A micro-particle liquid columnar jet forming device for polishing a wire drawing hole

Abstract

The application discloses a kind of for drawing hole polishing microgranule liquid columnar jet formation device, including with jet nozzle one pressure liquid supply channel one and with jet nozzle two pressure liquid supply channel two, the jet nozzle one and jet nozzle two respectively with jet hole one and jet hole two, the pressure liquid supply channel one and pressure liquid supply channel two can form negative pressure with absolute value greater than positive pressure when one side forms positive pressure, the jet nozzle one and jet nozzle two can be with the two ends of drawing die respectively with pressure mode and butt joint, make jet hole one, drawing hole, jet hole two form the linear flow channel of temporary communication, and jet hole one and jet hole two can be under the action of positive pressure and be injected columnar jet to drawing hole, can be under the action of negative pressure and be inhaled columnar jet from drawing hole.

Description

Technical Field

[0001] This invention relates to a microparticle liquid columnar jet forming device for grinding wire drawing holes, belonging to the field of wire drawing die processing technology. Background Technology

[0002] Wire drawing dies are used to draw or extrude metal wire products that meet specifications and shapes. The smoothness of the drawing hole directly affects the pass rate of the metal wire products. Generally, the diameter of the drawing hole in a wire drawing die is very small, only 4-6mm, and the length of the hole is about 15-20mm. The processing technology usually involves first pressing a drawing hole slightly smaller than the specified specification onto the wire drawing die, and then grinding the round hole. Because the diameter of the drawing hole is too small, it is very easy for the mandrel to break and block the hole when using the mandrel insertion method. Currently, micro-beam laser grinding is generally used, but the operation precision requirements are too high. Even a slight deviation will cause the inner wall shape of the drawing hole to change and exceed the specified inner diameter, thus rendering the entire wire drawing die unusable.

[0003] To address the aforementioned issues, our company has invented a grinding and polishing method for the drawing hole of a wire drawing die. A key problem addressed by this method is that a non-sealed flow channel must be used to form a columnar jet of microparticle liquid under pressure, without allowing leakage of the microparticle liquid. This non-sealed flow channel consists of a section temporarily constructed by pressing together a jet flow channel, a return flow channel, and the drawing hole of the wire drawing die. The drawing hole of the wire drawing die is located between the jet flow channel and the return flow channel. Under operating conditions, the wire drawing die needs to rotate at high speed around the axis of the drawing hole. Therefore, it is impossible to achieve a fixed seal between the drawing hole and the jet flow channel, as well as between the drawing hole and the return flow channel. Summary of the Invention

[0004] The technical problem to be solved by this invention is: how to form a columnar jet of microparticle liquid under pressure in a flow channel that cannot be fixed and sealed, and to ensure that the microparticle liquid does not leak in this flow channel.

[0005] To address the above problems, the technical solution proposed by this invention is as follows:

[0006] A microparticle liquid columnar jet forming device for grinding wire drawing holes includes a pressure supply channel one with a jet nozzle one and a pressure supply channel two with a jet nozzle two. The jet nozzle one and jet nozzle two respectively have a jet hole one and a jet hole two. The pressure supply channel one and pressure supply channel two can form a negative pressure with an absolute value greater than the positive pressure when one of them forms a positive pressure. The jet nozzle one and jet nozzle two can be connected to both ends of the wire drawing die in a pressing manner, so that the jet hole one, the wire drawing hole and the jet hole two form a temporarily connected straight flow channel. Both jet hole one and jet hole two can spray columnar jets into the wire drawing hole under positive pressure and can draw columnar jets into the wire drawing hole under negative pressure.

[0007] The first pressure supply channel includes a pressure vessel and a pressure infusion pipe connected to the pressure vessel at one end and a jet nozzle at the other end. The second pressure supply channel includes a pressure vessel and a pressure infusion pipe connected to the pressure vessel at one end and a jet nozzle at the other end.

[0008] The diameters of the jet hole one and jet hole two are equal to the diameter of the wire drawing hole.

[0009] The jet nozzle one and jet nozzle two are cone-shaped bodies made of wear-resistant material with an outer conical surface.

[0010] The upper and lower spaces of pressure vessel one are respectively a pneumatic cavity one and a liquid storage space one for storing particulate liquid, and the upper and lower spaces of pressure vessel two are respectively a pneumatic cavity two and a liquid storage space two for storing particulate liquid.

[0011] A forward air passage and a reverse air passage are provided between the first and second pressure chambers, and the forward air passage and the reverse air passage are respectively equipped with a forward air pressure pump and a reverse air pressure pump.

[0012] Pressure vessel one and pressure vessel two are respectively provided with atmospheric pressure vent pipes that connect the outside world to pressure cavity one and pressure cavity two, and atmospheric pressure switches that can be closed under working conditions are provided on the atmospheric pressure vent pipes.

[0013] A dual-pressure regulator is installed on pressure vessel one and pressure vessel two to maintain negative pressure and reduce positive pressure. The dual-pressure regulator includes a rigid inner liner with vent holes and an elastic expansion sleeve fitted outside the inner liner. Vent hole one and vent hole two are respectively provided on the top of pressure vessel one and pressure vessel two, respectively. Vent hole one and vent hole two communicate with air pressure cavity one and air pressure cavity two, respectively. The opening of the expansion sleeve on pressure vessel one and the opening of the expansion sleeve on pressure vessel two are respectively sealed and bonded to the edge of the opening of vent hole one and vent hole two. When positive pressure is formed in the cavity of the expansion sleeve, the expansion sleeve is expanded. When negative pressure is formed in the cavity of the expansion sleeve, the expansion sleeve is contracted and restricted by the inner liner.

[0014] Air valve 1 and air valve 2 are installed on pressure infusion line 1 and pressure infusion line 2 respectively. When the columnar jet injection begins, the air valve on the negative pressure side opens first, and the air valve on the positive pressure side opens later.

[0015] A connecting pipe 1 is installed between pressure infusion tube 1 and jet nozzle 1, and a connecting pipe 2 is installed between pressure infusion tube 2 and jet nozzle 2. A stop flange 1 and a stop flange 2 with threaded engagement and adjustable position are respectively installed on the outer periphery of connecting pipe 1 and connecting pipe 2. A compression spring 1 and a compression spring 2 are respectively fitted on the outer periphery of connecting pipe 1 between stop flange 1 and pressure infusion tube 1, and on the outer periphery of connecting pipe 2 between stop flange 2 and pressure infusion tube 2. The compression spring 1 and the compression spring 2, in cooperation with the clamp, tightly press jet nozzle 1 and jet nozzle 2 against both ends of the wire drawing die.

[0016] Beneficial effects:

[0017] It can form a stable and complete columnar jet in the drawing hole, and when the drawing die rotates, it can prevent the high-pressure microparticle liquid in the section of the flow channel from the first jet hole through the drawing hole to the second jet hole from the first jet hole through the drawing hole from the second jet hole from the first jet ... Attached Figure Description

[0018] Figure 1 This is a cross-sectional schematic diagram of the forming device. The diagram shows that air valve one and air valve two are not open, neither the forward air pump nor the reverse air pump is open, and the air pressure in air pressure cavity one and air pressure cavity two is at atmospheric pressure.

[0019] Figure 2 This is a schematic diagram of the assembly of the fixture and the forming device, in which the wire drawing die has been clamped.

[0020] Figure 3 A cross-sectional schematic diagram of the tapered hole at one end of the jet nozzle and the wire drawing hole that mates with the jet hole.

[0021] Figure 4 for Figure 2 A partial schematic diagram shows the assembly relationship between jet nozzle one, jet nozzle two and wire drawing die;

[0022] Figure 5 for Figure 1 A partial structural diagram;

[0023] Figure 6 This is a cross-sectional schematic diagram showing the assembly relationship and working principle of the forming device and fixture of the wire drawing die under the grinding condition. The diagram shows that one side of the pressure vessel is under positive pressure and a columnar jet is sprayed from the jet nozzle. Arrow A in the diagram indicates the flow direction of the microparticle liquid, arrow B indicates the rotation direction of the wire drawing die, arrow C indicates the positive pressure direction of the air pressure, and arrow D indicates the negative pressure direction of the air pressure. The following arrows are all the same.

[0024] Figure 7 for Figure 6 A partial schematic diagram shows the working conditions of the dual pressure regulator installed on pressure vessel one and the dual pressure regulator installed on pressure vessel two.

[0025] Figure 8 for Figure 6 A partial schematic diagram shows a jet nozzle 1 spraying a columnar jet, which is then drawn in by a jet nozzle 2.

[0026] Figure 9 This is a cross-sectional schematic diagram showing the assembly relationship and working principle of the forming device and fixture in the grinding condition of the wire drawing die. The diagram shows that one side of the pressure vessel is under positive pressure and a columnar jet is ejected from the jet nozzle.

[0027] Figure 10 This is a cross-sectional schematic diagram of the fixture.

[0028] In the diagram: 1. Pressure supply channel one; 11. Pressure vessel one; 111. Pneumatic cavity one; 112. Vent one; 12. Pressure delivery pipe one; 121. Connecting pipe one; 122. Stop flange one; 123. Air valve one; 13. Jet nozzle one; 131. Jet orifice one; 2. Pressure supply channel two; 21. Pressure vessel two; 211. Pneumatic cavity two; 212. Vent two; 22. Pressure delivery pipe two; 221. Connecting pipe two; 222. Stop flange two; 223. Air valve two; 23. Jet nozzle two; 231. Jet orifice two; 3. Reverse air channel; 31. Reverse air pressure 4. Pump; 5. Return air passage; 6. Return air pump; 7. Atmospheric pressure vent pipe; 8. Atmospheric pressure switch; 9. Dual pressure regulator; 10. Inner liner; 11. Vent hole; 12. Expansion sleeve; 13. Microparticle liquid; 14. Columnar jet; 15. Fixture; 16. Support 1; 17. Support 2; 18. Rotor; 19. Gutter; 20. Tubular shaft 1; 21. Tubular shaft 2; 22. Pressure clamp 1; 33. Pressure clamp 2; 44. Compression spring 1; 55. Compression spring 2; 66. Motor; 77. Gear; 88. Wire drawing die; 99. Wire drawing hole; 100. Inner conical surface; 11. Outer conical surface. Detailed Implementation

[0029] To facilitate the description and understanding of this device, the general inventive concept of this application is first explained and a fixture that can be applied to the device for which protection is sought in this application is provided.

[0030] like Figure 6 , 8 As shown, the general inventive concept of this application is: to form a columnar jet 71 containing hard microparticles into a microparticle liquid under pressure and pass through a drawing hole, so that the outer peripheral surface of the columnar jet 71 forms axial friction with the inner wall of the drawing hole 90 when passing through the drawing hole 90, and at the same time, to make the inner wall of the drawing hole 90 rotate on the outer peripheral surface of the columnar jet 71, so that the outer peripheral surface of the columnar jet 71 forms circumferential friction with the inner wall of the drawing hole 90.

[0031] like Figure 10 As shown, a clamp applicable to the protection device claimed in this application has a rotor 83 driven by a motor 88. A semi-annular groove 830 is provided on the rotor 83 to clamp a wire drawing die 9. A tubular shaft 831 and a tubular shaft 832, each with a through hole, are respectively provided at both ends of the rotor 83. The through holes 831 and 832 have the same axis as the wire drawing hole 90 of the clamped wire drawing die 9. The rotor 83 rotates around the axis of the wire drawing hole 90. The through holes 83 and 832 are provided so that the component forming the columnar jet 71 can extend into and approach both ends of the wire drawing hole 90.

[0032] The clamp 8 also has a first support 81 and a second support 82 fixed on the base. The rotor 83 is rotatably mounted on the first support 81 and the second support 82 via the first tubular shaft 831 and the second tubular shaft 832. A gear 89 is provided on the first support 81 or the second support 82 to drive the rotor 83 to rotate. The motor 88 establishes a driving relationship with the rotor 83 through the gear 89.

[0033] The clamp 8 also has a pressure seat 1 84 and a pressure seat 2 85 at its left and right ends, respectively. The pressure seat 1 84 and the pressure seat 2 85 have a guide hole 1 and a guide hole 2, respectively. The guide hole 1 and the guide hole 2 are coaxial with the through hole 1 and the through hole 2.

[0034] It should be noted that the fixture 8 provided herein is only for illustrating that the device for which protection is sought can be implemented and applied normally, and is not the only tool that can be applied to the device for which protection is sought. Therefore, the implementation and application of the device for which protection is sought is not limited to the fixture 8 provided herein.

[0035] The present invention will be further described below with reference to embodiments and accompanying drawings:

[0036] like Figure 1 , 2As shown in Figures 6, 8, and 9, a microparticle liquid columnar jet forming device for grinding wire drawing holes includes a pressure supply channel 1 with a jet nozzle 13 and a pressure supply channel 2 with a jet nozzle 23. The jet nozzle 13 and the jet nozzle 23 respectively have jet holes 131 and 231. The pressure supply channel 1 and the pressure supply channel 2 can form a negative pressure with an absolute value greater than the positive pressure when one of them forms a positive pressure. The jet nozzle 13 and the jet nozzle 23 can be connected to both ends of the wire drawing die 9 by pressing, so that the jet hole 131, the wire drawing hole 90, and the jet hole 231 form a temporarily connected straight channel. Both the jet hole 131 and the jet hole 231 can spray columnar jet 71 into the wire drawing hole 90 under positive pressure and can draw columnar jet 71 from the wire drawing hole 90 under negative pressure. In application, nozzle 13 and nozzle 23 are pressed together at both ends of the drawing die 9, so that nozzle 131 and nozzle 231 are temporarily connected to the drawing hole 90 at both ends to form a straight flow channel with the same axis. The drawing die rotates around the axis of the drawing hole 90 with the rotor 83 of the fixture 8. Nozzle 131 and nozzle 231 alternately spray into the drawing hole 90, so that nozzle 131 is in the pressure supply channel. Under the positive pressure formed within the first channel 1, a columnar jet 71 is ejected. Under the negative pressure formed within the second pressure supply channel 2 through the second jet hole 231, the columnar jet 71 is drawn into the second pressure supply channel 2. Meanwhile, under the positive pressure formed within the second pressure supply channel 2 through the second jet hole 231, the columnar jet 71 is ejected. Under the negative pressure formed within the first pressure supply channel 1 through the first jet hole 131, the columnar jet 71 is drawn into the first pressure supply channel 1. Thus, regardless of the direction of the ejected columnar jet 71, it is ejected under the combined action of positive and negative pressure. In particular, the negative pressure, with an absolute value greater than the positive pressure, reduces the resistance of the positive pressure ejection and helps to stably maintain the columnar shape of the columnar jet 71, preventing it from dispersing under internal pressure and weakening the scouring force. It also prevents leakage of the microparticle liquid in cases where the first and second jet holes 131 and 231 are not tightly pressed against the ends of the drawing hole 90. Here, because the drawing die 9 needs to rotate at high speed (causing circumferential friction between the outer circumferential surface of the columnar jet 71 and the inner wall of the drawing hole 90), the jet nozzle 13 and jet nozzle 23 can only be connected to the two ends of the drawing die 9 by pressing. In this way, in a section of the flow channel that cannot be fixed and sealed, a relatively complete columnar jet of microparticle liquid is formed under the action of positive and negative pressure, and it can ensure that the microparticle liquid does not leak in this section of the flow channel.

[0037] Alternating jetting from jet hole 131 and jet hole 231 helps to ensure the consistency and thoroughness of grinding at both ends of the wire drawing hole 90.

[0038] The diameters of jet orifice 131 and jet orifice 231 are equal to the diameter of drawing orifice 90. This ensures both sufficient flow velocity and adequate contact between their outer circumferential surfaces and the inner wall of drawing orifice 90.

[0039] like Figure 2 , 3 As shown in Figure 4, nozzle 13 and nozzle 23 are conical bodies made of wear-resistant material with an outer conical surface 101. Correspondingly, both ends of the wire drawing hole 90 are also conical holes with an inner conical surface 901. The inner conical surface 901 of the wire drawing hole 90 has the same taper as the inner conical surface of nozzle 131 and nozzle 231, so that they can fit tightly during pressing and can also rotate relative to each other. The wear-resistant material mentioned here can be a metal-based sulfide or fluoride self-lubricating wear-resistant material.

[0040] like Figure 2 , 10 As shown, a connecting pipe 121 is provided between the pressure infusion tube 12 and the jet nozzle 13, and a connecting pipe 221 is provided between the pressure infusion tube 22 and the jet nozzle 23. A stop flange 122 and a stop flange 222, which are threaded and adjustable in position, are respectively provided on the outer periphery of the connecting pipe 121 and the connecting pipe 221. A compression spring 86 and a compression spring 87 are respectively fitted on the outer periphery of the connecting pipe 121 between the stop flange 122 and the pressure infusion tube 12, and on the outer periphery of the connecting pipe 221 between the stop flange 222 and the pressure infusion tube 22. The compression springs 86 and 87, in conjunction with the clamp 8, tightly press the jet nozzle 13 and the jet nozzle 23 against both ends of the drawing die 9.

[0041] like Figure 2 , 4 The diagram shows the situation where jet nozzle 13 and jet nozzle 23 are pressed against the inner conical surfaces 901 of the tapered holes at both ends of the drawing hole 90 using the aforementioned clamp 8. Specifically, the stop flange 122 and stop flange 222 are screwed into the rotor's clamping groove 830 on the connecting pipe 121 and connecting pipe 221, respectively. Then, jet nozzle 13 and jet nozzle 23 are pulled out of the clamping groove 830 of the rotor 83 in opposite directions. The drawing die 9 is placed into the clamping groove 830 and pressed into the clamping groove 830 by screwing in the bolt pin. Finally, stop flange 122 and stop flange 222 are rotated on the connecting pipe 121 and connecting pipe 221, respectively, so that jet nozzle 13 and jet nozzle 23 extend into the tapered holes at both ends of the drawing hole 90 of the drawing die 9, and the inner conical surface 901 is pressed against the outer conical surface 101.

[0042] Pressure infusion tubing 12 and pressure infusion tubing 22 are flexible hoses.

[0043] like Figure 1 , 5As shown, pressure supply channel 1 includes a pressure vessel 11 and a pressure infusion pipe 12 connected at one end to the pressure vessel 11 and at the other end to the jet nozzle 13. Pressure supply channel 2 includes a pressure vessel 21 and a pressure infusion pipe 22 connected at one end to the pressure vessel 21 and at the other end to the jet nozzle 23. Both pressure vessel 11 and pressure vessel 21 are used to generate pressure and contain the particulate liquid 7.

[0044] The upper and lower spaces of pressure vessel 11 are respectively a pneumatic cavity 111 and a storage space 1 for storing particulate liquid 7. The upper and lower spaces of pressure vessel 21 are respectively a pneumatic cavity 211 and a storage space 2 for storing particulate liquid 7. A forward air passage 3 and a reverse air passage 4 are provided between the pneumatic cavity 111 and the pneumatic cavity 211. The forward air passage 3 and the reverse air passage 4 are respectively equipped with a forward air pressure pump 31 and a reverse air pressure pump 41. In non-operating conditions, the air pressure in pressure chamber 111 and pressure chamber 211 is maintained at atmospheric pressure, consistent with the external air pressure. In operating conditions, pressure vessel 11 receives air from pressure vessel 21, creating positive pressure and pressure vessel 21 becomes negative pressure, resulting in a jet of liquid being ejected from jet orifice 131; conversely, pressure vessel 21 receives air from pressure vessel 11, creating positive pressure and pressure vessel 11 becomes negative pressure, resulting in a jet of liquid being ejected from jet orifice 231. Thus, by simply activating the reciprocating air pump 31 or the reverse air pump 41, pressure vessel 11 and pressure vessel 21 can simultaneously achieve positive pressure in one and negative pressure in the other.

[0045] Pressure vessel 11 and pressure vessel 21 are respectively provided with atmospheric pressure vent pipes 5 connecting the outside to the pressure cavity 111 and pressure cavity 211. An atmospheric pressure switch 51, which can be closed under operating conditions, is provided on the atmospheric pressure vent pipe 5. The aforementioned method of maintaining the air pressure in pressure cavity 111 and pressure cavity 211 at atmospheric pressure, consistent with the external air pressure, under non-operating conditions, is achieved by opening the atmospheric pressure switch 51.

[0046] like Figure 5 , 6As shown in Figures 7 and 9, a dual-pressure regulator 6 for maintaining a positive pressure drop from a negative pressure is provided on pressure vessel 11 and pressure vessel 21. The dual-pressure regulator 6 includes a rigid inner liner 61 with vent holes 611 and an elastic expansion sleeve 62 fitted outside the inner liner 61. Vent holes 112 and 212 are respectively provided on the top of pressure vessel 11 and pressure vessel 21. 12 is connected to the first air cavity 111 and the second air cavity 211 respectively. The sleeve opening of the expansion sleeve 62 on the first pressure vessel 11 and the sleeve opening of the expansion sleeve 62 on the second pressure vessel 21 are respectively sealed and bonded to the edge of the opening of the first air hole 112 and the second air hole 212. When the cavity inside the expansion sleeve 62 forms a positive pressure, the expansion sleeve 62 is expanded. When the cavity inside the expansion sleeve 62 forms a negative pressure, the expansion sleeve 62 contracts and is restricted by the inner liner 61.

[0047] The purpose of the above arrangement is to ensure that the absolute value of the negative pressure formed by one pressure vessel 11 and the positive pressure formed by the other pressure vessel 21 is greater than the absolute value of the positive pressure formed by the other pressure vessel. In this way, under operating conditions, the flow from the jet hole 131 through the wire drawing hole 90 to the jet hole 231 is under negative pressure, which further ensures that the high-speed flowing microparticle liquid inside will not flow out from between the outer cone surface 101 and the inner cone surface 901.

[0048] like Figure 6 , 7 As shown, during application, when the reciprocating air pump 31 is turned on, pressure vessel 11 receives air from pressure vessel 21, creating positive pressure and causing pressure vessel 21 to form negative pressure. Because the expansion sleeve 62 of the dual-pressure regulator 6 is restricted by the inner liner 61 and cannot shrink, the gas in the pressure cavity 211 decreases rapidly, allowing the negative pressure to increase normally. Simultaneously, some of the gas entering pressure vessel 11 expands the expansion sleeve 62, reducing the increase in positive pressure in pressure cavity 111. Therefore, the absolute value of the negative pressure in pressure vessel 21 is greater than the absolute value of the positive pressure in pressure vessel 11.

[0049] like Figure 9 As shown, similarly, when the return air pump 41 is turned on, pressure vessel 21 receives air from pressure vessel 11, creating positive pressure and causing pressure vessel 111 to form negative pressure. Because the expansion sleeve 62 of its dual-pressure regulator 6 is restricted by the inner liner 61 and cannot shrink, the gas in the pressure cavity 111 decreases rapidly, allowing the negative pressure to increase normally. Simultaneously, some of the gas entering pressure vessel 21 expands the expansion sleeve 62, reducing the increase in positive pressure in pressure cavity 211. Therefore, the absolute value of the negative pressure in pressure vessel 111 is greater than the absolute value of the positive pressure in pressure vessel 211.

[0050] Air valve 123 and air valve 223 are respectively installed in pressure infusion pipe 12 and pressure infusion pipe 22. When the columnar jet injection begins, preferably, the air valve on the negative pressure side opens first and the air valve on the positive pressure side opens later.

[0051] For example, at the start of injection, when pressure vessel 11 is under positive pressure and pressure vessel 21 is under negative pressure, valve 223 opens first, followed by valve 123. Conversely, when pressure vessel 11 is under negative pressure and pressure vessel 21 is under positive pressure, valve 123 opens first, followed by valve 223. In this way, the flow channel from jet orifice 131 through wire drawing orifice 90 to jet orifice 231 forms a negative pressure before the columnar jet 71 begins injection, preventing the outer conical surface 101 and inner conical surface 901 of this flow channel from leaking the particulate liquid 7 outwards at the start of injection.

[0052] The above embodiments are only used to illustrate the present invention and should not be used to limit the scope of protection covered by the present invention. Any improvements or modifications made without departing from the principle of the present invention should be considered to fall within the scope of protection of the present invention.

Claims

1. A microparticle liquid column jet forming device for grinding wire drawing holes, characterized in that: The device includes a pressure supply channel 1 (1) with a jet nozzle 1 (13) and a pressure supply channel 2 (2) with a jet nozzle 2 (23). The jet nozzle 1 (13) and the jet nozzle 2 (23) respectively have a jet hole 1 (131) and a jet hole 2 (231). The pressure supply channel 1 (1) and the pressure supply channel 2 (2) can form a negative pressure with an absolute value greater than the positive pressure when one side forms a positive pressure. The jet nozzle 1 (13) and the jet nozzle 2 (23) can be connected to both ends of the drawing die (9) in a pressing manner, so that the jet hole 1 (131), the drawing hole (90), and the jet hole 2 (231) form a temporarily connected straight channel. The jet hole 1 (131) and the jet hole 2 (231) are connected in a pressing manner. Both holes (231) can spray columnar jets (71) into the drawing hole (90) under positive pressure, and both can draw in columnar jets (71) from the drawing hole (90) under negative pressure; the pressure supply channel one (1) includes a pressure vessel one (11) and a pressure infusion pipe one (12) connected to the pressure vessel one (11) at one end and to the jet nozzle one (13) at the other end; the pressure supply channel two (2) includes a pressure vessel two (21) and a pressure infusion pipe two (22) connected to the pressure vessel two (21) at one end and to the jet nozzle two (23) at the other end; the upper space and the lower space of the pressure vessel one (111) are respectively the air pressure cavity one (111) and the liquid storage of the microparticle liquid (7). The upper and lower spaces of the first and second pressure vessels (21) are respectively a second pneumatic cavity (211) and a storage space for storing particulate liquid (7); a forward air passage (3) and a reverse air passage (4) are provided between the first and second pressure vessels (111) and the second pressure vessel (211), respectively, and the forward air passage (3) and the reverse air passage (4) are equipped with a forward air pump (31) and a reverse air pump (41); a dual pressure regulator (6) for maintaining a negative pressure drop and a positive pressure is provided on the first and second pressure vessels (11) and the second pressure vessel (21), the dual pressure regulator (6) includes a rigid inner liner (61) with a vent hole (611) and an elastic expansion sleeve (62) sleeved outside the inner liner (61). Ventilation holes 1 (112) and 2 (212) are respectively provided on the top of pressure vessel 1 (11) and pressure vessel 2 (21). Ventilation holes 1 (112) and 2 (212) are respectively connected to air pressure cavity 1 (111) and air pressure cavity 2 (211). The sleeve opening of the expansion sleeve (62) provided on pressure vessel 1 (11) and the sleeve opening of the expansion sleeve (62) provided on pressure vessel 2 (21) are respectively sealed and bonded to the edge of the opening of vent hole 1 (112) and vent hole 2 (212). When the cavity inside the expansion sleeve (62) forms a positive pressure, the expansion sleeve (62) is expanded. When the cavity inside the expansion sleeve (62) forms a negative pressure, the expansion sleeve (62) is contracted and restricted by the inner liner (61).Air valve 1 (123) and air valve 2 (223) are respectively installed on pressure infusion pipe 1 (12) and pressure infusion pipe 2 (22). When the columnar jet injection begins, the air valve on the negative pressure side opens first, and the air valve on the positive pressure side opens later.

2. The microparticle liquid columnar jet forming device for grinding wire drawing holes according to claim 1, characterized in that: The diameters of the jet hole one (131) and jet hole two (231) are equal to the diameter of the wire drawing hole (90).

3. The microparticle liquid columnar jet forming device for grinding wire drawing holes according to claim 1, characterized in that: The jet nozzle one (13) and jet nozzle two (23) are cone-shaped bodies made of wear-resistant material with an outer conical surface (101).

4. The microparticle liquid columnar jet forming device for grinding wire drawing holes according to claim 1, characterized in that: A normal pressure vent pipe (5) is provided on pressure vessel one (11) and pressure vessel two (21) respectively, connecting the outside world to pressure cavity one (111) and pressure cavity two (211). A normal pressure switch (51) that can be closed under working conditions is provided on the normal pressure vent pipe (5).

5. The microparticle liquid columnar jet forming device for grinding wire drawing holes according to claim 3, characterized in that: A connecting pipe 1 (121) is installed between the pressure infusion pipe 1 (12) and the jet nozzle 1 (13), and a connecting pipe 2 (221) is installed between the pressure infusion pipe 2 (22) and the jet nozzle 2 (23). A threaded stop flange 1 (122) and a stop flange 2 (222) are respectively installed on the outer periphery of the connecting pipe 1 (121) and the connecting pipe 2 (221) for adjustable position. A compression spring (86) and a compression spring (87) are respectively fitted around the outer periphery of the connecting pipe (121) between the infusion tubes (12) and the connecting pipe (221) between the stop flange (222) and the pressure infusion tube (22). The compression springs (86) and (87) cooperate with the clamp (8) to press the jet nozzles (13) and (23) tightly against the two ends of the wire drawing die (9).

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