CN111299949A - Clamping device for manual welding of small tank body and using method thereof - Google Patents

Abstract

The invention discloses a clamping device for manually welding a small tank body and a use method thereof, and relates to the technical field of manufacturing of metal tank bodies. The clamping device for manually welding the small tank body has the characteristics of reasonable structure, convenience in use, simplicity in manufacturing and maintenance and good practicability.

Description

Clamping device for manual welding of small tank body and using method thereof

technical field

The invention relates to the technical field of metal can body manufacturing, in particular to a clamping device for manual welding of small can bodies and a method of using the same.

Background technique

When the metal tank body is manufactured, the welding of the tank body girth weld is usually carried out by placing the tank body on the roller frame. During welding, the roller frame is required to rotate smoothly and evenly, so that the rolling speed of the driven tank body will be uniform and smooth. Only in this way can the welding quality of the tank body be guaranteed. However, when welding girth welds to small metal tanks, due to the internal stress at the welds of the tanks, they shrink and close to each other, while there is no stress at the unwelded areas of the tanks and they spread away from each other. Corresponding positioning and clamping tooling will not be set up. In order to ensure a better welding rhythm, the tank body on the roller frame is generally manually driven to rotate. Therefore, when welding small metal tanks, the welded tanks often have serious defects such as different weld widths and uneven welded tanks, which lead to the inability to guarantee the sealing quality and compressive strength of the welded tanks.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a clamping device for manual welding of small tanks and a method of using the same, so as to solve the above-mentioned defects caused in the prior art.

A clamping device for manual welding of small tanks, comprising a support plate, a support frame and a Foma wheel, the support plate is horizontally installed on the top of the support frame, and the Foma wheel is vertically installed at the bottom of the support frame, The middle of the support plate is provided with a rectangular installation groove, the left side of the installation groove is fixed with a fixed clamping component and used to clamp the upper half of the tank, and the right side of the installation groove is slidably provided with a movable clamping component and used for clamping. The lower half of the tank is clamped, the lower part of the installation groove is provided with a displacement rotation component and is used to drive the upper and lower half of the tank to rotate intermittently in a fixed direction at the same time, so as to complete the overturning requirements for the welding of the tank.

Preferably, the fixing and clamping assembly includes a mounting strip, an upper clamping plate and a lower clamping plate, two of the installation strips are arranged on the front and rear sides of the left side of the installation groove, and the lower clamping plate is in the shape of a circular arch and It is installed upside down on the front and rear mounting bars, the rear side of the lower clamping plate 1 is vertically installed with a C-shaped connecting plate 1, and the upper clamping plate 1 is in the shape of a circular arch and is installed on the top of the connecting plate 1 through a hinge. The inner walls of the upper clamp plate 1 and the lower clamp plate 1 are respectively equipped with a clamping wheel 1 and a clamping wheel 2, the front side of the lower clamp plate 1 is vertically installed with a C-shaped connecting plate 2, and the upper clamp plate is installed. A threaded rod 1 is installed on the front side of the 1 through a bearing, the top of the threaded rod 1 is fixedly installed with a hand wheel 1, and the threaded rod 1 can be threadedly connected with the top of the connecting plate 2.

Preferably, the moving clamping assembly includes a sliding rail, two upper clamping plates and two lower clamping plates, two of the sliding rails are installed on the front and rear sides of the right side of the installation groove, and sliding blocks are slidably installed on the sliding rails The second lower splint is in the shape of a circular arch and is installed upside down on the front and rear sliders, the rear side of the second lower splint is vertically installed with a third C-shaped connecting plate, and the second upper splint is in the shape of an arch and passes The hinge is installed upright on the top of the third connecting plate, the inner walls of the upper clamping plate 2 and the lower clamping plate 2 are respectively installed with clamping wheels 3 and clamping wheels 4, and the front side of the lower clamping plate 2 is vertically installed with C-type connecting plate 4, the front side of the upper clamping plate 2 is vertically rotated and installed with a threaded rod 2, the top of the threaded rod 2 is fixedly installed with a hand wheel 2, and the threaded rod 2 can be connected with the connecting plate 4. threaded connection at the top.

Preferably, the displacement and rotation assembly includes a motor 1 and a motor 2, a C-shaped fixing plate 1 is horizontally welded to the lower part of the outer wall of the lower splint 1 near the middle, and the motor 1 is arranged horizontally and symmetrically installed on the first fixing plate. On both sides, the output shaft of the motor 1 is installed with a pulley 1, the extension end of the rotating shaft of the clamping wheel 2 is installed with a pulley 2, and the pulley 1 and the pulley 2 are connected by a belt 1, Two adjacent pulleys are connected by a second belt, a second fixed plate is vertically welded on the lower part of the outer wall of the lower splint 1, and a U-shaped fixed plate 3 is installed on the left side of the second fixed plate. The second motor is installed on the third fixed plate horizontally to the left, the second motor is connected with a lead screw through a coupling, the right end of the lead screw is connected with a fourth fixed plate through a bearing, and the fourth fixed plate is installed by screws On the right side of the support frame, a fixing plate 5 is vertically welded on the lower part of the outer wall of the lower clamp plate 2, front and rear.

Preferably, T-shaped positioning plates are installed symmetrically on the left and right sides of the support plate installation groove, and positioning columns of equal length are evenly installed on the inner side of the upper part of the positioning plate, and the overhanging ends of the positioning columns are rounded. Corners are treated as hemispheres.

Preferably, a spring 1 is connected to the rear side between the upper clamp plate 1 and the lower clamp plate 1, and a bounce spring 2 is connected to the rear side between the upper clamp plate 2 and the lower clamp plate 2.

Preferably, an electrical cabinet is installed on the support frame, a controller is installed in the electrical cabinet, and the controller is electrically connected to the first motor and the second motor respectively, and a foot switch is arranged on the front side of the support frame , the foot switch is electrically connected with the controller.

A method of using the above-mentioned clamping device for manual welding of small tanks:

Step 1: Take the positioning column on the left as the benchmark, place the upper half of the tank between the clamping wheel 1 and clamping wheel 2 with the welding surface facing right, then press down the upper clamping plate and rotate the handwheel to turn the threaded rod. Go to the appropriate position in the connecting plate 2, and then use the positioning column on the right as the benchmark, place the lower half of the tank between the clamping wheel 3 and clamping wheel 4 with the welding surface facing left, then press down the upper clamping plate 2 and rotate the handwheel. 2. Screw the threaded rod 2 to the appropriate position in the 4th connecting plate;

Step 2: Under the control of the controller, the second motor rotates forward and drives the movable clamping assembly to move to the left until the welding surface of the upper half tank body is in close contact with the welding surface of the lower half tank body;

Step 3: Under the control of the controller, when the foot steps on the foot switch, the motor 1 rotates forward and drives the clamping wheel 2 to rotate by a certain angle after being driven by the belt, thereby driving the upper half of the tank to rotate by a certain angle, while the lower half The tank body and the upper half of the tank body are rotated synchronously by a certain angle due to contact friction, so as to complete the overturning requirements for the welding of the tank body;

Step 4: After the welding of the tank body is completed, reversely rotate the handwheel 1 to the threaded rod 1 to disengage the connecting plate 2, and the upper splint 1 is automatically opened under the action of the spring 1; reversely rotate the handwheel 2 to the thread The second rod is out of contact with the connecting plate 4, and the upper splint 2 is automatically opened under the action of the spring 2, and the welded tank body is taken away;

Step 5: Under the control of the controller, the second motor rotates in the opposite direction and drives the mobile clamping assembly to move to the right until it reaches the initial position.

Advantages of the present invention: The clamping device for manual welding of small tanks in the present invention: firstly clamp the upper half of the tank through the first clamping wheel and the second clamping wheel in the fixed clamping assembly, and then move the clamp The clamping wheel 3 and clamping wheel 4 in the tightening assembly clamp the lower half of the tank, and then work through the second motor, so that the welding surface of the upper half of the tank is in close contact with the welding surface of the lower half of the tank, and finally works through the first motor. , to make the upper half tank body and the lower half tank body rotate intermittently in a fixed direction to complete the overturning requirements when welding the tank body. The clamping device is used when manually welding small metal tanks. The welded tank avoids the serious defects of different welding seam widths and uneven welded tanks, and further improves the sealing quality and compressive strength of the welded tanks. ensure. The clamping device for manual welding of small tanks in the present invention has the characteristics of reasonable structure, convenient use, simple manufacture and maintenance, and good practicability.

Description of drawings

FIG. 1 is a schematic diagram of the overall three-dimensional structure of the present invention.

FIG. 2 is a schematic structural view of the present invention as a whole.

FIG. 3 is a schematic structural diagram of the overall side view of the present invention.

FIG. 4 is a schematic structural diagram of the overall transmission of the present invention.

FIG. 5 is a schematic structural diagram of a positioning plate and a positioning column.

in:

1-Support plate; 101-Installation slot; 2-Support frame; 3-Foma wheel; 4-Fixed clamping assembly; 401-Installation strip; ;405-Clamping wheel 1; 406-Clamping wheel 2; 407-Connecting plate 2; 408-Threaded rod 1; 409-Hand wheel 1; Rail; 502-slider; 503-upper splint two; 504-lower splint two; 505-connecting plate three; 506-clamping wheel three; 507-clamping wheel four; 508-connecting plate four; ;510-handwheel 2; 511-bounce spring 2;6-displacement rotating assembly;601-fixed plate 1;602-motor 1;603-belt 1;604-belt 2;605-belt 1;606- Belt two; 607-fixed plate two; 608-fixed plate three; 609-motor two; 610-coupling; 611-screw; 612-fixed plate four; 613-fixed plate five; -Locating plate; 8-Locating column; 9-Electrical cabinet; 10-Foot switch; 11-Upper half tank; 12-Lower tank.

Detailed ways

In order to make the technical means, creative features, achievement goals and effects realized by the present invention easy to understand, the present invention will be further described below with reference to the specific embodiments.

As shown in Figures 1 to 5, a clamping device for manual welding of small tanks includes a support plate 1, a support frame 2, and a Foma wheel 3. The support plate 1 is horizontally installed on the top of the support frame 2, The Foma wheel 3 is vertically installed on the bottom of the support frame 2, and a rectangular installation slot 101 is arranged in the middle of the support plate 1. The installation slot 101 is fixed with a fixed clamping assembly 4 on the left side and is used for clamping The upper half tank 11, the installation groove 101 slides to the right with a movable clamping assembly 5 and is used to clamp the lower half tank 12, the installation groove 101 is provided with a displacement rotation assembly 6 below and is used to drive the upper half tank The body 11 and the lower half tank body 12 rotate intermittently in the fixed direction at the same time, so as to complete the overturning requirements for the tank body during welding.

In the present invention, the fixing and clamping assembly 4 includes a mounting bar 401, an upper clamping plate 402 and a lower clamping plate 403. There are two mounting bars 401 and are installed on the front and rear sides of the left side of the installation slot 101. The lower splint one 403 is a circular arch and is installed upside down on the front and rear mounting bars 401. The rear side of the lower splint one 403 is vertically installed with a C-shaped connecting plate one 404, and the upper splint one 402 is a circular arch. It is installed on the top of the connecting plate one 404 through a hinge. The inner walls of the upper splint one 402 and the lower splint one 403 are respectively equipped with a clamping wheel one 405 and a clamping wheel two 406. The lower splint one The front side of 403 is vertically installed with a C-shaped connecting plate 2 407, the front side of the upper splint 1 402 is vertically rotated and installed with a threaded rod 1 408, and the top of the threaded rod 1 408 is fixedly installed with a hand wheel One 409, the first threaded rod 408 can be threadedly connected with the top of the second connecting plate 407.

In the present invention, the movable clamping assembly 5 includes a sliding rail 501, a second upper clamping plate 503 and a second lower clamping plate 504. The sliding rails 501 are provided with two and are installed on the front and rear sides of the right side of the installation groove 101. A sliding block 502 is slidably installed on the slide rail 501 , the second lower clamping plate 504 is a circular arch and is installed upside down on the front and rear sliding blocks 502 , and a C-shaped connecting plate is vertically installed on the rear side of the second lower clamping plate 504 Third 505, the second upper splint 503 is circular arch and is installed on the top of the third connecting plate 505 through hinges, and the inner walls of the second upper splint 503 and the second lower splint 504 are respectively installed with clamping wheels III 506 and the fourth clamping wheel 507, the front side of the second lower clamping plate 504 is vertically installed with a C-shaped connecting plate 4 508, and the front side of the second upper clamping plate 503 is installed with a second threaded rod 509 through the vertical rotation of the bearing, A second hand wheel 510 is fixedly installed on the top of the second threaded rod 509 , and the second threaded rod 509 can be threadedly connected to the top of the fourth connecting plate 508 .

In the present invention, the displacement and rotation assembly 6 includes a first motor 602 and a second motor 609. A C-shaped fixing plate 1 601 is horizontally welded to the lower part of the outer wall of the lower splint 1 403. The first motor 602 is arranged horizontally and It is symmetrically installed on both sides of the fixed plate 1 601, the output shaft of the motor 1 602 is installed with a pulley 1 603, and the extension end of the rotating shaft of the clamping wheel 2 406 is installed with a pulley 2 604. The first pulley 603 and the second pulley 604 are connected by a belt one 605, and the two adjacent pulleys 604 are connected by a second belt 606. The outer wall of the lower splint one 403 is vertically welded with a fixed plate in the front and rear. The second 607, a U-shaped fixing plate 608 is installed on the left side of the second fixing plate 607, the second motor 609 is installed on the third fixing plate 608 horizontally to the left, and the second motor 609 is connected with a coupling 610. A lead screw 611, the right end of the lead screw 611 is connected with a fixing plate 4 612 through a bearing, the fixing plate 4 612 is installed on the right side of the support frame 2 by screws, and the lower part of the lower splint 504 The outer wall of the second plate 504 is vertical in the front and rear The fifth fixing plate 613 is directly welded, and the lead screw 611 is threadedly mounted with a lead screw nut 614 and the lead screw nut 614 is mounted on the fifth fixing plate 613 .

In the present invention, the support plate 1 is symmetrically installed with T-shaped positioning plates 7 on the left and right sides of the installation groove 101 , and the inner side of the upper part of the positioning plate 7 is evenly installed with the positioning columns 8 of equal length. The overhanging end of the positioning post 8 is rounded into a hemisphere.

In the present invention, a spring one 410 is connected to the rear side between the upper plate 402 and the lower plate 403, and a spring spring is connected to the rear side between the upper plate 503 and the second lower plate 504. 2511.

In the present invention, an electrical cabinet 9 is installed on the support frame 2, and a controller is arranged in the electrical cabinet 9. The controller is electrically connected to the first motor 602 and the second motor 609, respectively. The support frame 2 There is a foot switch 10 on the front side of the controller, and the foot switch 10 is electrically connected with the controller.

A method of using the above-mentioned clamping device for manual welding of small tanks:

Step 1: Based on the positioning column 8 on the left, place the upper half of the tank 11 between the clamping wheel 1 405 and the clamping wheel 2 406 with the welding surface facing to the right, then press down the upper clamping plate 1 402 and rotate the hand wheel 1. 409 Rotate the threaded rod 1 408 to the appropriate position in the connecting plate 2 407, and then take the positioning column 8 on the right as the benchmark, place the lower half tank 12 between the clamping wheel 3 506 and the clamping wheel 4 507 with the welding surface facing Left, press down on the second splint 503 and rotate the second hand wheel 510 to screw the second threaded rod 509 to the appropriate position in the fourth connecting plate 508; (the so-called appropriate position can be understood as the clamping wheel can provide clamping force for the tank body, But it does not limit the rotational freedom of the tank.)

Step 2: Under the control of the controller, the second motor 609 rotates forward and drives the movable clamping assembly 5 to move to the left until the welding surface of the upper half tank 11 is in close contact with the welding surface of the lower half tank 12;

Step 3: Under the control of the controller, when the foot steps on the foot switch 10, the motor 1 602 rotates forward and drives the clamping wheel 2 406 to rotate by a certain angle after being driven by the belt, thereby driving the upper half tank 11 to rotate by a certain angle , and the lower half tank body 12 and the upper half tank body 11 are synchronously rotated by a certain angle due to contact friction, so as to complete the overturning requirements when the tank body is welded;

Step 4: After the welding of the tank body is completed, reversely rotate the handwheel one 409 until the threaded rod one 408 is out of contact with the connecting plate two 407, and the upper splint one 402 is automatically opened under the action of the spring one 410; Rotate the second hand wheel 510 until the second threaded rod 509 is out of contact with the fourth connecting plate 508, and the second upper splint 503 is automatically opened under the action of the second spring 511, and the welded tank body is taken away;

Step 5: Under the control of the controller, the second motor 609 rotates in the opposite direction and drives the movable clamping assembly 5 to move to the right until it reaches the initial position.

To sum up, the clamping device for manual welding of small tanks in the present invention: firstly clamp the upper half of the tank through the first clamping wheel and the second clamping wheel in the fixed clamping assembly, and then move the clamps. The clamping wheel 3 and clamping wheel 4 in the tightening assembly clamp the lower half of the tank, and then work through the second motor, so that the welding surface of the upper half of the tank is in close contact with the welding surface of the lower half of the tank, and finally works through the first motor. , to make the upper half tank body and the lower half tank body rotate intermittently in a fixed direction to complete the overturning requirements when welding the tank body. The clamping device is used when manually welding small metal tanks. The welded tank avoids the serious defects of different welding seam widths and uneven welded tanks, and further improves the sealing quality and compressive strength of the welded tanks. ensure. The clamping device for manual welding of small tanks in the present invention has the characteristics of reasonable structure, convenient use, simple manufacture and maintenance, and good practicability.

Accordingly, the above-disclosed embodiments are, in all respects, illustrative and not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are encompassed by the present invention.

Claims (8)

1. The utility model provides a clamping device that manual welding of small-size jar of body was used, includes backup pad (1), carriage (2), fortune horse wheel (3), backup pad (1) horizontal installation is at the top of carriage (2), the vertical bottom at carriage (2) of installing of fortune horse wheel (3), its characterized in that: the centre of backup pad (1) is equipped with mounting groove (101) of rectangle, mounting groove (101) lean on the left side fixed be equipped with fixed clamping component (4) and be used for pressing from both sides tight first jar of body (11), mounting groove (101) lean on the right side to slide and be equipped with and remove clamping component (5) and be used for pressing from both sides tight second jar of body (12), mounting groove (101) lean on the below to be equipped with displacement rotating assembly (6) and be used for driving first jar of body (11) and second jar of body (12) simultaneously do intermittent type towards fixed direction and rotate, accomplish the upset requirement when welding the jar body.

2. The clamping device for manually welding the small-sized tank body according to claim 1, wherein: the fixed clamping component (4) comprises a mounting bar (401), a first upper clamping plate (402) and a first lower clamping plate (403), the mounting bar (401) is provided with two mounting bars and is arranged on the left side of the mounting groove (101) at the front side and the rear side, the first lower clamping plate (403) is in a circular arch shape and is inversely arranged on the mounting bar (401) at the front side and the rear side, a first C-shaped connecting plate (404) is vertically arranged on the rear side of the first lower clamping plate (403), the first upper clamping plate (402) is in a circular arch shape and is vertically arranged at the top of the first connecting plate (404) through a hinge, a first clamping wheel (405) and a second clamping wheel (406) are respectively and uniformly arranged on the inner walls of the first upper clamping plate (402) and the first lower clamping plate (403), a second C-shaped connecting plate (407) is vertically arranged on the front side of the first lower clamping plate (403), a first threaded rod (408), the top of the first threaded rod (408) is fixedly provided with a first hand wheel (409), and the first threaded rod (408) can be in threaded connection with the top of the second connecting plate (407).

3. The clamping device for manually welding the small-sized tank body according to claim 2, wherein: the movable clamping assembly (5) comprises a sliding rail (501), a second upper clamping plate (503) and a second lower clamping plate (504), the sliding rail (501) is provided with two sliding plates and is arranged on the right side of the mounting groove (101), the sliding plate (501) is provided with a sliding block (502), the second lower clamping plate (504) is in a circular arch shape and is inversely arranged on the front and back sliding block (502), the rear side of the second lower clamping plate (504) is vertically provided with a third C-shaped connecting plate (505), the second upper clamping plate (503) is in a circular arch shape and is arranged at the top of the third connecting plate (505) through a hinge, the inner walls of the second upper clamping plate (503) and the second lower clamping plate (504) are respectively and uniformly provided with a third clamping wheel (506) and a fourth clamping wheel (507), the front side of the second lower clamping plate (504) is vertically provided with a fourth C-shaped connecting plate (508), and the front side of the second upper clamping plate (503) is provided with a, the top of the second threaded rod (509) is fixedly provided with a second hand wheel (510), and the second threaded rod (509) can be in threaded connection with the top of the fourth connecting plate (508).

4. The clamping device for manually welding the small-sized tank body according to claim 3, wherein: the displacement rotating assembly (6) comprises a first motor (602) and a second motor (609), a C-shaped first fixing plate (601) is horizontally welded below the outer wall of the first lower clamping plate (403) near the middle, the first motor (602) is horizontally arranged and symmetrically installed on two sides of the first fixing plate (601) left and right, a first belt wheel (603) is installed on an output shaft of the first motor (602), a second belt wheel (604) is installed at an extending end of a rotating shaft of the second clamping wheel (406), the first belt wheel (603) and the second belt wheel (604) are connected through a first belt (605), two adjacent second belt wheels (604) are connected through a second belt (606), a second fixing plate (607) is vertically welded below the outer wall of the first lower clamping plate (403) near the front and the back, a third U-shaped fixing plate (608) is installed on the left side of the second fixing plate (607), and the second motor (609) is horizontally installed on the third fixing plate (608) towards the, the second motor (609) is connected with a lead screw (611) through a coupler (610), the right end of the lead screw (611) is connected with a fourth fixing plate (612) through a bearing, the fourth fixing plate (612) is installed on the right of the supporting frame (2) through a screw, a fifth fixing plate (613) is vertically welded to the lower portion of the outer wall of the second lower clamping plate (504) close to the front and the rear, and a lead screw nut (614) is installed on the lead screw (611) in a threaded mode and is installed on the fifth fixing plate (613).

5. The clamping device for manually welding the small-sized tank body according to claim 4, wherein: locating plate (7) of T type are installed to backup pad (1) left and right sides symmetry in mounting groove (101), isometric reference column (8) are installed to the inboard equipartition on the upper portion of locating plate (7), the end rounding that overhangs of reference column (8) is handled into the hemispheroid.

6. The clamping device for manually welding the small-sized tank body according to claim 5, wherein: an ejection spring I (410) is connected between the upper clamp I (402) and the lower clamp I (403) close to the rear side, and an ejection spring II (511) is connected between the upper clamp II (503) and the lower clamp II (504) close to the rear side.

7. The clamping device for manually welding the small-sized tank body according to claim 6, wherein: the electric cabinet (9) is installed on the supporting frame (2), a controller is arranged in the electric cabinet (9), the controller is electrically connected with the first motor (602) and the second motor (609) respectively, a foot switch (10) is arranged on the front side of the supporting frame (2), and the foot switch (10) is electrically connected with the controller.

8. The use method of the clamping device for manually welding the small-sized tank body according to claim 7 is characterized in that:

the method comprises the following steps: taking the positioning column (8) on the left side as a reference, placing the upper half tank body (11) between the first clamping wheel (405) and the second clamping wheel (406) with the welding surface facing to the right, then pressing down the first upper clamping plate (402) and rotating the first hand wheel (409) to rotate the first threaded rod (408) to a proper position in the second connecting plate (407), then taking the positioning column (8) on the right side as a reference, placing the lower half tank body (12) between the third clamping wheel (506) and the fourth clamping wheel (507) with the welding surface facing to the left, then pressing down the second upper clamping plate (503) and rotating the second hand wheel (510) to rotate the second threaded rod (509) to a proper position in the fourth connecting plate (508);

step two: under the control of the controller, the second motor (609) rotates forwards and drives the movable clamping assembly (5) to move towards the left until the welding surface of the upper half tank body (11) is in close contact with the welding surface of the lower half tank body (12);

step three: under the control of the controller, when a foot pedal switch (10) is stepped on, a first motor (602) rotates in the positive direction and drives a second clamping wheel (406) to rotate for a certain angle after being transmitted by a belt, so that the upper half tank body (11) is driven to rotate for a certain angle, and the lower half tank body (12) and the upper half tank body (11) synchronously rotate for a certain angle due to contact friction to complete the turning requirement on the tank body during welding;

step four: after the welding of the tank body is finished, reversely rotating the hand wheel I (409) until the threaded rod I (408) is separated from the connecting plate II (407), and automatically opening the upper clamping plate I (402) under the action of the spring I (410); reversely rotating the hand wheel II (510) until the threaded rod II (509) is separated from the contact with the connecting plate IV (508), and automatically opening the upper clamping plate II (503) under the action of the spring II (511) to take away the welded tank body;

step five: under the control of the controller, the second motor (609) rotates reversely and drives the movable clamping assembly (5) to move towards the right until the initial position.

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