CN214978464U

CN214978464U - Welding head and welding device for generating circumferential stretching vibration

Info

Publication number: CN214978464U
Application number: CN202120144371.2U
Authority: CN
Inventors: 李永华
Original assignee: Shenzhen B&lsonic Ultrasonic Automatic Machine Co ltd
Current assignee: Shenzhen B&lsonic Ultrasonic Automatic Machine Co ltd
Priority date: 2021-01-19
Filing date: 2021-01-19
Publication date: 2021-12-03
Anticipated expiration: 2031-01-19

Abstract

The utility model relates to an ultrasonic bonding's technical field discloses a produce tensile vibration of circumference bonding tool and welding equipment. Wherein, this bonding tool that produces circumference tensile vibration includes: the connecting part is provided with a top surface, and the center of the top surface of the connecting part is provided with a connecting hole which is used for being fixedly connected with the transducer; a middle connecting rod, one end of which is connected to the center of the bottom surface of the connecting part; the welding part is disc-shaped, and the center of the welding part is connected to the other end of the middle connecting rod. The utility model discloses a produce bonding tool and welding equipment of circumference tensile vibration that technical scheme provided, the weld part can stretch into the work piece inboard and weld, and what produce is circumference tensile vibration, and it is effectual to weld, and efficiency is higher.

Description

Welding head and welding device for generating circumferential stretching vibration

Technical Field

The patent of the utility model relates to an ultrasonic bonding's technical field particularly, relates to a bonding tool and welding equipment that produce circumference tensile vibration.

Background

Ultrasonic welding is the conversion of electrical current into electrical energy by means of an ultrasonic generator, the converted high-frequency electrical energy being converted again into mechanical motion of the same frequency by means of a transducer, the mechanical motion then being transmitted via a horn structure to a welding head which transmits the received vibration energy to the joint of the workpieces to be welded, which are moved relative to one another essentially parallel to their welding surfaces, and the surfaces of the two objects being rubbed against one another under pressure to form a fusion between the molecular layers.

In the prior art, when ultrasonic welding is used, a horizontal plane between two workpieces is generally welded, and a welding head is pressed on one workpiece to ensure that the surfaces of the two workpieces which are jointed are fused and welded.

However, in some structures requiring welding to the inner surface of the workpiece, the conventional welding head structure requires ultrasonic welding to each part of the inner surface of the workpiece during welding, which is extremely troublesome and has poor welding effect.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a produce bonding tool and welding equipment of circumference tensile vibration, aim at solving prior art, when carrying out ultrasonic bonding to the inboard surface of work piece, the poor problem of welding effect.

The utility model discloses a realize like this, a bonding tool that produces circumference tensile vibration, include:

the connecting part is provided with a top surface, and the center of the top surface of the connecting part is provided with a connecting hole which is used for being fixedly connected with the transducer;

a middle connecting rod, one end of which is connected to the center of the bottom surface of the connecting part;

the welding part is disc-shaped, and the center of the welding part is connected to the other end of the middle connecting rod.

Optionally, an annular protrusion is annularly arranged on the outer periphery of the welding portion.

Optionally, a plurality of welding teeth which are away from the welding part and protrude are arranged on the annular protrusion.

Optionally, a plurality of said teeth are evenly spaced around the centre of said weld.

Optionally, the intermediate connecting rod has a first connecting section connected to the welding portion, and the diameter of the first connecting section gradually increases along the direction from the intermediate connecting rod to the welding portion.

Optionally, the intermediate connecting rod has a second connecting section connected to the connecting portion, and the diameter of the second connecting section gradually increases along the direction from the intermediate connecting rod to the connecting portion.

Optionally, the welding portion has a first surface facing away from the intermediate connecting rod, a protruding portion protrudes from the center of the first surface of the welding portion, and the diameter of the protruding portion gradually increases along the direction from the welding portion to the protruding portion.

Optionally, the boss has a tapered hole in the center.

Optionally, the connecting portion, the intermediate connecting rod, and the welding portion are integrally formed.

The utility model also provides a welding equipment, including the transducer that produces axial vibration with the bonding tool, the bonding tool includes:

the welding part is disc-shaped, and the center of the welding part is connected to the other end of the middle connecting rod;

one end of the transducer is provided with a connecting column, the connecting column generates axial vibration along with the transducer, and the connecting column is fixedly connected with a connecting hole in the top surface of the connecting part through threads.

Compared with the prior art, the utility model provides a produce tensile vibration of circumference bonding tool, structure through this bonding tool gives, make the bonding part can produce the tensile vibration of circumference, the work area of this bonding tool is the circumference part of bonding part, when welding between the horizontal plane to some work pieces, the circumference of bonding part supports and presses on the work piece, can weld through the produced tensile vibration of its circumference, and, when welding some work piece internal side surfaces, the scalable income work piece inboard of this bonding tool welds, and because the bonding part that its produced is the tensile vibration of circumference, to some internal side surfaces for curved work pieces, can weld a plurality of positions of work piece internal side surface simultaneously, it is effectual to weld, efficiency is higher. The problem of among the prior art, when carrying out ultrasonic bonding to work piece inboard surface, welding effect is poor is solved.

Drawings

Fig. 1 is a schematic view of a bonding tool generating circumferential tensile vibration according to the present invention;

fig. 2 is a schematic bottom view of a horn for generating circumferential stretching vibrations provided by the present invention;

fig. 3 is a schematic perspective view of the welding apparatus provided by the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The following describes the implementation of the present invention in detail with reference to specific embodiments.

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and those skilled in the art can understand the specific meanings of the terms according to specific situations.

Referring to fig. 1 to 3, the preferred embodiment of the present invention is shown.

The embodiment of the utility model provides an in, this bonding tool that produces circumference tensile vibration, include:

a connecting part 10, wherein the connecting part 10 is provided with a top surface, the center of the top surface of the connecting part 10 is provided with a connecting hole 10a, and the connecting hole 10a is used for being fixedly connected with the transducer 50;

an intermediate connection rod 20, one end of the intermediate connection rod 20 being connected to the center of the bottom surface of the connection part 10;

the welding portion 30 is formed in a disc shape, and the center of the welding portion 30 is connected to the other end of the intermediate connecting rod 20.

The intermediate connecting rod 20 has a diameter smaller than that of the connecting portion 10 and the welded portion 30, and axial vibration of the connecting portion 10 is transmitted to the center of the welded portion 30 through the intermediate connecting rod 20, thereby vibrating the outer peripheral edge of the welded portion 30. Specifically, referring to fig. 3, in the present embodiment, the direction from the middle connecting rod 20 to the center of the welding portion 30 is taken as a first direction, and the opposite direction is taken as a second direction, so that when the axial vibration of the middle connecting rod 20 drives the center of the welding portion 30 to vibrate toward the first direction, the outer peripheral edge of the welding portion 30 vibrates toward the second direction relative to the center of the welding portion 30, and when the axial vibration of the middle connecting rod 20 drives the center of the welding portion 30 to vibrate toward the second direction, the outer peripheral edge of the welding portion 30 vibrates toward the first direction relative to the center of the welding portion 30, so that the circumferential portion of the welding portion 30 generates tensile vibration during the reciprocating vibration.

In this embodiment, the connecting portion 10, the welding portion 30 and the intermediate connecting rod 20 are coaxially disposed to ensure a stable structure and uniform amplitude.

Thus, in the present embodiment, the welding head has a structure such that the welding portion 30 can generate circumferential stretching vibration, the working area of the welding head is the circumferential portion of the welding portion 30, when welding between horizontal surfaces of some workpieces, the circumference of the welding portion 30 is pressed against the workpieces, and the welding can be performed by the stretching vibration generated by the circumference, and when welding the inner side surfaces of some workpieces, the welding portion 30 of the welding head can extend into the inner side of the workpieces for welding, and for some workpieces with arc inner side surfaces, a plurality of portions of the inner side surfaces of the workpieces can be welded at the same time due to the circumferential stretching vibration generated by the welding head, so that the welding effect is good, and the efficiency is higher.

Referring to fig. 1 and 2, in an embodiment of the present invention, an annular protrusion 31 is disposed around an outer periphery of the welding portion 30.

Specifically, the weld 30 has a first surface facing away from the center connecting rod 20, the annular projection 31 is located at a position where the weld 30 is close to the first surface, and a surface of the annular projection 31 facing away from the center connecting rod 20 is flush with the first surface. The thickness of the welding zone of the welding part 30 is reduced by the annular projection 31, so that the welding of the positions which are difficult to weld, such as the inner side surface of the workpiece, is facilitated, and the generated circumferential stretching vibration effect is better.

In addition, the annular projection 31 is provided with a plurality of welding teeth 32 projecting away from the welding portion 30.

Thus, the welding area of the welding head is changed into the welding teeth 32 protruded from the annular protrusion 31, which is more convenient for welding narrow areas, and when the generated circumferential stretching vibration is transmitted to each welding tooth 32, compared with the protrusion structure connected as a whole, the vibration effect is better, so that the welding effect is better.

Specifically, should weld the upper and lower surface of tooth 32 and the protruding upper and lower surface parallel and level of annular 31, along keeping away from the protruding direction of annular 31, weld the width of tooth 32 and dwindle gradually to guarantee its structural strength, and, in this embodiment, the tip that welds tooth 32 is planar arrangement, like this, in order to guarantee that it can be with the stable laminating of work piece, convenient welding.

Also, a plurality of welding teeth 32 are evenly spaced around the center of the welded portion 30.

Thus, the plurality of teeth 32 of the welding portion 30 have uniform amplitude to improve the welding effect.

Referring to fig. 2 and 3, in an embodiment of the present invention, the intermediate connecting rod 20 has a first connecting section 21 connected to the welding portion 30, and the diameter of the first connecting section 21 increases gradually along the direction from the intermediate connecting rod 20 to the welding portion 30.

The first connecting section 21 of the intermediate connecting rod 20 is connected with the welding part 30, and the diameter of the first connecting section is gradually increased, so that the welding part 30 is stable in structure, the intermediate connecting rod 20 is not easy to break, and meanwhile, energy loss in the welding process is reduced.

Specifically, the side wall of the first connecting section 21 is an inward concave arc-surface-shaped structure, so that the structure is stable, and on the other hand, the first connecting rod is prevented from directly contacting the surface of a workpiece, and the welding quality is not affected. In the present embodiment, the first connecting section 21 extends to the outer periphery of the welding portion 30, so that the center of the welding portion 30 is thicker and the outer periphery is thinner, and circumferential stretching vibration is more easily generated, so as to weld the position difficult to weld.

Further, the weld 30 has a first surface facing away from the intermediate connecting rod 20, and a boss 40 is protruded from the center of the first surface of the weld 30, and the diameter of the boss 40 is gradually increased in a direction from the weld 30 to the boss 40.

The convex portion 40 further makes the center of the welded portion 30 thick and the outer periphery thin to generate circumferential tensile vibration. Similarly, the side wall of the protrusion 40 is in an inwardly concave arc-shaped structure to facilitate welding. Also, in the present embodiment, the surface diameter of the boss 40 is the same as the middle diameter of the intermediate connecting rod 20, so that the middle of the welded part 30 is made to vibrate in the same direction as the intermediate connecting rod 20, and the circumference of the welded part 30 generates the circumferential tensile vibration.

Further, the boss 40 has a tapered hole 40a in the center.

The tapered hole 40a is located at a surface of the protruding portion 40 facing away from the welding portion 30, the surface of the protruding portion 40 is coaxial with the welding portion 30, and the tapered hole 40a is formed on the surface of the protruding portion 40, so that compared with the solid protruding portion 40, the tapered hole 40a is more beneficial for the welding portion 30 to generate the circumferential tensile vibration. The conical hole is communicated with the connecting hole, and can be in threaded connection with the connecting column of the transducer by penetrating the welding head through a bolt. If necessary, the tapered hole 40a may be abutted against another transducer 50 to increase the energy for welding.

Referring to fig. 1 and 2, in an embodiment of the present invention, the intermediate connecting rod 20 has a second connecting section 22 connected to the connecting portion 10, and the diameter of the second connecting section 22 increases gradually along the direction from the intermediate connecting rod 20 to the connecting portion 10.

The second connecting section 22 of the intermediate connecting rod 20 is connected with the connecting part 10, and the diameter of the second connecting section is gradually increased, so that the structure of the welding part 30 is stable, the intermediate connecting rod 20 is not easy to break, and meanwhile, the energy loss in the welding process is reduced. Specifically, the sidewall of the second connecting section 22 is also an inwardly concave arc-surface-shaped structure.

In addition, in this embodiment, an annular hole is formed on the top surface of the connecting portion 10, the annular hole divides the inside and the outside into a connecting column 11 on the inner side and a connecting ring 12 on the outer side, a connecting hole 10a is formed in the connecting column 11, so as to realize connection with the transducer 50, and the amplitude is increased by the structure of the connecting portion 10, so that the welding effect is better.

Referring to fig. 1 and 2, in an embodiment of the present invention, the connecting portion 10, the intermediate connecting rod 20 and the welding portion 30 are integrally formed. Therefore, the welding head has uniform amplitude and good welding effect.

Referring to fig. 3, the present invention further provides a welding apparatus, which includes a transducer 50 for generating axial vibration and a welding head, and the structure and function of the welding head can refer to the above embodiments, which are not repeated herein.

And, one end of transducer 50 has a connection column 11, connection column 11 produces axial vibration with transducer 50, connection column 11 and connection hole 10a of the top surface of connecting portion 10 pass through threaded connection and fix.

In this way, the transducer 50 can generate axial vibration, so that the welding head also generates axial vibration, and the welding portion 30 generates circumferential tensile vibration, thereby realizing welding.

In another embodiment, the transducer 50 is also arranged at the other end of the welding head, the connecting column 11 of the transducer 50 is butted with the conical hole 40a of the welding head, and the two transducers 50 work simultaneously, so that the generated vibration effect is better, and the welding effect is better.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A bonding tool for generating a circumferential tensile vibration, comprising:

2. A bonding tool for generating circumferential tensile vibrations according to claim 1, wherein the peripheral edge of the bonding portion is annularly provided with an annular projection.

3. A bonding tool for generating circumferential tensile vibrations according to claim 2, wherein the annular projection is provided with a plurality of bonding teeth projecting away from the bonding portion.

4. A horn for generating circumferential tensile vibrations according to claim 3, wherein a plurality of said teeth are evenly spaced about the center of said weld.

5. A welding head for generating circumferential tensile vibrations according to any one of claims 1 to 4, wherein said intermediate connecting bar has a first connecting section for connection with said weld, said first connecting section having a diameter which increases gradually in a direction from said intermediate connecting bar to said weld.

6. A welding head for generating circumferential tensile vibrations according to any one of claims 1 to 4, wherein said intermediate connecting bar has a second connecting section for interfacing with said connecting portion, said second connecting section having a diameter which increases progressively in a direction from said intermediate connecting bar to said connecting portion.

7. A weld head for generating circumferential tensile vibrations according to any one of claims 1 to 4, wherein the weld has a first surface facing away from the intermediate connecting rod, the first surface of the weld head having a raised portion projecting centrally therefrom, the raised portion having a diameter that increases in a direction from the weld head to the raised portion.

8. A horn for generating circumferential tensile vibrations according to claim 7, wherein the center of said boss has a tapered hole.

9. A welding head for generating circumferential tensile vibrations according to any one of claims 1 to 4, wherein said connecting portion, intermediate connecting bar, and weld are integrally formed.

10. A welding apparatus comprising a transducer generating axial vibration and a horn generating circumferential tensile vibration according to any one of claims 1 to 9, the transducer having a connecting column at one end thereof, the connecting column generating axial vibration with the transducer, the connecting column being fixed to a connecting hole in a top surface of the connecting portion by screw-fastening.