JPS59133553U

JPS59133553U - Film end detection device

Info

Publication number: JPS59133553U
Application number: JP2765383U
Authority: JP
Inventors: 武本　光平
Original assignee: 新明和工業株式会社
Priority date: 1983-02-24
Filing date: 1983-02-24
Publication date: 1984-09-06

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]

゛　　図面は本考案の１実施例を示すもので、第１図は
全体配置図、第２図はフィルム終端通過検出装置の拡大
詳細図、第３．４図はそれぞれ第２図における■−■矢
視拡大断面図とｍＶ−ＩＶ矢視図、第５図は作動説明図
である。図中、１ぽフィルムロール、３・４はローラ、１３は検
知器、１４ａはフィルム垂直幕状部、２６はフィルム終
端通過検出装置、３１・３２は板状腕部材、３３はリミ
ットスイッチ、３５は傾斜案内付押動子、３７はリミッ
トスイッチ、４０は発信器を示す。゛ The drawings show one embodiment of the present invention; Fig. 1 is an overall layout diagram, Fig. 2 is an enlarged detailed view of the film end passage detection device, and Figs. An enlarged sectional view in the direction of arrows, a view in the direction of mV-IV, and FIG. 5 are operation explanatory diagrams. In the figure, 1Po film roll, 3 and 4 are rollers, 13 is a detector, 14a is a film vertical curtain, 26 is a film end passage detection device, 31 and 32 are plate-like arm members, 33 is a limit switch, and 35 37 is a limit switch, and 40 is a transmitter.

Claims

[Scope of utility model registration request]

(1) In a device in which the film can be drawn vertically upward from a film roll whose lower part is supported in a movable manner using two rollers, a film end passage detection device is swung to the side of the vertical film passage near the film roll. Although the detection device normally waits in a retracted position on the side of the film path, it is activated in the film path when a warning detector, which is installed separately, detects when the remaining amount of film has decreased to a predetermined amount. The terminal end of the film is structured such that the contact point of the detector is opened via the pusher when the film is engaged with the film, and the contact point is closed again when the end of the film passes. Detection device.

(2) The film end passage detection device has two plate-like arm members facing each other with an appropriate interval, each of which has a gradually opening shape at its tip end, and a through hole is bored in each of the tips, and one of the plate arm members faces each other with an appropriate interval. A pusher with an inclined guide is attached to the extended end of the contact opening/closing arm of the detector fixed to the intermediate side of the arm member, and the opening/closing arm is biased in the contact closing direction by a spring force, and the inclined portion of the pusher moves toward both arm members. The pusher is positioned in the through hole, and when the pusher inclined portion and the stretched film are engaged, the film tension overcomes the spring force and opens the contact of the detector via the arm. A film end detection device according to claim 1 of the utility model registration claim.

(3) The film end detection device according to claim 1, wherein the advance notice detector is provided near the film roll and is capable of transmitting a signal when the film roll decreases to around a predetermined diameter.