Circuit board punching device for circuit board cutting

By utilizing the inner core to drive a one-way slider and a telescopic baffle in the circuit board drilling device, the hole wall is polished, solving the problem of crack propagation on the inner wall of the drilled hole, and improving the yield of circuit boards and the performance of electronic products.

CN224323235UActive Publication Date: 2026-06-05阿博 (CHANGZHOU) MECHANICAL ENGINEERING TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202521541102.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-07-23
Publication Date
2026-06-05
Estimated Expiration
2035-07-23

AI Technical Summary

Technical Problem

During the drilling process of circuit boards, tiny cracks can easily appear on the inner wall of the drill hole, leading to quality problems such as delamination and breakage of the circuit board during the cutting process, which affects the yield and performance of electronic products.

Method used

A circuit board drilling device for circuit board cutting is adopted, which uses an inner core to drive a one-way slider to retract, a telescopic baffle to expand, and a telescopic spring grinding rod to polish the outer side of the hole wall under centrifugal force, so as to accurately locate the position of the hole wall.

Benefits of technology

It effectively prevents the propagation of cracks on the inner wall of the drilled hole, improves the yield of circuit boards and the performance of electronic products, and enhances production efficiency and product quality.

✦ Generated by Eureka AI based on patent content.
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Abstract

The utility model discloses a circuit board punching device for cutting a circuit board, which comprises a drilling tool, a drill rod of the drilling tool is detachably connected with a composite drill bit, the composite drill bit comprises a drill bit shell, the middle position of the outer side wall of the drill bit shell is provided with a plurality of inner grooves which are distributed in a circumferential array, and the inner grooves are communicated with the drill bit shell. A telescopic spring polishing rod is fixedly connected to the center of the interior of each inner groove, each telescopic spring polishing rod is composed of a tubular part fixed into the corresponding inner groove and a rod-shaped part connected to the interior of the tubular part through a spring, and a polishing piece is arranged on the outer side of the tubular part of each telescopic spring polishing rod. The inner core drives the one-way sliding block to contract inwards, meanwhile, the telescopic blocking piece expands outwards, the telescopic spring grinding rod is not blocked any more, the telescopic spring grinding rod is subjected to the centrifugal effect at the moment, then the outer side of the hole wall is polished, and the telescopic spring grinding rod can stretch out only after the inner core is pressed; and the position of the hole wall is accurately positioned.
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