Friction stir welding tool for new energy automobile battery shell

Abstract

The utility model discloses a friction stir welding tool for a new energy automobile battery case. The friction stir welding tool comprises a base. A battery shell supporting block, two sets of edge beam jacking assemblies symmetrically distributed on the left side and the right side of the battery shell supporting block and a middle beam jacking assembly located above the battery shell supporting block are arranged at the upper end of the base. A first end limiting block assembly and a first side pressing assembly are arranged on the left side and the right side of the battery shell supporting block, and a second end limiting block assembly and a second side pressing assembly which are distributed front and back are arranged at the upper end of the battery shell supporting block or on the front side and the rear side of the battery shell supporting block; each group of boundary beam jacking assembly comprises a plurality of overturning pressing arm assemblies; the overturning pressing arm assembly comprises a pressing arm driving piece, an L-like overturning pressing arm and a boundary beam pressing block connected with the front end of the overturning pressing arm. The rear end of the overturning pressing arm is hinged to the moving end of the pressing arm driving piece. The upper end and the lower end of the rotating arm are hinged to the overturning pressing arm and the pressing arm driving piece respectively. According to the utility model, the positioning and fastening operation in the friction welding operation process of the battery shell can be realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to new energy automobile battery shell's welding technical field, especially a new energy automobile battery shell's friction stir welding frock. BACKGROUND

[0002] With the high -speed development of new energy electric automobile industry, the battery shell as new energy development very important one link and day by day is valued, safety is valued by people more and more, the battery shell usually has multiple section bar splicing and becomes, and the friction stir welding is currently favored by aerospace, shipbuilding, rail transit, electronic power and other industries and manufacturing, provides better technical solution for aluminum, magnesium, copper, titanium, steel and other metal materials, so friction stir welding working as a new type of welding technology, its principle is to use the high -speed rotating stir head to stir the welding material, form stable friction heat to make the material partially melt, and then use the high -speed rotation of the stir head to uniformly stir the liquid material, and finally form a complete weld. The emergence of this technology has brought major changes to the connection technology of non-ferrous metals such as aluminum alloy.

[0003] As shown in Figure 1 , it is a new energy automobile battery shell, which is assembled and welded by a left beam profile A1, an intermediate beam profile A2 and a right beam profile A3.

[0004] At present, in the welding process of the battery shell structure as shown in Figure 1 , a fastening tool is needed to position and fasten the shell component pieces (the left beam profile A1, the intermediate beam profile A2 and the right beam profile A3), to ensure that the multiple shell component pieces are spliced and formed, and then the friction stir welding machine is used to weld the spliced part between the shell component pieces. The existing fastening tool adopts a screw rod fastening method, that is, a plurality of screw rod fixing blocks are arranged in different directions of the spliced and formed battery shell body, a screw rod is threadedly connected to each screw rod fixing block, and the screw rod is manually tightened by the operator to tightly abut against the outer wall of the shell component piece from different directions. The fastening effect is achieved by cooperation of the fastening screws in different directions to ensure that the position of the shell component piece cannot be moved during the friction stir welding. In the above-mentioned manner, the operator needs to manually tighten the screw rod, which is low in efficiency. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a new energy automobile battery shell's friction stir welding frock, and solves the technical problem of low efficiency caused by manual tightening of the screw rod by the operator in the existing fastening tool. The utility model has simple structure and lower cost.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] The application discloses a new energy automobile battery shell friction stir welding tool, which comprises a base, the upper end of the base is provided with a battery shell supporting block, two groups of side beam top pressing assemblies symmetrically distributed on the left and right sides of the battery shell supporting block and a middle beam top pressing assembly arranged above the battery shell supporting block.

[0008] The left and right sides of the battery shell supporting block are further provided with an end limiting block assembly one and a side pressing assembly one; the upper end of the battery shell supporting block or the front and back sides of the battery shell supporting block is provided with an end limiting block assembly two and a side pressing assembly two which are distributed in front and back directions.

[0009] Each group of side beam top pressing assemblies comprises a plurality of turnover pressing arm assemblies; the turnover pressing arm assembly comprises a pressing arm driving part, a turnover pressing arm in the shape of L and a side beam pressing block; the moving end of the pressing arm driving part extends upward in the longitudinal direction; the rear end of the turnover pressing arm is hinged to the moving end of the pressing arm driving part, and the side beam pressing block is connected to the front end of the turnover pressing arm; further comprising a rotating arm arranged between the side beam pressing block and the pressing arm driving part, the upper and lower ends of the rotating arm are hinged to the turnover pressing arm and the pressing arm driving part respectively.

[0010] Further, the end limiting block assembly one comprises a plurality of limiting blocks one arranged in front and back directions in sequence with intervals, and the side pressing assembly one comprises a plurality of side pressing parts one arranged in front and back directions in sequence; the end limiting block assembly two comprises a plurality of limiting blocks two arranged in left and right directions in sequence with intervals, and the side pressing assembly two comprises a plurality of side pressing parts two arranged in left and right directions in sequence.

[0011] Further, the front side or the rear side of the turnover pressing arm is further provided with a proximity switch.

[0012] Further, the middle beam top pressing assembly comprises a cross beam, a plurality of top pressing oil cylinders are connected to the cross beam, each top pressing oil cylinder is provided with an oil cylinder rod extending upward in the longitudinal direction, and the lower end of each oil cylinder rod is hinged to a middle top pressing block.

[0013] The middle top pressing block extends laterally, and the front end or the rear end of the middle top pressing block is connected to a limiting rod; the limiting rod extends upward in the longitudinal direction, and the upper end of the limiting rod is slidingly connected to a limiting insertion hole arranged at the lower end of the cross beam.

[0014] Further, the cross beam is connected to the upper end of the base through a cross beam supporting frame one and a cross beam supporting frame two.

[0015] Further, a plurality of jacking roller assemblies are arranged in the battery shell supporting block; each jacking roller assembly comprises a jacking driving part, and at least two jacking rollers are connected to each jacking driving part in a left and right parallel manner.

[0016] Under the drive of the jacking driving part, the jacking roller moves up and down through the groove on the upper end face of the battery shell support block.

[0017] Further, the right side of the battery shell support block is provided with at least two displacement sensors.

[0018] Further, there is a transverse spacing between the limiting block and the battery shell support block and between the side pressing part and the battery shell support block.

[0019] Further, the adjacent two side pressing parts are provided with side rollers for guiding the front and back movement of the battery shell.

[0020] Compared with the prior art, the utility model provides a new energy automobile battery shell's friction stir welding tooling has the following beneficial effects:

[0021] In the utility model, in the operation process of pressing, the side beam top pressing assembly is used for top pressing operation on the left side beam profile and the right side beam profile, and the middle beam top pressing assembly is used for top pressing operation on the middle beam profile, so that fast top pressing operation is realized, and the operation is convenient and efficient.

[0022] Meanwhile, the utility model includes the left and right distributed end limiting block assembly one and side pressing assembly one and the front and back distributed end limiting block assembly two and side pressing assembly two.

[0023] Therefore, the utility model can realize positioning and fastening operation in the friction stir welding operation process of the battery shell, and reduce the displacement risk of the to-be-welded piece in the friction stir welding operation process. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the structural schematic diagram of the battery shell in the utility model.

[0025] Figure 2 It is the front view of the friction stir welding tooling of the new energy automobile battery shell in the utility model.

[0026] Figure 3 It is the welding state schematic diagram (front welding) of the friction stir welding tooling of the new energy automobile battery shell in the utility model.

[0027] Figure 4 It is the welding state schematic diagram (back welding) of the friction stir welding tooling of the new energy automobile battery shell in the utility model.

[0028] Figure 5It is the top view of the friction stir welding tool of the new energy automobile battery shell in the utility model.

[0029] Figure 6 It is the connection structure schematic view of the base and the battery shell supporting block in the utility model.

[0030] Figure 7 It is the structure schematic view of the end limit block assembly one, side pressure assembly one, end limit block assembly two and side pressure assembly two in the utility model.

[0031] Figure 8 It is the connection structure schematic view of the intermediate beam top pressure assembly, cross beam support frame one and cross beam support frame two in the utility model.

[0032] Figure 9 It is the partial enlarged view of B.

[0033] Figure 10 It is the structure schematic view of the jacking roller assembly in the utility model.

[0034] Figure 11 It is the structure schematic view of a group of edge beam top pressure assemblies in the utility model.

[0035] Figure 12 It is the structure schematic view of the turnover pressure arm assembly in the utility model (turnover pressure arm lower pressure state).

[0036] Figure 13 It is the structure schematic view of the turnover pressure arm assembly in the utility model (turnover pressure arm flips open state).

[0037] In the drawing:

[0038] A1-left edge beam profile, A2-intermediate beam profile, A3-right edge beam profile;

[0039] 100-base, 101-battery shell supporting block, 102-left positioning block, 103-intermediate positioning block, 104-right positioning block, 105-oil passage block one, 106-oil passage block two, 107-oil passage block three, 108-oil passage block four, 109-groove opening, 110-support one, 111-support two, 113-support three, 114-support four, 115-oil passage block five, 116-oil passage block six;

[0040] 201-limit block one, 202-side pressure component one, 203-limit block two, 204-side pressure component two;

[0041] 300-side beam top pressing assembly, 301-pressing arm driving part, 302-overturning pressing arm, 303-side beam pressing block, 304-rotation shaft one, 305-pressing block connecting block, 306-oil cylinder seat, 307-rotation arm, 308-sensor connecting block, 309-proximity switch, 310-connector;

[0042] 400-cross beam, 401-cross beam support frame one, 402-cross beam support frame two, 403-oil cylinder rod, 404-rotation shaft two, 405-intermediate top pressing block, 406-connecting plate, 407-limiting rod, 408-limiting hole;

[0043] 501-jacking driving part, 502-bottom connecting plate, 503-pad, 504-jacking roller, 505-top connecting plate;

[0044] 600-lateral roller, 601-lateral roller support, 701-displacement sensor, 800-roller support frame one, 801-front end guide roller. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0046] As shown in Figures 2-12 , the utility model provides a new energy automobile battery shell's friction stir welding tool, can be used in the positioning and tight pressing of left side beam section bar A1, intermediate beam section bar A2 and right side beam section bar A3 in the welding process, forms the battery shell structure as shown in Figure 1 after friction stir welding.

[0047] As shown in Figure 2 , the friction stir welding tool of the new energy automobile battery shell in the embodiment includes base 100, the upper end of base 100 is equipped with battery shell support block 101, two groups of side beam top pressing assemblies are symmetrically distributed on the left and right sides of battery shell support block 101 and intermediate beam top pressing assembly is located above battery shell support block 101.

[0048] In the embodiment, the side beam top pressing assembly is used to realize the pressing of the welding piece, and the pressing and loosening actions are controlled by the electromagnetic valve. Figure 2 、 5As shown, in the embodiment, two groups of side beam top pressing assemblies are symmetrically distributed on the left and right sides of the battery case support block 101; each group of side beam top pressing assemblies includes 8 turnover pressing arm assemblies 300, and the turnover pressing arm assemblies 300 in the left side beam top pressing assembly and the turnover pressing arm assemblies 300 in the right side beam top pressing assembly are symmetrically distributed, as shown in Figure 2 、 4 . Specifically, the structural schematic diagram of the right side beam top pressing assembly (i.e., the side beam top pressing assembly located on the right side in Figure 5 ) is shown in Figure 11 , the right side beam top pressing assembly includes 8 turnover pressing arm assemblies 300 arranged in sequence and spaced apart from front to back; and in the right side beam top pressing assembly, four turnover pressing arm assemblies 300 are arranged on the upper end of the oil passage block three 107, and the other four turnover pressing arm assemblies 300 are arranged on the upper end of the oil passage block four 108.

[0049] Specifically, the structure of the turnover pressing arm assembly 300 is shown in Figure 12 and Figure 13 . Among them, Figure 12 is the turnover pressing arm assembly 300 in the turnover pressing arm pressing state, and Figure 13 is the turnover pressing arm assembly 300 in the turnover pressing arm open state.

[0050] Specifically, as shown in Figure 12 and 13 , the turnover pressing arm assembly 300 includes a pressing arm driving member 301, an L-shaped turnover pressing arm 302, and a side beam pressing block 303; the moving end of the pressing arm driving member 301 extends upward and longitudinally.

[0051] Preferably, the rear end of the turnover pressing arm 302 is hinged to the moving end of the pressing arm driving member 301. In the embodiment, a connecting head 310 is connected to the moving end of the pressing arm driving member 301, and the rear end of the turnover pressing arm 302 is hinged to the connecting head 310, as shown in Figure 12 .

[0052] Preferably, the side beam pressing block 303 is connected to the front end of the turnover pressing arm 302. In the embodiment, the upper end of the beam pressing block 303 is connected to a pressing block connecting block 305, and the upper end of the pressing block connecting block 305 is hinged to the front end of the turnover pressing arm 302, as shown in Figure 12 .

[0053] The turnover pressing arm assembly 300 further includes a rotating arm 307 between the side beam pressing block 303 and the pressing arm driving member 301. The upper end of the rotating arm 307 is hinged to the rear lower end of the turnover pressing arm 302, and the lower end of the rotating arm 307 is hinged to an oil cylinder seat 306. The oil cylinder seat 306 is connected to the pressing arm driving member 301.

[0054] In this embodiment, the tilting pressure arm 302 is L-shaped, and the pressure arm drive component 301 is a linear hydraulic cylinder. The rear end of the tilting pressure arm 302 is hinged to the upper part of the connector 310, while the lower part of the connector 310 is connected to the upper end of the cylinder rod of the linear hydraulic cylinder. Simultaneously, the rotating arm 307 is connected between the aforementioned cylinder rod and the side beam pressure block 303, as shown... Figure 12 , 13 As shown. When the moving end of the pressure arm drive 301 moves downward, it can drive the tilting pressure arm 302 and the rotating arm 307 to tilt and open to one side, ultimately presenting the shape shown. Figure 13 The flip-up pressure arm is shown in the open state. Correspondingly, when the moving end of the pressure arm drive 301 moves upward to reset, it can drive the flip-up pressure arm 302 and the rotating arm 307 to reset and flip to the other side, ultimately presenting the state as shown. Figure 12 The image shows the tilting pressure arm in its depressed state. In this depressed state, the side beam pressure block 303 at the front end of the tilting pressure arm 302 presses downwards, which can press the side beam profile (left beam profile A1 or right beam profile A3) located below the side beam pressure block 303 downwards, as shown. Figure 3 , 4 As shown.

[0055] Preferably, in this embodiment, a proximity switch 309 is further provided on one side of the rotating arm 307, such as... Figure 12 As shown. The position of the rotating arm 307 can be sensed by the proximity switch 309. Specifically, when the flipping pressure arm 302 is pressed down, the proximity switch 309 can sense the rotating arm 307, as shown. Figure 12 As shown, this indicates that the tilting pressure arm 302 has been pressed down to its final position. Conversely, when the tilting pressure arm 302 tilts open, as shown... Figure 13 As shown (proximity switch 309 is not shown in the figure), the rotating arm 307 rotates out of the sensing area of ​​proximity switch 309. At this time, proximity switch 309 can no longer sense the rotating arm 307, indicating that the flipping pressure arm 302 flips open to the correct position.

[0056] In this embodiment, the intermediate beam top-pressing assembly is connected to the upper end of the base 100 via a first crossbeam support frame 401 and a second crossbeam support frame 402, as follows: Figures 2-4 As shown. Specifically, as Figure 8 , 9 As shown, in this embodiment, the intermediate beam pressing assembly includes a crossbeam 400, on which a plurality of pressing cylinders are connected. Each pressing cylinder is provided with a cylinder rod 403 extending vertically, and an intermediate pressing block 405 is hinged to the lower end of each cylinder rod 403. Figure 8 This is a schematic diagram of the connection structure of the intermediate beam top pressure assembly, the crossbeam support frame 1 401, and the crossbeam support frame 2 402.

[0057] The intermediate pressing block 405 extends laterally left and right, and the front end or the rear end of the intermediate pressing block 405 is connected with a limiting rod 407; the limiting rod 407 extends longitudinally upward and downward, and the upper end of the limiting rod 407 is connected with a limiting insertion hole 408 arranged at the lower end of the cross beam 400 in a sliding manner, and the lower end of the limiting rod 407 is connected with the side wall of the intermediate pressing block 405 through the connecting piece 406.

[0058] Under the driving of the pressing oil cylinder, the oil cylinder rod 403 drives the intermediate pressing block 405 and the limiting rod 407 to move downward synchronously.

[0059] Since the upper end of the intermediate pressing block 405 is hinged with the lower end of the oil cylinder rod 403 through the second rotating shaft 404, the intermediate pressing block 405 can swing within a certain range in the left-right direction. When the lower end of the intermediate pressing block 405 abuts against the end face of the intermediate beam profile A2, if the end face of the intermediate beam profile A2 is uneven, at this time, the intermediate pressing block 405 can swing in the left-right direction to adjust the inclination angle of the lower end face of the intermediate pressing block 405, so that the lower end face of the intermediate pressing block 405 is in full contact and abuts against the end face of the intermediate beam profile A2, thereby achieving the purpose of the intermediate pressing block 405 pressing the intermediate beam profile A2 downward better.

[0060] Meanwhile, when the intermediate pressing block 405 swings left and right, the limiting rod 407 connected with the intermediate pressing block 405 also swings left and right, and since the upper end of the limiting rod 407 is inserted into the limiting insertion hole 408, the swinging amplitude of the limiting rod 407 is limited by the aperture of the limiting insertion hole 408, thereby achieving the purpose of controlling the swinging amplitude of the intermediate pressing block 405 left and right, preventing the swinging angle of the intermediate pressing block 405 from being too large.

[0061] The aperture of the limiting insertion hole 408 is larger than the diameter of the limiting rod 407; the aperture of the limiting insertion hole 408 can be adjusted according to actual needs. In the embodiment, the aperture of the limiting insertion hole 408 is about 3mm larger than the diameter of the limiting rod 407.

[0062] As shown in FIG. 1, Figures 2-7 In the embodiment, an assembly for limiting and laterally pressing the left beam profile A1, the intermediate beam profile A2 and the right beam profile A3 is also included.

[0063] As shown in FIG. 1, Figure 5 , 7As shown, the left and right sides of the battery shell support block 101 are also provided with end limiting block assembly one and side pressing assembly one; the upper end of the battery shell support block 101 or the front and rear sides of the battery shell support block 101 are provided with front and rear distributed end limiting block assembly two and side pressing assembly two; the end limiting block assembly one includes a plurality of limiting blocks one 201 arranged in front and back sequence; the side pressing assembly one includes a plurality of side pressing components one 202 arranged in front and back sequence; the end limiting block assembly two includes a plurality of limiting blocks two 203 arranged in left and right sequence; the side pressing assembly two includes a plurality of side pressing components two 204 arranged in left and right sequence.

[0064] Specifically, as shown in the drawings, Figure 5 , 7 In this embodiment, the end limiting block assembly one is located on the left side of the battery shell support block 101 and includes six limiting blocks one 201, respectively located on the upper end of the two brackets one 110; the side pressing assembly one is located on the right side of the battery shell support block 101 and includes six side pressing components one 202, respectively located on the upper end of the two brackets two 111, and an oil path block five 115 is further arranged between the side pressing component one 202 and the bracket two 111. In this embodiment, the side pressing component one 202 is a linear oil cylinder, the oil cylinder rod of which extends to the left side, and in the operation process, the combined components of the left beam profile A1, the middle beam profile A2 and the right beam profile A3 can be tightly pressed towards the limiting block one 201.

[0065] Specifically, in this embodiment, the end limiting block assembly two and the side pressing assembly two are located on the upper end of the battery shell support block 101 and are distributed in front and back. As shown in the drawings, Figure 7 The front end limiting block assembly two includes four limiting blocks two 203, and the rear side pressing assembly two includes four side pressing components two 204. In this embodiment, the side pressing component two 204 is also a linear oil cylinder, the oil cylinder rod of which extends to the front side, and the lower end of the side pressing component two 204 is further provided with an oil path block six 116. As a preferred solution, the end limiting block assembly two and the side pressing assembly two can also be arranged on the front and rear sides of the battery shell support block 101, and the two are supported at a certain height by the brackets connected with the base.

[0066] At the same time, as shown in the drawings, Figure 5 There is a certain transverse spacing between the limiting block one 201 and the battery shell support block 101, and there is a certain transverse spacing between the side pressing component one 202 and the battery shell support block 101.

[0067] In operation, the left beam profile A1, the middle beam profile A2 and the right beam profile A3 are placed between the end limiting block assembly one, the side pressing assembly one, the end limiting block assembly two and the side pressing assembly two. Then, the side pressing assembly one 202 and the side pressing assembly two 204 are started to push the combination of the left beam profile A1, the middle beam profile A2 and the right beam profile A3 as a whole towards the front limiting block two 203 and the left limiting block one 201, locking the position of the combination in the front and back and left and right directions so that the combination cannot move in the front and back and left and right directions during the friction welding. Then, the top pressing oil cylinder is started to press the middle beam profile A2 down using the middle top pressing block 405, and the left beam profile A1 and the right beam profile A3 are pressed down using the two sets of side beam top pressing assemblies. Then, the friction welding equipment is started to perform friction welding on the weld area.

[0068] Preferably, the right side of the battery shell support block 101 is provided with at least two front and back distributed displacement sensors 701. In the embodiment, two displacement sensors 701 are provided on the right side of the battery shell support block 101. The displacement sensors 701 are laser displacement sensors, and the two displacement sensors 701 are arranged front and back, one near the side pressing assembly two 204 on the rear side, and one near the front limiting block two 203 on the front side, as shown in Figure 5 The two displacement sensors 701 are aligned in the direction of the battery shell support block 101.

[0069] Preferably, some guide rollers are also added to the tooling to assist the movement of the battery shell during operation. Specifically, the guide rollers include a plurality of lifting rollers 504 arranged in the front and back directions on the upper end of the battery shell support block 101, a plurality of lateral rollers 600 arranged on the right side of the battery shell support block 101, and a front end guide roller 801 arranged on the front side of the battery shell support block 101.

[0070] Specifically, as shown in Figure 5 , 10 The battery shell support block 101 is provided with a plurality of lifting roller assemblies; as shown in Figure 10As shown, each jacking roller assembly comprises a jacking driving part 501, and at least two jacking rollers 504 are connected to each jacking driving part 501. In this embodiment, the battery shell support block 101 is a hollow support structure, and the jacking driving part 501 is a jacking cylinder, the upper end of which is connected to the lower end of the top plate of the battery shell support block 101 through a top connecting plate 505, the piston rod of the jacking cylinder extends downward and is connected to a bottom connecting plate 502, and the upper end of the bottom connecting plate 502 is connected to two pads 503, and the upper end of each pad 503 is connected to a jacking roller 504. In the same jacking roller assembly, the two jacking rollers 504 are distributed side by side, and when the jacking driving part 501 is started, it will drive the bottom connecting plate 502 to move up and down, thereby driving the two pads 503 to move up and down synchronously, and finally driving the two jacking rollers 504 to move up and down.

[0071] When the bottom connecting plate 502 moves upward, since each jacking roller 504 is provided with a groove 109 above, the jacking roller 504 will protrude above the upper end surface of the battery shell support block 101 after being jacked upward, and when the bottom connecting plate 502 moves downward to reset, the two jacking rollers 504 will move downward synchronously to below the upper end surface of the battery shell support block 101.

[0072] As shown, Figure 5 In this embodiment, there are a total of five jacking roller assemblies, a total of ten jacking rollers 504 and ten grooves 109.

[0073] When the battery shell is completed as shown in Figure 1 After the friction welding, the side pressure part one 202 and the side pressure part two 204 no longer press the battery shell, the five jacking roller assemblies are started at the same time, the bottom connecting plate 502 moves upward, and the multiple jacking rollers 504 rise at the same time, jacking the battery shell above upward, and then translating it out of the friction welding tool from back to front.

[0074] Preferably, in this embodiment, six front end guide rollers 801 are arranged near the front side, three rollers for a group, and two groups are distributed in front and back. One group is located on the front side of the upper end of the battery shell support block 101 and is spaced apart from the left to the right with the limiting block two 203, and the other group is arranged on the upper end of the roller support frame one 800, and the roller support frame one 800 is arranged on the upper end of the bottom plate 100, as shown in Figure 4 , 5 .

[0075] As shown in Figure 6As shown, on the upper end face of the battery shell support block 101, a left positioning block 102, an intermediate positioning block 103 and a right positioning block 104 are additionally arranged in left-right interval. The upper end face of the left positioning block 102, the upper end face of the intermediate positioning block 103 and the upper end face of the right positioning block 104 are of the same height.

[0076] The use method of the new energy automobile battery shell friction stir welding tool in the embodiment is briefly as follows:

[0077] Step S1: make all the turnover pressure arm assemblies 300 in the two groups of side beam top pressing assemblies on the left and right sides be in the state as shown, that is, each turnover pressure arm 302 is in the turnover open state. Figure 13

[0078] Step S2: place the left side beam profile A1 on the upper end of the left positioning block 102 from top to bottom between the left side beam top pressing assembly and the cross beam 400, place the right side beam profile A3 on the upper end of the right positioning block 104 from top to bottom between the right side beam top pressing assembly and the cross beam 400, and finally place the intermediate beam profile A2 on the upper end of the three front end guide rollers 801 and then push it from front to back, so that the intermediate beam profile A2 is placed on the upper end of the intermediate positioning block 103 and between the left side beam profile A1 and the right side beam profile A3. Through the above steps, the placement state of the left side beam profile A1, the intermediate beam profile A2 and the right side beam profile A3 is as shown. Figure 4

[0079] In the above steps, we can also lift all the lifting rollers 504 to the highest point (the top end of the lifting roller 504 is the same height as the top end of the front end guide roller 801), guide the intermediate beam profile A2 to move backward, and when the intermediate beam profile A2 is moved into position, all the lifting rollers 504 drive the intermediate beam profile A2 to move downward, so that the lower end face of the intermediate beam profile A2 abuts against the upper end face of the intermediate positioning block 103.

[0080] Step S3: start the side pressing component one 202 and the side pressing component two 204, and push the combination of the left side beam profile A1, the intermediate beam profile A2 and the right side beam profile A3 as a whole toward the front limit block two 203 and the left limit block one 201, so as to lock the position of the combination in the front-back and left-right directions.

[0081] Step S4: make all the turnover pressure arm assemblies 300 in the two groups of side beam top pressing assemblies on the left and right sides be in the state as shown, that is, each turnover pressure arm 302 is in the downward pressing state. Figure 12

[0082] At the same time, start the top pressing oil cylinder, and use the intermediate top pressing block 405 to press the intermediate beam profile A2 downward, as shown in the state. Figure 4 Then, start the friction stir welding equipment to perform friction stir welding operation on the weld area.​​​

[0083] By the above steps S1-S4, the friction stir welding operation of the reverse surface weld of the battery shell is completed.

[0084] In the above operation process of friction stir welding of the reverse surface weld of the battery shell, when the combined assembly after splicing of the left beam profile A1, the middle beam profile A2 and the right beam profile A3 is pressed into place by the side pressing component one 202, the distance between the two displacement sensors 701 and the side wall of the above combined assembly can be sensed, the two displacement sensors 701 obtain two sensing data and transmit the sensing data to the control system, which is compared with the pre-stored standard value to analyze and judge whether the width of the combined assembly after splicing and alignment of the left beam profile A1, the middle beam profile A2 and the right beam profile A3 meets the requirements. For example, if the sensed value does not meet the standard value or the difference exceeds the specified range, the size of the welded finished workpiece formed after the friction stir welding operation will not meet the requirements, at which time the control system can give a warning to prompt the operator to check and stop the subsequent operation.

[0085] Step S5: The side pressing component one 202, the side pressing component two 204 and the intermediate pressing block 405 are reset and moved, and all the lifting rollers 504 are lifted to the highest point again to lift the combined assembly after single-sided welding.

[0086] Step S6: Then the combined assembly after single-sided welding is pulled out from the tooling from back to front.

[0087] Step S7: The combined assembly after front welding is flipped by 180 degrees to the right, and then the flipped combined assembly is placed on the upper end of the front guide roller 801 again and is pushed forward to the upper end of the left positioning block 102, the middle positioning block 103 and the right positioning block 104. Through the above steps, the placement state of the combined assembly after single-sided welding is as shown in Figure 3

[0088] Then steps S3-S5 are repeated to complete the friction stir welding operation of the front weld of the battery shell, and finally the battery shell after friction stir welding on both front and back surfaces is pulled out from the rear to the front out of the friction stir welding tooling.

[0089] In this embodiment, the oil cylinder in each assembly is controlled by a solenoid valve, and the air cylinder in the lifting roller assembly is controlled by a mechanical valve. An oil passage is also provided in the base 100.

[0090] ​Using the new energy automobile battery shell stirring friction welding tooling described in the embodiment for welding operation, it can ensure that the left beam profile A1, the middle beam profile A2 and the right beam profile A3 are locked in the correct relative position during assembly positioning welding, thereby improving the welding quality. Secondly, it can also realize the quick pressing positioning of the left beam profile A1, the middle beam profile A2 and the right beam profile A3, which can effectively reduce the operation time of the assembly auxiliary process (such as alignment, positioning and clamping), thereby shortening the production cycle and improving the production efficiency. Thirdly, compared with the screw fastening method, the tooling operation method in the embodiment avoids the heavy physical labor of the operator during the assembly positioning and clamping of the welded part. At the same time, the existence of the jacking roller 504 and the lateral roller 600 further reduces the labor intensity and ensures the safety production.

Claims

1. A new energy automobile battery shell friction stir welding tool, characterized in that: The base (100) is provided with a battery shell supporting block (101), two groups of side beam top pressing assemblies symmetrically distributed on the left and right sides of the battery shell supporting block (101), and a middle beam top pressing assembly above the battery shell supporting block (101); The left and right sides of the battery shell supporting block (101) are further provided with an end limiting block assembly one and a side pressing assembly one; the upper end of the battery shell supporting block (101) or the front and rear sides of the battery shell supporting block (101) are provided with an end limiting block assembly two and a side pressing assembly two which are distributed in front and back; Each group of side beam top pressing assemblies comprises a plurality of turnover pressing arm assemblies; the turnover pressing arm assembly comprises a pressing arm driving part (301), a turnover pressing arm (302) in the shape of L, and a side beam pressing block (303); the moving end of the pressing arm driving part (301) extends upward and longitudinally; the rear end of the turnover pressing arm (302) is hinged to the moving end of the pressing arm driving part (301), and the side beam pressing block (303) is connected to the front end of the turnover pressing arm (302); further comprising a rotating arm (307) between the side beam pressing block (303) and the pressing arm driving part (301), the upper and lower ends of the rotating arm (307) are hinged to the turnover pressing arm (302) and the pressing arm driving part (301) respectively.

2. The new energy vehicle battery shell friction stir welding tooling according to claim 1, characterized in that: The end limiting block assembly one comprises a plurality of limiting blocks one (201) arranged in front and back in sequence with intervals, and the side pressing assembly one comprises a plurality of side pressing components one (202) arranged in front and back in sequence; the end limiting block assembly two comprises a plurality of limiting blocks two (203) arranged in left and right in sequence with intervals, and the side pressing assembly two comprises a plurality of side pressing components two (204) arranged in left and right in sequence.

3. The new energy vehicle battery shell's friction stir welding tooling according to claim 2, characterized in that: The front side or the rear side of the turnover pressing arm (302) is further provided with a proximity switch (309).

4. The stir friction welding tool of the new energy vehicle battery shell according to claim 3, characterized in that: The middle beam top pressing assembly comprises a cross beam (400), a plurality of top pressing oil cylinders are connected to the cross beam (400), each top pressing oil cylinder is provided with an oil cylinder rod (403) extending upward and longitudinally, and the lower end of each oil cylinder rod (403) is hinged to an intermediate top pressing block (405); The intermediate top pressing block (405) extends laterally, and the front end or the rear end of the intermediate top pressing block (405) is connected to a limiting rod (407); the limiting rod (407) extends upward and longitudinally, and the upper end of the limiting rod (407) is slidingly connected to a limiting insertion hole (408) provided at the lower end of the cross beam (400).

5. The new energy vehicle battery shell's friction stir welding tooling according to claim 4, characterized in that: Further comprising a cross beam supporting frame one (401) and a cross beam supporting frame two (402); the cross beam (400) is connected to the upper end of the base (100) through the cross beam supporting frame one (401) and the cross beam supporting frame two (402).

6. The stir friction welding tooling for a new energy vehicle battery shell according to any one of claims 1-5, characterized in that: The battery shell supporting block (101) is further provided with a plurality of top lifting roller assemblies; each top lifting roller assembly comprises a top lifting driving part (501), and each top lifting driving part (501) is connected to at least two top lifting rollers (504) arranged side by side; Under the driving of the top lifting driving part, the top lifting roller (504) moves up and down through the groove opening (109) provided on the upper end surface of the battery shell supporting block (101).

7. The stir friction welding tooling of a new energy vehicle battery shell according to claim 6, characterized in that: The right side of the battery shell supporting block (101) is provided with at least two displacement sensors (701).

8. The stir friction welding tool of a new energy vehicle battery shell according to claim 7, characterized in that: There is a transverse spacing between the limiting block one (201) and the battery shell supporting block (101), and between the side pressing component one (202) and the battery shell supporting block (101).

9. The stir friction welding tooling for a new energy vehicle battery case according to claim 8, characterized in that: Adjacent two side pressing component ones (202) are also provided with side rollers (600) for guiding the front and back movement of the battery shell.

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