CN210877992U

CN210877992U - Straight-through type round hole wire guide hole deep cavity welding cleaver

Info

Publication number: CN210877992U
Application number: CN201921697097.0U
Authority: CN
Inventors: 杨强; 贾斌; 邓强; 文泽海; 王辉
Original assignee: Chengdu Jingrong Creation Technology Co ltd
Current assignee: Chengdu Jingrong Creation Technology Co ltd
Priority date: 2019-10-11
Filing date: 2019-10-11
Publication date: 2020-06-30
Anticipated expiration: 2029-10-11

Abstract

The utility model discloses a straight-through round hole seal wire hole deep cavity welds chopper, including being cylindric chopper main part, the welding end of one end of this chopper main part for being the terrace with edge form, the length direction of following this chopper main part on the terminal surface of welding end has seted up the unfilled corner of step form, remains the terminal surface of welding end is the welding terminal surface, is equipped with the segment shape on the welding terminal surface and leads to the groove, the length direction that this segment shape led to the groove with the angle limit length direction of unfilled corner is unanimous, set up the straight hole that is the cylindricality towards the chopper main part along the length direction of this chopper main part on another terminal surface of chopper main part, the aperture in straight hole is 0.1mm-0.4 mm. The utility model is provided with a straight hole, which changes the original big hole into a straight small hole, thus reducing the processing difficulty; the unfilled corner plays a bearing role between the straight through hole and the wire threading hole, and the phenomenon that the wire threading stroke is overlong and the wire threading is not smooth is avoided.

Description

Straight-through type round hole wire guide hole deep cavity welding cleaver

Technical Field

The utility model relates to a microelectronics technical field, especially a straight-through round hole seal wire hole deep cavity welds chopper.

Background

A deep cavity welding chopper for microelectronics adopts a light and flexible gold wire as a welding material, the diameter of the gold wire is generally 18-25 mu m, and 25um is commonly used. Generally, the wire threading operation can be carried out manually with the help of a microscope, a straight-through wire threading hole is generally arranged on a chopper, the depth-diameter ratio of the hole is generally larger, so the processing requirement of the hole is very high, burrs are difficult to avoid during processing in the wire threading hole in the existing deep cavity welding chopper, the wire threading process can be influenced by the burrs, and in addition, the appearance structure of the existing chopper is not limited to a gold wire, so that the gold wire is difficult to stably install on a wire welding machine after penetrating out of the wire threading hole.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems in the prior art, the utility model provides a straight-through circular hole wire guide hole deep cavity welding cleaver, the unfilled corner plays a bearing role between the straight-through hole and the wire feed hole, and the problem that the wire feed stroke is too long and the wire feed is not smooth is avoided; the horn mouth is arranged on the unfilled corner side wall, so that the bending degree of the gold wire is reduced, and the gold wire is not easy to break.

The utility model adopts the technical proposal that:

the straight-through type round hole wire guide hole deep cavity welding chopper comprises a cylindrical chopper main body, wherein one end of the chopper main body is a prismatic table-shaped welding end, a step-shaped unfilled corner is formed in the end face of the welding end along the length direction of the chopper main body, the end face of the welding end is a welding end face, a segment-shaped through groove is formed in the welding end face, the length direction of the segment-shaped through groove is consistent with the length direction of the corner edge of the unfilled corner, a straight-through hole which is cylindrical is formed in the chopper main body along the length direction of the chopper main body on the other end face of the chopper main body, and the aperture of the straight-through hole is 0.1-0.4 mm.

The welding gold wire is manually pushed into the chopper to penetrate through the lower shaking edge of the microscope, in the technical scheme, a straight through hole is formed in the chopper, burrs are difficultly formed on the inner wall of the straight through hole and the edge inside the chopper, and in order to avoid the influence of the burrs on the wire penetration as much as possible, the aperture of the straight through hole is larger, so that the shaking space of the gold wire in the straight through hole is increased, and the burrs are avoided as much as possible; the unfilled corner is set for changing the penetrating direction of the gold wire, so that the gold wire penetrates from 90 degrees to: and threading at 45 degrees or 60 degrees and 30 degrees. (the oblique angle of the wire threading is generally 45 degrees, 60 degrees and 30 degrees) to reduce the processing difficulty, and the gold wire is finally lapped on the spherical segment-shaped through groove for welding. The smaller the through hole is, the greater the threading difficulty is, but the better the positioning accuracy is, and the larger the through hole is, the easier the threading is, but the wire shaking is easy. Generally, the length of the knife which we use to make the cleaver has several series, such as: 25.4mm, 19mm, 16mm, 13mm and the like. Under the condition that the length of the cutter is 16mm and 13mm, the diameter of the through hole is small, the threading positioning is facilitated, and the problem that the threading is not easy to occur is not obvious due to the short cutter bar. In the case of a cutter bar length of 25.4mm and 19mm, the straight hole is made into a larger guide hole diameter due to the fact that the cutter bar is too long, so that wire threading is facilitated. Therefore, the aperture of the straight through hole is set to be 0.1mm-0.5mm, various requirements can be met, threading is facilitated, and positioning accuracy is good.

Furthermore, the side that the unfilled corner and welding terminal surface are adjacent is first side, be equipped with "V" shape and lead to the groove on the welding terminal surface between groove and the unfilled corner in the globular shape, the length direction that this "V" shape led to the groove with the length direction of the angle limit of unfilled corner is unanimous, slope on the first side is equipped with the wire feed hole that extends to one of them side in the groove in "V" shape, and the height that highly is less than the globular shape and leads to the groove of this wire feed hole position in the groove of "V" shape one end is led to the globular shape.

In order to avoid the gold wires from being excessively exposed outside the riving knife, the wire penetrating holes are arranged for the gold wires to pass through and bypass the two ends of the V-shaped through grooves to be lapped on the segment-shaped through grooves.

Furthermore, one end of the wire penetrating hole, which is positioned on the first side face, is provided with a horn mouth along the axial lead direction of the wire penetrating hole.

The bending degree of the gold wire penetrating into the wire penetrating hole is reduced, and the gold wire is prevented from being broken.

Further, the central axis of the wire-passing hole forms an included angle of 45 degrees with the first side surface.

The gold wire penetrates out of the side wall corresponding to the V-shaped through groove from the wire penetrating hole and keeps parallel, so that the bending degree of the gold wire is reduced, and the gold wire is prevented from being broken.

Further, the through hole depth-diameter ratio is larger than 38: 1.

the utility model has the advantages that:

1. a straight hole is arranged in the riving knife, and the original big hole is changed into a straight small hole, so that the processing difficulty is reduced;

2. the unfilled corner plays a bearing role between the straight-through hole and the wire-passing hole, so that the phenomenon that the wire-passing stroke is too long and the wire-passing is not smooth is avoided;

3. the horn mouth is arranged on the unfilled corner side wall, so that the bending degree of the gold wire is reduced, and the gold wire is not easy to break;

4. the utility model discloses simple structure, reasonable in design has improved the success rate of threading.

Drawings

FIG. 1 is a schematic structural view of a straight-through circular hole wire guide hole deep cavity welding cleaver according to an embodiment of the present invention;

fig. 2 is an enlarged view of a point a in fig. 1.

Description of reference numerals:

1. a riving knife body; 2. a through hole; 3. threading holes; 31. a bell mouth; 4. a first side surface; 5. a second side surface; 6. a segment-shaped through groove; 7. a V-shaped through groove.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Examples

As shown in fig. 1-2, a straight-through type circular hole wire guide hole deep cavity welding chopper comprises a cylindrical chopper main body 1, one end of the chopper main body 1 is a prismatic welding end, a step-shaped unfilled corner is formed in the end face of the welding end along the length direction of the chopper main body 1, the end face of the remaining welding end is a welding end face, a segment-shaped through groove 6 is formed in the welding end face, the length direction of the segment-shaped through groove 6 is consistent with the length direction of the corner edge of the unfilled corner, a cylindrical straight-through hole 2 is formed in the other end face of the chopper main body 1 along the length direction of the chopper main body 1 towards the inside of the chopper main body 1, and the aperture of the straight-through hole 2 is 0.1mm-0.4 mm.

The welding gold wire is manually pushed into the chopper to penetrate under the microscope while shaking, in the technical scheme, the straight through hole 2 is formed in the chopper, burrs are difficultly formed on the inner wall of the straight through hole 2 and the edge inside the chopper, and in order to avoid the influence of the burrs on the wire penetration as much as possible, the aperture of the straight through hole 2 is larger, so that the shaking space of the gold wire in the straight through hole is increased, the burrs are avoided as much as possible, the straight through hole 2 is arranged in the chopper, the original large hole is designed into a small hole, and the processing difficulty is reduced; the unfilled corner is set for changing the penetrating direction of the gold wire, so that the gold wire penetrates from 90 degrees to: and threading at 45 degrees or 60 degrees and 30 degrees. (the oblique angle of the wire threading is generally 45 degrees, 60 degrees and 30 degrees) to reduce the processing difficulty, and the gold wire is finally lapped on the spherical through groove 6 for welding. The smaller the through hole is, the greater the threading difficulty is, but the better the positioning accuracy is, and the larger the hole diameter of the through hole 2 is, the easier the threading is, but the thread shaking is easy. Generally, the length of the knife which we use to make the cleaver has several series, such as: 25.4mm, 19mm, 16mm, 13mm and the like. Under the condition that the length of the cutter is 16mm and 13mm, the diameter of the through hole 2 is small, the threading positioning is facilitated, and the problem that the threading is not easy to occur is not obvious due to the short cutter bar. In the case of a cutter bar length of 25.4mm and 19mm, the straight-through hole 2 is made to be a larger guide hole diameter for threading because the cutter bar is too long. Therefore, the aperture of the straight through hole 2 is set to be 0.1mm-0.5mm, various requirements can be met, threading is facilitated, and positioning accuracy is good.

In one embodiment, as shown in fig. 2, a side surface of the notch corner adjacent to the welding end surface is a first side surface 4, a side surface of the notch corner not adjacent to the welding end surface is a second side surface 5, an included angle between the first side surface 4 and the second side surface 5 is 90 °, a V-shaped through groove 7 is arranged on the welding end surface between the notch corner and the spherical notch corner, the length direction of the V-shaped through groove 7 is consistent with the length direction of the corner edge of the notch corner, a wire feeding hole 3 extending to one side surface of the V-shaped through groove 7 is obliquely arranged on the first side surface 4, and the height of one end of the wire feeding hole 3 located in the V-shaped through groove 7 is lower than the height of the spherical notch shaped through groove 6.

In order to avoid the gold wires from being excessively exposed outside the riving knife, the wire penetrating hole 3 is arranged for the gold wires to pass through and bypasses the two ends of the V-shaped through groove 7 to be lapped on the segment-shaped through groove 6.

In one embodiment, as shown in fig. 2, a flare 31 is opened at one end of the threading hole 3 on the first side surface 4 along the axial direction of the threading hole 3.

The bending degree of the gold wire penetrating into the wire penetrating hole 3 is reduced, and the gold wire is prevented from being broken.

In one embodiment, the central axis of the threading hole 3 is at an angle of 45 °, 30 °, 60 ° (typically 45 °) to the first side surface 4.

The gold wire penetrates out of the wire through hole 3 and is parallel to the side wall corresponding to the V-shaped through groove 7, so that the bending degree of the gold wire is reduced, and the gold wire is prevented from being broken.

In one embodiment, the through hole depth to diameter ratio is greater than 38: 1.

the above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims

1. The utility model provides a straight-through round hole seal wire hole deep cavity welds chopper, is including being cylindric chopper main part, and the one end of this chopper main part is the welded end of prismatic table form, its characterized in that: the end face of the welding end is provided with a step-shaped unfilled corner along the length direction of the chopper main body, the remaining end face of the welding end is a welding end face, a spherical unfilled through groove is formed in the welding end face, the length direction of the spherical unfilled through groove is consistent with the length direction of the corner edge of the unfilled corner, a cylindrical through hole is formed in the other end face of the chopper main body towards the chopper main body along the length direction of the chopper main body, and the aperture of the through hole is 0.1mm-0.4 mm.

2. The straight-through circular hole wire guide hole deep cavity welding chopper as claimed in claim 1, wherein the side surface of the unfilled corner adjacent to the welding end surface is a first side surface, a V-shaped through groove is arranged on the welding end surface between the spherical unfilled corner and the unfilled corner, the length direction of the V-shaped through groove is consistent with the length direction of the corner edge of the unfilled corner, a wire through hole extending to one side surface of the V-shaped through groove is obliquely arranged on the first side surface, and the height of one end of the wire through hole in the V-shaped through groove is lower than that of the spherical unfilled corner.

3. The straight-through circular hole wire guide hole deep cavity welding and cleaving tool as claimed in claim 2, wherein the end of the wire guide hole on the first side surface is flared along the axial direction of the wire guide hole.

4. The straight-through circular hole wire guide hole deep cavity welding and splitting cutter as claimed in claim 2, wherein the included angle between the central axis of the wire guide hole and the first side surface is 45 degrees.

5. The straight-through circular hole wire guide hole deep cavity welding cleaver of claim 1, wherein the straight-through hole depth-to-diameter ratio is greater than 38: 1.