Automatic laying device for plastic film cover for storage

Abstract

The application relates to the field of packaging devices, and particularly discloses an automatic plastic film cover laying device for storage, which comprises a loading module, a lifting module for driving the loading module to lift and a moving module for driving the loading module to move, and the loading module comprises a clamping mechanism for clamping the film cover. The application has the effects of reducing the danger and labor intensity when a worker sets the film cover.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of packaging devices, in particular to an automatic laying device for plastic film covers used in storage. BACKGROUND

[0002] Tobacco leaves are the most important basic raw material in the production of cigarette industry. In order to improve their combustion characteristics and smoking experience, it is necessary to adjust their chemical composition, which involves the concept of tobacco leaf aging. Tobacco leaf aging is an important production link in the cigarette process. Under the condition of meeting the process requirements, the aging process takes several months to several years.

[0003] During the aging process of tobacco leaves, they are not only susceptible to insect pests, but also prone to mold growth and other problems. Creating a controlled atmosphere atmosphere through controlled atmosphere technology can effectively solve the above problems and improve the aging quality of tobacco leaves.

[0004] When applying controlled atmosphere technology to tobacco leaf storage and aging, a lower film cover needs to be covered at the bottom of the tobacco pile, an upper film cover needs to be covered at the top of the tobacco pile, and the edges of the upper and lower film covers need to be heat sealed to form a sealed storage space. Placing a controlled atmosphere agent in the sealed storage space can create a controlled atmosphere atmosphere.

[0005] Because the size of the tobacco pile is large and the height is high, the size of the upper film cover required for covering the tobacco pile is large, resulting in a large mass of the upper film cover. When covering the upper film cover, the worker needs to climb to the top of the tobacco pile and pull the upper film cover to the top of the tobacco pile for operation, which is dangerous and labor-intensive, and needs to be improved. SUMMARY

[0006] In order to reduce the danger and labor intensity of workers when covering the film cover, the present application provides an automatic laying device for plastic film covers used in storage.

[0007] The automatic laying device for plastic film covers used in storage provided by the present application adopts the following technical solution:

[0008] An automatic laying device for plastic film covers used in storage comprises

[0009] The loading module comprises a clamping mechanism for clamping the film cover;

[0010] The lifting module is used to drive the loading module to lift;

[0011] The moving module is used to drive the loading module to move.

[0012] By adopting the above technical solution, when covering the membrane cover, the bottom of the membrane cover is first clamped by a clamping mechanism, and the edges of the membrane cover are rolled up. Then, a pull rope is connected to the edge of the membrane cover. Next, a lifting mechanism drives the loading module to move upward, thereby moving the membrane cover upward. Then, a moving module drives the loading module to move, so that the membrane cover is moved to the stack of tobacco to be covered. Finally, the edge of the membrane cover is pulled down by the pull rope, and the force applied to the membrane cover by the clamping mechanism is removed.

[0013] Before installing the membrane cover, lay a base membrane on the ground, and then stack tobacco stacks on the base membrane. After the membrane cover is installed, heat seal the edges of the membrane cover to the base membrane.

[0014] This setup eliminates the need for workers to carry membrane covers while climbing smoke stacks, thus avoiding high-altitude work and greatly reducing the risks and labor intensity of membrane cover installation.

[0015] Optionally, the clamping mechanism is provided in two sets. The clamping mechanism includes multiple pneumatic grippers and gripper seats with the same number of pneumatic grippers. Each pneumatic gripper is disposed on a different gripper seat. The loading module also includes a loading seat, a first adjustment mechanism, and a second adjustment mechanism. Each gripper seat is slidably disposed on the loading seat. The first adjustment mechanism is used to drive different clamping mechanisms to move, and the second adjustment mechanism is used to drive the pneumatic grippers in the same group of clamping mechanisms to move. The direction in which the first adjustment mechanism drives the clamping mechanism to move is offset from the direction in which the second adjustment mechanism drives the pneumatic grippers to move.

[0016] By adopting the above technical solution, the first adjusting mechanism drives different clamping mechanisms to move, and the second adjusting mechanism drives the pneumatic grippers in the same group of clamping mechanisms to move. The directions in which the first adjusting mechanism drives the clamping mechanisms to move are offset from the directions in which the second adjusting mechanism drives the pneumatic grippers to move, allowing each pneumatic gripper to move in both directions. This enables the loading module to clamp film covers of different sizes for covering stacked tobacco piles of different sizes. Furthermore, this design reduces the storage space required for the loading module.

[0017] Optionally, the first adjustment mechanism includes a fixed seat disposed on the loading seat, a sliding seat slidably disposed on the loading seat, and an adjustment component for driving the sliding seat to move, wherein one set of the clamping mechanisms is disposed on the fixed seat and the other set of the clamping mechanisms is disposed on the sliding seat.

[0018] By adopting the above technical solution, when one set of clamping mechanisms is driven to move, the sliding seat is driven to move by the adjusting component, and the sliding seat drives the clamping mechanism set on the sliding seat to move. This arrangement allows the two clamping components to move towards or away from each other, which is helpful for clamping and unfolding membrane covers of different sizes.

[0019] Optionally, each clamping mechanism has two pneumatic grippers. The second adjustment mechanism includes an adjustment motor mounted on the loading seat, a bidirectional lead screw rotatably mounted on the loading seat, and two connecting rods. The output shaft of the adjustment motor is connected to one of the bidirectional lead screws. The two threaded sections of the bidirectional lead screw pass through and are threadedly connected to the two gripper seats of one of the clamping mechanisms. The two ends of one connecting rod are respectively connected to one of the gripper seats of different clamping mechanisms, and the two ends of the other connecting rod are respectively connected to the remaining gripper seat of different clamping mechanisms.

[0020] By adopting the above technical solution, when the regulating motor is started, it drives the bidirectional lead screw connected to its own output shaft to rotate. Since the two threaded sections of the bidirectional lead screw pass through and are threadedly connected to the two jaw seats of one of the clamping mechanisms, the two jaw seats can move towards each other or in opposite directions depending on the rotation direction of the bidirectional lead screw. Two connecting rods connect the jaw seats in the two sets of clamping mechanisms, allowing the two jaw seats driven by the bidirectional lead screw to drive the two jaw seats in the other set of clamping mechanisms to move synchronously.

[0021] This configuration allows the gripper seats in the two clamping mechanisms to move towards each other or away from each other in pairs, thus enabling the pneumatic grippers to move towards each other or away from each other in pairs. On the one hand, this helps to clamp membrane covers of different sizes; on the other hand, clamping the four corners of the membrane cover first and then driving the gripper seats to move helps to unfold the membrane cover.

[0022] Optionally, it also includes a heat sealing module, which includes a heat sealing ring mechanism capable of generating heat and a heat sealing lifting mechanism for driving the heat sealing ring mechanism to slide in the vertical direction.

[0023] By adopting the above technical solution, after the membrane cover is placed on the smoke stack, it is lowered by a heat-sealing lifting mechanism via a heat-sealing ring mechanism and pressed against the edge of the membrane cover. The heat-sealing ring mechanism generates heat during the descent and reaches the required heat-sealing temperature when it comes into contact with the membrane cover.

[0024] This setup eliminates the need for staff to manually perform subsequent heat sealing work, further reducing their workload.

[0025] Optionally, the heat sealing ring mechanism includes four corner blocks located at the four corners and a connecting component disposed between two adjacent corner blocks. The connecting component includes an extension block and two fixing blocks. A clearance slope is provided between the upper end face of the fixing block and the end face of the fixing block near the other fixing block. The two ends of the extension block are respectively hinged to different fixing blocks. A limiting block for the fixing blocks to abut against the extension block is provided on the upper part of the extension block.

[0026] The fixing block can be moved until the lower end face of the extension block is flush with the lower end faces of the two fixing blocks, and the fixing block can also be moved to abut against another fixing block; when the fixing block can be moved until the lower end face of the extension block is flush with the lower end faces of the two fixing blocks, the limiting block abuts against the fixing block.

[0027] By employing the above technical solution, when heat-sealing membrane covers of different sizes, the fixing blocks in the same group of fixing components are moved towards or away from each other. When two fixing blocks move away from each other, because the two ends of the extension block are hinged to different fixing blocks respectively, and the fixing blocks are provided with clearance slopes, the extension block can move down until its lower end face is flush with the lower end face of the two fixing blocks. When two fixing blocks move towards each other, the extension block moves up until the two fixing blocks abut.

[0028] This configuration allows for adjustment of the spacing between two adjacent corner blocks, enabling the heat sealing ring mechanism to heat seal membrane covers of different sizes, thus improving the adaptability of the heat sealing ring mechanism.

[0029] Optionally, the number of connecting components between two adjacent corner blocks is two sets. One set of connecting components is provided with a tension spring. The tension spring extends and retracts along the moving direction of the fixed block, and the two ends of the tension spring are respectively connected to different fixed blocks. One of the fixed blocks in the connecting components is connected to an adjacent fixed block in the other set of connecting components.

[0030] By employing the above technical solution, when the two fixed blocks at both ends of the two sets of connecting components are pulled to move in opposite directions, since the two fixed blocks in one connecting component are connected by a tension spring, under the tension of the spring, the two fixed blocks in the other connecting component move in opposite directions, causing the extension block to move until its lower end face is flush with the lower end face of the fixed block. If the two fixed blocks are pulled further, the two fixed blocks in the connecting component with the tension spring will move, causing the extension block to move downwards. This arrangement ensures that the extension block in the other connecting component will only move downwards after the extension block in one set of connecting components has moved into position.

[0031] By setting up two sets of connecting components in this way, the distance adjustment range between two adjacent corner blocks can be expanded, further improving the adaptability of the heat sealing ring mechanism.

[0032] Optionally, the connecting component further includes a connecting block and two guide blocks connected to the connecting block. The fixed block has a guide groove extending along its own moving direction, and the two guide blocks are respectively slidably disposed in the guide grooves of different guide blocks.

[0033] By adopting the above technical solution, the guide block is slidably set in the guide groove, and the connecting block connects the two guide blocks, thereby guiding the movement of the two fixed blocks in a set of connecting components and improving the stability when the two fixed blocks move.

[0034] Optionally, hooks are provided on the side walls of each corner block.

[0035] By adopting the above technical solution, when the membrane cover is clamped by the clamping mechanism, the edge of the membrane cover is simultaneously hooked onto the hook, so that the edge of the membrane cover is connected to the heat sealing ring mechanism. This allows the membrane cover to unfold automatically as the heat sealing ring mechanism moves downwards. The membrane cover continues to unfold until its edge contacts the bottom film, at which point the heat sealing ring mechanism heat seals the edge of the membrane cover to the bottom film. This design eliminates the need for manual unfolding of the membrane cover, further improving the ease of installation and heat sealing.

[0036] Optionally, the heat-sealing lifting mechanism further includes an electric push rod and three corner telescopic rods. The electric push rod is mounted on one of the corner blocks, and the other three corner blocks are respectively connected to different corner telescopic rods. The electric push rod is connected to one of the gripper seats, and the other three gripper seats are respectively connected to different corner telescopic rods.

[0037] By adopting the above technical solution, the corner telescopic rod connects the corresponding gripper seat and the corner block, so that when the gripper seat moves and is adjusted, the corner block can move synchronously, without the need for staff to adjust it. This facilitates the installation and unfolding of membrane covers of different sizes, further improving the ease of use of the device in this application.

[0038] In summary, this application includes at least one of the following beneficial technical effects:

[0039] 1. When installing the membrane cover, the membrane cover is first clamped by the clamping mechanism, then the membrane cover is driven to move upward by the lifting mechanism, and finally the membrane cover is moved to the top of the smoke stack by the moving mechanism. This setting eliminates the need for personnel to climb the smoke stack and lift the membrane cover, greatly reducing the danger and labor intensity of the workers when installing the membrane cover.

[0040] 2. By adjusting each pneumatic gripper through the first and second adjustment mechanisms, the loading module can clamp and load membrane covers of different sizes, thereby improving the adaptability of the device in this application.

[0041] 3. By moving and cooperating between the fixed block and the extension block, the length of the connecting component can be adjusted, thereby adjusting the spacing between adjacent corner blocks, so that the heat sealing ring mechanism can heat seal film covers of different sizes.

[0042] 4. Adding hooks to the corner blocks allows the edge of the membrane cover to move when the heat sealing ring mechanism moves. That is, when the heat sealing ring mechanism moves down, the membrane cover can be opened, further improving the ease of membrane cover installation. Attached Figure Description

[0043] Figure 1This is a structural schematic diagram of an embodiment of this application.

[0044] Figure 2 This is a structural schematic diagram highlighting the loading module and the heat-sealing lifting mechanism in the embodiments of this application.

[0045] Figure 3 This is a schematic diagram highlighting the heat-sealing module in the embodiments of this application.

[0046] Figure 4 This is a schematic diagram highlighting the connecting components in the embodiments of this application.

[0047] Explanation of reference numerals in the attached figures:

[0048] 1. Loading module; 11. Loading seat; 12. Clamping mechanism; 121. Gripper seat; 122. Pneumatic gripper; 13. First adjustment mechanism; 131. Fixed seat; 132. Sliding seat; 133. Adjustment component; 1331. Adjustment cylinder; 14. Second adjustment mechanism; 141. Adjustment motor; 142. Two-way lead screw; 143. Connecting rod; 2. Moving module; 3. Lifting module; 31. Lifting hydraulic cylinder; 32. Lifting base; 4. Translation module; 41. 42. Elevating frame; 43. Translation guide rail; 5. Translation cylinder; 6. Heat sealing module; 7. Heat sealing ring mechanism; 8. Corner block; 9. Hook; 10. Connecting component; 11. Extension block; 12. Fixing block; 13. Connecting block; 14. Guide block; 15. Guide groove; 16. Yielding slope; 17. Limiting block; 18. Tension spring; 19. Heat sealing lifting mechanism; 20. Electric push rod; 21. Corner telescopic rod. Detailed Implementation

[0049] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0050] This application discloses an automatic device for laying plastic film covers for storage. (Refer to...) Figure 1 The automatic laying device for plastic film covers for storage includes a loading module 1 for loading the film cover, a moving module 2 for driving the loading module 1 to move, a lifting module 3 for driving the loading module 1 to rise and fall, a translation module 4 for driving the loading module 1 to move horizontally, and a heat sealing module 5 for heat sealing the film cover and the base film.

[0051] Reference Figure 1 The moving module 2 is a trolley, and the loading module 1, lifting module 3 and translation module 4 are all mounted on the moving module 2. The device of this application can be moved within the warehouse by moving the moving module 2.

[0052] Reference Figure 1The lifting module 3 includes a lifting hydraulic cylinder 31 and a lifting base 32. The cylinder body of the lifting hydraulic cylinder 31 is fixed on the moving module 2. The piston rod of the lifting hydraulic cylinder 31 extends and retracts in the vertical direction. The lifting base 32 is fixed to the end of the piston rod of the lifting hydraulic cylinder 31.

[0053] Reference Figure 1 The translation module 4 includes a lifting frame 41 fixed on the lifting base 32, two translation guide rails 42 extending in the horizontal direction, and a translation cylinder 43 whose cylinder body is fixed on the lifting frame 41. The two translation guide rails 42 are respectively fixed on the two opposite end faces of the lifting frame 41, and the piston rod of the translation cylinder 43 extends and retracts along the extension direction of the translation guide rails 42.

[0054] Reference Figure 2 The loading module 1 includes a loading seat 11, two sets of clamping mechanisms 12, a first adjustment mechanism 13, and a second adjustment mechanism 14. The loading seat 11 is U-shaped and is slidably mounted on the two translation guide rails 42 along the sliding direction of the translation guide rails 42. The end of the piston rod of the translation cylinder 43 is fixedly connected to the loading seat 11.

[0055] Reference Figure 2 The clamping mechanism 12 is used to clamp the membrane cover. The clamping mechanism 12 includes two gripper seats 121 and two pneumatic grippers 122 respectively fixed to the lower side of different gripper seats 121. The first adjusting mechanism 13 is used to drive the different clamping mechanisms 12 to move, and the second adjusting mechanism 14 is used to drive the gripper seats 121 in the same group of clamping mechanisms 12 to move. The direction in which the first clamping mechanism 12 drives the clamping mechanism 12 to move is perpendicular to the direction in which the second adjusting mechanism 14 drives the gripper seats 121 to move.

[0056] Reference Figure 2 The first adjustment mechanism 13 includes a fixed seat 131 fixed to the bottom wall of the loading seat 11, a sliding seat 132 slidably disposed on the loading seat 11 along the sliding direction of the loading seat 11, and an adjustment assembly 133 for driving the sliding seat 132 to move. The adjustment assembly 133 includes two adjustment cylinders 1331, the extension direction of the piston rod of the adjustment cylinder 1331 being consistent with the extension direction of the sliding seat 132. The cylinder seat of one adjustment cylinder 1331 is fixed to the fixed seat 131, and the piston rod of the other adjustment cylinder 1331 is fixedly connected to the sliding seat 132. The piston rod of the adjustment cylinder 1331 whose own cylinder seat is connected to the fixed seat 131 is fixedly connected to the cylinder seat of the adjustment cylinder 1331 whose own piston rod is connected to the sliding seat 132.

[0057] Reference Figure 2One set of clamping mechanisms 12 is mounted on the fixed base 131, and the other set of clamping mechanisms 12 is mounted on the sliding base 132. The gripper seats 121 of the clamping mechanisms 12 mounted on the fixed base 131 are slidably mounted on the fixed base 131, and the gripper seats 121 of the clamping mechanisms 12 mounted on the sliding base 132 are slidably mounted on the sliding base 132. The sliding direction of each gripper seat 121 is perpendicular to the sliding direction of the sliding base 132.

[0058] Reference Figure 2 By adjusting the extension and retraction of the piston rod of the cylinder 1331, the sliding seat 132 is driven to move, thereby adjusting the distance between the sliding seat 132 and the fixed seat 131, and thus adjusting the distance between the pneumatic gripper 122 located on the fixed seat 131 and the pneumatic gripper 122 located on the sliding seat 132.

[0059] Reference Figure 2 The second adjusting mechanism 14 includes an adjusting motor 141 fixed on the loading seat 11, a bidirectional lead screw 142 rotatably mounted on the fixed seat 131, and two connecting rods 143. The output shaft of the adjusting motor 141 is fixedly connected to one end of the bidirectional lead screw 142. The axial direction of the bidirectional lead screw 142 is perpendicular to the sliding direction of the sliding seat 132. The two threaded sections of the bidirectional lead screw 142 pass through and are threadedly connected to the two gripper seats 121 of the clamping mechanism 12 mounted on the fixed seat 131. The connecting rods 143 are telescopic rods, extending and retracting along the sliding direction of the sliding seat 132. The two ends of one connecting rod 143 are respectively fixed to one of the gripper seats 121 of the different clamping mechanisms 12, and the two ends of the other connecting rod 143 are respectively fixed to the other gripper seat 121 of the different clamping mechanisms 12.

[0060] Reference Figure 2 By adjusting the motor 141, the bidirectional lead screw 142 rotates. Since the two gripper seats 121 of the clamping mechanism 12 mounted on the fixed base 131 are respectively connected to different threaded sections of the bidirectional lead screw 142, the two gripper seats 121 move towards or away from each other along the axial direction of the bidirectional lead screw 142. That is, the pneumatic grippers 122 fixed on the two gripper seats 121 move towards or away from each other. The corresponding gripper seats 121 in the two sets of clamping assemblies are connected by the connecting rod 143, so that the gripper seats 121 mounted on the sliding base 132 and the gripper seats 121 mounted on the fixed base 131 move together, thereby realizing that the two pneumatic grippers 122 move towards or away from the other two pneumatic grippers 122.

[0061] Reference Figure 3 The heat sealing module 5 includes a heat sealing ring mechanism 51 capable of generating heat and a heat sealing lifting mechanism 52 for driving the heat sealing ring mechanism 51 to slide in the vertical direction.

[0062] Reference Figure 2 ,Figure 3 The heat sealing ring mechanism 51 is located below the loading module 1. The heat sealing ring mechanism 51 includes four corner blocks 511 and connecting components 512 disposed between two adjacent corner blocks 511. The number of connecting components 512 disposed between two adjacent corner blocks 511 is two sets, that is, a total of eight sets of connecting components 512.

[0063] Reference Figure 2 , Figure 3 The corner blocks 511 are located at the four corners below the loading module 1, and each corner block 511 is correspondingly set with a different gripper seat 121. Hooks 5111 are fixed on both sides of the corner blocks 511 away from the inner ring of the heat sealing ring mechanism 51. The hooks 5111 are used for hooking the edge of the membrane cover.

[0064] Reference Figure 2 , Figure 3 The heat-sealing lifting mechanism 52 includes an electric push rod 521 and three corner telescopic rods 522. The electric push rod 521 is mounted on one of the corner blocks 511, and the other three corner blocks 511 are connected to the corner telescopic rods 522. The electric push rod 521 is connected to one of the gripper seats 121, and the other three gripper seats 121 are connected to the different corner telescopic rods 522. Both the electric push rod 521 and the corner telescopic rods 522 extend and retract in a vertical direction. The two ends of the electric push rod 521 are fixedly connected to the corresponding corner block 511 and gripper seat 121, respectively, and the two ends of the corner telescopic rods 522 are fixedly connected to the corresponding corner block 511 and gripper seat 121, respectively.

[0065] Reference Figure 2 , Figure 3 When the gripper seat 121 moves, the corner blocks 511 can move together via the electric push rod 521 and the corner telescopic rod 522. When the electric push rod 521 extends or retracts, the telescopic rod can move together, thereby causing the corner blocks 511 to rise or fall.

[0066] Reference Figure 3 , Figure 4 Two connecting components 512 are arranged between two adjacent corner blocks 511 along the direction from one corner block 511 to the other. The connecting component 512 includes an extension block 5121, two fixing blocks 5122, a connecting block 5123, and two guide blocks 5124 respectively fixed at both ends of the connecting block 5123. Heating wires (not shown in the figure) are passed through and fixedly connected to the corner block 511, the fixing block 5122, and the extension block 5121. The corner block 511, the fixing components, and the extension block 5121 are all made of metal materials with high thermal conductivity.

[0067] Reference Figure 3 , Figure 4The fixing blocks 5122 are arranged along the arrangement direction of the connecting components 512. One fixing block 5122 is connected to the corner block 511 of the adjacent component, and the other fixing block 5122 is fixedly connected to the adjacent fixing block 5122 in another set of adjacent connecting components 512.

[0068] Reference Figure 4 The cross-section of the guide slider 5124 is convex. The side wall of the fixed block 5122 is provided with a guide groove 5125. The two guide sliders 5124 connected to a connecting block 5123 are slidably arranged in the guide grooves 5125 of different fixed blocks 5122. The guide grooves 5125 extend along the arrangement direction of the fixed blocks 5122.

[0069] Reference Figure 4 A clearance ramp 5126 is provided between the upper end face of the fixing block 5122 and the end face of the fixing block 5122 near another fixing block 5122. The two ends of the extension block 5121 are hinged to different fixing blocks 5122 respectively. Limiting blocks 5127 are fixed on both opposite sidewalls of the extension block 5121, each limiting block 5127 abutting against the upper end face of a different fixing block 5122. The fixing block 5122 can move until the lower end face of the extension block 5121 is flush with the lower end faces of the two fixing blocks 5122. At this time, the limiting blocks 5127 abut against the fixing block 5122, and the fixing block 5122 abuts against the extension block 5121. The fixing block 5122 can also move until it abuts against another fixing block 5122, at which point the extension block 5121 is located above the two fixing blocks 5122.

[0070] Reference Figure 3 , Figure 4 A tension spring 5128 is provided on one of the connecting components 512 between two adjacent corner blocks 511. The tension spring 5128 extends and retracts along the sliding direction of the fixed block 5122. The two ends of the tension spring 5128 are respectively fixed on different fixed blocks 5122, and the tension spring 5128 is always in a stretched state.

[0071] Reference Figure 3 , Figure 4 When two adjacent corner blocks 511 move in opposite directions, the fixed block 5122 in one set of connecting components 512 remains relatively stationary due to the tension of the spring 5128, while the fixed block 5122 in the other set of connecting components 512 moves in opposite directions. Simultaneously, the extension block 5121 moves downwards until the limiting block 5127 contacts the fixed block 5122. At this point, the lower end face of the extension block 5121 is flush with the lower surface of the fixed block 5122, and the fixed block 5122 contacts the side wall of the extension block 5121. As the two corner blocks 511 continue to move in opposite directions, the two fixed blocks 5122, under the tension of the spring 5128, move in opposite directions, causing the other extension block 5121 to move downwards.

[0072] The implementation principle of the automatic laying device for plastic film covers for storage in this application embodiment is as follows: The laying of the film cover consists of the following steps:

[0073] Step 1: First, lay the base film on the bottom surface, then stack the tobacco stacks on the base film, and then move it through the moving module 2 so that the device of this application is moved to the side of the tobacco stack to be covered with the film cover;

[0074] Step 2: First, clamp the four corners of the bottom surface of the membrane cover with four pneumatic grippers 122, then wrap the edge of the membrane cover around the heat sealing ring mechanism 51 from below to the outside of the heat sealing ring mechanism 51, and hook the edge of the membrane cover with hooks 5111.

[0075] Step 3: Drive the loading module 1 and the membrane cover upward by lifting module 3, and then drive the loading module 1 and the membrane cover to move above the stack of tobacco to be covered by the membrane cover by translation module 4.

[0076] Step 4: The bottom surface of the membrane cover is unfolded above the smoke stack by the first adjustment mechanism 13 and the second adjustment mechanism 14, and the corner block 511 moves synchronously, so that the connecting component 512 unfolds.

[0077] Step 5: The corner block 511, the fixing block 5122 and the extension block 5121 are heated by the heating wire, and the heat sealing ring mechanism 51 is driven to descend by the heat sealing lifting mechanism 52. At this point, the membrane cover unfolds in the vertical direction until the edge of the membrane cover abuts against the bottom membrane. The heat sealing ring mechanism 51 presses against the membrane cover and heat seals the bottom membrane and the membrane cover.

[0078] This design eliminates the need for workers to carry membrane covers while climbing smoke stacks, significantly reducing the risks and workload associated with installing the membrane covers. Furthermore, the heat sealing process can be completed simultaneously with the membrane cover installation, further reducing the workload for workers.

[0079] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An automatic laying device for plastic film covers used in warehousing, characterized in that: include The loading module (1) includes a clamping mechanism (12) for clamping the membrane cover; Lifting module (3) is used to drive the loading module (1) to lift. The moving module (2) is used to drive the loading module (1) to move; It also includes a heat sealing module (5), which includes a heat sealing ring mechanism (51) capable of generating heat and a heat sealing lifting mechanism (52) for driving the heat sealing ring mechanism (51) to slide in the vertical direction; The heat sealing ring mechanism (51) includes four corner blocks (511) located at the four corners and a connecting component (512) disposed between two adjacent corner blocks (511). The connecting component (512) includes an extension block (5121) and two fixing blocks (5122). A clearance slope (5126) is provided between the upper end face of the fixing block (5122) and the end face of the fixing block (5122) near the other fixing block (5122). The two ends of the extension block (5121) are respectively hinged to different fixing blocks (5122). A limiting block (5127) is provided on the extension block (5121) for the fixing blocks (5122) to abut against. The fixing block (5122) can be moved until the lower end face of the extension block (5121) is flush with the lower end faces of the two fixing blocks (5122), and the fixing block (5122) can also be moved to abut against another fixing block (5122); when the fixing block (5122) can be moved until the lower end face of the extension block (5121) is flush with the lower end faces of the two fixing blocks (5122), the limiting block (5127) abuts against the fixing block (5122); Heating wires are all connected through and fixedly connected to the corner block (511), the fixing block (5122), and the extension block (5121).

2. The automatic laying device for plastic film covers for storage according to claim 1, characterized in that: The clamping mechanism (12) is provided in two sets. The clamping mechanism (12) includes multiple pneumatic grippers (122) and gripper seats (121) with the same number of pneumatic grippers (122). Each pneumatic gripper (122) is disposed on a different gripper seat (121). The loading module (1) also includes a loading seat, a first adjustment mechanism (13) and a second adjustment mechanism (14). Each gripper seat (121) is slidably disposed on the loading seat. The first adjustment mechanism (13) is used to drive different clamping mechanisms (12) to move. The second adjustment mechanism (14) is used to drive the pneumatic grippers (122) in the same group of clamping mechanisms (12) to move. The direction in which the first adjustment mechanism (13) drives the clamping mechanism (12) to move is offset from the direction in which the second adjustment mechanism (14) drives the pneumatic grippers (122) to move.

3. The automatic laying device for plastic film covers for storage according to claim 2, characterized in that: The first adjustment mechanism (13) includes a fixed seat (131) disposed on the loading seat (11), a sliding seat (132) slidably disposed on the loading seat (11), and an adjustment assembly (133) for driving the sliding seat (132) to move. One set of the clamping mechanisms (12) is disposed on the fixed seat (131), and the other set of the clamping mechanisms (12) is disposed on the sliding seat (132).

4. The automatic laying device for plastic film covers for storage according to claim 2, characterized in that: Each clamping mechanism (12) has two pneumatic grippers (122). The second adjustment mechanism (14) includes an adjustment motor (141) mounted on the loading seat (11), a bidirectional lead screw (142) rotatably mounted on the loading seat (11), and two connecting rods (143). The output shaft of the adjustment motor (141) is connected to one of the bidirectional lead screws (142). The two threaded sections of the bidirectional lead screw (142) are respectively threaded through and connected to the two gripper seats (121) of one of the clamping mechanisms (12). The two ends of one connecting rod (143) are respectively connected to one of the gripper seats (121) of different clamping mechanisms (12), and the two ends of the other connecting rod (143) are respectively connected to the other gripper seat (121) of different clamping mechanisms (12).

5. The automatic laying device for plastic film covers for storage according to claim 1, characterized in that: The number of connecting components (512) between two adjacent corner blocks (511) is two sets. One set of connecting components (512) is provided with a tension spring (5128). The tension spring (5128) extends and retracts along the moving direction of the fixed block (5122), and the two ends of the tension spring (5128) are respectively connected to different fixed blocks (5122). One of the fixed blocks (5122) in the connecting component (512) is connected to the adjacent fixed block (5122) in the other set of connecting components (512).

6. The automatic laying device for plastic film covers for storage according to claim 1, characterized in that: The connecting component (512) further includes a connecting block (5123) and two guide blocks (5124) connected to the connecting block (5123). The fixing block (5122) has a guide groove (5125) extending along its own moving direction. The two guide blocks (5124) are respectively slidably arranged in the guide groove (5125) of the different guide blocks (5124).

7. The automatic laying device for plastic film covers for storage according to claim 1, characterized in that: Each corner block (511) is provided with a hook (5111) on its side wall.

8. The automatic laying device for plastic film covers for storage according to claim 1, characterized in that: The heat-sealing lifting mechanism (52) also includes an electric push rod (521) and three corner telescopic rods (522). The electric push rod (521) is mounted on one of the corner blocks (511), and the other three corner blocks (511) are connected to different corner telescopic rods (522) respectively. The electric push rod (521) is connected to one of the gripper seats (121), and the other three gripper seats (121) are connected to different corner telescopic rods (522) respectively.

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