A winding and unwinding machine for polyurethane foam production

Abstract

The present application relates to the technical field of polyurethane foam production, and particularly relates to a take-up and pay-off machine for polyurethane foam production, comprising a round rod one; a driving assembly is connected to the workbench and connected with a connecting plate one; the driving assembly is used for driving the connecting plate one to move up and down; a plurality of round rod ones are slidably connected to each connecting plate one; a pressing plate is arranged on the opposite side of each connecting plate one, and the pressing plate is fixedly connected with the corresponding round rod one; the take-up and pay-off machine can automatically replace the foam roll one and the foam roll two, and thick adhesive sheets are attached to the upper and lower sides of the foam roll one and the foam roll two during the replacement process, which is beneficial to improve the connection stability, meanwhile, the thick adhesive sheets are formed with a plurality of pits through the round rod two, and the pits are sunk into the foam roll one and the foam roll two, the thick adhesive sheets are adhered by the adhesive layer and the pits are blocked by the resistance force, so that the pulling force is resisted, and the falling phenomenon is effectively avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of polyurethane foam production. More particularly, the present application relates to a winding and unwinding machine for polyurethane foam production. BACKGROUND

[0002] In the production process of polyurethane foam, a winding and unwinding machine is needed to wind and unwind the polyurethane foam. When a single roll of polyurethane foam is used up, manual replacement operation of the polyurethane foam roll is needed. Both disassembly and installation require a lot of time, resulting in long downtime and prolonging the production process. Therefore, the prior art proposes a winding and unwinding machine that can automatically replace the polyurethane foam roll. Two rolls of polyurethane foam are manually installed on the winding and unwinding machine. When one roll of polyurethane foam is used up, the winding and unwinding machine can automatically switch to using the other roll of polyurethane foam. Subsequently, manual replacement operation of the used polyurethane foam roll can greatly reduce downtime and improve efficiency.

[0003] When the existing winding and unwinding machine switches to using the polyurethane foam roll, it cuts the polyurethane foam roll in use, then bonds the end of the standby polyurethane foam roll to the cut polyurethane foam with a thick adhesive sheet. The winding and unwinding machine drives the cut polyurethane foam to move, and the cut polyurethane foam drives the standby polyurethane foam roll to move through the thick adhesive sheet, thereby completing the switching operation. However, the existing winding and unwinding machine only bonds the polyurethane foam from the top, which has low bonding stability. If the winding force is too large, the thick adhesive sheet may fall off, resulting in failure of the winding and unwinding operation.

[0004] In view of the above, the present application provides a winding and unwinding machine for polyurethane foam production to improve the above-mentioned technical problems. SUMMARY

[0005] In order to overcome the shortcomings of low bonding stability and the risk of falling off when connecting the polyurethane foam only through the adhesive sheet, the present application provides a winding and unwinding machine for polyurethane foam production.

[0006] The technical scheme of the present application is: a winding and unwinding machine for polyurethane foam production, comprising a workbench and two connecting plates I installed on the workbench; the workbench is connected with two connecting plates I; it also comprises round rods I; the workbench is connected with a driving assembly, and the driving assembly is connected with the connecting plates I; the driving assembly is used to drive the connecting plates I to move up and down; the driving assembly is also used to drive the connecting plates I to move forward and backward; a plurality of round rods I are slidingly connected to each connecting plate I; the opposite sides of the two connecting plates I are provided with a pressing plate, and the pressing plate is fixedly connected with the corresponding round rod I; a spring is sleeved on each round rod I, one end of the spring is fixedly connected with the corresponding connecting plate I, and the other end of the spring is fixedly connected with the corresponding pressing plate; a plurality of pipes I are provided on each pressing plate; a plurality of grooves are formed on each pressing plate, and the grooves are communicated with the corresponding pipes I; a plurality of round rods II are fixedly connected to each connecting plate I, and the round rods II are slidingly connected with the corresponding connecting plates I; the round rods II have a heating function; the workbench is connected with a winding and unwinding assembly, and the winding and unwinding assembly is used to drive the foam roll I and the foam roll II to move; the workbench is connected with a cutting assembly, and the cutting assembly is used to cut the foam roll I and the foam roll II.

[0007] More preferably, the winding and unwinding assembly comprises an electric roller I, an electric roller II, an electric roller III, an electric roller IV, an electric roller V, an electric roller VI, an electric roller VII, a connecting plate II, an electric roller VIII, a connecting plate III, a motor I, a connecting block I, a pressing rod, a motor II, a movable plate and a lifting unit; the workbench is rotatably connected with the electric roller I; the workbench is rotatably connected with the electric roller II; the workbench is connected with the electric roller III; the workbench is rotatably connected with the electric roller IV; the workbench is rotatably connected with the electric roller V; the workbench is rotatably connected with the electric roller VI; the workbench is rotatably connected with the electric roller VII; the workbench is connected with the lifting unit; the lifting unit is connected with the connecting plate II; the lifting unit is used to drive the connecting plate II to move up and down; the electric roller III is rotatably connected with the connecting plate II; the connecting plate II is rotatably connected with the electric roller VIII; the connecting plate II is fixedly connected with two connecting plates III; the workbench is also connected with a connecting plate III; a plurality of motor Is are fixedly connected to each connecting plate III; a connecting block I is fixedly connected to the output end of each motor I; a pressing rod is provided above each connecting plate III, and the pressing rod is fixedly connected with the corresponding connecting block I; a plurality of motor IIs are fixedly connected to each connecting plate III; a movable plate is rotatably connected to each connecting plate III, and the movable plate is fixedly connected with the output end of the corresponding motor II.

[0008] More preferably, the cutting assembly comprises a multi-stage hydraulic telescopic rod and a cutter; the workbench is fixedly connected with the multi-stage hydraulic telescopic rod; the cutter is fixedly connected to the telescopic end of the multi-stage hydraulic telescopic rod.

[0009] More preferably, the driving assembly comprises the electric sliding rail one, the electric sliding block one and the telescopic cylinder; a plurality of electric sliding rail ones are fixedly connected to the workbench; each electric sliding rail one is slidably connected with an electric sliding block one; each electric sliding block one is fixedly connected with a telescopic cylinder, and the telescopic end of the telescopic cylinder is fixedly connected with the corresponding connecting plate one.

[0010] More preferably, it further comprises a limiting strip; each end of the pressing plate is fixedly connected with a limiting strip.

[0011] More preferably, it further comprises a heating ring; a plurality of heating rings are fixedly connected to each pressing plate, and the heating rings are aligned with the corresponding round rods two.

[0012] More preferably, it further comprises an anti-deviation assembly, and the anti-deviation assembly comprises the pipeline two and the soft rubber ring; the round rod two is provided in a hollow structure; each round rod two is communicated with a pipeline two; each round rod two is fixedly connected with a soft rubber ring; each round rod two is provided with a round hole, and the round hole is aligned with the corresponding soft rubber ring.

[0013] More preferably, it further comprises a partition block; each inner side of the round rod two is fixedly connected with a partition block; the partition block divides the inner side of the round rod two into a U-shaped channel.

[0014] More preferably, it further comprises a fin; a plurality of fins are fixedly connected to each inner side of the round rod two.

[0015] More preferably, it further comprises an auxiliary assembly, and the auxiliary assembly comprises the electric roller nine, the connecting block two, the electric roller ten, the electric sliding rail three and the electric sliding block three; a plurality of electric rollers nine are rotatably connected to the workbench; a plurality of electric sliding rails three are fixedly connected to the workbench; each electric sliding rail three is slidably connected with an electric sliding block three; all the electric sliding blocks three are fixedly connected with the connecting block two; a plurality of electric rollers ten are rotatably connected to the connecting block two.

[0016] Beneficial effects: 1. The take-up and pay-off machine can automatically replace the foam roll one and the foam roll two. During the replacement process, thick adhesive sheets can be bonded on the upper and lower sides of the foam roll one and the foam roll two, which is beneficial to improve the connection stability. At the same time, the round rod two forms a plurality of pits on the thick adhesive sheet, and the pits are sunk into the foam roll one and the foam roll two. The adhesive force of the thick adhesive sheet and the blocking force of the pits resist the pulling force, effectively avoiding the phenomenon of falling off;

[0017] 2. The limiting strip blocks and limits the pressing plate, avoiding the pressing plate from flattening the foam roll one and the foam roll two, so that the pits of the thick adhesive sheet can be fully sunk into the foam roll one and the foam roll two, improving the fixing effect of the foam roll one and the foam roll two;

[0018] III. By replacing the round rod II with a heating ring, the heating ring is used to heat and soften the outer edge of the thick rubber sheet at the position to be extruded, so that the tip of the round rod II does not pierce the thick rubber sheet in the extrusion process, and the concave pits can be used to fix the foam roll I and the foam roll II, which is beneficial to ensure the stability of the connection;

[0019] IV. In the extrusion process, the thick rubber sheet is sucked tightly by the soft rubber ring, so that the slipping phenomenon is avoided, the softening position of the thick rubber sheet can be uniformly deformed, the structure stability of the concave pit can be ensured, and the fixing effect of the foam roll I and the foam roll II is ensured, and at the same time, the pipeline II used for sucking and fixing the thick rubber sheet can also be used for cooling the concave pit of the thick rubber sheet, so that the thick rubber sheet is quickly hardened, which is beneficial to improve the efficiency, and the fins arranged in the inner side of the round rod II can improve the heat exchange area, so that the cooling effect of the concave pit of the thick rubber sheet is improved;

[0020] V. The foam roll I is buffered by the motor roller IX and the motor roller X, so that the motor roller V can continuously wind the buffered foam roll I during the switching process of the foam roll I and the foam roll II, without the need to pause the winding operation, which is beneficial to ensure the orderly progress of the subsequent process. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The structure schematic diagram of the take-up and pay-off machine for polyurethane foam production is shown;

[0022] Figure 2 The structure schematic diagram of the foam roll I and the foam roll II is shown;

[0023] Figure 3 The structure schematic diagram of the take-up and pay-off assembly of the application is shown;

[0024] Figure 4 The structure schematic diagram of the application Figure 3 The enlarged view of A in the application is shown;

[0025] Figure 5 The structure schematic diagram of the driving assembly of the application is shown;

[0026] Figure 6 The structure schematic diagram of the pipeline I of the application is shown;

[0027] Figure 7 The structure schematic diagram of the anti-deviation assembly of the application is shown;

[0028] Figure 8 The structure schematic diagram of the fin of the application is shown.

[0029] The diagram is labeled as follows: 1-Workbench, 2-Connecting Plate 1, 3-Round Rod 1, 4-Pressure Plate, 5-Spring, 6-Pipe 1, 7-Round Rod 2, 8-Foam Roll 1, 9-Foam Roll 2, 201-Electric Roll 1, 202-Electric Roll 2, 203-Electric Roll 3, 204-Electric Roll 4, 205-Electric Roll 5, 206-Electric Roll 6, 207-Electric Roll 7, 208-Connecting Plate 2, 209-Electric Roll 8, 2010-Connecting Plate 3, 2011-Motor 1, 2012-Connecting Block 1, 2013-Pressure Rod, 2014-Motor 2, 2015-Lever Moving plate, 2016-Multi-stage hydraulic telescopic rod, 2017-Cutter, 2018-Electric slide rail one, 2019-Electric slider one, 2020-Telescopic cylinder, 2021-Electric slide rail two, 2022-Electric slider two, 2023-Heating ring, 2024-Pipe two, 2025-Soft rubber ring, 2026-Spacer block, 2027-Fin, 2028-Electric roller nine, 2029-Connecting block two, 2030-Electric roller ten, 2031-Electric slide rail three, 2032-Electric slider three, 2033-Limiting strip, 91-Groove, 92-Round hole. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but this does not limit the scope of protection and application of the present invention. Example 1

[0031] A winding and unwinding machine for polyurethane foam production, such as Figures 1-8 As shown, it includes a worktable 1 and connecting plates 2; two connecting plates 2 are connected to the worktable 1; it also includes round rods 3, pressure plates 4, springs 5, pipes 6, round rods 7, a winding / unwinding assembly, a cutting assembly, and a drive assembly; the drive assembly is connected to the worktable 1 and is connected to the connecting plates 2; the drive assembly is used to drive the connecting plates 2 to move up and down and back and forth; four round rods 3 are slidably connected to each connecting plate 2; a pressure plate is provided on each of the opposing sides of the two connecting plates 2. 4. The pressure plate 4 is fixedly connected to the corresponding round rod 3; four springs 5 ​​are fixedly connected between each connecting plate 2 and the corresponding pressure plate 4; four pipes 6 are passed through each pressure plate 4; four grooves 91 are opened on each pressure plate 4, and the grooves 91 are connected to the corresponding pipes 6; several round rods 7 are fixedly connected to each connecting plate 2, and the round rods 7 are slidably connected to the corresponding connecting plate 2; the round rods 7 have a heating function; a winding and unwinding assembly is connected to the worktable 1; a cutting assembly is connected to the worktable 1.

[0032] The winding and unwinding assembly comprises electric roller one 201, electric roller two 202, electric roller three 203, electric roller four 204, electric roller five 205, electric roller six 206, electric roller seven 207, connecting plate two 208, electric roller eight 209, connecting plate three 2010, motor one 2011, connecting block one 2012, pressing rod 2013, motor two 2014, movable plate 2015 and lifting unit; the upper part of the workbench 1 is rotatably connected with the electric roller one 201; the upper part of the workbench 1 is rotatably connected with the electric roller two 202; the workbench 1 is connected with the electric roller three 203; the upper part of the workbench 1 is rotatably connected with the electric roller four 204; the upper part of the workbench 1 is rotatably connected with the electric roller five 205; the upper part of the workbench 1 is rotatably connected with the electric roller six 206; the upper part of the workbench 1 is rotatably connected with the electric roller seven 207; the workbench 1 is connected with the lifting unit; the lifting unit is connected with the connecting plate two 208, and the connecting plate two 208 is made of alloy material; the electric roller three 203 is rotatably connected with the connecting plate two 208; the electric roller eight 209 is rotatably connected with the connecting plate two 208; two connecting plate threes 2010 are welded on the connecting plate two 208; one connecting plate three 2010 is also connected on the workbench 1; two motor ones 2011 are fixedly connected on each connecting plate three 2010; one connecting block one 2012 is fixedly connected at the output end of each motor one 2011; one pressing rod 2013 is arranged above each connecting plate three 2010, and the pressing rod 2013 is fixedly connected with the corresponding connecting block one 2012; two motor twos 2014 are fixedly connected on each connecting plate three 2010; one movable plate 2015 is rotatably connected on each connecting plate three 2010, and the movable plate 2015 is fixedly connected with the output end of the corresponding motor two 2014, so that the movable plate 2015 is driven to rotate by the motor two 2014.

[0033] The cutting assembly comprises multi-stage hydraulic telescopic rods 2016 and cutters 2017; the upper part of the workbench 1 is boltedly connected with the multi-stage hydraulic telescopic rods 2016; the cutters 2017 are fixedly connected with the movable ends of the multi-stage hydraulic telescopic rods 2016, so that the cutters 2017 cut the foam roll one 8 or the foam roll two 9.

[0034] The driving assembly comprises electric sliding rails one 2018, electric sliding blocks one 2019 and telescopic cylinders 2020; two electric sliding rails one 2018 are boltedly connected on the workbench 1; one electric sliding block one 2019 is slidably connected on each electric sliding rail one 2018; one telescopic cylinder 2020 is fixedly connected on each electric sliding block one 2019, and the movable end of the telescopic cylinder 2020 is fixedly connected with the corresponding connecting plate one 2, so that the connecting plate one 2 is driven to move up and down by the telescopic cylinder 2020.

[0035] First, the artificial external air pump is connected to the pipeline 6, and then the non-sticky surface of the thick adhesive film is attached to the pressing plate 4. The external air pump is used to inhale air to make the recess 91 in a negative pressure state, so that the thick adhesive film is tightly attached to the pressing plate 4. During work, the foam roll 8 is wound by the electric roller 205, and the foam roll 8 is unwound by the electric roller 201, so that the foam roll 8 moves to the right. During this process, the electric roller 202, the electric roller 203 and the electric roller 204 are controlled to rotate, so that the electric roller 202, the electric roller 203 and the electric roller 204 move synchronously with the foam roll 8. At this time, the foam roll 8 moving to the right can be cut by the external die-cutting mechanism. The waste material of the cut foam roll 8 is wound by the electric roller 205, and the basic winding and unwinding operation is completed.

[0036] When the foam roll one 8 is about to run out, the motor roller one 201 and the motor roller five 205 stop rotating to stop the movement of the foam roll one 8, the round rod two 7 is heated to a high temperature state, the two motors one 2011 on the top are started, the motors one 2011 drive the connecting block one 2012 to rotate, the connecting block one 2012 drives the pressure rod 2013 to make a circular motion, so that the two pressure rods 2013 on the top simultaneously press the foam roll one 8 tightly on the corresponding connecting plate three 2010, then the multi-stage hydraulic telescopic rod 2016 drives the cutter 2017 to move forward, the foam roll one 8 is cut off through the cutter 2017, the foam roll one 8 located on the motor roller one 201 is set as the left foam roll one 8, and the foam roll one 8 located on the motor roller five 205 is set as the right foam roll one 8, at this time, the left foam roll one 8 end, the right foam roll one 8 end and the foam roll two 9 end are clamped by the corresponding connecting plate three 2010 and the pressure rod 2013, then the motor sliding rail two 2021 and the motor sliding block two 2022 are started, the motor sliding block two 2022 drives the connecting plate two 208 to move upwards, the two connecting plate three 2010 on the left of the connecting plate two 208 and the parts thereon move upwards, so as to drive the left foam roll one 8 to move upwards away from the right foam roll one 8, and drive the foam roll two 9 to move upwards to align with the right foam roll one 8, the two motors two 2014 located on the bottom are started at this time, the motors two 2014 drive the movable plate 2015 to rotate, so that the two movable plates 2015 located on the bottom are rotated to the lower side of the corresponding connecting plate three 2010, so that the foam roll two 9 end and the right foam roll one 8 end are exposed, then the motor sliding rail one 2018 and the motor sliding block one 2019 are started, so that the motor sliding block one 2019 drives the telescopic air cylinder 2020 to move forward, the telescopic air cylinder 2020 drives the parts thereon to move forward, the intersection of the foam roll two 9 end and the right foam roll one 8 end is called the to-be-bonding position, the two pressure plates 4 move to the upper side and the lower side of the to-be-bonding position respectively, the two pressure plates 4 drive the thick adhesive sheets to move to the upper side and the lower side of the to-be-bonding position, then the telescopic air cylinder 2020 drives the connecting plate one 2 and the parts thereon to move, so that the pressure plates 4 respectively adhere the two thick adhesive sheets to the upper side and the lower side of the to-be-bonding position, so as to fix the foam roll two 9 end and the right foam roll one 8 end together, the telescopic air cylinder 2020 drives the connecting plate one 2 to continue to move, at this time, the pressure plates 4 are blocked and cannot continue to move, so that the connecting plate one 2 slides on the round rod one 3 and compresses the spring 5, the connecting plate one 2 drives the round rod two 7 to move towards the thick adhesive sheet, so that the high-temperature round rod two 7 contacts the thick adhesive sheet, the thick adhesive sheet becomes soft after being heated, and the foam roll one 8 has a certain thickness and soft texture, then the round rod two 7 continues to move to extrude the thick adhesive sheet, so as to extrude a plurality of pits in the thick adhesive sheet, and the pits will sink into the left foam roll one 8 and the foam roll two 9, the round rod two 7 stops heating, so that the pits are cooled and hardened, which is helpful to increase the connection stability, then the external air pump stops inhaling air through the pipeline one 6, so that the recess 91 returns to the normal pressure state, thereby stopping the thick adhesive sheet from being tightly sucked,Then the electric sliding block 1 2019 and telescopic air cylinder 2020 and drive the connecting plate 1 2 and the parts on it upward to the original position, start the electric roller five 205 and electric roller six 206, the electric roller five 205 to the right foam roll 1 8 winding, electric roller six 206 to foam roll 2 9 winding, so that the right foam roll 1 8 through the thick film drive foam roll 2 9 to the right movement, complete the automatic switching operation, in this process, not only can through the thick film of the adhesive force to resist the pulling force between the right foam roll 1 8 and foam roll 2 9, but also through the thick film pit and right foam roll 1 8 and foam roll 2 9 between the blocking force to resist the pulling force, can effectively avoid the problem of falling, start the electric roller seven 207 and electric roller eight 209, so that the electric roller seven 207 and electric roller eight 209 and foam roll 2 9 synchronous movement, then artificial left foam roll 1 8 from the electric roller 1 201, and install a new foam roll 1 8 on the electric roller 1 201 standby; in use, this winding and unwinding machine can automatically replace the foam roll 1 8 and foam roll 2 9 operation, replacement process can be in the upper and lower sides of foam roll 1 8 and foam roll 2 9 are bonded thick film, help to improve the connection stability, at the same time, through the round bar 2 7 makes the thick film on the formation of several pits, and make the pit into the foam roll 1 8 and foam roll 2 9 inside, through the thick film of the adhesive force and thick film pit resistance force together to resist the pulling force, effectively avoid the phenomenon of falling.

[0037] The lifting unit comprises an electric sliding rail 2 021 and an electric sliding block 2 022; the electric sliding rail 2 021 is bolted on the workbench 1; the electric sliding block 2 022 is slidably connected on the electric sliding rail 2 021, and the electric sliding block 2 022 is fixedly connected with the connecting plate 2 208; the connecting plate 2 208 is driven by the electric sliding block 2 022 to move up and down.

[0038] Further comprising a limiting strip 2 033; each end of the pressing plate 4 is fixedly connected with a limiting strip 2 033.

[0039] During the bonding process, the two pressing plates 4 move towards each other to extrude the foam roll one 8 and the foam roll two 9, so as to flatten the foam roll one 8 and the foam roll two 9, thereby limiting the movement distance of the end of the round rod two 7 into the foam roll one 8 and the foam roll two 9, resulting in a relatively low pit formed on the thick adhesive sheet, and a low fixing effect. Therefore, the limiting strip 2033 is arranged at the end of the pressing plate 4, the limiting strip 2033 is located beyond the edge of the foam roll one 8 and the foam roll two 9, and after the pressing plate 4 moves towards each other to bond the thick adhesive sheet on the foam roll one 8 and the foam roll two 9, the upper and lower adjacent two limiting strips 2033 are in contact, then the extension cylinder 2020 drives the connecting plate one 2 and the parts thereon to continue to move, while the pressing plate 4 is blocked by the limiting strip 2033 and cannot continue to move, so that the connecting plate one 2 slides on the round rod one 3 and compresses the spring 5, and the connecting plate one 2 drives the round rod two 7 to extrude the thick adhesive sheet. During this process, the pressing plate 4 is blocked by the limiting strip 2033 and cannot flatten the foam roll one 8 and the foam roll two 9, so that the round rod two 7 can fully extrude the thick adhesive sheet, so that the pit of the thick adhesive sheet is deeply sunk into the foam roll one 8 and the foam roll two 9, which is beneficial to improve the connection stability. When in use, the limiting strip 2033 blocks and limits the pressing plate 4, so as to avoid the pressing plate 4 from flattening the foam roll one 8 and the foam roll two 9, so that the pit of the thick adhesive sheet can be fully sunk into the foam roll one 8 and the foam roll two 9, thereby improving the fixing effect of the foam roll one 8 and the foam roll two 9.

[0040] The heating ring 2023 is further included, and a plurality of heating rings 2023 aligned with the round rod two 7 are fixed on each pressing plate 4.

[0041] During the extrusion process of the round rod two 7 on the thick adhesive sheet, the tip of the round rod two 7 is easy to pierce the softened thick adhesive sheet, resulting in a low pit height formed by extrusion, thereby causing the fixing effect to decrease. Therefore, the heating ring 2023 is additionally arranged on the pressing plate 4, after the thick adhesive sheet is bonded on the foam roll one 8 and the foam roll two 9, the outer edge of the position to be extruded of the thick adhesive sheet is heated and softened by the heating ring 2023, while the round rod two 7 is not heated, so that the position to be extruded of the thick adhesive sheet remains in a hard state, and then the thick adhesive sheet is extruded by the round rod two 7. During this process, the tip of the round rod two 7 does not pierce the thick adhesive sheet in a hard state, so that the pit formed by stable extrusion can fix the foam roll one 8 and the foam roll two 9; when in use, the heating ring 2023 replaces the round rod two 7 to heat, so that the outer edge of the position to be extruded of the thick adhesive sheet is heated and softened by the heating ring 2023, so that the tip of the round rod two 7 does not pierce the thick adhesive sheet in a hard state during the extrusion process, so that the pit formed by stable extrusion can fix the foam roll one 8 and the foam roll two 9, which is beneficial to ensure the connection stability.

[0042] Further comprising a deviation prevention assembly, the deviation prevention assembly comprising the pipe 2024 and the soft rubber ring 2025; the second round rod 7 is provided as a hollow structure; each second round rod 7 is fixedly connected with the pipe 2024; each second round rod 7 is fixedly connected with a soft rubber ring 2025; each second round rod 7 is provided with a round hole 92, and the round hole 92 is aligned with the corresponding soft rubber ring 2025.

[0043] The heating ring 2023 heats and softens the outer edge of the thick rubber sheet at the position to be extruded, and then the second round rod 7 extrudes the thick rubber sheet. The second round rod 7 and the thick rubber sheet may slip, which causes the softening part of the thick rubber sheet to be unable to stretch uniformly, and the structural stability is low. Therefore, the soft rubber ring 2025 is arranged on the second round rod 7. First, the external air pump is connected to the pipe 2024 by artificial operation, and then the thick rubber sheet is sucked tightly on the pressing plate 4. The pressing plate 4 is in close contact with the soft rubber ring 2025. The external air pump sucks air through the pipe 2024, and the inner space of the soft rubber ring 2025 is communicated with the inner space of the second round rod 7 through the round hole 92, so that the soft rubber ring 2025 is sucked tightly on the thick rubber sheet. During the extrusion of the thick rubber sheet by the second round rod 7, the thick rubber sheet is sucked tightly by the soft rubber ring 2025, and the slipping phenomenon does not occur. Therefore, the hard part of the thick rubber sheet corresponding to the second round rod 7 can move stably downward, so that the softening position of the thick rubber sheet can deform uniformly, which is beneficial to ensure the structural stability of the pit. Then, the external air pump delivers air to the pipe 2024, so that the inner side of the second round rod 7 returns to the normal pressure state, and the soft rubber ring 2025 stops sucking the thick rubber sheet. In use, the thick rubber sheet is sucked tightly by the soft rubber ring 2025 during the extrusion process, so as to avoid the slipping phenomenon, make the softening position of the thick rubber sheet deform uniformly, and ensure the structural stability of the pit, thereby ensuring the fixing effect of the foam roll 8 and the foam roll 9.

[0044] Further comprising a partition block 2026; each second round rod 7 is fixedly connected with a partition block 2026 in the middle of the inner side, the partition block 2026 can be made of metal material, and the partition block 2026 can also be made of plastic material; the partition block 2026 divides the inner side of the second round rod 7 into a U-shaped channel.

[0045] The inner side of the second round rod 7 is divided into a U-shaped channel by the partition block 2026. After extrusion is completed, air is delivered to one of the pipes 2024 by the external air pump, and air is sucked from the other pipe 2024, so that air flows in the U-shaped channel, and the second round rod 7 is cooled, thereby cooling and cooling the pit of the thick rubber sheet, so that it hardens quickly, which is beneficial to improve the efficiency. In use, the pipe 2024 used to suck and fix the thick rubber sheet can also be used to cool and cool the pit of the thick rubber sheet, so that it hardens quickly, which is beneficial to improve the efficiency.

[0046] Further comprising a fin 2027; each second round rod 7 is fixedly connected with a plurality of fins 2027, which is beneficial to improve the heat exchange area.

[0047] Fins 2027 are installed on the inner side of the round rod 2 7 to increase the heat exchange area, thereby improving the cooling effect on the thick film pit. Example 2

[0048] Based on Example 1, such as Figure 3 As shown, it also includes auxiliary components, including electric roller nine 2028, connecting block two 2029, electric roller ten 2030, electric slide rail three 2031, and electric slider three 2032; four electric roller nine 2028 are rotatably connected to the upper part of the worktable 1; two electric slide rails three 2031 are bolted to the upper part of the worktable 1; one electric slider three 2032 is slidably connected to each electric slide rail three 2031; all electric sliders three 2032 are fixedly connected to the connecting block two 2029, which is made of metal; three electric roller ten 2030 are rotatably connected to the connecting block two 2029.

[0049] During the replacement of foam roll 1 (8) and foam roll 2 (9), the electric roller 5 (205) needs to pause its winding operation, which also requires pausing the die-cutting operation. Therefore, an auxiliary component is installed on the worktable 1. During replacement, the end of the right foam roll 1 (8) is pressed tightly by the connecting plate 3 (2010) and the pressure rod 2013, while the electric roller 5 (205) continues its winding operation. During this process, the electric slide rail 3 (2031) and the electric slider 3 (2032) are activated. The electric slider 3 (2032) drives the connecting block 2 (2029) to move upward, which in turn drives the electric roller 10 (2030) to move upward, shortening the distance between the electric roller 10 (2030) and the electric roller 9 (2028). This shortens the length of the right foam roll 1 (8) wound between the connecting block 2 (2029) and the electric roller 10 (2030). The electric roller 5 (205) continues to press the foam roll 1 (8) against the electric roller 9 (2028). The rewinding process keeps the right foam roll 8 taut at all times. After replacement, the electric roller 6 206 appropriately increases the unwinding speed, while the electric slider 3 2032 controls the electric roller 10 2030 to move downwards, increasing the distance between the electric roller 10 2030 and the electric roller 9 2028. When the electric roller 9 2028 reaches its lowest point, the unwinding speed of the electric roller 6 206 is reduced, allowing the electric roller 6 206 and the electric roller 5 205 to rotate synchronously, completing the reset operation. In use, the electric rollers 9 2028 and 10 2030 work together to buffer the foam roll 8, allowing the electric roller 5 205 to continuously rewind the buffered foam roll 8 during the switching between foam roll 8 and foam roll 2 9 without pausing the rewinding operation, which helps ensure the orderly progress of subsequent processes.

[0050] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A winding and unwinding machine for polyurethane foam production, comprising a worktable (1) and two connecting plates I (2) installed on the worktable (1); characterized in that: The utility model also includes a round rod one (3), the workbench (1) is connected with drive assembly, drive assembly is connected with connecting plate one (2), drive assembly is used for driving connecting plate one (2) and moves up and down, drive assembly is also used for driving connecting plate one (2) and moves back and forth, every connecting plate one (2) all slidingly connected with a plurality of round rod one (3), the opposite side of two connecting plate one (2) all is provided with a pressing plate (4), and the pressing plate (4) is fixed with corresponding round rod one (3), every round rod one (3) all is set with a spring (5), and one end of spring (5) is fixed with corresponding connecting plate one (2), and the other end of spring (5) is fixed with corresponding pressing plate (4), every connecting plate one (2) all is provided with a plurality of pipelines one (6), every pressing plate (4) all is provided with a plurality of recesses (91), and recess (91) is communicated with corresponding pipeline one (6), every connecting plate one (2) all is fixed with a plurality of round rod two (7), and round rod two (7) is slidingly connected with corresponding pressing plate (4), the workbench (1) is connected with take-up and pay-off assembly, and take-up and pay-off assembly is used for driving foam roll one (8) and foam roll two (9) movement, the workbench (1) is connected with cutting assembly, and cutting assembly is used for cutting foam roll one (8) and foam roll two (9); The utility model also includes a limiting strip (2033), and every pressing plate (4) end all is fixed with a limiting strip (2033); The utility model also includes a heating ring (2023), and every pressing plate (4) all is fixed with a plurality of heating rings (2023), and heating ring (2023) is aligned with corresponding round rod two (7); The utility model also includes an anti-deviation assembly, and the anti-deviation assembly includes a pipeline two (2024) and a soft rubber ring (2025), the round rod two (7) is provided with a hollow structure, every round rod two (7) all is communicated with a pipeline two (2024), and every round rod two (7) lower end all is fixed with a soft rubber ring (2025), every round rod two (7) all is provided with a round hole (92), and round hole (92) is aligned with corresponding soft rubber ring (2025).

2. The winding and unwinding machine for producing polyurethane foam according to claim 1, characterized in that: The winding and unwinding assembly comprises a first electric roller (201), a second electric roller (202), a third electric roller (203), a fourth electric roller (204), a fifth electric roller (205), a sixth electric roller (206), a seventh electric roller (207), a second connecting plate (208), an eighth electric roller (209), a third connecting plate (2010), a first motor (2011), a first connecting block (2012), a pressing rod (2013), a second motor (2014), a movable plate (2015) and a lifting unit; the first electric roller (201) is rotatably connected to the workbench (1); the second electric roller (202) is rotatably connected to the workbench (1); the third electric roller (203) is connected to the workbench (1); the fourth electric roller (204) is rotatably connected to the workbench (1); the fifth electric roller (205) is rotatably connected to the workbench (1); the sixth electric roller (206) is rotatably connected to the workbench (1); the seventh electric roller (207) is rotatably connected to the workbench (1); the lifting unit is connected to the workbench (1); the second connecting plate (208) is connected to the lifting unit; the lifting unit drives the second connecting plate (208) to move up and down; the third electric roller (203) is rotatably connected to the second connecting plate (208); the eighth electric roller (209) is rotatably connected to the second connecting plate (208); two third connecting plates (2010) are fixedly connected to the second connecting plate (208); one third connecting plate (2010) is also connected to the workbench (1); a plurality of first motors (2011) are fixedly connected to each third connecting plate (2010); a first connecting block (2012) is fixedly connected to the output end of each first motor (2011); a pressing rod (2013) is arranged above each third connecting plate (2010); the pressing rod (2013) is fixedly connected to the corresponding first connecting block (2012); a plurality of second motors (2014) are fixedly connected to each third connecting plate (2010); a movable plate (2015) is rotatably connected to each third connecting plate (2010); the movable plate (2015) is fixedly connected to the output end of the corresponding second motor (2014).

3. The winding and unwinding machine for producing polyurethane foam according to claim 2, characterized in that: The cutting assembly comprises a multi-stage hydraulic telescopic rod (2016) and a cutter (2017); the multi-stage hydraulic telescopic rod (2016) is fixedly connected to the workbench (1); the cutter (2017) is fixedly connected to the telescopic end of the multi-stage hydraulic telescopic rod (2016).

4. The winding and unwinding machine for producing polyurethane foam according to claim 3, characterized in that: The driving assembly comprises a first electric sliding rail (2018), a first electric sliding block (2019) and a telescopic cylinder (2020); a plurality of first electric sliding rails (2018) are fixedly connected to the workbench (1); a first electric sliding block (2019) is slidably connected to each first electric sliding rail (2018); a telescopic cylinder (2020) is fixedly connected to each first electric sliding block (2019); the telescopic end of the telescopic cylinder (2020) is fixedly connected to the corresponding connecting block (2).

5. The winding and unwinding machine for producing polyurethane foam according to claim 4, characterized in that: The spacer (2026) is further provided; one spacer (2026) is fixedly connected to the inner side of each second circular rod (7); the spacer (2026) divides the inner side of the second circular rod (7) into a U-shaped channel.

6. The winding and unwinding machine for producing polyurethane foam according to claim 5, characterized in that: Further include fin (2027); each round pole two (7) inside is fixed with a plurality of fin (2027).

7. The winding and unwinding machine for producing polyurethane foam according to any one of claims 5-6, characterized in that: Further include auxiliary assembly, auxiliary assembly includes electric roller nine (2028), connecting block two (2029), electric roller ten (2030), electric sliding rail three (2031) and electric sliding block three (2032); Workbench (1) is rotatably connected with a plurality of electric roller nine (2028); Workbench (1) is fixedly connected with a plurality of electric sliding rail three (2031); Each electric sliding rail three (2031) is slidably connected with one electric sliding block three (2032); All electric sliding block three (2032) are commonly fixedly connected with connecting block two (2029); Connecting block two (2029) is rotatably connected with a plurality of electric roller ten (2030).

Images