Welding tool

Abstract

The utility model relates to a welding tool which comprises a bearing piece and a butt joint piece, the bearing piece is provided with a containing opening penetrating in the thickness direction of the bearing piece, the bearing piece comprises a first limiting part spaced from the containing opening, and the bearing piece is configured to be arranged on one side of a first welding piece and connected with the first welding piece through the first limiting part; the bearing piece and the first welding piece are relatively static; the butt-joint piece is provided with a connecting hole penetrating in the thickness direction of the butt-joint piece, the butt-joint piece comprises a second limiting part spaced from the connecting hole, and the butt-joint piece is arranged on the side, away from the first welding piece, of the bearing piece and is connected with the bearing piece through the second limiting part, so that the butt-joint piece and the bearing piece are relatively static; the connection hole is configured to allow insertion of the probe. According to the welding tool provided by the embodiment of the utility model, the welding and positioning accuracy of the needle seat can be improved, and the inclination degree of the needle seat is restrained, so that the connection reliability of a welding layer at the bottom of the needle seat is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to welding technical field especially relates to a kind of welding tool. BACKGROUND

[0002] Pin seat is a kind of commonly used structure in semiconductor power module, and pin seat soldering is suitable for small-batch customized production mode due to its flexibility and controllability and weak dependence on equipment. Accurate pin seat positioning control and consistent controllable solder control are the key to pin seat soldering.

[0003] In the current mass-produced products, the solder in the pin seat welding step is printed to the pin seat pad position by steel mesh, and after the chip position is fixed by one-time welding, pin seat welding is completed again at the one-time solder melting point, thereby completing the pin seat soldering process.

[0004] However, due to the good fluidity of the solder when melting, the pin seat structure with high gravity center often tilts or deviates during the welding process, thereby causing the reliability failure of the solder layer and failing to achieve effective welding of the pin seat. SUMMARY

[0005] The utility model embodiment provides a kind of welding tool, which can improve the accuracy of pin seat welding positioning, constrain the degree of pin seat inclination, and thereby ensure the reliability of pin seat bottom solder layer connection.

[0006] According to the welding tool provided in the embodiment of the utility model, the bearing piece has a receiving opening penetrating along the thickness direction thereof, and the bearing piece includes a first limiting portion spaced apart from the receiving opening, the bearing piece is configured to be arranged on one side of the first welding piece and connected with the first welding piece through the first limiting portion, so that the bearing piece and the first welding piece are relatively stationary;The butt joint piece has a connecting hole penetrating along the thickness direction thereof, and the butt joint piece includes a second limiting portion spaced apart from the connecting hole, the butt joint piece is configured to be arranged on the side of the bearing piece away from the first welding piece and connected with the bearing piece through the second limiting portion, so that the butt joint piece and the bearing piece are relatively stationary, and the connecting hole is configured to allow the probe to be inserted;Wherein, the first welding piece and the butt joint piece can close the receiving opening to form a receiving cavity, the second welding piece can be arranged in the receiving cavity and welded with the first welding piece, and the probe can be welded with the second welding piece in the receiving cavity.

[0007] According to an aspect of the embodiment of the present application, the welding tool includes a fixing member, the fixing member includes a through hole extending in the thickness direction, the fixing member can be arranged on the side of the butt joint member away from the carrier, the through hole is arranged corresponding to the connecting hole in the thickness direction, and the through hole is configured to allow the probe to be inserted to fix the probe by the fixing member.

[0008] According to an aspect of the embodiment of the present application, the connecting hole includes a circular hole, the diameter of the connecting hole is greater than the diameter of the probe, and the difference between them is 0.1-0.2mm.

[0009] According to an aspect of the embodiment of the present application, the fixing member includes a block structure with plasticity, and the normal projection of the fixing member in the thickness direction covers at least the connecting hole.

[0010] According to an aspect of the embodiment of the present application, the butt joint member has a plurality of connecting holes, the plurality of connecting holes are arranged at intervals, and the fixing member has a plurality of through holes corresponding to the connecting holes.

[0011] According to an aspect of the embodiment of the present application, the first limiting part includes a first limiting protrusion, the carrier includes a first body part and the first limiting protrusion, the first limiting protrusion is arranged protruding from the first body part in the thickness direction, and the first limiting protrusion can be inserted into the first hole position of the first welding member to connect the carrier and the first welding member.

[0012] According to an aspect of the embodiment of the present application, the carrier includes a plurality of first limiting protrusions, and the plurality of first limiting protrusions are arranged at intervals along the circumference of the first body part.

[0013] According to an aspect of the embodiment of the present application, the second limiting part includes a second limiting protrusion, the butt joint member includes a second body part and the second limiting protrusion, the second limiting protrusion is arranged protruding from the second body part in the thickness direction, the carrier is provided with a second hole position corresponding to the second limiting protrusion, and the second limiting protrusion can be inserted into the second hole position to connect the butt joint member and the carrier.

[0014] According to an aspect of the embodiment of the present application, the extension length of the connecting hole in the thickness direction is greater than two-thirds of the length of the probe.

[0015] According to an aspect of the embodiment of the present application, the butt joint piece comprises a first butt joint plate and a second butt joint plate, the first butt joint plate and the second butt joint plate are respectively provided with the connecting holes corresponding in the thickness direction, and the first butt joint plate and the second butt joint plate can be arranged at intervals in the thickness direction so that the probes are respectively inserted into the connecting holes of the first butt joint plate and the second butt joint plate.

[0016] The embodiment of the present application provides a welding tool, the bearing part is arranged on the first welding part, the butt joint part is arranged on the bearing part, the bearing part is closed by the first welding part and the butt joint part, a closed containing cavity is formed, the second welding part is arranged in the containing cavity and is welded with the first welding part, the position of the second welding part is limited by the containing cavity, welding failure caused by the position deviation of the second welding part in the welding process is prevented. BRIEF DESCRIPTION OF DRAWINGS

[0017] The features, advantages and technical effects of the exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0018] Figure 1 is a structural schematic view of a welding tool of the embodiment of the present application;

[0019] Figure 2 is a top view of a welding tool of the embodiment of the present application;

[0020] Figure 3 is a top view of a bearing part of the embodiment of the present application;

[0021] Figure 4 is an exploded view of a welding tool of the embodiment of the present application;

[0022] Figure 5 is an exploded view of another welding tool of the embodiment of the present application.

[0023] Reference signs:

[0024] 100-welding tool; 200-first welding part; 300-second welding part; 400-probe; 500-solder; 1-first hole position; 2-second hole position;

[0025] 10-carrier; 11-receiving opening; 12-first limiting portion; 13-first body portion; 20-abutment; 21-connecting hole; 22-second limiting portion; 23-second body portion; 24-first abutment plate; 25-second abutment plate; 30-fixing member; 31-penetration hole.

[0026] In the drawings, the same components are designated by the same reference numerals. The drawings are not drawn to scale. DETAILED DESCRIPTION

[0027] Features and exemplary embodiments of various aspects of the present application will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one of ordinary skill in the art that the present application can be practiced without some or all of these specific details. The description of the embodiments is merely illustrative of the present application and is not intended to limit the present application, as is apparent to one of ordinary skill in the art. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one of ordinary skill in the art that the present application can be practiced without some or all of these specific details. In other instances, well known structures and functions have not been described in detail in order to avoid obscuring the present application. Also, the description is not to be considered limiting in any way, but rather, the scope of the present application is defined by the appended claims. In addition, features described in one example embodiment can be incorporated into another example embodiment.

[0028] The orientation words appearing in the following description are the directions shown in the drawings, and do not limit the specific structure of the welding tool of the present application. In the description of the present application, it should be further explained that, unless otherwise explicitly specified and limited, the terms "mounting" and "connecting" should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or integrally connected; can be directly connected, or can be indirectly connected. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0029] In order to better understand the present application, the following will be described in conjunction with Figures 1 to 5 The welding tool of the embodiment of the present application is described in detail.

[0030] Please refer to Figures 1 to 3The utility model embodiment proposes a kind of welding tool 100, including bearing 10 and butt joint 20, bearing 10 has the accommodating opening 11 being set through along the thickness direction of itself, bearing 10 includes the first limiting portion 12 being set apart with accommodating opening 11, bearing 10 is configured as being set to the side of first welding piece 200 and is connected with first welding piece 200 by first limiting portion 12, to make bearing 10 and first welding piece 200 relatively stationary;Butt joint 20 has the connecting hole 21 being set through along the thickness direction of itself, butt joint 20 includes the second limiting portion 22 being set apart with connecting hole 21, butt joint 20 is configured as being set to the side of bearing 10 away from first welding piece 200 and is connected with bearing 10 by second limiting portion 22, to make butt joint 20 and bearing 10 relatively stationary, connecting hole 21 is configured as allowing probe 400 to be inserted;Wherein, first welding piece 200 and butt joint 20 can close accommodating opening 11 to form accommodating cavity, second welding piece 300 can be set in accommodating cavity and is welded with first welding piece 200, probe 400 can be welded with second welding piece 300 in accommodating cavity.

[0031] Optionally, bearing 10 can adopt plate structure, accommodating opening 11 is opened on bearing 10, and the size of the accommodating opening 11 needs to be substantially greater than the size of second welding piece 300, so that second welding piece 300 can be placed in accommodating opening 11, to avoid size mismatch.

[0032] To form accurate welding of first welding piece 200 and second welding piece 300, first of all, the positional relationship between the two needs to be ensured, second welding piece 300 needs to be welded on first welding piece 200, in order to prevent second welding piece 300 from shifting relative to first welding piece 200 during welding, bearing 10 is placed on first welding piece 200, first limiting portion 12 on bearing 10 can be used to stabilize itself on first welding piece 200, and the two remain relatively stationary, so that after second welding piece 300 is placed in accommodating opening 11, accommodating opening 11 can limit the position of second welding piece 300, to prevent relative displacement between the two during welding, and finally make first welding piece 200 and second welding piece 300 form accurate and reliable welding, wherein solder 500 needs to be printed on first welding piece 200 in advance at accommodating opening 11, to prepare for welding.

[0033] The utility model discloses the specific structure of first limiting portion 12 is not specially limited, can ensure the detachable connection between bearing 10 and first welding piece 200 can, can prevent the movement between both can, and first welding piece 200 can be heat sink bottom plate, second welding piece 300 can be ceramic substrate, first limiting portion 12 can cooperate with the bolt hole of first welding piece 200 itself can, improve the stability of bearing 10 on first welding piece 200.

[0034] Optionally, the connecting hole 21 is arranged on the docking piece 20, in order to accurately weld the probe 400 and the second welding piece 300, the probe 400 can be inserted into the connecting hole 21, and the process can be completed by a needle inserting machine, then the docking piece 20 can be inverted as a whole and placed on the bearing 10, so that the containing opening 11 on the bearing 10 is closed to form a containing cavity, the probe 400 is inverted in the containing cavity and can be welded with the second welding piece 300 in the cavity, wherein, the steel mesh printing solder 500 needs to be printed on the second welding piece 300 in the containing cavity in advance, so as to prepare for welding the probe 400.

[0035] The second limiting portion 22 on the docking piece 20 can be limitedly matched with the bearing 10, so that the relative static state between the two is maintained, the position deviation in the welding process is avoided, and the position accuracy of the probe 400 inserted into the docking piece 20 is ensured. The docking piece 20 can constrain the position of the probe 400, and the position accuracy of the probe 400 relative to the second welding piece 300 is improved. At this time, the probe 400 needs to be separated from the connecting hole 21 and fall to the solder 500 on the second welding piece 300 in the containing cavity, so as to be welded.

[0036] Similarly, the specific structure of the second limiting portion 22 is not specially limited, and the detachable connection between the docking piece 20 and the bearing 10 can be ensured, and the movement between the two can be prevented. The welding method has various types, and the specific welding method is not specially limited.

[0037] The utility model discloses an embodiment provides a kind of welding tool 100, by being set to first welding piece 200 on the bearing 10 and being set to butt joint piece 20 on the bearing 10, using first welding piece 200 and butt joint piece 20 will the containing opening 11 of bearing 10 be closed arrangement, form closed containing cavity, second welding piece 300 is set in containing cavity and is welded with first welding piece 200, the position of containing cavity to second welding piece 300 has been limited, to prevent the welding failure caused by the position deviation of second welding piece 300 in welding process.Simultaneously, using the connecting hole 21 of butt joint piece 20 is inserted with probe 400, so that probe 400 can enter containing cavity and be welded with second welding piece 300, butt joint piece 20 can form control restraint to probe 400, ensure the accuracy of the position of probe 400 in welding process, prevent the emergence of position deviation and probe 400 inclination and other adverse phenomena, realize the effective welding between probe 400 and second welding piece 300, finally improve the reliability of overall welding process.

[0038] As an optional embodiment, please refer to Figure 1 Welding tool 100 includes fixed part 30, fixed part 30 includes the through hole 31 extending in thickness direction, fixed part 30 can be set to the side of butt joint piece 20 away from bearing 10, through hole 31 is set in thickness direction with connecting hole 21, through hole 31 is configured to allow probe 400 to be inserted so that fixed part 30 fixes probe 400.

[0039] Optionally, when probe 400 is inserted in connecting hole 21 of butt joint piece 20, fixed part 30 can be set on butt joint piece 20, and fixed part 30 has through hole 31 corresponding to connecting hole 21, when probe 400 gradually passes through connecting hole 21, it will gradually be inserted into through hole 31, and fixed part 30 can further fix and restrain the end of probe 400, ensuring the stability of probe 400 after insertion, preventing probe 400 from falling arbitrarily after inversion.

[0040] Optionally, fixed part 30 can have various structural forms, and the utility model does not limit the specific structure of fixed part 30, as long as it can have through hole 31 and allow probe 400 to be inserted into through hole 31 to form fixation.

[0041] For through hole 31 on fixed part 30, it can be pre-formed on fixed part 30, or it can be a hole structure formed by pushing in during the insertion of probe 400, and the utility model does not limit this, and optionally, through hole 31 on fixed part 30 can have a certain shrinkage, so that fixed part 30 can be used multiple times to accommodate probes 400 of different diameters, and through hole 31 can satisfy the insertion of probes 400 of various models.

[0042] When the probe 400 needs to be welded with the second welding piece 300 in the accommodating cavity, the fixing piece 30 can be removed, so that the probe 400 is separated from the penetrating hole 31, and at this time, the probe 400 can be separated from the connecting hole 21 to the solder 500 of the second welding piece 300, so as to realize accurate welding with the second welding piece 300.

[0043] The utility model embodiment provides a kind of welding tool 100, by being provided with fixed piece 30 on butt joint 20 and using penetrating hole 31 and connecting hole 21 form butt joint, fixed piece 30 can be fixed to the end of probe 400, prevent the falling of probe 400 in the process of turning butt joint 20, improve the stability of the fixed probe 400, provide reliable guarantee for subsequent probe 400 and the accurate butt joint of second welding piece 300.

[0044] As an optional embodiment, please refer to Figure 2 Connecting hole 21 includes round hole, and the aperture of connecting hole 21 is greater than the diameter of probe 400, and the difference between them is 0.1-0.2mm.

[0045] In the embodiment, the aperture of connecting hole 21 is appropriately enlarged, so that the aperture of connecting hole 21 is slightly larger than the diameter of probe 400, while limiting the inclination of probe 400 using connecting hole 21, the problem of difficult demolding after reflow is avoided, so that probe 400 is easily separated from butt joint 20 to complete drop welding, and the aperture value of connecting hole 21 is not specially limited in the utility model.

[0046] The utility model embodiment provides a kind of welding tool 100, by limiting the aperture of connecting hole 21 is greater than the diameter of probe 400, so that probe 400 is facilitated to enter into connecting hole 21 in the process of inserting, simultaneously, when connecting hole 21 is restrained in the position of probe 400, the falling of probe 400 during welding is also facilitated to complete, so as to easily realize the welding process of probe 400.

[0047] As an optional embodiment, please refer to Figure 1 Fixed piece 30 includes block structure with plasticity, and the orthographic projection of fixed piece 30 in thickness direction covers at least connecting hole 21.

[0048] Optionally, fixed piece 30 can adopt plastic foamed organic material, such as polystyrene, Teflon, etc., and the specific material of fixed piece 30 is not specially limited in the utility model, so that fixed piece 30 has certain plasticity.

[0049] When the probe 400 is gradually inserted into the fixing part 30, the fixing part 30 is gradually plastically deformed and a through hole 31 is generated to bind the end of the probe 400, thereby achieving further fixation of the probe 400, and since there may be a certain gap between the probe 400 and the connecting hole 21, there is a risk of the probe 400 falling off, so the fixing part 30 in the embodiment can better prevent the probe 400 from falling off before welding.

[0050] When welding, the fixing part 30 can be removed, so that the probe 400 loses fixation and falls towards the second welding part 300, has a precise positional relationship with the second welding part 300, and finally completes the welding process.

[0051] The utility model embodiment provides a kind of welding tool 100, by being set as plastic block structure to fixing part 30, using its plastic deformation can provide more stable binding force for probe 400, form reliable fixation to probe 400, simultaneously, it is convenient to remove fixing part 30 to complete subsequent welding process.

[0052] As an optional embodiment, please refer to Figure 2 The connecting part 20 has a plurality of connecting holes 21, and the fixing part 30 has a plurality of through holes 31 corresponding to the connecting holes 21.

[0053] The utility model does not specially limit the number of connecting holes 21 and through holes 31, which needs to be determined according to the actual number of probes 400 to be welded, and at the same time needs to ensure that the connecting holes 21 and the through holes 31 correspond one by one, so as to prevent the hole position from shifting and causing the probe 400 to be unable to be effectively inserted.

[0054] During welding, since a plurality of probes 400 are simultaneously inserted into the connecting holes 21 and the through holes 31, they can be simultaneously flipped, so that the plurality of probes 400 are simultaneously inverted, and then the fixing part 30 is removed, so that the plurality of probes 400 simultaneously lose the binding force and fall from the connecting holes 21 onto the second welding part 300, each probe 400 is in a predetermined position, ensuring the positional docking accuracy, and the welding process is synchronized, avoiding welding the probes 400 one by one.

[0055] The utility model embodiment provides a kind of welding tool 100, by simultaneously inserting a plurality of probes 400 into the connecting part 20, the simultaneous welding of a plurality of probes 400 can be realized, which improves the welding accuracy and also improves the welding efficiency, reducing the labor of repeated manual operation.

[0056] As an optional embodiment, please refer to Figure 4The first limiting part 12 comprises a first limiting protrusion, the bearing 10 comprises a first body part 13 and the first limiting protrusion, the first limiting protrusion is arranged to protrude from the first body part 13 in the thickness direction, and the first limiting protrusion can be inserted into the first hole position 1 of the first welding part 200 to connect the bearing 10 with the first welding part 200.

[0057] Optionally, the first limiting protrusion can be inserted into the first hole position 1 on the first welding part 200 in a plug-fit manner, thereby restricting the movement of the bearing 10 relative to the first welding part 200, the first hole position 1 on the first welding part 200 can be a pin through hole provided by itself, and the insertion of the first limiting protrusion into the first hole position 1 can realize the fixation of the bearing 10 and prevent the position offset during welding.

[0058] Optionally, the first limiting protrusion can be integrally formed with the first body part 13 and can be processed by a computer digitized precision machining process, so as to form the overall structure of the bearing 10, or the first limiting protrusion can be separately pressed into the corresponding hole position, thereby saving the processing cost and reducing the processing deformation.

[0059] Optionally, the first limiting protrusion can adopt a cylindrical protrusion, and the corresponding first hole position 1 adopts a circular hole, and the specific shape is not specially limited in the utility model, and the fixation of the bearing 10 can be met.

[0060] The embodiment of the utility model provides a kind of welding tool 100, provide a kind of bearing 10 relative to the limiting mode of first welding part 200, utilize protrusion structure cooperation through-hole, while completing limiting and improving structural stability, also facilitate the processing forming of bearing 10 etc.

[0061] As an optional embodiment, please refer to Figure 4 The bearing 10 comprises a plurality of first limiting protrusions, and the plurality of first limiting protrusions are arranged at intervals along the circumference of the first body part 13.

[0062] To further improve the welding stability of the bearing 10 on the first welding part 200, a plurality of first limiting protrusions can be arranged at intervals along the circumference of the first body part 13, and correspond to a plurality of first hole positions 1 on the first welding part 200, so that the plurality of first limiting protrusions are inserted one by one, so that the bearing 10 has better balance stability on the first welding part 200, and the fixing capacity of the bearing 10 is improved.

[0063] The specific number of the first limiting protrusion is not specially limited in the utility model, and can be determined according to actual welding stability requirements, and can be manufactured by corresponding precision forming process.

[0064] The embodiment of the utility model provides a kind of welding tool 100, by being provided with multiple first limiting protrusions on the circumference of first body part 13, so that the insertion of carrier 10 and first welding piece 200 has higher stability, the positional relationship between the both is more stable and reliable, further prevents the relative deviation between the both, provides guarantee for subsequent accurate welding.

[0065] As an optional embodiment, please refer to Figure 4 Second limiting part 22 includes second limiting protrusion, and docking piece 20 includes second body part 23 and second limiting protrusion, and second limiting protrusion is arranged to protrude from second body part 23 in thickness direction, second hole site 2 corresponding to second limiting protrusion is arranged on carrier 10, and second limiting protrusion can be inserted into second hole site 2 to connect docking piece 20 with carrier 10.

[0066] In the embodiment, the reliable connection between docking piece 20 and carrier 10 is considered, second limiting protrusion is arranged on the second body part 23 of docking piece 20, and second limiting protrusion can be a positioning pin structure, and second hole site 2 arranged on carrier 10 can be a through-hole structure, second limiting protrusion is inserted into second hole site 2 to realize the relative fixation between docking piece 20 and carrier 10.

[0067] Optionally, second limiting protrusion can be integrally formed with second body part 23, and can be processed by computer digital precision machining process and the like, so as to form the overall structure of carrier 10, or second limiting protrusion can be pressed into corresponding hole site by being separate, to save processing cost and reduce processing deformation.

[0068] Optionally, second limiting protrusion can adopt cylindrical protrusion in the drawing, and corresponding second hole site 2 adopts round hole, and the utility model does not specially limit specific shape, and can meet the fixing needs of docking piece 20 and carrier 10.

[0069] The embodiment of the utility model provides a kind of welding tool 100, provides a kind of limiting mode of docking piece 20 relative to carrier 10, utilizes protrusion structure cooperation through-hole, is also convenient for completing the processing forming of carrier 10 and docking piece 20 and the like components while completing limiting and improving structural stability, with better production efficiency.

[0070] As an optional embodiment, please refer to Figure 1 The extension length of connecting hole 21 in thickness direction is greater than two-thirds of the length of probe 400.

[0071] The utility model embodiment provides a kind of welding tool 100, by the extension length of limiting connecting hole 21, while guaranteeing enough long to the limited part of probe 400, to control the extreme tilt angle of probe 400 further, provide sufficient guarantee for the effective welding of probe 400, form sufficient restraint to it, further prevent the tilt and deviation etc.

[0072] As an alternative embodiment, please refer to Figure 5 The docking piece 20 includes a first docking plate 24 and a second docking plate 25, and the first docking plate 24 and the second docking plate 25 are respectively provided with corresponding connecting holes 21 in the thickness direction. The first docking plate 24 and the second docking plate 25 can be arranged in the thickness direction to allow the probe 400 to be inserted into the connecting holes 21 of the first docking plate 24 and the second docking plate 25, respectively.

[0073] Alternatively, the docking piece 20 can also be provided as two first docking plates 24 and second docking plates 25 spaced apart in the thickness direction, that is, two plate structures. The probe 400 can be sequentially inserted into the connecting holes 21 of the first docking plate 24 and the second docking plate 25 in the thickness direction, thereby restraining the probe 400.

[0074] Due to the difficulty in processing the docking piece 20 caused by the excessive length of the probe 400, the docking piece 20 can be further disassembled into a multi-layer structure, such as the first docking plate 24 and the second docking plate 25 structure. The layered structure can effectively improve the process material consumption and overall heat capacity of the docking piece 20, but the assembly difficulty and size precision control effect are not as good as that of a single-layer structure, and need to be selected according to actual requirements.

[0075] The utility model embodiment provides a kind of welding tool 100, by setting the docking piece 20 as two laminated plate structures, another structure form of docking piece 20 is provided, on the basis of ensuring that the probe 400 is inserted and fixed, the process forming difficulty of component is reduced, which is conducive to reducing production manufacturing cost.

[0076] The utility model discloses a kind of welding tool, by being set to first welding piece on the bearing and being set to butt joint piece on bearing, using first welding piece and butt joint piece to close the containing opening of bearing and form closed containing cavity, second welding piece is set in containing cavity and is welded with first welding piece, the position of second welding piece is limited by containing cavity, to prevent the welding failure caused by the position deviation of second welding piece in welding process. Meanwhile, using the connecting hole of butt joint piece to insert probe, so that probe can enter containing cavity and be welded with second welding piece, butt joint piece can form control restraint to probe, ensure the accuracy of probe position in welding process, prevent the occurrence of position deviation and probe inclination and other adverse phenomena, realize the effective welding between probe and second welding piece, finally improve the reliability of overall welding process.

[0077] Although the utility model has been described with reference to the preferred embodiments, various modifications can be made to it and components therein can be replaced with equivalents without departing from the scope of the utility model. In particular, each of the technical features mentioned in each of the embodiments can be combined in any manner as long as there is no structural conflict. The utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A welding fixture, characterized by, The welding tool includes a fixing member, the fixing member includes a through hole extending in the thickness direction, the fixing member can be arranged on the side of the docking member away from the bearing member, the through hole is arranged corresponding to the connecting hole in the thickness direction, and the through hole is configured to allow the probe to be inserted so that the fixing member fixes the probe. The connecting hole includes a circular hole, the diameter of the connecting hole is greater than the diameter of the probe, and the difference between them is 0.1-0.2mm. The fixing member includes a block structure with plasticity, and the normal projection of the fixing member in the thickness direction covers at least the connecting hole. The docking member has a plurality of connecting holes, and the plurality of connecting holes are arranged at intervals from each other, and the fixing member has a plurality of through holes corresponding to the connecting holes.

2. The welding fixture of claim 1, wherein, The first limiting part includes a first limiting protrusion, the bearing member includes a first body part and the first limiting protrusion, the first limiting protrusion is arranged protruding from the first body part in the thickness direction, and the first limiting protrusion can be inserted into a first hole position of the first welding member to connect the bearing member and the first welding member.

3. The welding fixture of claim 2, wherein, The bearing member includes a plurality of first limiting protrusions, and the plurality of first limiting protrusions are arranged at intervals from each other along the circumference of the first body part.

4. The welding fixture of claim 2, wherein, The second limiting part includes a second limiting protrusion, the docking member includes a second body part and the second limiting protrusion, the second limiting protrusion is arranged protruding from the second body part in the thickness direction, the bearing member is provided with a second hole position corresponding to the second limiting protrusion, and the second limiting protrusion can be inserted into the second hole position to connect the docking member and the bearing member.

5. The welding fixture of claim 4, wherein, The connecting hole has an extension length in the thickness direction greater than two-thirds of the length of the probe.

6. The welding fixture of claim 1, wherein, ​ 7. The welding fixture of claim 6, wherein, ​ 8. The welding fixture of claim 1, wherein, ​ 9. The welding fixture of claim 1, wherein, ​ 10. The welding fixture of claim 1, wherein, The docking piece comprises a first docking plate and a second docking plate, and the first docking plate and the second docking plate are respectively provided with the connecting holes corresponding in the thickness direction, and the first docking plate and the second docking plate can be arranged at intervals in the thickness direction so that the probes are respectively inserted into the connecting holes of the first docking plate and the second docking plate.

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