CN117600255A - High-efficiency sliding-free micro tungsten filament multi-die wire drawing device - Google Patents
High-efficiency sliding-free micro tungsten filament multi-die wire drawing device Download PDFInfo
- Publication number
- CN117600255A CN117600255A CN202311782797.0A CN202311782797A CN117600255A CN 117600255 A CN117600255 A CN 117600255A CN 202311782797 A CN202311782797 A CN 202311782797A CN 117600255 A CN117600255 A CN 117600255A
- Authority
- CN
- China
- Prior art keywords
- wire drawing
- wire
- unit
- sliding
- cone pulley
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005491 wire drawing Methods 0.000 title claims abstract description 447
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 229910052721 tungsten Inorganic materials 0.000 title claims abstract description 26
- 239000010937 tungsten Substances 0.000 title claims abstract description 26
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 38
- 239000000839 emulsion Substances 0.000 claims description 37
- 229910002804 graphite Inorganic materials 0.000 claims description 37
- 239000010439 graphite Substances 0.000 claims description 37
- 238000010438 heat treatment Methods 0.000 claims description 37
- 239000011248 coating agent Substances 0.000 claims description 22
- 238000000576 coating method Methods 0.000 claims description 22
- 239000007787 solid Substances 0.000 claims description 20
- 239000000919 ceramic Substances 0.000 claims description 6
- 238000005485 electric heating Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 26
- 229910001080 W alloy Inorganic materials 0.000 description 24
- 230000008569 process Effects 0.000 description 21
- 238000004804 winding Methods 0.000 description 12
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 9
- 229910052710 silicon Inorganic materials 0.000 description 9
- 239000010703 silicon Substances 0.000 description 9
- 230000001276 controlling effect Effects 0.000 description 7
- 238000005520 cutting process Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 6
- 238000005299 abrasion Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 238000003754 machining Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 102000002151 Microfilament Proteins Human genes 0.000 description 1
- 108010040897 Microfilament Proteins Proteins 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 210000003632 microfilament Anatomy 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/003—Drawing materials of special alloys so far as the composition of the alloy requires or permits special drawing methods or sequences
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/02—Drawing metal wire or like flexible metallic material by drawing machines or apparatus in which the drawing action is effected by drums
- B21C1/04—Drawing metal wire or like flexible metallic material by drawing machines or apparatus in which the drawing action is effected by drums with two or more dies operating in series
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/02—Drawing metal wire or like flexible metallic material by drawing machines or apparatus in which the drawing action is effected by drums
- B21C1/12—Regulating or controlling speed of drawing drums, e.g. to influence tension; Drives; Stop or relief mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C9/00—Cooling, heating or lubricating drawing material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Extraction Processes (AREA)
Abstract
The application relates to the technical field of wire drawing equipment and provides a high-efficiency sliding-free micro tungsten wire multi-die wire drawing device. The high-efficiency sliding-free micro tungsten filament multi-die wire drawing device can produce tungsten filaments with the diameter of [0.03,0.2] mm, and comprises: the paying-off unit, the cone pulley wire drawing unit, the non-sliding wire drawing unit and the wire collecting unit are sequentially arranged along the length direction of the mounting platform; a paying-off tension sensor is arranged between the paying-off unit and the cone pulley wire drawing unit and used for controlling the paying-off speed of the paying-off unit to be matched with the wire drawing speed of the cone pulley wire drawing unit so as to lead the cone pulley wire drawing unit to perform preliminary rough wire drawing on tungsten wires to be processed; the non-slip wire drawing unit is used for performing non-slip wire drawing on the tungsten wire subjected to the preliminary rough wire drawing; and a wire-collecting tension sensor is arranged between the non-sliding wire-drawing unit and the wire-collecting unit and used for controlling the wire-collecting speed of the wire-collecting unit to be matched with the non-sliding wire-drawing speed of the non-sliding wire-drawing unit.
Description
Technical Field
The application relates to the technical field of wire drawing equipment, in particular to a high-efficiency sliding-free micro tungsten wire multi-die wire drawing device.
Background
Along with the rapid development of the photovoltaic field, the demand of the silicon wafer is rapidly increased, and at present, carbon steel cutting wires are mostly adopted for cutting the silicon wafer, so that the double carbon requirement is met, the silicon wafer utilization rate is improved, the thickness and the utilization rate of the silicon wafer are higher, the silicon wafer is required to be thinner, the silicon wafer cut by a single silicon ingot is more, and further, the requirements of finer wire diameter and higher strength are provided for the cutting wires.
The tungsten alloy wire (namely the tungsten wire) has the characteristics of high strength (the breaking force of the tungsten alloy wire with the wire diameter of 0.035mm is more than or equal to 5.0N), good plastic deformation capability (the wire can be processed to 0.020-0.030 mm) and the like, and is an ideal material for preparing the cutting wire as a matrix. However, for cutting wires, not only a high strength index is required, but also a monofilament length of not less than 5 km is ensured.
The index of the silicon chip cutting wire puts out higher requirements on the tungsten alloy wire processing process, particularly in the filament processing stage, the tungsten alloy wire is required to have higher precision, better surface quality, longer length and larger ring diameter, the traditional tungsten alloy wire filament drawing machine adopts sliding wire drawing, and the wire breakage rate is increased in the large-length tungsten alloy wire processing process due to higher strength of the tungsten alloy wire and larger abrasion of a die, so that the surface quality is rough, the high-strength tungsten alloy wire with large length and high dimensional precision cannot be obtained, and the application of the tungsten alloy wire in the silicon chip cutting fields such as photovoltaics, semiconductors and the like is seriously influenced. Improving the machining precision of the micro tungsten alloy wire and reducing the wire breakage probability is a problem to be solved in the machining of the high-strength tungsten alloy wire.
Disclosure of Invention
The invention aims to provide a high-efficiency sliding-free micro tungsten filament multi-die wire drawing device, which is used for solving or relieving the problems in the prior art.
In order to achieve the above object, the present application provides the following technical solutions:
the application provides a high-efficient no slip fine tungsten filament multimode utensil wire drawing device for the tungsten filament of production line footpath at [0.03,0.2] mm includes: the device comprises a paying-off unit, a cone pulley wiredrawing unit, a non-sliding wiredrawing unit and a wire collecting unit; the paying-off unit, the cone pulley wire drawing unit, the non-sliding wire drawing unit and the wire collecting unit are sequentially arranged on the mounting platform along a first direction; wherein the first direction is the length direction of the mounting platform;
the cone pulley wire drawing unit is used for carrying out preliminary rough wire drawing on the tungsten wire to be processed wound on the paying-off unit; the non-slip wire drawing unit is used for performing non-slip wire drawing on the tungsten wire subjected to preliminary rough wire drawing by the cone pulley wire drawing unit; a paying-off tension sensor is arranged between the paying-off unit and the cone pulley wire drawing unit and used for controlling paying-off speed of the paying-off unit so as to be matched with wire drawing speed of the cone pulley wire drawing unit; a wire-collecting tension sensor is arranged between the non-sliding wire-drawing unit and the wire-collecting unit, and the wire-collecting tension sensor is used for controlling the wire-collecting speed of the wire-collecting unit to be matched with the wire-drawing speed of the non-sliding wire-drawing unit;
the cone pulley wire drawing unit includes: the first guide wheel group, the first graphite emulsion coating pipe, the first wire drawing heating furnace, the first wire drawing die seat and the cone pulley group are sequentially arranged along the first direction;
the first guide wheel group comprises a plurality of preliminary wire drawing guide wheels which are arranged in parallel along the second direction and the diameters of which are sequentially reduced; the first graphite emulsion coating pipe is provided with a plurality of graphite emulsion overflow holes which are arranged in parallel along the second direction; the first wire drawing die seat is provided with a plurality of thick wire drawing dies which are arranged in parallel along the second direction and gradually reduce the wire diameter of the wire drawing; the cone pulley group comprises a plurality of wire drawing cone pulleys which are arranged in parallel along the second direction and the diameters of which are sequentially reduced; wherein the second direction is the width direction of the mounting platform; the plurality of preliminary wiredrawing guide wheels, the plurality of graphite emulsion overflow holes, the plurality of rough wiredrawing dies and the plurality of wiredrawing cone pulleys are in one-to-one correspondence along the first direction; the corresponding primary wiredrawing guide wheels and the wiredrawing cone pulley have the same diameter.
Preferably, the maximum diameter of the cone pulley group is not more than 220mm, and the surface of the cone pulley group is sprayed with ceramic.
Preferably, the first wire drawing heating furnace is an electric heating furnace with adjustable temperature, and the heating temperature is less than or equal to 1000 ℃.
Preferably, the first wire drawing heating furnace is mounted on the mounting platform through a movable slide rail, and can move along the second direction on the movable slide rail.
Preferably, the first wire drawing die seat is heated by a resistance wire, and the heating temperature is less than or equal to 600 ℃.
Preferably, the no-slip wire drawing unit comprises: the second guide wheel group, the sensor group, the second graphite emulsion coating pipe, the second wire drawing heating furnace, the second wire drawing die seat and the wire drawing wheel group are sequentially arranged along the first direction;
the second guide wheel group comprises a plurality of non-sliding wiredrawing guide wheels which are arranged in parallel along the second direction and have the same diameter, and the sensor group comprises a plurality of wiredrawing tension sensors which are arranged in parallel along the second direction; the wire drawing wheel group comprises a plurality of wire drawing wheels which are arranged in parallel along the second direction, and the wire drawing wheels have the same diameter and run independently; the plurality of non-sliding wiredrawing guide wheels, the plurality of wiredrawing tension sensors and the plurality of wiredrawing wheels are arranged in a one-to-one correspondence manner along the first direction and are arranged in parallel along the second direction; the wire drawing tension sensor is used for controlling the wire drawing speed of the corresponding wire drawing wheel;
the structures of the second graphite emulsion coating pipe, the second wire drawing heating furnace and the second wire drawing die seat are respectively the same as those of the first graphite emulsion coating pipe, the first wire drawing heating furnace and the first wire drawing die seat; the second wire drawing die seat is provided with a plurality of non-sliding wire drawing dies which are arranged in parallel along a second direction and gradually reduce the wire diameter of the wire drawing; the plurality of non-sliding wire drawing dies are respectively in one-to-one correspondence with the plurality of wire drawing wheels.
Preferably, a plurality of the drawing wheels are mounted on a multistage drawing shaft, and the multistage drawing shaft comprises: the hollow wire drawing shafts are sleeved one by one in a rotating way, the lengths of the sleeved hollow wire drawing shafts are sequentially reduced along the radial direction, and two ends of the inner hollow wire drawing shaft extend out of two ends of the outer hollow wire drawing shaft; the innermost hollow wire drawing shaft is sleeved on the solid wire drawing shaft in a rotating way along the radial inward direction, and two ends of the solid wire drawing shaft respectively extend out of two ends of the innermost hollow wire drawing shaft; the wire drawing wheel is arranged at one end of the hollow wire drawing shaft, and the hollow wire drawing shafts and the solid wire drawing shafts are driven by separate servo motors respectively.
Preferably, the hollow wire drawing shaft and the solid wire drawing shaft are respectively in driving connection with the corresponding servo motor through bevel gear transmission.
Preferably, the diameter of the wire drawing wheel is [60, 150] mm, and ceramic is sprayed on the surface of the wire drawing wheel.
The beneficial effects are that:
the high-efficient no-slip micro tungsten filament multi-die wire drawing device provided by the embodiment of the application can produce tungsten filaments with the line diameter of [0.03,0.2] mm, and in the wire drawing device, a paying-off unit, a cone pulley wire drawing unit, a no-slip wire drawing unit and a wire collecting unit are sequentially arranged on a mounting platform along the length direction of the mounting platform. A paying-off tension sensor is arranged between the paying-off unit and the cone pulley wire drawing unit, and the paying-off tension sensor is used for controlling the paying-off speed of the paying-off unit to be matched with the wire drawing speed of the cone pulley wire drawing unit, so that the cone pulley wire drawing unit performs primary rough wire drawing on the tungsten wire to be processed, which is wound on the paying-off unit; the non-slip wire drawing unit is used for performing non-slip wire drawing on the tungsten wire subjected to primary rough wire drawing by the cone pulley wire drawing unit; and a wire-collecting tension sensor is arranged between the non-sliding wire-drawing unit and the wire-collecting unit and is used for controlling the wire-collecting speed of the wire-collecting unit to be matched with the non-sliding wire-drawing speed of the non-sliding wire-drawing unit.
In the cone pulley wire drawing unit, a first guide wheel group, a first graphite emulsion coating pipe, a first wire drawing heating furnace, a first wire drawing die seat and a cone pulley group are sequentially arranged along the length direction of the installation unit. The first guide wheel group comprises a plurality of preliminary wire drawing guide wheels which are arranged in parallel along the width direction of the mounting platform and the diameters of which are sequentially reduced; a plurality of graphite emulsion overflow holes which are arranged in parallel along the width direction of the mounting platform are formed in the first graphite emulsion coating pipe, and a plurality of thick wire drawing dies which are arranged in parallel along the width direction of the mounting platform and gradually reduce the wire drawing diameter are arranged on the first wire drawing die seat; the cone pulley group comprises a plurality of wire drawing cone pulleys which are arranged in parallel along the width direction of the mounting platform and the diameters of which are sequentially reduced. The plurality of preliminary wire drawing guide pulleys, the plurality of graphite emulsion overflow holes, the plurality of thick wire drawing dies and the plurality of wire drawing cone pulleys are in one-to-one correspondence along the width direction of the mounting platform, and the diameters of the corresponding preliminary wire drawing guide pulleys and the wire drawing cone pulleys are the same.
By means of the method, the primary sliding rough wire drawing is carried out on the tungsten wire to be processed through the cone pulley wire drawing unit, the wire diameter of the tungsten wire to be processed is primarily reduced, and on one hand, the abrasion on a die in the non-sliding wire drawing process can be reduced; on the other hand, the paying-off tension sensor and the paying-off tension sensor are combined to control the paying-off speed in real time, so that the subsequent wire breakage in the non-sliding wire drawing process is avoided, the problems of high wire breakage rate, low dimensional accuracy, poor surface quality, small loop diameter and the like of the fine tungsten alloy wire are effectively solved, and a guarantee is provided for preparing and processing the fine tungsten alloy wire with high strength and large length.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. Wherein:
FIG. 1 is a schematic diagram of a high-efficiency slip-free micro-tungsten filament multi-die wire drawing apparatus according to some embodiments of the present application;
FIG. 2 is a schematic structural view of a first pulley set according to some embodiments of the present application;
FIG. 3 is a schematic illustration of an installation of a tower wheel set provided in accordance with some embodiments of the present application;
fig. 4 is a schematic structural view of a multi-stage wire drawing shaft provided according to some embodiments of the present application;
fig. 5 is a partial view of the multi-stage drawing shaft of fig. 4 at C.
Reference numerals illustrate:
1. a pay-off reel; 2. a line of defense tension sensor; 3. a preliminary wiredrawing guide wheel; 4. a first graphite emulsion coated tube; 5. a first wire drawing heating furnace; 6. a first wire drawing die holder; 7. a wire drawing cone pulley; 8. the wire drawing guide wheel does not slide; 9. a wire drawing tension sensor; 10. a second graphite emulsion coated tube; 11. a second wire drawing heating furnace; 12. a second wire drawing die seat; 13. a wire drawing wheel; 14. a multi-stage wire drawing shaft; 15. a wire winding tension sensor; 16. a take-up reel; 17. a bearing seat; 18. a hollow wire drawing shaft; 19. a drive bevel gear; 20. a solid wire drawing shaft; 21. a compacting plate; 22. a fastener; 23. a rolling bearing; 24. a bearing end cap; 25. a tower wheel shaft.
Detailed Description
The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. Various examples are provided by way of explanation of the present application and not limitation of the present application. Indeed, it will be apparent to those skilled in the art that modifications and variations can be made in the present application without departing from the scope or spirit of the application. For example, features illustrated or described as part of one embodiment can be used on another embodiment to yield still a further embodiment. Accordingly, it is intended that the present application include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
The existing tungsten alloy microfilament is processed by adopting a sliding type wire drawing device, and in the processing process, firstly, the surface quality of the finished tungsten alloy wire is poor due to the relative sliding in the wire drawing process; secondly, the abrasion of the die is large in the wire drawing process of the tungsten alloy wire, the dimensional change of the die is obvious, the pass reduction rate is changed, and then the wire breakage is caused; thirdly, sliding exists in the wire drawing process, so that stress concentration is increased, and the diameter of a finished product micro tungsten alloy wire coil is too small, so that the subsequent use is affected; fourth, the single-row no-sliding wire drawing dies are arranged in sequence, and a heating furnace is arranged behind each wire drawing die, so that the length of a wire drawing machine is too long, wire fluctuation is serious in the wire drawing process, and the wire breakage probability is increased. These problems seriously affect the machining precision, surface quality and monofilament length of the micro tungsten alloy wire, and bring inconvenience to the application of the micro tungsten alloy wire.
Based on this, this application has proposed a high-efficient no slip fine tungsten filament multimode utensil wire drawing device, and this wire drawing device can the production line footpath be in [0.03,0.2] mm's tungsten filament. The wire drawing device includes: pay-off unit, cone pulley wire drawing unit, no slip wire drawing unit and take-up unit. The paying-off unit, the cone pulley wire drawing unit, the non-sliding wire drawing unit and the wire collecting unit are sequentially arranged on the mounting platform along the length direction (namely the first direction) of the mounting platform.
A pay-off tension sensor 2 is arranged between the pay-off unit and the cone pulley drawing unit. The paying-off tension sensor 2 is used for controlling the paying-off speed of the paying-off unit to be matched with the wire drawing speed of the cone pulley wire drawing unit, so that the cone pulley wire drawing unit performs primary rough wire drawing on the tungsten wire to be processed, which is wound on the paying-off unit.
A wire-winding tension sensor 15 is provided between the wire-winding unit and the non-slip wire-drawing unit. The wire-collecting tension sensor 15 is used for controlling the wire-collecting speed of the wire-collecting unit to match the wire-drawing speed of the non-sliding wire-drawing unit, so that the non-sliding wire-drawing unit performs non-sliding wire drawing on the tungsten wire subjected to primary rough wire drawing by the cone pulley wire-drawing unit, the wire-drawing surface quality and stability are improved, and the wire-drawing die proportion is reduced.
By means of the method, the primary sliding rough wire drawing is carried out on the tungsten wire to be processed through the cone pulley wire drawing unit, the wire diameter of the tungsten wire to be processed is reduced preliminarily, die abrasion in the process of non-sliding wire drawing is reduced, meanwhile, the wire drawing and paying-off speed is controlled in real time by combining the paying-off tension sensor 2 and the wire collecting tension sensor 15, the subsequent wire breakage in the process of non-sliding wire drawing is avoided, the problems that the wire breakage rate of the fine tungsten alloy wire drawing is high, the dimensional accuracy is low, the surface quality is poor, the ring diameter is small and the like are effectively solved, and guarantee is provided for preparing and processing the high-strength and large-length fine tungsten alloy wire.
In this application, mounting platform adopts platelike structure, is provided with different installing support on platelike structure to corresponding unwrapping wire unit, cone pulley wire drawing unit, no slip wire drawing unit and take-up unit of installation. The paying-off unit comprises a paying-off disc 1, a paying-off motor (servo) and the like, wherein tungsten wires to be processed are wound on the paying-off disc 1, the paying-off disc 1 is arranged at the output end of the paying-off motor in a quick connection mode, and the paying-off motor drives the paying-off disc 1 to rotate; the paying-off motor is detachably mounted on the mounting platform through a corresponding bracket.
The paying-off tension sensor 2 is arranged between the paying-off unit and the cone pulley wiredrawing unit and consists of a damping motor (servo), an angle sensor and a wire guide wheel. After the tungsten wire to be processed on the pay-off reel 1 passes through the wire guide wheel, the tungsten wire enters the cone pulley wire drawing unit for preliminary sliding rough wire drawing. The relative position of the wire guide wheel in the wire drawing process is measured through the angle sensor, then a damping motor (servo) converts a measured relative position signal into an electric signal, and further the motor rotating speed of the paying-off unit is adjusted to control the stability of the wire drawing process.
In this application, cone pulley wire drawing unit is used for carrying out preliminary thick wire drawing to the tungsten filament of waiting to process, and after waiting to process the preliminary thick wire drawing of tungsten filament through cone pulley wire drawing unit, the wire footpath suitably reduces, can effectively avoid the broken wire in the no slip wire drawing in-process, effectively guarantees the processing length of fine tungsten filament. In a specific example, the cone pulley assembly comprises: a first guide wheel group, a first graphite emulsion coating pipe 4, a first wire drawing heating furnace 5, a first wire drawing die seat 6 and a cone pulley group are sequentially arranged along the length direction of the mounting unit. The first guide wheel group comprises a plurality of preliminary wiredrawing guide wheels 3 which are arranged in parallel along the width direction of the mounting platform and the diameters of which are sequentially reduced. Specifically, the preliminary wire drawing guide wheels 3 are arranged close to the paying-off tension sensor 2, a plurality of preliminary wire drawing guide wheels 3 are arranged in parallel along the width direction of the installation platform, and the plurality of preliminary wire drawing guide wheels 3 are all installed on the same sliding wire drawing shaft and are installed on the installation platform through corresponding brackets.
The first graphite emulsion coating pipe 4 is provided with a plurality of graphite emulsion overflow holes which are arranged in parallel along the width direction of the mounting platform, and the first wire drawing die seat 6 is provided with a plurality of thick wire drawing dies which are arranged in parallel along the width direction of the mounting platform and gradually reduce the wire drawing diameter; the cone pulley group comprises a plurality of cone pulleys 7 which are arranged in parallel along the width direction of the mounting platform and the diameters of which are sequentially reduced. The plurality of preliminary wire drawing guide pulleys 3, the plurality of graphite emulsion overflow holes, the plurality of thick wire drawing dies and the plurality of wire drawing cone pulleys 7 are in one-to-one correspondence along the width direction of the installation platform, and the diameters of the corresponding preliminary wire drawing guide pulleys 3 and the wire drawing cone pulleys 7 are the same. Therefore, in the wire drawing process, the linear speed of the primary wire drawing guide wheel 3 is the same as that of the wire drawing cone pulley 7, the stability of tungsten wires is better, and compared with a traditional wire drawing straight barrel, the wire drawing cone pulley 7 and the primary wire drawing guide wheel 3 cooperate, so that the wire drawing speed can be effectively improved.
In the wire drawing process, after passing through the wire guide wheel of the paying-off tension sensor 2, a tungsten wire to be processed sequentially passes through the preliminary wire drawing guide wheel 3 and the graphite emulsion overflow hole, and after being coated with graphite emulsion on the surface, the tungsten wire enters the first wire drawing heating furnace 5 for heating, then passes through the rough wire drawing die and reaches the wire drawing cone pulley 7 of the cone pulley group. And sequentially circulating, and circularly winding among a plurality of primary wire drawing guide wheels 3 and different wire drawing cone pulleys 7 of the cone pulley group. The tower wheel group is driven by the driving servo motor to rotate, so that preliminary thick wire drawing of tungsten wires to be processed is realized. The cone pulley group is of an integrated structure or a detachable assembly structure. In a specific example, the cone pulley 7 is connected to the cone pulley shaft 25 by a key (flat key or spline) and a nut, and the cone pulley shaft 25 is connected to the driving servo motor by a coupling. The plurality of preliminary wiredrawing guide wheels 3 are arranged on the same guide wheel shaft (stepped shaft) and driven to rotate by a driving motor (servo).
In the first wire drawing heating furnace 5, tungsten wires are heated by electric furnace wires, and the heating temperature is less than or equal to 1000 ℃. The temperature of the first wire drawing heating furnace 5 can be controlled and regulated in real time, and the first wire drawing heating furnace 5 is installed on the installation platform through a movable sliding rail and can move along a second direction on the movable sliding rail. Therefore, when wire threading is started, the first wire drawing heating furnace 5 can be moved away, wire breakage caused by heating the wire is avoided, and when normal drawing is started, the first wire drawing heating furnace 5 is moved to heat the wire.
In the application, the diameter of the primary wiredrawing guide wheel 3 is the same as that of the wiredrawing cone pulley 7, and the maximum diameter of the wiredrawing cone pulley 7 of the cone pulley group is not more than 220mm, so that the tungsten wire is effectively prevented from being broken in the primary rough wiredrawing process; and ceramics are sprayed on the surfaces of the primary wiredrawing guide wheel 3 and the tower wheel group so as to effectively increase the hardness, the smoothness and the wear resistance of the primary wiredrawing guide wheel 3 and the wiredrawing tower wheel 7. In addition, the thick wire drawing mould embedding is in the mould groove on the first wire drawing mould seat 6, and in the second direction, from front to back, the wire drawing line footpath of a plurality of thick wire drawing moulds reduces along the second direction gradually, and first wire drawing mould seat 6 heats through the resistance wire, and heating temperature is less than or equal to 600 ℃ to effectively promote the life of mould. Therefore, under the action of a plurality of thick wire drawing dies, the wire diameter of the tungsten wire is gradually reduced through multi-pass wire drawing.
After passing through the thick wire drawing die (wire drawing die with the smallest wire diameter) at the outermost side in the second direction, the tungsten wire enters a non-sliding linear wire drawing unit for non-sliding wire drawing, and in the non-sliding wire drawing unit, the wire diameter of the tungsten wire is further reduced through multi-pass non-sliding wire drawing. Wherein, no slip wire drawing unit includes: the second guide wheel group, the sensor group, the second graphite emulsion coating pipe 10, the second wire drawing heating furnace 11, the second wire drawing die seat 12 and the wire drawing wheel 13 are sequentially arranged along the first direction. The structures of the second graphite emulsion coating pipe 10, the second wire drawing heating furnace 11 and the second wire drawing die seat 12 are respectively the same as those of the first graphite emulsion coating pipe 4, the first wire drawing heating furnace 5 and the first wire drawing die seat 6; the second wire drawing die holder 12 is provided with a plurality of non-slip wire drawing dies arranged side by side in the second direction and gradually decreasing in wire drawing diameter.
In this application, the second guide wheel set includes a plurality of non-slip wiredrawing guide wheels 8 arranged side by side in the second direction and having the same diameter. Specifically, in the second direction, the innermost non-slip wiredrawing guide wheel 8 is in line with the wiredrawing cone pulley 7 at the outermost in the second direction in the tower pulley group. That is, in the second direction, the innermost non-slip wire drawing guide wheel 8 is aligned with the outermost thick wire drawing die (wire drawing die with the smallest wire diameter) in the second direction, whereby the tungsten wire passing through the outermost thick wire drawing die (wire drawing die with the smallest wire diameter) in the cone pulley wire drawing unit enters the non-slip wire drawing unit, and then passes through the innermost non-slip wire drawing guide wheel 8 in the second direction first.
In the no-slip wire drawing unit, the sensor group includes a plurality of wire drawing tension sensors 9 arranged side by side in the second direction, and the plurality of wire drawing tension sensors 9 are arranged in one-to-one correspondence with the plurality of no-slip wire drawing guide wheels 8 in the first direction and are arranged side by side in the second direction. After passing through the wire drawing tension sensor 9, the tungsten wire passes through a graphite emulsion overflow hole on the second graphite emulsion coating pipe 10, and the surface is coated with graphite emulsion, and then enters a non-sliding wire drawing die on the second wire drawing die seat 12 after being heated by the second wire drawing heating furnace 11. The structural form of the wire drawing tension sensor 9 is the same as that of the wire paying-off tension sensor 2, and will not be described in detail here.
In the non-slip wire drawing unit, the wire drawing wheel 13 group comprises a plurality of wire drawing wheels 13 which are arranged in parallel along the second direction, the wire drawing wheels 13 are respectively in one-to-one correspondence with the wire drawing dies and the wire drawing tension sensors 9, and the diameters of the wire drawing wheels 13 are the same and are mutually independent to operate. The corresponding wire drawing speed of the wire drawing wheel 13 is controlled through the corresponding wire drawing tension sensor 9, so that no-slip wire drawing is realized. The plurality of drawing wheels 13 are respectively in one-to-one correspondence with the plurality of graphite emulsion overflow holes arranged on the second graphite emulsion coating pipe 10 and the plurality of drawing dies arranged on the second drawing die seat 12 in the non-sliding drawing unit along the first direction, and are uniformly distributed in parallel along the second direction. Here, the diameters of the plurality of drawing wheels 13 are all 60, 150mm, and the surfaces are all coated with ceramics.
In this application, a plurality of wire drawing wheels 13 are installed on multistage wire drawing shaft 14, and multistage wire drawing shaft 14 includes: the plurality of hollow wire drawing shafts 18 and the solid wire drawing shaft 20 are sleeved in a one-to-one rotation manner, the lengths of the sleeved hollow wire drawing shafts 18 are sequentially reduced along the radial direction outwards, and two ends of the inner hollow wire drawing shaft 18 extend out of two ends of the outer hollow wire drawing shaft 18. Radially inwards, the innermost hollow wire drawing shaft 18 is rotationally sleeved on the solid wire drawing shaft 20, and two ends of the solid wire drawing shaft 20 respectively extend out of two ends of the innermost hollow wire drawing shaft 18. The rotary sleeve of the hollow wire drawing shaft 18 and the solid wire drawing shaft 20 is specifically in rotary connection through a rotary bearing. The outermost hollow wire drawing shaft 18 is connected to the mounting platform through a bearing seat 17.
Wherein, the wire drawing wheel 13 is installed at one end of the hollow wire drawing shaft 18, and each hollow wire drawing shaft 18 and the solid wire drawing shaft 20 are respectively driven by separate servo motors. Specifically, the hollow wire drawing shaft 18 and the solid wire drawing shaft 20 are respectively in driving connection with corresponding servo motors through bevel gear transmission. That is, at the end far away from the wire drawing wheel 13, the end parts of the hollow wire drawing shaft 18 and the solid wire drawing shaft 20 are respectively provided with a transmission bevel gear 19, and the transmission bevel gears are driven by corresponding servo motors.
In a specific example, stepped bosses are respectively arranged at two ends of the solid wire drawing shaft 20 and the hollow wire drawing shaft 18, the wire drawing wheel 13 and the transmission bevel gear 19 are respectively in interference fit with the stepped bosses at two ends of the solid wire drawing shaft 20 and the hollow wire drawing shaft 18, and one end of the hollow wire drawing shaft 18 provided with the transmission bevel gear 19 is also provided with external threads so as to further compress the bevel gear on the hollow wire drawing shaft 18 through the threaded fit of the fastener 22.
Meanwhile, the end part of the hollow wire drawing shaft 18 is also provided with a bearing mounting hole, a rolling bearing 23 is mounted in the bearing mounting hole, and the end part of the hollow wire drawing shaft 18 is also connected with a bearing end cover 24 in a threaded manner so as to press the rolling bearing 23 through the bearing end cover 24. On the solid wire drawing shaft 20, an end portion of one end where the drive bevel gear 19 is installed is provided with a threaded blind hole to press the drive bevel gear 19 against the end portion of the solid wire drawing shaft 20 by a pressing plate 21.
After the tungsten wire preliminarily and roughly drawn by the cone pulley drawing unit is guided by the non-sliding drawing guide wheel 8, the tungsten wire sequentially passes through the drawing tension sensor 9, the second graphite emulsion coating pipe 10 and the second drawing heating furnace 11 and then enters a drawing die in the second drawing die seat 12, and then is further drawn by the corresponding independently operated drawing wheel 13, so that the wire diameter of the tungsten wire preliminarily and roughly drawn is further reduced, and the dimensional precision and the surface quality of the tungsten alloy wire are further improved. Through the cooperation of the wire drawing tension sensor 9 and the wire drawing wheel 13 which independently operates, each pass can be independently controlled when wire drawing is performed, and sliding in the wire drawing process is effectively avoided.
In the present application, the wire winding unit is composed of a wire winding disc 16, a wire winding motor (servo) and the like, the wire winding disc 16 is driven by the wire winding motor, and the wire winding is performed on the tungsten wire which is drawn after passing through the non-sliding wire drawing unit. In the second direction, the take-up reel 16, the wire drawing wheel 13 at the outermost side and the non-sliding wire drawing guide wheel 8 are positioned on the same straight line, a wire drawing tension sensor 15 is arranged between the take-up reel 16 and the wire drawing wheel 13 at the outermost side, after the wire drawing is completed, the tungsten wire passes through the wire drawing tension sensor 15, the wire drawing is carried out on the take-up reel 16, and the wire drawing speed is controlled through the wire drawing tension sensor 15, so that the wire drawing speed is matched with the speed of the wire drawing wheel 13, and non-sliding wire drawing is realized. The wire winding tension sensor 15 is the same as the wire unwinding tension sensor 2, and will not be described in detail here.
The wire drawing device of this application is fixed at the course of the work, will wait to process the tungsten filament in the change silk cup on mounting platform from pay off reel 1 with the head corruption attenuation, then through unwrapping wire tension sensor 2 to after first graphite emulsion coating pipe 4, first wire drawing heating furnace 5, the thick wire drawing mould in the cone pulley wire drawing unit in proper order, make a round trip winding between the wire drawing cone pulley 7 of preliminary wire drawing guide pulley 3 and tower wheelset, finally get into no slip wire drawing unit after the thick wire drawing mould of the outermost side in the second direction.
In the non-sliding wire drawing unit, after sequentially passing through the non-sliding wire drawing guide wheel 8, the wire drawing tension sensor 9, the second graphite emulsion coating pipe 10, the second wire drawing heating furnace 11 and the wire drawing die in the second wire drawing die seat 12, the wire drawing unit winds back and forth between the wire drawing wheel 13 and the non-sliding wire drawing guide wheel 8, finally enters the wire collecting tension sensor 15 after passing through the wire drawing die at the outermost side in the second direction in the second wire drawing die seat 12, and is collected by the wire collecting disc 16.
The utility model provides a wire drawing device carries out preliminary slip thick wire drawing to the tungsten filament of processing through cone pulley wire drawing unit, will wait to process the wire diameter of tungsten filament and carry out preliminary reduction, reduce the mould wearing and tearing to no slip wire drawing in-process, combine unwrapping wire tension sensor 2, receive line tension sensor 15 simultaneously and carry out real-time control to the line speed of receiving, avoid follow-up in no slip wire drawing in-process broken wire, effectively solved fine tungsten alloy wire drawing broken wire rate height, low in dimensional accuracy, the poor surface quality, the circle is through little scheduling problem, for high strength, the fine tungsten alloy wire preparation processing of long length provides the guarantee.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims (9)
1. A high-efficiency sliding-free micro tungsten filament multi-die wire drawing device is characterized in that the device is used for producing tungsten filaments with the diameter of [0.03,0.2] mm, and comprises: the device comprises a paying-off unit, a cone pulley wiredrawing unit, a non-sliding wiredrawing unit and a wire collecting unit; the paying-off unit, the cone pulley wire drawing unit, the non-sliding wire drawing unit and the wire collecting unit are sequentially arranged on the mounting platform along a first direction; wherein the first direction is the length direction of the mounting platform;
the cone pulley wire drawing unit is used for carrying out preliminary rough wire drawing on the tungsten wire to be processed wound on the paying-off unit; the non-slip wire drawing unit is used for performing non-slip wire drawing on the tungsten wire subjected to preliminary rough wire drawing by the cone pulley wire drawing unit; a paying-off tension sensor is arranged between the paying-off unit and the cone pulley wire drawing unit and used for controlling paying-off speed of the paying-off unit so as to be matched with wire drawing speed of the cone pulley wire drawing unit; a wire-collecting tension sensor is arranged between the non-sliding wire-drawing unit and the wire-collecting unit, and the wire-collecting tension sensor is used for controlling the wire-collecting speed of the wire-collecting unit to be matched with the wire-drawing speed of the non-sliding wire-drawing unit;
the cone pulley wire drawing unit includes: the first guide wheel group, the first graphite emulsion coating pipe, the first wire drawing heating furnace, the first wire drawing die seat and the cone pulley group are sequentially arranged along the first direction;
the first guide wheel group comprises a plurality of preliminary wire drawing guide wheels which are arranged in parallel along the second direction and the diameters of which are sequentially reduced; the first graphite emulsion coating pipe is provided with a plurality of graphite emulsion overflow holes which are arranged in parallel along the second direction; the first wire drawing die seat is provided with a plurality of thick wire drawing dies which are arranged in parallel along the second direction and gradually reduce the wire diameter of the wire drawing; the cone pulley group comprises a plurality of wire drawing cone pulleys which are arranged in parallel along the second direction and the diameters of which are sequentially reduced; wherein the second direction is the width direction of the mounting platform; the plurality of preliminary wiredrawing guide wheels, the plurality of graphite emulsion overflow holes, the plurality of rough wiredrawing dies and the plurality of wiredrawing cone pulleys are in one-to-one correspondence along the first direction; the corresponding primary wiredrawing guide wheels and the wiredrawing cone pulley have the same diameter.
2. The high-efficiency slip-free micro-fine tungsten wire multi-die wire drawing device according to claim 1, wherein the maximum diameter of a wire drawing cone pulley of the cone pulley group is not more than 220mm, and the surface of the cone pulley group is sprayed with ceramic.
3. The efficient sliding-free micro-fine tungsten wire multi-die wire drawing device according to claim 1, wherein the first wire drawing heating furnace is an electric heating furnace with adjustable temperature, and the heating temperature is less than or equal to 1000 ℃.
4. The high-efficiency, slip-free, multi-die wire drawing apparatus of claim 3 wherein the first wire drawing furnace is mounted on the mounting platform by a moving slide rail and is movable on the moving slide rail in the second direction.
5. The efficient slip-free micro-tungsten wire multi-die wire drawing device according to claim 1, wherein the first wire drawing die seat is heated by a resistance wire, and the heating temperature is less than or equal to 600 ℃.
6. The high efficiency, slip-free micro-tungsten wire multi-die wire drawing apparatus of claim 1 wherein the slip-free wire drawing unit comprises: the second guide wheel group, the sensor group, the second graphite emulsion coating pipe, the second wire drawing heating furnace, the second wire drawing die seat and the wire drawing wheel group are sequentially arranged along the first direction;
the second guide wheel group comprises a plurality of non-sliding wiredrawing guide wheels which are arranged in parallel along the second direction and have the same diameter, and the sensor group comprises a plurality of wiredrawing tension sensors which are arranged in parallel along the second direction; the wire drawing wheel group comprises a plurality of wire drawing wheels which are arranged in parallel along the second direction, and the wire drawing wheels have the same diameter and run independently; the plurality of non-sliding wiredrawing guide wheels, the plurality of wiredrawing tension sensors and the plurality of wiredrawing wheels are arranged in a one-to-one correspondence manner along the first direction and are arranged in parallel along the second direction; the wire drawing tension sensor is used for controlling the wire drawing speed of the corresponding wire drawing wheel;
the structures of the second graphite emulsion coating pipe, the second wire drawing heating furnace and the second wire drawing die seat are respectively the same as those of the first graphite emulsion coating pipe, the first wire drawing heating furnace and the first wire drawing die seat; the second wire drawing die seat is provided with a plurality of non-sliding wire drawing dies which are arranged in parallel along a second direction and gradually reduce wire drawing diameters, and the non-sliding wire drawing dies are respectively in one-to-one correspondence with the wire drawing wheels.
7. The high efficiency, slip-free micro-tungsten wire multi-die wire drawing apparatus of claim 1 wherein a plurality of said wire drawing wheels are mounted on a multi-stage wire drawing shaft comprising: the hollow wire drawing shafts are sleeved one by one in a rotating way, the lengths of the sleeved hollow wire drawing shafts are sequentially reduced along the radial direction, and two ends of the inner hollow wire drawing shaft extend out of two ends of the outer hollow wire drawing shaft; the innermost hollow wire drawing shaft is sleeved on the solid wire drawing shaft in a rotating way along the radial inward direction, and two ends of the solid wire drawing shaft respectively extend out of two ends of the innermost hollow wire drawing shaft;
the wire drawing wheel is arranged at one end of the hollow wire drawing shaft, and each hollow wire drawing shaft and each solid wire drawing shaft are driven by an independent servo motor.
8. The efficient slip-free micro-tungsten wire multi-die wire drawing device according to claim 7, wherein the hollow wire drawing shaft and the solid wire drawing shaft are respectively connected with the corresponding servo motor in a driving manner through bevel gears.
9. The efficient sliding-free micro tungsten filament multi-die wire drawing device according to claim 8, wherein the diameter of the wire drawing wheel is 60-150 mm, and ceramic is sprayed on the surface of the wire drawing wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311782797.0A CN117600255A (en) | 2023-12-22 | 2023-12-22 | High-efficiency sliding-free micro tungsten filament multi-die wire drawing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311782797.0A CN117600255A (en) | 2023-12-22 | 2023-12-22 | High-efficiency sliding-free micro tungsten filament multi-die wire drawing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117600255A true CN117600255A (en) | 2024-02-27 |
Family
ID=89956349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311782797.0A Pending CN117600255A (en) | 2023-12-22 | 2023-12-22 | High-efficiency sliding-free micro tungsten filament multi-die wire drawing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117600255A (en) |
-
2023
- 2023-12-22 CN CN202311782797.0A patent/CN117600255A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101444798B (en) | Tension linear drawing machine | |
| CN117244954B (en) | Multimode hot wire drawing machine | |
| CN117600255A (en) | High-efficiency sliding-free micro tungsten filament multi-die wire drawing device | |
| CN101559441A (en) | Wire drawing machine | |
| CN117564112A (en) | High-efficiency sliding-free superfine tungsten filament multi-die wire drawing device | |
| CN208309265U (en) | A kind of single-wheel multifibres actinobacillus device | |
| CN105382948B (en) | A kind of solar silicon wafers steel wire used for cutting and its production method | |
| CN208600485U (en) | A kind of manufacturing device of small bore high-precision hairbrush anchor profile shapes | |
| CN113546975B (en) | Metal wire drawing machine | |
| CN211803134U (en) | Novel steel bar cold-drawing machine | |
| CN219025419U (en) | Wire drawing straighter device for small-diameter steel wire | |
| CN214348685U (en) | Metal superfine wire processing device | |
| CN117505560A (en) | Multimode variable frequency wire drawing device and method for thick tungsten wire drawing | |
| CN219401703U (en) | Sliding type multi-mode wire drawing system for processing metal wire | |
| CN214022639U (en) | Single-reel multi-mode secondary wire drawing system for titanium alloy wire | |
| CN1864886A (en) | Manufacturing method of zinc-coated steel wire for main rope of suspension bridge | |
| CN112742889B (en) | Production line of low stress relaxation aluminium package steel wire | |
| CN201760454U (en) | Slip ring type planet rolling drawing wheel | |
| CN215143433U (en) | Water tank type iron wire drawing machine | |
| CN220796315U (en) | Parallel multi-wire core composite enameled wire | |
| CN216397556U (en) | Traction wire drawing mechanism | |
| CN216175382U (en) | High-speed filament accumulating machine with large filament accumulating quantity | |
| CN114753038B (en) | Continuous shaping process and equipment for fiber strands | |
| CN115009924B (en) | Efficient duplex position automatic wire winding unit | |
| CN201183071Y (en) | Drawbench |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |