Correction control circuit structure for glue blocking prevention during power failure of laminator

Abstract

The utility model discloses a correction control circuit structure for preventing glue blockage during power failure of a laminator, the laminator comprises an upper glue roller, a lower glue roller, a driving motor and a heater, and the driving motor and the heater are connected with a controller unit. The controller unit is provided with a correction control circuit, the correction control circuit comprises a power supply input end, the power supply input end inputs a power supply to the MCU main control module, the MCU main control module is connected with a light-operated induction circuit, a driving motor control circuit and a heating control circuit, the driving motor control circuit is provided with a first switch element, and the heating control circuit is provided with a second switch element. And the light-operated induction circuit outputs a level signal to the MCU main control module, so that the MCU main control unit controls the first switch element and the second switch element to be powered on and powered off. The laminator is restarted after midway power failure, cannot be started when the glue film is not moved out, and can start the driving motor and the heater after the glue film is moved out and the power supply is started again, so that the problem of glue blockage can be effectively prevented, and safe operation is facilitated.

Description

Technical Field

[0001] This disclosure relates to the field of glue applicator control circuit technology, and in particular to a correction control circuit structure for preventing glue blockage during power outages in glue applicators. Background Technology

[0002] When a laminating machine is working, the laminating film and the object to be laminated are first heated between two heating plates. The high temperature melts the hot adhesive layer on the inner surface of the laminating film. Then, the laminating film and the object to be laminated are completely bonded together by the contacting upper and lower laminating rollers. Finally, the object is removed by the contacting exit rollers. Figure 1 (As shown). During this process, the adhesive film blocks the light sensor. After a sudden power outage and subsequent power restoration, the motor starts and drives the upper and lower adhesive rollers to rotate. At this time, the adhesive film remains stationary for an extended period at the very hot contact point between the upper and lower adhesive rollers. The adhesive film sticks to the rollers, and if the machine continues to rotate, there is a risk that the adhesive film may become entangled on the rollers or cause blockage, thus leading to a safety accident. Utility Model Content

[0003] To address the aforementioned issues, this technical solution proposes a corrective control circuit for restarting the laminator after a power outage. The purpose of this corrective control circuit is to determine whether the adhesive film has been removed before restarting the laminator after a power outage. If the adhesive film is present, the drive motor and heater of the equipment cannot be started. If the adhesive film is manually removed, and the machine is found to be without adhesive film, the drive motor and heater can be started.

[0004] According to one aspect of this disclosure, a correction control circuit structure for preventing glue blockage during power outages in a gluing machine is provided. The gluing machine includes an upper glue roller, a lower glue roller, a drive motor, and a heater. The drive motor drives the upper and lower glue rollers to rotate synchronously. The heaters are respectively disposed on the outer sides of the upper and lower glue rollers. The drive motor and the heaters are connected to a controller unit for controlling the power supply to and from the drive motor and the heaters. The controller unit includes a correction control circuit, which includes a power input terminal, a power input terminal to an MCU main control module, and the MCU main control module is connected to a light-controlled sensing circuit, a drive motor control circuit, and a heating control circuit. The drive motor control circuit has a first switching element, and the heating control circuit has a second switching element. The light-controlled sensing circuit outputs a high-level or low-level signal to the MCU main control module to enable the MCU main control unit to control the power supply to and from the first and second switching elements.

[0005] The light-controlled sensing circuit further includes an optocoupler sensor composed of an infrared emitting diode PD1 and an infrared receiving diode LD1, a first current-limiting resistor R21, a second current-limiting resistor R22, a receiving signal output terminal LD, a 5V power input value, the first current-limiting resistor R21, the first current-limiting resistor R21 being connected to the anode of the infrared emitting diode PD1, and the cathode of the infrared emitting diode PD1 being grounded. After the receiving end of the infrared receiving diode LD1 receives the light signal, the receiving signal output terminal LD ​​outputs a level signal to the MCU main control module. When the MCU main control module receives a low-level signal, it controls the first and second switching elements to be de-energized; when it receives a high-level signal, it controls the first and second switching elements to be energized.

[0006] The drive motor control circuit further includes a transistor Q3, a third current-limiting resistor R10, a freewheeling diode D5, and a first switching element. The drive motor is connected to the live wire L and the neutral wire N of the AC power supply. The base of the transistor Q3 is connected to the third current-limiting resistor R10, and the other end of the third current-limiting resistor R10 is connected to the MCU main control module. The emitter of the transistor Q3 is grounded. The first switching element is a relay RELAY. The collector of the transistor Q3 is connected to one end of the relay RELAY coil, and the other end of the relay RELAY coil is connected to a 12V AC power supply. The normally open contact of the relay RELAY controls the AC power supply circuit of the drive motor. The freewheeling diode D5 is connected in reverse parallel across the relay RELAY coil to absorb the reverse electromotive force.

[0007] The heating control circuit further includes an optocoupler KMOC3043, a second switching element, a first voltage divider resistor R2, a second voltage divider resistor R3, a third voltage divider resistor R4, a fifth voltage divider resistor R5, and a filter capacitor C13. The heater is connected to the AC power supply live wire L and neutral wire N. The second switching element is a bidirectional thyristor VT1. One end of the first voltage divider resistor R2 is connected to the pin of the MCU main control module, and the other end is connected to the anode of the LED inside the optocoupler KMOC3043. The cathode of the LED inside the optocoupler KMOC3043 is grounded. The output of the optocoupler KMOC3043 triggers the gate of the bidirectional thyristor VT1 to control the switching of the AC power supply live wire L and neutral wire N connected to the heater. The second voltage divider resistor R3, the third voltage divider resistor R4, and the fifth voltage divider resistor R5 form the voltage divider network of the bidirectional thyristor VT1. The filter capacitor C13 is connected in parallel across the bidirectional thyristor VT1 to suppress voltage spikes.

[0008] Furthermore, the MCU main control module is connected to a control button board, which is equipped with switch buttons for the drive motor control circuit and the heating control circuit, as well as indicator lights and / or buzzers.

[0009] The corrective control circuit structure for preventing glue blockage during power outages in gluing machines, designed in this technical solution, offers the following advantages: Integrated into the gluing machine's controller unit, the optical coupler sensor detects the presence of glue film on the gluing line upon restarting after a power outage. If the sensor outputs a low level to the MCU (Microcontroller Unit), it indicates the presence of glue film, preventing the machine from restarting. Alternatively, manually removing the glue film triggers a high-level output from the MCU, indicating the absence of glue film, allowing the machine to restart. In contrast, existing systems without this control circuit suffer from glue film lingering on the high-heat rollers after a power outage, potentially sticking and causing the film to become entangled or clogged, posing a safety hazard if the machine continues to rotate. If the glue applicator is powered off and restarted midway, the drive motor and heater cannot be started until the glue film has been removed. The drive motor and heater can only be started after the glue film is manually removed and the power is turned on again. This effectively prevents the glue blockage problem mentioned above and promotes safe operation. Attached Figure Description

[0010] Figure 1 This is a simplified schematic diagram of a conventional gluing machine.

[0011] Figure 2 This is a block diagram illustrating the structural principle of the modified control circuit disclosed in this utility model.

[0012] Figure 3 This is a schematic diagram of the pinout of the MCU main control module circuit disclosed in this utility model.

[0013] Figure 4 This is a schematic diagram of the light-controlled sensing circuit structure disclosed in this utility model.

[0014] Figure 5 This is a schematic diagram of the drive motor control circuit structure disclosed in this utility model.

[0015] Figure 6 This is a schematic diagram of the heating control circuit structure disclosed in this utility model. Detailed Implementation

[0016] The technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of this disclosure.

[0017] Please refer to Figures 2 to 6This solution discloses a correction control circuit structure for preventing glue blockage in a glue applicator during power outages. The glue applicator includes an upper glue roller, a lower glue roller, a drive motor, and a heater. The drive motor drives the upper and lower glue rollers to rotate synchronously. The heaters are respectively located on the outer sides of the upper and lower glue rollers. The drive motor and heaters are connected to a controller unit for controlling the power supply to and from the drive motor and heaters. The controller unit includes a correction control circuit, which includes a power input terminal that inputs power to an MCU main control module. The MCU main control module is connected to a light-controlled sensing circuit, a drive motor control circuit, and a heating control circuit. The drive motor control circuit has a first switching element, and the heating control circuit has a second switching element. The light-controlled sensing circuit outputs a high-level or low-level signal to the MCU main control module to enable the MCU main control unit to control the power supply to and from the first and second switching elements.

[0018] Please refer to Figure 2 , Figure 3 The light-controlled sensing circuit includes an optocoupler sensor composed of an infrared emitting diode PD1 and an infrared receiving diode LD1, a first current-limiting resistor R21, a second current-limiting resistor R22, a receiving signal output terminal LD, a 5V power input value, the first current-limiting resistor R21, the first current-limiting resistor R21 is connected to the anode of the infrared emitting diode PD1, and the cathode of the infrared emitting diode PD1 is grounded. After the receiving end of the infrared receiving diode LD1 receives the light signal, the receiving signal output terminal LD ​​outputs a level signal to the MCU main control module. When the MCU main control module receives a low level signal, it controls the first and second switching elements to be de-energized, and when it receives a high level signal, it controls the first and second switching elements to be energized.

[0019] Please refer to Figure 2 , Figure 4 The drive motor control circuit includes a transistor Q3, a third current-limiting resistor R10, a freewheeling diode D5, and a first switching element. The drive motor is connected to the live wire L and the neutral wire N of the AC power supply. The base of the transistor Q3 is connected to the third current-limiting resistor R10, and the other end of the third current-limiting resistor R10 is connected to the MCU main control module. The emitter of the transistor Q3 is grounded. The first switching element is a relay RELAY. The collector of the transistor Q3 is connected to one end of the relay RELAY coil, and the other end of the relay RELAY coil is connected to a 12V AC power supply. The normally open contact of the relay RELAY controls the AC power supply circuit of the drive motor. The freewheeling diode D5 is connected in reverse parallel across the relay RELAY coil to absorb the reverse electromotive force.

[0020] Please refer to Figure 2 , Figure 5The heating control circuit includes an optocoupler KMOC3043, a second switching element, a first voltage divider resistor R2, a second voltage divider resistor R3, a third voltage divider resistor R4, a fifth voltage divider resistor R5, and a filter capacitor C13. The heater is connected to the AC power supply live wire L and neutral wire N. The second switching element is a bidirectional thyristor VT1. One end of the first voltage divider resistor R2 is connected to the pin of the MCU main control module, and the other end is connected to the anode of the LED inside the optocoupler KMOC3043. The cathode of the LED inside the optocoupler KMOC3043 is grounded. The output of the optocoupler KMOC3043 triggers the gate of the bidirectional thyristor VT1 to control the switching of the AC power supply live wire L and neutral wire N connected to the heater. The second voltage divider resistor R3, the third voltage divider resistor R4, and the fifth voltage divider resistor R5 form the voltage divider network of the bidirectional thyristor VT1. The filter capacitor C13 is connected in parallel across the bidirectional thyristor VT1 to suppress voltage spikes.

[0021] Furthermore, the MCU main control module is connected to a control button board, which is equipped with switches for the drive motor control circuit and the heating control circuit, as well as indicator lights and / or buzzers. Preferably, the switches are designed to control both the drive motor and the heater simultaneously. If the glue laminator is powered off during operation and the operator has not removed the glue film, pressing this button will not start the drive motor and heater; instead, an indicator light will illuminate or a buzzer will sound to alert the operator to perform the correct operation.

[0022] The corrective control circuit for preventing glue blockage during power outages in the gluing machine, as disclosed in this solution, is implemented as follows: Power input includes a 5V DC input to the MCU main control module, a 12V DC input to the relay RELAY, and a 220V AC power supply connected to the drive motor and the heater. When the gluing machine experiences a power outage during operation, the above power supplies are disconnected. Upon power restoration, the infrared receiver LD1 of the optocoupler sensor outputs a signal to the MCU main control module. When glue film is detected, the signal output LD, through a level conversion circuit (high → low), outputs a low-level signal to the P137 / INTP0 pin of the MCU main control module. At this time, the K terminal of the MCU main control module outputs a high level, transistor Q3 is cut off, the relay RELAY coil is de-energized, and the contacts open, thus preventing the drive motor from starting. Simultaneously, the Heat output of the MCU main control module is high, the electrocoupler KMOC3043 is not conducting, and the bidirectional thyristor VT1 is turned off, preventing the heater from starting due to power failure.

[0023] Conversely, after correctly removing the adhesive film and restarting the power supply, the LD output terminal sends a high-level signal to the P137 / INTP0 pin of the MCU main control module. At this time, the K terminal of the MCU main control module outputs a low level, transistor Q3 conducts, the RELAY relay coil is energized, and the contacts close, thereby driving the motor to start. Simultaneously, the Heat output of the MCU main control module goes low, the KMOC3043 electrocoupler conducts, and the bidirectional thyristor VT1 conducts, thus starting the heater.

[0024] Compared to existing systems without the aforementioned control circuitry, where the adhesive film remains on the high-heat rollers for an extended period after a power outage, potentially sticking to the rollers and causing the film to become entangled or clogged if the machine continues to run, this new solution prevents such clogging by manually removing the adhesive film before restarting the machine. This ensures safer operation and prevents the film from becoming stuck on the rollers or causing a safety hazard.

[0025] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A correction control circuit structure for preventing glue blocking during power failure of a glue machine, the glue machine comprising an upper glue roller, a lower glue roller, a driving motor, and a heater, the driving motor driving the upper glue roller and the lower glue roller to rotate synchronously, the heater being arranged outside the upper glue roller and the lower glue roller respectively, the driving motor and the heater being connected to a controller unit for controlling the on-off of the driving motor and the heater, characterized in that: the controller unit is provided with a correction control circuit, the correction control circuit comprising a power input end, the power input end inputting power to an MCU main control module, the MCU main control module being connected with a light control sensing circuit, a driving motor control circuit, and a heating control circuit, the driving motor control circuit being provided with a first switching element, the heating control circuit being provided with a second switching element, the light control sensing circuit outputting a high level or low level signal to the MCU main control module to realize the on-off of the first switching element and the second switching element controlled by the MCU main control unit. The light control sensing circuit comprises a photocoupler sensor composed of an infrared emitter tube PD1 and an infrared receiver tube LD1, a first current limiting resistor R21, a second current limiting resistor R22, and a receiving signal output end LD, the 5V power input value of the first current limiting resistor R21, the anode of the infrared emitter tube PD1 being connected to the first current limiting resistor R21, the cathode of the infrared emitter tube PD1 being grounded, the receiving end of the infrared receiver tube LD1 receiving an optical signal, and the receiving signal output end LD outputting a level signal to the MCU main control module, the MCU main control module controlling the first switching element and the second switching element not to be powered on when receiving a low level signal, and controlling the first switching element and the second switching element to be powered on when receiving a high level signal.

2. The correction control circuit structure for preventing glue blocking of the power-off of the glue spreader according to claim 1, wherein, The driving motor control circuit comprises a triode Q3, a third current limiting resistor R10, a freewheeling diode D5, and a first switching element, the driving motor being connected to a live wire L and a neutral wire N of an alternating current power supply, the base of the triode Q3 being connected to the third current limiting resistor R10, the other end of the third current limiting resistor R10 being connected to the MCU main control module, the emitter of the triode Q3 being grounded, the first switching element being a relay RELAY, the collector of the triode Q3 being connected to one end of the coil of the relay RELAY, the other end of the coil of the relay RELAY being connected to a 12V alternating current power supply, the normally open contact of the relay RELAY controlling the alternating current power supply loop of the driving motor, and the freewheeling diode D5 being connected in reverse parallel across the coil of the relay RELAY for absorbing the reverse electromotive force.

3. The correction control circuit structure for preventing glue blocking of the power-off of the glue spreader according to claim 2, wherein, ​ 4. The correction control circuit structure for preventing glue blocking of the power-off of the glue spreader according to claim 2, wherein, The heating control circuit comprises a photocoupler KMOC3043, a second switching element, a first voltage dividing resistor R2, a second voltage dividing resistor R3, a third voltage dividing resistor R4, a fifth voltage dividing resistor R5, a filter capacitor C13, and an AC power supply live wire L and a neutral wire N connected to the heater, the second switching element is a bidirectional thyristor VT1, one end of the first voltage dividing resistor R2 is connected to a pin of the MCU main control module, the other end is connected to an anode of an internal LED of the photocoupler KMOC3043, a cathode of the internal LED of the photocoupler KMOC3043 is grounded, and an output end of the photocoupler KMOC3043 triggers a gate control of the bidirectional thyristor VT1 to control the on-off of the AC power supply live wire L and the neutral wire N connected to the heater; the second voltage dividing resistor R3, the third voltage dividing resistor R4, and the fifth voltage dividing resistor R5 form a voltage dividing network of the bidirectional thyristor VT1, and the filter capacitor C13 is connected in parallel to both ends of the bidirectional thyristor VT1 to suppress voltage spikes.

5. The correction control circuit structure for preventing glue blocking of the power-off of the glue spreader according to any one of claims 1 to 4, characterized in that, The MCU main control module is connected with a control key plate, the control key plate is provided with switch keys for the driving motor control circuit and the heating control circuit, and is provided with an indicating lamp and / or a buzzer.

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