CN217224290U

CN217224290U - Compact heap and welding set

Info

Publication number: CN217224290U
Application number: CN202220420877.6U
Authority: CN
Inventors: 不公告发明人
Original assignee: Wuxi Lead Intelligent Equipment Co Ltd
Current assignee: Wuxi Lead Intelligent Equipment Co Ltd
Priority date: 2022-02-28
Filing date: 2022-02-28
Publication date: 2022-08-19
Anticipated expiration: 2032-02-28
Also published as: WO2023160293A1

Abstract

The utility model relates to a compact heap, including this somatic part, first location portion and second location portion, first location portion is a plurality of. The body part is provided with a first positioning surface, the plurality of first positioning parts are arranged on the first positioning surface so as to form a positioning space by enclosing the first positioning surface, and the positioning space is used for accommodating and positioning the top cover and the end part of the shell; the second positioning portion is arranged on the first positioning surface, at least part of the second positioning portion is located in the positioning space, one end, away from the first positioning surface, of the second positioning portion is provided with a butt plane, and the butt plane is used for being in butt joint with the top cover. And inserting the top cover of the battery and the end part of the shell into the positioning space for positioning, and then welding the top cover and the shell. Because the tip of top cap and casing all stretches into the location space and fixes a position, the side of event top cap and the side of casing are in the coplanar to improve the welding quality between top cap and the casing, and then improve battery quality. The utility model discloses still relate to a welding set.

Description

Compact heap and welding set

Technical Field

The utility model relates to a lithium battery processing technology field especially relates to a compact heap and welding set.

Background

During the production of the battery, the top cover needs to be welded to the end of the battery case, specifically, the top cover is pressed against the end of the case and then welded to close the battery. When the top cover is pressed on the end part of the shell by the existing welding equipment, the side edge of the top cover and the side surface of the shell are not in the same plane due to lower positioning precision, so that the welding quality between the top cover and the shell is poor, and the quality of a battery is influenced.

SUMMERY OF THE UTILITY MODEL

In view of this, it is necessary to provide a compact and a welding apparatus capable of improving the welding quality between the top cover and the case and ensuring the battery quality, in order to solve the problem of poor welding quality between the top cover and the case of the existing welding apparatus.

A compact block comprising:

a body part having a first positioning surface;

the first positioning parts are arranged on the first positioning surface to form a positioning space in an enclosing manner with the first positioning surface, and the positioning space is used for accommodating and positioning the top cover and the end part of the shell; and

the second positioning part is arranged on the first positioning surface, at least part of the second positioning part is located in the positioning space, one end, far away from the first positioning surface, of the second positioning part is provided with a butting plane, and the butting plane is used for being abutted against the top cover.

Through setting up foretell compact heap, insert the tip of the top cap of battery and casing and fix a position in the location space, until top cap and butt plane looks butt, it can to weld top cap and casing next. Because the tip of top cap and casing all stretches into the location space and fixes a position, the side of event top cap is in the coplanar with the side of casing to improve the welding quality between top cap and the casing, and then improve battery quality.

In one embodiment, the first positioning surface is further provided with a avoiding groove, and one end of the avoiding groove penetrates through a side surface of the main body part adjacent to the first positioning surface.

In one embodiment, each of the first positioning portions has a second positioning surface, the second positioning surfaces of the plurality of first positioning portions and the first positioning surface enclose the positioning space, and a guide surface is engaged between one end of each of the first positioning portions, which is far away from the first positioning surface, and the second positioning surface, which is used for guiding the top cover and the end of the housing into the positioning space.

A welding device comprises a mounting plate, a clamping assembly and a pressing assembly, wherein the clamping assembly and the pressing assembly are arranged on the mounting plate, the clamping assembly is used for clamping a shell, and the pressing assembly comprises the pressing block;

the shell and the pressing block clamped by the clamping assembly are arranged at intervals in a first direction and can approach and depart from each other, and pressing positions are arranged in the process that the shell and the pressing block clamped by the clamping assembly approach and depart from each other;

when the shell clamped by the clamping assembly and the pressing block are located at the pressing position, the top cover and the end part of the shell extend into the positioning space, and the abutting plane abuts against the top cover.

In one embodiment, the pressing assembly further comprises a pressing driving member, the pressing driving member is disposed on the mounting plate and is in transmission connection with the pressing block to drive the pressing block to move back and forth along the first direction.

In one embodiment, the welding device comprises two groups of the pressing assemblies, the two groups of the pressing assemblies are arranged at intervals along the first direction, two pressing blocks can move back and forth along the first direction, and each pressing block has the pressing position in the moving process;

when the two pressing blocks are located at the pressing positions, one end, corresponding to the shell, of one of the top covers extends into one of the positioning spaces, the other end, corresponding to the shell, of the other top cover extends into the other positioning space, and the two abutting planes abut against the two top covers respectively.

In one embodiment, the clamping assembly comprises a clamping driving member and a clamping member, wherein the clamping driving member is arranged on the mounting plate and is in transmission connection with the clamping member so as to drive the clamping member to clamp and release the shell.

In one embodiment, the welding device further includes a rotating plate rotatably disposed on the mounting plate about a rotation axis parallel to the first direction, and the clamping assembly and the pressing assembly are both disposed on the rotating plate.

In one embodiment, the welding device further comprises a large plate, the mounting plate is arranged on the large plate in a reciprocating manner along a second direction perpendicular to the first direction, and the mounting plate has a feeding position and a welding position in the process of moving;

the clamping assembly may receive a housing when the mounting plate is in the loading position;

a welding assembly may weld the housing and the top cover when the mounting plate is in the welding position.

In one embodiment, the welding device further comprises a limiting assembly, wherein the limiting assembly is arranged on the large plate and used for enabling the mounting plate to move back and forth between the feeding position and the welding position.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of a pressing block according to an embodiment of the present invention;

FIG. 2 is a schematic top view of the compact of FIG. 1;

FIG. 3 is a right side view schematic diagram of the compact block of FIG. 1 engaged with a housing;

fig. 4 is a schematic structural diagram of a welding device according to another embodiment of the present invention;

FIG. 5 is a schematic diagram of a right side view of the welding device shown in FIG. 4;

FIG. 6 is a schematic view of a portion of the components of the welding apparatus shown in FIG. 4;

fig. 7 is a top view of a portion of the components shown in fig. 6.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

As shown in fig. 1 to 3, a pressing block 11 according to an embodiment of the present invention includes a main body 111, a first positioning portion 112 and a second positioning portion 113, where the first positioning portion 112 includes a plurality of positioning portions.

The main body 111 has a first positioning surface 114, and the plurality of first positioning portions 112 are disposed on the first positioning surface 114 to form a positioning space for accommodating and positioning the end portions of the top cover and the housing.

The second positioning portion 113 is disposed on the first positioning surface 114, and at least a portion of the second positioning portion 113 is located in the positioning space, an abutting plane 115 is disposed at an end of the second positioning portion 113 away from the first positioning surface 114, and the abutting plane 115 is used for abutting against the end portions of the top cover and the housing.

Through setting up foretell compact heap 11, insert the tip of the top cap of battery and casing and fix a position in the location space, until top cap and butt plane 115 looks butt, it can to weld top cap and casing next. Because the tip of top cap and casing all stretches into the location space and fixes a position, the side of event top cap and the side of casing are in the coplanar to improve the welding quality between top cap and the casing, and then improve battery quality.

It should be explained that the plurality of first positioning portions 112 and the first positioning surface 114 enclose a positioning space, the end portions of the top cover and the housing can extend into the positioning space, and the top cover can abut against the abutting plane 115 of the second positioning portion 113 far away from the first positioning surface 114, so that the first positioning portions 112 and the second positioning portions 113 protrude out of the height of the first positioning surface 114, specifically, the distance that the first positioning portions 112 and the second positioning portions 113 extend out of the first positioning surface 114 along the up-down direction in fig. 2.

Thus, after the end portions of the top cover and the shell extend into the positioning space, the first positioning portions 112 can abut against the side edges of the top cover and the side surfaces of the shell to position the end portions of the top cover and the shell, so that the side edges of the top cover and the side surfaces of the shell are located on the same plane, the abutting plane 115 can abut against the top cover, the top cover and the shell are in close contact with each other, and welding quality is further improved.

In addition, it is determined that the plurality of first positioning portions 112 are arranged to arrange the plurality of first positioning portions 112 at intervals so as to expose the position where welding is required between the top cover and the housing, thereby facilitating welding of the top cover and the housing.

In some embodiments, the first locating surface 114 is used to abut the pole, i.e. the first locating surface 114 abuts the pole when the end of the cover and housing abut the abutment plane 115. It can be understood that the height of the second positioning portion 113 protruding from the first positioning surface 114 can be determined according to the length of the pole extending out of the housing.

In some embodiments, each of the first positioning portions 112 has a second positioning surface, the second positioning surfaces of the plurality of first positioning portions 112 surround the first positioning surface 114 to form a positioning space, and a guiding surface 116 is engaged between an end of each of the first positioning portions 112 away from the first positioning surface 114 and the second positioning surface, the guiding surface 116 is used for guiding the end of the top cover and the end of the housing into the positioning space.

It will be appreciated that the guide surface 116 is disposed obliquely with respect to the second positioning surface and the end surface of the first positioning portion 112 at the end away from the first positioning surface 114, i.e., the guide surface 116 is formed by chamfering the end of the first positioning portion 112 away from the first positioning surface 114 to guide the end of the cover and the housing into the positioning space.

In some embodiments, the first positioning surface 114 further defines an avoiding groove 117, and one end of the avoiding groove 117 penetrates through a side surface of the main body 111 adjacent to the first positioning surface 114.

In practical applications, two ends of the avoiding groove 117 respectively penetrate through the surface of the main body 111, which is adjacent to the first positioning surface 114 and located at two opposite sides.

Referring to fig. 4 to 6, a welding apparatus 100 includes a pressing assembly 10, and the pressing assembly 10 includes the pressing block 11 in the above embodiment.

Further, the welding device 100 further includes a mounting plate 21 and a clamping assembly 30, the clamping assembly 30 and the pressing assembly 10 are both disposed on the mounting plate 21, and the clamping assembly 30 is used for clamping the housing.

Furthermore, the shell and the pressing block 11 clamped by the clamping assembly 30 are arranged at intervals in the first direction and can be close to and away from each other, and the shell and the pressing block 11 clamped by the clamping assembly 30 have pressing positions in the process of being close to and away from each other.

When the shell and the pressing block 11 clamped by the clamping assembly 30 are in the pressing position, the top cover and the end part of the shell extend into the positioning space, and the abutting plane 115 abuts against the top cover.

Wherein the first direction is a left-right direction in fig. 4.

Initially, the shell is clamped and fixed through the clamping assembly 30, the shell is longitudinally arranged along the first direction, the shell on the clamping assembly 30 and the pressing block 11 are arranged at intervals, and meanwhile, the end portion of the shell on the clamping assembly 30 is provided with a top cover. Then make casing and compact heap 11 on the centre gripping subassembly 30 be close to each other along first direction, until top cap and butt plane 115 butt, the tip of top cap and casing then stretches into in the location space on the compact heap 11 this moment, then weld top cap and casing can.

It should be explained that the housing is loaded to the clamping assembly 30 through the loading assembly, and during the loading process, the clamping jaws of the loading assembly clamp two ends of the housing, and the avoiding groove 117 on the first positioning surface 114 can accommodate the clamping jaws, thereby realizing avoiding of the clamping jaws.

It should be noted that the housing on the clamping assembly 30 and the pressing block 11 may be close to and away from each other, or the clamping assembly 30 may be capable of reciprocating along a first direction, so as to drive the housing clamped by the clamping assembly 30 to reciprocate along the first direction to close to and away from the pressing block 11; it is also possible that the holding-down block 11 is reciprocally movable in the first direction so as to approach and separate from the housing held on the holding assembly 30.

Further, it is also possible that both the clamp assembly 30 and the holding-down block 11 are reciprocally movable in the first direction, but it is preferable that one of the clamp assembly 30 and the holding-down block 11 is fixed and the other is reciprocally movable in the first direction.

In some embodiments, the welding device further comprises a large plate 22, the mounting plate 21 is reciprocally movably arranged on the large plate 22 along a second direction perpendicular to the first direction, and the mounting plate 21 has a feeding position and a welding position during movement.

The clamp assembly 30 may receive the housing when the mounting plate 21 is in the loading position; the welding assembly may weld the housing and the top cover when the mounting plate 21 is in the welding position.

Wherein the first direction is a left-right direction in fig. 4, and the second direction is an up-down direction in fig. 4.

In addition, it should be noted in connection with fig. 4 that, when the mounting plate 21 is loaded, the mounting plate 21 is lowered to the loading position, the clamping jaws of the loading assembly clamp both ends of the housing and place the housing on the clamping assembly 30, the clamping assembly 30 receives the side of the housing and clamps the side of the housing, the clamping jaws of the loading assembly are separated from the housing, then the mounting plate 21 is raised to the welding position, the pressing block 11 positions the housing and the top cover, and the welding assembly welds the housing and the top cover.

It will be appreciated that the housing to which the loading assembly loads is provided with a lid.

Further, the welding device further comprises a lifting driving member 23, wherein the lifting driving member 23 is disposed on the large plate 22 and is in transmission connection with the mounting plate 21 to drive the mounting plate 21 to reciprocate along the second direction.

In practice, the lifting driving member 23 may be a pneumatic cylinder or an electric cylinder.

In some embodiments, the welding device further comprises a limiting assembly 24, and the limiting assembly 24 is arranged on the large plate 22 and used for enabling the mounting plate 21 to move back and forth between the loading position and the welding position, namely limiting the movement of the mounting plate 21.

In practical application, the limiting assembly 24 includes a first limiting block 241 and a second limiting block 242, the first limiting block 241 and the second limiting block 242 are arranged on the large plate 22 at intervals along the second direction, and the mounting plate 21 can abut against the first limiting block 241 and the second limiting block 242 respectively in the process of moving along the second direction.

In other words, as shown in fig. 4, the first stopper 241 is located above the second stopper 242, the mounting plate 21 may abut against the first stopper 241 when the mounting plate 21 is lifted up, and when the mounting plate 21 abuts against the first stopper 241, the mounting plate 21 is located at the welding position, and when the mounting plate 21 is lifted down, the mounting plate 21 may abut against the second stopper 242, and when the mounting plate 21 abuts against the second stopper 242, the mounting plate 21 is located at the loading position.

In some embodiments, the welding device further includes a rotating plate 25, the rotating plate 25 is rotatably disposed on the mounting plate 21 about a rotation axis parallel to the first direction, and the clamping assembly 30 and the pressing assembly 10 are both disposed on the rotating plate 25. So, accessible rotor plate 25 rotates and drives the casing rotation to realize that the welding subassembly is after the one side of welding the casing, rotor plate 25 drives the casing rotation, and the welding subassembly welds the another side of casing.

It is confirmed that the housing is rotated during the rotation of the rotation plate 25 about the rotation axis by adjusting the position of the clamping assembly 30 in order to ensure that the welding position is not changed.

Further, the welding device further includes a rotation driving member 26, and the rotation driving member 26 is disposed on the mounting plate 21 and is in transmission connection with the rotation plate 25 to drive the rotation plate 25 to rotate around the rotation axis.

In practical applications, the rotating plate 25 is rotatably disposed on the mounting plate 21 through a bracket and a rotating shaft, and the rotating driving member 26 is a motor, and the rotating driving member 26 is in transmission connection with the rotating shaft.

Referring to fig. 6 and 7, in some embodiments, the pressing assembly 10 further includes a pressing driving member 12, and the pressing driving member 12 is disposed on the mounting plate 21 and is in transmission connection with the pressing block 11 to drive the pressing block 11 to move back and forth along the first direction.

Thus, it can be understood that, in the embodiment, the clamping assembly 30 is fixed, and the pressing block 11 moves back and forth along the first direction, so that the pressing position is provided during the process that the pressing block 11 moves back and forth along the first direction, and when the pressing block 11 is located at the pressing position, the end portions of the top cover and the housing extend into the positioning space, and the abutting plane 115 abuts against the top cover.

In addition, it should be explained that the movement of the pressing block 11 to the pressing position refers to the position of the pressing block 11 relative to the housing on the clamping assembly 30. Therefore, when the pressing block 11 is movable, the housing of the clamping assembly 30 and the pressing block 11 have a pressing position in the process of moving toward and away from each other, which is referred to as the pressing position of the pressing block 11.

Further, the pressing assembly 10 further includes a pressing connector 13, the pressing driver 12 is disposed on the rotating plate 25, and the pressing connector 13 is connected between the pressing driver 12 and the pressing block 11.

Wherein, the rotating plate 25 is provided with a through hole, one end of the compressing connecting piece 13 is connected to the compressing driving piece 12, and the other end passes through the through hole and is connected with the compressing block 11.

In practice, the compression driver 12 is an air cylinder or an electric cylinder.

In some embodiments, the welding device includes two sets of pressing assemblies 10, the two sets of pressing assemblies 10 are arranged at intervals along a first direction, two pressing blocks 11 are both movable in a reciprocating manner along the first direction, and each pressing member has a pressing position during movement.

When two compact heap 11 all are in the position that compresses tightly, one of them top cap stretches into one of them locating space with the one end that the casing corresponds, and wherein another top cap stretches into one of them locating space with the other end that the casing corresponds, and two butt plane 115 butt respectively in two top caps to improve the welding quality between casing both ends and two top caps.

Of course, in other embodiments, since the pressing block 11 is integrally formed, the manufacturing difficulty is high, and the cost is high, so the pressing block 11 may be disposed at one end of the housing, and the pressing driving member 12 may be disposed at the other end, but a conventional pressing block is adopted to reduce the cost.

In some embodiments, the clamping assembly 30 includes a clamping driving member 31 and a clamping member 32, the clamping driving member 31 is disposed on the mounting plate 21 and is in driving connection with the clamping member 32 to drive the clamping member 32 to clamp and release the housing.

Further, the clamping assembly 30 further includes a clamping base 33 and a clamping connector, the clamping base 33 is disposed on the rotating plate 25, the clamping driving member 31 is disposed on the clamping base 33 and is in transmission connection with the clamping connector, and the clamping member 32 is connected with the clamping connector.

In practical application, centre gripping driving piece 31 is the gas claw, and centre gripping driving piece 31 drive 32 centre gripping casing is along the relative both sides of second direction to make centre gripping piece 32 with the casing centre gripping back, the casing is arranged along first direction lengthwise, and its both ends expose, make things convenient for in the tip of top cap and casing stretches into compact heap 11's location space.

In some embodiments, the clamping member 32 includes a first clamping jaw 34 and a second clamping jaw 35, the first clamping jaw 34 and the second clamping jaw 35 are spaced apart from each other and can move toward and away from each other to clamp and release the housing, and the clamping driving member 31 is drivingly connected to the first clamping jaw 34 and the second clamping jaw 35.

In practical application, the clamping assembly 30 further includes a clamping limiting member 36, the clamping limiting member 36 is disposed on the clamping base 33, and the first clamping jaw 34 and the second clamping jaw 35 can abut against the clamping limiting member 36 in a mutual approaching process, so that the clamping limiting member 36 limits a mutual approaching distance between the first clamping jaw 34 and the second clamping jaw 35, and the casing is prevented from being damaged, and the battery quality is prevented from being affected.

In some embodiments, the clamping assemblies 30 comprise two sets, and the two sets of clamping assemblies 30 are spaced apart along the first direction, so as to improve the stability of clamping the housing.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A compact block, comprising:

a body part having a first positioning surface;

the first positioning parts are arranged on the first positioning surface so as to form a positioning space in an enclosing manner with the first positioning surface, and the positioning space is used for accommodating and positioning the top cover and the end part of the shell; and

the second positioning part is arranged on the first positioning surface, at least part of the second positioning part is located in the positioning space, one end, far away from the first positioning surface, of the second positioning part is provided with a butt joint plane, and the butt joint plane is used for being in butt joint with the top cover.

2. The compact block of claim 1, wherein the first positioning surface further defines a clearance groove, and one end of the clearance groove extends through a side surface of the body portion adjacent to the first positioning surface.

3. The compact of claim 1, wherein each of the first positioning portions has a second positioning surface, the second positioning surfaces of the first positioning portions and the first positioning surfaces enclose the positioning space, and a guide surface is engaged between an end of each of the first positioning portions, which is away from the first positioning surface, and the second positioning surface, which is used to guide the end of the top cover and the end of the housing into the positioning space.

4. A welding device is characterized by comprising a mounting plate, a clamping assembly and a pressing assembly, wherein the clamping assembly and the pressing assembly are arranged on the mounting plate, the clamping assembly is used for clamping a shell, and the pressing assembly comprises the pressing block as claimed in any one of claims 1 to 3;

5. The welding device of claim 4, wherein the hold-down assembly further comprises a hold-down drive disposed on the mounting plate and drivingly coupled to the hold-down block to drive the hold-down block to reciprocate in the first direction.

6. The welding device according to claim 4, wherein the welding device comprises two groups of the pressing assemblies, the two groups of the pressing assemblies are arranged at intervals along the first direction, two pressing blocks are capable of moving back and forth along the first direction, and each pressing block has the pressing position during moving;

7. The welding device of claim 4, wherein the clamping assembly comprises a clamping drive member and a clamping member, the clamping drive member being disposed on the mounting plate and drivingly coupled to the clamping member for driving the clamping member to clamp and release the housing.

8. The welding device of claim 4, further comprising a rotating plate rotatably disposed to the mounting plate about an axis of rotation parallel to the first direction, wherein the clamping assembly and the hold-down assembly are both disposed to the rotating plate.

9. The welding device according to claim 4, further comprising a large plate, wherein the mounting plate is arranged on the large plate in a reciprocating manner along a second direction perpendicular to the first direction, and the mounting plate has a feeding position and a welding position during movement;

10. The welding device of claim 9, further comprising a stop assembly disposed on the large plate for reciprocating the mounting plate between the loading position and the welding position.