Traction device for wire drawing machine

Abstract

The invention belongs to the technical field of metal wire machining, and discloses a traction device for a wire drawing machine, the traction device comprises an outer box, a plurality of molds and traction wheels are arranged in the outer box, and the interior of the outer box is movably connected with guide wheels located on the two sides of the molds; through cooperation of a rotating assembly, a lubricating assembly, a liquid storage box and other structures, abrasion and friction to a traction wheel are reduced, a tungsten rod makes contact with two sponges before entering the traction wheel, so that lubricating oil is smeared to the surface of the tungsten rod through the sponges, and when a first motor rotates, a first round rod can be driven to move along the track of a guide groove; and a first round rod drives a square plate to continuously extrude lubricating oil in a cavity of a supporting frame, so that the lubricating oil is continuously supplemented into sponge, a tungsten rod is conveniently lubricated through the sponge, friction between the tungsten rod and a traction wheel is reduced, and abrasion to the traction wheel is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of metal wire processing, in particular to a traction device for a wire drawing machine. Background Art

[0002] A wire drawing machine is a device used to draw metal materials (such as tungsten wire) through a die to make its diameter thinner. Its basic principle is to use the ductility of the metal material. Under the action of the wire drawing die, a tensile force is applied to the metal rod or thicker wire to make it pass through a die hole smaller than its own diameter, thereby achieving diameter reduction and stretching of the metal wire.

[0003] The traction device is an important component of the wire drawing machine. During the processing of tungsten wire, it needs to be wound circumferentially on the surface of the traction wheel. During the traction process, heat is generated due to the friction between the tungsten wire and the traction device. Therefore, most traction devices are equipped with a spray pipe for spraying coolant or lubricant. However, the angle of the spray pipe may be limited, and the spraying method of the spray pipe may cause the lubricant to be unevenly distributed on the parts that need lubrication, which may cause some areas to get too much lubricant, while other areas are insufficient. For example, at the contact part between the tungsten wire and the traction wheel, due to the rotation of the traction wheel, the side close to the spray head may be covered with a large amount of lubricant, while the other side may have only a small amount of lubricant or no lubricant at all, resulting in local poor lubrication, thereby increasing the friction between the tungsten wire and the traction wheel, which may cause wear of the traction wheel, thereby reducing the service life of the traction wheel, and also affecting the processing efficiency of the tungsten wire. Therefore, a traction device for a wire drawing machine is proposed to solve the problems raised in the background technology. Summary of the invention

[0004] In order to solve the problems raised in the above background technology, the present invention provides a traction device for a wire drawing machine, which has the advantages of reducing the friction between the tungsten wire and the traction wheel, thereby reducing the wear on the traction wheel.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a traction device for a wire drawing machine, comprising an outer box, a plurality of dies and a plurality of traction wheels are arranged inside the outer box, the inner part of the outer box is movably connected with guide wheels located on both sides of the dies, a rotating assembly and a second motor are arranged at both ends of the inner part of the outer box, a lubrication assembly and a liquid storage tank are arranged inside the end of the outer box close to the rotating assembly, a winding assembly is arranged inside the end of the outer box close to the second motor, and a plurality of spray pipes matching the dies are arranged inside the outer box; The rotating assembly includes a first motor fixedly connected to the inside of the outer box, the output shaft end of the first motor is fixedly connected to a rotating drum, and the inner wall of the rotating drum is provided with a guide groove; The lubrication assembly comprises a support frame, two sponges are symmetrically arranged in the middle of the support frame, a square plate is movably connected inside the cavity of the support frame, and a first round rod and a spring are respectively fixedly connected on both sides of the square plate.

[0006] Preferably, the winding assembly comprises a winding drum and a reciprocating screw rod movably connected inside the outer box, a sliding block is threadedly connected to the surface of the reciprocating screw rod, and a limit block is movably sleeved on the outside of the sliding block.

[0007] Preferably, a guide hole is provided at the top of the limit block, two limit grooves are provided at the tops of the two side walls of the limit block, and two protrusions are provided on both sides of the sliding block for sliding in the two limit grooves respectively.

[0008] Preferably, a second round rod is fixedly connected to the bottom end of the side wall of the limit block, a sliding groove matching with the second round rod is provided on the inner wall of the outer box, and the second round rod moves inside the sliding groove.

[0009] Preferably, the winding drum and the reciprocating screw rod are fixedly connected to the first gear and the second gear at one end close to the second motor respectively, the first gear and the second gear are meshingly connected, and the output shaft end of the second motor is fixedly connected to the axis of the winding drum.

[0010] Preferably, the guide groove consists of a straight groove and an arc groove with an arc of 360 degrees, and both ends of the arc groove are respectively connected to the straight groove.

[0011] Preferably, the first round rod passes through the outer wall of the support frame and extends to the inside of the rotating drum. A connecting column is provided at one end of the first round rod, and the connecting column is movably clamped in the inside of the guide groove.

[0012] Preferably, the outer wall of the square plate fits with the inner wall of the cavity of the support frame, the square plate is elastically connected to the support frame via a spring sheet, and a gap is left between the two sponges.

[0013] Preferably, two liquid outlet pipes are symmetrically arranged in the middle of the support frame, a liquid inlet pipe connected to the liquid storage tank is arranged on the top of the support frame, and one-way valves are arranged inside the liquid inlet pipe and the liquid outlet pipe.

[0014] Preferably, a cover plate is hinged on the top of the outer box, and the cover plate seals one side of the outer box in an initial state, and the spray pipe is located directly above the mold.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention reduces the wear and friction on the traction wheel through the cooperation between the rotating component, the lubricating component and the liquid storage box. Before the tungsten rod enters the traction wheel, it will first contact with two sponges, so that the lubricating oil is applied to the surface of the tungsten rod through the sponges. When the first motor rotates, it can drive the first round rod to move along the trajectory of the guide groove, and then the first round rod drives the square plate to continuously squeeze the lubricating oil inside the cavity of the support frame, so that the lubricating oil is continuously replenished to the inside of the sponge, so as to facilitate the lubrication of the tungsten rod through the sponge, thereby reducing the friction between the tungsten rod and the traction wheel, thereby reducing the wear on the traction wheel.

[0016] The present invention facilitates uniform and stable winding of the tungsten wire through the coordination between structures such as the winding drum, the limit block and the slide groove. When the reciprocating screw rotates, the slider drives the limit block to move together through the limit groove, and then pulls the tungsten wire to slide through the guide hole at the top of the limit block, so that the tungsten wire is evenly wound on the winding drum. When the limit block moves, it also drives the second round rod to slide inside the slide groove, so that the second round rod drives the limit block to move downward along the trajectory of the slide groove, and then adjusts the tension of the tungsten wire, which helps to maintain the tension of the tungsten wire within a reasonable range, thereby achieving the effect of uniform and stable winding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the position relationship among the mold, guide wheel, traction wheel and spray pipe of the present invention; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 It is a schematic diagram of the side section structure of the lubrication component of the present invention; Figure 5 for Figure 4 Enlarged view of point B in the middle; Figure 6 An exploded view of the winding assembly of the present invention; Figure 7 It is an exploded view of the rotating assembly of the present invention.

[0018] In the figure: 1. outer box; 2. mold; 3. guide wheel; 4. traction wheel; 5. rotating assembly; 51. first motor; 52. rotating drum; 53. guide groove; 6. lubrication assembly; 61. support frame; 62. sponge; 63. square plate; 64. first round rod; 65. spring; 66. liquid outlet pipe; 67. liquid inlet pipe; 68. one-way valve; 7. liquid storage box; 8. winding assembly; 81. winding drum; 82. reciprocating screw rod; 83. slider; 84. limit block; 85. guide hole; 86. limit groove; 87. second round rod; 88. slide groove; 89. first gear; 810. second gear; 9. second motor; 10. spray pipe; 11. cover plate. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0020] like Figures 1 to 7 As shown, the present invention provides a traction device for a wire drawing machine, comprising an outer box 1, a plurality of dies 2 and a plurality of traction wheels 4 are arranged inside the outer box 1, guide wheels 3 located on both sides of the dies 2 are movably connected inside the outer box 1, a rotating assembly 5 and a second motor 9 are arranged at both ends inside the outer box 1, a lubrication assembly 6 and a liquid storage box 7 are arranged inside the end of the outer box 1 close to the rotating assembly 5, a winding assembly 8 is arranged inside the end of the outer box 1 close to the second motor 9, and a plurality of spray pipes 10 matched with the dies 2 are arranged inside the outer box 1; The rotating assembly 5 includes a first motor 51 fixedly connected to the inside of the outer box 1, and the output shaft end of the first motor 51 is fixedly connected to a rotating drum 52, and the inner wall of the rotating drum 52 is provided with a guide groove 53; The lubrication assembly 6 includes a support frame 61, two sponges 62 are symmetrically arranged in the middle of the support frame 61, a square plate 63 is movably connected inside the cavity of the support frame 61, and a first round rod 64 and a spring 65 are fixedly connected to both sides of the square plate 63.

[0021] The above scheme is adopted: before the tungsten rod enters the traction wheel 4, it will first contact with the two sponges 62, so that the lubricating oil is applied to the surface of the tungsten rod through the sponge 62. When the first motor 51 rotates, it can drive the first round rod 64 to move along the trajectory of the guide groove 53, and then the first round rod 64 drives the square plate 63 to continuously squeeze the lubricating oil inside the cavity of the support frame 61, so that the lubricating oil is continuously replenished to the inside of the sponge 62, so as to facilitate the lubrication of the tungsten rod through the sponge 62, thereby reducing the friction between the tungsten rod and the traction wheel 4, thereby reducing the wear on the traction wheel 4.

[0022] like Figure 3 , Figure 4 and Figure 6 As shown, the winding assembly 8 includes a winding drum 81 and a reciprocating screw rod 82 which are movably connected to the inside of the outer box 1, and a slider 83 is threadedly connected to the surface of the reciprocating screw rod 82. The outer movably sleeved limit block 84 of the slider 83 has a guide hole 85 on the top of the limit block 84, and two limit grooves 86 are provided on the top of the two side walls of the limit block 84. Two protrusions are provided on both sides of the slider 83 that slide respectively inside the two limit grooves 86, and a second round rod 87 is fixedly connected to the bottom end of the side wall of the limit block 84. A slide groove 88 matching the second round rod 87 is provided on the inner wall of the outer box 1, and the second round rod 87 moves inside the slide groove 88.

[0023] With the above solution, when the reciprocating screw 82 rotates, the slider 83 drives the limit block 84 to move together through the limit groove 86, and then pulls the tungsten wire to slide through the guide hole 85 at the top of the limit block 84, so that the tungsten wire is evenly wound on the winding drum 81. When the limit block 84 moves, it also drives the second round rod 87 to slide inside the slide groove 88, so that the second round rod 87 drives the limit block 84 to move downward along the track of the slide groove 88, and then adjusts the tension of the tungsten wire, which helps to maintain the tension of the tungsten wire within a reasonable range, thereby achieving the effect of uniform and stable winding; Through the design of the limit groove 86, its function is that when the reciprocating screw 82 rotates, the limit groove 86 limits the protrusion on the slider 83 in the vertical direction, so that the slider 83 can only move linearly horizontally through the reciprocating screw 82, and when the second round rod 87 moves downward along the trajectory of the slide groove 88, it will also cooperate with the slider 83 through the limit groove 86, thereby driving the protrusion on the slider 83 to slide inside the limit groove 86.

[0024] like Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, the winding drum 81 and the reciprocating screw rod 82 are fixedly connected with the first gear 89 and the second gear 810 at one end close to the second motor 9, respectively. The first gear 89 and the second gear 810 are meshingly connected, and the output shaft end of the second motor 9 is fixedly connected to the axis of the winding drum 81. The guide groove 53 consists of a straight groove and an arc groove with an arc of 360 degrees. The two ends of the arc groove are respectively connected to the two ends of the straight groove. The first round rod 64 passes through the outer wall of the support frame 61 and extends to the interior of the rotating drum 52. A connecting column is provided at one end of the first round rod 64, and the connecting column is movably clamped in the interior of the guide groove 53.

[0025] The above scheme is adopted: the guide groove 53 includes a straight groove, and its function is that when the first round rod 64 drives the square plate 63 to squeeze the lubricating oil, the spring sheet 65 will be compressed. When the first motor 51 drives the drum 52 to rotate one circle, the connecting column on the first round rod 64 will slide along the trajectory of the arc groove of the guide groove 53 until it reaches the inside of the groove. At this time, through the design of the spring sheet 65, the square plate 63 drives the connecting column of the first round rod 64 to reset along the trajectory of the straight groove of the guide groove 53 under the action of the elastic force of the spring sheet 65. When the square plate 63 is reset, the pressure inside the cavity of the support frame 61 changes, so that the lubricating oil inside the liquid storage box 7 is unidirectionally supplemented to the inside of the support frame 61 through the liquid inlet pipe 67. When the square plate 63 is completely reset, the connecting column on the first round rod 64 slides again to the inside of the arc groove of the guide groove 53, so as to facilitate the next use. It is worth noting here that the operator modifies the PWM parameters by adjusting the programming software or hardware interface of the controller of the first motor 51, thereby reducing the duty cycle to reduce the average voltage of the first motor 51, thereby slowing down the rotation frequency of the first motor 51, which belongs to the prior art, and further slows down the speed at which the first round rod 64 drives the square plate 63 to move, thereby achieving the effect of uniform and slow replenishment, thereby preventing excessive lubricating oil from being smeared on the surface of the tungsten rod.

[0026] like Figure 5 and Figure 7 As shown, the outer wall of the square plate 63 fits with the inner wall of the cavity of the support frame 61, the square plate 63 is elastically connected to the support frame 61 through a spring 65, a gap is left between the two sponges 62, two liquid outlet pipes 66 are symmetrically arranged in the middle of the support frame 61, a liquid inlet pipe 67 connected to the liquid storage box 7 is arranged on the top of the support frame 61, and a one-way valve 68 is arranged inside the liquid inlet pipe 67 and the liquid outlet pipe 66. A cover plate 11 is hinged on the top of the outer box 1, and the cover plate 11 seals one side of the outer box 1 in the initial state, and the spray pipe 10 is located directly above the mold 2.

[0027] The above scheme is adopted: through the design of the one-way valve 68, its function is that when the square plate 63 squeezes the lubricating oil inside the cavity of the support frame 61, the lubricating oil will pass through the liquid outlet pipe 66 and be discharged unidirectionally under the action of the one-way valve 68. When the square plate 63 is reset, the lubricating oil inside the liquid storage box 7 will pass through the liquid inlet pipe 67 and flow into the cavity unidirectionally under the action of the one-way valve 68 inside it, thereby ensuring the normal operation of the oil replenishment and preventing the lubricating oil from flowing back to the inside of the liquid storage box 7 when the square plate 63 is squeezed.

[0028] The working principle and use process of the present invention are as follows: the head of the tungsten rod is processed into a shape suitable for entering the mold 2, generally by sharpening it or processing it into a cone shape, then the head of the tungsten rod is inserted into the mold 2, and the device is started, so that the guide wheel 3 and the traction wheel 4 rotate, and then the tungsten rod is pulled at an appropriate speed by the traction wheel 4, so that the tungsten rod passes through the mold 2 and starts the first drawing. In this process, the diameter of the tungsten rod is gradually reduced under the pulling force of the traction device and the resistance of the mold 2, and a thinner tungsten wire is initially formed; When the device is running, the first motor 51 and the second motor 9 are started synchronously. Before the tungsten rod enters the mold 2, it will first contact the surfaces of the two sponges 62, so that the lubricating oil is applied to the surface of the tungsten wire through the sponges 62. The first motor 51 rotates while driving the drum 52 to rotate, so that the connecting column outside the first round rod 64 slides along the trajectory of the arc groove of the guide groove 53. Since the first round rod 64 is fixedly connected to the square plate 63 and the first round rod 64 is limited by the inner wall of the cavity of the support frame 61, the connecting column on the first round rod 64 can only slide along the trajectory of the arc groove of the guide groove 53. The arc track of the guide groove 53 moves in the direction of the spring piece 65, and the first round rod 64 moves while driving the square plate 63 to move together, so that the square plate 63 squeezes the lubricating oil stored in the cavity of the support frame 61 during the movement, and then the lubricating oil passes through the liquid outlet pipe 66 and flows into the sponge 62 in one direction under the action of the one-way valve 68, so as to continuously replenish the lubricating oil in the sponge 62, thereby ensuring that the tungsten rod can be fully lubricated before entering, thereby reducing the friction between the tungsten rod and the traction wheel 4, reducing the wear of the traction wheel 4, and extending its service life; When the stretched tungsten wire is to be wound up, the operator passes one end of the tungsten wire through the guide hole 85 and fixes it on the winding drum 81. Then, the second motor 9 is operated to drive the winding drum 81 and the first gear 89 thereon to rotate. While the winding drum 81 rotates, the tungsten wire is wound up. At the same time, the first gear 89 is meshed with the second gear 810, thereby driving the reciprocating screw rod 82 to rotate, and then the slider 83 slides on the reciprocating screw rod 82. While the slider 83 slides, due to the limitation of the protrusions on both sides of the slider 83 by the limiting groove 86, the slider 83 drives the limiting block 84 to move linearly in the direction away from the second motor 9 through the reciprocating screw rod 82. The limiting block 84 is engaged with the second gear 810. 4 moves, and the tungsten wire is driven to move synchronously through the guide hole 85, so that the tungsten wire is evenly wound onto the surface of the winding drum 81. When the limit block 84 moves, it also drives the second round rod 87 at its bottom end to slide inside the slide groove 88. As the guide hole 85 drives the tungsten wire farther away from the second motor 9, the length of the tungsten wire from the outlet end to the guide hole 85 becomes longer. At this time, the second round rod 87 drives the guide hole 85 to move downward along the track of the slide groove 88, thereby reducing the tension of the tungsten wire after the guide hole 85 moves, which helps to maintain the tension of the tungsten wire within a reasonable range, ensures the smooth progress of the winding process, and enables the tungsten wire to be evenly wound onto the winding drum 81 with appropriate tension.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A traction device for a wire drawing machine, comprising an outer box (1), characterized in that: A plurality of molds (2) and a plurality of traction wheels (4) are arranged inside the outer box (1); guide wheels (3) located on both sides of the molds (2) are movably connected inside the outer box (1); a rotating assembly (5) and a second motor (9) are arranged at both ends inside the outer box (1); a lubrication assembly (6) and a liquid storage box (7) are arranged inside the end of the outer box (1) close to the rotating assembly (5); a winding assembly (8) is arranged inside the end of the outer box (1) close to the second motor (9); and a plurality of spray pipes (10) matching the molds (2) are arranged inside the outer box (1); The rotating assembly (5) comprises a first motor (51) fixedly connected to the inside of the outer box (1); an output shaft end of the first motor (51) is fixedly connected to a rotating drum (52); and a guide groove (53) is provided on the inner wall of the rotating drum (52); The lubrication assembly (6) comprises a support frame (61), two sponges (62) are symmetrically arranged in the middle of the support frame (61), a square plate (63) is movably connected inside the cavity of the support frame (61), and a first round rod (64) and a spring sheet (65) are fixedly connected to two sides of the square plate (63), respectively.

2. The traction device for a wire drawing machine according to claim 1, characterized in that: The winding assembly (8) comprises a winding drum (81) and a reciprocating screw rod (82) movably connected to the inside of the outer box (1); a sliding block (83) is threadedly connected to the surface of the reciprocating screw rod (82); and a limit block (84) is movably sleeved on the outside of the sliding block (83).

3. The traction device for a wire drawing machine according to claim 2, characterized in that: A guide hole (85) is provided at the top of the limit block (84), two limit slots (86) are provided at the tops of the two side walls of the limit block (84), and two protrusions are provided on both sides of the slide block (83) and slide in the two limit slots (86) respectively.

4. The traction device for a wire drawing machine according to claim 2, characterized in that: A second round rod (87) is fixedly connected to the bottom end of the side wall of the limit block (84), and a sliding groove (88) matching with the second round rod (87) is provided on the inner wall of the outer box (1), and the second round rod (87) moves inside the sliding groove (88).

5. The traction device for a wire drawing machine according to claim 2, characterized in that: The ends of the winding drum (81) and the reciprocating screw rod (82) close to the second motor (9) are respectively fixedly connected with a first gear (89) and a second gear (810); the first gear (89) and the second gear (810) are meshingly connected; and the output shaft end of the second motor (9) is fixedly connected to the axis of the winding drum (81).

6. The traction device for a wire drawing machine according to claim 1, characterized in that: The guide groove (53) consists of a straight groove and an arc groove with an arc of 360 degrees, and both ends of the arc groove are respectively connected to the straight groove.

7. The traction device for a wire drawing machine according to claim 1, characterized in that: The first round rod (64) passes through the outer wall of the support frame (61) and extends to the inside of the rotating drum (52); a connecting column is provided at one end of the first round rod (64), and the connecting column is movably clamped in the inside of the guide groove (53).

8. The traction device for a wire drawing machine according to claim 1, characterized in that: The outer wall of the square plate (63) fits the inner wall of the cavity of the support frame (61); the square plate (63) is elastically connected to the support frame (61) via a spring sheet (65); and a gap is left between the two sponges (62).

9. The traction device for a wire drawing machine according to claim 1, characterized in that: Two liquid outlet pipes (66) are symmetrically arranged in the middle of the support frame (61), and a liquid inlet pipe (67) connected to the liquid storage box (7) is arranged at the top of the support frame (61), and one-way valves (68) are arranged inside the liquid inlet pipe (67) and the liquid outlet pipe (66).

10. The traction device for a wire drawing machine according to claim 1, characterized in that: A cover plate (11) is hingedly connected to the top of the outer box (1), and the cover plate (11) seals one side of the outer box (1) in an initial state. The spray pipe (10) is located directly above the mold (2).

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