PE wrapping film cutting device

Abstract

The utility model relates to PE film processing technical field, concretely is a kind of PE winding film cutting device, including machine plate, the side surface fixed mounting of machine plate has roll stock frame, feeding frame and shearing bin, by setting control distance screw rod, control distance plate, spring, shearing frame, cutting knife, utilize the synergies of these structures, control distance screw rod cooperation control distance slide bar, make control distance plate can accurate lift, to control the cutting depth of cutting knife, satisfy half cut or complete cut two kinds of needs, pressing plate provides pressure by spring, ensure the flatness of cutting edge, by the sliding connection of pressing plate side surface and shearing frame inner side, the movement trajectory of cutting knife is restricted, guarantee the perpendicularity of cutting process, when cutting knife cuts into film, the fitting structure of control distance plate and cutting knife seat provides additional rigid support, reduce the deformation risk of cutting knife, prolong tool life, realize the control of PE winding film cutting depth, stability and precision, improve the efficiency and quality of packaging operation.

Description

Technical Field

[0001] This utility model relates to the field of PE film processing technology, and in particular to a PE stretch film cutting device. Background Technology

[0002] PE stretch film, a flexible material widely used in logistics, warehousing, and industrial packaging, directly impacts packaging quality and production costs due to the precision and efficiency of its cutting process. Currently, common cutting devices often employ mechanical cutting or thermal melting techniques, which suffer from problems such as rough edges, film shrinkage and deformation due to heat, and excessive blade wear. This leads to reduced material utilization and increased equipment downtime for maintenance. Announcement No. CN219929202U discloses a PE stretch film cutting device, relating to the field of PE film processing technology. The device includes a base with two symmetrically mounted mounting brackets on one side of the base's top. A roller is rotatably mounted on the inner wall of each mounting bracket. A through-hole box is fixedly mounted on the other side of the base's top, and a receiving seat is fixedly mounted on the bottom of the back of the through-hole box. A cutter is positioned on the top of the receiving seat, and the bottom ends of two tension springs are connected to the top of the cutter. This invention uses a through-hole in the through-box to pass through the stretch film. When cutting is required, multiple hydraulic push rods can be driven to operate synchronously, thus lowering the cutter. The sharp bottom of the cutter confines the stretch film inside the receiving seat and cuts it, achieving a cutting effect. After cutting, the hydraulic push rods retract, and the cutter is no longer under force. The tension spring contracts, causing the cutter to rise and leave the receiving seat, thus not affecting the normal discharge of the stretch film through the through-hole. This invention uses a through-box, receiving seat, and cutter, confining the stretch film inside the receiving seat and cutting it with the sharp bottom of the cutter. However, when dealing with film materials of different thicknesses, it is necessary to achieve a partial cut with a tail. The film material is not completely severed after cutting, which makes it difficult to adjust the cutting depth for PE films of different thicknesses when continuing to wrap. This requires improvement. Utility Model Content

[0003] The purpose of this utility model is to solve the technical problems mentioned in the background art.

[0004] This utility model adopts the following technical solution: a PE stretch film cutting device, including a machine plate, a bracket fixedly installed on the lower surface of the machine plate, a roll rack, a feeding rack and a shearing chamber fixedly installed on the side of the machine plate, a roll motor fixedly installed on the surface of the roll rack, a roll drum fixedly installed at the output end of the roll motor, a feeding cylinder and a limiting cylinder slidably connected to the surface of the feeding rack, a cylinder, a distance control motor and a distance control slide rod fixedly installed on the surface of the shearing chamber, a shearing frame fixedly installed at the output end of the cylinder, a distance control threaded rod fixedly installed at the output end of the distance control motor, a distance control plate threadedly connected to the surface of the distance control threaded rod, a cutting groove and a sliding groove formed on the surface of the distance control plate, a spring groove formed on the bottom surface of the shearing frame, a spring fixedly installed on the surface of the spring groove, a pressure plate fixedly installed at the other end of the spring, a cutter seat fixedly installed on the surface of the pressure plate by screws, and a cutter fixedly installed on the surface of the cutter seat.

[0005] Preferably, the distance control threaded rod is a bidirectional threaded rod, and the distance control threaded rod and the distance control slide rod are symmetrically distributed on both sides of the distance control plate and have the same length. The surface of the distance control slide rod is slidably connected to the surface of the slide groove. Here, the bidirectional threaded rod, together with the symmetrical and equal-length distance control slide rod, can accurately and stably adjust the position of the distance control plate, thereby precisely controlling the cutting height of the cutter and meeting the needs of PE stretch film cutting in different packaging scenarios. The sliding connection between the distance control slide rod and the slide groove not only guides the lifting and lowering of the distance control plate, but also effectively prevents it from shifting or shaking during movement, ensuring the positional accuracy of the cutter when it contacts the stretch film, ensuring a neat and smooth cutting edge, and reducing film waste caused by cutting errors.

[0006] Preferably, there are three springs evenly distributed on the bottom surface of the shearing frame, and the side of the pressure plate can be slidably connected to the inner side of the shearing frame via the springs. Here, the three springs evenly distributed on the bottom surface of the shearing frame, together with the pressure plate, can improve the stability and cutting quality of the cutting process. The three evenly distributed springs can make the pressure distribution at each force point more balanced when the pressure plate contacts the wrapping film, avoiding situations where the local pressure is too high or too low, ensuring that the film material can be stably pressed before being cut, effectively preventing the film material from wrinkling or shifting during the cutting process, thereby obtaining a neater cutting edge.

[0007] Preferably, the surface shape of the cutter is the same as the surface shape of the cutter groove, and the distance control plate is located directly below the cutter holder and can be attached to the surface of the cutter holder via a distance control motor. Here, the cutter receives sufficient support from the cutter groove during cutting, preventing wobbling or offset, thus ensuring the perpendicularity and accuracy of the cut, resulting in a neater and smoother cut edge. The attachment of the distance control plate to the surface of the cutter holder ensures that the cutter maintains a stable position during cutting, guaranteeing consistent cutting results even when cutting thicker or harder PE wrapping film. The distance control plate precisely controls the cutting depth of the cutter, ensuring that the cutter only cuts off a portion of the film material while preserving the connection points, achieving the desired cutting effect.

[0008] Preferably, the shearing chamber has a motor slot on its surface, a cutting plate motor is fixedly mounted on the surface of the motor slot, a cutting plate threaded rod is fixedly mounted on the output end of the cutting plate motor, and a cutting plate slide rod is fixedly mounted inside the shearing chamber. A cutting plate is threadedly connected to the surface of the cutting plate threaded rod. Here, the cutting plate serves as a rigid cutting support platform for the PE film, effectively preventing displacement or wrinkling of the film due to uneven force during cutting, ensuring the stability of the cutting process and the consistency of the cutting effect. The cutting plate threaded rod allows the cutting plate to move up and down along the cutting plate slide rod, achieving precise height adjustment. The position of the cutting plate can be flexibly adjusted according to the actual height of the roll and the characteristics of different specifications of PE stretch film, ensuring a suitable height difference between the cutting plate and the roll, avoiding problems such as poor film conveying or cutting difficulties caused by inconsistent heights. The adjustable height of the cutting plate also allows the device to adapt to PE stretch film of different thicknesses, further improving the versatility and applicability of the device.

[0009] Preferably, the threaded rod of the cutting plate is a double-threaded rod, and the threaded rod and the sliding rod of the cutting plate are of the same length. The surface of the sliding rod is slidably connected to the interior of the cutting plate. This design enables efficient and stable lifting of the cutting plate while ensuring its balance and reliability during movement. When the cutting plate motor drives the threaded rod to rotate, the sliding connection between the sliding rod and the interior of the cutting plate provides precise guidance for the lifting of the cutting plate, ensuring that the cutting plate does not deviate or wobble during movement, thus improving the stability and accuracy of the cutting.

[0010] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0011] 1. In this utility model, by setting up a distance control threaded rod, a distance control plate, a spring, a shearing frame, and a cutter, the synergistic effect of these structures—the distance control threaded rod and the distance control slide rod—allows the distance control plate to rise and fall precisely, thereby controlling the cutting depth of the cutter and meeting both partial and complete cutting requirements. The pressure plate provides pressure through the spring to ensure the flatness of the cutting edge. The sliding connection between the side of the pressure plate and the inside of the shearing frame constrains the movement trajectory of the cutter, ensuring the perpendicularity of the cutting process. When the cutter cuts into the film, the fit structure between the distance control plate and the cutter seat provides additional rigid support, reducing the risk of cutter deformation, extending the cutter life, and achieving control over the cutting depth, stability, and precision of PE wrapping film, thereby improving the efficiency and quality of packaging operations.

[0012] 2. In this utility model, by setting up a cutting plate motor, a cutting plate threaded rod, a cutting plate slide rod, and a cutting plate, the synergistic effect of these structures allows the cutting plate motor to drive the cutting plate threaded rod to achieve precise lifting and lowering adjustment of the support platform. This not only enables the cutting plate to quickly adapt to PE wrapping film of different thicknesses, but also ensures that the cutting plate remains highly parallel during movement through the guiding effect of the equal-length slide rod, avoiding cutting deviations caused by tilting. When the feeding cylinder transports the film to the cutting area, the rigid support platform provided by the cutting plate effectively resists the pressure of the cutter, preventing the film from denting or shifting at the moment of cutting, ensuring the flatness of the cut surface. The adjustable height of the cutting plate solves the problem of the height difference between the roll and the cutting area. Through linkage with the distance control structure, the support height can be adjusted according to the roll, keeping the film in the optimal cutting position at all times, improving the cutting quality, maintaining stable performance of the device during continuous operation, and improving the production efficiency of PE wrapping film cutting. Attached Figure Description

[0013] Figure 1 This utility model provides a schematic diagram of a PE stretch film cutting device;

[0014] Figure 2 This utility model provides a schematic diagram of the shearing chamber structure of a PE stretch film cutting device;

[0015] Figure 3 This utility model provides a schematic diagram of the distance control structure of a PE stretch film cutting device;

[0016] Figure 4 This utility model provides a schematic diagram of the shearing structure of a PE stretch film cutting device;

[0017] Figure 5 This utility model provides a schematic diagram of the cutting plate adjustment structure of a PE wrapping film cutting device;

[0018] Figure 6 This utility model presents a schematic diagram of the cutting plate structure of a PE wrapping film cutting device.

[0019] Legend:

[0020] 1. Machine plate; 2. Leg frame; 3. Roll rack; 4. Roll motor; 5. Roll drum; 6. Feed rack; 7. Feed cylinder; 8. Limiting cylinder; 9. Shearing chamber; 10. Cylinder; 11. Distance control motor; 12. Distance control slide bar; 13. Distance control threaded rod; 14. Distance control plate; 15. Cutting slot; 16. Slide groove; 17. Spring slot; 18. Spring; 19. Pressure plate; 20. Cutting holder; 21. Screw; 22. Cutting blade; 23. Shearing frame; 24. Motor slot; 25. Cutting plate motor; 26. Cutting plate threaded rod; 27. Cutting plate slide bar; 28. Cutting plate. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] Example 1

[0024] Please see Figures 1-4This utility model provides a technical solution: a PE stretch film cutting device, including a machine plate 1, which provides a support platform for the entire device, and fixedly connects a support frame 2, a roll rack 3, a feeding rack 6, and a cutting chamber 9 to ensure the stability of each component. The support frame 2 is fixedly installed on the lower surface of the machine plate 1 to support the machine plate 1 and provide overall stability of the device. The height is adjustable to adapt to different working environments. The roll rack 3, the feeding rack 6, and the cutting chamber 9 are fixedly installed on the side of the machine plate 1. The roll rack 3 is fixedly installed on the surface of the roll rack 3, and a roll 5 is fixedly installed at the output end of the roll rack 4. The feeding rack 6 is slidably connected to a feeding cylinder 7 and a limiting cylinder 8. The cutting chamber 9 is fixedly installed on the surface of a cylinder 10, a distance control motor 11, and a distance control slide rod 12. The cylinder 10... A shearing frame 23 is fixedly installed at the output end, and a distance control threaded rod 13 is fixedly installed at the output end of the distance control motor 11. The distance control threaded rod 13 is a bidirectional threaded rod. The distance control threaded rod 13 and the distance control slide rod 12 are symmetrically distributed on both sides of the distance control plate 14 and have the same length. The surface of the distance control slide rod 12 is slidably connected to the surface of the slide groove 16. Here, the bidirectional threaded rod, together with the symmetrical and equal-length distance control slide rod 12, can accurately and stably adjust the position of the distance control plate 14, thereby precisely controlling the cutting height of the cutter 22 to meet the needs of PE wrapping film cutting in different packaging scenarios. The sliding connection between the distance control slide rod 12 and the slide groove 16 provides guidance for the lifting and lowering of the distance control plate 14, while effectively preventing it from shifting or shaking during movement, ensuring the cutter's performance. The positional accuracy of the 22 contact with the stretch film ensures a neat and smooth cutting edge, reducing film waste caused by cutting errors. A control plate 14 is threadedly connected to the surface of the control threaded rod 13. The control plate 14 has a cutting groove 15 and a sliding groove 16. A spring groove 17 is formed on the bottom surface of the shearing frame 23, and three springs 18 are fixedly installed on the surface of the spring groove 17. The side of the pressure plate 19 can slide between the springs 18 and the inner side of the shearing frame 23. Here, the three springs 18, evenly distributed on the bottom surface of the shearing frame 23, work with the pressure plate 19 to improve the stability and cutting quality of the cutting process. The three evenly distributed springs 18 can make the pressure plate 19... When contacting the stretch film, the pressure distribution at each stress point is more even, avoiding excessive or insufficient local pressure. This ensures the film material is stably compressed before cutting, effectively preventing wrinkles or displacement during the cutting process, resulting in cleaner cut edges. A pressure plate 19 is fixedly installed at the other end of the spring 18. A cutter holder 20 is fixedly installed on the surface of the pressure plate 19 by screws 21, supporting the cutter 22 and transmitting cutting force. The cutter 22 is fixedly installed on the surface of the cutter holder 20, and its surface shape is the same as that of the cutter groove 15. The distance control plate 14 is located directly below the cutter holder 20 and can be engaged with the surface of the cutter holder 20 via the distance control motor 11.During the cutting process, the cutter 22 receives ample support from the cutter groove 15, preventing wobbling or offset, thus ensuring the perpendicularity and precision of the cut and resulting in a neater and smoother cut edge. The control plate 14 fits snugly against the surface of the cutter holder 20, ensuring the cutter 22 maintains a stable position throughout the cutting process. Even when cutting thicker or harder PE wrapping film, it guarantees consistent cutting results. The control plate 14 precisely controls the cutting depth of the cutter 22, ensuring that it only cuts off a portion of the film material while preserving the connection points, achieving the desired cutting effect.

[0025] Example 2

[0026] Please see Figures 5-6 The surface of the shearing chamber 9 has a motor slot 24 for mounting a cutting plate motor 25, protecting the motor and providing stable support. The cutting plate motor 25 is fixedly mounted on the surface of the motor slot 24, driving the cutting plate threaded rod 26 to rotate and controlling the lifting and lowering of the cutting plate 28. The output end of the cutting plate motor 25 is fixedly mounted with the cutting plate threaded rod 26, which drives the cutting plate 28 to lift and lower synchronously along the cutting plate slide rod 27 through forward and reverse rotation. The cutting plate slide rod 27 is fixedly mounted inside the shearing chamber 9 and slidably connected to the inside of the cutting plate 28, providing guidance for the cutting plate 28. To ensure smooth lifting and lowering, the surface of the threaded rod 26 is threaded with a cutting plate 28, which serves as a rigid support platform for the film material. It works in conjunction with the cutter 22 to complete the cutting action. The height is adjustable to accommodate film materials of different thicknesses and the height difference of the roll 5. Here, the cutting plate 28 acts as a rigid cutting support platform for the PE film, effectively preventing displacement or wrinkling of the film due to uneven force during cutting, ensuring the stability of the cutting process and the consistency of the cutting effect. The threaded rod 26 allows the cutting plate 28 to move along the cutting plate slide rod 27. The downward movement allows for precise height adjustment. The position of the cutting plate 28 can be flexibly adjusted according to the actual height of the roll 5 and the characteristics of different specifications of PE stretch film, ensuring a suitable height difference between the cutting plate 28 and the roll 5. This avoids problems such as poor film transport or cutting difficulties caused by inconsistent heights. The adjustable height of the cutting plate 28 also allows the device to adapt to PE stretch film of different thicknesses, further improving the device's versatility and applicability. The cutting plate threaded rod 26 is a bidirectional threaded rod, and its length is the same as that of the cutting plate slide rod 27. The surface of the cutting plate slide rod 27 is slidably connected to the interior of the cutting plate 28. This enables efficient and stable lifting and lowering of the cutting plate 28, while ensuring its balance and reliability during movement. When the cutting plate motor 25 drives the threaded rod to rotate, the sliding connection between the cutting plate slide rod 27 and the interior of the cutting plate 28 provides precise guidance for the lifting and lowering of the cutting plate 28, ensuring that the cutting plate 28 does not deviate or shake during movement, thus improving cutting stability and accuracy.

[0027] Working principle: When dealing with film materials of different thicknesses, it is necessary to achieve a partial cut with a tail, so that the film material is not completely severed after cutting, making it easier to continue winding. When it is necessary to adjust the cutting depth for PE films of different thicknesses, the cutting plate motor 25 drives the cutting plate threaded rod 26 to rotate, so that the cutting plate 28 moves to a height suitable for the film material. The distance control motor 11 drives the distance control threaded rod 13 to rotate, so that the distance control plate 14 moves to the preset cutting depth position. The cylinder 10 drives the shearing frame 23 to descend, and the spring 18 applies pressure evenly to the pressure plate 19, cutting the film. The frame 23 continues to descend, and the cutter 22 cuts into the membrane material. The surface shape of the cutter 22 matches the cutter groove 15, and the distance control plate 14 fits against the cutter seat 20. The cutter 22 stops when it cuts to the preset depth, achieving a half-cut with a tail. After the cutting is completed, the cylinder 10 drives the shearing frame 23 to rise and reset, the spring 18 returns to its original state, and the cutter 22 leaves the membrane material, completing the cutting cycle. This not only ensures the cutting accuracy of membrane materials of different thicknesses, but also protects the blade and the pad by limiting the cutting depth of the cutter 22, thus extending the service life of the equipment.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A PE stretch film cutting device, comprising a machine plate (1), characterized in that: A bracket (2) is fixedly installed on the lower surface of the machine plate (1). A winding rack (3), a feeding rack (6), and a shearing chamber (9) are fixedly installed on the side of the machine plate (1). A winding motor (4) is fixedly installed on the surface of the winding rack (3). A winding drum (5) is fixedly installed at the output end of the winding motor (4). A feeding drum (7) and a limiting drum (8) are slidably connected on the surface of the feeding rack (6). A cylinder (10), a distance control motor (11), and a distance control slide rod (12) are fixedly installed on the surface of the shearing chamber (9). A shearing frame (23) is fixedly installed at the output end of the cylinder (10). The output of the distance control motor (11) is... A distance control threaded rod (13) is fixedly installed at one end. A distance control plate (14) is threadedly connected to the surface of the distance control threaded rod (13). A cutter groove (15) is opened on the surface of the distance control plate (14). A sliding groove (16) is opened on the surface of the distance control plate (14). A spring groove (17) is opened on the bottom surface of the shearing frame (23). A spring (18) is fixedly installed on the surface of the spring groove (17). A pressure plate (19) is fixedly installed at the other end of the spring (18). A cutter seat (20) is fixedly installed on the surface of the pressure plate (19) by screws (21). A cutter (22) is fixedly installed on the surface of the cutter seat (20).

2. The PE stretch film cutting device according to claim 1, characterized in that: The distance control threaded rod (13) is a bidirectional threaded rod. The distance control threaded rod (13) and the distance control slide rod (12) are symmetrically distributed on both sides of the distance control plate (14) and have the same length. The surface of the distance control slide rod (12) is slidably connected to the surface of the slide groove (16).

3. The PE stretch film cutting device according to claim 1, characterized in that: There are three springs (18) evenly distributed on the bottom surface of the shear frame (23), and the side of the pressure plate (19) can be slidably connected between the springs (18) and the inner side of the shear frame (23).

4. The PE stretch film cutting device according to claim 1, characterized in that: The surface shape of the cutter (22) is the same as the surface shape of the cutter groove (15). The distance control plate (14) is located directly below the cutter seat (20) and can be attached to the surface of the cutter seat (20) through the distance control motor (11).

5. The PE stretch film cutting device according to claim 1, characterized in that: The shearing chamber (9) has a motor slot (24) on its surface. A cutting plate motor (25) is fixedly installed on the surface of the motor slot (24). A cutting plate threaded rod (26) is fixedly installed at the output end of the cutting plate motor (25). A cutting plate slide rod (27) is fixedly installed inside the shearing chamber (9). A cutting plate (28) is threadedly connected to the surface of the cutting plate threaded rod (26).

6. The PE stretch film cutting device according to claim 5, characterized in that: The cutting plate threaded rod (26) is a bidirectional threaded rod. The cutting plate threaded rod (26) has the same length as the cutting plate slide rod (27). The surface of the cutting plate slide rod (27) is slidably connected to the interior of the cutting plate (28).

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