Valve element welding tool

Abstract

The utility model provides a valve core welding tool which is used for welding and assembling a valve core, the valve core comprises a sheet piece and a peripheral piece, the tool comprises a first tool piece and a second tool piece, internal threads are arranged on the side wall of a third groove of the first tool piece, external threads matched with the internal threads are arranged on the side wall of the second tool piece, and therefore the valve core can be welded and assembled. The sheet part is located in the second groove, the center protrusion is located in the first groove or under the first groove, the peripheral part and the sheet part can be tightly assembled conveniently by screwing the second tool part, and no gap exists between the peripheral part and the sheet part. A plurality of welding spots are evenly arranged at the position, located on the periphery of a center hole, of a sheet part, a plurality of welding holes in one-to-one correspondence with the welding spots are evenly formed in the end face, away from a second tool part, of a first tool part, and the welding holes communicate with a second groove, so that the sheet part and a peripheral part are conveniently welded together; the welding precision and the welding stability are guaranteed, and deformation is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of semiconductor valve core manufacturing, in particular to a valve core welding tooling fixture. Background Art

[0002] In the semiconductor field, the gas flow used in many process procedures needs to be controlled to ensure the quality of process production, which requires the use of gas flow valves. The valve core is the core component in the flow control valve body and is used in industrial automation instruments to increase or decrease the pressure of gas. At present, when welding the valve core, due to the unreliable assembly between components and the existence of gaps, the welding accuracy of the valve core is low during the welding process, and deformation is likely to occur. Summary of the Utility Model

[0003] The purpose of the utility model is to solve the disadvantages of low welding accuracy and easy deformation of the valve core in the prior art, and to propose a valve core welding tooling fixture.

[0004] To achieve the above purpose, the utility model adopts the following technical scheme: A valve core welding tooling fixture for welding and assembling a valve core. The valve core includes a thin sheet part and an outer peripheral part. The outer diameter of the thin sheet part is larger than that of the outer peripheral part. A central hole is provided in the middle of the thin sheet part. A central protrusion is provided in the middle of the end face of the outer peripheral part close to the thin sheet part. The central protrusion is matched with the central hole. A plurality of welding points are evenly provided at the position of the thin sheet part outside the central hole. The tooling fixture includes a first tooling part and a second tooling part. A first groove, a second groove and a third groove are sequentially provided through the first tooling part in the middle of the first tooling part. The first groove, the second groove and the third groove are sequentially connected. The inner diameters of the first groove, the second groove and the third groove gradually increase. The inner diameter of the first groove is not less than the outer diameter of the central protrusion. The inner diameter of the second groove is not less than the outer diameter of the thin sheet part. Internal threads are provided on the side wall of the third groove. A plurality of welding holes are evenly provided on the end face of the first tooling part away from the second tooling part. The plurality of welding holes correspond to the plurality of welding points one by one. The plurality of welding holes are all connected to the second groove. External threads are provided on the side wall of one end of the second tooling part close to the first tooling part. The internal threads and the external threads are matched. A contact protrusion is provided in the middle of the end face of the second tooling part close to the first tooling part. The outer diameter of the contact protrusion is smaller than the inner diameter of the second groove. During welding, the contact protrusion contacts the end face of the outer peripheral part away from the thin sheet part. The end face of the thin sheet part away from the outer peripheral part fits with the bottom surface of the second groove. The end face of the thin sheet part close to the outer peripheral part fits with the outer peripheral part.

[0005] Preferably, a limit protrusion is provided on the end face of the second tooling part away from the first tooling part. The outer diameter of the limit protrusion is larger than the inner diameter of the third groove. Further, the outer diameter of the limit protrusion is equal to the outer diameter of the first tooling part. The contact protrusion, the second tooling part and the limit protrusion are coaxially arranged.

[0006] Preferably, the number of the plurality of welding spots and the number of the plurality of welding holes are both three.

[0007] Preferably, the first groove, the second groove and the third groove are coaxially arranged.

[0008] Preferably, the valve core also includes an embedded component, an embedded groove is provided in the middle part of the central protrusion, the embedded component and the embedded groove cooperate with each other, and the height of the embedded component is not less than the groove depth of the embedded groove; the tooling also includes a resistance member, the resistance member is arranged at the notch of the first groove, during welding, the end face of the embedded component away from the peripheral component contacts the resistance member, and the end face of the embedded component close to the peripheral component contacts the bottom surface of the embedded groove.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows: by arranging an internal thread on the side wall of the third groove of the first tooling piece and an external thread matching the internal thread on the side wall of the second tooling piece, the thin sheet piece is located in the second groove, and the center protrusion is located in the first groove or directly below the first groove, so that it is convenient to achieve tight assembly of the peripheral piece and the thin sheet piece by twisting the second tooling piece, and there is no gap between the two; by evenly arranging a plurality of welding points at the position outside the center hole on the thin sheet piece, and evenly arranging a plurality of welding holes corresponding to the plurality of welding points on the end face of the first tooling piece away from the second tooling piece, and the plurality of welding holes are connected to the second groove, it is convenient to weld the thin sheet piece and the peripheral piece together, which not only ensures welding accuracy and welding stability, but also avoids deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the structure of a valve core according to an embodiment of the utility model;

[0011] Figure 2 This is a structural schematic diagram of a valve core welding tooling according to an embodiment of the utility model;

[0012] Figure 3 It is a schematic diagram of the top view of the structure of the first tooling piece of one embodiment of the utility model;

[0013] Figure 4 for Figure 2 The use status diagram of the middle valve core welding tooling;

[0014] Figure 5 This is a structural schematic diagram of a valve core welding tooling according to another embodiment of the utility model;

[0015] Figure 6 for Figure 5 Diagram of the usage status of the middle valve core welding tooling. DETAILED DESCRIPTION

[0016] In order to provide a further understanding of the purpose, structure, features, and functions of the present invention, the present invention is described in detail below with reference to the embodiments.

[0017] Please refer to Figures 1 to 4 , a valve core welding tooling 100 of the present utility model is used for welding and assembling the valve core 10.

[0018] Please refer to Figure 1 , Figure 1 which is a schematic structural diagram of the valve core of an embodiment of the present utility model. The valve core 10 includes a thin sheet member 11 and an outer peripheral member 12. The outer diameter of the thin sheet member 11 is larger than that of the outer peripheral member 12. A central hole 111 is provided in the middle of the thin sheet member 11. A central protrusion 121 is provided in the middle of the end face of the outer peripheral member 12 close to the thin sheet member 11. The central protrusion 121 is matched with the central hole 111. A plurality of welding points (not shown in the figure) are uniformly provided at the position of the thin sheet member 11 outside the central hole 111.

[0019] Please refer to Figure 2 , Figure 3 and Figure 4 , Figure 2 which is a schematic structural diagram of a valve core welding tooling of an embodiment of the present utility model; Figure 3 which is a top view structural diagram of the first tooling member of an embodiment of the present utility model; Figure 4 which is a usage state diagram of a valve core welding tooling of an embodiment of the present utility model.

[0020] The tooling 100 includes a first tooling member 21 and a second tooling member 22. A first groove 211, a second groove 212 and a third groove 213 are sequentially provided through the first tooling member 21 in the middle of the first tooling member 21. The first groove 211, the second groove 212 and the third groove 213 are sequentially communicated. The inner diameters of the first groove 211, the second groove 212 and the third groove 213 gradually increase. The inner diameter of the first groove 211 is not less than the outer diameter of the central protrusion 121. The inner diameter of the second groove 212 is not less than the outer diameter of the thin sheet member 11, so that the central protrusion 121 of the outer peripheral member 12 can enter the first groove 211 through the central hole 111. An internal thread 2131 is provided on the side wall of the third groove 213. A plurality of welding holes 214 are uniformly provided on the end face of the first tooling member 21 away from the second tooling member 22. The plurality of welding holes 214 correspond to the plurality of welding points one by one. The plurality of welding holes 214 are all communicated with the second groove 212, so as to weld the thin sheet member 11 and the outer peripheral member 12 together through the plurality of welding holes 214 and the plurality of welding points.

[0021] An external thread is provided on the side wall of one end of the second tooling piece 22 close to the first tooling piece 21, and the internal thread 2131 cooperates with the external thread so that the second tooling piece 22 can be moved in the third groove 213 by twisting the second tooling piece 22. A resisting protrusion 221 is provided in the middle of the end surface of the second tooling piece 22 close to the first tooling piece 21. The outer diameter of the resisting protrusion 221 is smaller than the inner diameter of the second groove 212, so that the resisting protrusion 221 can resist the peripheral piece 12. When installing the component 22, the peripheral component 12 moves toward the first groove 211, so that the center protrusion 121 enters the first groove 211 through the center hole 111, so that the end surface of the thin sheet component 11 close to the peripheral component 12 is tightly fitted with the peripheral component 12, and at the same time, the end surface of the thin sheet component 11 away from the peripheral component 12 is tightly fitted with the bottom surface of the second groove 212. The thin sheet component 11 and the peripheral component 12 are tightly assembled without any gap, thereby ensuring welding accuracy and welding stability and avoiding deformation.

[0022] Working process: please refer to Figures 1 to 4 First, insert the central protrusion 121 of the peripheral member 12 into the central hole 111 of the thin sheet member 11 for preliminary assembly, and then place the preliminary assembly as a whole between the first tooling member 21 and the second tooling member 22, the thin sheet member 11 is located in the second groove 212, the central protrusion 121 is located in the first groove 211 or directly below the first groove 211, and the abutting protrusion 221 contacts the end face of the peripheral member 12 away from the thin sheet member 11; then, twist the second tooling member 22, the peripheral member 12 moves toward the first groove 211, and the central protrusion 121 is in contact with the end face of the peripheral member 12 away from the thin sheet member 11. 1 gradually enters the first groove 211, the end surface of the thin sheet member 11 close to the peripheral member 12 fits with the peripheral member 12, and the second tooling member 22 is continuously twisted, and the end surface of the thin sheet member 11 away from the peripheral member 12 fits with the groove bottom surface of the second groove 212. At this time, the peripheral member 12 and the thin sheet member 11 are assembled most tightly, and there is no gap between them; finally, the thin sheet member 11 and the peripheral member 12 are welded together through a plurality of welding holes 214 and a plurality of welding points corresponding to each other, which not only ensures welding accuracy and welding stability, but also avoids deformation.

[0023] Preferably, a limiting protrusion 222 is provided on the end surface of the second tooling piece 22 away from the first tooling piece 21, and the outer diameter of the limiting protrusion 222 is greater than the inner diameter of the third groove 213, so as to limit the movable distance of the second tooling piece 22 in the third groove 213. Furthermore, the outer diameter of the limiting protrusion 222 is equal to the outer diameter of the first tooling piece 21; the abutting protrusion 221, the second tooling piece 22 and the limiting protrusion 222 are coaxially arranged to cooperate with the first tooling piece 21, and can stably abut the peripheral piece 12, so that the thin sheet piece 11 and the peripheral piece 12 are closely fitted.

[0024] Preferably, the number of the plurality of welding points and the plurality of welding holes 214 is 3 each, so as to facilitate welding and ensure welding stability.

[0025] Preferably, the first groove 211 , the second groove 212 and the third groove 213 are coaxially arranged to facilitate cooperation with the valve core 10 to achieve assembly welding.

[0026] Please continue to see Figure 1 The valve core 10 also includes an embedded component 13 , and an embedded groove 1211 is provided in the middle of the central protrusion 121 . The embedded component 13 and the embedded groove 1211 cooperate with each other, and the height of the embedded component 13 is not less than the groove depth of the embedded groove 1211 .

[0027] In order to enable the welding tool to simultaneously assemble the inner insert 13 and the outer peripheral part 12, see Figure 5 , Figure 5 FIG. 1 is a structural schematic diagram of a valve core welding tool 110 ′ according to another embodiment of the utility model. Figure 2 Compared with the embodiment in the figure, the tool further includes a resistance member 23 , and the resistance member 23 is arranged at the notch of the first groove 211 .

[0028] Working process: please refer to Figure 1 , Figure 5 and Figure 6 First, insert the central protrusion 121 of the peripheral member 12 into the central hole 111 of the thin sheet member 11, and place the embedded member 13 into the embedded groove 1211 for preliminary assembly, and then place the preliminary assembly as a whole between the first tooling member 21 and the second tooling member 22, the thin sheet member 11 is located in the second groove 212, the central protrusion 121 is located in the first groove 211 or directly below the first groove 211, and the abutment protrusion 221 contacts the end face of the peripheral member 12 away from the thin sheet member 11; then, twist the second tooling member 22, the peripheral member 12 moves toward the first groove 211, the central protrusion 121 gradually enters the first groove 211, and the end face of the embedded member 13 away from the peripheral member 12 gradually contacts the abutment member 23 , the end face of the thin piece 11 close to the peripheral piece 12 gradually fits with the peripheral piece 12, and the second tooling piece 22 continues to be twisted, the end face of the embedded piece 13 close to the peripheral piece 12 contacts the bottom surface of the embedded groove 1211, and the end face of the thin piece 11 away from the peripheral piece 12 fits with the bottom surface of the second groove 212. At this time, the embedded piece 13 is completely embedded in the embedded groove 1211, and the assembly of the embedded piece 13 and the peripheral piece 12 is realized. The peripheral piece 12 and the thin piece 11 are also assembled most tightly, and there is no gap between the two. Finally, the thin piece 11 and the peripheral piece 12 are welded together through a plurality of corresponding welding holes 214 and a plurality of welding points, which not only ensures welding accuracy and welding stability, but also avoids deformation.

[0029] A valve core welding tooling of the present utility model is provided with an internal thread on the side wall of the third groove of the first tooling part and an external thread matching with the internal thread on the side wall of the second tooling part. The thin sheet part is located in the second groove, and the central protrusion is located in the first groove or directly below the first groove, facilitating the tight assembly of the outer peripheral part and the thin sheet part by screwing the second tooling part, and there is no gap between the two. By uniformly arranging a plurality of welding points at positions on the thin sheet part outside the central hole, uniformly arranging a plurality of welding holes corresponding to the plurality of welding points one by one on the end face of the first tooling part away from the second tooling part, and the plurality of welding holes communicating with the second groove, it is convenient to weld the thin sheet part and the outer peripheral part together, ensuring both welding accuracy and welding stability, and avoiding deformation.

[0030] The present utility model has been described by the above related embodiments. However, the above embodiments are only examples for implementing the present utility model. It must be pointed out that the disclosed embodiments do not limit the scope of the present utility model. On the contrary, modifications and refinements made without departing from the spirit and scope of the present utility model fall within the scope of the patent protection of the present utility model.

Claims

1. A valve core welding tool, used for welding and assembling a valve core, characterized in that: The valve core includes a thin sheet and a peripheral piece, the outer diameter of the thin sheet is larger than the outer diameter of the peripheral piece, a center hole is provided in the middle of the thin sheet, a center protrusion is provided in the middle of the end surface of the peripheral piece close to the thin sheet, the center protrusion is matched with the center hole, and a plurality of welding points are evenly provided on the thin sheet at positions located on the periphery of the center hole; The tooling comprises a first tooling piece and a second tooling piece, a middle part of the first tooling piece is sequentially provided with a first groove, a second groove and a third groove running through the first tooling piece, the first groove, the second groove and the third groove are sequentially connected, the inner diameters of the first groove, the second groove and the third groove gradually increase, the inner diameter of the first groove is not less than the outer diameter of the central protrusion, the inner diameter of the second groove is not less than the outer diameter of the thin sheet, the side wall of the third groove is provided with an internal thread, the end surface of the first tooling piece away from the second tooling piece is evenly provided with a plurality of welding holes, the plurality of welding holes correspond to the plurality of welding points one by one, and the plurality of welding holes are all connected with the second groove, the side wall of the second tooling piece close to one end of the first tooling piece is provided with an external thread, the internal thread and the external thread cooperate, the middle part of the end surface of the second tooling piece close to the first tooling piece is provided with a resistance protrusion, and the outer diameter of the resistance protrusion is smaller than the inner diameter of the second groove; During welding, the abutment protrusion contacts the end face of the peripheral part away from the thin sheet part, the end face of the thin sheet part away from the peripheral part fits with the bottom face of the second groove, and the end face of the thin sheet part close to the peripheral part fits with the peripheral part.

2. A valve core welding tool as claimed in claim 1, characterized in that: A limiting protrusion is provided on the end surface of the second tooling piece away from the first tooling piece, and the outer diameter of the limiting protrusion is greater than the inner diameter of the third groove.

3. A valve core welding tool as claimed in claim 2, characterized in that: The outer diameter of the limiting protrusion is equal to the outer diameter of the first tooling piece.

4. A valve core welding tool as claimed in claim 2, characterized in that: The interference protrusion, the second tooling piece and the limiting protrusion are coaxially arranged.

5. A valve core welding tool as claimed in claim 1, characterized in that: The number of the plurality of welding spots and the number of the plurality of welding holes are both three.

6. A valve core welding tool as claimed in claim 1, characterized in that: The first groove, the second groove and the third groove are coaxially arranged.

7. A valve core welding tool as claimed in claim 1, characterized in that: The valve core also includes an embedded component, an embedded groove is provided in the middle of the central protrusion, the embedded component and the embedded groove cooperate with each other, and the height of the embedded component is not less than the groove depth of the embedded groove; the tooling also includes a resistance member, which is arranged at the notch of the first groove. During welding, the end face of the embedded component away from the peripheral component contacts the resistance member, and the end face of the embedded component close to the peripheral component contacts the groove bottom surface of the embedded groove.

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