JPS6121741U

JPS6121741U - Multiple paper feed detection device

Info

Publication number: JPS6121741U
Application number: JP10515984U
Authority: JP
Inventors: 正功力; 雅弘金木
Original assignee: 大日本印刷株式会社
Priority date: 1984-07-13
Filing date: 1984-07-13
Publication date: 1986-02-07

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は本考案実施例の全体配置図とその部分拡大図、
第２図は本考案による変位センサの出力波形図、第３図
は第２図波形の拡大詳細説明図、第４図は本考案におけ
る演算処理のブロック構成図、第５図は演算処理の流れ
図である。〈符号の説明〉、１・・・枚葉紙印刷機、２・・・給紙
機、３・・・紙、４・・・収納ケース、５・・・給紙ロ
ーラ、６・・・給紙コロ、７・・・変位センサ、８・・
・増幅器、９・・・Ａ／Ｄ変換器、１０・・・ＣＰＵ，
１１・・・一時記憶装置、１２・・・プログラマ
ブルＲＯＭ、１３・・・増幅器、１４・・・出力信号、
１５・・・比較・判定過程。Figure 1 shows the overall layout of the embodiment of the present invention and its partially enlarged view.
Fig. 2 is an output waveform diagram of the displacement sensor according to the present invention, Fig. 3 is an enlarged detailed explanatory diagram of the waveform in Fig. 2, Fig. 4 is a block diagram of the arithmetic processing in the present invention, and Fig. 5 is a flowchart of the arithmetic processing. It is. <Explanation of symbols> 1...Sheet-fed printing machine, 2...Paper feeder, 3...Paper, 4...Storage case, 5...Paper feed roller, 6...Feed Paper roller, 7... Displacement sensor, 8...
・Amplifier, 9...A/D converter, 10...CPU,
1 1... Temporary storage device, 12... Programmable ROM, 13... Amplifier, 14... Output signal,
15... Comparison/judgment process.

Claims

[Scope of utility model registration request]

Detects multiple paper feeds that occur when sheets of paper are automatically pinched and sent out one by one from a stack of paper by the paper feed rollers in the paper feed section of sheet-fed printing machines, folding machines, etc. In the device, there is a displacement sensor that is installed integrally on the shaft of the paper feed roller and detects the amount of displacement of the paper feed roller as a voltage signal, which moves up and down depending on the thickness of the paper, and a displacement sensor that detects as a voltage signal the amount of displacement of the paper feed roller that moves up and down depending on the thickness of the paper. means for determining the start point of capturing the detected data from the slope of the change in the output level of the displacement sensor when the displacement sensor output level changes; means for temporarily storing, means for calculating the average value of a plurality of past paper thickness detection values and storing it as a reference value for judgment, and means for storing the average value of a plurality of past paper thickness detection values as a reference value for judgment, and a means for storing the average value of a plurality of past paper thickness detection values, and a means for storing the average value of the above-mentioned paper thickness detection values in the past; A multiple paper feed detection device characterized by comprising means for determining multiple paper feed and generating an output when the amount β is exceeded.