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an alignment pin

An alignment pin and the corresponding technology, applied in the direction of pins, screws, deformation pins, etc., can solve the problems of short service life and poor use sensitivity, and achieve the effect of improving service life, strengthening strength and improving use sensitivity.

Active Publication Date: 2016-03-16
NEW FOUNDER HLDG DEV LLC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Therefore, the technical problem to be solved by the present invention is to overcome the defects of poor sensitivity and short service life caused by the two-piece structure of the existing alignment pins, so as to provide an alignment pin with high sensitivity and long service life. bit pin

Method used

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Embodiment Construction

[0041] The core purpose of the present invention is to provide an alignment pin with high sensitivity and long service life, which can be used in any mechanism and environment where positioning is achieved through the cooperation of the pin and the alignment hole.

[0042] The core technical solution of the present invention will be introduced below by taking the alignment pin for an exposure machine as a specific embodiment.

[0043] This embodiment provides an alignment pin for an exposure machine, which includes a guide sleeve 2 having an insertion cavity 25, which is inserted into the insertion cavity 25 and can be driven by the operating mechanism along the axial direction of the guide sleeve 2. The moving guide core 1 and the claw post 6, the guide core 1 is provided with a claw post groove 15 along its circumference; the position corresponding to the claw post groove 15 on the guide sleeve 2 There is a claw column chamber 26 communicating outwards, the claw column 6 is ...

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Abstract

The invention provides an alignment pin, wherein a claw column chamber which communicates outwardly is arranged on an alignment guide sleeve, and a claw column groove is formed in an alignment guide core; when in a free state, a claw column is nested in the claw column groove and assembled into the claw column chamber; when an operating mechanism drives the alignment guide core to move axially, the claw column extends from the claw column chamber to a specific height; through the specific extended height, the alignment pin is switched from the free state to the tensioning state. The one-piece alignment guide sleeve arrangement avoids the presence of a joint gap in a two-piece alignment guide sleeve. Moreover, the alignment pin is tensioned through the movement of the claw column without the expansion of the alignment guide sleeve, so that blockage due to increased fit clearance between the alignment guide sleeve and the alignment guide core is avoided. Therefore, the movement sensitivity of the alignment guide core is greatly improved; the alignment pin is easily tensioned and restored to the free state; the use sensitivity is improved; the service life is prolonged.

Description

technical field [0001] The invention relates to an alignment pin, in particular to an alignment pin used in an exposure machine, and belongs to the field of printed circuit board manufacturing. Background technique [0002] Printed circuit board (referred to as PCB board) is composed of an insulating base plate, connecting wires and pads for assembling and welding electronic components. It has the dual functions of conductive lines and insulating base plates, and is an extremely important assembly part in electronic equipment. [0003] When the photochemical method is used to make PCB boards, in the inner layer / outer layer graphics transfer process, it is necessary to use the ultraviolet light source of the exposure machine to transfer the graphics on the film to the photosensitive ink or dry film of the PCB, and then through the developing-etching process to produce PCB semi-finished products with fine lines. [0004] During the production process, the exposure machine cap...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16B19/02
CPCF16B19/02F16B2019/006
Inventor 黄志强
Owner NEW FOUNDER HLDG DEV LLC