Double-wire-drawing self-checking type special-shaped die

Abstract

The utility model discloses a double-wire-drawing self-inspection type special-shaped die which comprises an inspection seat and a double-wire-drawing special-shaped die body, a controller, a marking line, a positioning guide column and a vertical part are sequentially arranged on the top of the inspection seat from left to right in the Y-axis direction, and fixing seats are symmetrically and fixedly connected to the surface of the vertical part. The surface of the fixed seat is in threaded connection with an upper infrared distance meter; grooves are symmetrically formed in the top of the inspection seat, column grooves are formed in the inner walls of the grooves, and the inner walls of the column grooves are in threaded connection with lower infrared distance meters. The double-wire-drawing special-shaped die body is arranged on the top of the checking base and arranged on the outer side of the positioning guide column in a sleeving mode. Therefore, the device can quickly and conveniently detect the assembled double-wire-drawing special-shaped mold body, the arc-shaped plate in the double-wire-drawing special-shaped mold body can be completely abutted against the inner wall of the through hole, reworking is not needed, the working efficiency is effectively improved, the split type design facilitates repeated utilization of the detection seat, the production cost is effectively reduced, and the use effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of wire drawing special-shaped dies, in particular to a double-wire drawing self-checking special-shaped die. Background Art

[0002] The traditional wire drawing die is an integrated molding structure with a connected three-way inlet channel, a lubrication channel, a working channel, a sizing channel and an outlet channel. After the wire passes through each drawing channel in turn, it is squeezed and discharged from the other end when passing through the sizing channel to form a wire with the inner diameter of the sizing channel. During the molding process, there is great friction with the inner diameter of the sizing channel, especially for the special-shaped sizing channel of the special-shaped die, which has greater friction on the wire and higher wear efficiency on the sizing channel. After long-term use, the sizing channel is severely worn, so the entire die needs to be discarded and replaced, and the length of the sizing channel designed for wires of different thicknesses needs to be changed accordingly, so it is necessary to design dies with sizing channels of different lengths, resulting in waste of resources, increased production costs, and poor applicability.

[0003] In order to solve the above problems, the patent application document with publication number CN111672919B discloses a double wire drawing special-shaped die. Although the device solves the above problems very well, defects are still found in the actual use process, that is, the splicing blocks are fixed by the cooperation of the clamping nut, the support rod, the connecting rod and the arc plate. When fixing, the clamping nut is rotated. When the clamping nut is pressed onto the splicing block, the support rod of the column is pushed to move axially toward the outside of the through hole through the reaction force. During the movement of the support rod, the connecting rod between the support rod and the arc plate rotates relative to each other, and the angle between the connecting rod and the support rod gradually increases, pushing the arc plate to resist the inner wall of the through hole, thereby propping up the entire through hole cavity, avoiding the gap between the column and the inner wall of the through hole and the gap between the positioning protrusion and the positioning groove, causing the splicing block to be misaligned during the wire drawing extrusion process after the splicing block splicing die, further ensuring the processing accuracy and product quality.

[0004] Among them, the support rod generates axial movement by rotating the clamping nut, and whether the arc plate is completely in contact with the inner wall of the through hole depends on the support rod. The rotating clamping nut is completed manually. The manual operation is greatly affected by human factors (rotation force, number of rotations, and replacement of operators, etc.) and fatigue factors. It is difficult to ensure that the fixed arc plate can completely abut against the inner wall of the through hole. If the arc plate cannot completely abut against the inner wall of the through hole, it is easy to cause misalignment between the channels, which is not convenient for the use of the mold. It needs to be reworked and reassembled later, and the work efficiency is low. Utility Model Content

[0005] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0006] To this end, the purpose of the utility model is to propose a double-wire drawing self-inspection type special-shaped mold, which can quickly and conveniently detect the assembled double-wire drawing special-shaped mold body, ensuring that the arc plate in the double-wire drawing special-shaped mold body can completely abut against the inner wall of the through hole without rework, effectively improving work efficiency and achieving good use effect.

[0007] In order to achieve the above-mentioned purpose, the utility model proposes a double-wire drawing self-inspection type special-shaped mold, comprising an inspection seat and a double-wire drawing special-shaped mold body, wherein the top of the inspection seat is provided with a controller, a marking line, a positioning guide column and a vertical portion in order from left to right along the Y-axis direction, the surface of the vertical portion is symmetrically fixedly connected with a fixing seat, and the surface of the fixing seat is threadedly connected with an upper infrared rangefinder; the top of the inspection seat is symmetrically provided with grooves, and are located on the outside of the positioning guide column, the inner wall of the groove is provided with a column groove, and the inner wall of the column groove is threadedly connected with a lower infrared rangefinder. External rangefinder; the lower infrared rangefinder is coaxially arranged with the upper infrared rangefinder, and the controller is electrically connected to the upper infrared rangefinder and the lower infrared rangefinder respectively; the double-drawn special-shaped mold body is arranged on the top of the inspection seat and is sleeved on the outside of the positioning guide column, one end of the double-drawn special-shaped mold body is aligned with the marking line, and the other end of the double-drawn special-shaped mold body is in contact with the surface of the vertical part; the clamping nut and the support rod in the double-drawn special-shaped mold body are respectively located inside the groove and inside the column groove.

[0008] The utility model discloses a double-wire drawing self-inspection special-shaped die, which can quickly and conveniently detect the assembled double-wire drawing special-shaped die body to ensure that the arc plate in the double-wire drawing special-shaped die body can completely abut against the inner wall of the through hole without rework, effectively improving work efficiency and achieving good use effect.

[0009] In addition, the double-wire drawing self-checking special-shaped die proposed in the application may also have the following additional technical features:

[0010] Specifically, two groups of positioning guide pillars are provided, and the two groups of positioning guide pillars respectively correspond to the positions of the two groups of main channels in the double-drawing special-shaped mold body, and the two groups of positioning guide pillars are respectively located inside the two groups of main channels and are slidably connected to the inner walls of the two groups of main channels.

[0011] Specifically, the positioning guide column includes a threaded base, a first gas expansion seat, a second gas expansion seat, a third gas expansion seat, a sizing cylinder seat and a fourth gas expansion seat, wherein the threaded base is threadedly connected to the top of the inspection seat and is at the same horizontal plane as the top of the inspection seat; the first gas expansion seat, the second gas expansion seat, the third gas expansion seat, the sizing cylinder seat and the fourth gas expansion seat are arranged on the top of the threaded base in sequence from top to bottom, and the first gas expansion seat, the second gas expansion seat, the third gas expansion seat, the sizing cylinder seat and the fourth gas expansion seat are respectively adapted to the internal dimensions of the three-way inlet channel, the lubrication channel, the working channel, the sizing channel and the outlet channel in the main channel; an air guide tube is arranged inside the threaded base, one end of the air guide tube passes through the outside of the inspection seat and is connected to one end of the external gas transmission pipeline, and the other end of the air guide tube is respectively connected to the first gas expansion seat, the second gas expansion seat, the third gas expansion seat and the fourth gas expansion seat; an electromagnetic valve is arranged on the air guide tube and is electrically connected to the controller.

[0012] Specifically, five groups of positioning tubes are symmetrically arranged on the top of the threaded base, and the heights of the five groups of positioning tubes gradually increase in a clockwise direction; column holes are respectively opened on the surface of the first air expansion seat, the surface of the second air expansion seat, the surface of the third air expansion seat, the surface of the sizing cylinder seat and the surface of the fourth air expansion seat at positions corresponding to the positions of the positioning tubes, and one end of the positioning tube is slidably connected to the inner wall of the column hole and is fixedly connected to the inner wall of the column hole by a fixing nut.

[0013] Specifically, the slide grooves on the first air expansion seat, the second air expansion seat, the third air expansion seat and the fourth air expansion seat are distributed in a spiral shape from bottom to top, and one end of the tightening block slidably connected to the inner wall of the slide groove is respectively adapted to the internal dimensions of the three-way inlet channel, lubrication channel, working channel, sizing channel and outlet channel in the main channel.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0016] Figure 1 This is a schematic diagram of the structure of a double-wire drawing self-checking special-shaped die of the utility model;

[0017] Figure 2 This is a schematic diagram of the groove structure in a double-wire drawing self-checking special-shaped die of the utility model;

[0018] Figure 3This is a schematic diagram of the structure of a lower infrared rangefinder in a double-wire drawing self-detection special-shaped die of the utility model;

[0019] Figure 4 This is a schematic diagram of the positioning guide column structure in a double wire drawing self-checking special-shaped die of the utility model;

[0020] Figure 5 The utility model is a schematic diagram of the positioning tube structure in a double-wire drawing self-checking special-shaped die.

[0021] As shown in the figure:

[0022] 1. Inspection seat; 2. Controller; 3. Alignment line; 4. Positioning guide column; 5. Vertical part; 6. Fixed seat; 10. Upper infrared rangefinder; 7. Groove; 8. Column groove; 9. Lower infrared rangefinder;

[0023] 100. Double-drawn special-shaped die body; 101. Compression nut; 102. Support rod;

[0024] 41. Threaded base; 42. First gas expansion seat; 43. Second gas expansion seat; 44. Third gas expansion seat; 45. Sizing cylinder seat; 46. Fourth gas expansion seat; 47. Slide; 48. Tightening block;

[0025] 411. air guide tube; 412. positioning tube; 413. column hole; 414. fixing nut. DETAILED DESCRIPTION

[0026] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limitations on the present invention. On the contrary, the embodiments of the present invention include all changes, modifications, and equivalents that fall within the spirit and connotation of the appended claims.

[0027] A double-wire drawing self-checking special-shaped die according to an embodiment of the utility model will be described below in conjunction with the accompanying drawings.

[0028] like Figure 1-Figure 5As shown, a double-wire drawing self-inspection type special-shaped mold according to an embodiment of the utility model comprises an inspection seat 1 and a double-wire drawing special-shaped mold body 100, wherein a controller 2, a marking line 3, a positioning guide column 4 and a vertical portion 5 are sequentially arranged on the top of the inspection seat 1 along the Y-axis direction from left to right, a fixing seat 6 is symmetrically fixedly connected to the surface of the vertical portion 5, and an upper infrared rangefinder 10 is threadedly connected to the surface of the fixing seat 6; a groove 7 is symmetrically opened on the top of the inspection seat 1 and is located on the outside of the positioning guide column 4, a column groove 8 is opened on the inner wall of the groove 7, and a lower infrared rangefinder 10 is threadedly connected to the inner wall of the column groove 8 External rangefinder 9; the lower infrared rangefinder 9 is coaxially arranged with the upper infrared rangefinder 10, and the controller 2 is electrically connected to the upper infrared rangefinder 10 and the lower infrared rangefinder 9 respectively; the double-drawn special-shaped mold body 100 is arranged on the top of the inspection seat 1, and is sleeved on the outside of the positioning guide column 4, one end of the double-drawn special-shaped mold body 100 is aligned with the marking line 3, and the other end of the double-drawn special-shaped mold body 100 is in contact with the surface of the vertical part 5; the clamping nut 101 and the support rod 102 in the double-drawn special-shaped mold body 100 are respectively located inside the groove 7 and inside the column groove 8.

[0029] It should be noted that the controller 2 described in this embodiment is electrically connected to an external power supply, and the data detected by the lower infrared rangefinder 9 and the upper infrared rangefinder 10 are directly displayed on the display screen in the controller 2, wherein the controller 2, the lower infrared rangefinder 9 and the upper infrared rangefinder 10 are all prior arts, and therefore will not be described in detail here.

[0030] It should also be noted that two ranging probes are provided on the lower infrared rangefinder 9 and the upper infrared rangefinder 10, one group is used to measure the height difference between the support rod 102 and the ranging probe, and the other group is used to measure the height difference between the clamping nut 101 and the ranging probe. By comparing the two groups of height differences, the height dimension of the support rod 102 protruding from the clamping nut 101 is obtained.

[0031] Specifically, after the double-drawn special-shaped mold body 100 is assembled, one end of the double-drawn special-shaped mold body 100 is first abutted against the surface of the vertical portion 5, and then the main channel at the bottom of the double-drawn special-shaped mold body 100 is aligned with the positioning guide column 4. After alignment, the double-drawn special-shaped mold body 100 is lowered along the surface of the vertical portion 5. During the lowering process, if there is no misalignment between the channels in the main channel, the double-drawn special-shaped mold body 100 will smoothly fall on the top of the inspection seat 1 and be mounted on the outside of the positioning guide column 4. If there is a misalignment between the channels in the main channel, it will be hindered during the falling process and cannot fall on the top of the inspection seat 1.

[0032] If the double-drawn special-shaped die body 100 falls directly and smoothly on the top of the inspection seat 1, then correspondingly, one end of the double-drawn special-shaped die body 100 should be aligned with the marking line 3.

[0033] If it is aligned with the marking line 3, it is necessary to check whether the arc plate is completely in contact with the inner wall of the through hole. During the inspection, the lower infrared rangefinder 9 and the upper infrared rangefinder 10 are respectively turned on by the controller 2. The lower infrared rangefinder 9 is used to detect the height difference between the support rod 102 at the bottom of the double-drawn special-shaped mold body 100 and the clamping nut 101. The upper infrared rangefinder 10 is used to detect the height difference between the support rod 102 at the top of the double-drawn special-shaped mold body 100 and the clamping nut 101. The height is fixed, so when the arc plate can completely abut against the inner wall of the through hole, the height dimension of the support rod 102 protruding from the outside of the clamping nut 101 is also fixed accordingly, and the height of the support rod 102 protruding from the outside of the clamping nut 101 is detected to determine whether the arc plate is completely abutted against the inner wall of the through hole. If the sum of the two sets of height differences detected is consistent with the set value, it indicates complete abutment. If there is a data difference, it indicates incomplete abutment. The channels of the double-drawn special-shaped mold body 100 may be misaligned during subsequent use, and rework and reassembly will be required later.

[0034] If the double-drawn special-shaped mold body 100 cannot fall directly on the top of the inspection seat 1, it is necessary to first remove the clamping nut 101 at the bottom of the double-drawn special-shaped mold body 100, and then turn over the entire double-drawn special-shaped mold body 100, and then put the double-drawn special-shaped mold body 100 on the outside of the positioning guide column 4 and abut against the surface of the vertical portion 5. Since the clamping nut 101 at the bottom is removed, the splicing block is in an adjustable state at this time, and then the positioning guide column 4 is controlled by the controller 2 to ventilate and operate, and the positioning guide column 4 is After the operation of the multiple groups of air expansion seats, they respectively abut against the inner walls of each channel and adjust the positions. After the adjustment, each channel is on the same axis, and then the clamping nut 101 is installed. During the installation process, the lower infrared rangefinder 9 and the upper infrared rangefinder 10 are opened respectively through the controller 2, and the height difference between the clamping nut 101 and the support rod 102 is detected. When the total height difference is at the set value, it means that the arc plate is completely abutted against the inner wall of the through hole. At this time, the double-drawn special-shaped mold body 100 can be removed.

[0035] The device can quickly and conveniently detect the assembled double-drawn special-shaped die body 100, ensuring that the arc plate in the double-drawn special-shaped die body 100 can completely abut against the inner wall of the through hole without rework, effectively improving work efficiency and achieving good use effect.

[0036] In one embodiment of the present invention, Figure 2 As shown, two groups of positioning guide pillars 4 are provided, and the two groups of positioning guide pillars 4 respectively correspond to the positions of the two groups of main channels in the double-drawing special-shaped die body 100, and the two groups of positioning guide pillars 4 are respectively located inside the two groups of main channels and are slidably connected to the inner walls of the two groups of main channels.

[0037] Specifically, the two groups of positioning guide pillars 4 cooperate with the two groups of main channels to facilitate rapid positioning of the double-wire drawing special-shaped die body 100, which is easy to operate and has a good use effect.

[0038] In one embodiment of the present invention, Figure 4 As shown, the positioning guide column 4 includes a threaded base 41, a first gas expansion seat 42, a second gas expansion seat 43, a third gas expansion seat 44, a sizing cylinder seat 45 and a fourth gas expansion seat 46, wherein the threaded base 41 is threadedly connected to the top of the inspection seat 1 and is in the same horizontal plane as the top of the inspection seat 1; the first gas expansion seat 42, the second gas expansion seat 43, the third gas expansion seat 44, the sizing cylinder seat 45 and the fourth gas expansion seat 46 are sequentially arranged on the top of the threaded base 41 from top to bottom, and the first gas expansion seat 42, the second gas expansion seat 43, the third gas expansion seat 44, the sizing cylinder seat 45 and the fourth gas expansion seat 46 are sequentially arranged on the top of the threaded base 41 from top to bottom. 5 and the fourth air expansion seat 46 are respectively adapted to the internal dimensions of the three-way inlet channel, lubrication channel, working channel, sizing channel and outlet channel in the main channel; an air guide tube 411 is arranged inside the threaded base 41, one end of the air guide tube 411 passes through the outside of the inspection seat 1 and is connected to one end of the external gas pipeline, and the other end of the air guide tube 411 is respectively connected to the first air expansion seat 42, the second air expansion seat 43, the third air expansion seat 44 and the fourth air expansion seat 46; an electromagnetic valve (not shown in the figure) is arranged on the air guide tube 411 and is electrically connected to the controller 2.

[0039] It should be noted that the outer diameters of the first air expansion seat 42, the second air expansion seat 43, the third air expansion seat 44, the sizing cylinder seat 45 and the fourth air expansion seat 46 described in this embodiment are consistent. When the expansion block 48 is extended, the outer diameters of the first air expansion seat 42, the second air expansion seat 43, the third air expansion seat 44 and the fourth air expansion seat 46 are all larger than the outer diameter of the sizing cylinder seat 45.

[0040] It should also be noted that the threaded base 41 , the first gas expansion seat 42 , the second gas expansion seat 43 , the third gas expansion seat 44 , the sizing cylinder seat 45 and the fourth gas expansion seat 46 are arranged on a coaxial center line.

[0041] Specifically, the controller 2 controls the solenoid valve to open. When the solenoid valve opens, the compressed air inside the external gas pipeline enters the air duct 411, and then enters the first air expansion seat 42, the second air expansion seat 43, the third air expansion seat 44 and the fourth air expansion seat 46 from the air duct 411, and triggers the expansion blocks 48 on the first air expansion seat 42, the second air expansion seat 43, the third air expansion seat 44 and the fourth air expansion seat 46 to extend, thereby abutting against the inner walls of each channel, adjusting the position of the splicing blocks to ensure that each channel is on the same axis.

[0042] In one embodiment of the present invention, Figure 5As shown, five groups of positioning tubes 412 are symmetrically arranged on the top of the threaded base 41, and the heights of the five groups of positioning tubes 412 gradually increase in a clockwise direction; column holes 413 are respectively opened on the surfaces of the first gas expansion seat 42, the second gas expansion seat 43, the third gas expansion seat 44, the sizing cylinder seat 45 and the fourth gas expansion seat 46 at the positions corresponding to the positions of the positioning tubes 412, and one end of the positioning tube 412 is slidably connected to the inner wall of the column hole 413, and is fixedly connected to the inner wall of the column hole 413 by a fixing nut 414.

[0043] It should be noted that the fixing nut 414 described in this embodiment is threadedly connected to the top of the positioning tube 412 .

[0044] Specifically, the fourth air expansion seat 46 is sleeved on the shortest group of positioning tubes 412 and then fixed by the fixing nut 414, and then the sizing cylinder seat 45 is sleeved on the second shortest group of positioning tubes 412 and then fixed by the fixing nut 414, and this is repeated until the first air expansion seat 42 is sleeved on the highest group of positioning tubes 412 and fixed by the fixing nut 414. The positioning tube 412 is used to limit and fix the first air expansion seat 42, the second air expansion seat 43, the third air expansion seat 44, the sizing cylinder seat 45 and the fourth air expansion seat 46 to improve their structural stability. Among them, the first air expansion seat 42, the second air expansion seat 43, the third air expansion seat 44, the sizing cylinder seat 45 and the fourth air expansion seat 46 are detachable for easy replacement and use.

[0045] In one embodiment of the present invention, Figure 4 As shown, the slide grooves 47 on the first air expansion seat 42, the second air expansion seat 43, the third air expansion seat 44 and the fourth air expansion seat 46 are distributed in a spiral shape from bottom to top, and one end of the tightening block 48 slidably connected to the inner wall of the slide groove 47 is respectively adapted to the internal dimensions of the three-way inlet channel, the lubrication channel, the working channel, the sizing channel and the outlet channel in the main channel.

[0046] Specifically, the slide groove 47 is distributed in a spiral shape from bottom to top to facilitate the staggered positioning tube 412, and the expansion block 48 is respectively adapted to the internal dimensions of the three-way inlet channel, lubrication channel, working channel, sizing channel and outlet channel in the main channel, so that it can completely abut against the inner wall of each channel to improve the positioning accuracy.

[0047] In summary, a double-wire drawing self-inspection type special-shaped mold in an embodiment of the utility model can quickly and conveniently detect the assembled double-wire drawing special-shaped mold body 100, ensuring that the arc plate in the double-wire drawing special-shaped mold body 100 can be completely abutted against the inner wall of the through hole without rework, effectively improving work efficiency and achieving good use effect.

[0048] The split design of the inspection seat 1 and the double-drawn special-shaped die body 100 facilitates the reuse of the inspection seat 1 and effectively reduces production costs.

[0049] In addition, the marking line 3, positioning guide column 4 and vertical part 5 in the device can effectively position the splicing blocks in the double-drawing special-shaped die body 100 during the assembly project of the double-drawing special-shaped die body 100, which is easy to operate and improves its assembly efficiency, and has a good use effect.

[0050] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0051] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0052] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and deform the above embodiments within the scope of the present invention.

Claims

1. A double wire drawing self-checking special-shaped die, characterized in that: It comprises an inspection seat (1) and a double-drawing special-shaped die body (100), wherein: The top of the inspection seat (1) is provided with a controller (2), a marking line (3), a positioning guide column (4) and a vertical portion (5) in order from left to right along the Y-axis direction; a fixing seat (6) is symmetrically fixedly connected to the surface of the vertical portion (5); and an upper infrared rangefinder (10) is threadedly connected to the surface of the fixing seat (6); The inspection seat (1) has a groove (7) symmetrically formed on the top thereof and located outside the positioning guide column (4); the inner wall of the groove (7) has a column groove (8) formed thereon, and the inner wall of the column groove (8) is threadedly connected to a lower infrared rangefinder (9); The lower infrared rangefinder (9) and the upper infrared rangefinder (10) are arranged coaxially, and the controller (2) is electrically connected to the upper infrared rangefinder (10) and the lower infrared rangefinder (9) respectively; The double-wire drawing special-shaped die body (100) is arranged on the top of the inspection seat (1) and sleeved on the outside of the positioning guide column (4); one end of the double-wire drawing special-shaped die body (100) is aligned with the alignment line (3), and the other end of the double-wire drawing special-shaped die body (100) is in contact with the surface of the vertical part (5); The clamping nut (101) and the support rod (102) in the double-wire drawing special-shaped die body (100) are located inside the groove (7) and inside the column groove (8), respectively.

2. The double-wire drawing self-checking special-shaped die according to claim 1, characterized in that: The positioning guide pillars (4) are provided in two groups, and the two groups of positioning guide pillars (4) respectively correspond to the positions of the two groups of main channels in the double-drawing special-shaped die body (100), and the two groups of positioning guide pillars (4) are respectively located inside the two groups of channels and are slidably connected to the inner walls of the two groups of main channels.

3. The double wire drawing self-checking special-shaped die according to claim 1, characterized in that: The positioning guide column (4) comprises a threaded base (41), a first gas expansion seat (42), a second gas expansion seat (43), a third gas expansion seat (44), a sizing cylinder seat (45) and a fourth gas expansion seat (46), wherein: The threaded base (41) is threadedly connected to the top of the inspection base (1) and is located at the same horizontal plane as the top of the inspection base (1); The first gas expansion seat (42), the second gas expansion seat (43), the third gas expansion seat (44), the sizing cylinder seat (45) and the fourth gas expansion seat (46) are arranged in order from top to bottom on the top of the threaded base (41), and the first gas expansion seat (42), the second gas expansion seat (43), the third gas expansion seat (44), the sizing cylinder seat (45) and the fourth gas expansion seat (46) are respectively adapted to the internal dimensions of the three-way inlet channel, the lubrication channel, the working channel, the sizing channel and the outlet channel in the main channel; An air guide tube (411) is provided inside the threaded base (41), one end of the air guide tube (411) passes through the outside of the inspection base (1) and is connected to one end of an external air pipeline, and the other end of the air guide tube (411) is respectively connected to the first air expansion seat (42), the second air expansion seat (43), the third air expansion seat (44) and the fourth air expansion seat (46); The air guide pipe (411) is provided with a solenoid valve, and is electrically connected to the controller (2).

4. The double wire drawing self-checking special-shaped die according to claim 3, characterized in that: Five groups of positioning tubes (412) are symmetrically arranged on the top of the threaded base (41), and the heights of the five groups of positioning tubes (412) gradually increase in a clockwise direction; Column holes (413) are respectively provided on the surfaces of the first gas expansion seat (42), the second gas expansion seat (43), the third gas expansion seat (44), the sizing cylinder seat (45) and the fourth gas expansion seat (46) at positions corresponding to the positions of the positioning tube (412); one end of the positioning tube (412) is slidably connected to the inner wall of the column hole (413) and is fixedly connected to the inner wall of the column hole (413) via a fixing nut (414).

5. The double-wire drawing self-checking special-shaped die according to claim 3, characterized in that: The slide grooves (47) on the first gas expansion seat (42), the second gas expansion seat (43), the third gas expansion seat (44) and the fourth gas expansion seat (46) are distributed in a spiral shape from bottom to top, and one end of the expansion block (48) slidably connected to the inner wall of the slide groove (47) is respectively adapted to the internal dimensions of the three-way inlet channel, the lubrication channel, the working channel, the sizing channel and the outlet channel in the main channel.

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