Driving device of automatic frame changing billboard

Abstract

This invention relates to a drive device for automatically changing amplitude of billboards in which, two separated picture reels are fixed on the frame by bearings, one reel is fixedly connected with the motor, two sets of oppositely mounted conical thread wheels are fixedly connected with the picture reels, each set of which has two wheels mounted on the two different reels, a thread is set between each set of conical thread wheel winded oppositely and inserted in the screw groove. The same rotation speed of the two picture reels is guaranteed by the conical wheel to avoid interference.

Description

【Technical field】 [0001] The invention belongs to a transmission device for automatic frame-changing billboards, in particular to a transmission device for automatic frame-changing billboards of flexible scrolls. 【technical background】 [0002] Automatic frame-changing billboards can be used to increase the amount of information and dynamics of advertisements, and have better advertising effects. At present, there are many applications at home and abroad. The basic structure is to set up two separate winding shafts, and the rotation of different winding shafts is driven by the motor to realize the frame change, and the advertising picture roll is used as a transmission belt to drive the other shaft to rotate. In the existing transmission mechanism, no matter whether two motors are used to drive two winding shafts or one motor is used to drive two winding shafts through a swing mechanism, it is all driven by driving one winding shaft to make it active. The other axis is a dr...

AI Technical Summary

Problems solved by technology

[0003] 1. The advertising picture scroll is involved in the transmission, and it must be subject to a certain tension. For some advertising picture scrolls made of thinner materials, these transmission tensions will cause the surface of the picture scroll to elongate and appear uneven, or even cause breakage; and only thicker ones can be used. Advertisement picture scrolls made of materials need to increase the illuminance of the light due to poor light transmission, resulting in an increase in the cost of use;

[0004] 2. The transmission mechanism is relatively complicated;

[0005] 3. Poor versatility and variability of institutions

For example: the vertical or horizontal arrangement of the picture scroll shafts, the increase of the number of picture scrolls in the same mechanism, the adjustment of the switching program, the integration and synchronous control of multiple advertising screens, etc., these mechanisms all have limitations

[0006] 4. When multiple advertisements are used, the thickness of the scroll increases, and the positioning of advertisements is not accurate enough

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