Welding system for tablets

Abstract

The invention discloses a welding system for tablets. The welding system comprises ultrasonic welding devices and a speed changing device; the speed changing device comprises a first floating roller for receiving the tablets sent from the upstream position, a second floating roller for sending the processed tablets downwards, a first driving mechanism for enabling the first floating roller and thesecond floating roller to reciprocate transversely in the same direction as well as a second driving mechanism for enabling the first floating roller and the second floating roller to rotate at the variable speed; and one or more groups of the ultrasonic welding devices are arranged between the first floating roller and the second floating roller and perform welding operations on the tablets at the time intervals when the linear speed between the two floating rollers is decreased. The welding system has the advantages of being compact in structure, high in rigidity, low in cost, convenient tomount, prone to minimization and the like, the welding time for materials can be fully guaranteed and can be adjusted flexibly according to the welding effect, and the high-speed production requirement of products can be met while the welding effect is guaranteed.

Description

technical field [0001] The invention belongs to the field of manufacturing disposable sanitary products, in particular to a device for realizing welding by increasing or decreasing the conveying speed of sheets. Background technique [0002] As a disposable hygienic product, for example, a disposable diaper having a front abdomen, a rear back, and a crotch, and ultrasonically welding the front abdomen and the back through a pair of side seals (or welded portions) is known. When forming the side seal portion, at least one pair of thermoplastic sheets used to form the front abdomen and the rear back are continuously supplied between the anvil roll and the ultrasonic horn, and then the thermoplastic sheets facing each other are welded to each other. the welding part. [0003] However, ultrasonic welding requires longer processing time than traditional heat-sealing, so that the welded part can obtain sufficient vibration energy. Therefore, the traditional approach is: one, inc...

AI Technical Summary

Problems solved by technology

[0004] For the former, as described in the patent document Japanese Patent Application Laid-Open No. 2004-330622, a plurality of ultrasonic horns are set relative to an anvil roll, and the load brought by the ultrasonic energy is relatively large, which affects the durability of the anvil roll.

For the latter, reducing the speed of the entire production line in order to process the sheets being conveyed will inevitably reduce the overall productivity.

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