CN216151435U

CN216151435U - Ultrasonic welding device and ultrasonic welding machine

Info

Publication number: CN216151435U
Application number: CN202121883825.4U
Authority: CN
Inventors: 周宏建; 石新华
Original assignee: Shanghai Jiaocheng Ultrasonic Technology Co ltd
Current assignee: Wuxi Jiaocheng Intelligent Technology Co ltd
Priority date: 2020-11-26
Filing date: 2021-08-12
Publication date: 2022-04-01
Anticipated expiration: 2031-08-12

Abstract

The utility model belongs to the technical field of ultrasonic metal welding, and discloses an ultrasonic welding device and an ultrasonic welding machine, wherein the ultrasonic welding device comprises an ultrasonic generator and an ultrasonic triple set, the ultrasonic triple set comprises an energy converter, an amplitude modulator and a welding head which are sequentially connected, the welding head comprises a welding head body, a first extending part and a second extending part, the amplitude modulator is connected with the welding head body, the first extending part and the second extending part are respectively positioned at the upper side and the lower side of one end of the welding head body, which is far away from the amplitude modulator, the ultrasonic welding device also comprises a pressing block, the pressing block is positioned at one end of the first extending part, which is far away from the welding head body, the pressing block and the welding head are in an integrated structure, the welding head body transmits vibration to the welding end of the second extending part, an external pressing device can apply pressure to the welding end through the pressing block arranged at one end of the first extending part, so that a pressing position and a pressed position are positioned on the same central line in a pressing process, and the welding head is ensured not to be bent and deformed under stress when in work.

Description

Ultrasonic welding device and ultrasonic welding machine

Technical Field

The utility model relates to the technical field of ultrasonic metal welding, in particular to an ultrasonic welding device and an ultrasonic welding machine.

Background

The working principle of the ultrasonic metal welding technology is that high-speed movement of atoms inside a to-be-welded part is promoted through high-frequency vibration friction of ultrasonic waves, so that metal solid-state bonding is realized at the welding position.

In the prior art, an ultrasonic welding part generally comprises an ultrasonic three-in-one group, namely a transducer, an amplitude modulator and a welding head, which are sequentially connected, wherein the transducer converts high-frequency electric energy into mechanical motion with the same frequency, then the mechanical motion is transmitted to the welding head through a set of amplitude modulator capable of changing amplitude, and the welding end of the welding head vibrates in high frequency, so that metal solid-state combination is realized at a welding position. At present, pressure can be exerted on a welding head at a certain position of the side edge of a welding position in the ultrasonic metal welding process, and because the pressure application position and the welding position are not on the same central line, the end part of the welding head can receive the reaction force of a piece to be welded and generate bending deformation, so that the energy of ultrasonic waves cannot be effectively transmitted to the welding position, meanwhile, the piece to be welded can be damaged, and particularly when large-pressure welding is needed, the problems can be more serious.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an ultrasonic welding device and an ultrasonic welding machine, so as to ensure that the welding head cannot be bent and deformed when stressed during working.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides an ultrasonic welding device, includes supersonic generator and ultrasonic wave triplex, ultrasonic wave triplex includes transducer, amplitude modulator and the bonding tool that connects gradually, the bonding tool includes bonding tool body, first extension and second extension, the amplitude modulator with this body coupling of bonding tool, first extension with the second extension is located respectively the bonding tool body is kept away from the upper and lower both sides of the one end of amplitude modulator, ultrasonic welding device still includes:

the pressing block is located at one end, far away from the welding head body, of the first extending portion, and the pressing block and the welding head are of an integrated structure.

Preferably, the ultrasonic welding apparatus further comprises a clamping group configured to simultaneously clamp the compact and the amplitude modulator.

Preferably, the modulator comprises a protrusion, the protrusion comprises a plurality of circular rings taking the axis of the modulator as an axis, and the circular rings are arranged in a stepped manner.

Preferably, the clamping group comprises:

a first clamp configured to clamp a first ring of a largest diameter of the plurality of rings;

a second clamp configured to clamp the compact.

Preferably, the first clamping piece is provided with a through hole, the first circular ring is inserted into the through hole, and the inner wall of the through hole is attached to the first circular ring;

the first clamping piece is provided with a notch, the notch is communicated with the through hole, the first clamping piece comprises a first clamping part and a second clamping part, the notch is formed between the first clamping part and the second clamping part, and the first clamping part and the second clamping part are both provided with connecting holes so as to be locked with the first ring through a connecting piece.

Preferably, the first clamping member includes a first clamping ring and a second clamping ring configured to clamp both side surfaces of the first ring, respectively.

Preferably, the axial length of the amplitude modulator, the axial length of the horn body, the axial length of the first extension, and the axial length of the second extension are each integer multiples of a half wavelength of the ultrasonic wave.

Preferably, the end of the second extension remote from the horn body is a non-ground end.

Preferably, the non-grinding end surface is a rough surface.

The utility model also provides an ultrasonic welding machine which comprises the ultrasonic welding device.

The utility model has the beneficial effects that:

the welding head comprises a welding head body, a first extension part and a second extension part, the welding head body is connected with the amplitude modulator, a pressing block is arranged at one end of the first extension part, which is far away from the welding head body, an external pressing device can apply pressure to the pressing block, and one end of the second extension part, which is far away from the welding head body, is a welding end, so that a pressing position and a pressed position are located on the same central line in the pressing process, and the welding head is ensured not to bend and deform when being stressed in the working process.

Drawings

FIG. 1 is a schematic view of an ultrasonic welding apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of the construction of the modulator of the present invention;

FIG. 3 is a schematic structural diagram of an ultrasonic triad and a briquetting according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a second ultrasonic triple-unit, a pressing block and a first clamping member according to an embodiment of the utility model.

In the figure:

1. carrying out ultrasonic three-way combination; 11. a transducer; 12. an amplitude modulator; 13. a welding head; 121. a projection; 131. A welding head body; 132. a first extension portion; 133. a second extension portion; 1211. a first circular ring; 1331. welding the end;

2. briquetting;

3. a clamping group; 31. a first clamping member; 32. a second clamping member; 311. perforating; 312. a notch; 313. A first clamping portion; 314. a second clamping portion; 315. a first clamp ring; 316. a second clamp ring; 321. a clamping plate; 322. a connecting plate.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

Example one

Ultrasonic metal welding is a process for converting electric energy into mechanical energy, and a welding device generates heat required by welding by enabling a welding head 13 to vibrate at high frequency and rub with a workpiece, so that the workpiece is welded. In the prior art, a lateral pressure welding system is mostly adopted, in the pressure process, the pressure position and the pressure position are not on the same central line, the welding head 13 is subjected to bending deformation under the action of a reaction force, so that the vibration energy transfer efficiency of ultrasonic waves is greatly influenced by small deformation, and in order to solve the problems, the embodiment provides an ultrasonic welding device which comprises an ultrasonic generator and an ultrasonic triple set 1, wherein the ultrasonic triple set 1 comprises a transducer 11, an amplitude modulator 12 and the welding head 13 which are sequentially connected, the welding head 13 comprises a welding head body 131, a first extension part 132 and a second extension part 133, the amplitude modulator 12 is connected with the welding head body 131, the first extension part 132 and the second extension part 133 are respectively positioned at the upper side and the lower side of one end of the welding head body 131 far away from the amplitude modulator 12, the ultrasonic welding device further comprises a pressing block 2, and the pressing block 2 is positioned at one end of the first extension part 132 far away from the welding head body 131, and the pressing block 2 and the welding head 13 are of an integrated structure.

That is, in the present embodiment, the transducer 11, the amplitude modulator 12 and the welding head 13 which are connected in sequence are arranged to transmit ultrasonic vibration and further weld a workpiece, wherein the welding head 13 includes a welding head body 131, a first extension portion 132 and a second extension portion 133, the welding head body 131 is connected with the amplitude modulator 12, one end of the first extension portion 132, which is away from the welding head body 131, is provided with a pressing block 2, an external pressing device can apply pressure to the pressing block 2, one end of the second extension portion 133, which is away from the welding head body 131, is a welding end 1331, so that a pressing position and a pressed position are located on the same central line in the pressing process, bending deformation of the welding head 13 cannot occur when the welding head is stressed, and the pressing block 2 and the welding head 13 are integrally formed, and the vibration energy transmission efficiency of the ultrasonic wave is prevented from being affected by the joint of the pressing block 2 and the welding head 13.

Specifically, in the present embodiment, the current is converted into the high-frequency electric energy by the ultrasonic generator, the transducer 11 converts the high-frequency electric energy into the mechanical motion with the same frequency, then the mechanical motion is transmitted to the welding head body 131 through a set of amplitude modulator 12 capable of changing the amplitude, the welding head body 131 transmits the vibration to the welding end 1331 of the second extension 133, the external pressing device can apply pressure to the welding end 1331 through the pressing block 2 arranged at one end of the first extension 132, so that the first extension 132 and the second extension 133 move up and down, and the welding end 1331 vibrates with high frequency and rubs with the workpiece, thereby completing the welding operation.

It can be understood that, in other embodiments, the pressing block 2 and the welding head 13 are two independent components, and are connected together, when the welding head 13 vibrates at high frequency, the joint of the pressing block 2 and the welding head 13 will generate heat due to vibration, which affects the vibration energy transmission efficiency of ultrasonic waves, and meanwhile, the joint of the pressing block 2 and the welding head 13 will be damaged due to too high heat, which results in welding failure, and in order to solve the above problems, the pressing block 2 and the welding head 13 are integrally formed in this embodiment.

In order to improve the transmission efficiency of the ultrasonic vibration, in the present embodiment, the axial length of the amplitude modulator 12, the axial length of the horn body 131, the axial length of the first extension 132, and the axial length of the second extension 133 are all integer multiples of half the wavelength of the ultrasonic wave, so that resonance can be achieved among the amplitude modulator 12, the horn body 131, the first extension 132, and the second extension 133, and it is ensured that the ultrasonic vibration can be efficiently transmitted to the welding end 1331 of the second extension 133.

Preferably, the modulator 12 of the present embodiment includes the protrusion 121, and the protrusion 121 includes a plurality of rings having an axis of the modulator 12, the plurality of rings are arranged in a step shape, and an outer end of the first ring 1211 having the largest diameter among the plurality of rings does not vibrate in the axial direction.

As shown in fig. 1 to 3, the ultrasonic triple-link group 1 is of a cantilever structure, and therefore, the ultrasonic welding apparatus further includes a clamping group 3, the clamping group 3 is configured to simultaneously clamp the pressing block 2 and the amplitude modulator 12, when only the pressing block 2 is clamped, the transducer 11 and the amplitude modulator 12 are in a floating state, when the pressing block 2 and the welding head 13 move up and down, a joint of the transducer 11 and the amplitude modulator 12 is damaged due to inertial impact, and when only the amplitude modulator 12 is clamped, the welding head 13 may jump radially during the up and down movement, which causes uneven welding of a workpiece to be welded.

Further, the clamping group 3 includes a first clamping member 31 and a second clamping member 32, the first clamping member 31 is configured to clamp a first ring 1211 having the largest diameter among the plurality of rings, and the second clamping member 32 is configured to clamp the compact 2. It is understood that, in the present embodiment, the axial length of the first extension portion 132 is set to be greater than the axial length of the second extension portion 133, and by setting the axial length of the first extension portion 132 to be a specific size, the compact 2 located at the end of the first extension portion 132 away from the horn body 131 does not vibrate in the axial direction, and at the same time, the outer end of the first ring 1211 does not vibrate in the axial direction, that is, the first clamping member 31 and the second clamping member 32 do not affect the vibration of the welding end 1331 when clamping the first ring 1211 and the compact 2, respectively.

As shown in fig. 1 to 3, in order to enable the first clamping member 31 to clamp the first ring 1211, in this embodiment, the first clamping member 31 is provided with a through hole 311, the first ring 1211 is inserted into the through hole 311, and an inner wall of the through hole 311 is attached to the first ring 1211, the first clamping member 31 is provided with a notch 312, the notch 312 is communicated with the through hole 311, the first clamping member 31 includes a first clamping portion 313 and a second clamping portion 314, the notch 312 is formed between the first clamping portion 313 and the second clamping portion 314, and both the first clamping portion 313 and the second clamping portion 314 are provided with a connecting hole to lock the first clamping member 31 and the first ring 1211 together through a connecting member. That is, the first clamping member 31 can clamp the outer annular surface of the first ring 1211, meanwhile, the first clamping member 31 is provided with a first clamping portion 313 and a second clamping portion 314, a gap 312 is formed between the first clamping portion 313 and the second clamping portion 314, and the first clamping portion 313 on one side of the gap 312 and the second clamping portion 314 on the other side are both provided with connecting holes, so that the gap 312 can be closed by fastening screws, and the first clamping member 31 is locked on the outer annular surface.

Further, as shown in fig. 3, a mounting hole is provided on either side surface of the press block 2, the second clamping member 32 includes a clamping plate 321 and a connecting plate 322, the connecting plate 322 is embedded in the press block 2 through the mounting hole, the connecting plate 322 is fixedly connected with the clamping plate 321, and the clamping plate 321 is optionally fixedly connected with the first clamping member 31.

Of course, in other alternative embodiments, the two sides of the pressing block 2 along the horizontal direction are provided with mounting grooves, the second clamping member 32 includes a clamping plate 321 and a connecting plate 322, the connecting plate 322 is embedded in the pressing block 2 through the mounting grooves, the connecting plate 322 is fixedly connected with the clamping plate 321, and the clamping plate 321 is optionally fixedly connected with the first clamping member 31.

It is understood that the first clamping member 31 and the second clamping member 32 may be integrally connected to facilitate assembling the ultrasonic welding device, and the first clamping member 31 and the second clamping member 32 may be separate members.

Preferably, the end of the second extension 133 distal from the horn body 131 is a non-ground end. That is, the surface of the welding end 1331 has no grinding teeth, when dealing with foil materials (such as copper foil and aluminum foil) and materials with poor shearing resistance, the materials are easy to crack and penetrate during welding, and larger metal dust particles are generated during welding, which results in substandard product quality and dangerous working environment. The end of the second extension part 133 far from the welding head body 131 is set to be a non-grinding end, so that the generation of metal dust can be effectively reduced, the environment of production operation is improved, the safety in the welding process is ensured, the quality of products is improved, and meanwhile, the production and processing cost of the welding head 13 can also be reduced.

To enhance the welding effect, the non-serrated end surface is preferably roughened. The non-grinding end surface in the embodiment can be selected to be processed by sand blasting, electro-erosion and laser erosion.

Example two

Referring to fig. 4, compared to the first embodiment, the present embodiment is different in that the first clamping member 31 includes a first clamping ring 315 and a second clamping ring 316, the first clamping ring 315 and the second clamping ring 316 are configured to clamp two side surfaces of the first ring 1211, respectively, and the first ring 1211 and the second ring 1211 are connected together by a bolt, so as to be easily detached and replaced.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the utility model. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides an ultrasonic welding device, includes supersonic generator and ultrasonic wave triple group (1), ultrasonic wave triple group (1) is including transducer (11), amplitude modulator (12) and bonding tool (13) that connect gradually, bonding tool (13) are including bonding tool body (131), first extension (132) and second extension (133), amplitude modulator (12) with bonding tool body (131) are connected, first extension (132) with second extension (133) are located respectively bonding tool body (131) are kept away from the upper and lower both sides of the one end of amplitude modulator (12), its characterized in that, ultrasonic welding device still includes:

the pressing block (2) is located at one end, away from the welding head body (131), of the first extending portion (132), and the pressing block (2) and the welding head (13) are of an integrated structure.

2. The ultrasonic welding device according to claim 1, characterized in that it further comprises a clamping group (3), said clamping group (3) being configured to simultaneously clamp said compact (2) and said amplitude modulator (12).

3. The ultrasonic welding device according to claim 2, characterized in that said amplitude modulator (12) comprises a projection (121), said projection (121) comprising a plurality of rings having an axis of said amplitude modulator (12), said plurality of rings being arranged in a stepped manner.

4. The ultrasonic welding device according to claim 3, characterized in that said clamping group (3) comprises:

a first clamping member (31), the first clamping member (31) being configured to clamp a first ring (1211) having a largest diameter among the plurality of rings;

a second clamping member (32), the second clamping member (32) being configured to clamp the pressing block (2).

5. The ultrasonic welding device according to claim 4, characterized in that said first clamping member (31) is provided with a through hole (311), said first ring (1211) is inserted in said through hole (311), and the inner wall of said through hole (311) is fitted with said first ring (1211);

the first clamping piece (31) is provided with a notch (312), the notch (312) is communicated with the through hole (311), the first clamping piece (31) comprises a first clamping portion (313) and a second clamping portion (314), the notch (312) is formed between the first clamping portion (313) and the second clamping portion (314), and both the first clamping portion (313) and the second clamping portion (314) are provided with connecting holes so that the first clamping piece (31) and the first circular ring (1211) can be locked through a connecting piece.

6. The ultrasonic welding device according to claim 4, characterized in that said first clamping member (31) comprises a first clamping ring (315) and a second clamping ring (316), said first clamping ring (315) and said second clamping ring (316) being configured to clamp two sides of said first circular ring (1211), respectively.

7. The ultrasonic welding device according to claim 4, characterized in that the axial length of the amplitude modulator (12), the axial length of the horn body (131), the axial length of the first extension (132) and the axial length of the second extension (133) are all integer multiples of a half wavelength of the ultrasonic waves.

8. The ultrasonic welding device according to claim 1, characterized in that the end of the second extension (133) remote from the horn body (131) is a non-ground end.

9. The ultrasonic welding device of claim 8 wherein the non-serrated end surface is roughened.

10. An ultrasonic welding machine comprising an ultrasonic welding device according to any one of claims 1 to 9.