Automatic wire drawing equipment for intelligent production

Abstract

The invention discloses intelligent production automatic wire drawing equipment which comprises a pay-off mechanism, a wire furnace, a mold furnace, a wire drawing mechanism, a take-up mechanism and a control system, and the pay-off mechanism comprises a pay-off wheel, a swing pulley, a buffer pulley and a pay-off speed measurement pulley; the pay-off wheel is driven by a pay-off servo motor to rotate and pay off The buffer pulley can vertically and linearly float and is provided with a floating detection sensor; the paying-off speed measurement pulley is provided with a first speed measurement sensor; the take-up mechanism comprises a take-up wheel and a take-up servo motor; the tension speed measurement mechanism comprises a first guide pulley and a post-drawing speed measurement pulley, the first guide pulley is connected with a second swing arm, the second swing arm is connected with a torsion control servo motor, and the control system controls the pay-off speed in real time according to the floating condition of the buffer pulley; meanwhile, the torque control servo motor is controlled to provide corresponding torque according to the current angle of the second swing arm, and the rotating speed of the take-up servo motor is controlled according to the angle change trend and the wire drawing speed of the second swing arm.

Description

Technical Field

[0001] The invention relates to the field of wire drawing equipment, in particular to an automatic wire drawing equipment for intelligent production. Background Art

[0002] Wire drawing machine (also called wire drawing machine, wire drawing machine), mainly used in machinery manufacturing, hardware processing, wire and cable and other industries, is generally a metal wire drawing machine, which belongs to the pre-processing equipment for the production of standard parts and other metal products. The purpose is to process the wire materials from metal product manufacturers through the wire drawing machine, so that the diameter, roundness, internal metallographic structure, surface finish and straightness of the wire materials meet the raw material processing requirements for the production of standard parts and other metal products. The wire drawing machine mainly includes a wire-releasing device, a wire-drawing device and a wire-receiving device. The metal wire is released by the wire-releasing device, and then it is drawn by the wire-drawing device. Then, the wire-receiving device reels the drawn metal wire.

[0003] For example, a diamond wire busbar drawing machine on the market includes a chassis, a wire-releasing device, a heating device, a tower wheel, a shaping device and a wire-receiving device. The wire-releasing device, the heating device, the tower wheel, the shaping device and the wire-receiving device are arranged on the chassis in sequence along the wire-drawing direction, and a first wire guide wheel and a lubricating adding groove are provided between the wire-releasing device and the heating device, and a wire drawing die and a second wire guide wheel are provided between the heating device and the tower wheel. The diamond wire busbar is installed on the wire-releasing device, and passes through the first wire guide wheel, the lubricating adding groove, the heating device, the wire drawing die, the second wire guide wheel, the tower wheel and the shaping device to the wire-receiving device in sequence, and the diamond wire busbar goes back and forth between the first wire guide wheel and the tower wheel for several times, and a control box for controlling the heating device, the tower wheel and the wire-receiving device is also provided on the chassis. In addition, the wire-releasing device uses a damping regulator to adjust the rotation speed of the wire-releasing wheel.

[0004] In actual use, especially when drawing finer wires, it is easy for the wire drawing process to fail (such as wire breakage or wire quality defects) due to tension changes and unsatisfactory balance among wire release speed, drawing speed and wire collection speed. It is difficult to ensure the quality of wire drawing. If the failure rate of the wire drawing equipment is high during operation, it will inevitably affect the wire drawing efficiency of the wire drawing equipment.

[0005] In addition, the pay-off mechanism of some wire drawing machines includes a pay-off wheel, a swing wheel and multiple wire wheels. The pay-off wheel uses a magnetic powder clutch to realize passive pay-off. The multiple wire wheels are generally fixed pulleys. When paying off the wire, the swing wheel will have a different angle from the horizontal direction as the rotating arm swings. In addition, when the wire is output from the swing wheel and wound around the next wire wheel, the extension direction (slope) of the wire will also change, resulting in a sharp change in tension, which will lead to stage-by-stage quality defects of the wire. Even if a guide wheel is designed as a floating tension wheel, the floating of the floating tension wheel will also cause the extension direction (slope) of the wire to change, which will also cause tension changes, and there is still a hidden danger of causing stage-by-stage quality defects of the wire.

[0006] In addition, the wire-taking mechanism of some wire drawing machines includes a guide wheel, a tension-adjusting wheel and a wire-taking wheel. The tension-adjusting wheel can swing, and an angle sensor plus a counterweight mechanism is used to adjust the tension of the wire-taking mechanism. However, the counterweight mechanism has large inertia, and the adjustment is not fast enough and the response time is long, which is not conducive to the stability of the wire drawing quality. There is a risk of periodic quality defects of the wire due to tension changes. In particular, if thinner wires are drawn, the quality defects are more obvious, and it is difficult to meet the needs of drawing thinner wires.

[0007] Therefore, it is necessary to study a new technical solution to solve the above problems. Summary of the invention

[0008] In view of this, the present invention aims to address the deficiencies in the prior art, and its main purpose is to provide an automatic wire drawing equipment for intelligent production. The pay-off speed, wire drawing speed, wire taking-up speed, and the tension conditions at the pay-off end and wire taking-up end can be understood in real time and intelligently controlled to ensure that the wire tension is quickly adjusted to remain consistent, the pay-off speed and the wire taking-up speed are iteratively balanced, and the wire taking-up speed and the wire drawing speed are consistent. The automatic wire drawing equipment has good operating stability and an extremely low failure rate in the wire drawing process, which can meet the needs of drawing finer wires.

[0009] To achieve the above purpose, the present invention adopts the following technical solutions: An automatic wire drawing device for intelligent production, comprising a wire-releasing mechanism, a wire furnace, a mold furnace, a wire-drawing mechanism, a wire-receiving mechanism and a control system, wherein the control system is respectively connected to the wire-releasing mechanism, the wire furnace, the mold furnace, the wire-drawing mechanism and the wire-receiving mechanism; The pay-off mechanism includes a pay-off wheel, a swing pulley, a buffer pulley, and a pay-off speed measuring pulley; the pay-off wheel is driven by a pay-off servo motor to pay-off the wire; the buffer pulley can float up and down linearly, and is equipped with a floating detection sensor; the pay-off speed measuring pulley is equipped with a first speed measuring sensor; The wire-taking mechanism includes a wire-taking wheel and a wire-taking servo motor for driving the wire-taking wheel to rotate; a tension speed measuring mechanism is also provided on the wire-entry side of the wire-taking mechanism, and the tension speed measuring mechanism includes a first guide pulley and a speed measuring pulley after pulling, the first guide pulley is connected to a second swing arm, the second swing arm is connected to a torque control servo motor, and the first guide pulley rotates and swings up and down along with the second swing arm; the encoder of the torque control servo motor knows the current angle of the second swing arm in real time; the speed measuring pulley after pulling is configured with a second speed measuring sensor; The pay-off servo motor, the floating detection sensor, the speed sensor, the take-up servo motor, the torque control servo motor, and the second speed sensor are respectively connected to a control system; the control system controls the pay-off speed of the pay-off servo motor in real time according to the floating condition of the buffer pulley; at the same time, the control system controls the torque control servo motor to provide corresponding torque according to the current angle of the second swing arm, and controls the rotation speed of the take-up servo motor according to the angle change trend of the second swing arm and the wire drawing speed fed back by the second speed sensor.

[0010] As a preferred solution, the swing pulley is connected to a first swing arm, one end of the first swing arm is connected to the swing pulley, and the other end of the first swing arm is provided with a swing center, and the swing pulley rotates and swings horizontally along with the first swing arm around the upper and lower axes where the swing center is located; the left vertical tangent on the winding circle of the buffer pulley, the right vertical tangent on the winding circle of the swing pulley, and the upper and lower axes where the swing center is located coincide with each other.

[0011] As a preferred solution, after the wire is released from the pay-off wheel, it passes through the swing pulley, the buffer pulley and the pay-off speed measuring pulley in sequence; then, the wire passes through the wire furnace, the mold furnace, and the wire drawing mechanism; then, the wire passes through the speed measuring pulley after drawing and returns to the take-up mechanism, and then passes through the first guide pulley and is wound onto the take-up wheel.

[0012] As a preferred solution, according to the feedback of the first speed sensor, the control system calculates the remaining time of the drawing operation from the length of the wire material.

[0013] As a preferred solution, the control system determines the operating state of the automatic wire drawing equipment according to the speed difference fed back by the first speed sensor and the second speed sensor.

[0014] As a preferred solution, a front guide wheel group is further provided on the wire entry side of the wire furnace, and a rear guide wheel group is further provided on the wire exit side of the mold furnace. The front guide wheel group and the rear guide wheel group are both provided with a plurality of wire grooves arranged in parallel along the front and rear spacing, and the wire grooves extend left and right. The wire grooves on the front guide wheel group and the rear guide wheel group are arranged one by one to correspond to each other so as to be located on the same straight line. During wire drawing, the front guide wheel group and the rear guide wheel group are used to position the wire passing path, so that the wire remains in a straight state in the wire furnace and during the drawing process, thereby preventing the wire from generating torsional stress.

[0015] As a preferred solution, the left and right ends of the wire furnace are provided with corresponding through-wire grooves on the left and right, a first heater and a thermal insulation material piece are provided in the wire furnace, a plurality of grooves are recessed downward on the top of the thermal insulation material piece, the first heater is sunken into the grooves of the thermal insulation material piece, the top of the first heater is lower than the top of the thermal insulation material, and the bottom surface of the wire groove is flush with or slightly higher than the top of the thermal insulation material piece.

[0016] As a preferred solution, a mold frame and a second heater are provided in the mold furnace, and a plurality of wire drawing die blocks are provided on the mold frame. The wire drawing die blocks are provided with die holes extending through left and right, and all the die holes are arranged along the front and rear spacing, and are arranged in a gradually smaller manner along the front and rear direction; the plurality of wire drawing die blocks are arranged in multiple rows on the left and right sides, so that: when viewed from the left or right angles, the plurality of wire drawing die blocks overlap and are misaligned front and back.

[0017] As a preferred scheme, the wire drawing mechanism includes a wire drawing motor and a wire drawing wheel driven by the wire drawing motor, and the wire drawing wheel is a straight cylindrical wheel; the wire drawing mechanism also includes a wire drawing reducer, a base, and a rolling bearing; the rolling bearing is embedded in the interior of the base, and the wire drawing wheel is fixed by the rolling bearing. The tail end of the wire drawing wheel is connected to the wire drawing reducer, and the wire drawing motor provides power to drive the wire drawing wheel to rotate through the reducer. The head of the wire drawing wheel is made into a cantilever structure for wire winding, and the wire is wound around the wire drawing wheel, and the friction between the wire and the circumferential surface of the wire drawing wheel provides continuous drawing force to the wire.

[0018] As a preferred solution, the other end of the first swing arm is arranged on the pay-off frame, and the swing pulley rotates and swings horizontally along with the first swing arm relative to the pay-off frame around the upper and lower axes where the swing center is located; the first swing arm is provided with a first swing angle limiting portion, and the pay-off frame is provided with a second swing angle limiting portion, the first swing angle limiting portion and the second swing angle limiting portion limit each other to limit the swing angle range of the first swing arm relative to the pay-off frame, and the forward and backward swinging angles of the swing pulley are less than 45 degrees.

[0019] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical scheme that it is mainly through the setting of the wire-releasing mechanism, the wire-reeling mechanism and the tension speed measuring mechanism. The control system controls the wire-releasing speed of the wire-releasing servo motor in real time according to the floating condition of the buffer pulley fed back by the floating detection sensor. At the same time, the control system controls the torque control servo motor to provide corresponding torque according to the current angle of the second swing arm, and controls the rotation speed of the wire-reeling servo motor according to the angle change trend of the second swing arm and the wire drawing speed fed back by the second speed measuring sensor. In this way, in the dynamic process of wire drawing, the wire-releasing speed, the wire drawing speed, the wire-reeling speed and the tension conditions at the wire-releasing end and the wire-reeling end can be understood in real time and intelligently controlled to ensure that the wire tension is quickly adjusted to remain consistent, the wire-releasing speed and the wire-reeling speed are iteratively balanced, and the wire-reeling speed and the wire drawing speed are consistent. The automatic wire drawing equipment has good operating stability and an extremely low failure rate in the wire drawing process, which meets the needs of drawing finer wires.

[0020] In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a front view of an automatic wire drawing device for intelligent production according to an embodiment of the present invention; Figure 2 It is a top view of an automatic wire drawing device for intelligent production according to an embodiment of the present invention; Figure 3 yes Figure 2 A partial enlarged view of Figure 4 is a three-dimensional diagram of a wire-releasing mechanism according to an embodiment of the present invention; Figure 5 is an exploded view of a wire-releasing mechanism according to an embodiment of the present invention; Figure 6 is another perspective view of the wire-releasing mechanism of an embodiment of the present invention (the motor housing is not shown); Figure 7 It is a partial diagram of the pay-off mechanism of the embodiment of the present invention in a top view (mainly used to show the swing angle range of the swing pulley); Figure 8 is a three-dimensional diagram of a wire lubrication system according to an embodiment of the present invention; Fig. 9 It is a left side view of the wire furnace according to the embodiment of the present invention; Fig.10 is a cross-sectional view of a wire furnace according to an embodiment of the present invention; Fig.11 is a three-dimensional diagram of a mold furnace according to an embodiment of the present invention; Fig.12 is a top view of a mold furnace according to an embodiment of the present invention (the mold furnace cover is not shown); Fig.13 yes Fig.12 Cross-section at AA; Fig.14 is a three-dimensional diagram of a wire drawing mechanism according to an embodiment of the present invention; Fig.15 yes Fig.14 Cross-section at BB; Fig.16 It is a three-dimensional diagram of a tension speed measuring mechanism and a wire taking-up mechanism according to an embodiment of the present invention; Fig.17 is another stereoscopic diagram of the tension speed measuring mechanism and the wire taking-up mechanism according to an embodiment of the present invention; Fig.18 It is a wire winding diagram of the tension speed measuring mechanism and the wire taking-up mechanism according to an embodiment of the present invention.

[0022] Description of the accompanying symbols: pay-off mechanism 100, pay-off frame 101, pay-off wheel 102, swing pulley 103, buffer pulley 104, pay-off speed measuring pulley 105, guide pulley 106, winding area 107, pay-off servo motor 108, first swing arm 109, swing center 110, upper and lower axis L1, left vertical tangent L2, right vertical tangent L3, floating base 111, floating detection sensor 112, floating spring 113, cylinder 114, Vertical guide rail 115, slider 116, bottom plate 117, first vertical plate 118, second vertical plate 119, avoidance groove 120, L-shaped bracket 121, vertical arm 122, horizontal arm 123, folding edge 124, gap 125, first speed sensor 126, motor cover 127, frame 200, tension speed measuring mechanism 300 ', take-up mechanism 300, first guide pulley 301, speed measuring pulley 302 after pulling, second guide pulley 303, take-up wheel 304 , second swing arm 305, torque control servo motor 306, second speed sensor 307, wire take-up servo motor 308, reducer 309, wire arrangement motor 310, wire arrangement module 311, shaft 312, front guide wheel group 400, wire lubrication system 500, bottom box 501, upper cover 502, wire lubricator 503, wire lubrication groove 504, small hole 505, wire furnace 600, furnace body 601, furnace cover 602, guide shaft 603, linear bearing 604, push Hand 605, wire passing groove 606, heater 607, insulation material piece 608, groove 609, mold furnace 700, mold frame 701, heating tube 702, temperature sensor 703, temperature controller, insulation board 704, mold furnace cover 705, powder box 706, wire drawing die block 707, rear guide wheel group 800, wire forming mechanism 201, wire drawing mechanism 900, wire drawing motor 901, wire drawing reducer 902, base 903, wire drawing wheel 904, rolling bearing 905. DETAILED DESCRIPTION

[0023] Please refer to Figures 1 to 18 As shown, it shows the specific structure of an embodiment of the present invention.

[0024] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "up", "down", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are 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, and therefore cannot be understood as a limitation on the present invention.

[0025] An automatic wire drawing device for intelligent production is mainly used for drawing metal wires (such as molybdenum wires), drawing the metal wires from large wire diameters to smaller wire diameters. Of course, the roundness, internal metallographic structure, surface finish and straightness of the wires can also be adjusted as needed. In this embodiment, the automatic wire drawing device is mainly used for drawing molybdenum wires, and includes a wire-releasing mechanism, a wire furnace, a mold furnace, a wire-drawing mechanism, a wire-receiving mechanism and a control system, and the control system is respectively connected to the wire-releasing mechanism, the wire furnace, the mold furnace, the wire-drawing mechanism and the wire-receiving mechanism; The pay-off mechanism includes a pay-off wheel, a swing pulley, a buffer pulley, and a pay-off speed measuring pulley; the pay-off wheel is driven by a pay-off servo motor to pay-off the wire; the buffer pulley can float up and down linearly, and is equipped with a floating detection sensor; the pay-off speed measuring pulley is equipped with a first speed measuring sensor; The wire-taking mechanism comprises a wire-taking wheel and a wire-taking servo motor for driving the wire-taking wheel to rotate; a tension speed measuring mechanism is also arranged on the wire-entry side of the wire-taking mechanism, and the tension speed measuring mechanism comprises a first guide pulley and a speed measuring pulley after pulling; the first guide pulley is connected to a second swing arm, one end of the second swing arm is connected to the first guide pulley, the other end of the second swing arm is connected to a torque control servo motor, and the rotating shaft of the torque control servo motor is connected to the other end of the second swing arm, and the first guide pulley rotates and swings up and down along with the second swing arm around the front and rear axis where the other end of the second swing arm is located; the encoder of the torque control servo motor obtains the position of the rotating shaft in real time to understand the current angle of the second swing arm; the speed measuring pulley after pulling is configured with a second speed measuring sensor; The pay-off servo motor, the floating detection sensor, the speed sensor, the take-up servo motor, the torque control servo motor, and the second speed sensor are respectively connected to a control system; the control system controls the pay-off speed of the pay-off servo motor in real time according to the floating condition of the buffer pulley fed back by the floating detection sensor, so that the pay-off speed and the take-up speed are iteratively balanced; at the same time, the control system controls the torque control servo motor to provide corresponding torque according to the current angle of the second swing arm, and controls the rotation speed of the take-up servo motor according to the angle change trend of the second swing arm and the wire drawing speed fed back by the second speed sensor, so that the wire drawing speed is consistent with the wire drawing speed; in this way, the pay-off speed, the wire drawing speed, the take-up speed, and the tension conditions of the pay-off speed and the take-up speed at the pay-off end and the take-up end can be understood in real time and intelligently controlled to ensure that the wire tension is quickly adjusted to remain consistent, the pay-off speed and the take-up speed are iteratively balanced, and the take-up speed is consistent with the wire drawing speed. The automatic wire drawing equipment has good operating stability and an extremely low failure rate in the wire drawing process, which meets the needs of drawing finer wires.

[0026] Combination Figures 1 to 3 As shown, the automatic wire drawing equipment includes a frame 200 and a wire-releasing mechanism 100, a front guide wheel group 400, a wire lubrication system 500, a wire furnace 600, a mold furnace 700, a rear guide wheel group 800, a wire-making mechanism 201, a wire drawing mechanism 900, a tension speed measuring mechanism 300', a wire-receiving mechanism and a control system arranged on the frame 200. The wire-releasing mechanism 100, the front guide wheel group 400, the wire lubrication system 500, the wire furnace 600, the mold furnace 700, the rear guide wheel group 800, the wire drawing mechanism 900, the tension speed measuring mechanism 300', and the wire-receiving mechanism 300 are arranged in sequence from left to right (also referred to as being arranged in sequence along the wire drawing direction), and the wire-releasing mechanism 201 is correspondingly located at the front side of the rear guide wheel group 800. The control system is connected to the wire-releasing mechanism 100, the front guide wheel group 400, the wire lubrication system 500, the wire furnace 600, the mold furnace 700, the rear guide wheel group 800, the wire-forming mechanism 201, the wire drawing mechanism 900, the tension speed measuring mechanism 300', the wire-receiving mechanism 300 and other functional parts to monitor and control the real-time working conditions of each functional part. Figure 1 As shown, the control system is provided with a main console, which has a display screen (touch screen), multiple function keys (start key, stop key, emergency stop key, graphite emulsion switch key, silk switching key, wire furnace switch key, mold furnace switch key, etc.), wherein a temperature display panel is arranged above or beside the wire furnace switch key and the mold furnace switch key. By switching different function keys, more information can be displayed on the display screen, which is convenient for regulating and controlling different functional parts and real-time viewing and understanding.

[0027] The specific description is as follows: 1. About the Pay-off Mechanism 100 like Figures 4 to 7 As shown, the pay-off mechanism 100 includes a pay-off frame 101 and components such as a pay-off wheel 102, a swing pulley 103, a buffer pulley 104, a pay-off speed measuring pulley 105 and a guide pulley 106 arranged on the pay-off frame 101.

[0028] The pay-off wheel 102 has a winding area 107 extending forward and backward along the winding axis; the pay-off wheel 102 is connected to a pay-off servo motor 108, and the pay-off servo motor 108 drives the pay-off wheel 102 to rotate to achieve active pay-off, and a motor cover 127 is provided on the outer cover of the pay-off servo motor 108.

[0029] The swing pulley 103, the pulley in this article generally refers to a wheel with a groove (such as a V-shaped groove) around the periphery for passing the line and capable of rotating around an axis, and its rotating axis is extended forward and backward; the swing pulley 103 is connected to a first swing arm 109 defined as a first swing arm), one end of the first swing arm 109 is connected to the swing pulley 103, for example: one end of the first swing arm 109 is connected to the rotation center of the swing pulley 103, of course, if it is connected to an area other than the rotation center of the swing pulley 103, the other end of the first swing arm 109 is provided with a swing center 110, and the swing pulley 103 rotates and swings horizontally along with the first swing arm 109 around the upper and lower axes where the swing center 110 is located. ; The other end of the first swing arm 109 is arranged on the pay-off frame 101, and the swing pulley 103 rotates and swings horizontally with the first swing arm 109 relative to the pay-off frame 101 around the upper and lower axis L1 where the swing center 110 is located; wherein, a first swing angle limiting portion is provided on the first swing arm 109, and a second swing angle limiting portion is provided on the pay-off frame 101, when the first swing arm 109 rotates to a certain angle, the first swing angle limiting portion and the second swing angle limiting portion limit each other to limit the swing angle range of the first swing arm 109 relative to the pay-off frame 101, and the forward and backward swinging angles of the swing pulley 103 are less than 45 degrees.

[0030] The buffer pulley 104 has a rotating shaft extending forward and backward; the buffer pulley 104 can float linearly up and down; so that the wire always maintains a certain range of tension and reduces the shaking of the wire. The buffer pulley 104 is arranged below the swing pulley 103 and is displaced left and right with the swing pulley 103 (for example, the swing pulley 103 is located at the upper left, and the buffer pulley 104 is located at the lower right), and the left vertical tangent L2 on the winding circumference of the buffer pulley 104, the right vertical tangent L3 on the winding circumference of the swing pulley 103, and the upper and lower axes L1 where the swing center 110 is located, coincide with each other. In this way, when the swing pulley 103 swings to different angles, it can still ensure that the tension of the wire is diametrical with the pulley radial direction, preventing the generation of axial force components that cause the wires to rub against each other and damage the wires. The tension of the wire on the buffer pulley 104 will not change due to the change of the angle of the swing pulley 103, and the direction and size of the tension acting on the buffer pulley 104 remain consistent, which effectively solves the problem in the traditional technology that "the tension will change sharply as the angle between the rotating arm and the horizontal direction changes, and the floating of the floating tension wheel also causes the tension to change, thereby causing periodic quality defects of the wire."

[0031] In this embodiment, the buffer pulley 104 is connected to a floating base 111. The buffer pulley 104 and the floating base 111 float up and down in a synchronous linear manner. The floating base 111 is connected to a floating detection sensor 112. The floating detection sensor 112 is used to detect the floating condition of the buffer pulley 104, such as position, acceleration, speed and other parameters, and feed back to the control system. The control system controls the wire-releasing speed of the wire-releasing servo motor in real time according to the parameters fed back by the floating detection sensor 112, so that the wire-releasing speed and the drawing speed are iteratively balanced. The floating base 111 is connected to a tension maintaining structure, which includes a floating spring 113 and / or a cylinder 114 (in specific design, only one of the floating springs 113 and / or the cylinder 114 may be configured). Figures 2 to 4 The floating spring 113 or cylinder 114 on the top of the device can provide tension by using a constant tension spring, a constant compression spring, a cylinder (thrust or tension) or an ordinary tension spring or an ordinary compression spring according to customer needs. Usually, a constant tension spring or a constant compression spring is suitable for a single product of a customer with a clear wire drawing tension, and the product has a high tension requirement. The buffer pulley 104 ensures that the tension remains unchanged when floating, and the cylinder (thrust or tension) can be used for a variety of customers with different tension requirements and products with high tension requirements. The air pressure can be adjusted according to different tension requirements and the air pressure is kept constant. The cylinder is usually connected to a control system, and the settings can be adjusted on the control system. In addition, ordinary tension springs and ordinary compression springs are mainly suitable for products with low tension requirements. The tension adjustment can be achieved by matching the analog quantity of the floating detection sensor 112 with the wire release speed.

[0032] A vertical guide rail 115 is provided on the pay-off frame 101, and a slider 116 is provided on the floating base 111. The slider 116 is adapted to the vertical guide rail 115, and the slider 116 can slide linearly up and down along the vertical guide rail 115. Specifically, the pay-off frame 101 includes a bottom plate 117 and a plurality of vertical plates (for example, a first vertical plate 118 and a second vertical plate 119). The vertical plates are installed on the bottom plate 117. The entire pay-off mechanism 100 can be installed on the automatic wire drawing equipment through the bottom plate 117. The first vertical plate 118 is used to install the pay-off servo motor 108 and the pay-off wheel 102, and the second vertical plate 119 is used to install the buffer pulley 104, the guide pulley 106, and the pay-off speed measuring device. The pulley 105, the vertical guide rail 115 is arranged on the second vertical plate 119, the floating spring 113 can be arranged on the front side of the second vertical plate 119, and the cylinder 114 can be arranged on the rear side of the second vertical plate 119. Accordingly, an avoidance groove 120 is arranged on the second vertical plate 119, and the avoidance groove 120 is located beside the vertical guide rail 115 (for example, on the right side) for the connecting parts or parts of the floating base 111 and the cylinder 114 to pass through. The swing pulley 103 is installed and positioned by assembling an L-shaped bracket 121 on the second vertical plate 119. The L-shaped bracket 121 includes a vertical arm 122 and a horizontal arm 123 connected to the top of the vertical arm 122. The vertical arm 122 is installed on the second vertical plate 119. The horizontal arm 123 extends to the left beyond the left side of the second vertical plate 119. A rotation connection point for the other end of the first swing arm 109 is provided on the horizontal arm 123. Therefore, it is equivalent to that the first swing arm 109 swings relative to the horizontal arm 123. In this embodiment, an upwardly extending folded edge 124 is provided at the other end of the first swing arm 109. The left and right ends of the folded edge 124 serve as two first swing angle limit parts. When the swing pulley When the swing pulley 103 extends horizontally to the left and right in a top-view angle (the angle is 0 degrees at this time), a gap 125 is maintained between the folded edge 124 and the side of the horizontal arm 123. When the swing pulley 103 swings forward, it is inclined forward in a top-view angle, and the angle is θ1 at this time, and θ1 is less than 45 degrees. When the swing pulley 103 swings forward to a maximum angle, the right end of the folded edge 124 (also referred to as the first swing angle limiter on the right side) abuts against the side of the horizontal arm 123 for limitation. When the swing pulley 103 swings backward, it is inclined backward in a top-view angle, and the angle is θ2 at this time, and θ2 is less than 45 degrees. When the swing pulley 103 swings backward to a maximum angle, the left end of the folded edge 124 (also referred to as the first swing angle limiter on the left side) abuts against the side of the horizontal arm 123 for limitation.It can be understood that two positions with a left-right spacing are provided on the side of the horizontal arm 123 as two second swing angle limiting parts, so as to form a limit with the corresponding first swing angle limiting parts, thereby limiting the front and rear swing angle range of the swing pulley 103. In addition, the L-shaped bracket 121 and the second vertical plate 119 are manufactured and installed separately, and the position of the swing pulley 103 is adjusted by changing the design of the L-shaped bracket 121 (changing the structure of the L-shaped bracket 121 or its installation position on the second vertical plate 119).

[0033] The pay-off speed measuring pulley 105 has a rotating shaft extending forward and backward; the pay-off speed measuring pulley 105 is provided with a first speed measuring sensor 126 to detect the pay-off speed in real time. When applied to automatic wire drawing equipment, the remaining length of the wire material can be calculated in real time through the pay-off speed and the pay-off time, and then the remaining time of the drawing work can be calculated and displayed on the display screen. In addition, a take-up speed measuring pulley (this embodiment refers to the post-drawing speed measuring pulley 302 described below) can also be set in the take-up link of the automatic wire drawing equipment. In this way, according to the front and rear speed measurements (i.e., pay-off speed, wire speed after drawing), the control system determines the equipment operation status by the speed difference, such as whether the wire is broken, and alarms and / or displays the current operation status of the equipment on the display screen.

[0034] In this embodiment, the pay-off speed measuring pulley 105 is located on the right side of the buffer pulley 104 , for example, on the upper right side. The wire material is wound around the buffer pulley 104 and then around the pay-off speed measuring pulley 105 .

[0035] The guide pulley 106 has a rotating shaft extending forward and backward; the guide pulley 106 is located above the buffer pulley 104 and the pay-off speed measuring pulley 105, for example, the guide pulley 106 is located above the right side of the buffer pulley 104, and the guide pulley 106 is located above the left side of the pay-off speed measuring pulley 105. After the wire is released from the pay-off wheel 102, it passes through the swing pulley 103, the buffer pulley 104, the guide pulley 106 and the pay-off speed measuring pulley 105 in sequence. The right vertical tangent on the winding circumference of the buffer pulley 104 and the left vertical tangent on the winding circumference of the guide pulley 106 are coincident. The left and right horizontal spacing between the rotating shaft of the guide pulley 106 and the rotating shaft of the pay-off speed measuring pulley 105 is smaller than the sum of the winding radii of the guide pulley 106 and the pay-off speed measuring pulley 105, so that the guide pulley 106 and the pay-off speed measuring pulley 105 partially overlap in the up and down directions, and the wire material extends forward and downward from the right side of the guide pulley 106 and winds around the left side of the pay-off speed measuring pulley 105.

[0036] like Figure 7As shown, the wire on the pay-off wheel 102 extends obliquely from the left side to the upper right, then passes through the left side, top and right side of the swing pulley 103, and extends vertically downward from the right side of the swing pulley 103, then passes through the left side, bottom and right side of the buffer pulley 104, and extends vertically upward from the right side of the buffer pulley 104, then passes through the left side, top and right side of the pay-off speed measuring pulley 105, and extends obliquely to the lower left from the right side of the pay-off speed measuring pulley 105, then passes through the left side, bottom and right side of the guide pulley 106, and extends upward from the right side of the guide pulley 106. During the wire-releasing process, no matter how the swing pulley 103 swings and whether the buffer pulley 104 floats linearly up and down or changes its floating position, the wire material always keeps winding vertically downward from the right side of the swing pulley 103 to the left side of the buffer pulley 104, and the tension of the wire material does not change. The direction and magnitude of the tension acting on the buffer pulley 104 remain consistent, wire breakage is not likely to occur, and it is beneficial to the process stability of the wire drawing process, and the wire drawing quality can be better guaranteed.

[0037] It can be seen that the pay-off mechanism 100, through the arrangement of the pay-off wheel 102, the swing pulley 103 and the buffer pulley 104, is actively paid off by the pay-off servo motor, and the buffer pulley 104 can float up and down in a straight line, and the left vertical tangent on the winding circle of the buffer pulley 104, the right vertical tangent on the winding circle of the swing pulley 103, and the upper and lower axes where the swing center 110 is located, are coincident, and the tension of the wire on the buffer pulley 104 will not change due to the angle change of the swing pulley 103, and the direction and size of the tension of the wire acting on the buffer pulley 104 remain consistent, effectively solving the problem in the traditional technology that "the tension will change sharply due to the different angles of the rotating arm and the horizontal direction, and the floating of the floating tension wheel will also cause the tension to change, thereby causing periodic quality defects of the wire." Furthermore, by providing a first swing angle limiter on the first swing arm 109 and a second swing angle limiter on the pay-off frame 101, when the first swing arm 109 rotates to a certain angle, the first swing angle limiter and the second swing angle limiter limit each other to limit the swing angle range of the first swing arm 109 relative to the pay-off frame 101, thereby ensuring that the tension of the wire is radially the same as the pulley, and preventing the generation of axial force component that causes friction between wires and damage to the wires.

[0038] 2. About the front guide wheel set 400 and the rear guide wheel set 800 like Figure 3As shown, the front guide wheel set 400 and the rear guide wheel set 800 are mainly used to position the wire through the path. The front guide wheel set 400 is located on the left side of the wire lubrication system 500, and the rear guide wheel set 800 is located on the right side of the mold furnace 700, so that the wire can maintain a straight state in the wire furnace 600 and during the drawing process, preventing the wire from generating twisting stress.

[0039] The front guide wheel group 400 and the rear guide wheel group 800 are both provided with a plurality of wire grooves (for example, 12 grooves) arranged in parallel along the front-to-back spacing, and these wire grooves are extended left and right. Usually, the wire grooves on the front guide wheel group 400 and the rear guide wheel group 800 are arranged one by one correspondingly to be located on the same straight line, so that after the wire passes through a wire groove on the front guide wheel group 400 to the right, it passes through the wire lubrication system 500, the wire furnace 600, the mold furnace 700 in sequence, and then passes through the corresponding wire groove on the rear guide wheel group 800, and then goes around the wire drawing mechanism 900 from the top to the right (specifically, it goes around the top of the wire drawing wheel), and then goes around from the bottom of the wire drawing mechanism 900 (specifically, it goes around the bottom of the wire drawing wheel) to the left and returns to the front guide wheel group in sequence. 400, the wire is suspended and straightened between the bottom of the wire drawing wheel and the bottom of the front guide wheel group 400. The wire passes through the adjacent wire groove at the bottom of the front guide wheel group 400 (the adjacent wire groove refers to another wire groove adjacent to the aforementioned wire groove), and extends to the right along the left side and top of the front guide wheel group 400, and then passes through the wire lubrication system 500, the wire furnace 600, and the mold furnace 700 in turn, and then passes through the corresponding adjacent wire grooves on the rear guide wheel group 800, and then goes back to the front guide wheel group 400 from the bottom of the wire drawing mechanism 900 (specifically, bypassing the bottom of the wire drawing wheel) to the left in turn, and repeats this cycle until it bypasses the last set of wire grooves of the front guide wheel group 400 and the rear guide wheel group 800. Figure 2 and Figure 3 As shown, it shows that the wire material is from a set of wire grooves at the rear end of the front guide wheel group 400 and the rear guide wheel group 800, and keeps circulating around a set of wire grooves at the front end of the front guide wheel group 400 and the rear guide wheel group 800. In addition, the front guide wheel group 400 and the rear guide wheel group 800 also play the role of guiding the turning of the wire material and reducing the relative friction between the wire material and the wheel.

[0040] 3. About the Chemical Silk Organization 201 The wire-forming mechanism 201 is an electrolysis device, and the wire-forming mechanism 201 includes a transformer, an electrode, a container, and an electrolyte. The electrolyte can be a salt water or other electrolyte commonly used by those skilled in the art. A section of metal wire is immersed in the electrolyte for electrolysis, and current flows from the electrode to the metal wire. The metal wire loses electrons in the solution and undergoes an oxidation reaction, corroding the surface layer to become thinner, so that it can pass through the fine holes of the wire drawing die.

[0041] 4. About Wire Lubrication System 500 like Figure 8 As shown, the wire lubrication system 500 includes a bottom box 501, an upper cover 502, a wire lubricator 503, a water pump and a lubricant storage container. The wire lubricator 503 is arranged in the bottom box 501, and the upper cover 502 can be opened and closed on the bottom box 501. The wire lubricator 503 is provided with a plurality of lubricating grooves 504 (for example, 12 grooves) arranged along the front and rear spacing. The lubricating grooves 504 extend left and right, and small holes 505 are provided at the bottom of the lubricating grooves 504. These small holes 505 penetrate downward into the connecting cavity inside the wire lubricator 503.

[0042] When in use, the lubricant (such as graphite emulsion) in the lubricant storage container is continuously pumped into the connecting cavity of the wire lubricator through a water pump, and the lubricant emerges from the small hole in the middle of the bottom of the lubricating groove and gathers in the lubricating groove. The wire passes through the lubricating groove and combines with the lubricant, so that the surface of the wire is coated with a layer of lubricant to protect the wire from oxidation due to exposure to air during the subsequent heating process of the wire furnace 600. In addition, when the wire passes through the wire drawing die, the lubricant protects the surface of the wire and reduces the friction between the wire and the wire drawing die, thereby improving the smoothness of the wire surface after drawing and reducing the wear of the wire drawing die. The water pump works continuously, and the lubricant in the lubricating groove overflows into the bottom box and flows back to the lubricant storage container from the liquid outlet of the bottom box.

[0043] 5. About Silk Furnace 600 like Fig. 9 and Fig.10As shown, the wire furnace 600 includes a furnace body 601 and a furnace cover 602. The furnace cover is opened by a flat push method, which is more convenient and labor-saving than a flip-cover opening method, and has a simpler structure and lower cost. Specifically, a guide shaft 603 extending forward and backward is provided at the rear end of the furnace body, and a linear bearing 604 is connected to the furnace cover, and the linear bearing is adapted to the guide shaft. A push handle 605 is provided on the top of the furnace cover, so that the furnace cover can be pushed forward and backward, and the furnace body can be exposed by pushing it backward, and the furnace body can be covered by pushing it forward. The left and right ends of the furnace body are provided with corresponding through-wire grooves 606, and a heater 607 (defined as the first heater) and a heat-insulating material piece 608 are provided in the furnace body. The top of the heat-insulating material piece is concave with a plurality of grooves 609, and the heater is sunk into the grooves of the heat-insulating material piece. The top of the heater (referring to a plurality of heating wires or heating strips) is lower than the top of the heat-insulating material, and the bottom surface of the through-wire groove is flush with or slightly higher than the top of the heat-insulating material piece to maintain a safe distance. In this way, the heater can be isolated, and in emergency situations (such as wire breakage), a short circuit between the wire and the heater can be prevented to cause danger. Moreover, the heat is uniform and the heat-insulating effect is better. Usually, a top heat-insulating layer is provided at the bottom of the furnace cover. In this way, for the heater, a heat-insulating layer is provided in all directions.

[0044] 6. About Mold Furnace 700 like Figures 11 to 13As shown, the mold furnace 700 is a wire drawing die, which includes a mold frame 701, a heating tube 702 (or other heating elements such as heating wires, defined as a second heater), a temperature sensor 703, a temperature controller, a heat preservation plate 704, a mold furnace cover 705 and a powder box 706. A plurality of wire drawing die blocks 707 are arranged on the mold frame, and a die hole extending left and right is arranged in the wire drawing die block. The powder box is located below the plurality of wire drawing die blocks, and the bottom of the die hole is hollowed out to facilitate the lubricant residue generated during the wire drawing process to fall into the powder box. Mounting holes are reserved on the mold frame, and each wire drawing die block is embedded in each mounting hole. By replacing different wire drawing die blocks (die aperture change design), a mold furnace 700 with different requirements can be obtained. In this embodiment, there are 12 wire drawing die blocks. From the back to the front, the sizes of the 12 die holes are gradually reduced. The 12 wire drawing die blocks are arranged in two rows (or multiple rows) on the left and right. When viewed from the left or right angle, several wire drawing die blocks overlap and stagger front and back, which can make the die arrangement more compact and reduce the spatial arrangement of the equipment. The heating tube and temperature sensor are directly embedded in the mold frame, which has a simple and reasonable structure, fast heating, high efficiency, and automatic temperature control using the temperature sensor; insulation plates are set around and on the bottom of the mold frame, and the mold furnace 700 cover is set on the upper side of the mold frame and can be opened and closed by flipping up and down. An insulation plate is also set at the bottom of the mold furnace 700 cover. By using heating tubes with multiple temperature zones, the temperature difference of the 12 die holes on the die frame is made less than ±5°C. After the wire is heated and softened by the wire furnace 600, it passes through the die hole of the wire drawing die. The wire is squeezed and deformed by the die and gradually becomes thinner. The center of the wire coincides with the center of the die hole, which prevents the die from being subjected to radial force, making the die more durable. Since the wire can be kept in a straight line in the wire furnace 600 and during the drawing process, the wire is prevented from generating torsional stress, so that the product silk is stable and does not shrink, thereby improving the quality. 7. About Wire Drawing Mechanism 900 like Fig.14 and Fig.15 As shown, the wire drawing mechanism 900 includes a wire drawing motor 901, a wire drawing reducer 902, a base 903, a wire drawing wheel 904, and a rolling bearing 905; the base is used as a support for the entire mechanism and for installation and fixing. A rolling bearing is embedded inside the base, and the wire drawing wheel is fixed by the rolling bearing. The tail end of the wire drawing wheel is connected to the wire drawing reducer, and the wire drawing motor provides power to drive the wire drawing wheel to rotate through the reducer, reducing the number of components such as synchronous wheels and synchronous belts. The structure is simple, and the head of the wire drawing wheel is a cantilever structure for easy wire winding. The wire drawing wheel is a straight cylindrical wheel, and the wire is wound around the wire drawing wheel. The friction between the wire and the circumferential surface of the wire drawing wheel provides a continuous drawing force to the wire, so that the wire passes through the wire drawing die continuously and at a uniform speed, and a wire of stable quality is obtained.

[0045] 8. About the tension speed measuring mechanism 300' and the wire taking-up mechanism 300 like Figures 16 to 18As shown, the wire-receiving mechanism 300 controls the wire-receiving speed based on the tension speed measuring mechanism 300', that is, the wire-receiving mechanism 300 is dynamically controlled based on the tension maintaining and wire drawing speed measuring functions of the tension speed measuring mechanism 300'. The tension speed measuring mechanism 300' includes a first guide pulley 301, a post-drawing speed measuring pulley 302, a second guide pulley 303 and other components, and the wire-receiving mechanism 300 includes a wire-receiving wheel 304 and other components.

[0046] The first guide pulley 301 has a rotating shaft extending forward and backward; the first guide pulley 301 is connected to a second swing arm 305 (defined as a second swing arm) extending laterally, one end of the second swing arm 305 is connected to the first guide pulley 301, the other end of the second swing arm 305 is connected to a torque control servo motor 306, and the rotating shaft 312 (extending forward and backward) of the torque control servo motor 306 is connected to the other end of the second swing arm 305, the first guide pulley 301 rotates and swings up and down along with the second swing arm 305 around the front-rear axis L where the other end of the second swing arm 305 is located; the encoder of the torque control servo motor 306 obtains the position of the rotating shaft 312 in real time to understand the current angle of the second swing arm 305.

[0047] The post-drawing speed measuring pulley 302 is located below the first guide pulley 301 . After the wire passes through the post-drawing speed measuring pulley 302 , it passes through the first guide pulley 301 . The speed measuring pulley 302 after drawing has a rotating shaft extending forward and backward; the speed measuring pulley 302 after drawing is configured with a second speed measuring sensor 307 to detect the drawing speed after drawing. In actual use, it can also cooperate with the pay-off speed, and the control system can compare and infer the wire diameter after drawing. The inferred wire diameter is compared with the target wire diameter in real time to monitor and evaluate whether the real-time wire diameter meets the standard (or is understood as: within the standard range). Specifically, based on the wire equal volume principle πR1².L1=πR2².L2, it is deduced that: πR1².V1t=πR2².V2t, wherein R1 is the wire radius at the pay-off end (i.e.: the original wire radius), L1 is the pay-off length, L2 is the take-up length, V1 is the speed of the pay-off speed measuring pulley 105, R2 is the wire radius at the take-up end (i.e.: the wire radius after drawing), and V2 is The speed of the speed measuring pulley 302 after drawing is R2²=πR1².V1t / (π.V2t). In this way, the diameter R2 of the wire after drawing can be calculated. The control system can monitor whether the wire radius R2 after drawing is within the qualified range. If it does not meet the standard, an alarm can be issued and / or the real-time wire radius R2 can be displayed on the display screen. The operator can check and confirm the situation and then adjust the equipment as needed. In other embodiments, when it is evaluated that the real-time wire radius R2 does not meet the standard or is developing towards a trend of not meeting the standard, the control system can automatically adjust different mold temperatures and wire temperatures. By changing the different expansion of the mold hole and the different cooling and contraction of the wire after passing through the hole, different wire diameters are obtained. This adjustment method has a small change in the wire diameter and can be understood as a micro-adjustment. Based on real-time monitoring and real-time adjustment, it is beneficial to ensure that the wire diameter is within the qualified range. In addition, the wear of the last die (for example, in this embodiment, the die hole of the frontmost drawing die block 707) will also affect the wire radius R2. Therefore, the control system can also automatically analyze the wear of the last die from the wire radius R2. The analysis conclusion can be displayed in real time on the display screen or can be freely called up and checked by the staff to quickly understand the equipment status. If the aforementioned speed regulation scheme cannot solve the problem in time, the staff is reminded / required to check and verify the die wear, and replace the corresponding drawing die block 707 or repair the drawing die block 707.

[0048] The second guide pulley 303 has a rotating shaft extending forward and backward. The second guide pulley 303 is arranged at the upper right of the first guide pulley 301 , and the second guide pulley 303 is located at the upper left of the take-up wheel 304 .

[0049] The take-up wheel 304 (also called the take-up reel) has a winding area extending forward and backward along the winding axis; the take-up wheel 304 is connected to a take-up servo motor 308, which drives the take-up wheel 304 to rotate; the take-up servo motor 308 is usually connected to a reducer 309, which drives the take-up wheel 304 to rotate. After the wire is wound around the first guide pulley 301, it is wound around the second guide pulley 303 and then wound around the take-up wheel 304. The take-up wheel 304 is also connected to a forward and backward translation driving unit, which drives the take-up servo motor 308 and the take-up wheel 304 to translate forward and backward together, so that the wire is arranged forward and backward on the winding area, and the wire is neatly wound around the winding area. Typically, the forward and backward translation driving unit is a cable arrangement module 311 driven by a cable arrangement motor 310, which is called a linear module, a linear module, a rectangular coordinate robot, a linear slide, etc.

[0050] The torque control servo motor 306, the second speed sensor 307, and the wire-winding servo motor 308 are respectively connected to a control system. The control system controls the torque control servo motor 306 to provide corresponding torque according to the current angle of the second swing arm 305, so that the wire maintains a constant tension, and controls the rotation speed of the wire-winding servo motor 308 in real time according to the swinging and floating trend of the second swing arm 305 and the wire drawing speed, so that the wire-winding speed is consistent with the drawing speed. The torque control servo motor 306 is used to provide tension and feedback floating trends. Compared with the method of adding a rotating positioner (angle sensor) and a counterweight mechanism in the traditional technology, in the present invention, the torque control servo motor 306 can provide constant tension and short response time, overcome the shortcomings of the large inertia of the counterweight mechanism, such as insufficient adjustment and long response time, and can be better suitable for drawing finer wires. For example: the angle range of the second swing arm 305 is 30° to 180°. During automatic operation, the second swing arm 305 is set at a 90° position (such as Figure 4 As shown), the PLC of the control system detects the angular position of the second swing arm 305 in real time. When the angular position of the second swing arm 305 is greater than 90°, the wire-winding servo motor 308 is controlled to decelerate until the angle of the second swing arm 305 is close to the 90° position (a deviation value △θ is set, where close to 90° refers to 90°+△θ); when the position of the second swing arm 305 decreases (i.e., less than 90°), the wire-winding servo motor 308 is controlled to accelerate until the angle of the second swing arm 305 is close to the 90° position (a deviation value △θ is set, where close to 90° refers to 90°-△θ).

[0051] The arrangement of the post-pulling speed measuring pulley 302, the first guide pulley 301, the second guide pulley 303 and the wire take-up wheel 304 is conducive to smooth and stable wire take-up. Fig.18 As shown, after the wire drawing is completed, the wire is wound obliquely downward from the right side of the top of the wire drawing mechanism 900, wound in from the left side of the top of the speed measuring pulley 302 after drawing, and wound obliquely upward to the left side through the bottom of the speed measuring pulley 302 after drawing along the right side of the speed measuring pulley 302 after drawing, and then wound through the left side and the top of the wire drawing mechanism 900, and wound out obliquely downward from the right side of the top, then, the wire is wound in from the left side of the bottom of the first guide pulley 301, and wound out obliquely upward to the right side along the bottom of the first guide pulley 301, then, the wire is wound in from the left side of the top of the second guide pulley 303, and wound out obliquely downward to the right side along the top of the second guide pulley 303, then, the wire is wound in from the left side of the top of the take-up wheel 304, and wound toward the bottom along the right side of the take-up wheel 304.

[0052] In this way, the tension speed measuring mechanism 300' and the wire taking-up mechanism 300 are connected to the torque control servo motor 306 at the other end of the second swing arm 305, and the rotating shaft of the torque control servo motor 306 is connected to the other end of the second swing arm 305. The first guide pulley 301 rotates and swings up and down along with the second swing arm 305 around the front and rear axis where the other end of the second swing arm 305 is located. The encoder of the torque control servo motor 306 obtains the rotating shaft position in real time to understand the current angle of the second swing arm 305, and controls the torque control servo motor 306 to provide corresponding torque according to the current angle of the second swing arm 305, so that the wire maintains a constant tension. The torque control servo motor 306 has a short adjustment response time and can quickly adjust the torque to keep the wire at a constant tension. Furthermore, the rotation speed of the wire-taking servo motor 308 can be controlled in real time according to the swinging and floating trend of the second swing arm 305 and the wire drawing speed, so that the wire-taking speed is consistent with the drawing speed, thereby overcoming the shortcomings of insufficient adjustment and long response time caused by the large inertia of the counterweight mechanism, and being better suitable for drawing finer wires, which is beneficial to the stability of the wire drawing quality.

[0053] The automatic wire drawing equipment of this embodiment is combined with Figure 1-3 , Figure 7 as well as Fig.18 As shown: The wire on the pay-off wheel 102 extends obliquely from the left side to the upper right → passes through the left side, top and right side of the swing pulley 103, and extends vertically downward from the right side of the swing pulley 103 → passes through the left side, bottom and right side of the buffer pulley 104, and extends vertically upward from the right side of the buffer pulley 104 → passes through the left side, top and right side of the pay-off speed measuring pulley 105, and extends obliquely to the lower left from the right side of the pay-off speed measuring pulley 105 → passes through the left side, bottom and right side of the guide pulley 106, and extends upward from the right side of the guide pulley 106 → the wire passes to the right through a wire groove at the rear end of the front guide wheel group 400 → passes through the wire lubrication groove of the wire lubrication system 500 → the wire groove of the wire furnace 600 → the mold hole of the mold furnace 700 → passes through After passing through the corresponding rear end wire groove on the rear guide wheel group 800 → go around the top of the wire drawing wheel of the wire drawing mechanism 900 from the top to the right → go back to the front guide wheel group 400 from the bottom of the wire drawing wheel of the wire drawing mechanism 900 to the left in sequence, and the wire passes through the adjacent wire grooves at the bottom of the front guide wheel group 400 → passes through the adjacent lubrication grooves of the wire lubrication system 500 in sequence... and so on, until it bypasses the last set of wire grooves of the front guide wheel group 400 and the rear guide wheel group 800 → go around the top of the wire drawing wheel of the wire drawing mechanism 900 from the top to the right → bypass the speed measuring pulley 302 after drawing → bypass the left side and top of the wire drawing wheel of the wire drawing mechanism 900 → bypass the first guide pulley 301 → bypass the second guide pulley 303 → go around to the take-up wheel 304.

[0054] In addition, it should be noted that when the wire needs to pass through several (for example, 12) die holes of the mold furnace 700, the end of the wire is first placed in the wire-making mechanism 201 for electrolysis until the end of the wire is electrolyzed to the point where it can pass through the first die hole at the rear end with the largest aperture. After passing through the first die hole, the wire moves along the front guide wheel group 400 → wire lubrication system 500 → wire furnace 600 → mold furnace 700 → rear guide wheel group 800 → drawing wheel → front guide wheel group 400 → wire lubrication system 500 → wire furnace 600. The end of the wire is placed in the wire-making mechanism 201 for electrolysis for the second time until the end of the wire is electrolyzed to the point where it can pass through the second die hole with the second largest aperture. This cycle is repeated until the end of the wire passes through the 12th die hole at the front end with the smallest aperture. The end of the wire passes through the wire drawing mechanism 900 and the tension speed measuring mechanism 300', and is wound onto the wire taking-up mechanism 300. Then the automatic wire drawing equipment is started for automatic wire drawing.

[0055] In the present invention, the pay-off end, the drawing process, and the take-up end are optimized: 1. At the pay-off end, ensure that the wire tension (size and direction) remains consistent. At the same time, detect the pay-off speed in real time, detect the floating condition of the buffer pulley 104 (including position, acceleration, speed and other parameters), and feed back to the control system. The control system controls the pay-off speed of the pay-off servo motor 108 in real time according to the parameters fed back by the floating detection sensor 112, so that the pay-off speed and the drawing speed are iteratively balanced; 2. Using the front guide wheel group 400 and the rear guide wheel group 800 to position the wire through the path, so that the wire can maintain a straight state in the wire furnace 600 and during the drawing process, thereby preventing the wire from generating twisting stress; 3. At the wire-receiving end, the torque control servo motor 306 is used to provide corresponding torque according to the current angle of the second swing arm 305, which can quickly adjust the torque to keep the wire material at a constant tension, and can control the speed of the wire-receiving servo motor 308 in real time according to the swinging and floating trend of the second swing arm 305 and the wire drawing speed, so that the wire-receiving speed is consistent with the drawing speed; The application of this automatic wire drawing equipment has greatly improved the wire drawing quality and efficiency, and wire breakage is less likely to occur. The automatic wire drawing equipment operates stably, and the failure rate of the wire drawing process is extremely low, which meets the needs of drawing finer wires.

[0056] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An automatic wire drawing device for intelligent production, comprising a wire-releasing mechanism, a wire furnace, a mold furnace, a wire drawing mechanism, a wire-receiving mechanism and a control system, wherein the control system is respectively connected to the wire-releasing mechanism, the wire furnace, the mold furnace, the wire drawing mechanism and the wire-receiving mechanism; characterized in that: The pay-off mechanism includes a pay-off wheel, a swing pulley, a buffer pulley, and a pay-off speed measuring pulley; the pay-off wheel is driven by a pay-off servo motor to pay-off the wire; the buffer pulley can float up and down linearly, and is equipped with a floating detection sensor; the pay-off speed measuring pulley is equipped with a first speed measuring sensor; The wire-taking mechanism includes a wire-taking wheel and a wire-taking servo motor for driving the wire-taking wheel to rotate; a tension speed measuring mechanism is also provided on the wire-entry side of the wire-taking mechanism, and the tension speed measuring mechanism includes a first guide pulley and a speed measuring pulley after pulling, the first guide pulley is connected to a second swing arm, the second swing arm is connected to a torque control servo motor, and the first guide pulley rotates and swings up and down along with the second swing arm; the encoder of the torque control servo motor knows the current angle of the second swing arm in real time; the speed measuring pulley after pulling is configured with a second speed measuring sensor; The pay-off servo motor, the floating detection sensor, the speed sensor, the take-up servo motor, the torque control servo motor, and the second speed sensor are respectively connected to a control system; the control system controls the pay-off speed of the pay-off servo motor in real time according to the floating condition of the buffer pulley; at the same time, the control system controls the torque control servo motor to provide corresponding torque according to the current angle of the second swing arm, and controls the rotation speed of the take-up servo motor according to the angle change trend of the second swing arm and the wire drawing speed fed back by the second speed sensor.

2. The automatic wire drawing equipment for intelligent production according to claim 1, characterized in that: The swing pulley is connected to a first swing arm, one end of the first swing arm is connected to the swing pulley, and the other end of the first swing arm is provided with a swing center. The swing pulley rotates and swings horizontally along with the first swing arm around the upper and lower axes where the swing center is located; the left vertical tangent on the winding circle of the buffer pulley, the right vertical tangent on the winding circle of the swing pulley, and the upper and lower axes where the swing center is located coincide with each other.

3. The automatic wire drawing equipment for intelligent production according to claim 1 or 2, characterized in that: After the wire is released from the pay-off wheel, it passes through the swing pulley, the buffer pulley and the pay-off speed measuring pulley in sequence; then, the wire passes through the wire furnace, the mold furnace, and the wire drawing mechanism; then, the wire passes through the speed measuring pulley after drawing and returns to the take-up mechanism, and then passes through the first guide pulley and is wound onto the take-up wheel.

4. The automatic wire drawing equipment for intelligent production according to claim 1, characterized in that: According to the feedback from the first speed sensor, the control system calculates the remaining time of the drawing work from the length of the wire material.

5. The automatic wire drawing equipment for intelligent production according to claim 1, characterized in that: The control system determines the operating state of the automatic wire drawing equipment according to the speed difference fed back by the first speed sensor and the second speed sensor.

6. The automatic wire drawing equipment for intelligent production according to claim 1, characterized in that: The wire inlet side of the wire furnace is also provided with a front guide wheel group, and the wire outlet side of the mold furnace is also provided with a rear guide wheel group. The front guide wheel group and the rear guide wheel group are both provided with a plurality of wire grooves arranged in parallel along the front and rear spacing, and the wire grooves are extended left and right. The wire grooves on the front guide wheel group and the rear guide wheel group are arranged one by one to be located on the same straight line. During wire drawing, the front guide wheel group and the rear guide wheel group are used to position the wire through the path, so that the wire remains in a straight state in the wire furnace and during the drawing process, thereby preventing the wire from generating torsional stress.

7. The automatic wire drawing equipment for intelligent production according to claim 1, characterized in that: The left and right ends of the wire furnace are provided with corresponding through-wire grooves, and a first heater and a thermal insulation material piece are provided in the wire furnace. The top of the thermal insulation material piece is concave with a plurality of grooves, and the first heater is sunken into the grooves of the thermal insulation material piece. The top of the first heater is lower than the top of the thermal insulation material, and the bottom surface of the wire groove is flush with or slightly higher than the top of the thermal insulation material piece.

8. The automatic wire drawing equipment for intelligent production according to claim 1, characterized in that: A mold frame and a second heater are arranged in the mold furnace, and a plurality of wire drawing die blocks are arranged on the mold frame. The wire drawing die blocks are provided with die holes extending through left and right. All the die holes are arranged along the front and rear spacing, and are arranged to gradually decrease in the front and rear direction; the plurality of wire drawing die blocks are arranged in multiple rows left and right, so that: when viewed from the left or right angle, the plurality of wire drawing die blocks overlap and are misaligned front and back.

9. The automatic wire drawing equipment for intelligent production according to claim 1, characterized in that: The wire drawing mechanism includes a wire drawing motor and a wire drawing wheel driven by the wire drawing motor, and the wire drawing wheel is a straight cylindrical wheel; the wire drawing mechanism also includes a wire drawing reducer, a base, and a rolling bearing; the rolling bearing is embedded in the interior of the base, and the wire drawing wheel is fixed by the rolling bearing. The tail end of the wire drawing wheel is connected to the wire drawing reducer, and the wire drawing motor provides power to drive the wire drawing wheel to rotate through the reducer. The head of the wire drawing wheel is made into a cantilever structure for wire winding, and the wire is wound around the wire drawing wheel, and the friction between the wire and the circumferential surface of the wire drawing wheel provides continuous drawing force to the wire.

10. The automatic wire drawing equipment for intelligent production according to claim 2, characterized in that: The other end of the first swing arm is arranged on the pay-off frame, and the swing pulley rotates and swings horizontally with the first swing arm relative to the pay-off frame around the upper and lower axes where the swing center is located; a first swing angle limiting portion is arranged on the first swing arm, and a second swing angle limiting portion is arranged on the pay-off frame, and the first swing angle limiting portion and the second swing angle limiting portion limit each other to limit the swing angle range of the first swing arm relative to the pay-off frame, and the forward and backward swinging angles of the swing pulley are less than 45 degrees.

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