High-strength tungsten alloy ultra-fine wire drawing device

Abstract

The invention relates to a high-strength tungsten alloy ultra-fine wire drawing device, comprising a traction structure and a drawing structure, wherein the traction structure comprises an inner winding piston, an outer electromagnetic coil, a linear guide rail and a clamp; the drawing structure comprises a clamping jaw, an electromagnetic valve and an eye mold; the inner winding piston and the outer electromagnetic coil are both sleeved on the linear guide rail, and the outer electromagnetic coil is sleeved on the outside of the inner winding piston, and the outer electromagnetic coil is fixed on the linear guide rail through a clamp, and the inner winding piston is provided with an inner electromagnetic coil; the eye mold is arranged on one side of the linear guide rail, the clamping jaw is fixedly installed on the inner winding piston, and the clamping jaw is connected to the electromagnetic valve, the tungsten wire is fixedly clamped by the clamping jaw after passing through the eye mold, and the opening and closing of the clamping jaw is controlled by the electromagnetic valve. The purpose of the invention is to provide a high-strength tungsten alloy ultra-fine wire drawing device, aiming at the existing technology of online heating tower wheel type slip differential drawing, and solving the defect caused by the sliding friction between the tower wheel and the metal filament in the tower wheel type slip differential drawing.

Description

Technical Field

[0001] The patent of this invention relates to the technical field of tungsten alloy ultra-fine wire preparation, specifically, to a high-strength tungsten alloy ultra-fine wire drawing device. Background Art

[0002] High-strength metal wire is mainly used in mechanical wire rope, cutting wire, reinforced wire and other fields. High-strength metal wire mainly includes high-carbon steel wire, tungsten wire, etc., but the tensile strength of existing high-strength metal wire is still relatively low (for example, the tensile strength of high-strength metal wire with a diameter of 0.035mm is generally below 4800MPa), and the strength cannot meet the needs of micro wire rope, diamond cutting, industrial bend-resistant wire harness and other fields, which brings bottlenecks to the application in related fields.

[0003] High-strength tungsten alloy ultra-fine wire is widely used in the manufacture of anti-cut fabrics, single crystal silicon cutting wire, exposure filament, precision screen printing and other industries. High-strength tungsten alloy ultra-fine wire can significantly improve the mechanical properties of wire saws. While increasing the pulling limit, it can also reduce the probability of wire breakage during pulling, thereby obtaining a wire saw product for silicon wafer cutting with excellent comprehensive performance.

[0004] At present, the traditional method for preparing tungsten alloy ultra-fine wires is online heating tower wheel slip drawing. This method has extremely high requirements on the surface hardness, roughness and roundness of the coaxial tower wheel. Even so, when drawing high-hardness tungsten alloy, the tower wheel surface is still prone to wear, resulting in surface defects of the tungsten alloy ultra-fine wires, making it difficult for the tensile strength of the tungsten alloy ultra-fine wires to reach more than 4300MPa, greatly limiting the application range of this material. In addition, due to sliding friction, the tower wheel drawing is prone to frequent wire breakage, which greatly limits the yield rate. Summary of the invention

[0005] The purpose of the present invention is to provide a high-strength tungsten alloy ultra-fine wire drawing device, aiming at the existing technology of online heating tower pulley type slip drawing, and solving the defect of tower pulley type slip drawing caused by sliding friction between the tower pulley and the metal filament.

[0006] The present invention is implemented in this way: a high-strength tungsten alloy ultra-fine wire drawing device includes a traction structure and a drawing structure.

[0007] The traction structure includes an inner winding piston, an outer electromagnetic coil, a linear guide rail and a clamp;

[0008] The pulling structure includes a clamping claw, a solenoid valve and an eye mold;

[0009] The inner winding piston and the outer electromagnetic coil are both sleeved on the linear guide rail, and the outer electromagnetic coil is sleeved on the outside of the inner winding piston, and the outer electromagnetic coil is fixed on the linear guide rail by a clamp, and the inner electromagnetic coil is arranged in the inner winding piston;

[0010] The eye mold is arranged on one side of the linear guide rail, the clamping jaws are fixedly mounted on the inner winding piston, and the clamping jaws are connected to the solenoid valve. After the tungsten wire passes through the eye mold, it is fixed and clamped by the clamping jaws, and the opening and closing of the clamping jaws are controlled by the solenoid valve.

[0011] By energizing the inner and outer electromagnetic coils to generate a magnetic field, the inner winding piston moves in the direction of the linear guide. After reaching the limit of the linear guide, the positive and negative poles of the current of the outer winding coil are reversed to generate an opposite magnetic field, causing the solenoid valve to return to its original position in the opposite direction.

[0012] Furthermore, the fixture is a cylindrical shell, the linear guide rail axially passes through the fixture, both ends of the linear guide rail extend to the outside of the fixture, and the fixture is fixedly connected to the linear guide rail, and the inner winding piston and the outer electromagnetic coil are both sleeved in the fixture;

[0013] The upper end of the clamp is provided with a long strip-shaped sliding groove along the axial direction, and the clamping claw passes through the sliding groove and moves horizontally in the sliding groove.

[0014] Furthermore, the clamp is a pneumatic clamp, and the pneumatic clamp is fixedly mounted on the inner winding piston via a connecting column, the connecting column passes through a slide slot of the clamp, and the pneumatic clamp is arranged outside the clamp.

[0015] Furthermore, the outer electromagnetic wire is provided with N turns, and the N turns of the outer electromagnetic wire are distributed from one end inside the clamp to the other end inside the clamp, and both ends of the outer electromagnetic wire pass through the clamp and extend to the outside of the clamp.

[0016] Furthermore, both ends of the linear guide rail are respectively fixedly connected with limit rings.

[0017] Furthermore, the inner electromagnetic coil is provided with n turns, and the n turns of the inner electromagnetic coil are wound on the inner winding piston, and both ends of the electromagnetic coil pass through the inner winding piston and the slide groove and extend to the outside of the fixture.

[0018] Furthermore, the pneumatic clamp includes a chuck and two chucks, the chuck is in a semi-frame shape, the two chucks are installed in the chuck, the two chucks form a clamping space, and the two chucks clamp the tungsten alloy wire.

[0019] Compared with the prior art, the device is mainly divided into two parts. It is an electromagnetic direct-drive non-slip pulling device for tungsten alloy ultra-fine wires. The main body of the traction device is an electromagnetic coil, which includes an inner winding piston and an outer winding coil. The inner winding piston is sleeved on a linear guide rail, and the outer winding coil is fixed with a clamp. By giving the inner and outer electromagnetic coils a magnetic field, the inner winding piston moves in the direction of the linear guide rail. After reaching the limit, the positive and negative poles of the current of the outer winding coil are reversed to generate an opposite magnetic field, so that the solenoid valve returns to its original position in the opposite direction. By using the magnetic drive of the electromagnetic coil and the method of reversing the positive and negative poles, the pneumatic clamp fixed on the inner winding piston produces a linear reciprocating operation. After the tungsten wire passes through the eye mold, it is fixed and clamped with the pneumatic clamp, and the opening and closing of the pneumatic clamp is controlled by the electromagnetic valve.

[0020] The pneumatic clamp is fixed on the inner winding piston. When the inner winding piston moves forward under the magnetic force of the inner and outer electromagnetic coils, the pneumatic clamp clamps the tungsten alloy filament under the action of the electromagnetic valve, and drags the tungsten alloy filament outward with the traction of the traction device, and the tungsten alloy filament is drawn through the die. When the pneumatic clamp reaches the limit, it releases and returns to the original starting point in the opposite direction.

[0021] The opening and closing of the pneumatic clamp and the reciprocating motion of the pneumatic clamp in the slideway realize the drawing of the metal tungsten alloy filament after passing through the die, thereby obtaining high-strength tungsten alloy filament. The electromagnetic driven drawing method avoids sliding friction, reduces surface defects of the filament, and the drawing force can be dynamically controlled by the wire diameter, thereby reducing the probability of wire breakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the high-strength tungsten alloy ultra-fine wire drawing device provided by the present invention;

[0023] Figure 2 It is a schematic diagram of the internal structure of the high-strength tungsten alloy ultra-fine wire drawing device provided by the present invention;

[0024] Figure 3 It is a cross-sectional view of the high-strength tungsten alloy ultra-fine wire drawing device provided by the present invention.

[0025] Reference numerals in the above drawings:

[0026] Clamp 1, slide 101, linear guide 2, limit ring 3, eye mold 4, connecting column 5, pneumatic clamp 6, chuck 601, chuck 602, solenoid valve 7, outer electromagnetic coil 8, inner winding piston 9, inner electromagnetic coil 10. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] The implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0029] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0030] Reference Figure 1-3 The figure shows a preferred embodiment of the present invention.

[0031] At present, the traditional method for preparing tungsten alloy ultra-fine wires is online heating tower pulley slip drawing. The greater the sliding between the tower pulley and the copper-clad steel wire, the more severe the wear on the tower pulley surface. This uneven sliding will shorten the service life of the tower pulley. Therefore, a cumulative sliding effect should be considered. It propagates and accumulates in a multiplied manner from the finished mold to the wire feed direction. The earlier the pass, the greater the slip and the more severe the wear. At the same time, the earlier the pass, the thicker the wire diameter, the greater the drawing load, the greater the power loss, and the more severe the damage between the wire and the tower pulley, resulting in grooves on the tower pulley, or the wire is thrown up during drawing, causing the mold to shake, and the wire is unevenly stressed, and bamboo-like or broken.

[0032] The main disadvantage of this technology is that there is sliding friction between the tower wheel and the metal filament in the tower wheel type slip-type drawing. This sliding friction mainly brings three defects:

[0033] (1) Increased cost: In order to reduce the sliding friction between the tower wheel and the metal filament, the requirements for the surface hardness, roughness and roundness of the coaxial tower wheel are increased, thereby increasing the difficulty and cost of operation;

[0034] (2) Reduced tensile strength: Due to the wear of the tower pulley surface, the tungsten alloy ultra-fine wire is prone to surface defects, which reduces the tensile strength of the filament and makes it difficult to reach 4300MPa, greatly limiting the application scope of this material;

[0035] (3) Reduced yield rate: Due to sliding friction, the wire is prone to frequent wire breakage during tower pulley pulling, which greatly limits the yield rate.

[0036] Compared with the existing tower pulley pulling, the advantages of this device are mainly two points: the device uses electromagnetic direct drive as the power, which avoids the relative sliding between the tungsten wire and the pulling device, thereby avoiding friction damage on the surface of the wire; the pulling force used for pulling can be dynamically set according to the wire diameter, which greatly reduces the probability of wire breakage. Figure 1-3 The figure shows a preferred embodiment of the present invention.

[0037] A high-strength tungsten alloy ultra-fine wire drawing device includes a traction structure and a drawing structure, wherein the traction structure includes an inner winding piston 9, an outer electromagnetic coil 8, a linear guide rail 2 and a fixture 1; the inner winding piston 9 and the outer electromagnetic coil 8 are both sleeved on the linear guide rail 2, and the outer electromagnetic coil 8 is sleeved on the outside of the inner winding piston 9, and the outer electromagnetic coil 8 is fixed on the linear guide rail 2 by the fixture 1, and an inner electromagnetic coil 10 is arranged in the inner winding piston 9;

[0038] The drawing structure includes a clamping jaw, a solenoid valve 7 and an eye die 4; the eye die 4 is arranged on one side of the linear guide rail 2, the clamping jaw is fixedly mounted on the inner winding piston 9, and the clamping jaw is connected to the solenoid valve 7. After the tungsten wire passes through the eye die 4 mold, it is fixed and clamped by the clamping jaw, and the opening and closing of the clamping jaw is controlled by the solenoid valve 7;

[0039] By energizing the inner electromagnetic coil 10 and the outer electromagnetic coil 8 to generate a magnetic field, the inner winding piston 9 moves in the direction of the linear guide 2. After reaching the limit of the linear guide 2, the positive and negative poles of the current of the outer winding coil are reversed, thereby generating an opposite magnetic field, causing the solenoid valve 7 to return to its original position in the opposite direction.

[0040] The device is mainly divided into two parts. It is an electromagnetic direct drive non-slip pulling tungsten alloy ultra-fine wire device. The main body of the traction device is an electromagnetic coil, which includes an inner winding piston 9 and an outer winding coil. The inner winding piston 9 is sleeved on the linear guide 2, and the outer winding coil is fixed with a clamp 1. By using the magnetic drive of the electromagnetic coil and the method of reverse connection of positive and negative poles, the pneumatic clamp 6 fixed on the inner winding piston 9 produces a linear reciprocating operation. After the tungsten wire passes through the eye mold 4, it is fixed and clamped with the pneumatic clamp 6, and the opening and closing of the pneumatic clamp 6 is controlled by the electromagnetic valve 7.

[0041] The fixture 1 is a cylindrical shell, the linear guide rail 2 axially passes through the fixture 1, both ends of the linear guide rail 2 extend to the outside of the fixture 1, and the fixture 1 is fixedly connected to the linear guide rail 2, and the inner winding piston 9 and the outer electromagnetic coil 8 are both sleeved in the fixture 1;

[0042] The upper end of the clamp 1 is provided with a long slot 101 in the axial direction. The clamping jaw passes through the slot 101 and moves horizontally in the slot 101. The length of the slot 101 is the range within which the inner winding piston 9 can move.

[0043] The clamp is a pneumatic clamp 6 , and the pneumatic clamp 6 is fixedly mounted on the inner winding piston 9 via a connecting column 5 . The connecting column 5 passes through the slide slot 101 of the clamp 1 , and the pneumatic clamp 6 is arranged outside the clamp 1 .

[0044] The outer electromagnetic wire is provided with N turns, and the N turns of the outer electromagnetic wire are distributed from one end inside the clamp 1 to the other end inside the clamp 1 , and both ends of the outer electromagnetic wire pass through the clamp 1 and extend to the outside of the clamp 1 .

[0045] Both ends of the linear guide rail 2 are fixedly connected with limit rings 3 respectively.

[0046] The inner electromagnetic coil 10 is provided with n turns, and the n turns of the inner electromagnetic coil 10 are wound on the inner winding piston 9, and both ends of the electromagnetic coil pass through the inner winding piston 9 and the slide groove 101 to extend to the outside of the fixture 1.

[0047] The pneumatic clamp 6 includes a chuck 601 and two clamps 602 . The chuck 601 is in a semi-frame shape. The two clamps 602 are installed in the chuck 601 . The two clamps 602 form a clamping space. The two clamps 602 clamp the tungsten alloy wire.

[0048] The metal tungsten alloy filament is pulled through the die by the opening and closing of the pneumatic clamp 6 and the reciprocating motion of the pneumatic clamp 6 in the slide slot 101, thereby obtaining a high-strength tungsten alloy filament. The electromagnetically driven pulling method avoids sliding friction, reduces surface defects of the filament, and the pulling force can be dynamically controlled by the wire diameter, thereby reducing the probability of wire breakage.

[0049] The device is mainly divided into two parts. It is an electromagnetic direct-drive non-slip pulling tungsten alloy ultra-fine wire device. The main body of the traction device is an electromagnetic coil, which includes an inner winding piston 9 and an outer winding coil. The inner winding piston 9 is sleeved on the linear guide 2, and the outer winding coil is fixed with a clamp 1. By giving the inner electromagnetic coil 10 and the outer electromagnetic coil 8 a magnetic field, the inner winding piston 9 moves in the direction of the linear guide 2. After reaching the limit, the positive and negative poles of the current of the outer winding coil are reversed to generate an opposite magnetic field, so that the electromagnetic valve 7 returns to its original position in the opposite direction. By using the magnetic force drive of the electromagnetic coil and the method of reverse connection of the positive and negative poles, the pneumatic clamp 6 fixed on the inner winding piston 9 produces a linear reciprocating operation. After the tungsten wire passes through the eye mold 4 mold, the pneumatic clamp 6 is used to fix and clamp it, and the opening and closing of the pneumatic clamp 6 is controlled by the electromagnetic valve 7.

[0050] The pneumatic clamp 6 is fixed on the inner winding piston 9. When the inner winding piston 9 moves forward under the magnetic force of the inner and outer electromagnetic coils, the pneumatic clamp 6 is in a state of clamping the tungsten alloy filament under the action of the electromagnetic valve 7, and the tungsten alloy filament is dragged outward with the traction of the traction device, and the tungsten alloy filament is drawn through the die. When the pneumatic clamp 6 reaches the limit, it is released and returns to the original starting point in the opposite direction.

[0051] 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 and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. High-strength tungsten alloy ultra-fine wire drawing device, characterized in that: Including traction structure and pulling structure, The traction structure includes an inner winding piston, an outer electromagnetic coil, a linear guide rail and a clamp; The pulling structure includes a clamping claw, a solenoid valve and an eye mold; The inner winding piston and the outer electromagnetic coil are both sleeved on the linear guide rail, and the outer electromagnetic coil is sleeved on the outside of the inner winding piston, and the outer electromagnetic coil is fixed on the linear guide rail by a clamp, and the inner electromagnetic coil is arranged in the inner winding piston; The eye mold is arranged on one side of the linear guide rail, the clamping jaws are fixedly mounted on the inner winding piston, and the clamping jaws are connected to the solenoid valve. After the tungsten wire passes through the eye mold, it is fixed and clamped by the clamping jaws, and the opening and closing of the clamping jaws are controlled by the solenoid valve. By energizing the inner and outer electromagnetic coils to generate a magnetic field, the inner winding piston moves in the direction of the linear guide rail. After reaching the limit of the linear guide rail, the positive and negative poles of the current of the outer winding coil are reversed to generate an opposite magnetic field, causing the solenoid valve to return to its original position in the opposite direction. The fixture is a cylindrical shell, the linear guide rail passes through the fixture axially, the two ends of the linear guide rail extend to the outside of the fixture, and the fixture is fixedly connected to the linear guide rail, and the inner winding piston and the outer electromagnetic coil are both sleeved in the fixture; The upper end of the clamp is provided with a long slot in the axial direction, and the clamp passes through the slot and moves horizontally in the slot; The clamp is a pneumatic clamp, and the pneumatic clamp is fixedly mounted on the inner winding piston via a connecting column, the connecting column passes through the slide slot of the clamp, and the pneumatic clamp is arranged outside the clamp; The outer electromagnetic wire is provided with N turns, and the N turns of the outer electromagnetic wire are distributed from one end inside the clamp to the other end inside the clamp, and both ends of the outer electromagnetic wire pass through the clamp and extend to the outside of the clamp; Both ends of the linear guide rail are respectively fixedly connected to limit rings; The inner electromagnetic coil is provided with n turns, and the n turns of the inner electromagnetic coil are wound on the inner winding piston, and both ends of the electromagnetic coil pass through the inner winding piston and the slide groove to extend to the outside of the fixture.

2. The high-strength tungsten alloy ultra-fine wire drawing device according to claim 1 is characterized in that: The pneumatic clamp comprises a chuck and two chucks. The chuck is in a semi-frame shape. The two chucks are installed in the chuck. The two chucks form a clamping space. The two chucks clamp the tungsten alloy wire.

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