CN-122007505-A - Cold cutting device for CGA packaging device and use method

CN122007505ACN 122007505 ACN122007505 ACN 122007505ACN-122007505-A

Abstract

The invention discloses a cold cutting device for CGA packaging devices and a use method thereof, which belong to the technical field of cutting, wherein a movable rod is arranged at the left end of a beam of the device, a fixed rod is arranged at the right end of the beam, the movable rod can translate along the beam, a screw and a spring are respectively penetrated between the fixed rod and the movable rod, the distance between the movable rod and the fixed rod is adjustable and determined through the screw, the movable rod and the fixed rod are kept close to each other through the tension of the spring, a metal cutting line is erected between the fixed rod and the movable rod, the metal cutting line is connected with the metal cutting line through the other spring, and the tension of the metal line is kept. When the device is used, the screwing length of the screw is adjusted, the distance between the fixed rod and the movable rod is adjusted, the fastening screw is rotated to shrink the metal cutting line to be in a tight state, the metal cutting line is placed in the central area where the device is connected with the welding post of the printed board, the welding post is rubbed back and forth, and finally, the whole disconnection of the welding post is realized, and the detachment of the device from the printed board is realized. Simple, practical, small and flexible.

Inventors

JIN YIMING
JIANG QINGLEI
WANG XUYAN
ZHANG CHENGHAO
TAN YAQIN
WANG YANQING

Assignees

中国电子科技集团公司第十四研究所

Dates

Publication Date: 20260512
Application Date: 20260408

Claims (9)

1. The utility model provides a be used for CGA encapsulation device cold cutting device, its characterized in that, the device upper end is provided with the crossbeam, the left end of crossbeam is provided with movable rod, the right-hand member of crossbeam is provided with decides the pole, it can translate along the crossbeam to move the pole, decide pole and move and wear to be equipped with screw, spring between the pole respectively, the screw makes and decides the distance between pole and adjustable and confirm, the pulling force of spring makes and decides the pole and keep being close to, decides the pole and has erect the metal cutting line between the pole, is connected with the metal cutting line through another spring, keeps the tension of metal line.
2. The cold cutting apparatus for CGA-packaging device according to claim 1, wherein the wire fastening device comprises a pair of fixed pulleys at lower ends of the movable and fixed bars, respectively, and the wire cutting line passes through the fixed pulleys.
3. The cold cutting device for CGA packaging device according to claim 1, wherein the cross beam is provided with a groove, the end of the moving rod is provided with a protruding part, and the protruding part slides in the groove.
4. The cold cutting device for CGA packaging devices according to claim 1, wherein a boss is arranged at the upper end of the movable rod, and the upper end face of the boss is in contact with the lower end face of the cross beam.
5. The cold cutting apparatus for CGA-packaged devices according to claim 1, wherein the fixed and movable bars are held at an angle of 90 ° to the cross beam.
6. The cold cutting apparatus for CGA-packaged devices according to claim 1, wherein the screw passes through a threaded hole of the fixed rod and the other section abuts against the movable rod.
7. The cold cutting device for CGA-packaged devices according to claim 4, wherein the spring has one end connected to the fixed rod and one end connected to the boss.
8. The cold cutting device for CGA-packaging device according to claim 4, wherein a rotary fastening screw is mounted on the fixed rod, and one end of the metal cutting wire is wound around the rotary fastening screw, and the other end is connected to the boss through another spring.
9. A cold cutting method of a CGA packaged device, characterized in that an apparatus according to any one of claims 1 to 8 is used, said cold cutting method comprising the steps of: S1, measuring the appearance width of a CGA device, and adjusting the screwing length of a screw according to the appearance width of the CGA device to realize the distance adjustment between a fixed rod and a movable rod; S2, rotating the fastening screw to shrink the metal cutting line to be in a tight state; S3, placing a metal cutting line between the movable rod and the fixed rod in a central area where the device is connected with the printed board welding column; s4, friction welding columns are used back and forth by adopting metal cutting lines, and finally, all the welding columns are disconnected, so that the device is removed from the printed board.

Description

Cold cutting device for CGA packaging device and use method Technical Field The invention belongs to the technical field of cutting, and relates to a cold cutting device for a CGA packaging device and a using method thereof. Background The column grid array packaging device is widely applied to space electronic products with higher reliability requirements due to the advantages of vibration resistance, easy cleaning, good thermal matching property and the like. Along with the large amount of applications of the packaging device, part of CGA packaging fault parts exist, the CGA packaging fault parts after plate-level assembly is required to be removed, a repair table is adopted for heating and removing, the problem of secondary remelting of welding spots inside and outside the device exists, the removed CGA packaging device fault is not reproduced, and the device troubleshooting difficulty is greatly increased. The patent application numbers CN202510199984.9 and CN202511098196.7 in China respectively describe a cutting method of welding columns used for CGA packaging devices, wherein the patent application number CN202510199984.9 in the prior art describes that after the welding columns are drawn, the welding columns are cut by a cutting machine and finally cut into welding columns with different lengths, the patent application number CN202511098196.7 describes that after the welding columns are drawn, equipment is adopted to automatically detect the lengths of the welding columns and cut the welding columns, the application backgrounds of the welding columns are all the length cutting in the production process of the welding columns, the prior patent application numbers in the prior art do not relate to the fact that after the plate-level assembly of the CGA devices is finished, and the prior patent application numbers in the prior art cannot realize when the distance between the devices in the horizontal direction is narrow due to barriers on the upper side and the lower side. Therefore, a cold cutting dismantling method and device for CGA packaging devices are needed, the problem of rapid dismantling of the CGA packaging devices with board-level faults is solved, and accurate positioning of the faults is achieved. Disclosure of Invention The invention provides a cold cutting dismantling method and device for a CGA packaging device. The application of the method enables the fault analysis efficiency of the CGA device to be remarkably improved. The application of the cold cutting dismantling tool reduces the difficulty of cold cutting dismantling, improves the efficiency of device dismantling, reduces the heating times of the printed board, and improves the long-term reliability of the product. Be used for CGA encapsulation device cold cutting device, the device upper end is provided with the crossbeam, the left end of crossbeam is provided with moves the pole, the right-hand member of crossbeam is provided with decides the pole, it can translate along the crossbeam to move the pole, it wears to be equipped with screw, spring between pole to decide the pole respectively, the screw makes and decides the distance between pole and the pole adjustable and confirm, the pulling force of spring makes and decides the pole and keeps being close to, decides the pole and is equipped with the metal cutting line between the pole, is connected with the metal cutting line through another spring, keeps the tension of metal wire. Further, the wire fastening device comprises a pair of fixed pulleys respectively positioned at the lower ends of the movable rod and the fixed rod, and the metal cutting wire passes through the fixed pulleys. Further, the cross beam is provided with a groove, the end of the moving rod is provided with a protruding part, and the protruding part slides in the groove. Further, the upper end of the movable rod is provided with a boss, and the upper end face of the boss is in contact with the lower end face of the cross beam. Further, the fixed rod and the movable rod keep an included angle of 90 degrees with the cross beam. Further, the screw passes through the threaded hole of the fixed rod, and the other section is propped against the movable rod. Further, one end of the spring is connected with the fixed rod, and the other end of the spring is connected with the boss. Further, a rotary fastening screw is arranged on the fixed rod, one end of the metal cutting line is wound on the rotary fastening screw, and the other end of the metal cutting line is connected with the boss through another spring. A cold cutting method of CGA packaged devices using an apparatus of any of the foregoing, the cold cutting method comprising the steps of: S1, measuring the appearance width of a CGA device, and adjusting the screwing length of a screw according to the appearance width of the CGA device to realize the distance adjustment between a fixed rod and a movable rod; S2, rotating the fastening screw to shrink the