Double-reel automatic reel changing device for carbon filament winding machine

Abstract

The invention discloses a double-reel automatic reel changing device for a carbon filament winding machine. The double-reel automatic reel changing device comprises a first reel assembly, a second reel assembly, a turret roller assembly and a control unit. The actions of the first reel assembly, the second reel assembly and the turret roller assembly are intelligently coordinated through the control unit, automatic switching and continuous winding of double reel stations are achieved, the tensioning and loosening states of the two air expansion shafts are alternately controlled through the valve body, when one air expansion shaft is located at the winding station, the other air expansion shaft is located at the loading and unloading station, and when reels are replaced, automatic switching and continuous winding are achieved. A third motor drives the turret roller to rotate, and a proximity switch and an induction sheet are matched to realize accurate positioning, so that the accumulative error of an electric control system is effectively eliminated, and the consistency of stations after roll replacement each time is ensured; the winding defects of edge collapse, shoulder protruding and the like are effectively prevented, and the forming quality and the product yield of carbon fiber winding are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of carbon fiber production technology, specifically to an automatic double-spindle winding device for a carbon fiber winding machine. Background Technology

[0002] In carbon fiber production, continuous winding of carbon fiber tow is a crucial step in ensuring both production capacity and quality. However, traditional winding operations heavily rely on manual methods for changing rolls. This approach has several inherent drawbacks: First, the roll-changing process requires operators to be proficient in tedious procedures and manually handle heavy rolls, resulting in high labor intensity, low efficiency, and significant safety hazards such as accidental roll detachment causing personal injury. Second, manual roll changing leads to prolonged downtime, wasting tow material; furthermore, manual placement of new rolls is prone to positioning errors, causing forming defects such as "collapsed edges" and "bulging shoulders" during the winding process, severely affecting the final product's roll shape quality and consistency, and lowering the overall yield rate.

[0003] With the rapid development of intelligent manufacturing technology, downstream applications are placing extremely stringent demands on the consistency of carbon fiber product quality and the continuity of production. Against this backdrop, achieving efficient, precise, and safe automated roll changing has become a core requirement for improving the technological level of carbon fiber production equipment. Currently, some automation solutions may be structurally complex and costly to manufacture, making large-scale application difficult.

[0004] Therefore, there is an urgent need for an automatic roll-changing device with a reasonable structure, high reliability, and controllable cost to solve the above pain points and promote the upgrading of the carbon fiber industry. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to address the shortcomings of the prior art by providing a dual-shaft automatic roll changing device for carbon wire winding machines that is compact in structure, highly efficient in roll changing, provides stable winding quality, and helps to reduce overall costs.

[0006] The technical problem to be solved by the present invention is achieved through the following technical solution: a dual-shaft automatic winding device for a carbon wire winding machine, comprising a first shaft assembly, a second shaft assembly, a turret roller assembly, and a control unit; The first reel assembly includes a first air shaft, a first pulley, a first belt, a second pulley, a bearing, a first central shaft, a second belt, a third pulley, and a first motor; the power output end of the first motor is coaxially and fixedly connected to the third pulley; the first pulley is fixed to one end of the first air shaft; the second pulley consists of a small pulley and a large pulley coaxially and fixedly connected, and the inner circumferential surface of the second pulley is rotatably mounted on the outer circumferential surface of one end of the first central shaft through the bearing; the third pulley is driven by the large pulley of the second pulley through the second belt, and the small pulley of the second pulley is driven by the first belt and the first pulley; The second reel assembly includes a second air shaft, a fourth pulley, a third belt, a fifth pulley, a sixth pulley, a second central shaft, a fourth belt, a seventh pulley, and a second motor. The power output end of the second motor is coaxially and fixedly connected to the seventh pulley. The sixth pulley is fixed to the outer circumferential surface of one end of the second central shaft, and the fifth pulley is fixed to the outer circumferential surface of the middle part of the second central shaft. The fourth pulley is fixed to the outer circumferential surface of one end of the second air shaft. The seventh pulley is driven by the fourth belt and the sixth pulley, and the outer circumferential surface of the middle part of the fifth pulley is driven by the third belt and the fourth pulley. The turret roller assembly includes a turret roller, a fifth belt, an eighth pulley, a third motor, a proximity switch, and a sensing element that works in conjunction with the proximity switch; the power output end of the third motor is coaxially and fixedly connected to the eighth pulley; the middle parts of the first and second air shafts are rotatably mounted on the turret roller; the eighth pulley is connected to the outer circumferential surface of the turret roller via the fifth belt; the sensing element is fixed to the outer wall of the turret roller; and the proximity switch is located on the side of the turret roller. The control unit includes a controller and a valve body; the controller is electrically connected to the valve body, a first motor, a second motor, a third motor, and a proximity switch; the valve body is configured to be controlled by the controller to alternately supply and cut off compressed air to the first and second air shafts, such that when one air shaft is in a tensioned working state, the other is in a relaxed state.

[0007] The technical problem to be solved by the present invention can also be achieved by the following technical solution: the automatic double-shaft changing device for a carbon wire winding machine described above, wherein the valve body is a reversing valve with one inlet and two outlets, and the two outlets are respectively connected to the air inlet ends of the first air shaft and the second air shaft, thereby selectively controlling the air intake and exhaust of the first air shaft and the second air shaft.

[0008] The technical problem to be solved by the present invention can also be achieved by the following technical solution: the automatic double-shaft changing device for a carbon wire winding machine described above, wherein the valve body is embedded in the outer wall of the turret drum.

[0009] The technical problem to be solved by the present invention can also be achieved through the following technical solution: In the above-described automatic double-shaft changing device for a carbon wire winding machine, the axes of the first air expansion shaft, the second air expansion shaft, the first central shaft, the third pulley, the power output end of the first motor, the fourth pulley, the fifth pulley, the sixth pulley, the seventh pulley, the power output end of the second motor, the turret roller, the eighth pulley, and the power output end of the third motor are parallel to each other.

[0010] The technical problem to be solved by the present invention can also be achieved through the following technical solution: the automatic double-shaft changing device for a carbon wire winding machine described above, wherein the bearing is a deep groove ball bearing.

[0011] Compared with the prior art, the beneficial technical effects of the present invention are: (1) By coordinating the actions of the first reel assembly, the second reel assembly and the turret roller assembly through the control unit, automatic switching and continuous winding between the two reels are realized. The reel changing process does not require manual intervention, which completely eliminates the downtime caused by traditional manual reel changing, improves equipment utilization and production efficiency, and reduces material waste caused by downtime. At the same time, it replaces cumbersome manual operation with automated operation, avoids the risk of operators carrying heavy reels, greatly reduces labor intensity, and fundamentally eliminates safety hazards such as reel falling off, ensuring production safety.

[0012] (2) The rotation angle of the turret roller is accurately positioned by using proximity switches and induction plates. Combined with the control of the tension state of the air shaft by the controller, the positioning of the new roll is accurate and the winding process is stable. The proximity switches and induction plates are used for physical zeroing to eliminate the accumulated error of the electrical control system. This ensures that the position of the turret roller remains highly consistent after each roll change, effectively preventing common roll defects such as "collapsed edge" and "protruding shoulder" that are common in manual roll changes. This improves the forming quality of carbon fiber winding and helps to increase the yield rate.

[0013] (3) The multi-stage transmission system consisting of pulleys and belts is adopted, and the valve body is integrated on the turret drum, which simplifies the air circuit structure. The overall device has a simple structure, low manufacturing cost, and is easy to maintain, making it suitable for large-scale application in carbon fiber production. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the assembled three-dimensional structure of the present invention; Figure 2 This is a three-dimensional structural schematic diagram of the first reel assembly of the present invention; Figure 3 This is a three-dimensional structural schematic diagram of the second pulley of the present invention; Figure 4 This is a three-dimensional structural schematic diagram of the second reel assembly of the present invention; Figure 5 This is a three-dimensional structural diagram of the turret roller assembly of the present invention.

[0015] Reference numerals in the attached diagram: 1. First air shaft; 2. First pulley; 3. First belt; 4. Second pulley; 5. Bearing; 6. First central shaft; 7. Second belt; 8. Third pulley; 9. First motor; 10. Second air shaft; 11. Fourth pulley; 12. Third belt; 13. Fifth pulley; 14. Sixth pulley; 15. Fourth belt; 16. Seventh pulley; 17. Second motor; 18. Turret roller; 19. Fifth belt; 20. Eighth pulley; 21. Third motor; 22. Proximity switch; 23. Induction plate; 24. Controller. Detailed Implementation

[0016] The specific technical solutions of the present invention will be further described below with reference to the accompanying drawings, so as to enable those skilled in the art to further understand the present invention, without constituting a limitation on its rights.

[0017] Example 1, referring to Figure 1-5 An automatic double-spindle winding device for a carbon wire winding machine includes a first spindle assembly, a second spindle assembly, a turret roller assembly, and a control unit; The first reel assembly includes a first air shaft 1, a first pulley 2, a first belt 3, a second pulley 4, a bearing 5, a first central shaft 6, a second belt 7, a third pulley 8, and a first motor 9; the power output end of the first motor 9 is coaxially and fixedly connected to the third pulley 8; the first pulley 2 is fixed to one end of the first air shaft 1; the second pulley 4 is composed of a small pulley and a large pulley coaxially and fixedly connected, and the inner circumferential surface of the second pulley 4 is rotatably mounted on the outer circumferential surface of one end of the first central shaft 6 through the bearing 5, which is a deep groove ball bearing 5; the third pulley 8 is driven by the large pulley of the second pulley 4 through the second belt 7, and the small pulley of the second pulley 4 is driven by the first belt 3 and the first pulley 2; The second reel assembly includes a second air shaft 10, a fourth pulley 11, a third belt 12, a fifth pulley 13, a sixth pulley 14, a second central shaft, a fourth belt 15, a seventh pulley 16, and a second motor 17. The power output end of the second motor 17 is coaxially and fixedly connected to the seventh pulley 16. The sixth pulley 14 is fixed to the outer circumferential surface of one end of the second central shaft, and the fifth pulley 13 is fixed to the outer circumferential surface of the middle part of the second central shaft. The fourth pulley 11 is fixed to the outer circumferential surface of one end of the second air shaft 10. The seventh pulley 16 is driven by the sixth pulley 14 through the fourth belt 15, and the outer circumferential surface of the middle part of the fifth pulley 13 is driven by the fourth pulley 11 through the third belt 12. The turret roller assembly includes a turret roller 18, a fifth belt 19, an eighth pulley 20, a third motor 21, a proximity switch 22, and a sensing element 23 that works in conjunction with the proximity switch 22. The power output end of the third motor 21 is coaxially and fixedly connected to the eighth pulley 20. The middle parts of the first air shaft 1 and the second air shaft 10 are rotatably mounted on the turret roller 18, and this rotatable mounting method can be bearing mounting. The eighth pulley 20 is connected to the outer circumferential surface of the turret roller 18 via the fifth belt 19. The sensing element 23 is fixed on the outer wall of the turret roller 18, and the proximity switch 22 is located on the side of the turret roller 18. The control unit includes a controller 24 and a valve body; the controller 24 is electrically connected to the valve body, the first motor 9, the second motor 17, the third motor 21 and the proximity switch 22 respectively; the valve body is configured to be controlled by the controller 24 to alternately supply and cut off compressed air to the first air shaft 1 and the second air shaft 10, so that when one air shaft is in a tightened working state, the other is in a relaxed state. The valve body is a reversing valve with one inlet and two outlets. The two outlets are respectively connected to the air inlet of the first air shaft 1 and the second air shaft 10, thereby selectively controlling the air intake and exhaust of the first air shaft 1 and the second air shaft 10. The valve body is embedded in the outer wall of the turret drum 18.

[0018] In Example 1, in actual production, the first reel assembly, the second reel assembly, the turret roller assembly, and the control unit can be placed on the frame.

[0019] Example 2: In the carbon wire winding machine automatic double-shaft changing device described in Example 1, the axes of the first air shaft 1, the second air shaft 10, the first central shaft 6, the third pulley 8, the power output end of the first motor 9, the fourth pulley 11, the fifth pulley 13, the sixth pulley 14, the seventh pulley 16, the power output end of the second motor 17, the turret roller 18, the eighth pulley 20, and the power output end of the third motor 21 are parallel to each other.

[0020] The operating principle of the dual-spindle automatic winding device for the carbon wire winding machine in Examples 1-2 is as follows: (1) First spool winding state: The control unit first controls the valve body to supply external compressed air to the first air shaft 1, which is in a tensile state to fix the spindle. At the same time, the compressed air to the second air shaft 10 is cut off, and the second air shaft 10 is in a relaxed state to prepare for empty roll.

[0021] The controller 24 starts the first motor 9 to rotate, while keeping the second motor 17 and the third motor 21 stopped. The power of the first motor 9 is transmitted to the large pulley of the second pulley 4 through the third pulley 8 and the second belt 7. The small pulley of the second pulley 4 then drives the first pulley 2 through the first belt 3, thereby driving the first air shaft 1 to rotate. The carbon filament or yarn spindle is then wound around the yarn spindle of the first air shaft 1. During this process, the turret roller assembly remains stationary and the proximity switch 22 is not triggered.

[0022] (2) The process of changing the film: When the first reel is wound, for example, reaching a preset length or time, the controller 24 controls the third motor 21 to start, driving the turret drum 18 to rotate through the eighth pulley 20 and the fifth belt 19. The turret drum 18 drives the first air shaft 1 and the second air shaft 10 to rotate synchronously, moving the first reel from the winding position to the unwinding position, and the second reel from the standby position to the winding position. At the same time, the controller 24 keeps the first motor 9 and the second motor 17 rotating to ensure a smooth transition. When the turret drum 18 rotates, the sensing plate 23 fixed on its outer wall moves accordingly. When the sensing plate 23 approaches the proximity switch 22, the proximity switch 22 generates an electrical signal and sends it to the controller 24. The controller 24 then precisely controls the third motor 21 to stop, positioning the turret drum 18 at the rewinding position, i.e., the first reel reaches the unwinding point and the second reel reaches the winding point. At this time, the controller 24 immediately controls the valve body to switch directions, the valve body cuts off the compressed air of the first air expansion shaft 1 to loosen it, making it easier to unload the full roll of yarn, and at the same time supplies compressed air to the second air expansion shaft 10 to tighten it, preparing for winding. Then the controller 24 stops the first motor 9 and starts the second motor 17 to enter the working state, and the roll changing process is completed.

[0023] (3) The winding state of the second reel: The control unit maintains the valve body state, keeping the second air shaft 10 taut and the first air shaft 1 slack. The controller 24 starts the second motor 17 to rotate, while keeping the first motor 9 and the third motor 21 stopped. The power of the second motor 17 is transmitted to the sixth pulley 14 through the seventh pulley 16 and the fourth belt 15. The sixth pulley 14 drives the second central shaft to rotate. The fifth pulley 13, which is fixed on the second central shaft, drives the fourth pulley 11 through the third belt 12, thereby driving the second air shaft 10 to rotate. The carbon fiber or yarn spindle begins to wind onto the second air shaft 10. During this process, the turret roller assembly remains stationary until the next roll change is triggered.

Claims

1. A dual-spindle automatic winding device for a carbon wire winding machine, characterized in that: It includes a first reel assembly, a second reel assembly, a turret drum assembly, and a control unit; The first reel assembly includes a first air shaft, a first pulley, a first belt, a second pulley, a bearing, a first central shaft, a second belt, a third pulley, and a first motor; the power output end of the first motor is coaxially and fixedly connected to the third pulley; the first pulley is fixed to one end of the first air shaft; the second pulley consists of a small pulley and a large pulley coaxially and fixedly connected, and the inner circumferential surface of the second pulley is rotatably mounted on the outer circumferential surface of one end of the first central shaft through the bearing; the third pulley is driven by the large pulley of the second pulley through the second belt, and the small pulley of the second pulley is driven by the first belt and the first pulley; The second reel assembly includes a second air shaft, a fourth pulley, a third belt, a fifth pulley, a sixth pulley, a second central shaft, a fourth belt, a seventh pulley, and a second motor. The power output end of the second motor is coaxially and fixedly connected to the seventh pulley. The sixth pulley is fixed to the outer circumferential surface of one end of the second central shaft, and the fifth pulley is fixed to the outer circumferential surface of the middle part of the second central shaft. The fourth pulley is fixed to the outer circumferential surface of one end of the second air shaft. The seventh pulley is driven by the fourth belt and the sixth pulley, and the outer circumferential surface of the middle part of the fifth pulley is driven by the third belt and the fourth pulley. The turret roller assembly includes a turret roller, a fifth belt, an eighth pulley, a third motor, a proximity switch, and a sensing element that works in conjunction with the proximity switch; the power output end of the third motor is coaxially and fixedly connected to the eighth pulley; the middle parts of the first and second air shafts are rotatably mounted on the turret roller; the eighth pulley is connected to the outer circumferential surface of the turret roller via the fifth belt; the sensing element is fixed on the outer wall of the turret roller; and the proximity switch is located on the side of the turret roller. The control unit includes a controller and a valve body; the controller is electrically connected to the valve body, a first motor, a second motor, a third motor, and a proximity switch; the valve body is configured to be controlled by the controller to alternately supply and cut off compressed air to the first and second air shafts, such that when one air shaft is in a tensioned working state, the other is in a relaxed state.

2. The automatic double-spindle changing device for a carbon wire winding machine according to claim 1, characterized in that: The valve body is a reversing valve with one inlet and two outlets. The two outlets are respectively connected to the air inlet ends of the first air shaft and the second air shaft, thereby selectively controlling the air intake and exhaust of the first air shaft and the second air shaft.

3. The automatic double-spindle changing device for a carbon wire winding machine according to claim 1, characterized in that: The valve body is embedded in the outer wall of the turret drum.

4. The automatic double-spindle winding device for a carbon wire winding machine according to claim 1, characterized in that: The axes of the first air shaft, the second air shaft, the first central shaft, the third pulley, the power output end of the first motor, the fourth pulley, the fifth pulley, the sixth pulley, the seventh pulley, the power output end of the second motor, the turret drum, the eighth pulley, and the power output end of the third motor are all parallel to each other.

5. The automatic double-spindle winding device for a carbon wire winding machine according to claim 1, characterized in that: The bearing in question is a deep groove ball bearing.

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