Variable-speed combined cleaning device for cleaning open recording video tapes

Abstract

The invention relates to the technical field of movie film shaping and repairing, and particularly discloses a variable-speed combined cleaning device for cleaning open recording video tapes. A transmission device and an ultrasonic cleaning box are mounted on a vertical support plate, and the transmission device is connected with a lifting guide wheel set and used for transmitting the recording video tapes; the lifting guide wheel set is arranged on a lifting mechanism in the ultrasonic cleaning box and used for driving the lifting guide wheel set to get in and out of the ultrasonic cleaning box, a tension arm C is arranged between the tape feeding wheel and the guide wheel A, the guide wheel A is connected with one end of the lifting guide wheel set, and the guide wheel B is connected with the other end of the lifting guide wheel set. A main transmission wheel, a tension arm D and a pressing arm are arranged between the guide wheel B and a tape take-up wheel, a pressing arm is arranged on the side edge of the tape take-up wheel, a tension arm C, a tension arm D and a pressing arm are used for tension adjustment of a recording tape. An intelligent control technology is adopted, theopen recording video tape is efficiently cleaned with high quality, the playing effect of the cleaned open recording video tape is improved, and the open recording video tape can be better collectedand repaired.

Description

technical field [0001] The invention belongs to the technical field of film reshaping and repairing, in particular to a combined cleaning device for variable-speed cleaning and opening audio and video tapes. Background technique [0002] In recent years, the opening audio and video tapes of various archives have been rescued and repaired. During the rescue and restoration work, it was found that scientific cleaning of the opening audio and video tapes is a crucial link. [0003] Considering that the base tape material of the opening audio and video tape is thermoplastic polyester PET film, and the tape film is relatively thin, when it is damp, it will cause the opening audio and video tape to absorb the magnetic head and cannot be played. For the opening videotape, its playback requirements are higher. When the VCR is playing, the winding of the videotape on the magnetic drum usually reaches more than 2 / 3 turns. It is easy to absorb, so if the film is wet, it will cause the...

AI Technical Summary

Problems solved by technology

[0003] Considering that the base tape material of the opening audio and video tape is thermoplastic polyester PET film, and the tape film is relatively thin, when it is damp, it will cause the opening audio and video tape to absorb the magnetic head and cannot be played.

For the opening videotape, its playback requirements are higher. When the VCR is playing, the winding of the videotape on the magnetic drum usually reaches more than 2 / 3 turns. It is easy to absorb, so if the film is wet, it will cause the transmission to fail and the video recorder to report an error

In addition, if the video tape is exposed to moisture, dirt, etc., the magnetic powder will fall off and stick to the rotating wheel, shaft, and magnetic drum, which will make the video recorder unable to work normally. Therefore, high-quality cleaning is a necessary prerequisite for collection, rescue, and repair.

[0004] At present, manual cleaning is often used to remove dirt from reel-in audio and video tapes, and it is removed by wiping with non-cotton fabrics. This method cannot remove mildew, and if a little careless, it will damage the tape. Secondary pollution, belt deformation, etc.

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