Welding jig for valve element and valve element base of gas cylinder valve

Abstract

The utility model discloses a welding jig for a valve core and a valve core base of a cylinder valve, which comprises a jig seat and a pressure head mechanism, one end face of the jig seat is provided with a mounting hole, and the jig seat is mounted on a chuck device; the chuck device comprises a mounting seat, a driving motor and a three-jaw chuck, the axis of the three-jaw chuck is horizontally arranged when the three-jaw chuck is used, the jig seat is clamped on the three-jaw chuck, and the driving motor is connected with the three-jaw chuck and can drive the three-jaw chuck to rotate; the pressing head mechanism is arranged on the side, away from the three-jaw chuck, of the jig base and comprises a supporting plate, a rotary pressing head and a telescopic assembly, the telescopic assembly is installed on the supporting plate, and the rotary pressing head is rotationally connected to the telescopic assembly; the rotary pressing head can abut against a valve element base installed on the end base under the elastic force effect of the telescopic assembly. The utility model provides a special jig for welding a valve core and a valve core base, which can reduce the welding difficulty, guarantee the product welding quality and improve the welding efficiency.

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 valve core base 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 An existing gas cylinder valve includes a valve core 1 and a valve core base 2, the valve core base 2 is composed of a base 21 and an insert 22 embedded in and fixed in the middle hole of the base 21, the valve core 1 includes an integrated rod body 11 and an end seat 12, the valve core base 2 is located at the end face of the end seat 12 away from the rod body 11, and the valve core base 2 and the end seat 12 are fixed by welding a circle of the outer seam of the joint surface of the two.

[0004] In view of the above-mentioned prior art, the inventor believes that when welding the valve core and the valve core base, due to the small size of the product and the need to weld a circle along the outer seam of the joint surface, the welding difficulty is high and the welding efficiency is low. Therefore, it is necessary to design a special jig to reduce the welding difficulty, ensure the product welding quality and improve the welding efficiency. Utility Model Content

[0005] In order to solve the above-mentioned existing technical problems, the utility model provides a welding jig for the valve core and the valve core base of a gas cylinder valve, which can reduce the welding difficulty, ensure the product welding quality and improve the welding efficiency.

[0006] The utility model solves the technical problem by adopting the following technical solution: a welding jig for a valve core and a valve core base of a gas cylinder valve, comprising a jig seat and a pressure head mechanism, one end surface of the jig seat is provided with a mounting hole for inserting a rod body of the valve core, and the jig seat is mounted on a chuck device when in use;

[0007] The chuck device includes a mounting seat, a driving motor and a three-jaw chuck arranged on the mounting seat. The axis of the three-jaw chuck is horizontally arranged when in use. The fixture seat is clamped on the three-jaw chuck. The driving motor is connected to the three-jaw chuck and can drive the three-jaw chuck to rotate.

[0008] The pressure head mechanism is arranged on a side of the fixture base away from the three-jaw chuck, and the pressure head mechanism includes a support plate, a rotating pressure head and a telescopic component. The telescopic component is installed on the support plate, and the rotating pressure head is rotatably connected to the telescopic component; the rotating pressure head can abut against the valve core base installed on the end seat under the elastic force of the telescopic component.

[0009] Furthermore, a locking hole is provided on the side wall of the fixture seat, the locking hole is connected to the mounting hole, a locking bolt is threadedly connected to the locking hole, and one end of the locking bolt extending into the locking hole can abut against the rod body inserted into the mounting hole.

[0010] Furthermore, two support shafts are provided at the bottom of the rotating pressure head, and the two support shafts are symmetrically arranged on both sides of the bottom of the rotating pressure head. One end of the two support shafts is fixedly connected to the support plate, and the outer peripheral surface of one end of the support shaft away from the support plate abuts against the outer peripheral surface of the valve core base to be welded.

[0011] Furthermore, the telescopic assembly includes a slider, a spring, a pull ring and a connecting rod, one end of the rotating pressure head passes through the slider and is rotatably connected to the connecting rod, the end of the connecting rod away from the rotating pressure head passes through the support plate and is fixedly connected to the pull ring, the connecting rod is slidably connected to the support plate, the spring is sleeved outside the connecting rod, one end of the spring abuts against the slider, and the other end abuts against the support plate, the two support shafts are passed through the bottom of the slider, and the support shafts are slidably connected to the slider.

[0012] Beneficial effects of the utility model:

[0013] When welding the valve core and the valve core base, the utility model utilizes the mutual cooperation of the jig seat and the pressure head mechanism to make the valve core base and the valve core fit tightly together, and then utilizes the welding robot to weld the outer seam of the joint surface of the valve core and the valve core base. In this process, the driving motor drives the three-jaw chuck to rotate, and then drives the valve core and the valve core base to rotate, and cooperates with the welding robot to realize the outer seam welding of the joint surface in one circle, which is easy to operate, reduces the difficulty of welding, ensures the welding quality and improves the welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0015] Figure 1 It is a structural diagram of the valve core and the valve core base.

[0016] Figure 2 It is a structural schematic diagram of the welding fixture of the utility model when it is in use.

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

[0018] Figure 4 It is a partial structural schematic diagram of the pressure head mechanism and the fixture seat in the utility model when they are matched.

[0019] Figure 5 It is a partial structural schematic diagram of the pressure head mechanism in the utility model.

[0020] In the figure: 1. valve core; 11. rod body; 12. end seat; 13. ring groove; 2. valve core base; 21. base; 211. ring platform; 22. insert; 3. fixture seat; 31. bottom column; 32. mounting column; 321. mounting hole; 33. locking bolt; 4. pressure head mechanism; 41. support plate; 42. slider; 43. rotating pressure head; 44. support shaft; 45. connecting rod; 46. spring; 47. pull ring; 5. chuck device; 51. three-jaw chuck; 52. drive motor; 53. mounting seat. DETAILED DESCRIPTION

[0021] 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.

[0022] The utility model discloses a welding jig for a valve core and a valve core base of a gas cylinder valve.

[0023] Reference Figures 1 to 3 A welding jig for a valve core and a valve core base of a gas cylinder valve includes a jig seat 3 and a pressure head mechanism 4. The jig seat 3 is composed of an integrally formed bottom column 31 and a mounting column 32. The bottom column 31 and the mounting column 32 are both cylindrical and coaxial. The diameter of the bottom column 31 is larger than that of the mounting column 32, which is convenient for the subsequent clamping of the chuck device 5. The end surface of the mounting column 32 away from the bottom column 31 is provided with a mounting hole 321 for inserting the rod body 11 of the valve core 1. The jig seat 3 is installed on the chuck device 5 when in use.

[0024] Reference Figures 2 to 4 The chuck device 5 includes a mounting seat 53, a driving motor 52 and a three-jaw chuck 51 arranged on the mounting seat 53. The axis of the three-jaw chuck 51 is horizontally arranged when in use. The fixture seat 3 is clamped on the three-jaw chuck 51. The driving motor 52 is connected to the three-jaw chuck 51 and can drive the three-jaw chuck 51 to rotate. The pressure head mechanism 4 is located on the side of the fixture seat 3 away from the three-jaw chuck 51. The pressure head mechanism 4 includes a support plate 41, a rotating pressure head 43 and a telescopic assembly. The telescopic assembly is installed on the support plate 41, and the rotating pressure head 43 is rotatably connected to the telescopic assembly; the rotating pressure head 43 can abut against the valve core base 2 installed on the end seat 12 under the elastic force of the telescopic assembly.

[0025] When welding the valve core 1 and the valve core base 2, first insert the rod body 11 of the valve core 1 into the mounting hole 321 of the fixture seat 3, and then move the rotary pressure head 43 to make it away from the fixture seat 3 to provide space for the installation of the valve core base 2; then, install the valve core base 2 on the end seat 12 of the valve core 1, so that the ring platform 211 on the edge of the base 21 is embedded in the corresponding ring groove 13 on the edge of the end seat 12, and the valve core 1 and the valve core base 2 are self-positioned; then release the rotary pressure head 43, and the rotary pressure head 43 presses against the valve core base 2 under the action of the telescopic component, so that the valve core base 2 and the valve core 1 are tightly pressed and not easy to separate; then use the welding robot to weld the outer seam of the joint surface of the valve core 1 and the valve core base 2. During this process, the driving motor 52 drives the three-jaw chuck 51 to rotate, and then drives the valve core 1 and the valve core base 2 to rotate, and cooperates with the welding robot to realize the outer seam welding of the joint surface in one circle, which is easy to operate, reduces the difficulty of welding, ensures the welding quality and improves the welding efficiency.

[0026] Reference Figures 3 to 5 The side wall of the jig seat 3 is provided with a locking hole, which is connected to the mounting hole 321. A locking bolt 33 is threadedly connected to the locking hole. One end of the locking bolt 33 extending into the locking hole can abut against the rod 11 inserted into the mounting hole 321. When the rod 11 of the valve core 1 is inserted into the mounting hole 321, the locking bolt 33 is tightened to abut against the rod 11, so that the valve core 1 and the jig seat 3 are relatively fixed to prevent the valve core 1 from falling off the jig seat 3, thereby ensuring the stability of the welding process.

[0027] Two support shafts 44 are provided at the bottom of the rotating pressure head 43, and the two support shafts 44 are symmetrically arranged on both sides of the bottom of the rotating pressure head 43. One end of the two support shafts 44 is fixedly connected to the support plate 41, and the outer peripheral surface of the end of the support shaft 44 away from the support plate 41 abuts against the outer peripheral surface of the valve core base 2 to be welded. The support shaft 44 plays an auxiliary supporting role for the valve core base 2 to ensure the stability of the valve core base 2 during the welding process.

[0028] Reference Figures 4 to 5The telescopic assembly includes a slider 42, a spring 46, a pull ring 47 and a connecting rod 45. One end of the rotary pressure head 43 passes through the slider 42 and is rotatably connected to the connecting rod 45. The rotary pressure head 43 is rotatably connected to the connecting rod 45, so that the three-jaw chuck 51 can smoothly drive the valve core 1 and the valve core base 2 to rotate. One end of the connecting rod 45 away from the rotary pressure head 43 passes through the support plate 41 and is fixedly connected to the pull ring 47. The connecting rod 45 is slidably connected to the support plate 41. The spring 46 is sleeved outside the connecting rod 45. One end of the spring 46 abuts against the slider 42, and the other end abuts against the support plate 41. Two support shafts 44 are passed through the bottom of the slider 42. The support shaft 44 is slidably connected to the slider 42, and the support shaft 44 plays a guiding role in the movement of the slider 42. When the telescopic assembly is in use, the pull ring 47 can be pulled, and the pull ring 47 drives the rotating pressure head 43 to move away from the three-jaw chuck 51 through the connecting rod 45. At this time, the spring 46 is in a compressed state, thereby providing space for the installation of the valve core base 2; then the pull ring 47 is released, and under the elastic force of the spring 46, the rotating pressure head 43 is pressed against the valve core base 2, thereby making the valve core base 2 fit tightly against the valve core 1.

[0029] The working principle of the welding jig for the valve core and valve core base of the gas cylinder valve of the utility model is as follows: when welding the valve core 1 and the valve core base 2, first insert the rod body 11 of the valve core 1 into the mounting hole 321 of the jig seat 3, tighten the locking bolt 33, so that the valve core 1 and the jig seat 3 are relatively fixed; then pull the pull ring 47, and the pull ring 47 drives the rotating pressure head 43 to move away from the three-jaw chuck 51 through the connecting rod 45, so as to provide space for the installation of the valve core base 2, and the spring 46 is in a compressed state at this time. The valve core base 2 is installed at the end seat 12 of the valve core 1, so that the ring platform 211 at the edge of the base 21 is embedded in the corresponding ring groove 13 at the edge of the end seat 12, and the valve core 1 and the valve core base 2 are self-positioned; then loosen the pull ring 47, and under the elastic force of the spring 46, the rotating pressure head 43 is pressed against the valve core base 2, and then the valve core base 2 and the valve core 1 are pressed against each other. Subsequently, a welding robot is used to weld the outer seam of the joint surface between the valve core 1 and the valve core base 2. During this process, the driving motor 52 drives the three-jaw chuck 51 to rotate, and then drives the valve core 1 and the valve core base 2 to rotate, and cooperates with the welding robot to achieve a circle of welding of the outer seam of the joint surface. The operation is simple, the welding difficulty is reduced, the welding quality is guaranteed, and the welding efficiency is improved.

[0030] 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 valve core base of a gas cylinder valve, characterized in that: It comprises a fixture seat (3) and a pressure head mechanism (4); one end surface of the fixture seat (3) is provided with a mounting hole (321) for inserting a rod body (11) of a valve core (1); the fixture seat (3) is mounted on a chuck device (5) when in use; The chuck device (5) comprises a mounting seat (53), a driving motor (52) and a three-jaw chuck (51) arranged on the mounting seat (53); the axis of the three-jaw chuck (51) is arranged horizontally when in use; the fixture seat (3) is clamped on the three-jaw chuck (51); the driving motor (52) is connected to the three-jaw chuck (51) and can drive the three-jaw chuck (51) to rotate; The pressure head mechanism (4) is arranged on a side of the fixture seat (3) away from the three-jaw chuck (51), and the pressure head mechanism (4) comprises a support plate (41), a rotating pressure head (43) and a telescopic assembly, wherein the telescopic assembly is mounted on the support plate (41), and the rotating pressure head (43) is rotatably connected to the telescopic assembly; under the elastic force of the telescopic assembly, the rotating pressure head (43) can abut against the valve core base (2) mounted on the end seat (12).

2. The welding jig for the valve core and valve core base of a gas cylinder valve according to claim 1, characterized in that: A locking hole is formed on the side wall of the fixture seat (3), the locking hole being in communication with the mounting hole (321), a locking bolt (33) being threadedly connected to the locking hole, and one end of the locking bolt (33) extending into the locking hole can abut against the rod body (11) inserted into the mounting hole (321).

3. A welding jig for a valve core and a valve core base of a gas cylinder valve according to claim 1 or 2, characterized in that: Two support shafts (44) are arranged at the bottom of the rotating pressure head (43), and the two support shafts (44) are symmetrically arranged on both sides of the bottom of the rotating pressure head (43). One end of the two support shafts (44) is fixedly connected to the support plate (41), and the outer peripheral surface of one end of the support shaft (44) away from the support plate (41) abuts against the outer peripheral surface of the valve core base (2) to be welded.

4. The welding jig for the valve core and valve core base of a gas cylinder valve according to claim 3, characterized in that: The telescopic assembly comprises a slider (42), a spring (46), a pull ring (47) and a connecting rod (45); one end of the rotating pressure head (43) passes through the slider (42) and is rotatably connected to the connecting rod (45); one end of the connecting rod (45) away from the rotating pressure head (43) passes through the support plate (41) and is fixedly connected to the pull ring (47); the connecting rod (45) is slidably connected to the support plate (41); the spring (46) is sleeved outside the connecting rod (45); one end of the spring (46) abuts against the slider (42) and the other end abuts against the support plate (41); the two support shafts (44) are passed through the bottom of the slider (42); the support shafts (44) are slidably connected to the slider (42).

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