Auxiliary upper head changing winding mechanism of wire drawing machine and control method of auxiliary upper head changing winding mechanism

Abstract

The invention relates to an auxiliary upper head-changing winding mechanism of a wire drawing machine and a control method of the auxiliary upper head-changing winding mechanism, and belongs to the technical field of wire drawing machines.The auxiliary upper head-changing winding mechanism comprises a driving main rack, a plurality of machine heads are arranged on the end face of the driving main rack, and machine head rotating discs are arranged between the machine heads and the driving main rack; the upper end of the machine head rotating disc is provided with an auxiliary upper head changing winding mechanism which is movably connected with the outer side end of the machine head in a pressing mode. The auxiliary upper head changing winding mechanism comprises a movable support, a fixing frame is arranged between the upper end of the movable support and the driving main machine frame, a bearing seat II is arranged at the lower end of the fixing frame, a lagging type yarn pushing rod piston is arranged at the front end of the bearing seat II, an air ring is arranged between the rear end of the lagging type yarn pushing rod piston and the bearing seat II, and a plurality of V-shaped yarn winding pieces are arranged on the periphery of the lagging type yarn pushing rod piston. And a V-shaped piece piston is arranged among the V-shaped yarn winding piece, the bearing seat II and the lagging type yarn pushing rod piston. The yarn passes through the space between the machine head and the V-shaped yarn winding sheet in parallel without obstacles, the angle and the linear speed of the yarn are not changed, and the stability of the wire drawing process is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of wire drawing machines, and particularly relates to an auxiliary head-changing winding mechanism for a wire drawing machine and a control method therefor. Background Art

[0002] In the current fiberglass kiln wire drawing process, there are two wire drawing and forming methods. One is the cylindrical direct yarn wire drawing method, and the other is the saddle-shaped cake yarn wire drawing method. An upper wire ring must be set for each head. They push the yarn through the front upper wire ring by a push rod for head changing. After the head is changed or the bobbin is replaced, the push rod retracts. Under the action of the rotation of the push rod and the head, the yarn exists in a spiral shape between the two winding cylinders to form a "yarn cluster connection line". This integrated upper wire ring must be manually cut and cleaned after each head change. Not only is there a lot of waste yarn from the head change that cannot be utilized, but also a lot of hairy yarn is generated, which affects the environment. In addition, the internal and external layer connection lines between the yarn clusters and between the upper wire rings also need to be cut to unload the bobbin.

[0003] Currently, to meet the requirement of the manipulator to pick up and unload the yarn, it is necessary to manually cut the yarn connection line between the head-changing yarn on the upper wire ring and the winding cylinder, so that the manipulator can participate in the automatic yarn picking and unloading. Such a man-machine cross-operation has potential safety hazards. Due to the poor environment of the fiberglass wire drawing process, and the frequent manual operations result in high labor intensity and low efficiency, which is not conducive to the full realization of workshop automation and hinders the automation process of intelligent manufacturing.

[0004] Considering that if an automatic yarn cutting mechanism is used without manual operation, for the cake yarn wire drawing process, the cake is in a saddle shape, and under the action of the push rod, the head and tail yarns pass through the gap between the two winding cylinders in a positive and negative spiral manner without hindrance, and it is easier to automatically cut the yarn. For the direct yarn wire drawing process, the yarn cake is cylindrical, the yarn roll diameter is large, and the head diameter is small. The distance between the two yarn rolls forms a deep groove. When the push rod pushes the yarn out, the outer tail yarn is easy to fall into the deep groove and stay for multiple turns, making it difficult to implement automatic yarn cutting. Therefore, the push rod must be updated. Summary of the Invention

[0005] The present invention mainly solves the deficiencies existing in the prior art, and provides an auxiliary head-changing winding mechanism for a wire drawing machine and a control method therefor, which have the characteristics of compact structure, good running stability and good use effect. The yarn passes through between the head and the V-shaped yarn winding piece smoothly in parallel, and at the same time, the angle and linear velocity of the yarn remain unchanged, ensuring the stability of the wire drawing process.

[0006] The above technical problems of the present invention are mainly solved by the following technical solutions:

[0007] An auxiliary head-changing winding mechanism for a wire drawing machine, comprising a driving main frame, on the end face of the driving main frame are provided several machine heads, between the machine heads and the driving main frame is provided a head turntable which is fixedly connected in a movable nested manner with the driving main frame, and on the upper end of the head turntable is provided an auxiliary head-changing winding mechanism which is movably press-connected with the outer end of the machine head. The auxiliary head-changing winding mechanism comprises a moving support, between the upper end of the moving support and the driving main frame is provided a fixed support which is movably inserted and connected with the moving support, at the lower end of the fixed support is provided a bearing seat II, at the front end of the bearing seat II is provided a lagging yarn pushing rod piston which is fixedly connected in a reset spring insertion manner with the bearing seat II, between the rear end of the lagging yarn pushing rod piston and the bearing seat II is provided an air ring, around the lagging yarn pushing rod piston are provided several V-shaped yarn winding pieces, and between the V-shaped yarn winding pieces and the bearing seat II and the lagging yarn pushing rod piston is provided a V-shaped piece piston.

[0008] Preferably, a connecting rod is provided between the middle of the V-shaped piece piston and the V-shaped yarn winding piece, and the rear end of the V-shaped yarn winding piece is fixedly connected with the V-shaped piece piston by a pin shaft; between the rear end of the V-shaped piece piston and the bearing seat II is provided a spring pressing piece, and between the spring pressing piece and the V-shaped piece piston are provided several V-shaped piece expanding springs which are inserted and guided by pin shafts.

[0009] Preferably, a servo motor I is provided inside the fixed support, at the front end of the servo motor I is provided a ball screw, between the ball screw and the servo motor I is provided a bearing seat I, between the fixed support and the moving support is provided a linear guide rail, and between the ball screw and the moving support is provided a pushing sleeve which is threadedly sleeved on the ball screw.

[0010] Preferably, between the V-shaped yarn winding piece and the fixed support is provided a servo motor II which is fixedly connected with the moving support, on the end face of the servo motor II is provided a driving synchronous pulley which is fixedly inserted and limited by a flat key with the servo motor II, at the rear end of the bearing seat II is provided a driven synchronous pulley I which is fixedly inserted and limited by a flat key with the lagging yarn pushing rod piston, at the rear end of the driven synchronous pulley I is provided a locking nut which is threadedly sleeved and fixed with the lagging yarn pushing rod piston, and between the driving synchronous pulley and the driven synchronous pulley I is provided a synchronous belt I.

[0011] Preferably, a pair of machine heads are provided on the head turntable, between the machine heads is provided a partition frame, between the lower end of the auxiliary head-changing winding mechanism and the machine head is provided a wire pushing and blocking screw rod mechanism, on the outer end of the machine head running with the auxiliary head-changing winding mechanism is provided a transverse moving wire arranging frame, and at the lower end of the transverse moving wire arranging frame is provided a slow pulling frame. The structure of the transverse moving wire arranging frame is the prior art of the application number 2020232249998, and the structure of the slow pulling frame is the prior art of the application number 2020232279993.

[0012] Preferably, the wire pushing and blocking screw rod mechanism includes a support cross beam, on one side of which there is a motor synchronous pulley, and on the other side there is a driven synchronous pulley II. A synchronous belt II is provided between the motor synchronous pulley and the driven synchronous pulley. At the lower end of the support cross beam, there is a ratchet sliding assembly fixedly connected to the support cross beam in a sliding manner. A synchronous belt pressing block is provided between the upper end of the ratchet sliding assembly and the synchronous belt II. At the rear end of the support cross beam, there is an upper stop screw rod fixedly connected to the ratchet sliding assembly. At the lower end of the ratchet sliding assembly, there is a lower stop screw rod, and a lower stop screw rod fixing seat is provided between the ratchet sliding assembly and the lower stop screw rod.

[0013] Preferably, the ratchet sliding assembly includes a slider seat, which is composed of an inner slider assembly and an outer slider assembly. At the lower end of the slider seat, there is a ratchet pin baffle fixedly connected to the outer slider assembly. On the side of the ratchet pin baffle, there is a pawl seat fixedly connected to the inner slider assembly. A ratchet is provided between the ratchet pin baffle and the pawl seat, and a pawl that is movably engaged with the ratchet is provided between the ratchet pin baffle and the ratchet. Both the inner slider assembly and the outer slider assembly are composed of a slider backing plate, a slider, and a slider pressing plate. A slider backing plate is provided between the upper end of the slider and the synchronous belt pressing block, and a slider pressing plate is provided between the lower end of the slider and the ratchet pin baffle.

[0014] Preferably, at the rear end of one side of the support cross beam, there is a servo motor fixedly connected to the motor synchronous pulley in an insertion and transmission manner. On the other side of the support cross beam, there is a pulley shaft that supports the driven synchronous pulley II in an insertion manner. A bearing is provided between the pulley shaft and the driven synchronous pulley II. An installation plate fixedly connected to the support cross beam in a socket welding manner is provided between the servo motor and the ratchet sliding assembly.

[0015] The control method of the auxiliary head-changing and winding mechanism of the wire drawing machine includes the following operation steps:

[0016] The first step: The auxiliary head-changing and winding mechanism is provided with a fixed frame, which is fixed above the head at the end face of the driving main frame and extends from the panel of the driving main frame to the front end of the head. The auxiliary head-changing and winding mechanism is supported by a moving bracket to correspond to the front end of the head.

[0017] The second step: Before operation, the auxiliary head-changing and winding mechanism is in a state of being opened without air pressure and is about 2 - 3 cm away from the front end of the head to allow the yarn to pass through. The slow pulling frame starts to lead the yarn down, and the auxiliary head-changing and winding mechanism moves closer to the head.

[0018] The third step: Insert the yarn and the winding bobbin, and insert the V-shaped yarn winding piece about 2 cm into the winding bobbin to cover the surface. At this time, the auxiliary head-changing and winding mechanism rotates synchronously with the head, and the yarn is wound on the V-shaped yarn winding piece.

[0019] Step 4: The wire pushing and blocking screw rod mechanism instantly retracts to the middle of the first wire winding cylinder, then the wire pushing and blocking screw rod mechanism extends again, approaches the V-shaped wire winding piece, and then directly retracts to the bottom;

[0020] Step 5: The auxiliary upper head-changing winding mechanism leaves the wire winding cylinder, the compressed air is turned on, the V-shaped piece piston works, so that the V-shaped wire winding piece contracts and is in a vertical state. Then the lag-type wire pushing rod piston works to push out the yarn wound on the V-shaped wire winding piece, and the yarn falls freely.

[0021] Step 6: When changing the full bobbin, the auxiliary upper head-changing winding mechanism operates synchronously with the full bobbin headstock, moves towards the headstock and inserts about 2 cm into the wire winding cylinder. The lower blocking screw rod pushes the yarn into the groove of the V-shaped wire winding piece.

[0022] Step 7: The lower blocking screw rod and the yarn move with the auxiliary upper head-changing winding mechanism, and slightly leave the end face of the headstock wire winding cylinder to maintain the linear velocity. The headstock turntable is started to switch the spare headstock to the working headstock position.

[0023] Step 8: The auxiliary upper head-changing winding mechanism and the lower blocking screw rod instantly move and insert onto the wire winding cylinder. Then the lower blocking screw rod continues to quickly retract to the middle of the first wire winding cylinder, extends again, approaches the V-shaped wire winding piece to press the end yarn, and then directly retracts to the bottom. At this time, the auxiliary upper head-changing winding mechanism leaves the wire winding cylinder, the compressed air is turned on, the V-shaped piece piston works, so that the V-shaped wire winding piece contracts and is in a vertical state. Then the lag-type wire pushing rod piston works to push out the yarn wound on the V-shaped wire winding piece, and the yarn falls freely.

[0024] The present invention can achieve the following effects:

[0025] The present invention provides an auxiliary upper head-changing winding mechanism for a wire drawing machine and its control method. Compared with the prior art, it has the characteristics of compact structure, good running stability and good use effect. It enables the yarn to pass through smoothly between the headstock and the V-shaped wire winding piece without obstacles, and at the same time, the angle and linear velocity of the yarn remain unchanged, ensuring the stability of the wire drawing process. The auxiliary upper head-changing winding mechanism is applicable to the wire drawing of direct yarn and cake yarn, and can be integrated with the wire drawing machine or separately arranged on the table wall panel, and can be used on multi-headstock and single-headstock machines. Brief Description of the Drawings

[0026] Figure 1 is the structural schematic diagram of the present invention.

[0027] Figure 2 is the front view structural schematic diagram of the present invention.

[0028] Figure 3 is the side view structural schematic diagram of the present invention.

[0029] Figure 4 is the sectional view of the state structure of the auxiliary upper head-changing winding mechanism of the present invention when there is no compressed air.

[0030] Figure 5 It is a sectional view of the state structure of the auxiliary upper head-changing winding mechanism of the present invention when there is compressed air.

[0031] Figure 6 It is a schematic structural diagram of the wire-pushing and blocking screw rod mechanism of the present invention.

[0032] Figure 7 It is a schematic structural diagram of the ratchet sliding component of the present invention.

[0033] In the figure: headstock 1, auxiliary upper head-changing winding mechanism 2, wire-pushing and blocking screw rod mechanism 3, driving main frame 4, transverse wire arranging frame 5, slow-drawing frame 6, headstock turntable 7, partition frame 8, fixing frame 9, servo motor I 10, bearing block I 11, ball screw 12, linear guide 13, pushing sleeve 14, moving bracket 15, servo motor II 16, driving synchronous pulley 17, synchronous belt I 18, locking nut 19, driven synchronous pulley I 20, bearing block II 21, V-shaped piece opening spring 22, air ring 23, V-shaped piece piston 24, lag-type yarn-pushing rod piston 25, spring pressing piece 26, connecting rod 27, V-shaped winding piece 28, motor synchronous pulley 29, mounting plate 30, upper stop screw rod 31, support cross beam 32, synchronous belt II 33, driven synchronous pulley II 34, bearing 35, belt pulley shaft 36, synchronous belt pressing block 37, ratchet sliding component 38, lower stop screw rod fixing seat 39, lower stop screw rod 40, servo motor III 41, slider seat 42, slider backing plate 43, slider 44, slider pressing plate 45, ratchet pin baffle 46, ratchet 47, pawl 48, pawl seat 49. Detailed implementation manners

[0034] The technical solution of the invention will be further specifically described below through embodiments in conjunction with the accompanying drawings.

[0035] Embodiment: As Figure 1-7 shown, an auxiliary upper head-changing winding mechanism of a wire drawing machine includes a driving main frame 4. A plurality of headstocks 1 are provided on the end face of the driving main frame 4. A headstock turntable 7 that is movably nested and connected to the driving main frame 4 is provided between the headstock 1 and the driving main frame 4. An auxiliary upper head-changing winding mechanism 2 that is movably press-connected to the outer end of the headstock 1 is provided above the headstock turntable 7. A pair of headstocks 1 are provided on the headstock turntable 7. A partition frame 8 is provided between the headstocks 1. A wire-pushing and blocking screw rod mechanism 3 is provided between the lower end of the auxiliary upper head-changing winding mechanism 2 and the headstock 1. A transverse wire arranging frame 5 is provided at the outer end of the headstock 1 that operates with the auxiliary upper head-changing winding mechanism 2. A slow-drawing frame 6 is provided below the transverse wire arranging frame 5.

[0036] The auxiliary upper head-changing winding mechanism 2 includes a moving bracket 15. A fixed bracket 9 that is movably inserted and connected to the moving bracket 15 is provided between the upper end of the moving bracket 15 and the driving main frame 4. A servo motor I 10 is provided inside the fixed bracket 9. A ball screw 12 is provided at the front end of the servo motor I 10. A bearing block I 11 is provided between the ball screw 12 and the servo motor I 10. A linear guide rail 13 is provided between the fixed bracket 9 and the moving bracket 15. A pushing sleeve 14 that is threadedly sleeved on the ball screw 12 is provided between the ball screw 12 and the moving bracket 15. A bearing block II 21 is provided at the lower end of the fixed bracket 9. A lagging yarn-pushing rod piston 25 that is inserted and fixed to the bearing block II 21 in a reset spring manner is provided at the front end of the bearing block II 21. An air ring 23 is provided between the rear end of the lagging yarn-pushing rod piston 25 and the bearing block II 21. A number of V-shaped yarn-winding pieces 28 are provided on the periphery of the lagging yarn-pushing rod piston 25. A V-shaped piece piston 24 is provided between the V-shaped yarn-winding pieces 28 and the bearing block II 21, the lagging yarn-pushing rod piston 25. A connecting rod 27 is provided between the middle of the V-shaped piece piston 24 and the V-shaped yarn-winding pieces 28. The rear end of the V-shaped yarn-winding pieces 28 is fixedly inserted with a pin shaft to the V-shaped piece piston 24. A spring pressing piece 26 is provided between the rear end of the V-shaped piece piston 24 and the bearing block II 21. A number of V-shaped piece expanding springs 22 that are inserted and guided by a pin shaft are provided between the spring pressing piece 26 and the V-shaped piece piston 24. A servo motor II 16 fixedly connected to the moving bracket 15 is provided between the V-shaped yarn-winding pieces 28 and the fixed bracket 9. A driving synchronous pulley 17 that is inserted and fixed to the servo motor II 16 with a flat key for position limitation is provided on the end face of the servo motor II 16. A driven synchronous pulley I 20 that is inserted and fixed to the lagging yarn-pushing rod piston 25 with a flat key for position limitation is provided at the rear end of the bearing block II 21. A locking nut 19 that is threadedly sleeved and fixed to the lagging yarn-pushing rod piston 25 is provided at the rear end of the driven synchronous pulley I 20. A synchronous belt I 18 is provided between the driving synchronous pulley 17 and the driven synchronous pulley I 20.

[0037] The wire pushing and blocking screw rod mechanism 3 includes a support cross beam 32. On one side of the support cross beam 32, there is a motor synchronous belt pulley 29. On the other side of the support cross beam 32, there is a driven synchronous belt pulley II 34. A synchronous belt II 33 is provided between the motor synchronous belt pulley 29 and the driven synchronous belt pulley 34. At the rear end on one side of the support cross beam 32, there is a servo motor 41 fixedly connected to the motor synchronous belt pulley 29 in an inserted and engaged transmission manner. On the other side of the support cross beam 32, there is a belt pulley shaft 36 supported by inserting and engaging with the driven synchronous belt pulley II 34. A bearing 35 is provided between the belt pulley shaft 36 and the driven synchronous belt pulley II 34. An installation plate 30 fixedly connected to the support cross beam 32 in a socketed and welded manner is provided between the servo motor 41 and the ratchet sliding assembly 38. At the lower end of the support cross beam 32, there is a ratchet sliding assembly 38 slidably and fixedly connected to the support cross beam 32. A synchronous belt pressing block 37 is provided between the upper end of the ratchet sliding assembly 38 and the synchronous belt II 33. At the rear end of the support cross beam 32, there is an upper blocking screw rod 31 connected and fixed to the ratchet sliding assembly 38. At the lower end of the ratchet sliding assembly 38, there is a lower blocking screw rod 40. A lower blocking screw rod fixing seat 39 is provided between the ratchet sliding assembly 38 and the lower blocking screw rod 40. The ratchet sliding assembly 38 includes a slider seat 42. The slider seat 42 is composed of an inner slider assembly and an outer slider assembly. At the lower end of the slider seat 42, there is a ratchet pin baffle 46 fixedly connected to the outer slider assembly. On the side of the ratchet pin baffle 46, there is a pawl seat 49 fixedly connected to the inner slider assembly. A ratchet 47 is provided between the ratchet pin baffle 46 and the pawl seat 49. A pawl 48 that is movably engaged with the ratchet 47 is provided between the ratchet pin baffle 46 and the ratchet 47. The inner slider assembly and the outer slider assembly are both composed of a slider backing plate 43, a slider 44, and a slider pressing plate 45. A slider backing plate 43 is provided between the upper end of the slider 44 and the synchronous belt pressing block 37. A slider pressing plate 45 is provided between the lower end of the slider 44 and the ratchet pin baffle 46.

[0038] The control method of the auxiliary upper head-changing winding mechanism of the wire drawing machine includes the following operation steps:

[0039] The first step: The auxiliary upper head-changing winding mechanism 2 is provided with a fixed frame 9. The fixed frame 9 is fixed above the machine head 1 on the end face of the driving main frame 4 and extends from the panel of the driving main frame 4 to the front end of the machine head 1. The auxiliary upper head-changing winding mechanism 2 is supported by a moving bracket 15 to correspond to the front end of the machine head 1.

[0040] The second step: Before operation, the auxiliary upper head-changing winding mechanism 2 is in a state of being opened without air pressure and is about 2 - 3 cm away from the front end of the machine head 1 to allow the yarn to pass through. The slow pulling frame 6 is started to lead the yarn down, and the auxiliary upper head-changing winding mechanism 2 moves closer to the machine head 1.

[0041] The third step: Insert the yarn and the winding bobbin, so that the V-shaped yarn winding piece 28 is inserted about 2 cm into the winding bobbin and covers the surface. At this time, the auxiliary upper head-changing winding mechanism 2 rotates synchronously with the machine head 1, and the yarn is wound on the V-shaped yarn winding piece 28.

[0042] Step 4: The wire pushing and blocking screw rod mechanism 3 instantaneously retracts to the middle of the first wire winding cylinder, and then the wire pushing and blocking screw rod mechanism 3 is pushed out again. After approaching the V-shaped wire winding piece 28, it directly retracts to the bottom.

[0043] Step 5: The auxiliary upper head-changing winding mechanism 2 leaves the wire winding cylinder, the compressed air is turned on, the V-shaped piece piston 24 works, so that the V-shaped wire winding piece 28 contracts to a vertical state. Then the lag-type wire pushing rod piston 25 works to push out the yarn wound on the V-shaped wire winding piece 28 to freely fall.

[0044] Step 6: When changing the full cylinder, the auxiliary upper head-changing winding mechanism 2 operates synchronously with the full cylinder head and moves towards the head 1 and inserts about 2 cm into the wire winding cylinder. The lower blocking screw rod 31 pushes the yarn into the groove of the V-shaped wire winding piece 28.

[0045] Step 7: The lower blocking screw rod 31 and the yarn move along with the auxiliary upper head-changing winding mechanism 2, and slightly leave the end face of the head wire winding cylinder to maintain the linear velocity. The head turntable 7 is started to switch the spare head to the working head position.

[0046] Step 8: The auxiliary upper head-changing winding mechanism 2 and the lower blocking screw rod 31 instantaneously move and insert onto the wire winding cylinder. Then the lower blocking screw rod 31 continues to quickly retract to the middle of the first wire winding cylinder, and is pushed out again. After approaching the V-shaped wire winding piece 28 to press the head yarn, it directly retracts to the bottom. At this time, the auxiliary upper head-changing winding mechanism 2 leaves the wire winding cylinder, the compressed air is turned on and the V-shaped piece piston 24 works, so that the V-shaped wire winding piece 28 contracts to a vertical state. Then the lag-type wire pushing rod piston 25 works to push out the yarn wound on the V-shaped wire winding piece 28 to freely fall.

[0047] In summary, the auxiliary upper head-changing winding mechanism of this wire drawing machine and its control method have the characteristics of compact structure, good running stability and good use effect. It enables the yarn to pass through between the head and the V-shaped wire winding piece smoothly without obstacles, and at the same time, the angle and linear velocity of the yarn remain unchanged, ensuring the stability of the wire drawing process.

[0048] The above are only specific embodiments of the present invention, but the structural features of the present invention are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present invention are covered by the patent scope of the present invention.

Claims

1. An auxiliary head-changing winding mechanism for a wire drawing machine, comprising a driving main frame (4), on the end face of the driving main frame (4) there are provided several machine heads (1), between the machine head (1) and the driving main frame (4) there is a machine head turntable (7) which is fixedly connected by being movably nested with the driving main frame (4), and it is characterized in that: An auxiliary upper head-changing winding mechanism (2) that is movably press-connected to the outer end of the machine head (1) is provided at the upper end of the machine head turntable (7); the auxiliary upper head-changing winding mechanism (2) includes a moving bracket (15), and a fixed bracket (9) that is movably inserted and connected to the moving bracket (15) is provided between the upper end of the moving bracket (15) and the driving main frame (4). A bearing seat II (21) is provided at the lower end of the fixed bracket (9), and a lagging yarn-pushing rod piston (25) that is reset spring-inserted and fixed to the bearing seat II (21) is provided at the front end of the bearing seat II (21). An air ring (23) is provided between the rear end of the lagging yarn-pushing rod piston (25) and the bearing seat II (21). A number of V-shaped yarn winding pieces (28) are provided around the lagging yarn-pushing rod piston (25), and a V-shaped piece piston (24) is provided between the V-shaped yarn winding pieces (28) and the bearing seat II (21), the lagging yarn-pushing rod piston (25).

2. The auxiliary head-changing and winding mechanism for a wire drawing machine according to claim 1, wherein: A connecting rod (27) is provided between the middle of the V-shaped piece piston (24) and the V-shaped yarn winding piece (28), and the rear end of the V-shaped yarn winding piece (28) is pin-connected and fixed to the V-shaped piece piston (24); a spring pressing piece (26) is provided between the rear end of the V-shaped piece piston (24) and the bearing seat II (21), and a number of V-shaped piece expanding springs (22) that are pin-guided and inserted are provided between the spring pressing piece (26) and the V-shaped piece piston (24).

3. The auxiliary head-changing and winding mechanism for a wire drawing machine according to claim 1, characterized in that: A servo motor I (10) is provided inside the fixed bracket (9), a ball screw (12) is provided at the front end of the servo motor I (10), a bearing seat I (11) is provided between the ball screw (12) and the servo motor I (10), a linear guide rail (13) is provided between the fixed bracket (9) and the moving bracket (15), and a pushing sleeve (14) that is threadedly sleeved on the ball screw (12) is provided between the ball screw (12) and the moving bracket (15).

4. The auxiliary head-changing and winding mechanism for a wire drawing machine according to claim 1, characterized in that: A servo motor II (16) fixedly connected to the moving bracket (15) is provided between the V-shaped yarn winding piece (28) and the fixed bracket (9). A driving synchronous pulley (17) that is flat-key limit inserted and fixed to the servo motor II (16) is provided on the end face of the servo motor II (16). A driven synchronous pulley I (20) that is flat-key limit inserted and fixed to the lagging yarn-pushing rod piston (25) is provided at the rear end of the bearing seat II (21). A locking nut (19) that is threadedly sleeved and fixed to the lagging yarn-pushing rod piston (25) is provided at the rear end of the driven synchronous pulley I (20). A synchronous belt I (18) is provided between the driving synchronous pulley (17) and the driven synchronous pulley I (20).

5. The wire drawing machine auxiliary head-changing and winding mechanism according to claim 1 or 2, characterized in that: A pair of machine heads (1) are provided on the machine head turntable (7), a partition frame (8) is provided between the machine heads (1), a wire-pushing and blocking screw rod mechanism (3) is provided between the lower end of the auxiliary upper head-changing winding mechanism (2) and the machine head (1), a transverse movement wire arranging frame (5) is provided at the outer end of the machine head (1) that runs with the auxiliary upper head-changing winding mechanism (2), and a slow pulling frame (6) is provided at the lower end of the transverse movement wire arranging frame (5).

6. The winding mechanism for auxiliary head replacement during wire drawing according to claim 5, characterized in that: The described wire pushing and blocking screw rod mechanism (3) includes a support cross beam (32). On one side of the support cross beam (32), there is a motor synchronous pulley (29). On the other side of the support cross beam (32), there is a driven synchronous pulley II (34). A synchronous belt II (33) is provided between the motor synchronous pulley (29) and the driven synchronous pulley (34). At the lower end of the support cross beam (32), there is a ratchet sliding assembly (38) fixedly connected to the support cross beam (32) in a sliding manner. A synchronous belt pressing block (37) is provided between the upper end of the ratchet sliding assembly (38) and the synchronous belt II (33). At the rear end of the support cross beam (32), there is an upper blocking screw rod (31) fixedly connected to the ratchet sliding assembly (38). At the lower end of the ratchet sliding assembly (38), there is a lower blocking screw rod (40). A lower blocking screw rod fixing seat (39) is provided between the ratchet sliding assembly (38) and the lower blocking screw rod (40).

7. The auxiliary head-changing and winding mechanism for a wire drawing machine according to claim 6, characterized in that: The described ratchet sliding assembly (38) includes a slider seat (42). The slider seat (42) is composed of an inner slider assembly and an outer slider assembly. At the lower end of the slider seat (42), there is a ratchet pin baffle (46) fixedly connected to the outer slider assembly. On the side of the ratchet pin baffle (46), there is a pawl seat (49) fixedly connected to the inner slider assembly. A ratchet (47) is provided between the ratchet pin baffle (46) and the pawl seat (49). A pawl (48) that is movably engaged with the ratchet (47) is provided between the ratchet pin baffle (46) and the ratchet (47). Both the inner slider assembly and the outer slider assembly are composed of a slider backing plate (43), a slider (44), and a slider pressing plate (45). A slider backing plate (43) is provided between the upper end of the slider (44) and the synchronous belt pressing block (37). A slider pressing plate (45) is provided between the lower end of the slider (44) and the ratchet pin baffle (46).

8. The auxiliary head-changing winding mechanism for a wire drawing machine according to claim 6, characterized in that: On the rear side of one side of the support cross beam (32), there is a servo motor (41) fixedly connected to the motor synchronous pulley (29) in an insertable and driving manner. On the other side of the support cross beam (32), there is a pulley shaft (36) that is inserted and supported by the driven synchronous pulley II (34). A bearing (35) is provided between the pulley shaft (36) and the driven synchronous pulley II (34). An installation plate (30) fixedly connected to the support cross beam (32) in a socketed and welded manner is provided between the servo motor (41) and the ratchet sliding assembly (38).

9. The control method of the auxiliary head-changing and winding mechanism of the wire drawing machine according to claim 7, characterized in that It includes the following operation steps: The first step: The auxiliary head-changing winding mechanism (2) is provided with a fixed frame (9). The fixed frame (9) is fixed above the head (1) on the end face of the driving main frame (4), extending from the panel of the driving main frame (4) to the front end of the head (1). The auxiliary head-changing winding mechanism (2) is supported by a moving bracket (15) to correspond to the front end of the head (1). The second step: Before operation, the auxiliary head-changing winding mechanism (2) is in a state of being opened without air pressure and is about 2 - 3 cm away from the front end of the head (1) to allow the yarn to pass through. The slow pulling frame (6) is started to lead the yarn down, and the auxiliary head-changing winding mechanism (2) moves closer to the head (1). Step 3: Insert the yarn and the winding bobbin, and insert the V-shaped yarn winding piece (28) about 2 cm into the winding bobbin to cover the surface. At this time, the auxiliary upper head-changing winding mechanism (2) rotates synchronously with the machine head (1), and the yarn is wound around the V-shaped yarn winding piece (28). Step 4: The wire pushing and blocking screw rod mechanism (3) instantly retracts to the middle of the first winding bobbin, and then the wire pushing and blocking screw rod mechanism (3) is pushed out again, approaches the V-shaped yarn winding piece (28), and then directly retracts to the bottom. Step 5: The auxiliary upper head-changing winding mechanism (2) leaves the winding bobbin, the compressed air is turned on, and the V-shaped piece piston (24) works to make the V-shaped yarn winding piece (28) contract to a vertical state. Then the lagging yarn pushing rod piston (25) works to push out the yarn wound around the V-shaped yarn winding piece (28) to fall freely. Step 6: When changing the full bobbin, the auxiliary upper head-changing winding mechanism (2) operates synchronously with the full bobbin machine head and moves towards the machine head (1) to insert about 2 cm into the winding bobbin. The lower blocking screw rod (31) pushes the yarn into the groove of the V-shaped yarn winding piece (28). Step 7: The lower blocking screw rod (31) and the yarn move with the auxiliary upper head-changing winding mechanism (2), and slightly leave the end face of the machine head winding bobbin to maintain the linear speed. Start the machine head turntable (7) to switch the spare machine head to the working machine head position. Step 8: The auxiliary upper head-changing winding mechanism (2) and the lower blocking screw rod (31) instantly move and insert onto the winding bobbin. Then the lower blocking screw rod (31) continues to quickly retract to the middle of the first winding bobbin, is pushed out again to approach the V-shaped yarn winding piece (28) to press the end yarn, and then directly retracts to the bottom. At this time, the auxiliary upper head-changing winding mechanism (2) leaves the winding bobbin, the compressed air is turned on and the V-shaped piece piston (24) works to make the V-shaped yarn winding piece (28) contract to a vertical state. Then the lagging yarn pushing rod piston (25) works to push out the yarn wound around the V-shaped yarn winding piece (28) to fall freely.

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