Equipment and method for performing transfer printing on plate surface

Abstract

The invention discloses equipment for performing transfer printing on a plate surface. The equipment comprises a rack and a central processor; a coining mechanism comprises a pressure-bearing roller at the lower part and a hot pressing roller at the upper part; the pressure-bearing roller is driven by a first motor to rotate; a delivery belt is arranged in the front of the coining mechanism and driven by a second motor to rotate; at least two small holes are formed on the surface of the pressure-bearing roller; a telescopic block is mounted at the orifice of each small hole; a telescopic block driving mechanism for driving the telescopic block to extend out of or retract into the small hole is mounted in the pressure-bearing roller; a first photoelectric eye for monitoring the rotation position of the pressure-bearing roller is arranged beside the pressure-bearing roller and connected with the central processor through a signal wire; and the central processor is connected with the telescopic block driving mechanism, the first motor, the second motor, a transfer printing film unwinding mechanism and a transfer printing film winding mechanism through a signal wire. The equipment disclosed by the invention can automatically perform accurate positioning of the longitudinal position and placing angle of a printing plate. The invention also provides a method for performing transfer printing on the plate surface.

Description

technical field [0001] The invention belongs to the technical field of transfer printing, and in particular relates to a device and method for transferring printing on the surface of a printing plate such as glass. Background technique [0002] The transfer printing equipment for transferring printing on the surface of glass and other substrates includes a transfer film unwinding mechanism, a transfer film winding mechanism, and an embossing mechanism. The imprinting mechanism is equipped with a pair of embossing rollers, which are located below Press roller and heated press roller located above. When each piece of glass (printing plate) is transferred, the transfer film bypasses the heat press roller and sticks to the upper surface of the printing plate, the printing plate is supported above the pressure roller, and the transfer film and the printing plate are sandwiched between the heat press Between the roller and the pressure roller, the transfer film and the printing p...

AI Technical Summary

Problems solved by technology

[0004] However, since belt transmission is prone to slipping (including slipping between the belt and the pulley, and slipping between the belt and the printing plate), it is impossible to control the longitudinal direction of the printing plate only by controlling the rotation angle of the belt motor. accurate positioning

In addition, there will be jitter during the belt transmission process, which will cause unpredictable changes in the placement angle of the glass. And there is a deviation

That is to say, if the belt is conveyed for positioning, the longitudinal position and placement angle of the glass will change unexpectedly and it is difficult to control accurately

[0005] Some people try to rely on the photoelectric eye to monitor and locate the printing plate, but relying solely on the photoelectric eye has the following two problems: 1. The photoelectric eye can only monitor whether a certain point on the front line of the glass passes, but cannot monitor whether the placement angle of the glass is 2. Limited by the installation position, the detection position of the photoelectric eye to the glass must be separated from the embossing mechanism by a certain distance, so even if the photoelectric eye can detect the glass It is already close to the imprinting mechanism, but the glass is still not in contact with the imprinting mechanism at this time, and it still needs to be conveyed forward by the belt for a certain distance. During this conveying distance, slipping may still occur, so the accuracy of the transfer position cannot be guaranteed.

The existing method of relying on workers for positioning has the following disadvantages: 1. The position and placement angle of the glass must be carefully adjusted. The positioning process takes a long time, which makes the production speed of the whole machine low; The glass is relatively heavy and must be handled with care. Generally, two people are required to operate it;

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