An automatic coiling production line for preparing a plastic netting product

Abstract

The application provides an automatic coiling production line for preparing a plastic separation net product, and relates to a coiling production line, which comprises two groups of large rotating discs driven to rotate by a rotating motor and arranged in parallel, four groups of large coiling rollers are uniformly arranged along the ring direction between the two groups of large rotating discs, when the large rotating discs rotate by 90 DEG, the synchronous operation of the four groups of large coiling rollers is as follows: the large coiling roller A is used for receiving and coiling the separation net of the clamping roller, the large coiling roller B is used for cooperating with a group of paper core barrels to perform a first unwinding operation, the large coiling roller C is used for cooperating with a plurality of groups of paper core barrels to perform a coiling operation in sequence until the large coiling roller C completes the unwinding, and the large coiling roller D is located at an idle position.

Description

Technical Field

[0001] This invention relates to a roll forming production line, and more particularly to an automated roll forming production line for the preparation of plastic mesh products. Background Technology

[0002] Plastic inlet screens are an important component of water treatment membrane elements. They not only serve as inlet channels but also play a crucial role in water flux and desalination rate. The production process of PE water treatment screens in existing technologies is illustrated in the patented device for a PE water treatment membrane production line (publication number CN218688194U). This patent discloses a PE water treatment screen production line and method, with production completed by winding. However, each roll change requires manual intervention, making it time-consuming and labor-intensive. Even with existing equipment that can automatically change rolls at the end, the finished product needs to be wound outside the paper core tube, and the amount wound in each paper core tube is small, resulting in frequent roll changes. Since this winding equipment needs to be directly connected to the production equipment, any roll change abnormalities may require shutdown for maintenance, thus reducing production stability.

[0003] Currently, the commonly used automatic roll changing method typically involves a set of pressure rollers on one side of the take-up roller. After the mesh is cut, the first section of the mesh is wound onto the take-up roller by the contact and rotation of the pressure roller and the take-up roller. In this structure, the first section of the mesh formed between the end of the mesh and the take-up roller is suspended in the air after the mesh is cut. The surface of the take-up roller only contacts the set of pressure rollers. The operation of pressing and winding the mesh onto the take-up roller by the squeezing force between the surface of the take-up roller and the pressure roller is unstable. If the mesh slips off, there is a risk of machine downtime for maintenance during the production process. Summary of the Invention

[0004] To address the aforementioned technical problems, the present invention aims to provide an automated roll-forming production line for the preparation of plastic mesh products. By adding a transition winding group at the tail end of the production equipment, a large roll winding method can be used for transition, thereby reducing the frequency of roll changes at the tail end of production. This reduces the risk of production stoppage due to abnormal roll changes, thereby improving the overall stability of the production process.

[0005] This invention provides the following technical solution:

[0006] An automated roll-forming production line for preparing plastic mesh products includes a transition winding group located at the tail end of the plastic mesh preparation production equipment. The transition winding group is connected to the rear end of two sets of clamping rollers and located at the front end of the upper roll changing section and the lower roll changing section. It includes two sets of large turntables that are driven to rotate by a rotary motor and are arranged in parallel. Four sets of large rolls are evenly arranged in a circumferential direction between the two sets of large turntables. The four sets of large rolls are driven to rotate by a winding motor installed on the large turntables. When rotating in the forward direction, it is for winding operation, and when rotating in the reverse direction, it is for unwinding operation.

[0007] The four sets of large winding rollers are designated as Large Roller A, Large Roller B, Large Roller C, and Large Roller D. Each set of large winding rollers rotates one revolution with the large turntable, enabling cyclical winding, unwinding, and rewinding operations without the need for manual transfer and unwinding, saving time and labor. Furthermore, in the evenly distributed arrangement of the four sets of large winding rollers along the rotation, Large Roller A, Large Roller B, Large Roller C, and Large Roller D are distributed clockwise. Initially, as... Figure 1 As shown, manual pulling is used to position the first section of the plastic spacer after it has passed through the clamping rollers, which then winds around the large roll A for positioning. Afterwards, the automatic winding, unwinding, and rewinding operations can be achieved without further manual intervention. After one full rotation, when the large turntable rotates another 90°, the synchronous operation of the four large rolls is as follows: Large roll A is in the winding position, used to receive the spacer from the clamping rollers for winding; large roll B is in the first unwinding position, used to cooperate with a set of paper core tubes for one unwinding operation (i.e.,...). Large roll B pauses after completing a small roll of paper core tubes with a set of paper core tubes. Large roll C is in the fully unwound position, and it is used to sequentially cooperate with multiple sets of paper core tubes to perform roll-up operations until the large roll C completes unwinding (that is, the large roll C performs continuous unwinding operations until unwinding is completed). Large roll D is in the idle position, where it is in a static state. The upper roll changing section is used to feed paper core tubes onto the large roll in the fully unwound position, while the lower roll changing section is used to receive the paper core tubes that have been wound up in the fully unwound position.

[0008] Preferably, four sets of fixed shafts are evenly installed and fixed between the two sets of large turntables along the circumferential direction, and the fixed shafts are provided with matching grooves along the axial direction;

[0009] Above the two sets of clamping rollers is a drive frame 1, on which a pressure take-up roller 1 and a telescopic cutter 1 are mounted. The drive frame 1 is driven by a drive cylinder 1 to perform linear reciprocating motion.

[0010] A set of drive frame two is set above drive frame one. A pressure take-up roller two is mounted on drive frame two. Drive frame two is driven by drive cylinder two to make linear reciprocating motion.

[0011] Four sets of winding platforms are evenly distributed and fixed around the perimeter of the large turntable. The four sets of winding platforms correspond to four sets of large rolls, and are respectively located at the winding position, the first unwinding position, the fully unwinding position, and the idle position. The winding platforms of the two sets of large turntables are set opposite to each other. Each set of winding platforms is connected to a small turntable driven by a rotary motor. The small turntables between the two sets of winding platforms are also set opposite to each other. A small roll and a spare roll are set between the two sets of opposite small turntables. The small roll and the spare roll are driven to rotate by winding motor two and winding motor three, respectively, which are installed on the small turntables.

[0012] After the large turntable rotates 90°, the large roll that was originally in the take-up position rotates to the first unwind position, while the large roll that was originally in the idle position rotates to the take-up position. At this time, the spacer between the large roll and the clamping roll in the first take-up position passes around the small roll, as... Figure 2 As shown, the first clamping take-up roller is driven by the first drive frame to press against the large take-up roller at the take-up position, and the second clamping take-up roller is driven by the second drive frame to press against the small take-up roller. The telescopic cutter is extended and used to cut the partition between the take-up position and the primary take-up position. Figure 3 As shown, the cut ends of the partition mesh are rewound by the corresponding large and small rollers on both sides. Specifically, the large roller at the winding position, under the pressure of the first pressing roller, presses the partition mesh tightly against its surface. As the large roller rotates, the first pressing roller rotates along with it, creating tension on the partition mesh. The partition mesh pressed against the surface of the large roller is naturally wrapped inside the subsequent partition mesh as the large roller rotates. The first cut section of the partition mesh is also ultimately wrapped inside the partition mesh on the large roller. After the partition mesh wraps around the large roller multiple times, a natural tension is formed, at which point the first pressing roller can return to its original position away from the large roller. Similarly, after the second pressing roller, in conjunction with the small roller, completes the winding of the first cut section of the partition mesh, it can return to its original position away from the small roller under the drive of the second drive frame. At this point, it is as follows... Figure 4 As shown, when the large roll at the unwinding position completes one unwinding cycle, its corresponding small roll pauses after completing one winding cycle, while the large roll at the winding position continues to wind up the large roll. Once the large roll is wound up, the turntable can rotate another 90°.

[0013] Preferably, two sets of large turntables are mounted on corresponding side frames. Two sets of drive cylinders (one and two) are respectively provided and mounted on the side frames, with their drive ends connected to drive frame one and drive frame two respectively. This ensures the stability of the reciprocating motion of drive frame one and drive frame two. The telescopic cutter includes a telescopic cylinder mounted on drive frame one and a cutting blade driven by the telescopic cylinder. The cutting blade extends from drive frame one driven by the telescopic cylinder and, in conjunction with the cutting groove on the fixed shaft, cuts the mesh. Figure 3 As shown.

[0014] Preferably, the upper part of the roll changing section is mounted on the side frame and is driven by the roll changing cylinder to the fully unwinding position for feeding the paper core tube onto the small roll or spare roll;

[0015] The lower roll section is mounted on the side frame and is driven by the second roll changer cylinder to rise to the fully unwinding position to unload the paper core tube from the small roll or spare roll.

[0016] Preferably, a pressing take-up roller three is also installed between the opposite take-up tables. The two ends of the pressing take-up roller three are connected to the drive frame three. The drive frame three is driven by the drive cylinder three to make linear reciprocating motion. A telescopic cutter two is installed above the small turntable. After the telescopic cutter one is driven to extend, it is used to cut the partition between the small roll and the spare roll. When it is necessary to cut the partition between the small roll and the spare roll, the pressing take-up roller three is used to press against the small roll or spare roll at the end of the rotation close to the large turntable, so as to press the partition tightly against the surface of the small roll or spare roll. As the small roll or spare roll is wound and rotated, the first section of the cut partition is wound on the small roll or spare roll, so as to form a winding pull force on the partition on the large roll.

[0017] Preferably, the upper roll changing section includes an inner upper roll section and an outer upper roll section. The inner upper roll section is located above the small roll or spare roll near the large turntable and is used to feed the paper core tube onto the small roll or spare roll near the large turntable. The outer upper roll section is located above the small roll or spare roll away from the large turntable and is used to feed the paper core tube onto the small roll or spare roll away from the large turntable. The lower roll changing section is located below the small roll or spare roll away from the large turntable and is used to receive the unloading of the winding separator from the small roll or spare roll away from the large turntable.

[0018] Preferably, the roll-changing upper section includes two sets of parallel limiting side plates and two sets of parallel end plates, with the two sets of end plates encapsulated at both ends of the two sets of limiting side plates, forming a cavity for the stacking of paper core tubes. The bottom opening of the cavity is used to connect with the small roll or spare roll near the large turntable for feeding paper core tubes. The inner wall of the cavity is also provided with two sets of support strips. The first set of support strips is located at the bottom of the cavity and is used to support the bottom layer of paper core tubes. The second set of support strips is located above the first set of support strips and is used to support the paper core tubes above the bottom layer of paper core tubes. Each set of support strips includes at least four sets of rotary motors mounted on the limiting side plates in a rectangular distribution and support strips driven by the rotary motors to rotate. The support strips are used to support the paper core tubes.

[0019] Preferably, the small roll or spare roll includes an outer body block that is driven and connected to the second or third winding motor. A set of mounting blocks is linearly guided inside the body block. One side of the mounting block is driven by the first ejector cylinder, and a tensioning shaft is installed on the other side. The tensioning shaft is driven by the first ejector cylinder to extend out of the outer body block and is used to extend into the paper core tube from both ends to position the paper core tube. A set of conical blocks driven by the second ejector cylinder is also installed inside the tensioning shaft. Multiple sets of tensioning soft blocks are circumferentially connected to the conical surface of the conical blocks. The tensioning soft blocks are guided and connected to the tensioning shaft and are driven by the conical blocks to extend out of the tensioning shaft surface to achieve tensioning and fixing of the inner wall of the paper core tube.

[0020] This allows the paper core tube to be replaced when the upper roll section descends between two sets of opposing outer body blocks. The tensioning shaft inside the outer body block extends and is placed inside the paper core tube, while the tensioning soft block extends and assists in positioning on the inner wall of the paper core tube. Then, the bottom rotating motor is started, causing the support bar to swing to the inner wall of the limiting side plate. At this time, the paper core tube is fixed only by the tensioning shaft. The upper roll section rises, and the bottom paper core tube can be separated from the cavity, realizing the feeding of the paper core tube. The structure is relatively simple, and the feeding is also relatively convenient.

[0021] Preferably, in order to reduce the number of drive structures used to drive the telescopic cutter II, the telescopic cutter II can be installed on the outer side wall of the inner upper cylinder limiting side plate, and a set of lead screws is also installed on the outer side wall. A set of nut blocks are threaded onto the lead screws, and the nut blocks are slidably connected to the limiting side plate. They are used to drive the telescopic cutter II installed thereon to make fine adjustments to its lifting position.

[0022] The beneficial effects of this invention are:

[0023] 1. The purpose of this invention is to provide an automated roll forming production line for the preparation of plastic mesh products. By adding a transition winding group at the tail end of the production equipment, the transition can be carried out by winding large rolls first, thereby reducing the frequency of roll changing at the tail end of the production line. This reduces the risk of production stoppage due to abnormal roll changing operations, thereby improving the overall stability of the preparation and production. That is, when the number of roll changing times of the tail end structure directly connected to the plastic mesh preparation and production equipment is reduced, the probability of abnormalities during roll changing can be greatly reduced, thereby reducing the number of downtime maintenance and eliminating the risk of production stoppage during downtime maintenance.

[0024] 2. The present invention can also directly unwind based on the transition winding group to complete the operation of rewinding into smaller rolls. At the same time, the winding and unwinding operations of the transition winding group can be carried out simultaneously, thereby improving production stability and ensuring production efficiency.

[0025] 3. The auxiliary roll changing upper section of this invention can realize the automatic feeding of the paper core tube when changing to a smaller roll, and the auxiliary roll changing lower section can realize the automatic unloading of the finished roll when changing to a smaller roll, thereby improving the overall integrated automatic rolling level of production.

[0026] 4. In the transition winding group of the present invention, the large winding roller rotates once with the large turntable, and can cycle through winding, unwinding and rewinding operations without the need for manual transfer and unwinding, which saves time and effort. Attached Figure Description

[0027] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0028] Figure 1 This is a schematic diagram of the structural distribution of the starting positions of a set of components on a large turntable in this invention;

[0029] Figure 2 This is a schematic diagram of the structural distribution of the large roll, which was originally in the take-up position, after rotating 90° with the large turntable;

[0030] Figure 3 Based on Figure 2 A schematic diagram of the structural distribution of the telescopic cutter before cutting the partition net;

[0031] Figure 4 yes Figure 3 A schematic diagram of the structure of the telescopic cutter rewinding the wire mesh at the winding position after cutting it, and unwinding it once at the first unwinding position;

[0032] Figure 5 Based on Figure 4 A schematic diagram of the structure of the large turntable rotating 90° again at the take-up position, the first unwind position, and the fully unwind position;

[0033] Figure 6 This is a schematic diagram of the paper core cylinder with the spare roll in the fully unwound position.

[0034] Figure 7 Based on Figure 6 A schematic diagram of the structure after the small turntable rotates 180° clockwise after feeding;

[0035] Figure 8 Based on Figure 7 A schematic diagram of the structure after the small turntable is rotated 180° clockwise again;

[0036] Figure 9 Based on Figure 8 A schematic diagram of the structure after the telescopic cutter completes the cutting of the mesh, the spare roller completes one winding, and the small roller completes one unloading;

[0037] Figure 10 This is a schematic diagram of a structure in which the large roll in the fully unwound position, after completing the unwinding, presses the take-up roll against the outside of the partition net to assist in the take-up of the tail section of the partition net.

[0038] Figure 11 Based on Figure 10 A schematic diagram of the structure where the small turntable rotates 180° clockwise, the spare roller waits for the partition wire to be fed, and the small winding roller waits for the paper core to be fed;

[0039] Figure 12 Based on Figure 11 A schematic diagram of the structure after the paper core tube is fed onto the spare roller and the paper core tube is fed onto the small roller, with the small turntable rotating 180° clockwise again so that the paper core tube is located at the outer end.

[0040] Figure 13 This is a schematic diagram of the structure of the upper drum section for changing rolls;

[0041] Figure 14 This is a schematic diagram of the structure for feeding material into the small winding roller and the upper drum section of the winding machine;

[0042] The markings in the diagram are as follows: 1 is the clamping roller, 2 is the upper roll changing section, 3 is the lower roll changing section, 4 is the large turntable, 5 is the large roll, 6 is the take-up position, 7 is the first unwind position, 8 is the fully unwind position, 9 is the idle position, 10 is the first pressure take-up roller, 11 is the first telescopic cutter, 12 is the second pressure take-up roller, 13 is the take-up table, 14 is the small turntable, 15 is the small roll, 16 is the spare roller, 17 is the side frame, and 18 is the paper core tube. 9 is the third pressing take-up roller, 20 is the second telescopic cutter, 21 is the inner upper cylinder, 22 is the outer upper cylinder, 23 is the limiting side plate, 24 is the end plate, 25 is the first set of support strips, 26 is the second set of support strips, 27 is the outer body block, 28 is the mounting block, 29 is the first ejector cylinder, 30 is the tensioning shaft, 31 is the second ejector cylinder, 32 is the conical block, 33 is the tensioning soft block, 34 is the fixed shaft, and 35 is the mating groove. Detailed Implementation

[0043] Example 1

[0044] like Figure 1-14 As shown, an automated roll-forming production line for preparing plastic mesh products includes, in this embodiment, a transition winding group located at the tail end of the plastic mesh preparation production equipment. The transition winding group is connected to the rear end of two sets of clamping rollers 1 and located at the front end of the upper roll changing section 2 and the lower roll changing section 3. It includes two sets of large turntables 4 that are driven to rotate by a rotary motor and are arranged in parallel. Four sets of large rolling rollers 5 are evenly arranged in the circumferential direction between the two sets of large turntables 4. The four sets of large rolling rollers 5 are driven to rotate by a winding motor installed on the large turntables 4. When rotating in the forward direction, it is for winding operation, and when rotating in the reverse direction, it is for unwinding operation.

[0045] The four sets of large winding rollers 5 are designated as large winding roller A, large winding roller B, large winding roller C, and large winding roller D. Each set of large winding rollers 5 rotates once with the large turntable 4, enabling cyclical winding, unwinding, and rewinding operations without the need for manual transfer and unwinding, thus saving time and labor. Furthermore, in the evenly distributed arrangement of the four sets of large winding rollers 5, large winding rollers A, B, C, and D are clockwise. Initially, as... Figure 1 As shown, manual pulling operation causes the first section of the plastic spacer after passing through the clamping roller 1 to be positioned by the large winding roller A. Afterwards, the automatic cyclic winding, unwinding, and rewinding operations can be achieved without further manual intervention. After one rotation, when the large turntable 4 rotates another 90°, the synchronous operation of the four sets of large winding rollers 5 is as follows: Large winding roller A is located at the winding position 6, which is used to receive the spacer from the clamping roller 1 for winding; large winding roller B is located at the first unwinding position 7, which is used to cooperate with a set of paper core tubes 18 for one unwinding operation (i.e., large winding roller B is paired with...). After a set of paper core tubes 18 completes a small roll forming operation, the large roll C is in the fully unwinding position 8, which is used to sequentially cooperate with multiple sets of paper core tubes 18 to perform a rolling operation until the large roll C completes the unwinding (that is, the large roll C performs a continuous unwinding operation until the unwinding is completed). The large roll D is in the idle position 9, where it is in a static state. The upper roll changing section 2 is used to feed the paper core tubes 18 onto the large roll 5 in the fully unwinding position 8, while the lower roll changing section 3 is used to receive the paper core tubes 18 that have been wound up in the fully unwinding position 8.

[0046] Four sets of fixed shafts 34 are evenly installed and fixed between the two sets of large turntables 4 along the circumference. The fixed shafts 34 are provided with matching grooves 35 along the axial direction.

[0047] Above the two sets of clamping rollers 1, there is a set of drive frame 1. The drive frame 1 is equipped with a pressing take-up roller 10 and a telescopic cutter 11. The drive frame 1 is driven by the drive cylinder 1 to make linear reciprocating motion.

[0048] A set of drive frame two is set above drive frame one. A pressing take-up roller two 12 is mounted on drive frame two. Drive frame two is driven by drive cylinder two to make linear reciprocating motion.

[0049] Four sets of take-up tables 13 are evenly distributed and fixed around the periphery of the large turntable 4. The four sets of take-up tables 13 correspond to the four sets of large rolls 5 respectively, and are located at the take-up position 6, the first unwind position 7, the fully unwind position 8 and the empty position 9 in sequence. The take-up tables 13 of the two sets of large turntables 4 are set opposite to each other. Each set of take-up tables 13 is connected to a small turntable 14 driven by a rotary motor 2. The small turntables 14 between the two sets of take-up tables 13 are also set opposite to each other. A small roll 15 and a spare roll 16 are set between the two sets of opposite small turntables 14. The small roll 15 and the spare roll 16 are driven to rotate by the take-up motor 2 and the take-up motor 3 installed on the small turntable 14 respectively.

[0050] After the large turntable 4 rotates 90°, the large roll 5, originally in the take-up position 6, rotates to the first unwind position 7, while the large roll 5, originally in the idle position 9, rotates to the take-up position 6. At this time, the spacer between the large roll 5 and the clamping roll 1 in the first take-up position 6 is wound around the small roll 15, as follows. Figure 2 As shown, the first clamping take-up roller 10 is driven by the first drive frame to press against the large take-up roller 5 of the take-up position 6, and the second clamping take-up roller 12 is driven by the second drive frame to press against the small take-up roller 15. The telescopic cutter 11 is driven to extend and is used to cut the partition between the take-up position 6 and the primary take-up position 6, as shown. Figure 3 As shown, the cut ends of the partition net are rewound by the corresponding large roller 5 and small roller 15 on both sides. That is, at this time, the large roller 5 located at the winding position 6 presses the partition net tightly against the surface of the large roller 5 under the pressure of the pressing winding roller 10. As the large roller 5 rotates, the pressing winding roller 10 rotates against the surface of the large roller 5, forming a pulling force on the partition net. The partition net pressed against the surface of the large roller 5 is naturally wrapped inside the subsequent partition net as the large roller 5 rotates. The first cut section of the partition net is also finally wrapped inside the partition net of the large roller 5. After the partition net is wrapped around the large roller 5 many times, a natural pulling force can be formed. At this time, the pressing winding roller 10 can return to its original position away from the large roller 5. Similarly, after the pressing winding roller 2 12 and the small roller 15 complete the winding of the first cut section of the partition net, it can return to its original position away from the small roller 15 under the drive of the drive frame 2. At this time, it is as follows. Figure 4 As shown, the large roll 5 at the unwinding position 7 completes one unwinding cycle, that is, its corresponding small roll 15 pauses after completing one winding cycle, while the large roll 5 at the winding position 6 continues to wind up the large roll. When the winding of this large roll is completed, the large turntable 4 can continue to rotate 90° again.

[0051] Example 2

[0052] An automated roll-forming production line for preparing plastic mesh products, in this embodiment, is a further limitation based on Embodiment 1. Two sets of large turntables 4 are mounted on corresponding two sets of side frames 17. Two sets of drive cylinders 1 and 2 are respectively provided and mounted on the side frames 17, and their drive ends are respectively connected to drive frame 1 and drive frame 2, thereby ensuring the stability of the reciprocating motion of drive frame 1 and drive frame 2. The telescopic cutter 11 includes a telescopic cylinder mounted on drive frame 1 and a cutting blade 1 driven by the telescopic cylinder. The cutting blade 1 extends out of drive frame 1 driven by the telescopic cylinder and cooperates with the cooperating cutting groove 35 on the fixed shaft 34 to cut the mesh. Figure 3 As shown.

[0053] The roll changing upper section 2 is mounted on the side frame 17 and is driven by the roll changing cylinder to descend to the fully unwinding position 8 for feeding the paper core tube 18 onto the small roll 15 or the spare roll 16;

[0054] The roll changing lower section 3 is mounted on the side frame 17 and is driven by the roll changing cylinder 2 to rise to the fully unwinding position 8 to unload the paper core tube 18 onto the small roll 15 or the spare roll 16.

[0055] A pressing take-up roller 3 19 is also installed between the opposite take-up tables 13. The two ends of the pressing take-up roller 3 19 are connected to the drive frame 3. The drive frame 3 is driven by the drive cylinder 3 to make linear reciprocating motion. A telescopic cutter 20 is installed above the small turntable 14. The telescopic cutter 11 is driven to extend and is used to cut the partition between the small roll 15 and the spare roll 16. When it is necessary to cut the partition between the small roll 15 and the spare roll 16, the pressing take-up roller 3 19 is used to press against the small roll 15 or the spare roll 16 at the end of the large turntable 4 to press the partition tightly against the surface of the small roll 15 or the spare roll 16. As the small roll 15 or the spare roll 16 is wound and rotated, the first section of the cut partition is wound on the small roll 15 or the spare roll 16 to form a winding pull force on the partition on the large roll 5.

[0056] The upper roll changing section 2 includes an inner upper roll section 21 and an outer upper roll section 22. The inner upper roll section 21 is located above the small roll 15 or spare roll 16 near the end of the large turntable 4 and is used to feed the paper core tube 18 onto the small roll 15 or spare roll 16 near the end of the large turntable 4. The outer upper roll section 22 is located above the small roll 15 or spare roll 16 away from the end of the large turntable 4 and is used to feed the paper core tube 18 onto the small roll 15 or spare roll 16 away from the end of the large turntable 4. The lower roll changing section 3 is located below the small roll 15 or spare roll 16 away from the end of the large turntable 4 and is used to receive the unloading of the winding separator on the small roll 15 or spare roll 16 away from the large turntable 4.

[0057] The roll changing upper section 2 includes two sets of parallel limiting side plates 23 and two sets of parallel end plates 24. The two sets of end plates 24 are encapsulated at both ends of the two sets of limiting side plates 23, forming a cavity for the stacking of paper core tubes 18. The bottom opening of the cavity is used to connect with the small roll 15 or spare roll 16 near the large turntable 4 for feeding the paper core tubes 18. The inner wall of the cavity is also provided with two sets of support strips. The first set of support strips 25 is located at the bottom of the cavity and is used to support the bottom layer of paper core tubes 18. The second set of support strips 26 is located above the first set of support strips 25 and is used to support the paper core tubes 18 above the bottom layer of paper core tubes 18. Each set of support strips includes at least four sets of rotary motors installed on the limiting side plates 23 in a rectangular distribution and support strips driven by the rotary motors to rotate. The support strips are used to support the paper core tubes 18.

[0058] The small roll 15 or spare roll 16 includes an outer body block 27 driven and connected to the second or third winding motor. A set of mounting blocks 28 are linearly guided inside the body block. One side of the mounting block 28 is driven by the first ejector cylinder 29, and the other side is equipped with a tensioning shaft 30. The tensioning shaft 30 is driven by the first ejector cylinder 29 to extend out of the outer body block 27 and is used to extend into the paper core tube 18 from both ends to position the paper core tube 18. A set of conical blocks 32 driven by the second ejector cylinder 31 is also installed inside the tensioning shaft 30. Multiple sets of tensioning soft blocks 33 are circumferentially connected to the conical surface of the conical block 32. The tensioning soft blocks 33 are guided and connected to the tensioning shaft 30 and are driven by the conical blocks 32 to extend out of the surface of the tensioning shaft 30 to achieve tensioning and fixing of the inner wall of the paper core tube 18.

[0059] Thus, when the paper core tube 18 needs to be replaced, the upper roll section 2 descends between the two sets of opposing outer body blocks 27. The tensioning shaft 30 inside the outer body block 27 extends out and is placed inside the paper core tube 18, and the tensioning soft block 33 extends out to assist in positioning on the inner wall of the paper core tube 18. Then, the bottom rotating motor is started, causing the support bar to swing to the inner wall of the limiting side plate 23. At this time, the paper core tube 18 is fixed only by the tensioning shaft 30. The upper roll section 2 rises, and the bottom paper core tube 18 can be separated from the cavity, realizing the feeding of the paper core tube 18. The structure is relatively simple and the feeding is also relatively convenient. Similarly, when the partition wire needs to be unloaded, it is only necessary to extend the tensioning shaft 30 out of the paper core tube 18.

[0060] In order to reduce the number of drive structures used to drive the telescopic cutter 20, the telescopic cutter 20 can be installed on the outer side wall of the limiting side plate 23 of the inner upper cylinder 21. A set of lead screws is also installed on the outer side wall, and a set of nut blocks are threaded onto the lead screws. The nut blocks are slidably connected to the limiting side plate 23, which is used to drive the telescopic cutter 20 installed thereon to make fine adjustments to its lifting position.

[0061] The working principle of this invention is as follows: See Figures 1-3 This is a flowchart illustrating the process of the large roll A sequentially performing large roll winding at take-up position 6 and primary unwinding position 7, rotating primary unwinding position 7 to its final position, and preparing the telescopic cutter 11 for cutting. (See attached diagram.) Figure 4-12 This is a schematic diagram showing the process of the large roll A rotating from the unwinding position 7 to the fully unwinding position 8. Figure 4 In the process, the large turntable 4 rotates 90° from its initial position, positioning the large roll A at the first unwinding position 7. At this point, the small roll 15A can cooperate with the large roll A to complete one unwinding operation and then pause, waiting for the large roll B at the take-up position 6 to complete the take-up of the large roll. Then, the large turntable 4 rotates 90° again, positioning the large roll A at the fully unwinding position 8, the large roll D at the first unwinding position 7 to perform one unwinding operation, and the large roll C at the take-up position 6 to take up the roll. Figure 6As shown, in the fully unwound position 8, the roll changing upper section 2 is used to feed the paper core tube 18 onto the spare roll 16. After feeding is completed, the small turntable 14 rotates 180° clockwise, displaying the following... Figure 7 As shown, the small turntable 14 continues to rotate 180°, displaying the following... Figure 8 As shown in the diagram, the pressure take-up roller 19 can then press against the spare roller 16 and the telescopic cutter 20 to cut the roll. The spare roller 16 then rotates to rewind, allowing for another small roll rewinding operation. The rewound small roll 15A can then be unloaded. The state after rewinding and unloading is as follows: Figure 9 As shown, at this time, the upper roll section 2 feeds the paper core tube 18 onto the small roll 15A, and after the spare roll 16 completes the small roll winding, the small turntable 14 can be rotated 180° clockwise as described above to form the paper core tube 18 again. Figure 8 The only difference is that the positions of the spare roller 16 and the small winding roller 15A are reversed. Based on this, the pressing and winding roller 3 19 can be used again to press against the small winding roller 15 and the telescopic cutter 20 for cutting. Then, the small winding roller 15 rotates to wind up, allowing for another small winding operation. The spare roller 16, after winding, can then be unloaded. The states after winding and unloading are as follows... Figure 9 As shown, the spare roller 16 then rotates to rewind, allowing for another small roll rewinding operation. The small roll 15A, after rewinding, can then be unloaded. The states after rewinding and unloading are as follows. Figure 9 As shown, this cycle continues until the large roll A is unwound, and the display is as shown. Figure 10 As shown, at this time, the pressing take-up roller 19 presses against the outside of the partition to assist in the take-up of the partition at the end. After the take-up is completed, the small turntable 14 rotates 180° clockwise and the spare roller 16 waits for the partition to be unloaded, while the small roll roller 15A waits for the paper core tube 18 to be loaded. After the take-up is completed, the small turntable 14 rotates 180° clockwise again so that the small roll roller 15 with the paper core tube 18 installed is located at the outer end. At this time, the large roll roller A is in an empty state. After rotating 90° again, it can wait in the empty position 9.

[0062] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automated roll-forming production line for preparing plastic mesh products, characterized in that, The equipment includes a transition winding group located at the tail end of the plastic mesh preparation production equipment. The transition winding group is connected to the rear end of two sets of clamping rollers (1) and located at the front end of the upper roll changing section (2) and the lower roll changing section (3). It includes two sets of large turntables (4) driven by a rotary motor and arranged in parallel. Four sets of large rolls (5) are evenly mounted in the circumferential direction between the two sets of large turntables (4). The four sets of large rolls (5) are driven by a winding motor installed on the large turntables (4). When rotating in the forward direction, it is for winding operation, and when rotating in the reverse direction, it is for unwinding operation. The four sets of large rolls (5) are large roll A, large roll B, large roll C, and large roll D. Large rolls A, B, C, and D are distributed clockwise. After one rotation, when the turntable (4) rotates another 90°, the synchronous operation of the four sets of large rolls (5) is as follows: Large roll A is located at the take-up position (6), which is used to receive the spacer of the clamping roll (1) for take-up operation; large roll B is located at the first unwinding position (7), which is used to cooperate with a set of paper core tubes (18) for first unwinding. In operation, the large roll C is in the fully unwound position (8), which is used to sequentially cooperate with multiple sets of paper core tubes (18) to perform the winding operation until the large roll C is unwound. The large roll D is in the idle position (9), which is in a static state. The upper roll changing section (2) is used to feed the paper core tube (18) to the small roll (15) or spare roll (16) in the fully unwound position (8), while the lower roll changing section (3) is used to receive the paper core tube (18) that has been wound up in the fully unwound position (8). Four sets of fixed shafts (34) are evenly fixed along the circumference between the two sets of large turntables (4). The fixed shafts (34) are provided with matching grooves (35) along the axial direction. A set of drive frame one is set above the two sets of clamping rollers (1). A pressing take-up roller one (10) and a telescopic cutter one (11) are mounted on the drive frame one. The drive frame one is driven by a drive cylinder one to make linear reciprocating motion. A set of drive frame two is set above the drive frame one. A pressing take-up roller two (12) is mounted on the drive frame two. The drive frame two is driven by a drive cylinder two to make linear reciprocating motion. Four sets of take-up rollers are evenly distributed and fixed around the periphery of the large turntable (4). The four sets of take-up tables (13) correspond to the four sets of large rolls (5) respectively, and are located in the take-up position (6), the first unwind position (7), the fully unwind position (8) and the empty position (9) in sequence. Each set of take-up tables (13) is connected to a small turntable (14) driven by a rotary motor 2. The small turntables (14) between the two sets of take-up tables (13) are also set opposite to each other. A set of small rolls (15) and a set of spare rolls (16) are set between the two sets of opposite small turntables (14). The small rolls (15) and the spare rolls (16) are driven to rotate by the take-up motor 2 and the take-up motor 3 installed on the small turntables (14) respectively. When the large turntable (4) rotates 90°, the large roll (5) originally in the take-up position (6) rotates to the first unwind position (7), while the large roll (5) originally in the empty position (9) rotates to the take-up position (6). At this time, the partition between the large roll (5) and the clamping roll (1) in the first unwind position (7) passes through the small roll (15), and the first pressing take-up roll (10) is driven by the first drive frame to press against the large roll (5) in the take-up position (6), and the second pressing take-up roll (12) is driven by the second drive frame to press against the small roll (15). The first telescopic cutter (11) is driven to extend and is used to cut the partition between the take-up position (6) and the first unwind position (7). The cut partition is then rewound by the large roll (5) and the small roll (15) on the corresponding sides. Two large turntables (4) are mounted on the corresponding two side frames (17). Two sets of drive cylinders one and two drive cylinders are respectively provided and mounted on the side frames (17), and their drive ends are respectively connected to drive frame one and drive frame two. The telescopic cutter one (11) includes a telescopic cylinder mounted on drive frame one and a cutting blade one driven by the telescopic cylinder. The cutting blade one is driven by the telescopic cylinder to extend out of drive frame one and cooperates with the cooperating cutting groove (35) on the fixed shaft (34) to cut the mesh. A pressure take-up roller three (19) is also installed between the opposite take-up tables (13). The two ends of the pressure take-up roller three (19) are connected to the drive frame three. The drive frame three is driven by the drive cylinder three to make linear reciprocating motion. A telescopic cutter two (20) is installed above the small turntable (14). The telescopic cutter two (20) is driven to extend and is used to cut the partition between the small roll (15) and the spare roll (16). When it is necessary to cut the partition between the small roll (15) and the spare roll (16), When the partition is between 16), the pressing take-up roller three (19) is used to press against the small take-up roller (15) or spare roller (16) at one end near the large turntable (4) to press the partition tightly against the surface of the small take-up roller (15) or spare roller (16). As the small take-up roller (15) or spare roller (16) rotates to take-up, the first section of the cut partition is wound on the small take-up roller (15) or spare roller (16) to form a take-up pulling force on the partition on the large take-up roller (5). The small roll (15) or spare roll (16) includes an outer body block (27) driven and connected to the second or third winding motor. A set of mounting blocks (28) is linearly guided inside the body block. One side of the mounting block (28) is driven by the first ejector cylinder (29), and the other side is equipped with a tensioning shaft (30). The tensioning shaft (30) is driven by the first ejector cylinder (29) to extend out of the outer body block (27) and is used to extend into the paper core tube (18) from both ends to position the paper core tube (18). A set of conical blocks (32) driven by the second ejector cylinder (31) is also installed inside the tensioning shaft (30). Multiple sets of tensioning soft blocks (33) are circumferentially connected on the conical surface of the conical block (32). The tensioning soft blocks (33) are guided and connected to the tensioning shaft (30) and are driven by the conical block (32) to extend out of the surface of the tensioning shaft (30) to achieve tensioning and fixing of the inner wall of the paper core tube (18).

2. The automated roll-forming production line for preparing plastic mesh products according to claim 1, characterized in that, The upper roll changing section (2) is mounted on the side frame (17) and is driven by the first roll changing cylinder to descend to the fully unwinding position (8) to feed the paper core tube (18) onto the small roll (15) or the spare roll (16); the lower roll changing section (3) is mounted on the side frame (17) and is driven by the second roll changing cylinder to rise to the fully unwinding position (8) to unload the paper core tube (18) onto the small roll (15) or the spare roll (16).

3. The automated roll-forming production line for preparing plastic mesh products according to claim 1, characterized in that, The upper roll section (2) includes an inner upper roll section (21) and an outer upper roll section (22). The inner upper roll section (21) is located above the small roll (15) or spare roll (16) near the large turntable (4) and is used to feed the paper core tube (18) to the small roll (15) or spare roll (16) near the large turntable (4). The outer upper roll section (22) is located above the small roll (15) or spare roll (16) away from the large turntable (4) and is used to feed the paper core tube (18) to the small roll (15) or spare roll (16) away from the large turntable (4). The lower roll section (3) is located below the small roll (15) or spare roll (16) away from the large turntable (4) and is used to receive the winding separator unloading from the small roll (15) or spare roll (16) away from the large turntable (4).

4. The automated roll-forming production line for preparing plastic mesh products according to claim 3, characterized in that, The roll changing upper section (2) includes two sets of parallel limiting side plates (23) and two sets of parallel end plates (24). The two sets of end plates (24) are encapsulated at both ends of the two sets of limiting side plates (23), forming a cavity for the stacking of paper core tubes (18) with the limiting side plates (23). The bottom opening of the cavity is used to connect with the small roll (15) or spare roll (16) near the large turntable (4) for feeding the paper core tubes (18). The inner wall of the cavity is also provided with two sets of supports. The first set of support strips (25) is located at the bottom of the cavity and is used to support the bottom layer of paper core tube (18). The second set of support strips (26) is located above the first set of support strips (25) and is used to support the paper core tube (18) above the bottom layer of paper core tube (18). Each set of support strips includes at least four sets of rotary motors installed on the limiting side plate (23) in a rectangular distribution and support strips driven by the rotary motors to rotate. The support strips are used to support the paper core tube (18).

5. The automated roll-forming production line for preparing plastic mesh products according to claim 1, characterized in that, The telescopic cutter 2 (20) is installed on the outer side wall of the limiting side plate (23) of the inner upper cylinder (21), and a set of lead screws is also installed on the outer side wall. A set of nut blocks are threaded on the lead screws and slidably connected to the limiting side plate (23). The nut blocks are used to drive the telescopic cutter 2 (20) installed thereon to make fine adjustments to the lifting position.

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