CN221269978U - Welding pressure head for welding ultrasonic wave adapter piece - Google Patents

Abstract

The utility model discloses a welding pressure head for welding an ultrasonic transfer piece, which comprises a welding base and an upper cover plate assembly, wherein the welding base and the upper cover plate assembly are positioned through a positioning pin and a positioning hole; a welding head welding port is arranged on the welding base, the upper port of the welding head welding port is matched with the switching piece, and a negative pressure sucker for positioning the switching piece is arranged at the inner side of the welding head welding port; the upper cover plate assembly is provided with a plurality of welding head avoiding holes, and the positions of the welding head avoiding holes and welding head welding openings are opposite; and meanwhile, the welding base is vertically penetrated, and the bottom of a welding port of the welding head is matched with the welding base. The relative positions of the switching sheet and the battery cell can be precisely positioned by arranging the welding head welding port and the positioning pin; through setting up magnet and compressing tightly the switching piece, for guaranteeing to transport and the skew that the switching piece removes and does not take place relative position when welding, adsorb the switching piece through negative pressure sucking disc, guarantee the relative position between switching piece and electric core tab and the ultrasonic welding printing three, improve the welding yields.

Description

Welding pressure head for welding ultrasonic wave adapter piece

Technical Field

The utility model relates to the field of automatic production of lithium batteries, in particular to a welding pressure head for welding an ultrasonic switching piece.

Background

With the continuous expansion of new energy automobile markets in China, the demand of dynamic lithium batteries is continuously increased. A power lithium battery generally includes a winding core, an electrolyte, a battery case accommodating the winding core and the electrolyte, and a top cover mounted on the battery case. When the battery is assembled into the shell, the connection between the winding core and the top cover is generally realized through ultrasonic welding of the battery core and the adapter piece, and the adopted ultrasonic welding mode has the characteristics of high power and firm welding.

Aiming at the scheme of welding the battery core and the adapter piece of the dynamic lithium battery, the current domestic disclosure is less; however, the welding between the battery core and the switching piece needs to be accurately positioned, and the switching piece is inclined, so that the problems of incomplete welding and printing, insufficient overcurrent area, welding head damage, poor welding, scrapping and the like are easily caused in the next working procedure and the laser welding of the top cover. Therefore, with the increasing demand of lithium ion batteries, the degree of automation of production is also increasing, and a device that facilitates rapid assembly of the switching piece and also enables precise positioning is needed.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model aims to provide a welding pressure head for welding an ultrasonic switching piece, so as to solve the problems that the existing equipment cannot accurately position the switching piece, and poor welding is generated, and the like.

Therefore, the utility model provides a welding pressure head for welding an ultrasonic transfer piece, which comprises a welding base and an upper cover plate assembly, wherein the welding base and the upper cover plate assembly are positioned through a positioning pin and a positioning hole; a welding head welding port is arranged on the welding base, the upper port of the welding head welding port is matched with the switching piece, and a negative pressure sucking disc for positioning the switching piece is arranged on the inner side of the welding head welding port; the upper cover plate assembly is provided with a plurality of welding head avoiding holes, and the welding head avoiding holes are opposite to welding openings of the welding heads; and meanwhile, the welding base is vertically penetrated, and the bottom of the welding port of the welding head is matched with the welding base.

Further, a negative pressure air passage is arranged in the welding base, and the negative pressure sucker is communicated with an external vacuum device through the negative pressure air passage.

Further, a negative pressure air pipe connector is arranged on the side face of the welding base, and the negative pressure air pipe connector is communicated with the negative pressure air passage.

Further, a plug mounting hole is formed in the welding base, is a process hole and is communicated with the negative pressure air passage.

Further, magnets are respectively arranged on the upper parts of the left end and the right end of the welding base.

Further, a magnet is also mounted on the upper cover plate assembly, and the magnet is fixed through a screw.

Further, a pair of locating pins are arranged on the welding base, and locating holes are formed in the upper cover plate assembly.

Further, the upper end of the upper cover plate component is provided with a clamping jaw connecting part, and the side surface of the clamping jaw connecting part is provided with a positioning groove.

According to the welding pressure head for welding the ultrasonic switching sheet, the welding head welding port and the positioning pin are arranged, so that the relative positions of the switching sheet and the battery cell can be precisely positioned; the magnet is arranged to press the switching piece, so that the switching piece is prevented from moving to deviate in relative position during transferring and welding, the switching piece is adsorbed by the negative pressure sucker, and the relative positions among the switching piece, the battery cell lug and the ultrasonic welding printing are ensured; therefore, the welding press head has the advantages of simple structure, low cost, quick mold change, high welding yield and the like.

In addition to the objects, features and advantages described above, the present application has other objects, features and advantages. The present application will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

FIG. 1 is a schematic perspective view of a welding head for welding an ultrasonic adapter plate according to the present utility model;

FIG. 2 is a top view of a bonding head bonding attachment locating assembly of the ultrasonic bonding attachment of the present utility model;

FIG. 3 is a side view of a welding ram for ultrasonic interposer bonding of the present utility model;

fig. 4 is a schematic structural view of the ultrasonic transfer piece of the present utility model in a welding pressure head operating state;

Description of the reference numerals

1. Welding a base; 2. an upper cover plate assembly; 3. a positioning pin; 4. a jaw connection; 5. a negative pressure suction cup; 6. a negative pressure air pipe interface; 7. welding head welding port; 8. a magnet; 9. positioning holes; 10. a screw; 11. welding head avoiding holes; 12. a plug mounting hole; 20. and a switching piece.

Detailed Description

It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.

As shown in fig. 1 to 4, a welding pressure head for welding an ultrasonic transfer piece comprises a welding base 1 and an upper cover plate assembly 2; a welding head welding port 7 is arranged on the welding base 1, the welding head welding port 7 is communicated up and down, the bottom of the welding head welding port 7 is matched with the welding base, and the upper port of the welding head welding port 7 is matched with the shape of the adapter piece 20; the negative pressure sucking disc 5 is further arranged on the inner side of the welding head welding port 7, and the transfer sheet 20 is sucked through the negative pressure sucking disc 5, so that the transfer sheet is ensured not to shift in relative position during transferring and welding.

As shown in fig. 1, the upper cover plate assembly 2 is provided with a plurality of welding head avoiding holes 11, the welding head avoiding holes 11 are opposite to the welding head welding ports 7, the welding head can conveniently pass through by arranging the welding head avoiding holes 11, and the welding head is contacted with the adapter plate 20 positioned on the welding base 1.

Wherein, welding base 1 inside is equipped with the negative pressure air flue, and negative pressure sucking disc 5 passes through negative pressure air flue and the negative pressure air pipe interface 6 intercommunication that sets up on the welding base 1 side, and negative pressure air pipe interface 6 is connected with outside vacuum apparatus, and outside vacuum apparatus work makes negative pressure sucking disc 5 produce the negative pressure through the negative pressure air flue for adsorb adapter piece 20. In addition, be equipped with end cap mounting hole 12 on the welding base 1, end cap mounting hole 12 is the technology hole and communicates with negative pressure air flue, installs the end cap on the end cap mounting hole 12, reduces the difficult way of processing under the prerequisite of guaranteeing negative pressure air flue leakproofness. It should be noted that the negative pressure sucker and the external vacuum device can be directly communicated through an air pipe.

As shown in fig. 1, a pair of positioning pins 3 are arranged on a welding base 1, a positioning hole 9 is arranged on an upper cover plate assembly 2, and the positioning pins 3 are matched with the positioning hole 9; so that the upper cover plate assembly 2 and the welding base 1 are accurately positioned. The locating pin 3 is arranged on the welding base 1 and is used for precisely locating the relative positions of the switching sheet and the battery cell.

In addition, the upper parts at the left end and the right end of the welding base 1 are respectively provided with a magnet 8, the corresponding positions on the upper cover plate assembly 2 are also provided with the magnets 8 through screws 10, the upper cover plate assembly 2 is placed on the welding base 1, and the transfer sheet is pressed through the attraction force of the magnets, so that the transfer sheet moves to generate relative position deviation during transferring and welding.

The upper end of the upper cover plate component 2 is provided with a clamping jaw connecting part 4, the side surface of the clamping jaw connecting part 4 is provided with a positioning groove, the clamping jaw connecting part 4 is used for being matched with a movable clamping jaw in assembly equipment, the upper cover plate component 2 is moved to the welding base 1 and matched with the welding base through grabbing of the movable clamping jaw, and the transfer sheet is pressed through the magnet attraction force, so that the transfer sheet moves to be deviated in relative position during transferring and welding.

The working principle of the welding pressure head for welding the ultrasonic wave transfer piece of the utility model is briefly described below with reference to the accompanying drawings.

In the scheme, the locating pin 3 is arranged on the welding base 1 and has the function of precisely locating the relative positions of the switching sheet and the battery cell; the upper cover plate assembly 2 is positioned and placed on the welding base 1 through the positioning hole, the positioning pin is installed on the welding base 1, the magnet is installed on the welding base 1, the transfer sheet is pressed by the attraction force of the magnet when the upper cover plate assembly 2 is placed, the transfer sheet is moved and does not deviate from the relative position when being transferred and welded, a negative pressure air passage is designed on the welding base 1, the vacuum chuck is used for adsorbing the transfer sheet, and the relative position between the transfer sheet, the battery cell electrode lug and the ultrasonic welding printing is guaranteed.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (8)

1. The welding pressure head for welding the ultrasonic transfer piece is characterized by comprising a welding base (1) and an upper cover plate assembly (2), wherein the welding base (1) and the upper cover plate assembly (2) are positioned through a positioning pin (3) and a positioning hole (9);

A welding head welding port (7) is arranged on the welding base (1), the upper port of the welding head welding port (7) is matched with the switching piece (20), and meanwhile, a negative pressure sucker (5) for positioning the switching piece (20) is also arranged on the inner side of the welding head welding port (7);

Wherein, a plurality of welding head avoiding holes (11) are arranged on the upper cover plate assembly (2), and the welding head avoiding holes (11) are opposite to the welding head welding openings (7); meanwhile, the welding base (1) is vertically penetrated, and the bottom of the welding head welding port (7) is matched with the welding base.

2. Welding head for ultrasonic welding of tabs according to claim 1, characterized in that the welding base (1) is internally provided with a negative pressure air channel through which the negative pressure suction cup (5) communicates with an external vacuum device.

3. The welding head for welding the ultrasonic transfer piece according to claim 2, wherein a negative pressure air pipe interface (6) is arranged on the side surface of the welding base (1), and the negative pressure air pipe interface (6) is communicated with the negative pressure air passage.

4. The welding head for welding the ultrasonic transfer piece according to claim 2, wherein a plug mounting hole (12) is formed in the welding base (1), and the plug mounting hole (12) is a process hole and is communicated with the negative pressure air passage.

5. The welding head for welding an ultrasonic transducer according to claim 1, wherein magnets (8) are respectively provided at upper portions of left and right ends of the welding base (1).

6. The welding head for ultrasonic wave patch welding according to claim 5, wherein a magnet (8) is also mounted on the upper cover plate assembly (2), and the magnet (8) is fixed by a screw (10).

7. Welding head for welding ultrasonic switching pieces according to claim 1, characterized in that the welding base (1) is provided with a pair of positioning pins (3) and the upper cover plate assembly (2) is provided with the positioning holes (9).

8. The welding head for welding ultrasonic switching pieces according to claim 1, wherein a clamping jaw connecting portion (4) is arranged at the upper end of the upper cover plate assembly (2), and a positioning groove is formed in the side face of the clamping jaw connecting portion (4).