A center hole alignment device for a wire drawing die

Abstract

The application is suitable for the technical field of wire drawing, and provides a center hole alignment device of a wire drawing die, which comprises a main body assembly, the main body assembly comprises a unit and a wire drawing groove, a die seat mechanism is installed on the inner wall of the wire drawing groove, an adjusting assembly is used for assisting adjustment of a wire entering the die seat mechanism for the first time, and an auxiliary threading assembly is used for assisting guidance of the wire during threading, the auxiliary threading assembly comprises a connecting plate and an adjusting mechanism connected to one side of the connecting plate. The device solves the problems of drawing misalignment, die hole wear, short service life of the die and poor wire precision caused by manual positioning misalignment. The device limits the wire left and right through two pressure rollers of a wire clamping mechanism, and adjusts and limits the space up and down through two spools, so that the wire is limited at a position aligned with the center hole of the wire drawing die. The device reduces the inclination deviation of the wire during threading and drawing, reduces one-side abnormal wear of the die hole, and prolongs the service life of the wire drawing die.

Description

Technical Field

[0001] This invention relates to the field of wire drawing technology, and more specifically, to a device for aligning the center hole of a wire drawing die. Background Technology

[0002] Wire drawing machines are core forming equipment in the precision machining of metal wires. Through the drawing process, metal wires are passed through dies of specific specifications to achieve wire diameter reduction and shaping, cross-sectional regularization, and surface performance optimization. They are key equipment for wire production in industries such as wire and cable and precision metal products. As the core functional component of the drawing process, the dimensional accuracy, geometric tolerances, and coaxiality and parallelism of the die holes directly determine the quality of the finished drawn wire.

[0003] Currently, the wire drawing process uses a manual disassembly and assembly operation mode. In the wire drawing process, the wire drawing die must first be removed from the matching die sleeve. After the wire is threaded, the wire drawing die is manually put back into the die sleeve. The die reset process relies solely on the operator's manual positioning. The die sleeve end face is aligned with the equipment reference surface by manual fitting. After the initial positioning of the die is completed, the wire is tightened and fixed to complete the entire wire drawing operation.

[0004] However, manual positioning cannot guarantee a full fit between the die end face and the reference surface, which can easily cause the die to tilt and shift. This results in an initial positioning deviation where the die axis is not parallel to the drawing center line. Furthermore, during the wire tightening process after threading, the wire exerts lateral tension on the inner wall of the die hole, further amplifying the existing slight tilt and shift and exacerbating the positioning inaccuracy. At the same time, factors such as the bending deformation of the wire itself, tension fluctuations during the drawing process, and asymmetric clamping force of the die can cause the wire to continuously deviate to one side of the die hole, resulting in abnormal wear in the die hole. As the diameter of the worn side of the die hole expands, the actual direction of the wire will continue to shift towards the unworn side, ultimately forming dynamic misalignment during the drawing process. This creates a vicious cycle of positioning deviation, unilateral wear, and exacerbated misalignment, which not only significantly shortens the service life of the wire drawing die but also seriously affects the dimensional accuracy of the wire drawing and the consistency of the finished product. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a center hole alignment device for wire drawing dies.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a center hole alignment device for a wire drawing die, comprising a main body assembly, the main body assembly comprising a machine unit and a wire drawing groove, wherein a die base mechanism is installed on the inner wall of the wire drawing groove.

[0007] An adjustment component is used to assist in adjusting the wires that are initially entering the die holder mechanism.

[0008] The threading aid is used to guide the thread during threading. The threading aid includes a connecting plate and an adjustment mechanism connected to one side of the connecting plate.

[0009] The adjustment mechanism includes a clamping plate and a slide rail formed on the side wall of the clamping plate. Multiple sets of wire clamping mechanisms slide on the side wall of the slide rail. Multiple grooves are formed on the side wall of each clamping plate. The multiple grooves are corresponding to multiple wire passage slots and multiple sets of wire clamping mechanisms on one side of the mold base body.

[0010] The alignment judgment component is configured in multiple sets and installed on the wire clamping mechanism on the wire inlet side of the die base body, and is used to detect the state of the wire during threading.

[0011] The controller is used to acquire data detected by the alignment judgment component and control the tensioning and releasing of the wire by the wire clamping mechanism.

[0012] The invention is further configured such that: two rollers rotate inside the drawing groove, the die holder mechanism is located between the two rollers, a wire guide hole is installed on one side of the drawing groove, the die holder mechanism includes a die holder body installed on the inner wall of the drawing groove and two placement slots opened on the top of the die holder body, multiple sets of drawing dies are placed alternately at equal intervals inside the two placement slots, a rubber pad is provided on the inner wall of the placement slot, the drawing die is interference-fitted with the rubber pad, two limiting slots are opened on the top of the die holder body on the opposite side of the two placement slots, multiple wire guide slots are opened at equal intervals on both sides of the die holder body, multiple adapter slots are opened at equal intervals on the side wall of the placement slot, and the multiple adapter slots are correspondingly arranged with the multiple wire guide slots.

[0013] The present invention is further configured such that: each set of the wire clamping mechanism includes a carrier block that slides on a corresponding slide rail, a support platform that slides vertically on the side wall of the carrier block, a guide block that is installed on the support platform, and two pressure rollers that are both vertically arranged on the guide block.

[0014] The invention is further configured such that: a vertical plate is installed on one side of the top of the support platform, an elongated hole is opened on the side wall of the vertical plate, a pressure strip is inserted inside the elongated hole, and the pressure strip slides up and down on the side wall of the card plate after passing through multiple elongated holes.

[0015] The present invention is further configured such that: two brackets are symmetrically installed on the side wall of the card plate, and a spring rod is installed on each of the two brackets, the top of the spring rod being connected to the bottom of the pressure strip.

[0016] The present invention is further configured such that: the adjusting component includes a fixed plate installed on the inner wall of the wire drawing groove, a guide rail installed on the side wall of the fixed plate, a sliding block sliding on the side wall of the guide rail, and a vertical plate connected to the side wall of the sliding block. The bottom of the vertical plate is connected to a base plate, and a guide wheel is installed on one side of the base plate. The guide wheel is located near the wire guide hole. Multiple sets of pressure rollers are arranged at the bottom of the guide rollers, and each set of pressure rollers has a tapered portion on its outer side wall.

[0017] The present invention is further configured such that: a motor is installed on the side wall of the fixing plate, a lead screw is connected to the output end of the motor, a slider is threadedly connected to the outer side wall of the lead screw, and the slider is connected to the moving block.

[0018] The present invention is further configured such that: the alignment judgment component includes a first swing plate hinged to the side wall of the corresponding vertical plate and a pressure plate connected to the side wall of the first swing plate; a first pressure sensor is installed on the side wall of the vertical plate; the pressure plate is in contact with the corresponding first pressure sensor; a connecting rod is connected to the side wall of the first swing plate; a second swing plate is hinged to the side wall of the guide block; an I-beam wheel rotates on the outer side wall of the connecting rod and the top of the second swing plate; a second pressure sensor is installed on the side wall of the guide block; and the end of the second swing plate is in contact with the second pressure sensor.

[0019] The present invention is further configured such that: one of the I-beams has an annular groove on its outer side wall, and the other I-beam has a retaining ring connected to its outer side wall, the outer wall of the retaining ring being inserted into the annular groove.

[0020] The present invention is further configured such that the two I-beam wheels are fitted together, and an inclined portion is provided on one side of each I-beam wheel.

[0021] In summary, this application includes at least one of the following beneficial technical effects: (1) The two pressure rollers of the wire clamping mechanism restrict the wire left and right, and the two I-beam wheels restrict the upper and lower limit space, thus restricting the wire to the position aligned with the center hole of the wire drawing die. This reduces the tilting and deviation of the wire during threading and drawing, reduces abnormal wear on one side of the die hole, and extends the service life of the wire drawing die.

[0022] (2) The wire is supported by the I-beam wheel in the alignment judgment component. When the wire swings, it drives the I-beam wheel to move, which in turn causes the swing plate to push the corresponding pressure plate to move. The corresponding pressure sensor measures the corresponding pressure data. The staff can fine-tune the height of the wire clamping mechanism according to the sensor data to correct the upper and lower deviation of the wire, reduce the error caused by manual positioning, further reduce the wear of the die hole on one side, and improve the alignment accuracy of the wire and the drawing die.

[0023] (3) When the wire enters the drawing groove, the wire is guided by the guide wheel to adjust the wire entry direction to be parallel to the axis of the drawing die center hole. Then, the initial bending deformation of the wire is eliminated by the cooperation of multiple sets of pressure rollers and the tapered part on the outer wall of the pressure roller. The position and height of the guide roller and pressure roller are adjusted by the screw slider structure, eliminating the initial angle deviation and bending deformation of the wire entry. This realizes the pre-alignment of the wire when it enters the wire and reduces the wear of the wire clamping mechanism at the entry end. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the center hole alignment device for a wire drawing die according to the present invention.

[0025] Figure 2 for Figure 1 A top-view structural diagram.

[0026] Figure 3 This is a schematic diagram of the adjustment component structure in this invention.

[0027] Figure 4 This is a schematic diagram of the mating structure of the base plate and pressure roller in this invention.

[0028] Figure 5 This is a schematic diagram of the cooperative structure of the tower wheel, mold base mechanism and auxiliary threading component in this invention.

[0029] Figure 6 This is a schematic diagram of the cooperative structure of the mold base mechanism and the auxiliary insertion component in this invention.

[0030] Figure 7 This is a schematic diagram of the auxiliary fitting component structure in this invention.

[0031] Figure 8 for Figure 7 A partial structural diagram from the other side.

[0032] Figure 9 This is a schematic diagram of the cooperative structure of the wire clamping mechanism and the alignment judgment component in this invention.

[0033] Figure 10 This is a schematic diagram of the two I-beam wheels mating in this invention.

[0034] Figure 11 This is a schematic diagram showing the state of the alloy wire passing through the drawing die in the conventional method.

[0035] Figure 12 This is a schematic diagram showing the state of the alloy wire passing through the drawing die after being finely adjusted using a wire clamping mechanism.

[0036] Explanation of reference numerals in the attached drawings: 1. Main component; 11. Unit; 12. Wire drawing groove; 13. Tower wheel; 14. Wire guide hole; 15. Die base mechanism; 151. Die base body; 152. Placement groove; 153. Wire drawing die; 154. Restriction groove; 155. Wire guide groove; 156. Adaptor groove; 2. Adjustment assembly; 21. Fixing plate; 22. Lead screw; 23. Slider; 24. Guide rail; 25. Moving block; 26. Vertical plate; 27. Base plate; 28. Guide wheel; 29. ​​Pressure wheel; 201. Conical part; 202. Motor; 3. Auxiliary threading assembly; 31. Connecting plate; 32. Adjustment mechanism; 321. Clamping plate; 322. Slide rail; 323. Wire clamping mechanism; 3231. Carrier block; 3232. Support platform; 3233. Guide block; 3234. Pressure roller; 3235. Vertical plate; 3236. Long hole; 324. Groove; 325. Bracket; 326. Spring rod; 327. Pressure strip; 4. Alignment judgment component; 41. First swing plate; 42. Pressure plate; 43. First pressure sensor; 44. Connecting rod; 45. I-beam wheel; 46. Second swing plate; 47. Second pressure sensor; 48. Annular groove; 49. Snap ring; 401. Inclined part. Detailed Implementation

[0037] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0038] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0039] Please see Figures 1-12 The present invention provides the following technical solutions: Example 1, see Figure 1 and Figure 2 A center hole alignment device for a wire drawing die includes a main component 1, which includes a machine unit 11 and a wire drawing groove 12. The wire drawing groove 12 provides space for wire drawing. A guide hole 14 is installed on one side of the wire drawing groove 12. Two rollers 13 rotate inside the wire drawing groove 12. The wire to be drawn enters the wire drawing groove 12 through the guide hole 14 and is wound around the outer wall of the two rollers 13. The wire is conveyed by the rotation of the two rollers 13. A die holder mechanism 15 is installed on the inner wall of the wire drawing groove 12 and is located between the two rollers 13. When the wire is continuously conveyed on the outer wall of the two rollers 13, the wire will pass through the die holder mechanism 15 between the two rollers 13, thereby adjusting the diameter of the wire to achieve the purpose of wire drawing.

[0040] See Figure 5 and Figure 6 The die holder mechanism 15 includes a die holder body 151 installed on the inner wall of the drawing groove 12 and two placement slots 152 opened on the top of the die holder body 151. Multiple sets of drawing dies 153 are equidistantly and alternately placed inside the two placement slots 152. Rubber pads are provided on the inner walls of the placement slots 152, and the drawing dies 153 are interference-fitted with the rubber pads. When the wire passes through the die holder mechanism 15, the operator first passes the wire through the drawing die 153, and then the drawing die 153 is interference-fitted into the placement slot 152. The top of the die holder body 151 is located at... Two placement slots 152 are opposite to each other and have two limiting slots 154. Multiple wire guide slots 155 are equally spaced on both sides of the die base body 151. Multiple adapter slots 156 are equally spaced on the side wall of the placement slots 152. The multiple adapter slots 156 are corresponding to the multiple wire guide slots 155. After the wire drawing die 153 is placed, the wires at both ends of the wire drawing die 153 are placed inside the corresponding wire guide slots 155 and adapter slots 156 for restriction. At the same time, wear-resistant blocks are placed inside the limiting slots 154 to support the conveyed wires.

[0041] Specifically, the two rollers 13 rotate to continuously feed the wire back and forth, so that the wire continuously passes through the corresponding drawing die 153, the wire continuously shrinks in diameter, and finally is sent out from inside the drawing groove 12 for winding and recycling.

[0042] In Example 2, manual positioning cannot guarantee a full fit between the die sleeve end face and the reference surface, which can easily cause the die to tilt at an angle. This results in an initial positioning deviation where the die axis is not parallel to the drawing center line. Furthermore, during the wire tightening process after threading, the wire exerts a lateral tension on the inner wall of the die hole, further amplifying the existing slight tilt and offset, exacerbating the positioning inaccuracy. At the same time, factors such as the bending deformation of the wire itself, tension fluctuations during the drawing process, and asymmetric clamping force of the die sleeve can cause the wire to continuously deviate to one side of the die hole, resulting in abnormal wear in the die hole. As the diameter of the worn side of the die hole expands, the actual direction of the wire will continue to shift towards the unworn side, ultimately forming dynamic misalignment during the drawing process. This creates a vicious cycle of positioning deviation, unilateral wear, and exacerbated misalignment, which not only significantly shortens the service life of the wire drawing die but also seriously affects the dimensional accuracy of the wire drawing and the consistency of the finished product.

[0043] See Figure 5 , Figures 7-11The top of the die base body 151 is equipped with an auxiliary threading component 3. The auxiliary threading component 3 is used to guide the thread during threading. The auxiliary threading component 3 includes a connecting plate 31 and an adjustment mechanism 32 connected to one side of the connecting plate 31. The adjustment mechanism 32 adjusts and restricts the thread at the wire inlet end of the wire drawing die 153 to achieve the effect of aligning the wire drawing die when threading. The connecting plate 31 can be locked onto the die base body 151 by fixing bolts, which is convenient for installation during threading. After threading is completed, the adjustment mechanism 32 is easy to disassemble.

[0044] See Figures 7-11 The adjustment mechanism 32 includes a clamping plate 321 and a slide rail 322 opened on the side wall of the clamping plate 321. Multiple sets of wire clamping mechanisms 323 slide on the side wall of the slide rail 322. Multiple grooves 324 are opened on the side wall of each clamping plate 321. The multiple grooves 324 are corresponding to multiple wire passage grooves 155 and multiple sets of wire clamping mechanisms 323 on one side of the die base body 151. During the wire threading process, multiple sets of wire clamping mechanisms 323 can be locked on the slide rail 322 by locking bolts. The number of wire clamping mechanisms 323 can be installed as needed. After the wire drawing die 153 is placed and the wires at both ends pass through the wire passage grooves 155 and the adapter grooves 156 respectively, the wires pass through the corresponding grooves 324 and the wire clamping mechanisms 323 at the same time. The wires at the wire entry end of the wire drawing die 153 are restricted by the corresponding wire clamping mechanisms 323.

[0045] See Figures 7-11 Each wire clamping mechanism 323 includes a carrier block 3231 that slides on a corresponding slide rail 322. A support platform 3232 slides vertically on the side wall of the carrier block 3231. A guide block 3233 is installed on the support platform 3232. Two pressure rollers 3234 are provided on the guide block 3233. Both pressure rollers 3234 are vertically arranged. When the wire passes through the corresponding wire clamping mechanism 323, the operator first passes the wire between the two pressure rollers 3234. At this time, the two pressure rollers 3234 restrict the left and right swing of the wire, thereby completing the restriction of the wire movement.

[0046] Furthermore, an alignment judgment component 4 is installed on each set of wire clamping mechanisms 323 on the side of the wire inlet end. The alignment judgment component 4 is used to detect the state of the wire during threading and to limit the vertical swing of the wire. A controller is built into the unit 11. The controller is used to acquire the data detected by the alignment judgment component 4, so that the operator can use the controller to determine the position of the wire clamping mechanism 323 that needs to be finely adjusted. That is, when the wire deviates vertically, the operator pushes the guide block 3233 to slide on the support platform 3232, thereby adjusting the height of the two pressure rollers 3234 and the alignment judgment component 4. The wire is then adjusted until the data is adjusted to a qualified state.

[0047] The specific structure of the alignment judgment component 4 is as follows: See Figure 9 and Figure 10 The alignment judgment component 4 includes a first swing plate 41 hinged to the side wall of the corresponding vertical plate 3235 and a pressure plate 42 connected to the side wall of the first swing plate 41. A first pressure sensor 43 is installed on the side wall of the vertical plate 3235, and the pressure plate 42 is in contact with the corresponding first pressure sensor 43. A connecting rod 44 is connected to the side wall of the first swing plate 41, and a second swing plate 46 is hinged to the side wall of the guide block 3233. I-beam wheels 45 rotate on the outer side wall of the connecting rod 44 and the top of the second swing plate 46. The two I-beam wheels 45 and the two pressure rollers 3234 together form a wire passage, which restricts the vertical and horizontal swing of the wire. This passage corresponds to the wire drawing die 153 in the wire threading direction. A second pressure sensor 47 is installed on the side wall of the guide block 3233. The end of the second swing plate 46 is in contact with the second pressure sensor 47. After the operator inserts the wire into the wire clamping mechanism 323 on the wire inlet side, the wire on the wire inlet side is placed between the two corresponding I-beams 45. When the wire swings, the corresponding I-beams 45 are squeezed and displaced. When the upper I-beam 45 is displaced, it drives the connecting rod 44 and the first swing plate 41 to swing. The first swing plate 41 drives the pressure plate 42 to move away from the first pressure sensor 43, and the pressure data of the first pressure sensor 43 will decrease. When the lower I-beam 45 is displaced, the second swing plate 46 swings away from the second pressure sensor 47, and the data of the second pressure sensor 47 decreases. When the two I-beams 45 are reset, the detection data of the first pressure sensor 43 and the second pressure sensor 47 are maintained within the preset data range.

[0048] The oscillation data is detected by the corresponding first pressure sensor 43 or second pressure sensor 47, thereby controlling the timing of the clamping mechanism 323 to restrict or release the wire.

[0049] One of the I-beams 45 has an annular groove 48 on its outer side wall, and the other I-beam 45 has a retaining ring 49 connected to its outer side wall. The outer wall of the retaining ring 49 is inserted into the annular groove 48. The two I-beams 45 fit together, and one side of the I-beam 45 has an inclined portion 401. When the thread is placed between the two I-beams 45, the inclined portion 401 limits the placement position. The worker only needs to separate the two I-beams 45 and then place the thread between the two I-beams 45 through the inclined portion 401. After that, the annular groove 48 and the retaining ring 49 limit the position of the two I-beams 45 when they swing, so as to avoid the two I-beams 45 swinging too much and causing misalignment.

[0050] Specifically, the wire passes between two I-beams 45, and the wire clamping mechanism 323 at the wire inlet restricts the wire. The first pressure sensor 43 and the second pressure sensor 47 respectively acquire the state of the wire. When the data of the first pressure sensor 43 is small and the data of the second pressure sensor 47 is large, it indicates that the wire is biased towards the direction of the second pressure sensor 47. Therefore, the operator adjusts the height of the support platform 3232, thereby adjusting the alignment judgment component 4 to move down as a whole, causing the data of the first pressure sensor 43 to increase and the data of the second pressure sensor 47 to decrease. When both data are in a qualified state, the operator stops adjusting the height of the support platform 3232 and locks it, thereby reducing human error.

[0051] A vertical plate 3235 is installed on one side of the top of the support 3232. The side wall of the vertical plate 3235 has an elongated hole 3236. A pressure strip 327 passes through the elongated hole 3236. The pressure strip 327 slides up and down on the side wall of the clamping plate 321 after passing through multiple elongated holes 3236. Two brackets 325 are symmetrically installed on the side wall of the clamping plate 321. A spring rod 326 is installed on each of the two brackets 325. The top of the spring rod 326 is connected to the bottom of the pressure strip 327. When the staff adjusts the height of the support 3232, the pressure strip 327 slides along the elongated hole 3236, which can guide the sliding of the support 3232.

[0052] In addition, after all the threads have been threaded, the threads are pressed by the two I-beams 45. At this time, the workers only need to press the pressure bar 327. The pressure bar 327 presses one end of the first swing plate 41, causing multiple first swing plates 41 to be pressed and drive the corresponding I-beams 45 to move upward. The two I-beams 45 that restrict the threads are slightly separated. Then, the workers hold the clamping plate 321 and move it into the wire drawing groove 12. This causes the threads to move out along the two I-beams 45 near the inclined part 401. This allows the auxiliary threading component 3 and the alignment judgment component 4 to be quickly separated and disassembled from the threads. After that, the workers can control the tower wheel 13 to rotate to perform the wire drawing operation.

[0053] In the third embodiment, during threading, the amount of bending of the thread entering the mold base mechanism 15 for the first time is relatively large. Therefore, the wear of the corresponding set of thread clamping mechanisms 323 at the thread inlet end is greatly increased.

[0054] To further address the issues of excessive bending of the initial wire feed and severe wear of the wire clamping mechanism 323, an adjustment component 2 is installed inside the wire drawing groove 12. The adjustment component 2 is used to assist in adjusting the wire that first enters the die holder mechanism 15. The specific structure of the adjustment component 2 is as follows: See Figures 1-4The adjusting assembly 2 includes a fixed plate 21 installed on the inner wall of the wire drawing groove 12, a guide rail 24 installed on the side wall of the fixed plate 21, a sliding block 25 sliding on the side wall of the guide rail 24, and a vertical plate 26 connected to the side wall of the sliding block 25. The bottom of the vertical plate 26 is connected to a base plate 27. A guide wheel 28 is installed on one side of the base plate 27. The guide wheel 28 is close to the side of the wire guide hole 14. Multiple sets of pressure rollers 29 are arranged at the bottom of the guide wheel 28. A tapered part 201 is provided on the outer side wall of each set of pressure rollers 29. A motor 202 is installed on the side wall of the fixed plate 21. A lead screw 22 is connected to the output end of the motor 202. A slider 23 is threadedly connected to the outer side wall of the lead screw 22. The slider 23 is connected to the sliding block 25.

[0055] After the wire enters the drawing groove 12 through the guide hole 14 on the side wall of the drawing groove 12, it first enters the working range of the adjustment component 2. It first passes through the guide wheel 28 located near the guide hole 14 to complete the wire entry reversal, adjusting the wire entry direction to be parallel to the axis of the wire groove 155 on the die holder body 151 and the central hole of the drawing die 153, eliminating the initial angle deviation of the wire entry. Then the wire enters between multiple sets of pressure rollers 29 arranged along the entry direction at the bottom of the guide wheel 28. The tapered part 201 on the outer side of each set of pressure rollers 29 forms a circumferential limit and radial constraint on the wire. The multiple sets of pressure rollers 29 roll the wire that is bent and deformed during the first entry in turn to eliminate the bending amount of the wire and ensure the straightness of the wire before entering the die holder mechanism 15. Since the height of the guide wheel 28 is higher than that of the pressure rollers 29, after the guide wheel 28 guides the wire, the pressure rollers 29 still apply downward pressure to the wire, so that the wire remains taut when it is conveyed on the multiple sets of pressure rollers 29.

[0056] When it is necessary to match different positions of the wire drawing die 153 and adjust the wire inlet position, the controller controls the motor 202 to start. The motor 202 drives the lead screw 22 to rotate. The lead screw 22 drives the slider 23 to move along the axis of the lead screw 22 through the thread transmission. This drives the moving block 25, which is fixedly connected to the slider 23, to slide synchronously along the guide rail 24. The moving block 25 drives the guide wheel 28 and multiple sets of pressure rollers 29 to move synchronously through the vertical plate 26 and the bottom plate 27. This precisely adjusts the wire inlet height and horizontal position so that the axis of the wire is completely aligned with the axis of the center hole of the target wire drawing die 153, thus completing the pre-alignment. The wire that has completed the pre-straightening and pre-alignment is then fed into the wire clamping mechanism 323 at the inlet end, and finally passes through the wire groove 155 into the center hole of the wire drawing die 153 for wire drawing.

[0057] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

Claims

1. A center hole alignment device for a wire drawing die, characterized in that: It includes a main component (1), which includes a machine unit (11) and a wire drawing groove (12), and a die base mechanism (15) is installed on the inner wall of the wire drawing groove (12). Adjustment component (2) is used to assist in the adjustment of the wire entering the mold base mechanism (15) for the first time; The auxiliary threading assembly (3) is used to guide the thread during threading. The auxiliary threading assembly (3) includes a connecting plate (31) and an adjustment mechanism (32) connected to one side of the connecting plate (31). The adjustment mechanism (32) includes a clamping plate (321) and a slide rail (322) opened on the side wall of the clamping plate (321). The side wall of the slide rail (322) has multiple sets of wire clamping mechanisms (323) that restrict the left and right swing of the wire. Each clamping plate (321) has multiple grooves (324) on its side wall. The multiple grooves (324) are corresponding to multiple wire passage grooves (155) on one side of the mold base body (151) and multiple sets of wire clamping mechanisms (323). The alignment judgment component (4) is configured in multiple sets and installed on the wire clamping mechanism (323) on the wire inlet side of the mold base body (151) for detecting the state of the wire during threading and restricting the swaying of the wire in the up and down direction; The controller is used to acquire the data detected by the alignment judgment component (4) and control the wire clamping mechanism (323) to tension and release the wire.

2. The center hole alignment device for a wire drawing die according to claim 1, characterized in that: The drawing groove (12) has two rotating rollers (13) inside. The die holder mechanism (15) is located between the two rollers (13). A wire guide hole (14) is installed on one side of the drawing groove (12). The die holder mechanism (15) includes a die holder body (151) installed on the inner wall of the drawing groove (12) and two placement slots (152) opened on the top of the die holder body (151). Multiple sets of drawing dies (153) are placed alternately and equidistantly inside the two placement slots (152). (152) The inner wall is provided with a rubber pad, the wire drawing die (153) is interference fit with the rubber pad, the top of the die base body (151) is located on the side opposite to the two placement slots (152) and two limiting slots (154) are opened, the two sides of the die base body (151) are provided with multiple wire passing slots (155) at equal intervals, the side wall of the placement slot (152) is provided with multiple adapter slots (156) at equal intervals, and the multiple adapter slots (156) are provided in correspondence with the multiple wire passing slots (155).

3. The center hole alignment device for a wire drawing die according to claim 1, characterized in that: Each of the wire clamping mechanisms (323) includes a carrier block (3231) that slides on a corresponding slide rail (322). A support platform (3232) slides vertically on the side wall of the carrier block (3231). A guide block (3233) is installed on the support platform (3232). Two pressure rollers (3234) are provided on the guide block (3233). Both pressure rollers (3234) are vertically arranged.

4. The center hole alignment device for a wire drawing die according to claim 3, characterized in that: A vertical plate (3235) is installed on one side of the top of the support platform (3232). The side wall of the vertical plate (3235) has an elongated hole (3236). A pressure strip (327) passes through the inside of the elongated hole (3236). The pressure strip (327) slides up and down on the side wall of the card plate (321) after passing through multiple elongated holes (3236).

5. The center hole alignment device for a wire drawing die according to claim 4, characterized in that: Two brackets (325) are symmetrically installed on the side wall of the card plate (321). A spring rod (326) is installed on each of the two brackets (325). The top of the spring rod (326) is connected to the bottom of the pressure strip (327).

6. The center hole alignment device for a wire drawing die according to claim 1, characterized in that: The adjustment assembly (2) includes a fixed plate (21) installed on the inner wall of the wire drawing groove (12), a guide rail (24) installed on the side wall of the fixed plate (21), a sliding block (25) sliding on the side wall of the guide rail (24), and a vertical plate (26) connected to the side wall of the sliding block (25). The bottom of the vertical plate (26) is connected to a base plate (27). A guide wheel (28) is installed on one side of the base plate (27). The guide wheel (28) is located on the side close to the wire guide hole (14). Multiple sets of pressure rollers (29) are arranged at the bottom of the guide wheel (28). Each set of pressure rollers (29) has a tapered part (201) on the outer side wall.

7. The center hole alignment device for a wire drawing die according to claim 6, characterized in that: A motor (202) is installed on the side wall of the fixed plate (21). The output end of the motor (202) is connected to a lead screw (22). A slider (23) is threadedly connected to the outer side wall of the lead screw (22). The slider (23) is connected to the moving block (25).

8. The center hole alignment device for a wire drawing die according to claim 4, characterized in that: The alignment judgment component (4) includes a first swing plate (41) hinged to the side wall of the corresponding vertical plate (3235) and a pressure plate (42) connected to the side wall of the first swing plate (41). A first pressure sensor (43) is installed on the side wall of the vertical plate (3235). The pressure plate (42) is in contact with the corresponding first pressure sensor (43). A connecting rod (44) is connected to the side wall of the first swing plate (41). A second swing plate (46) is hinged to the side wall of the guide block (3233). A zigzag wheel (45) rotates on the outer side wall of the connecting rod (44) and the top of the second swing plate (46). A second pressure sensor (47) is installed on the side wall of the guide block (3233). The end of the second swing plate (46) is in contact with the second pressure sensor (47).

9. The center hole alignment device for a wire drawing die according to claim 8, characterized in that: One of the I-beams (45) has an annular groove (48) on its outer side wall, and the other I-beam (45) has a retaining ring (49) connected to its outer side wall. The outer wall of the retaining ring (49) is inserted into the annular groove (48).

10. The center hole alignment device for a wire drawing die according to claim 9, characterized in that: The two I-beams (45) are fitted together, and an inclined portion (401) is provided on one side of the I-beams (45).

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