Automatic wire drawing equipment

Abstract

The utility model discloses automatic wire drawing equipment. The automatic wire drawing equipment comprises a rack as well as a pay-off mechanism, a front guide wheel set, a wire lubricating system, a wire furnace, a mold furnace, a rear guide wheel set, a wire drawing mechanism, a tension speed measuring mechanism and a take-up mechanism which are sequentially arranged on the rack from left to right, the system further comprises a control system. The pay-off mechanism comprises a pay-off rack, and a pay-off wheel, a swing pulley, a buffer pulley, a pay-off speed measurement pulley and a guide pulley which are arranged on the pay-off rack; the pay-off wheel is connected with a pay-off servo motor; the front guide wheel set and the rear guide wheel set are each provided with a plurality of wire grooves. A wire drawing wheel of the wire drawing mechanism is a straight cylinder wheel; the tension speed measurement mechanism comprises a first guide pulley, a post-drawing speed measurement pulley and a second guide pulley; the take-up mechanism comprises a take-up wheel and a take-up servo motor. Thus, the wire drawing quality and the wire drawing efficiency can be improved, the wire breaking phenomenon is not prone to occurring, and the automatic wire drawing equipment is stable in operation, extremely low in fault rate in the wire drawing machining process and capable of meeting the requirement for drawing finer wires.

Description

Technical Field

[0001] The utility model relates to the field of wire drawing equipment, in particular to an automatic wire drawing equipment. Background Art

[0002] Wire drawing machines (also known as wire drawing machines or wire drawing machines) are primarily used in the machinery manufacturing, hardware processing, and wire and cable industries. They are typically metal drawing machines, which are pre-processing equipment for the production of standard parts and other metal products. Their purpose is to draw wire from metal product manufacturers through the wire drawing machine, ensuring that the wire's diameter, roundness, internal metallographic structure, surface finish, and straightness meet the raw material processing requirements for the production of standard parts and other metal products. A wire drawing machine primarily consists of a pay-off device, a wire drawing device, and a wire take-up device. The wire is paid off by the pay-off device, then drawn by the wire drawing device. The wire is then reeled by the wire take-up device.

[0003] For example, a diamond wire busbar drawing machine on the market includes a chassis, a wire-paying device, a heating device, a tower pulley, a shaping device and a wire-taking device. The wire-paying device, the heating device, the tower pulley, the shaping device and the wire-taking device are arranged on the chassis in sequence along the wire drawing direction, and a first wire guide wheel and a lubrication adding groove are provided between the wire-paying 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 pulley. The diamond wire busbar is installed on the wire-paying device and passes through the first wire guide wheel, the lubrication adding groove, the heating device, the wire drawing die, the second wire guide wheel, the tower pulley and the shaping device to the wire-taking device in sequence, and the diamond wire busbar travels back and forth between the first wire guide wheel and the tower pulley several times. A control box for controlling the heating device, the tower pulley and the wire-taking device is also provided on the chassis. In addition, its wire-paying device uses a damping regulator to adjust the rotation speed of the wire-paying 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 guarantee the wire drawing quality. 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] Therefore, it is necessary to study a new technical solution to solve the above problems. Utility Model Content

[0006] 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 device, which is beneficial to improving the wire drawing quality and efficiency, and is less prone to wire breakage. The automatic wire drawing device has stable operation, an extremely low failure rate in the wire drawing process, and is suitable for the needs of drawing finer wires.

[0007] In order to achieve the above object, the utility model discloses the following technical scheme:

[0008] An automatic wire drawing equipment, including frame and setting in the frame from left to right wire laying mechanism, front guide wheel group, wire lubricating system, wire furnace, mould furnace, rear guide wheel group, wire drawing mechanism, tension speed measuring mechanism, take-up mechanism, still including control system, control system is connected wire laying mechanism wire lubricating system wire furnace mould furnace wire drawing mechanism tension speed measuring mechanism take-up mechanism respectively,

[0009] Wire laying mechanism includes wire laying frame and setting on wire laying frame wire laying wheel, swing pulley, buffer pulley, wire laying speed measuring pulley and guide pulley, wire laying wheel is connected with wire laying servo motor, and wire laying servo motor drives wire laying wheel rotation,

[0010] Front guide wheel group and rear guide wheel group are all provided with several guide grooves parallelly arranged along front-back interval, and the guide grooves are extended left and right, and the guide grooves on the front guide wheel group and the rear guide wheel group are sequentially arranged to be located on the same straight line,

[0011] Wire lubricating system is provided with several lubricating grooves arranged along front-back interval, and the lubricating grooves are extended left and right,

[0012] The left and right ends of the wire furnace are provided with left-right corresponding through wire separation grooves, and the wire furnace is provided with a first heater,

[0013] Second heater and several mould holes arranged along front-back interval are arranged in the mould furnace, the mould holes are extended left and right through, and the diameters of the several mould holes are sequentially arranged smaller along the front-back direction,

[0014] Wire drawing mechanism includes wire drawing motor and wire drawing wheel driven by wire drawing motor, and the wire drawing wheel is a straight cylinder wheel,

[0015] Tension speed measuring mechanism includes first guide pulley, drawing speed measuring pulley and second guide pulley,

[0016] Take-up mechanism includes take-up wheel, and the take-up wheel is connected with take-up servo motor, and the take-up servo motor drives the take-up wheel rotation.

[0017] As a preferred solution, the rotating shaft of the swing pulley extends forward and backward, the swing pulley is connected with a first swing arm, one end of the first swing arm is connected to the swing pulley, the other end of the first swing arm is provided with a swing center, the swing pulley rotates horizontally around the up-down axis where the swing center is located along with the swing arm; the rotating shaft of the buffer pulley extends forward and backward, the buffer pulley can float up and down linearly; the buffer pulley is arranged below the swing pulley and is left-right staggered with the swing pulley, and the left vertical tangent on the wire winding circumference of the buffer pulley, the right vertical tangent on the wire winding circumference of the swing pulley, and the up-down axis where the swing center is located are coincident; and the rotating shaft of the wire releasing and speed measuring pulley extends forward and backward; the wire releasing and speed measuring pulley is provided with a first speed measuring sensor.

[0018] As a preferred solution, the other end of the first swing arm is arranged on the wire releasing frame, the swing pulley rotates horizontally around the up-down axis where the swing center is located along with the first swing arm relative to the wire releasing frame; a first swing angle limiting part is arranged on the first swing arm, a second swing angle limiting part is arranged on the wire releasing frame, and the first swing angle limiting part and the second swing angle limiting part limit each other to limit the swing angle range of the first swing arm relative to the wire releasing frame, and the swing angle of the swing pulley forward and backward is less than 45 degrees.

[0019] As a preferred solution, the wire lubricating system comprises a bottom box, an upper cover, a wire lubricator, a water pump and a lubricant storage container, the wire lubricator is arranged in the bottom box, the upper cover is arranged on the bottom box in an openable and closable manner, a wire lubricating groove is arranged on the wire lubricator, a communication cavity is arranged in the wire lubricator, and a small hole penetrating through the communication cavity downward is arranged at the bottom of the wire lubricating groove; the water pump continuously pumps the lubricant in the lubricant storage container into the communication cavity, the lubricant comes out of the small hole and gathers in the wire lubricating groove, and the lubricant in the wire lubricating groove overflows into the bottom box and returns to the lubricant storage container from the liquid outlet return of the bottom box.

[0020] As a preferred solution, the wire furnace comprises a furnace body and a furnace cover, a forward and backward extending guide shaft is arranged at the rear end of the furnace body, a linear bearing is connected to the furnace cover, and the linear bearing is fitted on the guide shaft, so that the furnace cover is pushed forward and backward to open and close the furnace cover.

[0021] As a preferred solution, a heat preservation material piece is arranged in the wire furnace, a plurality of grooves are concave downward at the top of the heat preservation material piece, the first heater is sunk in the groove of the heat preservation material piece, the top of the first heater is lower than the top of the heat preservation material, and the bottom surface of the wire passing groove is flush with or slightly higher than the top of the heat preservation material piece.

[0022] As a preferred solution, the die furnace comprises a die frame, a plurality of wire drawing die blocks are arranged on the die frame, and the die holes are arranged in the wire drawing die blocks; the plurality of wire drawing die blocks are arranged in multiple rows left and right, so that the plurality of wire drawing die blocks are staggered front and back in the left view or the right view.

[0023] As a preferred solution, the wire drawing mechanism further comprises a wire drawing speed reducer, a base, and a rolling bearing; the rolling bearing is embedded in the inside of the base, the wire drawing wheel is fixed by the rolling bearing, the tail end of the wire drawing wheel is connected with the wire drawing speed reducer, the wire drawing motor provides power to drive the wire drawing wheel to rotate through the speed reducer, and the head of the wire drawing wheel is in a cantilever structure for wire winding.

[0024] As a preferred solution, the rotating shaft of the first guide pulley extends front and back, the first guide pulley is connected with 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 with a torsion control servo motor, the rotating shaft of the torsion control servo motor is connected to the other end of the second swing arm, and the first guide pulley rotates up and down around the front and back axis where the other end of the second swing arm is located with the second swing arm; the encoder of the torsion control servo motor obtains the position of the rotating shaft in real time to understand the current angle of the second swing arm, the control system controls the torsion control servo motor to provide corresponding torsion according to the current angle of the second swing arm; the rotating shaft of the post-drawing speed measuring pulley extends front and back, and the post-drawing speed measuring pulley is provided with a second speed measuring sensor.

[0025] As a preferred solution, the control system controls the rotating speed of the take-up servo motor in real time according to the angle change trend of the second swing arm fed back by the encoder and the wire drawing speed fed back by the second speed measuring sensor.

[0026] The utility model discloses an automatic wire drawing equipment, including wire feeding mechanism, wire drawing mechanism, wire collecting mechanism, wire drawing speed measuring mechanism, wire lubricating system, wire furnace, mould furnace and rear guide wheel group, wire feeding mechanism includes wire feeding frame, wire feeding wheel, swing pulley, buffer pulley, wire feeding speed measuring pulley and guide pulley, wire drawing speed measuring mechanism includes first guide pulley, wire drawing rear speed measuring pulley and second guide pulley, and the wire collecting pulley is driven to rotate by wire collecting servo motor, can detect wire feeding speed and wire collecting speed, simultaneously, utilize front guide wheel group and rear guide wheel group to be the wire material through path positioning, make wire material keep linear state in wire furnace and drawing process, prevent wire material and produce torsional stress, be favorable to promote wire drawing quality and wire drawing efficiency, and wire breakage phenomenon is not easy to appear, this automatic wire drawing equipment is stable in operation, and wire drawing processing process failure rate is extremely low, adapts the demand of drawing thinner wire material.

[0027] In order to more clearly set forth the structural features and efficacy of the utility model, below, combining with the specific embodiment and the detailed description of the utility model are carried out to the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is the front view of automatic wire drawing equipment of the embodiment of the utility model;

[0029] Figure 2 It is the plan view of automatic wire drawing equipment of the embodiment of the utility model;

[0030] Figure 3 It is Figure 2 The partial enlarged view of;

[0031] Figure 4 It is the perspective view of wire feeding mechanism of the embodiment of the utility model;

[0032] Figure 5 It is the exploded view of wire feeding mechanism of the embodiment of the utility model;

[0033] Figure 6 It is another perspective view of wire feeding mechanism of the embodiment of the utility model (not show motor cover);

[0034] Figure 7 It is the partial view of wire feeding mechanism of the embodiment of the utility model under the planar state ( mainly used to show the swing angle range of swing pulley);

[0035] Figure 8 It is the perspective view of wire lubricating system of the embodiment of the utility model;

[0036] Figure 9 It is the left view of wire furnace of the embodiment of the utility model;

[0037] Figure 10 is a sectional view of a wire furnace of an embodiment of the present application;

[0038] Figure 11 is a perspective view of a die furnace of an embodiment of the present application;

[0039] Figure 12 is a top view of the die furnace of an embodiment of the present application (the die furnace cover is not shown);

[0040] Figure 13 is Figure 12 a cross-sectional view at A-A;

[0041] Figure 14 is a perspective view of a wire drawing mechanism of an embodiment of the present application;

[0042] Figure 15 is Figure 14 a cross-sectional view at B-B;

[0043] Figure 16 is a perspective view of a tension speed measuring mechanism and a take-up mechanism of an embodiment of the present application;

[0044] Figure 17 is another perspective view of the tension speed measuring mechanism and the take-up mechanism of an embodiment of the present application;

[0045] Figure 18 is a wire winding diagram of the tension speed measuring mechanism and the take-up mechanism of an embodiment of the present application.

[0046] Figure identification: pay-off mechanism 100, pay-off rack 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, air cylinder 114, vertical guide rail 115, sliding block 116, bottom plate 117, first vertical plate 118, second vertical plate 119, avoidance groove 120, L-shaped support 121, vertical arm 122, horizontal arm 123, folded edge 124, gap 125, first speed measuring sensor 126, motor housing 127, rack 200, take-up mechanism 300', take-up mechanism 300, first guide pulley 301, post-drawing speed measuring pulley 302, second guide pulley 303, take-up wheel 304, second swing arm 305, torsion control servo motor 306, second speed measuring sensor 307, take-up servo motor 308, speed reducer 309, wire arranging motor 310, wire arranging module 311, rotating shaft 312, front guide wheel set 400, wire lubricating system 500, bottom box 501, upper cover 502, wire lubricator 503, wire lubricating 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 separation groove 606, heating device 607, heat preservation material 608, groove 609, die furnace 700, die rack 701, heating pipe 702, temperature sensor 703, temperature controller, heat preservation plate 704, die furnace cover 705, powder box 706, wire drawing die block 707, rear guide wheel set 800, wire melting mechanism 201, wire drawing mechanism 900, wire drawing motor 901, wire drawing speed reducer 902, base 903, wire drawing wheel 904, rolling bearing 905. DETAILED DESCRIPTION

[0047] Please refer to Figures 1 to 18 The specific structure of the embodiment of the present application is shown.

[0048] In the description of the present application, it should be pointed out that the terms "upper", "lower", "left", "right" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application.

[0049] An automatic wire drawing device includes a pay-off mechanism, a wire drawing mechanism, and a wire take-up mechanism. The device is primarily used for drawing metal wire (e.g., molybdenum wire) from a large diameter to a smaller diameter. Furthermore, the device can also adjust the wire's roundness, internal metallographic structure, surface finish, and straightness as needed. In this embodiment, the device is primarily used for drawing molybdenum wire.

[0050] The automatic wire drawing equipment includes a frame 200 and a wire payout mechanism 100, a front guide wheel assembly 400, a wire lubrication system 500, a wire furnace 600, a mold furnace 700, a rear guide wheel assembly 800, a wire forming mechanism 201, a wire drawing mechanism 900, a tension and speed measuring mechanism 300', a wire take-up mechanism, and a control system. The wire payout mechanism 100, the front guide wheel assembly 400, the wire lubrication system 500, the wire furnace 600, the mold furnace 700, the rear guide wheel assembly 800, the wire drawing mechanism 900, the tension and speed measuring mechanism 300', and the wire take-up mechanism 300 are arranged sequentially from left to right (also referred to as being arranged sequentially along the wire drawing direction), with the wire forming mechanism 201 located in front of the rear guide wheel assembly 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 and 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-making switch 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.

[0051] The specific description is as follows:

[0052] 1. About the pay-off mechanism 100

[0053] 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.

[0054] The pay-off wheel 102 has a winding area 107 extending forward and backward around the winding shaft; the pay-off wheel 102 is connected with a pay-off servo motor 108, the pay-off servo motor 108 drives the pay-off wheel 102 to rotate to realize active pay-off, and a motor cover 127 is arranged outside the pay-off servo motor 108.

[0055] The swing pulley 103, the pulley herein generally refers to a wheel with a groove (for example, a V-shaped groove) on the periphery for wire passing and capable of rotating around the shaft, and the rotating shaft extends forward and backward; the swing pulley 103 is connected with 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 rotating center of the swing pulley 103, of course, if it is connected to the area outside the rotating center of the swing pulley 103, the other end of the first swing arm 109 is provided with a swing center 110, the swing pulley 103 rotates and swings horizontally around the up-down axis where the swing center 110 is located together with the first swing arm 109; the other end of the first swing arm 109 is arranged on the pay-off rack 101, and the swing pulley 103 rotates and swings horizontally around the up-down axis L1 where the swing center 110 is located together with the first swing arm 109 relative to the pay-off rack 101; wherein the first swing arm 109 is provided with a first swing angle limiting part, the pay-off rack 101 is provided with a second swing angle limiting part, when the first swing arm 109 rotates to a certain angle, the first swing angle limiting part and the second swing angle limiting part limit each other to limit the swing angle range of the first swing arm 109 relative to the pay-off rack 101, and the swing angle of the swing pulley 103 forward and backward is less than 45 degrees.

[0056] 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 jitter of the wire. The buffer pulley 104 is arranged below the swing pulley 103 and is offset left and right with the swing pulley 103 (for example, the swing pulley 103 is located in the upper left, and the buffer pulley 104 is located in the lower right). In addition, 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 radially aligned with the pulley, preventing the generation of axial force components that cause friction between the wires and damage the wire. 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 magnitude of the tension acting on the buffer pulley 104 remain consistent, effectively solving the problem in traditional technology that "the tension will change sharply as the angle between the rotating arm and the horizontal direction changes, and the floating tension wheel also causes the tension to change, thereby causing periodic quality defects of the wire."

[0057] 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 feeds back to the control system. The control system controls the pay-off speed of the pay-off servo motor 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. 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 can be configured). Figures 2 to 4 The floating spring 113 or cylinder 114 on the upper portion can provide tension according to customer needs using a constant-force tension spring, constant-force compression spring, cylinder (thrust or tension), or ordinary tension spring or ordinary compression spring. Typically, constant-force tension springs and constant-force compression springs are suitable for a single customer product with a clear wire drawing tension, where the product has high tension requirements. The buffer pulley 104 ensures constant tension during floating, while the cylinder (thrust or tension) can be used for a variety of customer tension requirements and products with high tension requirements. The air pressure can be adjusted and maintained constant according to different tension requirements. The cylinder is typically connected to a control system, where settings can be adjusted. Ordinary tension springs and ordinary compression springs are primarily suitable for products with less stringent tension requirements. Tension adjustment can be achieved by matching the analog value of the floating detection sensor 112 with the pay-off speed.

[0058] The wire feeding frame 101 is provided with vertical guide rails 115, the floating base 111 is provided with sliding blocks 116 which are adapted to the vertical guide rails 115 and can slide linearly up and down along the vertical guide rails 115. Specifically, the wire feeding frame 101 comprises 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 wire feeding mechanism 100 can be installed on the automatic wire drawing equipment through the bottom plate 117, the first vertical plate 118 is used for installing the wire feeding servo motor 108 and the wire feeding wheel 102, the second vertical plate 119 is used for installing the buffer pulley 104, the guide pulley 106 and the wire feeding speed measuring pulley 105, the vertical guide rails 115 are 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 air cylinder 114 can be arranged on the rear side of the second vertical plate 119. Correspondingly, the second vertical plate 119 is provided with an avoiding groove 120 which is located beside (for example, the right side) the vertical guide rails 115 and through which the connecting components or parts of the floating base 111 and the air cylinder 114 pass. The swinging pulley 103 is positioned and installed by assembling an L-shaped support 121 on the second vertical plate 119, the L-shaped support 121 comprises a vertical arm 122 and a horizontal arm 123 which is connected to the top end 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, and the horizontal arm 123 provides a rotating connection position for the other end of the first swing arm 109, so that the first swing arm 109 swings relative to the horizontal arm 123. In this embodiment, the other end of the first swing arm 109 is provided with an upwardly extending folded edge 124, the left and right ends of the folded edge 124 serve as two first swing angle limiting parts, when the swinging pulley 103 extends horizontally in the top view (at this time, the angle is 0 degrees), the folded edge 124 keeps a gap 125 with the side of the horizontal arm 123, when the swinging pulley 103 swings forward, it is inclined forward in the top view (at this time, the angle is θ1, θ1 is less than 45 degrees), when the swinging pulley 103 swings forward to the maximum angle, the right end (also referred to as the right first swing angle limiting part) of the folded edge 124 abuts against the side of the horizontal arm 123, and when the swinging pulley 103 swings backward, it is inclined backward in the top view (at this time, the angle is θ2, θ2 is less than 45 degrees), when the swinging pulley 103 swings backward to the maximum angle, the left end (also referred to as the left first swing angle limiting part) of the folded edge 124 abuts against the side of the horizontal arm 123.It can be understood that two left and right spaced positions are arranged on the side of the horizontal arm 123 as two second swing angle limiting parts for limiting the first swing angle limiting parts, thereby limiting the swing angle range of the swing pulley 103. In addition, the L-shaped support 121 and the second vertical plate 119 are respectively manufactured and installed, and the position of the swing pulley 103 is adjusted by changing the design of the L-shaped support 121 (changing the structure of the L-shaped support 121 or the mounting position of the L-shaped support 121 on the second vertical plate 119).

[0059] The pay-off speed measuring pulley 105 is arranged with a first speed sensor 126 to detect the pay-off speed in real time. When applied to the automatic wire drawing equipment, the remaining length of the wire raw material can be calculated in real time by the pay-off speed and the pay-off time, and the remaining time of the drawing work can be calculated, and a take-up speed measuring pulley (the post-drawing speed measuring pulley 302 described below) can be arranged in the take-up process of the automatic wire drawing equipment. Thus, according to the front and rear speed (i.e. the pay-off speed and the speed of the wire after drawing), the control system can determine the running state of the equipment, such as whether the wire is broken, and alarm and / or display the current running state of the equipment on the display screen.

[0060] In the 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 passes through the buffer pulley 104 and then passes through the pay-off speed measuring pulley 105.

[0061] The guide pulley 106 is arranged with 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, on the upper right side of the buffer pulley 104 and on the upper left side of the pay-off speed measuring pulley 105. The wire passes through the swing pulley 103, the buffer pulley 104, the guide pulley 106 and the pay-off speed measuring pulley 105 in sequence after being paid out from the pay-off pulley 102. The right vertical tangent on the wire winding circumference of the buffer pulley 104 and the left vertical tangent on the wire winding circumference of the guide pulley 106 coincide with each other. The left and right horizontal distance between the rotating shaft of the guide pulley 106 and the rotating shaft of the pay-off speed measuring pulley 105 is less than the sum of the wire 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 direction, and the wire stretches obliquely downward from the right side of the guide pulley 106 and winds around the left side of the pay-off speed measuring pulley 105.

[0062] As Figure 7As shown, the wire on the pay-off wheel 102 extends obliquely from the left to the upper right, then vertically downward from the right side of the swing pulley 103, then vertically upward from the right side of the buffer pulley 104, then obliquely from the right side of the pay-off speed measuring pulley 105 to the lower left, and then upward from the right side of the guide pulley 106. During the pay-off process, no matter how the swing pulley 103 swings and whether the buffer pulley 104 floats vertically up and down in a straight line or changes the floating position, the wire always remains vertically downward from the right side of the swing pulley 103 to the left side of the buffer pulley 104, the tension of the wire does not change, the direction and size of the tension acting on the buffer pulley 104 remain consistent, wire breakage is less likely to occur, and the process stability during the wire drawing process is beneficial, and the wire drawing quality can be better guaranteed.

[0063] As can be seen, the pay-off mechanism 100, through the arrangement of the pay-off wheel 102, the swing pulley 103 and the buffer pulley 104, actively pays off wire by the pay-off servo motor, the buffer pulley 104 can float vertically up and down in a straight line, the left vertical tangent on the wire winding circumference of the buffer pulley 104, the right vertical tangent on the wire winding circumference of the swing pulley 103, and the up-down axis where the swing center 110 is located, all coincide with each other, the tension of the wire on the buffer pulley 104 does not change due to the change of the angle of the swing pulley 103, 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 changes sharply due to the different angles of the rotating arm and the horizontal direction, and the floating of the floating tension pulley also causes the change of the tension, thereby causing the quality defects of the wire in stages". In addition, by arranging the first swing angle limiting part on the first swing arm 109 and the second swing angle limiting part on the pay-off rack 101, when the first swing arm 109 rotates to a certain angle, the first swing angle limiting part and the second swing angle limiting part limit each other to limit the swing angle range of the first swing arm 109 relative to the pay-off rack 101, so that the tension of the wire is radial to the pulley, preventing the phenomenon of axial component force causing the wire to rub against each other and damage the wire.

[0064] II. About the front guide wheel set 400 and the rear guide wheel set 800

[0065] As Figure 3As shown, the front guide wheel set 400 and the rear guide wheel set 800 are mainly positioned for the wire passing path. The front guide wheel set 400 is positioned at the left side of the wire lubricating system 500, and the rear guide wheel set 800 is positioned at the right side of the die furnace 700, so that the wire keeps straight in the wire furnace 600 and during the drawing process, preventing the wire from generating torsional stress.

[0066] A plurality of wire grooves (for example, 12 grooves) are arranged in parallel along the front and rear spacing on the front guide wheel set 400 and the rear guide wheel set 800. These wire grooves are arranged left and right, and generally, the wire grooves on the front guide wheel set 400 and the rear guide wheel set 800 are arranged one by one to be on the same straight line. When the wire passes through a certain wire groove on the front guide wheel set 400 to the right, it passes through the wire lubricating system 500, the wire furnace 600, the die furnace 700, and then passes through the corresponding wire groove on the rear guide wheel set 800, and then passes from above the wire drawing mechanism 900 (specifically, the top of the drawing wheel), and then passes from below the wire drawing mechanism 900 (specifically, the bottom of the drawing wheel) to the left and then returns to the front guide wheel set 400. The wire is in a suspended and straightened state between the bottom of the drawing wheel and the bottom of the front guide wheel set 400. The wire passes through the adjacent wire groove on the bottom of the front guide wheel set 400 (the adjacent wire groove refers to another wire groove adjacent to the aforementioned certain wire groove), extends along the left side and top of the front guide wheel set 400 to the right, and then passes through the wire lubricating system 500, the wire furnace 600, the die furnace 700, and then passes through the corresponding adjacent wire groove on the rear guide wheel set 800, and then passes from below the wire drawing mechanism 900 (specifically, the bottom of the drawing wheel) to the left and then returns to the front guide wheel set 400. This cycle continues until the last group of wire grooves of the front guide wheel set 400 and the rear guide wheel set 800 are passed. Figure 2 and Figure 3 As shown, it shows that the wire is circulated from a group of wire grooves at the rear end of the front guide wheel set 400 and the rear guide wheel set 800 to a group of wire grooves at the front end of the front guide wheel set 400 and the rear guide wheel set 800. In addition, the front guide wheel set 400 and the rear guide wheel set 800 also play a role in guiding the turning of the wire and reducing the relative friction between the wire and the wheel.

[0067] III. About the wire drawing mechanism 201

[0068] The wire drawing mechanism 201 is an electrolytic device, which comprises a transformer, an electrode, a container and an electrolyte. The electrolyte can be salt water or other electrolyte commonly used by those skilled in the art. A piece of wire is immersed in the electrolyte for electrolysis. The current flows from the electrode to the wire, and the wire loses electrons in the solution to undergo oxidation reaction, and the surface layer is thinned to pass through the hole of the drawing die.

[0069] Four, about the wire lubrication system 500

[0070] As shown in Figure 8 , the wire lubrication system 500 comprises 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, the upper cover 502 is arranged on the bottom box 501 in an openable and closable manner, and a plurality of lubrication grooves 504 (for example, 12 grooves) are arranged along the front and rear spacing on the wire lubricator 503. The lubrication grooves 504 are arranged left and right, and a plurality of small holes 505 are arranged at the bottom of the lubrication grooves 504. These small holes 505 pass through the communication cavity inside the wire lubricator 503 downward.

[0071] In use, the lubricant (for example, graphite milk) in the lubricant storage container is continuously pumped into the communication cavity of the wire lubricator by the water pump. The lubricant emerges from the small holes at the bottom of the lubrication grooves and accumulates in the lubrication grooves. The wire passes through the lubrication grooves and combines with the lubricant, so that the surface of the wire is wrapped with a layer of lubricant. In the subsequent heating process of the wire furnace 600, the surface of the wire will not be oxidized due to exposure to air, and the lubricant protects the surface of the wire when it passes through the drawing die, reducing the friction between the wire and the drawing die, thereby improving the smoothness of the wire after drawing and reducing the wear of the drawing die. The water pump works continuously, and the lubricant in the lubrication grooves overflows into the bottom box and flows back to the lubricant storage container from the liquid outlet return of the bottom box.

[0072] Five, about the wire furnace 600

[0073] As shown in Figure 9 and Figure 10As shown, the wire stove 600 comprises a stove body 601 and a stove cover 602. The stove cover is opened in a flat pushing way, which is more convenient and labor-saving than the flip opening, and the structure is more simple and the cost is lower. Specifically, the rear end of the stove body is provided with a front-rear extending guide shaft 603, the stove cover is connected with a linear bearing 604, the linear bearing is adapted to the guide shaft, the top of the stove cover is provided with a push hand 605, in this way, the stove cover can be pushed forward and backward, and the stove body is exposed when pushed backward, and covered when pushed forward. The left and right ends of the stove body are provided with left-right corresponding through wire separation grooves 606, the stove body is provided with a heating device 607 (defined as a first heating device) and a heat preservation material piece 608, the top of the heat preservation material piece is concave downward with a plurality of grooves 609, the heating device is sunk into the grooves of the heat preservation material piece, the top of the heating device (a plurality of heating wires or heating strips) is lower than the top of the heat preservation material, the bottom surface of the wire separation groove is flush or slightly higher than the top of the heat preservation material piece, maintaining a safe distance, in this way, the heating device can be isolated, and in the case of sudden situation (such as broken wire), the wire material can be prevented from short-circuiting with the heating device to cause danger, and the heat is uniform and the heat preservation effect is better. Usually, the bottom of the stove cover is provided with a top heat preservation layer, in this way, the heating device is provided with a heat preservation layer in all directions.

[0074] Six, about the mold stove 700

[0075] As Figures 11 to 13As shown, the die furnace 700 is a wire drawing die, which includes a die frame 701, a heating tube 702 (or other heating elements such as heating wires, defined as a second heating device), a temperature sensor 703, a temperature controller, a heat preservation plate 704, a die furnace cover 705, and a powder box 706. A plurality of wire drawing die blocks 707 are arranged on the die frame, and a left-right extending die hole is arranged in each wire drawing die block. The powder box is located below the plurality of wire drawing die blocks, and the die hole below is hollowed out to facilitate the lubricant residue generated during the wire drawing process to fall into the powder box. A mounting hole is reserved on the die frame, and each wire drawing die block is embedded in each mounting hole. By replacing different wire drawing die blocks (with different die hole diameters), the die furnace 700 with different requirements can be obtained. In this embodiment, there are 12 wire drawing die blocks, and the sizes of the 12 die holes are gradually reduced from back to front. The 12 wire drawing die blocks are arranged in two rows (or more rows) from left to right. From the left or right angle, the plurality of wire drawing die blocks are overlapped and staggered from front to back, which can make the die arrangement more compact and reduce the space arrangement of the equipment. The heating tube and the temperature sensor are directly embedded in the die frame, which has a simple and reasonable structure, fast heating, high efficiency, and automatic temperature control by using the temperature sensor. The die frame is surrounded by a heat preservation plate, and the die furnace cover is arranged on the upper side of the die frame and can be opened and closed by flipping up and down. A heat preservation plate is also arranged at the bottom of the die furnace cover. The use of a multi-section temperature zone heating tube makes the temperature difference between the 12 die holes on the die frame less than ±5℃. After the wire is heated and softened by the wire furnace 600, it passes through the die hole of the wire drawing die, and the wire is gradually thinned by the extrusion deformation of the die. The wire and the center of the die hole are coincident, which prevents the die from being subjected to radial force, thereby making the die more durable. Since the wire can maintain a straight line state during the wire furnace 600 and the drawing process, the wire is prevented from generating torsional stress, the product wire quality is stable, the wire is not shrunk, and the quality is improved.

[0076] Seven, about the wire drawing mechanism 900

[0077] As shown in Figure 14 and Figure 15 , the wire drawing mechanism 900 includes a wire drawing motor 901, a wire drawing speed reducer 902, a base 903, a wire drawing wheel 904, and a rolling bearing 905. The base serves as a support and is used for installation and fixation. The rolling bearing is embedded in the base, and the wire drawing wheel is fixed by the rolling bearing. The tail end of the wire drawing wheel is connected with the wire drawing speed reducer. The wire drawing motor provides power to drive the wire drawing wheel to rotate through the speed reducer. The structure is simple, and the head of the wire drawing wheel is designed as a cantilever structure to facilitate wire winding. The wire drawing wheel is a straight cylindrical wheel. The wire is wound on 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, so that the wire passes through the wire drawing die at a continuous and uniform speed, and stable quality wire is obtained.

[0078] Eight, about the tension speed measuring mechanism 300' and the take-up mechanism 300

[0079] As shown in Figures 16 to 18 , the take-up mechanism 300 is based on the tension speed measuring mechanism 300' to control the take-up rotating speed, that is, the take-up mechanism 300 is dynamically controlled based on the tension maintaining and wire drawing speed measuring function 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, etc., and the take-up mechanism 300 includes a take-up pulley 304, etc.

[0080] The first guide pulley 301 is provided with a front and rear extending rotating shaft; the first guide pulley 301 is connected with a transversely extending second swing arm 305 (defined as the second swing arm), 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 with a torsion control servo motor 306, and the rotating shaft 312 (provided with a front and rear extension) of the torsion 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 around the front and rear axis L where the other end of the second swing arm 305 is located along with the second swing arm 305; the encoder of the torsion 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.

[0081] The post-drawing speed measuring pulley 302 is located below the first guide pulley 301, and the wire is wound around the post-drawing speed measuring pulley 302 and then wound around the first guide pulley 301. The post-drawing speed measuring pulley 302 is arranged with a second speed sensor 307 to detect the drawing speed, and in actual use, the drawing speed can also be compared with the unwinding speed to calculate the wire diameter after drawing by the control system. The calculated 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 within the standard range). Specifically, according to the principle of equal volume of wire πR1².L1=πR2².L2, it is derived that πR1².V1t=πR2².V2t, wherein R1 is the wire radius at the unwinding end (i.e., the original wire radius), L1 is the unwinding length, L2 is the winding length, V1 is the speed of the unwinding speed measuring pulley 105, R2 is the wire radius at the winding end (i.e., the wire radius after drawing), V2 is the speed of the post-drawing speed measuring pulley 302, R2²=πR1².V1t / (π.V2t), and thus 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, and if it is not, an alarm can be given and / or the real-time wire radius R2 can be displayed on the display screen for the operator to check and adjust the equipment as needed. In other embodiments, when the real-time wire radius R2 is not up to standard or is developing a trend towards not meeting the standard, the control system can automatically adjust the temperature of the different dies and the temperature of the wire by changing the expansion of the die holes and the contraction of the wire after passing through the holes, so as to obtain different wire diameters. This adjustment method has a small change in wire diameter, which 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 condition of the last die (e.g., the die hole of the frontmost drawing die block 707 in the embodiment) also affects the wire radius R2, and thus the control system can also automatically analyze the wear condition of the last die from the wire radius R2. The analysis results can be displayed in real time on the display screen or can be freely called up by the operator for review, so as to quickly understand the equipment condition. If the foregoing speed regulation scheme cannot solve the problem in time, the operator is reminded to check and verify the die wear condition and replace or repair the drawing die block 707.

[0082] The second guide pulley 303 is arranged with a second guide pulley 303 extending forward and backward along the axis of rotation, and the second guide pulley 303 is arranged above the first guide pulley 301 on the right side. The second guide pulley 303 is located above the winding wheel 304 on the left side.

[0083] The take-up wheel 304 (also called a take-up reel) has a winding area extending forward and backward around the winding shaft; the take-up wheel 304 is connected with a take-up servo motor 308, and the take-up servo motor 308 drives the take-up wheel 304 to rotate; the take-up servo motor 308 is usually connected with a speed reducer 309, and the speed reducer 309 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 with a front and back translation driving unit, and the front and back translation driving unit 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 on the winding area. Usually, the front and back translation driving unit is a wire arrangement module 311 driven by a wire arrangement motor 310, which is called a linear module, a linear module, a Cartesian robot, a linear slide, etc.

[0084] The torque control servo motor 306, the second speed sensor 307, and the take-up servo motor 308 are connected to a control system, respectively. The control system controls the torque control servo motor 306 to provide a 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 take-up servo motor 308 in real time according to the trend of the swing floating of the second swing arm 305 and the wire drawing speed, so that the take-up speed and the drawing speed remain consistent. By the torque control servo motor 306, the tension and the feedback floating trend are provided. Compared with the traditional technology of the rotary point positioner (angle sensor) plus the counterweight mechanism, the torque control servo motor 306 can provide a constant tension, has a short reaction time, overcomes the shortcomings of the large inertia of the counterweight mechanism, such as insufficient rapid adjustment and long reaction time, and can be better applied to drawing finer wires. For example, the angle range of the second swing arm 305 is 30° to 180°, and the second swing arm 305 is arranged at a 90° position (as shown in Figure 4 When the angle position of the second swing arm 305 is greater than 90°, the control system controls the take-up servo motor 308 to slow down until the angle of the second swing arm 305 approaches the 90° position (a deviation value Δθ is set, and here approaching 90° means 90°+Δθ); when the position of the second swing arm 305 decreases (i.e., less than 90°), the control system controls the take-up servo motor 308 to speed up until the angle of the second swing arm 305 approaches the 90° position (a deviation value Δθ is set, and here approaching 90° means 90°-Δθ).

[0085] Based on the position arrangement of the post-drawing speed measuring pulley 302, the first guide pulley 301, the second guide pulley 303 and the take-up wheel 304, the take-up action of the wire is smooth and stable. Specifically, as shown in Figure 18 after the drawing, the wire is wound out from the top right side of the drawing mechanism 900, is wound into the top left side of the post-drawing speed measuring pulley 302, is wound out from the bottom of the post-drawing speed measuring pulley 302 along the right side of the post-drawing speed measuring pulley 302, is wound out from the top of the drawing mechanism 900 along the left side and the top of the drawing mechanism 900, is wound out from the top right side, and then is wound into the bottom left side of the first guide pulley 301 and is wound out from the bottom of the first guide pulley 301 along the right side, is wound into the top left side of the second guide pulley 303 and is wound out from the top of the second guide pulley 303 along the right side, and is wound into the top left side of the take-up wheel 304 and is wound along the right side of the take-up wheel 304 to the bottom.

[0086] Thus, the tension speed measuring mechanism 300' and the take-up mechanism 300 are connected with the torsion control servo motor 306 at the other end of the second swing arm 305, the rotation shaft of the torsion control servo motor 306 is connected to the other end of the second swing arm 305, the first guide pulley 301 rotates along with the second swing arm 305 around the front and back axis at the other end of the second swing arm 305, the encoder of the torsion control servo motor 306 obtains the position of the rotation shaft in real time to understand the current angle of the second swing arm 305, the corresponding torsion is provided according to the current angle of the second swing arm 305 to control the torsion control servo motor 306, so that the wire maintains constant tension, the reaction time of the torsion control servo motor 306 is short, the torsion can be quickly adjusted to maintain constant tension of the wire. In addition, the rotation speed of the take-up servo motor 308 can be controlled in real time according to the swing floating trend of the second swing arm 305 and the drawing speed, so that the take-up speed is consistent with the drawing speed, which overcomes the shortcomings of the large inertia of the counterweight mechanism, such as slow adjustment and long reaction time, and is better applicable to drawing finer wires, which is beneficial to the stability of the drawing quality.

[0087] The automatic drawing equipment of the embodiment combines Figures 1-3 , Figure 7 and Figure 18 as shown:

[0088] The wire on the wire releasing wheel 102 extends from the left side to the right upper side, extends vertically downward from the right side of the swing pulley 103, extends vertically upward from the right side of the buffer pulley 104, extends from the left side to the right lower side of the wire releasing and speed measuring pulley 105, extends upward from the right side of the guide pulley 106, and then the wire passes through the rear end of the first guide slot on the front guide wheel set 400, and then sequentially passes through the wire lubricating groove of the wire lubricating system 500, the wire groove of the wire furnace 600, the die hole of the die furnace 700, and then passes through the corresponding rear end of the first guide slot on the rear guide wheel set 800, and then passes over the top of the wire drawing wheel of the wire drawing mechanism 900 from above to the right, and then sequentially passes back to the front guide wheel set 400 from the bottom of the wire drawing wheel of the wire drawing mechanism 900 to the left, and then the wire passes through the adjacent guide slots at the bottom of the front guide wheel set 400, and then sequentially passes through the adjacent wire lubricating grooves of the wire lubricating system 500, and so on, until the wire passes through the last group of guide slots of the front guide wheel set 400 and the rear guide wheel set 800, and then passes over the top of the wire drawing wheel of the wire drawing mechanism 900 from above to the right, and then passes through the wire drawing speed measuring pulley 302 and the wire drawing wheel of the wire drawing mechanism 900 from the left side to the top, and then passes through the first guide pulley 301, the second guide pulley 303 and the wire winding wheel 304.

[0089] In addition, it should be noted that when the wire needs to pass through a plurality of (for example, 12) die holes of the die furnace 700, the end of the wire is first placed in the wire melting mechanism 201 for electrolysis until the end of the wire is electrolyzed to be able to pass through the first die hole with the largest aperture, and then the wire passes through the first die hole, and then the wire passes through the front guide wheel set 400, the wire lubricating system 500, the wire furnace 600, the die furnace 700, the rear guide wheel set 800, the wire drawing wheel, the front guide wheel set 400, the wire lubricating system 500 and the wire furnace 600, and then the end of the wire is placed in the wire melting mechanism 201 for electrolysis again until the end of the wire is electrolyzed to be able to pass through the second die hole with the second largest aperture, and so on, until the end of the wire passes through the twelfth die hole with the smallest aperture, and then the end of the wire passes through the wire drawing mechanism 900 and the tension speed measuring mechanism 300', and is wound on the wire winding mechanism 300, and then the automatic wire drawing equipment is started to perform automatic wire drawing.

[0090] In the utility model, the wire releasing end, the wire drawing process and the wire winding end are optimized.

[0091] 1. At the wire feeding end, the wire tension (size and direction) is kept consistent, and the wire feeding speed is detected in real time, and the floating condition of the buffer pulley 104 (including position, acceleration, speed, etc.) is detected and fed back to the control system, and the control system controls the wire feeding speed of the wire feeding servo motor 108 according to the parameters fed back by the floating detection sensor 112, so that the wire feeding speed and the drawing speed are iteratively balanced;

[0092] 2. The front guide wheel set 400 and the rear guide wheel set 800 are used to position the wire passing path, so that the wire maintains a straight line state in the wire furnace 600 and during drawing, and prevents the wire from generating torsional stress;

[0093] 3. At the wire collecting end, the torsion control servo motor 306 provides corresponding torsion according to the current angle of the second swing arm 305, which can quickly adjust the torsion to keep the wire tension constant, and can control the rotating speed of the wire collecting servo motor 308 according to the trend of the swing floating of the second swing arm 305 and the wire drawing speed, so that the wire collecting speed and the drawing speed are kept consistent;

[0094] The application of the automatic wire drawing equipment greatly improves the wire drawing quality and efficiency, and is not prone to wire breakage. The automatic wire drawing equipment runs stably, and the failure rate during the wire drawing process is extremely low, which meets the needs of drawing finer wire.

[0095] The above is only a preferred embodiment of the present application, and does not limit the technical scope of the present application. Any slight modification, equivalent change and modification made according to the technical essence of the present application still falls within the scope of the technical solution of the present application.

Claims

1. An automatic wire drawing apparatus characterized by comprising: The device comprises a machine frame, a wire feeding mechanism, a front guide wheel set, a wire lubricating system, a wire furnace, a die furnace, a rear guide wheel set, a wire drawing mechanism, a tension speed measuring mechanism and a wire winding mechanism arranged on the machine frame in sequence from left to right. The wire feeding mechanism comprises a wire feeding frame, a wire feeding wheel, a swing pulley, a buffer pulley, a wire feeding speed measuring pulley and a guide pulley arranged on the wire feeding frame. The front guide wheel set and the rear guide wheel set are provided with a plurality of wire guide grooves arranged in parallel along the front-rear distance. The wire lubricating system is provided with a plurality of wire lubricating grooves arranged along the front-rear distance. The wire furnace is provided with left-right corresponding through wire separation grooves at the left and right ends. The die furnace is provided with a second heating device and a plurality of die holes arranged along the front-rear distance. The wire drawing mechanism comprises a wire drawing motor and a wire drawing wheel driven by the wire drawing motor. The tension speed measuring mechanism comprises a first guide pulley, a wire drawing rear speed measuring pulley and a second guide pulley. The wire winding mechanism comprises a wire winding wheel connected with a wire winding servo motor.

2. An automatic wire drawing apparatus according to claim 1, characterized in that: The swing pulley is provided with a rotating shaft extending in the front-rear direction. The swing pulley is connected with a first swing arm, one end of the first swing arm is connected to the swing pulley, the other end of the first swing arm is provided with a swing center, the swing pulley rotates horizontally around the upper and lower axis where the swing center is located with the swing arm. The buffer pulley is provided with a rotating shaft extending in the front-rear direction. The buffer pulley can float linearly up and down. The buffer pulley is arranged below the swing pulley and forms a left-right misalignment with the swing pulley. The left vertical tangent on the wire winding circumference of the buffer pulley, the right vertical tangent on the wire winding circumference of the swing pulley and the upper and lower axis where the swing center is located are coincident. The wire feeding speed measuring pulley is provided with a first speed measuring sensor.

3. An automatic wire drawing apparatus according to claim 2, wherein: The other end of the first swing arm is arranged on the pay-off rack, the swing pulley swings horizontally around the up-down axis where the swing center is located along with the first swing arm relative to the pay-off rack; the first swing angle limiting part is arranged on the first swing arm, the second swing angle limiting part is arranged on the pay-off rack, the first swing angle limiting part and the second swing angle limiting part limit each other to limit the swing angle range of the first swing arm relative to the pay-off rack, and the swing angle of the swing pulley forward and backward is less than 45 degrees.

4. The automatic wire drawing apparatus according to claim 1, wherein: The wire lubrication system comprises a bottom box, an upper cover, a wire lubricator, a water pump and a lubricant storage container, the wire lubricator is arranged in the bottom box, the upper cover is arranged on the bottom box in an openable and closable manner, the wire lubrication groove is arranged on the wire lubricator, the inside of the wire lubricator is provided with a communication cavity, and the bottom of the wire lubrication groove is provided with a small hole penetrating downwardly through the communication cavity; the water pump continuously draws the lubricant in the lubricant storage container into the communication cavity, the lubricant emerges from the small hole and gathers in the wire lubrication groove, and the lubricant in the wire lubrication groove overflows into the bottom box and returns to the lubricant storage container from the liquid outlet return of the bottom box.

5. The automatic wire drawing apparatus according to claim 1, wherein: The wire furnace comprises a furnace body and a furnace cover, the rear end of the furnace body is provided with a front-rear extending guide shaft, the furnace cover is connected with a linear bearing, and the linear bearing is matched on the guide shaft, so that the furnace cover is pushed forward and backward to open and close the furnace cover.

6. The automatic wire drawing apparatus according to claim 1 or 5, wherein: The wire furnace is provided with a heat preservation material piece, the top of the heat preservation material piece is concave downwardly with a plurality of grooves, the first heater is sunk in the groove of the heat preservation material piece, and the top of the first heater is lower than the top of the heat preservation material.

7. The automatic wire drawing apparatus according to claim 1, wherein: The die furnace comprises a die frame, a plurality of wire drawing die blocks are arranged on the die frame, and die holes are arranged in the wire drawing die blocks; the plurality of wire drawing die blocks are arranged in a plurality of rows left and right, so that the plurality of wire drawing die blocks are overlapped and staggered in front and back in the left view or right view angle.

8. The automatic wire drawing apparatus according to claim 1, wherein: The wire drawing mechanism further comprises a wire drawing speed reducer, a base and a rolling bearing; the rolling bearing is embedded in the inside of the base, the wire drawing wheel is fixed by the rolling bearing, the tail end of the wire drawing wheel is connected with the wire drawing speed reducer, the wire drawing motor provides power to drive the wire drawing wheel to rotate through the speed reducer, and the head of the wire drawing wheel is in a cantilever structure for winding wire.

9. The automatic wire drawing apparatus according to claim 1, wherein: The rotation axis of the first guide pulley extends forward and backward, the first guide pulley is connected with 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 with a torsion control servo motor, and the rotation axis of the torsion control servo motor is connected to the other end of the second swing arm, the first guide pulley rotates up and down around the forward and backward axis where the other end of the second swing arm is located along with the second swing arm; the encoder of the torsion control servo motor obtains the position of the rotation axis in real time to understand the current angle of the second swing arm, the control system controls the torsion control servo motor to provide corresponding torsion according to the current angle of the second swing arm; the rotation axis of the drawing rear speed measuring pulley extends forward and backward, and the drawing rear speed measuring pulley is provided with a second speed measuring sensor.

10. An automatic wire drawing apparatus according to claim 9, wherein: The control system controls the rotation speed of the take-up servo motor in real time according to the angle change trend of the second swing arm fed back by the encoder and the wire drawing speed fed back by the second speed measuring sensor.

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