CN103934605A - Full-automatic spot welding machine for power battery pack electrode slice - Google Patents

Abstract

The invention provides a fully automatic spot welding machine for electrode sheets of a power battery pack, which includes a track, a plurality of jigs, a jig propulsion mechanism, a jig transfer guiding mechanism, a jig push-out mechanism, two spot welding head, two three-axis motion mechanisms, and a positioning and clamping mechanism; the electrode sheets of the power battery pack to be spot-welded are placed on the fixture and advance intermittently; the two spot-welding heads are respectively located on both sides of the track and are controlled by three The axial movement mechanism controls the movement of the spot welding head along the three axes; the plurality of jigs are advanced and fed by the jig propulsion mechanism, and the jig transfer guide mechanism pushes the fed jigs to the spot welding position one by one, and then the jigs are fed by the jig. The positioning and clamping mechanism is clamped, and then the spot welding head is used to push out the material through the jig pushing mechanism after spot welding. The invention is an intelligent full-automatic spot welding machine for the electrode pieces of a power battery pack with high efficiency, low consumption, high welding quality and easy connection.

Description

Fully automatic spot welding machine for power battery pack electrodes

technical field

The invention relates to an automatic spot welding equipment for electrode sheets of power battery packs, especially suitable for the field of spot welding of electrode sheets of medium and large battery packs such as electric tools and electric vehicles.

Background technique

Large and medium-sized battery packs are mainly used in power tools, notebook computers, electric vehicles and other fields. At present, most manufacturers in China use semi-automatic spot welding, and its shortcomings are mainly manifested in:

(1) The welding labor intensity is high and the welding efficiency is low.

(2) The qualified rate of welding is low, and it is easy to have defects such as virtual welding, deformation of the battery core, bonding of welding needles, and uneven solder joints.

(3) The dedicated spot welding power supply requires a lot of investment, and the utilization rate is low, which increases the cost of equipment.

(4) The existing special equipment is relatively independent and cannot be connected with the customer's production line, which is not conducive to the transformation of the production line and affects the improvement of production efficiency.

Contents of the invention

The technical problem to be solved by the present invention, in view of the above shortcomings, is to provide an intelligent full-automatic spot welding machine for electrode sheets of a pipelined power battery pack with high efficiency, low consumption, high welding quality and easy connection.

The present invention is realized in the following way: a fully automatic spot welding machine for electrode sheets of a power battery pack, including a track, a plurality of jigs, a jig propulsion mechanism, a jig transfer guiding mechanism, a jig push-out mechanism, Two spot welding heads, two three-axis motion mechanisms, and a positioning and clamping mechanism; the electrode sheets of the power battery pack to be spot-welded are placed on the jig, and the jig advances intermittently on the track; the The two spot welding heads are respectively located on both sides of the track and are respectively arranged on the three-axis motion mechanism, and the three-axis motion mechanism controls the spot welding head to move along the three axes; the fixture propulsion mechanism and the fixture The push-out mechanism is respectively set at the feed end and the discharge end of the track, and the jig transfer guide mechanism is set between the feed end and the discharge end; the positioning and clamping mechanism is set beside the spot welding position; A plurality of jigs are fed by the jig propulsion mechanism, and the jig transfer guide mechanism pushes the fed jigs to the spot welding position one by one, and then is clamped by the positioning and clamping mechanism, and then the spot welding head After spot welding, the material is pushed out by the jig push-out mechanism.

Further, the jig propulsion mechanism includes a Z-shaped shifting block, a left and right telescopic mechanism, and a front and rear propulsion mechanism, and the Z-shaped shift block is respectively connected with the horizontal telescopic mechanism and the front and rear propulsion mechanism.

Further, the jig push-out mechanism includes a Z-shaped shifting block, a left-right telescopic mechanism, and a front-and-back propulsion mechanism, and the Z-shaped shift block is respectively connected with the horizontal telescopic mechanism and the front-rear propulsion mechanism.

Further, the left and right telescopic mechanisms and the front and rear propulsion mechanisms are both cylinders.

Further, the jig transfer guide mechanism includes two L-shaped shifting blocks, two guide plates, a moving plate, a threaded rod and a motor, and the two L-shaped shifting blocks are arranged at the rear end of the moving plate and located at On both sides of the guide rail, a left and right telescopic cylinder is connected between the two L-shaped shifting blocks. The two guide plates are at the front end of the moving plate and are located on both sides of the guide rail. Between the two guide plates Connect another left and right telescopic cylinder, and the two left and right telescopic cylinders are located below the guide rail, and the guide plate is provided with two guide columns facing each other. The jig is provided with a plurality of spot welding holes matching the guide columns. The moving plate passes through A guide seat is sheathed on the screw rod, and one end of the screw rod is connected to the motor.

Further, the distance between the two L-shaped shifting blocks and the two guide plates corresponds to the length of the two stations.

Further, the spot welding head includes a body, a welding needle clamping device, a welding needle and a pressure regulating device, the welding needle fixing seat and the pressure regulating device are respectively arranged at two ends of the body, and the welding needle is fixed on the welding needle Clamp on and extend toward the jig.

Further, the spot welding head also includes a positive spot welding shaft rotation device, the positive spot welding shaft rotation device includes a rotating head, a rotating shaft and a rotating cylinder, one end of the rotating head is connected to the welding needle clamping device, and the other end The rotating shaft is passed through the middle section of the body, and the end of the rotating shaft is also connected with a pressure adjustment device, and the rotating cylinder is arranged in the middle of the rotating shaft to push the rotating shaft to rotate.

Further, the welding needle clamping device includes a welding needle chuck and a welding needle fixing seat, the welding needle chuck is arranged on the welding needle fixing seat, and a bar-shaped Groove, the bar-shaped groove adjusts the notch size of the bar-shaped groove by screws.

Further, the three-axis motion mechanism includes an X-axis motion mechanism, a Y-axis motion mechanism, a Z-axis motion mechanism and a support seat, the spot welding head is arranged on the X-axis motion mechanism, and the X-axis motion mechanism It is arranged on the Y-axis movement mechanism, and the Y-axis movement mechanism is arranged on the Z-axis movement mechanism, and the Z-axis movement mechanism is arranged on the supporting seat.

Further, the X-axis motion mechanism includes an X-axis motor, an X-axis screw, and an X-axis moving seat, the spot welding head is set on the X-axis moving seat, and the X-axis moving seat is sleeved on the On the X-axis screw rod, one end of the X-axis screw rod is connected to the X-axis motor; the Y-axis motion mechanism includes a Y-axis motor, a Y-axis screw rod and a Y-axis moving seat, and the X-axis motion mechanism is located on the On the Y-axis moving seat, the Y-axis moving seat is sleeved on the Y-axis screw rod, and one end of the Y-axis screw rod is connected to the Y-axis motor; the Z-axis motion mechanism includes a Z-axis motor, a Z-axis wire Rod and Z-axis moving seat, the Y-axis motion mechanism is set on the Z-axis moving seat, the Z-axis moving seat is sleeved on the Z-axis screw, and one end of the Z-axis screw is connected to the Z A shaft motor; the Z-axis motion mechanism is arranged on the support seat.

Further, the jig includes a front plate, a rear plate, a left guard plate and a right guard plate, the front plate, the rear plate, the left guard plate and the right guard plate are connected to form a hollow box, and the left guard plate and the right guard plate are connected to form a hollow box. The plurality of spot welding holes are provided on the right guard plate, and the electrode sheets of the power battery pack to be spot welded are placed in the hollow box, and the two ends are pierced through the spot welding holes.

Further, a jig limiting mechanism is provided below the track, and the jig limiting mechanism includes a plurality of rotating blocks that can protrude from the track from bottom to top, and also includes a rotating shaft arranged below the track, The rotating shaft fixing seat, the rotating paddle, the U-shaped push rod, the limit cylinder and the cylinder fixing base; On the seat and can rotate around the fixed seat of the rotating shaft, the rotating plectrum is provided with a long hole, one end of the U-shaped push rod is connected to the limit cylinder, and the other end is passed through the long hole, and the limit cylinder It is fixed under the track through the cylinder fixing seat.

The invention has the following advantages: the three-axis motion mechanism controls the movement of the spot welding head along the three axes, and can control the spot welding action of the spot welding head and can precisely position it. Use the jig propulsion mechanism to push the jig into the material, use the jig transfer guide mechanism to link the station jig to advance and position, then clamp the jig through the clamping mechanism, and use the jig push-out mechanism to push the jig out of the material, three mechanisms Combined to control the feed and transfer movement of the fixture. In addition, the spot welding head is equipped with a pressure regulating device and a positive pole spot welding shaft rotation device. Before spot welding, the pressure can be adjusted according to needs. After the spot welding is completed, the positive pole rotates to prevent sticking of the needle. Needles are convenient and the spacing of welding needles can be adjusted in a large range, and it has strong adaptability to different nickel sheets. Modular spot welding head design, easy installation and replacement, can adapt to a variety of spot welding machines, high versatility. The Zhongtong assembly line structure is easy to connect with the customer's production line, which is conducive to the transformation and upgrading of the production line and improves production efficiency.

Description of drawings

The present invention will be further described below in conjunction with the embodiments with reference to the accompanying drawings.

Fig. 1 is the overall three-dimensional structure schematic diagram of the automatic spot welding machine of the present invention.

Fig. 2 is a schematic diagram of the overall top view structure of the automatic spot welding machine of the present invention.

Fig. 3 is a schematic structural view of the jig of the present invention.

Fig. 4 is a schematic structural view of the jig propulsion mechanism of the present invention.

Fig. 5 is a schematic structural view of the jig transfer guide mechanism of the present invention.

Fig. 6 is a schematic diagram of the cooperative structure of the jig transfer guide mechanism, the positioning clamping mechanism and the guide rail in the present invention.

Fig. 7 is a schematic structural view of the spot welding head of the present invention.

Fig. 8 is a schematic structural diagram of the three-axis motion mechanism of the present invention.

Fig. 9 is a schematic structural view of the fixture limiting mechanism of the present invention.

Detailed ways

As shown in Figures 1 to 9, the fully automatic spot welding machine of the present invention includes a track 1, a plurality of jigs 2, a jig propulsion mechanism 3, a jig transfer guide mechanism 4, and a jig pushing mechanism 5. Two spot welding heads 6, two three-axis motion mechanisms 7, and a positioning clamping mechanism 8; the electrode sheets of the power battery pack to be spot-welded (not shown) are placed on the fixture 2, The jig 2 advances intermittently on the track 1; the two spot welding heads 6 are located on both sides of the track 1 and are respectively arranged on a three-axis motion mechanism 7, and are controlled by the three-axis motion mechanism 7 The spot welding head 6 moves along three axes; the fixture propulsion mechanism 3 and the fixture push-out mechanism 5 are respectively arranged on the feed end 11 and the discharge end 12 of the track 1, and the fixture transfer guide mechanism 4 is arranged on the feed end Between the feed end 11 and the discharge end 12; the positioning and clamping mechanism 8 is arranged beside the spot welding position; the plurality of jigs 2 are advanced by the jig advancing mechanism 3, and the jig transfer guiding mechanism 4 will The fixtures 2 after feeding are pushed to the spot welding position one by one and then clamped by the positioning and clamping mechanism 8, and then released by the fixture pushing mechanism 5 after spot welding by the spot welding head 6.

As shown in Figure 3, the main function of the jig 2 is to load the power battery pack and its electrode sheets, which includes a front plate 21, a rear plate 22, a left guard plate 23 and a right guard plate 24, the front plate 21, the rear plate Plate 22, left guard plate 23 and right guard plate 24 are connected to form a hollow casing, and a plurality of spot welding holes 25 are all provided on the left guard plate 23 and right guard plate 24. In the present embodiment, front plate 21 and The rear plate 22 is actually a whole, and the electrode sheets of the power battery pack to be spot-welded are placed in the hollow box and positioned. The main function of the spot welding hole 25 is to allow the welding needle to pass through the spot welding hole 25 to spot weld the electrode sheet of the power battery pack.

For the convenience of description, the position of the track between the feed end 11 and the discharge end 12 is divided into four positions A, B, C, and D, where A is the feed position, B is the preparation position, and C is the spot welding position. position, D is the discharge position.

As shown in Figure 4, the fixture propulsion mechanism 3 includes a Z-shaped shifting block 31, a left and right telescopic mechanism 32, and a front and rear propulsion mechanism 33. The propulsion mechanism 33 is connected. In this embodiment, the structure of the jig pushing mechanism 5 and the jig pushing mechanism 3 are completely the same, and will not be repeated here. The left and right telescopic mechanisms 32 and the front and rear propulsion mechanisms 33 are cylinders.

After the jig 2 enters the A position of the guide rail 1 from the feeding end 11, the Z-shaped shifting block 31 of the jig advancing mechanism 3 extends into the rear end of the jig 2 under the action of the left and right telescopic mechanisms 32, and then Under the action of the front and rear propulsion mechanism 33, the Z-shaped shifting block 31 moves forward to push the jig 2 at position A to position B, and then under the action of the left and right telescopic mechanisms 32, the Z-shaped shifting block 31 moves out of the jig 2's rear end, complete a feed. When discharging, it is the same principle, the jig push-out mechanism 5 moves the jig 2 at the D position to the discharge end 12 .

As shown in Fig. 5 and Fig. 6, the described jig transfer guide mechanism 4 includes two L-shaped shifting blocks 41, two guide plates 42, a moving plate 43, a threaded rod 45 and a motor 46, and the two L-shaped shifting blocks Block 41 is located at the rear end of described moving plate 43 and is positioned at the both sides of described guide rail 1, and a left and right telescopic cylinder 47 is connected between described two L-shaped shifting blocks 41, and described two guiding plates 42 are positioned at described moving plate The front end of 43 is located on both sides of the guide rail 1, another left and right telescopic cylinder 48 is connected between the two guide plates 42, and the two left and right telescopic cylinders 47 (48) are located below the guide rail 1, and the guide plates 42 face each other Two guide columns 422 are set, and the guide columns 422 can be matched with the spot welding holes 25 on the fixture 2 for positioning, and the moving plate 43 is sleeved on the screw mandrel 45 by a guide seat 432, and the screw mandrel 45 One end of the motor 46 is connected. The distance between the two L-shaped shifting blocks 41 and the two guide plates 42 corresponds to the length of two stations. In this way, a double station is formed, one of which is a spot welding station, and the other station follows the spot welding station to prepare for the next spot welding, so that the spot welding operation forms a compact assembly line operation.

After the jig propulsion mechanism 3 dials the jig 2 from the feed end 11 into the B position of the guide rail 1, the two L-shaped shifting blocks 41 of the jig transfer guide mechanism 4 act on the left and right telescopic cylinders 47. Shrink inwardly and hold the jig 2 on position B tightly. At this time, the two guide plates 42 also shrink inwardly under the action of the left and right telescopic cylinders 48, so that the guide column 422 extends into the spot welding position at the front end, that is, position C. Then, under the action of the motor 46 and the screw mandrel 45, the two L-shaped shifting blocks 41 and the two guide plates 42 move forward together by one station, so that the position B on the Fixture 2 reaches position C, and at the same time move fixture 2 that was originally on the spot welding position to position D. Move out by jig pushing out mechanism 5 again.

As shown in Figure 7, the spot welding head 6 includes a body 61, a welding needle clamping device 62, a welding needle 63 and a pressure regulating device 64, and the welding needle clamping device 62 and the pressure regulating device 64 are respectively arranged on the body 61 The two ends of the welding needle 63 are fixed on the welding needle clamping device 62 and extend to the jig 2 . The spot welding head 6 also includes a positive pole spot welding shaft rotating device 65, the positive pole spot welding shaft rotating device 65 includes a rotating head 651, a rotating shaft 652 and a rotating cylinder 653, and one end of the rotating head 651 is connected to a welding pin for clamping The other end of the device 62 passes through the middle section of the body 61 through the rotating shaft 652 , the end of the rotating shaft 652 is also connected to the pressure adjustment device 64 , and the rotating cylinder 653 is set in the middle of the rotating shaft 652 to push the rotating shaft 652 to rotate. The spot welding head 6 is equipped with a pressure regulating device 64 and a positive pole spot welding shaft rotating device 65. Before spot welding, the pressure of the spot welding action can be adjusted through the pressure regulating device 64 as required. After the spot welding is completed, the positive pole spot welding shaft rotating device 65 Make the welding needle 63 as the positive pole and do the rotating action to prevent the needle from sticking. Wherein, the welding needle clamping device 62 includes a welding needle chuck 621 and a welding needle fixing seat 622, the welding needle chuck 621 is arranged on the welding needle fixing seat 622, and a bar-shaped groove 623 is opened on the welding needle chuck 621, The clamp is elastically deformed by external screws (not shown in the figure) to clamp the welding needle 63; in this way, it is not only reliable in clamping but also convenient for needle replacement, and there is a waist-shaped groove on the welding needle fixing seat 622 (not visible in this view) , so that the spacing of welding pins can be adjusted in a large range, and it has strong adaptability to different nickel sheets.

As shown in Figure 8, the three-axis motion mechanism 7 includes an X-axis motion mechanism 71, a Y-axis motion mechanism 72, a Z-axis motion mechanism 73 and a support seat 74, and the spot welding head 6 is located on the X-axis motion mechanism. On the mechanism 71, the X-axis motion mechanism 71 is set on the Y-axis motion mechanism 72, the Y-axis motion mechanism 72 is set on the Z-axis motion mechanism 71, and the Z-axis motion mechanism 73 is set on the support seat 74 superior. The Z-axis motion mechanism 73 can move up and down relative to the support seat 74, and simultaneously drives the Y-axis motion mechanism 72 to move up and down; the Y-axis motion mechanism 72 can move back and forth relative to the Z-axis motion mechanism 73, and simultaneously drives the X-axis motion mechanism 71 Forward and backward movement; the X-axis motion mechanism 71 can move towards and away from the guide rail 1, and drive the spot welding head 6 to move towards and away from the guide rail 1 at the same time. Therefore, the three-axis motion mechanism 7 can drive the spot welding head 6 to move back and forth in the X, Y and Z axis directions, thereby realizing the precise spot welding action of the spot welding head 6 .

The X-axis motion mechanism 71 includes an X-axis motor 711, an X-axis screw rod 712, and an X-axis moving seat 713. The spot welding head 6 is arranged on the X-axis moving seat 713, and the X-axis moving seat 713 covers Located on the X-axis screw rod 712, one end of the X-axis screw rod 712 is connected to the X-axis motor 711; the X-axis motor 711 drives the X-axis screw rod 712 to rotate, so that the X-axis moving seat 713 drives the spot welding head 6 along the Move back and forth in the X-axis direction.

The Y-axis motion mechanism 72 includes a Y-axis motor 721, a Y-axis screw rod 722 and a Y-axis moving seat 723. The X-axis moving mechanism 71 is arranged on the Y-axis moving seat 723, and the Y-axis moving seat 723 Sleeved on the Y-axis screw 722, one end of the Y-axis screw 722 is connected to the Y-axis motor 721; the Y-axis motor 721 drives the Y-axis screw 722 to rotate, so that the Y-axis moving seat 723 drives the X-axis movement mechanism 71 moves back and forth along the Y-axis direction.

The Z-axis motion mechanism 73 includes a Z-axis motor 731, a Z-axis screw rod 732 and a Z-axis moving seat 733. The Y-axis moving mechanism 72 is arranged on the Z-axis moving seat 713, and the Z-axis moving seat 733 It is sleeved on the Z-axis screw 732 , and one end of the Z-axis screw 732 is connected to the Z-axis motor 731 ; the Z-axis movement mechanism 73 is set on the support base 74 . The Z-axis motor 731 drives the Z-axis screw rod 732 to rotate, so that the Z-axis moving seat 713 drives the Y-axis moving mechanism 72 to move back and forth along the Z-axis direction.

As shown in Figure 6 again, positioning clamping mechanism 8 comprises two clamping pieces 81 and a clamping cylinder 82, and described two clamping pieces 81 are located at the both sides of spot welding position place guide rail 1, and described clamping cylinder 82 It is connected between the two clips 81 and located below the guide rail 1 . When it is necessary to clamp the jig 2 on the spot welding position, firstly the clamping cylinder 82 shrinks, driving the two clamping pieces 81 to shrink inwards to clamp the jig 2, and when it is released, the clamping cylinder 82 stretches to drive The two clamping pieces 81 move outward so as to loosen the jig 2 .

As shown in Fig. 1 and Fig. 6 and Fig. 9, a jig limit mechanism 9 is also provided below the track 1, and the jig limit mechanism 9 includes a plurality of rotating stops that can extend out of the track from bottom to top. The sheet 91 also includes a rotating shaft 92, a rotating shaft fixing seat 93, a rotating dial 94, a U-shaped push rod 95, a limit cylinder 96 and a cylinder fixing seat 97 arranged below the track, and the rotating block 91 and the rotating dial The pieces 94 are all fixedly connected on the rotating shaft 92, the two ends of the rotating shaft 92 are arranged on the rotating shaft fixing seat 93 and can rotate around the rotating shaft fixing seat 93, and the rotating plectrum 94 is provided with an elongated hole 942, One end of the U-shaped push rod 95 is connected to the limiting cylinder 96 , and the other end is passed through the elongated hole 942 , and the limiting cylinder 96 is fixed below the track 1 through the cylinder fixing seat 97 . In this way, when the jig is sensed, the limit cylinder 96 is pushed out, and the rotating paddle 94 is pushed to drive the rotating shaft 92 to rotate, thereby driving the rotating blocking piece 91 to rotate, thereby protruding from bottom to top on the track 1 or sinking into the track Next, the track 1 is also provided with an elongated hole 15 (see FIG. 6 ) for the space required for the rotation of the rotating catch 91 .

Shown in conjunction with Fig. 1 to Fig. 9, the working principle of the present invention is as follows:

1. The electrode sheet of the power battery pack (not shown) to be spot-welded is placed on the jig 2, and after the jig 2 enters the position A of the guide rail 1 from the feed end 11, first advance the jig Under the action of the mechanism 3, the jig 2 enters the position B from the position A of the track 1, and then moves to the position C by the jig transfer guide mechanism 4, and then is limited by the jig limit mechanism 9, and at the same time passes the positioning clip The clamping mechanism 8 clamps the jig 2 at the C position. At this time, the spot welding head 6 is used to perform the welding on the electrode sheets of the power battery pack in the jig 2 at the spot welding position (that is, the C position) through two three-axis motion mechanisms 7 . Spot welding operation.

2. When the spot welding of the jig 2 on the spot welding position (that is, position C) is completed, the positioning and clamping mechanism 8 loses its clamping, and the limit mechanism 9 loses its limit, and the jig advancing mechanism 3 and jig transfer The guide mechanism 4 and the jig push-out mechanism 5 act synchronously to push the jigs 2 at positions A, B and C forward by a distance of one station. At this time, the spot welding head 6 is used for spot welding the electrode sheets of the power battery pack in the jig 2 at the spot welding position (ie position C) through two three-axis motion mechanisms 7 .

3. When the spot welding of the jig 2 on the spot welding position (that is, position C) is completed, the positioning and clamping mechanism 8 loses its clamping, and the limit mechanism 9 loses its limit. The jig advancing mechanism 3 and the jig transfer The guide mechanism 4 and the jig push-out mechanism 5 act synchronously to push the jig 2 at the A position, the B position, the C position and the D position forward by the distance of one station. Then, the spot welding head 6 is used for spot welding the electrode sheets of the power battery pack in the jig at position C through two three-axis motion mechanisms 7 . Repeatedly, the assembly line operation of spot welding can be carried out.

To sum up, the advantages of the automatic spot welding machine of the present invention are: the three-axis motion mechanism controls the movement of the spot welding head along the three axes, and can control the spot welding head to do spot welding and can accurately position. Use the jig propulsion mechanism to push the jig into the material, use the jig transfer guide mechanism to link the station jig to advance and position, then clamp the jig through the clamping mechanism, and use the jig push-out mechanism to push the jig out of the material, three mechanisms Combined to control the feed and transfer movement of the fixture. The spot welding head is equipped with a pressure adjustment device and a positive pole spot welding shaft rotation device (how to realize it). Before spot welding, the pressure can be adjusted according to needs. After the spot welding is completed, the positive pole rotates to prevent sticking needles. The welding needle clamping mechanism not only clamps Reliable, easy to change pins, and the spacing of welding pins can be adjusted in a large range, and it has strong adaptability to different nickel sheets (how to realize it). Modular spot welding head design, easy installation and replacement, can adapt to a variety of spot welding machines, high versatility. The Zhongtong assembly line structure is easy to connect with the customer's production line, which is conducive to the transformation and upgrading of the production line and improves production efficiency.

Although the specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments we have described are only illustrative, rather than used to limit the scope of the present invention. Equivalent modifications and changes made by skilled personnel in accordance with the spirit of the present invention shall fall within the protection scope of the claims of the present invention.

Claims (14)

1. a full-automatic spot welding machine for electrode plates of power battery pack, is characterized in that: comprise a track, a plurality of tool, a tool propulsive mechanism, a tool transfer guiding mechanism, a tool ejecting mechanism, two spot welding heads, Liang Ge three-axis moving mechanism and positioning and clamping mechanisms; Describedly treat that the electrode plates of power battery pack of spot welding is placed on described tool, described tool intermittently advances in orbit; Described in described two spot welding heads lay respectively at the both sides of track and are located at one respectively in three-axis moving mechanism, and by this three-axis moving mechanism controls spot welding head along three-axis moving; Described tool propulsive mechanism and tool ejecting mechanism are located at respectively feed end and the discharge end of track, and described tool transfer guiding mechanism is located between feed end and discharge end; Described positioning and clamping mechanism is located at by a welding position; Described a plurality of tool advances charging by tool propulsive mechanism, and tool transfer guiding mechanism is shifted one by one the tool after charging onto some welding position and then by described positioning and clamping mechanism, clamped, then by described tool ejecting mechanism, releases discharging by described spot welding head point postwelding.

2. the full-automatic spot welding machine of electrode plates of power battery pack according to claim 1, it is characterized in that: described tool propulsive mechanism comprises a Z-shaped shifting block, a left and right telescoping mechanism and a front and back propulsive mechanism, described Z-shaped shifting block is connected with described transversal stretching mechanism and front and back propulsive mechanism respectively.

3. the full-automatic spot welding machine of electrode plates of power battery pack according to claim 1 and 2, it is characterized in that: described tool ejecting mechanism comprises a Z-shaped shifting block, a left and right telescoping mechanism and a front and back propulsive mechanism, described Z-shaped shifting block is connected with described transversal stretching mechanism and front and back propulsive mechanism respectively.

4. the full-automatic spot welding machine of electrode plates of power battery pack according to claim 3, is characterized in that: described left and right telescoping mechanism and front and back propulsive mechanism are cylinder.

5. the full-automatic spot welding machine of electrode plates of power battery pack according to claim 1, it is characterized in that: described tool transfer guiding mechanism comprises two L shaped shifting blocks, two guide plates, one movable plate, one screw mandrel and a motor, described two L shaped shifting blocks are located at the rear end of described movable plate and are positioned at the both sides of described guide rail, between described two L shaped shifting blocks, connect a left and right telescopic cylinder, described two guide plates are at the front end of described movable plate and be positioned at the both sides of described guide rail, between described two guide plates, connect another left and right telescopic cylinder, and two left and right telescopic cylinders are positioned at the below of guide rail, described guide plate arranges two leads in opposite directions, described tool is provided with a plurality of some welding holes that mate with lead, described movable plate is set on described screw mandrel by a guide holder, one end of described screw mandrel connects described motor.

6. the full-automatic spot welding machine of electrode plates of power battery pack according to claim 1, is characterized in that: the length of corresponding two stations of distance of described two L shaped shifting blocks and two guide plates.

7. the full-automatic spot welding machine of electrode plates of power battery pack according to claim 6, it is characterized in that: described spot welding head comprises body, capillary clamping device, capillary and pressure-regulating device, described capillary holder, pressure-regulating device are located at respectively the two ends of body, and described capillary is fixed on capillary clamping device and stretches to tool.

8. the full-automatic spot welding machine of electrode plates of power battery pack according to claim 7, it is characterized in that: described spot welding head also comprises an anodal spot welding shaft rotating device, described anodal spot welding shaft rotating device comprises swivel head, rotating shaft and rotary cylinder, described swivel head one end connects capillary clamping device, the other end is arranged in the stage casing of body by rotating shaft, rotation the tip of the axis also connects described pressure regulation device, and the middle part that rotary cylinder is located at rotating shaft promotes rotating shaft rotation.

9. the full-automatic spot welding machine of electrode plates of power battery pack according to claim 7, it is characterized in that: described capillary clamping device comprises capillary chuck and capillary holder, capillary chuck is located on capillary holder, on capillary chuck, offer for clamping the bar-shaped trough of described capillary, this bar-shaped trough regulates the notch size of bar-shaped trough by screw.

10. the full-automatic spot welding machine of electrode plates of power battery pack according to claim 1, it is characterized in that: described three-axis moving mechanism comprises X-axis motion, Y-axis motion, Z axis motion and a supporting seat, described spot welding head is located on described X-axis motion, described X-axis motion is located on described Y-axis motion, described Y-axis motion is located on Z axis motion, and described Z axis motion is located on supporting seat.

The full-automatic spot welding machine of 11. electrode plates of power battery packs according to claim 1, is characterized in that:

Described X-axis motion comprises X-axis motor, X-axis screw mandrel and X-axis Mobile base, and described spot welding head is located on described X-axis Mobile base, and described X-axis Mobile base is set on described X-axis screw mandrel, and one end of described X-axis screw mandrel connects X-axis motor;

Described Y-axis motion comprises y-axis motor, Y-axis screw mandrel and Y-axis Mobile base, and described X-axis motion is located on described Y-axis Mobile base, and the moving cover for seat of described y-axis shift is located on described Y-axis screw mandrel, and one end of described Y-axis screw mandrel connects y-axis motor;

Described Z axis motion comprises Z axis motor, Z axis screw mandrel and Z axis Mobile base, and described Y-axis motion is located on described Z axis Mobile base, and described Z axis Mobile base is set on described Z axis screw mandrel, and one end of described Z axis screw mandrel connects Z axis motor; Described Z axis motion is located on supporting seat.

The full-automatic spot welding machine of 12. electrode plates of power battery packs according to claim 1, it is characterized in that: described positioning and clamping mechanism comprises two clamp clips and a clamping cylinder, described two clamp clips are located at a both sides for welding position place guide rail, and described clamping cylinder is connected between two clamp clips and is positioned at the below of described guide rail.

The full-automatic spot welding machine of 13. electrode plates of power battery packs according to claim 5, it is characterized in that: described tool comprises header board, rear plate, left backplate and right backplate, described header board, rear plate, left backplate and right backplate are connected to form the casing of hollow, on described left backplate and right backplate, be equipped with described plurality of points welding hole, describedly treat that the electrode plates of power battery pack of spot welding is placed in the casing of described hollow, two ends are located on described some welding hole.

The full-automatic spot welding machine of 14. electrode plates of power battery packs according to claim 1, it is characterized in that: the below of described track is also provided with tool position-limit mechanism, described tool position-limit mechanism comprises a plurality of rotation catch that can stretch out track from bottom to top, the rotating shaft that is located at track below, rotating shaft holder, rotation plectrum, U-shaped push rod, limiting cylinder and cylinder holder; Described rotation catch and rotation plectrum are all fixedly connected on rotating shaft, described rotating shaft terminal is located on rotating shaft holder and can rotates around rotating shaft holder, described rotation plectrum is provided with elongated hole, U-shaped push rod one end is connected on limiting cylinder, the other end is arranged in described elongated hole, and described limiting cylinder is fixed on the below of track by cylinder holder.