SU1225804A1 - Device for automatic rewinding of photographic roll film - Google Patents

Description

The invention relates to a device for winding coils of photographic roll films.

The winding operation on the coils of photographic roll films is performed manually. The most progressive is the coil automat, which operates as follows.

The film is taken from the reels, the protective tapes wound on the reel have designated beginnings and ends and adhesive tape is glued to them for the consumer. When the film reel or reel of protective tape has been consumed, the machine stops. Repeated addition violates the continuity of the automaton's operation and contributes to temporary merely m. The cost of importing such automata is significant and their operation depends on the importation of finishing materials.

A device is known in which winding of coil films with lower productivity occurs on coils (US Patent No. 3,684,623, class B 65 H 19/08, published on August 15, 72).

This disadvantage is eliminated in the proposed device for automatically winding photographic roll films from a film tape and a protective tape. The device is light-tight with a continuous operating mode.

The device comprises a mechanism for connecting the end and the beginning of the subsequent film roll. The mechanism is formed by pads located in opaque spaces, separated by a flap. At the outlet of each film reel cassette, there is a pulsed film presence roller, and devices for visual inspection of the film, a sensitive element of film gluing and a marking drum are located behind the connection mechanism. It is followed by a cutter drum, having a cutting mechanism and a self-adhesive tape application mechanism. The film channel contains a sensitive element of the presence of a self-adhesive tape, a switch for rejecting the rejected film and fits the winding head, to the opposite side of which there is a conveyor with a coil stock store and a protective tape work magazine equipped with a folding drop.

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with a cassette and mechanism for bending the end of the protective tape and moistening the end sticker. At the top is a suction cup and transport rollers for inserting the protective tape.

The proposed device for the automatic winding of photographic films eliminates unproductive manual labor, limits work in the dark, improves the quality of winding, reduces waste, reduces the time for preparation of finishing materials to a minimum, works independently of external lighting, and controls the film, followed by rejection of defects and glued glues without disturbing the operation of the apparatus and allows the use of domestic finishing materials.

0 The device is shown schematically in the attached drawing.

Figure 1 shows the device, side view; figure 2 - the same, front view.

The operation of the device and the interconnection of individual operations are as follows.

The film is unrolled from the opaque cassette 1 and passes

0 through the mechanism 3, which allows the device to continuously attach the beginning of the film from the cassette 2 to the end of the film from the cassette 1 or vice versa. The space of the mechanism 3 for connecting the films is divided into two parts, which are separated by the flap 4, allowing replacement of the cassettes in the light. Through the next roller 15, the film enters the marking drum 16,

0 where the edges of the film are illuminated with frames and film type. From the marking drum 16, the film enters the cutting drum 17, on which the film is supported 5 by pressing. Here, the film is cut to the required length by means of a knife 18, which is rotated in synchronization with the drum 1.

0 A self-adhesive tape is glued to the cut end of the film by means of the mechanism 19, which is unwound from the disk 20. The mechanism 19 ensures its cutting to the required length and

5 correct adhesion to the end of the film. The film from the cutting drum 17 is introduced into the channel 21, from which it is introduced into the winding head

26 where the winding of the film ends. The protective tape is fed into the winding head 26 by the suction tube 29 and is inserted into the coil by transporting rollers 30. After the protective tape is inserted into the coil, the next tape is inserted into the mechanism 32, which bends the end of the protective tape and moistens the end sticker. The protective tapes are unwound from the working store of stock 33. The latter consists of a working platform 34 which raises the layer of protective tape to the level determined by the entrance to the winding head 26. When the supply of protective tapes is exhausted to the minimum level under the remaining layer of protective tapes, the comb 36 is inserted.

When the protective tapes are taken out of the minimum stock, the pad 34 slides down, the supply cassette 37 is located above it, from which pad 34 receives the prepared protective tapes. As the platform 34 moves upward, the comb 36 is released and the feed cassette 37 tilts back. In order to ensure the continuity of individual mechanisms, the device is equipped with a composition of sensitive elements that observe passing gear. From the cassette 1, the film passes through the roller 5 which, by means of an electric pulse, actuates the block 6 to glue the beginning and end of the film and move the flap 4. Next, the film passes through the guide roller 7 using the tension roller 8 to the roller 9, which turns on the device stopping the feeding of the film. Through the roller 10, the film enters the conveying rollers 11 and 12, about

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which is located the device 13 for controlling the film by the lumen and the sensing element of the gluing 14, ry registers the passage of the gluing. Both elements 13 and 14, in conjunction with the switch 23, ensure the rejection of defective parts of the film or adhesives without stopping the machine. A defective film or gluing of the required length, uncut, is brought out by the switch 23 outside the channel 21. In the latter, the film passes the sensitive element 22, which is monitored if self-adhesive tape is glued to the film. Next, the film passes by channel 21 to the optical sensitive element 24, which, when the film passes, gives a pulse to start winding the roll. In the time required for the film to pass from the sensing element 24 to the fixed coil 25, the beginning of the protective tape is wound on the winding head 26. Without stopping the winding, a film is introduced into the roll.

The reel is wound by a channel 27, in which there is a switch 28, which, in case of violation of the opacity of the part where the film passes, removes the finished rolls of film. In the store, the coils 38 of the coil are lifted by means of a lifting mechanism onto the conveyor 39, which feeds them into the winding head 26. The next part of the device is the cabinet 40, in which the electronic part is concentrated, which provides for the drive of mechanisms, their interconnection and control of the operation of the whole device depending on the incoming finishing materials.

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Compiler A.Chursin Editor M.Blanar Tehred I.Popovich M.Samborska Proofreader

Order 2025/16 Circulation 590 Subscription VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., d. A / 5

Production and printing company, Uzhgorod, Projecto st., 4

Claims (1)

DEVICE FOR AUTOMATIC REWINDING OF PHOTOGRAPHIC ROLL FILM, comprising, holders of supply and receiving cassettes, an impermeable film guide, a film cutting mechanism, means for connecting the ends of the film and marking, and a film tracking system, characterized in that, in order to increase productivity , it has means for feeding self-adhesive and protective tapes and a mechanism for bending the end of the protective tape and moisturizing the end sticker, and the tracking system includes a pulsed roller of the end of the film, suitable for a visual inspection film, sensitive elements for gluing the film and the presence of a self-adhesive tape, and _a switch for removing the rejected S film. | χ & FIG. 1