Cooling and heating integrated copper foil conductive pressing machine

Abstract

The invention discloses a cooling and heating integrated copper foil conductive pressing machine. The cooling and heating integrated copper foil conductive pressing machine comprises a heating pressing device and a cooling device, wherein the heating pressing device comprises an upper heating disc, a lower heating disc, multiple heating rods, a conductive power supply and copper foil, the cooling device comprises cooling pipelines, a pump body and a cooling box, the upper heating disc and the lower heading disc are respectively provided with multiple heating rods and multiple cooling pipes, the copper foil is connected with the upper heating disc and the lower heating disc, the cooling pipelines are used for containing cooling media, the conductive power supply, the upper heating disc, the copper foil and the lower heating disc are connected in sequence to form a heating circuit, and the cooling pipelines, the pump body and the cooling box are connected to form a cooling circuit. According to the cooling and heating integrated copper foil conductive pressing machine, after hot pressing is completed, the cooling process is started and is directly conducted in a pressing machine, the hot pressing function and the cold pressing function are integrated, and the working efficiency of the machine is improved.

Description

technical field [0001] The invention relates to the field of circuit board production, in particular to a cold-heating integrated copper foil conducting press. Background technique [0002] At this stage, in the pressing process of circuit boards (PCB), especially for 2-layer and more than 2-layer circuit board (PCB) products, the pressing process mainly includes hot pressing and cold pressing. Hot pressing is to heat the prepreg (such as epoxy resin material) and apply a certain pressure such as 200-500PSI / cm2 to make the prepreg melt and solidify into the required multi-layer circuit board. The cold pressing process is to cool the line to the required temperature according to the cooling speed required by the process after the hot pressing is completed. In the existing copper foil conductive heating and pressing machine, the circuit board is heated by continuous winding of copper foil, and there is a heating plate on the upper and lower sides of the cavity, and its main f...

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Problems solved by technology

[0003] Therefore, the main disadvantages of the existing electric heating pressing machine are as follows: 1. At present, the copper foil conductive heating pressing machine is only a hot pressing machine, which can only be used for hot pressing process, and cannot be used for cold pressing process. , it is necessary to transfer the circuit board products to a cold press or other cooling mechanism for cold pressing. For some problems such as irregular deformation, for some high-density circuit boards, a certain amount of scrap will be generated

2. When the hot pressing is finished, the temperature of the upper and lower heating plates is consistent with the temperature of the circuit board products produced, and generally exceeds 180°C. When the next batch of circuit board products needs to be produced, the temperature of the upper and lower heating plates must be The equipment can only be started when it is lower than 100°C. Therefore, at this stage, after the production of the equipment is completed, the upper and lower heating plates need to be cooled until the temperature drops below 100°C before the next batch of production starts. The cooling time generally takes 25- 35 minutes, resulting in only about 70% equipment grafting rate, low equipment efficiency

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