installed hydraulic rod is fixedly connected to the other side above the supporting top plate. A trimming mechanism is fixedly connected to the free end of the hydraulic rod. Sliding sleeves are fixedly connected to both sides of the trimming mechanism. Guide rails are slidably connected to the other side of the sliding sleeves. The outer side of the guide rails is fixedly connected to the supporting top plate.

[0006] Furthermore, a lower pressure plate is fixedly connected to the bottom of the sliding sleeve, and a cutting groove is provided in the middle of the lower pressure plate.

[0007] Furthermore, the trimming mechanism includes a trimming blade that is fixedly connected to the top of a hydraulic rod. The trimming blade has strip grooves on both sides, and a return spring is installed in the strip groove. One end of the return spring is fixedly connected to the trimming blade, and the other end of the return spring is fixedly connected to a fixing plate. The other end of the fixing plate is fixedly connected to a sliding sleeve.

[0008] Furthermore, the fixing plate is slidably connected to the cutting blade via a strip groove.

[0009] Traditional cutting methods for plastic film involve the cutting blades moving directly downwards to contact the film for cutting. During this process, due to the light weight of the plastic film, the ends are easily pulled upwards when the cutting blades return to their original position, affecting subsequent film feeding. Furthermore, unevenness of the film below the cutting blade also affects the cutting quality. In this new method, power is connected, and sliding sleeves with pressure plates at their bottom are installed on both sides of the cutting mechanism. When cutting the plastic film, the pressure plates are in pre-contact with the film to achieve stable compression and ensure flatness. The hydraulic rod is then activated, driving the cutting blade downwards for precise cutting. After cutting, the cutting blade is pre-separated from the film to prevent it from moving and affecting film feeding.

[0010] Furthermore, the active conveying mechanism includes a fixed frame that is fixedly connected to the supporting top plate, a motor that is fixedly connected to the rear side of the fixed frame, a rotating shaft that is fixedly connected to the end of the drive shaft of the motor, and the other end of the rotating shaft that is rotatably connected to the fixed frame. A rotating roller is fixedly connected to the outside of the rotating shaft.

[0011] Furthermore, a friction layer is fixedly connected to the outer side of the rotating roller.

[0012] Furthermore, a guide plate is fixedly connected to one side of the fixed frame, and the bottom of the guide plate is set with an inclined surface.

[0013] An active conveying mechanism is also provided on one side of the supporting top plate. After the plastic film is cut, the motor is started to drive the rotating shaft to rotate. The rotating shaft drives the outer rotating roller and friction layer to rotate. At this time, the friction layer contacts the plastic film and actively drives it to move. The guide plate guides the plastic film to ensure its stable conveying.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. By setting sliding sleeves on both sides of the trimming mechanism and setting a pressure plate at the bottom of the sliding sleeves, when cutting the plastic film, the pressure plate is in contact with the plastic film in advance to achieve stable extrusion and ensure its flatness. Then, the hydraulic rod is started, which drives the trimming knife to continue to move down, thereby achieving precise cutting of the plastic film. After the cutting is completed, the trimming knife is separated from the plastic film in advance to avoid the trimming knife moving the plastic film and affecting the conveying of the plastic film. 2. An active conveying mechanism is also provided on one side of the supporting top plate. After the plastic film is cut, the motor is started to drive the rotating shaft to rotate. The rotating shaft drives the outer rotating roller and friction layer to rotate. At this time, the friction layer contacts the plastic film and actively drives it to move. The guide plate guides the plastic film to ensure stable conveying. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the trimming mechanism of this utility model; Figure 3 For the present utility model Figure 2 A schematic diagram of the structure at point A; Figure 4 This is a schematic diagram of the active conveying mechanism of this utility model.

[0016] Legend: 1. Trimming equipment; 2. Supporting top plate; 3. Guide roller; 4. Film; 5. Hydraulic rod; 6. Trimming mechanism; 601. Trimming knife; 602. Return spring; 603. Fixing plate; 7. Active conveying mechanism; 701. Motor; 702. Fixing frame; 703. Rotating shaft; 704. Rotating roller; 705. Friction layer; 706. Guide plate; 8. Guide rail; 9. Sliding sleeve; 10. Lower pressure plate. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0018] like Figure 1-4 As shown, a trimming mechanism for plastic film production includes trimming equipment 1; A symmetrically arranged support top plate 2 is fixedly connected above the trimming equipment 1. A guide roller 3 is rotatably connected to one side of the upper part of the support top plate 2. A film 4 is provided on the outer side of the guide roller 3. A vertically arranged hydraulic rod 5 is fixedly connected to the other side above the supporting top plate 2. A trimming mechanism 6 is fixedly connected to the free end of the hydraulic rod 5. Sliding sleeves 9 are fixedly connected to both sides of the trimming mechanism 6. Guide rails 8 are slidably connected to the other side of the sliding sleeves 9. The outer side of the guide rails 8 is fixedly connected to the supporting top plate 2.

[0019] The bottom of the sliding sleeve 9 is also fixedly connected to a lower pressure plate 10, and a cutting groove is provided in the middle of the lower pressure plate 10.

[0020] The trimming mechanism 6 includes a trimming blade 601 whose top is fixedly connected to the hydraulic rod 5. The trimming blade 601 has strip grooves on both sides, and a return spring 602 is provided in the strip grooves. One end of the return spring 602 is fixedly connected to the trimming blade 601, and the other end of the return spring 602 is fixedly connected to a fixing plate 603. The other end of the fixing plate 603 is fixedly connected to the sliding sleeve 9.

[0021] The fixing plate 603 is slidably connected to the cutting blade 601 through a strip groove.

[0022] When cutting plastic film, the traditional cutting method involves the cutting blades moving directly downwards to contact the film for cutting. During the cutting process, due to the light weight of the plastic film, the ends of the plastic film are easily pulled upwards when the cutting blades return to their original position, affecting the continued feeding of the plastic film. Furthermore, uneven plastic film below the cutting blade during cutting also affects the cutting quality. When in use, the power is turned on, and sliding sleeves 9 are set on both sides of the edge trimming mechanism 6, with a pressure plate 10 at the bottom of the sliding sleeves 9. When cutting the plastic film, the pressure plate 10 is in contact with the plastic film in advance to achieve stable compression and ensure its flatness. The hydraulic rod 5 is then activated, which drives the edge trimming blade 601 to continue moving downwards, thereby achieving precise cutting of the plastic film. After cutting, the edge trimming blade 601 is separated from the plastic film in advance to prevent the edge trimming blade 601 from moving the plastic film and affecting the conveying of the plastic film. Also includes the following: When the trimming blade 601 moves upward, the fixed plate 603 is pressed downward by the return spring 602. The fixed plate 603 drives the sliding sleeves 9 on both sides to move downward, delaying the separation time between the lower pressure plate 10 and the plastic film. This ensures that the trimming blade 601 separates from the plastic film first. Since the bottom of the lower pressure plate 10 is set in a flat position, even if the plastic film moves upward, it will not be located on the side of the lower pressure plate 10 close to the rotating conveying mechanism 7 because the plastic film is located at the bottom of the lower pressure plate 10, thus ensuring stable conveying of the plastic film.

[0023] The active conveying mechanism 7 includes a fixed frame 702 that is fixedly connected to the supporting top plate 2. A motor 701 is fixedly connected to the rear side of the fixed frame 702. A rotating shaft 703 is fixedly connected to the end of the drive shaft of the motor 701. The other end of the rotating shaft 703 is rotatably connected to the fixed frame 702. A rotating roller 704 is fixedly connected to the outer side of the rotating shaft 703.

[0024] A friction layer 705 is also fixedly connected to the outer side of the rotating roller 704.

[0025] A guide plate 706 is also fixedly connected to one side of the fixed frame 702, and the bottom of the guide plate 706 is set with an inclined surface.

[0026] An active conveying mechanism 7 is also provided on one side of the supporting top plate 2. After the plastic film is cut, the starting motor 701 drives the rotating shaft 703 to rotate. The rotating shaft 703 drives the outer rotating roller 704 and friction layer 705 to rotate. At this time, the friction layer 705 contacts the plastic film and actively drives it to move. The guide plate 706 serves to guide the plastic film and ensure its stable conveying. Also includes the following: The presence of the friction layer 705 ensures that the plastic film is squeezed and conveyed. A guide plate 706 is also provided, with its bottom inclined. This guide plate 706 can guide the plastic film, ensuring stable conveying and subsequent cutting quality.

[0027] Finally, it should be noted that the above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, 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 or all of the technical features therein. Such 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 utility model.

Claims

1. A trimming mechanism for plastic film production, comprising trimming equipment (1), characterized in that: The trimming device (1) is fixedly connected to a symmetrically arranged support top plate (2), and a guide roller (3) is rotatably connected to one side of the support top plate (2). A film (4) is provided on the outside of the guide roller (3). A vertically arranged hydraulic rod (5) is fixedly connected to the other side above the supporting top plate (2). A trimming mechanism (6) is fixedly connected to the free end of the hydraulic rod (5). Sliding sleeves (9) are fixedly connected to both sides of the trimming mechanism (6). A guide rail (8) is slidably connected to the other side of the sliding sleeve (9). The outer side of the guide rail (8) is fixedly connected to the supporting top plate (2).

2. The edge-trimming mechanism for plastic film production according to claim 1, characterized in that: The bottom of the sliding sleeve (9) is also fixedly connected to a lower pressure plate (10), and a cutting groove is provided in the middle of the lower pressure plate (10).

3. The edge-trimming mechanism for plastic film production according to claim 1, characterized in that: The trimming mechanism (6) includes a trimming blade (601) whose top is fixedly connected to a hydraulic rod (5). The trimming blade (601) has strip grooves on both sides, and a return spring (602) is provided in the strip groove. One end of the return spring (602) is fixedly connected to the trimming blade (601), and the other end of the return spring (602) is fixedly connected to a fixing plate (603). The other end of the fixing plate (603) is fixedly connected to a sliding sleeve (9).

4. The edge-trimming mechanism for plastic film production according to claim 3, characterized in that: The fixing plate (603) is slidably connected to the cutting blade (601) through a strip groove.

5. The edge-trimming mechanism for plastic film production according to claim 1, characterized in that: It also includes an active conveying mechanism (7), which includes a fixed frame (702) fixedly connected to the supporting top plate (2), a motor (701) fixedly connected to the rear side of the fixed frame (702), a rotating shaft (703) fixedly connected to the end of the drive shaft of the motor (701), and the other end of the rotating shaft (703) rotatably connected to the fixed frame (702). A rotating roller (704) is fixedly connected to the outside of the rotating shaft (703).

6. The edge-trimming mechanism for plastic film production according to claim 5, characterized in that: A friction layer (705) is also fixedly connected to the outer side of the rotating roller (704).

7. The edge-trimming mechanism for plastic film production according to claim 5, characterized in that: A guide plate (706) is also fixedly connected to one side of the fixed frame (702), and the bottom of the guide plate (706) is set with an inclined surface.

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