Novel nickel-titanium alloy wire winding device

Abstract

The invention belongs to the technical field of alloy processing, and discloses a novel nickel-titanium alloy wire winding device which comprises a mounting seat, and further comprises a winding tension control unit arranged on the outer side wall of the mounting seat and two clamping winding units symmetrically arranged on the inner walls of the two sides of the mounting seat. The winding tension control unit is in transmission connection with one clamping and winding unit, the thickness of the wire is detected through a microswitch, an electric push rod is triggered to adjust the coupling state of a first vortex wheel and a second vortex wheel, self-adaptive winding tension control is achieved, and the wire is prevented from being damaged. The arc-shaped baffle rotates to alternately block the transmission pipe and drives the air cylinders on the two sides to drive the biconical blocks to periodically stretch out and draw back, uniform wire arrangement is achieved, an additional wire arrangement device is not needed, and cost is reduced. A pressure difference buffer structure is formed through the aperture difference of an air inlet hole and an air outlet hole of the air cylinder, air pressure balance type clamping is achieved, and the core shaft made of fragile materials such as ceramics and glass is effectively protected.

Description

Technical Field

[0001] The present invention belongs to the technical field of alloy processing, and particularly relates to a novel wire winding device for nickel-titanium alloy wires. Background Art

[0002] Due to its shape memory effect, superelasticity and good biocompatibility, nickel-titanium alloy is widely used in medical devices, aerospace, electronic equipment and other fields. In the production process of nickel-titanium alloy wires, the wire winding device, as a key equipment, directly affects the production quality and efficiency of the wires. At present, the existing wire winding devices for nickel-titanium alloy wires have the following problems to be improved:

[0003] 1. Traditional wire winding equipment usually adopts a fixed winding tension or relies on a complex sensor feedback system and a variable-frequency motor to adjust the tension. When facing nickel-titanium alloy wires of different thicknesses, the fixed tension mode will cause the thin wires to break due to excessive tension during winding, while the thick wires will result in low winding efficiency due to insufficient tension; although the sensor and the variable-frequency motor control system can achieve tension adjustment, they are costly, have poor system stability and are difficult to maintain;

[0004] 2. Existing wire winding devices often realize the clamping and wire arranging functions separately, and an additional independent wire arranging device needs to be configured, which not only increases the structural complexity of the equipment, resulting in an increase in equipment cost, but also the existence of multiple transmission components will introduce more wear and failure points, reducing the reliability and service life of the equipment;

[0005] 3. The traditional rigid clamping method is very likely to cause deformation or even damage to the reel made of brittle materials such as ceramics and glass when clamping the reel.

[0006] Therefore, a novel wire winding device for nickel-titanium alloy wires that can adaptively adjust the winding tension, integrate the wire arranging and clamping functions and can protect the reel is needed to solve the above problems. Summary of the Invention

[0007] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a novel wire winding device for nickel-titanium alloy wires. The thickness of the wire is detected by a microswitch, and the electric push rod is triggered to adjust the coupling state of the first eddy current wheel and the second eddy current wheel, so as to realize adaptive winding tension control and avoid wire damage; the arc-shaped baffle rotates to alternately block the transmission pipe, and the two-side cylinders are driven to drive the double-cone blocks to expand and contract periodically, so as to realize uniform wire arranging without an additional wire arranging device, reducing the cost; a differential pressure buffer structure is formed by the aperture difference between the air inlet hole and the air outlet hole of the cylinder to realize air pressure balance clamping, effectively protecting the mandrels made of brittle materials such as ceramics and glass.

[0008] The technical solution adopted by the present invention is as follows: a new type of nickel-titanium alloy wire winding device, including a mounting seat, and also including a winding tension control unit arranged on the outer side wall of the mounting seat and a clamping winding unit symmetrically arranged on the inner walls on both sides of the mounting seat, the clamping winding unit is provided with two groups, the winding tension control unit is transmission connected with one group of the clamping winding units, an exchange transmission box is fixedly provided on the outer wall of the bottom of the mounting seat, the exchange transmission box is connected with the clamping winding unit pipeline, a detection trigger box is fixedly provided on the inner wall of the bottom of the mounting seat, a telescopic cylinder is vertically fixed on the inner wall of the bottom of the detection trigger box, a micro switch is provided on the upper end of the telescopic cylinder, and the micro switch is electrically controlled and connected with the winding tension control unit.

[0009] As a preferred technical solution of the present scheme, an arc-shaped baffle is rotatably provided inside the exchange transmission box, a transmission tube is fixedly provided through the bottom wall of the mounting seat, one end of the transmission tube is through-connected with the exchange transmission box, the arc-shaped side wall of the arc-shaped baffle is in close-fitting and movable contact with the inner wall of the exchange transmission box, a reducer is fixedly provided on the outer wall of the bottom of the exchange transmission box, the reducer is coaxially connected to the central axis of the arc-shaped baffle, an air pump is fixedly provided on the outer wall of the reducer, the built-in motor of the air pump is transmission-connected to the reducer, and the air outlet end of the air pump is through-connected with the inside of the exchange transmission box.

[0010] As a preferred technical solution of this scheme, a top plate is fixedly provided horizontally on the inner wall of the detection trigger box, a pressure column is provided on the lower side of the top plate, a guide wheel is symmetrically rotated on the outer edge of the top of the detection trigger box, and the micro switch is located directly below the pressure column.

[0011] As a preferred technical solution of the present scheme, the winding tension control unit includes a mounting frame fixedly arranged on the outer wall of the mounting seat, an electric push rod rotatably arranged on the inner wall of the mounting frame, a vortex wheel 2 fixedly arranged at the output end of the electric push rod, a coupling box fixedly arranged on the outer wall of the mounting seat, and a vortex wheel 1 rotatably arranged on the other side wall of the coupling box, the vortex wheel 2 is located in the coupling box, the output end of the electric push rod passes through and is movably arranged on the side wall of the coupling box, the vortex wheel 1 corresponds to the vortex wheel 2, the coupling box is filled with transmission oil, the micro switch is electrically controlled and connected to the electric push rod, a motor is fixedly arranged on the outer wall of the mounting frame, and the output end of the motor is coaxially connected to the base end of the electric push rod.

[0012] As a preferred technical solution of the present scheme, the clamping and winding unit includes a collecting box fixedly arranged on the inner wall of the mounting base, a cylinder rotatably arranged on one side wall of the collecting box, and a conical block fixedly arranged on the output end of the cylinder. The output end of the cylinder is provided with an air outlet, and the base end of the cylinder is provided with an air inlet. The air inlet is located in the collecting box, and the aperture of the air inlet is larger than the aperture of the air outlet. The other end of the transmission pipe is connected with the interior of the collecting box, and the cylinder on one side is coaxially connected with the vortex wheel.

[0013] As a preferred technical solution of this scheme, when the electric push rod reaches the maximum stroke, the vortex wheel 2 is meshed with the vortex wheel 1.

[0014] After adopting the above structure, the beneficial effects of the present invention are as follows:

[0015] (1) Adaptive winding tension control to avoid wire damage: The thickness of the nickel-titanium alloy wire is detected by a micro switch, and the electric push rod is triggered to adjust the coupling state of the eddy current wheel 1 and the eddy current wheel 2. This solves the problem that traditional winding equipment cannot dynamically adjust the winding tension according to the wire diameter, resulting in easy breakage of thin wires and low efficiency of thick wires. It overcomes the technical prejudice commonly believed by technicians in this field that winding wires of different thicknesses must rely on complex sensor feedback systems and variable frequency motors;

[0016] (2) Double conical blocks are clamped alternately to achieve uniform wire arrangement: The arc-shaped baffle is rotated to alternately block the transmission tube, so that the cylinders on both sides can expand and contract periodically, driving the conical blocks to achieve reciprocating translation of the reel. The existing winding device needs to be equipped with an additional wire arrangement device, which effectively reduces the cost and overcomes the traditional perception that uniform wire arrangement must rely on an independent lateral movement mechanism. This solution integrates the clamping and wire arrangement functions by controlling the synchronous movement of the conical blocks through air pressure, breaking through the limitation of structural complexity;

[0017] (3) Air pressure balanced clamping to protect the reel: The diameter of the cylinder air inlet hole is larger than the air outlet hole, forming a pressure difference buffer structure. When the conical block contacts the reel, the air pressure difference makes the cylinder elastic, avoiding rigid clamping that may cause deformation of the reel, especially causing irreversible damage to the mandrel of brittle materials such as ceramics and glass. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present solution and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention.

[0019] Figure 1 This is a schematic diagram of the overall structure of a novel nickel-titanium alloy wire winding device proposed by the present invention;

[0020] Figure 2 A schematic diagram of the internal structure of a novel nickel-titanium alloy wire winding device proposed by the present invention;

[0021] Figure 3 This is a cross-sectional view of the internal structure of the detection trigger box proposed by the present invention;

[0022] Figure 4 This is a cross-sectional view of the arc-shaped baffle structure proposed by the present invention;

[0023] Figure 5 This is a schematic diagram of the overall structure of the clamping and winding unit proposed by the present invention;

[0024] Figure 6 This is a schematic diagram of the overall structure of the winding tension control unit proposed by the present invention;

[0025] Figure 7 This is a cross-sectional view of the overall structure of the second embodiment in the present invention.

[0026] In the drawings: 1. Mounting seat; 2. Coupling box; 3. Detection trigger box; 4. Exchange and transmission box; 5. Transmission pipe; 6. Arc-shaped baffle; 7. Air pump; 8. Collection box; 9. Cylinder; 10. Conical block; 11. Eddy current wheel one; 12. Eddy current wheel two; 13. Electric push rod; 14. Motor; 15. Mounting frame; 16. Top plate; 17. Pressure column; 18. Microswitch; 19. Guide wheel; 20. Telescopic cylinder; 21. Clamping and winding unit; 22. Winding tension control unit; 23. Reducer; 24. Support leg; 25. Reciprocating electric push rod; 26. Air outlet; 27. Air inlet. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0029] Embodiment 1: As Figures 1-6As shown, a novel nickel-titanium alloy wire winding device comprises a mounting seat 1, a supporting leg 24 is fixedly arranged on the outer wall of the bottom of the mounting seat 1, a winding tension control unit 22 is arranged on the outer wall of the mounting seat 1, and a clamping winding unit 21 is symmetrically arranged on the inner walls of both sides of the mounting seat 1, and the clamping winding unit 21 is provided with two groups, an exchange transmission box 4 is fixedly arranged on the outer wall of the bottom of the mounting seat 1, a detection trigger box 3 is fixedly arranged on the inner wall of the bottom of the mounting seat 1, a telescopic cylinder 20 is vertically fixedly arranged on the inner wall of the bottom of the detection trigger box 3, a micro switch 18 is arranged on the upper end of the telescopic cylinder 20, an arc baffle 6 is rotatably arranged in the exchange transmission box 4, and a transmission is fixedly arranged on the bottom wall of the mounting seat 1 Tube 5, one end of the transmission tube 5 is connected with the exchange transmission box 4, the arc side wall of the arc baffle 6 is in close contact with the inner wall of the exchange transmission box 4, a reducer 23 is fixed on the outer wall of the bottom of the exchange transmission box 4, the reducer 23 is coaxially connected with the central axis of the arc baffle 6, an air pump 7 is fixed on the outer wall of the reducer 23, the built-in motor of the air pump 7 is connected with the reducer 23, the air outlet end of the air pump 7 is connected with the inside of the exchange transmission box 4, a top plate 16 is fixedly arranged on the inner wall of the detection trigger box 3, a pressure column 17 is arranged on the lower side of the top plate 16, a guide wheel 19 is symmetrically rotated on the outer edge of the top of the detection trigger box 3, and a micro switch 18 is located directly below the pressure column 17.

[0030] The winding tension control unit 22 includes a mounting frame 15 fixedly arranged on the outer wall of the mounting seat 1, an electric push rod 13 rotatably arranged on the inner wall of the mounting frame 15, a vortex wheel 2 12 fixedly arranged at the output end of the electric push rod 13, a coupling box 2 fixedly arranged on the outer wall of the mounting seat 1, and a vortex wheel 1 11 rotatably arranged on the other side wall of the coupling box 2. The vortex wheel 2 12 is located in the coupling box 2, and the output end of the electric push rod 13 passes through and is movably arranged on the side wall of the coupling box 2. The vortex wheel 1 11 corresponds to the vortex wheel 2 12. The coupling box 2 is filled with transmission oil. The micro switch 18 is electrically controlled and connected to the electric push rod 13. A motor 14 is fixedly arranged on the outer wall of the mounting frame 15. The output end of the motor 14 is coaxially connected to the base end of the electric push rod 13. When the electric push rod 13 reaches the maximum stroke, the vortex wheel 2 12 is meshed with the vortex wheel 1 11.

[0031] The clamping and winding unit 21 includes a collecting box 8 fixedly arranged on the inner wall of the mounting base 1, a cylinder 9 rotatably arranged on one side wall of the collecting box 8, and a conical block 10 fixedly arranged on the output end of the cylinder 9. The output end of the cylinder 9 is provided with an air outlet 26, and the cylinder 9 discharges gas to the outside through the air outlet 26. The base end of the cylinder 9 is provided with an air inlet 27, and the air inlet 27 is located in the collecting box 8. The aperture of the air inlet 27 is larger than the aperture of the air outlet 26. The other end of the transmission pipe 5 is connected with the inside of the collecting box 8, and the cylinder 9 on one side is coaxially connected with the vortex wheel 11.

[0032] During specific use, first fix one end of the nitinol wire to the reel, then lap it on the guide wheel 19, and at the same time lap the nitinol wire between the guide wheels 19 at the lower end of the pressing column 17. Add lubricating oil into the detection trigger box 3, and then lift the reel so that both ends of the reel correspond to the conical blocks 10;

[0033] Start the air pump 7. The air pump 7 drives the arc-shaped baffle 6 to slowly rotate through the speed reducer 23. At the same time, the air pump 7 will transmit the external gas into the exchange transmission box 4. Since the arc-shaped baffle 6 will alternately block the transmission pipes 5 on both sides when rotating, when one side of the transmission pipe 5 is blocked, the gas in the exchange transmission box 4 will enter the collecting box 8 from the transmission pipe 5 on the other side, and then enter the cylinder 9 through the air inlet hole 27. At this time, the cylinder 9 extends and drives the conical block 10 to move;

[0034] When the other side of the transmission pipe 5 is blocked by the arc-shaped baffle 6, the gas in the exchange transmission box 4 will enter the collecting box 8 from one side of the transmission pipe 5. At this time, the corresponding cylinder 9 extends and drives the conical block 10 to move. At this time, the conical blocks 10 on both sides will clamp the reel, and the conical blocks 10 on both sides extend alternately, so as to realize the reciprocating movement of the reel, and make the nitinol wire wind around the reel more evenly; during this process, when one side of the cylinder 9 intakes air and extends, the other side of the cylinder 9 will be compressed, and the gas inside will be discharged to the outside through the air outlet hole 26;

[0035] Then start the motor 14. The motor 14 drives the electric push rod 13 and the eddy current wheel two 12 to rotate. When the wound nitinol wire is relatively thin, the nitinol wire will not contact the micro switch 18 during winding. Therefore, the electric push rod 13 is not started, and the electric push rod 13 itself is in a contracted state. The eddy current wheel one 11 and the eddy current wheel two 12 are in a non-contact state. When the eddy current wheel two 12 rotates, the surrounding transmission oil will be driven to form a rotating flow field. The eddy current wheel one 11 is located in this flow field, and the velocity field of the fluid will generate a torque on the blades of the eddy current wheel one 11. Then the eddy current wheel one 11 rotates. The eddy current wheel one 11 drives one side of the cylinder 9 to rotate, and the cylinder 9 drives the conical block 10 and the reel to rotate, so as to wind the nitinol wire, avoid excessive tension on the relatively thin nitinol wire during winding, and prevent it from being stretched and deformed or damaged. The setting of the lubricating oil can reduce the friction coefficient between the nitinol wire and other components during winding, and at the same time inhibit the thermal expansion and contraction phenomenon caused by heat generated by friction, and avoid quality problems caused by the deformation of the nitinol wire;

[0036] When the wound nitinol wire is thicker, the nitinol wire will touch the microswitch 18 during winding. The microswitch 18 controls the start of the electric push rod 13. The electric push rod 13 drives the eddy current wheel two 12 to move towards the eddy current wheel one 11. The eddy current wheel one 11 meshes with the eddy current wheel two 12, thereby realizing the one-to-one transmission between the eddy current wheel one 11 and the eddy current wheel two 12. The motor 14 will directly drive the cylinder 9 to rotate, accelerating the winding speed.

[0037] Embodiment 2, as Figure 7 shown, the difference between this embodiment and the aforementioned Embodiment 1 is that: a detection trigger box 3 is horizontally slidably arranged on the inner wall of the bottom of the mounting seat 1. A reciprocating electric push rod 25 is fixedly arranged on the inner wall of one side of the mounting seat 1. The output end of the reciprocating electric push rod 25 is fixedly connected to the outer wall of the detection trigger box 3. An air pump 7 is fixedly arranged at the bottom of the exchange transmission box 4. The air outlet of the air pump 7 is connected to the inside of the exchange transmission box 4 in a penetrating manner.

[0038] During specific use, first fix one end of the nitinol wire to the reel, then lap the nitinol wire on the guide wheel 19. At the same time, make the nitinol wire between the guide wheels 19 lap on the lower end of the pressing column 17. Add lubricating oil into the detection trigger box 3, and then lift the reel so that both ends of the reel correspond to the conical blocks 10;

[0039] Start the air pump 7. The air pump 7 transmits the external gas into the exchange transmission box 4. The gas in the exchange transmission box 4 enters the collection box 8 through the transmission pipes 5 on both sides, and then enters the cylinder 9 through the air inlet holes 27. At this time, the cylinders 9 on both sides extend and drive the conical blocks 10 to move, thereby clamping the reel by using the conical blocks 10; during this process, the gas inside the cylinder 9 is discharged to the outside through the air outlet holes 26, and then start the reciprocating electric push rod 25. The reciprocating electric push rod 25 drives the detection trigger box 3 to reciprocate, making the nitinol wire wind more evenly on the reel;

[0040] Subsequently, start the motor 14. The motor 14 drives the electric push rod 13 and the eddy current wheel two 12 to rotate. When the wound nitinol wire is thinner, the nitinol wire will not trigger the microswitch 18, and the electric push rod 13 remains in a contracted state. At this time, the working mode of the subsequent transmission is exactly the same as the fluid transmission mode described in Embodiment 1 (see Embodiment 1); when the wound nitinol wire is thicker, the nitinol wire triggers the microswitch 18, and the electric push rod 13 starts to mesh the eddy current wheel two 12 with the eddy current wheel one 11, and the working mode of the subsequent transmission is switched to the rigid meshing transmission mode described in Embodiment 1 (see Embodiment 1).

[0041] In short, if those of ordinary skill in the art are inspired by it and, without departing from the purpose of the present invention, design similar structural forms and embodiments to this technical solution without creative efforts, they shall all fall within the protection scope of the present invention.

Claims

1. A new type of wire winding device for nickel-titanium alloy wire, comprising a mounting base (1), characterized in that: The invention also comprises a winding tension control unit (22) arranged on the outer wall of the mounting seat (1) and a clamping winding unit (21) symmetrically arranged on the inner walls of both sides of the mounting seat (1), wherein the clamping winding unit (21) is provided with two groups, and the winding tension control unit (22) is drivingly connected to one group of the clamping winding units (21); an exchange transmission box (4) is fixedly provided on the outer wall of the bottom of the mounting seat (1), and the exchange transmission box (4) is connected to the clamping winding unit (21) through a pipeline; a detection trigger box (3) is fixedly provided on the inner wall of the bottom of the mounting seat (1); an arc-shaped baffle (6) is rotatably provided inside the exchange transmission box (4), and the arc-shaped side wall of the arc-shaped baffle (6) is in close contact with the inner wall of the exchange transmission box (4); an air pump (7) is fixed on the outer wall of the bottom of the exchange transmission box (4), and the built-in motor of the air pump (7) is drivingly connected to the central axis of the arc-shaped baffle (6); and the air outlet end of the air pump (7) is through-connected to the inside of the exchange transmission box (4).

2. A novel nickel-titanium alloy wire winding device according to claim 1, characterized in that: A telescopic cylinder (20) is vertically fixedly disposed on the inner wall of the bottom of the detection trigger box (3); a micro switch (18) is disposed at the upper end of the telescopic cylinder (20); and the micro switch (18) is electrically controlled and connected to a winding tension control unit (22).

3. A novel nickel-titanium alloy wire winding device according to claim 2, characterized in that: A pressure column (17) is vertically provided on the inner wall of the detection trigger box (3), and the micro switch (18) is located directly below the pressure column (17).

4. A novel nickel-titanium alloy wire winding device according to claim 3, characterized in that: The winding tension control unit (22) comprises an electric push rod (13) fixedly arranged on the outer wall of the mounting seat (1), a vortex wheel 2 (12) fixedly arranged at the output end of the electric push rod (13), a coupling box (2) fixedly arranged on the outer wall of the mounting seat (1), and a vortex wheel 1 (11) rotatably arranged on the other side wall of the coupling box (2), wherein the vortex wheel 2 (12) is located in the coupling box (2), the output end of the electric push rod (13) penetrates through and is movably arranged on the side wall of the coupling box (2), the coupling box (2) is filled with transmission oil, and the micro switch (18) is electrically controlled and connected to the electric push rod (13).

5. A novel nickel-titanium alloy wire winding device according to claim 4, characterized in that: The clamping and winding unit (21) comprises a collecting box (8) fixedly arranged on the inner wall of the mounting base (1), and a cylinder (9) rotatably arranged on a side wall of the collecting box (8); an outlet hole (26) is provided at the output end of the cylinder (9); an inlet hole (27) is provided at the base end of the cylinder (9); the diameter of the inlet hole (27) is larger than the diameter of the outlet hole (26); the collecting box (8) is connected to the exchange transmission box (4) through a pipeline; and the cylinder (9) on one side is coaxially connected to the vortex wheel (11).

6. A novel nickel-titanium alloy wire winding device according to claim 5, characterized in that: When the electric push rod (13) reaches the maximum stroke, the eddy current wheel 2 (12) meshes with the eddy current wheel 1 (11).

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