DE1549822A1 - High-speed printer for data processing machines working in the roller printing process - Google Patents

Description

Patent description.

The invention relates to a rolling printing process High-speed printer for data processing machines with an opposite the printing pad cycloidal movement of the type carrier that is generated by a planetary gear with internal circulation.

In known embodiments of this type, such as, for example from the Swiss patent specification 232 781 is, the cycloidal movement of the planet gear is used to produce the rolling pressure. The invention is the Knowledge based on the fact that the movement of the planetary gear is in addition also use it to set the type to be printed in each case and thereby use the entire! Machine, i.e. the setting of the types, the printing process and the resetting of all individual elements, if possible from a single one Body, or can be controlled by a single adjustment movement.

According to the invention, this difficult problem is more ideal Way has been solved in that as an adjusting device for the type carrier serving as a planetary gear each pressure stage a variable in length Web of the planetary gear is provided.

0098St / 1591

aside from that

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In addition, it is advantageous that the length-variable web by one or more radially guided in the drive shaft Support elements is formed.

In terms of the task, it is that the two ends of the support element designed as a bolt by two each other opposing energy stores of different sizes are held in contact with the inner surface of the ring-shaped type carrier, wherein the one bolt the type carrier under the action of a controllable locking member within the transmission in a central Location holds.

It is expedient here that a ring which surrounds the drive shaft and is spring-supported against it serves as the blocking element, on the one hand one or more stops cooperating with a control element and on the other hand a locking lug for engaging in has a haste provided on the bolt.

It is advantageous that a run-up surface as a back-up device is used for each carrier element holding the type carrier.

Finally, it is recommended that between the type carrier and its carrier element a mutual basic position securing.Endrast is provided.

The invention is explained, for example, with the aid of the drawing. Show it:

1 shows the new construction in an end view along the line A-A from Pig. 2, cut,

Pig. 2 is a side view cut along line G-C Pig. 1, ■

Pig. 3 shows a cross section along line B-B from Pig. 2.

Thereafter

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Thereafter, there is a pair of bolts radially in a drive shaft 1 2.3 led, which is under the action of a low pair 4.5. Both springs 4, 5 support the inner end of the one Bolt 2. Only the spring 4 rests against the corresponding end of the other bolt 3. Both bolts 2,3 are with their outer Ends with the mediation of a ball 6.7 against the two symmetrically to the center, arranged run-up curves 8a and end catches 8b provided inner surface of a type carrier designed as a ring 8. On its circumference, xacs ± two type sets are arranged one behind the other. In addition, the type carrier is ver with external teeth 8c see and acts as a planetary gear with internal teeth 9a one Serving as a sun gear, frame-fixed cylinder housing 9 together.

As can be seen in FIGS. 1 to 3, the drive shaft 1 is enclosed by a ring 10 which has a locking lug 10a. This can under the influence of the spring 5 in a corresponding detent 2a collapse in bolt 2. In addition, the ring 10 carries a stop 10b, which cooperates with an internal toothing 11a of a control segment 11.

• Outside the cylinder housing 9, parallel to its axis and the printing pad 12, which is designed as a roller, is mounted for the recording medium 13 at a suitable distance.

If the drive shaft 1 is set in rotation, then the bolts 2,3 taken along, which in turn by contacting the run-on curves 8a move the type carrier 8 concentrically. Included the stop 10b runs on the internal toothing 11a of the control segment 11 ineffective over.

In a position of the drive shaft 1, which one to select, the Type corresponds, the control segment 11 by a per se

anything

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any and therefore not shown element moved radially in the path of the stop 10b. This strikes against this collar associated tooth flank 11a and thereby takes the locking lug 10a out of its engagement with the bolt 2. This is free and under the action of the springs 4, 5 pushes the external toothing 8c of the type carrier 8 into the internal toothing 9a of the cylinder housing 9 « This starts a rolling movement of the type carrier 8 by rolling its external toothing 8c on the internal toothing 9a of the cylinder housing 9 until the set type of one type set has reached the printing point D on the printing roller 12. After the The corresponding pin ends run under pressure on the overrun cams 8a and into the end catches 8b. This means that now the bolts 2.3 under Overcoming the springs 4.5 are pushed back into a position, in which the locking lug 10a can fall back into its detent 2a. After a short further rotation of the drive shaft 1, the bolts reach 2,3 a position which is offset by 180 ° relative to the type carrier 8 so that the other type set is now ready for a new printing process.

The division of the carrier element selected in the exemplary embodiment in two bolts 2,3 offers the particular advantage of the compact design of the energy storage. In principle, however, you can also use a one-piece or on the circumference of the drive shaft several radially movable elements to accomplish the same task. A pressure medium can also serve as an energy store.

As the type carrier with relatively high speed rotates, care must be taken that the respective engagement of the planetary gear in the internal teeth of the housing is accurate and smooth he follows. For this purpose, the inventor proposes the arrangement of a brake, which in itself in any way in each case at the moment becomes effective, in which the coupling of the two gears must take place.

009851/1591 patent claims

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Claims (6)

Claims. High-speed printer working in the roller printing process for Data processing machines with a cycloidal movement of the type carrier compared to the printing material, which is controlled by a planetary gear is generated with internal circulation, characterized in that as an adjusting device for the planetary gear Serving type carrier (8) of each pressure stage a variable-length web (2,3) of the planetary gear is provided. 2. High-speed printer according to claim 1, characterized in that the variable-length web by one or more, in the Drive shaft (1) formed radially guided support elements (2.5) 3. High-speed printer according to claim 2, characterized in that that the two ends of the support element designed as a bolt (2, 3) through two oppositely directed energy stores (4,5) of different sizes are held in contact with the inner surface of the annular type carrier (8), with one bolt (2) the type carrier (8) under the action of a controllable locking element (10) within the transmission in a centric Location holds. 4. High-speed printer according to claim 3, characterized in that the drive shaft (1) as a locking member enclosing and against this spring-supported ring (10) serves, on the one hand, with one or more stops that interact with a control element (11) (10b) and on the other hand a locking lug (10a) for engagement in a hast (2a) provided on the bolt (2). 5. High-speed printer according to claim 2, 3 or 4, characterized by RAD G ¹ ^ 0 0 9 8 51/15 91 ^BAD by a contact surface (8a) as Eückstellorgan for each of the Type carrier (8) holding carrier element (2,3) 6. High-speed printer according to claim 3, 4 or 5, characterized in that that between the type carrier (8) and its carrier element (2,3) an end latch securing their mutual basic position (8b) is provided. Bo. (Dr. JooßJ patent attorney 009851/1591 empty soap