Welding tool for metal tube float flowmeter

Abstract

The invention discloses a welding tool for a metal tube float flowmeter, and relates to the technical field of welding tools. The metal pipe float flowmeter welding tool comprises a workbench, the top of the workbench is fixedly connected with a positioning and pushing mechanism, and the end of the positioning and pushing mechanism is fixedly connected with a fixing mechanism. According to the welding tool for the metal pipe float flowmeter, through the arrangement of the fixing mechanism, a hydraulic cylinder drives a sliding plate to slide, the sliding plate drives a rotary disc to rotate through an L-shaped plate, and the rotary disc drives the other three sliding plates to move through an L-shaped rod, so that four connecting blocks move to clamp a gear; the fixing block can clamp the outer wall of the flange plate, so that the flange plate can be stably fixed, the welding precision is improved, the welding quality and efficiency are also improved, the flange plates of different sizes can be clamped, and clamping and loosening of the rotating clamping plate can be controlled through the rotating switch.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of welding tooling, in particular to a metal tube float flowmeter welding tooling. BACKGROUND

[0002] The float of the metal tube float flowmeter is in the measuring tube, and as the flow changes, the float is moved upward, and at a certain position, the buoyancy of the float and the gravity of the float reach balance. At this time, the flow area of the annular gap between the float and the orifice plate (or conical tube) remains constant. The annular gap area is proportional to the rising height of the float, that is, the position of the float rising in the measuring tube represents the size of the flow, and the position of the float is transmitted to the external indicator by the internal magnet, so that the indicator correctly indicates the flow value at this time;

[0003] Refer to Chinese patent No. CN209380122U, which discloses a metal tube float flowmeter welding tooling, comprising a rack, a slide rail is arranged on the rack, one end of the slide rail is fixedly connected with a fixed seat, the other end is slidably connected with a moving seat, a rotating device is arranged on the opposite side of the fixed seat and the moving seat, and the two rotating devices are coaxially arranged, a positioning device is slidably connected on the slide rail, and the positioning device is located between the fixed seat and the moving seat; the positioning seat comprises a bottom plate slidably connected with the track, one end of the bottom plate is fixedly connected with a sleeve, and the sleeve is arranged at an acute angle with the bottom plate, a connecting block is slidably connected in the sleeve, a positioning column is fixedly connected vertically on the connecting block, and positioning cones are fixedly connected at both ends of the positioning column, and a locking device for fixing the connecting block is arranged on the sleeve;

[0004] The patent solves the problem of coaxial positioning of the mounting holes of the flanges at both ends of the measuring tube before welding, but the existing welding tooling has poor clamping effect, and the temperature of the welded part is low in winter, which is not suitable for welding, so the welding precision and effect of the metal tube and the flange cannot be higher, and the effect is better, so it is necessary to invent a metal tube float flowmeter welding tooling with stable clamping and preheating function. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a metal tube float flowmeter welding tooling to solve the problems raised in the background art.

[0006] To achieve the above purpose, the present application is realized by the following technical scheme: a metal tube float flowmeter welding tooling, comprising a workbench, a table leg is fixedly connected to the bottom of the workbench, a positioning and pushing mechanism is fixedly connected to the top of the workbench, a clamp is fixedly connected to the top of the positioning and pushing mechanism, a clamping opening is arranged in the interior of the clamp, a fixing mechanism is fixedly connected to the end of the positioning and pushing mechanism, and an angle adjusting mechanism is fixedly connected to the side of the fixing mechanism.

[0007] The fixing mechanism comprises:

[0008] The hydraulic cylinder is externally clamped with a protection platform, the output end of the hydraulic cylinder is fixedly connected with a push rod, the top of the push rod is fixedly connected with a push block, the side surface of the push block is fixedly connected with a connecting shaft, the end of the connecting shaft away from the push block is fixedly connected with a connecting piece, the side of the connecting piece away from the connecting shaft is fixedly connected with a sliding plate, the end of the sliding plate away from the connecting piece is rotatably connected with an L-shaped rod, the end of the L-shaped rod away from the sliding plate is rotatably connected with a rotating disc, the shaft center of the rotating disc is rotatably connected with a large rotating shaft, the sliding plate is provided with four, the side of the sliding plate away from the connecting piece is fixedly connected with a long sliding block, the outer side of the long sliding block is slidably connected with a cross plate, the bottom of the cross plate is fixedly connected with a fixed plate, the bottom of the fixed plate is fixedly connected with a connecting rod, the side surface of the long sliding block is fixedly connected with a connecting block, the end of the connecting block away from the long sliding block is fixedly connected with a rotating block, the inner side of the rotating block is rotatably connected with a rotating clamp plate, the inside of the rotating clamp plate is provided with an empty slot, the inside of the empty slot is rotatably connected with a rotating shaft one, the end of the rotating shaft one away from the long sliding block is fixedly connected with a switch, the end of the rotating clamp plate away from the rotating connecting block is fixedly connected with a rubber protection pad, the inner side of the rotating clamp plate is fixedly connected with a fixed block, the outer side of the cross plate is fixedly connected with a fixed rod, the end of the fixed rod away from the cross plate is fixedly connected with a transmission pipe, the transmission pipe is provided with four, the end of the transmission pipe is fixedly connected with a blowing port, the end of the transmission pipe away from the blowing port is fixedly connected with a transfer box, the side surface of the transfer box is fixedly connected with a heater.

[0009] Preferably, the positioning and pushing mechanism comprises a straight sliding rail, the side surface of the straight sliding rail is fixedly connected with a limiting block, the limiting block is provided with a plurality of, the inner side of the straight sliding rail is slidably connected with a sliding table, the top of the sliding table is fixedly connected with a spring, the spring is provided with two, the end of the spring away from the sliding table is fixedly connected with a lifting block, the bottom of the lifting block is fixedly connected with a pull rod, the bottom of the pull rod is fixedly connected with a positioning block, the side surface of the sliding table is fixedly connected with a fixed sheet, the fixed sheet is provided with two, the end of the fixed sheet away from the sliding table is fixedly connected with a small sliding rail, the inner side of the small sliding rail is slidably connected with a resisting block, the bottom of the straight sliding rail is fixedly connected with an air cushion box, the inside of the air cushion box is provided with a long air cushion, the bottom of the sliding table is fixedly connected with an extrusion plate, the end of the long air cushion away from the extrusion plate is fixedly connected with a U-shaped pipe, the middle of the U-shaped pipe is fixedly connected with a straight pipe.

[0010] Preferably, the angle adjusting mechanism comprises a mounting block, the side surface of the mounting block is fixedly connected with a circular sliding rail, the inner side of the circular sliding rail is slidably connected with a circular sliding block, the end of the circular sliding block away from the mounting block is fixedly connected with a vacuum suction disc, the vacuum suction disc is provided with four.

[0011] The application provides a metal pipe float flowmeter welding tool.

[0012] 1. The metal pipe float flowmeter welding tool, through the setting of the fixing mechanism, the hydraulic cylinder is started, the hydraulic cylinder drives the sliding plate to slide, the sliding plate drives the rotating disc to rotate through the L-shaped plate, the rotating disc drives the remaining three sliding plates to move through the L-shaped rod, so that the four connecting blocks move to clamp the gear, since the connecting blocks are internally provided with fixing blocks, the fixing blocks can clamp the outer wall of the flange plate, so that the flange plate can be more stably fixed, sliding and falling of the flange plate are avoided, accidents during processing are avoided, the welding precision is improved, the welding quality and efficiency are improved, and flange plates of different sizes can be clamped, the clamping and loosening of the rotating clamping plate can be controlled through the rotating switch, since the rotating clamping plate is internally provided with a rubber protective pad, the flange plate is protected, and different sizes of flange plates can be more tightly clamped due to the elasticity.

[0013] 2. The metal pipe float flowmeter welding tool, through the setting of the positioning pushing mechanism, the lifting block is pressed to drive the positioning block to disengage from the limiting block, the resisting block is then moved above the lifting block to clamp the lifting block at the position, the slide table is then moved to slide the clamp to an appropriate position and move away the resisting block, the positioning block is restored to the original position and clamped between the two limiting blocks under the action of the spring, so that positioning is realized, the metal pipe clamped by the clamp can be fixed at the position, sliding during welding is avoided, welding is not accurate, the clamp can be accurately pushed to an appropriate position, welding is facilitated, and the welding effect is better.

[0014] 3. The metal pipe float flowmeter welding tool, through the setting of the long air cushion and the air blowing pipe, the extrusion plate can be driven to move when the slide table moves, the extrusion plate moving can extrude the long air cushion to compress air to generate airflow, the airflow enters the transfer box through the U-shaped pipe and the straight pipe, in winter, when the temperature is too low, the welding piece is not suitable for direct welding, and needs to be heated, therefore, the heater is started to make the air in the transfer box become hot air, the hot air in the transfer box is blown out through the air blowing pipe driven by the long air cushion, so that the welding piece is preheated, the welding piece cannot be too low in temperature to weaken the welding effect, dust on the outside of the welding piece can be removed to a certain extent, and the welding is not affected, so that the welding effect is better and the precision is higher.

[0015] 4、The metal tube float flowmeter welding tool, through the setting of the angle adjusting mechanism, the vacuum chuck can adsorb the flange plate, pre-fixing is carried out, the rotating clamp plate in the fixing mechanism is opened, the rotating slide block can be rotated in the smooth rail, thereby the welding angle of the flange plate is adjusted, the staff welding operation is facilitated, thereby the precision can be improved, the flange plate can not be taken down and reassembled, and the welding efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is whole structure schematic view of the present application;

[0017] Figure 2 It is whole internal structure schematic view of the present application;

[0018] Figure 3 It is angle adjusting mechanism structure schematic view of the present application;

[0019] Figure 4 It is fixed mechanism back structure schematic view of the present application;

[0020] Figure 5 It is fixed mechanism structure schematic view of the present application;

[0021] Figure 6 It is the enlarged view of A in the present application; Figure 5

[0022] Figure 7 It is positioning push mechanism structure schematic view of the present application;

[0023] Figure 8 It is the enlarged view of B in the present application; Figure 7

[0024] Figure 9 It is positioning push mechanism internal structure schematic view of the present application.

[0025] ​​In the figure: 1, workbench; 2, table leg; 3, angle adjusting mechanism; 301, round slider; 302, vacuum chuck; 303, round sliding rail; 304, mounting block; 4, fixing mechanism; 401, hydraulic cylinder; 402, push rod; 403, connecting shaft; 404, push block; 405, connecting piece; 406, cross plate; 407, long slider; 408, connecting block; 409, sliding plate; 410, L-shaped rod; 411, turntable; 412, large rotating shaft; 413, fixed plate; 414, connecting rod; 415, rotating block; 416, rotating clamp plate; 417, hollow groove; 418, rotating shaft I; 419, switch; 420, fixed block; 421, rubber protective pad; 422, protective table; 423, transfer box; 424, heater; 425, transmission pipe; 426, fixed rod; 427, air blowing port; 5, positioning and pushing mechanism; 501, straight sliding rail; 502, sliding table; 503, air cushion box; 504, limiting block; 505, spring; 506, pull rod; 507, pull block; 508, small sliding rail; 509, abutting block; 510, fixed piece; 511, U-shaped pipe; 512, straight pipe; 513, long air cushion; 514, extrusion plate; 515, positioning block; 6, clamp; 7, clamping opening. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments of the present application.

[0027] Examples of the embodiments are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0028] Embodiment one

[0029] Please refer to Figures 1-3 The present application provides a technical solution: a metal pipe float flowmeter welding tool, which comprises a workbench 1, the bottom of the workbench 1 is fixedly connected with a table leg 2, the top of the workbench 1 is fixedly connected with a positioning and pushing mechanism 5, the top of the positioning and pushing mechanism 5 is fixedly connected with a clamp 6, the inside of the clamp 6 is provided with a clamping opening 7, the end of the positioning and pushing mechanism 5 is fixedly connected with a fixing mechanism 4, and the side of the fixing mechanism 4 is fixedly connected with an angle adjusting mechanism 3.

[0030] The angle adjusting mechanism 3 comprises a mounting block 304, the side surface of the mounting block 304 is fixedly connected with a round slide rail 303, the inner side of the round slide rail 303 is slidably connected with a round slide block 301, the end of the round slide block 301 away from the mounting block 304 is fixedly connected with a vacuum chuck 302, the vacuum chuck 302 is provided with four, the vacuum chuck 302 can adsorb the flange plate, the round slide block 301 is rotated in the round slide rail 303 by rotating the round slide block 301, thereby the welding angle of the flange plate is adjusted.

[0031] In use, the vacuum chuck 302 can adsorb the flange plate, pre-fixing is carried out, and the rotating clamp plate 416 in the fixing mechanism 4 is opened, the round slide block 301 is rotated in the round slide rail 303 by rotating the round slide block 301, thereby the welding angle of the flange plate is adjusted, the welding position is better.

[0032] Embodiment two

[0033] Please refer to Figures 1-9 On the basis of the embodiment one, the application provides a technical scheme:

[0034] The fixing mechanism 4 comprises:

[0035] The hydraulic cylinder 401, the outer side of the hydraulic cylinder 401 is clamped with the protection platform 422, the output end of the hydraulic cylinder 401 is fixedly connected with the push rod 402, the top of the push rod 402 is fixedly connected with the push block 404, the side surface of the push block 404 is fixedly connected with the connecting shaft 403, the end, away from the push, of the connecting shaft 403 is fixedly connected with the connecting piece 405, the side, away from the connecting piece 405, of the connecting piece 405 is fixedly connected with the sliding plate 409, the end, away from the connecting piece 405, of the sliding plate 409 is rotatably connected with the L-shaped rod 410, the end, away from the sliding plate 409, of the L-shaped rod 410 is rotatably connected with the rotating disc 411, the shaft center of the rotating disc 411 is rotatably connected with the large rotating shaft 412, the sliding plate 409 is provided with four, the side, away from the connecting piece 405, of the sliding plate 409 is fixedly connected with the long sliding block 407, the outer side of the long sliding block 407 is slidably connected with the cross plate 406, the bottom of the cross plate 406 is fixedly connected with the fixed plate 413, the bottom of the fixed plate 413 is fixedly connected with the connecting rod 414, the side surface of the long sliding block 407 is fixedly connected with the connecting block 408, the end, away from the long sliding block 407, of the connecting block 408 is fixedly connected with the rotating block 415, the inner side of the rotating block 415 is rotatably connected with the rotating clamp plate 416, the inside of the rotating clamp plate 416 is provided with the air slot 417, the inside of the air slot 417 is rotatably connected with the rotating shaft one 418, the end, away from the long sliding block 407, of the rotating shaft one 418 is fixedly connected with the switch 419, the end, away from the rotating connecting block 408, of the rotating clamp plate 416 is fixedly connected with the rubber protection pad 421, the inner side of the rotating clamp plate 416 is fixedly connected with the fixed block 420, the outer side of the cross plate 406 is fixedly connected with the fixed rod 426, the end, away from the cross plate 406, of the fixed rod 426 is fixedly connected with the transmission pipe 425, the transmission pipe 425 is provided with four, the end of the transmission pipe 425 is fixedly connected with the blowing port 427, the end, away from the blowing port 427, of the transmission pipe 425 is fixedly connected with the transfer box 423, the side surface of the transfer box 423 is fixedly connected with the heater 424, the hydraulic cylinder 401 is started, the hydraulic cylinder 401 drives the push rod 402 to move, the push rod 402 drives the push block 404 to move, the push block 404 drives the connecting piece 405 to move through the connecting shaft 403, the connecting piece 405 drives the sliding plate 409 to slide in the cross plate 406, the sliding plate 409 drives the rotating disc 411 to rotate through the L-shaped plate, the rotating disc 411 drives the rotating disc 411 to rotate outside the large rotating shaft 412 through the L-shaped rod 410, the rotating disc 411 drives the remaining three sliding plates 409 to move through the L-shaped rod 410, the sliding plate 409 drives the long sliding block 407 to move, the long sliding block 407 drives the connecting block 408 to move, the connecting block 408 drives the rotating clamp plate 416 to move, so that the four connecting blocks 408 move and clamp the gear, because the fixed block 420 is arranged in the connecting block 408, the fixed block 420 can clamp the notch of the gear, the rotating switch 419 in the air slot 417 of the rotating clamp plate 416 can control the clamping and loosening of the rotating clamp plate 416, the inner side of the rotating clamp plate 416 is provided with the rubber protection pad 421.

[0036] The positioning pushing mechanism 5 comprises a straight slide rail 501, the side surface of the straight slide rail 501 is fixedly connected with a limiting block 504, a plurality of limiting blocks 504 are arranged, the inner side of the straight slide rail 501 is slidably connected with a sliding table 502, the top of the sliding table 502 is fixedly connected with a spring 505, two springs 505 are arranged, the end, away from the sliding table 502, of the spring 505 is fixedly connected with a pulling block 507, the bottom of the pulling block 507 is fixedly connected with a pull rod 506, the bottom of the pull rod 506 is fixedly connected with a positioning block 515, the side surface of the sliding table 502 is fixedly connected with a fixed sheet 510, two fixed sheets 510 are arranged, the end, away from the sliding table 502, of the fixed sheet 510 is fixedly connected with a small slide rail 508, the inner side of the small slide rail 508 is slidably connected with a resisting block 509, the bottom of the straight slide rail 501 is fixedly connected with an air cushion box 503, the inside of the air cushion box 503 is provided with a long air cushion 513, the bottom of the sliding table 502 is fixedly connected with an extrusion plate 514, the end, away from the extrusion plate 514, of the long air cushion 513 is fixedly connected with a U-shaped pipe 511, the middle of the U-shaped pipe 511 is fixedly connected with a straight pipe 512, the pulling block 507 is pressed to drive the pull rod 506 to be pressed down, the pull rod 506 drives the positioning block 515 to be separated from the limiting block 504, then the resisting block 509 is moved above the pulling block 507 through the small slide rail 508 to clamp the pulling block 507 at the position, then the sliding table 502 is moved to slide the clamp 6 to the appropriate position and then the resisting block 509 is moved away, under the action of the spring 505, the positioning block 515 returns to the original position and is clamped between the two limiting blocks 504 to realize positioning, at the same time, the extrusion plate 514 can be moved when the sliding table 502 is moved, the movement of the extrusion plate 514 can extrude the long air cushion 513 to compress air to generate air flow, the air flow enters the transfer box 423 through the U-shaped pipe 511 and the straight pipe 512, when the welding piece needs to be preheated in winter, the heater 424 is started, the hot air in the transfer box 423 is blown out from the air blowing port 427 through the transmission pipe 425, when preheating is not needed, air is directly blown out to process dust blowing.

[0037] In use, the hydraulic cylinder 401 is activated, causing the slide plate 409 to slide. The slide plate 409 drives the turntable 411 to rotate via the L-shaped plate. The turntable 411 drives the other three slide plates 409 to move via the L-shaped rod 410, thereby causing the four connecting blocks 408 to move and lock the gear. Since the connecting block 408 has a fixing block 420 inside, the fixing block 420 can lock the outer wall of the flange, thus fixing the flange more stably and preventing the flange from sliding off. After the flange is fixed, press the lifting block 507 to drive the pull rod 506 down. The pull rod 506 drives the positioning block 515 to disengage from the limit block 504. Then, move the abutment block 509 above the lifting block 507 via the small slide rail 508 to lock the lifting block 507 in this position. Then move the slide... After the sliding table 502 slides the clamp 6 to the appropriate position, it moves away the stop block 509. Under the action of the spring 505, the positioning block 515 returns to its original position and is locked between the two limit blocks 504 to achieve positioning. At the same time, when the sliding table 502 moves, it can drive the extrusion plate 514 to move. The movement of the extrusion plate 514 will squeeze the long air cushion 513 to compress the air and generate airflow. The airflow enters the transfer box 423 through the U-shaped tube 511 and the straight tube 512. When the temperature is too low in winter, the welded parts are not suitable for direct welding and need to be heated. Therefore, the heater 424 can turn the air inside the transfer box 423 into hot air. The long air cushion 513 blows the hot air inside the transfer box 423 and blows it out through the air blowing pipe for preheating. When preheating is not required, the gas is directly blown out to treat the dust.

[0038] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A welding fixture for a metal tube float flowmeter, comprising a workbench (1), characterized in that: The bottom of the workbench (1) is fixedly connected to a table leg (2), the top of the workbench (1) is fixedly connected to a positioning and pushing mechanism (5), the top of the positioning and pushing mechanism (5) is fixedly connected to a clamp (6), the clamp (6) has a clamping port (7) inside, the end of the positioning and pushing mechanism (5) is fixedly connected to a fixing mechanism (4), and the side of the fixing mechanism (4) is fixedly connected to an angle adjustment mechanism (3). The fixing mechanism (4) includes: A hydraulic cylinder (401) is attached to a protective platform (422) on its outer side. A push rod (402) is fixedly connected to the output end of the hydraulic cylinder (401). A push block (404) is fixedly connected to the top of the push rod (402). A connecting shaft (403) is fixedly connected to the side of the push block (404). A connector (405) is fixedly connected to the end of the connecting shaft (403) away from the push-open end. A slide plate (409) is fixedly connected to the side of the connector (405) away from the connecting shaft (403). An L-shaped rod (410) is rotatably connected to the end of the slide plate (409) away from the connector (405). A turntable (411) is rotatably connected to the end of the L-shaped rod (410) away from the slide plate (409). A large rotating shaft (412) is rotatably connected to the axis of the turntable (411). There are four slide plates (409).

2. The welding fixture for a metal tube float flowmeter according to claim 1, characterized in that: A long slider (407) is fixedly connected to the side of the slide plate (409) away from the connector (405). A cross plate (406) is slidably connected to the outside of the long slider (407). A fixing plate (413) is fixedly connected to the bottom of the cross plate (406). A connecting rod (414) is fixedly connected to the bottom of the fixing plate (413).

3. The welding fixture for a metal tube float flowmeter according to claim 2, characterized in that: A connecting block (408) is fixedly connected to the side of the long slider (407). A rotating block (415) is fixedly connected to the end of the connecting block (408) away from the long slider (407). A rotating clamp (416) is rotatably connected to the inner side of the rotating block (415). A slot (417) is provided inside the rotating clamp (416). A rotating shaft (418) is rotatably connected inside the slot (417). A switch (419) is fixedly connected to the end of the rotating shaft (418) away from the long slider (407). A rubber protective pad (421) is fixedly connected to the end of the rotating clamp (416) away from the rotating connecting block (408). A fixing block (420) is fixedly connected to the inner side of the rotating clamp (416).

4. The welding fixture for a metal tube float flowmeter according to claim 2, characterized in that: A fixing rod (426) is fixedly connected to the outside of the cross plate (406). A transmission pipe (425) is fixedly connected to the end of the fixing rod (426) away from the cross plate (406). There are four transmission pipes (425). An air outlet (427) is fixedly connected to the end of the transmission pipe (425). A transfer box (423) is fixedly connected to the end of the transmission pipe (425) away from the air outlet (427). A heater (424) is fixedly connected to the side of the transfer box (423).

5. The welding fixture for a metal tube float flowmeter according to claim 1, characterized in that: The positioning and pushing mechanism (5) includes a straight slide rail (501), a limiting block (504) is fixedly connected to the side of the straight slide rail (501), and multiple limiting blocks (504) are provided. A sliding table (502) is slidably connected to the inner side of the straight slide rail (501). A spring (505) is fixedly connected to the top of the sliding table (502), and two springs (505) are provided. A lifting block (507) is fixedly connected to the end of the spring (505) away from the sliding table (502). A pull rod (506) is fixedly connected to the bottom of the lifting block (507), and a positioning block (515) is fixedly connected to the bottom of the pull rod (506).

6. The welding fixture for a metal tube float flowmeter according to claim 5, characterized in that: A fixing plate (510) is fixedly connected to the side of the sliding table (502). There are two fixing plates (510). A small slide rail (508) is fixedly connected to the end of the fixing plate (510) away from the sliding table (502). A stop block (509) is slidably connected to the inner side of the small slide rail (508).

7. The welding fixture for a metal tube float flowmeter according to claim 5, characterized in that: An air cushion box (503) is fixedly connected to the bottom of the straight slide rail (501). The air cushion box (503) is provided with a long air cushion (513) inside. An extrusion plate (514) is fixedly connected to the bottom of the sliding table (502). A U-shaped tube (511) is fixedly connected to one end of the long air cushion (513) away from the extrusion plate (514). A straight tube (512) is fixedly connected to the middle of the U-shaped tube (511).

8. The welding fixture for a metal tube float flowmeter according to claim 1, characterized in that: The angle adjustment mechanism (3) includes a mounting block (304), a circular slide rail (303) is fixedly connected to the side of the mounting block (304), a circular slider (301) is slidably connected to the inner side of the circular slide rail (303), and a vacuum suction cup (302) is fixedly connected to one end of the circular slider (301) away from the mounting block (304). There are four vacuum suction cups (302).

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