Blister forming machine

Abstract

The invention relates to a blister forming machine in paper plastic package. A machine seat is provided; a forming mechanism is arranged on the machine seat and comprises vertical columns arranged on the machine seat, an upper die holder fixedly arranged on the vertical columns and a forming upper die fixedly arranged below the upper die holder; a first cavity is formed in the forming upper die; a forming convex die connected with a first transmission mechanism and arranged movably and vertically is arranged in the first cavity; the forming mechanism also comprises a forming lower die connected with a second transmission mechanism and arranged movably and vertically; the forming lower die is arranged below the forming upper die; a second cavity is formed in the forming lower die and communicated with a gas source provided with a positive pressure source and a negative pressure source; the first cavity of the forming upper die is opposite to the second cavity of the forming lower die vertically; when the forming lower die rises and abuts against the forming upper die, a raw material membrane of the blister is clamped, and a closed working cavity with successive negative and positive pressure sources is formed between the raw material membrane and the second cavity; and the surface of the blister is smooth and provided with no flaws; and the forming depth can be doubled.

Description

technical field [0001] The invention relates to a blister forming machine in paper-plastic packaging. Background technique [0002] In the prior art, paper-plastic packaging needs to put materials into formed blisters, and then seal the blisters and paper cards for packaging. Among them, the blister is formed by a molding machine. At present, the blister molding machine generally preheats the diaphragm first, then sucks it onto the die head of the punch, and then cools it to obtain the formed blister. However, there are air holes on the die head of the punch as an air channel for plastic absorption, because the existence of air holes will make the surface of the formed bulb not smooth, which will affect the aesthetics of the bulb, and the molding depth is also limited. The back thickness is uneven and needs to be improved urgently. Contents of the invention [0003] In view of the technical problems existing in the background technology, the technical problem to be solve...

AI Technical Summary

Problems solved by technology

However, there are air holes on the die head of the punch as an air channel for plastic absorption, because the existence of air holes will make the surface of the formed bulb not smooth, which will affect the aesthetics of the bulb, and the molding depth is also limited. The back thickness is uneven and needs to be improved urgently

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