jig

Abstract

The present invention discloses a jig, which includes a bearing part, an upper positioning part and a side positioning part. The bearing part is used to bear the product, the upper positioning part is located above the bearing part, and is used to perform upper limit positioning and upper positioning on the parts to be welded in the product, and the side positioning part is located on the side of the bearing part, and is used to perform side limit positioning and side positioning on the parts to be welded in the product. The present application limits and positions the parts to be welded of the product carried by the bearing part through the cooperation of the upper positioning part and the side positioning part, and finally accurately positions the parts to be welded of the product, so that the parts to be welded of the product are stable and their welding positions are determined, thereby ensuring the subsequent welding quality of the product and the quality of the finished product.

Description

Technical Field

[0001] The present invention relates to the technical field of welding equipment, in particular to a jig. Background Art

[0002] Welding equipment is a kind of equipment commonly used in the production process of products. Welding equipment is used to weld two parts of a product together, for example, the welding between the battery shell and the end cover. During welding, the accuracy of the welding position of the two parts to be welded will directly affect the welding quality of the product, and then affect the quality of the final product. However, the welding jigs used in the prior art often cannot guarantee the accuracy of the welding position of the two parts to be welded in the product, which in turn affects the welding quality of the product and the quality of the final product. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a fixture.

[0004] A jig disclosed in the present invention includes a bearing portion, which is used for bearing a product;

[0005] An upper positioning portion, which is located above the bearing portion and is used to perform upper positioning and upper positioning on the components to be welded in the product; and

[0006] The side positioning portion is located on the side of the bearing portion and is used to perform side limiting and side positioning on the parts to be welded of the product.

[0007] According to one embodiment of the present invention, the side positioning portion includes a short side positioning component; the short side positioning component is arranged on one side of the load-bearing portion and faces the short side of the product; the short side positioning component is used to perform side limiting and side positioning on the short sides of the components to be welded in the product.

[0008] According to one embodiment of the present invention, the side positioning portion also includes a first long side positioning component; the first long side positioning component is arranged on one side of the bearing portion and faces one of the components to be welded in the product; the first long side positioning component is used to position the long side of one of the components to be welded in the product.

[0009] According to one embodiment of the present invention, the side panel positioning portion also includes a second long side positioning component; the second long side positioning component is arranged on the side of the load-bearing portion away from the first long side positioning component and faces another component to be welded in the product; the second long side positioning component is used to position the long side of another component to be welded in the product.

[0010] According to one embodiment of the present invention, the bearing part includes a bearing body; the bearing body has a bearing position and an avoidance position; the bearing position is arranged along the periphery of the avoidance position, the bearing position is used for bearing support of the product, and the avoidance position is used for contact avoidance of the product.

[0011] According to an embodiment of the present invention, a long side reference piece is disposed on the bearing body; the long side reference piece is adjacent to the bearing position.

[0012] According to one embodiment of the present invention, the upper positioning part includes an upper positioning drive component and an upper positioning component; the output end of the upper positioning drive component is connected to the upper positioning component, which drives the upper positioning component to approach or move away from the product, and the upper positioning component limits or positions the surface of the product's part to be welded.

[0013] According to one embodiment of the present invention, the short side positioning assembly includes a short side positioning reference member, a short side positioning driving member and a short side positioning member; the short side positioning reference member and the short side positioning member are respectively arranged on two opposite sides of the bearing portion and respectively face the short sides of the product; the driving end of the short side positioning driving member is connected to the short side positioning member, and drives the short side positioning member to limit or position the short side of the component to be welded in the product with the short side positioning reference member as a reference.

[0014] According to one embodiment of the present invention, the first long side positioning assembly includes a first long side positioning drive and a first long side positioning member; the output end of the first long side positioning drive is connected to the first long side positioning member, which drives the first long side positioning member to position the long side of one of the components to be welded in the product.

[0015] According to one embodiment of the present invention, the second long side positioning assembly includes a second long side positioning drive and a second long side positioning member; the output end of the second long side positioning drive is connected to the second long side positioning member, which drives the second long side positioning member to position the long side of another component to be welded in the product.

[0016] The present application limits and positions the parts to be welded of the product carried by the carrying part respectively through the cooperation of the upper positioning part and the side positioning part, so that the parts to be welded of the product are finally accurately positioned, so that the parts to be welded of the product are stable and their welding positions are determined, thereby ensuring the subsequent welding quality of the product and the quality of the finished product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 Schematic diagram of the structure of the fixture in this embodiment;

[0019] Figure 2 is another structural schematic diagram of the fixture in this embodiment;

[0020] Figure 3 It is a structural schematic diagram of the bearing portion and the side positioning portion in this embodiment;

[0021] Figure 4 Another structural schematic diagram of the bearing portion and the side positioning portion in this embodiment;

[0022] Figure 5 In this embodiment Figure 4 A magnified view of part A;

[0023] Figure 6 In this embodiment Figure 5 A magnified view of part B;

[0024] Figure 7 Schematic diagram of the structure of the upper positioning part in this embodiment;

[0025] Figure 8 This is another structural schematic diagram of the upper positioning portion in this embodiment;

[0026] Fig. 9 In this embodiment Figure 8 Enlarged view of part C;

[0027] Fig.10 In this embodiment Figure 3 Enlarged view of part D in .

[0028] Description of reference numerals:

[0029] 1. Bearing part; 11. Bearing body; 111. Bearing position; 112. Avoidance position; 113. Sensing position; 12. Long side reference member; 21. Upper positioning drive assembly; 211. First upper positioning drive member; 212. Second upper positioning drive member; 22. Upper positioning assembly; 221. Upper pressure plate; 222. Front pressure block; 223. Rear pressure block; 224. End cover pressure block; 23. Upper positioning assembly; 231. Upper positioning slide plate; 232. Sliding support plate; 233. Sliding limit member; 24. Upper guide member; 241. Guide column; 242. Connecting block; 25. Upper limit member; 3. Side positioning part; 3 1. Short side positioning assembly; 311. Short side positioning reference member; 3111. First positioning reference step; 312. Short side positioning drive member; 313. Short side positioning member; 3131. Second positioning reference step; 32. First long side positioning assembly; 321. First long side positioning drive member; 322. First long side positioning member; 323. First long side positioning sliding member; 3231. Long side positioning slide plate; 3232. Long side positioning sliding plate; 33. Second long side positioning assembly; 331. Second long side positioning drive member; 332. Second long side positioning member; 3321. Welding hole position; 34. Clamping limit member. DETAILED DESCRIPTION

[0030] The following will disclose multiple embodiments of the present invention with drawings. For the purpose of clear description, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present invention. That is, in some embodiments of the present invention, these practical details are not necessary. In addition, for the purpose of simplifying the drawings, some conventional structures and components will be depicted in a simple schematic manner in the drawings.

[0031] It should be noted that all directional indications such as up, down, left, right, front, back, etc. in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0032] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0033] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings:

[0034] Reference Figure 1 and Figure 2 , Figure 1 Schematic diagram of the structure of the fixture in this embodiment. Figure 2 Another structural schematic diagram of the fixture in this embodiment. The fixture in this embodiment includes a bearing portion 1, an upper positioning portion 2, and a side positioning portion 3. The bearing portion 1 is used to bear the product. The upper positioning portion 2 is located above the bearing portion 1, and is used to perform upper limit positioning and upper positioning on the parts to be welded in the product. The side positioning portion 3 is located on the side of the bearing portion 1, and is used to perform side limit positioning and side positioning on the parts to be welded in the product.

[0035] The upper positioning part 2 and the side positioning part 3 cooperate to limit and position the parts to be welded of the product carried by the bearing part 1, and finally the parts to be welded of the product are accurately positioned, so that the parts to be welded of the product are stable, and the welding position is determined, thereby ensuring the subsequent welding quality and finished product quality of the product. The product in this embodiment is a battery, and the battery has a shell and an end cover. The shell and the end cover are two parts to be welded of the battery. The end cover is arranged at the opening of the shell, and then transferred to the bearing part 1 of the jig for carrying, and then positioned by the upper positioning part 2 and the side positioning part 3, and then transferred to the subsequent welding process following the jig, for example, transferred to the process where the laser welding machine is located, and the laser welding machine welds the joint between the shell and the end cover.

[0036] Continue to refer to Figures 3 to 5 , Figure 3 Schematic diagram of the structure of the bearing part and the side positioning part in this embodiment. Figure 4 is another structural schematic diagram of the bearing portion and the side positioning portion in this embodiment, Figure 5 In this embodiment Figure 4. Further, the bearing part 1 includes a bearing body 11. The bearing body 11 has a bearing position 111 and an avoidance position 112. The bearing position 111 is arranged along the periphery of the avoidance position 112, the bearing position 111 is used for bearing support of the product, and the avoidance position 112 is used for contact avoidance of the product. By setting the avoidance position 112, the contact area when the bearing position 111 bears the battery shell is reduced, thereby avoiding the problem of unevenness during bearing support caused by the uneven surface of the battery shell. Specifically, the bearing part 1 also carries a bearing frame 13. The bearing frame 13 includes a bottom plate 131, a top plate 132 and two vertical plates 133. The lower ends of the two vertical plates 133 are respectively arranged vertically on the upper surface of the bottom plate 131, and are respectively close to the opposite side edges of the bottom plate 131, the two vertical plates 133 are opposite, and the top plate 132 is arranged at the upper ends of the two vertical plates 133, and the top plate 132 is opposite to the bottom plate 131. The carrier frame 13 is formed into a frame structure by the bottom plate 131, the top plate 132 and the two vertical plates 133, and a rectangular space is formed between the three. The bottom plate 131 and the top plate 132 in this embodiment are rectangular plates, and the vertical plate 133 is a rectangular plate. The carrier body 11 is arranged on the upper surface of the top plate 132 and is adjacent to the side of the top plate 132. Preferably, the carrier body 11 is flush with the side of the top plate 132. The middle part of the surface of the carrier body 11 is recessed to form an avoidance position 112, so that the carrier body 11 is convex on the periphery of the recess to form a bearing position 111. The shape and size of the bearing position 111 are adapted to the battery shell. The bearing position 111 in this embodiment is approximately a rectangular body. When the battery shell is placed on the carrier body 11, the surface of the shell is supported on the bearing position 111. It is understandable that the surface of the shell cannot be guaranteed to be completely smooth, and it has a certain concave-convex shape. The bearing position 111 in this embodiment only contacts the periphery of the shell when bearing, thereby reducing the contact area with the shell surface, and avoiding the uneven bearing caused by the concave-convex surface when the shell is bearing, thereby ensuring the accuracy of the subsequent positioning of the shell. Preferably, the bearing body 11 also includes a sensing position 113. The sensing position 113 is arranged at the avoidance position 112, and is used to sense whether there is a product on the bearing position 111, so as to facilitate the positioning control of the product. In specific applications, the sensing position 113 can be provided with a sensor to sense the presence or absence of a product, such as a photoelectric sensor or a proximity switch.

[0037] Continue to refer to Figure 5 and Figure 6 , Figure 6 In this embodiment Figure 5. Further, a long side reference member 12 is provided on the carrier body 11. The long side reference member 12 is adjacent to the bearing position 111. In this embodiment, the long side reference member 12 is provided on one side of the side of the carrier body 11 adjacent to the top plate 132. The height of the long side reference member 12 is higher than the plane where the bearing position 111 is located, so that a step-shaped reference position is formed between the long side reference member 12 and the bearing position 111. After the shell is carried on the bearing position 111, the long side of the shell is directly opposite to the long side reference member 12, so that the long side of the shell can be positioned with the long side reference member 12 as a reference. At this time, the end cover of the battery is placed on the long side reference member 12, and the end cover is carried by the long side reference member 12. The step height of the long side reference member 12 and the bearing position 111 is adapted to the height difference between the shell and the end cover. The long side reference member 12 in this embodiment is two steps formed by convexity on the side wall of the carrier body 11, and the two steps respectively carry the two ends of the end cover.

[0038] Continue to refer to Figure 1 , Figure 2 , Figure 7 , Figure 8 and Fig. 9 , Figure 7 Schematic diagram of the structure of the upper positioning part in this embodiment, Figure 8 is another structural schematic diagram of the upper positioning part in this embodiment, Fig. 9 In this embodiment Figure 8 . Furthermore, the upper positioning part 2 includes an upper positioning drive component 21 and an upper positioning component 22. The output end of the upper positioning drive component 21 is connected to the upper positioning component 22, which drives the upper positioning component 22 to approach or move away from the product, and the upper positioning component 22 limits or positions the surface of the part to be welded of the product. The upper positioning component 22 is used to press and position the battery shell and the end cover, and can assist in limiting the battery shell to meet the side positioning requirements of the shell.

[0039] Specifically, the upper positioning portion 2 also includes an upper positioning sliding member 23. The upper positioning sliding member 23 includes an upper positioning slide plate 231 and a sliding support plate 232. The lower ends of the two sliding support plates 232 are respectively vertically arranged on the upper surface of the top plate 132, and the two sliding support plates 232 are parallel and respectively adjacent to the two vertical plates 133. In this embodiment, the sliding support plates 232 are parallel to the vertical plates 133, and the bearing body 11 is located between the two sliding support plates 232. The upper positioning slide plate 231 is slidably connected to the upper ends of the two sliding support plates 232 through the cooperation of the slider and the slide rail, and the upper positioning slide plate 231 is located above the bearing body 11. Preferably, the upper positioning sliding member 23 also includes a sliding limiter 233, which is arranged on the surface of the top plate 132 and is located on the side of the upper positioning slide plate 231 away from the bearing body 11. The sliding limiter 233 is used to limit the sliding stroke of the upper positioning slide plate 231. The sliding limiter 233 in this embodiment can be formed by the cooperation of a support frame and a limit block or a limiter.

[0040] The upper positioning drive assembly 21 includes a first upper positioning drive member 211 and a second upper positioning drive member 212. The driving end of the first upper positioning drive member 211 is connected to the upper positioning slide member 23. The second upper positioning drive member 212 is arranged on the upper positioning slide member 23, and its output end is connected to the upper positioning assembly 22. The first upper positioning drive member 211 drives the upper positioning slide member 23 to move linearly in a direction parallel to the carrier body 11, thereby driving the second upper positioning drive member 212 and the upper positioning assembly 22 to move synchronously, and the second upper positioning drive member 212 drives the upper positioning assembly 22 to move linearly in a direction perpendicular to the carrier body 11, thereby driving the upper positioning assembly 22 to move synchronously. In this way, through the cooperative driving of the first upper positioning drive member 211 and the second upper positioning drive member 212, the upper positioning assembly 22 moves linearly in a direction parallel to the carrier body 11 and perpendicular to the carrier body 11, respectively, so as to limit and position the product carried by the carrying position 111. Specifically, the first upper positioning driver 211 is arranged on the upper surface of the top plate 132 and is located between the two sliding support plates 232. The output end of the first upper positioning driver 211 is connected to the lower surface of the upper positioning slide plate 231, and drives the upper positioning slide plate 231 to slide on the sliding support plate 232. The first upper positioning driver 211 in this embodiment can be a cylinder. The second upper positioning driver 212 is arranged on the upper positioning slide plate 231, and the upper positioning assembly 22 is located between the second upper positioning driver 212 and the top plate 132. The output end of the second upper positioning driver 212 is connected to the upper positioning assembly 22, and drives the upper positioning assembly 22 to move linearly. The second upper positioning driver 212 can be a cylinder. Preferably, the upper positioning portion 2 also includes an upper guide 24. The upper guide 24 is used to guide the linear movement of the second upper positioning driver 212 driving the upper positioning assembly 22, so that the upper guide 24 moves toward the product carried by the bearing position 111, and the movement is stable. One end of the upper guide member 24 passes through the upper positioning slide 231 and is connected to the upper positioning assembly 22. The upper guide member 24 is parallel to the driving direction of the second upper positioning drive member 212, and in this embodiment, is parallel to the driving rod of the second upper positioning drive member 212. Preferably, the upper guide member 24 includes two guide posts 241 and a connecting block 242. The two guide posts 241 are arranged side by side, and the two guide posts 241 are vertically penetrated in the upper positioning slide 231 and are slidably connected with the upper positioning slide 231. The lower ends of the two guide posts 241 are connected to the upper positioning assembly 22, and the upper ends of the two guide posts 241 are connected through the connecting block 242. Preferably, the number of the upper guide members 24 is two, and the two upper guide members 24 are respectively located on the opposite sides of the second upper positioning drive member 212. Preferably, the upper positioning portion 2 also includes an upper limit member 25, which is used to limit the driving stroke of the second upper positioning drive member 212 to avoid excessive driving of the second upper positioning drive member 212 and damage to the product.The upper limit positioning member 25 is arranged on the connecting block 242, and its limiting end face is facing the upward positioning slide plate 231. In this embodiment, the support frame can cooperate with the limiting block or the limiter, which moves with the connecting block 242. When the upper limit positioning member 25 abuts against the surface of the upper positioning slide plate 231, the second upper positioning driving member 212 is driven to limit.

[0041] The upper positioning assembly 22 includes an upper pressing plate 221, a front pressing block 222 and a rear pressing block 223. The upper pressing plate 221 is parallel to the bearing body 11, and its upper surface is connected to the output end of the second upper positioning drive member 212 and the lower end of the guide column 241. The front pressing block 222 and the rear pressing block 223 are respectively arranged on the lower surface of the upper pressing plate 221, wherein the front pressing block 222 is located close to the side of the bearing body 11 where the long side reference member 12 is provided. The surfaces of the front pressing block 222 and the rear pressing block 223 are flush. Preferably, the upper positioning assembly 22 also includes an end cover pressing block 224. The end cover pressing block 224 is arranged on the upper pressing plate 221 and is adjacent to the front pressing block 222. The height of the end cover pressing block 224 is greater than the height of the front pressing block 222, so that a step is formed between the front pressing block 222 and the end cover pressing block 224. When the second upper positioning drive member 212 drives the upper positioning assembly 22 to limit or position the battery on the bearing position 111, the front pressure block 222 and the rear pressure block 223 cooperate with the bearing position 111 to press and position or fit and limit the battery shell, and the end cover pressure block 224 faces the long side reference member 12, and the two cooperate with each other to press and position or fit and limit the end cover of the battery. In addition, the step formed between the front pressure block 222 and the end cover pressure block 224 can also be used as the positioning reference of the long side of the shell together with the long side reference member 12. The height of the step formed between the front pressure block 222 and the end cover pressure block 224 is adapted to the height difference between the shell and the end cover.

[0042] Continue to refer to Figure 3 , Figure 4 and Fig.10 , Fig.10 In this embodiment Figure 3 In the enlarged view of the D part in the figure, further, the side positioning part 3 includes a short side positioning component 31. The short side positioning component 31 is arranged on one side of the bearing part 1 and faces the short side of the product. The short side positioning component 31 is used to perform side limiting and side positioning on the short sides of the parts to be welded in the product. Preferably, the short side positioning component 31 includes a short side positioning reference member 311, a short side positioning driving member 312 and a short side positioning member 313. The short side positioning reference member 311 and the short side positioning member 313 are respectively arranged on two opposite sides of the bearing part 1 and face the short sides of the product respectively. The driving end of the short side positioning driving member 312 is connected to the short side positioning member 313, which drives the short side positioning member 313 to limit or position the short side of the parts to be welded in the product based on the short side positioning reference member 311.

[0043] Specifically, the short side positioning reference member 311 is arranged on the surface of the top plate 132 and is located on one side of the bearing body 11. When the shell is carried on the bearing position 111, the short side positioning reference member 311 is opposite to the short side of the battery shell. Preferably, there are two short side positioning reference members 311 arranged side by side. One of the short side positioning reference members 311 is opposite to the battery shell, which can be used as the positioning reference of the shell; the other short side positioning reference member 311 has a first positioning reference step 3111, which is opposite to the shell and the end cover at the same time, and can be used as the positioning reference of the end cover and the shell. The short side positioning reference member 311 in this embodiment can adopt a reference block, and the first positioning reference step 3111 is an adaptive step formed on the surface of the reference block corresponding to the height difference between the shell and the end cover.

[0044] The short side positioning driving member 312 is disposed on the surface of the top plate 132 and is located on the other side of the bearing body 11. Its output end is connected to the short side positioning member 313, and the short side positioning member 313 is directly opposite to the short side positioning reference member 311. The short side positioning driving member 312 drives the short side positioning member 313 to move linearly along the direction directly opposite to the short side positioning reference member 311, so that the short side positioning member 313 cooperates with the short side positioning reference member 311 to press and position or limit the short side of the shell. The short side positioning member 313 in this embodiment can be U-shaped, and its two ends are respectively opposite to the two short side positioning reference members 311. Preferably, one end of the short side positioning member 313 is opposite to the short side positioning reference member 311 provided with a first positioning reference step 3111, and the end of the short side positioning member 313 has a second positioning reference step 3131, and the second positioning reference step 3131 is opposite to the first positioning reference step 3111. The structure of the second positioning reference step 3131 is consistent with the first positioning reference step 3111, and the two cooperate with the height difference between the shell and the end cover to position the shell and the end cover respectively.

[0045] Re-reference Figure 3 , Figure 4 and Fig.10, further, the side positioning part 3 also includes a first long side positioning component 32. The first long side positioning component 32 is arranged on one side of the bearing part 1 and faces one of the components to be welded in the product. The first long side positioning component 332 is used to position the long side of one of the components to be welded in the product. In this embodiment, one of the components to be welded is the shell of the battery. The first long side positioning component 32 is arranged on the surface of the bottom plate 131, and is located in the space formed by the bottom plate 131, the top plate 132 and the two vertical plates 133. The first long side positioning component 32 includes a first long side positioning driver 321 and a first long side positioning component 322. The output end of the first long side positioning driver 321 is connected to the first long side positioning component 322, which drives the first long side positioning component 322 to position the long side of one of the components to be welded in the product. Specifically, the first long side positioning component 32 also includes a first long side positioning sliding member 323. The first long side positioning sliding member 323 includes a long side positioning slide plate 3231 and two long side positioning slide plates 3232. The two long side positioning sliding plates 3232 are respectively arranged perpendicularly on the bottom plate 131, the two long side positioning sliding plates 3232 are directly opposite, and the two long side positioning sliding plates 3232 are respectively perpendicular to the bearing body 11 and are located on the side of the bearing body 11 away from the long side reference member 12. The long side positioning slide plate 3231 is slidably connected to the two long side positioning slide plates 3232 through the cooperation of the slider and the slide rail. The first long side positioning driving member 321 is arranged on the bottom plate 131 and is located between the two long side positioning sliding plates 3232. The output end of the first long side positioning driving member 321 is connected to the long side positioning slide plate 3231, which drives the long side positioning slide plate 3231 to move linearly along the direction perpendicular to the bearing body 11. The first long side positioning driving member 321 in this embodiment is a combination of a motor and a screw pair, which uses the motor as a driving source and uses the screw transmission to drive the long side positioning slide plate 3231 to move linearly along the direction perpendicular to the bearing body 11. Preferably, the surface of the long side positioning slide plate 3231 is flush with the surface of the bearing position 111 of the bearing body 11. The first long side positioning member 322 is arranged on the surface of the long side positioning slide plate 3231, which is directly opposite to the upper part of the bearing body 11. The long side positioning slide plate 3231 moves linearly, driving the first long side positioning member 322 to move linearly. The first long side positioning member 322 in this embodiment is a combination of a bracket and a positioning block, and the positioning block is adapted to the long side of the shell to facilitate positioning of the shell. When the shell is carried on the bearing position 111, the first long side positioning member 322 moves linearly toward the bearing shell on the bearing position 111, and clamps and positions the shell with the long side reference member 12 as a reference.

[0046] Re-reference Figure 3 , Figure 4 and Fig.10Furthermore, the side positioning part 3 also includes a second long side positioning component 33. The second long side positioning component 33 is arranged on a side of the bearing part 1 away from the first long side positioning component 32, and faces another component to be welded in the product. The second long side positioning component 33 is used to position the long side of another component to be welded in the product. In this embodiment, the other component to be welded is the end cover of the battery. The second long side positioning component 33 includes a second long side positioning driver 331 and a second long side positioning member 332. The output end of the second long side positioning driver 331 is connected to the second long side positioning member 332, which drives the second long side positioning member 332 to position the long side of another component to be welded in the product. The second long side positioning driver 331 is arranged on the bottom plate 131, and is close to the side of the bearing body 11 having the long side reference member 12. The second long side positioning member 332 is directly opposite to the first long side positioning member 322. The first long side positioning drive member 321 first drives the first long side positioning member 322 to cooperate with the long side reference member 12 to clamp and position the shell, and then the second long side positioning drive member 331 drives the first long side positioning member 322 to move toward the end cover, so that the end cover is clamped and positioned with the shell as the reference point. The second long side positioning member 332 in this example reserves a welding hole 3321, so that the junction between the shell and the end cover is exposed, which is convenient for subsequent laser welding. Preferably, the second long side positioning assembly 33 also includes a second long side positioning sliding member 333. The second long side positioning member 332 positions the end cover in a sliding movement manner through the second long side positioning sliding member 333 to ensure the stability of movement. The structure and actuation principle of the second long side positioning sliding member 333 are consistent with the structure and actuation principle of the first long side positioning sliding member 323, which will not be repeated here.

[0047] Preferably, the side plate positioning part 3 further includes a clamping limiter 34. The clamping limiter 34 is arranged on the second long side positioning member 332 or the first long side positioning member 322, and is used to limit the distance between the second long side positioning member 332 and the first long side positioning member 322, so as to avoid excessive clamping between the second long side positioning member 332 and the first long side positioning member 322, thereby causing the end cover to sink into the shell. The clamping limiter 34 in this embodiment can be a limiter rod with one end vertically arranged on the second long side positioning member 332 or the first long side positioning member 322, and the other end of the limiter rod is directly opposite to the first long side positioning member 322 or the other end is directly opposite to the second long side positioning member 332.

[0048] The overall positioning process of the battery shell and end cover by the fixture in this embodiment is as follows: In the first step, the first upper positioning drive 211 drives the upper positioning assembly 22 to move in a direction away from the carrier body 11, so that the carrier body 11 is exposed. In the second step, an external manipulator grabs the shell equipped with the end cover and moves it to the bearing position 111 of the carrier body 11. In the third step, the first upper positioning drive 211 drives the upper positioning assembly 22 to move directly above the carrier body 11, so that the upper positioning assembly 22 is directly opposite to the bearing position 111 and the shell and end cover carried by the long side reference member 12. In the fourth step, the second upper positioning drive 212 drives the upper positioning assembly 22 to move downward and makes the front pressure block 222 and the rear pressure block 223 fit the surface of the shell, and the end cover pressure block 224 fits the surface of the end cover, so as to limit the shell and the end cover without pressing down, so that the shell and the end cover are in a movable state. In the fifth step, the short side positioning driver 312 drives the short side positioning member 313 to position the short sides of the shell and the end cover respectively with the short side positioning reference member 311 as the reference, and then the short side positioning member 313 and the short side positioning reference member 311 are in a pressed and pressure-free state, which can be achieved by the cylinder first driving and then releasing the cylinder, so that the shell and the end cover are in a movable state. In the sixth step, the first long side positioning driver 321 drives the first long side positioning member 322 to press and position the shell with the long side reference member 12 and the end cover pressing block 224 as the reference. In the seventh step, the second long side positioning driver 331 drives the second long side positioning member 332 to position the end cover with the shell as the reference, and the clamping limit member 34 limits the positioning of the second long side positioning member 332 to avoid excessive movement. In the eighth step, the leakage state of the short side positioning drive member 312 disappears, so that the short side positioning drive member 312 provides driving force again to press the shell and the end cover, and then the second upper positioning drive member 212 provides pressure again to press the shell and the end cover to complete the entire positioning of the shell and the end cover.

[0049] In summary, the fixture in this embodiment can limit and position the parts to be welded of the product carried by the carrying part through the cooperation of the upper positioning part and the side positioning part, so that the parts to be welded of the product are finally accurately positioned, so that the parts to be welded of the product are stable and their welding positions are determined, thereby ensuring the subsequent welding quality of the product and the quality of the finished product.

[0050] The above is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A fixture, characterized in that: include: A load-bearing portion (1) used for bearing a product; the load-bearing portion (1) comprises a load-bearing body (11); the load-bearing body (11) has a load-bearing position (111) and an avoidance position (112); the load-bearing position (111) is arranged along the periphery of the avoidance position (112); the load-bearing position (111) is used for bearing and supporting the product, and the avoidance position (112) is used for contact and avoidance with the product; An upper positioning portion (2) is located above the bearing portion (1) and is used to perform upper limit positioning and upper positioning on the parts to be welded in the product; the upper positioning portion (2) comprises an upper positioning drive component (21) and an upper positioning component (22); an output end of the upper positioning drive component (21) is connected to the upper positioning component (22) and drives the upper positioning component (22) to move closer to or farther from the product, and the upper positioning component (22) limits or positions the surface of the parts to be welded in the product; and A side positioning portion (3) is located on the side of the bearing portion (1) and is used to perform side limiting and side positioning on the components to be welded of the product; the side positioning portion (3) comprises a short side positioning component (31) and a first long side positioning component (32); the short side positioning component (31) is arranged on one side of the bearing portion (1) and faces the short side of the product; the short side positioning component (31) is used to perform side limiting and side positioning on the short side of the components to be welded in the product; the first long side positioning component (32) is arranged on one side of the bearing portion (1) and faces one of the components to be welded in the product; the first long side positioning component (32) is used to position the long side of one of the components to be welded in the product.

2. The fixture according to claim 1, characterized in that: The side edge positioning portion (3) further comprises a second long edge positioning component (33); the second long edge positioning component (33) is arranged on a side of the bearing portion (1) away from the first long edge positioning component (32) and faces another component to be welded in the product; the second long edge positioning component (33) is used to position the long edge of another component to be welded in the product.

3. The fixture according to claim 1, characterized in that: A long side reference piece (12) is provided on the bearing body (11); the long side reference piece (12) is adjacent to the bearing position (111).

4. The fixture according to any one of claims 1-2, characterized in that: The short side positioning assembly (31) comprises a short side positioning reference member (311), a short side positioning driving member (312) and a short side positioning member (313); the short side positioning reference member (311) and the short side positioning member (313) are respectively arranged on two opposite sides of the bearing portion (1) and respectively face the short side of the product; the driving end of the short side positioning driving member (312) is connected to the short side positioning member (313), and drives the short side positioning member (313) to limit or position the short side of the component to be welded in the product with the short side positioning reference member (311) as a reference.

5. The fixture according to any one of claims 1-2, characterized in that: The first long side positioning component (32) comprises a first long side positioning driving component (321) and a first long side positioning component (322); an output end of the first long side positioning driving component (321) is connected to the first long side positioning component (322), and drives the first long side positioning component (322) to position the long side of one of the components to be welded in the product.

6. The fixture according to claim 2, characterized in that: The second long side positioning component (33) comprises a second long side positioning driving member (331) and a second long side positioning member (332); the output end of the second long side positioning driving member (331) is connected to the second long side positioning member (332), and drives the second long side positioning member (332) to position the long side of another component to be welded in the product.

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