Cutting device for PVC film production

Abstract

This utility model discloses a cutting device for PVC film production, including a frame; a table is fixedly installed on the top of the frame, wherein a rectangular placement groove is opened on the top right side of the table, and a feeding hopper is fixedly installed in the placement groove; the feeding hopper is an inverted trapezoidal shell, with openings on the top and right side; two adjusting guide rails are also fixedly installed on the top of the frame along the left and right direction, and the two adjusting guide rails are respectively located on the front and rear sides of the placement groove; a film feeding device, a film cutting device, and a film drawing device are movably installed on the adjusting guide rails from left to right; this utility model, through the cooperation of the film feeding device and the film drawing device, can redraw the film after it has been cut by the film cutting device, so that it can be cut again by the film cutting device, resulting in good continuity of the cutting operation.

Description

Technical Field

[0001] This utility model relates to the field of cutting equipment, specifically a cutting device for PVC film production. Background Technology

[0002] PVC's main component is polyvinyl chloride, which is a slightly yellowish, translucent substance with a glossy appearance. Its transparency is better than polyethylene and polypropylene, but worse than polystyrene. Depending on the amount of additives used, it is classified as soft or rigid PVC. Soft PVC products are flexible and tough, with a sticky feel, while rigid PVC products have a harderness than low-density polyethylene but lower than polypropylene, and may exhibit whitening at bending points.

[0003] For example, the patent with authorization announcement number CN217861416U discloses a cutting device for PVC film processing, which relates to the technical field of PVC product processing equipment. It includes a tooling plate, a table fixedly arranged on the top surface of the tooling plate, conveying rollers arranged on the front and rear sides of the table, a cutting groove opened in the middle of the table, and a cutting mechanism fixedly arranged on the inner side of the cutting groove.

[0004] The scissor structure formed by the upper and lower blades of the aforementioned patent cuts and segments the film from the side. It requires a short blade length and small volume, which is conducive to high-speed cutting. The lateral telescopic cutting method fundamentally ensures complete film cutting. After the blade moves, the film can be completely separated, and there is little risk of adhesion. In case of blade edge damage, the threaded rod can be rotated to bring the good blade edge into contact with the film for cutting. This not only makes maintenance operations quick and minimizes the impact on equipment production, but also makes full use of the blade edge and saves production materials. However, the disadvantage of the aforementioned patent is that after the film is cut, the end of the film needs to be manually pulled out from the blade, which is very inconvenient.

[0005] Therefore, it is necessary to improve such a structure to overcome the above-mentioned defects. Utility Model Content

[0006] The purpose of this invention is to provide a cutting device for PVC film production to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A PVC film production cutting device includes a frame; a table is fixedly installed on the top of the frame, and a rectangular placement slot is opened on the top right side of the table, where a feeding hopper is fixedly installed; the feeding hopper is an inverted trapezoidal shell with openings on the top and right side; two adjusting guide rails are also fixedly installed on the top of the frame along the left-right direction, and the two adjusting guide rails are located on the front and rear sides of the placement slot respectively; a film feeding device, a film cutting device, and a film drawing device are movably installed on the adjusting guide rails from left to right; the film feeding device includes a lower guide plate and an upper guide plate, with a gap between the lower guide plate and the upper guide plate for film passage, and two sets of the lower guide plate and the upper guide plate are provided and symmetrically arranged front and back.

[0009] Furthermore, the film cutting device includes a cutting mounting base; a lower blade holder is fixedly mounted on the top of the cutting mounting base, and a lower cutting blade is fixedly mounted on the top right side of the lower blade holder; guide shafts are vertically fixedly mounted at both ends of the lower blade holder, an upper blade holder is slidably mounted on the guide shafts, and an upper cutting blade is fixedly mounted on the right side of the upper blade holder; a top plate is fixedly mounted on the top of the guide shafts, and a cutting cylinder is fixedly mounted on the top plate, with the output shaft of the cutting cylinder passing through the top plate and fixedly connected to the top of the upper blade holder.

[0010] Furthermore, the cutting mounting base is located above the adjusting guide rail, and the bottom front and rear ends of the cutting mounting base are fixedly installed on the top of the table panel; it is slidably mounted on the adjusting guide rail by a slider.

[0011] Furthermore, the film extraction device includes an extraction sliding seat, which is slidably mounted on the top of the guide rail via a slider; an extraction cylinder mounting seat is fixedly installed on the top of the extraction sliding seat, and at least two sets of pneumatic fingers are fixedly installed on the top of the extraction cylinder mounting seat, with auxiliary clamping plates fixedly installed on the grippers of the pneumatic fingers; when the two grippers of the pneumatic fingers move, the two auxiliary clamping plates approach each other, thereby clamping the film.

[0012] Furthermore, the thin film extraction device also includes a set of moving drive devices, which include a drive motor and a ball screw. The drive motor is fixedly installed on the top of the table panel, and the ball screw is rotatably mounted on the top of the table panel through a bearing and a bearing seat. The output shaft of the drive motor is connected to one end of the ball screw through a coupling. The ball screw nut is fixedly installed in a nut seat, and the nut seat is fixedly installed on the right rear end of the extraction sliding seat through a seat connecting plate.

[0013] Furthermore, the film feeding device also includes a feeding slide seat; the feeding slide seat is slidably mounted on the top of the slide rail by a slider, and a feeding cylinder is fixedly installed on the top left end of the platform panel. The output shaft of the feeding cylinder is fixedly connected to the left side of the feeding slide seat, and the feeding cylinder can drive the feeding slide seat to move along the slide rail; a guide plate mounting plate is fixedly installed on the top of the feeding slide seat, a lower guide plate is fixedly installed on the bottom inner side of the guide plate mounting plate, and an upper clamping cylinder is fixedly installed on the top inner side of the guide plate mounting plate. The output shaft of the upper clamping cylinder is fixedly connected to the top of the upper guide plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention, through the cooperation of a film feeding device and a film drawing device, can draw out the film after it has been cut by the film cutting device, so that it can be cut again by the film cutting device, thus ensuring good continuity of the cutting operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a cutting device used in PVC film production.

[0017] Figure 2 This is a schematic diagram of the cutting device used in PVC film production from another angle.

[0018] Figure 3 This is a schematic diagram of the film feeding device in a cutting device for PVC film production.

[0019] Figure 4 This is a schematic diagram of the film cutting device in a PVC film production cutting apparatus.

[0020] Figure 5 This is a schematic diagram of the film extraction device in a cutting apparatus for PVC film production. Detailed Implementation

[0021] 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 only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0022] Please see Figure 1-5 A cutting device for PVC film production includes a frame 1; a table panel 101 is fixedly installed on the top of the frame 1, wherein a rectangular placement groove 102 is opened on the top right side of the table panel 101, and a feeding hopper 103 is fixedly installed in the placement groove 102; the feeding hopper 103 is an inverted trapezoidal shell, and the top and right side of the feeding hopper 103 are provided with openings.

[0023] Two adjustable guide rails 2 are also fixedly installed on the top of the frame 1 along the left and right direction. The two adjustable guide rails 2 are located on the front and rear sides of the placement slot 103 respectively.

[0024] The adjusting guide rail 2 is movably mounted from left to right with a film feeding device 3, a film cutting device 4, and a film drawing device 5.

[0025] like Figure 4 As shown, specifically, the film cutting device 4 includes a cutting mounting base 401; a lower blade holder 402 is fixedly mounted on the top of the cutting mounting base 401, and a lower cutter 403 is fixedly mounted on the top right side of the lower blade holder 402; guide shafts 404 are vertically fixedly mounted at both ends of the lower blade holder 402, an upper blade holder 405 is slidably mounted on the guide shaft 404, and an upper cutter 406 is fixedly mounted on the right side of the upper blade holder 405; a top plate 407 is fixedly mounted on the top of the guide shaft 404, and a cutter cylinder 408 is fixedly mounted on the top plate 407; the output shaft of the cutter cylinder 408 passes through the top plate 407 and is fixedly connected to the top of the upper blade holder 405.

[0026] The upper cutter 406 and the lower cutter 403 are configured to cut the passing film. When the film needs to be cut, the cutter cylinder 408 extends and drives the upper cutter holder 405 to move down together with the upper cutter 406 to cut the passing film. The cut film falls into the feed hopper 103.

[0027] The cutting mounting base 401 is located above the adjusting guide rail 2, and its bottom front and rear ends are fixedly mounted on the top of the table panel 101; it is slidably mounted on the adjusting guide rail 2 via a slider.

[0028] like Figure 3 As shown, the film feeding device 3 includes a lower guide plate 301 and an upper guide plate 302. A gap is left between the lower guide plate 301 and the upper guide plate 302 for the film to pass through. The lower guide plate 301 and the upper guide plate 302 are provided in two sets and are arranged symmetrically front and back.

[0029] The film extraction device 5 includes an extraction sliding seat 501, which is slidably mounted on the top of the guide rail 2 via a slider; an extraction cylinder mounting seat 502 is fixedly installed on the top of the extraction sliding seat 501, and at least two sets of pneumatic fingers 503 are fixedly installed on the top of the extraction cylinder mounting seat 502, with auxiliary clamping plates 504 fixedly installed on the grippers of the pneumatic fingers 503; when the two grippers of the pneumatic fingers 503 move, the two auxiliary clamping plates 504 approach each other, thereby clamping the film;

[0030] like Figure 5 As shown, the film extraction device 5 also includes a set of moving drive devices 510, which includes a drive motor 511 and a ball screw 512. The drive motor 511 is fixedly installed on the top of the table panel 101, and the screw of the ball screw 512 is rotatably mounted on the top of the table panel 101 through a bearing and a bearing seat. The output shaft of the drive motor 511 is connected to one end of the screw of the ball screw 512 through a coupling. The screw nut of the ball screw 512 is fixedly installed in the nut seat 513, and the nut seat 513 is fixedly installed on the right rear end of the extraction sliding seat 501 through a seat connecting plate 514.

[0031] The drive motor 511 moves the lead-out sliding seat 501 along the guide rail 2 via the ball screw 512;

[0032] When this solution is used, the drive motor 511 moves the lead-out sliding seat 501 to the left and approaches the film through the ball screw 512. The pneumatic finger 503 clamps the right end of the film. The drive motor 511 moves the lead-out sliding seat 501 to the right through the ball screw 512 and pulls out a section of film. Then the film cutting device 4 cuts the film.

[0033] Since the right end of the film to be cut is aligned with the cutting edge of the lower cutter after the film is cut, the pneumatic finger 503 cannot hold the film well at this time.

[0034] Therefore, in this solution, the film feeding device 3 also includes a feeding slide seat 303; the feeding slide seat 303 is slidably disposed on the top of the slide rail 2 by a slider, and a feeding cylinder 304 is fixedly installed on the top left end of the platform 101. The output shaft of the feeding cylinder 304 is fixedly connected to the left side of the feeding slide seat 303, and the feeding cylinder 304 can drive the feeding slide seat 303 to move along the slide rail.

[0035] A guide plate mounting plate 305 is fixedly installed on the top of the feed sliding seat 303. A lower guide plate 301 is fixedly installed on the bottom inner side of the guide plate mounting plate 305. An upper clamping cylinder 306 is fixedly installed on the top inner side of the guide plate mounting plate 305. The output shaft of the upper clamping cylinder 306 is fixedly connected to the top of the upper guide plate 302.

[0036] When the film pulling device 5 pulls the film, the gap between the lower guide plate 301 and the upper guide plate 302 is used to guide the film's movement; after the film is cut;

[0037] At this time, the upper clamping cylinder 306 moves, causing the upper guide plate 302 to move downward. The upper guide plate 302 and the lower guide plate 301 clamp the film. At this time, the feeding cylinder 304 can drive the feeding slide seat 303 to move to the right. The film clamped by the upper guide plate 302 and the lower guide plate 301 also moves to the right. At this time, the right end of the film to be cut passes through the cutting edge of the lower cutter. The right end of the film "exposes" so that the pneumatic finger 503 of the film lead-out device 5 can clamp the film. After the right end of the film is clamped, the upper clamping cylinder 306 moves, causing the upper guide plate 302 to move upward. The upper guide plate 302 and the lower guide plate 301 release the clamped film, and a gap is still left between the upper guide plate 302 and the lower guide plate 301 to guide the film through. The feeding cylinder 304 reverses its movement, causing the feeding slide seat 303 to move to the left and reset.

[0038] It is worth noting that in this solution, the film being cut is a rigid PVC film, meaning that the film needs to be at least stiff enough so that it can still be held by the pneumatic fingers of the film extraction device 5 after passing through a certain distance of the film cutting device 4; at least it will not cause the film to droop at a 90-degree angle immediately after passing through the lower cutter seat, thus preventing the pneumatic fingers of the film extraction device 5 from being able to hold it.

[0039] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component 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. Furthermore, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, terms such as "set" and "connect" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A cutting device for PVC film production, comprising a frame; characterized in that, A platform is fixedly installed on the top of the frame, and a rectangular placement slot is opened on the top right side of the platform, where a feeding hopper is fixedly installed. The feeding hopper is an inverted trapezoidal shell with openings on the top and right side. Two adjusting guide rails are also fixedly installed on the top of the frame along the left-right direction, and the two adjusting guide rails are located on the front and rear sides of the placement slot, respectively. A film feeding device, a film cutting device, and a film drawing device are movably installed on the adjusting guide rails from left to right. The film feeding device includes a lower guide plate and an upper guide plate, with a gap between the lower guide plate and the upper guide plate for film passage. There are two sets of lower guide plates and upper guide plates, which are symmetrically arranged front and back.

2. The cutting device for PVC film production according to claim 1, characterized in that, The film cutting device includes a cutting mounting base; a lower blade holder is fixedly mounted on the top of the cutting mounting base, and a lower cutting blade is fixedly mounted on the top right side of the lower blade holder; guide shafts are vertically fixedly mounted at both ends of the lower blade holder, an upper blade holder is slidably mounted on the guide shafts, and an upper cutting blade is fixedly mounted on the right side of the upper blade holder; a top plate is fixedly mounted on the top of the guide shafts, and a cutting cylinder is fixedly mounted on the top plate, with the output shaft of the cutting cylinder passing through the top plate and fixedly connected to the top of the upper blade holder.

3. The cutting device for PVC film production according to claim 2, characterized in that, The cutting mounting base is located above the adjusting guide rail, and the bottom front and rear ends of the cutting mounting base are fixedly installed on the top of the table panel; it is slidably mounted on the adjusting guide rail by a slider.

4. The cutting device for PVC film production according to claim 1, characterized in that, The film extraction device includes an extraction sliding seat, which is slidably mounted on the top of the guide rail via a slider; an extraction cylinder mounting seat is fixedly installed on the top of the extraction sliding seat, and at least two sets of pneumatic fingers are fixedly installed on the top of the extraction cylinder mounting seat, with auxiliary clamping plates fixedly installed on the grippers of the pneumatic fingers; when the two grippers of the pneumatic fingers move, the two auxiliary clamping plates approach each other, thereby clamping the film.

5. The cutting device for PVC film production according to claim 4, characterized in that, The thin film extraction device also includes a set of moving drive devices, which include a drive motor and a ball screw. The drive motor is fixedly installed on the top of the table panel, and the ball screw is rotatably mounted on the top of the table panel through a bearing and a bearing seat. The output shaft of the drive motor is connected to one end of the ball screw through a coupling. The ball screw nut is fixedly installed in a nut seat, and the nut seat is fixedly installed on the right rear end of the extraction sliding seat through a seat connecting plate.

6. The cutting device for PVC film production according to claim 1, characterized in that, The film feeding device also includes a feeding slide seat; the feeding slide seat is slidably mounted on the top of the slide rail by a slider, and a feeding cylinder is fixedly installed on the top left end of the platform. The output shaft of the feeding cylinder is fixedly connected to the left side of the feeding slide seat, and the feeding cylinder can drive the feeding slide seat to move along the slide rail; a guide plate mounting plate is fixedly installed on the top of the feeding slide seat, a lower guide plate is fixedly installed on the bottom inner side of the guide plate mounting plate, and an upper clamping cylinder is fixedly installed on the top inner side of the guide plate mounting plate. The output shaft of the upper clamping cylinder is fixedly connected to the top of the upper guide plate.

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