Automatic welding clamp for high-pressure gas cylinder

Abstract

An automatic welding clamp for a high-pressure gas cylinder comprises a rotating base, a control box and a plurality of clamp bodies, the clamp bodies are fixed to the periphery of the rotating base, the automatic welding clamp comprises a clamp base, a pushing assembly, a positioner assembly, a positioning clamping block assembly, a front end positioning assembly and a clamping switch, and the pushing assembly, the positioner assembly, the positioning clamping block assembly, the front end positioning assembly and the clamping switch are arranged on the clamp base. The front end of the pushing assembly is connected with the positioner assembly, the front end of the positioner assembly is connected with the positioning clamping block assembly, the gas cylinder is fixed to the front end of the positioning clamping block assembly, and a connector of the gas cylinder is inserted into and extends out of the front-end positioning assembly. By pushing the positioning clamping block assembly to insert and buckle the gas cylinder, automatic clamping of the gas cylinder is achieved, the gas cylinder is firmly fixed to the clamp body, after welding is completed, the positioning clamping block assembly can be automatically pulled back to complete disassembly of the gas cylinder, and then the welded gas cylinder is automatically transferred to a welding station through cooperation of the rotary base and the clamp body. The welding robot is used for automatic welding, control and positioning precision is high, welding quality is stable, and the device is suitable for batch production.

Description

TECHNICAL FIELD

[0001] The utility model relates to a gas cylinder processing technical field, especially a high pressure gas cylinder automatic welding fixture. BACKGROUND

[0002] The ground gas cylinder is a kind of light stainless steel high-pressure gas storage bottle, which is used as a long-acting energy power reserve and is mainly applied in the field of aerospace. Since the ground gas cylinder has special requirements on pressure resistance, explosion prevention and sealing performance, the ground gas cylinder needs to be laser welded at the contact position between the cylinder mouth and the inflation plug assembly after high-pressure gas filling, so as to play the role of reinforcement and secondary sealing.

[0003] For the laser welding process at the connection position between the cylinder mouth and the inflation plug assembly of the ground gas cylinder, the traditional manual operation is generally adopted. However, since the high-pressure gas (pressure up to 39Mpa) in the bottle body is dangerous, manual operation may cause the high-pressure gas to leak due to improper operation, thereby causing harm to the operator and equipment, which is a dangerous source. The specific problems are as follows:

[0004] 1. The welding quality control of manual operation depends on the personnel quality, which is unstable;

[0005] 2. Manual operation is relatively complex, and the positioning process of accessories is complex and time-consuming, with high failure rate, which is not conducive to improving production efficiency;

[0006] 3. In the process of manual operation, the personnel and equipment are close to the bottle body with high-pressure gas, and the protective measures cannot completely isolate the danger caused by leakage, which has great potential safety hazard in production. SUMMARY

[0007] The utility model aims to provide an automatic high-efficiency, easy-to-operate and stable-safety-guaranteed high-pressure gas cylinder automatic welding fixture for the laser welding process of the ground gas cylinder with high-pressure gas, so as to overcome the above-mentioned problems of the prior art.

[0008] The utility model adopts the technical scheme of a kind of high pressure gas cylinder automatic welding fixture, including rotating base and multiple fixture main body, still including the control box for carrying out pneumatic control and electric control, multiple fixture main body is fixed around rotating base outer periphery, fixture main body includes fixture base and the pusher assembly, variator assembly, positioning block assembly and front end positioning assembly arranged on fixture base, the pusher assembly front end is connected variator assembly, variator assembly front end is connected positioning block assembly, positioning block assembly front end fixed gas cylinder, gas cylinder interface inserts and extends front end positioning assembly;

[0009] The control box is arranged on the rotating base and is electrically connected with the pushing assembly and the positioner assembly.

[0010] Further, the rotating base comprises a rotating fixing base and a plurality of fixing reinforcing plates, and the plurality of fixing reinforcing plates are connected with the rotating fixing base and the plurality of clamp bodies respectively.

[0011] Further, the clamp body further comprises a clamping switch, and the clamping switch is arranged on the clamp base 21 and is electrically connected with the control box.

[0012] Further, the pushing assembly comprises a pushing cylinder and a pushing connecting piece, the pushing cylinder is fixed on the clamp base through a cylinder fixing base, the output end of the pushing cylinder is connected with the pushing connecting piece, and the other end of the pushing connecting piece is fixed with the positioner assembly.

[0013] Further, the positioner assembly comprises a positioner and a positioner fixing base, the rear end of the positioner is connected with the pushing assembly, the front end of the positioner is connected with a positioning block assembly through a rotating shaft, a guide rail is arranged on the clamp base, a sliding block is arranged on the guide rail, and the positioner is fixed with the sliding block through the positioner fixing base, so that the positioner assembly can slide forward and backward along the guide rail.

[0014] Further, the positioning block assembly comprises a block and a positioning pin, the rear end of the block is fixed with the positioner assembly, the front end of the block is clamped with the outer circle of the tail part of the gas cylinder, and the positioning pin is arranged on the middle part of the block and is inserted into the positioning hole of the tail part of the gas cylinder to be fixed.

[0015] Further, the front end positioning assembly comprises a positioning base and a positioning bearing, the positioning base is fixed with the clamp base, and the positioning bearing is arranged on the middle part of the upper end of the positioning base, and the interface of the gas cylinder is inserted into and extends out of the positioning bearing.

[0016] Further, the rotating base is hexagonal, and the clamp body is three, which are uniformly distributed on the edges of the hexagon with the rotating base as the center.

[0017] Further, the clamp body is provided with a position sensor, the control box comprises a gas control module and an electric control module, the gas control module is electrically connected with the clamping switch, and the electric control module is electrically connected with the position sensor, the pushing assembly, the positioner assembly and the total control outside the workstation.

[0018] Due to the above technical scheme, the high-pressure gas cylinder automatic welding clamp has the following beneficial effects:

[0019] 1. The rotating base and the clamp body are matched to automatically transfer the welding gas cylinder into the welding station, the welding robot is used for automatic welding, the control positioning precision is high, the welding quality is stable, and the automatic welding clamp is suitable for batch production.

[0020] 2. The utility model discloses a three fixture main body cooperation, is located operation station, waiting station and welding station respectively, and the fixture main body on the rotation to operation station is taken and is clamped by the gas cylinder by the operator, rotates to waiting station later, after the gas cylinder on the welding station is welded, welds again and rotates the next gas cylinder, and the gas cylinder that welds completes is transferred to operation station and takes and clamps new welding piece, and the operation process is simple, and the clamping time is short, and the intelligent degree, automation degree is high, and the production efficiency is high;

[0021] 3. The utility model discloses a control box is arranged, and the working process adopts system automatic control, and the operator is away from the welding station, avoids the danger caused by welding radiation and gas cylinder leakage, and production safety is effectively guaranteed;

[0022] 4. The utility model discloses the cooperation of pusher assembly, positioner assembly, positioning block assembly and front end positioning assembly, and push positioning block assembly inserts and buckles gas cylinder, realizes the automatic clamping of gas cylinder, and firmly fixes gas cylinder on fixture main body, and after welding, can also automatic pullback positioning block assembly, completes the disassembly of gas cylinder, realizes the intelligent operation of gas cylinder disassembly, further shorten the working time, improves the work efficiency;

[0023] 5. The utility model discloses be used for fixing gas cylinder, clamps to the place, starts the equipment after determining that the operator leaves the welding station, and welding fixture automatically moves to the designated welding position according to the predetermined program, and welding equipment carries out automatic welding to gas cylinder spare part, and taking, clamping, welding can be completed simultaneously, and the whole automatic welding fixture forms the production flow of assembly line, and it is convenient for automatic management.

[0024] The technical features of the high-pressure gas cylinder automatic welding fixture of the utility model will be further described below in combination with the drawings and embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the high-pressure gas cylinder automatic welding fixture structure schematic view (top view) of the utility model;

[0026] Figure 2 It is the rotating base structure schematic view of the utility model;

[0027] Figure 3 It is the fixture main body side surface structure schematic view of the utility model;

[0028] Figure 4 It is the pusher assembly three-dimensional structure schematic view of the utility model;

[0029] Figure 5 It is the pusher cylinder three-dimensional structure schematic view of the pusher assembly of the utility model;

[0030] Figure 6This is a three-dimensional structural diagram of the pushing connector of the pushing assembly of this utility model;

[0031] Figure 7 This is a three-dimensional structural diagram of the positioner assembly of this utility model;

[0032] Figure 8 This is a three-dimensional structural diagram of the positioning block assembly of this utility model;

[0033] Figure 9 This is a side sectional view of the positioning block assembly of this utility model;

[0034] Figure 10 This is a schematic diagram (side view) of the front positioning component structure of this utility model.

[0035] Figure 11 This is a schematic diagram (front view) of the front positioning component structure of this utility model.

[0036] In the picture:

[0037] 1—Rotating base, 11—Rotating fixed seat, 12—Fixed reinforcing plate, 2—Clamp body, 21—Clamp base, 22—Push assembly, 221—Push cylinder, 222—Push connector, 223—Cylinder fixed seat, 23—Positioner assembly, 231—Positioner, 232—Positioner fixed seat, 24—Positioning block assembly, 241—Block, 242—Positioning pin, 25—Front-end positioning assembly, 251—Positioning seat, 252—Positioning bearing, 26—Clamping switch, 27—Guide rail, 28—Slider, 3—Control box, 4—Gas cylinder. Detailed Implementation

[0038] Example 1

[0039] An automatic welding fixture for high-pressure gas cylinders, such as Figure 1 As shown, it includes a rotating base 1 and three clamping bodies 2, and also includes a control box 3 for pneumatic and electric control. The rotating base 1 is hexagonal and includes a rotating fixed seat 11 and three fixed reinforcing plates 12 (see...). Figure 2 The three fixed reinforcing plates 12 are evenly distributed at 120° on the three hexagonal sides centered on the rotating base. The three clamp bodies are respectively fixed on the three fixed reinforcing plates 12 and can rotate with the rotating base 1. The control box 3 is located on the rotating base 1 and is electrically connected to the clamp body 2.

[0040] like Figure 3As shown, the clamp body 2 includes a clamp base 21, and a pushing assembly 22, a transducer assembly 23, a positioning block assembly 24, a front end positioning assembly 25 and a clamping switch 26 arranged on the clamp base 21. The clamp base 21 is provided with a guide rail 27, and the guide rail 27 is provided with a sliding block 28. The pushing assembly 22 is connected to the front end of the transducer assembly 23, the transducer assembly 23 is connected to the front end of the positioning block assembly 24, the lower end is connected and fixed with the sliding block 28, and can slide back and forth along the guide rail 27 to play a guiding and positioning role. The front end of the positioning block assembly 24 is fixed with the gas cylinder 4, the interface of the gas cylinder 4 is inserted into and extends out of the front end positioning assembly 25, and the clamping switch 26 is arranged at the front end of the clamp base 21 and is electrically connected with the control box 3.

[0041] As shown in Figure 4 , the pushing assembly 22 includes a pushing cylinder 221 and a pushing connecting piece 222. The pushing cylinder 221 is fixed on the clamp base 21 through a cylinder fixing seat 223. The pushing connecting piece 222 includes a nut and a connecting plate. The output end of the pushing cylinder 221 is threadedly connected with the pushing connecting piece 222 through the nut. The connecting plate of the pushing connecting piece 222 is fixed with the transducer assembly 23 at the other end. The pushing assembly is powered by the cylinder, which can indirectly make the positioning block assembly move back and forth to make clamping or resetting actions.

[0042] As shown in Figure 7 , the transducer assembly 23 includes a transducer 231 and a transducer fixing seat 232. The rear end of the transducer 231 is connected with the pushing connecting piece 222 of the pushing assembly 22. The front end rotating shaft of the transducer 231 is threadedly connected and fixed with the positioning block assembly 24. At the same time, the transducer 231 is connected and fixed with the sliding block 28 through the transducer fixing seat 232, so that the transducer assembly 23 can slide back and forth along the guide rail 27.

[0043] As shown in Figure 8 , Figure 9 , the positioning block assembly 24 includes a block 241 and a positioning pin 242. The rear end of the block 241 is fixed with the transducer rotating shaft, and the front end is fixed with the tail outer circle of the gas cylinder 4. The rear end of the positioning pin 242 is connected with the middle part of the block, and the front end is inserted into the positioning hole of the tail of the gas cylinder 4 for positioning.

[0044] As shown in Figure 10 , Figure 11 , the front end positioning assembly 25 includes a positioning seat 251 and a positioning bearing 252. The lower end of the positioning seat 251 is fixed with the clamp base 21, and the positioning bearing 252 is arranged at the middle part of the upper end of the positioning seat 251. The interface of the gas cylinder 4 is inserted into and extends out of the positioning bearing 252, and the extending part is a welding position corresponding to a welding robot.

[0045] The fixture body 2 is also provided with a position sensor, the control box 3 includes a pneumatic control module and an electric control module, the pneumatic control module is electrically connected with the clamping switch 26, and the electric control module is electrically connected with the position sensor, the pushing assembly 22, the positioner assembly 23 and the total control outside the workstation.

[0046] The front ends of the three fixture bodies 2 correspond to three working areas, namely an operation station, a waiting station and a welding station, the operation station is provided with a grating sensor for monitoring whether an operator enters or leaves the operation station and feeding back a signal to the control box.

[0047] Working process:

[0048] (1) Clamping at the operation station:

[0049] ①An operator enters the operation station, a grating monitoring signal is sent to the control box, the control box receives the signal sent by the grating, the pushing assembly of the fixture body at the operation station is pulled back, the transmission of the positioner assembly is driven to pull back the positioning block assembly, a reset movement is performed, the fixture is opened, and the operator takes out the welded gas cylinder;

[0050] ②A gas cylinder to be welded is positioned and installed on the positioning assembly at the front end of the fixture body, the clamping switch is pressed, the pushing assembly pushes the positioner assembly, the positioning block assembly is pushed forward, the positioning pin of the positioning block assembly is inserted into the positioning hole at the tail of the gas cylinder, the block of the positioning block assembly clamps the outer circle of the flat position at the tail of the gas cylinder, the clamping of the gas cylinder is completed, and the operator leaves the station;

[0051] (2) Welding at the welding station:

[0052] ①The welding fixture body is rotated to the welding station, after the control box receives the feedback signal of the position sensor, the positioner assembly of the fixture body is started to rotate, thereby driving the gas cylinder to rotate, and at the same time, the welding robot moves to the welding position at the welding station according to the program, and the laser welding gun is aligned with the welding position at the front end of the gas cylinder;

[0053] ②After the gas cylinder rotates for 0.3 seconds, the laser welding device is started to weld, the gas cylinder rotates for one circle to complete the laser welding, and after 0.2 seconds, the positioner assembly stops rotating, the welding robot is reset, and a welding completion signal is sent to the control box;

[0054] (3) Conversion of the fixture body:

[0055] ①After the control box receives the welding completion signal at the welding station, the clamping completion signal at the operation station and the grating signal that the operator leaves the operation station, the rotating base of the fixture is controlled to rotate by 120°, the working position is circulated to perform the next round of welding and clamping positioning process.

[0056] In summary, through relevant accounting, in comprehensive consideration of cost and production efficiency, three clamp bodies (A, B and C) are evenly distributed on the circumferential line of the rotating base at an angle of 120°, A among them is set as the welding station, i.e. the position of the laser welding machine arm, B at an angle of 120° counterclockwise is the waiting station of the welded piece (gas cylinder) in the waiting welding state, C at an angle of 120° counterclockwise from B is the working position of the operator for positioning and clamping the welded piece (gas cylinder), i.e. the operator station; the rotating base drives the rotation of the clamp body, so that the manufacturing process of the welded piece flows in the order of welding, waiting welding and positioning and clamping, and welding, clamping and taking can be completed simultaneously; the clamp body is provided with a cylinder along the axial direction of the gas cylinder to reciprocatingly push and complete the clamping and positioning of the gas cylinder and the disassembly of the gas cylinder; and the gas cylinder is rotated around the axis by a servo motor, and the circumferential welding of the gas cylinder is completed in the welding station and in linkage with the laser welding machine arm.

[0057] Embodiment Two

[0058] The high-pressure gas cylinder automatic welding clamp has basically the same structure as that of Embodiment One, except that the high-pressure gas cylinder automatic welding clamp does not include a rotating base, but includes a straight conveying belt, which drives the movement and transposition of a plurality of clamp bodies, and the straight conveying belt has a structure similar to that of a tank track; in operation, the plurality of clamp bodies are fixed on the straight conveying belt to form an operator station, a plurality of waiting stations and a welding station, and the plurality of stations are on the same plane platform; after welding is completed in the welding station, the plurality of stations move to the plane platform and finally return to the operator station under the driving of the conveying belt, so as to achieve the purpose of forming a flow line production process through the sequential flow of the stations.

[0059] The above embodiments are only preferred embodiments of the present application, and the structure of the present application is not limited to the forms listed in the above embodiments; any modification, equivalent replacement and the like made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An automatic welding fixture for high-pressure gas cylinders, characterized in that: The clamp comprises a rotating base (1) and a plurality of clamp bodies (2), and further comprises a control box (3) for pneumatic control and electric control, the plurality of clamp bodies (2) are fixed around the periphery of the rotating base (1), the clamp body (2) comprises a clamp base (21) and a pushing assembly (22), a positioner assembly (23), a positioning block assembly (24) and a front end positioning assembly (25) arranged on the clamp base (21), the front end of the pushing assembly (22) is connected with the positioner assembly (23), the front end of the positioner assembly (23) is connected with the positioning block assembly (24), the front end of the positioning block assembly (24) is fixed with a gas cylinder (4), and the interface of the gas cylinder (4) is inserted into and extends out of the front end positioning assembly (25). The control box (3) is arranged on the rotating base (1) and is electrically connected with the pushing assembly (22) and the positioner assembly (23).

2. The automatic welding fixture for high-pressure gas cylinder according to claim 1, characterized in that: The rotating base (1) comprises a rotating fixing seat (11) and a plurality of fixing reinforcing plates (12), and the plurality of fixing reinforcing plates (12) are connected with the rotating fixing seat (11) and the plurality of clamp bodies (2) respectively.

3. The automatic welding fixture for high-pressure gas cylinder according to claim 1, characterized in that: The clamp body (2) further comprises a clamping switch (26) arranged on the clamp base (21) and electrically connected with the control box (3).

4. The automatic welding fixture for high-pressure gas cylinder according to claim 1, characterized in that: The pushing assembly (22) comprises a pushing cylinder (221) and a pushing connecting piece (222), the pushing cylinder (221) is fixed on the clamp base (21) through a cylinder fixing seat (223), the output end of the pushing cylinder (221) is connected with the pushing connecting piece (222), and the other end of the pushing connecting piece (222) is fixed with the positioner assembly (23).

5. The automatic welding fixture for high-pressure gas cylinder according to claim 1, characterized in that: The positioner assembly (23) comprises a positioner (231) and a positioner fixing seat (232), the rear end of the positioner (231) is connected with the pushing assembly (22), and the front end is connected with the positioning block assembly (24) through a rotating shaft, a guide rail (27) is arranged on the clamp base (21), a sliding block (28) is arranged on the guide rail (27), the positioner (231) is connected and fixed with the sliding block (28) through the positioner fixing seat (232), so that the positioner assembly (23) can slide forward and backward along the guide rail (27).

6. The automatic welding fixture for high-pressure gas cylinder according to claim 1, characterized in that: The positioning block assembly (24) comprises a block (241) and a positioning pin (242), the rear end of the block (241) is fixed with the positioner assembly (23), and the front end is clamped with the tail outer circle of the gas cylinder (4), the positioning pin (242) extends from the middle of the block (241) and is inserted into the tail positioning hole of the gas cylinder (4) for fixation.

7. The automatic welding fixture for high-pressure gas cylinder according to claim 1, characterized in that: The front end positioning assembly (25) comprises a positioning seat (251) and a positioning bearing (252), the positioning seat (251) is fixed with the clamp base (21), and the positioning bearing (252) is arranged on the middle of the upper end of the positioning seat (251), and the interface of the gas cylinder (4) is inserted into and extends out of the positioning bearing (252).

8. The automatic welding fixture for high-pressure gas cylinder according to claim 2, characterized in that: The rotating base (1) is hexagonal, the clamp body (2) has three, and is uniformly distributed on the edges of the hexagon with the rotating base (1) as the center.

9. The automatic welding fixture for high-pressure gas cylinder according to claim 3, characterized in that: The position sensor is arranged on the clamp body (2), the control box (3) comprises a pneumatic control module and an electric control module, the pneumatic control module is electrically connected with the clamping switch (26), the electric control module is electrically connected with the position sensor, the pushing assembly (22), the position changer assembly (23) and the total control outside the work station.

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