CN215238518U

CN215238518U - Chopper for ultrasonic aluminum wire press welder

Info

Publication number: CN215238518U
Application number: CN202120170157.4U
Authority: CN
Inventors: 庞晓东
Original assignee: Shenzhen Shunyu Automation Equipment Co ltd
Current assignee: Shenzhen Shunyu Automation Equipment Co ltd
Priority date: 2021-01-21
Filing date: 2021-01-21
Publication date: 2021-12-21
Anticipated expiration: 2031-01-21

Abstract

The utility model discloses a cleaver for ultrasonic wave aluminium wire press welder, including the cutter body that is connected with ultrasonic transducer, the cutter body is kept away from the tip of ultrasonic transducer and is seted up the bonding wire groove, and the bonding wire groove is including the income wire casing and the pressure wire casing that are linked together, and the cross sectional area of income wire casing is greater than the cross sectional area of pressure wire casing, is equipped with the spacing portion of contradicting with the welding wire bottom on the lateral wall of income wire casing; the utility model provides a chopper for ultrasonic wave aluminium wire press welder has the characteristics of good welding effect, strong stability, and the cross sectional area of the wire-inserting groove is larger than that of the wire-pressing groove, so that welding wires can be conveniently guided into the welding wire groove, and meanwhile, the welding wires can be effectively pressed; the limiting part arranged on the wire inlet groove can limit the welding wire, so that the risk that the welding wire is offset due to vibration of the riving knife and is separated from the wire inlet groove is reduced, and good welding effect and working efficiency are ensured.

Description

Chopper for ultrasonic aluminum wire press welder

Technical Field

The utility model relates to an ultrasonic bonding equipment technical field especially relates to a chopper for ultrasonic wave aluminium wire press welder.

Background

In the production process of semiconductor devices, generally, an ultrasonic pressure welding machine is adopted to weld a welding wire on a chip, a chopper is enabled to generate high-frequency vibration through an ultrasonic transducer, when the chopper is contacted with the welding wire and a welded piece, under the action of pressure and vibration, the surfaces of metals to be welded are mutually rubbed, an oxide film is damaged, and plastic deformation is generated, so that two pure metal surfaces are tightly contacted, the combination of atomic distance is achieved, and finally, firm mechanical connection is formed.

In the prior art, a welding wire groove is often formed in the end part of the riving knife so as to ensure that a welding wire can be accurately welded to a welded piece, and in the welding process, the trend of the welding wire is easy to deviate along with the vibration of the riving knife, so that the riving knife cannot be effectively contacted with the welding wire, even the welding wire is separated from the riving knife, and the welding effect and the production efficiency are seriously influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the cleaver for the ultrasonic aluminum wire press welder is good in welding effect.

In order to solve the technical problem, the utility model discloses a technical scheme be: the utility model provides a riving knife for ultrasonic wave aluminium wire press welder, includes the cutter body of being connected with ultrasonic transducer, the tip that ultrasonic transducer was kept away from to the cutter body has seted up the welding wire groove, the welding wire groove is including the inlet wire groove and the pressure wire groove that are linked together, the cross sectional area of inlet wire groove is greater than the cross sectional area of pressure wire groove, be equipped with the spacing portion of contradicting with the welding wire bottom on the lateral wall of inlet wire groove.

Furthermore, a pressing bulge is further arranged in the wire pressing groove, and the pressing bulge presses against the welding wire.

Furthermore, the number of the pressing protrusions is multiple.

Furthermore, the plurality of pressing protrusions are symmetrically arranged in the line pressing groove.

Furthermore, the two opposite side walls of the wire inlet groove are respectively provided with the limiting parts.

Further, the cross-sectional shape of the limiting part is circular or trapezoidal.

The beneficial effects of the utility model reside in that: the utility model provides a chopper for ultrasonic wave aluminium wire press welder has the characteristics of good welding effect, strong stability, and the cross sectional area of the wire-inserting groove is larger than that of the wire-pressing groove, so that welding wires can be conveniently guided into the welding wire groove, and meanwhile, the welding wires can be effectively pressed; the limiting part arranged on the wire inlet groove can limit the welding wire, so that the risk that the welding wire is offset due to vibration of the cutter body and is separated from the welding wire groove is reduced, and a good welding effect and working efficiency are ensured.

Drawings

Fig. 1 is a schematic structural view of a riving knife for an ultrasonic aluminum wire press welder according to a first embodiment of the present invention;

fig. 2 is a schematic cross-sectional structural view of a chopper for an ultrasonic aluminum wire press welder according to a first embodiment of the present invention;

fig. 3 is a schematic structural view of a riving knife for an ultrasonic aluminum wire press welder according to a second embodiment of the present invention;

fig. 4 is a schematic cross-sectional structural view of a chopper for an ultrasonic aluminum wire press welder according to an embodiment of the present invention.

Description of reference numerals:

1. a cutter body; 2. a wire bonding groove; 21. a wire inlet groove; 22. pressing a wire groove; 3. a limiting part; 4. the protrusion is pressed.

Detailed Description

In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.

Referring to fig. 1 to 4, a cleaver for an ultrasonic aluminum wire press welder includes a cutter body 1 connected to an ultrasonic transducer, a wire-welding groove 2 is formed in an end portion of the cutter body 1 far away from the ultrasonic transducer, the wire-welding groove 2 includes a wire inlet groove 21 and a wire-pressing groove 22 which are communicated with each other, a cross-sectional area of the wire inlet groove 21 is larger than a cross-sectional area of the wire-pressing groove 22, and a limiting portion 3 which abuts against a bottom of a welding wire is disposed on a side wall of the wire inlet groove 21.

From the above description, the beneficial effects of the present invention are: the cross section area of the wire embedding groove 21 is larger than that of the wire pressing groove 22, so that welding wires can be conveniently led into the welding wire groove 2, and meanwhile, the welding wires can be effectively pressed; the limiting part 3 arranged on the wire inlet groove 21 can limit the welding wire, so that the risk that the welding wire generates position deviation due to vibration of the cutter body 1 and is separated from the wire inlet groove 2 is reduced, and good welding effect and working efficiency are ensured.

Further, a pressing protrusion 4 is further arranged in the wire pressing groove 22, and the pressing protrusion 4 presses against the welding wire.

As can be seen from the above description, the pressing protrusion 4 can increase the pressing force of the cutter body 1 on the welding wire, and ensure the stability of welding.

Further, the number of the pressing protrusions 4 is plural.

As can be seen from the above description, the number of the pressing protrusions 4 can be set according to the actual application requirements, and the diversity of the structure is enriched.

Further, a plurality of the pressing protrusions 4 are symmetrically arranged in the pressing groove 22.

As can be seen from the above description, the pressing protrusions 4 are symmetrically disposed in the pressing groove 22, so that the pressing force applied to the welding wire is more uniform, and the welding effect is improved.

Furthermore, the two opposite side walls of the wire inlet groove 21 are respectively provided with the limiting parts 3.

As can be seen from the above description, the two opposite side walls of the wire-inlet groove 21 are respectively provided with the limiting parts 3, so that the welding wire can be stably limited in the wire-inlet groove 2, and the risk that the welding wire is separated from the wire-inlet groove 2 is further reduced.

Further, the cross-sectional shape of the stopper 3 is circular or trapezoidal.

As can be seen from the above description, the cross-sectional shape of the limiting portion 3 can be set according to the actual application requirement.

Example one

Referring to fig. 1 and fig. 2, a first embodiment of the present invention is: the utility model provides a riving knife for ultrasonic wave aluminium wire press welder, includes the cutter body 1 of being connected with ultrasonic transducer, welding wire groove 2 has been seted up to the tip that ultrasonic transducer was kept away from to cutter body 1, and the welding wire is located in welding wire groove 2, welding wire groove 2 is including the income line groove 21 and the pressure line groove 22 that are linked together, the cross sectional area of income line groove 21 is greater than the cross sectional area of pressure line groove 22, be equipped with the spacing portion 3 of contradicting with the welding wire bottom on the lateral wall of income line groove 21.

Optionally, the number of the limiting parts 3 may be set according to actual application requirements, for example, in this embodiment, the limiting parts 3 are respectively disposed on two opposite side walls of the wire inlet groove 21, so that the welding wire can be stably limited in the wire welding groove 2, and the risk that the welding wire is separated from the wire welding groove 2 is further reduced; or, in some other embodiments, the number of the limiting parts 3 may also be set to be one, and when the number of the limiting parts 3 is one, the limiting parts 3 are connected to the two side walls opposite to the wire inlet groove 21, which can be specifically adjusted according to actual application requirements and is not described herein in any greater detail; further, the cross-sectional shape of the stopper portion 3 may be, but is not limited to, a circular shape or a trapezoidal shape.

Example two

Referring to fig. 3 and fig. 4, the second embodiment of the present invention is a further improvement of the wire pressing groove 22 on the basis of the first embodiment, and the difference from the first embodiment is that: still be equipped with in the pressure wire casing 22 and support and press protruding 4, support and press protruding 4 to press on the welding wire, easy understanding, support and press protruding 4 can increase the pressfitting power that cutter body 1 acted on the welding wire, ensure the welded steadiness.

Optionally, the number of the pressing protrusions 4 is multiple, so that the pressing force of the cutter body 1 acting on the welding wire is further enhanced, the number of the pressing protrusions 4 can be specifically set according to actual application requirements, and the diversity of the structure is enriched.

In this embodiment, it is a plurality of to press protruding 4 to be in the symmetry sets up in wire pressing groove 22, so for the pressfitting power that the welding wire received is more even, does benefit to the promotion of welding effect.

To sum up, the utility model provides a chopper for ultrasonic wave aluminium wire press welder has that the welding effect welds, work efficiency is high and structural style is abundant characteristics.

The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.

Claims

1. The utility model provides a riving knife for ultrasonic wave aluminium wire press welder, includes the cutter body of being connected with ultrasonic transducer, the tip that the ultrasonic transducer was kept away from to the cutter body has seted up the welding wire groove, its characterized in that, the welding wire groove is including the income wire casing and the pressure wire casing that are linked together, the cross sectional area of income wire casing is greater than the cross sectional area of pressure wire casing, be equipped with the spacing portion of contradicting with the welding wire bottom on the lateral wall of income wire casing.

2. The cleaver for an ultrasonic aluminum wire press welder as claimed in claim 1, wherein a pressing protrusion is further disposed in the wire pressing groove, and the pressing protrusion presses against the welding wire.

3. The riving knife for an ultrasonic aluminum wire bonding machine according to claim 2 wherein the number of the abutting projections is plural.

4. The riving knife for an ultrasonic aluminum wire press welder according to claim 3, wherein a plurality of the pressing protrusions are symmetrically arranged in the pressing groove.

5. The cleaver for an ultrasonic aluminum wire press welder as claimed in claim 1, wherein the two opposite side walls of the wire inlet groove are respectively provided with the limiting portions.

6. The cleaver for an ultrasonic aluminum wire press welder as claimed in claim 1, wherein the cross-sectional shape of the limiting portion is circular or trapezoidal.