A protection and pressing mechanism for tab welding

Abstract

The application relates to a protection and pressing mechanism for tab welding, which comprises a base plate, a servo module, a fixed seat, a movable seat and a welding protection pressing block mechanism. The servo module is located on the side of the base plate, the fixed seat is fixedly connected with the side of the base plate, the movable seat is movably connected with the slide rail on the side of the base plate, the movable seat is connected with the slider of the servo module, and the welding protection pressing block mechanism is two in number and is respectively located on the fixed seat and the movable seat. The welding protection pressing block mechanism comprises a connecting seat, a pressing block and a separation flow guide block. The connecting seat is connected with the fixed seat and the movable seat respectively, the pressing block is movably connected with the connecting seat through a spring guide column, and the separation flow guide block is located in the cavity of the pressing block. The application can press and weld the tab of the automobile storage battery, avoids the virtual welding phenomenon, protects the gas from directly blowing to the welding position, avoids the influence on the welding effect, and has the gas suction capacity.

Description

TECHNICAL FIELD

[0001] The application relates to an automatic welding mechanism, in particular to a protection and pressing mechanism for tab welding. BACKGROUND

[0002] The battery is an indispensable part of an automobile and can be divided into a traditional lead-acid battery and a maintenance-free battery.

[0003] Since the battery uses a lead-calcium alloy as a grid frame, the amount of water decomposition generated during charging is small, the amount of water evaporation is low, and in addition, the shell adopts a sealed structure, so the released sulfuric acid gas is very small, so compared with the traditional battery, it has the advantages of not needing to add any liquid, the wire post head, and long storage time of the electric quantity.

[0004] After the assembly of the battery core is completed, the tab on the side of the battery needs to be welded to realize the fixed connection of the tab.

[0005] The existing tab welding operation is carried out on an automatic welding line. However, the existing tab welding only simply spot-welds the tab and does not press the tab, so as to easily cause the phenomenon of false welding; and the protection measure in the existing tab welding operation is that the tail end of the air pipe directly sprays protective gas towards the welding position, since the gas speed is fast, the welding effect is directly affected, and the gas suction device is lacked. SUMMARY

[0006] The purpose of the present application is to provide a protection and pressing mechanism for tab welding, which can press the tab of the automobile battery for welding to avoid the phenomenon of false welding, the protective gas will not be directly blown to the welding position to avoid affecting the welding effect, and the gas suction capacity is provided to suck away the smoke and dust generated during welding.

[0007] In order to achieve the above purpose, the present application provides the following technical scheme:

[0008] A protection and pressing mechanism for tab welding, comprising a base plate, a servo module, a fixed seat, a movable seat and a welding protection pressing block mechanism; the servo module is located on the side of the base plate, the fixed seat is fixedly connected with the side of the base plate, the movable seat is movably connected with the slide rail on the side of the base plate, the movable seat is connected with the slide block of the servo module, the number of the welding protection pressing block mechanisms is two and they are respectively located on the fixed seat and the movable seat; the welding protection pressing block mechanism comprises a connecting seat, a pressing block and a separation flow guide block, the connecting seat is connected with the fixed seat and the movable seat respectively, the pressing block is movably connected with the connecting seat through a spring guide column, the pressing block comprises a connecting portion and a cavity portion, and the separation flow guide block is located in the cavity portion of the pressing block.

[0009] Further, the connecting part of the pressing block is located at the upper and lower ends of the cavity part, and the spring guide column is specifically connected with the connecting part of the pressing block; the cavity part is in a hollow cavity shape and is provided with an opening at the front part, the top end of the cavity part is provided with an upper air chamber, and the bottom end of the cavity part is provided with a lower air chamber.

[0010] Further, the upper air chamber and the lower air chamber are both in communication with the inner side of the cavity part; the side surface of the cavity part is provided with an upper connecting hole and a lower connecting hole, the upper connecting hole is in communication with the upper air chamber, and the lower connecting hole is in communication with the lower air chamber.

[0011] Further, the separation flow guide block is provided with a drainage groove and a drainage cavity, the drainage groove and the drainage groove are in communication, the side surface of the cavity part of the pressing block is provided with a middle connecting hole, the position of the middle connecting hole corresponds to that of the drainage cavity, and the position of the drainage groove corresponds to that of the front opening of the cavity part.

[0012] Further, the drainage cavity is provided with an upper spoiler, a middle spoiler and a lower spoiler, the middle spoiler corresponds to the position of the drainage groove in a position corresponding manner, and the upper spoiler and the lower spoiler are arranged in a symmetrical manner relative to the middle spoiler.

[0013] Further, the top end opening of the upper air chamber and the bottom end opening of the lower air chamber are both provided with end cover plates matched in shape.

[0014] Further, the application further comprises an air suction hopper, the air suction hopper is located at the side of the base plate away from the welding protection pressing block mechanism, the opening end of the air suction hopper faces the welding protection pressing block mechanism, and the fixed seat, the connecting seat and the movable seat are all provided with a displacement slot.

[0015] The application has the advantages that: the protection and pressing mechanism for tab welding can press and weld the tabs of the automobile storage battery through the cooperation of the servo module, the fixed seat, the movable seat, the welding protection pressing block mechanism and the air suction hopper, avoids the phenomenon of virtual welding of the tabs, protects the gas from being directly blown to the welding position to avoid affecting the welding effect, has the gas multi-stage suction capacity, and can suck away the smoke and dust generated during welding to avoid pollution of the welding environment. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole structure schematic view of the protection and pressing mechanism for tab welding.

[0017] Figure 2 It is a whole structure schematic view of the protection and pressing mechanism for tab welding from another angle.

[0018] Figure 3 It is Figure 2 a partial structure schematic view of the structure shown.

[0019] Figure 4 is a partial structural schematic diagram of the structure shown. Figure 3 is a partial structural schematic diagram of the structure shown.

[0020] Figure 5 is a structural schematic diagram of the pressing block of the protection and pressing mechanism for tab welding.

[0021] Figure 6 is a bottom perspective view of the structure shown. Figure 5

[0022] Figure 7 is a structural schematic diagram of the separation flow guide block of the protection and pressing mechanism for tab welding.

[0023] In the figure: 1, base plate; 2, servo module; 3, sliding rail; 4, fixed seat; 5, movable seat; 6, connecting seat; 7, spring guide column; 8, pressing block; 81, connecting part; 82, cavity part; 83, upper air chamber; 84, upper connecting hole; 85, lower air chamber; 86, lower connecting hole; 87, middle connecting hole; 9, separation flow guide block; 91, drainage groove; 92, flow guide groove; 93, upper spoiler; 94, middle spoiler; 95, lower spoiler; 10, end cover plate; 11, air suction hopper. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the present application clearer and more apparent, the present application will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0025] Reference Figures 1 to 7 A protection and pressing mechanism for tab welding, comprising a base plate 1, a servo module 2, a fixed seat 4, a movable seat 5 and a welding protection pressing block mechanism; the servo module 2 is located on the side of the base plate 1, the fixed seat 4 is fixedly connected with the side of the base plate 1, the movable seat 5 is movably connected with the sliding rail 3 on the side of the base plate 1, the movable seat 5 is connected with the sliding block of the servo module 2, the servo module 2 is used to drive the movable seat 5 to slide horizontally along the sliding rail 3, the number of the welding protection pressing block mechanism is two and each is located on the fixed seat 4 and the movable seat 5; the welding protection pressing block mechanism comprises a connecting seat 6, a pressing block 8 and a separation flow guide block 9, the connecting seat 6 is connected with the fixed seat 4 and the movable seat 5 respectively, the pressing block 8 is movably connected with the connecting seat 6 through a spring guide column 7, the pressing block 8 comprises a connecting part 81 and a cavity part 82, the pressing block 8 is used to press the tab to be welded, the separation flow guide block 9 is located in the cavity part 82 of the pressing block 8, the separation flow guide block 9 is used to guide and disturb the high-pressure nitrogen gas to slow down, so as to avoid the high-pressure nitrogen gas directly blowing to the welding position.

[0026] ​The connecting part 81 of the pressing block 8 is located at the upper and lower ends of the cavity part 82, and the spring guide column 7 is specifically connected with the connecting part 81 of the pressing block 8. The spring guide column 7 is used for buffering to avoid the pressing block 8 from damaging the tab. The cavity part 82 is in a cavity shape and is provided with an opening at the front part, which is used for blowing out nitrogen and simultaneously realizing the suction of welding fume. The top end of the cavity part 82 is provided with an upper air chamber 83, and the bottom end of the cavity part 82 is provided with a lower air chamber 85. The upper air chamber 83 and the lower air chamber 85 are respectively used for realizing the suction of welding fume from the upper and lower ends.

[0027] The upper air chamber 83 and the lower air chamber 85 are both in communication with the inner side of the cavity part 82. The cavity part 82 is provided with an upper connecting hole 84 and a lower connecting hole 86 on the side. The upper connecting hole 84 is in communication with the upper air chamber 83, and the lower connecting hole 86 is in communication with the lower air chamber 85. The upper connecting hole 84 and the lower connecting hole 86 are connected with the joint of the suction pipe of the suction pump.

[0028] The separation flow guide block 9 is provided with a drainage groove 91 and a flow guide cavity 92, and the drainage groove 91 and the flow guide groove 92 are in communication. The cavity part 82 of the pressing block 8 is provided with a middle connecting hole 87 on the side, and the position of the middle connecting hole 87 corresponds to that of the drainage groove 91. The middle connecting hole 87 is connected with the joint of the nitrogen supply pipe. The flow guide cavity 92 corresponds to the position of the front opening of the cavity part 82. The drainage groove 91 is used for draining nitrogen, and the flow guide groove 92 is used for disturbing and guiding nitrogen.

[0029] The flow guide cavity 92 is provided with an upper disturbance block 93, a middle disturbance block 94 and a lower disturbance block 95. The middle disturbance block 94 corresponds to the position of the drainage groove 91. The upper disturbance block 93 and the lower disturbance block 95 are symmetrically arranged relative to the middle disturbance block 94. The middle disturbance block 94 is used for blocking and disturbing nitrogen. The upper disturbance block 93 and the lower disturbance block 95 are both used for disturbing the nitrogen dispersed by the middle disturbance block 94.

[0030] The top end opening of the upper air chamber 83 and the bottom end opening of the lower air chamber 85 are both provided with a shape-matched end cover plate 10, which is used for closing the upper air chamber 83 and the lower air chamber 85.

[0031] It also includes a suction hopper 11, which is located on the side of the base plate 1 away from the welding protection pressing block mechanism. The opening end of the suction hopper 11 faces the welding protection pressing block mechanism. The suction hopper 11 is used for sucking the welding fume not sucked by the pressing block 8 from the back of the base plate 1, so as to ensure the sufficiency of the suction of the welding fume. The fixed seat 4, the connecting seat 6 and the movable seat 5 are all provided with a displacement groove, which is used for displacing the beam of the welding laser.

[0032] The working principle of the present application is as follows: firstly, insert the gas pipe joint of the nitrogen supply pipe into the middle connecting hole 87, and connect the gas suction pipe of the external gas suction pump with the gas suction bucket 11, the upper connecting hole 84 and the lower connecting hole 86 respectively; then, power on the servo module 2, the sliding block driving movable seat 5 slides horizontally along the slide rail 3, the two pressing blocks 8 approach each other, and the positions of the two pressing blocks 8 correspond to the positions of the tabs on the side of the automobile storage battery; then, the base plate 1 is driven by the servo mechanism and moves towards the automobile storage battery, so that the front opening of the pressing block 8 is pressed against the tab; then, the welding operation is started, the laser welding gun located at the rear of the base plate 1 emits laser light, the light passes through the fixed seat 4, the connecting seat 6 and the movable seat 5 which are all provided with a clearance slot, and performs laser welding on the tab of the automobile storage battery; at the same time of welding, nitrogen is supplied from the supply pipe into the middle connecting hole 87, then reaches the flow guide cavity 92 through the drainage groove 91, and is then blocked by the middle turbulence block 94 in the flow guide cavity 92, and is disturbed by the upper turbulence block 93 and the lower turbulence block 95, and finally is sprayed towards the welding position through the front opening of the pressing block 8 at the end of the flow guide cavity 92, so as to avoid that the high-pressure nitrogen gas flow directly blows towards the welding position; at the same time, the external gas suction pump starts to suck, the welding generated smoke is first sucked into the upper air chamber 83 and the lower air chamber 85 through the front opening of the pressing block 8, and then reaches the gas suction pipe through the upper connecting hole 84 and the lower connecting hole 86 respectively; the smoke that is not completely sucked will be sucked by the gas suction bucket 11, and finally reaches the gas suction pipe, so as to realize sufficient suction of the welding smoke.

[0033] In the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] The above embodiments are used to further illustrate the present application, but do not limit the present application to these specific embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be understood as within the protection scope of the present application.

Claims

1. A protection and pressing mechanism for tab welding, characterized in that: The application relates to a welding protection mechanism, which comprises a base plate (1), a servo module (2), a fixed seat (4), a movable seat (5) and a welding protection mechanism; the servo module (2) is located on the side of the base plate (1); the fixed seat (4) is fixedly connected with the side of the base plate (1); the movable seat (5) is movably connected with the slide rail (3) on the side of the base plate (1); the movable seat (5) is connected with the slide block of the servo module (2); the welding protection mechanism is provided with two welding protection mechanisms which are respectively arranged on the fixed seat (4) and the movable seat (5); the welding protection mechanism comprises a connecting seat (6), a pressing block (8) and a separation flow guide block (9); the connecting seat (6) is connected with the fixed seat (4) and the movable seat (5) respectively; the pressing block (8) is movably connected with the connecting seat (6) through a spring guide column (7); the pressing block (8) comprises a connecting portion (81) and a cavity portion (82); the separation flow guide block (9) is arranged in the cavity portion (82) of the pressing block (8); the separation flow guide block (9) is provided with a drainage groove (91) and a flow guide cavity (92); the drainage groove (91) and the flow guide cavity (92) are communicated; the cavity portion (82) of the pressing block (8) is provided with a middle connecting hole (87) which corresponds to the position of the drainage groove (91); the flow guide cavity (92) corresponds to the position of the front opening of the cavity portion (82); the flow guide cavity (92) is provided with an upper disturbance block (93), a middle disturbance block (94) and a lower disturbance block (95); the middle disturbance block (94) corresponds to the position of the drainage groove (91); the upper disturbance block (93) and the lower disturbance block (95) are symmetrically arranged relative to the middle disturbance block (94); the middle disturbance block (94) is used for blocking and disturbing nitrogen; the upper disturbance block (93) and the lower disturbance block (95) are used for disturbing the nitrogen dispersed by the middle disturbance block (94).

2. The protection and pressing mechanism for tab welding according to claim 1, characterized in that: The connecting portion (81) of the pressing block (8) is arranged at the upper and lower ends of the cavity portion (82); the spring guide column (7) is connected with the connecting portion (81) of the pressing block (8); the cavity portion (82) is in a hollow state and is provided with an opening at the front portion; the top end of the cavity portion (82) is provided with an upper air chamber (83); the bottom end of the cavity portion (82) is provided with a lower air chamber (85).

3. The protection and pressing mechanism for tab welding according to claim 2, characterized in that: The upper air chamber (83) and the lower air chamber (85) are communicated with the inner side of the cavity portion (82); the side of the cavity portion (82) is provided with an upper connecting hole (84) and a lower connecting hole (86); the upper connecting hole (84) is communicated with the upper air chamber (83); the lower connecting hole (86) is communicated with the lower air chamber (85).

4. The protection and pressing mechanism for tab welding according to claim 3, characterized in that: The top end opening of the upper air chamber (83) and the bottom end opening of the lower air chamber (85) are provided with end cover plates (10) which are matched in shape.

5. The protection and pressing mechanism for tab welding according to claim 4, characterized in that: The welding protection mechanism further comprises an air suction hopper (11) which is arranged on the side of the base plate (1) away from the welding protection mechanism; the opening end of the air suction hopper (11) faces the welding protection mechanism; the fixed seat (4), the connecting seat (6) and the movable seat (5) are all provided with a gap groove.

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