• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention can be used in hammer mechanisms of printing devices. The purpose of the invention is to reduce the power consumption of a printing device; The electromagnetic printing device contains a carrier 1, a paper shaft 2, an excitation coil 3 with a retractor 4, which is a printing hammer. The drive part of the core is provided with additional edges K, Kg, K.j, which create a magnetic seal, which makes it possible to carry out the required speed and force of impact of the printing hammer at minimal cost of electric power. The end part of the core, facing the print area, is installed with the possibility of removal by means of pins. On the way to move the core, installed-. a photoelectric sensing element 12, which supplies a signal to the control circuit of the printing device. The control tool includes a signaling organ associated with the sensing element, 12. 7 hp f-ly, 8 ill. W
    公开号:SU1284458A3
    申请号:SU823424248
    申请日:1982-04-23
    公开日:1987-01-15
    发明作者:Хайдер Ульрих
    申请人:Сименс Аг (Фирма)；
    IPC主号:
    专利说明:

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    The invention relates to office equipment and can be used in the infant mechanisms of printing devices.
    The aim of the invention is to reduce the energy intensity of the printing apparatus.
    Fig. 1 depicts a magnetic system with an inceptive cortex and a path versus force versus force diagram | in fig. 2 and 3 are magnetic systems with a core equipped with additional edges and diagrams related thereto; in fig. 4 - diagram of the dependence of the force and the path when braking the core; Fig, 5 - electromagnetic printing device, the cut; in fig. 6 is a block diagram of the control of the magnetic system of the printing apparatus; 7 - output pulses of a photovoltaic device; in fig. 8 is a diagram of the dependence of the force on the path in accordance with FIG. five.
    Electroma; a gnitny printing device contains a letter carrier 1, a support shaft 2, excitation coil 3 (E) with a pull-in coil 4 with guiding parts 5 and 6 which
    together with bushings 7 and 8, prevent the radial movement of the core 4 relative to the surface 9 of the frame J, made of magnetically soft iron, the spring 10 of the return of the core 4 to the initial position to the stop 11 and the photosensitive element 12.
    The control circuit (FIG. 6) contains two trigger stages 13 and 14 for temporarily controlling the circuit. The switching transistors 15, 16 and 17 connect the excitation coil 3, depending on the output signal of the amplifier 18, which regulates the excitation current when the braking current is printed to the coil 3, with a stable voltage source 19. An amplifier 18, connected as a current controller, is connected to the positive output
    a voltage divider of resistors 20-24 and a switching transistor 2 In this case, the resistor 20 is designed as a potentiometer. The switching transistor 25, controlled by the trigger stage 13, varies according to the required current in the coil 3
    The dividing unit of voltage divider is 20-24, which is connected with the source 26 of the reference voltage. Negative input of amplifier 18 is connected
    to measuring resistor 27 to determine the actual value in coil 3. Resistors 28-32 serve as D / 1H selection of switching transistors. The multistable trigger cascade 14 through the delay element 33 is connected to the output of the photosensitive element 12. The circuit is controlled by a pulse arriving at the input 34 from a keyboard (not shown). The trigger stages 13 and 14 are connected: via the OR element 35 to the control input of the switching transistor 17.
    The control circuit also comprises a control device 36 comprising a measuring element 37 connected to a pulse input 34 and a sensitive element 12, a memory element 38 and a comparator 39 of the control device. 40 comparison, the output of which is connected to the reverse input of the trigger stage 13.
    The time measurement element 37 is connected to an alarm function block 41, made in the form of a signal lamp. Measuring element 42 is required for the main installation of printing energy after the installation of an electromagnetic device with an intake device into the printing device.
    Electromagnetic device with retractor (Fig, 1) contains a fixed romo J, equipped with a central hole ZA, of a material with high magnetic permeability and measles AKj made in the form of a hammer of a printing device and in an idle state resting on the stop AS, the piston-shaped drive part of which Made of high magnetic permeability material. When the excitation coil is activated E, for example, from the AK control circuit, closing the air gap L, it moves straight through the central opening ZA in frame J. The nature of the change in the axial force of the spacecraft pushing the AK forward in response is shown in the diagram strength from the path. In this case, the zero coordinate indicates the position of the AK core on the stop AS.
    If under the influence of the magnetic field created by the excitation coil and propagated across the rom
    31
    1 h o r LK 11 e r e m m e i p. p l t; in (i (i) on the direction of the force of the spacecraft), then the force increases when the air gap closes, i.e. when the vertices SJ and SA rj J and core approach each other, to maximum Ml, and then decreases after the passage of the core through the central opening ZA The acceleration phase created by the power of the spacecraft is followed by the free movement of the core to obtain a printout, while the total kinetic energy of the core AK corresponds to the area F under the curve on the graph of the path versus time.
    If respectively FIG. 2, 3, and 5, change the shape of the rm and core, it is possible without additional amplification of the magnetic field from the excitation current in coil E to increase the area under the path versus time curve and thus the kinetic energy. In accordance with FIG. The 2 effective areas for the axial traction force of the KA core are the rear edge of the SJ rome J and the end SA of the AK core, made radially symmetrical. As a result, on the plot of force versus path (Fig. 2), a curve is obtained with three maxima that correspond to the moments of the closest approach of the SA vertices of the K1-K3 notches with the edge SJ of the J. The maximum of Ml corresponds to the notch K1, maximum M2 - notch K2 and maximum MZ - notch short-circuit.
    In the embodiment of the AK core (FIG. 3), there is an annular groove RN in the front portion of the drive component of the AK corona, and the resulting two vertices SA of the leading edge of the actuator AK and the annular groove RN create two maxima Ml and M2 in the force versus diagram of the way. This increase in the maxima of the axial force of the spacecraft by increasing the edges on the front of the core creates between the maxima Ml and M2 a constantly passing intermediate section ZB, which is divided into a descending section and a continuously ascending section SB. This mostly linear ascending section is used as a drag section of the core returning to the initial position after the imprint. The diagram depends
    r.nM (: ii sipy (II (flash)) shows only continuously upward stretch SB between two max mgm Ml and M2. At the same time, area F1 corresponds to the braking energy used relatively strongly damped; - e.g. corresponding to a braking impulse of a predetermined length, the area F2 is the braking energy relative to the undamped AK core, driven by the same braking impulse,
    In an electromagnetic device with a retractor in FIG. 5, a sensing element 12 is mounted in the form of a photovoltaic device. When returning from the printing position to the initial position, the rear part 6 of the AK box interrupts the photoelectric device at time T4. The photovoltaic device generates a braking impulse through the control circuit (Fig. 6), which becomes effective with a time lag Dt. The geometry of the AK box is consistent so that the braking impulse, i.e. the impulse in which the excitation coil E of the electromagnetic device with the recurrent cortex is activated again appears when the returning core AK with its drive part or sections effective for the axial traction force of the spacecraft is in the area SB of the path versus force diagram . This means that during the delay time At, the position of the beginning of the coil excitation point in the diagram of the dependence of the force on the path varies from point E1 to point E2, depending on the speed of the returning core. The duration of the reverse pulse t remains constant, thereby changing the braking energy from F1 to F2. This means that rapidly returning measles is necessarily slowed down faster than AK, which is damped by many units or returns slowly for other reasons. Therefore, it is much easier to control an electromagnetic device with an invisible cortex.
    The driving part of the core 4 is located centrally between the two guiding parts 5 and 6 and contains the cylindrical main part of the NT and the cylindrical pin ZT with a diameter of less than 51V8
    The 11 diameters of the ocucuuii part, the minimum hour, the NT and the ZT pin are made of a material with high magnetic permeability, for example magnetic iron, both of which have edge-shaped transitions that form parts of the UG magnetic seal. The guide part 5 consisting of a nonmagnetic material is rigidly mounted on the pin ZT. The guide part 5 at the same time serves as a printing hammer for actuating the soft wheel 1 and preferably made of hardened steel.
    To facilitate the adaptation of an electromagnetic device with a retractor to various conditions of application, a ZT pin with a thread can be made onto which guide part 5 is screwed. Thus, a variety of guide parts 5 of different lengths can be mounted on the pin. from a variety of material.
    Like the main part with a trunnion, bearing the coil 3 of the excitation of the Rmo J is made of a magnet of soft iron. In this case, the rmO has a central opening ZAj through which the guide part 5 of the box extends. The central hole ZA is made with edges in the section KN facing the drive part of the core in the out-of-position polo area of the magnetic field. An infrared photovoltaic device 12 is installed at the back of the electromagnetic device with a retractor, which serves to monitor the movement of the core.
    If the control circuit (FIG. 6) activates the excitation coil 3, the measles 4 moves. with closure: the effective air gap is essentially straight through the central hole ZA РМА J, The nature of the axial force of the spacecraft pushing 4 ahead, depending on the course of the XA core, is shown in the path vs. power diagram shown in FIG. 8. At the same time, the zero coordinate denotes the position of the core 4 on the stop 11. If under the influence of the excitation generated by the coil and the magnetic field passing through the rom magnetic field, the measles move to the left along the direction of s.p.kl, then the force increases firstly.
    86
    air gap L with 1 balancer UM edge UG papfr. ZT, then during the movement remains approximately constant in the area ZL and when the leading edge UG of the main part of the NT approaches the edge of the central hole ZA reaches its maximum (UNT sweep). After the drive, consisting of the main part and the trunnion, passes through the central hole ZA, the force decreases again (Fig. 7),
    The acceleration phase caused by the power of the spacecraft follows the free movement of the core to the imprint. In this case, the total kinetic energy of core 4 corresponds to the area F under the curve in the diagram of the dependence of force on the path.
    The character of the curve in the path versus force diagram can be changed by changing the ratio of the diameter of the ZT pin and the diameter of the main part of the NT. An increase in the pin causes an increase in the curve of force versus the path in its initial part (dashed line), and a decrease in the diameter of the pin ZT causes the curve to drop on its initial part (dash-dot line),
    It is advisable to make the ratio of the diameter of the trunnion to the diameter of the main part L.2. With such a ratio of the diameters of the trunnion and the main part, the constant nature of the force change over large distances during the passage of the trunnion is good for controlling the retractor and the main part through the central hole. The approximate dimensions of the core are the following, mm: diameter of the main part 5; the diameter of the pin 2-2,5; axle length 4. The material of the guide part is hardened non-magnetic steel. The drive material (pin, and the main part) is a soft iron magnet.
    The operation of the retractor device shown in FIG. 5 is explained with reference to FIG. 6 and the voltage vs. time diagram in FIG. 7, where the upper pulse train shows the nature of the excitation pulse at the output of the OR 35 element, the lower pulse train character pulse excitation output feel. This element 12.
    At time T1, the start-up pulse is applied also in:) oh 34, - lgusk
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    ) Rigger p1 cascade 13 and thus the OR 35 element is disconnected to control the transistors 17 and 25. As a result, the current regulator takes effect. The switching transistor 16 and the power transistor 15 become conductive, as a result of which the current in the excitation coil 3 increases abruptly to the maximum value set by the regulator.
    Under the influence of the created magnetic field, measles 4 receives acceleration. At the same time, the time measurement element 37 of the control device 36 of the core, for example, in the form of a counter, starts to work. At time T2, the photoelectric element opens and at the output of the sensitive element 12 a rectangular impulse is formed with a falling front j. A rectangular pulse stops the time measurement element 37 and the measurement result is transmitted to the comparison control device 40. The latter can be made in the form of a microprocessor and contains a storage device 38 with a corresponding central control device 39.
    The path traveled by the stop from the abutment to the photovoltaic device per unit of time determines the magnitude of the applied printing energy. If the transit time determined by the time measurement element 37 deviates from the predetermined time entered in the memory, then the central device 39 will return the trigger stage 13 at the time of the specification and the trigger stage 13 will be reset. Thus, the transistors 17 and 25 become conductive again, and the current controller is opened and the power transistor 15 is turned off. The control device 36 via the trigger stage 13 sets the timing of the control of the transistor 15 and thus the excitation current in the coil 3.
    After the returning cortex 4 returns from the printing position with its rear end 6, it again interrupts the photoelectric device of the sensing element 12 at time T4.
    Since this is a continuous and interrupted sensor element, and thus an upward
     "eight
    the front of the lower pulse series in FIG. 7, the delayed output signal of the element 12 for the time Ls in the time delay link activates the monostable trigger stage 14, which is installed with the rising edge of the pulse, which at time T5 opens the switching transistor 17 again through the element 35 and 35 most activates the coil 3. The switching transistor 25 due to the trigger stage 13 is in the conducting state, so that the amplifier 18 regulates the excitation current in the coil 3 to the braking current. In the remaining part of the path of the core 4 up to the stop 11, the measles 4 are completely braked by this braking current and can touch the stop 11 without additional hesitation. At time T6, the flip-flop cascade tilts to its original position, with the result that transistor 17 becomes conductive again and interrupts the current. excitation in the coil 3 through the power transistor 17. Repeated start pulse 34 can start the next printing cycle,.
    The functional signaling device 41 is associated with the time-lapse element 37 and generates an alarm signal when during a certain period of time after the start of the electromagnetic device with the retractor, the end of the cortex 4 does not pass through the photosensitive element 12. devices with entrainment. This can be, for example, a broken car or a defect of coil 3. Instead of T2-T1, you can use the time within T4-T2 of the entire printing cycle, i.e. twice interrupting the photosensitive element as a measure for a functional signaling device. The functional signaling device may contain a comparator, which compares the readings of the counter 37 with the calculated one and, if the latter exceeds, activates the signaling device.
    With the help of an electromagnetic device with an inceptive cortex, it is possible to simply make the basic setting of the printing energy after installing an electromagnetic device with an indentation cortex into the printing device.
    iv8
    For this purpose, the control circuit contains a potentiometer 20, which regulates the excitation current in the coil 3. In addition to the output of the sensing element 12, a measuring element 42 can be connected, which can consist, for example, of a time measuring device and an indicator device , which measures the time of passage of the core from the initial interruption of the photosensitive element to the interruption when the core returns to its original position. This transit time is a measure for the printing energy and with the main adjustment of the electromagnetic system with a retractable cortex after installation in the printing device, this time can be compared with a predetermined (calculated) time and by changing the position of the potentiometer 20 to make the main adjustment of the excitation current in the coil 3. Thereby, it is possible to smooth the tolerances arising during the manufacture and thereby caused by oscillations in the magnetic material and the current in the coil.
    权利要求:
    Claims (8)
    [1]
    1. Electromagnetic printers with retraction, containing a fixed rome with a central hole, made of a material with high magnetic permeability, mounted in the central hole of the frame excitation coil and placed in it with the possibility of longitudinal movement and closing the air gap measles, made in the form of shock a hammer with a piston-shaped drive part made of a material with high magnetic permeability, the stop is located on the side opposite to the print zone, and redstvo armature current control for controlling the excitation coil character, characterized in that, in order to reduce power consumption, the walls of the central openings of the yoke, facing the at
    5 0 5
    0
    0 5 0
    ten
    the aqueous portneiform part of the cramps, and the cut part of the core is supplied with fire and additional edges forming the areas of magnetic compaction.
    [2]
    2. A device according to Claim 1, characterized in that the additional edges of the drive part of the core are formed by an annular groove formed on this part,
    [3]
    3. A device according to Claim 1, characterized in that the end part of the core, facing the print zone, is mounted on its drive part with the possibility of removal by means of a pin.
    [4]
    4. The device according to claim 1, characterized in that the diameter of the trunnion refers to the diameter of the drive part of the core as 1: 2.
    [5]
    5. The device according to Claim 1, characterized in that the end part of the core facing the print zone is made of hardened steel.
    [6]
    6. The device according to claim 1, which means that the control means includes a sensitive element mounted on the path of movement of the core on the side of the abutment and on the distance from it.
    [7]
    7. The device according to claim 1, which means that the control device includes a time measurement element for reading the | Input signal of the sensitive element and the trigger signal of the device and a comparator connected to it, including the memory unit of the estimated transit time.
    [8]
    8. A device according to Claim 1, characterized in that the control means includes a signaling organ associated with the sensing element.
    Priority featured
    04.24.81 - according to claims 1, 2,5-8; 12/8/81 - Lo pp. 3 and 4.
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    同族专利:
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    AU521251B2|1977-09-14|1982-03-25|Exxon Research And Engineering Company|Hammer for impact printer|
    US4407193A|1980-06-16|1983-10-04|International Business Machines Corporation|Solenoid impact print hammer with uniform free flight time|DE3116430C2|1981-04-24|1983-03-31|Siemens AG, 1000 Berlin und 8000 München|Hammer pressure device with a plunger magnet system containing an optoelectronic sensor|
    DE3244936A1|1982-12-04|1984-06-07|Olympia Werke Ag, 2940 Wilhelmshaven|TYPE DISCOUNTING SYSTEM OF A WRITING OR SIMILAR MACHINE|
    DE3420450C2|1984-06-01|1989-10-26|Aeg Olympia Ag, 2940 Wilhelmshaven, De|
    US4538930A|1984-09-24|1985-09-03|Xerox Corporation|Adaptive print hammer damper|
    US4678355A|1985-07-02|1987-07-07|Xerox Corporation|Print tip contact sensor for quiet impact printer|
    US4743821A|1986-10-14|1988-05-10|International Business Machines Corporation|Pulse-width-modulating feedback control of electromagnetic actuators|
    JP2803258B2|1989-01-27|1998-09-24|セイコーエプソン株式会社|Drive circuit for wire dot print head|
    JPH05131386A|1991-11-06|1993-05-28|Rohm Co Ltd|Die handling collet lifting mechanism|
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    DE102005026415A1|2005-06-03|2006-12-07|Siemens Ag|Electromagnetic drive device|
    MX2018007949A|2016-01-19|2018-08-09|Fuller H B Co|One-part polyurethane adhesive composition, method of making a laminate, and laminate.|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE19813116402|DE3116402C2|1981-04-24|1981-04-24|Low rebound plunger magnet system|
    DE19813148503|DE3148503C2|1981-12-08|1981-12-08|Plunging armature magnet system with a composite armature with high propulsive force|
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