SU512938A1 - Device for controlling press operation - Google Patents

Description

one

The invention relates to the printing industry, in particular, to mechanisms for controlling installation and drive elements, for example, adjusting screws on an inking device and on a dosing humidifying device for printing machines.

A device for remotely adjusting the screw of the inking apparatus is known, in which the gears of the drive of the drive element associated with the adjusting screw of the inking apparatus are connected by means of controls; molded distortion magnets with drive Grämen, reversible and equipped with teeth.

A disadvantage of this device is the impossibility of carrying out the precise movement of the adjustment elements.

It is also known a device for controlling the operation of a printing press, comprising a stepper motor, a key element, an actuator, a switching unit and a control signal unit.

The purpose of the present invention is to improve the accuracy of the dosing of paint and the moistening liquid.

For this purpose, the device is equipped with a reversing valve, the control signal generation unit is made in the form of a multiplier signal; and the number of outputs of the reversing distributor corresponds to the number of actuators, the input of the control signal generation unit is not connected to the key element, and its output is through reversing distributor - with stepper motor.

FIG. Figure 1 shows the layout of the stepping motor when its axis is parallel to the axis of the mounting element (step-like movement and intermittent rotation); in fig. 2 shows the arrangement of a stepper motor when the motor and the alignment element are coaxially mounted; Fig. 3 is a schematic diagram of the direct arrangement of the stepper motor on the driven element; in fig. 4 is a diagram of the installation of the stepper motor on the ink dispenser device of the printing machine; in fig. 5 shows section A-A in FIG. four; in fig. 6 is a diagram of the arrangement of the stepper motor on the pressure control device of the printing terminal; in fig. 7 is a sectional view in FIG. 6; in fig. 8 is a diagram of the races of the step-by-step motors; page 9, adjustment of the cross section and circumference; in fig. 9 - electro aa circuit control 4 "by the stepper dvngatel boto; on flash 1O is a diagram for performing work in separate steps; in fig. llschema to implement a periodic continuous motion;) in FIG. 12 - scheme for the implementation of periodic, - continuous movement with a preliminary choice of the number of steps; in fig. 13 is a layout of elements for controlling several stepper motors on a metering (chamfering device; Fig. 14 is a price control panel of a Lemstage arrangement; Fig. 15 is a layout of an element for spacing an electrode position using the counter; FIG. 16 shows the position indicator of the engine of the engine by means of the coding disk, two projections. The device contains a stepping motor 1. The axis S of the stepping motor is parallel to the axis of the adjusting element (gears 3-5). 5, a multi-profile clutch 6 is located, the drive part of which serves as part of the installation element. Another part of the installation element is designed as a lead screw 7. When a stepper motor is mounted coaxially relative to the installation element, the electric motor is mounted inside the sleeve 8 with a thread located in the housing 9 machines, connected to the installation element. In this case, the sleeve is part of the mounting element. When the stepper motor 1 rotates, the adjusting element moves; it moves in a stepwise manner along the axis and at the same time accomplishes the spinning rotation. With such an arrangement, step-like displacements and / or intermittent rotational movement can be used to actuate the mounting elements. When the stepper motor is located on the driven element through a clutch, the motor is connected to the drive shaft 1O of the machine performing an intermittent motion, for example, with a feed roller of the humidifier or ductor roller of the inking unit. In this case, only intermittent rotational movement is used. FIG. Figures 4-8 show the possible positions of the stepping motors on the mounting elements typical of printing presses. The metering device 11 is rigidly installed in the housing and consisting of ductor roller 12, inking H0) (tal3, mounting elements and stop 14, serving ||, to limit the movement of the mounting element, by the number of mounting elements. Force adjustment Press the cylinder between the printing presses with the use of shchagovyh engines (Fig. 6 and 7). The printing cylinder 15 is installed stationary6, and the offset cylinder 16 is installed in the case with an eccentric bearing 17. Eccentric bearings have arms 18, the limitation of the path of movement of which is carried out by the movable stop 19. The mounting element limits the adjusting path of the cylinder 16 and the position of the mounting element determines the degree of pressing of the cylinders 15 and 16. The installation of the stepper motor relative to the mounting element corresponds to Fig. 1 The stationary schagovy engine mounted 1 is connected through a clutch and a pair of gear wheels 2O to the axis of the cylinder 21 mounted on the screw in the body of the machine. The rotational movement of the stepper motor is converted into an axial movement of the plate cylinder. The other stepping motor is connected by a clutch and a pair of gears 22 and 23 to a mounting shaft 24 passing through the forme cylinder. The shaft 24 with the screw 25 is installed; in the case of the machine. (26 is a drive gear, 27 is a prismatic key, 28 is a drive flange). Stepper motors mounted on the installation or drive elements, have a rotor and two stator. The first stator winding of the first step motor of the first printing press is designated M 1.1.1, and the second winding is marked M 1.1.2, etc. The step-like rotor is rotated by switching the direction of the movement of the bale in the stator windings. In order for the stepping motor to produce a step in the desired direction of rotation with each pulse of direct current, pulses are applied in the prescribed sequence and in the correct polarity to the two stator windings, i.e. the current direction of the previous step and the position of the rotor must be memorized. After four steps, the rotor has the same electrical position relative to the stator. However, the proposed device does not need to memorize the previous juara, since the electronic circuit 29 of controlling the operation of the stepping motor allows

step in step sequentially; one after the other as if one helps to use it to control any number of stepping motors. | Step D (< j4 steps (partial steps). | In (prc; partial step) directions The movements of the currents in the stator circuits correspond to the directions of current flow in the stator windings of the fourth partial step, i.e. the rotor occupies the same position relative to the stator. One of the j inputs of the circuit; iMjbi control 29 is the first input-i

schematic house (30 cuts to which

A circuit is connected OR OR 31 and ltel 32, the output of which is connected to the inhibit circuit 33. The output of the amplifier is 32, and ja the output of the inhibit circuit 33 - If. A delay 34 is connected to the amplifier; the amplifier 35 is connected to the amplifier. 35 is the amplifier and the output of the inhibit 36 is connected to the amplifier 35 the following delay circuits 37 I and the inhibitor circuit 38 are connected. one side, the second input of the coincidence circuit 30, and, on the other hand, i the first input of the coincidence circuit 39, the second input of which is connected to the circuit OR31. | Output circuit 39 G of the second input: circuit 31.

In the unexcited state, a signal flows through you; x6sy, Y2, and through the outputs q to y -O. In the circuit, the output of circuit 38 of the input of circuit 30 is a signal. If pulses of a certain duration are applied to the input of the control circuit, a signal passes through the output of the AOR circuit. Through circuit 31 and | amplifier 32, the signal passes to the output (/ y, and output j is inverted into .O, which corresponds to the first partial step, through the coincidence circuit 39 is sent to OR circuit 31. After the first delay, signal 1 is supplied to circuit 38. way on the input: the AOR circuit has signal O. Signal co, the AP circuit comes to Figure 39. Since the input of the amplifier 32 is still., various signals are applied to the circuit 39. The output from the circuit 39, the input of circuit 31 and the input amplifier 32 now conducts O, i.e., at output y, signal O, and output d is a signal that corresponds to (step 3).

After the first delay, the signal O passes through the output y and the output y, sig, nap 1 (step 4). After the second delay with the execution of the logical NOT operation, a signal passes through the second input of the circuit 30, i when impulse

| at the input of the electronic control scheme, it is | excited and the second step is performed. I To carry out the movement as separate steps to the control circuit 29

multivibrator 40 is connected with one steady state and {input element 41; manually actuated from, the impulse of a certain duration is produced, which feeds | s to the input of the circuit 29.

 For making a jienpepbiBitoro closer, for example, for the step drive of the duct roller of the dyeing device on the damper unit, to the circuit 29

The keys are the astable multivibrator 42 and the input element 41. This produces a pulse of a certain length, and a frequency (N pulse and, accordingly, the frequency of the inclusions is regulated.

To carry out periodic, continuous movement with a fixed number of steps, for example for simultaneous movement of all the adjusting screws of the inking device by a certain amount,

A regulated astable multivibrator 42 n coincident circuit 43 is connected to the circuit 29, the first input of which is the output circuit of the element 41, and the second output of the multivibrator 42 through a pulse-fed counting device 44 and the element 45 performing the logical operation NO. The work in this case is carried out as follows. In the quiescent state, the circuit connecting element 45 and circuit 43 conducts a pulse. If a pulse is applied to the first input of the coincidence circuit (element) 43, the multivibrator 42 excites the circuit 29. The counting device 44 counts the pulses

| and when the counter is full, it is set to Noah; the value of the value from it is fed to element 45, and then O enters the input: circuits 43, and the flow of control c1-T1s; to circuit 29 it is interrupted.

; FIG. Figure 13 shows the layout of the elements of the control circuit of several stepper motors mounted on the ink dispensing devices of multi-color printing machines. A paint metering device is connected to each printed second-day multi-color machine.

Each metering device has a paint; depending on the print format, it has a different number of adjustment wines: about 30 on average.

. In the control circuit 29 with the outputs g, ii H V Y g a switching device 46 is connected to change the direction of rotation of the stepping electric motors 1. In each of the switching positions

(rotation aa-right-ial) switch device connects the corresponding outputs with the corresponding outputs of the stator windings.

The current circuits of the connections of all stator windings are separated in such a way that all electric drives of the adjustable screws of the ne: Chastny altravs with their own printing -: vkgsh are connected to the corresponding partial pe to which they are also connected

search for the element to select the print section and the control element of choice for the printing section.

All the single-pin pins of the jtBHrative jog screws of the adjustment screws are connected to each other through the corresponding elements;

; The proposed device performs: the movement of a certain adjusting screw of the inking apparatus on one or i of several other printing sections with a preliminary Bbi6opoM number of penetrating; Dnm shchi ipi. without him; overheating. a certain group of adjusting screws of the dyeing apparatus or all adjusting screws on one or several printing units with a preselection of ipoM or without a choice of the number to be produced (steps.

The pulse counter 47 performs the pulse count in both the forward and the reverse directions. The number of pulses that can be counted by a counter serves as a measure that indicates {(| the position of the setting values). Indication of the setting elements allows the driver to use the aid of the coder disk 48 and the indicators 49 to “connect scraper electric motors

10 | automatic adjustment circuit.

Formula 3 o b riet

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A device for controlling the masonry belt, containing a stepper elec- tronic | gatellant, akkl amalt, an optih-full opriaH, a switching unit and a control signal generating unit, characterized in that. that, in order to increase the 20 {accuracy of paint dosing and wetting of a liquid, it is equipped with a reversing | distributor, the signal generation unit {control is made in the form of a softener {signals, and the number of outputs is reversible 3 (the distributor corresponds to the number of executive organs, The input of the control unit was controlled to the key element, and its output through the reversing distributor to the stepping motor.

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