Tungsten wire drawing process

Abstract

The invention discloses a tungsten filament wire drawing process, and relates to the technical field of metal wire manufacturing. A plurality of lubricating and heating wire drawing mechanisms in a tungsten filament wire drawing machine adopted in the process are sequentially arranged between a first transition wheel set and a second transition wheel set; the positions of the first transition wheel, the wire drawing die of each die device, the second transition wheel and the third annular groove correspond to each other and form a wire drawing channel, the number of the wire drawing channels is N, and a tungsten filament is led out by the pay-off mechanism, sequentially penetrates through the first wire drawing channel to the Nth wire drawing channel and is wound on the take-up mechanism. And then wire drawing can be carried out. A plurality of lubricating, heating and wire-drawing mechanisms are arranged in one device, so that tungsten wires can be processed into finished wires through one wire-drawing process of one device, the occupied space of the required device is small, and the working efficiency is improved. Meanwhile, the energy of the upstream heating device can be fully utilized, the power consumption of the downstream heating device is reduced, and the production cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of metal wire manufacturing, in particular to a tungsten wire drawing process. Background Art

[0002] The existing photovoltaic cutting tungsten wire rough drawing and fine drawing usually proceeds by first completing the first drawing process of the tungsten wire from 0.39mm-0.18mm (mainstream 8 drawing dies) through a set of lubrication devices, heating devices and mold devices, and then completing the second drawing process of the tungsten wire from 0.18mm-0.07mm (mainstream 10 drawing dies) through a set of lubrication devices, heating devices and mold devices, and then completing the third drawing process of the tungsten wire from 0.07mm-0.03mm (mainstream 12 drawing dies, the finished wires mainly have specifications of 0.035mm, 0.032mm, 0.030mm, 0.028mm, etc.) through a set of lubrication devices, heating devices and mold devices. That is to say, from 0.39mm to the finished wire, three wire drawing processes need to be completed through three devices respectively, with low work efficiency and large space occupied by the required equipment. In addition, the electric energy consumed by the heating device accounts for a certain proportion of its production cost, while the energy of the heating device is not fully utilized, resulting in great waste. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a tungsten wire drawing process, which makes the required equipment occupy a small space, improves work efficiency, fully utilizes the energy of the heating device, and reduces production costs.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] The present invention provides a tungsten wire drawing process, which adopts a tungsten wire drawing machine, wherein a wire-releasing mechanism and a wire-receiving mechanism of the tungsten wire drawing machine are respectively arranged on the left and right sides of the upper part of a frame, a driving wheel mechanism is arranged on the frame and located between the wire-releasing mechanism and the wire-receiving mechanism, and a power mechanism is used to provide power to the driving wheel mechanism; a first transition wheel group is arranged between the wire-releasing mechanism and the driving wheel mechanism and is located on a side close to the wire-releasing mechanism, and a second transition wheel group is arranged between the first transition wheel group and the driving wheel mechanism and is located on a side close to the driving wheel mechanism; a plurality of lubricating and heating wire drawing mechanisms are arranged in sequence between the first transition wheel group and the second transition wheel group, and the lubricating and heating wire drawing mechanisms include a lubricating device, a heating device and a mold device arranged in sequence from left to right, and the wire-releasing mechanism, the wire-receiving mechanism, the power mechanism and the heating device are all connected to a controller;

[0006] The die device comprises a die seat and a plurality of wire drawing dies arranged on the die seat from back to front in sequence, the apertures of the plurality of wire drawing dies on the die seat decrease in sequence from back to front, the first transition wheel group comprises a plurality of first transition wheels arranged in sequence from back to front, the second transition wheel group comprises a plurality of second transition wheels arranged in sequence from back to front, a plurality of third annular grooves for accommodating tungsten wires are arranged in sequence along the axial direction on the driving wheel mechanism, one of the first transition wheels, one of the wire drawing dies of each of the die devices, one of the second transition wheels and one of the third annular grooves are positioned correspondingly and form a wire drawing channel, the apertures of the plurality of wire drawing dies on each of the wire drawing channels decrease in sequence from left to right, the aperture of the wire drawing die on the leftmost side of the front wire drawing channel of the two adjacent wire drawing channels is smaller than the aperture of the wire drawing die on the rightmost side of the rear wire drawing channel; the number of the wire drawing channels is N, the rearmost wire drawing channel is the first wire drawing channel, and the frontmost wire drawing channel is the Nth wire drawing channel;

[0007] The process includes the following steps:

[0008] Step 1, the tungsten wire is led out from the pay-off mechanism, enters the first wire drawing channel from above the first first transition wheel in the first transition wheel group, passes through the multiple wire drawing dies on the first wire drawing channel and the first second transition wheel in the second transition wheel group in sequence, enters the first third annular groove on the driving wheel mechanism, winds at least one circle around the first third annular groove of the driving wheel mechanism, and continues to move leftward from below the driving wheel mechanism to below the first transition wheel group; enters the second wire drawing channel from above the second first transition wheel in the first transition wheel group, passes through the multiple wire drawing dies on the second wire drawing channel and the second second transition wheel in the second transition wheel group in sequence, enters the second third annular groove on the driving wheel mechanism, winds at least one circle around the second third annular groove of the driving wheel mechanism, and continues to move leftward from below the driving wheel mechanism to below the first transition wheel group, and threading the third wire drawing channel is performed, and so on, until threading the Nth wire drawing channel is performed, and the tungsten wire is wound at least one circle around the Nth third annular groove of the driving wheel mechanism and is wound on the take-up mechanism;

[0009] Step 2: starting the wire-releasing mechanism, the wire-retrieving mechanism and the power mechanism through the controller to draw the tungsten wire;

[0010] Step 3: After the wire drawing work is completed, the wire-releasing mechanism, the wire-reeling mechanism and the power mechanism are turned off by the controller.

[0011] Preferably, in step one, before threading, the front end of the tungsten wire is electrolytically corroded to reduce the diameter of the front end of the tungsten wire.

[0012] Preferably, the driving wheel mechanism includes a plurality of driving wheels arranged in sequence from back to front, each of the driving wheels is provided with at least one third annular groove, and the power mechanism is used to drive all the driving wheels to rotate; a first tension swing rod is provided between the frontmost wire drawing channel corresponding to the rear driving wheel of any two adjacent driving wheels and the rearmost wire drawing channel corresponding to the front driving wheel, the first tension swing rod is provided on the frame, and the first tension swing rod is located between the first transition wheel group and the wire release mechanism, a third transition wheel is provided on the side of each of the first tension swing rods away from the first transition wheel group, the third transition wheel is provided on the frame, each of the first tension swing rods is connected to a first potentiometer for detecting a change in a rotation angle, and each of the first potentiometers is connected to the controller;

[0013] In step one, the tungsten wire extends from the front end of the drawing channel corresponding to the rear driving wheel of any two adjacent driving wheels and moves to the left to the bottom of the first transition wheel group, passes through the first tension swing rod and bypasses the third transition wheel to move to the right, extends to the right from the first transition wheel of the drawing channel at the rear end corresponding to the front driving wheel, and continues to pass through the multiple drawing dies on the drawing channel.

[0014] Preferably, the power mechanism includes a plurality of power components, the power components include a driving motor and a synchronous transmission device, each of the motors drives one of the driving wheels to rotate through one of the synchronous transmission devices, and each of the driving motors is connected to the controller;

[0015] In step 1, the first potentiometer on the first tension swing arm transmits the rotation angle to the controller, and the controller controls the speed matching of the two driving motors corresponding to any two adjacent driving wheels.

[0016] Preferably, the driving motor is arranged on the frame, the driving wheel includes a wheel body and a hollow wheel axle arranged behind the wheel body, the wheel body and the hollow wheel axle of the rear driving wheel of the two adjacent driving wheels are both gap-mounted on the outside of the hollow wheel axle of the front driving wheel, a bearing is arranged between any two adjacent hollow wheel axles, the hollow wheel axle of the front driving wheel of the two adjacent driving wheels passes through the hollow wheel axle of the rear driving wheel and extends to the outside, the hollow wheel axle of each driving wheel is rotatably installed on the frame, and each driving motor is connected to the hollow wheel axle of one of the driving wheels through a synchronous transmission device.

[0017] Preferably, a second tension swing rod is provided on the frame, the second tension swing rod is located between the first transition wheel group and the wire release mechanism, a plurality of the first tension swing rods and the second tension swing rods are arranged in sequence from back to front, a fourth transition wheel is provided on the side of the second tension swing rod away from the first transition wheel group, the fourth transition wheel is provided on the frame, a plurality of the third transition wheels and the fourth transition wheels are arranged in sequence from back to front, a second potentiometer for detecting a change in a rotation angle is connected to the second tension swing rod, and the second potentiometer is connected to a controller;

[0018] In step one, after the tungsten wire is wound around the Nth third annular groove of the driving wheel mechanism for at least one circle, it continues to move to the left from under the driving wheel mechanism, passes through the second tension swing rod and moves to the right around the fourth transition wheel, and is wound around the wire-winding mechanism. The second potentiometer on the second tension swing rod transmits the rotation angle to the controller, and the controller controls the wire-winding mechanism to match the speed of the driving motor corresponding to the frontmost driving wheel.

[0019] Preferably, an eddy current detection probe is provided between the pay-off mechanism and the first transition wheel assembly. In step one, the eddy current detection probe performs defect detection on the tungsten wire paid out by the pay-off mechanism.

[0020] Preferably, a third tension swing rod is provided between the wire-releasing mechanism and the eddy current detection probe, and a fifth transition wheel is provided between the third tension swing rod and the wire-releasing mechanism;

[0021] In step one, the tungsten wire is led out from the wire-releasing mechanism and passes through the fifth transition wheel and the third tension swing rod in sequence, and then enters the first wire drawing channel.

[0022] Preferably, a laser diameter gauge is provided between the driving wheel mechanism and the wire-taking mechanism, and a sixth transition wheel and a seventh transition wheel are provided on both sides of the laser diameter gauge, respectively, and the sixth transition wheel and the seventh transition wheel are provided at the same height;

[0023] In step one, the tungsten wire moves to the right around the fourth transition wheel, passes through the sixth transition wheel and the seventh transition wheel in sequence and is wound around the wire-taking mechanism, and the laser diameter gauge detects the diameter of the tungsten wire after wire drawing.

[0024] Preferably, the pay-off mechanism comprises a pay-off motor and a pay-off wheel, wherein the pay-off motor is arranged on the frame and used to drive the pay-off wheel to rotate; the take-up mechanism comprises a take-up motor and a take-up wheel, wherein the take-up motor is arranged on the frame and used to drive the take-up wheel to rotate, and both the pay-off motor and the take-up motor are connected to the controller;

[0025] In step 2, the pay-off motor, the take-up motor and the drive motor are turned on by the controller to draw the tungsten wire;

[0026] In step three, after the wire drawing work is completed, the pay-off motor, the take-up motor and the drive motor are turned off by the controller.

[0027] Compared with the prior art, the present invention has achieved the following technical effects:

[0028] The tungsten wire drawing process of the present invention adopts a tungsten wire drawing machine in which a plurality of lubricating and heating wire drawing mechanisms are sequentially arranged between the first transition wheel group and the second transition wheel group. A first transition wheel, a wire drawing die of each die device, a second transition wheel and a third annular groove are positioned correspondingly to form a wire drawing channel. The number of wire drawing channels is N. After the tungsten wire is led out by the wire-releasing mechanism, it passes through the first wire drawing channel to the Nth wire drawing channel in sequence and is wound on the wire-receiving mechanism, and then the wire drawing can be carried out. By arranging a plurality of lubricating and heating wire drawing mechanisms in one device, the processing of 0.39 mm tungsten wire to finished wire can be completed by one device through one wire drawing process, so that the required equipment occupies a small space and improves work efficiency. At the same time, a plurality of heating devices are integrated into one device. When the tungsten wire enters the downstream heating device after being heated by the upstream heating device, there is no need for an excessively high heating temperature, thereby making full use of the energy of the upstream heating device, reducing the power consumption of the downstream heating device, and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 This is a working schematic diagram of the tungsten wire drawing process provided by the present invention.

[0031] Explanation of the accompanying drawings: 1. pay-off wheel; 2. driving wheel mechanism; 3. first transition wheel; 4. second transition wheel; 5. lubrication device; 6. heating device; 7. mold device; 8. fifth transition wheel. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] The purpose of the present invention is to provide a tungsten wire drawing process, which makes the required equipment occupy a small space, improves the work efficiency, fully utilizes the energy of the heating device, and reduces the production cost.

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] like Figure 1 As shown, the present embodiment provides a tungsten wire drawing process, adopting a tungsten wire drawing machine, wherein the wire-releasing mechanism and the wire-receiving mechanism of the tungsten wire drawing machine are respectively arranged on the left and right sides of the upper part of the frame, the driving wheel mechanism 2 is arranged on the frame and located between the wire-releasing mechanism and the wire-receiving mechanism, the power mechanism is used to provide power to the driving wheel mechanism 2, the power mechanism is arranged on the frame and located behind the driving wheel mechanism 2; the first transition wheel group and the second transition wheel group are both arranged on the frame, the first transition wheel group is arranged between the wire-releasing mechanism and the driving wheel mechanism 2 and located on the side close to the wire-releasing mechanism, the second transition wheel group is arranged between the first transition wheel group and the driving wheel mechanism 2 and located on the side close to the driving wheel mechanism 2; a plurality of lubricating and heating wire drawing mechanisms are all arranged on the frame, the plurality of lubricating and heating wire drawing mechanisms are sequentially arranged between the first transition wheel group and the second transition wheel group, the lubricating and heating wire drawing mechanism comprises a lubricating device 5, a heating device 6 and a mold device 7 sequentially arranged from left to right, the wire-releasing mechanism, the wire-receiving mechanism, the power mechanism and the heating device 6 are all connected to the controller.

[0036] The die device 7 includes a die seat and a plurality of wire drawing dies arranged on the die seat from back to front in sequence, the apertures of the plurality of wire drawing dies on the die seat decrease in sequence from back to front, the first transition wheel group includes a plurality of first transition wheels 3 arranged in sequence from back to front, the central axes of the plurality of first transition wheels 3 are arranged in a collinear manner, and the second transition wheel group includes a plurality of second transition wheels 4 arranged in sequence from back to front, the central axes of the plurality of second transition wheels 4 are arranged in a collinear manner. A plurality of third annular grooves for accommodating tungsten wires are arranged in sequence along the axial direction on the driving wheel mechanism 2, a first transition wheel 3, a wire drawing die of each die device 7, a second transition wheel 4 and a third annular groove are positioned correspondingly and form a wire drawing channel, the apertures of the plurality of wire drawing dies on each wire drawing channel decrease in sequence from left to right, the aperture of the leftmost wire drawing die of the front wire drawing channel of the two adjacent wire drawing channels is smaller than the aperture of the rightmost wire drawing die of the rear wire drawing channel; the number of wire drawing channels is N, the rearmost wire drawing channel is the first wire drawing channel, and the frontmost wire drawing channel is the Nth wire drawing channel.

[0037] The process includes the following steps:

[0038] Step 1, the tungsten wire is led out from the wire-releasing mechanism, enters the first wire-drawing channel from above the first first transition wheel 3 in the first transition wheel group, passes through multiple wire-drawing dies on the first wire-drawing channel and the first second transition wheel 4 in the second transition wheel group in sequence, enters the first third annular groove on the driving wheel mechanism 2, winds at least one circle around the first third annular groove of the driving wheel mechanism 2, and continues to move leftward from below the driving wheel mechanism 2 to below the first transition wheel group; enters the second wire-drawing channel from above the second first transition wheel 3 in the first transition wheel group, passes through multiple wire-drawing dies on the second wire-drawing channel in sequence, and enters the second third annular groove on the driving wheel mechanism 2, winds at least one circle around the second third annular groove of the driving wheel mechanism 2, and continues to move leftward from below the driving wheel mechanism 2 to below the first transition wheel group to thread the third wire-drawing channel, and so on, until the Nth wire-drawing channel is threaded, the tungsten wire is wound at least one circle around the Nth third annular groove of the driving wheel mechanism 2, and is wound on the wire-receiving mechanism;

[0039] Step 2: Start the wire-releasing mechanism, wire-retrieving mechanism and power mechanism through the controller to draw the tungsten wire;

[0040] Step 3: After the wire drawing work is completed, the wire-releasing mechanism, wire-reeling mechanism and power mechanism are turned off through the controller.

[0041] In this embodiment, by arranging multiple lubricating heating wire drawing mechanisms in one device, the processing of 0.39 mm tungsten wire to finished wire can be completed by one device through one wire drawing process, so that the required equipment occupies less space and improves work efficiency. At the same time, multiple heating devices 6 are integrated into one device, and when the tungsten wire enters the downstream heating device 6 after being heated by the upstream heating device 6, there is no need for too high a heating temperature, thereby fully utilizing the energy of the upstream heating device 6, reducing the power consumption of the downstream heating device 6, and reducing production costs.

[0042] The tungsten wire drawing process in this embodiment is simple to operate. After the wire is manually threaded, the temperature and drawing speed are automatically controlled by the controller. There is no need for manual supervision and timely adjustment of parameters such as temperature and drawing speed. One person can supervise multiple devices, greatly reducing labor costs.

[0043] Specifically, the present embodiment also includes an electrolytic container. In step one, before threading, the front end of the tungsten wire is electrolytically corroded in the electrolytic container to reduce the diameter of the front end of the tungsten wire, thereby facilitating passage through the center hole of the wire drawing die.

[0044] Specifically, the driving wheel mechanism 2 includes a plurality of driving wheels arranged sequentially from the back to the front, each driving wheel is provided with at least one third annular groove, and the power mechanism is used to drive all the driving wheels to rotate.

[0045] The driving wheel mechanism 2 in this embodiment includes at least three driving wheels, a plurality of third annular grooves are arranged on the rearmost driving wheel, and a third annular groove is arranged on the frontmost driving wheel.

[0046] In actual operation, the tungsten wires corresponding to the several driving wheels near the rear are thicker. The thicker tungsten wires are pulled at low speed and are allowed to slip a little, that is, a little slip at low speed has little effect on the quality of the tungsten wire. At this time, multiple third annular grooves can be set on the several driving wheels near the rear, thereby reducing the number of driving motors, so that the cost is reduced while the quality is guaranteed. The tungsten wires corresponding to the several driving wheels near the front are thinner. In order to ensure that the thinner tungsten wire does not slip during high-speed pulling, ensure that the tungsten wire is more stable, reduce wire breakage and improve quality, a third annular groove is set on the several driving wheels near the front, that is, the drawing of a tungsten wire is independently controlled by a driving motor.

[0047] A first tension swing rod is arranged between the front end drawing channel corresponding to the rear driving wheel and the rear end drawing channel corresponding to the front driving wheel of any two adjacent driving wheels. The first tension swing rod is arranged on the frame, and the first tension swing rod is located between the first transition wheel group and the wire-releasing mechanism. A third transition wheel is arranged on the side of each first tension swing rod away from the first transition wheel group. The third transition wheel is arranged on the frame. Each first tension swing rod is connected to a first potentiometer for detecting a change in rotation angle, and each first potentiometer is connected to a controller.

[0048] Based on this, in step one, the tungsten wire extends from the front end drawing channel corresponding to the rear driving wheel of any two adjacent driving wheels and moves to the left to the bottom of the first transition wheel group, passes through the first tension swing rod and bypasses the third transition wheel to move to the right, extends to the right from the first transition wheel 3 of the rear end drawing channel corresponding to the front driving wheel, and continues to pass through multiple drawing dies on the drawing channel.

[0049] Specifically, the power mechanism includes a plurality of power components, and the power components include drive motors and synchronous transmission devices. Each motor drives a drive wheel to rotate through a synchronous transmission device, and each drive motor is connected to a controller.

[0050] Based on this, in step one, the first potentiometer on the first tension swing arm transmits the rotation angle to the controller, and the controller controls the speed matching of the two drive motors corresponding to any two adjacent drive wheels.

[0051] Specifically, the driving motor is arranged on the frame, the driving wheel includes a wheel body and a hollow wheel axle arranged behind the wheel body, the wheel body and the hollow wheel axle of the rear driving wheel of the two adjacent driving wheels are both sleeved on the outside of the hollow wheel axle of the front driving wheel, a bearing is arranged between any two adjacent hollow wheel axles, the hollow wheel axle of the front driving wheel of the two adjacent driving wheels passes through the hollow wheel axle of the rear driving wheel and extends to the outside, the hollow wheel axles of each driving wheel are rotatably installed on the frame, and each driving motor is connected to the hollow wheel axle of a driving wheel through a synchronous transmission device. The multiple driving wheels in this embodiment are arranged coaxially, which is more compact in structure, minimizing the space occupied by the entire device.

[0052] The synchronous transmission device in this embodiment includes a first pulley, a second pulley and a synchronous belt, the first pulley is fixedly sleeved on a hollow axle of a driving wheel, the second pulley is fixedly sleeved on a power output shaft of a driving motor 11, and the synchronous belt is wound around the first pulley and the second pulley. When working, the driving motor drives a hollow axle to rotate through the second pulley, the synchronous belt and the first pulley, thereby realizing the rotation of a driving wheel.

[0053] In this embodiment, multiple lubrication and heating wire drawing mechanisms are arranged in one device, that is, multiple mold devices 7 are integrated into one device, so that the number of driving motors used is significantly reduced compared with the prior art when three devices are used, which can reduce energy consumption and reduce production costs.

[0054] Specifically, a second tension swing rod is arranged on the frame, and the second tension swing rod is located between the first transition wheel group and the wire-releasing mechanism. Multiple first tension swing rods and second tension swing rods are arranged in sequence from back to front. A fourth transition wheel is arranged on the side of the second tension swing rod away from the first transition wheel group. The fourth transition wheel is arranged on the frame, and multiple third transition wheels and fourth transition wheels are arranged in sequence from back to front. A second potentiometer for detecting a change in a rotation angle is connected to the second tension swing rod, and the second potentiometer is connected to a controller.

[0055] Based on this, in step one, after the tungsten wire is wound around the Nth third annular groove of the driving wheel mechanism 2 for at least one circle, it continues to move to the left from under the driving wheel mechanism 2, passes through the second tension swing rod and moves to the right around the fourth transition wheel, and is wound on the wire-winding mechanism. The second potentiometer on the second tension swing rod transmits the rotation angle to the controller, and the controller controls the wire-winding mechanism to match the speed of the driving motor corresponding to the frontmost driving wheel.

[0056] Specifically, an eddy current detection probe is provided between the pay-off mechanism and the first transition wheel assembly, and the eddy current detection probe is arranged on the frame and connected to the controller. Based on this, in step one, the eddy current detection probe performs defect detection on the tungsten wire released by the pay-off mechanism.

[0057] By setting an eddy current detection probe downstream of the wire-releasing mechanism to detect the tungsten wire, when a large defect is detected (still within the qualified range and has been tested before incoming materials), the controller controls the drive motor to appropriately reduce the drawing speed, so that the drawing of the defective area is smoother, reducing the risk of wire breakage, thereby improving the qualified rate.

[0058] Specifically, a third tension swing rod is arranged between the wire-releasing mechanism and the eddy current detection probe, and a fifth transition wheel 8 is arranged between the third tension swing rod and the wire-releasing mechanism.

[0059] Based on this, in step one, the tungsten wire is led out from the wire-releasing mechanism and passes through the fifth transition wheel 8 and the third tension swing rod in sequence, and then enters the first wire drawing channel.

[0060] Specifically, a laser diameter gauge is provided between the driving wheel mechanism 2 and the wire taking-up mechanism. The laser diameter gauge is arranged on the frame and connected to the controller. A sixth transition wheel and a seventh transition wheel are respectively provided on both sides of the laser diameter gauge. The sixth transition wheel and the seventh transition wheel are provided at the same height. By providing the sixth transition wheel and the seventh transition wheel, the finished wire can pass through the laser diameter gauge horizontally.

[0061] Based on this, in step one, the tungsten wire bypasses the fourth transition wheel and moves to the right, passes through the sixth transition wheel and the seventh transition wheel in sequence and is wound on the wire-receiving mechanism, and the laser diameter gauge detects the diameter of the tungsten wire after drawing.

[0062] The finished wire is inspected by setting a laser diameter gauge upstream of the wire-taking mechanism, and the diameter change of the finished wire is fed back to the controller in real time. In addition to recording the diameter fluctuation of the whole reel of finished wire, the wear of the wire drawing die can also be detected, and data analysis can be performed on process parameters such as graphite emulsion lubrication and heating device 6 furnace temperature, and process optimization can be carried out.

[0063] Specifically, the pay-off mechanism includes a pay-off motor and a pay-off wheel 1, which is arranged on a frame and used to drive the pay-off wheel 1 to rotate; the take-up mechanism includes a take-up motor and a take-up wheel, which is arranged on a frame and used to drive the take-up wheel to rotate, and both the pay-off motor and the take-up motor are connected to a controller.

[0064] Based on this, in step 2, the pay-off motor, the take-up motor and the drive motor are turned on by the controller to draw the tungsten wire.

[0065] In step three, after the wire drawing work is completed, the pay-off motor, the take-up motor and the drive motor are turned off through the controller.

[0066] The tungsten wire drawing machine in this embodiment also includes an intermediate transition wheel group, which is arranged at the lower part between the first transition wheel group and the second transition wheel group. The intermediate transition wheel group includes an eighth transition wheel group and a ninth transition wheel group. The eighth transition wheel group is arranged on the side of the second transition wheel group away from the driving wheel mechanism and is located obliquely below the second transition wheel group. The eighth transition wheel group includes a plurality of eighth transition wheels arranged in sequence from back to front. The number of the eighth transition wheels is the same as that of the second transition wheel 4, and the first eighth transition wheel corresponds to the position of the second second transition wheel 4, the second eighth transition wheel corresponds to the position of the third second transition wheel 4, and so on. The ninth transition wheel group is arranged on the side of the first transition wheel group away from the wire release mechanism and is located obliquely below the first transition wheel group. The ninth transition wheel group includes a plurality of ninth transition wheels arranged in sequence from back to front. The number of the ninth transition wheel is the same as that of the eighth transition wheel and the positions correspond one to one.

[0067] During the threading process, the tungsten wire moves from the bottom of the driving wheel mechanism 2 to the left and passes through an eighth transition wheel and a ninth transition wheel in sequence. Specifically, the tungsten wire is wound around the first third annular groove of the driving wheel mechanism 2 for at least one turn, and moves from the bottom of the driving wheel mechanism 2 to the left through the first eighth transition wheel and the first ninth transition wheel to the bottom of the first transition wheel group. The tungsten wire is wound around the Nth third annular groove of the driving wheel mechanism 2 for at least one turn, and moves from the bottom of the driving wheel mechanism 2 to the left through the Nth eighth transition wheel, the Nth ninth transition wheel, the second tension swing rod, and moves to the right around the fourth transition wheel, passes through the sixth transition wheel and the seventh transition wheel in sequence, and is wound around the take-up wheel.

[0068] Specifically, the lubricating device 5 is used to hold lubricant, and a plurality of lubricating through holes are sequentially arranged on the lubricating device 5 from the back to the front, each of which corresponds to a wire drawing channel position, and the lubricant is applied to the surface of the tungsten wire after passing through the lubricating device 5. The lubricating device 5 in this embodiment is used to hold graphite emulsion.

[0069] Specifically, the heating device 6 includes a heating box and a plurality of heating areas arranged in the heating box from back to front, each heating area is provided with a first heating component and a first temperature sensor, the first heating component and the first temperature sensor are connected to the controller, and a plurality of heating through holes are arranged in the heating box from back to front, each heating through hole corresponds to a wire drawing channel position. The first heating component in this embodiment is a first electric heating wire.

[0070] The diameters of the multiple tungsten wires passing through the heating box decrease from back to front. The heating temperature of each heating area is set according to the diameter of the tungsten wire, and the heating area reaches the set temperature through the cooperation of the first heating component and the first temperature sensor and the controller. Specifically, the temperature of the heating area with thicker tungsten wire is set in one way, and the temperature of the heating area with thinner tungsten wire is set in another way, so that the heating areas passed by tungsten wires of different thicknesses have suitable temperatures to meet the needs of the process.

[0071] Specifically, the mold base is provided with a hollow chamber, in which a second heating component and a second temperature sensor are provided, and both the second heating component and the second temperature sensor are connected to the controller so that the mold base can reach the set required temperature. In this embodiment, the second heating component is a second electric heating wire.

[0072] In this specific embodiment, two lubricating and heating wire drawing mechanisms are provided, that is, two die devices 7 are provided, each of which includes a die base and fifteen wire drawing dies arranged on the die base from back to front, the first transition wheel group includes fifteen first transition wheels 3 arranged from back to front, and the second transition wheel group includes fifteen second transition wheels 4 arranged from back to front. That is, the number of wire drawing channels in this embodiment is fifteen.

[0073] The present specification uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A tungsten wire drawing process, characterized in that: A tungsten wire drawing machine is adopted, wherein a wire-releasing mechanism and a wire-receiving mechanism of the tungsten wire drawing machine are respectively arranged on the left and right sides of the upper part of the frame, a driving wheel mechanism is arranged on the frame and located between the wire-releasing mechanism and the wire-receiving mechanism, and a power mechanism is used to provide power to the driving wheel mechanism; a first transition wheel group is arranged between the wire-releasing mechanism and the driving wheel mechanism and is located on a side close to the wire-releasing mechanism, and a second transition wheel group is arranged between the first transition wheel group and the driving wheel mechanism and is located on a side close to the driving wheel mechanism; a plurality of lubricating and heating wire drawing mechanisms are arranged in sequence between the first transition wheel group and the second transition wheel group, and the lubricating and heating wire drawing mechanisms include a lubricating device, a heating device and a mold device arranged in sequence from left to right, and the wire-releasing mechanism, the wire-receiving mechanism, the power mechanism and the heating device are all connected to a controller; The die device comprises a die seat and a plurality of wire drawing dies arranged on the die seat from back to front in sequence, the apertures of the plurality of wire drawing dies on the die seat decrease in sequence from back to front, the first transition wheel group comprises a plurality of first transition wheels arranged in sequence from back to front, the second transition wheel group comprises a plurality of second transition wheels arranged in sequence from back to front, a plurality of third annular grooves for accommodating tungsten wires are arranged in sequence along the axial direction on the driving wheel mechanism, one of the first transition wheels, one of the wire drawing dies of each of the die devices, one of the second transition wheels and one of the third annular grooves are positioned correspondingly and form a wire drawing channel, the apertures of the plurality of wire drawing dies on each of the wire drawing channels decrease in sequence from left to right, the aperture of the wire drawing die on the leftmost side of the front wire drawing channel of the two adjacent wire drawing channels is smaller than the aperture of the wire drawing die on the rightmost side of the rear wire drawing channel; the number of the wire drawing channels is N, the rearmost wire drawing channel is the first wire drawing channel, and the frontmost wire drawing channel is the Nth wire drawing channel; The process includes the following steps: Step 1, the tungsten wire is led out from the pay-off mechanism, enters the first wire drawing channel from above the first first transition wheel in the first transition wheel group, passes through the multiple wire drawing dies on the first wire drawing channel and the first second transition wheel in the second transition wheel group in sequence, enters the first third annular groove on the driving wheel mechanism, winds at least one circle around the first third annular groove of the driving wheel mechanism, and continues to move leftward from below the driving wheel mechanism to below the first transition wheel group; enters the second wire drawing channel from above the second first transition wheel in the first transition wheel group, passes through the multiple wire drawing dies on the second wire drawing channel and the second second transition wheel in the second transition wheel group in sequence, enters the second third annular groove on the driving wheel mechanism, winds at least one circle around the second third annular groove of the driving wheel mechanism, and continues to move leftward from below the driving wheel mechanism to below the first transition wheel group, and threading the third wire drawing channel is performed, and so on, until threading the Nth wire drawing channel is performed, and the tungsten wire is wound at least one circle around the Nth third annular groove of the driving wheel mechanism and is wound on the take-up mechanism; Step 2: starting the wire-releasing mechanism, the wire-retrieving mechanism and the power mechanism through the controller to draw the tungsten wire; Step 3: After the wire drawing work is completed, the wire-releasing mechanism, the wire-reeling mechanism and the power mechanism are turned off by the controller.

2. The tungsten wire drawing process according to claim 1, characterized in that: In step one, before threading, the front end of the tungsten wire is electrolytically corroded to reduce the diameter of the front end of the tungsten wire.

3. The tungsten wire drawing process according to claim 1, characterized in that: The driving wheel mechanism includes a plurality of driving wheels arranged in sequence from back to front, each of the driving wheels is provided with at least one third annular groove, and the power mechanism is used to drive all the driving wheels to rotate; a first tension swing rod is provided between the frontmost wire drawing channel corresponding to the rear driving wheel of any two adjacent driving wheels and the rearmost wire drawing channel corresponding to the front driving wheel, the first tension swing rod is provided on the frame, and the first tension swing rod is located between the first transition wheel group and the wire release mechanism, a third transition wheel is provided on the side of each of the first tension swing rods away from the first transition wheel group, the third transition wheel is provided on the frame, each of the first tension swing rods is connected to a first potentiometer for detecting a change in a rotation angle, and each of the first potentiometers is connected to the controller; In step one, the tungsten wire extends from the front end of the drawing channel corresponding to the rear driving wheel of any two adjacent driving wheels and moves to the left to the bottom of the first transition wheel group, passes through the first tension swing rod and bypasses the third transition wheel to move to the right, extends to the right from the first transition wheel of the drawing channel at the rear end corresponding to the front driving wheel, and continues to pass through the multiple drawing dies on the drawing channel.

4. The tungsten wire drawing process according to claim 3, characterized in that: The power mechanism includes a plurality of power components, each of which includes a drive motor and a synchronous transmission device, each of which drives one of the drive wheels to rotate through one of the synchronous transmission devices, and each of the drive motors is connected to the controller; In step 1, the first potentiometer on the first tension swing arm transmits the rotation angle to the controller, and the controller controls the speed matching of the two driving motors corresponding to any two adjacent driving wheels.

5. The tungsten wire drawing process according to claim 4, characterized in that: The driving motor is arranged on the frame, and the driving wheel includes a wheel body and a hollow wheel axle arranged behind the wheel body. The wheel body and the hollow wheel axle of the rear driving wheel of the two adjacent driving wheels are both gap-sleeved on the outside of the hollow wheel axle of the front driving wheel, and a bearing is arranged between any two adjacent hollow wheel axles. The hollow wheel axle of the front driving wheel of the two adjacent driving wheels passes through the hollow wheel axle of the rear driving wheel and extends to the outside. The hollow wheel axles of each driving wheel are rotatably installed on the frame, and each driving motor is connected to the hollow wheel axle of one driving wheel through a synchronous transmission device.

6. The tungsten wire drawing process according to claim 4, characterized in that: The frame is provided with a second tension swing rod, the second tension swing rod is located between the first transition wheel group and the wire release mechanism, a plurality of the first tension swing rods and the second tension swing rods are arranged in sequence from back to front, a fourth transition wheel is arranged on the side of the second tension swing rod away from the first transition wheel group, the fourth transition wheel is arranged on the frame, a plurality of the third transition wheels and the fourth transition wheels are arranged in sequence from back to front, the second tension swing rod is connected with a second potentiometer for detecting a change in a rotation angle, and the second potentiometer is connected to a controller; In step one, after the tungsten wire is wound around the Nth third annular groove of the driving wheel mechanism for at least one circle, it continues to move to the left from under the driving wheel mechanism, passes through the second tension swing rod and moves to the right around the fourth transition wheel, and is wound around the wire-winding mechanism. The second potentiometer on the second tension swing rod transmits the rotation angle to the controller, and the controller controls the wire-winding mechanism to match the speed of the driving motor corresponding to the frontmost driving wheel.

7. The tungsten wire drawing process according to claim 1, characterized in that: An eddy current detection probe is provided between the pay-off mechanism and the first transition wheel assembly. In step one, the eddy current detection probe performs defect detection on the tungsten wire released by the pay-off mechanism.

8. The tungsten wire drawing process according to claim 7, characterized in that: A third tension swing rod is provided between the wire-releasing mechanism and the eddy current detection probe, and a fifth transition wheel is provided between the third tension swing rod and the wire-releasing mechanism; In step one, the tungsten wire is led out from the wire-releasing mechanism and passes through the fifth transition wheel and the third tension swing rod in sequence, and then enters the first wire drawing channel.

9. The tungsten wire drawing process according to claim 6, characterized in that: A laser diameter measuring instrument is disposed between the driving wheel mechanism and the wire taking-up mechanism, and a sixth transition wheel and a seventh transition wheel are disposed on both sides of the laser diameter measuring instrument, and the sixth transition wheel and the seventh transition wheel are disposed at the same height; In step one, the tungsten wire moves to the right around the fourth transition wheel, passes through the sixth transition wheel and the seventh transition wheel in sequence and is wound around the wire-taking mechanism, and the laser diameter gauge detects the diameter of the tungsten wire after wire drawing.

10. The tungsten wire drawing process according to claim 4, characterized in that: The wire-releasing mechanism comprises a wire-releasing motor and a wire-releasing wheel, wherein the wire-releasing motor is arranged on the frame and used to drive the wire-releasing wheel to rotate; the wire-receiving mechanism comprises a wire-receiving motor and a wire-receiving wheel, wherein the wire-receiving motor is arranged on the frame and used to drive the wire-receiving wheel to rotate, and both the wire-releasing motor and the wire-receiving motor are connected to the controller; In step 2, the pay-off motor, the take-up motor and the drive motor are turned on by the controller to draw the tungsten wire; In step three, after the wire drawing work is completed, the pay-off motor, the take-up motor and the drive motor are turned off by the controller.

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