A positioning jig for soldering a lead with a small wire diameter and its operation method

Abstract

The present application provides a positioning jig for welding small-diameter leads and an operation method thereof. The jig includes a jig base, a positioning member, and a first pressing member. The jig base is provided with a plurality of lead placement positions at intervals along a transverse direction. Each lead placement position is provided with a lead groove for placing a lead. The positioning member is used to position and fix the lead in the lead groove. The jig base is further provided with a wire pressing groove for placing a wire pressing line along the transverse direction. The wire pressing line is pressed against the part of the lead extending out of the lead groove. The jig base is respectively provided with first rubber particles at the positions at both ends of the plurality of lead placement positions. The top surface of the first rubber particles is flush with the surface where the notch of the wire pressing groove is located. The part of the wire pressing line corresponding to the first rubber particles is placed on the top surface of the first rubber particles. The first pressing member presses on the part of the wire pressing line corresponding to the first rubber particles, so that the part of the wire pressing line located between the two first rubber particles is straight and taut, improving the sensitivity and welding efficiency of the lead welding part, and further improving the yield rate.

Description

Technical Field

[0001] This application relates to the technical field of machining, and particularly to a welding positioning jig for small-diameter leads and its operation method. Background Art

[0002] Products such as explosives require multiple leads to be continuously ignited during detonation, and there are strict requirements for the time difference of detonation. Therefore, there are high requirements for the welding process of the leads. The welded parts of the processed leads need to have extremely high sensitivity to ensure the ignition transfer efficiency. The reserved lengths of the ends of multiple leads need to be consistent to ensure the uniformity of the detonation time interval, thereby ensuring the detonation efficiency.

[0003] The leads of these products have a small diameter. In the existing welding jigs for small-diameter leads, problems such as wire pressing relaxation are likely to occur during the processing, resulting in low sensitivity of the welded parts of the leads, poor welding effects, or situations where the wire pressing is too tight and the wire breaks; and the reserved lengths of the ends of the leads are uneven, reducing the product quality and the yield rate. Therefore, how to ensure that the wire pressing is straight, tight, and unbroken during the welding process of the leads is a technical difficulty that those skilled in the art urgently need to solve. Summary of the Invention

[0004] In view of this, this application proposes a welding positioning jig for small-diameter leads and its operation method that can effectively solve the above problems.

[0005] This application provides a welding positioning jig for small-diameter leads, including a jig base, a positioning member, and a first pressing member. The jig base is provided with a plurality of lead placement positions at intervals along a transverse direction. Each lead placement position is provided with a lead groove for placing the lead. The positioning member is used to position and fix the lead in the lead groove. The jig base is further provided with a wire pressing groove for placing the wire pressing along the transverse direction. The wire pressing is pressed on the part of the lead extending out of the lead groove. The jig base is respectively provided with first rubber particles at the positions at both ends of the plurality of lead placement positions. The top surface of the first rubber particle is flush with the surface where the notch of the wire pressing groove is located. The part of the wire pressing corresponding to the first rubber particle is placed on the top surface of the first rubber particle. The first pressing member presses on the part of the wire pressing corresponding to the first rubber particle to make the part of the wire pressing between the two first rubber particles straight and tight.

[0006] In a preferred embodiment, a second rubber particle is provided between two adjacent lead placement positions. The top surface of the second rubber particle is flush with the surface where the notch of the wire pressing groove is located. The part of the wire pressing corresponding to the second rubber particle is placed on the top surface of the second rubber particle. The jig further includes a second pressing member. The second pressing member presses on the part of the wire pressing corresponding to the second rubber particle to make the part of the wire pressing corresponding to each lead placement position straight and tight.

[0007] In a preferred embodiment, first accommodation grooves are respectively provided at two ends of the jig base corresponding to the first rubber particles, the extending path of the wire pressing groove passes through the first accommodation grooves, and the first rubber particles are accommodated in the first accommodation grooves.

[0008] In a preferred embodiment, the first pressing member is rotatably connected to the jig base to press or release the wire. When the first pressing member presses the wire, the first pressing member is fixed relative to the jig base through a fixing mechanism.

[0009] In a preferred embodiment, a boss is formed between two adjacent lead placement positions, a second accommodation groove is provided on the boss, the extending path of the wire pressing groove passes through the second accommodation groove, and the second rubber particles are accommodated in the second accommodation groove.

[0010] In a preferred embodiment, the top surface of the second rubber particles is lower than the top surface of the first rubber particles.

[0011] In a preferred embodiment, a chute is provided around the boss, the chute is communicated with the lead groove, the jig further includes a movable limiting member, the movable limiting member is slidably arranged in the chute, the extending path of the wire pressing groove passes through the movable limiting member, a limiting groove is provided on a part of the movable limiting member opposite to the lead groove, and the end wall of the limiting groove stops the lead to limit it.

[0012] In a preferred embodiment, a limiting hole is provided on the end wall of the limiting groove corresponding to the lead groove.

[0013] In a preferred embodiment, the width of the wire pressing groove located in the movable limiting member is smaller than the width of the wire pressing groove located in the jig base, and within the sliding stroke of the movable limiting member, the wire pressing groove penetrates in the transverse direction.

[0014] The present application also provides an operation method for a small wire diameter lead welding positioning jig, and the operation method includes the following steps:

[0015] S1: Install the movable limiting member in the chute, and according to the pre-designed lead reserved length, slide the movable limiting member to adjust the preset distance and fix it;

[0016] S2: Place the lead to be processed in the lead groove, adjust the lead so that one end thereof extends into the limiting hole, and the end of the lead abuts against the end wall of the limiting hole, and then use a positioning member to position and fix the lead;

[0017] S3: Place the first glue particle into the corresponding first accommodation groove, place the second glue particle into the corresponding second accommodation groove, and then straighten the wire to be pressed and place it in the wire pressing groove.

[0018] S4: Rotate the first pressing member to press the wire portion corresponding to the first glue particle, so that the whole wire to be pressed is straight and taut, and then fix the first pressing member relative to the jig base.

[0019] S5: Install the second pressing member on the jig base to press the wire portion corresponding to the second glue particle, so that the portion of the wire corresponding to each lead placement position is straight and taut, and then fix the second pressing member relative to the jig base.

[0020] S6: Use a welding tool to weld the intersection of the wire to be pressed and the lead, and complete the welding operation.

[0021] In summary, the present application provides a small wire diameter lead welding positioning jig and its operation method. First glue particles are respectively arranged at the positions at both ends of several lead placement positions. The first pressing member presses on the portion of the wire to be pressed corresponding to the first glue particle. The first glue particle has a certain elastic deformation ability and has the effect of relieving the stress on the wire to be pressed. Under the pressing force of the first pressing member, the first glue particle undergoes elastic contraction, and the wire to be pressed undergoes a slight stretch, so that the portion of the wire to be pressed between the two first glue particles is straight and taut without breaking, improving the sensitivity and welding efficiency of the lead welding part, and further improving the yield rate. Similarly, second glue particles are arranged between two adjacent lead placement positions, and the second pressing member is used to press on the portion of the wire to be pressed corresponding to the second glue particle, so that the portion of the wire to be pressed corresponding to each lead placement position remains straight and taut without breaking, further improving the sensitivity and welding efficiency of the lead welding part, and greatly improving the yield rate. The small wire diameter lead welding positioning jig of the present application has a simple structure, is easy to manufacture, has a low cost, and its operation method is extremely simple, improving the processing efficiency, effectively improving the welding efficiency and the yield rate, and the processed products have excellent quality. Description of the Drawings

[0022] Figure 1 is a three-dimensional schematic diagram of an exemplary small wire diameter lead welding positioning jig of the present application.

[0023] Figure 2 is Figure 1 a preliminary exploded schematic diagram of the small wire diameter lead welding positioning jig in

[0024] Figure 3 is Figure 2 a further exploded schematic diagram of the small wire diameter lead welding positioning jig in

[0025] Figure 4 is Figure 1 another exploded schematic diagram of the small wire diameter lead welding positioning jig in

[0026] Figure 5 is Figure 4 an enlarged schematic view of part A in

[0027] Figure 6 is Figure 5 a three-dimensional schematic view of the movable limiting member in

[0028] Figure 7 is Figure 1 a cross-sectional view of the small wire diameter lead welding positioning jig along the extending direction of the wire pressing groove in

[0029] Figure 8 a schematic view of the wire pressing in the first rubber particle area

[0030] Figure 9 a schematic view of the wire pressing in the second rubber particle area

[0031] Figure 10 is a schematic process flow diagram of the exemplary operation method of the present application. Detailed Description of the Preferred Embodiments

[0032] Before describing the embodiments in detail, it should be understood that the present application is not limited to the detailed structures or element arrangements described hereinafter or in the accompanying drawings of the present application. The present application can be implemented in other ways. Moreover, it should be understood that the terms and phrases used herein are only for descriptive purposes and should not be construed restrictively. The terms "including", "comprising", "having" and the like used herein are intended to include the matters listed hereinafter, their equivalents and other additional matters. In particular, when describing "a certain element", the present application does not limit the number of such elements to one, and may also include a plurality.

[0033] Please also refer to Figures 1 to 9 as shown, the present application provides a small wire diameter lead welding positioning jig 10 for positioning and welding leads and wire pressing. The jig 10 includes a jig base 12, a positioning member 14, a first pressing member 16 and a second pressing member 18. A plurality of lead placement positions 20 are evenly spaced along the transverse direction at the top of the jig base 12, and the transverse direction is, for example, the length direction of the jig base 12. The number of lead placement positions 20 can be set according to actual needs, and the number of lead placement positions 20 does not affect the implementation of the technical solution of the present application. For example, the lead placement positions 20 can be set to two, five, ten, twenty, etc. Five lead placement positions 20 are set in the present application.

[0034] Specifically, a tooling table protrudes from the top of the jig base 12. The top surface of the tooling table forms a first plane 22. A wire pressing groove 24 for placing the wire pressing 21 is provided on the first plane 22 along the transverse direction. Each lead placement position 20 is provided with a lead groove 26 for placing the lead. The lead groove 26 is opened on the first plane 22 and is perpendicular to the transverse direction. In the illustrated embodiment, two lead grooves 26 are provided at each lead placement position 20, and the two lead grooves 26 are arranged in parallel at intervals along the transverse direction. After the lead is placed in the lead groove 26, the positioning member 14 is used to position and fix the lead in the lead groove 26.

[0035] At both ends of the five lead placement positions 20 along the transverse direction of the jig base 12, first rubber particles 28 are respectively provided. The top surface of the first rubber particles 28 is flush with the surface where the notch of the wire pressing groove 24 is located, that is, the first plane 22. When placing the wire pressing 21, the part of the wire pressing 21 corresponding to the first rubber particles 28 is placed on the top surface of the first rubber particles 28, and the part of the wire pressing 21 corresponding to the first rubber particles 28 protrudes from the first plane 22. The first pressing member 16 presses on the part of the wire pressing corresponding to the first rubber particles. The first rubber particles 28 have a certain elastic deformation ability and have the effect of relieving the stress on the wire pressing. Under the pressing force of the first pressing member 16, the first rubber particles 28 undergo elastic contraction, and the wire pressing 21 undergoes a slight stretch, so that the part of the wire pressing 21 between the two first rubber particles 28 is straight and taut without breaking, thereby achieving the effect of improving the sensitivity of the lead welding part.

[0036] Further, second rubber particles 30 are also provided between two adjacent lead placement positions 20. The top surface of the second rubber particles 30 is flush with the surface where the notch of the wire pressing groove 24 is located. When placing the wire pressing 21, the part of the wire pressing 21 corresponding to the second rubber particles 30 is placed on the top surface of the second rubber particles 30, and the part of the wire pressing 21 corresponding to the second rubber particles 30 protrudes from the surface where the notch of the wire pressing groove 24 is located. The second pressing member 18 presses on the part of the wire pressing corresponding to the second rubber particles. The second rubber particles 30 have a certain elastic deformation ability and have the effect of relieving the stress on the wire pressing. Under the pressing force of the second pressing member 18, the second rubber particles 30 undergo elastic contraction, and the wire pressing 21 undergoes a slight stretch, so that the part of the wire pressing 21 corresponding to each lead placement position 20 is straight and taut without breaking, further improving the sensitivity of the lead welding part.

[0037] More specifically, in the illustrated embodiment, a sliding groove 32 is opened at the front end of the top side of the tooling table. The sliding groove 32 communicates with the lead groove 26 and the wire pressing groove 24. A boss 34 is formed between two adjacent lead placement positions 20. The boss 34 is located in the sliding groove 32. The wire pressing groove 24 is located on the side of the lead groove 26 facing the sliding groove 32, and there is a preset distance between the two.

[0038] The top surface of the boss 34 forms a second plane 36, which is lower than the first plane 22 in the height direction of the fixture base 12. The wire pressing groove 24 extends along a straight line, and the extension path of the wire pressing groove 24 passes through the first plane 22 and the second plane 36. In the height direction of the fixture base 12, the bottom surface of the part of the wire pressing groove 24 located on the first plane 22 is flush with the bottom surface of the part of the wire pressing groove 24 located on the second plane 36. Since the first plane 22 is higher than the second plane 36, the groove depth of the part of the wire pressing groove 24 located on the first plane 22 is greater than the groove depth of the part of the wire pressing groove 24 located on the second plane 36.

[0039] The first pressing member 16 is rotatably connected to the fixture base 12 to press or release the wire 21. When the first pressing member 16 presses the wire 21, the first pressing member 16 is fixed relative to the fixture base 12 through a fixing mechanism. Specifically, a pivot seat 38 is provided at the corner position of the first plane 22, a pivot shaft 40 is provided on the pivot seat 38, the pivot shaft 40 extends in the transverse direction, the first pressing member 16 includes a pivot portion 42, the pivot portion 42 is provided with a shaft hole 44, and the shaft hole 44 is inserted and matched with the pivot shaft 40, so that the pivot portion 42 is rotatably connected to the pivot seat 38, and further the first pressing member 16 can rotate relative to the fixture base 12. The fixing mechanism is, for example, a bolt. Screw holes are respectively provided at corresponding positions on the first pressing member 16 and the fixture base 12. When the first pressing member 16 rotates to the fixture base 12 and presses the wire 21, the first pressing member 16 is fixed relative to the fixture base 12 by using the screw connection between the bolt and the screw hole. Of course, in other embodiments, other fixing mechanisms can also be used to fix the first pressing member 16 relative to the fixture base 12.

[0040] In the shown embodiment, a first accommodation groove 46 is provided in the area of the first plane 22 where the wire pressing groove 24 is located. The extension path of the wire pressing groove 24 passes through the first accommodation groove 46. The first rubber particle 28 is accommodated in the first accommodation groove 46, and the top surface of the first rubber particle 28 is flush with the first plane 22.

[0041] Preferably, a pressing groove 48 is provided at the part of the first pressing member 16 corresponding to the first rubber particle 28. The aperture of the pressing groove 48 is slightly smaller than the aperture of the first accommodation groove 46. When the first pressing member 16 presses the corresponding wire part, the radial edge part of the pressing groove 48 presses on both ends of this part of the wire and presses on the first rubber particle 28. The first rubber particle 28 undergoes elastic contraction, and the wire 21 undergoes a slight stretch, so that the part of the wire 21 located between the two first rubber particles 28 is straight and taut without breaking.

[0042] In the shown embodiment, a second accommodation groove 50 is provided in the area of the second plane 36 where the wire pressing groove 24 is located. The extension path of the wire pressing groove 24 passes through the second accommodation groove 50. The second rubber particle 30 is accommodated in the second accommodation groove 50, and the top surface of the second rubber particle 30 is flush with the second plane 36.

[0043] More specifically, the second pressing member 18 includes a pressing main body portion 52 and a plurality of pressing arms 54 that extend outward from one side of the pressing main body portion 52 and are arranged at intervals. The ends of the pressing arms 54 extend a certain distance toward the bottom side of the pressing main body portion 52. When the second pressing member 18 presses the wire pressing portion corresponding to the second rubber particle 30, the pressing main body portion 52 is connected to the jig base 12. Each pressing arm 54 corresponds to a second rubber particle 30, and the bottom surface of the end of the pressing arm 54 presses on the portion of the wire pressing 21 corresponding to the second rubber particle 30. The pressing main body portion 52 can be fixed to the jig base 12 by screws. Under the pressing force of the plurality of pressing arms 54, the second rubber particle 30 undergoes elastic contraction, and the wire pressing 21 undergoes a slight stretch, so that the portion of the wire pressing 21 corresponding to each lead placement position 20 is straight and taut without breaking.

[0044] The positioning member 14 is used to position and fix the lead in the lead groove 26. In the illustrated embodiment, the positioning member 14 positions and fixes the lead in the lead groove 26 by means of a pressing force. Specifically, after the lead is placed in the lead groove 26, a part of the lead protrudes out of the lead groove 26. The positioning member 14 includes a positioning main body portion 56 and a plurality of positioning arms 58 that extend outward from one side of the positioning main body portion 56 and are arranged at intervals. The ends of the positioning arms 58 extend a certain distance toward the bottom side of the positioning main body portion 56. When the positioning member 14 positions and fixes the lead, the positioning main body portion 56 is connected to the jig base 12. Each positioning arm 58 corresponds to a lead placement position 20, and the bottom surface of the end of the positioning arm 58 presses on the protruding part of the lead, thereby realizing the positioning and fixing of the lead. The positioning main body portion 56 can be fixed to the jig base 12 by screws.

[0045] As Figure 1 shown, when both the positioning member 14 and the second pressing member 18 are installed on the jig base 12, the plurality of pressing arms 54 and the plurality of positioning arms 58 are arranged in an interlaced manner. In this embodiment, four pressing arms 54 are provided and five positioning arms 58 are provided.

[0046] It should be understood that in other embodiments, the positioning member 14 may also have other structural forms to realize the positioning and fixing of the lead, and the present application does not limit this.

[0047] In the illustrated embodiment, the sliding groove 32 is formed around the boss 34. After the lead is placed in the lead groove 26, one end of the lead extends into the sliding groove 32 to intersect with the wire pressing 21, thereby realizing welding at the intersection portion. In order to make the reserved lengths of the leads extending into the sliding groove 32 consistent, and thus improve the product quality and the yield rate, in this embodiment, the jig 10 further includes a movable limiting member 60, and the movable limiting member 60 is slidably disposed in the sliding groove 32.

[0048] Preferably, a fixing hole 62 is provided at the bottom of the slide groove 32, and a thread is provided on the inner wall of the fixing hole 62. A waist-shaped hole 64 is correspondingly provided on the movable stopper 60, and a bolt is passed through the waist-shaped hole 64 and the fixing hole 62, so that the movable stopper 60 can move in the slide groove 32 along the extension direction of the lead groove 26. When the movable stopper 60 moves to a preset position, the bolt is turned to be screwed and fixed with the thread in the fixing hole 62, so that the movable stopper 60 is fixed relative to the fixture seat 12. In other embodiments, the movable stopper 60 and the slide groove 32 can also be connected by other sliding mechanisms and fixing structures to realize the sliding and fixing of the movable stopper 60 in the slide groove 32.

[0049] The movable stopper 60 is designed to fit the shape of the slide slot 32. Specifically, the movable stopper 60 includes a stopper main body 66 and a plurality of stopper blocks 68 extending outward from one side of the stopper main body 66. The plurality of stopper blocks 68 are evenly spaced, and each stopper block 68 corresponds to a lead placement position 20. The area between two adjacent stopper blocks 68 forms an avoidance groove 70 for avoiding the boss 34. The end surface of the stopper block 68 opposite to the lead slot 26 is provided with a stopper groove 69. The stopper groove 69 runs through the top and bottom surfaces of the stopper block 68, and the intersection of the lead and the pressure wire 21 is located in the stopper groove 69, and a welding area is formed in the stopper groove 69. The end wall of the stopper groove 69 blocks the lead to limit it, so that the reserved length of the lead is consistent. The extension path of the wire pressing groove 24 passes through the movable stopper 60. Specifically, the extension path of the wire pressing groove 24 passes through a plurality of stopper blocks 68 and a plurality of avoidance grooves 70. The top surfaces of the plurality of stopper blocks 68 form a third plane 72. The extension path of the wire pressing groove 24 passes through the third plane 72. The width of the wire pressing groove 24 located at the third plane 72 is smaller than the width of the wire pressing groove 24 located at the first plane 22 and the second plane 36. The width of the wire pressing groove 24 located at the first plane 22 is equal to the width of the wire pressing groove 24 located at the second plane 36. Within the sliding stroke of the movable stopper 60, the wire pressing groove 24 is connected as a whole in the transverse direction. In other words, no matter how the movable stopper 60 slides in the slide groove 32, the wire pressing wire 21 placed in the wire pressing groove 24 can always remain extended in the transverse direction without distortion.

[0050] When the lead wire is placed in the lead wire groove 26, the position of the lead wire can be adjusted so that one end of the lead wire abuts against the end wall of the limiting groove 69, so that the reserved length of the lead wire extending out of the lead wire groove 26 is consistent, preventing the lead wire from being twisted and deformed to affect the welding effect.

[0051] Further, a limiting hole 74 may be provided at the end wall of the limiting groove 69 corresponding to the position of the lead. The aperture of the limiting hole 74 may be set to match the wire diameter of the lead. When adjusting the position of the lead, one end of the lead can be inserted into the limiting hole 74 and abutted against the end wall of the limiting hole 74, and the side wall of the lead is in contact with the inner wall of the limiting hole 74, increasing the frictional resistance. On the basis of ensuring that the reserved length of the lead is consistent, it can further prevent the lead from being distorted and deformed, improving the welding efficiency and the yield rate.

[0052] Please also refer to Figure 10 , the present application also provides an operation method of the above-mentioned small wire diameter lead welding positioning jig, including the following steps:

[0053] S1: Install the movable limiting member 60 in the sliding groove 32. According to the pre-designed reserved length of the lead, slide the movable limiting member 60 to adjust the preset distance, and fix the movable limiting member 60 relative to the jig base 12 by using bolts;

[0054] S2: Place the lead to be processed in the lead groove 26, and adjust the lead so that one end thereof extends into the limiting hole 74, and the end of the lead abuts against the end wall of the limiting hole 74. Then install the positioning member 14 on the jig base 12 and make the positioning arm 58 press on the lead to position and fix the lead, and fix the positioning member 14 on the jig base 12 by using screws;

[0055] S3: Place the first rubber particle 28 into the corresponding first accommodating groove 46, place the second rubber particle 30 into the corresponding second accommodating groove 50, and then straighten and place the wire pressing member 21 in the wire pressing groove 24;

[0056] S4: Rotate the first pressing member 16 to press the wire pressing part corresponding to the first rubber particle 28, so that the whole wire pressing member 21 is straight and taut, and then fix the first pressing member 16 relative to the jig base 12 by using bolts;

[0057] S5: Install the second pressing member 18 on the jig base 12, and make the pressing arm 54 press the wire pressing part corresponding to the second rubber particle 30, so that the part of the wire pressing member 21 corresponding to each lead placement position 20 is straight and taut, and then fix the second pressing member 18 relative to the jig base 12 by using screws;

[0058] S6: Use a welding tool, such as a laser welding device, to weld the intersection of the wire pressing member 21 and the lead to complete the welding operation.

[0059] It should be noted that the above operation method is obtained for the jig 10 illustrated in this application. This application does not limit this, and in other embodiments, the jig can also have other structural implementation forms, so there can be other corresponding operation methods. However, within the scope of the rights of this application, the jigs with other structural forms and their corresponding operation methods should all be covered within the scope of protection required by this application.

[0060] In summary, this application provides a positioning jig for welding small-diameter leads and its operation method. First rubber particles are respectively arranged at the positions at both ends of several lead placement positions. The first pressing member presses on the part of the wire corresponding to the first rubber particle. The first rubber particle has a certain elastic deformation ability and has the effect of relieving the stress on the wire. Under the pressing force of the first pressing member, the first rubber particle undergoes elastic contraction, and the wire undergoes a slight stretch, so that the part of the wire between the two first rubber particles is straight and taut without breaking, improving the sensitivity and welding efficiency of the lead welding part, and thus improving the yield rate. Similarly, a second rubber particle is arranged between two adjacent lead placement positions, and the second pressing member is used to press on the part of the wire corresponding to the second rubber particle, so that the part of the wire corresponding to each lead placement position is kept straight and taut without breaking, further improving the sensitivity and welding efficiency of the lead welding part and greatly improving the yield rate. The positioning jig for welding small-diameter leads of this application has a simple structure, is easy to manufacture, has a low cost, and its operation method is extremely simple, improving the processing efficiency, effectively improving the welding efficiency and yield rate, and the processed products have excellent quality.

[0061] The concepts described herein can be implemented in other forms without departing from their spirit and characteristics. The specific embodiments disclosed should be considered illustrative rather than restrictive. Therefore, the scope of this application is determined by the appended claims rather than by the previous descriptions. Any changes within the literal meaning and equivalent scope of the claims should fall within the scope of these claims.

Claims

1. A positioning jig for soldering small-diameter leads, characterized in that, it includes a jig base, a positioning member and a first pressing member. The jig base is provided with a plurality of lead placement positions at intervals along a transverse direction. Each lead placement position is provided with a lead groove for placing the lead. The positioning member is used to position and fix the lead in the lead groove. The jig base is further provided with a wire pressing groove for placing the wire pressing line along the transverse direction. The wire pressing line is pressed on the part of the lead extending out of the lead groove. At both ends of the plurality of lead placement positions of the jig base, first rubber particles are respectively provided. The top surface of the first rubber particle is flush with the surface where the notch of the wire pressing groove is located. The part of the wire pressing line corresponding to the first rubber particle is placed on the top surface of the first rubber particle. The first pressing member presses on the part of the wire pressing line corresponding to the first rubber particle. The first rubber particle has a certain elastic deformation ability. Under the pressing force of the first pressing member, the first rubber particle undergoes elastic contraction, and the wire pressing line undergoes a slight stretch, so that the part of the wire pressing line located between the two first rubber particles is straight and taut without breaking; a second rubber particle is provided between two adjacent lead placement positions. The top surface of the second rubber particle is flush with the surface where the notch of the wire pressing groove is located. The part of the wire pressing line corresponding to the second rubber particle is placed on the top surface of the second rubber particle. The jig further includes a second pressing member. The second pressing member presses on the part of the wire pressing line corresponding to the second rubber particle, so that the part of the wire pressing line corresponding to each lead placement position is straight and taut.

2. The positioning jig for soldering small-diameter leads according to claim 1, characterized in that, first accommodation grooves are respectively provided at both ends of the jig base corresponding to the first rubber particles. The extending path of the wire pressing groove passes through the first accommodation grooves. The first rubber particles are accommodated in the first accommodation grooves.

3. The positioning jig for soldering small-diameter leads according to claim 2, characterized in that, the first pressing member is rotatably connected to the jig base to press or release the wire pressing line. When the first pressing member presses the wire pressing line, the first pressing member is fixed relative to the jig base through a fixing mechanism.

4. The positioning jig for soldering small-diameter leads according to claim 3, characterized in that, a boss is formed between two adjacent lead placement positions. A second accommodation groove is provided on the boss. The extending path of the wire pressing groove passes through the second accommodation groove. The second rubber particles are accommodated in the second accommodation grooves.

5. The positioning jig for soldering small-diameter leads according to claim 4, characterized in that, the top surface of the second rubber particle is lower than the top surface of the first rubber particle.

6. The positioning jig for soldering small-diameter leads according to claim 5, characterized in that, a sliding groove is provided around the boss. The sliding groove is communicated with the lead groove. The jig further includes a movable limiting member. The movable limiting member is slidably arranged in the sliding groove. The extending path of the wire pressing groove passes through the movable limiting member. A limiting groove is provided on the part of the movable limiting member opposite to the lead groove. The end wall of the limiting groove stops the lead to limit it.

7. The positioning jig for welding of small-diameter leads as claimed in claim 6, characterized in that, limiting holes are provided on the end wall of the limiting groove corresponding to the lead groove.

8. The positioning jig for welding of small-diameter leads as claimed in claim 7, characterized in that, the width of the wire pressing groove in the part of the movable limiting member is smaller than the width of the wire pressing groove in the part of the jig base, and within the sliding stroke of the movable limiting member, the wire pressing groove penetrates in the lateral direction.

9. An operation method of a positioning jig for welding of small-diameter leads, characterized in that, providing a positioning jig for welding of small-diameter leads as claimed in claim 8, and the operation method comprises the following steps: S1: Install the movable limiting member in the sliding groove, and according to the pre-designed reserved length of the lead, slide the movable limiting member to adjust the preset distance and fix it; S2: Place the lead to be processed in the lead groove, and adjust the lead so that one end thereof extends into the limiting hole, and the end of the lead abuts against the end wall of the limiting hole, and then use the positioning member to position and fix the lead; S3: Put the first rubber particles into the corresponding first accommodating groove, put the second rubber particles into the corresponding second accommodating groove, and then place the wire to be pressed straight in the wire pressing groove; S4: Rotate the first pressing member to press the wire pressing part corresponding to the first rubber particles, so that the whole wire to be pressed is straight and taut, and then fix the first pressing member relative to the jig base; S5: Install the second pressing member on the jig base to press the wire pressing part corresponding to the second rubber particles, so that the part of the wire to be pressed corresponding to each lead placement position is straight and taut, and then fix the second pressing member relative to the jig base; S6: Use a welding tool to weld the intersection of the wire to be pressed and the lead to complete the welding operation.

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