DE569452C - Multicolor stamping device - Google Patents

Description

Multicolor Stamping Devices They are multicolor stamping devices known with flat stamps, which are stationary on the pressure receiving point during the printing process remain. What these devices have in common, however, is that multicolor stamping is achieved in that several independent stamps by separate ones Drives that are operated one after the other according to the desired number of colors must be brought into print position one after the other. This training has the Disadvantage that the device during the individual printing operations by the required repeated actuation of the drive can slip on the base and that as a result blurred stamp images arise. Another disadvantage is that the pressure doesn't work takes place immediately after the inking, but the stamp only after overcoming from empty aisles fed to the printing point by actuating the drive several times will.

The present invention overcomes these disadvantages by in the Stamp device several stamp carriers designed as flat stamps one after the other immediately after the coloring by a drive in necessarily uninterrupted Sequence of the same resting pressure receiving point are supplied.

This work process is carried out by a worm gear with retrograde motion, which in turn is driven by a motor or by hand will. The individual stamps are preferably in a suitable stamp carrier rotatably arranged, each stamp with a special inking unit inevitably cooperates. To ensure that the stamping device is securely placed or pressed on to enable the object to be printed, the object to be printed be placed on a magnetic pad, which in turn is the stamping device attracts.

The coloring of the stamp or the stamp carrier can either be done by Paint pads or paint boxes take place, either directly or through interposition suitable intermediate elements, such as rubber sheets or the like. When colored with colored ribbons these can either be pressed by the stamp body onto the substrate to be printed or just give their color to the stamp carrier. The device can be used for two-, three- or multi-color printing can be formed by the appropriate Number of stamp carriers is built into the device.

The idea of the invention, which allows other implementation possibilities, is set out in the drawing, namely Fig. R shows a three-color stamp in Front view with the housing wall removed, FIG. 2 a side view of FIG.

The device is enclosed in a housing z. The main bolt b of the punch carrier c is guided in a guide bar 6. The motor g is installed between the guide strip 6 and the housing cover a, which by means of the bevel gears passes on its revolutions to a worm zz, which in turn cooperates with the worm wheel 12. The worm wheel 12 is seated on the shaft of a cylindrical body 13, which has indentations 14 on its circumference, which revolve around the body in a helical manner and, guided backwards, result in an endless curved path. In this path a stone 15 slides, which is fixed by a pin 16 in the bolt b. The cam 13 revolves between the bar 6 and the bearing 17 , at the same time an axial movement of the same is prevented.

The paint box in can be rotated on the shaft i and is set up to accommodate three different colors, each of which is shown on one of the surfaces 2, 3 or q. can be removed. The shaft z is rotatably mounted in the housing z, the carrier c of the stamping device having slots 5 on both sides which extend over the shaft i. In the lower end of the carrier c, the punch carrier shaft d is rotatably arranged, with the three punch surfaces being arranged on it. At the same time, a lever o is articulated on one of the two carriers c and is rotatably connected to the shaft i via an intermediate member. A ratchet wheel s is firmly seated on the shaft i, and three recesses are arranged on its circumference. A pawl 7, which is hinged to the intermediate member P, engages in these recesses. If the bolt b is guided downwards, the intermediate link P is rotated clockwise as a result of the movement of the lever o and thus the ratchet wheel s with the shaft i is rotated further by i2o ° by the pawl 7. This brings a new colored area into working position.

The indexing of the punch surfaces e takes place by a gear wheel g, which sits loosely rotatable on the punch shaft d and is pressed by a spring 8 against a coupling part f. The coupling part f is firmly connected to the carrier of the punch surfaces e and comes into engagement with the coupling parts of this gearwheel when the gearwheel g moves accordingly. When the bolt b slides downward, the holder c is also moved downward with the shaft d, with the wheel g moving along the rack v which is arranged in the housing. The shaft d is rotated by the coupling f, so that the punch surfaces e are rotated. The translation is chosen so that the punch holder is rotated by i2o ° each time it goes down. On the end of the shaft d opposite the coupling f there is a square t which works together with the corresponding control parts $ e in the housing z during the downstairs and brings the corresponding stamp surface into the correct working position and holds it in place during printing. On the same side, a ratchet wheel i is arranged on the shaft d , which works together with a pawl k, the ratchet wheel and pawl preventing the stamp body from turning back by more than 6o 'when going up and thus defining the next working position. The mode of operation of the device is as follows: If the motor 9 is switched on, the cam 13 starts rotating through the intermediary of the bevel gears io, the worm ii and the worm wheel 12. As a result, the stone 15 and with it the bolt b slides downwards. During this descent, the paint fountain m is rotated further by i - o ° via the links o, P, the pawl 7 and the ratchet wheel s. At the same time, the punch holder is switched by i8o by means of the rack v. The control parts zs and t cause an even placement of the corresponding punch surface. If the shaft b moves through the declining cam track 1q. up again, a new stamp surface and a new colored surface come into contact with one another. The pawls k prevent the punch carrier with the punches e from being turned back too far. When there is a renewed decline, the next stamp color is printed and so on, until all three stamp surfaces have printed. Only then is the three-color print finished and the motor switches off again.

Claims (7)

PATENT CLAIMS: i. Multi-color stamping device that can be used during the Printing processes remain stationary at the pressure receiving point, characterized in that that successively several stamp carriers designed as flat stamps directly after coloring in the same operation from a drive from the same are fed to resting pressure receiving point. 2. Multicolor stamp device after Claim i, characterized in that the images of the stamp carrier are indirectly below Transferring the interposition of an image carrier to the receiving point to be printed will. 3. multicolor stamp device according to claim i and 2, characterized in that that the stamp carriers are fed to the printing point in uninterrupted sequence. q .. Multi-color stamp device according to claims i to 3, characterized in that that the common drive is designed as a manual or motor drive. 5. Multicolor stamp device according to claims i to q., characterized in that the pressing of the stamp apparatus on the object to be printed using electromagnetic means a magnetic pad. 6. multicolor stamping device, characterized in that that the coloring of the stamp carrier either by ink pads or takes place directly through paint boxes or through intermediate elements such as rubber plates or the like, is made indirectly. 7. Multi-color stamping device according to claim i to 6, characterized in that the stamp carrier is colored by colored ribbons takes place, which is either pressed by the stamp carrier to the substrate to be printed or just give their color to the stamp carrier.