Vertical oven with automatic timed door opening device

Abstract

The invention provides a vertical oven with an automatic timed door opening device. The vertical oven with the automatic timed door opening device comprises an oven body and an oven door, wherein a door opening handle is arranged on the oven door; the door opening handle is fixed on the open side of the oven door through a handle fixing block; a cylinder is arranged on the oven body and at a position opposite to the handle fixing block; the cylinder is connected with a pneumatic electromagnetic valve through an exhausting through hole in an end closure; the control end of the pneumatic electromagnetic valve is connected with a controller in the oven body; when the pneumatic electromagnetic valve is opened, a piston rod of the cylinder extends out to press against the handle fixing block so as to jack the oven door open; an elastic sheet is arranged on the oven body and at the part in contact with the edge of the oven door; and when the oven door is jacked open, the elastic sheet pops the oven door outwards. The vertical oven with the automatic timed door opening device has the advantages as follows: the oven door is required to be opened manually in the past, while the oven door of the vertical oven with the automatic timed door opening device can be automatically opened under the action of a pushing force generated by the cylinder and the stainless steel elastic sheet, so that a manual operating step is omitted, the production efficiency is improved and the qualified rate during the production is improved.

Description

technical field [0001] The invention relates to a vertical oven used in the printed circuit board (PCB) industry, in particular to a vertical oven with a time-limited automatic door opening device. Background technique [0002] In the solder mask process of the printed circuit board (PCB) industry, it is necessary to print the ink on the PCB first, and then use a vertical oven to pre-bake the ink after printing the ink. Covering a layer of ink on the copper surface of the PCB board is to prevent the oxidation of the copper surface of the circuit board, to prevent gold and tin from covering the copper surface or lines that do not need to be attached, and to prevent short circuit and oxidation. [0003] The function of the vertical oven is to bake the printed ink circuit board to pre-harden the ink to ensure that the ink will not stick to the board. After the image transfer process has been carried out, the copper used for soldering electronic parts in the SMT process will be ...

AI Technical Summary

Problems solved by technology

If the operator is not on site or does not take out the circuit board (PCB) in time, the circuit board will be radiated and cooled, and the ink will be overbaked after the circuit board (PCB) is left in the oven for 60 minutes beyond the baking limit time of the ink , the ink on the copper surface cannot be developed cleanly during the image transfer process, resulting in ink on the copper surface used to solder electronic parts, thus causing the circuit board to be scrapped

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