A metal part welding tool with lead positioning

Abstract

The application provides a metal piece welding tool with a lead positioning function, relates to the field of welding instruments, and comprises a first welding tool for manufacturing a lead part and a second welding tool; the second welding tool has a containing cavity inside, a structure composed of metal pieces is in the containing cavity, and the lead part is fixedly combined with the metal pieces in the containing cavity, in the application, the cooperation of the transition ring and the pressing block enables the solder flow to have directionality, effectively avoiding the overflow of the solder to contaminate non-welding areas, in addition, the welding mode with pressure can guarantee the welding reliability and sealing effect, in addition, the linkage design of the second welding tool and the pressing mechanism ensures the position synchronization during the assembly of multiple components, and effectively improves the welding quality.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of welding apparatus, in particular to a metal piece welding tool with lead positioning. BACKGROUND

[0002] The current metal piece welding scheme with lead adopts a two-stage process. In the process, the ceramic strip, transition ring and solder are assembled by lead positioning, fixed by the lower tool, covered by the flat head-shaped upper tool, and then the whole assembly is formed by brazing. Subsequently, the assembly is welded with the metal piece for the second time. According to feedback, the flat head assembly fixing process in the existing scheme is difficult, time-consuming in operation, and the processing difficulty of the tool is large. After welding, the pores of the transition ring and the ceramic strip are prone to weld or uneven solder, which may cause gas leakage and other problems. In addition, the solder is difficult to fix in the second step of welding, and the disassembly problem caused by thermal expansion deformation cannot be ignored. In view of the above situation, a metal piece welding tool with lead positioning is designed. SUMMARY

[0003] The purpose of the present application is to provide a metal piece welding tool with lead positioning to solve the problems of flat head assembly fixing, transition ring and ceramic strip pores prone to weld or uneven solder, which may cause gas leakage and other problems. In addition, it is also necessary to solve the technical problems of solder fixation difficulty in the second step of welding and disassembly difficulty caused by thermal expansion deformation.

[0004] To solve the above technical problems, the following technical solutions are adopted:

[0005] A metal piece welding tool with lead positioning, comprising a first welding tool for making a lead part, and a second welding tool.

[0006] The second welding tool has a containing chamber inside, and the structure of the metal piece is in the containing chamber. The lead part penetrates into the containing chamber and is fixedly combined with the metal piece.

[0007] Preferably, the first welding tool includes a first base with a plurality of grooves. The grooves are a first groove and a second groove from top to bottom, and a flat head groove below the second groove. The second groove is used to put the ceramic strip, and the ceramic strip has a plurality of perforations. Each first lead penetrates from the corresponding perforation and extends downward. The downward extending part is a first lead flat head part, and the first lead flat head part enters the flat head groove.

[0008] The first welding tool further includes a first pressing block and a second pressing block corresponding to the number and spacing of the perforations. The first pressing block and the second pressing block are stacked in the height direction and penetrate the first lead downward into the first groove.

[0009] Preferably, each of the perforations is provided with a transition ring sleeved on the first lead wire, and the transition ring is surrounded by solder, and the first pressing block and the second pressing block press the transition ring.

[0010] Preferably, the first lead wire is provided with an expansion surface at the junction with the first lead wire head, and the expansion surface covers the bottom of the second groove, so that the combination of the first lead wire and the first lead wire head does not fall downward.

[0011] Preferably, the second soldering tool comprises a second base, and the second base is internally provided with an open space, and the second base is further provided with a surrounding fence, the base enters the open space, and the base is limited in the open space, and the ring frame enters the open space, and the second soldering tool further comprises a first stop block and a second stop block located on both sides of the ring frame, the first stop block and the second stop block constrain the ring frame, so that the ring frame is attached to the solder at the base, and the second soldering tool further comprises a third pressing block, and the third pressing block covers the ring frame.

[0012] Preferably, the combination of the first lead wire, the first lead wire head, the ceramic strip and the transition ring penetrates through the ring frame and extends into the ring frame.

[0013] Preferably, the area where the third pressing block covers the ring frame is provided with an extension structure extending downward into the ring frame, and the extension structure is used to constrain the part of the combination entering the ring frame.

[0014] Preferably, the extension structure to the main body of the third pressing block has a space stop, and the space stop is used to pull out the extension structure from the combination

[0015] The beneficial effects of the present application are:

[0016] In the present application, the cooperation between the transition ring and the pressing block makes the solder flow directional, effectively avoiding the pollution of the non-soldering area caused by the overflow of the solder, in addition, the soldering method with pressure can ensure the reliability of the soldering and the sealing effect, in addition, the linkage design between the second soldering tool and the pressing mechanism ensures the position synchronization during the assembly of multiple components, effectively improving the welding quality. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structure schematic view of the first soldering tool for manufacturing the lead wire part;

[0018] Figure 2 It is a structure schematic view of the first soldering tool for manufacturing the lead wire part; Figure 1 It is a sectional view of the first working;

[0019] Figure 3 It is a structure schematic view of the first soldering tool for manufacturing the lead wire part;

[0020] Figure 4 It is a structure schematic view of the first soldering tool for manufacturing the lead wire part;

[0021] Figure 5 It is a structure schematic view of the first soldering tool for manufacturing the lead wire part; Figure 4A top view of the second welder shown;

[0022] Figure 6 For Figure 5 A structural schematic diagram of the second welder shown after removing the top structure of the ring frame;

[0023] Figure 7 For Figure 6 A structural schematic diagram of the second welder shown after removing the structure on both sides of the ring frame;

[0024] Figure 8 A structural schematic diagram of a metal piece with lead positioning;

[0025] The reference signs: 1, first base; 2, first groove; 3, second groove; 4, flat head groove; 5, first pressing block; 6, second pressing block; 7, first lead; 8, first lead flat head; 9, ceramic strip; 10, transition ring; 11, second base; 12, third pressing block; 13, fourth pressing block; 14, first stop block; 15, second stop block; 16, ring frame; 17, bottom plate; 18, protrusion; 19, second lead. DETAILED DESCRIPTION

[0026] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application herein are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0028] The specific embodiments of the present application will be described below with reference to the accompanying drawings.

[0029] Example 1

[0030] In this embodiment, a metal piece with lead positioning welding tool is proposed, please refer to Figure 1 and Figure 8 The welding tool is composed of a first welding tool and a second welding tool, which solves the technical problems such as large lead positioning deviation, difficult multi-process connection, unstable welding quality and the like in the traditional welding process through modular design. Among them, the first welding tool is mainly responsible for the pre-forming and preliminary fixing of the lead part, and the second welding tool is responsible for the final assembly and welding of the metal piece and the lead part. The two tools form a complete process chain through specific structural cooperation, which significantly improves the production efficiency while ensuring the welding precision.

[0031] Please refer to Figures 1-3 , the core structure of the first welding tooling includes a first base 1 with multiple stepped grooves, wherein the first base 1 adopts a layered design, and a first groove 2, a second groove 3 and a flat head groove 4 are sequentially arranged from top to bottom to form a three-level positioning structure. The second groove 3 is used to support a ceramic strip 9 with precise perforations, which serves as a positioning reference for the first lead 7. The number and spacing of the perforations are customized according to product design requirements. Each perforation corresponds to a first lead 7, and the portion of the first lead 7 after passing through the perforation is a first lead flat head 8 that extends downward to the flat head groove 4. The geometric size of the first lead flat head 8 is accurately matched with the flat head groove 4 to achieve preliminary positioning. To ensure the perpendicularity and positional accuracy of the lead portion, a laminated pressing structure composed of a first pressing block 5 and a second pressing block 6 is specially designed. The two pressing blocks are made according to the arrangement parameters of the perforations of the ceramic strip 9 and are stacked in the height direction to press the transition ring 10 and the solder, which can ensure welding reliability and sealing effect, reduce the difficulty of part processing and assembly. In this embodiment, in order to match the lead structure with an expansion surface, the flat head groove 4 is preferably a strip groove, and the strip groove also needs to form a stepped structure with the second groove 3. In this way, the stepped structure is used to match the expansion surface to prevent the first lead 7 with an expansion surface and the first lead flat head 8 from sagging. In addition, in this embodiment, the transition ring 10, as a solder carrier, is sleeved around each first lead 7, and its outer diameter is greater than the perforation diameter of the ceramic strip 9. In this way, during the pressing process of the pressing block, the transition ring 10 is accurately pressed into the surface of the ceramic strip 9, so that the solder preloaded around the transition ring 10 is uniformly distributed at the junction between the first lead 7 and the ceramic strip 9. This design realizes the point and quantitative supply of solder, avoiding waste of solder and ensuring the cleanliness of the welding site.

[0032] Please refer to Figures 4-8 , the second welding tooling adopts a modular assembly design, mainly including a second base 11 with a limiting fence and a ring frame 16, and a bottom plate 17. The open space inside the second base 11 provides a standardized assembly environment for metal parts. Please refer to Figure 7 and Figure 8, the bottom plate 17 enters the open space, enters the rear by means of the protrusion 18 arranged in the second base 11, is limited, in addition, by means of the fence structure realizes three-dimensional limiting, and then ensures the spatial position precision of the bottom plate 17, the ring frame 16 is as the intermediate structure of connecting the bottom plate 17 and the lead portion, the first stopper 14 and the second stopper 15 are arranged on both sides thereof, the solder for welding the ring frame 16 at the bottom plate 17 is limited by the first stopper 14 and the second stopper 15, so that the solder is prevented from deviating.In the welding assembly stage, the lead portion of the first welding tool assembly is transferred to the second welding tool as a whole, the lead portion passes through the center hole of the ring frame 16 and extends into the ring frame 16, at this time, the third pressing block 12 plays a key role, the extension structure arranged at the lower part thereof enters the inside of the ring frame 16, and nested cooperation is formed with the first lead flat head 8, the extension structure can apply welding pressure vertically downward in the pressing process, and can realize interference-free separation after welding through the reserved empty stop structure, the depth of the extension structure is accurately calculated, so that the solder reaches the optimal melting state at the junction of the metal piece and the lead.In the embodiment, it is also to be explained that, please refer to Figure 8 The metal piece with lead positioning also has independent second lead 19, the second lead 19 is consistent with the first lead 7, and both pass through the ring frame 16 and extend into the ring frame 16.In addition, when the lead portion (the first lead 7 and the second lead 19) is combined with the metal piece, the fourth pressing block 13 is also arranged, the fourth pressing block 13 can pressurize the lead portion, ensure the welding reliability and sealing effect, and can reduce the part processing difficulty and assembly difficulty, in the embodiment, it is also to be explained that, the bottom plate 17 and the second base 11 have a certain thermal expansion gap.

[0033] The technical features of the above-described embodiments can be combined arbitrarily, for the sake of concise description, not all possible combinations of the technical features in the above-described embodiments are described, however, as long as the combinations of the technical features do not exist contradictory, it should be considered that the range is recorded in the present application.

[0034] The above-described embodiments only express several implementation manners of the present application, the description is more specific and detailed, but it should not be understood as the limitation on the scope of the present application patent. It should be pointed out that, for ordinary skilled person in the art, on the premise of not departing from the concept of the present application, a plurality of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A metal welding tool with lead positioning, characterized in that: It includes a first welding tool for making a lead part, and a second welding tool; The second welding tool has an internal accommodating chamber, the structure of the metal part is in the accommodating chamber, and the lead part is inserted into the accommodating chamber and fixedly connected with the metal part; The first welding tool includes a first base with multiple grooves, the grooves are the first groove and the second groove from top to bottom, and the flat head groove is below the second groove, wherein the second groove is used to place the ceramic strip, and the ceramic strip has multiple through-holes, and each first lead is inserted into the corresponding through-hole and extends downward, and the downwardly extending portion is the flat head portion of the first lead, and the flat head portion of the first lead enters the flat head groove; The first welding tool further includes a first pressing block and a second pressing block having corresponding numbers and spacings of perforations, the first pressing block and the second pressing block being stacked in a height direction and interlaced with the first lead downwardly into the first groove; The second welding tool includes a second base with an open space inside. In addition, the second base also has a fence. The base enters the open space and is limited in the open space. The ring frame enters the open space. The second welding tool also includes a first stopper and a second stopper located on both sides of the ring frame. The first stopper and the second stopper constrain the ring frame so that the ring frame fits with the solder at the base. There is also a third pressure block, which covers the top of the ring frame.

2. The metal welding tool with lead positioning according to claim 1, characterized in that: A transition ring sleeved on the first lead is provided above each through-hole, solder is arranged around the transition ring, and the first pressing block and the second pressing block squeeze the transition ring.

3. The metal welding tool with lead positioning according to claim 2, characterized in that: An extension surface is provided at the junction of the first lead and the first lead flat head portion, and the extension surface covers the bottom of the second groove, so that the assembly of the first lead and the first lead flat head portion does not fall downward.

4. The metal welding tool with lead positioning according to claim 1, characterized in that: The combination of the first lead, the first lead flat head, the ceramic strip and the transition ring passes through the ring frame and extends into the ring frame.

5. The metal welding tool with lead positioning according to claim 4, characterized in that: The area where the third pressing block covers the upper part of the ring frame has an extension structure extending downward into the ring frame, and the extension structure is used to constrain the part of the assembly entering the ring frame.

6. The metal welding tool with lead positioning according to claim 5, characterized in that: There is a gap between the extension structure and the third pressing block body, and the gap is used for pulling the extension structure out of the assembly.

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