Friction welding equipment for battery box body

Abstract

The utility model relates to a battery box friction welding device which comprises a friction welding machine tool and a positioning device installed on a friction welding machine tool equipment table, the positioning device comprises an inner supporting mechanism, a top pressing mechanism, an end positioning mechanism and a side face pushing mechanism, and the inner supporting mechanism comprises a plurality of inner supporting frames arranged side by side; the top pressing mechanism comprises a frame which is transversely arranged and a plurality of pressing blocks which are mounted on the frame and are arranged in rows; the end part positioning mechanisms are arranged at the two ends of the supporting mechanism in a left-right opposite manner, and each end part positioning mechanism comprises an end part positioning seat for positioning the two ends of the battery box body; the side face propelling mechanisms are arranged on the two sides of the inner supporting mechanism in a front-back opposite mode, and each side face propelling mechanism comprises a plurality of propelling blocks arranged side by side. The welding quality of products is guaranteed, the problem of welding deformation is effectively avoided, the procedure of shaping after welding is omitted, and the machining efficiency is directly improved.

Description

Technical Field

[0001] The utility model belongs to the field of battery box processing equipment, and in particular relates to a battery box friction welding device. Background Art

[0002] The main body of the battery box is composed of two bottom plates arranged in parallel and two side plates located on the opposite sides of the two bottom plates (such as Figure 7 During processing, the sides of the two bottom plates need to be welded to the corresponding side plates.

[0003] In the current processing process, manual assembly and positioning are generally adopted, and the two bottom plates and the corresponding side plates are friction welded twice respectively. This is time-consuming and labor-intensive, and the welded products are prone to deformation, which increases the workload of post-weld shaping, directly affecting the processing efficiency and quality of the finished products. Utility Model Content

[0004] The utility model aims to provide a battery box friction welding device to solve the problem of low battery box processing efficiency.

[0005] A battery box friction welding device of the utility model is realized as follows:

[0006] A battery box friction welding device includes a friction welding machine and a positioning device installed on the friction welding machine equipment platform, wherein the positioning device includes

[0007] An internal support mechanism, comprising a plurality of internal support frames arranged side by side, the internal support frames being supported inside the battery box;

[0008] A top pressing mechanism, comprising a horizontally arranged frame and a plurality of pressing blocks mounted on the frame and arranged in a row, the pressing blocks being capable of pressing against the top of the battery box;

[0009] An end positioning mechanism, which is arranged at the two ends of the support mechanism in a left-right relative manner, and includes an end positioning seat for positioning the two ends of the battery box;

[0010] The side propulsion mechanism is arranged on both sides of the inner support mechanism in a front-rear relative manner. The side propulsion mechanism includes a plurality of propulsion blocks arranged side by side, and the propulsion blocks can position the sides of the battery box.

[0011] Furthermore, the positioning device includes a base plate that is detachably mounted on the equipment table, and the inner support mechanism, top pressing mechanism, end positioning mechanism and side propulsion mechanism are respectively mounted on the base plate.

[0012] Furthermore, a pad is provided on the top of the inner support frame;

[0013] Positioning steps are provided on both sides of the inner support frame.

[0014] Furthermore, the frame is a U-shaped frame with an opening facing right, and a clamping cylinder corresponding to a clamping block is provided at the bottom of the upper beam of the U-shaped frame. The clamping cylinder drives the clamping block connected to its piston rod to be clamped on the top of the battery box.

[0015] Furthermore, the top pressing mechanism includes a guide rail arranged transversely and passing through each inner support frame, and a roller that cooperates with the guide rail is provided at the bottom of the frame;

[0016] Guide brackets are provided at both ends of the inner support mechanism, and the frame can pass through the guide brackets.

[0017] Furthermore, there are four end positioning mechanisms, which are arranged in groups of two on both sides of the inner support mechanism in a left-right opposite manner, and the two end positioning mechanisms located at the same end of the inner support mechanism are respectively located on both sides of the top clamping mechanism.

[0018] Furthermore, a pushing cylinder is provided on the end positioning seat, and an arc-striking block is connected to the piston rod of the pushing cylinder. The pushing cylinder can drive the arc-striking block connected thereto to press against the end of the battery box.

[0019] Furthermore, a cylinder mounting seat is provided on the end positioning seat, and the pushing cylinder is hinged on the cylinder mounting seat in a manner that the piston rod faces inward, and the piston rod of the pushing cylinder is connected to a push rod through a hinged connecting rod, and the push rod is connected to the corresponding arc striking block;

[0020] A guide sleeve is provided at the inner end of the cylinder mounting seat, and the push rod passes through the guide sleeve;

[0021] The end positioning seat is provided with at least one avoidance groove opposite to the push rod.

[0022] Furthermore, the side propulsion mechanism includes a side support seat, and a propulsion cylinder installed on the side support seat and arranged in a one-to-one correspondence with the propulsion block. The propulsion cylinder drives the propulsion block connected to it to press against the side of the battery box.

[0023] Furthermore, a propulsion assembly corresponding to the propulsion block is provided on the side support seat, and the propulsion assembly includes a propulsion seat, and an inner wedge block and an outer wedge block sequentially installed in the propulsion seat from the inside to the outside, the opposing surfaces of the inner wedge block and the outer wedge block are matched with an inclined surface, the propulsion block is fixed on the inner side surface of the inner wedge block, and the outer wedge block is connected to the piston rod of the propulsion cylinder below the propulsion seat;

[0024] A guide block is provided on the outer side of the outer wedge block, and guide rods passing through the guide block are installed on both sides of the inner wedge block.

[0025] After adopting the above technical solution, the utility model has the following beneficial effects:

[0026] The utility model assembles a positioning device consisting of an inner support mechanism, a top pressing mechanism, an end positioning mechanism and a side pushing mechanism on the equipment table of the friction welding machine tool, which can achieve precise positioning of the inside, both sides and both ends of the battery box, and then cooperates with the friction welding machine tool to achieve fast and efficient welding of the battery box, which not only ensures the welding quality of the product, but also effectively avoids the problem of welding deformation, eliminates the process of post-weld shaping, and directly improves the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] Figure 1 This is a structural diagram of a positioning device for a battery box friction welding device according to a preferred embodiment of the present invention;

[0029] Figure 2 This is a structural diagram of the inner support mechanism, top pressing mechanism and base plate of the battery box friction welding equipment of the preferred embodiment of the utility model;

[0030] Figure 3 This is a structural diagram of the end positioning mechanism of the battery box friction welding device of the preferred embodiment of the present utility model;

[0031] Figure 4 This is a structural diagram of the side propulsion mechanism of the battery box friction welding device of the preferred embodiment of the present utility model;

[0032] Figure 5 This is an exploded view of the side propulsion mechanism of the battery box friction welding device according to a preferred embodiment of the present invention;

[0033] Figure 6 This is a diagram of the battery box friction welding device (the friction welding body is not shown) in use according to a preferred embodiment of the present invention;

[0034] Figure 7 This is a structural diagram of a battery box to which the present utility model is applied;

[0035] In the figure: inner support mechanism 1, inner support frame 11, pad 12, assembly groove 13, positioning step 14, top clamping mechanism 2, frame 21, clamping block 22, clamping cylinder 23, guide rail 24, roller 25, guide bracket 26, end positioning mechanism 3, end positioning seat 31, pushing cylinder 32, cylinder mounting seat 33, guide sleeve 34, push rod 35, L-shaped crank arm 36, straight connecting plate 37, avoidance groove 38, side propulsion mechanism 4, propulsion block 41, side support seat 42, propulsion cylinder 43, propulsion seat 44, inner wedge block 45, outer wedge block 46, guide block 47, guide rod 48, spring 49, base plate 5, battery box 6, bottom plate 61, side plate 62, protrusion 63, equipment table 71, welding head 72. DETAILED DESCRIPTION

[0036] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0038] like Figure 1-6 As shown, a battery case friction welding device includes a friction welding machine and a positioning device installed on a friction welding machine equipment platform 71, the positioning device includes an inner support mechanism 1, a top clamping mechanism 2, an end positioning mechanism 3 and a side pushing mechanism 4, the inner support mechanism 1 includes a plurality of inner support frames 11 arranged side by side, the inner support frames 11 are supported inside the battery case 6; the top clamping mechanism 2 includes a horizontally arranged frame 21, and a plurality of clamping blocks 22 installed on the frame 21 and arranged in a row, the clamping blocks 22 can be clamped on the top of the battery case 6; the end positioning mechanism 3 arranges the two ends of the support mechanism in a left and right relative manner, the end positioning mechanism 3 includes an end positioning seat 31 for positioning the two ends of the battery case 6; the side pushing mechanism 4 is arranged on both sides of the inner support mechanism 1 in a front and rear relative manner, the side pushing mechanism 4 includes a plurality of pushing blocks 41 arranged side by side, the pushing blocks 41 can position the sides of the battery case 6.

[0039] like Figure 7 As shown, the main body of the battery box 6 is composed of two bottom plates 61 arranged in parallel at intervals, and two side plates 62 respectively matched with the outer edges of the two bottom plates 61. When processing it, the two bottom plates 61 and the two side plates 62 will be combined into a U-shaped box structure and placed with the opening facing downward.

[0040] Among them, the inner support frame 11 is supported inside the U-shaped box to position the inner walls of the bottom plate 61 and the side plate 62; the clamping block 22 of the top clamping mechanism 2 can be pressed on the top of the battery box 6 to position the outer wall of the bottom plate 61; the end positioning seat 31 of the end positioning mechanism 3 is used to position the ends of the battery box 6, namely the bottom plate 61 and the side plate 62; the pushing block 41 of the side pushing mechanism 4 is used to position the outer wall of the side plate 62.

[0041] In order to be able to install the entire positioning device on the friction welding machine in an integrated manner, the positioning device includes a base plate 5 detachably mounted on the equipment table 71, and the internal support mechanism 1, the top clamping mechanism 2, the end positioning mechanism 3 and the side propulsion mechanism 4 are respectively mounted on the base plate 5.

[0042] The base plate 5 can be mounted on the equipment table 71 of the friction welding machine by means of fasteners such as bolts, so as to facilitate assembly and disassembly.

[0043] Preferably, a lifting ring is provided on the base plate 5 to facilitate the movement of the entire positioning device.

[0044] In order to support the inner wall of the bottom plate 61 and prevent the inner support frame 11 from causing wear on the surface of the bottom plate 61 , a pad 12 is provided on the top of the inner support frame 11 .

[0045] Specifically, an assembly groove 13 is provided on the top of the inner support frame 11 , and the pad 12 is disposed in the corresponding assembly groove 13 to support the bottom plate 61 .

[0046] In this embodiment, at least four pads 12 are provided on each inner support frame 11 , and each base plate 61 is supported by at least two pads 12 to ensure the stability of the support and avoid welding deformation.

[0047] In order to cooperate with the side panels 62 , positioning steps 14 are provided on both sides of the inner support frame 11 .

[0048] Among them, a protrusion 63 is provided on the inner wall of the side panel 62, the side of the bottom plate 61 is supported above the protrusion 63, and the bottom of the protrusion 63 is placed on the corresponding positioning step 14, so as to utilize the inner support frame 11 to realize the positioning of the inner wall of the side panel 62.

[0049] In order to be able to press the bottom plate 61 to position its outer wall, the frame 21 is a U-shaped frame with the opening facing right, and a pressing cylinder 23 corresponding to the pressing block 22 is provided at the bottom of the upper beam of the U-shaped frame. The pressing cylinder 23 drives the pressing block 22 connected to its piston rod to press on the top of the battery box 6.

[0050] Preferably, the pressing block 22 is a U-shaped block with its opening facing downward, and its two ends can be pressed on the two bottom plates 61 accordingly, that is, the two bottom plates 61 can be pressed by the same set of pressing blocks 22.

[0051] When friction welding is performed, the clamping block 22 is placed above the battery box 6. In order to prevent the clamping block 22 from affecting the removal and placement of the battery box 6, the top clamping mechanism 2 includes a guide rail 24 that is arranged horizontally and passes through each inner support frame 11, and a roller 25 that cooperates with the guide rail 24 is provided at the bottom of the frame 21.

[0052] In this embodiment, the guide rail 24 extends rightward from the left end of the inner support mechanism 1 and passes through each inner support frame 11. The roller 25 is disposed at the bottom of the lower beam of the frame 21. After the bottom plate 61 and the side plates 62 are in place, the frame 21 can be pushed rightward on the guide rail 24. During this movement, the lower beam of the frame 21 passes through each inner support frame 11, and the upper beam moves above the bottom plate 61, so that each pressing block 22 can be pressed against the outer wall of the bottom plate 61.

[0053] In order to guide the movement of the frame 21 , guide brackets 26 are provided at both ends of the inner support mechanism 1 , and the frame 21 can pass through the guide brackets 26 .

[0054] There are two windows on the guide bracket 26. The guide rail 24 passes through the lower window. When the frame 21 moves, its lower beam passes through the lower window and the upper beam passes through the upper window.

[0055] Since there are two bottom plates 61 and two side plates 62 respectively, the bottom plates 61 and the side plates 62 correspond to each other to form a group, and the two ends of the combination of two pairs of bottom plates 61 and side plates 62 are positioned, and four end positioning mechanisms 3 are provided, and are arranged in a left-right opposite manner on both sides of the inner support mechanism 1 in a group of two. The two end positioning mechanisms 3 located at the same end of the inner support mechanism 1 are respectively located on both sides of the top clamping mechanism 2.

[0056] Specifically, the end positioning seats 31 are respectively arranged at the positions where the bottom plate 61 and the side plate 62 cooperate, so that when positioning, the ends of the bottom plate 61 and the side plate 62 of the same group are both against the side walls of the end positioning seats 31 facing both, so as to achieve the positioning of the ends of both.

[0057] The friction welding position is the junction of the side plate 62 and the corresponding bottom plate 61, that is, the position of the end positioning seat 31. In order to ensure the welding quality, a pushing cylinder 32 is provided on the end positioning seat 31. The piston rod of the pushing cylinder 32 is connected to an arc-starting block (not shown in the figure). The pushing cylinder 32 can drive the arc-starting block connected to it to press against the end of the battery box 6.

[0058] When welding the connection between the bottom plate 61 and the side plate 62, the welding head 72 can weld from the arc-starting block at one end of the bottom plate 61 to the arc-starting block at the other end thereof, thereby preventing problems such as weld nodules and incomplete welding and ensuring welding quality.

[0059] The setting of the pushing cylinder 32 can move the arc-striking block outward when placing the bottom plate 61 and the side plate 62, so as to avoid affecting the placement of the bottom plate 61 and the side plate 62. When the bottom plate 61 and the side plate 62 are placed in place, the pushing cylinder 32 drives the arc-striking block to press against the end of the connection between the bottom plate 61 and the side plate 62 to facilitate subsequent welding operations.

[0060] In order to be able to drive the movement of the arc-striking block by pushing the cylinder 32, a cylinder mounting seat 33 is provided on the end positioning seat 31. The pushing cylinder 32 is hinged on the cylinder mounting seat 33 with the piston rod facing inward. The piston rod of the pushing cylinder 32 is connected to the push rod 35 through a hinged connecting rod, and the push rod 35 is connected to the corresponding arc-striking block.

[0061] Among them, the articulated connecting rod includes an L-shaped crank arm 36 and a straight connecting plate 37. The L-shaped crank arm 36 is hinged to the cylinder mounting seat 33, the piston rod of the pushing cylinder 32 and one end of the straight connecting plate 37 respectively, and the other end of the straight connecting plate 37 is hinged to the push rod 35.

[0062] When placing the bottom plate 61 and the side plate 62, the piston rod of the pushing cylinder 32 retracts, and its piston rod will pull the push rod 35 outward through the hinged connecting rod, so that the arc-starting block is away from the bottom plate 61 and the side plate 62, which is convenient for the placement of the bottom plate 61 and the side plate 62; when welding, the piston rod of the pushing cylinder 32 is extended, and its piston rod can push the push rod 35 inward through the hinged connecting rod to press the arc-starting block against the end of the connection between the bottom plate 61 and the side plate 62.

[0063] In order to guide the movement of the push rod 35 , a guide sleeve 34 is provided at the inner end of the cylinder mounting seat 33 , and the push rod 35 passes through the guide sleeve 34 .

[0064] In order to ensure the stability of the positioning of the end of the battery box 6, the height of the end positioning seat 31 is not lower than the top height of the bottom plate 61 and the side plate 62. In order to facilitate the cooperation between the arc striking block and the end of the connection between the bottom plate 61 and the side plate 62, at least one avoidance groove 38 opposite to the push rod 35 is provided on the end positioning seat 31.

[0065] After the side panel 62 is placed on the side of the bottom plate 61, since the two end positioning seats 31 at both ends of the side panel 62 are fixed in position, it is necessary to push the side panel 62 inward from the outside of the side panel 62 to put it in place and position the outer wall of the side panel 62. Therefore, the side propulsion mechanism 4 includes a side support seat 42, and a propulsion cylinder 43 installed on the side support seat 42 and arranged one-to-one with the propulsion block 41. The propulsion cylinder 43 drives the propulsion block 41 connected to it to press against the side of the battery box 6.

[0066] The side support seat 42 includes an upper plate and a lower plate, and a plurality of vertical plates supported between the upper plate and the lower plate. The pushing cylinder 32 is installed at the bottom of the upper plate, and its piston rod passes through the upper plate and is connected to the pushing block 41.

[0067] In order to be able to drive the propulsion block 41 to move inward through the propulsion cylinder 43, a propulsion assembly corresponding to the propulsion block 41 is provided on the side support seat 42. The propulsion assembly includes a propulsion seat 44, and an inner wedge block 45 and an outer wedge block 46 installed in the propulsion seat 44 from the inside to the outside. The opposing surfaces of the inner wedge block 45 and the outer wedge block 46 are matched with inclined surfaces. The propulsion block 41 is fixed on the inner side surface of the inner wedge block 45, and the outer wedge block 46 is connected to the piston rod of the propulsion cylinder 43 below the propulsion seat 44.

[0068] The propulsion seat 44 is installed on the upper plate of the side support seat 42, and its upper surface is provided with grooves for installing the inner wedge block 45 and the outer wedge block 46, and the piston rod of the propulsion cylinder 43 passes through the upper plate and is connected to the bottom of the propulsion seat 44 and the outer wedge block 46.

[0069] In this embodiment, the outer side surface of the inner wedge block 45 is an inclined surface with a lower end inclined downward.

[0070] When the piston rod of the pushing cylinder 32 retracts, the piston rod drives the outer wedge block 46 to move downward. Through the cooperation between the outer wedge block 46 and the inclined surface of the inner wedge block 45, the outer wedge block 46 will push the inner wedge block 45 to move inward, thereby using the pushing block 41 to push the side plate 62 inward until it moves into place. At this time, the pushing block 41 is fixed to the outer wall of the side plate 62 to position it and avoid the problem of welding deformation.

[0071] In order to guide the inward movement of the inner wedge block 45 , a guide block 47 is provided on the outer side of the outer wedge block 46 , and guide rods 48 passing through the guide block 47 are installed on both sides of the inner wedge block 45 .

[0072] The guide block 47 is fixedly disposed in the notch of the propulsion seat 44 . When the propulsion block 41 and the inner wedge block 45 move inward, the guide rod 48 will move synchronously therewith.

[0073] Preferably, the guide rod 48 is provided with a spring 49 located on the outside of the guide block 47. When the piston rod of the cylinder 43 retracts, the outer wedge block 46 is used to push the inner wedge block 45 inward, and the guide rod 48 moves inward synchronously with the inner wedge block 45. At this time, the spring 49 is compressed. When the piston rod of the cylinder 43 is extended and reset, under the elastic force of the spring 49, the inner wedge block 45 and the guide rod 48 move outward and reset, so as to facilitate the disassembly of the product, i.e., the completed battery box, through the gap.

[0074] When processing the battery case 6, first place the two bottom plates 61 side by side on the inner support frames 11 arranged in a row and between the end positioning seats 31 at both ends, and then place the two side plates 62 on the outside of the corresponding bottom plates 61. At this time, the propulsion cylinder 43 drives the propulsion block 41 to push the side plates 62 inward, so that they move into place and cooperate with the corresponding bottom plates 61. Then move the frame 21 in from the left side of the inner support mechanism 1, so that the clamping block 22 is placed above the bottom plate 61, and use the clamping cylinder 23 to drive the clamping block 22 to clamp the bottom plate 61. At this time, the two bottom plates 61 and side plates 62 that make up the battery case 6 can be fixed in place.

[0075] Then, the pushing cylinder 32 is used to drive the corresponding arc-starting plate to press against the end of the connection between the bottom plate 61 and the side plate 62 , and the friction welding machine is started. The welding head 72 can then perform friction welding on the connection between the bottom plate 61 and the side plate 62 .

[0076] The utility model can realize fast, efficient and accurate positioning of the battery box 6, and can effectively improve the processing efficiency while ensuring the processing quality.

[0077] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. A battery box friction welding device, characterized in that: It includes a friction welding machine and a positioning device installed on a friction welding machine equipment platform (71), wherein the positioning device includes An internal support mechanism (1) comprising a plurality of internal support frames (11) arranged side by side, wherein the internal support frames (11) are supported inside a battery box (6); A top pressing mechanism (2) comprising a frame (21) arranged in a transverse direction, and a plurality of pressing blocks (22) mounted on the frame (21) and arranged in a row, wherein the pressing blocks (22) are capable of pressing against the top of the battery box (6); An end positioning mechanism (3) is provided at two ends of the support mechanism in a left-right relative manner, wherein the end positioning mechanism (3) includes an end positioning seat (31) for positioning two ends of the battery box (6); The side propulsion mechanism (4) is arranged on both sides of the inner support mechanism (1) in a front-rear relative manner. The side propulsion mechanism (4) includes a plurality of propulsion blocks (41) arranged side by side. The propulsion blocks (41) can position the sides of the battery box (6).

2. The battery box friction welding equipment according to claim 1, characterized in that: The positioning device comprises a base plate (5) detachably mounted on an equipment platform (71); the inner support mechanism (1), the top pressing mechanism (2), the end positioning mechanism (3) and the side propulsion mechanism (4) are respectively mounted on the base plate (5).

3. The battery box friction welding equipment according to claim 1, characterized in that: A cushion block (12) is provided on the top of the inner support frame (11); Positioning steps (14) are provided on both sides of the inner support frame (11).

4. The battery case friction welding equipment according to claim 1, characterized in that: The frame (21) is a U-shaped frame with an opening facing right, and a pressing cylinder (23) corresponding to a pressing block (22) is provided at the bottom of the upper beam of the U-shaped frame. The pressing cylinder (23) drives the pressing block (22) connected to its piston rod to press on the top of the battery box (6).

5. The battery case friction welding equipment according to claim 1, characterized in that: The top pressing mechanism (2) includes a guide rail (24) arranged transversely and passing through each inner support frame (11), and a roller (25) is provided at the bottom of the frame (21) and is matched with the guide rail (24); Guide brackets (26) are provided at both ends of the inner support mechanism (1), and the frame (21) can pass through the guide brackets (26).

6. The battery case friction welding equipment according to claim 1, characterized in that: Four end positioning mechanisms (3) are provided and are arranged in pairs on both sides of the inner support mechanism (1) in a left-right opposite manner. The two end positioning mechanisms (3) located at the same end of the inner support mechanism (1) are respectively located on both sides of the top pressing mechanism (2).

7. The battery case friction welding equipment according to claim 1, characterized in that: A pushing cylinder (32) is provided on the end positioning seat (31), and an arc striking block is connected to the piston rod of the pushing cylinder (32). The pushing cylinder (32) can drive the arc striking block connected thereto to press against the end of the battery box (6).

8. The battery case friction welding equipment according to claim 7, characterized in that: A cylinder mounting seat (33) is provided on the end positioning seat (31), the pushing cylinder (32) is hinged on the cylinder mounting seat (33) in a manner that the piston rod faces inward, the piston rod of the pushing cylinder (32) is connected to a push rod (35) through a hinged connecting rod, and the push rod (35) is connected to the corresponding arc striking block; A guide sleeve (34) is provided at the inner end of the cylinder mounting seat (33), and the push rod (35) passes through the guide sleeve (34); The end positioning seat (31) is provided with at least one avoidance groove (38) opposite to the push rod (35).

9. The battery case friction welding equipment according to claim 1, characterized in that: The side propulsion mechanism (4) comprises a side support seat (42) and a propulsion cylinder (43) mounted on the side support seat (42) and arranged in a one-to-one correspondence with the propulsion block (41). The propulsion cylinder (43) drives the propulsion block (41) connected thereto to abut against the side of the battery box (6).

10. The battery case friction welding equipment according to claim 9, characterized in that: The side support seat (42) is provided with a propulsion assembly corresponding to the propulsion block (41), and the propulsion assembly includes a propulsion seat (44), and an inner wedge block (45) and an outer wedge block (46) sequentially installed in the propulsion seat (44) from the inside to the outside. The opposite surfaces of the inner wedge block (45) and the outer wedge block (46) are matched with inclined surfaces. The propulsion block (41) is fixed on the inner side surface of the inner wedge block (45). The outer wedge block (46) is connected to the piston rod of the propulsion cylinder (43) below the propulsion seat (44); A guide block (47) is provided on the outer side of the outer wedge block (46), and guide rods (48) passing through the guide block (47) are installed on both sides of the inner wedge block (45).

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