SU21061A1 - Fixture for continuous film design - Google Patents

Description

The present invention is a device for continuous film design in which two film coils are charged simultaneously and a special switching mechanism is used to alternately couple the teeth of the conveying mechanism, first with one film and then with another.

In the schematic drawing of FIG. 1 is a side elevational view; FIG. 2 is a front view of pulleys and endless belts with prongs.

The fixture (Fig. 1) consists of flexible, for example, steel, endless bands 2 with teeth 3 included in the perforations of the film. The belts 2 bend around the lower drive pulley 1 / associated with the Maltese cross mechanism 10, and the upper freely rotating pulley 12 provided with an eccentric 44 seated on the axis of the sleeve 2 (Fig. 2). The tape 2 passes between the frame 7 with the frame window 11 and the frame 4 provided with a slot b for the passage of the teeth 3 of the tape and a spring 5 for pressing the film against the frame window. In the lower part of the frame 7 there is a roller 9, and in the upper part of it, a folding platform 21 is fixed, mounted on the axis 23 and equipped with a spring 22. The upper reels 13 and 33 s serve as feeds for films 8 and 45

pinch rollers 14 and 32 and lower drums 15 and 31 with pinch rollers 16 and 30.

The switching mechanism, which serves to alternately link the teeth of Zlenta 2 to the right 8, then to the left film 43, consists of a lever 19 with a tooth / 20 coupled to the upper system of levers 34, 43, 37, of which the latter is connected with the eccentric 44 at the point 36. The upper system of levers by means of levers 35, 38 and 39 is articulated with the lower system of levers 41 and 42, of which the latter is connected with a feather 29 having two oblique guide planes 18 and 46, and with pens 17 and 28. For control the whole switching mechanism is the handle 40. To form the lower loops of the films luzhat plates (guides) 25 and 27 with soft, for example, woolen, plates 24 and 26.

The right and left pair of drums 13. 15 and 33, 31 must be driven independently of each other and from pulley 1 so that they can attack the drive motor independently and in turn with the continuous action of mechanism 10 of the Maltese cross.

The effect of the fixture is as follows. First, the right film 8 is shown, which is directed from the right reel to the drum 13 and, forming the upper loop 8, falls on

the teeth 3 of the tape 2 making an intermittent motion through the mechanism of the Maltese cross 10. Passing between frames 7 and 4 in front of the frame window 11, the film forms the lower loop 8 and goes to the drum 15, from where it is wound onto the lower reel. In this case, the entire switching mechanism is in the position shown in FIG. 1, the guide pen 29 is pressed by the plane 46 to the roller 9, and the lever 19 holds the platform 21 in its depressed position with its lower end, so that the end of the left film 45 located on the drum 33 can be charged to it. the platform 21 is folded and the lever 19 does not allow it to touch the moving belt 2.

When the right film 8 is completely reeled off the top coil and its end reaches the pad 21, the demo screening of the second left film 45 is started. For this purpose, the left pair of drums 33, 31 is attached to the drive motor instead of the right one t in action switching mechanism. In this case, the eccentric 44 assumes the position B, and the lever 19 is pressed to the position A, it is shown: in FIG. 1 is dotted and releases the pad 21, which, under the action of the spring 22, assumes the position D, drives the end of the film 43 into contact with the teeth 3 of the moving belt 2. At the same time, the pen 29 is pressed by the plane 18 to the pulley 1, whereby the film 45, the passage between frames 7 and 4 in front of the frame window 11, is directed along the path shown in FIG. 1, with a dotted line, i.e., encountering -per 28 and flap 27, forms the lower shetl 45 and is captured by the teeth of the drum 31, from where it is wound onto the lower roll.

During the demonstration of the left film 45, the next right film 8 is refilled, the end of which is inserted between the tooth 20 of the lever 19, which is in position A, and the eccentric 44, which is turned to position B. At the end of the demonstration of the film 45 by means of the handle 40 again actuating the switching mechanism. In this case, the lever 19 again pushes the pad 21, and the end of the film 8 is caught by the teeth 3, passes between frames 7 and 4 and, meeting the feather 17 and the shield 25, forms the lower loop 8, passes to the drum 15 and winds to the lower coil.

Subject Patent a.

1. A device for the continuous design of films, characterized by the use of flexible endless ribbons 2, provided with teeth 3 for film perforations, which bend around the lower pulley 1 associated with the Maltese cross mechanism 10 and the upper pulley equipped with an eccentric 44 and pass between the frame 7 with a frame window 11 and a frame 4, provided with a slot b for the passage of the teeth of the tape 2 and a spring 5 for pressing the film against the frame window.

2. With the device specified in paragraph 1, the use of a switching mechanism that serves to alternately couple the teeth 3 of the tape 2 to the right film 8, then to the left 45 and consisting of levers 35, 38, 39, which are combined from above by levers 34, 43 and 37 from the levers 19 and the eccentric 44, for guiding the film from the drum 33, and from below — snarling gami 41 and 42 with a feather 29 for guiding the film to the drum 31.

ig.