CN111922500B

CN111922500B - C-shaped welding clamp arm for welding automobile parts

Info

Publication number: CN111922500B
Application number: CN202010690527.7A
Authority: CN
Inventors: 凌永娥
Original assignee: Hestep New Energy Vehicle Components Beijing Co ltd
Current assignee: Hestep New Energy Vehicle Components Beijing Co ltd
Priority date: 2020-07-17
Filing date: 2020-07-17
Publication date: 2022-08-09
Anticipated expiration: 2040-07-17
Also published as: CN111922500A

Abstract

The invention relates to the field of automatic welding equipment, in particular to a C-shaped welding tong arm for welding automobile parts, which comprises a welding tong main body, wherein the welding tong main body comprises a handle switch, a welding tong arm, a cylinder component, a limiting handle, an electrode part, an electrode arm and a connecting support, and further comprises an auxiliary stroke switcher, wherein the auxiliary stroke switcher comprises: the U-shaped shifting plate is rotatably arranged at the front end of the handle switch through a limiting rotating piece at one side deviating from the center, and the front end of the handle switch is positioned in the opening of the welding tongs main body; the two ends of the elastic part are respectively and fixedly connected with the bottom of the opening of the U-shaped shifting plate and the bottom of the limiting rotating part; the adjustable rotating seats are arranged on two sides of the U-shaped shifting plate; the connecting rod, both ends rotate with adjustable rotating seat fixed part and spacing handle one side respectively and are connected, and install in the connecting rod middle section of handle switch both sides and stabilize the alignment jig and soldering turret arm tail end sliding connection through sliding, and this soldering turret switches the convenient safety of stroke, stable in structure, and the suitability is strong.

Description

C-shaped welding clamp arm for welding automobile parts

Technical Field

The invention relates to the field of automatic welding equipment, in particular to a C-shaped welding tong arm for welding automobile parts.

Background

The existing C-shaped soldering pliers can be generally divided into three using postures, one is a prone type in which the opening direction of the C-shaped pliers is upward horizontal, the other is a prone type in which the opening direction of the C-shaped pliers is downward, and the last is a vertical type in which the opening direction of the C-shaped pliers is horizontal. The stroke switching of the welding tongs is indispensable during welding, and sometimes the switching is frequent. The right hand of the operator holds the signal source handle, and the left hand holds the left handle to perform welding operation. When the welding is finished and the auxiliary travel switch needs to be opened, the left hand of an operator must leave the left handle, so that the welding tongs can be unstable, a stamping workpiece can be deformed seriously, the product quality is influenced, meanwhile, the hidden danger that the arm is damaged by clamping exists in the operation, and the auxiliary travel switch can be opened even by an unskilled operator through multiple operations, so that the working efficiency of the welding tongs is low, and the labor intensity is high.

Chinese patent CN201210476883.4 discloses a stroke switching mechanism of C type soldering turret, including switch handle, electrode arm, cylinder, stroke, its characterized in that: the stroke is provided with a Z-shaped transmission connecting rod, and the upper end of the transmission connecting rod is provided with a stroke handle.

When the structure is switched, the fingers are separated from the operating handle temporarily, so that the welding tongs main body is unstable, a stamped workpiece is deformed, and the welding quality of the stamped workpiece is influenced.

Disclosure of Invention

In order to solve the technical problem, the C-shaped welding tongs arm for welding the automobile parts is provided, and the problem that the switching stroke of the welding tongs is complex and dangerous is solved by the technical scheme.

In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:

the utility model provides a type welding tong arm for automobile parts welding, including the soldering turret main part, the soldering turret main part is including handle switch, welding tong arm, cylinder assembly, spacing handle, electrode spare part, electrode arm and linking bridge, still including supplementary stroke switch, supplementary stroke switch including: the U-shaped shifting plate is rotatably arranged at the front end of the handle switch through a limiting rotating piece at one side of the U-shaped shifting plate, which deviates from the center, and the front end of the handle switch is positioned in the opening of the welding tongs main body; the two ends of the elastic part are respectively and fixedly connected with the U-shaped shifting plate and the limiting rotating part, and the opposite other ends of the two sides of the U-shaped shifting plate are tilted on the limiting rotating part in a working state; the adjustable rotating seats are arranged on two sides of the U-shaped shifting plate; the two ends of the connecting rod are respectively and rotatably connected with the fixed part of the adjustable rotating seat and one side of the limiting handle, and the middle section of the connecting rod arranged at the two sides of the handle switch is in sliding connection with the tail end of the welding clamp arm through a sliding stable adjusting frame; the limiting handle is connected to the tail end of the output shaft of the air cylinder component in a clamping mode.

Preferably, the U-shaped pulling plate comprises: the first fixing arm and the second fixing arm are connected in parallel at the same end through a connecting plate; the fixed shaft is arranged between the fixed arms in the same direction close to the connecting plate, the fixed shaft is rotatably connected with the rotating part of the limiting rotating part, the combined opening of the fixed arms and the connecting plate is positioned at the front end of the handle switch, and the center of the bottom end of the connecting plate is elastically connected with the bottom end of the limiting rotating part through an elastic part; and the first limiting nut is coaxially screwed at two ends of the fixed shaft and is in clearance fit with the rotating part of the limiting rotating part.

Preferably, the spacing rotating member comprises: the clamp type rotating seat is horizontally arranged at the front end of the handle switch, the fixed shaft is rotatably connected with the clamp type rotating seat, and the bottom end of the clamp type rotating seat is elastically connected with one end of the U-shaped shifting plate through a connecting plate; and one end of the vertical thread limiting hook vertically penetrates through the clamp type rotating seat, and the other end of the vertical thread limiting hook is abutted to the bottom end of the connecting plate.

Preferably, the elastic element is a tension spring or other parts with elastic tension property.

Preferably, the adjustable rotary seat comprises: the fixing plate is arranged on the outer sides of the first fixing arm and the second fixing arm, a waist-shaped groove is formed in the fixing plate, and a convex strip for increasing friction force is arranged at the outer end in the waist-shaped groove; the connecting rod comprises an internal thread sleeve and an external thread sleeve, wherein the thread sleeve is coaxially screwed and slidably arranged on the waist-shaped groove, the thread sleeve is coaxially provided with a butt joint ring which is butted on the raised line, and two ends of the connecting rod are respectively and rotatably connected with the outer sides of the thread sleeve and the limiting handle.

Preferably, both ends of the connecting rod are vertically provided with a first rotating shaft and a second rotating shaft which are respectively connected with the adjustable rotating seat and the limiting handle in a rotating manner, and the first rotating shaft is vertically provided with a fixing pin which vertically penetrates through and is in clearance fit with the rotating part of the adjustable rotating seat; and second limiting nuts in clearance fit with the inner side and the outer side of the limiting handle are coaxially arranged at two ends of the second rotating shaft.

Preferably, the sliding stability adjusting bracket comprises: the top end of the fixed rod is vertically provided with a fixed clamping lug which is clamped with the tail end of the welding clamp arm and is fixed with the tail end of the welding clamp arm; the sliding rods are vertically arranged on two sides of the bottom end of the fixed rod, and sliding grooves for sliding are formed in the sliding rods; the two ends of the connecting rod are in sliding fit with the connecting rods on the two sides through sliding sleeves, the middle section of the connecting rod is in sliding fit with the sliding groove, and the sliding sleeve is further provided with a pressing nut which penetrates through the sliding sleeve and is pressed against the outer side of the connecting rod; and the U-shaped lapping frame is lapped at the tail end of the welding tong arm, and the bottoms of the two sides of the U-shaped lapping frame are fixedly connected with the bottom end of the sliding rod.

Preferably, the U-shaped shifting plate further comprises a shifting piece, and the shifting piece is obliquely arranged at the tilting ends of the first fixing arm and the second fixing arm.

Preferably, the clip type rotary base comprises: the other side of the notch facing outwards horizontally is fixedly arranged at the front end of the handle switch through a side mounting plate, and the fixed shaft is coaxially and rotatably arranged on the clamp frame; the output of the blade plate is arranged at the upper end and the lower end of the notch of the hoop frame, the adjusting screw vertically penetrates through the blade plate and the fixed connection of the blade plate, and one end of the vertical thread limiting hook vertically penetrates through the blade plate and the other end of the vertical thread limiting hook is abutted to the bottom end of the connecting plate.

Preferably, the bottom end of the center of the connecting plate is provided with a first hook, the bottom end of the outer side of the side mounting plate is provided with a second hook, and two ends of the elastic part are fixedly connected with the first hook and the second hook respectively.

Compared with the prior art, the invention has the beneficial effects that:

1. the adjustable welding tongs are matched with different models of types of welding tongs through the adjustable rotating seat and the sliding stable adjusting frame, and particularly, the auxiliary stroke switcher is installed according to the model of the welding tongs main body, and the positions of the internal thread sleeve and the external thread sleeve on the waist-shaped groove and the position of the U-shaped lapping frame at the tail end of the welding tongs arm are adjusted, so that the bottom end of the connecting rod can be rotatably connected with the outer side of the limiting handle;

2. the welding tongs can be switched in a stable state through the U-shaped shifting plate and the connecting rod, specifically, the connecting support is fixedly connected with the fixed end of the power-assisted mechanical arm, a worker holds the handle switch to enable a workpiece to be welded to penetrate between the welding tongs arm and the electrode arm, and the output shaft of the air cylinder assembly can be started to extend out through the handle switch, so that the electrode parts are abutted against the two ends of the welding point, and the electrode parts can be electrified through the handle switch, so that the welding point is connected in a melting way; when the small stroke of the cylinder assembly needs to be switched into the large stroke so as to be convenient for welding larger workpieces, a worker tightly holds a handle switch by four fingers and presses the poking piece by a thumb, so that the connecting plate is lifted on the clamp type rotating seat by overcoming the elastic action of the elastic piece, and two ends of the connecting rod are respectively and rotatably connected with the internal thread sleeve and one side of the limiting handle, so that the limiting handle is separated from the tail end of an output shaft of the cylinder assembly through the connecting rod transmission principle, the output shaft of the cylinder assembly can be stretched in the large stroke; the auxiliary stroke switcher can be arranged on welding tongs of different models through the adjustable rotating seat and the sliding stable adjusting frame, and in the switching process, a worker can always hold the handle switch to fix the welding tong main body, so that unstable welding caused by movement of the welding tong main body is prevented;

3. the invention has simple operation and strong practicability, particularly, considering the habit of the user's hands, no matter the user holds the handle switch by the left hand or the right hand, the thumb of the operator can always switch the stroke by pressing the plectrum on one side, and the thumb of the operator is convenient for the other hand to hold a workpiece or perform other operations.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a perspective view of the present invention;

FIG. 3 is a perspective view of the present invention;

FIGS. 4 and 5 are perspective views of the U-shaped toggle plate and the spacing rotary member of the present invention at two different viewing angles, respectively;

FIG. 6 is an enlarged view of a portion of FIG. 5 at A;

FIG. 7 is a perspective view of the connecting rod and sliding stability adjustment bracket of the present invention;

FIG. 8 is an enlarged view of a portion of FIG. 7 at B;

FIG. 9 is an enlarged view of a portion of FIG. 7 at C;

fig. 10 is a partial enlarged view of fig. 7 at D.

Description of reference numerals:

1-a soldering turret main body; 1 a-a handle switch; 1 b-welding the tong arm; 1 c-a cylinder assembly; 1 d-a limit handle; 1 e-electrode parts; 1 f-electrode arm; 1 g-linking scaffold;

2-U-shaped shifting plates; 2 a-a first fixed arm; 2 b-a second fixed arm; 2 c-connecting plate; 2c1 — first hook; 2 d-a fixed shaft; 2 e-a first stop nut; 2 f-a plectrum;

3-limiting the rotating part; 3 a-a clamp type rotating seat; 3a 1-clip frame; 3a 2-side mounting plate; 3a 3-leaf plate; 3a 4-adjusting screw; 3a5 — second hook; 3 b-vertical thread limit hook;

4-an elastic member;

5-an adjustable rotating seat; 5 a-a fixing plate; 5a 1-waist groove; 5a 2-Ribs; 5 b-an internally threaded sleeve; 5 c-an externally threaded sleeve; 5 d-a butt ring;

6-connecting rod; 6 a-a first rotating shaft; 6 b-a fixed pin; 6 c-a second rotating shaft; 6 d-a second limit nut;

7-a sliding stable adjusting frame; 7 a-a fixation rod; 7a 1-fixed grip ears; 7 b-a sliding bar; 7b 1-sliding groove; 7 c-a connecting rod; 7 d-a sliding sleeve; 7 e-tightening the nut; 7f-U type bridging.

Detailed Description

The following description is provided to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.

Referring to fig. 2, a C-shaped welding tongs arm for welding automobile parts includes a welding tongs main body 1, the welding tongs main body 1 includes a handle switch 1a, a welding tongs arm 1b, a cylinder assembly 1C, a limit handle 1d, an electrode part 1e, an electrode arm 1f, a connecting support 1g, and further includes an auxiliary stroke switcher, and the auxiliary stroke switcher includes:

the U-shaped shifting plate 2 is rotatably arranged at the front end of a handle switch 1a through a limiting rotating piece 3 at one side of the U-shaped shifting plate 2 deviating from the center, and the front end of the handle switch 1a is positioned in an opening of the welding tongs main body 1;

the two ends of the elastic part 4 are respectively fixedly connected with the U-shaped shifting plate 2 and the limiting rotating part 3, and the opposite other ends of the two sides of the U-shaped shifting plate 2 are tilted on the limiting rotating part 3 in a working state;

the adjustable rotating seats 5 are arranged on two sides of the U-shaped shifting plate 2;

two ends of the connecting rod 6 are respectively connected with the fixed part of the adjustable rotating seat 5 and one side of the limiting handle 1d in a rotating way, and the middle section of the connecting rod 6 arranged at two sides of the handle switch 1a is connected with the tail end of the welding clamp arm 1b in a sliding way through the sliding stable adjusting frame 7.

When the welding clamp works, the connecting support 1g is fixedly connected with the fixed end of the power-assisted mechanical arm, a worker holds the handle switch 1a to enable a workpiece to be welded to penetrate between the welding clamp arm 1b and the electrode arm 1f, the output shaft of the cylinder assembly 1c can be started to extend out through the handle switch 1a, so that the electrode part 1e is abutted to two ends of a welding point, the electrode part 1e can be electrified through the handle switch 1a, so that the welding point is connected in a melting manner, when the small stroke of the cylinder assembly 1c is required to be switched to the large stroke, so as to weld a larger workpiece, the worker presses one end of the welding clamp main body 1 which is tilted by a thumb while holding the handle switch 1a by four fingers, so that the other end of the U-shaped shifting plate 2 overcomes the elastic action of the elastic piece 4 to be lifted on the limiting rotating piece 3, and two ends of the connecting rod 6 are respectively rotatably connected with one sides of the fixed part of the adjustable rotating seat 5 and the limiting handle 1d, therefore, the limiting handle 1d is separated from the tail end of the output shaft of the clamping cylinder assembly 1c through a connecting rod transmission principle, so that the output shaft of the cylinder assembly 1c can stretch out and draw back in a large stroke, and when a worker stops pressing the U-shaped shifting plate 2 by a thumb, the other end of the U-shaped shifting plate 2 is restored to an original state under the action of elastic tension of the elastic piece 4, so that the limiting handle 1d clamps the output shaft of the cylinder assembly 1c again, and the output shaft is restored to a small stroke state; the auxiliary stroke switcher can be arranged on welding tongs with different models through the adjustable rotating seat 5 and the sliding stable adjusting frame 7, and in the switching process, a worker can always hold the handle switch 1a to fix the welding tong main body 1, so that unstable welding caused by movement of the welding tong main body 1 is prevented; considering the habit of the user's hands, no matter the handle switch 1a is held by the left hand or the right hand, the thumb of the operator can always switch the stroke by pressing the tilted end of the U-shaped dial plate 2 on one side, and the other hand is convenient for holding the workpiece or performing other operations.

As shown in fig. 4 and 5, the U-shaped dial plate 2 includes:

the first fixing arm 2a and the second fixing arm 2b are fixedly connected at the same end side by side through a connecting plate 2 c;

the fixed shaft 2d is arranged between the fixed arms in the same direction close to the connecting plate 2c, the fixed shaft 2d is rotatably connected with the rotating part of the limiting rotating piece 3, the combined opening of the fixed arms and the connecting plate is positioned at the front end of the handle switch 1a, and the center position of the bottom end of the connecting plate 2c is elastically connected with the bottom end of the limiting rotating piece 3 through an elastic piece 4;

and the first limiting nut 2e is coaxially screwed at two ends of the fixed shaft 2d, and the first limiting nut 2e is in clearance fit with the rotating part of the limiting rotating part 3.

When the cylinder component 1c needs to be switched to a large stroke, a worker tightly holds the handle switch 1a with four fingers, presses the tilting end of the first fixing arm 2a or the second fixing arm 2b by a thumb to enable the fixing arms to rotate on the limiting rotating part 3 through the fixing shaft 2d, the bottom end of the connecting plate 2c is connected with the bottom end of the limiting rotating part 3 through the elastic part 4, so that the fixing arms overcome the elastic action of the elastic part 4 to enable the other ends of the fixing arms to ascend, thereby enabling the limiting handle 1d to be separated from the tail end of the output shaft of the cylinder component 1c through the transmission action of the connecting rod, further enabling the cylinder component 1c to move for a longer distance, when the thumb stops pressing the fixing arms, the connecting plate 2c enables the pressing end of the first fixing arm 2a to tilt again under the tensile force of the elastic part 4, thereby enabling the limiting handle 1d to be clamped at the tail end of the output shaft of the cylinder component 1c again, thereby enabling the cylinder assembly 1c to move only in a small range, thereby making the switching convenient; first stop nut 2e sets up on fixed axle 2d and rotates 3 clearance fit with spacing for fixed axle 2d is unlikely to follow endwise slip on spacing rotation piece 3, thereby makes the switching structure more stable.

As shown in fig. 4 and 5, the rotation-limiting member 3 includes:

the clamp type rotating seat 3a is horizontally arranged at the front end of the handle switch 1a, the fixed shaft 2d is rotatably connected with the clamp type rotating seat 3a, and the bottom end of the clamp type rotating seat 3a is elastically connected with one end of the U-shaped shifting plate 2 through a connecting plate 2 c;

and one end of the vertical thread limiting hook 3b vertically penetrates through the clamp type rotating seat 3a, and the other end of the vertical thread limiting hook is abutted to the bottom end of the connecting plate 2 c.

Fixed axle 2d rotates and sets up on seat 3a is rotated to the clamp formula for when pressing the U type and dialling 2 one ends of board, the board 2 other end perk is dialled to the U type to take place connecting rod transmission effect and make spacing handle 1d break away from joint cylinder assembly 1c output shaft tail end, and perpendicular screw thread limit hook 3b can make when stopping pressing the U type and dialling board 2, thereby connecting plate 2c one end is unlikely to by elastic component 4 one to taut unable U type of pressing and dials board 2.

As shown in fig. 5, the elastic member 4 is a tension spring or other parts having elastic tensile properties.

The elastic element 4 is a tension spring or other parts with elastic tension property, so that the elastic element can have the effect of elastic reset, and the stroke of the cylinder assembly 1c can be switched continuously.

As shown in fig. 6, the adjustable rotary seat 5 includes:

the fixing plate 5a is arranged outside the first fixing arm 2a and the second fixing arm 2b, a waist-shaped groove 5a1 is formed in the fixing plate 5a, and convex strips 5a2 for increasing friction force are arranged at the inner end and the outer end of the waist-shaped groove 5a 1;

the connecting rod comprises an internal thread sleeve 5b and an external thread sleeve 5c, wherein the threaded sleeves are coaxially screwed and slidably arranged on the waist-shaped groove 5a1, abutting rings 5d which are abutted on the raised strips 5a2 are coaxially arranged on the threaded sleeves, and two ends of the connecting rod 6 are respectively and rotatably connected with the outer sides of the threaded sleeves and the limiting handle 1 d.

When installing the soldering turret on different models with supplementary stroke switch, rotate internal thread sleeve 5b and external screw thread sleeve 5c, make the butt circle 5d stop butt sand grip 5a2, thereby make the combination of internal thread sleeve 5b and external screw thread sleeve 5c to slide on waist type groove 5a1, thereby be convenient for change the connecting rod 6 of different length and adjust spacing handle 1d and break away from cylinder assembly 1c output shaft tail end distance, thereby make supplementary stroke switch be suitable for to wider, can indirectly adjust the motion of fixed plate 5a through first fixed arm 2a and second fixed arm 2b, thereby be convenient for adjust connecting rod 6 displacement.

As shown in fig. 8 and 9, a first rotating shaft 6a and a second rotating shaft 6c which are respectively rotatably connected with the adjustable rotating seat 5 and the limiting handle 1d are vertically arranged at both ends of the connecting rod 6, and a fixing pin 6b which vertically penetrates through and is in clearance fit with the rotating part of the adjustable rotating seat 5 is vertically arranged on the first rotating shaft 6 a; and second limiting nuts 6d in clearance fit with the inner side and the outer side of the limiting handle 1d are coaxially arranged at two ends of the second rotating shaft 6 c.

A first rotating shaft 6a and a second rotating shaft 6c are respectively arranged at two ends of the connecting rod 6, the first rotating shaft 6a and the second rotating shaft 6c are respectively in rotating fit with the adjustable rotating seat 5 and the limiting handle 1d, and a fixing pin 6b which vertically penetrates through and is in clearance fit with a rotating part of the adjustable rotating seat 5 is vertically arranged on the first rotating shaft 6 a; and second limiting nuts 6d which are in clearance fit with the inner side and the outer side of the limiting handle 1d are coaxially arranged at the two ends of the second rotating shaft 6c, so that connecting rods 6 with different lengths are convenient to disassemble and replace, the connecting rods 6 can control the limiting handle 1d to be separated from the tail end of an output shaft of the air cylinder assembly 1c, and the stroke can be conveniently regulated and controlled.

As shown in fig. 7 and 10, the slide stabilization adjusting bracket 7 includes:

the top end of the fixing rod 7a is vertically provided with a fixing clamping lug 7a1 which is clamped with the tail end of the soldering turret arm 1b and is fixed with the soldering turret arm;

the sliding rods 7b are vertically arranged at two sides of the bottom end of the fixed rod 7a, and sliding grooves 7b1 for sliding are arranged on the sliding rods 7 b;

two ends of the connecting rod 7c are in sliding fit with the connecting rods 6 on two sides through sliding sleeves 7d, the middle section of the connecting rod 7c is in sliding fit with the sliding groove 7b1, and the sliding sleeve 7d is further provided with a pressing nut 7e penetrating through the sliding sleeve 7d and abutting against the outer side of the connecting rod 6;

and the U-shaped lapping frame 7f is lapped on the welding clamp arm 1b, and the bottoms of two sides of the U-shaped lapping frame 7f are fixedly connected with the bottom end of the sliding rod 7 b.

The distance between the fixed clamping lug 7a1 and the tail end of the welding clamp arm 1b is adjusted, so that the fixed rod 7a moves relative to the axis of the welding clamp arm 1b, and the assembly requirements of different welding clamps are met; the connecting rod 7c is arranged in the sliding groove 7b1 in a sliding mode, two ends of the connecting rod 7c are in sliding fit with the connecting rods 6 on two sides through the sliding sleeve 7d, the abutting nut 7e penetrates through the sliding sleeve 7d and abuts against the outer side of the connecting rod 6, so that the connecting rod 7c and the connecting rods 6 on two sides are perpendicular to each other in an I shape, when the connecting rods 6 on two sides move, the connecting rod 7c enables the movement to be more stable, and the sliding rod 7b can guide the connecting rod 7c at different positions or different angles by adjusting the position of the abutting nut 7e on the outer side of the connecting rod 6, and when the connecting rod 6 on one side moves, the limiting handle 1d can be synchronously adjusted by the connecting rod 6 on the other side to be separated from an output shaft of the cylinder assembly 1 c.

As shown in fig. 4, the U-shaped shifting board 2 further includes a shifting piece 2f, and the shifting piece 2f is obliquely disposed at the tilted ends of the first fixing arm 2a and the second fixing arm 2 b.

Plectrum 2f slope sets up at first fixed arm 2a and second fixed arm 2b perk end to make the staff can press plectrum 2f through the thumb promptly, thereby be convenient for switch the stroke.

As shown in fig. 4 and 5, the bail-type rotating base 3a includes:

the clamp frame 3a1 is fixedly arranged at the front end of the handle switch 1a through a side mounting plate 3a2 at the other side of the horizontally outward notch, and the fixed shaft 2d is coaxially and rotatably arranged on the clamp frame 3a 1;

the output of the blade 3a3 is arranged at the upper end and the lower end of the notch of the hoop frame 3a1, the adjusting screw 3a4 vertically penetrates through the blade 3a3 and is fixedly connected with the blade, and one end of the vertical thread limiting hook 3b vertically penetrates through the blade 3a3 and the other end of the vertical thread limiting hook is abutted to the bottom end of the connecting plate 2 c.

The fixed shaft 2d penetrates through the notch of the clamp frame 3a1 so as to be rotatably arranged in the clamp frame 3a1, the distance between the two side blades 3a3 can be adjusted by rotating the adjusting screw 3a4, so that the clamping degree of the clamp frame 3a1 on the fixed shaft 2d is conveniently adjusted, the clamping degree is adjusted according to the use habit of workers, and the side mounting plate 3a2 is used for fixedly mounting the clamp frame 3a 1; and the vertical screw limit hook 3b is used to limit the moving angle of the connection plate 2 c.

As shown in fig. 5, a first hook 2c1 is disposed at the bottom end of the center of the connecting plate 2c, a second hook 3a5 is disposed at the bottom end of the outer side of the side mounting plate 3a2, and two ends of the elastic member 4 are fixedly connected to the first hook 2c1 and the second hook 3a5, respectively.

Elastic component 4 both ends respectively with first couple 2c1 and second couple 3a5 fixed connection to elastic component 4 is very changed to convenient to detach, makes elastic force can exist all the time between U type group board 2 and the spacing rotation piece 3.

The working principle of the invention is as follows:

the device realizes the functions of the invention through the following steps, thereby solving the technical problems provided by the invention:

the method comprises the following steps: an auxiliary stroke switcher is installed according to the model of the electrode holder main body 1, the positions of the internal thread sleeve 5b and the external thread sleeve 5c on the waist-shaped groove 5a1 and the position of the U-shaped bridging 7f at the tail end of the electrode holder arm 1b are adjusted, so that the bottom end of the connecting rod 6 can be rotatably connected with the outer side of the limiting handle 1 d;

step two: fixedly connecting the connecting support 1g with the fixed end of the power-assisted mechanical arm, enabling a workpiece to be welded to pass through the space between the welding clamp arm 1b and the electrode arm 1f by a worker holding the handle switch 1a, starting the output shaft of the cylinder assembly 1c to extend out through the handle switch 1a, enabling the electrode part 1e to be abutted against two ends of a welding point, and similarly enabling the electrode part 1e to be electrified through the handle switch 1a, so that the welding point is connected in a melting way;

step three: when the small stroke of the cylinder assembly 1c is required to be switched into the large stroke so as to weld a larger workpiece, a worker tightly holds the handle switch 1a with four fingers and presses the shifting sheet 2f with a thumb, so that the connecting plate 2c overcomes the elastic action of the elastic piece 4 and rises on the clamp type rotating seat 3a, and the two ends of the connecting rod 6 are respectively and rotatably connected with the internal thread sleeve 5b and one side of the limit handle 1d, so that the limit handle 1d is separated from the tail end of the output shaft of the cylinder assembly 1c through the connecting rod transmission principle, and the output shaft of the cylinder assembly 1c can stretch out and retract in the large stroke;

step four: when the thumb of the worker stops pressing the second fixing arm 2b, the connecting plate 2c is restored to the original state under the action of the elastic tension of the elastic piece 4, so that the limiting handle 1d blocks the output shaft of the cylinder assembly 1c again, and the output shaft is restored to the small-stroke state; the auxiliary stroke switcher can be arranged on welding tongs with different models through the adjustable rotating seat 5 and the sliding stable adjusting frame 7, and in the switching process, a worker can always hold the handle switch 1a to fix the welding tong main body 1, so that unstable welding caused by movement of the welding tong main body 1 is prevented; in consideration of the habit of the user's hands, the thumb of the operator can always switch the stroke by pressing the one-side paddle 2f regardless of whether the handle switch 1a is held by the left hand or the right hand, and it is convenient for the other hand to hold a workpiece or perform other operations.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a C type welding tongs arm for automobile parts welding, including welding tongs main part (1), welding tongs main part (1) is including handle switch (1a), welding tongs arm (1b), cylinder component (1C), spacing handle (1d), electrode spare part (1e), electrode arm (1f) and linking bridge (1g), its characterized in that, still including supplementary stroke switch, supplementary stroke switch is including: the U-shaped shifting plate (2), one side of the U-shaped shifting plate (2) deviating from the center is rotatably arranged at the front end of a handle switch (1a) through a limiting rotating piece (3), and the front end of the handle switch (1a) is positioned in an opening of the welding clamp main body (1);

the two ends of the elastic part (4) are respectively and fixedly connected with the U-shaped shifting plate (2) and the limiting rotating part (3), and the opposite other ends of the two sides of the U-shaped shifting plate (2) tilt up on the limiting rotating part (3) in a working state;

the adjustable rotating seats (5) are arranged on two sides of the U-shaped shifting plate (2);

two ends of the connecting rod (6) are respectively connected with the fixed part of the adjustable rotating seat (5) and one side of the limiting handle (1d) in a rotating way, and the middle section of the connecting rod (6) arranged at two sides of the handle switch (1a) is connected with the tail end of the welding clamp arm (1b) in a sliding way through a sliding stable adjusting frame (7);

the limiting handle (1d) is clamped at the tail end of the output shaft of the air cylinder component (1 c);

u type is dialled board (2) including:

the first fixing arm (2a) and the second fixing arm (2b) are fixedly connected at the same end side by side through a connecting plate (2 c);

the fixed shaft (2d) is arranged between the fixed arms in the same direction close to the connecting plate (2c), the fixed shaft (2d) is rotatably connected with the rotating part of the limiting rotating piece (3), the combined opening of the fixed arm and the connecting plate is positioned at the front end of the handle switch (1a), and the center position of the bottom end of the connecting plate (2c) is elastically connected with the bottom end of the limiting rotating piece (3) through an elastic piece (4);

and the first limiting nut (2e) is coaxially screwed at two ends of the fixed shaft (2d), and the first limiting nut (2e) is in clearance fit with the rotating part of the limiting rotating part (3).

2. The C-arm according to claim 1, characterized in that the rotation-limiting element (3) comprises:

the clamp type rotating seat (3a) is horizontally arranged at the front end of the handle switch (1a), the fixed shaft (2d) is rotatably connected with the clamp type rotating seat (3a), and the bottom end of the clamp type rotating seat (3a) is elastically connected with one end of the U-shaped shifting plate (2) through a connecting plate (2 c);

and one end of the vertical thread limiting hook (3b) vertically penetrates through the clamp type rotating seat (3a), and the other end of the vertical thread limiting hook is abutted to the bottom end of the connecting plate (2 c).

3. The C-shaped welding tong arm for welding of automobile parts and components as claimed in claim 1, characterized in that the elastic member (4) is a tension spring or other parts with elastic tension properties.

4. The C-arm according to claim 1, characterized in that the adjustable rotary seat (5) comprises:

the fixing plate (5a) is arranged on the outer sides of the first fixing arm (2a) and the second fixing arm (2b), a waist-shaped groove (5a1) is formed in the fixing plate (5a), and convex strips (5a2) for increasing friction force are arranged at the inner end and the outer end of the waist-shaped groove (5a 1);

internal thread sleeve (5b) and external screw thread sleeve (5c), the coaxial screw-on of screw thread sleeve connects the slip setting on waist type groove (5a1), all coaxial butt ring (5d) of butt on sand grip (5a2) that are provided with on the screw thread sleeve, connecting rod (6) both ends respectively with screw thread sleeve and spacing handle (1d) outside are rotated and are connected.

5. The C-shaped welding tong arm for welding the automobile parts as claimed in claim 1, characterized in that both ends of the connecting rod (6) are vertically provided with a first rotating shaft (6a) and a second rotating shaft (6C) which are respectively and rotatably connected with the adjustable rotating seat (5) and the limiting handle (1d), the first rotating shaft (6a) is vertically provided with a fixing pin (6b) which vertically penetrates through and is in clearance fit with the rotating part of the adjustable rotating seat (5); and second limiting nuts (6d) in clearance fit with the inner side and the outer side of the limiting handle (1d) are coaxially arranged at two ends of the second rotating shaft (6 c).

6. C-shaped welding jaw arm for the welding of automobile parts according to claim 1, characterized in that the sliding stable adjustment carriage (7) comprises:

the top end of the fixing rod (7a) is vertically provided with a fixing clamping lug (7a1) which is clamped with the tail end of the welding clamp arm (1b) and is fixed with the welding clamp arm;

the sliding rods (7b) are vertically arranged at two sides of the bottom end of the fixed rod (7a), and sliding grooves (7b1) for sliding are formed in the sliding rods (7 b);

the two ends of the connecting rod (7c) are in sliding fit with the connecting rods (6) on the two sides through sliding sleeves (7d), the middle section of the connecting rod (7c) is in sliding fit with the sliding groove (7b1), and a pressing nut (7e) penetrating through the sliding sleeve (7d) and abutting against the outer side of the connecting rod (6) is further arranged on the sliding sleeve (7 d);

the U-shaped lapping frame (7f) is lapped on the welding clamp arm (1b), and the bottoms of two sides of the U-shaped lapping frame (7f) are fixedly connected with the bottom end of the sliding rod (7 b).

7. The C-shaped welding clamp arm for welding the automobile parts as claimed in claim 1, wherein the U-shaped shifting plate (2) further comprises a shifting piece (2f), and the shifting piece (2f) is obliquely arranged at the tilting ends of the first fixing arm (2a) and the second fixing arm (2 b).

8. The C-arm according to claim 2, characterized in that the rotating holder (3a) comprises:

the clamp frame (3a1), the other side of the notch facing outwards horizontally is fixedly arranged at the front end of the handle switch (1a) through a side mounting plate (3a2), and the fixed shaft (2d) is coaxially and rotatably arranged on the clamp frame (3a 1);

the output of the leaf plate (3a3) is arranged at the upper end and the lower end of the notch of the clamp frame (3a1), the adjusting screw (3a4) vertically penetrates through the leaf plate (3a3) and is fixedly connected with the leaf plate, one end of the vertical thread limiting hook (3b) vertically penetrates through the leaf plate (3a3), and the other end of the vertical thread limiting hook is abutted to the bottom end of the connecting plate (2 c).

9. The C-shaped welding jaw arm for automobile part welding as claimed in claim 2, characterized in that the connecting plate (2C) is provided with a first hook (2C1) at the bottom of the center, a second hook (3a5) is provided at the bottom of the outer side of the side mounting plate (3a2), and two ends of the elastic member (4) are fixedly connected with the first hook (2C1) and the second hook (3a5), respectively.