CN215919402U

CN215919402U - Prevent ultrasonic welding head structure that utmost point ear broke

Info

Publication number: CN215919402U
Application number: CN202122448440.1U
Authority: CN
Inventors: 石新华; 姜大为
Original assignee: Wuxi Jiaocheng Intelligent Technology Co ltd
Current assignee: Wuxi Jiaocheng Intelligent Technology Co ltd
Priority date: 2021-10-12
Filing date: 2021-10-12
Publication date: 2022-03-01
Anticipated expiration: 2031-10-12

Abstract

The utility model discloses an ultrasonic welding head structure for preventing a tab from being broken, which comprises an ultrasonic welding head, wherein welding teeth are arranged on the working surface of the ultrasonic welding head, the welding teeth comprise a conical base station, and a spherical surface is arranged at one end of each welding tooth, which is far away from the ultrasonic welding head. This prevent utmost point ear ruptured ultrasonic welding head structure, the base station that will weld the tooth sets up to conical and the base station one end of keeping away from ultrasonic welding head sets up to spherical face, has both guaranteed the ability of piercing the weldment, again because the top is spherical face, the difficult superficial welding that destroys. The welding area is composed of a plurality of welding teeth, the pressure and the amplitude of each welding tooth are guaranteed to be uniform and stable, and single welding tooth damage caused by local abrasion is avoided.

Description

Prevent ultrasonic welding head structure that utmost point ear broke

Technical Field

The utility model relates to the field of ultrasonic welding, in particular to an ultrasonic welding head structure for preventing a tab from being broken.

Background

At present, the ultrasonic welding of the power battery adopts a form of adding a protective sheet to prevent the electrode lug foil of a welding and printing area from being broken. However, after the protection sheet is welded, the protection sheet may cut off the tab foil during assembly, which may result in explosion of the battery and potential safety hazard. The elimination of the protective sheet can reduce the manufacturing process of the battery, reduce the weight of the battery, and improve the capacity and safety performance of the battery.

The working principle of the ultrasonic metal welding machine is that an energy converter is utilized to convert electric energy into high-frequency mechanical vibration energy, under the condition of pressurization, two metal sheets (lug foils) to be welded are clamped between a welding head and a bottom die, after high-frequency vibration waves are transmitted to the surface of the upper metal sheet along the welding head, the welding head drives the upper metal sheet to vibrate in a high frequency mode, the bottom die fixes the lower metal sheet, therefore, high-frequency friction is generated between the two metal sheets, molecules at the joint of the metal sheets permeate each other to be combined together, and tight connection is formed.

In order to increase the friction between the welding head and the material and ensure that the welding head can drive the welded material to vibrate at high frequency, a plurality of welding teeth are processed on the working surface of the welding head pressing the material to prevent the material from cracking during welding, and referring to fig. 1 and 2, spherical teeth or conical teeth are commonly used.

However, the periphery of the spherical teeth is smooth, so that the phenomenon of slipping is easy to occur, and particularly when the pressure is low, the conical teeth are easy to penetrate into a welding part, but the surface layer is easy to perforate; resulting in poor weld quality.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides an ultrasonic welding head structure for preventing a tab from being broken, and solves the problems in the background art.

In order to achieve the purpose, the utility model is realized by the following technical scheme: the utility model provides a prevent cracked ultrasonic welding head structure of utmost point ear, includes the ultrasonic welding head, has on the working face of ultrasonic welding head and welds the tooth, the tooth that welds include conical base station, the one end that the ultrasonic welding head was kept away from to the tooth is equipped with spherical face.

Further inject, foretell an ultrasonic bonding tool structure that prevents utmost point ear fracture, wherein, the edge of ultrasonic bonding tool working face is equipped with fillet transition face.

Further inject, foretell an ultrasonic welding head structure for preventing utmost point ear is cracked, wherein, be equipped with the transition inclined plane between fillet transition face and the working face.

Further defined, the ultrasonic welding head structure for preventing the tab from cracking is described, wherein the welding teeth are distributed on the working face in a rectangular or annular array.

Further, the ultrasonic welding head structure for preventing the tab from cracking is further defined, wherein a gap with the same distance is reserved between every two adjacent welding teeth.

Further, the ultrasonic welding head structure for preventing the tab from being broken is further limited, wherein the surface of the welding tooth is provided with a wear-resistant coating and an anti-sticking coating.

The utility model has the following beneficial effects: this prevent utmost point ear ruptured ultrasonic welding head structure, the base station that will weld the tooth sets up to conical and the base station one end of keeping away from ultrasonic welding head sets up to spherical face, has both guaranteed the ability of piercing the weldment, again because the top is spherical face, the difficult superficial welding that destroys. The welding area is composed of a plurality of welding teeth, the pressure and the amplitude of each welding tooth are guaranteed to be uniform and stable, and single welding tooth damage caused by local abrasion is avoided.

Drawings

FIG. 1 is a schematic structural view of a prior art ultrasonic horn;

FIG. 2 is another schematic view of a prior art ultrasonic horn;

FIG. 3 is a top view of the present invention;

FIG. 4 is a cross-sectional view of the present invention;

fig. 5 is an operation diagram of the present invention when welding is performed.

In the figure: 1. an ultrasonic horn; 2. welding teeth; 21. a base station; 22. a spherical surface; 3. a fillet transition surface; 4. a transition bevel; 5. a transducer; 6. an amplitude modulator; 7. welding parts; 8. and (4) carrying out ultrasonic bottom die.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 3-4, the present invention provides a technical solution: the utility model provides a prevent cracked ultrasonic bonding tool 1 structure of utmost point ear, includes ultrasonic bonding tool 1, has on ultrasonic bonding tool 1's the working face and welds tooth 2, weld tooth 2 and include conical base station 21, weld the one end that tooth 2 kept away from ultrasonic bonding tool 1 and be equipped with spherical face 22.

The edge of the working face of the ultrasonic welding head 1 is provided with a fillet transition face 3, a transition inclined face 4 is arranged between the fillet transition face 3 and the working face, an inclined face and a fillet are added in a welding area and a non-welding area, the deformation is small, the welding surface is guaranteed to be free of damage and cracks, and the welding quality is improved.

The welding teeth 2 are distributed on the working surface in a rectangular or annular array, and can be randomly arranged at random.

Gaps with equal distance are reserved between two adjacent welding teeth 2.

The surface of the welding tooth 2 is provided with a wear-resistant coating and an anti-sticking coating, so that the service life of the welding tooth 2 can be effectively prolonged, and the welding quality is improved.

Referring to fig. 5, the transducer 5 is connected to the ultrasonic welding head 1 through the amplitude modulator 6, during specific welding, the cylinder drives the ultrasonic welding head 1 to descend, a certain pressure needs to be matched, when the ultrasonic welding head 1 contacts the weldment 7, namely, the tab foil, does not pierce through the electrode and is easy to pierce through the tab foil, the tab foil is compressed with the ultrasonic bottom die 8, meanwhile, the ultrasonic system works to generate high-frequency friction, and molecules permeate and are combined together to form tight connection. The cylinder lifts up and accomplishes the welding seal, and the slope face in non-welding seal region is smooth-going excessive with the fillet face, can prevent upwards or downward deformation too big utmost point ear foil from breaking, the welding that causes is bad.

This prevent cracked ultrasonic bonding tool 1 structure of utmost point ear, the base station 21 that will weld tooth 2 sets up to conical and base station 21 keeps away from the one end of ultrasonic bonding tool 1 and sets up to spherical face 22, has both guaranteed the ability of piercing weldment 7, because the top is spherical face 22 again, the difficult surface layer welding that destroys. The welding seal area is composed of a plurality of welding teeth 2, the pressure and the amplitude of each welding tooth 2 are guaranteed to be uniform and stable, and the single welding tooth 2 cannot be damaged due to local abrasion.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a prevent cracked ultrasonic bonding tool structure of utmost point ear, includes the ultrasonic bonding tool, has on the working face of ultrasonic bonding tool and welds tooth, its characterized in that: the welding tooth comprises a conical base station, and a spherical surface is arranged at one end, away from the ultrasonic welding head, of the welding tooth.

2. An ultrasonic weld head structure for preventing a tab from cracking as set forth in claim 1, wherein: and the edge of the working surface of the ultrasonic welding head is provided with a fillet transition surface.

3. An ultrasonic weld head structure for preventing tab rupture as set forth in claim 2 wherein: a transition inclined plane is arranged between the fillet transition surface and the working surface.

4. An ultrasonic weld head structure for preventing a tab from cracking as set forth in claim 1, wherein: the welding teeth are distributed on the working surface in a rectangular or annular array.

5. An ultrasonic weld head structure for preventing a tab from cracking as set forth in claim 1, wherein: gaps with equal distance are reserved between every two adjacent welding teeth.

6. An ultrasonic weld head structure for preventing a tab from cracking as set forth in claim 1, wherein: and the surface of the welding tooth is provided with a wear-resistant coating and an anti-sticking coating.