An adjustable plastic film trimming device

Abstract

The utility model discloses an adjustable plastic film trimming device belongs to plastic film processing equipment technical field. It includes support, shell, support plate, first rotation roller and install cutting assembly, adjusting assembly and limiting component on the shell. Adjusting assembly includes by hydraulic cylinder drive, the second rotation roller of up and down removal for the accurate adjustment of plastic film's tension, limiting component includes by carousel drive two -way screw rod, a pair of arc plate of synchronous adjusting interval is used for to the plastic film of different width carries out the quick centering limiting. Plastic film is adjusted and is centered after the tension, and cutting is completed by cutting assembly. The utility model solves the problem that the existing device is poor in adaptability and cutting precision is not high because of fixed structure, has the beneficial effect of convenient adjustment, wide application range, can improve cutting quality and production efficiency significantly.

Description

Technical Field

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

[0002] Plastic film is a widely used basic material in the production of plastic products. To meet the needs of subsequent packaging or lamination processes, rolls of plastic film usually need to be edge-cut to obtain neat edges and precise widths. Plastic film edge-cutting equipment is the key piece of equipment to complete this process.

[0003] Existing conventional plastic film trimming devices typically have their guide rollers and conveyor rollers fixed to the frame, forming a fixed conveying path. However, in actual production, the types of plastic films to be processed are diverse, with varying physical properties such as thickness, elasticity, and extensibility. When using such a fixed trimming device, the fixed conveying path applies almost the same tension to all plastic films with different properties. For some films with good extensibility, this tension is too low, causing wrinkles to appear when the film reaches the cutting station, preventing it from spreading out smoothly; while for some thinner or more brittle films, this tension is too high, causing the film to be overstretched or even torn. Both wrinkles and overstretching severely affect the straightness and dimensional accuracy of the cut edge.

[0004] Furthermore, to accommodate different product specifications, the width of the plastic film rolls to be processed often varies. Many existing edge-cutting devices require manual adjustment of the lateral limit baffles after the machine is stopped when dealing with width variations. This is done by loosening bolts, moving the baffles, and then tightening them again. This process is not only time-consuming and labor-intensive, reducing production efficiency, but the precision of manual adjustment is also difficult to guarantee, often resulting in inaccurate alignment of the plastic film, leading to inconsistent trimming amounts on both sides, material waste, or defective products. Therefore, existing edge-cutting devices generally suffer from poor structural adaptability, making it difficult to conveniently and quickly adjust to adapt to plastic films with different physical properties and size specifications, thus limiting their processing accuracy and production efficiency.

[0005] Therefore, this utility model proposes an adjustable plastic film cutting device to overcome the shortcomings of the prior art. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides an adjustable plastic film cutting device, which aims to improve the problems of low cutting accuracy and narrow application range in the existing plastic film cutting devices due to their fixed structure, which makes it difficult to conveniently adjust the tension of the plastic film and perform precise lateral positioning.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: an adjustable plastic film cutting device, comprising: a bracket, a housing fixed on the bracket; and a support plate, a cutting component, an adjusting component, a first rotating roller, and a limiting component installed on the housing.

[0008] The adjusting assembly includes a second rotating roller that can move up and down, and the limiting assembly has a pair of arc plates with adjustable spacing.

[0009] The support plate is horizontally fixed on the outer shell, and the cutting component is located above the support plate. During operation, the plastic film passes through the first rotating roller and the second rotating roller of the adjusting component in sequence, and then lies flat on the support plate. It is laterally limited from both sides by a pair of arc plates of the limiting component, and finally the cutting component completes the cutting of the plastic film.

[0010] Preferably, the cutting assembly includes a support frame fixed to the housing, a cylinder installed in the support frame, a cutting blade connected to the output end of the cylinder, and a support blade fixedly disposed next to the support plate and cooperating with the cutting blade to perform cutting.

[0011] Preferably, the adjustment assembly includes a fixed frame fixed to the top of the housing, a hydraulic cylinder mounted on the fixed frame, and a connecting frame connected to the output end of the hydraulic cylinder; the second rotating roller is rotatably disposed on the inner wall of the connecting frame, and the hydraulic cylinder drives the second rotating roller to move up and down by driving the connecting frame.

[0012] Furthermore, the adjustment component also includes a limiting block and a limiting plate disposed on the side wall of the fixed frame. The connecting frame is slidably disposed on the inner wall of the limiting block, and the top of the connecting frame can abut against the bottom of the limiting plate, thereby guiding and limiting the movement of the connecting frame.

[0013] Preferably, the limiting component includes a bidirectional screw rotatably mounted on the housing and two movable plates threaded onto the bidirectional screw. The arc plate is fixed to the side wall of the two movable plates respectively, and the arc plate can slide inside the support plate.

[0014] Furthermore, the limiting assembly also includes a turntable connected to the bidirectional screw and a limiting post fixed to the housing parallel to the bidirectional screw, with the moving plate slidably fitted to the outer wall of the limiting post.

[0015] In one specific implementation, the threads at both ends of the bidirectional screw are in opposite directions. When the turntable is rotated, the two moving plates will move synchronously towards or away from each other along their axial direction under the guidance of the limiting post.

[0016] Preferably, the adjustable plastic film cutting device further includes a material carrier plate, which is fixedly connected to the housing and located on the discharge side of the cutting assembly, for receiving the cut plastic film.

[0017] This utility model has the following beneficial effects:

[0018] 1. In this utility model, by setting an adjustment component consisting of a rotating roller driven by a hydraulic cylinder that can move up and down, the problem of fixed conveying path of the cutting device in the prior art, which makes it impossible to adjust the tension according to the extensibility of different plastic films, resulting in wrinkling or excessive stretching of the film and affecting the cutting accuracy, is solved. The technical effect of being able to accurately and conveniently adjust the tension of the plastic film and ensure that different plastic films can be cut flat under the best tension is achieved.

[0019] 2. In this utility model, by setting a limiting component that is driven by a turntable to drive a bidirectional screw, thereby driving a pair of limiting plates to move synchronously towards or away from each other, the problem of low centering efficiency and inaccurate positioning caused by the fact that the existing edge cutting device usually adopts manual adjustment of the two side baffles or structural fixation, is difficult to quickly adapt to plastic films of different widths. This achieves the technical effect of being able to quickly and accurately center and limit plastic films of different widths, thereby improving the applicability and production efficiency of the device. Attached Figure Description

[0020] Figure 1 This is a perspective view of an adjustable plastic film cutting device proposed in this utility model;

[0021] Figure 2 This is a schematic diagram of the outer shell sidewall structure of an adjustable plastic film cutting device proposed in this utility model;

[0022] Figure 3 This is a schematic diagram of the connecting frame sidewall structure of an adjustable plastic film cutting device proposed in this utility model;

[0023] Figure 4 This is a schematic diagram of the top structure of the limiting component of an adjustable plastic film cutting device proposed in this utility model;

[0024] Figure 5 This is an exploded view of the limiting component of an adjustable plastic film cutting device proposed in this utility model.

[0025] Legend:

[0026] 1. Bracket; 2. Housing; 3. Cutting assembly; 301. Cylinder; 302. Support frame; 303. Cutting blade; 304. Support blade; 4. First rotating roller; 5. Adjusting assembly; 501. Hydraulic cylinder; 502. Connecting frame; 503. Limiting block; 504. Limiting plate; 505. Fixing frame; 506. Second rotating roller; 6. Limiting assembly; 601. Turntable; 602. Bidirectional screw; 603. Moving plate; 604. Arc plate; 605. Limiting post; 606. Support plate; 7. Carrier plate. Detailed Implementation

[0027] The technical solutions of the present utility model 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 utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Reference Figures 1-5 The present invention provides an embodiment of an adjustable plastic film cutting device, which aims to solve the problem that existing plastic film cutting devices are not adaptable to plastic films of different materials or widths, and it is difficult to accurately adjust the tension and lateral position, resulting in low cutting accuracy.

[0029] like Figure 1 and Figure 2 As shown, the adjustable plastic film cutting device includes a bracket 1 and a housing 2 fixedly connected to the bracket 1. The bracket 1 provides a stable load-bearing support for the entire device, while the housing 2 serves as an installation platform for all working components.

[0030] Specifically, a support plate 606 is horizontally fixed on the outer shell 2, and the support plate 606 provides a flat work surface for cutting the plastic film; a cutting component 3, an adjusting component 5 and a limiting component 6 are also installed on the outer shell 2; the cutting component 3 is installed on the outer shell 2 and located above the support plate 606, and is used to cut the plastic film located on the support plate 606.

[0031] The adjusting component 5 is installed on the housing 2. The second rotating roller 506 of the adjusting component 5 can change the length of the conveying path of the plastic film by adjusting the height of the second rotating roller 506, thereby achieving precise control of the tension of the plastic film.

[0032] The outer casing 2 is also rotatably connected to a first rotating roller 4. During operation, the plastic film passes sequentially around the first rotating roller 4 and the second rotating roller 506 of the adjusting component 5, and is finally laid flat on the support plate 606 to await cutting. The limiting component 6 is installed on the outer casing 2. The limiting component 6 has a pair of arc plates 604 with a synchronously adjustable spacing. The pair of arc plates 604 are used to clamp and position the plastic film from both sides to achieve precise lateral limiting of plastic films of different widths.

[0033] The cutting assembly 3 includes a support frame 302 fixed to the housing 2. A cylinder 301, which serves as a power source, is installed on the inner wall of the support frame 302. One end of the cutting blade 303 is connected to the output end of the cylinder 301. A support blade 304 is fixedly arranged next to the support plate 606. The cylinder 301 drives the cutting blade 303 to reciprocate. The side wall of the cutting blade 303 slides against the side wall of the support blade 304. The cutting of the plastic film is achieved through the shearing cooperation between the two.

[0034] Please refer to the following carefully. Figure 1 and Figure 3 The adjusting component 5 includes a fixed frame 505 fixed to the top of the outer shell 2. A hydraulic cylinder 501 is mounted on the fixed frame 505. The output end of the hydraulic cylinder 501 is connected to a connecting frame 502. A second rotating roller 506 is rotatably disposed between the inner walls of the connecting frame 502. The hydraulic cylinder 501 drives the connecting frame 502 to move up and down, thereby driving the second rotating roller 506 to move up and down synchronously, thereby changing the tension of the plastic film.

[0035] To ensure the stability of movement, the side wall of the fixed frame 505 is also fixedly connected with a limiting block 503 and a limiting plate 504. The connecting frame 502 is slidably disposed on the inner wall of the limiting block 503, and the top of the connecting frame 502 can abut against the bottom of the limiting plate 504. The movement trajectory and range of the connecting frame 502 are limited by the limiting block 503 and the limiting plate 504.

[0036] The limiting assembly 6 includes a bidirectional screw 602 rotatably mounted on the housing 2, with opposite thread directions at both ends of the bidirectional screw 602. One end of the bidirectional screw 602 is connected to a turntable 601 for manual operation. Two movable plates 603 are threadedly fitted onto the bidirectional screw 602. A guide limiting post 605 is also fixed on the housing 2 parallel to the bidirectional screw 602, and the movable plates 603 are slidably fitted onto the outer wall of the limiting post 605. An arc plate 604 is fixed to the side of the two movable plates 603 facing each other, and the arc plate 604 can slide inside the support plate 606. When the turntable 601 is rotated, the bidirectional screw 602 drives the two movable plates 603 to move synchronously towards or away from each other along the axial direction of the limiting post 605, thereby driving the arc plate 604 to clamp or release the plastic film.

[0037] The limiting assembly 6 also includes a turntable 601 connected to the bidirectional screw 602 and used to drive its rotation, and a limiting post 605 fixed to the housing 2 parallel to the bidirectional screw 602, wherein the moving plate 603 is slidably fitted to the outer wall of the limiting post 605; through the guiding effect of the limiting post 605, it is ensured that the two moving plates 603 will not deflect or shake during the movement, thereby ensuring that the limiting force applied by the arc plate 604 to both sides of the plastic film is uniform and straight.

[0038] The threads at both ends of the bidirectional screw 602 are set to opposite thread directions; when the operator rotates the turntable 601, the rotation of the screw will simultaneously drive the two moving plates 603 threaded on it to move synchronously towards or away from each other along the axial direction of the limiting post 605. This design structure is simple and reliable, and can quickly complete the centering positioning of plastic films of different widths.

[0039] In order to gently contact and guide the plastic film, the arc plate 604 is fixed to the inner side of the movable plate 603 facing each other, and the arc plate 604 has an arc surface for abutting the side edge of the plastic film. This arc surface design can avoid damage to the edge of the plastic film or stress concentration during the limiting process.

[0040] To facilitate the collection of the cut plastic film, the device also includes a carrier plate 7, which is fixedly connected to the housing 2 and located on the discharge side of the cutting assembly 3. The cut plastic film will slide onto the carrier plate 7 for easy collection and processing.

[0041] Working principle: When using the plastic film cutting device, the bracket 1 first supports the outer shell 2, and the outer shell 2 is used to support the internal components. Then, when the plastic film passes through the first rotating roller 4 and the second rotating roller 506, the plastic film will move to the top of the support plate 606 and then be cut by the cutting component 3. The cut plastic film will then be temporarily stored on the top of the carrier plate 7.

[0042] Furthermore, when the cutting component 3 is in use, the cylinder 301 first drives the cutting blade 303 to move, and the side wall of the cutting blade 303 will fit against the side wall of the support blade 304. Then, the plastic film is cut by cutting between the cutting blade 303 and the support blade 304. Then, the cylinder 301 is fixed to the inner wall of the support frame 302, and the bottom of the support frame 302 is fixed to the side wall of the outer shell 2.

[0043] Subsequently, when adjusting the plastic film tension using the adjusting component 5, the connecting frame 502 is first moved by the output end of the hydraulic cylinder 501. During the movement of the connecting frame 502, it slides on the inner wall of the limiting block 503, and the limiting block 503 limits the connecting frame 502. Then, during the movement of the connecting frame 502, the second rotating roller 506 on the inner wall will be driven to move up and down. At the same time, during the movement of the connecting frame 502, its top will abut against the bottom of the limiting plate 504, and the side wall of the limiting plate 504 is fixed to the side wall of the fixed frame 505. Meanwhile, the bottom of the fixed frame 505 is fixed to the top of the outer shell 2, thus achieving the effect of adjusting the plastic film tension.

[0044] Subsequently, when the limiting component 6 limits the plastic film, the turntable 601 is rotated first. The force on the turntable 601 will drive the bidirectional screw 602 to rotate. Then, during the rotation of the bidirectional screw 602, the moving plate 603 on the outer wall will be driven to rotate. When the moving plate 603 rotates, it will drive the arc plate 604 on the side wall to slide inside the support plate 606. At the same time, when the moving plate 603 is under force, it will be driven to slide on the outer wall of the limiting post 605, and the limiting post 605 limits the moving plate 603. Meanwhile, the arc plate 604 is designed with an arc shape inside, which achieves the effect of limiting the plastic film.

Claims

1. An adjustable plastic film edging device comprising: The bracket (1) and the outer shell (2) fixed to the bracket (1) are characterized in that they further include: A support plate (606) is horizontally fixed to the outer shell (2); a cutting assembly (3) is installed on the outer shell (2) and located above the support plate (606) for cutting the plastic film on the support plate (606); An adjustment assembly (5) is mounted on the housing (2), and the adjustment assembly (5) includes a second rotating roller (506) that can move up and down; The first rotating roller (4) is rotatably connected to the outer shell (2), and the plastic film is laid on the support plate (606) after passing through the first rotating roller (4) and the second rotating roller (506) in sequence; A limiting component (6) is installed on the housing (2). The limiting component (6) has a pair of arc plates (604) with adjustable spacing. The arc plates (604) are used to laterally limit the plastic film on the support plate (606).

2. The adjustable plastic film edger of claim 1, wherein, The cutting assembly (3) includes: a support frame (302) fixed on the outer shell (2); a cylinder (301) installed in the support frame (302); a cutting blade (303) with its output end connected to the cylinder (301); and a support blade (304) fixedly disposed next to the support plate (606) and cooperating with the cutting blade (303) to perform cutting.

3. The adjustable plastic film edger of claim 2, wherein, The sidewall of the cutting blade (303) slides in conjunction with the sidewall of the support blade (304).

4. The adjustable plastic film edger of claim 1, wherein, The adjustment component (5) includes: a fixed frame (505) fixed to the top of the outer shell (2); a hydraulic cylinder (501) mounted on the fixed frame (505); and a connecting frame (502) connected to the output end of the hydraulic cylinder (501). The second rotating roller (506) is rotatably disposed on the inner wall of the connecting frame (502). The hydraulic cylinder (501) drives the connecting frame (502) to move the second rotating roller (506) up and down to adjust the tension of the plastic film.

5. The adjustable plastic film edger of claim 4, wherein, The adjustment component (5) further includes a limiting block (503) and a limiting plate (504) disposed on the side wall of the fixed frame (505); the connecting frame (502) is slidably disposed on the inner wall of the limiting block (503), and the top of the connecting frame (502) can abut against the bottom of the limiting plate (504).

6. The adjustable plastic film edger of claim 1, wherein, The limiting component (6) includes: a bidirectional screw (602) rotatably disposed on the outer shell (2); two movable plates (603) threadedly engaged with the bidirectional screw (602); and arc plates (604) respectively fixed to the side walls of the two movable plates (603), and the arc plates (604) can slide inside the support plate (606).

7. The adjustable plastic film edger of claim 6, wherein, The arc plate (604) has an arc surface for abutting the side edge of the plastic film.

8. The adjustable plastic film cutting device according to claim 6, characterized in that, The limiting component (6) further includes: a turntable (601) connected to the bidirectional screw (602) and used to drive its rotation; and a limiting post (605) fixed to the housing (2) parallel to the bidirectional screw (602), wherein the moving plate (603) is slidably fitted to the outer wall of the limiting post (605).

9. The adjustable plastic film cutting device according to claim 8, characterized in that, The two ends of the bidirectional screw (602) have opposite thread directions. When the turntable (601) is rotated, the two moving plates (603) move synchronously towards each other or away from each other along the axial direction of the limiting post (605).

10. The adjustable plastic film cutting device according to claim 1, characterized in that, It also includes a material carrier plate (7), which is fixedly connected to the housing (2) and located on the discharge side of the cutting assembly (3).

Images