Novel punching die for easy-to-tear films on polypropylene infusion bags

Abstract

The invention discloses a novel punching die for easy-to-tear films on polypropylene infusion bags. The punching die comprises a vertical column I (1), a vertical column II (2), a female die (3), a male die (4), a constant-pressure air source (5), and a workbench (6) arranged between the vertical column I (1) and the vertical column II (2). An air cylinder (10) is fixedly installed on the bottom surface of a supporting beam (9). The action end of a piston rod of the air cylinder (10) is provided with the male die (4). The left end and the right end of the male die (4) are fixed to two sliding blocks (8) respectively. An air inflow pipe (14) and an air nozzle (15) are arranged in an L-shaped channel (13). One end of the air inflow pipe (14) is connected with the air nozzle (15). The other end of the air inflow pipe (14) is connected with the output end of the constant-pressure air source (5). An annular groove (16) for collecting powdered scraps of the easy-to-tear films is formed in the inner wall of a groove of the female die (3). The punching die has the beneficial effects that punching accuracy is high, safety and reliability are achieved, the easy-to-tear films are convenient to take out, and punching efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of easy-tear film punching, in particular to a die-cutting die for a novel easy-tear film on a polypropylene transfusion bag. Background technique [0002] At present, the middle plug at the mouth of the soft bag infusion product is usually sealed with an easy-tear film, which requires a special design of the easy-tear film die-cutting die on the filling machine. The film is die cut into smaller format easy tear films. The existing punching die includes a die and a punch. The punch is arranged below the die, and the punch is fixed on the hydraulic cylinder. When working, the easy-to-tear film to be cut is placed flat on the top of the die, and then controlled The piston rod of the oil cylinder is stretched out, and the die is matched with the punch, so that the large-size easy-tear film is punched into a small-size easy-tear film. [0003] However, this kind of punching die will produce easy-to-tear film p...

AI Technical Summary

Problems solved by technology

[0003] However, this kind of punching die will produce easy-to-tear film powder during the punching process. As the operation continues, the easy-to-tear film powder will gradually block the joint between the punch and the die, thereby affecting the punching accuracy. To avoid this defect, workers will clean the powder in the groove at intervals, which will undoubtedly reduce the punching efficiency of the easy-tear film and affect the production output of the easy-tear film

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