PE film slitting machine with scrap removing mechanism

Abstract

The present disclosure relates to the technical field of slitting machine, and one embodiment of the present disclosure provides a PE film slitting machine with a debris removal mechanism, which comprises an equipment frame and an inner cavity, the inner cavity is arranged in the equipment frame, a conveying assembly is arranged in the equipment frame, a slitting and debris removal assembly is arranged in the equipment frame and the inner cavity, the slitting and debris removal assembly comprises a rotating shaft, the rotating shaft is rotationally connected in the inner cavity, the rotating shaft is driven to rotate by electricity, a plurality of horizontal openings are arranged at the top of the inner cavity, a plurality of slitting blades are fixedly connected to the rotating shaft, and the top of the slitting blades passes through the horizontal openings and is located outside. Through the above technical scheme, the technical problem that the traditional manual cleaning method in the prior art is low in efficiency, it is difficult to completely remove the residual debris in the equipment gap, long-term accumulation can aggravate the equipment wear and tear, and the service life is shortened is solved.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the technical field of slitting machines, and more specifically, to a PE film slitting machine with a chip removal mechanism. Background Technology

[0002] In the PE film processing industry, slitting is a crucial process for cutting wide rolls of material into specific sizes. Its processing precision and environmental cleanliness directly impact product quality and production safety. Traditional PE film slitting machines largely rely on high-speed shearing with blades to achieve segmentation, but generally lack effective chip removal designs, resulting in significant technical deficiencies.

[0003] PE film material has a certain degree of toughness and ductility. During the slitting process, the friction and extrusion between the blade and the film material generate a large amount of micron-sized powder and fine debris. If these impurities are not treated in time, they will be attracted to the film surface by static electricity, resulting in stains and defects on the slit PE film, reducing the product qualification rate. In high-precision applications such as food packaging and electronic component encapsulation, dust remaining on the film surface may also cause quality accidents such as sealing failure and contamination.

[0004] Meanwhile, the drifting dust permeates the production workshop, not only endangering the respiratory health of operators but also potentially causing equipment malfunctions due to dust accumulation, such as clogging transmission components and affecting sensor sensitivity. Traditional manual cleaning methods are inefficient and fail to thoroughly remove residual debris from equipment crevices, leading to long-term wear and tear and shortening equipment lifespan. These drawbacks make traditional slitting equipment unable to meet the high cleanliness and safety requirements of modern PE film processing, necessitating the development of new equipment integrating efficient dust removal mechanisms to address these technical challenges. Utility Model Content

[0005] To overcome the above-mentioned defects, the embodiments of this disclosure provide a PE film slitting machine with a chip removal mechanism, which solves the technical problem that the traditional manual cleaning method in the prior art is inefficient and difficult to completely remove residual debris in the gaps of the equipment, which will aggravate equipment wear and shorten service life due to long-term accumulation.

[0006] According to one aspect, at least one embodiment of this disclosure provides a PE film slitting machine having a chip removal mechanism, comprising: The equipment rack and the inner cavity, wherein the inner cavity is formed inside the equipment rack; A conveying assembly, which is disposed in the equipment rack; The chip removal assembly is disposed within the device frame and the inner cavity; The chip removal assembly includes a rotating shaft rotatably connected in the inner cavity. The rotating shaft is driven to rotate by electricity. Several horizontal openings are provided at the top of the inner cavity. Several cutting blades are fixedly connected to the rotating shaft. The tops of the cutting blades pass through the horizontal openings and are located on the outside. The top of the equipment frame is provided with a pair of long suction ports, which are connected to the interior of the inner cavity. The bottom of the equipment frame is provided with a gas collection hood, and the bottom of the gas collection hood is provided with a docking sleeve. The bottom of the docking sleeve is fitted with a dust collection box, and the top of the dust collection box is rotatably connected with a pair of limiting frames. The limiting frames are attached to the top of the docking sleeve, and a pair of inner frames are provided at the top inside the dust collection box. A filter screen is installed between the inner frames, and a telescopic pipe is provided on one side of the dust collection box. A connecting sleeve is provided at one end of the telescopic pipe, and a connecting flange is provided on the connecting sleeve.

[0007] As a further technical solution, the conveying assembly includes a pair of flattening rollers, both of which are rotatably connected inside the equipment frame. The flattening rollers are attached to the top surface of the equipment frame, and a feed tension roller is rotatably connected inside the equipment frame.

[0008] As a further technical solution, a discharge tension roller is rotatably connected inside the equipment frame, and a pair of discharge rollers are rotatably connected inside the equipment frame. The surfaces of the discharge rollers are in contact with each other, and a transmission gear is provided at one end of each discharge roller. One of the discharge rollers is driven to rotate by electricity.

[0009] As a further technical solution, the upper surface of the equipment rack located in the inner cavity is an arc-shaped transition structure surface.

[0010] As a further technical solution, the size of the filter screen is smaller than the opening size at the top of the dust collection box.

[0011] The beneficial effects of the embodiments disclosed herein are as follows: 1. In this disclosure, the chip removal assembly solves the problem of chip cleaning in traditional equipment by simultaneously cutting and removing chips with negative pressure. While the cutting blades cut at high speed, the long suction port and the air collection hood create a negative pressure airflow to promptly remove chips, preventing electrostatic adsorption on the film surface or equipment gaps. The dust collection box and filter screen achieve centralized chip collection, and the limiting frame design facilitates cleaning. This design eliminates the tediousness of manual cleaning, prevents chip accumulation from aggravating equipment wear, ensures the cleanliness of the PE film surface, improves product qualification rate, and meets the needs of high-precision packaging scenarios.

[0012] 2. In this disclosure, the conveying assembly solves the problem of unstable PE film conveying affecting slitting accuracy through multi-stage roller coordination. The flattening roller ensures the film enters the slitting process flat, while the infeed and outlet tension rollers maintain stable tension to prevent the film from loosening or stretching. The outlet roller synchronously clamps and conveys the film via gear transmission, ensuring orderly output of the slitting film. This design stabilizes the position of the PE film during slitting, reduces cut skewing caused by offset, improves slitting dimensional accuracy, and is suitable for high-speed continuous production. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0014] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure; Figure 2 This is an isometric drawing of the present disclosure; Figure 3 This is an isometric sectional view of the present disclosure; Figure 4 This is another isometric sectional view of this disclosure; Figure 5 Appendix to this disclosure Figure 4 Enlarged view of part A in the middle; In the diagram: 1. Equipment frame; 2. Inner cavity; 3. Slitting and chipping assembly; 3-1. Rotating shaft; 3-2. Cross opening; 3-3. Slitting blade; 3-4. Dust suction port; 3-5. Air collection hood; 3-6. Connecting sleeve; 3-7. Dust collection box; 3-8. Limiting frame; 3-9. Inner frame; 3-10. Filter screen; 3-11. Telescopic pipe; 3-12. Connecting sleeve; 3-13. Connecting flange; 4. Conveying assembly; 4-1. Flattening roller; 4-2. Feed tension roller; 4-3. Discharge tension roller; 4-4. Discharge roller; 4-5. Transmission gear. Detailed Implementation

[0015] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0016] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0017] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0018] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0019] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to 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 disclosure.

[0020] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] like Figures 1-5 As shown, a PE film slitting machine with a chip removal mechanism according to an embodiment of the present disclosure is illustrated, comprising: The equipment rack 1 and the inner cavity 2 are formed inside the equipment rack 1; Conveying assembly 4, which is disposed in the equipment rack 1; The chip removal assembly 3 is disposed in the device frame 1 and the inner cavity 2; The chip-removing assembly 3 includes a rotating shaft 3-1, which is rotatably connected to the inner cavity 2. The rotating shaft 3-1 is electrically driven to rotate. Several horizontal openings 3-2 are provided at the top of the inner cavity 2. Several slitting blades 3-3 are fixedly connected to the rotating shaft 3-1. The tops of the slitting blades 3-3 pass through the horizontal openings 3-2 and are located on the outside. A pair of long suction ports 3-4 are provided at the top of the equipment frame 1, and the long suction ports 3-4 communicate with the interior of the inner cavity 2. A gas collection hood 3-5 is provided at the bottom of the equipment frame 1. -5 is provided with a docking sleeve 3-6 at the bottom, and a dust collection box 3-7 is fitted to the bottom of the docking sleeve 3-6. A pair of limiting frames 3-8 are rotatably connected to the top of the dust collection box 3-7. The limiting frames 3-8 are attached to the top of the docking sleeve 3-6. A pair of inner frames 3-9 are provided at the top inside the dust collection box 3-7. A filter screen 3-10 is installed between the inner frames 3-9. A telescopic pipe 3-11 is provided on one side of the dust collection box 3-7. A connecting sleeve 3-12 is provided at one end of the telescopic pipe 3-11. A connecting flange 3-13 is provided on the connecting sleeve 3-12.

[0022] In some examples, to achieve the effect of PE film slitting and debris / dust removal, a slitting and desiccation assembly 3 is designed. This assembly includes a rotating shaft 3-1 inside the inner cavity 2, rotatably connected by bearings and driven by a motor via chain transmission. Slitting blades 3-3 on the shaft are evenly distributed axially and fixed by key connections. The top of the blades passes through the horizontal opening 3-2 at the top of the inner cavity 2, with the blade edge higher than the top surface of the equipment frame 1, allowing them to contact the PE film for slitting. Dust suction ports 3-4 at the top of the equipment frame 1 are located on both sides of the slitting blades 3-3, extending along the slitting direction and communicating with the inner cavity 2 to form a dust suction channel. The docking sleeve 3-6 at the bottom of the equipment frame 1 is adapted to the interface at the top of the dust collection box 3-7. The dust collection box 3-7 is fixed by a limiting bracket 3-8, one end of which is rotatably connected to the top of the dust collection box 3-7, and the other end is attached to the top of the docking sleeve 3-6, allowing for rotation.

[0023] The inner frame 3-9 at the top of the dust collection box 3-7 is symmetrically distributed, with the filter screen 3-10 placed between them. A telescopic pipe 3-11 on one side connects to the side interface of the dust collection box 3-7, and the connecting sleeve 3-12 at the other end connects to the pipe of the external negative pressure equipment via a connecting flange 3-13. During operation, the motor drives the rotating shaft 3-1 to rotate the slitting blade 3-3. As the PE film passes through, it is slit into multiple strips. The resulting debris is carried by the airflow through the suction port 3-4 into the inner cavity 2, and then falls into the air collection hood 3-5. The negative pressure equipment draws air through the telescopic pipe 3-11, creating a negative pressure between the inner cavity 2 and the air collection hood 3-5. The debris is sucked into the dust collection box 3-7, filtered by the filter screen 3-10, and collected inside the box, while clean air is discharged. The limiting frame 3-8 facilitates the loading, unloading, and cleaning of the dust collection box 3-7, and the telescopic pipe 3-11 adapts to changes in the distance between the equipment and the negative pressure source. This component avoids debris contamination of the environment by simultaneously performing cutting and vacuuming, thus improving cutting quality and the cleanliness of the operating environment.

[0024] like Figures 1-5 As shown in the figure, the conveying assembly 4 in this embodiment includes a pair of flattening rollers 4-1, both of which are rotatably connected inside the equipment frame 1. The flattening rollers 4-1 are attached to the top surface of the equipment frame 1. A feeding tension roller 4-2 is rotatably connected inside the equipment frame 1. A discharging tension roller 4-3 is rotatably connected inside the equipment frame 1. A pair of discharging rollers 4-4 are rotatably connected inside the equipment frame 1. The surfaces of the discharging rollers 4-4 are in contact with each other. A transmission gear 4-5 is provided at one end of each discharging roller 4-4. One of the discharging rollers 4-4 is driven to rotate by electricity.

[0025] In some examples, in order to achieve stable conveying of PE film and to cooperate with the slitting operation, a conveying assembly 4 is designed. This assembly includes a flattening roller 4-1 in the equipment frame 1, which is rotatably connected by bearings and distributed in pairs on the front and rear sides of the slitting blade 3-3. The bottom of the roller is attached to the top surface of the equipment frame 1 and can be passively rotated with the movement of the PE film to flatten the film material and avoid wrinkles. The feed tension roller 4-2 and the discharge tension roller 4-3 are rotatably connected inside the equipment frame 1 via bearings. They are distributed at the front and rear ends of the slitting mechanism along the PE film travel direction, and their height is lower than that of the flattening roller 4-1, so that the film material forms a tension arc. The discharge rollers 4-4 inside the equipment frame 1 are arranged in pairs and rotatably connected via bearings. Their surfaces are in contact with each other, and the drive gears 4-5 at one end mesh with each other. The lower discharge roller 4-4 is driven by a motor, which drives the upper discharge roller 4-4 to rotate synchronously in the opposite direction through the gears. During operation, the PE film enters from one end of the equipment frame 1, is first tensioned by the feed tension roller 4-2, then flattened by the front flattening roller 4-1 before entering the slitting area. The slitted film is then flattened again by the rear flattening roller 4-1, and tension is maintained by the discharge tension roller 4-3. Finally, it enters the discharge roller 4-4, and the transmission gear 4-5 drives the two rollers to clamp the film and convey it to the other end of the equipment frame 1. The flattening roller 4-1 ensures the film enters the slitting process flat, the tension roller maintains appropriate tension to prevent the film from loosening or overstretching, and the synchronous transmission of the discharge roller 4-4 ensures a stable conveying speed that matches the rotation rhythm of the slitting blades 3-3. This assembly, through the coordinated action of multiple sets of rollers, achieves smooth conveying of the PE film, providing stable feed for the slitting operation and improving slitting accuracy and continuity.

[0026] For example, such as Figure 1 As shown, the upper surface of the equipment rack 1 located in the inner cavity 2 is an arc-shaped transition structure surface.

[0027] In some examples, the upper surface of the device rack 1 located in the inner cavity 2 is an arc-shaped transition structure, which guides the debris generated during slitting to gather towards the long suction port 3-4. The arc-shaped surface reduces dead corners for debris accumulation, making it easier for debris to enter the suction channel under the action of gravity and airflow. At the same time, the arc-shaped transition avoids the scratches that right-angle structures may cause to the PE film, protects the edges of the film material from damage, and improves the quality of the film material after slitting.

[0028] For example, such as Figure 4 As shown, the size of the filter screen 3-10 is smaller than the opening size at the top of the dust collection box 3-7.

[0029] In some examples, the filter screen 3-10 is smaller than the opening at the top of the dust collection box 3-7, facilitating its installation, removal, and replacement. When cleaning or replacing the filter screen 3-10, it can be easily removed from the opening without disassembling other parts of the dust collection box 3-7. This design makes filter maintenance more convenient, ensures long-term stable filtration performance, and guarantees continuous and efficient operation of the dust removal mechanism.

[0030] In actual use: The PE film enters from one end of the equipment frame 1, is tensioned by the feeding tension roller 4-2, flattened by the flattening roller 4-1, and sent to the slitting area. The rotating shaft 3-1 drives the slitting blade 3-3 to rotate at high speed, slitting the PE film through the horizontal opening 3-2. The debris generated during slitting is drawn into the inner cavity 2 through the dust suction port 3-4 under negative pressure, then falls into the air collection hood 3-5, and is finally sucked into the dust collection box 3-7. The debris is filtered by the filter screen 3-10 and stored in the box. The slitting PE film is kept under tension by the discharge tension roller 4-3 and is clamped and conveyed to the other end of the equipment frame 1 by the discharge roller 4-4. No manual cleaning of debris is required throughout the process. The dust collection box 3-7 is fixed by the limiting frame 3-8 and can be flexibly disassembled for cleaning. The telescopic pipe 3-11 is adapted for connection to the negative pressure equipment.

[0031] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A PE film slitting machine with a chip removal mechanism, characterized in that, include: The equipment rack (1) and the inner cavity (2) are formed inside the equipment rack (1); A conveying assembly (4) is disposed in the equipment rack (1); The chip removal assembly (3) is disposed in the device frame (1) and the inner cavity (2); The chipping assembly (3) includes a rotating shaft (3-1), which is rotatably connected in the inner cavity (2). The rotating shaft (3-1) is driven to rotate by electricity. The top of the inner cavity (2) has several horizontal openings (3-2). Several cutting blades (3-3) are fixedly connected to the rotating shaft (3-1). The top of the cutting blades (3-3) passes through the horizontal openings (3-2) and is located on the outside. The top of the equipment rack (1) is provided with a pair of long suction ports (3-4), which are connected to the interior of the inner cavity (2). The bottom of the equipment rack (1) is provided with a gas collection hood (3-5), and the bottom of the gas collection hood (3-5) is provided with a docking sleeve (3-6). The bottom of the docking sleeve (3-6) is fitted with a dust collection box (3-7), and the top of the dust collection box (3-7) is rotatably connected with a pair of limiting frames (3-8). The limiting frames (3-8) fit against the top of the docking sleeve (3-6), and a pair of inner frames (3-9) are provided at the top inside the dust collection box (3-7). A filter screen (3-10) is installed between the inner frames (3-9). A telescopic pipe (3-11) is provided on one side of the dust collection box (3-7). A connecting sleeve (3-12) is provided at one end of the telescopic pipe (3-11). A connecting flange (3-13) is provided on the connecting sleeve (3-12).

2. The PE film slitting machine with a chip removal mechanism according to claim 1, characterized in that, The conveying assembly (4) includes a pair of flattening rollers (4-1), both of which are rotatably connected inside the equipment frame (1). The flattening rollers (4-1) are attached to the top surface of the equipment frame (1), and a feeding tension roller (4-2) is rotatably connected inside the equipment frame (1).

3. The PE film slitting machine with a chip removal mechanism according to claim 2, characterized in that, The equipment frame (1) is rotatably connected to a discharge tension roller (4-3), and a pair of discharge rollers (4-4) are rotatably connected inside the equipment frame (1). The surfaces of the discharge rollers (4-4) are in contact with each other, and a transmission gear (4-5) is provided at one end of each discharge roller (4-4). One of the discharge rollers (4-4) is driven to rotate by electricity.

4. The PE film slitting machine with a chip removal mechanism according to claim 1, characterized in that, The upper surface of the device rack (1) located in the inner cavity (2) is an arc-shaped transition structure surface.

5. The PE film slitting machine with a chip removal mechanism according to claim 1, characterized in that, The size of the filter screen (3-10) is smaller than the opening size at the top of the dust collection box (3-7).

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