TW200900204A - Method of preventing twisted breakage of wire in reinforcing bar binding machine - Google Patents

Abstract

To provide a method of preventing the twisted breakage of a wire in a reinforcing bar binding machine capable of surely performing binding without causing the twisted breakage of the wire by setting a gradient value of torque for ending twisting depending on whether or not it exceeds a preset threshold of twisting torque. In the method of preventing the twisted breakage of the wire in the reinforcing bar binding machine for binding reinforcing bars (a) with the wire 1 in which a change in the gradient value of the twisting torque of a motor 6 for driving a hook 9 holding the wire 1 for binding the reinforcing bars (a) in rotation is monitored and binding is ended when the gradient value of the twisting torque reaches a predetermined gradient value, it is determined whether or not the twisting torque of the motor 6 exceeds a predetermined threshold Ms, and when it exceeds the predetermined thresholds Ms, a predetermined gradient value is set larger, and if not, the predetermined gradient value is set smaller.

Description

200900204 IX. Description of the invention: [Technical field to which the invention pertains] The present invention relates to a method for controlling a reinforcing bar binding machine and a reinforcing bar binding machine, and particularly relates to an iron for improving the binding force when the reinforcing bar is bundled with iron wire The wire is twisted and prevented from breaking when the wire is not broken. [Prior Art] When reinforced concrete is applied to a building or a structure, the criss-crossing bars are poured into the concrete after being bundled with iron wires. The reinforcement of the steel bars caused by the iron wire is carried out by a steel bar binding machine. In the iron bundling caused by the steel bar binding machine, it is necessary to prevent the iron wire from being twisted and broken, and the steel rib is indeed bundled. Therefore, the proposal of Japanese Patent No. 3227693 has a method of preventing twisting and breaking of iron wires. In such a reinforcing bar binding machine, 'the torque is rotated after the motor of the hook body is rotated', and the torsional torque is measured every unit time by the current of (4), and the hook system holds the wire by the hook system. At the point when the torsional torque gradient value is converted from increasing to decreasing, the torsional locking port torsion gradient value caused by the aforementioned torsion device is converted from decreasing to decreasing, which means that the twist of the wire reaches a peak. Therefore, even if the material is stopped in the phase, there is a problem that the iron wire is twisted and broken because there is a continuous /f 乂, 'sleepy time. SUMMARY OF THE INVENTION It provides a correspondence between one or more embodiments of the present invention.

7042-9310-PF 5 200900204 The value of the torsion gradient exceeding the pre-set torsional torsion is corrected. The limit value 'will be used to end the torsion change', thereby preventing the wire from twisting, and preventing the wire from twisting and breaking the bar binding machine in the trapping machine. When using one or more of the present inventions The method has the following steps.

(1) The driving hook body will be measured. The β-fishing system will bind the bundled steel (2) when the aforementioned torsional torque gradient value is reached. The twisting torque gradient of the motor is applied to the iron wire. In order to determine the predetermined gradient value, the bundle (3) determines whether the torque of the aforementioned motor, such as the torsional torque, exceeds a predetermined threshold. When the predetermined threshold value is exceeded and the fault is exceeded, the above-mentioned predetermined gradient value is set to be different. (4) The setting is used to judge that the bundle will be tied when the above threshold is exceeded.

The torsion gradient value of the bundle is larger than the value of the torsion gradient used to judge the end of the bundle when the threshold is not exceeded. Moreover, the aforementioned threshold value and the aforementioned gradient value can also be changed by the user. Further, the value of the Sa limit and the value of the torsion gradient at which the bundling is completed are preferably automatically changed in accordance with the setting of the bundling force. Further, the above-described threshold value and the torque gradient value for judging the end of the bundling may be set to be finely set to the binding end condition by dividing into the complex phase. When using one or more embodiments of the present invention, when determining the rotational drive

7042-9310-PF 6 200900204 Torque ladder for the motor to be controlled by the wire = Whether the motor torsion torque gradient value has reached the stop value, change stop: far from the torsional torque exceeds the preset threshold torque == force gradient value Benchmark. As a result, it will occur in a small bundle. That is, Γ and when the large torque is reached, the torsion will be knotted. • When the rupture is broken, the twist is ended. When the twist is made at the small torsion line:: y = _ way, when the judgment is sufficient, f: ::The magnitude of the torsion (whether or not the threshold value is exceeded) is used to determine the stop detail: Second, the effect of the range of the reinforcing bar binding machine in the binding state is described in the reference example and the patent application [embodiment] An important part of a typical example of the present invention. The reinforcing bar bundles the iron wire 1 fed from the wire wound on the spool 7 into a coiled wire and is partially held and twisted and locked, and the wire coil 1 a is placed on the wire 4 and the cutting device 5 The system is set to be bundled. In an embodiment, it is shown that the reinforcing bar binding machine has: the wire conveying device 2, 1 is fed forward; the guiding arm 3, the torsion device 4, the iron to be retracted; and the cutting device 5, The original side > broken. The wire transfer device 2, the twisting device is mounted on the machine body, and the motor 6 is used as the switch 14, and the reinforcing bar a 12 is turned on. Therefore, in the above-mentioned reinforcing bar binding machine, when the main binding is first cut, the trigger trigger is connected. Rod 8 and trigger switch

7042-9310-PF 7 200900204 The wire 1 is fed out from the spool 7 by the wire transfer device 2. After the wire 1 is wound around the reinforcing bar a by the guide arm 3, the twisting device 4 is actuated. The wire coil la is partially twisted by the hook body 9 to be twisted, whereby the rib a is bundled. Further, the wire coil 1a is cut by the cutting device 5 from the wire i on the original side of the J-machine. The torsion device 11 is provided by the measurement stop motor 6 in the reinforcing bar binding machine: the motor 6 of the measuring unit 1 〇, 4 is measured by the torsional torque; and the torsional torque measured by the control unit το is used to determine the point at which the bundling ends. End the strapping. Fig. 2 is a block diagram showing the electrical construction of the above-mentioned reinforcing steel bundle. No. ίο is a measurement unit, a u-system control unit, a 12-series panel open m-series=group, a 14-series main switch, and a 15-series converts the electrical energy from the battery pack into a DC-DC converter that operates the voltage of the aforementioned control unit. . The measuring unit 1A is connected in series to the motor 6, and the driving current of the motor 6 is measured. By measuring the drive current, it is possible to monitor the change in the torsional torque of the motor 6. The measurement unit 1 is composed of a resistance element, and the drive current flowing in the circuit is obtained from the terminal of the resistance element. Further, it is also possible to use a Hall element type current obtained by measuring a magnetic flux caused by a current flowing in a loop to measure a current of 1G. With the measurement list, the measurement result d measured by 10 is input to the control unit u. The engineering system 兀 ′′ is composed of a microprocessor, and according to the control program resident in the built-in memory, the acupressure ρ, the change of the torsion force of the motor 6 is controlled, and at the same time, the switching element (for example, power) is controlled. Crystal) heart ~ (10) to drive 焉 ε move afL number e 1 ~ e 4, miscellaneous Yue people, go e control horse 46 rotation speed · actuation and stop,

7042-9310-PF 200900204 The aforementioned switching elements 16a to 16d are controlled by applying a voltage of a motor stator coil. The control unit 11' is configured to change the current flowing in the motor 6, and according to the timing signal t from the timing circuit 17, the driving current value is measured every unit time TU, and the driving current measured by the current measurement. The value is compared to the last measured drive current value to monitor the torsional torque gradient value.

\,- Control unit 70 11 ' monitors the increase in torsional torque of the motor 6 for twisting the wire by performing the twisting and locking of the steel bar by the wire. . The drive current value is measured at every unit time, and the gradient value Μ(η) of the torsional torque (drive current value) is monitored from the measured drive current value and the last measured drive power. . When the gradient value Ad ( η ) reaches a predetermined gradient value, it is judged that the steel bundle purple 'J" is charged by the motor 6 to drive the signal el, the switching elements 16a to 16d are also 〇FF and the motor 6 is stopped.曰 and the control element 11 is triggered by the release of the trigger cup 8 after the end of the bundling! 2 becomes 〇 FF as a condition, and it is judged that the tying has been completed. By triggering the trigger link 8 again, the motor 6 driving signal e will be output again, which can correspond to the next tying operation. The change of the torsional torque of the motor when the steel wire is bundled with iron wire, as shown in the driving current characteristic curve of the motor of the 3rd (a) diagram, 'the wire does not follow the winding steel bar at the beginning of the torsion' and the torsion torque curve rises very much. Less or not. While the torsion is being carried out, the wire is tightly wound around the steel bar to twist the torsion, and the gradient of the torsional torsion curve of the towel becomes large. The torsional torque curve becomes more moderate as the wire approaches the torsional fracture. When a torsional fracture occurs,

7042-9310-PF 9 200900204 The torsional torque curve will begin to drop. Because: d force and M change, as shown by the torsion torque curve G1, love m (, rain rice even if the torsional torsion in the low stage produces a torsional fracture to the torsion: 'Γ will make the wire around the steel ring 3 times will start Torsion, however, when the torsion curve is broken by a bar or two iron wires); it is also like a torsion crack and continues to twist the lock: 'ie: torsion torque'. At the higher stage, the twist will start to twist, and θ is usually 'When the iron wire is wound around the steel wire for 3 turns, then it is twisted. Since -Γ'Γ1 is not broken and the three iron wires are slowed down ^ No need to - basically the necessity of twisting the torsion gradient value = =:::r. Therefore, the judgement is made larger, so that the judgment of the force gradient value Η the second gradient value is smaller than the second torsion force when the torsion gradient is stopped. Take a turn. Can not be the curve to slow down and must be twisted again. The name of the bunch of twists and spines is still the end of the - to determine the gradient value, and make,, '. Bundle: The time point of the rotation lock corresponds to the magnitude of the torsional torque. And the first: (=) and the third (b) diagram of the drive current characteristic diagram to illustrate the above-mentioned steel strip purple machine to prevent the wire twisting buckle trigger button, so that the motor rotates, per unit, torque ( In step ST1), at the same time, the twist torsion is determined (step please). The torsional torque gradient value is measured at the limit value ST3 when the set threshold value ^ is not exceeded. Then go to the step

7042-9310-PF 10 200900204 Torsional torsion force η (η ) per unit time and the last measured force gradient value Ad ( η ). The torsion force measured by Tu (by the twist η_ι of this measurement) is calculated to be smaller than the gradient value of the gradient value _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ And continue to reverse, go back to step ST1, and measure the torque to the ladder again: :3 la) As shown in the figure, when the calculated gradient value is less than or equal to the setting::degree value...the torsion system is close to the peak value, so even if the twist is small Γ: After being fully satisfied, it is judged that when the twisting continues, the iron wire enters the step ST7 and the old l κ, the soil w research, then knows the motor and twists the wire to end. When the torque gradient value does not reach the set gradient torsion force exceeds the threshold value Ms, such as f 3 ^ is twisted on the twisted iron wire and is strongly twisted to determine the twist of 3 ... "): 1 2 = " ST5, whether the gradient value Ad(n) calculated by the twist judgment reaches (the second gradient value) is calculated from the torsional torsion force M(w) of the measured torsion force gradient value Ad(;:) phase, as shown in Fig. 3(1), When the ladder; = value stone and the gradient value; S is equal, even if the m of the terrace gradient value Ad(n) does not become smaller even if the gradient value is close to the torsion peak, it is judged that it has a larger torque (four), so When the value is increased to the step ST7, the motor is stopped and the motor is charged. When the front value is 10,000, the judgment "^8 is reversed. When the ladder torque is not reached. The break is not sufficient", the process returns to step ST5, and the force is again measured to prevent the twist. The fracture method is to judge whether the torsional torsion of the test exceeds the threshold Ms every unit time.

Tu leaf test twist twist § § not exceeded,

7042-9310-PF 11 200900204 From the last measured torsional torque and the measured torsion value, when the calculated gradient value reaches the force to calculate the gradient, when re-twisting == (close to the torsional peak ^ will reverse the state of the fracture), when the stop exceeds the threshold (four), even if the calculated gradient value of the gradient (gradient value W, has been better with a larger torsion network;; even in the fine purple, when approaching When the gradient value is set to 10,000, it is judged that the fine tie is already sufficient. That is, in the lower stage of the torsion torque of Zhihe v τp纟, even if the torsion gradient is gentle, 'by continuous twisting, the bundle purple force can be increased, and the torsion force is twisted. When it is large, the bundled purple has been applied with a large torque. Therefore, even if the torsion gradient is not gentle, it is judged that the purple bundle is sufficiently bundled. As a result, the torsion fracture of the iron wire can be prevented. Moreover, the above-mentioned monitoring of the torsional torsion is constant. Time measures the torsional torsion. But '(4) The torsional torsion becomes A, which is close to the torsional torsion peak. When the monitoring time used to monitor the torsional torsion gradient value is the same time width to monitor the torsional torsion gradient value, the torsion is twisted. The peak value will be too large and the iron wire = twisted fracture. Therefore, as the torsional torque becomes larger, the time width used for monitoring the torsional torsion gradient value (4) is reduced in sequence. Moreover, the above-mentioned threshold Ms is not required. When it is fixed, the user can judge by judging the state of the bundle while actually bundling, and setting it by a turntable or the like (not shown). In this case, T will be reversed by making the threshold Ms high. Because of the risk of breakage, the set value of the threshold value Ms can also be set, and the setting of the torque gradient value can be automatically increased by the control loop. The torque gradient value of the threshold value Ms and the judgment criterion for stopping the twist can be experimentally advanced. To grasp, in the memory, the threshold value Ms is set in advance with respect to the torque gradient value, etc., when the threshold value Ms is changed, the reading is automatically read and stopped according to the above chart.

7042-9310-PF 12 200900204 Torque gradient value. Moreover, the threshold Ms is not limited to one, and may be composed of a plurality of thresholds (Ms, MS2, ...) and a torsion gradient value (α, 10,000, ...) that are stopped, and as the torque increases, The stop condition can be changed slightly. Generally, the user has the phenomenon that the twisting and breaking of the iron wire and the locking force are insufficient, and the locking force is insufficient. Therefore, the twisting is stopped in the state where the torque is low, so that the torque gradient is 〇 or negative. When the torsion is stopped in the state, the twisting is sufficiently performed, and the tamping force is increased. However, when the torsional torque is high, the torsional fracture is easily generated when the torsion gradient is close to zero. When the embodiment of the present invention is used, the above state can be avoided. Therefore, the Sa is provided with a twist-proof breaking prevention and prevention of the user's character. b 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 This application was developed on the basis of the application dated on December 22, 2006 (曰本特愿2〇〇6-345663), and the benefit was obtained from the above application. Yi Fen Department [Industrial Applicability] The present invention can be applied to a steel bar binding machine. [Simple diagram of the diagram] Figure. Fig. 1 is a side view of a reinforcing steel fine purple machine using a twist preventing fracture method. Fig. 2 is a block diagram showing the electrical configuration of the above reinforcing steel binding machine.

7042-9310-PF 13 200900204 Fig. 3(a) shows the change of the change. The graph shows the drive current characteristic of the motor drive current (the force of the drive current versus the time). Fig. 3(b) is a graph showing the drive current characteristics of the drive current (torsion torsion) of the drive current versus time. Fig. 4 is a flow chart for explaining the torsion fracture prevention method of the iron wire. [Main component symbol description] 1 Iron wire 6 Motor 10 Measuring unit 11 Control unit Ad Torsion torsion gradient value 扭转 Torsional torque Ms Torsional torque threshold Tu Unit time

7042-9310-PF 14

Claims (1)

200900204 X. Patent application scope: 1. The control method of the steel bar binding machine, the horse, and the torsion force gradient value of the rotary drive hook body are measured, and the above hook system holds the iron wire of the bundled steel bar, and the description is broken. Whether the torsional torque of the motor exceeds a predetermined threshold value, when the torsional torque of the motor does not exceed the predetermined threshold value, when the third torque gradient value is lower than the third gradient value, the fine purple is ended, when the torsional torque of the motor is When the predetermined threshold value is exceeded, when the torsional torque gradient value is lower than the second gradient value larger than the first gradient value, the binding is terminated. 2. For example, Shen Yu patent scope! The control method of the reinforcing bar binding machine described in the item 'the value of at least one of the predetermined threshold value, the ith gradient value, and the second gradient value may be changed by the user. 3. The method for controlling a reinforcing bar binding machine according to the second aspect of the invention, wherein the value of one of the predetermined threshold value, the ith gradient value, and the second gradient value is changed, and the others are The value will also change automatically. 4. For the control method of a steel bar binding machine for applying the patent brain item 2, the bundling is terminated according to the complex threshold and the complex gradient value corresponding to the aforementioned complex threshold. 5. A reinforcing bar binding machine, comprising a control unit, wherein the control unit measures the torsional torsion gradient value of the motor that rotates the hook body, and the fishing system controls the wire of the mesh reinforcing bar to determine whether the torsional torque of the motor is Exceeding the established threshold, 7042-9310-PF 15 200900204 When the aforementioned torsional torsion torque of the motor is lower than the first month! J. Torque torsion of the motor The torsional torsion gradient value is lower than the ratio, and the end of the twist is completed. 1 7042-9310-PF does not exceed the aforementioned threshold 1 gradient value, the end of the bundle exceeds the aforementioned threshold 1 gradient value is greater, at 9 ' before the gradient value 16