Airflow wire guide device applied to superfine wire electrode conveying of low-speed wire feeding machine tool

Abstract

The airflow wire guiding device comprises a side fixing assembly and an airflow wire guiding structure, the side fixing assembly is provided with a through hole penetrating left and right and an adjusting valve mounting hole connected with the through hole, and the airflow wire guiding structure comprises a first connecting block and a second connecting block. The first connecting block is provided with a first conical hole, the second connecting block comprises a first connecting part, a middle connecting part and a second connecting part, the first connecting part is provided with a second conical hole, and the first connecting part is provided with a transverse flow guide hole which penetrates through the second conical hole and is communicated with the annular airflow groove; the airflow adjusting valve operates, so that airflow flows into the second conical hole and the first conical hole sequentially along the adjusting valve mounting hole, the annular airflow groove and the transverse flow guide hole and is discharged along the small end of the first conical hole, the tail electrode wire is guided, and short circuit and machine halt caused by winding of the electrode wire are avoided.

Description

Technical Field

[0001] The invention relates to machine tool technology, in particular to an airflow wire guiding device used for conveying ultra-fine electrode wires in a slow-moving wire machine tool. Background Art

[0002] At present, wire-cutting machine tools refer to wire-cutting EDM machines: a type of CNC machining machine that can remove metal and complete workpiece cutting tasks. Wire-cutting uses a continuously moving thin metal wire (called an electrode wire, generally copper wire and molybdenum wire) as an electrode to perform pulsed spark discharge on the workpiece, generating a high temperature of more than 6,000 degrees, removing metal and cutting into shape.

[0003] The patent document with application number "CN202323171387.0" discloses a wire-cutting machine tool, including a machine tool body, on which a fixing mechanism is arranged; the fixing mechanism includes a connecting mechanism, the bottom of the middle part of the connecting mechanism is movably connected with a supporting assembly, a first adjusting assembly is arranged on the connecting mechanism, and a second adjusting assembly is arranged at the bottom of the connecting mechanism, and the supporting assembly and the second adjusting assembly are both fixedly mounted on the machine tool body. The advantage of the utility model is that the wire-cutting machine tool can adjust the angle of the mold as needed when in use by setting a fixing mechanism, so as to avoid the taper of the cutting seam being wide at the top and narrow at the bottom due to the loss of the electrode wire when cutting the mold, thereby ensuring the processing accuracy, avoiding the situation where the size or quality of the parts manufactured using the mold does not meet the standards due to the error existing on the mold, and at the same time ensuring the stability of the mold during the cutting process, thereby improving the processing accuracy of the mold.

[0004] The patent document with application number "CN201921302112.7" discloses a cylinder-type electrode wire normally-open clamp, including a fixed bracket with a guide seat at the bottom, the upper end of the guide seat extends to the surrounding areas to form a boss, the interior of the guide seat is provided with a first cavity and a second cavity, the two ends of the guide are respectively arranged in the fixed bracket and the second cavity, one end of the ceramic guide structure extends out of the second cavity, the electrode wire passes through the guide, the guide seat and the ceramic guide structure in sequence from the top of the fixed bracket, a through hole for installing the cylinder is provided on the side wall of the boss, one end of the cylinder extending into the first cavity is connected to a clamping block, and a clamping hole is opened along the side wall of the guide at a position opposite to the clamping block and the guide.

[0005] The patent document with application number "CN202220617851.0" discloses an electrode wire guide device for a slow-moving wire cutting machine tool, which includes a replacement tube, a base tube and an outer casing from the inside to the outside. The replacement tube includes a first upper head body and a lower inner tube fixedly connected up and down, an axial electrode wire hole is arranged between the first upper head body and the lower inner tube, and a first external thread is arranged on the upper end of the outer wall of the lower inner tube. The base tube includes a second upper head body and a lower middle tube fixedly connected up and down, and a middle hole matching the lower inner tube is arranged axially between the second upper head body and the lower middle tube, and a first internal thread matching the first external thread is arranged on the upper end of the inner wall of the middle hole, and a second external thread is arranged on the upper end of the outer wall of the lower middle tube. The replacement tube of the utility model can be replaced after wear, and there is no need to replace the base tube and the outer casing, and the maintenance cost is low; in addition, when the utility model is in use, the coolant enters the coolant cavity through the liquid inlet hole and is sprayed from the annular nozzle to the middle and lower part to cool the electrode wire, and the cooling effect is good.

[0006] The above patent documents, combined with the prior art, are all aimed at the problem of wire guidance at the machine head. However, for the problem of tail wire drainage, the existing tail wire drainage for ultra-fine electrode wire of slow-moving wire machine tools has the following defects:

[0007] In the prior art, the 0.25mm wire feeding device of the slow-moving wire cutting machine tool is not suitable for wire cutting of patterned workpieces with R less than 0.12mm. Due to the development of the automotive lighting industry, the requirements for the R angle of the automotive lighting patterns are becoming more and more precise, and the requirements for the mold surface are becoming higher and higher. The slow-moving wire cutting machine tool originally equipped with a 0.25mm wire feeding device cannot meet the requirements, and a thinner wire such as 0.07mm copper wire needs to be used for wire cutting.

[0008] However, when the slow-feeding wire cutting machine uses 0.07mm electrode wire for processing, because the 0.07mm wire is too thin and light, when the electrode wire passes between the wire pressing wheels, the wire bends and twists when it is led out, resulting in poor wire feeding and frequent wire breakage, obvious line marks on the cutting surface, and poor processing accuracy, which has a great impact on the mold quality and production efficiency. Summary of the invention

[0009] In order to overcome the deficiencies of the prior art, the present invention provides an airflow wire guiding device for transporting ultra-fine electrode wires of slow-moving wire machines, which solves the problem of tail wire drainage of ultra-fine electrode wires of slow-moving wire machines.

[0010] The first aspect of the present invention is to provide an airflow wire guiding device for ultra-fine electrode wire transportation of a slow-moving wire machine tool, comprising a side fixing component and an airflow wire guiding structure, wherein the side fixing component is provided with a through hole running through the left and right sides and a regulating valve mounting hole connected with the through hole, and an airflow regulating valve is installed at the regulating valve mounting hole; the airflow wire guiding structure comprises a first connecting block and a second connecting block, wherein the first connecting block is provided with a first conical hole, and the second connecting block comprises a first connecting portion, a middle connecting portion, and a second connecting portion connected in sequence, wherein the first connecting portion is provided with a second conical hole, and the first connecting portion and the An annular airflow groove is formed along the middle connecting portion of the second connecting portion, and a transverse guide hole is provided at the first connecting portion, which passes through the second conical hole and is connected with the annular airflow groove; the first connecting block is fitted with the second connecting block, and the large end of the second conical hole is connected with the large end of the first conical hole, and the electrode wire passes through the second conical hole and the first conical hole and moves, and the airflow regulating valve is operated to make the airflow flow into the second conical hole and the first conical hole in sequence along the regulating valve mounting hole, the annular airflow groove, and the transverse guide hole and be discharged along the small end of the first conical hole, so as to guide the tail electrode wire.

[0011] In the first aspect of the present invention, as a preferred embodiment, the second tapered hole forms a tapered hole end surface line along the end surface of the first connecting portion, and the transverse guide hole passes through the tapered hole end surface line.

[0012] In the first aspect of the present invention, as a preferred embodiment, the number of the transverse guide holes is 2-6.

[0013] In the first aspect of the present invention, as a preferred embodiment, the number of the transverse guide holes is 4, and the 4 transverse guide holes are evenly distributed around the second tapered hole.

[0014] In the first aspect of the present invention, as a preferred embodiment, the maximum diameter of the first tapered hole is greater than or equal to the maximum diameter of the second tapered hole.

[0015] In the first aspect of the present invention, as a preferred embodiment, the side fixing assembly includes a sleeve portion and a side fixing portion, and the side fixing portion is connected to the side of the sleeve portion.

[0016] In the first aspect of the present invention, as a preferred embodiment, the regulating valve mounting hole and the through hole are located in the sleeve portion.

[0017] In the first aspect of the present invention, as a preferred embodiment, the side fixing portion is provided with strip-shaped fixing holes along the length direction.

[0018] In the first aspect of the present invention, as a preferred embodiment, the first tapered hole is provided with a first arc chamfer along the end surface.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The first connection block is provided with a first conical hole, and the second connection block includes a first connection part, a middle connection part, and a second connection part connected in sequence. The first connection part is provided with a second conical hole, and the first connection part and the second connection part form an annular airflow groove along the middle connection part. The first connection part is provided with a transverse guide hole that passes through the second conical hole and is connected with the annular airflow groove; the first connection block fits with the second connection block, and the large end of the second conical hole is connected with the large end of the first conical hole. The electrode wire passes through the second conical hole and the first conical hole and moves. The airflow regulating valve operates so that the airflow flows into the second conical hole and the first conical hole in sequence along the regulating valve mounting hole, the annular airflow groove, and the transverse guide hole and is discharged along the small end of the first conical hole, so as to guide the tail electrode wire. Specifically, this device is installed at the tail of the wire feeding device, which is a structure that was not originally on the machine tool. It solves the drainage processing problem and guides the tail electrode wire, avoiding poor wire feeding, frequent wire breaking, and machine shutdown due to electrode wire winding. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A perspective view of the present invention;

[0022] Figure 2 is a cross-sectional view of the present invention;

[0023] Figure 3 is another cross-sectional view of the present invention;

[0024] Figure 4 It is a three-dimensional diagram of the airflow guide wire structure;

[0025] Figure 5 It is a partial stereoscopic diagram of the airflow guide wire structure;

[0026] Figure 6 is another partial stereoscopic diagram of the airflow guide wire structure;

[0027] Figure 7 is a three-dimensional diagram of a second connecting block;

[0028] Figure 8 is a three-dimensional diagram of a first connecting block;

[0029] Fig. 9 is another stereoscopic view of the first connecting block;

[0030] Fig.10 is a perspective view of a side fixing assembly;

[0031] Fig.11 Another structural diagram of the side fixing assembly.

[0032] In the figure: 10, side fixing component; 11, sleeve part; 111, through hole; 112, airflow regulating valve mounting hole; 12, side fixing part; 121, strip fixing hole; 200, airflow guide wire structure; 20, first connecting block; 21, first conical hole; 211, first arc chamfer; 30, second connecting block; 31, first connecting part; 310, conical hole end line; 311, second conical hole; 312, transverse guide hole; 32, middle connecting part; 320, annular airflow groove; 33, second connecting part. DETAILED DESCRIPTION

[0033] Below, in conjunction with the accompanying drawings and specific embodiments, the invention is further described. It should be noted that, under the premise of no conflict, the various embodiments described below or the various technical features can be arbitrarily combined to form a new embodiment. Except as otherwise specified, the materials and equipment used in this embodiment can be purchased from the market. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0034] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In the description of the present application, "plurality" means two or more, unless otherwise precisely and specifically specified.

[0035] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be connected through an intermediary medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0037] like Figure 1-11 As shown, an airflow wire guiding device for ultra-fine electrode wire transportation in a slow-moving wire-cutting machine tool comprises a side fixing component 10 and an airflow wire guiding structure 200. The side fixing component 10 is provided with a through hole 111 running through the left and right sides, and a regulating valve mounting hole 112 connected with the through hole 111, and an airflow regulating valve is installed at the regulating valve mounting hole 112; the airflow wire guiding structure 200 comprises a first connecting block 20 and a second connecting block 30, the first connecting block 20 is provided with a first tapered hole 21, the second connecting block 30 comprises a first connecting portion 31, a middle connecting portion 32, and a second connecting portion 33 connected in sequence, the first connecting portion 31 is provided with a second tapered hole 311, the first connecting portion 31 and the second connecting portion 33 are connected in sequence, 3 An annular airflow groove 320 is formed along the middle connecting portion 32, and a transverse guide hole 312 is provided at the first connecting portion 31, which passes through the second tapered hole 311 and is connected to the annular airflow groove 320; the first connecting block 20 is fitted with the second connecting block 30, and the large end of the second tapered hole 311 is connected with the large end of the first tapered hole 21, and the electrode wire passes through the second tapered hole 311 and the first tapered hole 21 and moves, and the airflow regulating valve operates, so that the airflow flows into the second tapered hole 311 and the first tapered hole 21 along the regulating valve mounting hole 112, the annular airflow groove 320, and the transverse guide hole 312 in sequence and is discharged along the small end of the first tapered hole 21, so as to guide the tail electrode wire. Specifically, the device is installed at the tail of the wire-feeding device, which is a structure that is not originally on the machine tool, solves the drainage processing problem, and guides the tail electrode wire, avoiding poor wire running, frequent wire breakage, and machine shutdown due to electrode wire winding.

[0038] In the first aspect of the present invention, as a preferred embodiment, the second tapered hole 311 forms a tapered hole end surface line 310 along the end surface of the first connecting portion 31, and the transverse guide hole 312 passes through the tapered hole end surface line 310. The device is mainly for thin wires below 0.1 mm. It can realize the smooth use of 0.07 mm electrode wire in the slow wire machine originally equipped with 0.25 mm electrode wire, reducing the high cost of purchasing additional equipment. But it is also applicable to electrode wires of other specifications.

[0039] In the first aspect of the present invention, as a preferred embodiment, the number of the transverse guide holes 312 is 2-6. Specifically, in this embodiment, the number of the transverse guide holes 312 is 4, and the 4 transverse guide holes 312 are evenly distributed around the second tapered hole 311.

[0040] In the first aspect of the present invention, as a preferred embodiment, the maximum diameter of the first tapered hole 21 is greater than or equal to the maximum diameter of the second tapered hole 311, so as to further improve the guiding effect.

[0041] In the first aspect of the present invention, as a preferred embodiment, the side fixing assembly 10 includes a sleeve portion 11 and a side fixing portion 12, and the side fixing portion 12 is connected to the side of the sleeve portion 11. The through hole 111 and the regulating valve mounting hole 112 are located in the sleeve portion 11. The side fixing portion 12 is provided with a strip fixing hole 121 along the length direction, which is convenient for disassembly and assembly.

[0042] In the first aspect of the present invention, as a preferred embodiment, the first conical hole 21 is provided with a first arc chamfer 211 along the end surface. Specifically: In the prior art, there is also a method of using a cylinder to control a clamping block to clamp the electrode wire, which plays a role in stabilizing the electrode wire. The device in the present application completely uses the airflow to guide the electrode wire, and the structural design is ingenious and simple.

[0043] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. An airflow wire guiding device for ultra-fine electrode wire transportation in a slow-moving wire machine tool, characterized in that: It includes a side fixing component and an airflow guide wire structure. The side fixing component is provided with through holes running through the left and right sides and a regulating valve mounting hole connected with the through holes. An airflow regulating valve is installed at the regulating valve mounting hole. The airflow guide wire structure comprises a first connecting block and a second connecting block, wherein the first connecting block is provided with a first tapered hole, and the second connecting block comprises a first connecting portion, a middle connecting portion, and a second connecting portion connected in sequence, wherein the first connecting portion is provided with a second tapered hole, and the first connecting portion and the second connecting portion form an annular airflow groove along the middle connecting portion, and the first connecting portion is provided with a transverse guide hole passing through the second tapered hole and communicating with the annular airflow groove; The first connecting block is fitted with the second connecting block, the large end of the second tapered hole is connected with the large end of the first tapered hole, the electrode wire passes through the second tapered hole and the first tapered hole and moves, and the airflow regulating valve is operated to make the airflow flow into the second tapered hole and the first tapered hole along the regulating valve mounting hole, the annular airflow groove, and the transverse guide hole in sequence and be discharged along the small end of the first tapered hole, so as to guide the tail electrode wire.

2. The airflow wire guiding device for ultra-fine electrode wire transportation used in a slow-moving wire machine tool according to claim 1, characterized in that: The second tapered hole forms a tapered hole end surface line along the end surface of the first connecting portion, and the transverse guide hole passes through the tapered hole end surface line.

3. The airflow wire guiding device for ultra-fine electrode wire transportation used in a slow-moving wire machine tool according to claim 2, characterized in that: The number of the transverse guide holes is 2-6.

4. The airflow wire guiding device for ultra-fine electrode wire transportation used in a slow-moving wire machine tool as claimed in claim 3, characterized in that: The number of the transverse flow guide holes is 4, and the 4 transverse flow guide holes are evenly distributed around the second tapered hole.

5. The airflow wire guiding device for ultra-fine electrode wire transportation used in a slow-moving wire machine tool according to claim 1, characterized in that: The maximum diameter of the first tapered hole is greater than or equal to the maximum diameter of the second tapered hole.

6. The airflow wire guiding device for ultra-fine electrode wire transportation used in a slow-moving wire machine tool according to claim 1, characterized in that: The side fixing assembly comprises a sleeve portion and a side fixing portion, and the side fixing portion is connected to the side of the sleeve portion.

7. The airflow wire guiding device for ultra-fine electrode wire transportation used in a slow-moving wire machine tool according to claim 6, characterized in that: The regulating valve mounting hole and the through hole are located in the sleeve portion.

8. The airflow wire guiding device for ultra-fine electrode wire transportation used in a slow-moving wire machine tool according to claim 6, characterized in that: The side fixing portion is provided with a strip-shaped fixing hole along the length direction.

9. The airflow wire guiding device for ultra-fine electrode wire transportation used in a slow-moving wire machine tool according to claim 1, characterized in that: The first tapered hole is provided with a first arc chamfer along the end surface.

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