KR100438791B1 - Prevent device and method for product nonmovements - Google Patents

Abstract

The present invention relates to a device and a method for preventing a malfunction by detecting the cause of the malfunction by controlling the operation of the product automation device, the metal material adhering to the surface of the product supplied from the injection molding machine and suspended matter remaining after the product is removed An apparatus and method are provided for sensing and controlling operating power of a detector and an injection molding machine.

Description

Malfunction prevention device and method in the product automation device. {PREVENT DEVICE AND METHOD FOR PRODUCT NONMOVEMENTS}

The present invention relates to a device and a method for preventing a malfunction of a product automation device, and more particularly, to a device and a method for preventing a malfunction by detecting a cause of a malfunction and controlling the operation of the product automation device.

Today, most of the tasks required to produce a product due to factory automation are performed by machines. In other words, starting with the supply operation of the raw material for the production of the product, a series of operations that move to the next process after the corresponding process is made are all performed by the machine. For this reason, when a malfunction occurs in a specific process among the processes for producing a product, there is a problem that all processes for producing a product are stopped. In addition, as the occurrence of product defects due to the malfunction of the machine increases, measures for preventing the malfunction of the machine have been studied from various angles.

In particular, the main cause of product defects is due to the input of impurities that are harmful to the production of the product during the process or inconsistency between the operation of the machines. It is urgent to make it low. In addition, quickly identifying and solving the cause of such a malfunction will also be a way to lower the defective rate of the product.

Accordingly, an aspect of the present invention is to provide a device and method for detecting a cause of a malfunction and stopping a series of operations for producing a product.

Another object of the present invention is to provide an apparatus and method for detecting a flow of impurities in a product production process and stopping a series of operations for product production.

Still another object of the present invention is to provide an apparatus and method for detecting a defect in a product due to a defect in a production process and stopping a series of operations for producing a product.

In a first aspect to achieve the object as described above, the present invention is the cause of the malfunction caused when the product is completed by a series of process procedures, the finished product is supplied from the injection machine to the hopper coupled to the conveyor In the device for detecting and preventing malfunction, the magnetic field sensor is installed in the hopper to which the product is supplied to form a constant magnetic field around, the magnetic field sensor for detecting the conversion of the magnetic field formed by the metal material attached to the product, An optical sensor installed above the magnetic field sensor and detecting the floating matter remaining in the hopper after the product supplied to the hopper is removed; and a detector and the injection machine by the magnetic sensor and the detection signal from the optical sensor. It characterized in that it comprises a control unit for controlling the operating power supplied to.

In a second aspect to achieve the object as described above, the present invention relates to a finished product in which a product is completed by a series of process procedures, and the finished product is supplied from an injection machine to a hopper coupled to a conveyor. Magnetic field detection sensor for detecting a metal material and an optical sensor installed above the magnetic field detection sensor to detect the floating matter remaining in the hopper after the product supplied to the hopper is removed to detect the cause of the malfunction In the method for preventing the damage, the process of receiving the first detection signal due to the magnetic field change due to the metal material from the magnetic field sensor, and the second detection due to the change in the received optical signal due to the suspended matter from the optical sensor Receiving a signal, and detecting at least one of the first and second detection signals received from the magnetic field sensor and the optical sensor When the signal is received, characterized in that it comprises the step of shutting off the operating power supplied to the detector and the injection machine.

1a to 1b is a view showing the configuration of the product automation apparatus according to an embodiment of the present invention.

2 is a view showing a configuration for preventing a malfunction of the product automation apparatus according to an embodiment of the present invention.

3 is a view showing a control flow for preventing a malfunction of the product automation apparatus according to an embodiment of the present invention.

FIG. 4 is a diagram showing a detailed configuration of the control unit shown in FIG. 2. FIG.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

On the other hand, the product automation device according to an embodiment of the present invention to be described later will propose a configuration that is applied to the finished product is injected, and to move it, but the product proposed in the present invention may cause a malfunction Obviously, it can be applied equally to all fields of automation equipment.

1A to 1B are views illustrating a configuration of a product automation apparatus according to an embodiment of the present invention.

Referring to FIG. 1, the present invention is assembled to the bottom of a conventional injection molding machine to perform an operation. The configuration includes a funnel-shaped hopper 10, and the hopper 10 is a conveyor (injection-molded product) 12) It serves as a guide to move to the side. The conveyor 12 serves to move the injection product passed the inspection process, the end is configured with a storage container 20 containing the product. In addition, a guide plate 16 and a sample box 14 operated by the cylinder 18 are installed at one front end of the conveyor 12. This configuration is for inspecting an injection product that has passed the inspection process, and preferably for inspecting whether the product has foreign substances or burrs.

Meanwhile, as illustrated in FIG. 1B, an outlet 10a is formed at the center of the hopper 10, and a magnetic field sensor 210 is installed on the inner circumferential surface of the outlet 10a. The magnetic field detection sensor 210 is a sensor in which a coil is wound, and when a power is supplied, a magnetic field is formed in the coil. Preferably, the metal material is attached to the product when the injection product is introduced into the hopper 10. It is a sensor to detect.

On the other hand, in the above-mentioned hopper 10a, in detail, an optical sensor 212 composed of a light emitting part and a light receiving part is provided above the magnetic field sensor 210. The optical sensor 212 is a sensor that stops the detector by detecting when the robot arm or the injection product is removed and the remaining molding is introduced into the hopper 10 described above, and then stops the injection machine.

2 is a view showing the configuration of an apparatus for stopping a series of operations for product production by detecting the cause of the malfunction of the product automation apparatus according to an embodiment of the present invention. That is, the configuration shown in FIG. 2 detects a case where a metal material is attached to the surface of the product introduced into the hopper 10 or impurities are introduced into the hopper 10 to perform a series of operations according to the production of the product. It is proposed to block the configuration.

Referring to FIG. 2, the magnetic field sensor 210 detects a metal material that may be attached to the product when the product enters the hopper 10, and outputs a detection signal according to the detection. The magnetic field sensor 210 may use a sensor that forms a magnetic field around by the coil when power is supplied from the outside by winding the coil a predetermined number of times. If unnecessary metal material is attached to the product flowing into the hopper 10, the magnetic material formed by the coil is changed to detect the inflow of the metal material. The detection signal may be the changing magnetic field.

The optical sensor 212 is installed on both sides of the magnetic field sensor 210 as shown in Figure 1b to detect when the robot arm or product is removed and the remaining by-product is introduced into the hopper 10 described above. To output the detection signal. The optical sensor 212 typically includes a light emitting unit and a light receiving unit, and generates a light signal from the light emitting unit, and has a configuration of sensing by sensing the light receiving unit. Therefore, when an unspecified material is positioned between the light emitting unit and the light receiving unit, the optical signal is blocked when the light signal is blocked. The detection signal may be an optical signal received by the light receiver.

The controller 214 controls the operation of the injection machine and the detector by controlling the power supplied to the detector and the injection machine by the detection signals provided from the magnetic field sensor 210 and the optical sensor 212. If a by-product remains even after inflow of a metal material corresponding to impurities from the magnetic field sensor 210 or a product is removed through the optical sensor 212, the operation power of the detector and the injection machine is controlled. Outputs a power supply control signal for

The power supply unit 216 is a component for supplying the power of the components required for the operation of the product automation device to the power supplied to the detector and the injection machine by the control from the control unit 214 for the implementation of the present invention. To control. That is, the operation of the detector is stopped by the power supply control signal provided due to the inflow of impurities from the control unit 214 or the remaining of the suspended matter, and the operation of controlling the supply power to stop the injection machine is performed.

On the other hand, the injection molding machine described above sends a specific signal to the conveyor when power is normally supplied so that the conveyor operates for a predetermined time when the product falls on the conveyor.

3 is a view showing a control flow for preventing a malfunction of the product automation apparatus according to an embodiment of the present invention.

Referring to FIG. 3, in step 310, the controller 214 determines whether a detection signal according to a change in the magnetic field from the magnetic field sensor 210 is received by the metal material attached to the surface of the product supplied from the injection machine. . In addition, in step 312, the control unit 214 detects the detection signal according to the change in the optical signal from the optical sensor 212 according to whether the suspended matter remains in the hopper 10 after removing the product supplied to the hopper 10. Determine if it is received. The suspended matter remaining in the hopper 10 may be a substance introduced after the product is removed or a robot arm introduced into the hopper 10.

If the controller 214 determines that at least one detection signal has been received in steps 310 and 312, the controller 214 proceeds to step 314. The control unit 214 proceeds to step 314 to control the power supply unit 216 to cut off the operating power supplied to the detector. In addition, the control unit 214 proceeds to step 316 to control the power supply unit 216 to cut off the operating power of the injection molding machine.

4 is a diagram illustrating a detailed configuration of the control unit 214 according to an embodiment of the present invention. It can be seen that the configuration shown in FIG. 4 includes a stabilization circuit 410, an amplifier 412, and a power controller 416.

Referring to FIG. 4, the stabilization circuit 410 receives power from an external source and outputs a stable level of power. Typically, the power supplied from the outside is not a stable power supply by including a ripple component. The stabilization circuit 410 blocks the aforementioned ripple component from the external power supply and outputs power having a constant level.

Referring to the detailed configuration of the stabilization circuit 410 shown in FIG. 4, the first and second power supply ports include ports 1, 2, and 3 to which external power is applied, and the port 1 includes two resistors R1 and R3, a variable resistor VR1, and a capacitor C3. Grounded through. Meanwhile, a constant voltage is supplied to the middle terminal of the capacitor C3 and the resistor R3 through the resistor R5, and the middle terminal is grounded by the zener diode ZD. The port 2 is supplied with a voltage of -12 volts, and the port 2 is connected to the base terminal of the PNP transistor Q2 through the capacitor C1. In addition, the port 2 is connected to the emitter terminal of another PNP type transistor Q1 through the capacitor C1. The base terminal of the PNP transistor Q1 is grounded through a resistor R2, and the collector terminal is connected to the port 3. The collector terminal of Q1 is connected to the middle terminal of the resistor R1 and the variable resistor VR1 through a capacitor C2. The collector terminal of Q2 is supplied with a voltage of -12 volts, and the emitter terminal of Q2 is grounded through a resistor R4. On the other hand, TP1 and TP are supplied to the emitter stage of Q2, and the voltage of the emitter stage of Q2 is stabilized through a resistor R6, a capacitor C5, and a resistor R7.

The stabilized power output from the stabilization circuit 410 is provided to the amplifier 412 to output power of a desired level. The amplifier 412 may be typically implemented using an OP amplifier.

Looking at the detailed configuration of the amplifier 412 shown in FIG. 4, the output terminal of the stabilization circuit 410 is grounded through the capacitor C6 and the resistor R8. Meanwhile, two diodes D1 and D2 are connected between the two input terminals of the OP amplifier in the forward and reverse directions, and the diode D3 is connected in the reverse direction from the input terminal of the OP amplifier to the output terminal. Capacitor C9 is connected in parallel with D3. The variable resistor VR3 is connected to one side of an input terminal of the OP amplifier, and the other side thereof is connected to an output terminal of the OP amplifier through a reverse diode D4. Meanwhile, the point where the variable resistor VR3 and the diode D4 are connected is grounded through the variable resistor VR4. The output of the variable resistor VR4 outputs amplified power through a resistor R10 and a capacitor C10 connected in parallel.

An output of the amplifier 412 is input through a predetermined circuit 414 as an input of the power controller 416. The power controller 416 outputs a constant voltage (± 12 volts) from the input amplified power.

Looking at the detailed configuration of the power regulator 416 shown in Figure 4, the input is applied to one input of the amplifier U1B through the resistor R16, the input is grounded through the diode D10. Meanwhile, a capacitor C15 is grounded between the resistor R16 and one input terminal of the amplifier U1B, and a diode C16 is connected between two input terminals of the amplifier U1B with two diodes D11 and D12 in the forward and reverse directions. In addition, the other input of the amplifier U1B is grounded through a resistor R18, and a variable resistor VR5 is connected in parallel with the resistor R18. The other input and output of the amplifier U1B are connected with a resistor R17, and the signals TP and TP5 are applied to the output. On the other hand, a voltage of -12 volts is applied to the input of the light emitting portion of the optical coupler IS01 PC817 through the capacitor C17 and the zener diode ZD2, and -12 volts is applied to the other end of the light emitting portion. The output of the amplifier U1B is connected between the capacitor C17 and the zener diode ZD2. On the other hand, +24 volts is input to the light receiving unit corresponding to the light emitting unit, and the other end of the light receiving unit is grounded through the resistor R20. At this time, the voltage divided by the resistor R20 becomes the final output of the power control unit 416.

The output from the power regulator 416 is supplied as operating power of each component constituting the automatic automation device through a predetermined circuit.

As described above, the present invention monitors the state of the product supplied to the hopper from the injection machine and the progress of the product supplied to the hopper to stop the operation of the detector and the injection machine when the cause of the malfunction is detected. There is an effect that can prevent the malfunction and malfunction of the product in advance.

Claims (4)

In the device to prevent the malfunction by detecting the cause of the malfunction caused by the product is completed by a series of processes, the finished product is supplied from the injection machine to the hopper 10 coupled to the conveyor 12, A magnetic field sensor (210) installed in the hopper (10) to which the product is supplied to form a constant magnetic field in the periphery, and detecting a change in the formed magnetic field by a metal material attached to the product to be supplied; It consists of a light emitting unit for generating an optical signal and a light receiving unit for generating a detection signal by receiving the optical signal, and installed above the magnetic field sensor 210 to remove the product supplied to the hopper 10 An optical sensor 212 for detecting a floating matter remaining in the hopper 10; And a controller (214) for controlling the operating power supplied to the detector and the injection machine according to the detection signals from the magnetic field sensor (210) and the optical sensor (212). delete The method of claim 1, wherein the control unit 214, Stabilization circuit 410 for stabilizing and outputting the power input from the outside to have a constant level, and An amplifier 412 for amplifying and outputting the power output from the stabilization circuit 410 by a predetermined amplification degree; And a power regulator (416) for outputting power of the level required by the detector and the injection machine by the output from the amplifier (412). The product is completed by a series of processes, the magnetic field sensor 210 for detecting the metal material attached to the finished product is supplied from the injection machine to the hopper 10 coupled to the conveyor 12 And an optical sensor 212 installed above the magnetic field sensor 210 to detect a floating material remaining in the hopper 10 after the product supplied to the hopper 10 is removed. In the method for detecting a malfunction to prevent malfunction, Receiving a first detection signal due to a change in magnetic field due to the metal material from the magnetic field sensor 210; Receiving a second detection signal due to a change in the optical signal received from the optical sensor 212 due to the float; Blocking operation power supplied to the detector and the injection machine when at least one of the first and second detection signals received from the magnetic field sensor 210 and the optical sensor 212 is received. The method characterized in that.