Punching device for formed portable paper bag

Abstract

The invention discloses a forming device for punching a gift rope hole in a portable bag production line. The forming device is characterized in that a long groove and two symmetrical round holes are formed in a stand; a piston rod is connected with an ejection rod; the head of the ejection rod is hinged with a connecting rod; the other end of the connecting rod is hinged with the middle of a receiving plate; the bottom end of the receiving plate is hinged with a travel plate; two ends of the travel plate are inserted into the long groove of the stand; a spring is arranged between the travel plate and a piston; swing shafts are sleeved in the round holes of the stand; a pair of gears with the same tooth number is arranged at the rear ends of the swing shafts; two swing arms are symmetrically arranged on the swing shafts; punching heads are arranged on the swing arms; and a dual-lug connector at the head of a swing tail air cylinder is connected with a force arm which is connected with one swing shaft. During work, the travel plate is pushed by the spring to move forwards along the long groove of the stand, the receiving plate also moves forwards and is inserted into a bag opening of the portable bag; the force arm drives one swing shaft to rotate; another swing shaft is driven by the gear at the rear end of the previous swing shaft to rotate reversely; and the swing arms on the swing shafts drive the punching heads to swing towards the direction of the receiving plate, and thus the aim of punching is achieved.

Description

technical field [0001] The invention discloses a device for punching holes after forming a portable paper bag, belonging to the field of packaging machinery. Background technique [0002] There are four symmetrical small holes on the upper mouth of the handbag, and the small holes are punched out by the existing punching device. The existing paper punching devices such as patent CN1291224C and patent CN2162337Y can only The flat paper is punched before the paper bag is formed, and then the perforated flat paper is made into a paper bag by the traditional paper bag production machine. The different width and narrowness, as well as the accumulated errors of various processing procedures, lead to asymmetry, which affects the overall appearance of the paper bag. Contents of the invention [0003] The disclosed object of the present invention is to provide a forming device for forming handle rope holes on a handbag production line. [0004] The object disclosed in the present...

AI Technical Summary

Problems solved by technology

[0002] There are four symmetrical small holes on the upper mouth of the handbag, and the small holes are punched out by the existing punching device. The existing paper punching devices such as patent CN1291224C and patent CN2162337Y can only The flat paper is punched before the paper bag is formed, and then the perforated flat paper is made into a paper bag by the traditional paper bag production machine. Asymmetry due to different width and narrowness, as well as the cumulative error of each process, affects the overall appearance of the paper bag

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