Copper wire drawing equipment facilitating die threading

Abstract

The application provides a copper wire drawing equipment facilitating mold threading, and belongs to the technical field of drawing equipment. The copper wire drawing equipment comprises a wire feeding wheel, a wire collecting wheel and a drawing mechanism. The drawing mechanism comprises a cone pulley, a mold bracket and a plurality of drawing dies. The diameters of drawing holes of the drawing dies gradually decrease along the copper wire conveying direction. The side of the drawing hole facing the wire feeding direction is sequentially provided with a tapered extrusion hole and a tapered extrusion plug. The center of the tapered extrusion plug is provided with a wire clamping hole. When the tapered extrusion plug approaches the drawing hole, the tapered extrusion plug is extruded by the tapered extrusion hole, so that the diameter of the wire clamping hole is reduced and the copper wire is clamped and pushed into the drawing hole. During the pushing process, the head of the copper wire is clamped and supported by the tapered extrusion plug, so that the straightness of the copper wire can be maintained, the head of the copper wire is prevented from being bent or broken, and the mold threading efficiency of the copper wire is improved.

Description

Technical Field

[0001] This invention belongs to the field of wire drawing equipment technology, specifically referring to a copper wire drawing device that facilitates die threading. Background Technology

[0002] The manufacturing process of copper wire drawing mainly includes: mechanical rough drawing, semi-finished product inspection, semi-finished product fine drawing, finished product inspection, and packaging and warehousing. Among them, the semi-finished product fine drawing process mainly involves further stretching the already thinned copper wire. Therefore, the semi-finished product fine drawing process mainly uses a micro drawing machine with higher precision and stability for wire drawing.

[0003] During the semi-finished product fine drawing process, the diameter of the copper wire has already been thinned by the rough drawing process. This means that the copper wire does not have enough support to maintain its straightness. Furthermore, when threading the wire through the die, the copper wire is inserted into a drawing die with a hole diameter smaller than the diameter of the copper wire. Therefore, when pushing the wire through the die, the head of the copper wire is prone to bending or even breaking, making the threading process quite difficult. Summary of the Invention

[0004] In view of the above situation and to overcome the defects of the prior art, the present invention provides a copper wire drawing device that facilitates die threading, which at least partially solves the above problems.

[0005] The technical solution adopted by this invention is as follows: This invention proposes a copper wire drawing device that facilitates die threading, including a feeding wheel and a take-up wheel, wherein a drawing mechanism for drawing copper wire is provided between the feeding wheel and the take-up wheel, and the drawing mechanism includes:

[0006] Two parallel rollers are used, and the copper wire between the pay-off roller and the take-up roller is wound around the two rollers step by step to form multiple parallel wire drawing paths;

[0007] A mold support is set between the two rollers, and the mold support is provided with a number of drawing molds adapted to the drawing path. Multiple drawing paths pass through the multiple drawing molds one by one, and the diameter of the drawing hole of the drawing mold decreases step by step along the copper wire conveying direction. The copper wire is drawn step by step by the multiple drawing molds.

[0008] The wire drawing hole has a tapered extrusion hole and a tapered guide hole arranged sequentially on the side facing the wire inlet. The tapered extrusion hole is provided with a matching tapered extrusion plug. The center of the tapered extrusion plug has a wire clamping hole. When the tapered extrusion plug approaches the wire drawing hole, the tapered extrusion plug is squeezed by the tapered extrusion hole, which reduces the diameter of the wire clamping hole and clamps the copper wire and pushes it into the wire drawing hole.

[0009] Furthermore, the tapered guide hole is provided with a wire guide bucket, which is configured to move axially along the wire drawing die and push the tapered extrusion plug toward the wire drawing hole along the tapered extrusion hole.

[0010] Furthermore, the wire drawing die is provided with a sealing hoop at one end near the lead wire hopper, and the enlarged end of the lead wire hopper is provided with a limiting flange. The limiting flange slides inside the sealing hoop, and the sealing hoop limits the position of the lead wire hopper.

[0011] Furthermore, the narrowed end of the lead wire hopper is sealed and fixed to the conical extrusion plug.

[0012] Furthermore, a water inlet channel is provided between the lead wire hopper and the conical guide hole. A water inlet pipe for supplying coolant into the water inlet channel is provided on one side of the sealing ring. The conical extrusion plug is provided with multiple water spray holes. One end of the water spray hole is connected to the water inlet channel, and the other end of the water spray hole extends to the narrowed end face of the conical extrusion plug and is connected to the conical extrusion hole, so that the water spray hole can spray coolant into the wire drawing hole.

[0013] Furthermore, the inner diameter of the water spray hole is 0.5-0.8 mm.

[0014] Furthermore, multiple springs are provided between the limiting flange and the wire drawing die. The springs apply elastic pressure to the limiting flange, so that the limiting flange fits and seals against the inner wall of the sealing ring.

[0015] Furthermore, the inner wall of the sealing ring is provided with a rubber sealing gasket.

[0016] Furthermore, a measuring wheel for detecting the wire length is provided between the wire feeding wheel and the pulling mechanism, and the copper wire drawn out by the wire feeding wheel passes through the measuring wheel.

[0017] Furthermore, a guide wheel and a wire guide wheel are provided between the take-up reel and the pulling mechanism. The copper wire drawn out by the pulling mechanism passes through the guide wheel and is then introduced into the wire guide wheel. The wire guide wheel is configured to reciprocate along the axial direction of the take-up reel, so that the copper wire is evenly wound on the take-up reel.

[0018] The beneficial effects achieved by the present invention using the above structure are as follows:

[0019] 1. By setting a tapered extrusion hole and a tapered extrusion plug on the side of the wire drawing hole facing the wire feeding direction, when the tapered extrusion plug approaches the wire drawing hole (i.e., the tapered extrusion plug moves towards the narrowing end of the tapered extrusion hole), the tapered extrusion plug is squeezed by the tapered extrusion hole, which reduces the diameter of the wire clamping hole and clamps the copper wire and pushes it into the wire drawing hole. During the pushing process, the head of the copper wire is clamped and supported by the tapered extrusion plug, which can maintain the straightness of the copper wire, avoid the copper wire head bending or breaking, and improve the wire threading efficiency.

[0020] 2. By setting water spray holes on the conical extrusion plug to spray coolant towards the wire drawing hole, the coolant is sprayed from the water spray holes to the wire drawing hole. At the same time, it plays a role in cooling and lubrication, and uses the impact force of the spray to wash away the metal chips generated during wire drawing. The coolant carries the metal chips and discharges through the gap between the wire clamping hole and the copper wire, preventing the metal chips from being dragged into the wire drawing hole by the copper wire and reducing the probability of wire breakage during the wire drawing process. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a copper wire drawing device that facilitates die threading, as proposed in an embodiment of the present invention.

[0022] Figure 2 This is a schematic diagram of the drawing mechanism in a copper wire drawing device that facilitates die threading, as proposed in an embodiment of the present invention.

[0023] Figure 3 This is a schematic diagram showing the position of the wire drawing die mounted on the die bracket in a copper wire drawing device for easy die threading according to an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of a drawing die in a copper wire drawing device that facilitates die threading, as proposed in an embodiment of the present invention;

[0025] Figure 5 This is a cross-sectional view of the wire drawing die in a copper wire drawing device that facilitates die threading, as proposed in an embodiment of the present invention;

[0026] Figure 6 This is a structural breakdown diagram of the wire drawing die in a copper wire drawing device that facilitates die threading, as proposed in an embodiment of the present invention.

[0027] Figure 7 This is a schematic diagram of the state where the drawing die is not threaded with wire in a copper wire drawing device that facilitates die threading according to an embodiment of the present invention;

[0028] Figure 8 This is a schematic diagram illustrating the state of the copper wire inserted into the wire clamping hole in a copper wire drawing device that facilitates die threading, as proposed in an embodiment of the present invention.

[0029] Figure 9This is a schematic diagram illustrating the state of a conical extrusion plug clamping and pushing copper wire in a copper wire drawing device that facilitates die threading, as proposed in an embodiment of the present invention.

[0030] Figure 10 This is a schematic diagram showing the state of the conical extrusion plug releasing the copper wire in a copper wire drawing device that facilitates die threading, as proposed in an embodiment of the present invention.

[0031] Among them, 1. Pay-off reel; 11. Meter counter reel; 2. Take-up reel; 21. Guide wheel; 22. Wire feeding reel; 3. Tower wheel; 4. Die bracket; 5. Wire drawing die; 501. Wire drawing hole; 502. Conical extrusion hole; 503. Conical guide hole; 504. Water inlet channel; 51. Conical extrusion plug; 511. Wire clamping hole; 512. Water spray hole; 52. Wire guide hopper; 521. Limiting flange; 53. Sealing clamp; 54. Water inlet pipe; 55. Spring.

[0032] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0034] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0035] like Figure 1 As shown, the present invention proposes a copper wire drawing device that facilitates die threading, including a feeding wheel 1, a take-up wheel 2 and a drawing mechanism, wherein the drawing mechanism is disposed between the feeding wheel 1 and the take-up wheel 2.

[0036] Both the pay-off reel 1 and the take-up reel 2 are driven to rotate by external motors, and the motors are connected to an external control unit. The control unit controls the speed of each motor according to the set pay-off and take-up speeds.

[0037] A measuring wheel 11 for detecting the wire length is provided between the wire feeding wheel 1 and the drawing mechanism. The copper wire led out by the wire feeding wheel 1 passes through the measuring wheel 11. During the copper wire conveying process, the measuring wheel 11 is dragged and rotated by the copper wire, and the copper wire passing through the measuring wheel 11 is not stretched. Therefore, the wire length can be calculated by the measuring wheel 11, so as to facilitate the calculation of consumable usage in the later stage.

[0038] The take-up reel 2 is provided with a guide wheel 21 and a wire guide wheel 22 between the take-up reel 2 and the pull-out mechanism. The copper wire drawn out by the pull-out mechanism passes through the guide wheel 21 and is introduced into the wire guide wheel 22. The wire guide wheel 22 is connected to an external electric push rod. Through the reciprocating push of the electric push rod, the wire guide wheel 22 can move back and forth along the axis of the take-up reel 2. As the take-up reel 2 rotates and winds, the copper wire can be evenly wound on the take-up reel 2.

[0039] Combination Figure 2 As shown, the drawing mechanism includes two parallel-axis pulleys 3 and a mold bracket 4 disposed between the two pulleys 3. The pulleys 3 are provided with grooves of progressively increasing diameter. The copper wire between the feed pulley 1 and the take-up pulley 2 is wound around the two pulleys 3. During winding, the wire is wound from the outer periphery of the two pulleys 3, and the winding path is: winding gradually and alternately along the groove with a smaller diameter to the groove with a larger diameter on the two pulleys 3, so that multiple wire drawing paths are formed between the two pulleys 3. Finally, the copper wire is introduced into the smallest groove of one pulley 3 by the guide wheel 21, and after being wound step by step, it is led out from the largest groove of the other pulley 3 to the take-up pulley 2.

[0040] Combination Figure 3 As shown, the mold bracket 4 is provided with a number of drawing molds 5 that are adapted to the drawing path, and the diameter of the drawing hole 501 of the drawing mold 5 decreases step by step along the copper wire conveying direction. Multiple drawing paths pass through multiple drawing molds 5 one by one, and the copper wire is drawn step by step by multiple drawing molds 5.

[0041] Thus, the copper wire raw material is clamped on the pay-off reel 1 and sequentially introduced into the metering reel 11, the drawing mechanism, the guide reel 21, the wire feeding reel 22, and the take-up reel 2. When the copper wire is introduced into the drawing mechanism, it is wound around the two tower reels 3 and wound into the wire grooves with smaller diameters towards larger diameters, so that multiple parallel wire drawing paths are formed between the two tower reels 3. At the same time as winding, the multiple strands of copper wire are respectively inserted into the wire drawing dies 5 corresponding to each level of wire groove, and the diameter of the wire drawing hole 501 of the wire drawing die 5 decreases step by step along the copper wire conveying direction. With the traction of the tower reels 3, the pay-off reel 1 rotates to pay off the wire, and the take-up reel 2 rotates to take off the wire. The copper wire passes through multiple wire drawing dies 5 in sequence and is stretched step by step.

[0042] Combination Figure 5 and Figure 7As shown, the wire drawing hole 501 is provided with a tapered extrusion hole 502 and a tapered guide hole 503 on the side facing the wire inlet direction. The tapered extrusion hole 502 is provided with a tapered extrusion plug 51 that is adapted to it. The center of the tapered extrusion plug 51 is provided with a wire clamping hole 511. The diameter of the wire clamping hole 511 is slightly larger than the wire diameter of the copper wire, so that the head of the copper wire that needs to be threaded through the die can be smoothly inserted into the wire clamping hole 511.

[0043] When the conical extrusion plug 51 approaches the drawing hole 501 (i.e., the conical extrusion plug 51 moves toward the narrowing end of the conical extrusion hole 502), the conical extrusion plug 51 is squeezed by the conical extrusion hole 502, causing the diameter of the clamping hole 511 to shrink and clamping the copper wire, pushing it into the drawing hole 501 (e.g., ...). Figure 8 and Figure 9 (As shown).

[0044] Thus, during the wire threading process, the head of the copper wire is inserted into the wire clamping hole 511 and pushed until it abuts against the end of the wire drawing hole 501 (e.g., Figure 8 (As shown), then the conical extrusion plug 51 is pushed towards the wire drawing hole 501 (i.e., the conical extrusion plug 51 moves towards the narrowing end of the conical extrusion hole 502). At this time, the conical extrusion plug 51 is squeezed by the conical extrusion hole 502, causing the diameter of the wire clamping hole 511 to shrink and clamp the copper wire and push it into the wire drawing hole 501 (as shown). Figure 9 As shown, during the process of pushing the copper wire into the drawing hole 501, the head of the copper wire is held and supported by the conical extrusion plug 51, which can maintain the straightness of the copper wire, avoid bending or breaking the head of the copper wire, and improve the efficiency of the copper wire passing through the die.

[0045] It should be noted that the conical extrusion plugs 51 in different specifications of wire drawing dies 5 are also different. Specifically, the inner diameter of the wire clamping hole 511 of the conical extrusion plug 51 is larger than the diameter of the copper wire passing through the wire drawing die 5.

[0046] In a specific embodiment, the inner diameter of the wire clamping hole 511 of the conical extrusion plug 51 is 0.1-0.2 mm larger than the diameter of the copper wire passing through the drawing die 5, so as to facilitate the insertion of the copper wire and the subsequent discharge of coolant.

[0047] Furthermore, a wire guide hopper 52 is provided inside the tapered guide hole 503, and the enlarged end of the wire guide hopper 52 extends to the outside of the wire drawing die 5. The narrowed end of the wire guide hopper 52 is connected to the tapered extrusion plug 51. The wire guide hopper 52 is configured to move along the axial direction of the wire drawing die 5. Therefore, the operator can push the tapered extrusion plug 51 through the wire guide hopper 52 and make the tapered extrusion plug 51 move closer to the wire drawing hole 501 along the tapered extrusion hole 502 to complete the die threading.

[0048] Combination Figure 4 and Figure 5As shown, the wire drawing die 5 is provided with a sealing ring 53 at one end near the lead wire hopper 52. The enlarged end of the lead wire hopper 52 is provided with a limiting flange 521. The limiting flange 521 slides inside the sealing ring 53, and the sealing ring 53 limits the lead wire hopper 52 to prevent it from falling off. The narrowed end of the lead wire hopper 52 is sealed and fixed with the conical extrusion plug 51, so that the lead wire hopper 52 can not only push the conical extrusion plug 51 toward the wire drawing hole 501, but also pull the conical extrusion plug 51 away from the wire drawing hole 501.

[0049] Thus, after the copper wire passes through the drawing hole 501, the conical extrusion plug 51 is pulled away from the drawing hole 501 by the lead wire hopper 52, causing the conical extrusion plug 51 to return to its original position. At this time, the conical extrusion plug 51 regains its elasticity (as shown in the image). Figure 10 As shown, the inner diameter of the wire clamping hole 511 is restored, and the copper wire is no longer clamped, so that it can be used in the next die-cutting. Since the inner diameter of the wire clamping hole 511 is larger than the diameter of the copper wire, the copper wire can pass smoothly through the wire clamping hole 511 during the copper wire stretching process, avoiding friction between the copper wire and the wire clamping hole 511.

[0050] Combination Figure 5 and Figure 7 As shown, a water inlet channel 504 is provided between the lead wire hopper 52 and the conical guide hole 503. A water inlet pipe 54 for conveying coolant into the water inlet channel 504 is provided on one side of the sealing ring 53. A plurality of water spray holes 512 are provided on the conical extrusion plug 51. One end of the water spray hole 512 is connected to the water inlet channel 504, and the other end of the water spray hole 512 extends to the narrow end face of the conical extrusion plug 51 and is connected to the conical extrusion hole 502, so that the water spray hole 512 can spray coolant into the wire drawing hole 501.

[0051] In a specific embodiment, the water inlet pipe 54 is connected to an external coolant delivery device via a pipeline.

[0052] Thus, after the wire threading is completed, the conical extrusion plug 51 is pulled away from the wire drawing hole 501 by the wire guide 52, so that the conical extrusion plug 51 is reset. At this time, the conical extrusion plug 51 is no longer subjected to extrusion force. Correspondingly, the inner diameter of the wire clamping hole 511 and the water spray hole 512 is restored. Since the inner diameter of the wire clamping hole 511 is larger than the copper wire, a gap for coolant flow can be generated between the wire clamping hole 511 and the copper wire.

[0053] During the wire drawing process, the external coolant delivery equipment delivers coolant into the water inlet channel 504 through the water inlet pipe 54. Under the action of delivery pressure, the coolant is sprayed from the spray hole 512 to the wire drawing hole 501. While playing a role in cooling and lubrication, the impact force of the spray washes away the metal shavings generated during wire drawing. The coolant carries the metal shavings through the gap between the wire clamping hole 511 and the copper wire and is discharged, preventing the metal shavings from being dragged into the wire drawing hole 501 by the copper wire and reducing the probability of wire breakage during the wire drawing process.

[0054] In a specific embodiment, the inner diameter of the water spray hole 512 is 0.5-0.8mm, with a preferred inner diameter of 0.8mm. A larger inner diameter water spray hole 512 can increase the amount of coolant delivered, ensuring the cooling effect on the wire drawing hole 501.

[0055] Combination Figure 7 As shown, multiple springs 55 are provided between the limiting flange 521 and the wire drawing die 5. The springs 55 apply elastic pressure to the limiting flange 521, so that the limiting flange 521 and the inner wall of the sealing ring 53 are fitted and sealed, preventing the coolant pressure in the water inlet channel 504 from being released from the connection between the limiting flange 521 and the sealing ring 53, and maintaining the spray pressure of the water spray hole 512.

[0056] At the same time, the spring 55 applies an elastic thrust to the lead wire hopper 52, enabling the lead wire hopper 52 to pull the conical extrusion plug 51 away from the wire drawing hole 501.

[0057] Furthermore, the inner wall of the sealing ring 53 is provided with a rubber sealing gasket, which is used to seal the connection between the limiting flange 521 and the sealing ring 53, thereby further improving the sealing effect.

[0058] The working principle of this invention is as follows: Copper wire raw material is clamped on the pay-off wheel 1 and sequentially introduced into the metering wheel 11, the drawing mechanism, the guide wheel 21, the wire feeding wheel 22, and the take-up wheel 2. When the copper wire is introduced into the drawing mechanism, it is wound around the two tower wheels 3 and wound into the wire grooves with smaller diameters and larger diameters, so that multiple parallel wire drawing paths are formed between the two tower wheels 3. At the same time as winding, multiple strands of copper wire are respectively inserted into the wire drawing dies 5 corresponding to each level of wire groove. The diameter of the wire drawing hole 501 of the wire drawing die 5 decreases step by step along the copper wire conveying direction. With the traction of the tower wheels 3, the pay-off wheel 1 rotates to pay off the wire, and the take-up wheel 2 rotates to take off the wire. The copper wire passes through multiple wire drawing dies 5 in sequence and is stretched step by step.

[0059] When threading the copper wire through the die, insert the head of the copper wire into the wire clamping hole 511 and push the head of the copper wire until it abuts against the end of the drawing hole 501 (e.g., Figure 8(As shown), then the conical extrusion plug 51 is pushed towards the wire drawing hole 501 through the lead wire hopper 52 (that is, the conical extrusion plug 51 moves towards the narrowing end of the conical extrusion hole 502). At this time, the conical extrusion plug 51 is squeezed by the conical extrusion hole 502, causing the diameter of the wire clamping hole 511 to shrink and clamp the copper wire and push it into the wire drawing hole 501 (as shown). Figure 9 As shown, during the process of pushing the copper wire into the drawing hole 501, the head of the copper wire is held and supported by the conical extrusion plug 51, which can maintain the straightness of the copper wire, avoid bending or breaking the head of the copper wire, and improve the efficiency of the copper wire passing through the die.

[0060] After the copper wire passes through the drawing hole 501, the conical extrusion plug 51 is pulled away from the drawing hole 501 by the lead wire hopper 52, causing the conical extrusion plug 51 to return to its original position. At this time, the conical extrusion plug 51 regains its elasticity (as shown in the image). Figure 10 As shown, the inner diameter of the wire clamping hole 511 is restored, and the copper wire is no longer clamped, so that it can be used in the next die-cutting. Since the inner diameter of the wire clamping hole 511 is larger than the diameter of the copper wire, the copper wire can pass smoothly through the wire clamping hole 511 during the copper wire stretching process, avoiding friction between the copper wire and the wire clamping hole 511.

[0061] During the wire drawing process, the external coolant delivery equipment delivers coolant into the water inlet channel 504 through the water inlet pipe 54. Under the action of delivery pressure, the coolant is sprayed from the spray hole 512 to the wire drawing hole 501. While playing a role in cooling and lubrication, the impact force of the spray washes away the metal shavings generated during wire drawing. The coolant carries the metal shavings through the gap between the wire clamping hole 511 and the copper wire and is discharged, preventing the metal shavings from being dragged into the wire drawing hole 501 by the copper wire and reducing the probability of wire breakage during the wire drawing process.

[0062] In summary, by providing a tapered extrusion hole 502 and a tapered extrusion plug 51 on the side of the wire drawing hole 501 facing the wire feeding direction, when the tapered extrusion plug 51 approaches the wire drawing hole 501 (i.e., the tapered extrusion plug 51 moves towards the narrowing end of the tapered extrusion hole 502), the tapered extrusion plug 51 is squeezed by the tapered extrusion hole 502, causing the diameter of the wire clamping hole 511 to shrink and clamp the copper wire and push it into the wire drawing hole 501. During the pushing process, the head of the copper wire is clamped and supported by the tapered extrusion plug 51, which can maintain the straightness of the copper wire, avoid the copper wire head bending or breaking, and improve the wire threading efficiency.

[0063] By setting a water spray hole 512 on the conical extrusion plug 51 to spray coolant toward the wire drawing hole 501, the coolant is sprayed from the water spray hole 512 to the wire drawing hole 501. At the same time, it plays a role in cooling and lubrication, and uses the impact force of the spray to wash away the metal chips generated during wire drawing. The coolant carries the metal chips and is discharged through the gap between the wire clamping hole 511 and the copper wire, which prevents the metal chips from being dragged into the wire drawing hole 501 by the copper wire and reduces the probability of wire breakage during the wire drawing process.

[0064] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0065] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A copper wire drawing device that facilitates die threading, characterized in that, It includes a pay-off reel (1) and a take-up reel (2), and a drawing mechanism for drawing copper wire is provided between the pay-off reel (1) and the take-up reel (2). The drawing mechanism includes: Two parallel-axis pulleys (3) are used to alternately wind copper wires between the pay-off pulley (1) and the take-up pulley (2) on the two pulleys (3), forming multiple parallel wire drawing paths. A mold bracket (4) is set between two of the tower wheels (3), and the mold bracket (4) is provided with a number of drawing molds (5) that are adapted to the drawing path. Multiple drawing paths pass through the multiple drawing molds (5) one by one, and the diameter of the drawing hole (501) of the drawing mold (5) decreases step by step along the copper wire conveying direction. The copper wire is drawn step by step by the multiple drawing molds (5). Among them, the wire drawing hole (501) is provided with a tapered extrusion hole (502) and a tapered guide hole (503) on the side facing the wire receiving direction. The tapered extrusion hole (502) is provided with a tapered extrusion plug (51) that is adapted to it. The tapered extrusion plug (51) has a wire clamping hole (511) in the center. When the tapered extrusion plug (51) approaches the wire drawing hole (501), the tapered extrusion plug (51) is squeezed by the tapered extrusion hole (502). The diameter of the wire clamping hole (511) is larger than the diameter of the copper wire. After the conical extrusion plug (51) is extruded by the conical extrusion hole (502), the diameter of the wire clamping hole (511) is reduced and the copper wire is clamped and pushed into the wire drawing hole (501).

2. The copper wire drawing equipment for easy die threading according to claim 1, characterized in that: The tapered guide hole (503) is provided with a wire guide bucket (52), which is configured to move along the axial direction of the wire drawing die (5) and push the tapered extrusion plug (51) along the tapered extrusion hole (502) toward the wire drawing hole (501).

3. The copper wire drawing equipment for easy die threading according to claim 2, characterized in that: The wire drawing die (5) is provided with a sealing ring (53) at one end near the lead wire hopper (52), and the enlarged end of the lead wire hopper (52) is provided with a limiting flange (521). The limiting flange (521) slides inside the sealing ring (53) and the sealing ring (53) limits the lead wire hopper (52).

4. The copper wire drawing equipment for easy die threading according to claim 3, characterized in that: The narrowed end of the lead wire hopper (52) is sealed and fixed to the conical extrusion plug (51).

5. The copper wire drawing equipment for easy die threading according to claim 3, characterized in that: A water inlet channel (504) is provided between the lead wire hopper (52) and the conical guide hole (503). A water inlet pipe (54) is provided on one side of the sealing ring (53) to deliver coolant into the water inlet channel (504). A plurality of water spray holes (512) are provided on the conical extrusion plug (51). One end of the water spray hole (512) is connected to the water inlet channel (504), and the other end of the water spray hole (512) extends to the narrow end face of the conical extrusion plug (51) and is connected to the conical extrusion hole (502), so that the water spray hole (512) can spray coolant into the wire drawing hole (501).

6. The copper wire drawing equipment for easy die threading according to claim 5, characterized in that: The inner diameter of the water spray hole (512) is 0.5-0.8 mm.

7. The copper wire drawing equipment for easy die threading according to claim 3, characterized in that: Multiple springs (55) are provided between the limiting flange (521) and the wire drawing die (5). The springs (55) apply elastic pressure to the limiting flange (521) so that the limiting flange (521) fits and seals against the inner wall of the sealing band (53).

8. The copper wire drawing equipment for easy die threading according to claim 3, characterized in that: The inner wall of the sealing ring (53) is provided with a rubber sealing gasket.

9. The copper wire drawing equipment for easy die threading according to claim 1, characterized in that: A measuring wheel (11) for detecting the length of wire is provided between the wire feeding wheel (1) and the pulling mechanism, and the copper wire drawn out by the wire feeding wheel (1) passes through the measuring wheel (11).

10. The copper wire drawing equipment for easy die threading according to claim 1, characterized in that: The take-up reel (2) and the pull-out mechanism are provided with a guide wheel (21) and a wire guide wheel (22). The copper wire drawn out by the pull-out mechanism passes through the guide wheel (21) and is then introduced into the wire guide wheel (22). The wire guide wheel (22) is configured to be able to move back and forth along the axial direction of the take-up reel (2) so that the copper wire is evenly wound on the take-up reel (2).

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