A kind of punching device and punching method for suspension hole of transfusion bag

Abstract

The invention discloses a punching device for a hanging hole of an infusion bag. The device comprises a bracket, a punching cutting cylinder, a punch, a first female die and a second female die, wherein the punching cutting cylinder, the first female die and the second female die are fixedly mounted on the bracket; the punch is arranged at the front end of a piston rod of the punching cutting cylinder; air blowing holes are formed in the front part of the punch, and air inlets of the air blowing holes are formed in the upper end surface or the lower end surface of the punch; an air chamber is arranged in the second female die and can cover the strokes of the air inlets, so that the air inlets in the stroke of the punch can intercommunicate. According to the punching device, an air blowing channel is arranged on the hanging hole punch, so that the compressed air can be blown out from the front of the hanging hole punch, and a punching area can be cooled, the brittleness of the area can be improved, and as a result, the success rate of punching of the hanging hole can be increased; meanwhile, little adhered waste can be blown away from a punching part through the compressed air, thereby further increasing the success rate of the punching of the hanging hole.

Description

technical field [0001] The invention relates to a transfusion bag processing device, in particular to a transfusion bag hanging hole punching device. Background technique [0002] The bag body filling type infusion product is a new type of flexible packaging infusion product in China. When forming a bag, the unwelded area is reserved on the tail side of the bag as the liquid medicine filling port. [0003] In order to be able to fill the liquid medicine from the side opening of the bag tail, it is necessary to die-cut the infusion hanging hole in the corresponding area of ​​the bag tail to realize the bag body filling type infusion bag tail hanging upward. The non-PVC multi-layer co-extrusion film material is relatively soft. After the bag tail sealing area is welded by high-temperature hot-press welding of the sealing mold, the temperature of the non-PVC multi-layer co-extrusion film in this area is relatively high, and the material will be slightly sticky; In the hole st...

AI Technical Summary

Problems solved by technology

The non-PVC multi-layer co-extrusion film material is relatively soft. After the bag tail sealing area is welded by high-temperature hot-press welding of the sealing mold, the temperature of the non-PVC multi-layer co-extrusion film in this area is relatively high, and the material will be slightly sticky; In the hole station, it is difficult to punch the hanging hole completely, and the waste material is easy to stick to the bag body, so it is difficult to ensure the success rate of punching, which affects the production efficiency. cost of production

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