CN206677381U - Wave welding head of ultrasonic wave - Google Patents

Abstract

The utility model discloses an ultrasonic welding head, which comprises a welding head body, a strip-shaped boss and welding teeth. The strip-shaped boss is arranged at the front end of the welding head body, and welding teeth are arranged on the strip-shaped boss. The left and right sides of the front end of the welding head body are provided with lobes, the length of the lobes is selected from a value between 3 and 15 mm, and the width of the lobes is selected from a value between 15 mm and 30 mm. The arc transition between the convex corner and the welding head body, the radius of the arc is greater than or equal to 10mm; the impact of the transverse wave generated by the ultrasonic welding head on the object during welding is slowed down, making the welding between the objects smoother and more stable , and improve the efficiency of ultrasonic welding.

Description

Ultrasonic horn

technical field

The utility model relates to an ultrasonic welding head.

Background technique

Electric vehicles are powered by a power battery pack. The power battery pack is composed of multiple battery cells connected in series or in parallel. A battery pack may have hundreds or thousands of battery cells. The connection between these battery cells is generally by ultrasonic welding. .

Ultrasonic welding uses ultrasonic high-frequency vibration waves to be transmitted along the welding head to two closely attached objects to be welded, so that the surface layers of the two objects rub against each other, resulting in mutual penetration and fusion between the molecular layers, and the molecular crystals on the surface of the two objects Grid to enter into each other to recombine and integrate, so that they can be tightly integrated into one body. The advantages of ultrasonic welding have the following advantages: 1), the welding material does not melt, so it does not oxidize, is not brittle and maintains the original mechanical force and electrical conductivity of the metal; 2), after welding, it can maintain the electrical conductivity of the original metal, solid and good electrical conductivity, The resistivity is extremely low, and the weakening of the resistance value is negligible; 3), even if there is an electroplating layer on the surface of the welded metal, effective welding can be performed; 4), the welding time is short, and no auxiliary heating such as flux, gas or solder is required; 5) There is no spark or arc phenomenon in welding, which is environmentally friendly, safe and consumes less energy.

Utility model content

The utility model provides an ultrasonic welding head, which comprises a welding head body, a strip-shaped boss and welding teeth. The strip-shaped boss is arranged at the front end of the welding head body, and welding teeth are arranged on the strip-shaped boss. The left and right sides of the front end of the welding head body are provided with lobes, the length of the lobes is selected from a value between 3mm and 15mm, and the width of the lobes is selected from a value between 15mm and 30mm, so The transition between the convex corner and the welding head body is through a circular arc, and the radius of the circular arc is greater than or equal to 10mm.

The front end position of the welding head body refers to the end closest to the welding object during ultrasonic welding. According to an embodiment of the present invention, the strip-shaped boss is located on the upper and/or lower sides of the welding head body, and the two surfaces on the upper and lower sides are respectively the left and right sides. The length of the convex angle is selected from the value between 3mm and 15mm, and the width of the convex angle is selected from the value between 15mm and 30mm, so that the ultrasonic welding head can avoid the influence of transverse wave on the welding effect to the greatest extent when welding the object .

As shown in Figure 1, the left and right sides of the front end of the welding head body refer to the left side and right side of the front end of the welding head body, the length of the convex angle refers to the distance between a-a', and the convex angle The width refers to the distance between bb'.

Preferably, strip-shaped bosses are provided on the upper and lower opposite sides of the welding head body.

Strip bosses are arranged on the upper and lower opposite sides of the welding head body, and welding teeth are arranged on each strip boss, which can improve the efficiency of ultrasonic welding.

Preferably, the length of the convex angle is selected from a value between 3mm and 10mm. More preferably, the length of the lobes is selected from a value between 4mm and 8mm.

Preferably, the width of the convex angle is selected from a value between 15mm and 30mm. More preferably, the width of the lobes is selected from a value between 20mm and 30mm.

Preferably, the radius of the arc is selected from a value between 10mm and 15mm. If the radius of the arc is too small, the stress will be more concentrated, which will easily lead to the breakage of the convex corner; when the radius of the arc is too large, the impact of the shear wave generated by the welding head on the object to be welded cannot be significantly slowed down.

Preferably, the radius of the arc is selected from a value between 12mm and 14mm. More preferably, the arc has a radius of 13.36 mm.

The length is selected from a value between 3mm and 10mm, the width is selected from a convex angle between 20mm and 30mm, and the radius of the transition arc between the convex angle and the welding head body is selected from a value between 12 and 14mm, so that the ultrasonic welding The effect of eliminating shear waves is better.

After using the technical solution provided by the utility model, the influence of the transverse wave generated by the ultrasonic welding head on the welded objects is slowed down to the greatest extent, so that the welding between objects is smoother and more stable; and the efficiency of ultrasonic welding is improved.

Description of drawings

Fig. 1 is a top view of an ultrasonic welding head disclosed by the utility model;

Fig. 2 is a perspective view of an ultrasonic welding head disclosed by the utility model;

Among them, 1. welding head body, 2. strip boss, 21. welding tooth, 3. convex corner.

detailed description

Embodiments of the utility model are described below in conjunction with the accompanying drawings, but the utility model is not limited to the following embodiments.

Example 1

As shown in Figure 2, this embodiment provides an ultrasonic welding head, including a welding head body 1, a strip-shaped boss 2 and welding teeth 21, the strip-shaped boss 2 is arranged on the upper and lower sides of the front end of the welding head body 1, Welding teeth 21 are arranged on the strip-shaped boss 2, and lobes 3 are arranged on the left and right sides of the front end of the welding head body 1. The length of the lobes 3 is 3 mm, and the width of the lobes 3 is 15 mm. The transition between the bodies 1 is through a circular arc, and the radius of the circular arc is 10 mm.

Example 2

As shown in Figure 2, this embodiment provides an ultrasonic welding head, including a welding head body 1, a strip-shaped boss 2 and welding teeth 21, the strip-shaped boss 2 is arranged on the upper and lower sides of the front end of the welding head body 1, Welding teeth 21 are arranged on the strip-shaped boss 2, and lobes 3 are arranged on the left and right sides of the front end of the welding head body 1. The length of the lobes 3 is 10 mm, and the width of the lobes 3 is 22 mm. The transition between the bodies 1 is through a circular arc, and the radius of the circular arc is 13.5 mm.

Example 3

As shown in Figure 2, this embodiment provides an ultrasonic welding head, including a welding head body 1, a strip-shaped boss 2 and welding teeth 21, the strip-shaped boss 2 is arranged on the upper and lower sides of the front end of the welding head body 1, Welding teeth 21 are set on the strip-shaped boss 2, and lobes 3 are set on the left and right sides of the front end of the welding head body 1. The length of the lobes 3 is 12mm, and the width of the lobes 3 is 25mm. The transition between the bodies 1 is through a circular arc, and the radius of the circular arc is 14.5mm

Example 4

As shown in Figure 2, this embodiment provides an ultrasonic welding head, including a welding head body 1, a strip-shaped boss 2 and welding teeth 21, the strip-shaped boss 2 is arranged on the upper and lower sides of the front end of the welding head body 1, Welding teeth 21 are arranged on the strip-shaped boss 2, and lobes 3 are arranged on the left and right sides of the front end of the welding head body 1. The length of the lobes 3 is 15 mm, and the width of the lobes 3 is 30 mm. The transition between the bodies 1 is through a circular arc, and the radius of the circular arc is 15 mm.

It should be noted that the above descriptions are only for explaining the principles of the present utility model, and cannot be construed as specific limitations on the protection scope of the present utility model in any way. Based on the explanations herein, those skilled in the art can think of other specific implementations or equivalent replacements of the utility model without creative effort, and all of them will fall within the protection scope of the utility model.

Claims (6)

1. An ultrasonic welding head, characterized in that: it comprises a welding head body, a strip boss and welding teeth, the strip boss is arranged at the front end of the welding head body, and welding teeth are arranged on the strip boss , the left and right sides of the front end of the welding head body are provided with lobes, the length of the lobes is selected from a value between 3mm and 15mm, and the width of the lobes is selected from a value between 15mm and 30mm, The transition between the convex corner and the welding head body is through a circular arc, and the radius of the circular arc is greater than or equal to 10 mm. 2. The ultrasonic welding head according to claim 1, characterized in that: the upper and lower opposite sides of the welding head body are provided with strip-shaped bosses. 3. The ultrasonic welding head according to claim 1, characterized in that: the length of the convex angle is selected from a value between 3mm and 10mm. 4. The ultrasonic welding head according to claim 1, characterized in that: the width of the convex angle is selected from a value between 20 mm and 30 mm. 5. The ultrasonic welding head according to claim 1, characterized in that: the radius of the arc is selected from a value between 10mm and 15mm. 6. The ultrasonic welding head according to claim 5, characterized in that: the radius of the arc is selected from a value between 12mm and 14mm.