Roll-to-roll flexible circuit board winding and correcting device

Abstract

The application provides a kind of roll-to-roll flexible circuit board winding deviation correction device, belong to the technical field of printed circuit equipment, including winding unit and deviation correction unit, the winding unit has lower frame, upper frame located above the lower frame, winding part rotationally connected to the upper frame and drive member transmission connection with the winding part, the upper frame is slidably connected with the lower frame along horizontal direction, the rotation axis of the winding part is parallel to the sliding direction of the upper frame;The deviation correction unit has first telescopic member fixed between the upper frame and the lower frame and first sensor for monitoring the edge position of the roll material, the first telescopic member is adjustable in length along horizontal direction, and the first telescopic member is communicatively connected with the first sensor.The application reduces the possibility of roll material deviation.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of printed circuit devices, and particularly relates to a roll-to-roll flexible circuit board winding and deviation correcting device. BACKGROUND

[0002] With the rapid development of the electronic industry, flexible circuit boards (FPC) have been widely used in the fields of smart phones, tablet computers, wearable devices, medical electronics and automotive electronics due to their excellent flexibility, high reliability and foldability.

[0003] In the production process of flexible circuit boards, the roll-to-roll production process is favored due to its high efficiency and high degree of automation. However, during the roll-to-roll winding process, due to factors such as uneven material tension, equipment precision error or improper operation, the winding material often deviates. SUMMARY

[0004] The embodiment of the present application provides a roll-to-roll flexible circuit board winding and deviation correcting device, aiming to solve the technical problem of winding material deviation.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present application is to provide a roll-to-roll flexible circuit board winding and deviation correcting device, comprising:

[0006] A winding unit has a lower rack, an upper rack located above the lower rack, a winding part rotatably connected to the upper rack, and a driving member in transmission connection with the winding part. The upper rack is slidingly connected to the lower rack in the horizontal direction, and the rotating shaft of the winding part is parallel to the sliding direction of the upper rack;

[0007] A deviation correcting unit has a first telescopic member fixed between the upper rack and the lower rack, and a first sensor for monitoring the edge position of the winding material. The movable end of the first telescopic member is fixedly connected to the upper rack, and the first telescopic member is adjustable in length along the horizontal direction. The first telescopic member is in communication connection with the first sensor;

[0008] Wherein, the first sensor monitors the actual position of the winding material edge position in real time, the first sensor pre-sets a standard position, and when the actual position and the standard position do not coincide, the first telescopic member drives the upper rack to move from the standard position to the actual position.

[0009] In a possible implementation manner, the winding unit further comprises:

[0010] An air inflation shaft forms the winding part, the air inflation shaft is provided with an air cavity inside, the outer wall of the air inflation shaft is provided with a plurality of through grooves in communication with the air cavity, and a key strip is slidingly connected in the radial direction of the air inflation shaft in the through groove;

[0011] an inflatable member in communication with the air cavity;

[0012] The inflatable member inflates into the air cavity, and the gas inflated into the air cavity presses the key bar to extend out of the through slot.

[0013] In a possible implementation, the air expansion shaft is provided with a second sensor for monitoring the weight of the material wound on the air expansion shaft.

[0014] The winding unit further comprises a pressure controller in communication with the second sensor, the pressure controller being configured to adjust the pressure in the air cavity.

[0015] The greater the weight of the material wound on the air expansion shaft, the greater the pressure in the air cavity.

[0016] In a possible implementation, the bottom of the upper rack is detachably connected with a guide roller, the guide roller is axially parallel to the air expansion shaft and located on the front side of the air expansion shaft, a support horizontally placed is arranged on one side of the guide roller, the support is fixedly connected with the upper rack, and the first sensor is detachably connected with the support.

[0017] In a possible implementation, the winding device further comprises a plurality of stabilizing units arranged on the bottom wall of the lower rack, and each stabilizing unit comprises an adsorption portion fixedly connected with the bottom wall of the lower rack.

[0018] In a possible implementation, the stabilizing unit further comprises:

[0019] An adsorption block forms the adsorption portion, and the adsorption block has an operation cavity.

[0020] A piston plate is slidably connected in the operation cavity in the vertical direction.

[0021] The roll-to-roll flexible circuit board winding and deviation correcting device further comprises a power unit, the power unit has a first transmission assembly extending into the operation cavity, and the first transmission assembly is configured to drive the piston plate to slide.

[0022] In a possible implementation, the first transmission assembly comprises:

[0023] A second telescopic member is fixedly arranged on the inner wall of the operation cavity.

[0024] A transmission seat is fixedly connected to the bottom end of the second telescopic member, the transmission seat is provided with a transmission cavity extending upward and downward, and the inner wall of the transmission cavity has a spiral transmission groove.

[0025] A transmission roller extends through the transmission cavity, the outer wall of the transmission roller is fixedly provided with a transmission block, the transmission roller is screw-connected with the piston plate, and the outer wall of the transmission roller is fixedly provided with a transmission block matched with the transmission groove.

[0026] In a possible implementation, the bottom wall of the adsorption block is provided with a ring groove, which is arranged at the outer periphery of the operation cavity, and a sealing ring is slidably connected in the vertical direction in the ring groove;

[0027] The power unit further comprises a second transmission assembly for driving the sealing ring to move downward and abut against the ground.

[0028] In a possible implementation, the adsorption block is provided with a linkage cavity communicated between the ring groove and the operation cavity, the transmission roller has an optical rod, a transmission rod and a threaded rod arranged in sequence from top to bottom, the transmission block is arranged on the transmission rod, and the threaded rod is screwed with the piston plate;

[0029] The second transmission assembly comprises:

[0030] A pressing ring is arranged at the outer periphery of the transmission seat;

[0031] A plurality of pressing rods are arranged, one end of each of the pressing rods is fixedly connected with the pressing ring, the other end of each of the pressing rods penetrates through the linkage cavity and is fixedly connected with the sealing ring, and each of the pressing rods is slidably connected with the adsorption block in the vertical direction;

[0032] A plurality of first elastic members are arranged and fixed between the transmission seat and the pressing ring;

[0033] When the second telescopic member extends downward to drive the transmission seat to move downward, the elastic force of the first elastic member is not overcome, the transmission seat drives the sealing ring to abut against the ground through the pressing ring and the pressing rod, and at the same time, the transmission block starts to enter the bottom end of the transmission groove; when the second telescopic member continues to extend to drive the transmission seat to move downward, the elastic force of the first elastic member is overcome, the pressing ring moves upward, and at this time, the first elastic member has a pre-tightening force for driving the pressing ring to move downward.

[0034] In a possible implementation, the end of the pressing rod located in the operation cavity is fixedly connected with a first reset plate, the inner wall of the operation cavity is fixedly connected with a second reset plate, and a second elastic member is fixedly connected between the first reset plate and the second reset plate, and the second elastic member has a pre-tightening force for driving the pressing rod to move upward.

[0035] Compared with the prior art, the roll-to-roll flexible circuit board winding and deviation correcting device has the following advantages:

[0036] The first sensor monitors the edge position of the roll material in real time, and if there is a deviation between the actual position of the edge of the roll material and the preset position, the first sensor transmits a starting signal to the first telescopic member, and after receiving the starting signal, the first telescopic member drives the upper rack to move from the standard position to the actual position, so that the winding part moves from the standard position to the actual position; thus, when winding the roll material, the position of the inflatable shaft can be adjusted according to the position of the roll material, and the movement of the winding part compensates for the deviation of the roll material. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 It is a structural schematic diagram of the roll-to-roll flexible circuit board winding and deviation rectifying device of the embodiment of the present application.

[0038] Figure 2 It is a partial enlarged schematic diagram of part A in the figure. Figure 1

[0039] Figure 3 It is a system guide diagram for realizing the communication connection between the first sensor and the first telescopic member.

[0040] Figure 4 It is a system guide diagram for realizing the communication connection between the second sensor and the pressure controller.

[0041] Figure 5 It is a partial schematic diagram for realizing the movement mode of the upper rack.

[0042] Figure 6 It is a sectional view for realizing the adsorption block and the adsorption fixing mode with the ground and the sealing ring and the abutting mode with the ground.

[0043] Figure 7 It is a partial enlarged schematic diagram of part B in the figure. Figure 6

[0044] BRIEF DESCRIPTION OF DRAWINGS

[0045] 10, winding unit; 101, lower rack; 1011, notch; 1012, sliding seat; 102, upper rack; 1021, guide rail; 1022, connecting member; 1023, guide roller; 1024, support; 103, inflatable shaft; 1031, through slot; 1032, key bar;

[0046] 20, deviation rectifying unit; 201, first telescopic member;

[0047] 30, stabilizing unit; 301, adsorption block; 3011, operation cavity; 3012, ring groove; 3013, sealing ring; 3014, linkage cavity; 3015, second reset plate; 302, piston plate;

[0048] ​​40, power unit; 401, second telescopic member; 402, polished rod; 403, transmission rod; 4031, transmission block; 404, threaded rod; 405, transmission seat; 4051, transmission cavity; 4052, transmission groove; 4053, first reset plate; 406, extrusion ring; 407, extrusion rod; 408, first elastic member;

[0049] 50, guide rod; 501, second elastic member. DETAILED DESCRIPTION

[0050] In order to make the technical problems to be solved by the present application, technical solutions and beneficial effects more clearly, the present application will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application, and are not used to limit the present application.

[0051] Please refer to Figures 1 to 7 The present application is described below. A roll-to-roll flexible circuit board winding and deviation correcting device includes a winding unit 10 and a deviation correcting unit 20. The winding unit 10 has a lower frame 101, an upper frame 102 located above the lower frame 101, a winding part rotatably connected to the upper frame 102, and a driving member in transmission connection with the winding part. The upper frame 102 is slidingly connected to the lower frame 101 in the horizontal direction, and the rotating shaft of the winding part is parallel to the sliding direction of the upper frame 102. The deviation correcting unit 20 has a first telescopic member 201 fixed between the upper frame 102 and the lower frame 101, and a first sensor for monitoring the edge position of the winding material. The movable end of the first telescopic member 201 is fixedly connected to the upper frame 102, and the length of the first telescopic member 201 is adjustable in the horizontal direction. The first telescopic member 201 is in communication connection with the first sensor.

[0052] The first sensor monitors the actual position of the edge position of the winding material in real time, and the first sensor has a preset standard position. When the actual position does not coincide with the standard position, the first telescopic member 201 drives the upper frame 102 to move from the standard position to the actual position.

[0053] Specifically, the top surface of the lower frame 101 is provided with a notch 1011, and the front and rear sides of the notch 1011 are provided with guide rails 1021. Both guide rails 1021 are fixedly connected to the top surface of the lower frame 101. The bottom wall of the upper frame 102 is fixedly provided with a plurality of sliding seats 1012 which are slidingly matched with the guide rails 1021. The first telescopic member 201 is fixedly connected to the lower frame 101, and a connecting member 1022 is fixedly arranged between the first telescopic member 201 and the bottom wall of the upper frame 102 at the notch 1011.

[0054] It should be noted that the first sensor is an ultrasonic sensor, and the first telescopic member 201 can be a telescopic oil cylinder, a hydraulic cylinder or an electric cylinder.

[0055] The winding and correcting device for the roll-to-roll flexible circuit board provided by the embodiment can compared with the prior art:

[0056] The first sensor monitors the edge position of the roll material in real time. If there is a deviation between the actual position of the edge of the roll material and the preset position, the first sensor transmits a starting signal to the first telescopic part 201. After receiving the starting signal, the first telescopic part 201 drives the upper rack 102 to move from the standard position to the actual position, so that the winding part moves from the standard position to the actual position. Thus, when the winding part winds the roll material, the position of the air expansion shaft 103 can be adjusted according to the position of the roll material, and the movement of the winding part compensates for the deviation of the roll material.

[0057] In some embodiments, referring to Figure 1 and Figure 2 , the winding unit 10 further comprises an air expansion shaft 103 and an inflation part. The air expansion shaft 103 forms the winding part. The air expansion shaft 103 is provided with an air cavity. The outer wall of the air expansion shaft 103 is provided with a plurality of through grooves 1031 which are in communication with the air cavity. A key strip 1032 is slidably connected in the through grooves 1031 along the radial direction of the air expansion shaft 103. The inflation part is in communication with the air cavity.

[0058] After the inflation part inflates the air cavity, the gas filled in the air cavity extrudes the key strip 1032 to extend out of the through grooves 1031.

[0059] Specifically, the inflation part can be an air pump.

[0060] After the key strip 1032 is extruded by the gas to extend out of the through grooves 1031, the key strip 1032 abuts against the inner wall of the roll material, so that the roll material and the air expansion shaft 103 do not relatively displace, thereby ensuring the stability during the winding of the roll material.

[0061] In some embodiments, referring to Figure 2 and Figure 4 , the air expansion shaft 103 is provided with a second sensor. The second sensor is used to monitor the weight of the roll material on the air expansion shaft 103. The winding unit 10 further comprises a pressure controller which is in communication connection with the second sensor. The pressure controller is used to adjust the pressure in the air cavity. The greater the weight of the roll material on the air expansion shaft 103, the greater the pressure in the air cavity.

[0062] Specifically, the second sensor is a weight sensor.

[0063] The weight of the roll material increases with the winding progress. After the weight sensor detects the increase of the weight of the roll material, the weight sensor transmits an adjusting signal to the pressure controller, so that more gas enters the air cavity, the pressure in the air cavity is increased, and the abutting force of the key strip 1032 against the roll material is increased. Thus, the stability of the roll material can be ensured when the weight of the roll material is increased.

[0064] In some embodiments, referring to Figure 1The bottom of the upper rack 102 is detachably connected with a guide roller 1023, the guide roller 1023 is axially parallel to the air inflation shaft 103 and is located at the front side of the air inflation shaft 103, a support 1024 horizontally placed is arranged at one side of the guide roller 1023, the support 1024 is fixedly connected with the upper rack 102, and the first sensor is detachably connected with the support 1024.

[0065] Specifically, the air inflation shaft 103 is arranged at the top of the upper rack 102,

[0066] The first sensor is detachable with the support 1024, and the position of the first sensor can be adjusted according to the width of the roll material, so that the application range of the deviation rectifying device is improved.

[0067] The guide roller 1023 is arranged to make the roll material sensed by the first sensor always flat, so that the accuracy of deviation rectification is improved, and if the span of the roll material is too large or slightly uneven, the deviation rectification action will be affected.

[0068] In some embodiments, referring to Figure 1 The roll-to-roll flexible circuit board winding deviation rectifying device further comprises a plurality of stabilizing units 30 arranged at the bottom wall of the lower rack 101, and the stabilizing unit 30 comprises a suction part fixedly connected with the bottom wall of the lower rack 101.

[0069] In some embodiments, referring to Figure 6 The stabilizing unit 30 further comprises a suction block 301 and a piston plate 302, the suction block 301 forms the suction part, and the suction block 301 has an operation cavity 3011; the piston plate 302 is slidably connected in the operation cavity 3011 in the vertical direction.

[0070] The roll-to-roll flexible circuit board winding deviation rectifying device further comprises a power unit 40, and the power unit 40 has a first transmission assembly extending into the operation cavity 3011, and the first transmission assembly is used to drive the piston plate 302 to slide.

[0071] The piston plate 302, the ground and the suction block 301 form a closed space, when the first transmission assembly drives the piston plate 302 to slide upward, the pressure of the closed space is reduced, so that the suction block 301 is adsorbed and fixed with the ground; on the contrary, when the first transmission assembly drives the piston plate 302 to slide downward, the suction block 301 is separated from the ground.

[0072] In some embodiments, referring to Figure 6The first transmission assembly comprises a second telescopic member 401, a transmission roller and a transmission seat 405. The second telescopic member 401 is fixedly arranged on the inner wall of the operation cavity 3011. The transmission seat 405 is fixedly connected to the bottom end of the second telescopic member 401. The transmission seat 405 is provided with a transmission cavity 4051 penetrating from top to bottom. The inner wall of the transmission cavity 4051 is provided with a spiral transmission groove 4052. The transmission roller penetrates through the transmission cavity 4051. The outer wall of the transmission roller is fixedly provided with a transmission block 4031. The transmission roller is screw-connected with the piston plate 302. The outer wall of the transmission roller is fixedly provided with the transmission block 4031 matched with the transmission groove 4052.

[0073] Specifically, the second telescopic member 401 can be a telescopic oil cylinder, an electric cylinder or a hydraulic cylinder.

[0074] The second telescopic member 401 extends downward to drive the transmission seat 405 to move downward. During the downward movement of the transmission seat 405, the transmission block 4031 slides in the transmission groove 4052, so that the transmission roller rotates. Since the transmission roller is screw-connected with the piston plate 302, and the piston plate 302 is slidingly connected in the vertical direction in the operation cavity 3011, the piston plate 302 moves upward at this time. Conversely, when the second telescopic member 401 is retracted upward to drive the transmission seat 405 to move upward, the piston plate 302 moves downward.

[0075] In some embodiments, referring to Figure 6 and Figure 7 The bottom wall of the adsorption block 301 is provided with a ring groove 3012. The ring groove 3012 is arranged at intervals on the outer periphery of the operation cavity 3011. A sealing ring 3013 is slidingly connected in the vertical direction in the ring groove 3012. The power unit 40 further comprises a second transmission assembly. The second transmission assembly is used to drive the sealing ring 3013 to move downward and abut against the ground.

[0076] The second transmission assembly is used to drive the sealing ring 3013 to move downward and abut against the ground, so as to reduce the possibility of a gap existing between the adsorption block 301 and the ground, and improve the airtightness between the adsorption block 301 and the ground.

[0077] In some embodiments, referring to Figure 6 The adsorption block 301 is provided with a linkage cavity 3014 communicated between the ring groove 3012 and the operation cavity 3011. The transmission roller has a light rod 402, a transmission rod 403 and a threaded rod 404 arranged in sequence from top to bottom. The transmission block 4031 is arranged on the transmission rod 403. The threaded rod 404 is screw-connected with the piston plate 302.

[0078] The second transmission assembly comprises a pressing ring 406, a plurality of pressing rods 407 and a first elastic member 408. The pressing ring 406 is arranged on the outer periphery of the transmission seat 405. The pressing rods 407 are arranged in plurality. One end of each of the pressing rods 407 is fixedly connected with the pressing ring 406, and the other end of each of the pressing rods 407 is fixedly connected with the sealing ring 3013 through the linkage cavity 3014. The pressing rods 407 are slidably connected with the adsorption block 301 in the vertical direction. The first elastic member 408 is arranged in plurality and is fixedly arranged between the transmission seat 405 and the pressing ring 406.

[0079] When the second telescopic member 401 is extended downward to drive the transmission seat 405 to move downward, the elastic force of the first elastic member 408 is not overcome, the transmission seat 405 drives the sealing ring 3013 to tightly abut against the ground through the pressing ring 406 and the pressing rods 407, and at the same time, the transmission block 4031 starts to enter the bottom end of the transmission groove 4052. When the second telescopic member 401 is continuously extended to drive the transmission seat 405 to move downward, the elastic force of the first elastic member 408 is overcome, the pressing ring 406 moves upward, and at this time, the first elastic member 408 has the pre-tightening force of the downward movement of the pressing ring 406.

[0080] Specifically, the end of the pressing rod 407 located in the operation cavity 3011 is fixedly provided with a first reset plate 4053, the inner wall of the operation cavity 3011 is fixedly provided with a second reset plate 3015, and the first reset plate 4053 and the second reset plate 3015 are fixedly provided with a second elastic member 501. The second elastic member 501 has a pre-tightening force of upward movement of the pressing rod 407.

[0081] Specifically, the top surface of the first reset plate 4053 is fixedly provided with a guide rod 50, the guide rod 50 is arranged in the vertical direction, the top end of the guide rod 50 penetrates through the second reset plate 3015 and is slidably connected with the second reset plate 3015, and the second elastic member 501 is spirally arranged on the outer periphery of the guide rod 50.

[0082] It should be noted that the first elastic member 408 is a telescopic rod with a spring, the telescopic rod has a multi-stage telescopic structure, and the second elastic member 501 is a spring.

[0083] The second telescopic part 401 extends downward to drive the transmission seat 405 to move downward. The transmission seat 405 first moves downward along the light pole 402. In the process that the transmission seat 405 moves downward along the light pole 402, the elastic force of the first elastic part 408 is not overcome, and there is no relative movement between the extrusion rod 407 and the fixed ring, so that the extrusion rod 407 drives the sealing ring 3013 to move downward and tightly abut against the ground. After the sealing ring 3013 tightly abuts against the ground, the transmission seat 405 begins to move downward along the transmission rod 403. At this time, the transmission block 4031 begins to enter the bottom end of the transmission groove 4052. The second telescopic part 401 continues to extend downward to continue to drive the transmission seat 405 to move downward. In the process that the transmission seat 405 moves downward along the transmission rod 403, the elastic force of the first elastic part 408 is overcome, the extrusion rod 407 moves upward relative to the fixed ring, the sealing ring 3013 continuously abuts against the ground, and at the same time, the transmission block 4031 slides along the transmission groove 4052 to drive the transmission roller to rotate, so that the threaded rod 404 rotates to drive the piston plate 302 to move upward.

[0084] The second telescopic part 401 retracts upward to drive the transmission seat 405 to move upward. The transmission seat 405 first moves upward along the transmission rod 403. In the process that the transmission seat 405 moves upward along the transmission rod 403, the first elastic part 408 releases the elastic force to drive the extrusion ring 406 to move downward until reset. At the same time, the transmission block 4031 slides along the transmission groove 4052 to drive the transmission roller to rotate, so that the threaded rod 404 rotates to drive the piston plate 302 to move downward until reset. After the piston plate 302 is reset, the transmission seat 405 begins to move upward along the light pole 402. At this time, the transmission block 4031 is separated from the top end of the transmission groove 4052. The second telescopic part 401 continues to retract upward to continue to drive the transmission seat 405 to move upward. In the process that the transmission seat 405 moves upward along the light pole 402, the second elastic part 501 releases the elastic force to drive the extrusion rod 407 to move upward, so that the extrusion rod 407 drives the sealing ring 3013 to move upward until it is separated from the ground.

[0085] The above only describes the preferred embodiments of the present application and is not used to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A roll-to-roll flexible circuit board winding and deviation correcting device, characterized in that, The application relates to a roll-to-roll flexible circuit board winding and deviation rectifying device. The roll-to-roll flexible circuit board winding and deviation rectifying device comprises a winding unit, a deviation rectifying unit, a plurality of stabilizing units and a power unit. The winding unit comprises a lower frame, an upper frame arranged above the lower frame, a winding part rotatably connected to the upper frame and a driving part in transmission connection with the winding part. The upper frame is in sliding connection with the lower frame in the horizontal direction. The rotating shaft of the winding part is parallel to the sliding direction of the upper frame. The deviation rectifying unit comprises a first telescopic part fixed between the upper frame and the lower frame, a first sensor for monitoring the position of the winding material edge and a first telescopic part in communication connection with the first sensor. The active end of the first telescopic part is fixedly connected with the upper frame. The first telescopic part is adjustable in length in the horizontal direction. When the actual position of the winding material edge monitored by the first sensor is not coincident with the standard position, the first telescopic part drives the upper frame to move from the standard position to the actual position. The plurality of stabilizing units are arranged on the bottom wall of the lower frame. The stabilizing unit comprises an adsorption block, an adsorption part formed by the adsorption block and an operation cavity in the adsorption block. The bottom wall of the adsorption block is provided with a ring groove. The ring groove is arranged outside the operation cavity in the vertical direction. The ring groove is in sliding connection with a sealing ring in the vertical direction.

2. The roll-to-roll flexible circuit board winding and correcting device of claim 1, wherein, The power unit comprises a second transmission assembly. The second transmission assembly is used for driving the sealing ring to move downward and abut against the ground. The stabilizing unit further comprises a piston plate in sliding connection with the operation cavity in the vertical direction. The roll-to-roll flexible circuit board winding and deviation rectifying device further comprises a power unit.

3. The roll-to-roll flexible circuit board winding and correcting device of claim 2, wherein, The power unit has a first transmission assembly extending into the operation cavity. The first transmission assembly is used for driving the piston plate to slide. The first transmission assembly comprises a second telescopic part fixedly arranged on the inner wall of the operation cavity and a transmission seat fixedly connected to the bottom end of the second telescopic part. The transmission seat is provided with a transmission cavity penetrating through the upper and lower parts. The inner wall of the transmission cavity is provided with a helical transmission groove. A transmission roller penetrates through the transmission cavity. The outer wall of the transmission roller is fixedly provided with a transmission block. The transmission roller is in screw connection with the piston plate. The outer wall of the transmission roller is fixedly provided with a transmission block matched with the transmission groove. The winding unit further comprises an air expansion shaft forming the winding part. The air expansion shaft is provided with an air cavity. The outer wall of the air expansion shaft is provided with a plurality of through grooves in communication with the air cavity. The through grooves are in sliding connection with a key strip in the radial direction of the air expansion shaft. An inflation part is in communication with the air cavity. When the inflation part is inflated into the air cavity, the gas in the air cavity extrudes the key strip to extend out of the through groove. A second sensor is arranged on the air expansion shaft. The second sensor is used for monitoring the weight of the winding material on the air expansion shaft. The winding unit further comprises a pressure controller in communication connection with the second sensor. The pressure controller is used for adjusting the pressure in the air cavity. The greater the weight of the winding material on the air expansion shaft, the greater the pressure in the air cavity.

4. The roll-to-roll flexible circuit board winding and correcting device of claim 2, wherein, The bottom of the upper rack is detachably connected with a guide roller, the guide roller is axially parallel to the gas expansion shaft and is located at the front side of the gas expansion shaft, a support horizontally placed is arranged at one side of the guide roller, the support is fixedly connected with the upper rack, and the first sensor is detachably connected with the support.

5. The roll-to-roll flexible circuit board winding and correcting device of claim 1, wherein, The adsorption block is provided with a linkage cavity communicated between the ring groove and the operation cavity, the transmission roller has an optical rod, a transmission rod and a threaded rod arranged in sequence from top to bottom, the transmission block is arranged on the transmission rod, and the threaded rod is screwed with the piston plate; The second transmission assembly comprises: A pressing ring is arranged on the outer periphery of the transmission seat; A plurality of pressing rods are arranged, one end of each of the pressing rods is fixedly connected with the pressing ring, the other end of each of the pressing rods penetrates through the linkage cavity and is fixedly connected with the sealing ring, and each of the pressing rods is slidably connected with the adsorption block in the vertical direction; A plurality of first elastic members are arranged and fixed between the transmission seat and the pressing ring; When the second telescopic member is extended downward to drive the transmission seat to move downward, the elastic force of the first elastic member is not overcome, the transmission seat drives the sealing ring to abut against the ground through the pressing ring and the pressing rod, and meanwhile the transmission block starts to enter the bottom end of the transmission groove; when the second telescopic member is continuously extended to drive the transmission seat to move downward, the elastic force of the first elastic member is overcome, the pressing ring moves upward, and the first elastic member has a pre-tightening force for driving the pressing ring to move downward.

6. The roll-to-roll flexible circuit board winding and correction device of claim 5, wherein, The end of the pressing rod located in the operation cavity is fixedly connected with a first reset plate, the inner wall of the operation cavity is fixedly connected with a second reset plate, and a second elastic member is arranged between the first reset plate and the second reset plate, and the second elastic member has a pre-tightening force for driving the pressing rod to move upward.

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