Sample positioning mechanism for film scratching instrument

By introducing a symmetrical sample positioning device and an elastic pre-tightening mechanism into the film-cutting apparatus, the problem of unstable sample positioning was solved, sample thickness compensation and pressure uniformity were achieved, and the film-cutting accuracy and operating efficiency were improved.

CN224129571UActive Publication Date: 2026-04-17TIANJIN CHUANYU TECH CO LTD
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Patent Information

Application Number
CN202520942555.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-05-14
Publication Date
2026-04-17
Estimated Expiration
2035-05-14

AI Technical Summary

Technical Problem

The existing scribing apparatus has poor stability in its sample positioning mechanism, which leads to inconsistent scratch depth or coating thickness.

Method used

The symmetrically arranged sample positioning device includes a support frame, guide seat, sliding adjustment structure, sample pressure plate and elastic pre-tightening mechanism. The lateral and longitudinal adjustment of the sample is achieved through multiple sliding rods and locking devices. Combined with the elastic pre-tightening mechanism, the thickness deviation is automatically compensated to ensure pressure uniformity.

Benefits of technology

It achieves adaptive adjustment and stable fixation of the sample, is compatible with samples with large thickness differences, avoids excessive local clamping force or loosening, and ensures the accuracy of the film cutting and the convenience of operation.

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Abstract

The utility model provides a sample positioning mechanism for a film scratching instrument. The sample positioning mechanism comprises two sample positioning devices, the two sample positioning devices are symmetrically arranged on the left and right sides of the material carrying table, a mounting seat is arranged on the lower end surface of the material carrying table, and the bottoms of the sample positioning devices are detachably connected with the mounting seat; the sample positioning device comprises a mounting structure, a supporting frame, a guide seat, a sliding adjusting structure, a sample pressing plate, two pressing plate fixing structures and a plurality of elastic pre-tightening mechanisms. According to the sample positioning mechanism for the film scratching instrument, the problem that the scratch depth or the coating thickness is inconsistent due to the fact that the stability of a positioning mechanism for fixing a sample is poor and the contact pressure between a probe or a spray head of a film scratching tool and the sample fluctuates in the prior art is solved.
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