Battery switch ultrasonic welding head

Abstract

The utility model discloses a battery switch ultrasonic welding head which is characterized in that the battery switch ultrasonic welding head comprises a connecting portion, a bearing portion and a welding head body which are sequentially connected, the connecting portion comprises a threaded connecting column and a square head portion, a group of opposite faces of the square head portion are provided with connecting locking holes which are symmetrically arranged, the bearing portion is the continuation of the square head portion, and the welding head body is connected with the threaded connecting column. At least one vibration reduction groove is formed in the lower portion of the bearing portion, the welding heads are cylindrical, round pits are formed in the lower end faces of the welding heads, and protruding stirring cones are arranged in the middles of the round pits. The ultrasonic welding head has the advantages that the ultrasonic welding head is suitable for welding connection of a plurality of components on a battery switch, welding efficiency is remarkably improved, vibration of the ultrasonic welding head is stable, welding quality can be effectively improved, and the welding forming portion of the mushroom head assembly formed after welding is good in connection stability.

Description

Technical Field

[0001] The utility model relates to the field of ultrasonic welding equipment, in particular to an ultrasonic welding head of a battery switch. Background Art

[0002] Ultrasonic welding is a method that uses high-frequency vibration waves to transmit to the surfaces of two objects to be welded, and under pressure, the two surfaces of the objects are rubbed against each other to form a fusion between the molecular layers. When working, the ultrasonic welding machine converts 50 / 60 Hz current into 15, 20, 30 or 40KHz electrical energy through an ultrasonic generator. The converted high-frequency electrical energy is converted again into mechanical motion of the same frequency through the transducer, and then the mechanical motion is transmitted to the welding head through the amplitude rod device on the transducer. The welding head transmits the received vibration energy to the joint of the workpiece to be welded. In this area, the vibration energy is converted into heat energy by friction, melting the surface of the workpiece to be welded, and then the two workpieces can be welded together.

[0003] Ultrasonic welding is suitable for connecting plastic parts. The temperature of the workpiece interface increases through the friction between the workpiece surface and internal molecules. When the temperature reaches the melting point of the workpiece itself, the workpiece interface quickly melts and then fills the gap between the interfaces. When the vibration stops, the workpiece is cooled and shaped under a certain pressure, thereby achieving the welding purpose.

[0004] The existing battery switch welding equipment is a single-head ultrasonic welding head, which has poor vibration stability, excessive vibration amplitude, and a flat-head structure with poor connection stability after welding. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the utility model provides a battery switch ultrasonic welding head, which has a simple structure, good vibration stability, and good connection stability of the welding forming part on the product after welding.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A battery switch ultrasonic welding head, characterized in that it includes a connecting part, a receiving part, and a welding head connected in sequence, wherein the connecting part includes a threaded connecting column and a square head part, a group of opposite surfaces of the square head part have symmetrically arranged connecting locking holes, the receiving part is a continuation of the square head part, the lower part of the receiving part has at least one vibration-damping groove, the number of the welding heads is multiple, the welding heads are cylindrical, the lower end face of the welding head has a circular pit, and the middle part of the circular pit has a protruding stirring cone.

[0008] Furthermore, a group of opposite surfaces of the receiving portion are provided with stress dispersion grooves, the side walls and bottom surfaces of the stress dispersion grooves are in arc-shaped transitions, and the side walls of the stress dispersion grooves, the side surfaces of the square head portion and the side surfaces of the receiving portion are in arc-shaped transitions.

[0009] Furthermore, the vibration-damping groove is an inverted U-shaped groove, and the depth and width of the vibration-damping groove are both 10 mm.

[0010] Furthermore, the longitudinal section of the circular pit is arc-shaped, so as to form a mushroom head shape at the welding portion on the battery switch.

[0011] The beneficial effects of the utility model include: being suitable for welding and connecting multiple components on a battery switch, significantly improving welding efficiency, the ultrasonic welding head vibrates stably, can effectively improve welding quality, and the mushroom-shaped welding forming part formed after welding has good connection stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 It is a schematic diagram of the structure of an embodiment of the utility model. DETAILED DESCRIPTION

[0014] The present invention will be further described in detail below in conjunction with specific embodiments and accompanying drawings.

[0015] A kind of Figure 1-2 The battery switch ultrasonic welding head shown comprises a connecting portion 1, a receiving portion 2, and a welding head 3 connected in sequence, wherein the connecting portion 1 comprises a threaded connecting column 4 and a square head 5. A group of opposite surfaces of the square head 5 are provided with symmetrically arranged connecting locking holes 6, which are used to lock the ultrasonic welding head through the connecting locking holes 6 after the threaded connecting column 4 is connected to the ultrasonic welding machine, so that the ultrasonic welding head does not rotate during the welding process.

[0016] The outer shape of the receiving part 5 is a continuation of the square head part 5. The lower part of the receiving part 5 has at least one vibration-damping groove 8, which is an inverted U-shaped groove. The depth and width of the vibration-damping groove 8 are both 10 mm. This structure can effectively reduce the lateral vibration of the ultrasonic welding head and improve the stability of the overall vibration of the ultrasonic welding head. A set of opposite surfaces of the receiving part 5 are provided with a stress dispersion groove 7. The side walls and bottom surface of the stress dispersion groove 7 are arc-shaped transitions. The side walls of the stress dispersion groove 7 and the sides of the square head part 5 and the sides of the receiving part are all arc-shaped transitions. This structure allows the stress to be well dispersed during the welding process, avoiding damage to the battery switch. The arc-shaped transition stress dispersion groove has a better energy dispersion efficiency and can balance the frequency and amplitude of the vibration, thereby maximizing the molding quality of the welding part.

[0017] like Figure 2As shown, the application of the ultrasonic welding head of the battery switch of the present application also relies on the battery switch positioning tool 11. The battery switch housing 12 is positioned in the groove of the positioning tool 11. The battery switch housing 12 has a protruding welding column 13. The connecting piece 14 of the battery switch is sleeved on the welding column 13 through the connecting hole. In this embodiment, there are six welding columns 13 on the battery switch, so the number of welding heads 3 corresponds to six. Each welding head 3 is cylindrical, and the lower end face of the welding head 3 has a circular pit 9, and the middle part of the circular pit 9 has a protruding stirring cone 10. The longitudinal section of the circular pit 9 is arc-shaped, which is used to form a mushroom head shape on the welding part of the battery switch. The top of the welding column 13 is melted by the high-frequency vibration of the stirring cone 10 and filled into the circular pit 9. After cooling, a mushroom head-shaped connecting part is formed, thereby preventing the connecting piece 14 from falling off.

[0018] The technical solutions provided by the embodiments of the present invention are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the embodiments of the present invention. The description of the above embodiments is only applicable to help understand the principles of the embodiments of the present invention. At the same time, for those skilled in the art, according to the embodiments of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A battery switch ultrasonic welding head, characterized in that: The invention comprises a connecting portion (1), a receiving portion (2), and a welding head (3) which are connected in sequence, wherein the connecting portion (1) comprises a threaded connecting column (4) and a square head portion (5), a group of opposite surfaces of the square head portion (5) are provided with symmetrically arranged connecting locking holes (6), the receiving portion (2) is a continuation of the square head portion (5), the lower portion of the receiving portion (2) is provided with at least one vibration-damping groove (8), the number of the welding heads (3) is plural, the welding heads (3) are cylindrical, the lower end surface of the welding head (3) is provided with a circular pit (9), and the middle portion of the circular pit (9) is provided with a protruding stirring cone (10).

2. The battery switch ultrasonic welding head according to claim 1, characterized in that: A set of opposite surfaces of the receiving portion (2) are provided with stress dispersion grooves (7), the side walls and bottom surface of the stress dispersion grooves (7) are in arc-shaped transitions, and the side walls of the stress dispersion grooves (7) and the side surfaces of the square head portion (5) and the side surfaces of the receiving portion are in arc-shaped transitions.

3. The battery switch ultrasonic welding head according to claim 1, characterized in that: The vibration-damping groove (8) is an inverted U-shaped groove, and the depth and width of the vibration-damping groove (8) are both 10 mm.

4. The battery switch ultrasonic welding head according to claim 1, characterized in that: The longitudinal section of the circular pit (9) is an arc-shaped one, so as to form a mushroom head shape at the welding portion on the battery switch.

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