CN218311572U - Positioning mechanism and welding device - Google Patents

Abstract

The utility model relates to a positioning mechanism. This positioning mechanism includes: the supporting assembly is used for supporting a part to be welded; the first abutting component is provided with a spherical rolling part; the second abutting component is provided with an abutting head which is arranged opposite to the spherical rolling part in the first direction, and the supporting component is positioned between the abutting head and the spherical rolling part; the butting head and the spherical rolling part are used for clamping a part to be welded together along a first direction, the butting head can rotate around a rotation axis parallel to the first direction, and the part to be welded drives the spherical rolling part to roll. Therefore, in the process that the abutting head drives the to-be-welded part to rotate, the spherical rolling part can roll in a self-adaptive mode within a small range of the end face of the to-be-welded part, and even when the position of the spherical rolling part relative to the abutting head and the to-be-welded part deviates, the abutting head can drive the to-be-welded part to stably rotate around the axis of the abutting head, and then accurate welding is carried out.

Description

Positioning mechanism and welding device

Technical Field

The utility model relates to a battery manufacture equipment technical field especially relates to a positioning mechanism and welding set.

Background

In the production process of batteries, particularly cylindrical batteries, a steel shell for accommodating a battery core comprises a shell and a cover body, wherein the cover body covers one end of the shell with an opening, and the cover body and the shell are welded into a whole by a welding head. When the steel shell is welded, the steel shell needs to be positioned by the positioning mechanism. Generally, the positioning mechanism is respectively abutted against two ends of the steel shell through the abutting block and the fixing block, and then the steel shell is driven to rotate through the abutting block, so that the welding head performs welding operation on the circumferential direction of the steel shell, and the shell and the cover body of the steel shell are welded into a whole.

In order to ensure the welding quality, the requirement on the coaxiality of the rotation axis of the pressing block, the rotation axis of the fixing block and the central axis of the part to be welded is high. Consequently, when the supplied materials dimensional error of box hat is great or the diameter specification of box hat is different, need adjust the position of propping briquetting and fixed block, this accommodation process is comparatively loaded down with trivial details, wastes time and energy to the regulation degree of difficulty is great, can't satisfy the requirement of axiality, leads to welding quality relatively poor.

SUMMERY OF THE UTILITY MODEL

On the basis, the positions of the pressing block and the fixing block need to be adjusted when the size error of the supplied materials of the steel shell is large or the diameter specifications of the steel shell are different in the prior art, and the adjusting process is complicated, time-consuming and labor-consuming; the adjusting difficulty is high, the requirement of coaxiality cannot be met, and the problem of poor welding quality is caused.

A positioning mechanism, comprising:

the supporting assembly is used for supporting a part to be welded;

the first abutting component is provided with a spherical rolling part; and

the second abutting assembly is provided with an abutting head which is oppositely arranged with the spherical rolling part in a first direction, and the supporting assembly is positioned between the abutting head and the spherical rolling part;

the butting head and the spherical rolling part are used for clamping the part to be welded together along the first direction, and the butting head can rotate around a rotating axis parallel to the first direction so as to drive the spherical rolling part to roll through the part to be welded.

In one embodiment, the spherical rolling part is a universal ball.

In one embodiment, the second abutting assembly comprises a base, a transferring seat and a rotating shaft; the transfer seat is movably connected to the base along the first direction, the rotating shaft is rotatably connected to the transfer seat around the rotating axis, and the abutting head is mounted at one end, close to the supporting component, of the rotating shaft.

In one embodiment, the second abutting assembly further comprises an adjusting seat arranged on the transfer seat, the rotating shaft is rotatably connected to the adjusting seat around the rotating axis, and the position of the adjusting seat relative to the transfer seat in the second direction is adjustable;

wherein the second direction is perpendicular to the first direction.

In one embodiment, the adjusting seat is provided with a waist-shaped hole extending lengthwise along the second direction, and the second abutting assembly further comprises a locking member penetrating through the waist-shaped hole and in threaded connection with the transfer seat so as to lock the adjusting seat on the transfer seat.

In one embodiment, the second abutting assembly further comprises a knob member rotatably connected to the transfer base around a rotation axis and threadedly connected to the adjusting base;

wherein the axis of rotation is parallel to the second direction.

In one embodiment, one end of the abutting head facing the spherical rolling part is provided with an abutting surface and a chamfer, the abutting surface is used for abutting with the piece to be welded, and the chamfer is arranged around the abutting surface.

In one embodiment, the supporting assembly comprises a supporting frame and at least two supporting wheels rotatably connected to the supporting frame, the at least two supporting wheels are arranged at intervals along a second direction perpendicular to the first direction and are used for supporting the parts to be welded together.

In one embodiment, the support assembly further comprises a support column extending lengthwise in a third direction perpendicular to the first and second directions, and the support frame is disposed on the support column and adjustable in position in the lengthwise direction of the support column.

In one embodiment, the support frame is movably connected to the support column;

the supporting component further comprises a locking piece, wherein the locking piece is in threaded connection with the supporting frame, and the locking piece can be screwed to abut against or separate from the supporting column.

In one embodiment, the positioning mechanism further comprises a limiting component, the limiting component comprises a base, a mounting seat and a limiting wheel, the mounting seat is movably arranged on the base along a third direction perpendicular to the first direction, and the limiting wheel is rotatably connected to the mounting seat and is oppositely arranged with the supporting component in the third direction;

the mounting seat can move to a limiting position along the third direction, so that the limiting wheel limits the part to be welded in the third direction.

A welding device comprises a welding mechanism and the positioning mechanism, wherein the welding mechanism is used for welding the part to be welded clamped between the abutting head and the spherical rolling part.

When the positioning mechanism and the welding device are used actually, a to-be-welded part is supported on the supporting assembly, and the abutting head and the spherical rolling part are close to each other until the abutting head and the spherical rolling part clamp the to-be-welded part on the supporting assembly together. The butt joint head is controlled to rotate, so that the parts to be welded are driven to synchronously rotate. And in the process of rotating the to-be-welded part, the welding mechanism completes the welding of the to-be-welded part.

Thus, due to the mode that the spherical rolling part and the butt joint head are jointly abutted to the to-be-welded part, in the process that the butt joint head drives the to-be-welded part to rotate, the spherical rolling part can roll in a self-adaptive mode within a small range of the end face of the to-be-welded part, and even when the position of the spherical rolling part relative to the butt joint head and the to-be-welded part deviates, the butt joint head can drive the to-be-welded part to stably rotate around the axis of the butt joint head, and therefore accurate welding can be achieved. Therefore, when the size error of the incoming materials of the welded parts is large or the diameter specifications are different, the requirement on coaxiality is reduced, the relative positions of the spherical rolling part and the abutting joint do not need to be accurately adjusted, and the spherical rolling part and the abutting joint only need to be approximately aligned, so that the debugging difficulty is reduced, and the debugging time is saved; on the other hand, the requirement of axiality can be easily satisfied, and the welding quality is ensured to be better.

Drawings

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

fig. 2 is a plan view of the welding apparatus shown in fig. 1 (the welding mechanism is omitted).

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 orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and for 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 thus, 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 interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. 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 "under," "beneath," and "under" a second feature may be directly under or obliquely under the second 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.

Referring to fig. 1 and 2, an embodiment of the present invention provides a welding device, which includes a positioning mechanism and a welding mechanism 100. The positioning mechanism is used for positioning the part A to be welded and driving the part A to be welded to rotate. The welding mechanism 100 is used for welding a member to be welded a positioned on the positioning mechanism.

It should be noted that the member to be welded a may be a steel case of a cylindrical battery, and the steel case includes a case body and a case cover that covers an opening at one end of the case body. The welding mechanism 100 is used to weld the joint of the housing and the cover. Of course, in other embodiments, the part a to be welded may be other parts, and is not limited herein.

In an embodiment of the present invention, the positioning mechanism comprises a supporting component 10, a first abutting component 20 and a second abutting component 30. The support assembly 10 is used to support a part a to be welded. It can be understood that since the member to be welded a needs to rotate about its own axis at the time of welding, the member to be welded a supported on the support assembly 10 can rotate relative to the support assembly 10 by the external force. The support assembly 10 is located between the first abutment assembly 20 and the second abutment assembly 30, and the first abutment assembly 20, the support assembly 10 and the second abutment assembly 30 are arranged along the first direction X. A spherical rolling portion 21 is mounted on the first abutment member 20. The second abutment assembly 30 has an abutment head 34, the abutment head 34 being rotatable about an axis of rotation parallel to the first direction X.

The abutting head 34 and the spherical rolling part 21 are used for clamping a to-be-welded part a on the support assembly 10 together along the first direction X, so that the abutting head 34 can drive the to-be-welded part a to rotate synchronously when rotating around the rotation axis. When the abutting head 34 drives the member to be welded a to rotate, the spherical rolling portion 21 is driven to roll. It will be understood that, in a preferred embodiment, the axis of rotation of the abutment head 34 is collinear with the central axis of the piece a to be welded. Of course, in other embodiments, a certain eccentric error between the rotation axis of the abutment head 34 and the central axis of the to-be-welded part a may be allowed, as long as the welding conditions can be satisfied, and the present invention is not limited thereto.

In practical use of the welding device, the part a to be welded is supported on the support assembly 10, and the abutting head 34 and the spherical rolling part 21 are close to each other until the abutting head 34 and the spherical rolling part 21 clamp the part a to be welded on the support assembly 10 together. The abutting head 34 is controlled to rotate, so as to drive the welding part A to be welded to rotate synchronously. During the rotation of the to-be-welded article a, the welding mechanism 100 completes the welding of the to-be-welded article a.

Thus, due to the mode that the spherical rolling part 21 and the abutting head 34 jointly abut against the to-be-welded part A, in the process that the abutting head 34 drives the to-be-welded part A to rotate, the spherical rolling part 21 can perform self-adaptive rolling in a small range of the end face of the to-be-welded part A, and even if the position of the spherical rolling part 21 relative to the abutting head 34 and the to-be-welded part A deviates, the abutting head 34 can drive the to-be-welded part A to stably rotate around the axis of the abutting head A, so that accurate welding is performed. Therefore, when the size error of the supplied materials of the to-be-welded part A is large or the diameter specifications are different, the requirement of coaxiality is reduced, the relative positions of the spherical rolling part 21 and the abutting head 34 do not need to be accurately adjusted, and only the two parts need to be approximately aligned, so that the debugging difficulty is reduced, and the debugging time is saved; on the other hand, the requirement of axiality can be easily satisfied, and better welding quality is ensured. Preferably, the spherical rolling portion 21 may be a universal ball.

It should be noted that, in the actual welding process, since the welding position is relatively close to the abutment head 34, a phenomenon that the welding mechanism welds the abutment head 34 to the member to be welded a is likely to occur. In order to avoid this phenomenon, in one embodiment, the end of the abutment head 34 facing the spherical rolling portion 21 has an abutment surface 342 and a chamfer 341, the abutment surface 342 being intended to abut against the piece a to be welded, the chamfer 341 being laid around the abutment surface 342. In this manner, this chamfer 341 is provided so that, when the part a to be welded is clamped, the abutment surface 342 abutting the middle of the head 34 abuts against the part a to be welded, and the chamfer 341 abutting the peripheral edge of the head 34 is separated from the peripheral edge of the part a to be welded, thereby avoiding welding the abutment head 34 to the part a to be welded. Alternatively, the chamfer 341 may be a rounded corner or a chamfered corner, and is not limited herein.

In a specific embodiment, the first abutment assembly 20 comprises a fixed frame 22, and the spherical rolling part 21 is mounted on a side of the fixed frame 22 facing the support assembly 10. In this way, the abutment head 34 can move toward the spherical rolling portion 21 until the member to be welded a on the support assembly 10 is pressed against the spherical rolling portion 21, that is, the abutment head 34 and the spherical rolling portion 21 together clamp the member to be welded a.

In the embodiment of the present invention, the second abutting assembly 30 includes a base 31, a transferring seat 32 and a rotating shaft 33. The transfer base 32 is movably coupled to the base 31 along the first direction X. The rotary shaft 33 is rotatably connected to the transfer base 32 about the aforementioned rotation axis. An abutment head 34 is mounted on the end of the rotating shaft 33 near the support member 10. In this way, after the workpiece a is placed on the supporting assembly 10, the transfer seat 32 moves close to the first abutting assembly 20 along the first direction X until the abutting head 34 and the spherical rolling portion 21 clamp the workpiece a together. The rotation shaft 33 drives the abutting head 34 to rotate, so that the abutting head 34 drives the to-be-welded part a to rotate.

In particular, in the embodiment, the second abutment assembly 30 further comprises an adjustment seat 35 disposed on the transfer seat 32. The rotary shaft 33 is rotatably connected to the adjustment base 35 about the rotation axis, and the position of the adjustment base 35 in the second direction Y with respect to the transfer base 32 is adjustable. The second direction Y is perpendicular to the first direction X. In this way, the position of the abutment head 34 in the second direction Y can be adjusted by adjusting the position of the adjusting seat 35 relative to the transfer seat 32 in the second direction Y, so that the rotation axis of the abutment head 34 is collinear with (i.e. coaxial to) the central axis of the part a to be welded. Alternatively, the rotation shaft 33 is mounted on the adjustment seat 35 by a bearing, so that the rotation shaft 33 is rotatable relative to the adjustment seat 35.

Optionally, the adjusting seat 35 is provided with a waist-shaped hole 351 extending lengthwise along the second direction Y, and the second abutting assembly 30 further includes a locking member. The locking member is disposed through the waist-shaped hole 351 and is threadedly connected to the transferring seat 32, so as to lock the adjusting seat 35 on the transferring seat 32. Thus, when the position of the abutting head 34 in the second direction Y needs to be adjusted, the locking member is firstly loosened, and then the adjusting seat 35 is controlled to move relative to the carriage 32 along the second direction Y, so as to drive the abutting head 34 to move along the second direction Y. After the abutment head 34 is adjusted in position, the locking member is tightened to lock the adjustment seat 35 on the transfer seat 32.

Optionally, second abutment assembly 30 further includes a knob member 352. The knob member 352 is rotatably coupled to the transfer base 32 about a rotational axis and is screw-coupled to the adjustment base 35. Wherein the rotation axis is parallel to the second direction Y. Thus, when the position of the abutting head 34 in the second direction Y needs to be adjusted, the locking member is firstly loosened, and then the knob 352 is screwed, so as to drive the adjusting seat 35 to move along the second direction Y relative to the carriage 32, and further drive the abutting head 34 to move along the second direction Y. After the abutment head 34 is adjusted in position, the knob 352 is stopped and the locking member is tightened to lock the adjustment seat 35 to the transfer seat 32.

In particular embodiments, the second abutment assembly 30 further includes a mounting bracket 36 and a rotary drive 37. The mounting bracket 36 is provided on the transfer base 32 such that the mounting bracket 36 moves in the first direction X together with the transfer base 32. The rotary driving member 37 is mounted on the mounting bracket 36 and is connected to an end of the rotary shaft 33 away from the abutment head 34 in a driving manner, so as to drive the rotary shaft 33 to rotate, thereby driving the abutment head 34 on the rotary shaft 33 to rotate. Alternatively, the rotary drive 37 may be a motor, which may be coupled to the rotary shaft 33 by a coupling.

In one embodiment, after the position of the adjusting seat 35 in the second direction Y is adjusted, the mounting bracket 36 is assembled to the transfer seat 32, and the rotating shaft 33 is connected to the rotating drive member 37. Of course, in another embodiment, the mounting bracket 36 can be designed to move synchronously with the adjusting seat 35, so that the mounting bracket 36 can move along with the adjusting seat 35 while the position of the adjusting seat 35 in the second direction Y is adjusted, thereby avoiding that the mounting bracket 36 can be assembled only after the adjusting seat 35 is adjusted in place.

In an embodiment, the second abutting assembly 30 further includes a moving driving member 38, and the moving driving member 38 is installed on the base 31 and is in driving connection with the transferring seat 32 to drive the transferring seat 32 to move along the first direction X relative to the base 31. Alternatively, the movable driving member 38 may employ an air cylinder.

Optionally, the base 31 is provided with a slide rail 311 extending lengthwise along the first direction X. The transfer base 32 is provided with a slider 321 which is in sliding fit with the slide rail 311. In this way, the movement of the transfer base 32 in the first direction X with respect to the base 31 is guided by the movement of the slider 321 along the slide rail 311.

It should be noted that the positioning mechanism is not limited to the first abutment assembly 20 being fixed, and the second abutment assembly 30 approaches the first abutment assembly 20 along the first direction X to clamp the workpiece a to be welded. Of course, in another embodiment, the clamping of the weldment a can also be achieved in such a way that the first abutment assembly 20 moves closer to the second abutment assembly 30 along the first direction X, while the second abutment assembly 30 is stationary. In yet another embodiment, the clamping of the weldment a can also be achieved by moving both the first abutment assembly 20 and the second abutment assembly 30 closer to each other in the first direction, which is not limited herein.

In the embodiment of the present invention, the supporting assembly 10 includes a supporting frame 11 and at least two supporting wheels 12 rotatably connected to the supporting frame 11. The at least two support wheels 12 are arranged at intervals along a second direction Y perpendicular to the first direction X and are used for supporting a part a to be welded together. In this way, the at least two supporting wheels 12 are used to support the workpiece a together, and the workpiece a is allowed to rotate under the driving of the abutting head 34. It will be understood that the central axis of the part a to be welded and the central axis of each support wheel 12 are parallel, so that the part a to be welded can rotate on each support wheel 12.

In particular embodiments, the support assembly 10 further includes a support column 13 extending lengthwise in a third direction Z perpendicular to the first direction X and the second direction Y. The support frame 11 is provided on the support column 13, and is adjustable in position in the lengthwise direction of the support column 13. In this way, the position of the to-be-welded article a supported on each support wheel 12 in the third direction Z can be adjusted by adjusting the position of the support frame 11 relative to the support column 13, that is, the position of each support wheel 12 on the support frame 11 in the third direction Z, so that the central axis of the to-be-welded article a is collinear with the rotation axis of the abutment head 34.

Optionally, the supporting frame 11 is movably connected to the supporting column 13, for example, a through hole is formed in the supporting frame 11, and the supporting column 13 is inserted into the through hole, so that the supporting frame 11 can move along the supporting column 13. The support assembly 10 also includes a fastener that is threadably attached to the support bracket 11 and that can be driven into and out of abutment with the support post 13. Thus, when it is desired to adjust the position of the support bracket 11, the fastener is driven until the fastener is disengaged from the support post 13, at which time the support bracket 11 is movable along the support post 13. When the position of the support frame 11 is adjusted to the proper position, the fastener is screwed in the reverse direction until the fastener abuts against the support column 13, so that the support frame 11 is prevented from moving along the support column 13, namely, the position of the support frame 11 relative to the support column 13 is fixed. It will be appreciated that the fastener may employ a jackscrew.

It should be noted that the number of the supporting members 10 may be plural (i.e., two or more). The plurality of supporting assemblies 10 are arranged at intervals along the first direction X to support the parts a to be welded together, so that the parts a to be welded are supported more stably.

The embodiment of the utility model provides an in, positioning mechanism still includes spacing subassembly 40, and this spacing subassembly 40 includes base 41, mount pad 42 and spacing wheel 43. The mount 42 is movably provided on the base 41 in the third direction Z. The limiting wheel 43 is rotatably connected to the mounting seat 42 and is disposed opposite to the supporting component 10 in the third direction Z, so that the limiting wheel 43 can be driven by the mounting seat 42 to approach or leave the to-be-welded component a on the supporting component 10 along the third direction Z.

The mount 42 is movable in the third direction Z to a defined position. When the mounting seat 42 moves to the limiting position, the limiting wheel 43 limits the part a to be welded on the support assembly 10 in the third direction Z, so as to avoid the part a to be welded jumping in the third direction Z when the part a to be welded rotates and is welded. In this way, before the welding of the to-be-welded part a, the mounting seat 42 may be controlled to move to the limiting position, so as to limit the to-be-welded part a in the third direction Z by using the limiting wheel 43, i.e., limit the to-be-welded part a between the limiting wheel 43 and the supporting wheel 12, so as to prevent the to-be-welded part a from jumping in the third direction Z. Also, when the limiting wheel 43 limits the to-be-welded part a, since the limiting wheel 43 and each support wheel 12 are rotatable, the to-be-welded part a is allowed to rotate following the abutment head 34.

It should be noted that, when the mounting seat 42 moves to the limited position (i.e. when the limiting wheel 43 is used to limit the to-be-welded part a), the limiting wheel 43 just contacts or has a small gap with the to-be-welded part a on the supporting assembly 10, as long as the function of limiting the to-be-welded part a in the third direction can be achieved, and the limitation is not limited herein.

In the actual welding work, first, the members to be welded a are supported on the respective support wheels 12. Then, the rotary drive member 37 drives the rotary shaft 33 to move toward the spherical rolling portion 21 until the abutment head 34 clamps the members a to be welded on the respective support wheels 12 together with the spherical rolling portion 21. Then, the mounting seat 42 is controlled to drive the limiting wheel 43 to move towards the supporting assembly 10 along the third direction Z until the mounting seat 42 reaches the limiting position, so that the limiting wheel 43 and the supporting assembly 10 limit the to-be-welded part a between the to-be-welded part a and the limiting wheel, that is, the to-be-welded part a is limited in the third direction Z. Then, the rotary driving member 37 drives the rotary shaft 33 to rotate, so that the abutting head 34 drives the to-be-welded part a to rotate, and the welding mechanism 100 welds the to-be-welded part a. After the welding mechanism 100 finishes welding, the rotation shaft 33 stops rotating, and the transfer base 32 moves away from the spherical rolling portion 21 in the first direction X, so that the abutment head 34 and the spherical rolling portion 21 release the pressing of the workpiece a to be welded. The mounting seat 42 drives the limiting wheel 43 to move away from the support assembly 10, so that the limiting wheel 43 is away from the member to be welded a on the support assembly 10. At this time, the welded member a to be welded may be blanked.

In particular embodiments, the stop assembly 40 further includes a push-down driver 44, the push-down driver 44 being mounted on the base 41, and the mounting base 42 being mounted at a driving end of the push-down driver 44. The pressing driving member 44 is used for driving the mounting seat 42 to move along the third direction Z, so as to drive the limiting wheel 43 on the mounting seat 42 to move along the third direction Z. Alternatively, the push-down driver 44 may employ an air cylinder.

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 (10)

1. A positioning mechanism, comprising:

the supporting assembly is used for supporting a part to be welded;

the first abutting component is provided with a spherical rolling part; and

the second abutting component is provided with an abutting head which is oppositely arranged with the spherical rolling part in a first direction, and the supporting component is positioned between the abutting head and the spherical rolling part;

the abutting joint head and the spherical rolling part are used for clamping the part to be welded together along the first direction, the abutting joint head can rotate around a rotating axis parallel to the first direction, and the part to be welded drives the spherical rolling part to roll.

2. The positioning mechanism of claim 1, wherein the spherical rolling portion is a gimbaled ball.

3. The positioning mechanism as set forth in claim 1, wherein said second abutting assembly includes a base, a transfer base and a rotary shaft; the transfer seat is movably connected to the base along the first direction, the rotating shaft is rotatably connected to the transfer seat around the rotating axis, and the abutting head is mounted at one end, close to the supporting component, of the rotating shaft.

4. The positioning mechanism as set forth in claim 3 wherein said second abutment assembly further comprises an adjustment seat disposed on said carriage, said rotary shaft being rotatably connected to said adjustment seat about said axis of rotation, said adjustment seat being adjustable in position in a second direction relative to said carriage;

wherein the second direction is perpendicular to the first direction.

5. A positioning mechanism as set forth in claim 1, characterized in that the end of the abutment head facing the spherical rolling portion has an abutment surface for abutment with the piece to be welded and a chamfer running around the abutment surface.

6. The positioning mechanism as set forth in claim 1 wherein said support assembly includes a support frame and at least two support wheels rotatably connected to said support frame, said at least two support wheels being spaced apart in a second direction perpendicular to said first direction and being adapted to collectively support said work piece to be welded.

7. The positioning mechanism according to claim 6, wherein the support assembly further comprises a support column extending lengthwise in a third direction, the support frame being disposed on the support column and adjustable in position in the lengthwise direction of the support column;

the third direction is perpendicular to the first and second directions.

8. The positioning mechanism of claim 7 wherein the support bracket is movably attached to the support post;

the supporting component further comprises a locking piece, wherein the locking piece is in threaded connection with the supporting frame, and the locking piece can be screwed to abut against or separate from the supporting column.

9. The positioning mechanism according to claim 1, further comprising a limiting component, wherein the limiting component comprises a base, a mounting seat and a limiting wheel, the mounting seat is movably arranged on the base along a third direction perpendicular to the first direction, and the limiting wheel is rotatably connected to the mounting seat and is oppositely arranged with the supporting component in the third direction;

the mounting seat can move to a limiting position along the third direction, so that the limiting wheel limits the part to be welded in the third direction.

10. A welding apparatus comprising a welding mechanism for welding the member to be welded clamped between the abutment head and the spherical rolling portion, and a positioning mechanism as claimed in any one of claims 1 to 9.

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