Semi-gear tension conveying device

Abstract

The invention discloses a semi-gear tension conveying device comprising a shell. A driven roll, a driving roll and a transmission shaft are mounted in the shell; a transmission belt pulley is fixed at the end of the driving roll, two eccentric wheels are fixed on the transmission shaft; the two eccentric wheels can contact to the driven roll with the rolling of the transmission shaft, and allows the driven roll and the driving roll to be a compaction state; a semi-gear with a semi-tooth on the outer circumferential surface is also fixed on the transmission shaft; the shell is also provided with a rotating shaft, a semi-gear clamping stem is mounted on the rotating shaft in a clearance fit way, a protrusion capable of being inserted into the tooth of the semi-gear is arranged at the front end of the semi-gear clamping stem; and the upper surface of the protrusion is an inclined surface. The tension conveying device disclosed by the invention not only can be adjusted in the tension force, but also can keep the position in the use process without loosing phenomenon.

Description

Technical field: [0001] The invention relates to a film laminating machine used for laminating films on electronic products such as mobile phones and MP3s, and more specifically relates to a tensioning conveying device used on the film laminating machine. Background technique: [0002] When the film laminating machine is working, it needs to paste the film on the casing of the mobile phone, MP3 and other electronic products. At this time, the film used is in rolls, and the film is transported by the conveying mechanism for the film laminating machine. The conveying device includes a machine Shell, two rotatable rollers installed in the casing, one of the two rollers is the driving roller, which is used to connect with the power device to provide power, and the other is the driven roller, which is driven by the driving roller to rotate, driven The roller is hinged on the bracket, and the bracket is fixed on a rotatable shaft, so that the driven roller can rotate around the sh...

AI Technical Summary

Problems solved by technology

[0002] When the film laminating machine is working, it needs to paste the film on the casing of the mobile phone, MP3 and other electronic products. At this time, the film used is in rolls, and the film is transported by the conveying mechanism for the film laminating machine. The conveying device includes a machine Shell, two rotatable rollers installed in the casing, one of the two rollers is the driving roller, which is used to connect with the power device to provide power, and the other is the driven roller, which is driven by the driving roller to rotate, driven The roller is hinged on the bracket, and the bracket is fixed on a rotatable shaft, so that the driven roller can rotate around the shaft. When conveying, the film is placed between the two rollers, and the film is clamped by the two rollers. The rear roller rotates to drive the film to move forward, and the force of the two rollers to clamp the film needs to be adjusted. If the clamping force is too large, the film will be damaged. If the clamping force is too small, the film cannot be clamped. For conveying, there is a clamping device on the conveying device, which is generally a transmission shaft with two eccentric wheels on it. The eccentric principle is used to squeeze the driven wheel and provide clamping force. However, the clamping device is When the tension force is provided, it is not stable enough, and it will loosen due to vibration and other reasons, so that the tension force acting on the driven roller changes.

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