Pressing structure, quick-change assembly, pressing device and welding equipment

Abstract

The utility model relates to a pressing structure, a quick-change assembly, a pressing device and welding equipment. The pressing structure comprises a pressing piece, the pressing piece is used for abutting against a to-be-welded piece, the pressing piece is provided with a welding channel allowing laser to pass through and a shielding gas channel allowing shielding gas to flow through, and the shielding gas channel is provided with annular or polygonal gas outlets formed in the circumferential direction of the laser channel. By means of the arrangement mode, when the pressing piece abuts against the to-be-welded piece, the shielding gas can be evenly blown out to the welding position of the to-be-welded piece, and the problem that in the related technology, the blown shielding gas is not evenly distributed is solved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of battery manufacturing, and in particular to a clamping structure, a quick-change assembly, a clamping device and welding equipment. Background Art

[0002] The battery welding equipment laser welds the battery cell poles and the connecting pieces one by one, thus achieving electrical connection between the battery cells in the battery. Before welding the connecting piece to the battery cell pole, it is usually necessary to use a clamping structure to press the connecting piece against the battery cell pole, and then perform the corresponding welding operation through the welding channel opened on the clamping structure. To further ensure the welding effect, the welding position is usually blown with protective gas.

[0003] However, in the related art, when the shielding gas is blown, the shielding gas is unevenly distributed, so that the shielding gas has a poor protective effect on battery welding. Utility Model Content

[0004] The purpose of the present disclosure is to provide a clamping structure, a quick-change assembly, a clamping device and a welding device to improve the rationality of the structural distribution of the welding channel and the shielding gas channel in the clamping structure, and enable the shielding gas channel to blow out a more uniform shielding gas, so as to at least partially solve the related technical problems.

[0005] In order to achieve the above-mentioned purpose, according to the first aspect of the present disclosure, a clamping structure is provided. The clamping structure comprises a clamping member, the clamping member is used to press against the workpiece to be welded, the clamping member has a welding channel for laser to pass through and a shielding gas channel for shielding gas to flow, and the shielding gas channel has an annular or polygonal gas outlet arranged circumferentially around the welding channel.

[0006] Optionally, the clamping member includes a first clamping body and a second clamping body sleeved on the outside of the first clamping body, the shielding gas channel and the air outlet are formed between the first clamping body and the second clamping body, the welding channel is formed in the first clamping body, and the air inlet of the shielding gas channel is formed in the second clamping body.

[0007] Optionally, the first end of the first clamping body has a laser outlet connected to the welding channel, the first end of the second clamping body has an opening, the gas outlet is formed between the opening of the second clamping body and the first end of the first clamping body, and the first end of the second clamping body extends beyond the first end of the first clamping body to press against the workpiece to be welded, so that the laser passing through the laser outlet and the shielding gas passing through the gas outlet share the opening.

[0008] Optionally, the shielding gas channel has a first conical surface formed on the first clamping body and a second conical surface formed on the second clamping body, the generatrix of the first conical surface and the second conical surface are inclined and extend toward the side where the opening is located and toward the side where the center line of the welding channel is located, and the taper of the second conical surface is greater than the taper of the first conical surface.

[0009] Optionally, an outwardly protruding stop portion is provided on the outer wall of the first pressing body, and an end of the second pressing body facing away from the opening is stopped at the stop portion.

[0010] Optionally, a dust removal channel connected to the welding channel is formed in the stopper.

[0011] Optionally, an elastic component is provided on the side of the stopper away from the second clamping body, the elastic component includes a connecting member and an elastic member, the connecting member is used to be connected to the quick-change plate, and the elastic member is used to be located between the stopper and the quick-change plate.

[0012] According to a second aspect of the present disclosure, a quick-change assembly is provided, which includes a quick-change plate and the multiple clamping structures described above, wherein the multiple clamping structures are arranged on the same side of the quick-change plate.

[0013] According to a third aspect of the present disclosure, a clamping device is provided, which includes a mounting plate and the quick-change assembly described above, wherein the quick-change plate is detachably connected to the mounting plate.

[0014] Optionally, the quick-change assembly further comprises a positioning portion provided on the quick-change plate, the clamping device comprises a chuck provided on the mounting plate, and the positioning portion is unlockably connected to the chuck.

[0015] Optionally, the mounting plate is provided with a first through hole for connecting to a protective gas storage device, and the quick-change plate is provided with a second through hole connected to the protective gas channel, and the first through hole and the second through hole can be docked and connected.

[0016] Optionally, the first through hole is connected to a first quick connector, which is used to connect to the protective gas storage device through a first pipeline, the second through hole is connected to a second quick connector, the air inlet of the protective gas channel is connected to a third quick connector, and the second quick connector and the third quick connector are connected through a second pipeline.

[0017] Optionally, a third through hole is provided on the quick-change plate, and the third through hole is connected to the dust removal channel connected to the welding channel. A fourth through hole is provided on the mounting plate for connecting to the dust collecting device, and the third through hole and the fourth through hole can be docked and connected.

[0018] Optionally, the dust removal port of the dust removal channel is connected to a fourth quick connector, the third through hole is connected to a fifth quick connector, and the fourth quick connector and the fifth quick connector are connected through a third pipeline.

[0019] Optionally, a dust removal cover is provided on the side of the mounting plate facing away from the quick-change plate, a flow channel space is enclosed between the dust removal cover and the mounting plate, the fourth through hole is connected to the flow channel space, a dust removal pipe connected to the flow channel space is provided on the dust removal cover, and the dust removal pipe is used to connect to a dust collecting device.

[0020] Optionally, the clamping device also includes a distance measuring device arranged on the side of the mounting plate away from the quick-change plate, the distance measuring device includes a distance meter and a driving member, the driving member is used to drive the distance meter to move, the mounting plate has a laser port connected to the welding channel, and the distance meter is used to measure the distance between the clamping structure and the workpiece to be welded through the laser port and the welding channel.

[0021] According to a fourth aspect of the present disclosure, a welding device is provided, which includes a transfer device and the above-mentioned pressing device, wherein the transfer device is connected to the pressing device and is used to drive the pressing device to press the workpiece to be welded.

[0022] The above technical solution, that is, the clamping structure, includes a clamping piece. The clamping piece has a welding channel for the laser to pass through and a shielding gas channel for the shielding gas to flow. When in use, the clamping piece is used to press against the workpiece to be welded. On the one hand, the welding operation can be achieved through the welding channel, and on the other hand, the shielding gas channel can be used to blow shielding gas to the welding position of the workpiece to be welded. Among them, the shielding gas channel has an annular or polygonal air outlet arranged circumferentially around the welding channel. Such an arrangement enables the clamping piece to evenly blow shielding gas to the welding position of the workpiece to be welded when it is pressed against the workpiece to be welded, thereby avoiding the problem of uneven distribution of the shielding gas blown out in the related art.

[0023] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0025] Figure 1 is a schematic diagram of the three-dimensional structure of a clamping device provided according to an embodiment of the present disclosure;

[0026] Figure 2is a front structural schematic diagram of a clamping device provided according to an embodiment of the present disclosure;

[0027] Figure 3 is a schematic diagram of the back structure of a pressing device provided according to an embodiment of the present disclosure;

[0028] Figure 4 is a structural schematic diagram of a compression structure provided according to an embodiment of the present disclosure;

[0029] Figure 5 yes Figure 4 Cross-sectional view at CC.

[0030] Description of Reference Numerals

[0031] 100, clamping structure; 11, clamping member; 111, welding channel; 112, protective gas channel; 112a, air outlet; 112b, air inlet; 113, first clamping body; 113a, laser outlet; 113b, first cone surface; 113c, stopper; 114, second clamping body; 114a, opening; 114b, second cone surface; 115, dust removal channel; 12, elastic component; 121, connecting member; 1 22. Elastic part; 200. Quick-change assembly; 21. Quick-change plate; 211. Positioning part; 300. Clamping device; 31. Mounting plate; 311. Laser port; 32. Chuck; 33. First quick connector; 34. Second quick connector; 35. Third quick connector; 36. Fourth quick connector; 37. Fifth quick connector; 38. Dust removal cover; 39. Dust removal pipe; 400. Distance measuring device; 41. Distance finder; 42. Driving part. DETAILED DESCRIPTION

[0032] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0033] In the present disclosure, unless otherwise stated, the directional words used, such as "inside" and "outside", refer to the outline of the corresponding parts themselves. In addition, the terms "first" and "second" used in the present disclosure are to distinguish one element from another element and do not have order and importance. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0034] According to the first aspect of the present disclosure, Figure 4 and Figure 5As shown, a clamping structure 100 is provided. The clamping structure 100 may include a clamping piece 11. The clamping piece 11 is used to press against the workpiece to be welded. For example, the workpiece to be welded here may be a connecting piece, so that the connecting piece is pressed against the battery cell pole. Of course, the workpiece to be welded may also be other components. The workpiece to be welded here may include a single component or multiple components. This is not limited here, and those skilled in the art may make adjustments according to actual needs. The clamping piece 11 has a welding channel 111 for the laser to pass through and a shielding gas channel 112 for the shielding gas to flow. The shielding gas channel 112 has an annular or polygonal air outlet 112a arranged circumferentially around the welding channel 111. This arrangement enables the clamping piece 11 to evenly blow out shielding gas to the welding position of the workpiece to be welded when it is pressed against the workpiece to be welded, thereby avoiding the problem of uneven distribution of the shielding gas blown out in the related art.

[0035] In some embodiments, Figure 5 As shown, the clamping member 11 may include a first clamping body 113 and a second clamping body 114 sleeved on the outside of the first clamping body 113. A protective gas channel 112 and an air outlet 112a are formed between the first clamping body 113 and the second clamping body 114. The welding channel 111 is formed in the first clamping body 113. The air inlet 112b of the protective gas channel 112 is formed in the second clamping body 114. The clamping member 11 reduces the difficulty of the manufacturing process of the protective gas channel 112 by forming the first clamping body 113 and the second clamping body 114 in a split manner. Furthermore, the split setting also facilitates the replacement and maintenance of the first clamping body 113 and the second clamping body 114. When any one of the first clamping body 113 and the second clamping body 114 is damaged, it can be repaired and replaced separately. Such a formation method also reduces the maintenance cost of the clamping structure 100 to a certain extent. Of course, it is understandable that the clamping piece 11 can also be an integrated structure. Correspondingly, the protective gas channel 112 can be formed inside the clamping piece 11 by etching, drilling, casting, etc., which is not limited here, and technical personnel in this field can design it according to actual needs.

[0036] In some embodiments, Figure 5As shown, the first end of the first clamping body 113 has a laser outlet 113a connected to the welding channel 111. The first end of the second clamping body 114 has an opening 114a. An air outlet 112a is formed between the opening 114a of the second clamping body 114 and the first end of the first clamping body 113. The first end of the second clamping body 114 extends beyond the first end of the first clamping body 113 to press against the workpiece to be welded, and the laser passing through the laser outlet 113a and the shielding gas passing through the air outlet 112a share the opening 114a. Such a setting enables the shielding gas to gather at the welding position of the workpiece to be welded when the first end of the second clamping body 114 is pressed against the workpiece to be welded, thereby further improving the use effect of the shielding gas.

[0037] In some embodiments, Figure 5 As shown, the shielding gas channel 112 has a first conical surface 113b formed on the first clamping body 113 and a second conical surface 114b formed on the second clamping body 114. The generatrix of the first conical surface 113b and the second conical surface 114b are inclined and extend toward the side where the opening 114a is located and toward the side where the center line of the welding channel 111 is located. The taper of the second conical surface 114b is greater than the taper of the first conical surface 113b. Such a setting method can gradually reduce the caliber of the shielding gas channel 112, and then can make the shielding gas flowing through the shielding gas channel 112 have a certain flow rate at the outlet 112a, so as to form a good protective effect on the welding position of the welded part. Of course, it is understandable that the taper of the first conical surface 113b and the taper of the second conical surface 114b can also be the same to form a shielding gas channel 112 with the same caliber, which is not limited here, and those skilled in the art can design it according to actual needs.

[0038] In some embodiments, Figure 5 As shown, a convex stopper 113c is provided on the outer wall of the first clamping body 113, and one end of the second clamping body 114 facing away from the opening 114a stops at the stopper 113c. In this way, when the first end of the second clamping body 14 presses against the connecting piece, the force can be transferred to the stopper 113c, thereby avoiding the problem of misalignment between the second clamping body 14 and the first clamping body 13 due to the pressing during the pressing process, thereby improving the stability of welding. In addition, the provision of the stopper 113c can facilitate the connection between the first clamping body 113 and the second clamping body 114. Optionally, the first clamping body 113 can be connected by welding, bolt connection, etc., which is not limited here, and those skilled in the art can design according to actual needs.

[0039] In some embodiments, the compression structure 100 may further include a dust removal channel 115 connected to the welding channel 111 , so as to achieve the purpose of dust removal through the dust removal channel 115 .

[0040] The dust removal channel 115 can be formed in any suitable manner. For example, the dust removal channel 115 can be formed in the stopper 113c, so as to form the dust removal channel 115 by utilizing the convex structure formed by the stopper 113c, so as to facilitate connection of, for example, a quick connector at the dust removal port of the dust removal channel 115. In addition, the provision of the dust removal channel 115 enables the compression structure 100 to not only realize the operation of blowing out the shielding gas by utilizing the shielding gas channel 112 when welding through the welding channel 111, but also realize the dust removal operation, further improving the reliability of the compression structure 100 when in use, thereby also improving the welding effect.

[0041] In some embodiments, Figure 5 As shown, an elastic component 12 may be provided on the side of the stopper 113c that faces away from the second clamping body 114. The elastic component 12 includes a connector 121 and an elastic component 122. The connector 121 is used to be connected to the quick-change plate 21. The elastic component 122 is used to be located between the stopper 113c and the quick-change plate 21. For example, the elastic component 122 may be a spring, an elastic tube, etc., which is not limited here, and those skilled in the art may adjust and select according to actual needs. The connector 121 may be an equal-height screw, a snap, etc., which is not limited here, and those skilled in the art may adjust and select according to actual needs. The provision of the elastic component 12 allows the clamping structure 100 to avoid a rigid impact between the clamping structure 100 and the workpiece to be welded when it is pressed against the workpiece to be welded, so that the clamping structure 100 and the workpiece to be welded can have a certain buffering force when pressed, thereby avoiding damage to the workpiece to be welded by the clamping structure 100. In addition, the elastic component 122 utilizes the stopper portion 113c to provide a more stable and uniform buffering force for the compression structure.

[0042] According to a second aspect of the present disclosure, Figure 1 As shown, a quick-change assembly 200 is provided. The quick-change assembly 200 may include a quick-change plate 21 and the above-mentioned multiple clamping structures 100. The multiple clamping structures 100 are arranged on the same side of the quick-change plate 21. In this embodiment, the multiple clamping structures 100 can simultaneously achieve the purpose of pressing multiple parts to be welded, effectively improving the clamping efficiency of the parts to be welded before welding, and ultimately effectively improving the welding efficiency of the parts to be welded.

[0043] According to the third aspect of the present disclosure, Figure 1 , Figure 2 and Figure 3As shown, a clamping device 300 is provided. The clamping device 300 may include a mounting plate 31 and the quick-change assembly 200 mentioned above. The quick-change plate 21 is detachably connected to the mounting plate 31. In this embodiment, when the clamping structure 100 on the quick-change plate 21 is damaged, contaminated, etc. and needs to be replaced, the quick-change plate 21 can be directly separated from the mounting plate 31, so that the next step of maintenance, cleaning, etc. of the damaged and contaminated clamping structure 100 can be achieved. At the same time, a new quick-change plate 21 can be replaced on the mounting plate 31 to continue the clamping work. In this embodiment, the quick-change assembly 200 is used as a separate replacement element and is detachably connected to the mounting plate 31, so that the clamping structure 100 can be quickly replaced, inspected, and cleaned, which to a certain extent avoids the problem of slow replacement efficiency caused by the need to stop the machine to replace the clamping structure 100 in the related technology.

[0044] In some embodiments, Figure 2 and Figure 3 As shown, the quick-change assembly 200 may also include a positioning portion 211 disposed on the quick-change plate 21. The clamping device 300 includes a chuck 32 disposed on the mounting plate 31. The positioning portion 211 is unlockably connected to the chuck 32. For example, the positioning portion 211 on the quick-change plate 21 may be constructed as a positioning pin, which can be unlockably connected to the chuck 32. The chuck 32 may be, for example, an origin chuck. For the sake of brevity, the working principle of the chuck 32 will not be described here. The present disclosure adopts the method of a chuck 32 and a positioning pin to achieve a detachable connection between the quick-change plate 21 and the mounting plate 31, mainly by utilizing the advantages of the chuck 32 in this form, such as easy installation and reliable use. Of course, the quick-change plate 21 and the mounting plate 31 may also be detachably connected by other means, such as magnetic attraction, snap-on, etc., which are not limited here, and those skilled in the art may design according to actual needs.

[0045] In some embodiments, the mounting plate 31 is provided with a first through hole (not shown in the figure) for connecting to the protective gas storage device. The quick-change plate 21 is provided with a second through hole (not shown in the figure) connected to the protective gas channel 112, and the first through hole and the second through hole can be docked and connected. The second through hole provided on the quick-change plate 21 enables the quick-change assembly 200 to be used as a separate replacement element to achieve the purpose of quick replacement with the mounting plate 31. For example, when replacing the quick-change assembly 200, it can not only achieve the replacement of multiple clamping structures 100 on the quick-change plate 21, but also the connection between the quick-change plate 21 and the protective gas storage device can be easily replaced through the docking connection between the first through hole and the second through hole. Such a setting method ensures that each quick-change plate 21 can be adapted to the mounting plate 31 and that the protective gas channel 112 in the clamping structure 100 on the quick-change plate 21 can have a stable source of protective gas.

[0046] In some embodiments, Figure 2 and Figure 3 As shown, the first through hole is connected to a first quick connector 33. The first quick connector 33 is used to connect to the protective gas storage device through a first pipeline (not shown in the figure). The second through hole is connected to a second quick connector 34. The air inlet 112b of the protective gas channel 112 is connected to a third quick connector 35. The second quick connector 34 and the third quick connector 35 are connected through a second pipeline (not shown in the figure). The use of quick connectors facilitates rapid assembly of various gas connection points. In addition, such an arrangement enables the quick change plate 21 and the mounting plate 31 to form a contact seal between the first through hole and the second through hole through the first quick connector 33 and the second quick connector 34 after the connection. Of course, it is also possible that the first through hole and the second through hole can also be directly contact-sealed, for example, a sealing ring is arranged around the first through hole and the second through hole, so that the protective gas in the protective gas storage device can be reliably transported to the protective gas channel 112 of the clamping structure 100.

[0047] In some embodiments, Figure 2 and Figure 3 As shown, a third through hole (not shown in the figure) is provided on the quick-change plate 21. The third through hole is connected to the dust removal channel 115 connected to the welding channel 111. A fourth through hole (not shown in the figure) for connecting to the dust collecting device is provided on the mounting plate 31. The third through hole and the fourth through hole can be docked and connected. The third through hole provided on the quick-change plate 21 enables the quick-change assembly 200 to be used as a separate replacement element to achieve the purpose of quick replacement with the mounting plate 31. When the quick-change plate 21 is replaced, not only can the multiple clamping structures 100 on the quick-change plate 21 be replaced, but at the same time, the connection between the quick-change plate 21 and the dust collecting device can also be easily replaced through the docking connection between the third through hole and the fourth through hole. Such a setting method ensures that each quick-change plate 21 can be adapted to the mounting plate 31 and that the dust removal channel 115 in the clamping structure 100 on the quick-change plate 21 can have a stable source of dust removal gas. The third through hole and the fourth through hole can be directly connected to each other to achieve the purpose of rapid replacement and assembly. In addition, sealing rings can be arranged around the third through hole and the fourth through hole to enhance air tightness.

[0048] In some embodiments, Figure 2 and Figure 3As shown, the dust removal port of the dust removal channel 115 is connected to the fourth quick connector 36. The third through hole is connected to the fifth quick connector 37. The fourth quick connector 36 and the fifth quick connector 37 are connected through a third pipeline (not shown in the figure). The arrangement of the third quick connector 35 and the fourth quick connector 36 enables the quick-change assembly 200 to be assembled quickly, and enables the dust removal channel 115 to be reliably connected to the dust collection device when the quick-change plate 21 is installed on the mounting plate 31, thereby enabling the dust removal channel 115 to effectively form a negative pressure environment through the dust collection device to achieve the purpose of collecting pollutants during the welding process.

[0049] In some embodiments, Figure 1 , Figure 2 and Figure 3 As shown, a dust removal cover 38 is provided on the side of the mounting plate 31 facing away from the quick-change plate 21. A flow channel space is enclosed between the dust removal cover 38 and the mounting plate 31. The fourth through hole is connected to the flow channel space. A dust removal pipe 39 connected to the flow channel space is provided on the dust removal cover 38. The dust removal pipe 39 is used to be connected to a dust collecting device. For example, the dust collecting device may be a dust collecting box and a fan, etc. For example, the fan provides suction force for dust collection so as to store the smoke, impurities, etc. generated by welding in the dust collecting box. In this embodiment, the connection between the fourth through hole on the mounting plate 31 and the dust collecting device is achieved by the dust removal cover 38 and the dust removal pipe 39. Such a connection method is convenient and reliable and can simplify the structure and reduce costs.

[0050] In some embodiments, Figure 3As shown, the clamping device 300 may also include a distance measuring device 400 disposed on the side of the mounting plate 31 away from the quick-change plate 21. The distance measuring device 400 may include a distance meter 41 and a driving member 42. The driving member 42 is used to drive the distance meter 41 to move. For example, the driving member 42 may be a slide cylinder. The slide cylinder is used as the driving member 42 of the distance meter 41 here, mainly taking advantage of its high precision, space saving, high strength and the like. Of course, the driving member 42 may also be selected from other suitable devices, which are not limited here, and those skilled in the art may adjust according to actual needs. The mounting plate 31 has a laser port 311 connected to the welding channel 111. The distance meter 41 is used to measure the distance between the clamping structure 100 and the workpiece to be welded through the laser port 311 and the welding channel 111. For example, the distance meter 41 may be a laser distance meter or an infrared distance meter. The provision of the distance measuring device 400 in this embodiment further improves the reliability and accuracy of the use of the clamping device 300. Before welding, the rangefinder 41 can be driven by the driving member 42 to reach the laser port 311 and measure the distance through the welding channel 111, so that the clamping structure 100 maintains a set distance from the workpiece to be welded, thereby avoiding the problem of the clamping structure 100 being too close to the workpiece to be welded and causing pressure damage to the workpiece to be welded, and also avoiding the problem of the clamping structure 100 being too far away from the workpiece to be welded and causing pressure failure to the workpiece to be welded.

[0051] In addition, the driving member 42 may also include a bracket, for example, Figure 3For example, the bracket can be connected to the driving member 42, and the driving member 42 can drive the bracket to move back and forth along the up and down direction of the drawing, and the rangefinder 41 can be movably connected to the bracket along the left and right direction of the drawing. In this way, it can be used to measure the distance between different clamping structures 100 and the parts to be welded. In addition, it is also possible that the number of rangefinders 41 can be multiple, so as to simultaneously measure the distance between multiple clamping structures 100 and the corresponding parts to be welded. For example, the number of rangefinders 41 can be two, and the data measured by the two rangefinders 41 can also be compared and analyzed, for example, it can be determined whether the placement of the mounting plate 31 or the quick-change plate 21 or the battery module is tilted, etc., or the average value of each measurement data can also be obtained to prevent problems such as overpressure or pressure failure. In addition, it is also possible that the rangefinder 41 can also be adjustably connected to the bracket along, for example, the up and down direction in the figure, so that the positional relationship between each rangefinder 41 can be fine-tuned. For example, when two adjacent clamping structures 100 are misaligned in the up and down direction, the positions of the two rangefinders 41 can be fine-tuned so that the distance between the two clamping structures 100 and the parts to be welded can be measured at the same time. The present disclosure does not limit the specific connection method of the rangefinder 41 to be movably connected to the bracket. It can be connected in any suitable manner, for example, it can be connected by sliding fit of a slide rail or a slider, and can be locked by means such as threaded fasteners, or it can also be achieved by optional plug-in fit between a positioning column and a plurality of positioning holes. The present disclosure is not limited to this.

[0052] According to the fourth aspect of the present disclosure, a welding device is provided. The welding device may include a transfer device and the above-mentioned clamping device 300. The transfer device is connected to the clamping device 300, and is used to drive the clamping device 300 to clamp the workpiece to be welded. For example, the transfer device may include a transfer track, and the clamping device 300 is connected to the transfer track, and the transfer track can drive the clamping device 300 to move back and forth along the preset track of the transfer track to achieve the purpose of pressing the workpiece to be welded. Among them, the transfer track may include, for example, an X-direction track, a Y-direction track and a Z-direction track, the Y-direction track is movably connected to the X-direction track to achieve movement in the X direction, the Z-direction track is movably connected to the Y-direction track to achieve movement in the Y direction, and the clamping device 300 is movably connected to the Z-direction track to achieve the Z-direction track, thereby achieving the movement of the clamping device 300 in three-dimensional space. Of course, it is also possible that the transfer device can adopt, for example, a multi-axis manipulator. The present disclosure is not limited to this.

[0053] In some embodiments, the welding equipment may further include a quick-change device. The quick-change device may be used to receive the quick-change plate 21 detached from the mounting plate 31 of the clamping device 300, and collect the detached quick-change plate 21 to a set position for inspection and cleaning. The quick-change device may use, for example, a clamping mechanism that moves along a preset track to clamp the quick-change plate 21 through the clamping mechanism, or the quick-change device may also use a multi-axis manipulator. The present disclosure is not limited thereto.

[0054] In some embodiments, the welding equipment may further include a conveying device for conveying, for example, a battery pack and a connecting piece, and a welding device for welding the parts to be welded. For example, the conveying device may be a belt conveyor, a chain conveyor, etc., and the welding device may be a galvanometer welding machine, etc., which are not limited here, and those skilled in the art may select according to actual needs.

[0055] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0056] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0057] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A compression structure, characterized in that: The pressing member comprises a pressing member, the pressing member is used to press against the workpiece to be welded, the pressing member has a welding channel for the laser to pass through and a shielding gas channel for the shielding gas to flow, the shielding gas channel has an annular or polygonal gas outlet arranged circumferentially around the welding channel; The clamping member includes a first clamping body and a second clamping body sleeved on the outside of the first clamping body, the shielding gas channel and the air outlet are formed between the first clamping body and the second clamping body, the welding channel is formed in the first clamping body, and the air inlet of the shielding gas channel is formed in the second clamping body.

2. The compression structure according to claim 1, characterized in that: The first end of the first clamping body has a laser outlet connected to the welding channel, the first end of the second clamping body has an opening, the gas outlet is formed between the opening of the second clamping body and the first end of the first clamping body, and the first end of the second clamping body extends beyond the first end of the first clamping body to press against the workpiece to be welded, so that the laser passing through the laser outlet and the shielding gas passing through the gas outlet share the opening.

3. The compression structure according to claim 2, characterized in that: The shielding gas channel has a first conical surface formed on the first clamping body and a second conical surface formed on the second clamping body, the generatrix of the first conical surface and the second conical surface are both inclined and extended toward the side where the opening is located and toward the side where the center line of the welding channel is located, and the taper of the second conical surface is greater than the taper of the first conical surface.

4. The compression structure according to claim 2, characterized in that: An outwardly protruding stopper is provided on the outer wall of the first pressing body, and an end of the second pressing body facing away from the opening is stopped at the stopper.

5. The pressing structure according to claim 4, characterized in that: A dust removal channel communicating with the welding channel is formed in the stopper.

6. The pressing structure according to claim 4, characterized in that: An elastic component is arranged on the side of the stopper away from the second clamping body. The elastic component includes a connecting member and an elastic member. The connecting member is used to be connected to the quick-change plate, and the elastic member is used to be located between the stopper and the quick-change plate.

7. A quick-change assembly, characterized in that: It comprises a quick-change plate and a plurality of clamping structures as claimed in any one of claims 1 to 6, wherein the plurality of clamping structures are arranged on the same side of the quick-change plate.

8. A clamping device, characterized in that: It comprises a mounting plate and the quick-change assembly according to claim 7, wherein the quick-change plate is detachably connected to the mounting plate.

9. The pressing device according to claim 8, characterized in that: The quick-change assembly further includes a positioning portion disposed on the quick-change plate, the clamping device includes a chuck disposed on the mounting plate, and the positioning portion is unlockably connected to the chuck.

10. The pressing device according to claim 8, characterized in that: The mounting plate is provided with a first through hole for connecting to the protective gas storage device, and the quick-change plate is provided with a second through hole connected to the protective gas channel. The first through hole and the second through hole can be connected and connected.

11. The pressing device according to claim 10, characterized in that: The first through hole is connected to a first quick connector, which is used to connect to the protective gas storage device through a first pipeline. The second through hole is connected to a second quick connector. The air inlet of the protective gas channel is connected to a third quick connector. The second quick connector and the third quick connector are connected through a second pipeline.

12. The pressing device according to claim 8, characterized in that: The quick-change plate is provided with a third through hole, the third through hole is connected to the dust removal channel connected to the welding channel, the mounting plate is provided with a fourth through hole for connecting with the dust collecting device, and the third through hole and the fourth through hole can be connected and connected.

13. The pressing device according to claim 12, characterized in that: The dust removal port of the dust removal channel is connected with a fourth quick connector, the third through hole is connected with a fifth quick connector, and the fourth quick connector and the fifth quick connector are connected through a third pipeline.

14. The pressing device according to claim 13, characterized in that: A dust removal cover is provided on the side of the mounting plate facing away from the quick-change plate, a flow channel space is enclosed between the dust removal cover and the mounting plate, the fourth through hole is connected to the flow channel space, a dust removal pipe connected to the flow channel space is provided on the dust removal cover, and the dust removal pipe is used to be connected to the dust collecting device.

15. The pressing device according to claim 8, characterized in that: The clamping device also includes a distance measuring device arranged on the side of the mounting plate away from the quick-change plate, the distance measuring device includes a distance meter and a driving member, the driving member is used to drive the distance meter to move, the mounting plate has a laser port connected to the welding channel, and the distance meter is used to measure the distance between the clamping structure and the workpiece to be welded through the laser port and the welding channel.

16. A welding device, characterized in that: It comprises a transfer device and the pressing device described in any one of claims 8 to 15, wherein the transfer device is connected to the pressing device and is used to drive the pressing device to press the workpiece to be welded.

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