JPH04503191A - Improved solenoid impact imprinter drive control method and device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] name of invention Improved solenoid impact imprinter drive control method and device Background of the invention The invention is commonly used to imprint information on common credit cards. An improved solenoid type impact imprinter drive control method and its device related.

Automatic marking systems have gained wide acceptance in this field. Two such scenarios The stem is (1) U.S. Patent No. Re 27,809 (inventor Nitrilic (Drillick)), U.S. Patent No. 3.820.454 (Inventor: Hen Henckley et al. and (2) U.S. Patent No. 3.820. ．． No. 455.

The method, apparatus, and improved solenoid structure are provided herein as a reference. (Application No. 204.499) builds on the invention disclosed in .

The Warwick application discloses a solenoid system, which system , the solenoid coil is activated in two stages, namely the first and second current pulses. Then, voltage is applied. Warwick specification, as in the present invention. the first pulse brings the printing element into contact with the material to be imprinted, or , the second pulse is used to imprint the selected material. used. Because when that embossing current pulse is applied, the pre- The print element is already in contact with or in close proximity to the material to be stamped, so The loud impact noise of the contact element striking the material is eliminated. The bossing operation is performed with almost no noise. Using the two-pulse method, Additionally, it also reduces the speed of moving parts which helps to reduce noise.

In addition to these noise issues, solenoid-driven embossing systems Generally speaking, there are problems with solenoid part assemblies, namely: (1) Solenoid part assembly. Solenoids due to eddy current losses in the materials used to construct the assembly suppressing overheating of the structure; and (2) durability of the solenoid embossing structure. and are faced with improving accuracy. In the conventional technology, the solenoid part assembly Magnetic materials such as steel have been used for this purpose.

In addition to other novel and patentable properties, the method, apparatus, and improved sole The noid structure also improves the two-pulse method of applying voltage to the solenoid. . The present invention also provides an improved solenoid system and This improves the durability and accuracy of the shing system and reduces eddy current losses.

Second anus! leopard Accordingly, the present invention provides a printing element used for imprinting selected materials. Provides a device for controlling impact imprinting systems including impact imprinting systems. provide This device is a software that drives print elements in response to current pulses. Contains a lenoid structure. Electrically, the current pulse generation circuit has a solenoid structure and are internally coupled to generate and transmit first and second current pulses to the solenoid structure. I can do it. The first current pulse has a contact time and contact time sufficient to operate the solenoid structure. has a tactile amplitude and moves the print element into a position close to the selected material. make it move. The second current pulse is of sufficient magnitude to operate the solenoid structure. has the imprint pulse amplitude and imprint pulse amplitude selected by the print element. engraved material with arbitrary character height. The current monitor circuit generates current pulses electrically. is internally coupled to the circuit and senses the amplitudes of the first and second current pulses; and transmitting first and second current amplitude sensing signals representative of the amplitudes of the second current pulses, respectively. . Electrically, the current pulse control circuit has a current pulse generation circuit, a current monitor circuit, and an internal The current pulse is generated between the pulse generation state and the non-pulse generation state. Switch the circuit. The current pulse control circuit has a first signal control. this corresponds the first current amplitude detection signal received from the current monitor circuit to the contact pulse amplitude. and a corresponding first predetermined amplitude value, and when the first predetermined amplitude value is detected, After the first predetermined time period corresponding to the contact pulse time has elapsed, the current pulse generation circuit generates a pulse. switch to a non-occurring state. The current pulse control circuit further performs second signal control. have. This is the second current amplitude detection signal received from the current monitor circuit; and a second predetermined amplitude value corresponding to the imprint pulse amplitude, and When the amplitude value is detected, the current pulse generation circuit is set to correspond to the imprint pulse time. After a second predetermined period of time has elapsed, the state is switched to a non-pulse generation state.

In another embodiment of the above-described apparatus, the apparatus further selectively includes the following three signals: It has a three-state operating structure that generates a signal. In other words, the amplitude increases rapidly over time. A first current signal whose amplitude increases and a second current signal whose amplitude gradually decreases over time. and a third current signal whose amplitude decreases rapidly over time. this The three-state structure is used to generate a current signal that is essentially constant with respect to time. i.e., the first current signal and the second current signal are substantially equal to each other over time. The signal is generated alternately at a period such that the amplitude of the signal is steady.

In yet another embodiment of the apparatus, the control means is configured to detect the first and second current amplitudes. processing the information signal and detecting the plunger, shaft, horseshoe, and print element. and processing means for providing velocity and position information.

The present invention also provides seeds for use in impact imprinting systems. A novel method for generating current pulses through solenoid coils of the same type is provided. Book Under the method, a first current signal whose amplitude increases rapidly with time is first added. While applying the first current signal, the current amplitude of the solenoid coil is A sensed current is sensed to obtain a current amplitude signal. that sensed current amplitude signal is compared with a predetermined amplitude value to determine the time at which the predetermined amplitude value was obtained. prescribed After the amplitude value is obtained, a second current signal whose amplitude gradually decreases over time is applied for a fixed period of time. Finally, there is a third voltage whose amplitude decreases rapidly over time. A current signal is applied until the current amplitude is substantially zero. Preferred embodiment Below, the method described is used to generate a first current pulse, which As a result, the print element is moved to a position close to the item to be engraved.

However, the first current pulse is not suitable for the preferred embodiment generating the second current pulse. It can also occur under other methods used in .

Under this method, a first current signal whose amplitude increases rapidly with time is applied be done. While applying the first current signal, the current amplitude of the solenoid coil is is sensed to obtain a known current amplitude signal. The sensed current amplitude signal is , and a predetermined amplitude value to determine the time at which the predetermined amplitude value was obtained. prescribed swing After the width value is obtained, the amplitude of the first current signal gradually decreases over time. The second current signal alternately has a substantially constant current amplitude (which corresponds to said predetermined amplitude value). (equal to Finally, time and A third current signal that both rapidly decreases in amplitude becomes substantially zero in current amplitude. is applied up to.

Reduces eddy current losses and increases the durability and accuracy of imprinting systems To address this issue, the present invention further provides an improved solenoid device. the device includes the plunger, housing, solenoid coil, shaft, and printed element. Also referred to as a hammer, located at the end of a shaft to engage the Contains horseshoes. The housing has an open extension through which the shaft can be inserted. Mount the foot so that it can slide. The accommodation section also has a guide structure. , the plunger is slidably aligned across the plunger opening of the housing.

The solenoid coil is protected within the housing and the center of the solenoid is covered. It is. The shaft is attached to the plunger and the shaft is connected to the solenoid. It extends through the cavity of the coil. The horseshoe is attached to the shaft and the current is applied through the solenoid coil, the resulting induced magnetic force The plunger, shaft, and horseshoe are formed in the solid cavity of the moved in the direction along the axis.

The housing means has a first stack of laminations, and within the first stack The laminations of are tied to adjacent laminations. its containment The section further includes a second stack of laminations, and a lamination in the second stack. Laminations are tied to adjacent laminations. middle block a stack is tied between the first and second stacks.

The present invention also provides a new method of assembling a solenoid housing. That person The method is to stack the first lamination, to stack the laminates within the first stack. tying the first stack together so that the stack is arranged and held; Stacking the laminations, the laminations in the second stack are aligned tying the second stack together so that the first and second stacks are held together; tying the central block between the stacks.

Alternative methods for assembling the solenoid housing may also be used. This alternative method involves stacking the first lamination and stacking the second lamination. Stacking the terminations, placing the central block between the first and second stacks Stacking and adhesive to the first and second stack, central block at the same time to maintain the orderly alignment of the first and second stacks and center block. It has a process of

These and various other advantages and features of novelty which characterize the invention are hereby annexed. The above advantages and features are hereby pointed out together with the features of the appended claims. It forms part of the However, the present invention, its advantages and its Drawings forming part of the invention for a better understanding of the purpose to be obtained by its use and the explanatory text accompanying the drawing should be prepared as a reference and This describes a preferred embodiment of the invention.

Section Ω Goa Emperor Niho FIG. 1 is a diagram illustrating a software used in an imprinting apparatus according to the principles of the present invention. Shows the main elements of an embodiment of a solenoid control circuit used to drive a lenoid. FIG.

Figure 2 shows the main elements of the solenoid control circuit shown in Figure 1 and the main elements of the solenoid control circuit shown in Figure 1. FIG. 2 is a detailed block diagram showing the main elements of current pulse control further broken down.

Figure 3 shows the current of Figure 1 with current pulse control and solenoid interface. FIG. 2 is an electrical block diagram showing a pulse generation circuit and a current monitor.

FIG. 4 is a timing chart showing the operation of the solenoid control circuit.

Figure 5 shows how to drive a two-solenoid impact imprinting printer. FIG. 2 is a block diagram showing an embodiment of a solenoid control circuit used for the purpose of the present invention.

FIG. 6 is a block diagram showing the current pulse generation circuit of the solenoid control circuit shown in FIG. It is a lock diagram.

Figure 7 shows the actual solenoid structure used to drive an impact printer. It is a top view showing the main elements of an example.

FIG. 8 is an exploded view of the solenoid structure shown in FIG. 7.

9 shows the main immovable elements of the embodiment of the solenoid structure shown in FIG. It is a front view.

FIG. 1O is a bottom view of the solenoid structure shown in FIG. 9.

FIG. 11 is a top view of another embodiment of the solenoid structure.

FIG. 12 is a top view of yet another embodiment of the solenoid structure.

゛　t　t A. Soleno donba blinddon The block diagrams in FIGS. 1 and 2 show a solenoid that operates by operating the solenoid 56. The main elements of the control circuit 28 are shown. The control circuit 28 is a current pulse control If it is specified that lO1 is present, the solenoid coil 55 is activated for each command from the main control 11. Under the zero-wire method, which does this by controlling the current that The controller 10 transmits control signals Q1 and Q2 as shown in FIG.

In response to the control signals Ql and Q2, the current pulse generating circuit 40 applies current to the solenoid. The coil 55 receives the first and second current pulse shapes as shown in FIG. Apply with. The first current pulse 4 is applied to the printing element 64a (see FIG. 7). , 64a is generally known as a punch, and 64b is generally known as a gui; 2 In solenoid type impact imprinting printers, the print element contact 64b operates in a similar manner to 64a) in contact with the material on which the imprint is to be made. It is intended to be moved to touch. The second pulse 5 is the solenoid It is intended to provide an embossing force to the coil 55. 300V DC Power supply 30 supplies power to current pulse generation circuit 40 . All DC power is A It comes from the C-line power source either directly or through a converter and is rectified to the capacitor. It is stored in the shita. The current monitor 48 monitors the current amplitude in the solenoid coil 55. is detected, and the detected amplitude signal 21 is controlled by the current pulse control 10. It is transmitted to the width control 20. The current pulse control 10 uses the detected amplitude signal 21. to control the amplitude and timing of the first and second current pulses 4.5.

FIG. 2 shows the current pulse control lO in more detail. The main control 11 and parameter information regarding the second current pulse 4.5. This parameter is , contact and imprint amplitude 11, amplitude information corresponding to I2 (see FIG. 4) and , contact and imprint time T1. Time information corresponding to T2 (see Figure 4) Contains. The main control 11 includes a solenoid reset 13 and a solenoid clock. 14 and solenoid control 15 signals. The switching control 18 Decode the three signals and transmit the following outputs: (1) Touch to amplitude control 20; and imprint amplitude signal II% I2; and (2) to current pulse generation circuit 40 control signals Q1 and Q2 as shown in FIG. The switching control 18 is Also, the solenoid status signal 16 is transmitted to the main control 11, and the solenoid status signal 16 is transmitted to the main control 11. Informs that the lenoid coil 55 is electrically operating, and also monitors the power line. A timing control signal 19 is transmitted to the controller 17 .

As part of generating the first current pulse 4, the amplitude control 20 receives an input signal 11. Then, determine the contact amplitude ■1 and apply it to the detected amplitude signal from the current monitor 48. Compare with 21. As part of generating the second current pulse 5, the amplitude control 20 is The force signal I2 is received, the contact amplitude I2 is determined, and this is detected from the current monitor 48. The amplitude signal 21 is compared with the known amplitude signal 21. The amplitude control 20 has If and I2 as limits. When reached, a current limit signal 23 is transmitted to the switching control. The amplitude control section also , whether the current pulse generation circuit 40 is outputting an excessive current compared to normal operation. Determine whether When the current output is too large, the amplitude control 20 switches the switching control 18 An overcurrent signal 22 is transmitted to.

The switching control 18 decodes all input signals from the main control 11 and converts them into current pulses. The generator circuit 40 is programmed with the correct control in the correct time sequence (as shown in Figure 4). control signals Q1 and Q2. In response, the current pulse generating circuit 40 As shown in the figure.

A first and a second current pulse 4.5 are generated. The switching control 18 also includes the main control Transmit the solenoid status signal 16 to 11 to confirm that the solenoid is operating correctly. Tell them that you are there.

The switching control 18 includes a solenoid reset 13, a solenoid clock 14, and , receives signals for the solenoid control 15 from the main control 1111. solenoid reset Step 13 starts the cycle (as shown in FIG. 4) and starts the cycle (as shown in FIG. 2). The switching control circuit 18 is made operable. The solenoid clock 14 count up to the correct level, which is the counter, and then Determine the first and second current pulses. The If and I2 signals to the amplitude control 20 are The direct output of the counter determines the level that amplitude control 20 decodes.

The counting procedure is done immediately before the first and second current pulses 4.5 act. Thus, for the second current pulse 5, the counting procedure is performed during the rest time 6.

Solenoid control 15 initiates a solenoid cycle. solenoid control signal Ql and Q2 in either the first or second pulse 4.5 in response to The control signal is in the high state - full power current signal state 1 as shown in Figure 4. Become. When the current limit is reached, the switching control 18 switches from the amplitude control 20 to the current limit. Receive signal 23. The solenoid status signal 16 goes low and the main In response to informing the control 11 that the current limit has been reached, the control signal Q2 becomes low state - current signal gradually decreasing state 2.

For the first pulse 4, the current taper state 2 is engaged for the contact time T1 (Ql ON, Q2 is 0FF), at the second pulse 5, the current gradually decreasing state is detected by the counter. is counted for approximately 1 m5ec, after which the control signals Q1 and Q2 are switched to the appropriate voltage Full power current signal state 1 (Ql ON, Q2 ON) until current limit is reached again Return to

By repeating the ON and OFF of Q2, this can be set to the attack mode or Power ON10 FF referred to as changeover switch mode to switch FF However, the steady-state current amplitude is essentially maintained, which is the imprint current amplitude ■ becomes equal to 2. The current to the solenoid coil 55 is similarly applied to the first or second solenoid coil. At pulse 4.5 it is disconnected by the solenoid control signal 15; control signal When Q15 goes low, both Ql and Q2 go low and the current suddenly Falling state 3 begins.

The solenoid status signal 16 differs from the first pulse 4 to the second pulse 5 How to stop the action. The first pulse 4 receives a reset signal 13 from the main control 11. After receiving the signal, set the solenoid status signal to high state. The second pulse 5 is After receiving the solenoid clock signal 14 from the main control 11, the solenoid status signal is Set the signal to high. If something goes wrong during that cycle, the solenoid Idostatus signal 16 does not go high, but remains low. The logic In lock control, solenoid status signal 1 causes an immediate shutdown. There are two circuits where 6 indicates a fault and stays high. Inside the counter There is a watchdog timer; if the solenoid is If it stays for more than loomsec in dynamic mode, then a fault signal will be emitted. and all switches are disconnected. Also, the overcurrent signal from the amplitude side @20 is low. If the condition occurs, the same failure mode will occur.

The power supply line monitor 17 is used to monitor the status of the DC power supply 30. It will be done. The purpose is to ensure that the power supply reaches a sufficient level for the main control N]11 as soon as possible. The purpose is to warn you that the connection is not connected or disconnected. little (tomo) This objective is achieved in two ways: (1) Monitoring the DC power level or (2) by monitoring the AC line. When does it cross the zero value or is it cut off? This is done by determining whether Insufficient power or disconnected When this happens, the power line monitor signal 27 to the main control 11 goes high.

A detailed circuit diagram of the current pulse control lO transmitting the control signals Q1 and Q2 is known in the art. To make this circuit, which is not shown because it is within the technical scope of a peer, There are a variety of methods, including discrete logic, microprocessors, etc. .

Figure 3 also shows the current pulse control 10 and solenoid coil 55 and interface. An electrical block diagram of a current pulse generating circuit 40 and a current monitor 48 is shown. are doing. The current pulse generating circuit in a preferred embodiment includes an upper transistor 4 1. Lower transistor 42, first diode 43, and second diode 44 have. Current monitor 48 in the preferred embodiment is electrically connected to the lower trunk. It includes a sense resistor 49 coupled to the emitter of register 42. 300V The DC power source supplies power to the current pulse generation circuit 40. upper shown and lower transistors 41 and 42 currently have collector, base, and emitter. are of bipolar technology using transistors with transistor coupling; Field effect transistor consisting of corresponding drain, gate and source coupling (FETs).

The current pulse generating circuit 40 receives control signals Q1 and Q2 from the current pulse generator @10. Receive. Figure 4 shows the sequence of control signals Q1 and Q2 and the resulting voltage. The behavior of the coil current monitored by the current monitor 48 is shown.

At the beginning of the sequence, the upper and lower transistors 41, 42 Both are off, with no current flowing through solenoid coil 55.

To start the first pulse 4, the upper and lower transistors 41, 42 are Both are turned on and shaken for a period of time as shown in Figure 4. Generates a full power current signal l whose width increases rapidly. Its full power current state During this period, current flows from the DC power supply 30 to the upper transistor 41 and the solenoid coil 55. , the lower transistor 42, and finally the sense register 49 of the current monitor 48. flows through.

The current monitor 48 sends the sensed amplitude signal 21 to the current pulse control 10, which is more specific. Then, it is transmitted to the amplitude control 20. The detected amplitude signal is the contact amplitude 11 or i When the print amplitude is equal to I2, the amplitude control is performed by switching the current limit signal 22. 18, and then turns off the lower transistor 42. Current pulse generation circuit 40 is in the current gradually decreasing state 2 as shown in FIG. (The lower transistor 41 is ON and the lower transistor 42 is OFF). At this point, the solenoid The current flows through the second diode 44, the DC power supply 30, the upper transistor 41, and and begins to flow through the solenoid coil 55. This current flows through the solenoid coil 55 and the current is slowly applied for a contact time T1. cause it to weaken. During the current gradual decrease state 2, the solenoid coil current increases during the contact time T1 During this period, it is maintained substantially constant. Current pulse control is a changeover switch mode. The circuit also maintains the current amplitude substantially constant during the first pulse 4 so that it remains connected. It can be programmed to be used to be equal to the tactile current amplitude It. Please be careful.

At the end of the contact time T1, the upper transistor 41 turns off and the current pulse During the current plunging state, the solenoid The coil current flows through the first diode 43, the solenoid coil 55, and the second diode 4. 4 and through the power supply 30.

Following the first current pulse 4, the upper and lower transistors 41, 42 are remains in the OFF state for a rest time of 6.

At the end of the rest time 6, the upper and lower transistors 41 and 42 Both are turned ON and the second current pulse 5 begins.

The current amplitude is again controlled by current monitor 48 and amplitude control 20.

When the sensed amplitude 21 is equal to the imprint amplitude I2, the amplitude control 20 The current limit signal 23 is sent to the switching control 118, which in turn A signal is sent to the current pulse generation circuit 40 to turn off the lower transistor 42. let During the imprint time T2, the current pulse generating circuit 40 is shown in FIG. Switch mode as shown below. During that changeover switch mode, The lower transistor 42 has a substantially steady state voltage equal to the imprint current amplitude I2. It is turned on at a period such that the flow amplitude is maintained during the imprint time T2. It may turn off.

To complete the second current pulse 5, the upper transistor 41 is turned OFF. This causes the current passing through the solenoid coil 55 to drop rapidly.

The first pulse 4 and the amplitude-controlled second pulse 5 combine to produce two motions. to operate the solenoid 56, that is, the print element 64a (see Figure 7). A first control movement that moves the object (light beam) into contact with the substance with a weak force, and the necessary engineering This is a second large force movement that provides a bossing force. This circuit is a solenoid Using a toggle switching mode to control the level of current flowing through the coil 55 By doing so, it is possible to reduce the Achieve efficiency.

(hereinafter referred to as margin) B. Soleno impact pump This part of the invention used for stamping or imprinting on sheet-like materials such as cards. There are 0 methods for controlling the drive of a solenoid embossing system. or is used to drive and control a two-solenoid embossing system. For example, Figures 5 and 6 show how to drive a two-solenoid impact imprinter. 2 is a block diagram showing the main elements of a control circuit 28 used for But long In order to understand the present invention, it is necessary to control a solenoid-type embossing system. It is sufficient to describe such methods and apparatus.

Section 7.8. Figures 9 and 9 show a solenoid used as part of an impact imprinter. id system. The solenoid system includes a solenoid coil 55, a Lint elements 64a, 64b.

a shaft 63 attached to the horseshoe 54 and suspended within the solenoid coil 55; and the solenoid through the recessed bottle 71 and the cavity 79 that receives the recessed bottle 71. and a plunger 62 slidably connected to the side assembly 61. Ru.

Generally, when current flows through solenoid coil 55, the net magnetic field is It is along the axis of the shaft 63. That magnetic field then affects plunger 62. and move the shaft 63 to print the selected material on the printing element 64a. to make the mark. Therefore, by controlling the current of the solenoid coil 55, The print element 64 is controlled by a solenoid. The print element is designed to control the current flowing through the coil 55. minimizes noise while maintaining precise control over the timing and movement of the printed elements 6 to minimize power dissipation in the drive electronics. Controls the movement of 4a. The current detection curve I in FIG. It shows how to apply the current. The method includes a first current pulse 4 and a second current pulse. A current is applied to the solenoid coil 55 in the form of a current pulse 5 . Figures 1.2 and 3 A current monitor 48 coupled to the current pulse control 10 as shown in FIG. Control the timing and amplitude of the second pulse 4.5. Current monitor 48 monitors the current amplitude is detected and the detected amplitude signal 21 is transmitted to the current pulse controller @10.

The current pulse controller [110 compares the detected amplitude signal 21 with stored amplitude information. Then, it is determined when the desired current amplitude in the solenoid coil 55 is obtained. electric The flow pulse control 10 also processes the sensed amplitude signal 21 to output the print element. Obtain speed and position information about point 64a.

Now, a more detailed explanation of the inventive method of controlling a solenoid impact imprinter. Returning to the process, at first no current is applied to the solenoid coil 55. Any current pulse generating circuit designed to generate pulses in the manner described in However, the current pulse generating circuit 40 then passes the solenoid coil 55 through the transmits the first current pulse. The first current pulse 4 is applied to the print element 64a into contact with the material to be imprinted. It is something. The first current pulse 4 then operates the solenoid coil 55. to bring the printing element 64a into substantial contact with the material to be imprinted. The contact time T1 and the contact amplitude It are sufficient to move the contact point to the desired position.

The current pulse generating circuit 40 then generates a second current through the solenoid coil 55. Transmit pulse 5. The second current pulse 5 imprints the selected material. It is intended for So the second current pulse 5 The desired character is printed on the material selected by the print element 64a by operating the file 55. Imprint pulse time T2 and imprint sufficient to imprint only high It has a pulse amplitude I2.

The current pulse generation circuit 40 transmits the first and second current pulses 4.5, while The current monitor 48 detects the current amplitude in the solenoid coil 55. Under this method of obtaining the amplitude signal 21, the detected amplitude signal 21 is processed Provides velocity and position information for print element 64a. Its speed and The position information is used to control the timing of the first and second current pulses 4.5. It will be done. The detected amplitude signal 21 is further processed so that the contact amplitude 1 becomes the first voltage. obtained during the current pulse 4, the imprint pulse amplitude ■2 is the same as that of the second current pulse 5. Amplitude control is performed on the first and second current pulses 4.5 so that they are obtained in between.

Velocity and position information corresponding to the movement of print element 64a is provided by a solenoid controller. From detecting a signal proportional to the current in the coil 55 and therefore also to the force. The resulting zero-order current or force is proportional to the acceleration of the print element 64a. Canada By integrating this sensed signal, which is proportional to the speed, the print element Integrating this speed signal to the 0th order yields a signal proportional to the speed of the motor 64a. A signal proportional to print element 64a is obtained.

Under the apparatus described in FIG. 3, the sensed amplitude signal 21 is is the voltage drop across the sense resistor 49 electrically connected in series with the coil 55. Ru. The sense resistor 49 is electrically connected in series with the solenoid coil 55. Therefore, the voltage drop across the sense resistor 49 passes through the solenoid coil 55. is proportional to the current flowing through the print element 64a, which in turn is proportional to the acceleration of Therefore, the speed of print element 64a is determined by the sense register. The position of the print element is proportional to the integrated voltage drop across the sensor 49. is proportional to the double integral of the voltage drop across resistor 49.

The method further includes the first and second 4.5 of the current pulses. first and second current pulses 4.5, the method uses three current signals as shown in FIG. , that is, full power current signal state 1, gradual current signal state 2, and steep current signal state 2. Current pulse that can selectively generate state 3 (three-state current signal operation) Requires a means of generating energy. The full power current signal l increases in amplitude rapidly over time. Corresponds to an increasing current signal. The tapering current signal 2 is such that the current amplitude is substantially constant. It corresponds to a current signal whose amplitude gradually decreases over time such that it is maintained. plummeting Current signal 3 corresponds to a current signal whose amplitude decreases rapidly over time.

The first current pulse 4 starts with a full power current signal 1 and the solenoid coil 55 Increase the current rapidly over time. The current amplitude of solenoid coil 55 increases Meanwhile, the current monitor 48 detects the current amplitude and combines the detected amplitude signal 21 with the desired The contact amplitude II is compared with the contact amplitude II. After the contact amplitude 1 is obtained, the current pulse generation circuit is 40 applies the gradually decreasing current signal 2 to the solenoid coil 55 to The current is gradually decreased over time during the contact time T1. Finally, contact time After T1 has elapsed, the current pulse generating circuit 40 applies a steep current signal to the solenoid. The current amplitude in coil 55 is increased over time until the current amplitude becomes substantially zero. decrease rapidly.

The second current pulse 5 also starts with the full power current signal 1 and the solenoid coil The current amplitude of 55 is increased rapidly over time.

Again, the amplitude of solenoid coil 55 increases while current monitor 48 Detects the current amplitude of the noid coil 55 and imprints the detected amplitude signal 21. The imprint amplitude I2 is compared with the imprint amplitude I2 to determine when the imprint amplitude I2 is obtained. Impuri After the current pulse amplitude I2 is obtained, the current pulse generation circuit 40 then generates the full power current. The current signal 1 and the gradually decreasing current signal 2 are combined with the imprint amplitude I2 as shown in FIG. such that a substantially steady current amplitude equal to is maintained during the imprint time T2. Switch periodically. Finally, a plummeting current signal 3 is applied to the solenoid coil 55. , until the current amplitude of the solenoid coil 55 becomes substantially zero. It decreases rapidly with

0.2 above” 1Ll 慅 FIG. 7 shows the materials to be engraved, namely a credit card 96 and a card bus 98. The solenoid structure 56 is shown in position. Although not shown, The second solenoid structure is driven in the same way that print element 64a is driven. is used to drive the print element 64a. Current pulse is solenoid When applied through the coil 55, the shaft/plunger/horseshoe configuration 63 ．． 62.54 is operated in the direction indicated by arrow 99.

The horseshoe 54 bites into the print element 64a held in the retaining band 53. and print element 64a responds to the first and second current pulses 4.5. It engages the credit card 96 and stamps it. 2 solenoid type impact imp In the linting system, the print element 64b is also It operates according to the two-pulse method described in items A and B. 1 solenoid type system In the system, the printing element 64a is adjacent to the material to be imprinted. In a steady position.

As shown in FIG. 8, the cavity and recessed bottle arrangement 79.71 The brush 74 is prevented from rotating within the solenoid section 61. Arrange 63 so that it can slide. Embedded bottle 71 is attached to plunger 62 and is slidably received by a bearing 69 located in the cavity 79.

The return spring 70 is located coaxially with respect to the recessed bottle 71 and is placed in the cavity 79. , return the plunger 62 and hold the plunger 62 at the stop position. Beari ring 69 allows recessed bottle 71 to be easily moved relative to solenoid assembly 61. I'm trying to make it possible. The socket screw 73 and washer 72 are plunge Attach the carrier 62 to the shaft 63. The horseshoe 54 sews a thread onto the shaft 63. It is attached to the sea urchin and is stopped by a collar member 65. damping washer -68, thrust washer 67, and retaining ring 66 work together to secure the shaft/plan. The jaw/horseshoe arrangement 63, 62, 54 provides the ability to stop at the stop position. sim 77 is attached to the plunger 62 to provide a non-magnetic gap to the coil 55. When no current is flowing, the plunger 62 is attached to the solenoid assembly 61. Prevent from getting stuck.

9 and 10 best illustrate solenoid section assembly 61. FIGS. Structurally The solenoid part assembly 61 is made of Nisteel laminate containing the following parts: tion first stack 93, center block 82, steel lamination Second stack 811 Cap screw and nut assembly 84.85, No. They are a first adhesive 88 , a second adhesive 90 , and a third adhesive 89 . solenoid The door assembly 61 is attached to the solenoid coil 55 using a first adhesive 88. It has been checked. In a preferred embodiment, first adhesive 88 is an epoxy. , which may be RTV silicon, the lamination is preferably steel. However, large electric currents such as sintered materials minimize power losses due to eddy currents and eddy currents. In a preferred embodiment, it may be made of a suitable magnetic material with resistance. , the central block 82 is made of aluminum or some other non-magnetic material. Ru. In an alternative embodiment, the center plot 82 is a steel-like It may be made of magnetic material.

In yet another embodiment, the central block 82 may be absent, but rather Lenoid part 61 receives shaft/plunger/horseshoe arrangement 63.62.54 It is also possible to have a single stack of laminations made for.

A second adhesive 90 is applied to the laminate to form first and second stacks 93.81. are applied over the entire surface of each lamination to keep these laminations together. hold In a preferred embodiment, the laminations are epoxy to each other, e.g. , bonded by filling with epoxy in vacuum. -Example: California The #8821 and C321 reactors sold by Poxylite are 0 of the present invention. Another adhesive that may be used in other embodiments is made by Loctite of Connecticut. Cyanoacrylates such as Super Bonder #420. 1st stack Before assembling the stack 93, the central block 82 and the second stack 81, The laminations within each stack are welded together in at least one location. (Figure 1O shows four weld points 92), weld points 92 are Provides electrical continuity between all laminated plates. There is. The central block 82 is centrally connected to the first stack 93 and the second stack 81. With a third adhesive across the entire contact surface between block 82 and the lamination. attached. In the preferred embodiment, adhesive 89 is an epoxy.

In another embodiment, the third adhesive 89 is made from Loctite of Connecticut. An anaerobic adhesive such as Super Bonder #324. Finally, the first and second The central block 8°2 between the stacks 93.81 of For this purpose, assemble the cap screw 84 and nut 85 as shown in FIG. MBRI is used.

Another method of assembly includes the first stack 93, the central block 82, and the second stack. The assembly step with the tack 81 and the simultaneous joining of the assembly, i.e. , bonding by exposing the entire assembly to epoxy. many , the preferred method of assembly is to assemble all parts shown in Figures 9 and 10. by assembling and then exposing the entire assembly to epoxy at the same time. is to combine all the assemblies.

In addition, as shown in FIG. 10, the solenoid part 61 and the coil end wire 94a, There is an electrical ground wire 91 for grounding 94b.

Another embodiment of a solenoid structure 100 is shown in FIG. In this example In this case, the anti-rotation feature is provided between the edges of the laminated stack 108. provided by edge 102 of plunger 104. Suitable bearing material 10 9 is on the plunger 104 or laminated stack IOB and the plug This prevents the jar 104 from rubbing against the 10g laminated stack. . A single return spring 110 connects the solenoid to the laminated stack 108 and the plug. is mounted coaxially with respect to a shaft 112 located in the middle of the plunger 104. Ru. The spring receiver recess 110a is provided in the solenoid section 108, and The plunger 104 leans against the solenoid portion lO8. using a single spring This makes it easier to balance the load. Another example of this is if you need If so, it offers more precise control as well as a longer stroke. child The embodiment facilitates the use of smaller mass plungers and reduces the This results in better control since less energy is stored. So The relationship between force and stroke performance is more linear, allowing for more precise control. right.

Even better efficiency can be achieved by magnetic Obtained by making the path shorter. In FIG. 12, the coil 122 is 0 leg 124 wrapped around leg 124a of solenoid stack 124 By wrapping the coil 122 around a, the coil is shown in FIG. It is made shorter than the single coil represented by number 126. Lamination stack 12 4 is also shortened to reduce magnetic path length and improve efficiency. Examples shown In a system, two physically separated components are electrically coupled internally. There is an ile. The coil configuration illustrated in FIG. 12 is similar to the coil configuration illustrated in FIGS. It should be appreciated that this may apply to the examples.

However, even though the numerous features and advantages of the present invention have been described in the foregoing description, the present invention may be Even if shown with details of the structure and function of the and in particular the broad range of expressions set out in the appended claims. Shapes, sizes, and various changes in the arrangement of parts may be made.

(hereinafter referred to as margin) Special Table Sen4-503191 (13) FIG.9 FIG. 10 international search report

Claims (43)

[Claims] 1. The print element used to imprint the selected material A control device for a type of impact imprinting system comprising: a) solenoid means for driving the printing element in response to a current pulse; b) electrically internally connected to said solenoid means and configured to provide first and second current pulses; generating and transmitting a current pulse to said solenoid means, said first current pulse being transmitted to said solenoid means; acting on noid means to bring the print element into proximity with the selected material; the second current having a contact time and contact amplitude sufficient to move the second current to the position; The pulse acts on the solenoid means to cause the print element to move to the selected position. Sufficient imprinting time and imprinting time to imprint any desired character height on the imprinted material. current pulse generating means having a print pulse amplitude; c) electrically internally connected to said current pulse generating means, said first and second sensing the amplitude of the current pulse to represent the amplitude of the first and second current pulses, respectively; current monitoring means for transmitting first and second current amplitude detection signals, and d) electrically and internally connected to the current pulse generating means and the current monitoring means; and switches the current pulse generating means between a pulse generating state and a non-pulse generating state. the first current amplitude detection signal received from the current monitoring means. a first predetermined amplitude value corresponding to the contact pulse amplitude; after a first predetermined time corresponding to said contact pulse time when an amplitude value is detected; , a first signal control for switching the current pulse generating circuit to the pulse non-generating state; means for detecting the second current amplitude detection signal received from the current monitoring means; a second predetermined amplitude value corresponding to the imprint pulse amplitude; When a certain amplitude value is detected, a second position corresponding to the imprint pulse time is detected. After a predetermined period of time, the current pulse generating circuit is switched to the pulse non-generating state. 2. A control characterized in that it has a signal control means and a core current pulse control means. Device. 2. The current pulse generating means generates a first current pulse that generates the first current pulse. a means for generating russ; and second current pulse generating means for generating the second current pulse. 2. The control device according to claim 1, wherein: 3. The current pulse generating means selectively generates a pulse whose amplitude rapidly increases with time. 1 current signal, or a second current signal whose amplitude gradually decreases over time, or , three-state operating means for generating a third current signal whose amplitude decreases rapidly over time. The control device according to claim 1, characterized in that the control device includes: 4. The current pulse generating means maintains an amplitude substantially constant over time. Claims characterized in that they include switching means for generating a current signal that The control device according to item 1. 5. The current pulse generating means further selectively increases the amplitude rapidly with time. or a second current signal whose amplitude gradually decreases over time. or three states that generate a third current signal whose amplitude rapidly decreases over time. operative means, said changeover switching means being configured to switch between said first current signal and said first current signal; a second current signal, wherein the amplitude of the current signal remains substantially constant with respect to time; claim characterized in that the claim is made by alternating switching at a period such that The control device according to item 4. 6. The current pulse generating means includes: (a) electrically internally connected to the current pulse control means; The on/off switch is performed by receiving a control signal from the control means, and when it is on, the power is turned off. an upper connector electrically connected in series with the source means and the upper connector of said solenoid means; (b) electrically internally connected to said current pulse control means; On/off switching is performed by receiving the control signal from the current pulse control means. , when the upper switch is on, the lower connector of the solenoid means and the front and the upper switch is electrically connected in series with the current monitoring means. When the switch and itself are on, current flows from the power supply means to the upper switch; said solenoid means, a low voltage for causing current to flow between said solenoid means and said current monitoring means; Aswitch and (c) when the upper switch is on and the lower switch is off, the current is supplied from the power supply means through the solenoid means and through the solenoid means; electrically connected to said solenoid means and power supply means for returning to said means for a first diode, (d) being electrically grounded and energizing said upper switch and said solenoid means; electrically connected, and the upper switch and the lower switch are off. When a current path is formed by the solenoid means, the first a diode, and a second diode flowing through the power supply means. The control device according to claim 1, characterized in that: 7. The upper switch and the lower switch respectively have upper and lower switches. the upper transistor has a collector, a base, and an emitter. and the lower transistor has a collector, a pace, and an emitter. The bases of the upper and lower transistors are electrically connected to the control means, respectively. connected to receive the control signal from the control means, and to control the upper transistor. The collector is electrically connected to the power supply means and is connected to the emitter of the upper transistor. a connector electrically connected to the upper connector of the solenoid means; a collector of the transistor is electrically connected to the lower connector of the solenoid means; and the emitter of the lower transistor is electrically connected to the current monitoring means. 7. The control device according to claim 6, wherein: 8. The current monitoring means has a sense resistor, and the current monitoring means has a sense register, and A current amplitude sense signal results from measuring the voltage drop across the sense resistor. The control device according to claim 1, characterized in that: 9. The current control means includes: (a) storing and transmitting amplitude information corresponding to the first and second predetermined amplitude values; a main control means for storing and transmitting time information corresponding to the first and second predetermined times; step by step, (b) electrically and internally connected to the main control means and the current pulse generating means; , switch control means for receiving the amplitude and time information from the main control; (c) electrically internally connected to said current monitoring means and said first and second electrical current monitor means; receiving the current amplitude detection signal and electrically internally connected to the switch control means; , the switch control means converts the amplitude information into the first and second current amplitude detection signals. and when detecting the first and second predetermined amplitude values, the first and second predetermined amplitude values are transmitted for comparison. transmitting a trigger to a switch control means, in response to said trigger and said time information; The switch control means is configured to control the current generation means so that the current generation means and the control signals are sent in the correct time order to generate the first and second current pulses. 2. The control device according to claim 1, further comprising amplitude control means. 10. The amplitude control means is further configured such that the first and second current amplitude detection signals are When the current overload limit is equal to or exceeds, said amplitude control means triggers a second trigger. the switch control means in response to the second trigger; The control means switches the current generation means to the non-pulse generation state, and safety protection means to avoid overloading of the current in the current generating means; The control device according to claim 9, characterized in that: 11. The current pulse control means further comprises: the current generation means controlling the current pulse. A system that disconnects the current generating means when it does not respond to a control signal sent from the controller. 2. The control device according to claim 1, further comprising system failure means. 12. The current pulse control means further monitors the power supply means to ensure that the power supply is sufficient. a power line module that sends a warning signal to the main control means when the main control means is and, in response, said main control controls said current pulse control. 10. A control device according to claim 9, characterized in that the means are separated. 13. The control means processes the first and second current amplitude detection signals to control the output of the printer. comprising processing means for providing velocity and position information regarding the lint element; The control device according to claim 1, characterized in that: 14. The processing means integrates the first and second current amplitude detection signals once and processes the first and second current amplitude detection signals. obtaining velocity information regarding the print element; detecting the first and second current amplitudes; an integrator that integrates the signal twice to obtain the position information regarding the print element; 9. The control device according to claim 8, wherein the control device is a stage. 15. Type of sole used in impact imprinting systems A method of generating current pulses through a noid coil, the method comprising: (a) applying a first current signal whose amplitude increases rapidly over time; (b) While applying the first current signal, an electric current is generated in the solenoid coil. sensing the current amplitude to obtain a sensed current amplitude signal; (c) comparing the detected current amplitude signal with a predetermined amplitude value to determine the predetermined amplitude value; (d) determining when the predetermined amplitude value is obtained; and (d) determining when the predetermined amplitude value is obtained. applying a second current signal that gradually decreases over time, and (e) then rapidly increasing with time until said current amplitude becomes substantially zero; applying a decreasing third current signal. 16. Type of sole used in impact imprinting systems A method of generating current pulses through a noid coil, the method comprising: (a) applying a first current signal whose amplitude increases rapidly over time; (b) While applying the first current signal, an electric current is generated in the solenoid coil. sensing the current amplitude to obtain a sensed current amplitude signal; (c) comparing the detected current amplitude signal with a predetermined amplitude value to determine the predetermined amplitude value; (d) determining when the predetermined amplitude value is obtained; Applying one current signal and a second current signal whose amplitude gradually decreases over time, A practically steady current amplitude equal to the predetermined amplitude value is maintained for a predetermined time. and (e) then the current amplitude is substantially applying a third current signal that rapidly decreases over time until it reaches zero; A method characterized by having the following. 17. a solenoid that includes a printed element and at least one solenoid coil a solenoid shaft suspended within the solenoid coil, and the shaft. A solenoid-driven imprinting system with a horseshoe attached to the A method of imprinting a selected substance using (a) acting on said solenoid to move said print element to said selected substance; a first current having a contact time and contact amplitude sufficient to move the current to a position proximate to transmitting pulses through the solenoid coil; (b) acting on said solenoid to cause said print element to move said selected substance; Enough imprint pulse time and impulse to imprint at any character height on transmitting a second current pulse having a lint pulse amplitude; (c) while transmitting the first and second current pulses; detecting the current amplitude using the current amplitude signal and obtaining a detected current amplitude signal; (d) processing the sensed amplitude signal to obtain information about the print element; (e) providing speed information to the first and second electric currents using the speed information; and controlling the timing of the flow pulse. ing method. 18. (a) processing the speed information to provide positional information about the print element; the process of providing information; (b) controlling the timing of the first and second current pulses using the position information; The imprintin according to claim 17, characterized in that it has a step of method. 19. The current amplitude sensing is electrically connected in series with the solenoid coil. This is accomplished by sensing the voltage drop across a sense resistor, and the voltage characterized in that the drop is proportional to the current amplitude in the solenoid coil. The imprinting method according to claim 17. 20. The processing step includes integrating the detected amplitude signal to output the print element. claim 19, further comprising: obtaining the speed information about the client. The imprinting method described in. 21. The processing step includes integrating the detected amplitude signal to output the print element. claim 19, further comprising: obtaining the location information about the client. The imprinting method described in. 22. The step (a) includes: (a) First, the amplitude increases rapidly with time until the contact amplitude is obtained. (b) secondly, during said contact time, applying a first current signal of (c) applying a second current signal, both of which gradually decrease in amplitude; Third, the amplitude decreases rapidly over time until the current amplitude is essentially zero. and applying a third current signal according to claim 17. Imprinting methods described. 23. The step (b) includes: (a) First, the amplitude increases rapidly over time until the imprint amplitude is obtained. (b) secondly applying a first current signal increasing to The increase and decrease of the current amplitude of the imprint is substantially constant equal to the imprint amplitude. the current amplitude is maintained during the imprint time. process, and (c) Third, the amplitude increases rapidly over time until the current amplitude becomes essentially zero. and applying a decreasing current signal that decreases. The imprinting method described in Section. 24. The step (a) includes: (a) applying a first current signal whose amplitude increases rapidly over time; (b) While applying the first current signal, an electric current is generated in the solenoid coil. sensing the current amplitude and obtaining a sensed current amplitude signal; (c) comparing the detected current amplitude signal with a predetermined amplitude value to determine the predetermined amplitude; (d) determining when the predetermined amplitude value is obtained; and (d) determining when the predetermined amplitude value is obtained. applying a second current signal that gradually decreases over time for a period of time; and (e) then with time until said current amplitude becomes substantially zero. and applying a third current signal that rapidly decreases. The imprinting method according to item 17. 25. The step (b) includes: (a) applying a first current signal whose amplitude increases rapidly over time; (b) While applying the first current signal, an electric current is generated in the solenoid coil. sensing the current amplitude and obtaining a sensed current amplitude signal; (c) comparing the detected current amplitude signal with a predetermined amplitude value to determine the predetermined amplitude; (d) determining when the predetermined amplitude value is obtained; Applying a first current signal and a second current signal whose amplitude gradually decreases over time. , a substantially steady current amplitude equal to the predetermined amplitude value is maintained for a predetermined time. and (e) at that time, the current amplitude is substantially applying a third current signal that decreases rapidly over time until it reaches zero; 18. The imprinting method according to claim 17, comprising: 26. A solenoid device, (a) A housing portion having a through hole; extending through the through hole (b) a shaft that is positioned and slidable in the through hole of the accommodating part; (c) a solenoid coil protected within the housing; and (d) the shaft. a plunger attached to a first end of the (e) The accommodating section is (i) a stack of laminations and the laminations of said stack are adjacent; tied to the lamination, and (ii) an arrangement means for maintaining the arrangement of the stacks; Lenoid device. 27. The stack includes first and second stacks of lamination and the first and second stacks of laminations. and a protected central block between the stack and the second stack. 27. The solenoid device according to claim 26. 28. The laminations of the first and second stacks are made of steel. 28. The solenoid device according to claim 27, characterized in that: 29. the laminations of the first and second stacks are made of sintered material; 28. The solenoid device according to claim 27, characterized in that: 30. The laminations of the first and second stacks are arranged such that each of the laminations welded to said adjacent laminations at at least one point between each 28. The solenoid device according to claim 27. 31. The alignment means includes the first stack, the central block, and the second stack. Claim 27, characterized in that it is an adhesive used between a stack of Solenoid device as described. 32. The alignment means is a nut and bolt assembly. 28. The solenoid device according to claim 27. 33. The device further includes a guide means for preventing rotation of the plunger and the shaft. 28. The solenoid device according to claim 27. 34. The guide means of the receptacle includes a recessed portion attached to the plunger. Claim 33, further comprising a cavity in said receptacle for receiving a grinding pin. Solenoid device described in. 35. Said guiding means further comprises: when said resulting magnetic force is applied; when the plunger is compressed and the resulting magnetic force is released. The embedded pin is inserted between the housing part and the plunger so as to return it to the stop position. Claim 3 further comprising a return spring slidably fitted around the The solenoid device according to item 3. 36. The plunger is located between two inner ends of the solenoid housing. , the inner end cooperates with the outer end of the plunger to prevent rotation of the plunger. The solenoid device according to claim 27, characterized in that: 37. The solenoid coil is placed two distances apart in the solenoid housing. 37. The solenoid device of claim 36, wherein the solenoid device is located around the leg. Place. 38. 1. A method of assembling a solenoid housing, the method comprising: (a) lamination; (b) stacking a first stack of laminates in said first stack; protecting the first stack so that the sections are held aligned; , (c) stacking a second stack of laminations; and (d) stacking the second stack of laminations. said second stack so that the laminations in the two stacks are kept aligned. and (e) protecting the first stack and the second stack. and protecting the central block between the block and the block. 39. The step (b) and the step (d) include the first and second stacks. each of the adjacent laminations of the first and second stacks. 39. The method of claim 38, further comprising the step of welding to the section. 40. In the step (e), the central block and the first and second stacks are Claim 38, further comprising the step of applying an adhesive between the Method. 41. In step (e), the center blocks are interposed and bolted together. 39. A method according to claim 38, characterized in that the method comprises the steps of: 42. A method of assembling a solenoid containing means comprising: (a) lamination; (b) stacking a first stack of laminations; and (b) a second stack of laminations. (c) stacking a central block between said first and second stacks; a process of stacking the blocks, and (d) the first stack, the second stack, and the central block are the same; the first stack, the second stack, and the maintaining the alignment of the central block. 43. Before performing step (d), the coil is laminated into the first and second layers of the lamination. Claim characterized in that it is assembled with a second stack and said central block. The method according to item 42.