Slitting device for preparing multi-layer composite polyethylene film

Abstract

The utility model discloses a slitting device for preparing a multi-layer composite polyethylene film, which relates to the technical field of polyethylene film slitting, and comprises a base, the top of the base is fixedly connected with a top plate through a support rod, the top of the top plate is provided with an air cylinder, the telescopic end of the air cylinder is fixedly connected with a lifting seat, and the bottom of the lifting seat is symmetrically provided with mounting plates; a limiting assembly is mounted on one side of the mounting plate, a cutter is movably connected to the bottom of the mounting plate, and mounting assemblies are symmetrically mounted in the cutter. By the adoption of the structure, the position of the cutter can be adjusted through simple operation of pulling the pull handle downwards and loosening the pull handle, additional tools are not needed, the operation steps are greatly simplified, the tedious process of repeatedly screwing and loosening a nut when the nut is twisted for adjustment in the prior art is omitted, the cutter can be rapidly moved to the needed position, and the cutter can be conveniently and rapidly moved to the needed position. And the working efficiency is obviously improved.

Description

Technical Field

[0001] This utility model belongs to the field of polyethylene film slitting, and specifically relates to a slitting device for preparing multilayer composite polyethylene films. Background Technology

[0002] Multilayer composite polyethylene film is a polymer material made by laminating two or more layers of polyethylene (PE) film through processes such as blown film, casting, or coating. Its structure can be designed as needed, such as using high-toughness PE for the inner layer and adding anti-aging additives to the outer layer, combining high tensile strength, puncture resistance, chemical corrosion resistance, and good heat-sealing properties. It is widely used in food packaging (such as frozen food bags), chemical raw material packaging, agricultural mulch film, and industrial product moisture and dust protection. Through multilayer structure optimization, the shortcomings of single-material performance can be improved, meeting the functional requirements of packaging materials in different scenarios. It is one of the commonly used materials in the modern packaging field. The slitting device for multilayer composite polyethylene film preparation is mainly used to slit the laminated wide film into narrow products of a specified width.

[0003] Announcement No. "CN219132434U" discloses a polyethylene film slitting device, relating to the technical field of slitting devices. This utility model includes a base, with a fixed frame fixedly connected to the top of the base. A cylinder is located at the center of the top of the fixed frame, and a lifting plate is connected to the drive end of the cylinder. An adjustment assembly is located at the bottom of the lifting plate. A cutter is connected to the adjustment assembly internally via a clamping component. The adjustment assembly includes a fixed plate, a fixed screw, a mounting plate, an adjusting nut, and scale lines. The clamping component includes a clamping sleeve, a limiting plate, a rigid spring, and a pin. This utility model is a polyethylene film slitting device. Through the adjustment and clamping components, the structure of the polyethylene film slitting device is simplified, and operation is made easier. It facilitates the clamping of the cutter, making installation and disassembly easy. It also facilitates the adjustment of the distance between the cutters, allowing for the cutting of PE film of different widths, thus improving the cutting efficiency and quality of the PE film.

[0004] Although the above-mentioned utility model makes it easy to adjust the distance between the cutters, which facilitates cutting PE film of different widths and improves the cutting efficiency and quality of PE film, it requires manual rotation of each adjusting nut one by one. Adjusting multiple sets of cutters is time-consuming, especially when the spacing needs to be adjusted frequently. The operation is cumbersome and affects the production rhythm. Moreover, it is difficult to ensure that the spacing of each cutter is completely consistent when the nuts are manually rotated. Uneven force or visual errors may cause deviations in the cutting width, affecting the product accuracy. Utility Model Content

[0005] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a slitting device for the preparation of multilayer composite polyethylene film, so as to solve the problem that each adjusting nut needs to be manually rotated one by one, and the adjustment of multiple sets of cutters is time-consuming. Especially when the spacing needs to be adjusted frequently, the operation is cumbersome and affects the production rhythm. Moreover, it is difficult to ensure that the spacing of each cutter is completely consistent when the nuts are manually rotated. The slitting width may be deviated due to uneven force or visual error, which affects the product accuracy.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A slitting device for preparing multilayer composite polyethylene film includes a base, a top plate fixedly connected to the top of the base by a support rod, a cylinder installed on the top of the top plate, a lifting seat fixedly connected to the telescopic end of the cylinder, mounting plates symmetrically arranged at the bottom of the lifting seat, a limit component installed on one side of the mounting plate, a cutter movably connected to the bottom of the mounting plate, and mounting components symmetrically installed inside the cutter.

[0008] The limiting assembly includes a receiving cavity, a first return spring, a movable plate, a connecting post, a handle, and a limiting post. An assembly block is fixedly connected to one side of the mounting plate. The assembly block has a receiving cavity inside. The first return spring is fixedly connected to one side of the receiving cavity. The movable plate is fixedly connected to the other end of the first return spring. The movable plate is slidably connected to the inside of the receiving cavity. A connecting post is fixedly connected to one side of the movable plate. The other end of the connecting post extends out of the assembly block and is fixedly connected to the handle. A limiting post is fixedly connected to the other side of the movable plate. Limiting holes are symmetrically opened at equal intervals at the bottom of the lifting seat. The limiting post and the limiting hole are plugged in. The position of the cutter can be adjusted by simply pulling down the handle and releasing the handle. Compared with adjusting by twisting the nut, no additional tools are needed, the operation steps are greatly simplified, and the tedious process of repeatedly tightening and loosening the nut is eliminated when adjusting by twisting the nut in the traditional way. The cutter can be quickly moved to the required position, which significantly improves work efficiency.

[0009] As a preferred technical solution, the bottom of the lifting seat is symmetrically fixedly connected with fixed seats, and guide rods are symmetrically fixedly connected between the fixed seats. The mounting plate is sleeved on the outside of the guide rods, and the mounting plate and the guide rods are slidably connected. The guide rods are symmetrically arranged and slidably connected with the mounting plate, providing rigid guidance for the up and down movement of the mounting plate, avoiding deviation or shaking caused by uneven force, ensuring that the cutter slides smoothly in the vertical direction, and improving the adjustment accuracy.

[0010] As a preferred technical solution, the mounting assembly includes a cavity, a second return spring, a moving block, and a locking block. The cutter has symmetrically symmetrical cavities inside. A second return spring is fixedly connected to one side of each cavity, and a moving block is fixedly connected to the other end of the second return spring. The moving block is slidably connected to the cavity. A locking block is fixedly connected to the other side of the moving block, extending beyond the cutter's outer side. A mounting groove is provided at the bottom of the mounting plate, and the cutter is inserted into the mounting groove. Locking grooves are provided on both sides of the mounting groove, and the locking block is snapped into the locking groove. An unlocking block is slidably connected inside the locking groove, and guide blocks are fixedly connected to both sides of the unlocking block. Guide grooves are also provided on both sides of the locking groove, and the guide blocks are slidably connected to the guide grooves. This allows the cutter to be installed simply by inserting it into the mounting groove, automatically triggering the locking block's action through pressure. This eliminates the need for complex assembly steps and specialized tools, lowering the operational threshold for cutting cutter replacement. Furthermore, it eliminates the need to disassemble numerous parts or perform tedious adjustments; locking is completed the instant the cutter is inserted, significantly shortening replacement time and improving the equipment's continuous working capability.

[0011] As a preferred technical solution, a buffer plate is slidably sleeved on the outside of the support rod, and a buffer spring is sleeved on the outside of the support rod. The two ends of the buffer spring are fixedly connected to the bottom of the buffer plate and the top of the base, respectively. A guide plate is slidably sleeved on the outside of the support rod, and the other end of the guide plate is fixedly connected to the lifting seat. A pressure block is fixedly connected to the bottom of the guide plate. The buffer spring and the buffer plate cooperate to effectively absorb the impact force and reduce the transmission of vibration when the lifting seat moves, so as to avoid damage to the internal parts of the equipment due to severe vibration and extend the service life of the equipment.

[0012] In summary, the present invention has the following main advantages:

[0013] First, in this utility model, pulling down the handle causes the connecting column to move the moving plate and the limiting column against the first return spring. The first return spring is compressed, and at the same time, the limiting column retracts into the receiving cavity, pushing the mounting plate. The mounting plate causes the cutter to slide on the outside of the guide rod. After the cutter is moved to the desired position, the handle is released, the first return spring is reset, and the moving plate rebounds, causing the limiting column to pop out and engage with the limiting hole. The cutter position can be adjusted by simply pulling down and releasing the handle. Compared with adjusting by twisting the nut, no additional tools are needed, the operation steps are greatly simplified, and the tedious process of repeatedly tightening and loosening the nut is eliminated when adjusting by twisting the nut in the traditional way. The cutter can be moved to the desired position quickly, which significantly improves work efficiency.

[0014] Secondly, in this utility model, the cutter is inserted into the mounting groove at the bottom of the mounting plate. During the insertion process, the squeezing force applies pressure to the inclined surface of the locking block, causing the locking block to drive the moving block to press against the second return spring. The second return spring is compressed, and at the same time, the locking block retracts into the cavity. When the locking block moves to the locking groove, the second return spring resets, and the locking block pops out and engages with the locking groove for fixation. This allows the installation of the cutter to be completed simply by inserting it into the mounting groove, relying on the squeezing force to automatically trigger the locking block's action. There is no need for complicated assembly steps and professional tools, which lowers the operational threshold for replacing the cutter. Moreover, there is no need to disassemble a large number of parts or perform tedious debugging. Locking and fixing can be completed the moment the cutter is inserted, which greatly shortens the replacement time and improves the continuous working capacity of the equipment. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0016] Figure 2 This is a bottom-view three-dimensional structural diagram of the present invention;

[0017] Figure 3 This is a cross-sectional three-dimensional structural schematic diagram of the present invention;

[0018] Figure 4 This is the utility model Figure 3 Enlarged view of part A;

[0019] Figure 5 This is the utility model Figure 3 Enlarged view of part B.

[0020] Reference numerals: 1. Base; 2. Support rod; 3. Top plate; 4. Cylinder; 5. Lifting seat; 6. Guide plate; 7. Fixed seat; 8. Guide rod; 9. Mounting plate; 10. Assembly block; 11. Limiting component; 111. Receiving cavity; 112. First return spring; 113. Moving plate; 114. Connecting column; 115. Pull handle; 116. Limiting column; 12. Limiting hole; 13. Cutter; 14. Mounting groove; 15. Mounting component; 151. Cavity; 152. Second return spring; 153. Moving block; 154. Locking block; 16. Locking groove; 17. Unlocking block; 18. Guide groove; 19. Guide block; 20. Pressure block; 21. Buffer plate; 22. Buffer spring. Detailed Implementation

[0021] Example

[0022] refer to Figures 1 to 5The multilayer composite polyethylene film preparation slitting device described in this embodiment includes a base 1, a top plate 3 fixedly connected to the top of the base 1 by a support rod 2, a cylinder 4 installed on the top of the top plate 3, a lifting seat 5 fixedly connected to the telescopic end of the cylinder 4, an installation plate 9 symmetrically provided at the bottom of the lifting seat 5, a limit component 11 installed on one side of the installation plate 9, a cutter 13 movably connected to the bottom of the installation plate 9, and an installation component 15 symmetrically installed inside the cutter 13;

[0023] The limiting assembly 11 includes a receiving cavity 111, a first return spring 112, a movable plate 113, a connecting post 114, a handle 115, and a limiting post 116. An assembly block 10 is fixedly connected to one side of the mounting plate 9. The assembly block 10 has a receiving cavity 111 inside. The first return spring 112 is fixedly connected to one side of the receiving cavity 111. The movable plate 113 is fixedly connected to the other end of the first return spring 112. The movable plate 113 is slidably connected to the inside of the receiving cavity 111. The connecting post 114 is fixedly connected to one side of the movable plate 113. The other end of the connecting post 114 extends out of the assembly block 10 and is fixedly connected to the handle 115. On the other side of the movable plate 113, a limiting post 116 is fixedly connected. The bottom of the lifting seat 5 is symmetrically provided with limiting holes 12 at equal intervals. The limiting post 116 is inserted into the limiting hole 12. Pulling down the handle 115 causes the connecting post 114 to drive the movable plate 113 and the limiting post 116 to press against the first return spring 112. The first return spring 112 is compressed, and at the same time the limiting post 116 retracts into the receiving cavity 111. Pushing the mounting plate 9, the cutter 13 is moved to the desired position. After releasing the handle 115, the first return spring 112 is reset, and the movable plate 113 rebounds, causing the limiting post 116 to pop out and insert into the limiting hole 12.

[0024] refer to Figure 2 The bottom of the lifting seat 5 is symmetrically fixedly connected with a fixed seat 7, and the fixed seats 7 are symmetrically fixedly connected with guide rods 8. The mounting plate 9 is sleeved on the outside of the guide rod 8. The mounting plate 9 and the guide rod 8 are slidably connected. When the limiting post 116 and the limiting hole 12 are inserted, the mounting plate 9 is pushed so that the mounting plate 9 drives the cutter 13 to slide on the outside of the guide rod 8.

[0025] refer to Figure 4The mounting assembly 15 includes a cavity 151, a second return spring 152, a moving block 153, and a locking block 154. The cutter 13 has symmetrically arranged cavities 151 inside. The second return spring 152 is fixedly connected to one side of each cavity 151, and the moving block 153 is fixedly connected to the other end of the second return spring 152. The moving block 153 is slidably connected to the cavity 151. The locking block 154 is fixedly connected to the other side of the moving block 153, and extends outward from the cutter 13. The mounting plate 9 has a mounting groove 14 at its bottom, and the cutter 13 is inserted into the mounting groove 14. Locking grooves 16 are provided on both sides of the mounting groove 14. The locking block 154 is engaged with the locking groove 16. When the cutter 13 is inserted into the mounting groove 14 at the bottom of the mounting plate 9, the squeezing force applies pressure to the inclined surface of the locking block 154, causing the locking block 154 to drive the moving block 153 to press against the second return spring 152. The second return spring 152 is compressed, and at the same time, the locking block 154 retracts into the cavity 151. When the locking block 154 moves to the locking groove 16, the second return spring 152 returns to its original position, and the locking block 154 pops out and engages with the locking groove 16 for fixation.

[0026] refer to Figure 4 An unlocking block 17 is slidably connected inside the locking groove 16. Guide blocks 19 are fixedly connected to both sides of the unlocking block 17. Guide grooves 18 are opened on both sides inside the locking groove 16. The guide blocks 19 and the guide grooves 18 are slidably connected. Pushing the unlocking block 17 causes it to slide inside the locking groove 16. The unlocking block 17 drives the guide blocks 19 to slide inside the guide grooves 18. The unlocking block 17 pushes the locking block 154, causing the locking block 154 to drive the moving block 153 to press against the second return spring 152. The second return spring 152 is compressed, and at the same time, the locking block 154 retracts into the cavity 151. The locking block 154 and the locking groove 16 are no longer engaged.

[0027] refer to Figure 1 A buffer plate 21 is slidably sleeved on the outside of the support rod 2, and a buffer spring 22 is sleeved on the outside of the support rod 2. The two ends of the buffer spring 22 are fixedly connected to the bottom of the buffer plate 21 and the top of the base 1, respectively. A guide plate 6 is slidably sleeved on the outside of the support rod 2, and the other end of the guide plate 6 is fixedly connected to the lifting seat 5. A pressure block 20 is fixedly connected to the bottom of the guide plate 6. When the cylinder 4 is activated and the lifting seat 5 is controlled to descend, the lifting seat 5 drives the guide plate 6 to slide on the outside of the guide rod 8. At the same time, the guide plate 6 drives the pressure block 20 to descend. The pressure block 20 presses against the buffer plate 21, and the buffer plate 21 presses against the buffer spring 22. The buffer spring 22 contracts to absorb and disperse the impact force.

[0028] Operating principle and advantages: First, insert the cutter 13 into the mounting groove 14 at the bottom of the mounting plate 9. During insertion, the squeezing force applies pressure to the inclined surface of the locking block 154, causing the locking block 154 to drive the moving block 153 to press against the second return spring 152. The second return spring 152 is compressed, and at the same time, the locking block 154 retracts into the cavity 151. When the locking block 154 moves to the locking groove 16, the second return spring 152 resets, and the locking block 154 pops out and engages with the locking groove 16. Then, pull down the handle 115, causing the connecting post 114 to drive the moving plate 113 and the limiting post 116 to press against the first return spring 112. The first return spring 112 is compressed, and at the same time, the limiting post 113 retracts into the cavity 151. Position post 116 retracts into the receiving cavity 111, pushing the mounting plate 9. The mounting plate 9 drives the cutter 13 to slide outside the guide rod 8. After the cutter 13 is moved to the desired position, the pull handle 115 is released, the first reset spring 112 resets, the moving plate 113 rebounds and drives the limiting post 116 to pop out and insert into the limiting hole 12. Finally, the cylinder 4 is started, and when the lifting seat 5 is controlled to descend, the lifting seat 5 drives the guide plate 6 to slide outside the guide rod 8. At the same time, the guide plate 6 drives the pressure block 20 to descend. The pressure block 20 presses against the buffer plate 21, and the buffer plate 21 presses against the buffer spring 22. The buffer spring 22 contracts to absorb and disperse the impact force. The cutter 13 performs the cutting operation on the polyethylene film on the base 1.

[0029] This utility model allows for easy adjustment of the cutter 13 position by simply pulling down and releasing the handle 115. Compared to adjusting by twisting the nut, no additional tools are required, greatly simplifying the operation. It also eliminates the tedious process of repeatedly tightening and loosening the nut during traditional adjustment, enabling the cutter 13 to be quickly moved to the desired position and significantly improving work efficiency.

Claims

1. A slitting device for preparing multilayer composite polyethylene film, comprising a base (1), characterized in that: The base (1) is fixedly connected to a top plate (3) by a support rod (2). A cylinder (4) is installed on the top of the top plate (3). A lifting seat (5) is fixedly connected to the telescopic end of the cylinder (4). An installation plate (9) is symmetrically provided at the bottom of the lifting seat (5). A limit component (11) is installed on one side of the installation plate (9). A cutter (13) is movably connected to the bottom of the installation plate (9). An installation component (15) is symmetrically installed inside the cutter (13). The limiting component (11) includes a receiving cavity (111), a first return spring (112), a moving plate (113), a connecting post (114), a handle (115), and a limiting post (116). An assembly block (10) is fixedly connected to one side of the mounting plate (9). The receiving cavity (111) is opened inside the assembly block (10). The first return spring (112) is fixedly connected to one side of the receiving cavity (111). The moving plate (113) is fixedly connected to the other end of the first return spring (112). The moving plate (113) is slidably connected to the inside of the receiving cavity (111). The connecting post (114) is fixedly connected to one side of the moving plate (113). The other end of the connecting post (114) extends out of the assembly block (10) and is fixedly connected to the handle (115). The limiting post (116) is fixedly connected to the other side of the moving plate (113).

2. The slitting device for preparing multilayer composite polyethylene film according to claim 1, characterized in that: The bottom of the lifting seat (5) is symmetrically provided with limit holes (12) at equal intervals, and the limit post (116) is inserted into the limit hole (12).

3. The slitting device for preparing multilayer composite polyethylene film according to claim 1, characterized in that: The bottom of the lifting seat (5) is symmetrically fixedly connected with a fixed seat (7), and the fixed seats (7) are symmetrically fixedly connected with guide rods (8). The mounting plate (9) is sleeved on the outside of the guide rods (8), and the mounting plate (9) and the guide rods (8) are slidably connected.

4. The slitting device for preparing multilayer composite polyethylene film according to claim 1, characterized in that: The mounting assembly (15) includes a cavity (151), a second return spring (152), a moving block (153), and a locking block (154). The cutter (13) has symmetrical cavities (151) inside. The second return spring (152) is fixedly connected to one side of the cavity (151), and the moving block (153) is fixedly connected to the other end of the second return spring (152). The moving block (153) is slidably connected to the cavity (151), and the locking block (154) is fixedly connected to the other side of the moving block (153). The other side of the locking block (154) extends out of the outside of the cutter (13).

5. The slitting device for preparing multilayer composite polyethylene film according to claim 4, characterized in that: The mounting plate (9) has a mounting groove (14) at the bottom. The cutter (13) is inserted into the mounting groove (14). Locking grooves (16) are provided on both sides inside the mounting groove (14). The locking block (154) is snapped into the locking groove (16).

6. The slitting device for preparing multilayer composite polyethylene film according to claim 5, characterized in that: The locking groove (16) is slidably connected to the unlocking block (17), and the unlocking block (17) is fixedly connected to both sides of the guide block (19). The locking groove (16) is provided with guide grooves (18) on both sides of the inside, and the guide block (19) and the guide groove (18) are slidably connected.

7. The slitting device for preparing multilayer composite polyethylene film according to claim 1, characterized in that: A buffer plate (21) is slidably sleeved on the outside of the support rod (2), and a buffer spring (22) is sleeved on the outside of the support rod (2). The two ends of the buffer spring (22) are fixedly connected to the bottom of the buffer plate (21) and the top of the base (1) respectively. A guide plate (6) is slidably sleeved on the outside of the support rod (2). The other end of the guide plate (6) is fixedly connected to the lifting seat (5). A pressure block (20) is fixedly connected to the bottom of the guide plate (6).

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