CN112828408A

CN112828408A - Integrated tool for TO-263 packaging device and method for welding shearing legs and connecting wires

Info

Publication number: CN112828408A
Application number: CN202110055985.8A
Authority: CN
Inventors: 刘倩慧; 陈易山; 胡向莉
Original assignee: Xian Microelectronics Technology Institute
Current assignee: Xian Microelectronics Technology Institute
Priority date: 2021-01-15
Filing date: 2021-01-15
Publication date: 2021-05-25
Anticipated expiration: 2041-01-15
Also published as: CN112828408B

Abstract

The invention discloses an integrated tool for a TO-263 packaging device, a leg shearing and wire connecting welding method, and belongs TO the field of electronic device processing. According TO the integrated tool for the TO-263 packaging device, the leg shearing tool and the connecting wire welding method, the leg shearing tool and the connecting wire welding tool are integrated into one tool, so that the quality of leg shearing and connecting wire welding of the TO-263 packaging device is ensured, and the efficiency is improved; the TO-263 packaged device is positioned through the groove, and the guide legs are fixed through the positioning bosses, so that the stress of the glass insulator at the root of the guide legs of the device is avoided when the legs are cut, and the problem of device failure caused by breakage of the glass insulator is avoided; the arrangement of the positioning boss at the rear end of the device limiting body can expose the position of a device pin needing to be connected and welded, and ensure that no redundant material is introduced to the device during connection welding to influence the insulating property of a product.

Description

Integrated tool for TO-263 packaging device and method for welding shearing legs and connecting wires

Technical Field

The invention belongs TO the field of electronic device processing, and particularly relates TO an integrated tool for a TO-263 packaging device and a method for welding shearing legs and connecting wires.

Background

The TO-263 packaging device is widely applied TO aerospace electronic and electrical products due TO the characteristics of good heat dissipation performance and capability of conveniently adding a heat sink. At present, there are two installation methods used in the art: one is vertical installation, namely, the device and the radiating block are assembled together through an installation hole on the device, then the radiating block is mechanically assembled on a printed board, and a device lead is directly welded in a metalized hole of the printed board; and the other type is horizontal mounting, namely the device and a product machining part are assembled through a mounting hole on the device, and then the device lead leg is connected with a metalized hole on a printed board through a flexible connecting line. The second method is suitable for products with compact structure due to low installation space requirement. The TO-263 packaging device which is horizontally installed needs TO be subjected TO the steps of leg shearing, wire throwing welding and the like in advance, the device is assembled in a trial mode at an appointed position of a machined device in the past, the reserved length of the device leg is determined by measuring the distance between the device leg and a printed board, then the device is disassembled, a steel plate ruler is used for shearing the leg on the side of the side length of the device leg, after the leg is sheared, the device is fixed on an anti-static workbench by using a non-transfer adhesive tape, and a wire is wound and welded on the device leg. The operation method has the defects that when the device shears the legs, the glass insulator at the root of the leading leg is stressed, the glass insulator is split possibly, the air tightness of the device is influenced, and the device is invalid; when the device is connected and welded, the splashed tin slag can be adhered to a metal body or a glass insulator of the device, the insulating property of the device is influenced, and redundant substances are introduced; meanwhile, the operation consistency of the edge measuring and shearing is poor, the efficiency is low, and the risk of wrong shearing exists.

Disclosure of Invention

The invention aims TO overcome the defects of poor operation consistency and low efficiency of a TO-263 packaging device, and provides an integrated tool for the TO-263 packaging device, a leg shearing method and a connecting wire welding method.

In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:

an integrated tool for cutting legs and welding connecting lines of a TO-263 packaged device comprises a device limiting body, wherein a plurality of parallel grooves are formed in the device limiting body, the front and the back of each groove penetrate through the device limiting body, and a plurality of positioning bosses are arranged at the front and the back ends of each groove;

the width and the height of the groove are respectively equal TO those of the TO-263 packaged device, and the length of the groove is greater than or equal TO that of the TO-263 packaged device;

the front end of the device limiting body is provided with a detachable pressing plate, and when the pressing plate is arranged on the device limiting body, the pressing plate and the device limiting body are parallel and level;

the rotatable apron that is equipped with on the device spacing body, when both align, can the integration frock of lock.

Furthermore, the pressing plate is arranged on the device limiting body through a rivet.

Furthermore, the cover plate is rotatably arranged on the device limiting body through a screw.

Furthermore, gaps between adjacent positioning bosses are used for positioning pins of the TO-263 packaging device, and the number of the positioning bosses is-1.

Further, the gaps between adjacent locating bosses are equivalent TO the pins of the TO-263 packaged device.

The leg shearing method of the integrated tool comprises the following steps:

the TO-263 packaging device is placed in the groove of the device limiting body, so that the lead of the TO-263 packaging device is positioned in the gap of the positioning boss, and the position of the TO-263 packaging device in the length direction is adjusted until the redundant part of the lead is flush with the outer end face of the pressing plate;

installing a pressing plate until the pressing plate is jointed with the device limiting body;

rotating the cover plate, aligning the cover plate with the device limiting body, and buckling the cover plate and the device limiting body into an integrated tool;

cutting off the redundant part of the guide leg by using leg cutting pliers close to the edge of the limiting body of the device;

and after the leg shearing is finished, unscrewing the cover plate, taking down the pressing plate and taking out the TO-263 packaged device.

The invention discloses a connecting line welding method of an integrated tool, which comprises the following steps:

the TO-263 packaged device is placed in a groove of a device limiting body, and at the moment, a pin of the TO-263 packaged device is positioned in a gap of a positioning groove at the rear end of the device limiting body;

rotating the cover plate until the cover plate is aligned with the device limiting body, and buckling the cover plate and the device limiting body into an integrated tool;

placing the integrated tool on an anti-static workbench to perform wire connection welding work;

and after the connection welding is finished, unscrewing the cover plate, taking down the pressing plate, and taking out the TO-263 packaged device.

Compared with the prior art, the invention has the following beneficial effects:

according TO the integrated tool for the TO-263 packaging device, the leg shearing tool and the connecting wire welding method, the leg shearing tool and the connecting wire welding tool are integrated into one tool, so that the quality of leg shearing and connecting wire welding of the TO-263 packaging device is ensured, and the efficiency is improved; the TO-263 packaged device is positioned through the groove, and the guide legs are fixed through the positioning bosses, so that the stress of the glass insulator at the root of the guide legs of the device is avoided when the legs are cut, and the problem of device failure caused by breakage of the glass insulator is avoided; the arrangement of the positioning boss at the rear end of the device limiting body can expose the position of a device pin needing to be connected and welded, and ensure that no redundant material is introduced to the device during connection welding to influence the insulating property of a product.

Drawings

FIG. 1 is a three-dimensional view of a TO-263 packaged device in a leg-shearing operation;

FIG. 2 is a three-dimensional view of a TO-263 packaged device undergoing a wire bonding operation;

wherein: 1-a device spacing body; 2-TO-263 packaged devices; 3-cover plate; 4-riveting; and 5, pressing a plate.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The invention is described in further detail below with reference to the accompanying drawings:

referring TO fig. 1, fig. 1 is a three-dimensional view of a TO-263 packaged device during leg shearing operation, and when a TO-263 packaged device 2 is subjected TO leg shearing operation, the TO-263 packaged device 2 is placed in a device slot in a device limiting body 1, a pressing plate 5 is installed, the pressing plate 5 is tightly attached TO the device limiting body 1, a cover plate 3 is rotated TO align the cover plate 3 TO the device limiting body 1, and the cover plate 3 is pinched with the device limiting body 1 TO obtain an integrated tool; a lead leg of the TO-263 packaged device 2 is rightwards and upwards, and a leg cutting clamp is used for tightly abutting against the edge of the device limiting body 1 TO cut off the lead leg of the redundant device; and after the leg shearing is finished, unscrewing the cover plate 3, taking down the pressing plate 5 and taking out the TO-263 packaged device 2. The pressing plate 5 is riveted on the device limiting body 2 through a rivet 4; the cover plate 3 is connected with the device limiting body 2 through a screw, and free rotation between the cover plate and the device limiting body is achieved.

Referring TO fig. 2, fig. 2 is a three-dimensional view of a TO-263 packaged device during a wire bonding operation, when the TO-263 packaged device 2 is wire bonded, the TO-263 packaged device 2 is rotated 180 degrees and placed in a device slot in the device spacing body 1, and the cover plate 3 is rotated TO be aligned with the device spacing body 1; and placing the integrated tool on an anti-static workbench TO perform connection welding work, unscrewing the cover plate 3 after the connection welding is finished, taking down the pressing plate 5 and taking out the TO-263 packaged device 2.

Through verification, the TO-263 packaged device is subjected TO leg shearing operation in the tool, the lengths of the guide legs are consistent, and the device body and the glass insulator at the root of the guide leg of the device are intact and have no damage; and the connection welding meets the relevant quality requirements, thereby ensuring the production quality and improving the production efficiency.

The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.

Claims

1. An integrated tool for welding a shearing leg and a connecting line of a TO-263 packaged device is characterized by comprising a device limiting body (1), wherein a plurality of parallel grooves are formed in the device limiting body (1), the front and the back of each groove penetrate through the device limiting body (1), and a plurality of positioning bosses are arranged at the front and the back ends of each groove;

the front end of the device limiting body (1) is provided with a detachable pressing plate (5), and when the pressing plate (5) is arranged on the device limiting body (1), the pressing plate and the device limiting body are parallel and level;

the device limiting body (1) is rotatably provided with a cover plate (3), and when the device limiting body and the cover plate are aligned, the device limiting body and the cover plate can be buckled into an integrated tool.

2. The integrated tool for the TO-263 packaged device leg shearing and wire bonding as claimed in claim 1, wherein the pressure plate (5) is arranged on the device limiting body (1) through a rivet (4).

3. The integrated tool for the TO-263 packaged device leg shearing and wire bonding as claimed in claim 1, wherein the cover plate (3) is rotatably arranged on the device limiting body (1) through a screw.

4. The integrated tool for the TO-263 packaging device TO shear the legs and weld the connecting wires according TO claim 1, wherein the gaps between the adjacent positioning bosses are used for positioning the pins of the TO-263 packaging device (2), and the number of the positioning bosses is-1.

5. The integrated tool for the TO-263 packaged device TO shear legs and wire bonding of claim 4, wherein the gaps between adjacent positioning bosses are equivalent TO the pins of the TO-263 packaged device (2).

6. The leg shearing method of the integrated tool based on any one of claims 1 to 5, characterized in that:

the TO-263 packaging device (2) is placed in a groove of a device limiting body (1), so that a pin of the TO-263 packaging device (2) is positioned in a gap of a positioning boss, and the position of the TO-263 packaging device (2) in the length direction is adjusted until the redundant part of the pin is flush with the outer end face of a pressing plate (5);

installing a pressing plate (5) until the pressing plate (5) is attached to the device limiting body (1);

rotating the cover plate (3), aligning the cover plate (3) with the device limiting body (1), and fastening the cover plate (3) and the device limiting body into an integrated tool;

the redundant parts of the guide legs are cut off by using leg cutting pliers to abut against the edge of the device limiting body (1);

and after the leg shearing is finished, unscrewing the cover plate (3), taking down the pressing plate (5), and taking out the TO-263 packaged device (2).

7. The line welding method of the integrated tool based on any one of claims 1 to 5, characterized in that:

the TO-263 packaging device (2) is placed in a groove of a device limiting body (1), and at the moment, a pin of the TO-263 packaging device (2) is positioned in a gap of a positioning groove at the rear end of the device limiting body (1);

the cover plate (3) is rotated until being aligned with the device limiting body (1), and the cover plate and the device limiting body are buckled into an integrated tool;

and after the connection welding is finished, unscrewing the cover plate (3), taking down the pressing plate (5) and taking out the TO-263 packaged device (2).