Welding apparatus

Abstract

A welding apparatus, used for welding a first weld member (9) to a second weld member (10). The welding apparatus comprises a first positioning mechanism (1), a second positioning mechanism (2), and a welding mechanism (3). The first positioning mechanism (1) comprises a first positioning member (11) and a second positioning member (12); the first positioning member (11) is provided with a positioning protrusion (111); the second positioning member (12) is movably arranged corresponding to the positioning protrusion (111); the second positioning mechanism (2) is movably arranged on one side of the second weld member (10) in a first direction; the first positioning mechanism (1) presses the first weld member (9) against the side surface of the positioning protrusion (111) close to the second positioning member (12), so as to complete the positioning of the first weld member (9); and the second positioning mechanism (2) adjusts the relative position of the second weld member (10) relative to the first weld member (9) in the first direction. The welding apparatus can improve the positioning precision between the two weld members, thereby ensuring concentricity requirements.

Description

Welding device

[0001] The present disclosure claims priority to a Chinese patent application No. 202411091522.7, filed on August 09, 2024, and entitled "A welding device", the entire content of which is incorporated herein by reference.

[0002] The present disclosure claims priority to a Chinese patent application No. 202421925632.4, filed on August 09, 2024, and entitled "A welding device", the entire content of which is incorporated herein by reference. TECHNICAL FIELD

[0003] The present disclosure relates to a welding device. BACKGROUND

[0004] In the welding process, especially in the welding process of the tab and the cap in the cylindrical battery, the positional relationship of the tab and the cap directly affects the welding quality of the tab and the cap, thereby affecting the quality of the battery, and the positioning accuracy between the two welding pieces in the existing welding device is poor, which cannot guarantee the concentricity requirement of the tab and the cap. SUMMARY

[0005] Therefore, it is necessary to provide a welding device for improving the above-mentioned defects in view of the poor positioning effect of the related art welding device.

[0006] The present disclosure provides a welding device for welding a first welding piece and a second welding piece, the welding device comprising:

[0007] a first positioning mechanism comprising a first positioning piece and a second positioning piece, the first positioning piece being provided with a positioning protrusion, and the second positioning piece being movably provided corresponding to the positioning protrusion to push the first welding piece to abut against the side surface of the second positioning piece close to the second positioning piece;

[0008] a second positioning mechanism movably provided on one side of the second welding piece along a first direction to push the second welding piece to move along the first direction, so as to adjust the relative position of the second welding piece relative to the first welding piece in the first direction; and

[0009] a welding mechanism provided on the side of the second welding piece away from the first welding piece.

[0010] By setting the first positioning mechanism to abut the first welding piece on the side of the positioning protrusion close to the second positioning piece, the positioning of the first welding piece is completed, and then the relative position of the second welding piece in the first direction relative to the first welding piece is adjusted by the second positioning mechanism, so as to ensure the position accuracy of the first welding piece and the second welding piece. On the one hand, the positioning accuracy can be improved to ensure the welding quality; on the other hand, when the size of the second welding piece changes, only the position of the second welding piece in the first direction needs to be adjusted to realize accurate positioning, which can adapt to second welding pieces of different sizes and improve the compatibility of the welding device.

[0011] In some embodiments, the second positioning piece is provided with an abutting portion on one side close to the positioning protrusion, and the surface of the abutting portion close to the positioning protrusion is recessed inward to form a recessed portion.

[0012] In some embodiments, the bottom surface of the recessed portion is a plane, and the side surface is a curved surface; and / or the shape of the side of the positioning protrusion close to the second positioning piece is consistent with the shape of the surface of the first welding piece abutting against the positioning protrusion.

[0013] In some embodiments, the welding device further comprises a rack, the second positioning piece is movably arranged on the rack, and a first elastic piece is arranged between the rack and the second positioning piece to push the first welding piece to abut against the side of the positioning protrusion close to the second positioning piece.

[0014] In some embodiments, a guide hole is arranged on the rack, the second positioning piece comprises a guide rod, the abutting portion is arranged on one end of the guide rod close to the positioning protrusion, the guide rod is arranged in the guide hole, and the first elastic piece is sleeved on the guide rod.

[0015] In some embodiments, the second positioning piece further comprises a sleeve, the sleeve is arranged between the guide rod and the guide hole, and a limiting distance is provided between the sleeve and the abutting portion.

[0016] In some embodiments, the second positioning mechanism comprises a pushing portion and a driving portion drivingly connected with the pushing portion, and the pushing portion is movably arranged on one side of the second welding piece in the first direction X.

[0017] In some embodiments, the welding device further comprises a clamp, the clamp comprises a first clamping portion and a second clamping portion arranged at intervals in a second direction, a containing portion for containing the second welding piece is formed between the first clamping portion and the second clamping portion, and the second direction is perpendicular to the first direction.

[0018] The distance between the first clamping portion and the second clamping portion in the second direction is variable to adjust the size of the containing portion.

[0019] In some embodiments, the clamp further comprises:

[0020] The connecting assembly comprises a first connecting member and a second connecting member, the first connecting member is connected with the first clamping part, and the second connecting member is connected with the second clamping part.

[0021] In some embodiments, the clamp further comprises a clamp driving member, the clamp driving member comprises a second elastic member arranged between the first connecting member and the second connecting member, a protruding part arranged on the first clamping part, and a guiding part in abutment with the protruding part to drive the protruding part to move in the second direction.

[0022] In some embodiments, the welding mechanism comprises a pressing member arranged on a side of the second welding member away from the first welding member and movable in a second direction to press the first welding member and the second welding member, the second direction being perpendicular to the first direction.

[0023] In some embodiments, the welding mechanism further comprises a dust removal member arranged in communication with the pressing member.

[0024] In some embodiments, the second positioning member is arranged in correspondence with the positioning protrusion and movable in the first direction to push the first welding member to abut against a side of the positioning protrusion away from the second positioning member.

[0025] In some embodiments, the first positioning member further comprises a suction accessory for suction fixing the first welding member.

[0026] In some embodiments, the suction accessory comprises a suction part for suctioning the first welding member and a negative pressure part arranged in communication with the suction part.

[0027] In some embodiments, the welding device further comprises a rack and a transfer mechanism, the transfer mechanism comprises a rotating assembly rotatably arranged on the rack and a holding assembly movably arranged on the rotating assembly in a preset direction.

[0028] In some embodiments, the rotating assembly comprises a mounting member rotatably arranged on the rack and a connecting member, the holding assembly is arranged on the connecting member.

[0029] The mounting member is provided with a guide rail extending in the preset direction, and the connecting member is provided with a sliding block movably arranged on the guide rail, or the connecting member is provided with a guide rail extending in the preset direction, and the mounting member is provided with a sliding block movably arranged on the guide rail.

[0030] In some embodiments, the transferring mechanism further comprises a pushing rod rotatably arranged on the frame, the pushing rod comprises a first pushing portion, an end of the first pushing portion away from the frame pushes the connecting member to move in a preset direction during rotation, and a third elastic member is arranged on a side of the connecting member away from the pushing rod, and one end of the third elastic member abuts against the connecting member and the other end abuts against the mounting member.

[0031] In some embodiments, the pushing rod further comprises a second pushing portion, the second pushing portion perpendicularly intersects with the first pushing portion at a rotation center of the pushing rod and the frame, and an end of the second pushing portion away from the frame pushes the connecting member to move in a preset direction during rotation.

[0032] In some embodiments, the welding device further comprises a first conveying line on which a plurality of trays are arranged, the first conveying line conveys the plurality of trays, and / or a second conveying line on which a plurality of first positioning members are arranged, the second conveying line is used to convey the plurality of first positioning members.

[0033] The transferring mechanism is arranged between the first conveying line and the second conveying line, and is used to transfer the first welding member from the first conveying line to the second conveying line.

[0034] In some embodiments, the second conveying line is further provided with a detection member, which is used to detect the first welding member on the first positioning member.

[0035] In some embodiments, the second conveying line is further provided with a detection block, which is arranged correspondingly with the first positioning member to detect the position of the first positioning member. BRIEF DESCRIPTION OF DRAWINGS

[0036] FIG. 1 is a structural schematic view of a welding device in an embodiment of the present disclosure;

[0037] FIG. 2 is a top view of FIG. 1;

[0038] FIG. 3 is a front view of FIG. 1;

[0039] FIG. 4 is a partial enlarged view of position A in FIG. 3;

[0040] FIG. 5 is a partial enlarged view of position B in FIG. 3;

[0041] FIG. 6 is a structural schematic view of a first positioning mechanism in an embodiment of the present disclosure;

[0042] FIG. 7 is a sectional view of FIG. 6 along C-C;

[0043] FIG. 8 is a partial enlarged view of position D in FIG. 7;

[0044] Fig. 9 is a structural schematic diagram of the clamp and the second positioning mechanism in the embodiment of the present disclosure;

[0045] Fig. 10 is an enlarged view of position E in Fig. 9;

[0046] Fig. 11 is a right view of Fig. 10;

[0047] Fig. 12 is an enlarged view of position F in Fig. 11;

[0048] Fig. 13 is a structural schematic diagram of the welding mechanism in the embodiment of the present disclosure;

[0049] Fig. 14 is a structural schematic diagram of the transfer mechanism in a horizontal posture in the embodiment of the present disclosure;

[0050] Fig. 15 is a front view of Fig. 14;

[0051] Fig. 16 is a structural schematic diagram of the transfer mechanism in a vertical posture in the embodiment of the present disclosure;

[0052] Fig. 17 is a right view of Fig. 16;

[0053] BRIEF DESCRIPTION OF THE DRAWINGS: 1 first positioning mechanism; 11 first positioning member, 111 positioning protrusion, 112 suction member, 1121 suction part, 1122 negative pressure part; 12 second positioning member, 121 abutting part, 1211 recessed part, 12111 bottom surface, 12112 side surface; 122 first elastic member; 123 guide rod; 124 sleeve; 2 second positioning member; 21 pushing part; 22 driving part; 3 welding mechanism; 31 pressing member; 32 dust removal member, 33 laser emitting member; 4 rack; 41 guide hole; 5 clamp; 51 first clamping part; 52 second clamping part; 53 accommodating part; 54 connecting assembly, 541 first connecting member, 5411 guide rail, 542 second connecting member, 5421 sliding block; 55 clamp driving member, 551 second elastic member, 552 protruding part, 553 guide part; 6 transfer mechanism; 61 rotating assembly, 611 mounting member, 6111 guide rail, 612 connecting member, 6121 sliding block; 62 holding assembly; 63 pushing rod, 631 first pushing part, 632 second pushing part; 64 third elastic member; 7 first conveying line; 71 tray; 8 second conveying line; 81 detection member; 82 detection block; 9 first welding member; 10 second welding member; S limiting distance; X first direction; Y second direction. DETAILED DESCRIPTION

[0054] In order to make the above objectives, features and advantages of the present disclosure more clear and easier to understand, the specific embodiments of the present disclosure will be described in detail below with reference to the drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure. However, the present disclosure can be practiced in many different ways from those described herein, and skilled artisans will recognize that the present disclosure is not limited to the embodiments described herein. Therefore, the specific embodiments disclosed herein are illustrative only and not restrictive of the present disclosure.

[0055] In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "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 the purpose of facilitating the description of the present disclosure and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present disclosure.

[0056] In addition, the terms "first", "second", "third" and the like are used only for descriptive purposes and should not be construed as indicating or implying relative importance or implying a specified number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present disclosure, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0057] In the present disclosure, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.

[0058] In the present disclosure, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0059] It is to be understood that when an element such as a layer, region or substrate is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element or intervening elements can be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements present. It will be understood that, when a part is referred to as being "fixed to" or "set on" another part, it can be directly on the other part or there can be an intervening part. When a part is referred to as being "connected to" another part, it can be directly connected to the other part or there can be an intervening part. The terms "vertical", "horizontal", "upper", "lower", "left", "right", and similar expressions as used herein are for illustrative purposes only and are not intended to be limiting.

[0060] In order to more clearly understand the embodiments of the present disclosure, the embodiments of the present disclosure are described in detail below with reference to Figs. 1-17.

[0061] As shown in Figs. 1-17, the present disclosure provides a welding device for welding a first welding piece 9 and a second welding piece 10, the welding device comprising a first positioning mechanism 1, a second positioning mechanism 2 and a welding mechanism 3. The first positioning mechanism 1 comprises a first positioning piece 11 and a second positioning piece 12, the first positioning piece 11 is provided with a positioning protrusion 111, and the second positioning piece 12 is movably provided corresponding to the positioning protrusion 111 to push the first welding piece 9 to abut against the side of the positioning protrusion 111 close to the second positioning piece 12; the second positioning mechanism 2 is movably provided on one side of the second welding piece 10 along a first direction X to push the second welding piece 10 to move along the first direction X to adjust the relative position of the second welding piece 10 relative to the first welding piece 9 in the first direction X; and the welding mechanism 3 is provided on the side of the second welding piece 10 away from the first welding piece 9.

[0062] The first welding piece 9 and the second welding piece 10 can be any parts that need to be welded together, for example, in the process of producing a battery, the first welding piece 9 and the second welding piece 10 can be a cap and a battery respectively, the battery is provided with a tab at one end, and the relative position of the cap and the battery is adjusted to ensure the position of the cap and the tab and the precision of welding.

[0063] The second positioning piece 12 is movably provided corresponding to the positioning protrusion 111, that is, the second positioning piece 12 is provided corresponding to the positioning protrusion 111 and the second positioning piece 12 is movably provided to move away from or close to the positioning protrusion. It should be noted that the second positioning piece 12 corresponds to the positioning protrusion 111, that is, the second positioning piece 12 and the positioning protrusion 111 can correspond in any direction parallel to the plane on which the first positioning piece 11 places the first welding piece 9 (that is, any direction in the plane shown in Fig. 6), and the corresponding second positioning piece 12 is movably provided in the direction towards the positioning protrusion 111 to close to the positioning protrusion 111 to push the first welding piece 9 to abut against the side of the positioning protrusion 111 close to the second positioning piece 12.

[0064] The movable arrangement of the second positioning member 12 can be achieved by a guide rail and sliding block mechanism, or by a gear and rack mechanism or a screw mechanism. For example, the second positioning member 12 is connected with a screw nut of the screw mechanism, and when the screw is rotated, the screw nut moves along the extension direction of the screw with the second positioning member 12. By arranging the first positioning mechanism 1, the first welding member 9 is placed on the first positioning member 11, and then the second positioning member 12 pushes the first welding member 9 against the positioning protrusion 111 to achieve the positioning of the first welding member 9.

[0065] The second positioning mechanism 2 is movably arranged on one side of the second welding member 10 along the first direction X, and the movable arrangement of the second positioning mechanism can also be achieved by a guide rail and sliding block mechanism, or by a gear and rack mechanism or a screw mechanism. By arranging the positioning mechanism 2 to push the second welding member 10 to move along the first direction X, the relative position of the first welding member 9 and the second welding member 10 in the first direction is adjusted, and the positioning accuracy of the two is ensured.

[0066] In addition, the movable arrangement of the second positioning mechanism 2 along the first direction X can also adapt to second welding members 10 of different sizes. For example, when welding the battery tab and the cap, the length of the tab extending out will be different due to the manufacturing error of the battery specification or the previous process, and the position of the tab can be adjusted by the movement of the first positioning mechanism 2 to ensure the relative position between the tab and the cap and improve the welding quality of the two.

[0067] The welding mechanism 3 refers to a component that can emit laser to weld the first welding member 9 and the second welding member 10 together. Since the first positioning member 11 is arranged on the side of the first welding member 9 away from the second welding member 10, the welding mechanism 3 is arranged on the side of the second welding member 10 away from the first welding member 9, which can avoid the interference between the welding mechanism 3 and the first positioning member 11.

[0068] By arranging the first positioning mechanism 1 to abut the first welding member 9 against the side of the positioning protrusion 111 close to the second positioning member 12, the positioning of the first welding member 9 is completed, and then the relative position of the second welding member 10 relative to the first welding member 9 in the first direction X is adjusted by the second positioning mechanism 2, so as to ensure the position accuracy of the first welding member 9 and the second welding member 10. On the one hand, the positioning accuracy can be improved to ensure the welding quality, and on the other hand, when the size of the second welding member 10 changes, only the position of the second welding member 10 in the first direction X needs to be adjusted to achieve accurate positioning, which can adapt to second welding members 10 of different sizes and improve the compatibility of the welding device.

[0069] As shown in FIGS. 6-8, in some embodiments, the side of the second positioning member 12 close to the positioning protrusion 111 is provided with an abutting portion 121, and the surface of the abutting portion 121 close to the positioning protrusion 111 is recessed inward to form a recessed portion 1211.

[0070] By setting the recess 1211, the first welding piece 9 can be limited in the recess. On the one hand, the first welding piece 9 can be pre-positioned when the first welding piece 9 is put into the first positioning mechanism 1, thereby improving the positioning accuracy. On the other hand, the first welding piece 9 can be limited, thereby avoiding the first welding piece 9 from being skewed when the first welding piece 9 is moved under the pushing of the second positioning piece 12, thereby ensuring the positioning accuracy.

[0071] As shown in FIG. 8, in some embodiments, the bottom surface 12111 of the recess 1211 is a plane, and the side surface 12112 is a curved surface; and / or the shape of the side surface of the positioning protrusion 111 close to the second positioning piece 12 is consistent with the shape of the surface of the first welding piece 9 abutting against the positioning protrusion.

[0072] In some embodiments, the bottom surface 12111 of the recess 1211 is a plane, and the side surface 12112 is a curved surface. On the one hand, by setting the bottom surface 12111 of the recess 1211 as a plane, when the abutting part 121 abuts against the first welding piece 9, the first welding piece 9 can abut against the bottom surface 12111 stably, thereby avoiding the first welding piece 9 from being skewed or even separated from the recess under the pushing of the second positioning piece 12, thereby ensuring the positioning accuracy of the first welding piece 9. On the other hand, by setting the side surface 12112 of the recess 1211 as a curved surface, when the first welding piece 9 is put into the recess 1211, the first welding piece 9 can be guided into the recess 1211 along the curved surface and abut against the plane of the bottom, thereby facilitating the positioning of the first welding piece 9.

[0073] In other embodiments, the shape of the side surface of the positioning protrusion 111 close to the second positioning piece 12 is consistent with the shape of the surface of the first welding piece 9 abutting against the positioning protrusion. For example, when the surface of the first welding piece 9 abutting against the positioning protrusion 111 is a circular arc, the shape of the side surface of the positioning protrusion 111 close to the second positioning piece 12 is also a circular arc; and when the surface of the first welding piece 9 abutting against the positioning protrusion 111 is a plane, the shape of the side surface of the positioning protrusion 111 close to the second positioning piece 12 is also a plane. By setting the shape of the side surface of the positioning protrusion 111 close to the second positioning piece 12 to be consistent with the shape of the surface of the first welding piece 9 abutting against the positioning protrusion, the area of the abutting surface of the positioning protrusion 111 and the first welding piece 9 can be increased, thereby ensuring the relative position of the first welding piece 9 on the first positioning mechanism 11 and improving the positioning accuracy.

[0074] In still other embodiments, the bottom surface 12111 of the recess 1211 is a plane, the side surface 12112 is a curved surface, and the shape of the side surface of the positioning protrusion 111 close to the second positioning piece 12 is consistent with the shape of the surface of the first welding piece 9 abutting against the positioning protrusion. The relative position of the first welding piece 9 in the first positioning mechanism 1 can be ensured to the maximum, thereby improving the positioning accuracy.

[0075] As shown in FIG. 6 and FIG. 7, in some embodiments, the welding device 1 further comprises a rack 4, the second positioning member 12 is movably arranged on the rack 4, and a first elastic member 122 is arranged between the rack 4 and the second positioning member 12 to push the first welding member 9 to abut against the side of the positioning protrusion 111 close to the second positioning member 12.

[0076] The rack 4 refers to a component that is relatively static with the ground. By movably arranging the second positioning member 12 on the rack 4, the adjustment of the moving distance and direction of the second positioning member 12 is facilitated.

[0077] The movably arrangement between the second positioning member 12 and the rack 4 can be realized by a guide rail and sliding block mechanism, or by a gear and rack mechanism or a screw mechanism, and the embodiments of the present disclosure do not limit this.

[0078] The first elastic member 122 arranged between the rack 4 and the second positioning member 12 can be a component made of elastic material such as rubber, or can be a spring. Specifically, the first elastic member 122 can be arranged between two surfaces arranged opposite to each other of the rack 4 and the second positioning member 12. At this time, the first elastic member 122 can be clamped between the two surfaces, or recesses can be arranged on the two surfaces to accommodate the first elastic member 122, so as to prevent the first elastic member 122 from coming off between the two opposite surfaces. It should be noted that at this time, the recess depth of the recess should be less than the length of the first elastic member 122, so as to ensure that the first elastic member 122 can be compressed.

[0079] By arranging the first elastic member 122, on the one hand, when the first welding member 9 is put into the first positioning mechanism 1, the distance between the abutting portion 121 and the positioning protrusion 111 can be increased by compressing the first elastic member 122, so as to facilitate the first welding member 9 to be put into the recess 1211; on the other hand, after the first welding member 9 is put into the recess 1211, the first welding member 9 can be driven by the elastic force of the first elastic member 122 to abut against the positioning protrusion 111, so as to ensure the position of the first welding member 9 in the first positioning mechanism 1 and improve the positioning accuracy. By arranging the first elastic member 122, the structure is simple, the operation is convenient, and no other driving structure is needed.

[0080] As shown in FIG. 6 to FIG. 8, in some embodiments, the rack 4 is provided with a guide hole 41, the second positioning member 12 comprises a guide rod 123, the abutting portion 121 is arranged on the side of the guide rod 123 close to the positioning protrusion 111, the guide rod 123 is arranged through the guide hole 41, and the first elastic member 122 is sleeved on the guide rod 123.

[0081] The cross-sectional shape of the guide rod 123 can be a regular shape such as a circle, a square, etc., or an irregular shape formed by combining an arc and / or a straight line. It should be noted that the cross-sectional shape of the guide rod 123 corresponds to the cross-sectional shape of the guide hole 41, so that the guide rod 123 can be arranged in the guide hole 41 and can move relative to the guide hole 41.

[0082] The abutting portion 121 and the guide rod 123 can be integrally formed or separately manufactured and assembled together. When the abutting portion 121 and the guide rod 123 are separately manufactured and assembled, they can be connected in a detachable manner such as clamping or threaded connection, or in a non-detachable manner such as welding or bonding, and the present disclosure does not limit this.

[0083] The first elastic member 122 is sleeved on the guide rod 123, which can prevent the first elastic member 122 from being separated from between the rack 4 and the second positioning member 12. Specifically, a mounting protrusion can be provided on the guide rod 123, one end of the first elastic member 122 is abutted on the mounting protrusion, and the other end is abutted on a surface of the rack 4 corresponding to the mounting protrusion. When the guide rod 123 moves away from the first positioning member 11, the first elastic member 122 is compressed to increase the distance between the positioning protrusion 111 and the second positioning member 12, facilitating the placement of the first welding member 9. After the first welding member 9 is placed between the positioning protrusion 111 and the second positioning member 12, the compressed first elastic member 122 can provide an elastic force to make the first welding member 9 abut against the positioning protrusion 111.

[0084] The relative movement of the second positioning member 12 relative to the rack 4 is achieved by providing the guide hole 41 and the guide rod 123, which is simple in structure and reliable in movement.

[0085] As shown in FIGS. 6-8, in some embodiments, the second positioning member 12 further includes a sleeve 124, which is arranged between the guide rod 123 and the guide hole 41, and has a limiting distance S between the sleeve 124 and the abutting portion 121.

[0086] On the one hand, by providing the sleeve 124, the friction between the guide rod 123 and the guide hole 41 can be transferred to the guide rod 123 and the sleeve 124, which protects the rack 4, because the sleeve 124 is easier to replace after wear compared to the rack 4. On the other hand, by providing the sleeve 124, the contact distance between the sleeve 124 and the guide rod 123 can be increased by increasing the length of the sleeve without increasing the size of the welding device, which enhances the guiding effect of the guide rod 123 and prevents the guide rod 123 from deviating when moving.

[0087] Further, the sleeve 124 is arranged to form a limiting distance S between the sleeve 124 and the abutting portion 121, and when the second positioning member 12 moves away from the first positioning member 11, the limiting of the abutting portion 121 by the sleeve 124 can prevent the second positioning member 12 from moving too far and damaging the first elastic member 122, thereby improving the service life of the welding device.

[0088] As shown in FIGS. 1, 3, 4, 11 and 12, in some embodiments, the second positioning mechanism 2 comprises a pushing portion 21 and a driving portion 22 drivingly connected with the pushing portion 21, and the pushing portion 21 is movably arranged on one side of the second welding member 10 along the first direction X.

[0089] The pushing portion 21 refers to a component for pushing the second welding member 10 to move along the first direction X, and the movable arrangement of the pushing portion 21 can be achieved by a guide rail slider, or by a gear and rack mechanism or a screw mechanism.

[0090] In some embodiments, the driving portion 22 can be an electric motor. For example, when the movable arrangement of the pushing portion 21 is achieved by a gear and rack mechanism, the rack is arranged to extend along the first direction X, and the pushing portion 21 is fixedly connected to the rack, and the electric motor drives the gear to rotate, thereby driving the rack and the pushing portion 21 to move along the first direction X; or when the movable arrangement of the pushing portion 21 is achieved by a screw mechanism, the screw is arranged to extend along the first direction X, and the pushing portion 21 is fixedly connected to a nut, and the electric motor drives the screw to rotate, thereby driving the nut and the pushing portion 21 to move along the first direction X.

[0091] In other embodiments, the driving portion 22 can also be an electric cylinder, a pneumatic cylinder or a hydraulic cylinder. For example, when the movable arrangement of the pushing portion 21 is achieved by a guide rail slider, the guide rail is arranged to extend along the first direction X, and the pushing portion 21 is fixedly connected to the slider, and the electric cylinder, the pneumatic cylinder or the hydraulic cylinder drives the slider to move along the guide rail, thereby achieving the movement of the pushing portion 21 along the first direction X.

[0092] By arranging the pushing portion 21 and the driving portion 22, the movement of the second welding member 10 along the first direction X is achieved by the second positioning mechanism 2, which is simple in structure and facilitates the adjustment of the relative position of the second welding member 10 and the first welding member 9.

[0093] As shown in FIGS. 4, 9 to 12, in some embodiments, the welding device further comprises a clamp 5, the clamp 5 comprises a first clamping portion 51 and a second clamping portion 52 arranged at intervals along a second direction Y, a containing portion 53 for containing the second welding member 10 is formed between the first clamping portion 51 and the second clamping portion 52, and the second direction Y is perpendicular to the first direction X; and the distance between the first clamping portion 51 and the second clamping portion 52 along the second direction Y is variable to adjust the size of the containing portion 53.

[0094] The clamp 5 refers to a component for clamping and fixing the second welding member 10.

[0095] In some embodiments, the first clamping part 51 and the second clamping part 52 can be baffles extending along a third direction, and the second welding member 10 is clamped and fixed in the accommodating part 53 by the baffles, so as to realize the fixation of the second welding member 10. The third direction is perpendicular to the first direction and the second direction.

[0096] In other embodiments, when the second welding member 10 is cylindrical, for example, the tab and the cap of the cylindrical battery are welded, the first clamping part 51 and / or the second clamping part 52 can be a component composed of a first cylinder and a second cylinder arranged at intervals along the third direction. The first cylinder and the second cylinder can be a complete cylinder or a half cylinder. When the first cylinder and the second cylinder are complete cylinders, they can be fixed cylinders or cylinders that can rotate around the self-axis. The present disclosure does not limit this. When the first cylinder and the second cylinder are half cylinders, the half of the cylinder should be arranged towards the other fixed part to form the accommodating part 53. It should be noted that the first cylinder and the second cylinder can be the same structure in the above-mentioned several structures, or a combination of different structures in the above-mentioned several structures. When one of the first clamping part 51 and the second clamping part 52 is a component composed of a first cylinder and a second cylinder, the other can also be the above-mentioned baffle structure.

[0097] The distance between the first clamping part 51 and the second clamping part 52 along the second direction Y can be changed. Specifically, one of the first clamping part 51 and the second clamping part 52 can move along the second direction Y, or both of the first clamping part 51 and the second clamping part 52 can move along the second direction Y. In addition, the change of the distance between the first clamping part 51 and the second clamping part 52 along the second direction Y can be realized by a guide rail and a sliding block mechanism, or by a connecting rod mechanism or a gear and rack mechanism. The present disclosure does not limit the embodiments.

[0098] By setting the clamp 5, the clamping and loosening of the second welding piece 10 can be realized by changing the distance between the first clamping part 51 and the second clamping part 52 along the second direction Y. For example, when the relative position of the second welding piece 10 needs to be adjusted, the distance between the first clamping part 51 and the second clamping part 52 along the second direction Y is increased, so as to loosen the second welding piece 10, at this time, the second welding piece 10 can be pushed by the second positioning mechanism 2, so as to adjust the relative position of the second welding piece 10 and the first welding piece 9 along the first direction X. After adjustment, the distance between the first clamping part 51 and the second clamping part 52 along the second direction Y is reduced, so as to clamp and fix the second welding piece 10, prevent the second welding piece 10 from deviating, and ensure the positioning accuracy.

[0099] As shown in FIGS. 4, 10 and 12, in some embodiments, the clamp 5 further comprises a connecting assembly 54, the connecting assembly 54 comprising a first connecting piece 541 and a second connecting piece 542 which are movable along the second direction Y, the first connecting piece 541 being connected with the first clamping part 51, and the second connecting piece 542 being connected with the second clamping part 52.

[0100] The movable connection between the first connecting piece 541 and the second connecting piece 542 can adopt the connection mode of guide rail and sliding block, or the connection mode of gear and rack. For example, in some embodiments, one of the first connecting piece 541 and the second connecting piece 542 is provided as a guide rail extending along the second direction Y, and the other is provided as a sliding block matched with the guide rail, so as to realize the movable connection between the first connecting piece 541 and the second connecting piece 542 through the guide rail and sliding block mechanism.

[0101] The connection between the first connecting piece 541 and the first clamping part 51 can adopt a detachable connection mode such as threaded connection or clamping, or a non-detachable connection mode such as welding or bonding. Similarly, the connection between the second connecting piece 542 and the second clamping part 52 can adopt a detachable connection mode such as threaded connection or clamping, or a non-detachable connection mode such as welding or bonding.

[0102] By setting the first connecting piece 541 and the second connecting piece 542, the movable connection of the first clamping part 51 and the second clamping part 52 can be realized, and further the size adjustment of the accommodating part 53 can be realized.

[0103] As shown in FIGS. 4, 10 and 12, in some embodiments, the clamp 5 further comprises a clamp driving piece 55, the clamp driving piece 55 comprising a second elastic piece 551, a convex part 552 and a guide part 553. The second elastic piece 551 is arranged between the first connecting piece 541 and the second connecting piece 542; the convex part 552 is arranged on the first clamping part 51; and the guide part 553 abuts against the convex part 552 to drive the convex part 552 to move along the second direction Y.

[0104] The second elastic member 551 can be a component made of an elastic material such as rubber, or can be a spring. The second elastic member 551 can be detachably clamped between the two opposite surfaces of the first connecting member 541 and the second connecting member 542. Specifically, recesses can be provided on the two opposite surfaces of the first connecting member 541 and / or the second connecting member 542, and the second elastic member 551 is arranged in the recesses. It should be noted that the length of the second elastic member 551 should be greater than the recess depth of the recesses, so as to ensure that the second elastic member 551 can be compressed. Of course, the second elastic member 551 can also be directly fixed on the two opposite surfaces of the first connecting member 541 and / or the second connecting member 542.

[0105] By arranging the second elastic member 551, on the one hand, the first connecting member 541 can return to the clamping position under the action of the elastic force when the guide portion 553 removes the external force, without the need for additional driving force; on the other hand, the second elastic member 551 can also provide an elastic force for the first connecting member 541, so as to ensure that the second welding member 10 can be clamped and fixed between the first clamping portion 51 and the second clamping portion 52 under the action of the elastic force, and will not cause the second welding member 10 to be damaged due to excessive clamping force.

[0106] The convex portion 552 is arranged on the first clamping portion 51, and the two can be integrally formed or separately manufactured and assembled together. During assembly, detachable connection modes such as clamping or non-detachable connection modes such as welding can be used between the two. In some embodiments, the convex portion 552 can be arranged as a roller that can rotate around its own axis. By arranging the convex portion 552 as a roller that can rotate around its own axis, the friction between the convex portion 552 and the guide portion 553 can be reduced when the convex portion 552 abuts against the guide portion 553, thereby improving the service life of the clamp 5.

[0107] The guide portion 553 is a component that can move along the second direction Y. When the guide portion 553 moves along the second direction Y, the convex portion 552 abutting against the guide portion 553 is driven to move along the second direction Y, thereby driving the first clamping portion 51 to move along the second direction Y, so as to adjust the size of the accommodating portion 53.

[0108] Specifically, as shown in FIG. 4 and FIG. 10, in some embodiments, the first connecting piece 541 includes a shaft portion extending along the second direction Y, the second connecting piece 542 includes a hole portion, and the shaft portion is arranged through the hole portion; the second elastic piece 551 is sleeved on the shaft portion, and one end of the second elastic piece 551 abuts against the first connecting piece 541, and the other end abuts against the second connecting piece 542. The cross-sectional shape of the shaft portion can be a regular shape such as a circle or a square, or an irregular shape. The hole portion is in a shape corresponding to the shaft portion, so as to ensure that the hole portion can be arranged on the shaft portion and can move along the shaft portion. The movable connection of the first connecting piece 541 and the second connecting piece 542 is realized through the cooperation of the shaft portion and the hole portion, which is simple in structure and reliable in movement.

[0109] As shown in FIG. 4 and FIG. 13, in some embodiments, the welding mechanism 3 includes a pressing piece 31, which is movably arranged on the side of the second welding piece 10 away from the first welding piece 9 along the second direction Y, so as to press the first welding piece 9 and the second welding piece 10, and the second direction Y is perpendicular to the first direction X.

[0110] Similarly, the movability of the pressing piece 31 along the second direction Y can be realized by a guide rail and sliding block mechanism, or by a gear and rack mechanism or a screw mechanism.

[0111] By arranging the pressing piece 31, it can be ensured that the second welding piece 10 and the first welding piece 9 are closely attached together, so as to prevent the existence of a gap between them to cause a false weld and other problems, and to ensure the welding quality.

[0112] In some embodiments, the pressing piece 31 is of a hollow structure, so as to form a welding passage in the pressing piece 31, prevent the laser generated by the laser emitter 33 from being blocked, and affect the welding quality.

[0113] As shown in FIG. 4 and FIG. 13, in some embodiments, the welding mechanism 3 further includes a dust removal piece 32, which is arranged in communication with the pressing piece 31.

[0114] The dust removal piece 32 is arranged in communication with the pressing piece 31. In some embodiments, the dust removal piece 32 can be directly arranged on the side wall of the pressing piece 31, so as to reduce the distance between the dust removal piece 32 and the pressing piece 31 and increase the dust removal efficiency; in other embodiments, the communication between the dust removal piece 32 and the pressing piece 31 can also be realized by a connecting piece such as a pipe.

[0115] By arranging the dust removal piece 32, the particles and smoke generated in the welding process can be sucked into the dust removal piece 32, so as to prevent the particles such as welding slag from blocking the laser generated by the laser emitter 33, and improve the welding quality.

[0116] In some embodiments, the welding mechanism 3 further comprises a shielding gas mechanism, which is arranged in communication with the pressing member 31, and is configured to deliver nitrogen, carbon dioxide or other shielding gas to the welding position during the welding process to improve the welding quality.

[0117] As shown in FIG. 1 and FIG. 2, in some embodiments, the second positioning member 12 is arranged in correspondence with the positioning protrusion 111 and is movable along the first direction X to push the first welding member 9 to abut against the side of the positioning protrusion 111 close to the second positioning member 12.

[0118] The second positioning member 12 is arranged in correspondence with the positioning protrusion 111 and is movable along the first direction X, that is, the moving direction of the second positioning member 12 is consistent with the moving direction of the second positioning mechanism 2, and arranging the second positioning member 12 and the second positioning mechanism 2 in the same direction can reduce the floor area of the welding device.

[0119] As shown in FIG. 4 and FIG. 8, in some embodiments, the first positioning member 11 further comprises a suction accessory 112 configured to suction and fix the first welding member 9.

[0120] Specifically, in some embodiments, when the first welding member 9 is made of magnetic material such as iron, the suction accessory 112 can be a magnetic member, which can suction and fix the first welding member 9 by magnetic force. In this case, the suction accessory 112 can be an electromagnet or a permanent magnet, and the present disclosure does not limit the type of the suction accessory 112. In other embodiments, the suction accessory 112 can also be a negative pressure device, which can suction and fix the first welding member 9 by negative pressure.

[0121] By arranging the suction accessory 112, the first welding member 9 can be suctioned and fixed, which can prevent the first welding member 9 from moving after positioning and affecting the positioning accuracy, and can also move the first welding member 9 to other positions for subsequent processes, so that the positioning process and other processes of the first welding member 9 can be distributed and performed in different positions, thereby shortening the working time of the welding device and improving the production efficiency.

[0122] As shown in FIG. 8, in some embodiments, the suction accessory 112 comprises a suction part 1121 and a negative pressure part 1122 arranged in communication with the suction part 1121, and the suction part 1121 is configured to suction the first welding member 9.

[0123] The negative pressure part 1122 refers to a component capable of providing negative pressure, and the suction part 1122 can provide a negative pressure environment for the suction part 1121, so that the first welding member 9 can be suctioned to the suction part 1121. In some embodiments, the negative pressure part 1122 can also be a vacuum device, so that the negative pressure provided by the negative pressure part 1122 reaches the vacuum state, thereby increasing the suction force of the suction part 1121 and improving the suction effect of the first welding member 9.

[0124] By setting the adsorption part 1221 and the negative pressure part 1122 to suck the first welding part 9, the welding device is more applicable compared with the magnetic attraction mode, and the practicality of the welding device can be improved.

[0125] As shown in FIG. 3, FIG. 5 and FIG. 14 to FIG. 17, in some embodiments, the welding device further comprises a rack 4 and a transfer mechanism 6, the transfer mechanism 6 comprises a rotating assembly 61 rotatably arranged on the rack 4 and a holding assembly 62 movably arranged on the rotating assembly 61 in a preset direction.

[0126] The rotating assembly 61 is rotatably arranged on the rack 4, and the rotating connection between the rotating assembly 61 and the rack 4 can be in the form of a rotating shaft connection, or in the form of a universal joint connection, a screw connection, etc. By arranging the rotating assembly 61, the first welding part 9 can be rotated in the rotating process of the rotating assembly 61 relative to the rack 4, and thus the adjustment of the posture of the first welding part 9 can be completed. For example, when the rotating angle of the rotating assembly 61 is 90°, the first welding part 9 can be adjusted from a horizontal posture to a vertical posture (or from a vertical posture to a horizontal posture).

[0127] The holding assembly 62 is a mechanism for holding the first welding part 9. In some embodiments, the holding assembly 62 can be a mechanical gripper, and the holding and placing of the first welding part 9 can be achieved by the opening and closing of the mechanical gripper. In other embodiments, the holding assembly 62 can also be a suction device, and the first welding part 9 can be adsorbed on the holding assembly 62 by the adsorption force generated by the suction negative pressure member. In other embodiments, when the first welding part 9 is made of a magnetic material, the holding assembly 62 can also be a magnetic attraction device, and the first welding part 9 can be magnetically attracted to the holding assembly 62 by magnetic force. At this time, the holding assembly 62 can be an electromagnet, or can be a permanent magnet, and the embodiments of the present disclosure do not limit this.

[0128] The movable connection between the holding assembly 62 and the rotating assembly 61 can be achieved by a guide rail and sliding block mechanism, or by a ball screw mechanism or a screw mechanism, and the embodiments of the present disclosure do not limit this.

[0129] The rotatability of the rotating assembly 61 relative to the rack can be achieved by a motor, or by a gear mechanism or a gear and rack mechanism. The movement of the holding assembly 62 can be achieved by an electric cylinder, a pneumatic cylinder, a hydraulic cylinder, etc., or by a motor driven screw and nut mechanism.

[0130] The preset direction refers to a radial direction with the rotation center of the rotating assembly 61 and the rack 4 as the center. For example, when the transfer mechanism 6 is in the state shown in FIGS. 14 and 15, the preset direction is a vertical direction, so that the holding assembly 62 can move downward to approach or move away from the first welding piece 9; and when the transfer mechanism 6 is in the state shown in FIGS. 16 and 17, the preset direction is a horizontal direction, so that the holding assembly 62 can move horizontally to approach or move away from the first welding piece 9.

[0131] On one hand, by arranging the rotating assembly 61, the posture of the first welding piece 9 held in the holding assembly 62 can be changed under the rotation of the rotating assembly 61; on the other hand, by movably arranging the holding assembly 62 in the rotating assembly 61 along the preset direction, the distance between the holding assembly 62 and the first welding piece 9 can be adjusted in the process of holding and placing the first welding piece 9, and the first welding piece 9 can be transferred from one station to another station under the rotation of the rotating assembly 61. The grabbing, rotating and placing are all realized in the transfer mechanism 6, so that the time for grabbing and placing the first welding piece 9 on the mechanical arm can be saved, and the production efficiency is high.

[0132] As shown in FIGS. 14 to 17, in some embodiments, the rotating assembly 61 comprises a mounting piece 611 and a connecting piece 612. The mounting piece 611 is movably arranged on the rack 41; the holding assembly 62 is arranged on the connecting piece 612; and the mounting piece 611 is provided with a guide rail 6111 extending along the preset direction, and the connecting piece 612 is provided with a sliding block 6121 movably arranged on the guide rail 6111; or the connecting piece 612 is provided with a guide rail extending along the preset direction, and the mounting piece 611 is provided with a sliding block movably arranged on the guide rail.

[0133] That is, one of the guide rail and the sliding block is arranged on the mounting piece 611, and the other is arranged on the connecting piece 612. The movable connection between the connecting piece 612 and the mounting piece 611 is realized through the guide rail and sliding block mechanism, and the structure is simple.

[0134] Similarly, the rotating connection between the mounting piece 611 and the rack 11 can be realized in the form of a rotating shaft connection, or in the form of a universal joint connection, a screw connection, etc. The connection between the holding assembly 62 and the connecting piece 612 can be realized in the form of a thread connection, a clamping connection, etc., or in the form of a welding connection, an adhesive connection, etc. The embodiments of the present disclosure do not limit the connection mode.

[0135] The guide rail and the sliding block are arranged to realize the movable arrangement of the holding assembly 62 relative to the rotating assembly 61 along the preset direction, and the structure is simple and the movement is reliable.

[0136] As shown in FIG. 5 and FIG. 14-17, in some embodiments, the transfer mechanism 6 further comprises a pushing rod 63 and a third elastic member 64. The pushing rod 63 is rotatably arranged on the frame 4, and the pushing rod 63 comprises a first pushing portion 631, and an end of the first pushing portion 631 away from the frame 4 pushes the connecting piece 612 to move in a preset direction during rotation. The third elastic member 64 is arranged on a side of the connecting piece 612 away from the pushing rod 63, and an end of the third elastic member 64 abuts against the connecting piece 612, and the other end abuts against the mounting piece 611.

[0137] The cross section of the pushing rod 63 can be a regular shape such as a circle or a square, or an irregular shape formed by a combination of a line segment and / or an arc, and the present disclosure does not limit this.

[0138] The third elastic member 64 can be a component made of an elastic material such as rubber, or can be a spring. The third elastic member 64 can be detachably clamped between the two opposite surfaces of the connecting piece 612 and the mounting piece 611. Specifically, recesses can be provided on the two opposite surfaces of the connecting piece 612 and / or the mounting piece 611, and the third elastic member 64 is arranged in the recesses. At this time, it should be noted that the length of the third elastic member 64 should be greater than the recess depth of the recesses, so as to ensure that the elastic member can be compressed. Of course, the third elastic member 64 can also be directly fixed on the two opposite surfaces of the connecting piece 612 and / or the mounting piece 611.

[0139] By arranging the first pushing portion 1421, as shown in FIG. 14 and FIG. 15, the pushing rod 63 rotates counterclockwise relative to the frame 4, and at this time the first pushing portion 631 moves downward to push the connecting piece 612 to move downward, so that the holding assembly 62 approaches the first welding member 9, thereby facilitating holding and picking up the first welding member 9. By arranging the third elastic member 64, on the one hand, when the pushing rod 63 pushes the connecting piece 612 to move, it can play a buffering role to prevent the connecting piece 612 and the mounting piece 611 from colliding and being damaged; on the other hand, by arranging the third elastic member 64 on the side of the connecting piece 612 away from the pushing rod 63, when the pushing rod 63 removes the pushing force, the connecting piece 142 can be restored to the initial position under the action of the elastic force, thereby reducing the number of driving members.

[0140] It should be noted that at this time, the movement of the holding assembly 62 in another posture of the transfer mechanism 6 can be achieved by mechanisms such as an electric cylinder, a pneumatic cylinder, or a hydraulic cylinder.

[0141] As shown in FIG. 3, FIG. 5 and FIG. 14-17, in some embodiments, the pushing rod 63 further comprises a second pushing portion 632, the second pushing portion 632 perpendicularly intersects the first pushing portion 631 at the rotation center of the pushing rod 63 and the frame 4, and an end of the second pushing portion 632 away from the frame 4 pushes the connecting piece 612 to move in a preset direction during rotation.

[0142] That is, the foot of the second pushing part 632 and the first pushing part 631 coincides with the rotation center of the pushing rod 63 and the frame 4.

[0143] When the first welding piece 9 is adjusted from the horizontal state to the vertical state, as shown in FIG. 6, when the rotating assembly 61 rotates to the predetermined position, the pushing rod 63 rotates clockwise relative to the frame 4, at this time, since the foot of the second pushing part 632 and the first pushing part 631 coincides with the rotation center of the pushing rod 63 and the frame 4, the second pushing part 632 will move horizontally to the left at the moment of rotation, and further push the connecting part 612 to move to the left, so as to make the holding assembly 62 close to the unloading station. That is, after the foot of the second pushing part 632 and the first pushing part 631 is set to coincide with the rotation center of the pushing rod 63 and the frame 4, all the forces (not the component forces) of the second pushing part 632 are used to push the connecting part 612 to move, so that the pushing force is maximized and the pushing effect is most significant.

[0144] By setting the second pushing part 632, as shown in FIGS. 16 and 17, when the rotating assembly 61 rotates to the predetermined position, the pushing rod 63 rotates clockwise relative to the frame 4, at this time, the second pushing part 632 pushes the connecting part 612 to move in the preset direction, so as to make the holding assembly 62 close to the unloading station, and facilitate the transfer of the first welding piece 9 to the next station.

[0145] As shown in FIGS. 5 and 14-17, in some embodiments, an end of the first pushing part 631 away from the frame 4 is provided with a first roller; and / or an end of the second pushing part 632 away from the frame 4 is provided with a second roller.

[0146] The first roller and the second roller are wheels that can rotate around their own axes.

[0147] By setting the first roller and / or the second roller, when the pushing rod 63 pushes the connecting part 612, the sliding friction between the two can be converted into rolling friction, thereby reducing the wear between the pushing rod 63 and the connecting part 612 and improving the service life of the transfer mechanism 6.

[0148] As shown in FIGS. 1-5, in some embodiments, the welding device further comprises a first conveying line 7 and / or a second conveying line 8. The first conveying line 7 is provided with a plurality of trays 71, and the first conveying line 7 is used to convey the plurality of trays 71; the second conveying line 8 is provided with a plurality of first positioning pieces 11, and the second conveying line 8 is used to convey the plurality of first positioning pieces 11; the transfer mechanism 6 is arranged between the first conveying line 7 and the second conveying line 8, and is used to transfer the first welding piece 9 from the first conveying line 7 to the second conveying line 8.

[0149] That is, in some embodiments, the conveying system comprises the first conveying line 7 or the second conveying line 8; while in other embodiments, the conveying system comprises the first conveying line 7 and the second conveying line 8.

[0150] The first conveying line 7 can be a magnetic levitation conveying line or a chain conveying line, and the embodiments of the present disclosure do not limit this. The tray 71 refers to a component for placing the first welding piece 9, and a plurality of trays 71 are arranged on the first conveying line 7 and are sequentially conveyed to a position corresponding to the transfer mechanism 6 under the conveying of the first conveying line 7.

[0151] In some embodiments, the second conveying line is a rotating disc, which conveys the first welding piece 9 adsorbed on the adsorption member 112 to a welding position by rotation for welding.

[0152] By arranging the first conveying line 7 and / or the second conveying line 8, on the one hand, the time required for the feeding and discharging processes of the first welding piece 9 can be transferred to other processes, so that the feeding, transferring, discharging and welding of the first welding piece 9 can be performed at the same time, avoiding the feeding, transferring, discharging and welding of the first welding piece 9 being performed in the transfer process, so that multiple processes must be performed separately, thereby increasing the production time and affecting the production efficiency.

[0153] As shown in FIG. 5, in some embodiments, the second conveying line 8 is further provided with a detection member 81 for detecting the first welding piece 9 on the first positioning member 11.

[0154] The detection member 81 can be a laser detection device or an image detection device, which is used to detect whether the first welding piece 9 is placed on the first positioning member 11.

[0155] As shown in FIG. 5, in some embodiments, the second conveying line 8 is further provided with a detection block 82, which is arranged corresponding to the first positioning member 11 to detect the position of the first positioning member 11.

[0156] During the operation of the second conveying line 8, when the detection member 81 detects the detection block 82, it indicates that the first positioning member 11 has been conveyed to the correct position, which facilitates the determination of the relative position of the first positioning member 11.

[0157] Specifically, in order to facilitate the following description, the first welding piece 9 and the second welding piece 10 are taken as examples of the cap and the tab, respectively. As shown in FIGS. 1-17, during feeding, the cap 9 is placed in the tray 71, and the plurality of trays 71 reach the transfer station under the conveying of the first conveying line 7.

[0158] At the transferring station, the pushing rod 63 of the transferring mechanism 6 rotates counterclockwise, so that the first pushing part 1421 pushes the holding assembly 62 to be close to the tray 71, and the holding assembly 62 holds the cap 9 on the tray 71. Then, the pushing rod 63 rotates clockwise, so that the holding assembly 62 is driven by the third elastic member 64 to be away from the first conveying line 7, and then the rotating assembly 62 rotates to rotate the cap 9 from the horizontal state to the vertical state. Finally, the pushing rod 63 rotates clockwise, so that the second pushing part 632 pushes the holding assembly 62 to be close to the second conveying line 8, and the cap 9 is attached to the adsorption part 112 of the first positioning member 11, the adsorption part 112 adsorbs and fixes the cap 9, and the holding assembly 62 releases the cap 9, thereby completing the adjustment of the cap 9 from the horizontal state to the vertical state and the transfer of the cap 9 from the first conveying line 7 to the second conveying line 8.

[0159] At the second conveying line 8, after the cap 9 is transferred to the positioning station, the cap 9 enters the recess 1211 along the side surface 12112, and is driven by the elastic force of the first elastic member 122 to abut against the positioning protrusion 111, thereby completing the positioning of the cap 9 in the first positioning mechanism 1. Then, the second conveying line 8 rotates to convey the cap 9 to the welding position.

[0160] At the welding position, the battery is fixed in the clamp 5, and before the cap 9 reaches the welding position, the guide part 553 drives the convex part 552 to release the battery, which can avoid the interference between the tab 10 at one end of the battery and the cap 9, and facilitate the adjustment of the relative position of the tab 10 in the first direction X and the cap 9. After the cap 9 reaches the welding position, the pushing part 21 of the second positioning mechanism 2 is driven by the driving part 22 to push the battery and the tab 10 at one end of the battery to move along the first direction X, so as to adjust the relative position of the tab 10 and the cap 9, and ensure the concentricity of the tab 10 and the cap 9. After the relative position of the tab 10 and the cap 9 is adjusted, the pressing part 31 on the welding mechanism 3 moves along the second direction Y to press the tab 10 and the cap 9, and finally the laser emitting part 31 and the dust removing part 32 are started to complete the welding of the tab 10 and the cap 9. The technical features of the above-described embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the disclosure.

[0161] The above-described embodiments only express several implementation manners of the disclosure, and the description is relatively specific and detailed, but it should not be understood as the limitation on the scope of the patent. It should be noted that for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the disclosure, and these all belong to the protection scope of the disclosure. Therefore, the protection scope of the patent of the disclosure should be subject to the appended claims.

Claims

1. A welding device for welding a first welding member and a second welding member, the welding device comprising: a first positioning mechanism including a first positioning member and a second positioning member, the first positioning member being provided with a positioning protrusion, and the second positioning member being movably arranged corresponding to the positioning protrusion to push the first welding member to abut against a side of the positioning protrusion close to the second positioning member; a second positioning mechanism movably arranged on a side of the second welding member along a first direction to push the second welding member to move along the first direction, so as to adjust a relative position of the second welding member relative to the first welding member in the first direction; and a welding mechanism arranged on a side of the second welding member away from the first welding member. The second positioning member is provided with an abutting portion close to one end of the positioning protrusion, and a surface of the abutting portion close to the positioning protrusion is recessed inward to form a recessed portion.

2. The welding device of claim 1, wherein, A bottom surface of the recessed portion is a plane, and a side surface is a curved surface.

3. The welding device of claim 2, wherein, The shape of the side of the positioning protrusion close to the second positioning member is consistent with the shape of a surface of the first welding member abutting against the positioning protrusion. The welding device further comprises a rack, the second positioning member is movably arranged on the rack, and a first elastic member is arranged between the rack and the second positioning member to push the first welding member to abut against the side of the positioning protrusion close to the second positioning member.

4. The welding device of claim 2 or 3, wherein, The rack is provided with a guide hole, the second positioning member includes a guide rod, the abutting portion is arranged on a side of the guide rod close to the positioning protrusion, the guide rod is arranged in the guide hole, and the first elastic member is sleeved on the guide rod.

5. The welding device of claim 4, wherein, The second positioning member further comprises a sleeve, the sleeve is arranged between the guide rod and the guide hole, and a limiting distance is provided between the sleeve and the abutting portion.

6. The welding apparatus of claim 5, wherein, The second positioning mechanism includes a pushing portion and a driving portion drivingly connected with the pushing portion, and the pushing portion is movably arranged on a side of the second welding member along a first direction X.

7. The welding apparatus of any one of claims 1 to 6, wherein, The welding device further comprises a clamp, the clamp includes a first clamping portion and a second clamping portion arranged at intervals along a second direction, a containing portion for containing the second welding member is formed between the first clamping portion and the second clamping portion, and the second direction is perpendicular to the first direction.

8. The welding apparatus of any one of claims 1 to 7, wherein, A distance between the first clamping portion and the second clamping portion along the second direction is variable to adjust the size of the containing portion. The clamp further comprises:

9. The welding device of claim 8, wherein, a connecting assembly including a first connecting member and a second connecting member movably arranged along the second direction, the first connecting member is connected with the first clamping portion, and the second connecting member is connected with the second clamping portion. The clamp further comprises a clamp driving member, the clamp driving member includes:

10. The welding device of claim 9, wherein, a second elastic member arranged between the first connecting member and the second connecting member; a protruding portion arranged on the first clamping portion; and a guide portion abutting against the protruding portion to drive the protruding portion to move along the second direction. ​ 11. The welding apparatus of any one of claims 1 to 10, wherein, The welding mechanism comprises a pressing member, which is arranged on the side of the second welding member away from the first welding member and is movable in the second direction to press the first welding member and the second welding member, and the second direction is perpendicular to the first direction.

12. The welding apparatus of claim 11, wherein, The welding mechanism further comprises a dust removing member, which is arranged in communication with the pressing member.

13. The welding apparatus of any one of claims 1 to 12, wherein, The second positioning member is arranged in correspondence with the positioning protrusion and is movable in the first direction to push the first welding member to abut against the side of the positioning protrusion away from the second positioning member.

14. The welding apparatus of claim 13, wherein, The first positioning member further comprises a suction accessory for suction fixing the first welding member.

15. The welding apparatus of claim 14, wherein, The suction accessory comprises a suction part and a negative pressure part arranged in communication with the suction part, and the suction part is used for suction of the first welding member.

16. The welding device of claim 14 or 15, wherein, The welding device further comprises a rack and a transfer mechanism, and the transfer mechanism comprises a rotating assembly rotatably arranged on the rack and a holding assembly movably arranged on the rotating assembly in a preset direction.

17. The welding apparatus of claim 16, wherein, The rotating assembly comprises: a mounting member rotatably arranged on the rack; a connecting member, on which the holding assembly is arranged; and a guide rail extending in the preset direction is arranged on the mounting member, a sliding block is arranged on the connecting member, and the sliding block is movably arranged on the guide rail; or a guide rail extending in the preset direction is arranged on the connecting member, and a sliding block is arranged on the mounting member, and the sliding block is movably arranged on the guide rail.

18. The welding apparatus of claim 17, wherein, The transfer mechanism further comprises: a pushing rod rotatably arranged on the rack, the pushing rod comprising a first pushing part, one end of the first pushing part away from the rack pushes the connecting member to move in the preset direction during rotation; and a third elastic member arranged on the side of the connecting member away from the pushing rod, one end of the third elastic member abuts against the connecting member, and the other end abuts against the mounting member.

19. The welding apparatus of claim 18, wherein, The pushing rod further comprises a second pushing part, the second pushing part intersects perpendicularly with the first pushing part at the rotation center of the pushing rod and the rack, and one end of the second pushing part away from the rack pushes the connecting member to move in the preset direction during rotation.

20. The welding apparatus of any one of claims 16 to 19, wherein, The welding device further comprises: a first conveying line, a plurality of trays are arranged on the first conveying line, and the first conveying line conveys the plurality of trays; and / or a second conveying line, a plurality of first positioning members are arranged on the second conveying line, and the second conveying line is used for conveying the plurality of first positioning members; The transfer mechanism is arranged between the first conveying line and the second conveying line, and is used for transferring the first welding member from the first conveying line to the second conveying line.

21. The welding apparatus of claim 20, wherein, The second conveying line further comprises a detection member for detecting the first welding member on the first positioning member.

22. The welding apparatus of claim 21, wherein, The second conveying line further comprises a detection block arranged in correspondence with the first positioning member to detect the position of the first positioning member.

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