Welding jig for valve element and diaphragm of gas cylinder valve

Abstract

The utility model discloses a welding jig for a valve core and a diaphragm of a cylinder valve, which comprises a jig base and a jig cover plate, one end face of the jig base is provided with a mounting blind hole, and an end seat of the valve core is positioned in the mounting blind hole; the hole edge of the mounting blind hole is expanded outwards to form a diaphragm positioning hole, and the diaphragm is arranged outside the rod body in a sleeving manner and is positioned in the diaphragm positioning hole; the jig cover plate is installed at the end, provided with the installation blind hole, of the jig base, a connecting piece is arranged between the jig cover plate and the jig base, and the jig cover plate is detachably connected with the jig base through the connecting piece. The jig cover plate abuts against the outer wall, away from the jig base, of the membrane, a welding penetrating hole is formed in the middle of the jig cover plate, a rod body of the valve element penetrates out of the welding penetrating hole, the diameter of the welding penetrating hole is larger than that of the rod body, and a welding position gap is reserved between the inner wall of the welding penetrating hole and the outer wall of the rod body. According to the utility model, the welding difficulty is reduced, the welding qualification rate and the welding efficiency between the diaphragm and the valve core are improved, and the production quality of products is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of bottle valve manufacturing, in particular to a welding jig for a valve core and a diaphragm of a gas cylinder valve. Background Art

[0002] Gas cylinder valve refers to the valve installed on the gas cylinder to control the gas on and off, also known as the cylinder valve. Gas cylinders of different media generally use gas cylinder valves of different structures, and usually have the characteristics of simple structure, small size, high strength, and materials that can adapt to the physical and chemical characteristics of the medium.

[0003] Reference Figure 1 and Figure 2 An existing gas cylinder valve includes a valve core 11 component 1 and a diaphragm 2. The valve core component 1 is composed of a valve core 11, a base 13 and an insert 12. The valve core 11 includes an integrated rod body 112 and an end seat 111. The insert 12 is embedded and fixed in the base 13. The base 13 is welded and fixed to the end surface of the end seat 111 away from the rod body 112. A through hole is provided in the middle of the diaphragm 2. The diaphragm 2 is sleeved on the rod body 112 of the valve core 11 through the through hole. The diaphragm 2 is welded and fixed to the rod body 112 of the valve core 11.

[0004] In view of the above-mentioned prior art, the inventor believes that when welding the diaphragm and the rod of the valve core, due to the influence of welding stress and external force contact, it is difficult to ensure a smooth weld between the diaphragm and the valve core, and problems such as tilting and deformation are prone to occur, resulting in a high product failure rate and low welding efficiency. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a welding jig for the valve core and diaphragm of a gas cylinder valve, which reduces the welding difficulty, improves the welding qualification rate and welding efficiency between the diaphragm and the valve core, and ensures the product production quality.

[0006] The utility model solves the technical problem by adopting the following technical solution: a welding jig for a valve core and a diaphragm of a gas cylinder valve, comprising a jig base and a jig cover plate, wherein an installation blind hole is provided on one end surface of the jig base, and an end seat of the valve core is located in the installation blind hole; a diaphragm positioning hole is provided on the edge of the installation blind hole to expand outward, and the diaphragm is sleeved outside the rod body and located in the diaphragm positioning hole;

[0007] The jig cover is installed on the end of the jig base where a mounting blind hole is opened. A connecting piece is provided between the jig cover and the jig base, and the jig cover is detachably connected to the jig base through the connecting piece. The jig cover abuts against the outer wall of the diaphragm away from the jig base. A welding through hole is opened in the middle of the jig cover, and the rod body of the valve core passes through the welding through hole. The hole diameter of the welding through hole is larger than the diameter of the rod body, so that a welding position gap is left between the inner wall of the welding through hole and the outer wall of the rod body.

[0008] Furthermore, an insert positioning hole is provided on the bottom surface of the installation blind hole, and when the valve core component is installed in the fixture base, one end of the insert away from the valve core extends into the insert positioning hole.

[0009] Furthermore, a positioning pin is provided on the end surface of the jig base close to the jig cover, and a pin hole for the positioning pin to pass through is opened on the jig cover.

[0010] Furthermore, a ring is fixed to the end surface of the jig cover plate close to the jig base, the ring is coaxial with the diaphragm positioning hole, and the jig cover plate abuts against the outer wall of the diaphragm away from the jig base through the ring.

[0011] Furthermore, a welding cone hole is formed on the end surface of the jig cover away from the jig base, the welding cone hole is connected with the welding through hole, and the diameter of the welding cone hole increases in a direction away from the welding through hole.

[0012] Furthermore, the connecting member adopts a connecting bolt, and the connecting bolt is penetrated in the jig cover and the jig base, and the jig cover is detachably connected to the jig base through the connecting bolt.

[0013] Beneficial effects of the utility model:

[0014] The welding jig of the utility model places the valve core component and the diaphragm to be welded between the jig base and the jig cover plate, and realizes the relative fixation between the diaphragm and the rod body of the valve core through the jig base and the jig cover plate; then a welding robot is used to weld the rod body and the diaphragm in the gap at the welding position, thereby realizing the welding process of the valve core and the diaphragm, the diaphragm is not easily affected by welding stress and external force, the product welding qualification rate and welding efficiency are improved, and the product production quality is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural cross-sectional view of the gas cylinder valve.

[0016] Figure 2 It is the structural explosion diagram of the gas cylinder valve.

[0017] Figure 3 It is a structural schematic diagram of a welding fixture of the utility model.

[0018] Figure 4 It is a partial cross-sectional view used to reflect the installation relationship between the welding fixture and the valve core component.

[0019] Figure 5 It is a structural schematic diagram of the fixture base in the utility model.

[0020] Figure 6 It is a structural schematic diagram of a fixture cover plate in the utility model.

[0021] In the figure: 1. valve core component; 11. valve core; 111. end seat; 112. rod body; 12. insert; 13. base; 2. diaphragm; 3. fixture base; 31. mounting blind hole; 32. diaphragm positioning hole; 33. insert positioning hole; 34. positioning pin; 35. connecting hole; 4. fixture cover; 41. pin hole; 42. welding cone hole; 43. welding through hole; 44. ring platform. DETAILED DESCRIPTION

[0022] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0023] The utility model discloses a welding jig for a valve core and a diaphragm of a gas cylinder valve.

[0024] Reference Figures 2 to 4 A welding jig for a valve core and a diaphragm of a gas cylinder valve comprises a jig base 3 and a jig cover plate 4. A mounting blind hole 31 is provided on one end surface of the jig base 3, and an end seat 111 of a valve core 11 is located in the mounting blind hole 31; an insert positioning hole 33 is also provided on the bottom surface of the mounting blind hole 31, and when the valve core component 1 is installed in the jig base 3, an end of the insert 12 away from the valve core 11 extends into the insert positioning hole 33; a diaphragm positioning hole 32 is provided on the edge of the mounting blind hole 31 to expand outward, and the diaphragm 2 is sleeved outside the rod body 112 and located in the diaphragm positioning hole 33. The jig cover plate 4 is installed at the end of the jig base 3 where a mounting blind hole 31 is opened. A connecting piece is provided between the jig cover plate 4 and the jig base 3. The jig cover plate 4 is detachably connected to the jig base 3 through the connecting piece. The jig cover plate 4 abuts against the outer wall of the diaphragm 2 away from the jig base 3. A welding through hole 43 is opened in the middle of the jig cover plate 4. The rod body 112 of the valve core 11 passes through the welding through hole 43. The hole diameter of the welding through hole 43 is larger than the diameter of the rod body 112, so that a welding position gap is left between the inner wall of the welding through hole 43 and the outer wall of the rod body 112.

[0025] When using the welding jig to weld the diaphragm 2 and the valve core 11, first weld the insert 12 and the base 13 to the end of the valve core 11 to complete the welding process of the valve core component 1; then place the end of the valve core component 1 in the mounting blind hole 31, so that the end seat 111 and the base 13 are embedded in the mounting blind hole 31, and the end of the insert 12 extending out of the base 13 is extended into the insert positioning hole 33, wherein the setting of the mounting blind hole 31 and the insert positioning hole 33 is used to realize the positioning of the valve core component 1 on the jig base 3. Afterwards, the diaphragm 2 is sleeved on the outside of the rod body 112 and placed in the diaphragm positioning hole 32 of the jig base 3 to achieve preliminary positioning of the welding position between the diaphragm positioning hole 32 and the rod body 112; then, the jig cover 4 is fixed to the end of the jig base 3 by using a connecting piece, and the jig cover 4 is made to abut against the diaphragm 2, thereby achieving relative fixation between the diaphragm 2 and the rod body 112 of the valve core 11; finally, the welding robot welds the rod body 112 and the diaphragm 2 through the welding position gap left between the inner wall of the welding perforation 43 and the outer wall of the rod body 112, thereby achieving the welding process of the valve core 11 and the diaphragm 2, and the diaphragm 2 is not easily affected by welding stress and external force, thereby improving the product welding process qualification rate and welding process efficiency.

[0026] In this embodiment, the connecting member between the jig base 3 and the jig cover plate 4 is a connecting bolt, which is passed through the jig cover plate 4 and the jig base 3, and the jig cover plate 4 is detachably connected to the jig base 3 through the connecting bolt. In some embodiments, the connecting member may also be a buckle, a quick lock, etc., as long as the jig base 3 and the jig cover plate 4 can be detachably connected.

[0027] Reference Figures 3 to 5 In this embodiment, the jig base 3 and the jig cover plate 4 are both cylindrical, which is convenient for clamping the chuck during subsequent welding. A positioning pin 34 is provided on the end surface of the jig base 3 close to the jig cover plate 4, and a pin hole 41 for the positioning pin 34 to pass through is opened on the jig cover plate 4; the positioning pin 34 is provided to facilitate the alignment of the jig cover plate 4 with the connecting hole 35 on the jig base 3 for the connecting bolt to pass through.

[0028] Reference Figure 6 A ring platform 44 is fixed to the end surface of the jig cover 4 close to the jig base 3. The ring platform 44 is coaxial with the diaphragm positioning hole 32. The jig cover 4 abuts against the outer wall of the diaphragm 2 away from the jig base 3 through the ring platform 44. The setting of the ring platform 44 can ensure the limiting and fixing effect of the diaphragm 2 while reducing the contact area with the diaphragm 2 to prevent damage to the diaphragm 2.

[0029] Reference Figure 3A welding cone hole 42 is formed on the end surface of the jig cover plate 4 away from the jig base 3. The welding cone hole 42 is connected to the welding through hole 43. The diameter of the welding cone hole 42 increases in a direction away from the welding through hole 43. The setting of the welding cone hole 42 provides more operating space for the welding processing of the welding robot and reduces the possibility of interference in welding movement.

[0030] The utility model discloses a welding jig for a valve core and a diaphragm of a gas cylinder valve, and its working principle is as follows: before welding the diaphragm 2 and the valve core 11, firstly, the insert 12 and the base 13 are welded and fixed to the end of the valve core 11, so as to complete the welding process of the valve core component 1; then, the end of the valve core component 1, namely, the end seat 111 and the base 13 are placed in the installation blind hole 31, and the end of the insert 12 extending into the base 13 is extended into the insert positioning hole 33, so as to realize the positioning of the valve core component 1 on the jig base 3. Afterwards, the diaphragm 2 is sleeved on the outside of the rod body 112 and placed in the diaphragm positioning hole 32 of the jig base 3 to achieve preliminary positioning of the welding position between the diaphragm positioning hole 32 and the rod body 112; then, the jig cover 4 is fixed to the end of the jig base 3 by using a connecting piece, and the jig cover 4 is made to abut against the diaphragm 2, thereby achieving relative fixation between the diaphragm 2 and the rod body 112 of the valve core 11; finally, the welding robot welds the rod body 112 and the diaphragm 2 through the welding position gap left between the inner wall of the welding perforation 43 and the outer wall of the rod body 112, thereby achieving the welding process of the valve core 11 and the diaphragm 2, and the diaphragm 2 is not easily affected by welding stress and external force, thereby improving the product welding qualification rate and welding efficiency.

[0031] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A welding jig for a valve core and a diaphragm of a gas cylinder valve, characterized in that: The jig comprises a jig base (3) and a jig cover plate (4); a mounting blind hole (31) is provided on one end surface of the jig base (3); an end seat (111) of a valve core (11) is located in the mounting blind hole (31); a diaphragm positioning hole (32) is provided at the edge of the mounting blind hole (31) extending outward; and the diaphragm (2) is sleeved outside the rod body (112) and located in the diaphragm positioning hole (32); The jig cover plate (4) is installed on the end of the jig base (3) provided with a mounting blind hole (31), a connecting piece is provided between the jig cover plate (4) and the jig base (3), and the jig cover plate (4) is detachably connected to the jig base (3) via the connecting piece; the jig cover plate (4) abuts against the outer wall of the diaphragm (2) away from the jig base (3), a welding through hole (43) is provided in the middle of the jig cover plate (4), the rod body (112) of the valve core (11) passes through the welding through hole (43), and the hole diameter of the welding through hole (43) is larger than the diameter of the rod body (112), so that a welding position gap is left between the inner wall of the welding through hole (43) and the outer wall of the rod body (112).

2. The welding jig for the valve core and the diaphragm of a gas cylinder valve according to claim 1, characterized in that: The bottom surface of the installation blind hole (31) is provided with an insert positioning hole (33). When the valve core component (1) is installed in the fixture base (3), the end of the insert (12) away from the valve core (11) extends into the insert positioning hole (33).

3. The welding jig for the valve core and the diaphragm of a gas cylinder valve according to claim 1, characterized in that: A positioning pin (34) is provided on the end surface of the jig base (3) close to the jig cover plate (4), and a pin hole (41) for the positioning pin (34) to pass through is provided on the jig cover plate (4).

4. A welding jig for a valve core and a diaphragm of a gas cylinder valve according to any one of claims 1 to 3, characterized in that: A ring platform (44) is fixed to the end surface of the jig cover plate (4) close to the jig base (3), and the ring platform (44) is coaxial with the diaphragm positioning hole (32). The jig cover plate (4) abuts against the outer wall of the diaphragm (2) away from the jig base (3) through the ring platform (44).

5. The welding jig for the valve core and the diaphragm of a gas cylinder valve according to claim 4, characterized in that: A welding cone hole (42) is provided on the end surface of the jig cover plate (4) away from the jig base (3); the welding cone hole (42) is connected to the welding through hole (43); and the diameter of the welding cone hole (42) increases in a direction away from the welding through hole (43).

6. The welding jig for the valve core and the diaphragm of a gas cylinder valve according to claim 4, characterized in that: The connecting member is a connecting bolt, and the connecting bolt is inserted into the jig cover plate (4) and the jig base (3). The jig cover plate (4) is detachably connected to the jig base (3) via the connecting bolt.

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