Stainless steel wire flat handle acupuncture needle and assembling device thereof

Abstract

The utility model discloses a stainless steel wire flat handle acupuncture needle and an assembling device thereof, and belongs to the field of medical instruments. The stainless steel wire flat handle acupuncture needle comprises a needle body and a needle handle, the needle handle is formed by winding stainless steel wires, the tail portion of the needle body is a bending section, after the bending section penetrates into the needle handle, the tail portion of the needle handle is flattened to generate a flattening section, an indentation face is generated on the surface of the flattening section, and an interference fit area is generated in a contact area between the interior of the flattening section and the bending section. Or after the bending section penetrates into the needle handle, for the bending section with insufficient interference fit, the laser beam generated by the laser welding device is directly focused on the tail port of the needle handle without stamping or extruding by using a flat pressing mechanism, so that the tail port generates high-temperature melting and is cooled to generate a smooth spherical-crown-shaped welding spot, fingers are not easy to hurt when a doctor uses the needle in a patting manner, and the safety of the doctor is ensured. The problems that in the prior art, the connection firmness of a needle body and a needle handle is insufficient, and the sharpening efficiency of a belt handle is low are solved, and waste caused by the fact that steel wires with damaged drawing clamping surfaces need to be cut in the drawing process is eradicated.

Description

Technical Field

[0001] The utility model relates to the field of medical equipment, in particular to a stainless steel wire flat-handled acupuncture needle and an assembly device thereof. Background Art

[0002] like Figure 2 , 3 As shown, the stainless steel acupuncture needles currently on the market have needle handles made of stainless steel wire. There are several common ways to connect the needle body and the needle handle:

[0003] 1. Press the steel wire segment into a wavy bend so that the amplitude of the wavy bend is larger than the inner hole of the needle handle, then insert the steel wire segment into the inner hole (usually manually inject the unsharpened steel wire segment), and then use a machine to forcibly pull the wavy bend of the steel wire segment into the needle handle, so that the wavy bend and the inner hole of the needle handle form an interference fit, so that the steel wire segment and the needle handle are connected. The needle tip cannot be brought in when the needle handle is pulled in, because the needle tip side will be damaged during the drawing and clamping process, and the injured part of the steel wire segment surface needs to be cut off, resulting in a waste of steel wire. And after the steel wire segment is put through the needle handle, the needle tip needs to be ground with the handle, and the efficiency of the needle tip grinding is much lower than the method of simply grinding the steel wire segment with the needle tip. The pollution caused by dust and polishing wax during the sharpening process also creates greater difficulty for the subsequent cleaning process. Due to the objective dimensional deviation between the inner diameter of the needle handle and the wave bend of the steel wire segment, an appropriate interference fit cannot be formed, resulting in insufficient connection strength between the needle body and the needle handle. Especially for needle bodies with thin diameters, it is even more difficult to achieve the standard strength. In order to ensure quality, special equipment for strength testing is required to screen them one by one and remove products with insufficient connection strength.

[0004] 2. Another method is to insert the tail of the needle body into the needle handle, and then use a laser to weld the tail end of the needle handle to the needle handle (for example, Chinese patent announcement number: CN204709383U, disclosing a stainless steel wire flat handle needle). Although this method makes most of the connection strengths meet the standards, many years of actual production experience have found that there are always a very small number of welding strengths that do not meet the standards, and even there are cold welds. In order to screen the very few products whose welding strengths do not meet the standards, the applicant has also developed a corresponding strength drawing machine (Chinese patent announcement number: CN 105158156B, disclosing a method for using an automatic drawing machine for testing the connection strength of the needle handle and the needle body) to screen 100% of the welded products and pick out the products with unqualified strength, but this process is time-consuming and labor-intensive, and the efficiency is not high. Utility Model Content

[0005] 1. Technical problems to be solved by the utility model

[0006] In view of the problem in the prior art that the needle handle of an acupuncture needle made of stainless steel wire is not firmly connected to the needle body and the needle handle, the utility model provides a stainless steel wire flat-handled acupuncture needle and an assembly device thereof. After the bent section of the needle body is inserted into the needle handle, the tail of the needle handle is flattened to form a flattened section, so that the inner hole of the needle handle is reduced, and an interference fit area is generated inside the flattened section and in contact with the bent section, so that the needle body and the needle handle are fixedly connected; or when the bent section is inserted into the needle handle to produce an insufficient interference fit, the flattening mechanism is not used for stamping or extrusion molding, and the laser generated by the laser welding device is directly focused on the tail port of the needle handle, so that the tail port is melted at high temperature, and a smooth spherical crown weld is generated after cooling. The doctor is not likely to injure his fingers when tapping the needle and the needle looks beautiful.

[0007] 2. Technical solution

[0008] In order to achieve the above-mentioned purpose, the technical solution provided by the utility model is:

[0009] A stainless steel wire flat-handle acupuncture needle comprises a needle body and a needle handle, the needle handle is formed by winding stainless steel wire, the tail of the needle body is a bent section, the bent section penetrates into the needle handle and is flush with the port, the tail of the needle handle is flattened to form a flattened section, an indentation surface is formed on the surface of the flattened section, an interference fit area is formed in the contact area between the inside and the bent section, there is no risk of failure to form an interference fit due to errors in the inner diameter of the needle handle and the amplitude size of the bent section, so that the connection between the needle body and the needle handle is firm and reliable.

[0010] According to a further technical solution, the indentation surface is single-sided or symmetrically double-sided.

[0011] According to a further technical solution, the bending section is serrated or wavy, and the peaks or valleys correspond to the indentation surface, so as to avoid the generation of an interference fit area when the peaks or valleys are misaligned with the indentation surface.

[0012] According to a further technical solution, the tail end of the needle handle is a welding point generated by laser welding.

[0013] An assembly device for the above-mentioned stainless steel wire flat-handled acupuncture needles includes a hopper, a working plate, a needle threading mechanism designed in sequence, and a lower pressing wheel and an upper pressing wheel that are arranged in coordination with each other to form the bent section after the needle body is inserted into the needle handle through the needle threading mechanism. It also includes a needle pushing plate that pushes the bent section back into the needle handle, and a flat pressing mechanism that forms the flat section.

[0014] In a further assembly device, a needle body groove and a needle handle groove adapted to the diameters of the needle body and the needle handle are arranged in parallel and transversely on the surface of the working plate.

[0015] A further assembly device, the hopper includes an inclined upper needle plate and a vertically arranged baffle, and a gap is reserved at the bottom of the baffle for the needle body and the needle handle to pass through.

[0016] A further assembly device, the needle threading mechanism includes a needle sweeping motor and a needle sweeping wheel fixed to the distal end of the output shaft of the needle sweeping motor, the wheel surface of the needle sweeping wheel being tangent to the axial direction of the needle body.

[0017] A method for assembling a stainless steel wire flat handle acupuncture needle, comprising the following steps:

[0018] Feed the needle body and the needle handle in parallel and transversely into the hopper, and both flow into the needle body groove and the needle handle groove respectively through the gap at the bottom of the baffle;

[0019] When the needle body passes through the needle sweeping wheel, the needle sweeping wheel contacts the needle body, and uses the friction between the two to sweep the needle body into the center hole of the needle handle, and the tail end of the needle body passes through the needle handle;

[0020] When the tail end of the needle body rotates to the tangent point of the lower pressing wheel and the upper pressing wheel, the tail end of the needle body is rolled into a bending section by the lower pressing wheel and the upper pressing wheel;

[0021] The needle pusher plate pushes the bending section back into the needle handle and flushes it with the handle port;

[0022] When there is no interference fit between the bending section and the needle handle, the flattening mechanism punches or extrude the flattening section into shape.

[0023] The further assembly method also includes the steps of focusing a laser beam generated by a laser welding device on the tail port of the needle handle, causing the tail port to melt at high temperature, and generating a smooth spherical crown-shaped welding point after cooling.

[0024] A further assembly method is that when the bending section and the needle handle do not have an interference fit, the flat pressing mechanism is not stamped or extruded, and the laser beam generated by the laser welding device is directly focused on the tail port of the needle handle, causing the tail port to melt at high temperature and generate a smooth spherical crown weld after cooling.

[0025] 3. Beneficial effects

[0026] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0027] (1) The stainless steel wire flat handle acupuncture needle of the utility model has a tail end exposed after the needle body passes through the stainless steel wire winding needle handle, and then is bent into 1-5 bent shapes, the amplitude of which is equal to the inner hole of the needle handle, and then the bent tail is pushed into the needle handle, and finally the bent tail is single-sided stamping or double-sided extrusion method is used to reduce the inner hole of the needle handle, and the needle body is tightened to obtain an interference fit;

[0028] (2) The stainless steel wire flat handle acupuncture needle of the utility model is different from the traditional assembly method. The wave bend will not form an interference fit when pushed in, so it is easier to push in, and there will be no problem of damaging the needle tip and wasting the steel wire due to cutting off the damaged part. There is no need to grind the needle tip with the handle afterwards. The steel wire segment can be ground into the needle tip in advance, which greatly improves efficiency;

[0029] (3) The stainless steel wire flat handle acupuncture needle of the utility model has an inner diameter of the needle handle close to the diameter of the needle body. After being pulled in, an interference fit is formed by stamping or extrusion. There is no risk of failure to form an interference fit due to dimensional errors of the inner diameter of the needle handle and the bending section, making the connection 100% reliable and saving the subsequent fastness screening and testing process.

[0030] (4) The stainless steel wire flat handle acupuncture needle of the utility model will form a tiny indentation surface on the outer end of the handle when stamped or extruded. The indentation surface can be single-sided or double-sided. When single-sided stamping is performed and the reverse side is padded, the stress on the stamping surface is greater than the yield limit of the needle handle material and plastic deformation occurs. Since the reverse side has a large contact area due to the padding, the stress is relatively small, so that the stress on the reverse side does not exceed the yield limit and plastic deformation does not occur, thus forming a single-sided indentation surface. When a pressing wheel is used to press, a double-sided indentation surface is formed. The indentation surface is tiny and requires careful observation to be seen, which does not affect the appearance.

[0031] (5) The stainless steel wire flat handle acupuncture needle of the utility model is laser welded at the tail end of the flattened section of the needle handle to form a smooth spherical crown tail end, which is not easy to hurt the doctor's fingers when tapping the needle, and has a beautiful appearance;

[0032] (6) The stainless steel wire flat-handled acupuncture needle of the utility model has a simple manufacturing process, fewer steps, and is easy to automate. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 for Figure 4 Schematic diagram of the enlarged portion B of FIG.

[0034] Figure 2 The needle handle of the prior art is an acupuncture needle wound with stainless steel wire;

[0035] Figure 3 Figure 1 Schematic diagram of the enlarged portion A of FIG.

[0036] Figure 4 It is a schematic diagram of the structure of a stainless steel wire flat handle acupuncture needle according to a specific embodiment;

[0037] Figure 5 It is a schematic diagram of the structure of a stainless steel wire flat handle acupuncture needle according to a specific embodiment;

[0038] Figure 6 for Figure 5 Schematic diagram of the enlarged C part;

[0039] Figure 7 It is a structural schematic diagram of an assembly device of a specific embodiment;

[0040] Figure 8It is a schematic diagram of the state of the needle body passing through the stainless steel wire winding needle handle before the needle threading mechanism sweeps the needle and threads the needle;

[0041] Fig. 9 It is a schematic diagram of the state of the needle body in the needle body groove and the needle handle groove before the needle body passes through the stainless steel wire-wrapped needle handle;

[0042] Fig.10 This is a schematic diagram of the state of the needle body after passing through the stainless steel wire-wrapped needle handle;

[0043] Fig.11 Generate a flattening section state diagram for the flattening needle handle state of the flattening mechanism;

[0044] Fig.12 It is a schematic diagram of the welding state of the tail port of the needle handle by the laser welding device of a specific embodiment;

[0045] Fig.13 It is a schematic diagram of the structure of a stainless steel wire flat handle acupuncture needle according to a specific embodiment;

[0046] Fig.14 It is a schematic diagram of the structure of a stainless steel wire flat-handled acupuncture needle according to a specific embodiment.

[0047] In the figure: 1-needle body; 2-needle handle; 11-bending section; 12-interference fit area; 13-welding point; 21-flattening section; 22-indentation surface; 3-upper needle plate; 4-baffle; 5-lower pressing wheel; 6-upper pressing wheel; 7-needle threading mechanism; 8-working plate; 10-flattening mechanism; 31-needle body groove; 41-needle handle groove; 50-needle pushing plate; 60-rolling position; 71-needle scanning motor; 72-needle scanning wheel; 73-needle scanning positioning block; 80-laser welding device; 81-laser beam; 101-upper punching block; 102-lower punching block. DETAILED DESCRIPTION

[0048] In order to further understand the content of the utility model, the utility model is described in detail with reference to the accompanying drawings.

[0049] Example 1

[0050] The stainless steel wire flat handle acupuncture needle of this embodiment is as follows Figure 1 , 4 As shown, it includes a needle body 1 and a needle handle 2. The needle handle 2 is formed by winding stainless steel wire. The tail of the needle body 1 is a bending section 11. After the bending section 11 penetrates the needle handle 2, the tail of the needle handle 2 is flattened to form a flattened section 21. An indentation surface 22 is generated on the surface of the flattened section 21, and an interference fit area 12 is generated in the internal contact area with the bending section 11. There is no risk of being unable to form an interference fit due to the size error between the inner diameter of the needle handle and the amplitude of the bending section, so that the connection between the needle body 1 and the needle handle 2 is firm and reliable.

[0051] The indentation surface 22 may be Figure 1 , 4The single side shown can also be Figure 5 , 6 Symmetrical double sided shown.

[0052] The bending section 11 is sawtooth or wavy, and the corresponding peaks or valleys of the sawtooth or wavy shape correspond to the indentation surface 22 to avoid the interference fit area 12 from being easily generated when the peaks or valleys are misaligned with the indentation surface 22 .

[0053] The assembly device of the stainless steel wire flat handle acupuncture needle of this embodiment is as follows: Figure 7 As shown, it includes a hopper, a working plate 8, a needle threading mechanism 7 designed in sequence, and a lower pressing wheel 5 and an upper pressing wheel 6 that are arranged in coordination with each other to form the bending section 11 after the needle body 1 is inserted into the needle handle 2 through the needle threading mechanism 7. It also includes a needle pushing plate 50 that pushes the bending section 11 back into the needle handle 2, and a flat pressing mechanism 10 that forms the flattened section 21.

[0054] like Fig. 9 As shown, the surface of the working plate 8 is laterally and parallelly provided with a needle body groove 31 and a needle handle groove 41 adapted to the diameters of the needle body 1 and the needle handle 2, so as to conveniently receive the needle body 1 and the needle handle 2 one by one.

[0055] like Figure 7 As shown, the hopper includes an inclined upper needle plate 3 and a vertically arranged baffle 4, and a gap is reserved at the bottom of the baffle 4 for the needle body 1 and the needle handle 2 to pass through.

[0056] like Figure 8 As shown, the needle threading mechanism 7 includes a needle sweeping motor 71 and a needle sweeping wheel 72 fixed to the distal end of the output shaft of the needle sweeping motor 71 , and the wheel surface of the needle sweeping wheel 72 is tangent to the axial direction of the needle body 1 .

[0057] A method for assembling a stainless steel wire flat handle acupuncture needle, comprising the following steps:

[0058] S1, feed the needle body 1 and the needle handle 2 into the hopper in parallel and horizontally, and both flow into the needle body groove 31 and the needle handle groove 41 respectively through the gap at the bottom of the baffle 4;

[0059] S2. As the working plate 8 feeds the needle body 1 and the needle handle 2 forward, when the needle body 1 passes through the needle sweeping wheel 72, the needle sweeping wheel 72 contacts the needle body 1, and uses the friction between the two to sweep the needle body 1 into the center hole of the needle handle 2, and the tail end of the needle body 1 passes through the center hole of the needle handle 2. Figure 8 The direction of the arrow in the middle is the scanning direction. Fig.10 As shown, the tail end of the needle body 1 passes through the needle handle 2 for a section, the section length is at least 1 cm, and after the needle body 1 passes through the needle handle 2, as shown in FIG. Figure 7 , 8 As shown, the length of the bending section 11 is limited by the scanning needle positioning block 73, and the scanning needle positioning block 73 is arranged on the side of the working plate 8;

[0060] S3, when the tail end of the needle body 1 is turned to the rolling position 60 where the lower pressing wheel 5 and the upper pressing wheel 6 are tangent, the lower pressing wheel 5 and the upper pressing wheel 6 turn in opposite directions, and the tail end of the needle body 1 is rolled by the lower pressing wheel 5 and the upper pressing wheel 6 into a bending section 11, which is bent into 1-5 wavy or sawtooth shapes; the wheel surfaces of the lower pressing wheel 5 and the upper pressing wheel 6 are matched to set a transverse wavy or sawtooth convex-concave structure to generate a wavy or sawtooth bending section 11, preferably a wavy shape;

[0061] S4, pushing the needle plate 50 to push the bending section 11 back into the needle handle 2;

[0062] S5, when the bending section 11 and the needle handle 2 do not have an interference fit, the flattening mechanism 10 punches or extrude the flattening section 21; Fig.11 As shown, the flattening mechanism 10 includes an upper punching block 101 and a lower punching block 102. The upper punching block 101 or the lower punching block 102 can be used alone to punch the flattening section 21 to generate a single-sided indentation surface 22, or an upper extrusion wheel and a lower extrusion wheel can be used to replace the upper punching block 101 and the punching block 102, and the two wheels can sweep the flattening section 21 to generate a double-sided indentation surface 22.

[0063] In the stainless steel wire flat handle acupuncture needle and its assembly device of this embodiment, after the needle body 1 passes through the stainless steel wire winding needle handle 2, a section of the tail end is exposed, and then it is bent into 1-5 waves, and the wave amplitude is equal to the inner hole of the needle handle 2, and then the wavy tail of the needle body 1 is pushed into the needle handle 2, and finally the wavy tail is single-sided stamping or double-sided extrusion method is used to reduce the inner hole of the needle handle 2, and the interference fit area 12 of the interference fit is obtained after the needle body 1 is tightened. There is no risk of being unable to form an interference fit due to the size error of the inner diameter of the needle handle and the amplitude of the bending section, so that the connection is 100% reliable, saving the subsequent detection process;

[0064] Different from the traditional assembly method, the wave bend does not form a sufficient interference fit when pushed in, so it is easier to push in, there will be no problem of damaging the needle tip, and there is no need to grind the needle tip with a handle. The steel wire segment can be ground into the needle tip in advance, which greatly improves production efficiency;

[0065] When stamping or extruding, a tiny indentation surface 22 will be formed on the outer end of the needle handle 2. The indentation surface 22 may be on one side or on both sides. Single-sided stamping is likely to form a single-sided indentation surface 22, and pressing with a pressing wheel will form a double-sided indentation surface 22. The indentation surface 22 is tiny and requires careful observation to be seen, and will not affect the appearance. The entire assembly and production process is simple, with fewer steps, and is easy to automate.

[0066] Example 2

[0067] The stainless steel wire flat handle acupuncture needle of this embodiment is manufactured after the assembly device and method shown in embodiment 1 are completed. Fig.12As shown, the laser generated by the laser welding device 80 is transmitted to the laser gun through the optical fiber, and the laser beam of the optical component of the laser gun is focused on the tail port of the needle handle 2, causing the tail port to melt at high temperature, and a smooth spherical crown-shaped weld point 13 is generated after cooling.

[0068] The stainless steel wire flat handle acupuncture needle of this embodiment may also have the indentation surface 22 as follows: Fig.13 The single side shown can also be Fig.14 The symmetrical double sides are shown. Laser welding is performed at the tail end of the flattened section 21 of the needle handle 2 to generate a smooth spherical crown tail end welding point 13.

[0069] Doctors are not likely to hurt their fingers when using the needle, and the appearance is beautiful.

[0070] Example 3

[0071] For the stainless steel wire flat-handle acupuncture needle of this embodiment, in the assembly device and method shown in Example 1, when the bending section 11 and the needle handle 2 have an insufficient interference fit, the flat pressing mechanism 10 is no longer stamped or extruded, and the laser beam 81 generated by the laser welding device 80 is directly focused on the tail port of the needle handle 2, causing the tail port to melt at high temperature, and a smooth spherical crown-shaped weld 13 is generated after cooling.

[0072] The stainless steel wire flat-handled acupuncture needle of this embodiment has the deficiency of interference fit compensated by laser welding, and the smooth spherical crown tail end generated by laser welding at the tail port is not easy to hurt the doctor's fingers when the doctor uses the needle, and the appearance is beautiful. It solves the problems of insufficient connection strength between the needle body and the needle handle in the prior art of making stainless steel wire flat-handled acupuncture needles, especially the generally low strength of the needle body with a thinner diameter, which is difficult to meet the standard, and the low efficiency of sharpening the handle, which makes the subsequent cleaning process more difficult. It also eliminates the waste caused by the need to cut the steel wire due to surface damage caused by drawing and clamping during drawing.

[0073] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure and manufacturing steps are not limited thereto. Therefore, if a person skilled in the art is inspired by it and, without departing from the purpose of the invention, designs a structure and an implementation method similar to the technical solution without creativity, they should all fall within the protection scope of the present invention.

Claims

1. A stainless steel wire flat handle acupuncture needle, comprising a needle body (1) and a needle handle (2), wherein the needle handle (2) is wound from a stainless steel wire, and the tail of the needle body (1) is a bending section (11), characterized in that: After the bending section (11) penetrates the needle handle (2), the tail of the needle handle (2) is flattened to form a flattened section (21), an indentation surface (22) is formed on the surface of the flattened section (21), and an interference fit area (12) is formed in the internal contact area with the bending section (11).

2. A stainless steel wire flat handle acupuncture needle according to claim 1, characterized in that: The indentation surface (22) is a single surface or a symmetrical double surface.

3. A stainless steel wire flat handle acupuncture needle according to claim 1, characterized in that: The bending section (11) is sawtooth-shaped or wavy, and the peaks or valleys correspond to the indentation surface (22).

4. A stainless steel wire flat handle acupuncture needle according to claim 1, characterized in that: The tail end of the needle handle (2) is a welding point (13) generated by laser welding.

5. An assembly device for a stainless steel wire flat handle acupuncture needle according to any one of claims 1 to 4, characterized in that: The invention comprises a hopper, a working plate (8), a needle threading mechanism (7) designed in sequence, and a lower pressing wheel (5) and an upper pressing wheel (6) which are arranged in coordination with each other and which form a bending section (11) after the needle body (1) is inserted into a needle handle (2) by the needle threading mechanism (7). The invention also comprises a needle pushing plate (50) which pushes the bending section (11) back into the needle handle (2), and a flattening mechanism (10) which forms a flattening section (21).

6. An assembly device according to claim 5, characterized in that: The surface of the working plate (8) is provided with a needle body groove (31) and a needle handle groove (41) which are adapted to the diameters of the needle body (1) and the needle handle (2) in parallel and transversely matched manner.

7. An assembly device according to claim 6, characterized in that: The hopper comprises an oblique upper needle plate (3) and a vertically arranged baffle plate (4), and a gap is reserved at the bottom of the baffle plate (4) for the needle body (1) and the needle handle (2) to pass through.

8. An assembly device according to claim 6, characterized in that: The needle threading mechanism (7) comprises a needle sweeping motor (71) and a needle sweeping wheel (72) fixed to the distal end of the output shaft of the needle sweeping motor (71), and the wheel surface of the needle sweeping wheel (72) is tangent to the axial direction of the needle body (1).

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