DE575641C - A tool similar to a drawing spring and a machine for creating colored grid lines on films - Google Patents

Description

The invention relates to a tool and a machine for producing colored ones Grid lines on films in three or more colors.

In known devices of this type, the color lines by means of rollers to that the lines run around helically.

According to the present invention, the lines are generated using extension springs, the jaws of which are formed from knife-like blades, preferably blades, how they are used in the razors. The precisely ground, flexible blades are paired in very finely adjustable tools clamped in such a way that each point has its long cutting edge touches the film to be processed, and that the sharp cutting edges prevent the lines from running out form.

The machine carrying such pull springs is a rotatable carousel bowl with a flat edge. All around under the rim is one on the floor of the workshop Number of film-covered rewinders of known construction set up. The rewinder can be arranged at any angle to the horizontal axis of the carousel bowl be. At the moment in which the at certain distances from each other on the If the springs on the edge of the tray do not touch the film, the rewinder will indexed by cams attached to the rim of the bowl. Since the respective from The area lined with the pull springs is very small, it is usually the case that the switching is concerned only a fraction of a millimeter.

The large number of tension springs and the rewinder ensures great performance.

The drawing represents an embodiment of the subject matter of the invention, and though

Fig. Ι and 4 the pull spring with clamping device seen from the side and from above,

Fig. 2 two blades placed against one another with a comb in between, in a greatly enlarged Scale,

Fig. 3 a comb with a 5 "blade underneath,

. Fig. 5 and 6 show a machine (carousel tray) with rewinders placed underneath in View from above and in section,

Fig. 7 with a number of draw springs attached to the edge of the carousel bowl underlying film stretched over a roller.

The pulling spring essentially consists of two at an angle of about 16 to 17 ° to each other provided, sharpened, and thus thin-walled flexible steel sheets α (Fig. Ι and 2) of the type as represented by the blades of the razors. With two cheek blocks b (Fig. 1) made of pock wood, hard rubber or the like and a well-fitting

Claims (3)

the intermediate wedge c made of cork, rubber or the like. The blades are clamped on a couple of tubes / (Fig. ι and 4). A comb d (Fig. 3) cut from thin metal foil is clamped between the two inner cutting surfaces, which precisely defines the desired distance between the two cutting edges. The comb may also be replaced by at the intermediate wedge c fixed fine wire tines that form a kind of rake. It should be noted that the comb or rake teeth are spaced so far above the cutting edge that the strips of paint solution flowing down between the teeth can unite with one another before they reach the film surface. So that the cutting edges of the blades forming the drawing spring, which are bent along a circular line by the wedges b , touch the film over their entire length, they must be ground out accordingly. The sharp edges prevent the lines from flowing out, even in freshly moist neighboring lines. The cheek blocks must also be cut or sanded very precisely. The flexible intermediate wedge c is provided with two vertical, funnel-shaped holes e (Fig. 4) for the purpose of supplying the color solution, which can be contained in small bottles, which are arranged on the edge of the carousel bowl above the draw springs. The tubes f and bolts g also pierce across the wedge c to hold it in place between the two blades. The tubes f, which by means of the bolts g and the nuts m carry the blades α between the jaws b , are again inserted well into another two tubes h , but easily slidable, so that the blades can be pushed with the help of one at the other end of the tube f attached worm gear i can be adjusted as precisely as possible. This setting must be secured in such a way that no vibration or oscillation can cause a change. The machine (Fig. 5) can have a diameter of about 8 m, so that it is possible to to accommodate a large number of tension springs on its edge and many rewinders under its edge. The main springs are distributed in such a way that 20 one color group and three color groups together form a department. After the last drawing spring of such a department has passed over the film, the latter is by means of a ratchet that acts on the rewinder, switched on. After this movement the Rewinder, which corresponds to the width of the lines already achieved by a department, is the next department, which has to do exactly the same thing, in activity and so a 3rd, 4th, 5th and 6th department. The conical machine (Fig. 6) is sunk into the foundation like a funnel. On their flat edge k , the tension springs are either rigidly attached and only adjustable by means of their worm gear or they are attached to swing at one end (where the worm gear is located) so that the end on which the blades are located move vertically can. In the case of a rigid attachment, a certain elasticity must be ensured for the support tubes by increasing the length of the support tubes / and by choosing the appropriate material. The machine, suspended at the top, can also have its flat edge k float above the rewinders and thus be accessible from below. In any case, it is very important to ensure a perfectly calm, §0 impact-free movement. When distributing the main springs in six departments with the same effect are useful 20 each filled with a color solution. The color solutions are extracted through tubes from the storage containers attached to the edge of the carousel disk above the draw springs supplied to the instruments at the given time by air pressure. Another pipe system sucks in any excess that occurs immediately off. Since the main springs are immersed in the appropriate washing vessels immediately after they have been shut down to prevent the fine slots from sticking together, either the whole carousel bowl can be lifted or the flat edge can be moved upwards by itself, what can be done with known technical means with a single lever handle. The drive can either from the central axis or better at the periphery from below with several motors and friction drives happen .. PxVTENTAN PROBLEMS: i. A tool similar to a drawing spring for producing colored grid lines on films, characterized in that the jaws of the drawing spring are supported by two sharp, flexible blades (a), e.g. B. razor blades are formed, which are set by inserting a thin comb or rake prongs (d) parallel to each other and at a certain distance from each other in such a way that both cutting edges lie in one plane. 2. Machine for generating colored raster lines on films with a tool according to claim 1, characterized by a funnel-shaped carousel shell (p) rotatable about its axis flat edge (&)., which carries the tools according to claim ι in a certain distribution, and under the flat edge (k) on the floor of the workshop, covered with the film rewinder (/), which is driven by switching cams of the carousel shell (ρ) driven intermittently. 3. Tool according to claim 1, which is to be used in a machine according to claim 2, characterized in that both blades (a) are bent by clamping jaws (b) according to the radius of the carousel shell (in) and are ground so that each Point of their cutting edges touches the film. 1 sheet of drawings