Processing equipment for superfine steel wires

Abstract

The invention relates to the technical field of metal wire drawing, in particular to superfine steel wire machining equipment which comprises a rack and a wire drawing device. A main rolling wheel and an auxiliary rolling wheel which are provided with horizontal axes and are distributed in parallel are rotationally mounted on the rack; the wire drawing device is arranged between the main rolling wheel and the auxiliary rolling wheel and comprises a mounting frame and two wire drawing modules arranged on the upper side and the lower side of the mounting frame correspondingly, and each wire drawing module comprises a plurality of wire drawing dies distributed in the axial direction of the main rolling wheel at intervals; the center of each wire-drawing die is provided with a conical center hole allowing a steel wire to penetrate through, and the steel wire is wound between the main winding wheel and the auxiliary winding wheel in a reciprocating mode and sequentially passes through the wire-drawing dies located on the upper side and the lower side of the mounting frame, so that the main winding wheel and the auxiliary winding wheel share the pulling force on the steel wire; the spiral groove communicated with the center hole is formed outside the wire drawing die, so that the steel wire enters the center hole from the spiral groove when being tensioned, the threading difficulty is reduced, and the threading efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of metal wire drawing, in particular to a processing device for ultra-fine steel wire. Background Art

[0002] The processing of ultrafine steel wire is a process that requires high precision and high technical requirements. It needs to go through a series of drawing, heat treatment and surface treatment processes to obtain the required specifications and performance. Among them, the drawing process is usually divided into multiple stages. In each stage, dies with different apertures are used to reduce the diameter of the steel wire. Drawing is performed by cold drawing to improve the strength of the steel wire and maintain dimensional accuracy. When the steel wire passes through the drawing die, due to the small aperture of the drawing die, it is difficult for the steel wire to pass directly through. The end of the steel wire needs to be polished to make it thinner. After the end passes through the drawing die, it is manually pulled to pass through the drawing die with enough margin so that it can be wound on the reel and passed through the drawing die of the next specification. This perforation process is relatively complicated and laborious, affecting the installation efficiency of the steel wire. Summary of the Invention

[0003] The present invention provides an ultra-fine steel wire processing device to solve the problem that the steel wire threading of the existing wire drawing device is relatively laborious.

[0004] The processing equipment of the ultra-fine steel wire of the present invention adopts the following technical solution: A processing device for ultra-fine steel wire comprises a frame and a wire drawing device; a main reel and an auxiliary reel are rotatably mounted on the frame, with their axes being horizontal and parallel to each other; annular grooves are provided on the main reel and the auxiliary reel, which are distributed in sequence along their axial directions and whose diameters increase in sequence; the wire drawing device is arranged between the main reel and the auxiliary reel, comprising a mounting frame and two wire drawing die sets respectively arranged on the upper and lower sides of the mounting frame, each wire drawing die set comprising a plurality of wire drawing dies spaced apart along the axial direction of the main reel; the mounting frame limits the rotation of the wire drawing die; a conical center hole is provided in the center of the wire drawing die for the wire to pass through, and the diameter of the center hole on the wire inlet side is larger than that on the wire outlet side; the wire is wound around the auxiliary reel After coming out, it passes through the wire drawing die located on the upper side of the mounting frame and is wound on the main reel, and then it comes out from the main reel, passes through the wire drawing die located on the lower side of the mounting frame and is wound on the next annular groove with a larger diameter of the auxiliary reel; and on the annular path of the steel wire winding, the position where the steel wire passes through the wire drawing die protrudes from the annular grooves of the main reel and the auxiliary reel corresponding to its two sides; a spiral groove is provided on the outer peripheral wall of the wire drawing die, and the spiral groove is spirally arranged around the center hole and its two ends respectively pass through the two end faces of the wire drawing die, the spiral groove is connected with the center hole, and the width of the spiral groove decreases successively from the outer peripheral wall of the wire drawing die to the center hole, and the end close to the center hole is consistent with the size of the center hole.

[0005] Optionally, along the direction in which the diameter of the annular groove on the main reel or the auxiliary reel increases successively, the positions of the multiple drawing dies located on the upper side of the mounting frame rise successively, and the positions of the multiple drawing dies located on the lower side of the mounting frame lower successively.

[0006] Optionally, a mounting groove for installing the wire drawing die is provided on the mounting frame, and a guide groove for the steel wire to pass through and perpendicular to the mounting groove is provided at each corresponding wire drawing die; the mounting groove extends along the axial direction of the main reel and is located in the middle of multiple guide grooves; the steel wire passes along the guide groove before entering the wire drawing die and after passing through the wire drawing die, and the guide groove is coaxial with the center hole of the corresponding wire drawing die, and limits the axial movement of the steel wire on the main reel or the auxiliary reel.

[0007] Optionally, the center hole of the drawing die is arc-shaped, and the middle of the center hole of the drawing die located on the upper side of the mounting frame is higher than the two ends, and the middle of the center hole of the drawing die located on the lower side of the mounting frame is lower than the two ends.

[0008] Optionally, at least one anti-rotation groove is provided on the outer peripheral wall of the wire drawing die; a group of limiting rollers are provided in the installation groove corresponding to each wire drawing die, and the limiting rollers cooperate with the anti-rotation groove to limit the rotation of the wire drawing die.

[0009] Optionally, both ends of the central hole of the wire drawing die are provided with tapered guiding surfaces with the larger end facing outwards.

[0010] Optionally, the angle of the spiral groove in the circumferential direction of the center hole is an acute angle.

[0011] Optionally, the frame is further provided with a pay-off wheel and a take-up wheel. The pay-off wheel is used to convey the steel wire to the auxiliary reel, and the take-up wheel is used to reel in the stretched steel wire.

[0012] Optionally, the take-up wheel is parallel to the axis of the main reel; at least one guide wheel is also provided on the frame, at least one guide wheel is located on the wire feeding side of the take-up wheel, and is parallel to the axis of the take-up wheel, and can move back and forth along its own axis, for guiding the stretched steel wire to circulate back and forth around the take-up wheel.

[0013] Optionally, a winding wheel is also provided on the frame, and the winding wheel axis is vertically and rotatably installed on the frame. The steel wire extending from the annular groove with the largest diameter on the main reel is wound around the winding wheel for one circle and then reeled onto the take-up wheel through the guide wheel.

[0014] The beneficial effect of the present invention is that the processing equipment for ultrafine steel wire of the present invention opens a spiral groove connected to the center hole outside the wire drawing die, so that the steel wire enters the center hole from the spiral groove when tensioned, reducing the difficulty of threading and improving the threading efficiency.

[0015] Furthermore, by arranging a wire drawing module on the upper and lower sides of the mounting frame respectively, the steel wire is wound back and forth between the main reel and the auxiliary reel, and the main reel and the auxiliary reel share the pulling force on the steel wire, thereby improving the overall stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of an ultra-fine steel wire processing device of the present invention; Figure 2 This is a front view of the overall structure of an embodiment of an ultra-fine steel wire processing device of the present invention; Figure 3 A schematic cross-sectional view of a wire drawing device in an embodiment of an ultra-fine steel wire processing apparatus of the present invention; Figure 4 This is a structural schematic diagram of a wire drawing die in an embodiment of an ultra-fine steel wire processing device of the present invention; Figure 5 A side view of a wire drawing die in an embodiment of an ultra-fine steel wire processing device of the present invention; Figure 6 for Figure 5 Schematic diagram of the cross-section in the AA direction.

[0018] In the figure: 100, frame; 110, main reel; 120, auxiliary reel; 130, cooling device; 140, pay-off reel; 150, take-up reel; 160, guide wheel; 170, winding reel; 200, wire drawing device; 210, mounting frame; 220, wire drawing die; 221, center hole; 222, spiral groove; 223, limiting roller; 224, anti-rotation groove; 230, mounting groove; 240, guide groove; 300, steel wire. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] An embodiment of an ultra-fine steel wire processing device of the present invention is as follows Figures 1 to 6As shown, it includes a frame 100 and a wire drawing device 200.

[0021] A main reel 110 and a secondary reel 120 are rotatably mounted on the frame 100, with their axes arranged parallel and horizontal. Both reels 110 and 120 are provided with annular grooves extending in sequence along their axes and increasing in diameter. They are driven by separate motors or by a single motor via a worm gear or rack-and-pinion mechanism for synchronous rotation.

[0022] The wire drawing device 200 is positioned between the main reel 110 and the auxiliary reel 120 and includes a mounting frame 210 and two drawing die sets, one on each side of the mounting frame 210. Each drawing die set includes multiple drawing dies 220 spaced axially along the main reel 110. The mounting frame 210 constrains the rotation of the drawing dies 220. The drawing dies 220 have a tapered center hole 221 in the center for the steel wire 300 to pass through. The diameter of the center hole 221 on the inlet side is larger than the diameter on the outlet side. After winding off the auxiliary reel 120, the steel wire 300 passes through the drawing die 220 located above the mounting frame 210 and is wound around the main reel 110. It then winds off the main reel 110, passes through the drawing die 220 located below the mounting frame 210, and is wound around the next larger annular groove on the auxiliary reel 120. Furthermore, on the annular path along which the steel wire 300 is wound, the position at which the steel wire 300 passes through the drawing die 220 protrudes above the annular grooves of the corresponding primary and secondary reels 110 and 120 on either side thereof. That is, the center hole 221 of the drawing die 220 located on the upper side of the mounting frame 210 is higher than the annular grooves of the corresponding primary and secondary reels 110 and 120 on either side thereof, and the center hole 221 of the drawing die 220 located on the lower side of the mounting frame 210 is lower than the annular grooves of the corresponding primary and secondary reels 110 and 120 on either side thereof. A spiral groove 222 is formed on the outer peripheral wall of the drawing die 220. The spiral groove 222 is spirally arranged circumferentially around the center hole 221, and its two ends respectively penetrate the two end surfaces of the drawing die 220. The spiral groove 222 is connected to the center hole 221, and the width of the spiral groove 222 decreases from the outer peripheral wall of the drawing die 220 to the center hole 221, and the end closest to the center hole 221 is the same size as the center hole 221.

[0023] Before wire drawing, the steel wire 300 needs to be wound back and forth on the main reel 110 and the auxiliary reel 120 , and pass through the wire drawing die 220 between the main reel 110 and the auxiliary reel 120 in sequence. When the steel wire 300 passes through the wire drawing die 220, the steel wire 300 can pass through the spiral groove 222 of the wire drawing die 220. Since the end of the spiral groove 222 connected to the outer peripheral wall of the wire drawing die 220 is wider, the steel wire 300 can enter easily. After the end of the steel wire 300 extending from the spiral groove 222 is wound around the main reel 110 or the auxiliary reel 120, the main reel 110 or the auxiliary reel 120 is rotated. Since the position where the steel wire 300 passes through the wire drawing die 220 on the annular path of the steel wire 300 is protruding from the annular grooves of the main reel 110 and the auxiliary reel 120 corresponding on both sides thereof, the steel wire 300 is tensioned and pulled toward the end of the spiral groove 222 close to the center hole 221 until the steel wire 300 is pulled into the center hole 221. The main reel 110 or the auxiliary reel 120 continues to rotate, so that the steel wire 300 is drawn thinner by the wire drawing die 220. When passing through the next drawing die 220, the section drawn thin by the previous drawing die 220 is loaded into the spiral groove 222 of the next drawing die 220, and the above operation is repeated to make the steel wire 300 fit into the center hole 221 of the next drawing die 220. Since the spiral groove 222 is arranged in a spiral direction around the center hole 221, the end connected to the center hole 221 is a spiral line around the circumference of the center hole 221. The position where the center hole 221 connects with the spiral groove 222 in its circumferential direction is not along the axial direction of the center hole 221. Therefore, when the steel wire 300 passes through the center hole 221, the stretching of the steel wire 300 will not be affected by the position where the center hole 221 connects with the spiral groove 222. The steel wire 300 is wound back and forth between the auxiliary reel 120 and the main reel 110. The wire drawing die 220 located on the upper side of the mounting frame 210 is subjected to a pulling force directed from the auxiliary reel 120 to the main reel 110, and the wire drawing die 220 located on the lower side of the mounting frame 210 is subjected to a pulling force directed from the main reel 110 to the auxiliary reel 120. While the mounting frame 210 is subjected to a relatively balanced force, the pulling forces borne by the main reel 110 and the auxiliary reel 120 are also relatively balanced, that is, the pulling force of the steel wire 300 is distributed to the main reel 110 and the auxiliary reel 120. Compared with the method in the prior art where the main reel 110 is subjected to unidirectional pulling force when rotating to stretch the steel wire 300, the overall stability of the wire drawing device 200 can be further improved.

[0024] A spiral groove 222 communicating with the center hole 221 is provided outside the wire drawing die 220 , so that the steel wire 300 enters the center hole 221 from the spiral groove 222 when tensioned, thereby reducing the difficulty of threading.

[0025] Furthermore, by arranging a wire drawing module on the upper and lower sides of the mounting frame 210 respectively, the steel wire 300 is wound back and forth between the main reel 110 and the auxiliary reel 120, and the main reel 110 and the auxiliary reel 120 share the pulling force on the steel wire 300, thereby improving the overall stability of the device.

[0026] In this embodiment, along the direction in which the diameter of the annular groove on the main reel 110 or the auxiliary reel 120 increases successively, the positions of the multiple drawing dies 220 located on the upper side of the mounting frame 210 are successively raised, and the positions of the multiple drawing dies 220 located on the lower side of the mounting frame 210 are successively lowered to adapt to the annular groove with gradually increasing diameter.

[0027] In this embodiment, a mounting slot 230 for mounting the wire drawing die 220 is formed on the mounting frame 210, and a guide slot 240 is formed at each corresponding wire drawing die 220 for allowing the steel wire 300 to pass through and perpendicular to the mounting slot 230. The plurality of guide slots 240 are sequentially spaced along the axial direction of the main reel 110. The mounting slot 230 extends along the axial direction of the main reel 110 and is located in the middle of the plurality of guide slots 240, and is used to limit the movement of the wire drawing die 220 along the extension direction of the steel wire 300. The steel wire 300 passes along the guide slot 240 before entering the wire drawing die 220 and after passing through the wire drawing die 220. The guide slot 240 is coaxial with the center hole 221 of the corresponding wire drawing die 220 and limits the axial movement of the steel wire 300 on the main reel 110 or the auxiliary reel 120.

[0028] In this embodiment, the center hole 221 of the drawing die 220 is arc-shaped, and the middle part of the center hole 221 of the drawing die 220 located on the upper side of the mounting frame 210 is higher than the two ends, and the middle part of the center hole 221 of the drawing die 220 located on the lower side of the mounting frame 210 is lower than the two ends, so as to keep the steel wire 300 in the center of the drawing die 220 when the steel wire 300 is tensioned.

[0029] In this embodiment, at least one anti-rotation groove 224 is further provided on the outer peripheral wall of the drawing die 220; a group of limiting rollers 223 are provided in the installation groove 230 corresponding to each drawing die 220, and the limiting rollers 223 cooperate with the anti-rotation groove 224 to limit the rotation of the drawing die 220.

[0030] In this embodiment, both ends of the central hole 221 of the wire drawing die 220 are provided with tapered guiding surfaces with the larger end facing outwards.

[0031] In this embodiment, the angle of the spiral groove 222 in the circumferential direction of the central hole 221 is an acute angle.

[0032] In this embodiment, a cooling device 130 is further provided on the frame 100. The cooling device 130 is used to cool the steel wire 300 in each annular groove on the main reel 110. The cooling device 130 includes a liquid supply pump and a cooling pipe. The cooling pipe is parallel to the axis of the main reel 110 and is located above the main reel 110. The cooling pipe is used to communicate with an external coolant tank. The cooling pipe has a liquid outlet corresponding to each annular groove. The liquid supply pump pumps coolant into the cooling pipe, so that the coolant cools the steel wire 300 in each annular groove.

[0033] In this embodiment, a pay-off wheel 140 and a take-up wheel 150 are further provided on the frame 100. The pay-off wheel 140 is used to convey the steel wire 300 to the auxiliary reel 120, and the take-up wheel 150 is used to reel in the stretched steel wire 300.

[0034] In this embodiment, the take-up reel 150 is parallel to the axis of the main reel 110; at least one guide wheel 160 is also provided on the frame 100. The at least one guide wheel 160 is located on the wire feeding side of the take-up reel 150 and is parallel to the axis of the take-up reel 150. The guide wheel 160 can reciprocate along its own axis to guide the stretched wire 300 to be cyclically wound around the take-up reel 150. Specifically, a lead screw is rotatably mounted on the frame 100, and a base is slidably mounted on the base. The base is threadedly engaged with the lead screw, and the guide wheel 160 is mounted on the base. The reciprocating rotation of the lead screw drives the reciprocating movement of the base, which in turn drives the reciprocating movement of the guide wheel 160.

[0035] In this embodiment, a winding wheel 170 is also provided on the frame 100. The axis of the winding wheel 170 is vertically and rotatably installed on the frame 100. The steel wire 300 extending from the annular groove with the largest diameter on the main reel 110 is wound around the winding wheel 170 for one circle and then reeled into the take-up wheel 150 through the guide wheel 160.

[0036] In this embodiment, the mounting frame 210 is a split structure, and the components are detachably connected.

[0037] When the ultra-fine steel wire processing equipment of the present invention is in use, the steel wire 300 is pulled out from the pay-off wheel 140, and is sequentially wound around or passed through the annular groove on the auxiliary reel 120, the drawing die 220 located on the upper side of the mounting frame 210, the annular groove on the main reel 110, the drawing die 220 located on the lower side of the mounting frame 210, and then wound around the next annular groove with a larger diameter on the auxiliary reel 120, and when it is wound around the main reel 110 next time, it is wound around the next annular groove with a larger diameter on the main reel 110. When the steel wire 300 passes through the wire drawing die 220, the steel wire 300 can pass through the spiral groove 222 of the wire drawing die 220. Since the end of the spiral groove 222 connected to the outer peripheral wall of the wire drawing die 220 is wider, the steel wire 300 can enter easily. After the end of the steel wire 300 extending from the spiral groove 222 is wound around the main reel 110 or the auxiliary reel 120, the main reel 110 or the auxiliary reel 120 is rotated. Since the position where the steel wire 300 passes through the wire drawing die 220 on the annular path of the steel wire 300 is protruding from the annular grooves of the main reel 110 and the auxiliary reel 120 corresponding on both sides thereof, the steel wire 300 is tensioned and pulled toward the end of the spiral groove 222 close to the center hole 221 until the steel wire 300 is pulled into the center hole 221. The main reel 110 or the auxiliary reel 120 continues to rotate, so that the steel wire 300 is drawn thinner by the wire drawing die 220. When passing through the next drawing die 220, the section of wire 300 that was stretched thin by the previous drawing die 220 is loaded into the spiral groove 222 of the next drawing die 220. The above operation is repeated until the steel wire 300 is matched with the center hole 221 of the next drawing die 220. The steel wire 300 finally extends from the annular groove with the largest diameter on the main reel 110, is wound once around the winding reel 170, and is guided by the guide wheel 160 before being finally wound onto the take-up reel 150. During the drawing process, the main reel 110 and the auxiliary reel 120 rotate in the same direction. At the same time, the take-up reel 150 rotates and the guide wheel 160 reciprocates, winding the stretched steel wire 300 onto the take-up reel 150.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An ultra-fine steel wire processing device, characterized by: Including frame and wire drawing device; A main reel and an auxiliary reel are rotatably mounted on the frame, with their axes being horizontal and parallel to each other. Both the main reel and the auxiliary reel are provided with annular grooves which are sequentially distributed along their axes and have increasing diameters. The wire drawing device is arranged between the main reel and the auxiliary reel, including a mounting frame and two wire drawing die groups respectively arranged on the upper and lower sides of the mounting frame, each wire drawing die group includes a plurality of wire drawing dies distributed along the axial direction of the main reel; the mounting frame limits the rotation of the wire drawing die; a conical center hole is opened in the center of the wire drawing die for the steel wire to pass through, and the diameter of the center hole on the wire inlet side is larger than the diameter on the wire outlet side; after the steel wire is wound out from the auxiliary reel, it passes through the wire drawing die on the upper side of the mounting frame and is wound around the main reel, and then it is wound out from the main reel and passes through the wire drawing die on the lower side of the mounting frame. The wire drawing die is wound behind the secondary reel in an annular groove with a larger diameter; and on the annular path of the steel wire winding, the position where the steel wire passes through the wire drawing die protrudes from the annular grooves of the main reel and the secondary reel on both sides thereof; a spiral groove is provided on the outer peripheral wall of the wire drawing die, and the spiral groove is spirally arranged around the center hole and the two ends respectively pass through the two end faces of the wire drawing die, the spiral groove is connected with the center hole, and the width of the spiral groove decreases successively from the outer peripheral wall of the wire drawing die to the center hole, and the end close to the center hole is consistent with the size of the center hole.

2. The ultra-fine steel wire processing equipment according to claim 1, characterized in that: Along the direction in which the diameter of the annular groove on the main reel or the auxiliary reel increases successively, the positions of the multiple drawing dies located on the upper side of the mounting frame rise successively, and the positions of the multiple drawing dies located on the lower side of the mounting frame fall successively.

3. The ultra-fine steel wire processing equipment according to claim 1, characterized in that: A mounting groove for installing the wire drawing die is provided on the mounting frame, and a guide groove for the steel wire to pass through and perpendicular to the mounting groove is provided at each corresponding wire drawing die; the mounting groove extends along the axial direction of the main reel and is located in the middle of multiple guide grooves; the steel wire passes along the guide groove before entering the wire drawing die and after passing through the wire drawing die, and the guide groove is coaxial with the center hole of the corresponding wire drawing die, and limits the axial movement of the steel wire on the main reel or the auxiliary reel.

4. The ultra-fine steel wire processing equipment according to claim 3, characterized in that: The center hole of the wire drawing die is arc-shaped, and the middle of the center hole of the wire drawing die located on the upper side of the mounting frame is higher than the two ends, and the middle of the center hole of the wire drawing die located on the lower side of the mounting frame is lower than the two ends.

5. The ultra-fine steel wire processing equipment according to claim 3, characterized in that: At least one anti-rotation groove is also provided on the outer peripheral wall of the wire drawing die; a group of limiting rollers are provided in the installation groove corresponding to each wire drawing die, and the limiting rollers cooperate with the anti-rotation groove to limit the rotation of the wire drawing die.

6. The ultra-fine steel wire processing equipment according to claim 1, characterized in that: Both ends of the central hole of the wire drawing die are provided with tapered guiding surfaces with the larger end facing outwards.

7. The ultra-fine steel wire processing equipment according to claim 1, characterized in that: The angle of the spiral groove in the circumferential direction of the center hole is an acute angle.

8. The ultra-fine steel wire processing equipment according to claim 1, characterized in that: The frame is also provided with a pay-off wheel and a take-up wheel. The pay-off wheel is used to convey the steel wire to the auxiliary reel, and the take-up wheel is used to reel in the stretched steel wire.

9. The ultra-fine steel wire processing equipment according to claim 8, characterized in that: The take-up wheel is parallel to the axis of the main reel; at least one guide wheel is also provided on the frame, at least one guide wheel is located on the wire feeding side of the take-up wheel, and is parallel to the axis of the take-up wheel, and can move back and forth along its own axis, and is used to guide the stretched steel wire to circulate back and forth around the take-up wheel.

10. The ultra-fine steel wire processing equipment according to claim 9, characterized in that: The frame is also provided with a winding wheel, the axis of which is vertically and rotatably mounted on the frame. The steel wire extending from the annular groove with the largest diameter on the main reel is wound around the winding wheel once and then reeled onto the take-up wheel through the guide wheel.

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