JPH05261888A - Apparatus for transmitting electric energy and data - Google Patents

Abstract

PURPOSE: To enable a printer in operation to transmit data and electric energy from a mechanically fixed part to a rotatable part, by supplying electric energy without contact to a rectifier in rotatable disposition with a transmission transformer as well as supplying data without contact to a signal driver. CONSTITUTION: A control unit 2, having an indicating part for data value, is connected to a host control device 56 positioned at higher level in the printer. The control unit 2 transmits the data represented as a pulse 19 to a transmission transformer 3 through a line 20. The transmission transformer 3 transmits electric energy to a rectifier 4 in the direction of an arrow mark 23 without contact. The rectifier 4 converts alternating current to direct current. The transmission transformer 3 also supplies data pulse 19 to a signal driver 5 as shown with an arrow mark 24. The signal driver 5 is connected to a control device 7 through a data line 28. The control device 7 is connected to a motor driver 8 through a control line 29.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a machine component which is stationary in a printing press and is rotatable, for example for releasing and adjusting movement and tensioning of a printing plate which abuts the peripheral surface of a plate cylinder. A device for transmitting electrical energy and data, comprising a frame-fixed control unit, said control unit cooperating with a processing unit, said processing unit comprising at least one electrical load. For applying a voltage to, for example, at least one servo motor or, for example, a device for registering, the printing plate is fixed to a plurality of fixing bars arranged in a cylinder hole, The front fixing bar of the fixing bar can be separately adjusted and moved at both ends thereof, and the rear fixing bars are juxtaposed to each other, in which case the adjusting movement of the fixing bar is the peripheral surface of the plate cylinder. Direction has been made against the spring load toward the outside of the hole in, is provided with a sensor for further sensing the tightening state of the printing plate, an apparatus for transmitting electrical energy and data.

[0002]

2. Description of the Related Art A device according to the general concept of claim 1 is a DE3
It is described in Japanese Patent No. 633855C2. This device is used for releasing and adjusting movement and tensioning of the printing plate which abuts the peripheral surface of the plate cylinder of the printing press. This device is within the advantageous range of use of the invention.

In FIG. 5 of the above publication, a servomotor or adjusting member provided for such a purpose is connected to the central processing unit via an arrow. However, the specific configuration of this connection is not clear from this specification. There, data and energy can only be transmitted while the plate cylinder is stationary. However, this leads to drawbacks. This is because the machine must first be stopped for this. After the printing plate has been adjusted and moved, the machine has to be restarted, which naturally leads to wasted paper.

The conventional technique is DE3936446A.
Reference may also be made to JP-A-1. This publication describes an advantageous range of use according to the invention. In this publication, the printing plate is fixed to a plurality of fixed bars arranged in the plate hole. The front fixing bar of the plurality of fixing bars can be separately adjusted and moved at both ends thereof. The rear fixed bars are juxtaposed to each other. In this case, the adjusting movements of the plurality of fixing bars are carried out in the circumferential direction of the plate cylinder toward the outside of the holes against the spring load. A sensor is also provided there. This sensor detects the tightness of the printing plate. This specification suggests the following technical idea, that is, the technical idea of registering a rotating printing machine.
However, there is no mention there of electrical energy and data being transmitted from the machine frame to the plate cylinder.

[0005]

The object of the invention, which is therefore based on a device according to the preamble of claim 1, is that data and electrical energy can be rotated from a machine-fixed component even in a running printing press. It is to improve the device so that it can be transmitted to various components.

[0006] Advantageously also in registering applications, this should take place on the printing press in operation.

[0007]

According to the present invention, a mechanically fixed transmission transformer is provided for the transmission of electrical energy and data, the transmission transformer being supplied as an alternating voltage. The energy is contactlessly supplied to a rotatably arranged rectifier, and the transmission transformer is also arranged to contactlessly supply data supplied as data pulses to a rotatably arranged signal driver. Will be solved.

This configuration is characterized in that two separate transmission channels are provided. In particular, an in-channel transmission for data is performed first, and then an in-channel transmission for energy or for data and energy. The alternating voltage that supplies energy is rectified in the rotating part of the transmission transformer. This is because the subsequent components require a DC voltage. The data is also transmitted contactlessly via an alternating voltage (possibly a pulse), processed by the signal driver and then processed continuously.

An important feature of the invention is further characterized according to claim 2 as follows. That is, the transmission transformer is configured as a transformer with rotatable windings. In this configuration, the transmission transformer basically transmits an AC voltage for both energy and data, and the AC voltage or pulses are transmitted by the transformer in a contactless manner. For this purpose, the transformer need only be constructed in two parts, one fixed and the other rotating. D for this complex feature
Reference may be made to E3839771A1 as prior art. In this publication, a transformer having a rotationally symmetrical structure has already been schematically described. However, this principle is also known per se (although there is no suggestion that the transformer may be constructed in two parts, one rotating and the other fixed).

It is possible to transmit data and electrical energy in accordance with the principles of claims 3 and 4 by means of a transformer consisting of the two components. Claims 3 and 4 describe advantageous embodiments for transmission.

Claims 6 to 10 describe advantageous embodiments of the circuit in the rotary part.

A control device according to a sixth aspect of the present invention couples data to each other and further stores these data. This controller controls the individual components.

The channel selection device as claimed in claim 7 is required when using a plurality of servomotors, optionally also one or more sensors (Rosecell, Druckdose).

An actual value driver having a position alarm according to claims 8 and 9 notifies the controller of the position of the servo motor.

Advantageously, the actual position can be displayed on the display of the rotating part according to claim 10 and / or on a mechanically fixed control unit. To that extent, a feedback branch of the data from the rotating part to the machine fixed part is provided.

[0016]

DETAILED DESCRIPTION A control unit 2 is provided. This control unit 2 optionally has a display for the data values and is a host controller 5 which is arranged higher in the printing press.
Connect with 6. The control unit 2 transmits the data indicated by the pulse 19 to the transmission transformer 3 via the line 20.

The control unit 2 is further provided with an AC voltage code 21.
The electric energy indicated by is transmitted to the transmission transformer 3 via the line 18.

The components of the control unit 2 and the transmission transformer 3
The fixing part is provided in the machine-fixed area (17) of the printing press.

The other components are fixed to a rotatable machine component (advantageously the plate cylinder). This rotatable area is shown at 16. The two areas are separated from each other by a symbolic separation line 22 in FIG.

The transmission transformer 3 transfers the electrical energy (output) in the direction of arrow 23 to the rectifier 4 in a contactless manner (this will be explained in more detail below on the basis of the other figures). This rectifier 4 converts an alternating current into a direct current. The transmission transformer 3 also supplies the data pulse 19 to the signal driver 5, as indicated by the arrow 24. This signal driver 5 is shown as a serial connector. This signal driver 5 will also be described in more detail below with reference to other figures.

A DC voltage 25 is supplied to the motor driver 8 on the output side of the connector 4. Controller 7 with memory
Is supplied with a DC voltage 26 from the rectifier 4. In addition, the control device 7 receives the reference voltage 27 from the rectifier 4.

The signal driver 5 is connected to the control device 7 via a data line 28. The control unit 7 has a display unit 6
Is also connected.

The control device 7 is connected to a motor driver 8 via a control line 29, and the motor driver 8 is connected to a channel selection device (channel driver) 10 via another line 30. The actual value driver 9 is connected to the channel selection device 10 via a line 31. This actual value driver 9 is also connected to the control device 7 via a line 32.

In the illustrated embodiment, the channel selection device 1
A sensor (rose cell) 11, a plurality of servomotors 12 to 15 and position indicators 51 to 54 thereof are connected to 0.

On the input side, the transmission transformer 3 is supplied with, for example, clock-controlled power. The rectifier 4 produces a DC voltage at its output. That is, 5V on the line 26
And a DC voltage of 24 V is generated on the line 25.

The control unit 7 controls the function sequence.
For this purpose, data is introduced into the control device 7 via the signal driver 5. The signal derived therefrom reaches the motor driver 8 via the line 29, and the motor driver 8
Is supplied to the channel selection device 10. Motor 12-
A DC voltage is supplied to 15 through lines 23 and 30. The actual value, that is, the position where the motor has started to move and the actual state of the sensor 11 are supplied to the channel selector 10.

In the case of successive inquiries from the control device 7, the actual value supplied to the channel selection device 10 is supplied to the actual value driver 9 via the line 31 and the line 32.
Is evaluated from the control device 7 via This actual value then reaches the display 6 for display or the track 2
The machine-fixed control unit 2 is also reached via 8, 24, 19 for display. For this purpose, the control unit 7 controls the channel selection unit 10 by means of the signal 55 and inquires about the actual values resulting from 11 and 51-54 accordingly.

FIG. 2 shows a structurally advantageous embodiment of a two-component transformer. It is clear from this figure that the (fixed) core has a rotational symmetry
That is, the pot-shaped member has the shaft-shaped protruding portion 42. In the annular space formed by it, the primary winding 3
3,34 intervening and further rotatable secondary winding 3
5 intervenes in the air gap between the primary windings 33 and 34. Position 43 shows a magnetic flux line, which extends in the air gap.

The rotating secondary winding 35 is fixed to a plate 44, the axis of rotation of which is shown at 45 (data transmission channel 24 not shown in FIG. 4).

FIG. 3 is a schematic diagram of the circuit of the two component transformer used herein. The fixed part of the transformer is shown to the left of the separation line 22, and the rotatable part of the transformer is shown to the right of the separation line 22. The fixed part has two primary windings 33, 34, which are at least the secondary winding 3 of the rotating part.
Inductively bound to 5.

FIG. 3 additionally shows the control unit 36 and the load 37 for the transformer. This control unit has a transmitter, a controller, a controller,
It has a driver, a protection circuit and an oscillator for the time window (data trigger).

Data are supplied to the control unit 36 from the control unit 2 via the line 19. This data is correspondingly transmitted as shown in FIG.

FIG. 4 shows the signal received by the secondary winding 35. From this figure it can be seen that electrical energy is being transferred over the pulse 39 (shown here by the triangle). There is one window between each of these pulses. No energy is transmitted in this window. The data transmission 24 by the data pulse 40 is set in this window. This is the control unit 36
Controlled by.

The data is transferred to the signal driver 5 via the data channel 24. The signal drivers 5 are respectively opened only when the pulse is blank, for example. The energy pulse 39 is rectified and the DC voltage obtained thereby is supplied to the load 37.

FIG. 6 is intended to explain a transmission using the device according to FIG. It is clear from this figure that the amplitude-modulated signal 50 is transmitted and the low-frequency component of this signal produces the output 23 (sinusoidal part of the characteristic curve 50). The low frequency component 57 of this signal carries the data 24.

The signal 50 can be frequency-modulated or phase-modulated.

Thereby, the auxiliary energy and the control signal are
It is clear that the transmission is to a rotating plate cylinder via a transformer consisting of three components. The transformer is wear-free and maintenance-free, and also transmits auxiliary energy and control data contactlessly to the adjusting and moving unit in the plate cylinder of the printing press. Due to the contactless transmission, a significant reduction of the control signal is achieved. This allows a safe transmission of control signals. This also allows accurate and reproducible alignment.

That is, the control unit 2 exchanges control data with the control device 7 via the transmission transformer 3 and the signal driver 5. This allows the plurality of motors 12-15 (possibly only one of these motors being provided) to be connected to the motor driver 8 and the channel selector 10.
Aligned via. The motor alignment data is evaluated by the controller 7 via the actual value driver 9. The tensioning process is recorded by the bellows 11 and fed to the control device 7 via the channel selection device 10 and the actual value driver 9. The alignment data is excited and displayed by the control device 7 via the display unit 6.

The energy required for voltage supply (current supply) to the electric load 37 in the rotating portion 16 is the transmission transformer 3.
Is transmitted by the power supply unit 4, processed by the power supply unit 4, and supplied to the electrical components 5 to 11, the motors 12 to 15, and the position alarms 51 to 54.

[0040]

According to the present invention, data and electric energy can be transmitted from a mechanically fixed component to a rotatable component even in a printing press in operation.

[Brief description of drawings]

1 is a block circuit diagram of the key components of a device according to the invention.

FIG. 2 is a basic principle diagram of a transformer consisting of two components.

FIG. 3 is a circuit diagram of a two-component transformer with a secondary winding used as a first embodiment of a transmission transformer.

FIG. 4 is a diagram showing current intensity over time.

5 is a principle diagram for explaining transmission of energy and data in a single channel by using the transformer (second embodiment) according to FIG. 2;

FIG. 6 is a diagram showing a frequency-modulated voltage over a time axis.

[Explanation of symbols]

 2 Control unit 3 Transmission transformer 4 Rectifier 5 Signal driver 6 Display 7 Control device 8 Motor driver 9 Actual value driver 10 Channel selection device 11 Sensor 12 Servo motor 13 Servo motor 14 Servo motor 15 Servo motor 16 Area (rotatable) 17 Area (machine fixed) 18 lines 19 pulses 20 lines 21 reference 22 lines 23 arrows 24 arrows 25 lines (DC voltage) 26 lines (DC voltage) 27 lines (reference voltage) 28 lines (data line) 29 lines 30 lines 31 lines 32 Line 33 Winding 34 Winding 35 Winding 36 Control unit 37 Load 39 Pulse 40 Data pulse 41 Core 42 Projection 43 Magnetic flux line 44 Plate 45 Rotating shaft 46 Winding 47 Winding 50 Signal 51 Position indicator 52 Position indicator 53 Position alarm 54 position Knowledge 55 lines (signal lines) 56 control device 57 components

Claims (11)

[Claims] 1. A stationary machine component (1) in a printing press.
A device for transmitting electrical energy and data from 7) to a rotatable mechanical component (16) for releasing and adjusting movement and tensioning of a printing plate, for example abutting the peripheral surface of a plate cylinder, It has a frame-fixed control unit, which cooperates with a processing unit, which processing unit comprises at least one electrical load, for example at least one servomotor (12-15) or, for example, A voltage is applied to a device for registering, the printing plate is fixed to a plurality of fixing bars arranged in the cylinder hole, and the front part of the plurality of fixing bars is fixed. The bars are separately adjustable at their ends, and the rear fixed bars are juxtaposed to one another, in which case the adjusted movement of the fixed bars is spring-loaded towards the outside of the holes in the circumferential direction of the plate cylinder. In a device for transmitting electrical energy and data, which is provided with a sensor (11) for sensing the tightening state of the printing plate, A mechanically fixed transmission transformer (3) is provided, which supplies the electrical energy supplied as an alternating voltage to the rotatably arranged rectifier (4) in a contactless manner, Furthermore, the transmission transformer (3) transmits electric energy and data, which is also characterized in that it also supplies data supplied as data pulses in a contactless manner to a rotatably arranged signal driver (5). Equipment for. 2. The transmission transformer (3) is constructed as a mechanically fixed part of a two-component transformer, the other part of the two-component transformer being rotatable. Wherein the two parts have primary or secondary windings (33, 34, 35; 46, 47) of the transformer inductively coupled to one another. The apparatus according to item 1. 3. The energy transmission is performed by a plurality of pulses, and there is a dead time between the plurality of pulses, and data transmission (pulse 4) is performed in the idle time.
0) is performed. 4. A primary winding (46) and a secondary winding (47) are provided in the transformer for the energy transmission and the data transmission, respectively, the primary winding (46) and the secondary winding (47). Line (47) carries a modulated alternating voltage,
The device according to claim 2. 5. Device according to claim 1, wherein the rectifier (4) and the signal driver (5) are connected to a control device (7) with a memory. 6. The control device (7) is connected to at least one motor driver (8) having a channel selection device (10), said channel selection device (10).
6. Device according to claim 5, to which one or more servomotors (12-15) or sensors (11) are connected. 7. A position alarm (51-54) is connected to each of the motors (12-15).
The described device. 8. At least one actual value driver (9) is connected to the channel selection device (10),
Device according to claim 6 or 7, wherein the actual value driver (9) is connected to a control device (7). 9. The device according to claim 5, wherein a display unit (6) is connected to the control device (7) and / or the control unit (2). 10. The controller (7) and the channel selector (10) are directly connected to each other (signal line 5).
5) The device according to any one of claims 1 to 9. 11. The device according to claim 1, wherein the control unit (2) is connected to a control device (56) of a printing press.