A method and special equipment for edge sealing of tubular parts

Abstract

The invention discloses a method and special equipment for sealing an edge of a tubular workpiece. The method comprises the following steps: firstly placing the tubular workpiece at the inner side of a cylindrical die; turning up and fixing one end, to be subjected to edge sealing, of the tubular workpiece; enabling the tubular workpiece to cling to one end part of the die; and pressing the end part of the die by an ultrasonic wave die pressing head, thereby accomplishing the fusion-welding edge sealing of a notch at the same time of forming the tubular workpiece by die cutting. The special equipment for sealing the edge of the tubular workpiece comprises a fixed die and the ultrasonic wave die pressing head, wherein the fixed die comprises a base and a cutting tool, and the cutting tool is arranged on the base via a connecting rod and is provided with a cylindrical die cutting edge. The tubular workpiece is manufactured in an ultrasonic wave die cutting mode, fusion-welding edge sealing is performed on the end part of the tubular workpiece at the same time of die cutting, the end part of the tubular workpiece is neat without burr, and the defects that the edge of the end part of the work workpiece is not neat enough and burr is formed easily in the prior art are overcome.

Description

technical field [0001] The invention relates to a medical device, in particular to a tubular part for the medical device. Background technique [0002] In medical equipment such as respiratory masks, tubular parts are needed. The current tubular parts are made of plastic and nylon and other textile fabrics. Plastic tubular parts are easy to produce, but plastic tubular parts are airtight. After the patient wears them, Tubular pieces are tight against the skin and less comfortable. Fabric tubular parts have the characteristics of breathability and can improve wearing comfort, but their production process is much more difficult than plastic tubular parts. [0003] At present, there are two methods for fabric tubular parts. One is to fold and sew a piece of fabric edge in half to form a longer tubular strip, and then cut it into small sections according to the required length to form a tubular part. The tubular part made in this way has two There is no edge sealing at the end...

AI Technical Summary

Problems solved by technology

[0002] In medical equipment such as respiratory masks, tubular parts are needed. The current tubular parts are made of plastic and nylon and other textile fabrics. Plastic tubular parts are easy to produce, but plastic tubular parts are airtight. After the patient wears them, Tubular fits against the skin for less comfort

Fabric tubular parts have the characteristics of breathability, which can improve wearing comfort, but its production process is much more difficult than plastic tubular parts

[0003] At present, there are two methods for fabric tubular parts. One is to fold and sew a piece of fabric edge in half to form a longer tubular strip, and then cut it into small sections according to the required length to form a tubular part. The tubular part made in this way has two There is no edge sealing at the end, the edges are not neat, and it is easy to form flocculent burrs

Another method is to first cut a large piece of fabric into small pieces, and then use the weaving method to seal the small piece of fabric, and then sew it into a tubular shape. Although the tubular piece in this way has an edge, the edge of the weaving method is still not enough. Neat and easy to form flocculent burrs

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