Spot welding machine for lithium battery processing

Abstract

The utility model relates to a spot welding machine, in particular to a spot welding machine for processing a lithium battery. The spot welding machine for lithium battery machining comprises a bottom frame, a control table, an electric sliding table, a sliding block, a welding gun, a pressing assembly, a movable table, balls, a supporting table and a clamping assembly, the control table is installed on the rear side of the top of the bottom frame, the electric sliding table is installed on the front side of the control table, the sliding block is connected to the electric sliding table in a sliding mode, and the welding gun is installed on the sliding block. A welding gun is installed on the sliding block, the welding gun and the electric sliding table are both electrically connected with the control table, and a pressing assembly is arranged on the sliding block. And the pressing plate is arranged on the sliding block and ascends and descends synchronously with the welding gun, so that the metal sheet can be pressed during spot welding every time, and accurate welding of the metal sheet and the battery pack is ensured. And meanwhile, the clamping assembly is arranged on the supporting table, the battery pack can be limited in three directions, and the stability and precision in the welding process can be guaranteed to the maximum extent.

Description

TECHNICAL FIELD

[0001] The utility model relates to a spot welding machine, especially a spot welding machine for lithium battery processing. BACKGROUND

[0002] In the lithium battery processing process, since the capacity of a single battery is usually small, in actual application, it is usually necessary to weld multiple lithium batteries together for use. The spot welding machine is a key device for welding metal sheets (also known as tabs or connecting sheets) on the top or bottom of the battery. In this way, multiple batteries can be connected in series or parallel to form a battery pack to meet higher capacity and voltage requirements.

[0003] However, the traditional spot welding machine has the following problems in the welding process:

[0004] 1. The traditional spot welding machine does not have an additional pressing structure during welding, relying only on the pressure during welding. This may cause the metal sheets above the battery pack to move slightly during welding, thereby affecting the accuracy and quality of the welding;

[0005] 2. The clamping structure of most traditional spot welding machines is relatively simple and can only fix the battery pack in one direction. During the operation of the equipment, due to various vibration forces, the battery pack may experience slight shaking, which will also reduce the stability and quality of the welding. SUMMARY

[0006] In order to overcome the above-mentioned shortcomings, the technical problem of the utility model is to provide a spot welding machine for lithium battery processing.

[0007] The technical implementation scheme of the utility model is: a spot welding machine for lithium battery processing, comprising a chassis, a control console, an electric sliding table, a sliding block, a welding gun, a pressing assembly, a moving table, a ball, a support table and a clamping assembly, the control console is installed on the top rear side of the chassis, the electric sliding table is installed on the front side of the control console, the sliding block is connected to the electric sliding table in a sliding manner, the welding gun is installed on the sliding block, the welding gun and the electric sliding table are electrically connected to the control console, the pressing assembly is provided on the sliding block, the moving table is placed on the top of the chassis at the front side of the control console, a plurality of balls are connected to the bottom of the moving table in a rotating manner, the balls slide on the top surface of the chassis, the support table is connected to the moving table in a sliding manner, and the clamping assembly is provided on the support table.

[0008] As an improvement of the above scheme, the pressing assembly comprises a fixed block, a pressing plate and a return spring, the fixed block is connected to the left side of the welding gun on the sliding block, the pressing plate is connected to the bottom of the fixed block in a sliding manner, and two return springs are connected between the pressing plate and the fixed block.

[0009] As the improvement of the above-mentioned scheme, the clamping assembly comprises a second screw rod, a sliding frame, a third screw rod and a movable frame, the third screw rods are rotationally connected to the two sides of the support table, the movable frame is threadedly connected between the third screw rods, the movable frame is limited on the two sides of the support table, the second screw rod is rotationally connected to the rear side of the support table, the second screw rod is a bidirectional screw rod, the sliding frames are threadedly connected to the two sides of the second screw rod, and the sliding frames are slidably connected with the movable frame.

[0010] As the improvement of the above-mentioned scheme, the clamping assembly comprises a second screw rod, a sliding frame, a third screw rod and a movable frame, the third screw rods are rotationally connected to the two sides of the support table, the movable frame is threadedly connected between the third screw rods, the movable frame is limited on the two sides of the support table, the second screw rod is rotationally connected to the rear side of the support table, the second screw rod is a bidirectional screw rod, the sliding frames are threadedly connected to the two sides of the second screw rod, and the sliding frames are slidably connected with the movable frame.

[0011] As the improvement of the above-mentioned scheme, the clamping assembly comprises a second screw rod, a sliding frame, a third screw rod and a movable frame, the third screw rods are rotationally connected to the two sides of the support table, the movable frame is threadedly connected between the third screw rods, the movable frame is limited on the two sides of the support table, the second screw rod is rotationally connected to the rear side of the support table, the second screw rod is a bidirectional screw rod, the sliding frames are threadedly connected to the two sides of the second screw rod, and the sliding frames are slidably connected with the movable frame.

[0012] As the improvement of the above-mentioned scheme, the clamping assembly comprises a second screw rod, a sliding frame, a third screw rod and a movable frame, the third screw rods are rotationally connected to the two sides of the support table, the movable frame is threadedly connected between the third screw rods, the movable frame is limited on the two sides of the support table, the second screw rod is rotationally connected to the rear side of the support table, the second screw rod is a bidirectional screw rod, the sliding frames are threadedly connected to the two sides of the second screw rod, and the sliding frames are slidably connected with the movable frame.

[0013] Beneficial effects: 1. The pressing plate is arranged on the sliding block and synchronously lifts with the welding gun, the metal sheet can be pressed at each spot welding time, the accurate welding of the metal sheet and the battery pack is ensured. Meanwhile, the clamping assembly is arranged on the support table, the battery pack can be limited in three directions, the combination of the two can maximize the stability and accuracy in the welding process, and effectively avoids the quality problems caused by the movement of the metal sheet or the battery pack in the welding process;

[0014] 2. The first electric push rod and the second electric push rod are arranged, which are used for controlling the movement of the support table in the left-right and front-rear directions, and are connected with the control table, so that the position can be automatically adjusted in the machining process, the overall work efficiency is significantly improved, the manual intervention is reduced, and the labor intensity is reduced;

[0015] 3. The height of the support table can be adjusted through the cooperation of the first screw rod and the rotating disc, the size and height of the battery pack can be flexibly adjusted, the use flexibility of the equipment is improved, and the battery packs of different specifications can be adapted. DETAILED DESCRIPTION

[0016] Figure 1 It is a three-dimensional structure schematic view of the utility model.

[0017] Figure 2 It is a first partial three-dimensional structure schematic view of the utility model.

[0018] Figure 3 It is a partial sectional view of the utility model.

[0019] Figure 4 It is a second partial three-dimensional structure schematic view of the utility model.

[0020] In the drawing, reference signs are as follows: 1, base frame; 2, control console; 3, electric sliding table; 4, sliding block; 5, welding gun; 6, fixed block; 7, pressing plate; 8, return spring; 9, moving table; 10, ball; 11, rotating disc; 12, first screw; 13, support table; 14, second screw; 15, sliding frame; 16, third screw; 17, movable frame; 18, first electric push rod; 19, connecting frame; 20, second electric push rod; 21, pushing frame. DETAILED DESCRIPTION

[0021] The above scheme is further described below in combination with specific embodiments. It should be understood that these embodiments are used to illustrate the present application and do not limit the scope of the present application. The implementation conditions used in the embodiments can be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not mentioned are usually the conditions in conventional experiments.

[0022] Embodiment: A spot welding machine for lithium battery processing, as shown in Figures 1-2 It comprises a base frame 1, a control console 2, an electric sliding table 3, a sliding block 4, a welding gun 5, a pressing assembly, a moving table 9, a ball 10, a support table 13 and a clamping assembly. The control console 2 is installed on the top rear side of the base frame 1. The electric sliding table 3 is installed on the front side of the control console 2. The sliding block 4 is slidably connected to the electric sliding table 3. The welding gun 5 for welding the battery pack and the metal sheet is installed on the sliding block 4. The welding gun 5 and the electric sliding table 3 are electrically connected to the control console 2. The pressing assembly is arranged on the sliding block 4. The moving table 9 is placed on the top of the base frame 1 at the position in front of the control console 2. The moving table 9 is rotatably connected to the base frame 1 at the bottom. The ball 10 is slidably arranged on the top of the base frame 1 to assist the movement of the moving table 9. The support table 13 for placing the battery pack is slidably connected to the moving table 9. The clamping assembly is arranged on the support table 13.

[0023] As shown in Figure 1 The pressing assembly comprises a fixed block 6, a pressing plate 7 and a return spring 8. The fixed block 6 is welded on the left side of the welding gun 5 on the sliding block 4. The pressing plate 7 for pressing the metal sheet is slidably connected to the bottom of the fixed block 6. The two return springs 8 are connected between the pressing plate 7 and the fixed block 6.

[0024] As shown in Figure 2As shown, the clamping assembly includes a second screw 14, a sliding frame 15, a third screw 16 and a movable frame 17, the support table 13 is rotatably connected with the third screw 16 on the left and right sides, the third screw 16 is threadedly connected with the movable frame 17, the movable frame 17 is limited on both sides of the support table 13, the second screw 14 is rotatably connected with the support table 13 on the rear side, the second screw 14 is a bidirectional screw, the sliding frame 15 for clamping the battery pack is threadedly connected with the second screw 14 on the left and right sides, the sliding frame 15 is slidably connected with the movable frame 17, and the sliding frame 15 is further limited by the movable frame 17.

[0025] As shown in Figure 3 , it further comprises a rotating disc 11 and a first screw 12, the first screw 12 is welded in the middle of the bottom of the support table 13, the first screw 12 is slidably connected with the inside of the moving table 9, the rotating disc 11 is rotatably connected with the top of the moving table 9, and the rotating disc 11 is threadedly connected with the first screw 12 to adjust the height of the support table 13.

[0026] As shown in Figure 1 and Figure 4 , it further comprises a first electric push rod 18, a connecting frame 19, a second electric push rod 20 and a pushing frame 21, the second electric push rod 20 and the first electric push rod 18 are bolted on the top of the left front side of the base frame 1, the pushing frame 21 is transversely connected on the telescopic rod of the second electric push rod 20, the connecting frame 19 is longitudinally connected on the telescopic rod of the first electric push rod 18, the pushing frame 21 and the connecting frame 19 are both sleeved on the outside of the moving table 9, and the pushing frame 21 and the connecting frame 19 are used for adjusting the front and back and left and right positions of the moving table 9, the length of the pushing frame 21 is longer than that of the connecting frame 19, the connecting frame 19 is located below the pushing frame 21, and the two sides are staggered, and the first electric push rod 18 and the second electric push rod 20 are electrically connected with the control console 2.

[0027] When spot welding of lithium batteries is performed, the battery pack is first placed on the support table 13, then the second screw 14 and the third screw 16 are rotated, the third screw 16 drives the movable frame 17 to move to the rear side, and the second screw 14 drives the two sliding frames 15 to move to the inner side, so that the battery pack is clamped in the middle by the two sliding frames 15 and the movable frame 17, after the battery pack is clamped, the height of the support table 13 can be adjusted according to the size and height of the battery pack, the rotating disc 11 is rotated forward or reversely, the first screw 12 is driven to move upward or downward, the support table 13 is driven to move upward or downward, the height of the battery pack can be adjusted, after the height is adjusted, the metal sheet is placed on the top of the battery pack, then the electric sliding table 3 and the welding gun 5 are started by operating the control console 2, the electric sliding table 3 drives the sliding block 4 and the welding gun 5 to move downward, and drives the fixed block 6 and the pressing plate 7 to move downward at the same time, the pressing plate 7 can press the metal sheet on the battery pack, the return spring 8 plays a buffering role, ensures that the pressing plate 7 is in close contact with the metal sheet, and the welding gun 5 can weld the metal sheet on the top of the battery pack.

[0028] In the spot welding process, the console 2 will control the electric sliding platform 3 according to the initial set program to drive the lifting and lowering of the sliding block 4, and can automatically drive the first electric push rod 18 and the second electric push rod 20 to adjust the position of the support table 13, and the welding gun 5 carries out spot welding on the battery of the battery pack one by one. The first electric push rod 18 is controlled to extend or shorten the telescopic rod, which can drive the connecting frame 19 to move left or right to push the moving table 9 and the support table 13 to move along the push frame 21, and the ball 10 plays an auxiliary moving role. The second electric push rod 20 is controlled to extend or shorten the telescopic rod, which can drive the push frame 21 to move forward or backward to push the moving table 9 and the support table 13 to move along the connecting frame 19, so as to adjust the position of the battery pack and ensure that the batteries are aligned with the welding gun 5 one by one to carry out spot welding processing in order.

[0029] When the spot welding of the battery pack is completed, the console 2 controls the electric sliding platform 3 to drive the sliding block 4 and the welding gun 5 to reset, and closes the welding gun 5. The sliding block 4 drives the fixed block 6 and the pressing plate 7 to reset, the return spring 8 rebounds and resets, the pressing plate 7 loosens the pressing of the metal sheet, and the first electric push rod 18 and the second electric push rod 20 are controlled to close. The operator can reverse the second screw rod 14 and the third screw rod 16 to drive the sliding frame 15 to move outward to reset, and drive the movable frame 17 to move to the front side to reset, thereby loosening the clamping of the battery pack, and the processed battery pack can be unloaded.

[0030] The above only describes the preferred embodiments of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A spot welder for lithium battery processing, characterized by: The utility model provides a welding machine, including the chassis (1), the control cabinet (2), the electric sliding platform (3), the sliding block (4), the welding torch (5), the compression assembly, the moving platform (9), the ball (10), the support platform (13) and the clamping assembly, the chassis (1) top rear side is equipped with the control cabinet (2), the control cabinet (2) front side is equipped with the electric sliding platform (3), the electric sliding platform (3) is slidably connected with the sliding block (4), the sliding block (4) is equipped with the welding torch (5), and the welding torch (5) is electrically connected with the control cabinet (2), the sliding block (4) is equipped with the compression assembly, the chassis (1) top is placed with the moving platform (9) in the position of the control cabinet (2) front side, and the moving platform (9) bottom is rotatably connected with a plurality of ball (10), and the ball (10) slides on the top surface of chassis (1), and the moving platform (9) is slidably connected with the support platform (13), and the support platform (13) is equipped with the clamping assembly.

2. A spot welder for processing lithium batteries as claimed in claim 1, characterized in that: The compression assembly includes fixed block (6), pressing plate (7) and return spring (8), and the sliding block (4) is connected with the fixed block (6) at the left side of the welding torch (5), the fixed block (6) bottom is slidably connected with the pressing plate (7), and the pressing plate (7) is connected with the fixed block (6) between two return springs (8).

3. A spot welder for processing lithium batteries as claimed in claim 2, characterized in that: The clamping assembly includes second screw (14), sliding frame (15), third screw (16) and movable frame (17), and the support platform (13) both sides are rotatably connected with third screw (16), and the third screw (16) is threadedly connected with movable frame (17) between the third screw (16), and the movable frame (17) is limited on the both sides of support platform (13), and the support platform (13) rear side is rotatably connected with second screw (14), and the second screw (14) is bidirectional screw, and the second screw (14) both sides are threadedly connected with sliding frame (15), and the sliding frame (15) is slidably connected with movable frame (17), and then is limited by movable frame (17).

4. A spot welder for processing lithium batteries as claimed in claim 3, characterized in that: It also includes rotating disc (11) and first screw (12), and the support platform (13) bottom middle is connected with first screw (12), and the first screw (12) is slidably connected with the inside of moving platform (9), and the moving platform (9) top is rotatably connected with rotating disc (11), and the rotating disc (11) is threadedly connected with first screw (12).

5. A spot welder for processing lithium batteries as claimed in claim 4, characterized in that: It also includes first electric push rod (18), connecting frame (19), second electric push rod (20) and push frame (21), and the chassis (1) top left front side is equipped with second electric push rod (20) and first electric push rod (18), and the second electric push rod (20) telescopic rod is connected with horizontal push frame (21), and the first electric push rod (18) telescopic rod is connected with vertical connecting frame (19), and the push frame (21) and connecting frame (19) are all covered in the outside of moving platform (9), and the first electric push rod (18) and second electric push rod (20) are electrically connected with the control cabinet (2).

6. A spot welder for processing lithium batteries as claimed in claim 5, characterized in that: The length of push frame (21) is longer than the length of connecting frame (19), and the connecting frame (19) is located below the push frame (21), and the both sides are staggered distribution.

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