Sheet-shaped object welding device

Abstract

The invention discloses a sheet-shaped object welding device, which is provided with an ultrasonic welding head, an anvil roller and a gap fine-adjustment connecting rod mechanism, wherein sheet-shaped objects are conveyed to a gap between the ultrasonic welding head and the anvil roller so as to be welded with each other; the ultrasonic welding head is fixed on a moving plate; and the moving plate can move relative to the anvil roller through the gap fine-adjustment connecting rod mechanism so as to enable the ultrasonic welding head to move towards or away from the anvil roller. The sheet-shaped object welding device further comprises a sensing component used for sensing the magnitude of a counter-acting force exerted on the ultrasonic welding head by the sheet-shaped object, the sensingcomponent is provided with a pressure sensor, an upper connecting element and a lower connecting element. According to the invention, the pressure sensor is arranged between the upper connecting element and the lower connecting element, the upper connecting element is connected with the gap fine-adjustment connecting rod mechanism, the lower connecting element is connected with the moving plate,the gap fine-adjustment connecting rod mechanism and the moving plate are connected together through the pressure sensor, and the force borne by the moving plate is further detected. The sheet-shapedobject welding device has the advantages of simple structure, convenient installation and high reliability.

Description

technical field [0001] The present invention relates to the field of manufacturing disposable hygiene articles, in particular to a device for ultrasonically processing a sheet, which is one of single-layer and multi-layer finished or semi-finished products of sanitary articles or similar consumables . Background technique [0002] Conventionally, as a disposable sanitary product, for example, a disposable sanitary product having a front abdomen, a back portion and a crotch portion, wherein the front portion and the rear portion are ultrasonically welded via a pair of side seals (or welded portions) is known. When forming the side seal portion, continuously supply the thermoplastic sheet for constituting the front abdomen and the back portion to an anvil roller that can rotate around a predetermined axis, and cooperate with the anvil and be arranged on the The method between the ultrasonic horns with the outer peripheral surfaces of the anvil roll facing each other. The the...

AI Technical Summary

Problems solved by technology

For example, DE19753740 discloses a device with a pressure sensor for measuring the force applied by the sheet to the ultrasonic welding head. Although the patent proposes the idea of ​​measuring the force through the pressure sensor and then adjusting the gap, the device has complicated installation of the pressure sensor. , the measurement of the force is seriously lagging behind, and the gap cannot be adjusted in real time according to the working conditions, etc.

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