Contact sensing scarper mechanism and full automatic vision printer

Abstract

The invention discloses a contact sensing scarper mechanism and a full automatic vision printer and belongs to the field of printed circuit board (PCB) printers. A scraper lifting module of the mechanism is assembled with a scraper beam; a stepping motor, a screw rod and a slide rail are respectively assembled with a module seat; the screw rod is connected with the stepping motor through a synchronous belt wheel B, a synchronous belt and a synchronous belt wheel A and is connected with an upper sliding block seat; an upper sliding block is assembled with the upper sliding block seat; a lower sliding block seat is connected with the upper sliding block seat through an adjusting bolt; a lower sliding block is assembled with the lower sliding block seat; the upper sliding block and the lower sliding block are respectively matched with the slide rail; the upper end of a spring is connected with the upper sliding block seat; the lower end of the spring is connected with the lower sliding block seat; a photoelectric sensor is assembled with the upper sliding block seat; a sensing sheet which has sensing relation with the photoelectric sensor is arranged on the lower sliding block seat; a scraper seat is assembled with the lower sliding block seat; and a scraper is assembled with the scraper seat. The mechanism is movably assembled with a frame of the full automatic vision printer, so that the control of the mechanism is more intelligent, and the accuracy is higher.

Description

technical field [0001] The invention relates to the field of PCB printing machines, in particular to a contact-sensing scraper mechanism and a fully automatic visual printing machine equipped with the contact-sensing scraper mechanism. Background technique [0002] SMT (surface mount technology or surface mount technology) is more and more widely used because of its advantages of high assembly density, small size and light weight of electronic products, and the volume and weight of SMT components are only about 1 / 10 of traditional plug-in components. It is widely used in the electronic printed circuit board (PCB) industry. Generally, after using SMT, the volume of electronic products is reduced by 40% to 60%, and the weight is reduced by 60% to 80%. When printing PCB boards with SMT solder paste, one of the processes is to squeeze and print the solder paste with a scraper to transfer the solder paste from the stencil to the printed board. The main components of the traditi...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the defects of inconvenient maintenance and long maintenance time of the scraper mechanism in the prior art, thereby affecting production, and being unable to sense the initial position of contact between the scraper and the steel mesh, so as to meet people's urgent desire and complete The market demand for automatic visual printing machines provides a contact-sensing scraper mechanism and a fully-automatic visual printing machine equipped with the contact-sensing scraper mechanism. This contact-sensing scraper mechanism is easy to disassemble and maintain, thereby reducing maintenance time and can sense the scraper. The initial position in contact with the stencil, so that PCB boards of various thicknesses can be printed; this fully automatic visual printing machine can print PCB boards of various thicknesses according to customer requirements, and its control is more intelligent and accurate

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