Process for manufacturing blood bag and infusion bag by using three steps and three stations

Abstract

The invention provides a process for manufacturing a blood bag and an infusion bag by using three steps and three stations. The process for manufacturing the bags comprises the following steps of: 1, automatically conveying an upper membrane, a lower membrane and bag manufacturing accessories required for manufacturing the bags through a conveying device on a production line and positioning the upper membrane, the lower membrane and the bag manufacturing accessories on a first high frequency machine, of which the top and the bottom are connected with high frequency and a middle positioning element is grounded, for fusing the accessories with the upper membrane and the lower membrane; 2, automatically conveying and positioning the membranes and the accessories which are subjected to the first step to a second high frequency machine, of which an upper mould is connected with high frequency and a lower mould is grounded, for fusing heads of the two membranes; and 3, automatically conveying and positioning the membranes subjected to the second step together with fused accessories on a third high frequency machine, of which an upper mould is connected with high frequency and a lower mould is grounded, for fusing the rest parts of the two membranes. After the scheme is used, switching of welding modes is avoided, and the structure is simplified, so that the fusing performance is more stable and the auxiliary time is shortened.

Description

Technical field: [0001] The invention relates to the technical field of plastic production, in particular to a process for making blood bags and transfusion bags with three steps and three stations. Background technique: [0002] At present, most of the blood bags (PVC infusion bags) at home and abroad are made of PVC materials. After high-frequency equipment and molds, the accessory tubes and diaphragms of the bag are divided into three parts according to the sequence: tube and diaphragm, head diaphragm, and rest diaphragm. The first step is to sequentially weld blood bags (PVC infusion bags) on the two stations. [0003] When welding at the first station, it needs to be welded twice: first, the upper and lower molds are connected with high frequency, and the central positioning element of the nozzle is grounded to form a tube and a diaphragm for welding. After this step of welding, it is converted into a welding circuit in which the upper mold is connected to high frequen...

AI Technical Summary

Problems solved by technology

[0004] In this way, in the first welding station, the two welding circuits need to be converted to each other, and the two welding steps are carried out in one station, so the time occupied by the first station is the sum of the time of the two steps : t1=ta+tb+t auxiliary. It prolongs the standby time of other stations, increases the time of working steps, and reduces the working efficiency

Become a technical bottleneck restricting the automatic production of blood bags (PVC infusion bags) to improve production efficiency