Cutting device for PE film processing

Abstract

The invention discloses a cutting device for PE film processing, which is characterized in that a rack is arranged on the front side of an unreeling machine, a plurality of uniformly distributed guide rollers are rotatably mounted above the rack through bearings, a slitting device is mounted on the front side of the upper part of the rack, and a guide part and a conveying structure are sequentially mounted on the front side of the rack from top to bottom; a mounting cover shell is mounted below the front side of the rack through screws, cutting covers are mounted on the left side and the right side in the mounting cover shell correspondingly, a cutting structure and a clamping structure are mounted on each cutting cover, and a driving part is mounted between the two cutting covers; the two cutting covers are arranged on the front side of the rack, each cutting cover is provided with the corresponding cutting structure, the cutting structures can directly cut waste generated after the pe film is slit, and the waste cut into fragments can be directly collected for secondary machining through a mounting cover shell and an induced draft fan which are arranged in a matched mode; and the waste recovery efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of PE film processing and recycling technology, and in particular to a cutting device for PE film processing. Background Technology

[0002] PE film, or polyethylene film, has the advantages of strong moisture resistance and low moisture permeability. During use, it is typically used to cover the surface of finished parts to prevent scratches. After production, the sides of PE film usually need to be cut and trimmed. The cut PE film waste can be recycled. After being cut into fragments, it can be crushed, washed, and directly melted into raw materials for re-extrusion molding. Currently, after cutting the sides of the PE film, the resulting PE film waste is generally either rolled up by a rewinding machine or simply scattered and piled up on the side of the cutting machine. Subsequent recycling requires manual collection, further fragmentation, crushing, and washing of the collected PE film waste. The overall operation is relatively complex and reduces recycling efficiency. Therefore, we have designed a cutting device for PE film processing. Summary of the Invention

[0003] The present invention provides a cutting device for PE film processing, which solves the above-mentioned problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A cutting device for PE film processing includes an unwinding machine. A frame is provided on the front side of the unwinding machine. Multiple evenly distributed guide rollers are rotatably mounted on the top of the frame via bearings. A slitter is installed on the front side of the top of the frame. A guide component and a conveying structure are sequentially installed on the front side of the frame from top to bottom. The guide component includes two guide rollers rotatably mounted on the front side of the frame via bearings. The conveying structure includes two conveying rollers rotatably mounted on the front side of the frame via bearings. The two conveying rollers are driven by gear meshing, and one of the conveying rollers is connected to the output shaft of a drive motor via a belt. The two conveying rollers rotate in opposite directions under the action of the gears. The slit waste material is held between the two conveying rollers by the two guide rollers in the guide component. The rotation of the conveying rollers enables the waste material to move downward continuously and be conveyed into the cutting hood for cutting. A mounting cover is screwed on the lower front side of the frame. Cutting covers are installed on the left and right sides of the mounting cover. Waste material cut from the left and right sides of the PE film can enter the two cutting covers through the conveying rollers. Each cutting cover is equipped with a cutting structure and a clamping structure. A driving component is installed between the two cutting covers. The driving component is connected to the cutting structure and the clamping structure.

[0005] Preferably, the cutting cover has a cutting cavity formed through its top and bottom, the bottom end of the cutting cavity is connected to the inside of the mounting cover, and a connecting reducer is installed on the lower front side of the mounting cover. The other end of the connecting reducer is connected to the air inlet of an external blower through a pipe, and the air outlet of the blower is connected to a crusher or a collecting device through a pipe. The PE film fragments cut into pieces can be directly transported to the crusher or winding device by the blower.

[0006] Preferably, the cutting structure includes two sets of T-shaped frames symmetrically distributed front and back, with the two T-shaped frames located on the front and back sides of the cutting cover respectively. A linear track is fixed to the inner wall of the mounting cover, and the T-shaped frames are slidably connected to the linear track via sliders. The T-shaped frame includes a horizontal plate, and vertical plates are welded to the rear side of the horizontal plate. The vertical plates slide within the space between the cutting cover and the mounting cover. Multiple equally spaced cutting blades are arranged on the side surface of the vertical plates facing the cutting cover from top to bottom.

[0007] Preferably, the cutting blades on the two T-shaped frames in the same group of cutting structures are staggered, that is, the lower surface of the cutting blade on the rear T-shaped frame is flush with the upper surface of the cutting blade on the front T-shaped frame. In this way, when the two T-shaped frames move closer to each other inward, the cutting blades on both sides can cut the PE film waste between them, and the cutting blades will not collide and avoid damage. The cutting cover has multiple linearly distributed cutting openings on both the front and rear sides. Each of the multiple cutting openings on the front and rear sides corresponds to a multiple cutting blade on the front and rear sides. The cutting blade can pass through the cutting opening and extend into the cutting cavity of the cutting cover, thereby cutting the PE film waste in the cutting cavity.

[0008] Preferably, clamping openings are provided at the upper and lower ends of both sides of the front and rear surfaces of the cutting cover. The clamping structure includes four clamping blocks, which are slidably inserted into the four clamping openings. The right sides of the two rear clamping blocks and the right sides of the two front clamping blocks are connected by connecting vertical plates. A guide rod is fixed inside the mounting cover. The connecting vertical plate is slidably connected to the guide rod through the guide block. Part of the clamping block extends into the clamping opening and is flush with the inner wall of the cutting cavity of the cutting cover. The two upper clamping blocks are positioned above the uppermost cutting blade, and the two lower clamping blocks are positioned below the lowermost cutting blade. The upper two clamping blocks and the lower two clamping blocks can clamp and fix the upper and lower ends of the PE film waste respectively, thus making it easier for the cutting blade to cut it into several fragments.

[0009] Preferably, a horizontal plate is fixed on the upper and lower sides between the two cutting covers, and two guide columns symmetrically distributed on the left and right are fixed between the two horizontal plates. A lifting plate and a linkage plate are slidably installed between the two guide columns. The linkage plate is above the lifting plate and is connected to the lifting plate by a connecting sleeve. The connecting sleeve is slidably fitted onto the guide column. A driving cylinder is installed on the lower horizontal plate and is connected to the lifting plate. The drive cylinder uses a PLC, timer relay or microcontroller to preset the action time and duration. After the set time is reached, it automatically outputs an electrical signal to extend or retract the push rod of the drive cylinder.

[0010] Preferably, the cross plate in the T-shaped frame has a drive groove on the side facing the drive component, and two drive grooves are symmetrically distributed in the same group of cutting structures. Two sets of drive rollers are respectively provided on the left and right sides of the lifting plate, and multiple drive rollers slide into multiple drive grooves respectively. The drive groove includes a stop groove vertically opened on the horizontal plate of the T-shaped frame, and an inclined cutting groove is opened below the stop groove. The upper end of the cutting groove is away from the inner wall of the mounting cover, and the lower end of the cutting groove is close to the inner wall of the mounting cover. In the initial state, the push rod of the drive cylinder is in the extended state, the drive roller slides in the stop groove, the two T-shaped frames in the same cutting structure are at the farthest distance, the innermost end of the cutting blade is placed in the cutting opening, and the cutting blade has not extended into the cutting cavity. When the drive roller moves to the bottom of the cutting groove, the T-shaped frame moves to its maximum distance. At this time, the tips of the front cutting blades and the tips of the rear cutting blades partially overlap, which can separate the PE film waste inside.

[0011] Preferably, the two clamping blocks above are respectively welded with movable plates on the side away from the connecting vertical plate, and movable grooves are opened on the movable plates. Movable rollers are respectively provided on the left and right sides of the linkage plate, and multiple movable rollers slide into multiple movable grooves respectively. The moving groove includes a retaining groove vertically formed on the moving plate, and an inclined clamping groove is formed at the upper end of the retaining groove. The upper end of the clamping groove is far away from the inner wall of the mounting cover, and the lower end of the clamping groove is close to the inner wall of the mounting cover. In the initial state, the push rod of the drive cylinder is in the extended state, and the moving roller rolls to the top inside the clamping groove, with the distance between the front and rear clamping blocks being the largest.

[0012] Preferably, when the moving roller is rolled to the top of the clamping groove, the driving roller is rolled to the stop groove; when the moving roller is at the intersection of the clamping groove and the holding groove, the driving roller is at the intersection of the cutting groove and the stop groove.

[0013] The beneficial effects of this invention are: 1. By setting two cutting covers on the front side of the frame, each of which is equipped with a cutting structure, the waste material after PE film slitting can be directly cut. With the installation cover and the blower, the waste material cut into fragments can be directly collected for secondary processing, eliminating the need for further processing after waste collection. This improves waste recycling efficiency and reduces labor costs.

[0014] 2. By setting a clamping structure on the cutting cover, the clamping structure can clamp and fix the upper and lower ends of the PE film waste, so that the PE film waste will not shake during cutting, which facilitates subsequent cutting operations and improves cutting efficiency. 3. Both the clamping structure and the cutting structure are connected by a drive unit. The timing of the actions of the clamping structure and the cutting structure is determined. Before the cutting structure cuts the PE film waste, the clamping structure can clamp and fix the PE film waste, which improves work efficiency and avoids incomplete cutting of PE film waste due to shaking during the cutting process, and prevents the PE film waste from causing pipe blockage due to its large size. Attached Figure Description

[0015] Figure 1 This is a front view of a cutting device for PE film processing proposed in this invention; Figure 2 This is a cross-sectional view of a cutting device for PE film processing proposed in this invention; Figure 3 for Figure 1 A schematic diagram of the installation cover, cutting cover, clamping structure, and cutting structure. Figure 4 for Figure 3 Schematic diagram of the structure of the cutting cover; Figure 5 for Figure 3 A schematic diagram of the clamping structure, cutting structure, and driving component; Figure 6 for Figure 5 Exploded view; Figure 7 This is a front view of the clamping structure, cutting structure, and driving components; Figure 8 for Figure 2 A magnified view of a portion of the image.

[0016] The diagram is labeled as follows: 1. Unwinder; 2. Frame; 21. Guide roller; 22. Slitter; 23. Guide component; 3. Conveying structure; 4. Mounting cover; 41. Connecting reducer; 5. Cutting cover; 51. Horizontal plate; 52. Cutting opening; 53. Clamping opening; 6. Cutting structure; 61. T-shaped frame; 62. Cutting blade; 63. Drive groove; 631. Stop groove; 632. Cutting groove; 64. Linear track; 7. Clamping structure; 71. Clamping block; 72. Connecting vertical plate; 721. Guide rod; 73. Moving plate; 74. Moving groove; 741. Clamping groove; 742. Holding groove; 8. Drive cylinder; 81. Lifting plate; 811. Drive roller; 82. Linkage plate; 821. Moving roller; 83. Connecting sleeve; 84. Guide column. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0018] Reference Figure 1 - Figure 8 A cutting device for PE film processing includes an unwinding machine 1, a frame 2 is provided on the front side of the unwinding machine 1, a plurality of evenly distributed guide rollers 21 are rotatably mounted on the top of the frame 2 via bearings, a slitting device 22 is installed on the front side of the top of the frame 2, and a guide component 23 and a conveying structure 3 are installed sequentially from top to bottom on the front side of the frame 2. The guide component 23 includes two guide rollers 21 rotatably mounted on the front side of the frame 2 via bearings, and the conveying structure 3 includes two conveying rollers rotatably mounted on the front side of the frame 2 via bearings. The two conveying rollers are driven by gear meshing, and one of the conveying rollers is connected to the output shaft of the drive motor via a belt. The two conveying rollers rotate in opposite directions under the action of the gears. The slit waste material is held between the two conveying rollers by the two guide rollers 21 in the guide component 23. The rotation of the conveying rollers enables the waste material to move downward continuously and be conveyed into the cutting hood 5 for cutting. The mounting cover 4 is screwed on the lower front side of the frame 2. The cutting cover 5 is installed on the left and right sides of the mounting cover 4. The waste material cut off from the left and right sides of the PE film can enter the two cutting covers 5 through the conveying rollers. Each cutting cover 5 is equipped with a cutting structure 6 and a clamping structure 7. A driving component is installed between the two cutting covers 5. The driving component is connected to the cutting structure 6 and the clamping structure 7.

[0019] Reference Figure 1 , Figure 8The cutting cover 5 has a cutting cavity formed through the top and bottom. The bottom end of the cutting cavity is connected to the inside of the mounting cover 4. A connecting reducer 41 is installed on the lower front side of the mounting cover 4. The other end of the connecting reducer 41 is connected to the air inlet of an external blower through a pipe. The air outlet of the blower is connected to a crusher or a collecting device through a pipe. The PE film fragments cut into pieces can be directly transported to the crusher or winding device by the blower.

[0020] Reference Figure 3 - Figure 8 The cutting structure 6 includes two sets of T-shaped frames 61 symmetrically distributed front and back. The two T-shaped frames 61 are located on the front and back sides of the cutting cover 5 respectively. A linear track 64 is fixed to the inner wall of the mounting cover 4. The T-shaped frames 61 are slidably connected to the linear track 64 through a slider. The T-shaped frame 61 includes a horizontal plate, and vertical plates are welded to the rear side of the horizontal plate. The vertical plates slide within the space between the cutting cover 5 and the mounting cover 4. Multiple equally spaced cutting blades 62 are arranged from top to bottom on the side surface of the vertical plates facing the cutting cover 5.

[0021] The cutting blades 62 on the two T-shaped frames 61 in the same cutting structure 6 are staggered, that is, the lower surface of the cutting blade 62 on the rear T-shaped frame 61 is flush with the upper surface of the cutting blade 62 on the front T-shaped frame 61. In this way, when the two T-shaped frames 61 move closer to each other inward, the cutting blades 62 on both sides can cut the PE film waste between them, and the cutting blades 62 will not collide and avoid damage. Multiple linearly distributed cutting openings 52 are provided on both the front and rear sides of the cutting cover 5. The multiple cutting openings 52 on the front and rear sides correspond one-to-one with the multiple cutting blades 62 on the front and rear sides. The cutting blades 62 can pass through the cutting openings 52 and extend into the cutting cavity of the cutting cover 5, thereby cutting the PE film waste in the cutting cavity.

[0022] Reference Figure 3 - Figure 8 The cutting cover 5 has clamping openings 53 at both the top and bottom ends of its front and rear surfaces. The clamping structure 7 includes four clamping blocks 71, which are slidably inserted into the four clamping openings 53. The right sides of the two rear clamping blocks 71 and the right sides of the two front clamping blocks 71 are connected by connecting vertical plates 72. The mounting cover 4 has a guide rod 721 fixed inside. The connecting vertical plate 72 is slidably connected to the guide rod 721 by the guide block. Part of the clamping block 71 extends into the clamping opening 53 and is flush with the inner wall of the cutting cavity of the cutting cover 5. The two upper clamping blocks 71 are positioned above the uppermost cutting blade 62, and the two lower clamping blocks 71 are positioned below the lowermost cutting blade 62. The two upper clamping blocks 71 and the two lower clamping blocks 71 can clamp and fix the upper and lower ends of the PE film waste respectively, so that the cutting blade 62 can cut it into several fragments.

[0023] Reference Figure 3 - Figure 6 A horizontal plate 51 is fixed on the upper and lower sides between the two cutting covers 5 on the left and right. Two guide columns 84 are fixed between the two horizontal plates 51. A lifting plate 81 and a linkage plate 82 are slidably installed between the two guide columns 84. The linkage plate 82 is above the lifting plate 81 and is connected to the lifting plate 81 by a connecting sleeve 83. The connecting sleeve 83 is slidably sleeved on the guide column 84. A drive cylinder 8 is installed on the lower horizontal plate 51 and is connected to the lifting plate 81. The drive cylinder 8 uses a PLC, timer relay or microcontroller to preset the action time and duration. After the set time is reached, it automatically outputs an electrical signal to extend or retract the push rod of the drive cylinder 8.

[0024] Reference Figure 5 - Figure 7 The T-shaped frame 61 has a drive groove 63 on the side of the horizontal plate facing the drive component. Two drive grooves 63 are symmetrically distributed in the same set of cutting structures 6. Two sets of drive rollers 811 are respectively set on the left and right sides of the lifting plate 81. Multiple drive rollers 811 slide into multiple drive grooves 63 respectively. The drive slot 63 includes a stop slot 631 vertically opened on the horizontal plate of the T-shaped frame 61. Below the stop slot 631, there is an inclined cutting slot 632. The upper end of the cutting slot 632 is far away from the inner wall of the mounting cover 4, and the lower end of the cutting slot 632 is close to the inner wall of the mounting cover 4. In the initial state, the push rod of the drive cylinder 8 is in the extended state. At this time, the drive roller 811 slides in the stop groove 631. The two T-shaped frames 61 in the same group of cutting structures 6 are at their farthest distance. The innermost end of the cutting blade 62 is placed in the cutting opening 52. The cutting blade 62 has not extended into the cutting cavity. When the push rod of the drive cylinder 8 retracts, the position of the T-shaped frame 61 remains unchanged as the drive roller 811 slides along the stop groove 631. When the drive roller 811 moves to the cutting groove 632 and slides down along the cutting groove 632, the front and rear T-shaped frames 61 will move closer to each other, thereby making the multiple cutting blades 62 at the front and rear move closer to each other. When the drive roller 811 moves to the bottom of the cutting groove 632, the T-shaped frame 61 moves to the maximum distance. At this time, the blade tip of the front cutting blade 62 and the blade tip of the rear cutting blade 62 partially overlap, which can separate the internal PE film waste.

[0025] Two clamping blocks 71 at the top are respectively welded with movable plates 73 on the side away from the connecting vertical plate 72. Movable grooves 74 are opened on the movable plates 73. Movable rollers 821 are respectively arranged on the left and right sides of the linkage plate 82. Multiple movable rollers 821 slide into multiple movable grooves 74 respectively. The moving groove 74 includes a retaining groove 742 vertically opened on the moving plate 73. The upper end of the retaining groove 742 is provided with an inclined clamping groove 741. The upper end of the clamping groove 741 is far away from the inner wall of the mounting cover 4, and the lower end of the clamping groove 741 is close to the inner wall of the mounting cover 4. In the initial state, the push rod of the drive cylinder 8 is in the extended state. At this time, the moving roller 821 is rolled and placed at the top inside the clamping groove 741, and the distance between the front and rear clamping blocks 71 is at its maximum. The PE film can move downward through the space between the two clamping blocks 71. When the moving roller 821 moves downward along the clamping groove 741, the clamping blocks 71 on the front and rear sides will move inward synchronously and move closer to each other. When the moving roller 821 moves to the connection between the clamping groove 741 and the holding groove 742, the clamping blocks 71 on the front and rear sides will clamp and fix the PE film. Afterward, when the moving roller 821 moves downward along the holding groove 742, the position of the clamping blocks 71 remains unchanged.

[0026] When the moving roller 821 is rolled to the top of the clamping groove 741, the driving roller 811 is rolled to the stop groove 631. When the moving roller 821 is at the intersection of the clamping groove 741 and the holding groove 742, the driving roller 811 is at the intersection of the cutting groove 632 and the stop groove 631. That is, before the clamping block 71 clamps and fixes the PE film, the cutting blade 62 will not move to cut the PE film.

[0027] Working principle: A winding machine is set on the front side of the frame 2. The PE roll is installed on the unwinding machine 1. One end of the PE film is passed through multiple guide rollers 21 and cut by the slitter 22 and then wound on the winding machine. The power of the air blower is turned on, and the suction generated by the air blower will cause the PE film to move downward. The waste material on the left and right sides of the PE film passes through the guide 23 and the conveying structure 3 and extends into the two cutting covers 5 on the left and right sides. During the winding process of the PE film, the slitter 22 will divide the PE film. At the same time, the two conveying rollers in the conveying structure 3 will also cause the waste material at both ends of the PE film to continuously enter the cutting cover 5. The drive cylinder 8 uses a PLC, timer relay or microcontroller to preset the action time and duration. After the set time is reached, it automatically outputs an electrical signal, and the push rod of the drive cylinder 8 extends or retracts. The movement speed of the PE film is fixed. The running time of the drive cylinder 8 can be calculated based on the movement speed of the PE film and the required movement distance.

[0028] In the initial state, the push rod of the drive cylinder 8 is in the extended state. At this time, the drive roller 811 slides in the stop groove 631. The two T-shaped frames 61 in the same set of cutting structures 6 are at their farthest distance. The innermost end of the cutting blade 62 is placed in the cutting opening 52. The cutting blade 62 has not extended into the cutting cavity. At the same time, the moving roller 821 rolls in the uppermost position inside the clamping groove 741. The distance between the two clamping blocks 71 is the largest. The PE film can move downward through the space between the two clamping blocks 71. When the length of the PE film waste inside the cutting cover 5 reaches a certain length, the push rod of the drive cylinder 8 retracts, causing the lifting plate 81 to move downward. The lifting plate 81 will drive the linkage plate 82 to move downward together through the connecting sleeve 83. During the downward movement of the lifting plate 81 and the linkage plate 82, the drive roller 811 and the moving roller 821 located on the lifting plate 81 and the linkage plate 82 will also move downward synchronously. When the moving roller 821 moves downward along the clamping groove 741, the clamping blocks 71 on the front and rear sides will move inward synchronously and approach each other. When the moving roller 821 moves to the connection between the clamping groove 741 and the holding groove 742, the clamping blocks 71 on the front and rear sides will clamp and fix the PE film. During this process, when the driving roller 811 slides along the stop groove 631, the position of the T-shaped frame 61 remains unchanged. After the multiple clamping blocks 71 have moved into place, the clamping blocks 71 on the upper and lower sides will clamp and fix the upper and lower ends of the PE film respectively. At this time, the moving roller 821 moves to the connection between the clamping groove 741 and the holding groove 742, and the driving roller 811 is at the intersection of the cutting groove 632 and the stop groove 631. Then the lifting plate 81 and the linkage plate 82 continue to drive the driving roller 811 and the moving roller 821 to continue to move downward. When the drive roller 811 moves to the cutting groove 632 and slides downward along the cutting groove 632, the front and rear T-shaped frames 61 will move closer to each other, thereby causing the multiple cutting blades 62 at the front and rear to move closer to each other. When the drive roller 811 moves to the bottom of the cutting groove 632, the T-shaped frame 61 moves to the maximum distance. At this time, the blade tip of the front cutting blade 62 and the blade tip of the rear cutting blade 62 partially overlap, which can divide the PE film waste inside. During this process, when the moving roller 821 moves downward along the holding groove 742, the position of the clamping block 71 remains unchanged, always clamping and fixing the PE film waste, thereby cutting the PE film waste into several fragments.

[0029] Then the push rod of the drive cylinder 8 extends and resets, and the lifting plate 81 and the linkage plate 82 will drive the drive roller 811 and the moving roller 821 to move upward. During the upward movement, the cutting blades 62 on the front and rear sides will move away from each other and return to their original positions. Then the clamping blocks 71 on the front and rear sides will also move away from each other and return to their original positions. The cut fragments will fall and be directly conveyed to the crusher or winding device by the blower.

[0030] By setting two cutting covers 5 on the front side of the frame 2, each cutting cover 5 is equipped with a cutting structure 6. The cutting structure 6 can directly cut the waste material after the PE film is cut. With the installation cover 4 and the blower, the waste material cut into fragments can be directly collected for secondary processing. There is no need to collect the waste material and process it again, which improves the waste recycling efficiency and reduces labor costs.

[0031] By setting a clamping structure 7 on the cutting cover 5, the clamping structure 7 can clamp and fix the upper and lower ends of the PE film waste, so that the PE film waste will not shake during cutting, which facilitates subsequent cutting operations and improves cutting efficiency. Both the clamping structure 7 and the cutting structure 6 are connected by a drive unit. The timing of the actions of the clamping structure 7 and the cutting structure 6 is determined. Before the cutting structure 6 cuts the PE film waste, the clamping structure 7 can clamp and fix the PE film waste, which improves work efficiency and avoids incomplete cutting of PE film waste due to shaking during the cutting process. The large size of the PE film waste can also cause blockage of the pipeline.

[0032] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., 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 invention 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 invention.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0034] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A cutting device for processing PE film, characterized in that, The unwinding machine (1) is provided with a frame (2) on the front side of the unwinding machine (1). Multiple evenly distributed guide rollers (21) are rotatably mounted on the top of the frame (2) via bearings. A slitting device (22) is installed on the front side of the top of the frame (2). Guide components (23) and a conveying structure (3) are installed sequentially from top to bottom on the front side of the frame (2). The frame (2) is screwed on the lower front side and has a mounting cover (4). Inside the mounting cover (4), there are cutting covers (5) on the left and right sides respectively. Each cutting cover (5) has a cutting structure (6) and a clamping structure (7) installed on it. A driving component is installed between the two cutting covers (5). The driving component is connected to the cutting structure (6) and the clamping structure (7).

2. The cutting device for PE film processing according to claim 1, characterized in that, The cutting cover (5) has a cutting cavity formed through the top and bottom. The bottom end of the cutting cavity is connected to the inside of the mounting cover (4). A connecting reducer (41) is installed on the lower front side of the mounting cover (4). The other end of the connecting reducer (41) is connected to the air inlet of an external induced draft fan through a pipe.

3. The cutting device for PE film processing according to claim 1, characterized in that, The cutting structure (6) includes two sets of T-shaped frames (61) symmetrically distributed front and back. The two T-shaped frames (61) are located on the front and back sides of the cutting cover (5) respectively. The inner wall of the mounting cover (4) is fixed with a linear track (64). The T-shaped frames (61) are slidably connected to the linear track (64) through a slider. The T-shaped frame (61) includes a horizontal plate, and a vertical plate is welded to the rear side of the horizontal plate. The vertical plate slides in the space between the cutting cover (5) and the mounting cover (4). Multiple equally spaced cutting blades (62) are arranged from top to bottom on the side surface of the vertical plate facing the cutting cover (5).

4. The cutting device for PE film processing according to claim 3, characterized in that, The cutting blades (62) on the two T-shaped frames (61) in the same group of cutting structures (6) are staggered; The cutting cover (5) has multiple linearly distributed cutting openings (52) on both the front and rear sides, and the multiple cutting openings (52) on the front and rear sides correspond one-to-one with the multiple cutting blades (62) on the front and rear sides.

5. The cutting device for PE film processing according to claim 4, characterized in that, The cutting cover (5) has clamping openings (53) at both the top and bottom of its front and rear surfaces. The clamping structure (7) includes four clamping blocks (71). The four clamping blocks (71) are slidably inserted into the four clamping openings (53). The right sides of the two rear clamping blocks (71) and the right sides of the two front clamping blocks (71) are connected by connecting vertical plates (72). The mounting cover (4) has a guide rod (721) fixed inside. The connecting vertical plate (72) is slidably connected to the guide rod (721) through the guide block. Part of the clamping block (71) extends into the clamping opening (53) and is flush with the inner wall of the cutting cavity of the cutting cover (5).

6. The cutting device for PE film processing according to claim 5, characterized in that, A horizontal plate (51) is fixed on the upper and lower sides between the two cutting covers (5) on the left and right. Two guide posts (84) are fixed between the two horizontal plates (51) and are symmetrically distributed on the left and right. A lifting plate (81) and a linkage plate (82) are slidably installed between the two guide posts (84). The linkage plate (82) is above the lifting plate (81) and is connected to the lifting plate (81) through a connecting sleeve (83). The connecting sleeve 83 is slidably sleeved on the guide post 84. A driving cylinder (8) is installed on the lower horizontal plate (51) and is connected to the lifting plate (81).

7. A cutting device for PE film processing according to claim 6, characterized in that, The T-shaped frame (61) has a drive groove (63) on the side of the horizontal plate facing the drive component. The two drive grooves (63) in the same set of cutting structures (6) are symmetrically distributed. The left and right sides of the lifting plate (81) are respectively provided with two sets of drive rollers (811). Multiple drive rollers (811) slide into multiple drive grooves (63). The drive groove (63) includes a stop groove (631) vertically opened on the horizontal plate of the T-shaped frame (61). A cutting groove (632) is provided below the stop groove (631) at an incline. The upper end of the cutting groove (632) is far away from the inner wall of the mounting cover (4), and the lower end of the cutting groove (632) is close to the inner wall of the mounting cover (4).

8. A cutting device for PE film processing according to claim 7, characterized in that, The two clamping blocks (71) above are respectively welded with movable plates (73) on the side away from the connecting vertical plate (72). Movable grooves (74) are opened on the movable plates (73). Movable rollers (821) are respectively provided on the left and right sides of the linkage plate (82). Multiple movable rollers (821) slide into multiple movable grooves (74). The moving groove (74) includes a retaining groove (742) vertically opened on the moving plate (73). The upper end of the retaining groove (742) is provided with an inclined clamping groove (741). The upper end of the clamping groove (741) is far away from the inner wall of the mounting cover (4), and the lower end of the clamping groove (741) is close to the inner wall of the mounting cover (4).

9. A cutting device for PE film processing according to claim 8, characterized in that, When the moving roller (821) is rolled to the top of the clamping groove (741), the driving roller (811) is rolled to the stop groove (631). When the moving roller (821) is at the intersection of the clamping groove (741) and the holding groove (742), the driving roller (811) is at the intersection of the cutting groove (632) and the stop groove (631).

Images