WO2014079156A1

WO2014079156A1 - Welding tongs

Info

Publication number: WO2014079156A1
Application number: PCT/CN2013/070142
Authority: WO
Inventors: 唐科; 潘海涛; 周江奇; 尧永春; 储国平; 马若澜; 威尔斯⋅詹姆斯; 王培中
Original assignee: 上汽通用五菱汽车股份有限公司
Priority date: 2012-11-23
Filing date: 2013-01-07
Publication date: 2014-05-30
Also published as: CN102941407B; KR20150101445A; JP2016501726A; JP6085686B2; CN102941407A; KR101698407B1

Abstract

Disclosed are welding tongs (100) comprising a power element (102), a drive mechanism (20) connected to the power element, an electrode mounting seat (24) actuated by the drive of the drive mechanism, an electrode (30) mounted on the electrode mounting seat and driven by the electrode mounting seat to close or achieve an open state, a clamp mounting seat (26) arranged to correspond to the electrode mounting seat and connected to the drive mechanism and actuated by the drive thereof, and a clamp (40) mounted on the clamp mounting seat and driven to close or open by the clamp mounting seat. By correspondingly arranging both an electrode mounting seat and a clamp mounting seat on the drive mechanism, the electrode and the clamp are correspondingly arranged on the same welding tongs and form an integral structure, the welding tongs can perform integral drive and control via the power element, solving the problems of conventional welding tongs being relatively remote from the clamp clamping the workpiece, and the mounting and positioning, etc. being inconvenient for control and manipulation because the two are arranged separately. In addition, control and automated manipulation are facilitated by the drive mechanism performing integrated driving to enable integrated control.

Description

Welding tongs

Technical field

The present invention relates to a welding apparatus, and more particularly to a welding tong.

Background technique

Most automobile manufacturers at home and abroad use resistance spot welding for body welding. The manual welding method has low cost but unstable welding quality, and the robot welding unit has a large investment, high production cost and high maintenance cost. In order to reduce production costs without affecting the quality of welding, many manufacturers have begun to research and use automatic welding equipment for single-tube. At present, the conventional automatic welding tongs have many disadvantages, such as a large installation space, a long distance between the welding points and the clamping points, and no compensation for the wear of the lower electrode of the welding tongs. These shortcomings cause distortion of the solder joints on the surface of the part, which seriously affects the quality of the solder.

Summary of the invention

Based on this, it is necessary to provide a welding tong that can improve the welding quality.

A welding tongs comprising: a power component that provides driving power, a driving mechanism that is coupled to the power component and that is driven by the power component, an electrode mounting that is coupled to the driving mechanism and driven by the driving mechanism, and an installation An electrode on the electrode mount and driven by the electrode mount to perform a closing operation or an open state, a chuck connected to the driving mechanism and driven by the driving mechanism and disposed correspondingly to the electrode mounting seat A mount, a collet mounted on the collet mount and driven by the collet mount to perform a closing or opening action.

In a preferred embodiment, further comprising a rotating bracket rotatably coupled to the collet mount or the electrode mount, the connection position of the collet mount or the electrode mount to the swivel bracket forming a rotation point, The electrode includes a corresponding first electrode and a second electrode, the chuck is disposed corresponding to the first electrode, and the chuck mounting seat is provided with a chuck slider for movably connecting with the driving mechanism, a rotating point of the chuck slider and the chuck opposite the chuck mounting seat is disposed at opposite ends of the chuck mounting seat, and the electrode mounting seat is provided with an electrode sliding member to move with the driving mechanism The rotation point of the electrode slider and the first electrode opposite to the electrode mounting seat is disposed at opposite ends of the electrode mounting seat.

In a preferred embodiment, the power element drives the drive mechanism to move linearly, and the drive mechanism package The chute assembly is provided with a collet chute that cooperates with the collet slider, and the chute assembly is provided with an electrode chute that cooperates with the electrode sliding member to slide .

In a preferred embodiment, the collet slider or electrode slider is a bearing that cooperates with the collet chute or electrode chute and slides along the collet chute or electrode chute; The chute assembly drives the collet mount to open before the electrode mount.

In a preferred embodiment, the collet mount is disposed opposite to the electrode mount, and the chute assembly includes: a collet drive portion and an electrode drive portion that are oppositely disposed, and the collet chute is disposed at the In the chuck driving portion, the electrode chute is provided on the electrode driving portion.

In a preferred embodiment, the electrode chute is a slot-shaped chute; the collet chute is a serpentine chute, and includes: a driving portion disposed in parallel with the electrode chute and a device The delay portion formed by bending and extending the driving portion; the delay portion is disposed relatively close to one end of the power element; the rotation radius of the chuck mounting seat around the rotation point is smaller than the rotation radius of the first electrode mounting seat.

In a preferred embodiment, the electrode slider is disposed perpendicularly or nearly perpendicularly along the moving path of the electrode chute along the moving path of the chute assembly; the movement track of the collet slider along the delay portion Parallel or nearly parallel to the movement path of the chute assembly, the movement path of the collet slider along the driving portion is disposed substantially perpendicular to the movement path of the chute assembly.

In a preferred embodiment, the collet mount or the electrode mount is provided as a wrap, the rotation point is disposed at a corner of the clip, the collet and the chuck slide, or The first electrode and the electrode slider are disposed at both ends of the wing.

In a preferred embodiment, the driving mechanism further includes a second electrode mounting seat on which the second electrode is mounted, and the rotating bracket is disposed on the second electrode mounting seat.

In a preferred embodiment, the second electrode mount is configured to dispose the second electrode connector to mount the second electrode, and the second electrode mount further includes: connecting and mounting the second electrode connector A corner-shaped mounting portion.

In a preferred embodiment, the method further includes a positioning block disposed corresponding to the chuck and cooperating with the chuck, and a positioning block mounting seat for mounting the positioning block, disposed on the first electrode Installed with the first electrode An insulating plate between the seats, and a signal switch for sensing the movement stroke or position of the driving mechanism.

In a preferred embodiment, the driving mechanism further includes a first side plate, a second side plate disposed on opposite sides of the sliding slot assembly and movably connected to the sliding slot assembly, and corresponding to the a first accessory mounting shell and a second accessory mounting shell connected to the first side panel and the second side panel; the first side panel or the second side panel is provided with a guiding slot for guiding movement of the sliding slot assembly; A movement space of the chute assembly is formed between the first side plate and the second side plate.

In a preferred embodiment, the chuck includes: a collet body, a position adjusting member coupled to the collet body and movable relative to the collet body to adjust an operating position of the collet, and a setting In the preferred embodiment, the collet body includes: a collet head, an adjustment portion extending from the collet head and being adjusted to cooperate with the position adjusting member; a thread adjusting member that is screwed to the adjusting portion and adjusts an operating position of the chuck body by thread feeding, the clamping force adjusting member being sleeved in a preferred embodiment, the second The electrode includes: an electrode holder, an adjusting device screwed to the electrode holder and adjusting a position of the electrode holder, and a threaded electrode cap screwed to the electrode holder.

In a preferred embodiment, the threaded electrode cap includes: a connecting portion of a threaded structure, and a working portion of a polygonal body structure connected to the connecting portion; the threaded electrode cap and the adjusting device are disposed in the mounting The opposite ends of the seat, the electrode holder is further connected with a connecting copper plate.

In a preferred embodiment, the first electrode includes: an electrode arm connected to the electrode mount, a grip connected to the electrode arm, and an electrode cap connected to the grip; the electrode cap and The grips are connected by a taper fit structure.

In a preferred embodiment, a second electrode mount is further included, the first electrode mount and the second electrode mount being coupled by the rotating member and rotated by the rotating member relative to the second electrode mount.

The above-mentioned welding tongs are provided with the corresponding electrode mounting seat and the chuck mounting seat at the same time on the driving mechanism, so that the electrode and the chuck are correspondingly disposed on the same welding tongs, and form an integral structure, which can be integrally driven by the power component. Control, which solves the problem that the traditional welding tongs are far apart from the clamps holding the workpiece, and the two separate settings It is inconvenient to control the operation of the positioning, etc., and the drive mechanism is uniformly driven to make uniform control, which is convenient for control and automation.

The other chute assembly drives the first electrode mount movably connected to the electrode chute assembly through the chute to open and close the driving electrode, and the linear motion of the power component such as the cylinder drive chute assembly is converted into the chute assembly. The rotary motion of the connected electrode mount enables the switching of the open state and the working state of the electrode by the rotary motion, and the control of the linear motion of the slide component by the power component can precisely control the formation of the opening or closing process of the electrode, facilitating the whole Automatic realization and accurate control of the welding process, and convenient control of the opening or closing force; at the same time, the linear motion of the cylinder is converted into the rotary motion of the electrode mount by the chute assembly, even if the power component such as the cylinder fails, the chute The component acts as a buffer in the middle to avoid damage caused by strong impact of the upper and lower electrodes, thereby protecting the upper and lower electrodes while avoiding the impact force caused by direct driving of the cylinder.

DRAWINGS

1 is a schematic structural view of a welding tong according to an embodiment of the present invention;

2 is a schematic exploded view of a welding tong according to an embodiment of the present invention;

3 is a schematic exploded view of a driving mechanism of a welding tong according to an embodiment of the present invention;

4 is a schematic structural view of a chute assembly of a welding tong according to an embodiment of the present invention;

5 is a schematic structural view of another embodiment of a sliding jaw assembly of a welding tong according to an embodiment of the present invention; FIG. 6 is a structural schematic view showing a state in which the welding tongs are closed on the electrode side according to an embodiment of the present invention; FIG. 8 is a structural schematic view showing the welding tongs of the embodiment of the present invention in a state in which the welding tongs are closed on the side of the electrode; FIG.

9 is a schematic structural view showing an open state of a welding tong on one side of a chuck according to an embodiment of the present invention; FIG. 10 is a schematic structural view of a collet according to an embodiment of the present invention;

Figure 11 is a schematic structural view of an electrode according to an embodiment of the present invention;

FIG. 12 is a schematic exploded view of a welding electrode according to an embodiment of the present invention.

detailed description

As shown in FIG. 1 to FIG. 9, a welding tong 100 according to an embodiment of the present invention includes: a power element that provides driving power a member 102, a driving mechanism 20 connected to the power element 102 and driven by the power element 102, an electrode mounting seat 24 connected to the driving mechanism 20 and driven by the driving mechanism 20, and mounted on the electrode mounting seat 24 and configured by the electrode The mounting seat 24 drives an electrode for performing a closing operation or an open state, a chuck mounting seat 26 connected to the driving mechanism 20 and driven by the driving mechanism 20, mounted on the chuck mounting seat 26, and driven by the chuck mounting seat 26. A closing clamp is used to fix the workpiece to be machined or to release the chuck 40 that performs the opening action. In this embodiment, the electrode mount 24 is disposed corresponding to the collet mount 26. Further, preferably, the electrode mount 24 is disposed side by side with the collet mount 26.

In the present embodiment, preferably, the power element 102 uses a cylinder to provide driving power. In this embodiment, the electrode: includes a correspondingly disposed first electrode 30 and second electrode 50. Further, in this embodiment, the collet 40 is disposed corresponding to the first electrode 30. The driving mechanism 20 drives the electrode mounting seat 24 to drive the first electrode 30 to close to the second electrode 50 to perform the butting welding operation. When the welding is completed, the driving mechanism 20 drives the electrode mounting seat 24 to drive the first electrode 30 away from the second electrode 50. Implement the open state. At the same time, the driving mechanism 20 drives the chuck mounting seat 26 to drive the collet 40 to close to clamp and fix the workpiece to be processed for work. When the welding is completed, the first electrode 30 performs an opening action, and when opened to the set position, the driving mechanism 20 The chuck mount 26 is also driven to drive the collet 40 to release to effect an opening action, and simultaneously achieve a final open state with the first electrode 30.

Further, the drive mechanism 20 of the present embodiment includes: a chute assembly 22 that is driven linearly by the power element 102. The electrode mount 24 is coupled to the chute assembly 22 and driven by the chute assembly 22 to drive the first electrode 30 to effect a closing and opening action. The collet mount 26 is also coupled to the chute assembly 22 and is driven by the chute assembly 22 to drive the collet 40 to effect a closing and opening action.

The chute assembly 22 includes: a collet driving portion 222 and an electrode driving portion 224 which are oppositely disposed. The collet drive unit 220 is provided with a collet chute 2222 that cooperates with the collet mount 26. The electrode driving portion 224 is provided with an electrode chute 2242 that cooperates with the electrode mount 24.

The collet mount 26 is provided with a collet slider 262 that cooperates with the collet chute 2222 and slides along the movement path provided by the collet chute 2222.

The electrode mount 24 is provided with an electrode slider 242 that cooperates with the electrode chute 2242 and moves along the path of the electrode chute 2242. In this embodiment, the preferred chuck slider 262 or the electrode slider 242 is a bearing that cooperates with the chuck chute 2222 or the electrode chute 2242 and performs rolling sliding.

Further, the welding tongs 100 of the present embodiment further includes a rotating bracket 33. The chuck mount 26 or the electrode mount 24 is provided with a rotation point for rotational connection with the rotary bracket 33 via the rotary shaft 29, and the chuck mount 26 or the electrode mount 24 is rotatable about the rotary bracket 33.

The point of contact of the collet mount 26 with the swivel bracket 33 forms the lever fulcrum of the collet mount 26. The points of rotation of the collet 40 and the collet slider 262 with respect to the collet mount 26 are provided at opposite ends of the collet mount 26. In this embodiment, by driving one end of the lever to swing the other end of the lever, the present embodiment drives or activates the chuck slider 262 disposed at one end of the lever to tilt the chuck 40 disposed at the other end of the lever, and is driven by the drive. The chuck slider 262 at one end of the lever is lifted and lowered to drive the chuck 40 disposed at the other end of the lever to perform a closing operation or a lift opening.

The contact point of the electrode mount 24 with the rotating bracket 33 forms the lever fulcrum of the electrode mount 24. The rotation points of the first electrode 30 and the electrode slider 242 opposite to the electrode mount 24 are provided at opposite ends of the electrode mount 24.

The present embodiment drives or activates the electrode slider 242 disposed at one end of the lever to tilt the first electrode 30 disposed at the other end of the lever, and drives the electrode slider 242 disposed at one end of the lever to lift and lower to drive the other end of the lever. The first electrode 30 is closed or lifted open.

Preferably, the collet mount 26 or the electrode mount 24 is provided as a wrap. The point of rotation on the collet mount 26 or electrode mount 24 is placed at the corner of the tee. The collet 40 and the collet slider 262, or the first electrode 30 and the electrode slider 242 are disposed at both ends of the wrap.

Further, the electrode slider 242 of the embodiment moves along the electrode chute 2242, and the moving path along the electrode chute 2242 is perpendicular or nearly perpendicular to the moving path of the power component 102 to drive the chute assembly 22. Further, the electrode chute 2242 of the present embodiment is provided as a one-line chute.

Further, the chuck chute 2222 of the embodiment includes: a delay portion 2223 disposed in parallel with the movement path of the power component 102 to drive the chute assembly 22, and a bending extension formed by the delay portion 2223 and driven by the power component 102 The movement path of the chute assembly 22 is a drive portion 2225 disposed vertically. Further, in this embodiment, the chuck The chute 2222 is disposed as a turn-shaped chute, and the time delay portion 2223 intersects with the driving portion 2225 to form a turn-like structure. Further, in this embodiment, the driving portion 2225 of the chuck chute 2222 is disposed in parallel or nearly parallel with the electrode sliding slot 2242. The time delay portion 2223 of the collet chute 2222 is disposed relatively close to the end of the power element 102.

Further, according to the arrangement of the chuck chute 2222 and the electrode chute 2242, in order to open, the first electrode 30 rises relative to the collet 40, and reaches the final open state in the collet 40; in this embodiment, The radius of rotation of the collet mount 26 about the fulcrum is set to be smaller than the radius of rotation of the electrode mount 24.

Further, the welding tongs 100 of the embodiment further includes: a positioning block 37, and a positioning block mounting seat 39 on which the positioning block 37 is mounted. The positioning block 37 is disposed corresponding to the collet 40, and the collet 40 is positioned to cooperate with the work to fix the workpiece to be processed.

Further, the drive mechanism 20 of the present embodiment further includes a second electrode mount 53 on which the second electrode 50 is mounted. Preferably, in order to make the structure compact, and the cylindrical structure and cost saving, the rotating bracket 33 of the present embodiment is disposed on the second electrode mount 53. Further, in order to reduce the processing and assembly processes while ensuring the working strength of the components, the rotating bracket 33 and the second electrode mounting seat 53 are integrally formed.

Further, in the present embodiment, the second electrode mount 53 is provided with the second electrode 50 by providing the second electrode connector 57.

In order to facilitate installation and to ensure the mounting strength, the second electrode mount 53 includes: a rotating bracket 33 and a mounting portion 532 connected to the rotating bracket 33. The mounting portion 532 is configured to form a wing member.

Further, further, the welding tongs 100 of the embodiment further includes: a connecting copper plate connected to the second electrode 50

35.

Further, an insulating plate 31 is disposed between the first electrode 30 and the electrode mount 24 of the present embodiment.

Further, the driving mechanism of this embodiment further includes: a first side plate 70 and a second side plate 72 movably connected to the chute assembly 22. The first side plate 70 or the second side plate 72 is provided with a guide groove 700 for restricting the movement of the chute assembly 22. A movement space for the movement of the chute assembly 22 is formed between the first side plate 70 and the second side plate 72.

The first side plate 70 and the second side plate 72 of the embodiment are respectively disposed on both sides of the chute assembly 22, and are movably connected to the electrode driving portion 224 and the chuck driving portion 222, respectively. The sliding block assembly 22 is provided with a sliding member and a first side plate The guiding groove 700 on the 70 or the second side plate 72 is cooperatively guided.

Further, the driving mechanism 20 of the embodiment further includes: a first accessory mounting shell 73 or a second accessory mounting shell 75 respectively connected to the first side panel 70 or the second side panel 72.

Further, the drive mechanism 20 of the present embodiment further includes: a support plate 77 for mounting the supporting power component. The welding tongs 100 of the present embodiment further includes a signal switch 79 that receives the motion position or motion stroke signal of the drive mechanism 20 and sends it to the control element or control system for control. The signal switch 79 is disposed on the first accessory mounting housing 73. The control element or control system receives a signal indicative of the signal switch 79 to control the actuation of the cylinder, thereby driving the drive mechanism 20 of the present embodiment to drive the first electrode or collet to achieve a closed operation or an open state.

Further, in order to protect the internal components of the drive mechanism 20 of the present embodiment, particularly the movable member, the drive mechanism 20 of the present embodiment further includes: a dust cover 97. The dustproof cover 97 is connected to the first accessory mounting case 73, or the second accessory mounting case 75, and is disposed at a gap between the first accessory mounting case 73 and the second accessory mounting case 75.

As shown in FIG. 6 to FIG. 9 , the welding tongs 100 of the present embodiment are linearly moved by providing the power component 102 , such as the cylinder drive driving mechanism 20 , thereby driving the chuck mounting seat 26 connected to the chute assembly 22 to realize the chuck mounting during welding. The seat 26 drives the collet 40 to be positioned first with respect to the first electrode 30 to clamp and hold the workpiece to be processed; after the work is completed, the driving electrode mount 24 drives the first electrode 30 to be loosened relative to the collet 40.

The electrode driving portion 224 and the chuck driving portion 222 on the two sides of the chute assembly 22 respectively have a pair of electrode chutes 2242 arranged in a single shape, and a collet chute 2222 disposed in a zigzag shape. When the welding tongs are in operation, the bearing as the electrode sliding member 242 on the electrode mounting seat 24 is arranged in a shape of the electrode chute 2242 at the end, such as the leftmost end, when the power component 102 (preferably a cylinder) begins to contract, slipping The slot assembly 22 is relatively moved downward, and the bearing on the electrode mount 24 as the electrode slider 242 slides toward the right end of the in-line type electrode chute 2242, and the electrode mount 24 drives the first electrode 30 to surround the electrode mount 24. The rotation axis, that is, the rotation point, is rotated, the welding tongs are immediately released, and the first electrode 30 is separated from the second electrode 50.

As shown in FIGS. 6-9, at the same time, the relative position of the collet-type collet chute 2222 of the bearing on the chute assembly 22 as the collet slider 262 on the collet mount 26 is vertical. At the lowermost end of the segment, when the power element 102 (preferably a cylinder) begins to contract, the chute assembly 22 moves relatively downwardly, and the collet mount 26 The bearing as the chuck slider 262 partially slides over the vertical section of the carriage-type collet chute 2222, at which time the collet mount 26 does not rotate about its rotation point until the collet mount 26 The bearing as the chuck slider 262 is at the rightmost end of the horizontal section of the jaw-shaped chute 2222 (ie, the uppermost end of the vertical portion of the jaw-shaped chute 2222), which is not before the chuck 40 In operation, the cylinder 102 continues to contract, and the bearing on the collet mount 26 as the collet slider 262 slides toward the left end of the horizontal portion of the jaw-shaped chute 2222, and the collet mount 26 drives the collet 40 around the collet. The rotating shaft mounted on the mount 26 is rotated, and the chuck 40 is released. When the power element 102 (preferably a cylinder) is retracted to a minimum stroke, the welding tongs are fully open. Since the electrode mount 24 and the collet mount 26 both rotate around the same rotation point, the rotation radius of the collet mount 26 is smaller than the rotation radius of the electrode mount 24, so that the electrode mount 24 drives the first electrode 30 to open first. The action, and the collet 40 driven by the collet mount 26, reaches the final fully open state.

When the power component 102 (preferably a cylinder) is elongated, both the electrode mount 24 and the collet mount 26 begin to rotate about their point of rotation, and the electrode mount 24 and the collet mount 26 respectively drive the first electrode 30, the clip The head 40 acts immediately; when the collet mount ₂₆ acts as the grip of the collet slider 262 at the rightmost end of the horizontal section of the collet-type collet chute 2222, the collet 40 begins to contact the positioning block 37, The first electrode 30 is not in contact with the second electrode 50; as the power element 102 continues to elongate, the bearing on the collet mount 26 as the collet slider 262 begins to be in the vertical position of the collet-type collet chute 2222 Slide straight down in the straight section, the bearing on the electrode mount 24 as the electrode slider 242 still slides leftward in the in-line electrode chute 2242 until the first electrode 30 and the second electrode 50 are in contact, the power element 102 (preferred The stroke for the cylinder is no longer increased, the bearing as the electrode slider 242 stops sliding, and the welding tongs complete the action.

As shown in Fig. 10, further, the chuck 40 of the present embodiment includes: a chuck body 402, a position adjusting member connected to the chuck body 402, and a clamping force adjusting member provided in the chuck mounting seat 26.

Further, the position adjusting member of the embodiment is sleeved on the chuck body 402, and is relatively moved on the chuck body 402 to adjust the working position of the chuck body 402.

Preferably, the position adjusting member of the embodiment is a thread adjusting member that is screwed to the chuck body 402 and adjusts the working position of the chuck body 402 by the thread feeding movement. Further, the thread adjusting member of this embodiment is a nut 405. Preferably, the clamping force adjusting member of the embodiment is disposed in the chuck mounting seat 26, and cooperates with the position adjusting member to adjust the clamping force of the chuck.

Further, the chuck body 402 of the present embodiment includes: a chuck head 4022, and a chuck adjusting portion 4024 extending from the clip head 4022 and being adjusted in cooperation with the position adjusting member and the clamping force adjusting member.

Preferably, the clamping force adjusting member of the embodiment is a spring 407 which is sleeved on the chuck body 402. Further, in the present embodiment, the spring 407 as the clamping force adjusting member is sleeved on the chuck adjusting portion 4024.

Further, in the embodiment, the collet mount 26 is provided with a collet cavity 263 for accommodating the collet body 402. Further, the chuck cavity 263 of the embodiment includes: a first cavity 2632, and a second cavity 2634 communicating with the first cavity 2632.

Further, in this embodiment, the first cavity 2632 is adapted to the size of the chuck head 4022. The clamping head portion 4022 is accommodated in the first cavity 2632, and can be moved in the first cavity 2632 by the thread feeding adjustment of the nut 405, and the cross-sectional size of the first cavity 2632 is adapted to the cross-sectional size of the clamping head 4022. It is arranged to facilitate adjusting the moving position of the collet head 4022 of the collet body 402 in the first cavity 2632, thereby adjusting the clamping working position of the collet body 402.

Further, in this embodiment, the size of the second cavity 2634 is adapted to the size of the chuck adjusting portion 4024 of the chuck body 402. Further, the chuck adjusting portion 4024 of the chuck body 402 is accommodated in the second cavity 2634, and the cross-sectional size of the second cavity 2634 is adapted to the cross-sectional size of the chuck adjusting portion 4024 of the chuck body 402. The collet adjustment portion 4024 of the chuck body 402 is facilitated to move in the second pocket 2634, thereby driving the grip head portion 4022 to move in the first pocket 2632 to adjust the clamping working position of the collet body 402. At the same time, the clamping force of the chuck body 402 is adjusted by a spring 407 which is accommodated in the first cavity 2632 and which is sleeved on the chuck adjusting portion 4024 of the chuck body 402.

Preferably, in this embodiment, the first cavity 2632 and the second cavity 2634 are two chambers of different sizes.

In this embodiment, the collet body 402 is a columnar member. The cross-sectional size of the collet head 4022 of the collet body 402 is greater than the collet adjustment portion 4024. The first cavity 2632 and the second cavity 2634 are respectively disposed corresponding to the size of the chuck portion 4022 and the chuck adjusting portion 4024 of the chuck body 402, so that the first cavity 2632 and the second cavity 2634 are disposed. It is also provided as a communicating chamber of two different cross-sectional sizes.

The spring 407 is abutted against the collet head 4022 of the collet body 402, and the other end is abutted at the junction of the first cavity 2632 and the second cavity 2634.

As shown in FIGS. 11 to 12, further, the second electrode 50 of the present embodiment includes: an electrode holder 502, and a threaded electrode cap 504 threadedly coupled to the electrode holder 502.

Further, the threaded electrode cap 504 of the present embodiment includes: a connecting portion 5042 of a screw structure connected to the electrode holder 502, and a working portion 5044 of a polygonal body structure connected to the connecting portion 5042. The threaded electrode cap 504 is provided with a working portion 5044 of a polygonal structure to increase the contact area of the threaded electrode cap 504 with the member to be processed, and is not easily worn.

Further, the screw electrode cap 504 is provided at one end of the electrode holder 502 or connected to one end of the electrode holder 502. Further, the second electrode 50 of the embodiment further includes: an adjusting device movably connected to the electrode holder 502 and adjusting the wear of the compensation screw electrode cap 504. The adjustment device and the threaded electrode cap 504 are disposed at opposite ends of the electrode holder 502.

Further, the adjusting device of this embodiment is screwed to the electrode holder 502. Preferably, the adjusting device of this embodiment is an adjusting bolt 505. The adjusting bolt 505 adjusts the height of the electrode holder 502 by the thread so that the threaded electrode cap 504 is worn out to be compensated. When the threaded electrode cap 504 is worn to a certain extent, it can be unscrewed through the connecting portion 5042 of the threaded structure for replacement. In the present embodiment, the threaded electrode cap 504 is easily replaced by a connecting portion 5042 provided with a screw structure. Further, the connecting copper plate 35 of the present embodiment is fixedly disposed on the electrode holder 502 by a fixing member.

As shown in FIG. 11 to FIG. 12, further, the first electrode 30 of the embodiment includes: an electrode arm 302 connected to the electrode mounting seat 24, a grip 304 connected to the electrode arm 302, and an electrode cap connected to the grip 304. 306.

Further, in this embodiment, the electrode cap 306 and the grip 304 are connected by a taper fit structure. The first electrode 30 compensates for the wear of the electrode cap 306 by the forming margin of the cylinder.

The above-mentioned embodiments are merely illustrative of several embodiments of the present invention, and the description thereof is more specific and detailed, but is not to be construed as limiting the scope of the invention. It should be noted that a number of variations and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention. Therefore, the scope of the invention should be determined by the appended claims.

Claims

Claim

A welding tongs, comprising: a power element that provides driving power, a driving mechanism that is coupled to the power element and driven by the power element, and is coupled to the driving mechanism and driven by the driving mechanism An electrode mount, and an electrode mounted on the electrode mount and driven by the electrode mount to perform a closing operation or an open state, connected to the drive mechanism, driven by the drive mechanism, and mounted to the electrode a correspondingly disposed collet mount, a collet mounted on the collet mount and driven by the collet mount to perform a closing or opening action; the electrode and the collet are driven by the same drive mechanism and welded During operation, the chuck is clamped before the electrode is in place. When it is opened, the electrode is opened after the chuck.

2. The welding tong according to claim 1, further comprising: a rotating bracket rotatably coupled to the collet mount or the electrode mount, the collet mount or electrode mount and the rotating bracket The connecting position forms a rotation point, the electrode includes a corresponding first electrode and a second electrode, the chuck is correspondingly disposed with the first electrode, and the chuck mounting seat is provided with a chuck sliding member to The driving mechanism is movably connected, and the rotation point of the chuck sliding member and the chuck relative to the chuck mounting seat is disposed at opposite ends of the chuck mounting seat, and the electrode mounting seat is provided with an electrode The sliding member is movably connected to the driving mechanism, and the rotating points of the electrode sliding member and the first electrode relative to the electrode mounting seat are disposed at opposite ends of the electrode mounting seat.

3. The welding tong according to claim 2, wherein: the power element drives the driving mechanism to move linearly, the driving mechanism comprises a chute assembly, and the chute assembly is provided with the collet The sliding member cooperates with the sliding chuck chute, and the sliding groove assembly is provided with an electrode sliding groove that cooperates with the electrode sliding member to slide.

4. The welding tong according to claim 3, wherein: the chuck sliding member or the electrode sliding member cooperates with the collet chute or the electrode chute and along the collet chute or electrode a bearing in which the chute rolls and slides;

The welding tongs according to claim 3, wherein the collet mounting seat is disposed opposite to the electrode mounting seat, and the chute assembly comprises: a collet driving portion and an electrode driving portion that are oppositely disposed, The chuck chute is disposed on the chuck driving portion, and the electrode sliding slot is disposed on the electrode driving portion.

The welding tong according to claim 3, wherein the electrode chute is a slot-shaped chute; the collet chute is a 拐-shaped chute, comprising: and the electrode chute a driving portion disposed in parallel and a time delay portion formed by bending and extending the driving portion; the time delay portion is disposed opposite to an end of the power component; the chuck is mounted The radius of rotation of the seat around the rotation point is smaller than the radius of rotation of the first electrode mount.

The welding tong according to claim 6, wherein the electrode sliding member is disposed perpendicularly or nearly perpendicularly along a moving path of the electrode chute along a moving path of the chute assembly; the chuck sliding member a movement trajectory along the delay portion is parallel or nearly parallel to a movement path of the chute assembly, and a movement trajectory of the chuck slider along the driving portion is disposed substantially perpendicular to a movement path of the chute assembly .

The welding tong according to any one of claims 2 to 7, wherein the collet mount or the electrode mount is provided as a wing, and the rotation point is disposed on the wing At the corner, the collet and the chuck slider, or the first electrode and the electrode slider are disposed at both ends of the wing.

The welding tong according to any one of claims 2 to 7, wherein the driving mechanism further comprises a second electrode mounting seat on which the second electrode is mounted, and the rotating bracket is disposed in the second On the electrode mount.

The welding tong according to claim 9, wherein the second electrode mounting seat is provided with a second electrode connecting seat to mount the second electrode, and the second electrode mounting base further comprises: a connection A wing-shaped mounting portion of the second electrode connector is mounted.

The welding tong according to any one of claims 2 to 7, further comprising a positioning block disposed corresponding to the collet and cooperating with the collet to fix the workpiece, and mounting the positioning a positioning block mount of the block, an insulating plate disposed between the first electrode and the first electrode mounting seat, and a signal switch for sensing a motion stroke or position of the driving mechanism.

The welding tong according to any one of claims 3 to 7, wherein: the driving mechanism further comprises a first one disposed on opposite sides of the chute assembly and movably connected to the chute assembly a side panel, a second side panel, and a first accessory mounting shell and a second accessory mounting shell respectively connected to the first side panel and the second side panel; and the first side panel or the second side panel There is a guiding groove for guiding movement of the chute assembly; a movement space of the chute assembly is formed between the first side plate and the second side plate.

The welding tong according to any one of claims 1 to 7, wherein the collet comprises: a collet body connected to the collet body and moving and adjusting relative to the collet body a position adjusting member for the working position of the chuck, and a clamping force adjusting member disposed in the chuck mounting seat and configured to adjust the clamping force of the chuck body in cooperation with the position adjusting member.

The welding tong according to claim 13, wherein: the chuck body comprises: a clamping head, an adjusting portion extending from the clamping head and being adjusted in cooperation with the position adjusting member; Position adjustment member The adjusting portion is screwed and threaded to adjust a thread adjusting member for adjusting the working position of the chuck body. The welding tong according to any one of claims 2 to 7, characterized in that: the second electrode The method includes: an electrode holder, an adjusting device screwed to the electrode holder and adjusting a position of the electrode holder, and a threaded electrode cap screwed to the electrode holder. The welding tong according to claim 15, wherein: the threaded electrode cap comprises: a connecting portion of a threaded structure; and a working portion of a polygonal body structure connected to the connecting portion; The adjusting device is disposed at opposite ends of the mounting seat, and the electrode holder is further connected with a connecting copper plate.

The welding tong according to any one of claims 1 to 7, wherein: the first electrode comprises: an electrode arm connected to the electrode mounting seat, a grip connected to the electrode arm, and a seat An electrode cap connected to the grip rod; the electrode cap and the grip rod are connected by a taper fit structure.