Negative pressure air suction on-off control device of YB95A carton transparent paper packaging machine

Abstract

According to the negative pressure air suction on-off control device of the YB95A barrel transparent paper packaging machine, an increment rotary encoder is connected with the YB95A barrel transparent paper packaging machine, and the output end of the increment rotary encoder is connected into an integrated control circuit board; the integrated control circuit board is connected with the relay, the electromagnetic valve connected with the negative pressure air suction pipeline is connected with the relay, and the integrated control circuit board drives the relay to control the on-off of the electromagnetic valve so as to realize the on-off control of the negative pressure air suction pipeline; the display screen is connected to the integrated control circuit board and used for displaying the time pulse number and the control phase of the incremental rotary encoder. According to the utility model, the problem that the qualified rate of the appearance quality of the transparent paper of the strip box is low due to inaccurate conveying negative-pressure air suction on-off of the YB95 transparent paper of the strip box is solved, the control structure is reasonable in design, the pulse signal of the encoder can be accurately identified, the stability and the safety are good, and the operation safety of equipment is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of cigarette machine packaging equipment control, and in particular relates to a negative pressure suction on-off control device for a YB95A strip box transparent paper packaging machine. Background Art

[0002] The ZB45 packaging unit is the main model of packaging equipment in our factory. However, during the production process, it was found that the appearance quality pass rate of the YB95 box transparent paper was low. After analysis, it was found that during the transportation of the YB95 box transparent paper, the negative pressure suction on and off was not accurate, and the transparent paper transportation stability was poor, which seriously affected the appearance quality of the transparent paper. Therefore, in response to the above problems, it is urgent to design a negative pressure suction on and off control device that can accurately match the phase of the original equipment, make the transparent paper transportation more stable, and improve the appearance quality pass rate of the YB95 box transparent paper. Utility Model Content

[0003] The technical problem solved by the utility model is as follows: a negative pressure suction on-off control device for a YB95A strip box transparent paper packaging machine is provided, wherein an incremental rotary encoder is used to locate the operating phase of the YB95A strip box transparent paper packaging machine, and then the on-off phase is determined by an integrated control circuit board, and then the integrated control circuit board controls a relay to drive the solenoid valve, thereby achieving high-precision control of the on-off of the negative pressure suction pipeline, and finally the control status is displayed on a display screen, thereby solving the problem of low appearance quality pass rate of the YB95 strip box transparent paper due to inaccurate on-off of the negative pressure suction conveying of the YB95 strip box transparent paper. The control structure is reasonably designed, can accurately identify the encoder pulse signal, has good stability and safety, and ensures safe operation of the equipment.

[0004] The technical solution adopted by the utility model: a negative pressure suction on-off control device for a YB95A strip box transparent paper packaging machine, comprising an integrated control circuit board, an incremental rotary encoder, a display screen, two relays and two solenoid valves, wherein the incremental rotary encoder is connected to the YB95A strip box transparent paper packaging machine, and the output end of the incremental rotary encoder is connected to the integrated control circuit board, so as to realize feedback of the phase information of the YB95A strip box transparent paper packaging machine determined by the incremental rotary encoder to the integrated control circuit board; the integrated control circuit board is connected to the relay, and the solenoid valve connected to the negative pressure suction pipeline is connected to the relay, and the integrated control circuit board controls the on-off of the solenoid valve by driving the relay to realize on-off control of the negative pressure suction pipeline; the display screen is connected to the integrated control circuit board, and is used for displaying the time pulse number and control phase of the incremental rotary encoder.

[0005] Among them, the integrated control circuit board includes a minimum system circuit, a power supply voltage stabilization circuit, an incremental rotary encoder signal receiving circuit, a relay control circuit, a flash storage circuit and a serial port screen driving circuit. The power supply voltage stabilization circuit is connected to the minimum system circuit, the incremental rotary encoder signal receiving circuit, the relay control circuit, the flash storage circuit and the serial port screen driving circuit and provides them with required power. The input end of the incremental rotary encoder signal receiving circuit is connected to the output end of the incremental rotary encoder, and the output end of the incremental rotary encoder signal receiving circuit is connected to the input end of the minimum system circuit. The output end of the minimum system circuit is connected to the relay control circuit and the relay is controlled by the relay control circuit according to the control instruction sent by the minimum system circuit. The flash storage circuit and the serial port screen driving circuit are both connected to the minimum system circuit.

[0006] Furthermore, the minimum system circuit uses a STM32f103c8t6 single-chip microcomputer as a control chip.

[0007] Furthermore, the power supply voltage stabilization circuit adopts a switching power supply chip U1 and a linear regulator U2 to form a two-stage voltage stabilization circuit, and provides 5V and 3.3V power supplies for the integrated control circuit board; wherein, the No. 2 pin of the switching power supply chip U1 is connected to a Schottky diode D3, a power inductor L1 and a capacitor C3 constituting a switching circuit; the No. 1 pin of the switching power supply chip U1 and the No. 1 pin of the wiring terminal U9 are connected to a switch SW1 and a self-recovery fuse F1 constituting a safety protection circuit for limiting the maximum power supply current to 2A, a Schottky diode D1 for preventing the external power supply voltage from being reversely connected and burning the integrated control circuit board, and a capacitor C3 for absorbing external The TVS tube D2 is used to prevent the surge voltage of the power supply, the electrolytic capacitor C1 and the capacitor C2 for stabilizing the input voltage are connected in parallel to the pin 1 of the switching power supply chip U1, and the electrolytic capacitor C3, the capacitor C5 and the TVS tube D5 connected in parallel between the pins 3 and 4 of the switching power supply chip U1 are used to stabilize the 5V output power supply; the 5V output power supply of the switching power supply chip U1 is connected to the linear regulator U2, and the capacitor C8 and the capacitor C9 for converting the 5V voltage into 3.3V are connected in series between the pins 4 and 3 of the linear regulator U2, and the capacitor C10 as a 3.3V decoupling capacitor is connected to the pin 2 of the linear regulator U2.

[0008] Furthermore, the A, B, and Z input circuits of the incremental rotary encoder signal receiving circuit are the same; wherein the A-phase signal of the incremental rotary encoder drives the optocoupler isolator U4 to isolate and amplify the signal input by the incremental rotary encoder through the input current limiting resistor R15, and the current limiting resistor R15 and the capacitor C16 connected between the pin 1 and the pin 2 of the optocoupler isolator U4 form an RC low-pass filter for avoiding high-frequency interference signals on the transmission line of the incremental rotary encoder; a capacitor C16 connected in parallel with the capacitor C16 is connected between the pin 1 and the pin 2 of the optocoupler isolator U4. Resistor R5, and the resistor R5 and the optocoupler isolator U4 form an induced voltage filter circuit for filtering out the low-voltage induced signal on the transmission line of the incremental rotary encoder; Pin 2 of the optocoupler isolator U4 is connected to a light-emitting diode LED3 for displaying the transmission status of the incremental rotary encoder; Pin 4 of the optocoupler isolator U4 is connected to a pull-up resistor R8, and a pull-down resistor R10 for current limiting to protect the minimum system circuit sampling pin is connected to pin 4 of the optocoupler isolator U4, and a decoupling capacitor C19 grounded and connected to the pull-down resistor R10 is used to stabilize the 3.3V voltage.

[0009] Furthermore, the relay control circuit is provided with two paths with completely identical structures, and uses an EL357N optocoupler isolator to control an N-MOS tube to drive two relays respectively;

[0010] One of the relay control circuits includes an EL357N optocoupler isolator U8, wherein pin 1 of the EL357N optocoupler isolator U8 is connected to a 3.3V power supply of a power supply voltage stabilization circuit via a pull-up resistor R30, and pin 2 of the EL357N optocoupler isolator U8 is connected to a minimum system circuit and the minimum system circuit controls the on / off of pins 3 and 4 of the EL357N optocoupler isolator U8; pin 4 of the EL357N optocoupler isolator U8 is connected to a 3.3V power supply of a power supply voltage stabilization circuit, pin 3 of the EL357N optocoupler isolator U8 is connected to a G pole of an N-MOS tube Q1 via a current limiting resistor R31 and controls the on / off of the N-MOS tube Q1, and a resistor R29 connected to the G pole of the N-MOS tube Q1 is used to release the G pole parasitic capacitance voltage of the N-MOS tube Q1 and then turn off the N-MOS tube Q1. , the voltage-stabilizing diode D10 connected to the G pole of the N-MOS tube Q1 is used to stabilize the VGS voltage, and the current-limiting resistor R27 and the light-emitting diode LED7 connected in series to the No. 3 pin of the EL357N optocoupler isolator U8 are used to display the switch state of the N-MOS tube Q1; the D pole of the N-MOS tube Q1 is connected to the 24V power supply through the pull-up resistor R26, and the resistor R25 connected in parallel to the D pole of the N-MOS tube Q1 and the diode D9 are connected in series to form a relay coil protection circuit for releasing the back electromotive force of the relay coil, and the relay is connected to the relay control circuit through the wiring terminal CN6; the RC protection circuit for protecting the N-MOS tube Q1 is provided between the D pole and the S pole of the N-MOS tube Q1, wherein the RC protection circuit adopts a structure in which the resistor R28 and the capacitor C25 are connected in series and then connected in parallel with the voltage-stabilizing diode D11.

[0011] Furthermore, the flash storage circuit uses a flash chip U11 of model W25Q128, and the flash chip U11 is connected to the minimum system circuit using SPI communication.

[0012] Furthermore, the serial port screen driving circuit is connected to the display screen using a 1x4P wire-to-board / wire-to-wire connector with a spacing of 2.5 mm.

[0013] Furthermore, the incremental rotary encoder adopts Koyo TRD-N1000-RZW-5M encoder, whose resolution is 1000 and power input range is 5~30V; the display screen adopts display screen model TJC3224T124_011, and its screen size is 2.8 inches and the resolution is 320*240.

[0014] Furthermore, the relay adopts a relay with a model of PLC-RSC-24DC / 21; the solenoid valve adopts a MAC solenoid valve with a model of 45A-BCE-DEFG-1.

[0015] The advantages of this utility model compared with the prior art:

[0016] 1. This technical solution uses an incremental rotary encoder to locate the operating phase of the YB95A strip box transparent paper packaging machine, and then determines the on-off phase through the integrated control circuit board, and then the integrated control circuit board controls the relay to drive the solenoid valve to achieve high-precision control of the on-off of the negative pressure suction pipeline. Finally, the display screen displays the control status, which solves the problem of low appearance quality pass rate of the YB95 strip box transparent paper due to inaccurate on-off of the negative pressure suction conveying;

[0017] 2. Compared with the original equipment's mechanical on-off negative pressure suction method, this technical solution has a higher control accuracy and sensitivity due to the mechanical on-off structure, which can achieve more accurate on-off of negative pressure suction, avoiding appearance quality defects of the strip box transparent paper caused by inaccurate on-off of negative pressure suction due to mechanical wear;

[0018] 3. The integrated control circuit board designed by this technical solution covers multiple safety protection structures such as overvoltage, short circuit, overcurrent, surge voltage absorption, and back electromotive force absorption to ensure the safe operation of the equipment;

[0019] 4. The incremental rotary encoder signal receiving circuit in this technical solution is designed with a low-pass filter and an induced voltage filter circuit, which can accurately identify the encoder pulse signal and improve the accuracy and reliability of the phase information of the YB95A strip box transparent paper packaging machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is the control principle diagram of the utility model;

[0021] Figure 2 This is the power supply voltage stabilization circuit diagram of the utility model;

[0022] Figure 3 This is the signal receiving circuit diagram of the incremental rotary encoder of the utility model;

[0023] Figure 4 This is the relay control circuit diagram of the utility model;

[0024] Figure 5 This is the minimum system circuit diagram of the utility model;

[0025] Figure 6 This is the flash storage circuit diagram of the utility model;

[0026] Figure 7 This is the serial port screen driving circuit diagram of the utility model. DETAILED DESCRIPTION

[0027] The following will be combined with the embodiment of the present utility model Figure 1-7, clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] It should be noted that, in this document, unless otherwise stated, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc., are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0029] In this document, the terms "comprises", "comprising" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further limitations. The elements defined by the sentence "comprising a ..." do not exclude the presence of other identical elements in the process, method, article or device comprising the elements.

[0030] YB95A strip box transparent paper packaging machine negative pressure suction on-off control device, such as Figure 1As shown, it includes an integrated control circuit board 1, an incremental rotary encoder 2, a display screen 3, two relays 4 and two solenoid valves 5, the incremental rotary encoder 2 is connected to the YB95A strip box transparent paper packaging machine, and the output end of the incremental rotary encoder 2 is connected to the integrated control circuit board 1, so as to realize the feedback of the phase information of the YB95A strip box transparent paper packaging machine determined by the incremental rotary encoder 2 to the integrated control circuit board 1; the integrated control circuit board 1 is connected to the relay 4, and the solenoid valve 5 connected to the negative pressure suction pipeline is connected to the relay 4, and the integrated control circuit board 1 controls the on-off of the solenoid valve 5 by driving the relay 4 to realize the on-off control of the negative pressure suction pipeline; the display screen 3 is connected to the integrated control circuit board 1, and is used to display the incremental rotary encoder 2 time pulse number and control phase; in the above structure, the incremental rotary encoder 2 locates the running phase of the YB95A strip box transparent paper packaging machine, and then the on-off phase is determined by the integrated control circuit board 1, and then the integrated control circuit board 1 controls the relay 4 to drive the solenoid valve 5, so as to realize the on-off control of the negative pressure suction pipeline with high precision, and finally the display screen 3 displays the control status, which solves the problem of low qualified rate of appearance quality of strip box transparent paper caused by inaccurate on-off of negative pressure suction of YB95 strip box transparent paper; compared with the mechanical on-off negative pressure suction method of the original equipment, the control accuracy and sensitivity are due to the mechanical on-off structure, which can achieve more accurate on-off of negative pressure suction, avoiding the appearance quality defects of strip box transparent paper caused by inaccurate on-off of negative pressure suction due to mechanical wear;

[0031] The specific composition structure of the integrated control circuit board 1 is as follows: the integrated control circuit board 1 includes a minimum system circuit, a power supply voltage stabilizing circuit, an incremental rotary encoder signal receiving circuit, a relay control circuit, a flash storage circuit and a serial port screen driving circuit. The power supply voltage stabilizing circuit is connected to the minimum system circuit, the incremental rotary encoder signal receiving circuit, the relay control circuit, the flash storage circuit and the serial port screen driving circuit and provides the required power for them. The input end of the incremental rotary encoder signal receiving circuit is connected to the output end of the incremental rotary encoder 2, and the output end of the incremental rotary encoder signal receiving circuit is connected to the input end of the minimum system circuit. The output end of the minimum system circuit is connected to the relay control circuit and the relay 4 is controlled by the relay control circuit according to the control instruction sent by the minimum system circuit. The flash storage circuit and the serial port screen driving circuit are both connected to the minimum system circuit. The designed integrated control circuit board 1 covers a variety of safety protection structures such as overvoltage, short circuit, overcurrent, surge voltage absorption, and back electromotive force absorption to ensure the safe operation of the equipment. Among them, the size of the integrated control circuit board 1 is 75mm×90mm.

[0032] like Figure 5As shown, the minimum system circuit adopts STM32f103c8t6 single-chip microcomputer as the control chip, including a reset circuit, a serial communication circuit, a boot circuit, a crystal oscillator circuit, etc.

[0033] like Figure 2 As shown, the power supply voltage stabilization circuit adopts XL1509-5.0E1 switching power supply chip U1 and AMS1117-3.3 linear regulator U2 to form a two-stage voltage stabilization circuit, and provides 5V and 3.3V power supplies for the integrated control circuit board 1; wherein, the No. 2 pin of the switching power supply chip U1 is connected with a Schottky diode D3, a power inductor L1 and a capacitor C3 constituting a switching circuit; the No. 1 pin of the switching power supply chip U1 and the No. 1 pin of the wiring terminal U9 are connected with a switch SW1 and a self-recovery fuse F1 constituting a safety protection circuit for limiting the power supply current to a maximum of 2A, and a Schottky resistor F2 for preventing the external power supply voltage from being reversely connected and burning the integrated control circuit board 1. A diode D1 and a TVS tube D2 for absorbing surge voltage of an external power supply; the No. 1 pin of the switching power supply chip U1 is connected in parallel with an electrolytic capacitor C1 and a capacitor C2 for stabilizing the input voltage, and the electrolytic capacitor C3, the capacitor C5 and the TVS tube D5 connected in parallel between the No. 3 pin and the No. 4 pin of the switching power supply chip U1 are used to stabilize the 5V output power supply; the 5V output power supply of the switching power supply chip U1 is connected to the linear regulator U2, and the capacitor C8 and the capacitor C9 for converting the 5V voltage into 3.3V are connected in series between the No. 4 pin and the No. 3 pin of the linear regulator U2, and the No. 2 pin of the linear regulator U2 is connected with a capacitor C10 as a 3.3V decoupling capacitor.

[0034] like Figure 3As shown, the A, B, and Z input circuits of the incremental rotary encoder signal receiving circuit are the same, and in0 is an extended design, and its connection method is the same as the A, B, and Z input circuits; wherein the A phase signal of the incremental rotary encoder 2 drives the EL357N optocoupler isolator U4 to isolate and amplify the signal input by the incremental rotary encoder 2 through the input current limiting resistor R15, and the current limiting resistor R15 and the capacitor C16 connected between the No. 1 pin and the No. 2 pin of the optocoupler isolator U4 form an RC low-pass filter to avoid high-frequency interference signals on the transmission line of the incremental rotary encoder 2; a resistor R5 connected in parallel with the capacitor C16 is connected between the No. 1 pin and the No. 2 pin of the optocoupler isolator U4, and the resistor R5 and the optocoupler isolator U4 form an induction voltage filter circuit, which is used to to filter out the low-voltage inductive signal on the transmission line of the incremental rotary encoder 2; the No. 2 pin of the optocoupler isolator U4 is connected to a light-emitting diode LED3 for displaying the transmission status of the incremental rotary encoder 2; the No. 4 pin of the optocoupler isolator U4 is connected to the pull-up resistor R8, and the pull-down resistor R10 used for current limiting to protect the minimum system circuit sampling pin is connected to the No. 4 pin of the optocoupler isolator U4, and the decoupling capacitor C19 connected to the ground and the pull-down resistor R10 is used to stabilize the 3.3V voltage; the incremental rotary encoder signal receiving circuit is designed with a low-pass filter and an inductive voltage filter circuit, which can accurately identify the encoder pulse signal and improve the accuracy and reliability of the phase information of the YB95A strip box transparent paper packaging machine; the connection method of the B and Z input circuits is the same as that of the A input circuit.

[0035] like Figure 4 As shown, the relay control circuit has two paths with exactly the same structure, and uses an EL357N optocoupler isolator to control the N-MOS tube to drive two relays 4 respectively;

[0036] One of the relay control circuits includes an EL357N optocoupler isolator U8, wherein pin 1 of the EL357N optocoupler isolator U8 is connected to a 3.3V power supply of a power supply voltage stabilization circuit via a pull-up resistor R30, and pin 2 of the EL357N optocoupler isolator U8 is connected to a minimum system circuit and the minimum system circuit controls the on / off of pins 3 and 4 of the EL357N optocoupler isolator U8; pin 4 of the EL357N optocoupler isolator U8 is connected to a 3.3V power supply of a power supply voltage stabilization circuit, pin 3 of the EL357N optocoupler isolator U8 is connected to a G pole of an N-MOS tube Q1 via a current limiting resistor R31 and controls the on / off of the N-MOS tube Q1, and a resistor R29 connected to the G pole of the N-MOS tube Q1 is used to release the G pole parasitic capacitance voltage of the N-MOS tube Q1 and then turn off the N-MOS tube Q1, and is connected to the N-MOS tube Q1. The voltage-stabilizing diode D10 at the G pole of the N-MOS tube is used to stabilize the VGS voltage, and the current-limiting resistor R27 and the light-emitting diode LED7 connected in series to the No. 3 pin of the EL357N optocoupler isolator U8 are used to display the switch state of the N-MOS tube Q1; the D pole of the N-MOS tube Q1 is connected to the 24V power supply through the pull-up resistor R26, and the resistor R25 connected in parallel to the D pole of the N-MOS tube Q1 is connected in series with the diode D9 to form a relay coil protection circuit for releasing the back electromotive force of the relay 4 coil, and the relay 4 is connected to the relay control circuit through the wiring terminal CN6; an RC protection circuit for protecting the N-MOS tube Q1 is provided between the D pole and the S pole of the N-MOS tube Q1, wherein the RC protection circuit adopts a structure in which the resistor R28 and the capacitor C25 are connected in series and then connected in parallel with the voltage-stabilizing diode D11; the structure of the other relay control circuit is the same as the above structure.

[0037] like Figure 6 As shown, the flash storage circuit uses a flash chip U11 of model W25Q128, and the flash chip U11 is connected to the minimum system circuit using SPI communication; specifically, as Figure 7 As shown, the serial port screen driving circuit is connected to the display screen 3 using a 1x4P wire-to-board / wire-to-wire connector with a spacing of 2.5 mm.

[0038] Among them, the incremental rotary encoder 2 adopts the Koyo TRD-N1000-RZW-5M encoder, whose resolution is 1000 and the power input range is 5-30V; the display screen 3 adopts the display screen with model TJC3224T124_011, and its screen size is 2.8 inches and the resolution is 320*240; specifically, the relay 4 adopts the relay with model PLC-RSC-24DC / 21; the solenoid valve 5 adopts the MAC solenoid valve with model 45A-BCE-DEFG-1.

[0039] The control structure of this solution is reasonably designed, can accurately identify the encoder pulse signal, has good stability and safety, and ensures the safe operation of the equipment.

[0040] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0041] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. The negative pressure suction on-off control device of the YB95A strip box transparent paper packaging machine is characterized by: The invention comprises an integrated control circuit board (1), an incremental rotary encoder (2), a display screen (3), two relays (4) and two electromagnetic valves (5); the incremental rotary encoder (2) is connected to a YB95A strip box transparent paper packaging machine, and the output end of the incremental rotary encoder (2) is connected to the integrated control circuit board (1), so that the phase information of the YB95A strip box transparent paper packaging machine determined by the incremental rotary encoder (2) is fed back to the integrated control circuit board (1); the integrated control circuit board (1) is connected to the relay (4), and the electromagnetic valve (5) connected to the negative pressure suction pipeline is connected to the relay (4), and the integrated control circuit board (1) controls the on and off of the electromagnetic valve (5) by driving the relay (4) to realize the on and off control of the negative pressure suction pipeline; the display screen (3) is connected to the integrated control circuit board (1) and is used to display the time pulse number and control phase of the incremental rotary encoder (2).

2. According to claim 1, the negative pressure suction on-off control device of the YB95A strip box transparent paper packaging machine is characterized in that: The integrated control circuit board (1) comprises a minimum system circuit, a power supply voltage stabilizing circuit, an incremental rotary encoder signal receiving circuit, a relay control circuit, a flash storage circuit and a serial port screen driving circuit. The power supply voltage stabilizing circuit is connected to the minimum system circuit, the incremental rotary encoder signal receiving circuit, the relay control circuit, the flash storage circuit and the serial port screen driving circuit and provides the required power for them. The input end of the incremental rotary encoder signal receiving circuit is connected to the output end of the incremental rotary encoder (2), and the output end of the incremental rotary encoder signal receiving circuit is connected to the input end of the minimum system circuit. The output end of the minimum system circuit is connected to the relay control circuit and the relay (4) is controlled by the relay control circuit according to the control instruction sent by the minimum system circuit. The flash storage circuit and the serial port screen driving circuit are both connected to the minimum system circuit.

3. The negative pressure suction on-off control device of the YB95A strip box transparent paper packaging machine according to claim 2 is characterized in that: The minimum system circuit adopts the STM32f103c8t6 single-chip microcomputer as the control chip.

4. The negative pressure suction on-off control device of the YB95A strip box transparent paper packaging machine according to claim 2 is characterized in that: The power supply voltage stabilization circuit adopts a switching power supply chip U1 and a linear voltage regulator U2 to form a two-stage voltage stabilization circuit, and provides 5V and 3.3V power supplies for the integrated control circuit board (1); wherein the No. 2 pin of the switching power supply chip U1 is connected to a Schottky diode D3, a power inductor L1 and a capacitor C3 constituting a switching circuit; the No. 1 pin of the switching power supply chip U1 and the No. 1 pin of the wiring terminal U9 are connected to a switch SW1 and a self-recovery fuse F1 constituting a safety protection circuit for limiting the maximum power supply current to 2A, a Schottky diode D1 for preventing the external power supply voltage from being reversely connected and burning the integrated control circuit board (1), and a capacitor C3 for absorbing external The TVS tube D2 is used to prevent the surge voltage of the power supply, the electrolytic capacitor C1 and the capacitor C2 for stabilizing the input voltage are connected in parallel to the pin 1 of the switching power supply chip U1, and the electrolytic capacitor C3, the capacitor C5 and the TVS tube D5 connected in parallel between the pins 3 and 4 of the switching power supply chip U1 are used to stabilize the 5V output power supply; the 5V output power supply of the switching power supply chip U1 is connected to the linear regulator U2, and the capacitor C8 and the capacitor C9 for converting the 5V voltage into 3.3V are connected in series between the pins 4 and 3 of the linear regulator U2, and the capacitor C10 as a 3.3V decoupling capacitor is connected to the pin 2 of the linear regulator U2.

5. The negative pressure suction on-off control device of the YB95A strip box transparent paper packaging machine according to claim 2 is characterized in that: The A, B, and Z input circuits of the incremental rotary encoder signal receiving circuit are the same; wherein the A phase signal of the incremental rotary encoder (2) drives the optical coupler isolator U4 to isolate and amplify the signal input by the incremental rotary encoder (2) through the input current limiting resistor R15, and the current limiting resistor R15 and the capacitor C16 connected between the No. 1 pin and the No. 2 pin of the optical coupler isolator U4 form an RC low-pass filter for avoiding high-frequency interference signals on the transmission line of the incremental rotary encoder (2); a resistor connected in parallel with the capacitor C16 is connected between the No. 1 pin and the No. 2 pin of the optical coupler isolator U4 R5, and the resistor R5 and the optocoupler isolator U4 form an induction voltage filtering circuit for filtering out low-voltage induction signals on the transmission line of the incremental rotary encoder (2); the No. 2 pin of the optocoupler isolator U4 is connected to a light-emitting diode LED3 for displaying the transmission status of the incremental rotary encoder (2); the No. 4 pin of the optocoupler isolator U4 is connected to a pull-up resistor R8, and a pull-down resistor R10 for limiting current to protect the minimum system circuit sampling pin is connected to the No. 4 pin of the optocoupler isolator U4, and a decoupling capacitor C19 grounded and connected to the pull-down resistor R10 is used to stabilize the 3.3V voltage.

6. The negative pressure suction on-off control device of the YB95A strip box transparent paper packaging machine according to claim 2 is characterized in that: The relay control circuit is provided with two paths with completely identical structures, and uses an EL357N optical coupler isolator to control an N-MOS tube to drive two relays (4) respectively; One of the relay control circuits includes an EL357N optocoupler isolator U8, wherein pin 1 of the EL357N optocoupler isolator U8 is connected to a 3.3V power supply of a power supply voltage stabilization circuit via a pull-up resistor R30, and pin 2 of the EL357N optocoupler isolator U8 is connected to a minimum system circuit and the minimum system circuit controls the on / off of pins 3 and 4 of the EL357N optocoupler isolator U8; pin 4 of the EL357N optocoupler isolator U8 is connected to a 3.3V power supply of a power supply voltage stabilization circuit, pin 3 of the EL357N optocoupler isolator U8 is connected to a G pole of an N-MOS tube Q1 via a current limiting resistor R31 and controls the on / off of the N-MOS tube Q1, and a resistor R29 connected to the G pole of the N-MOS tube Q1 is used to release the G pole parasitic capacitance voltage of the N-MOS tube Q1 and then turn off the N-MOS tube Q1, and connect The voltage-stabilizing diode D10 at the G pole of the N-MOS tube Q1 is used to stabilize the VGS voltage, and the current-limiting resistor R27 and the light-emitting diode LED7 connected in series to the No. 3 pin of the EL357N optocoupler isolator U8 are used to display the switch state of the N-MOS tube Q1; the D pole of the N-MOS tube Q1 is connected to a 24V power supply through a pull-up resistor R26, and the resistor R25 connected in parallel to the D pole of the N-MOS tube Q1 and the diode D9 are connected in series to form a relay coil protection circuit for releasing the back electromotive force of the relay (4) coil, and the relay (4) is connected to the relay control circuit through the wiring terminal CN6; the RC protection circuit for protecting the N-MOS tube Q1 is provided between the D pole and the S pole of the N-MOS tube Q1, wherein the RC protection circuit adopts a structure in which a resistor R28 and a capacitor C25 are connected in series and then connected in parallel to the voltage-stabilizing diode D11.

7. The negative pressure suction on-off control device of the YB95A strip box transparent paper packaging machine according to claim 2 is characterized by: The flash storage circuit uses a flash chip U11 of model W25Q128, and the flash chip U11 is connected to the minimum system circuit using SPI communication.

8. The negative pressure suction on-off control device of the YB95A strip box transparent paper packaging machine according to claim 2 is characterized by: The serial port screen driving circuit is connected to the display screen (3) using a 1x4P wire-to-board / wire-to-wire connector with a spacing of 2.5 mm.

9. The negative pressure suction on-off control device for the YB95A strip box transparent paper packaging machine according to any one of claims 1 to 8, characterized in that: The incremental rotary encoder (2) adopts a Koyo TRD-N1000-RZW-5M encoder, whose resolution is 1000 and power input range is 5 to 30V; the display screen (3) adopts a display screen with model number TJC3224T124_011, and its screen size is 2.8 inches and the resolution is 320*240.

10. The negative pressure suction on-off control device of the YB95A strip box transparent paper packaging machine according to claim 9 is characterized in that: The relay (4) is a relay of model PLC-RSC-24DC / 21; the solenoid valve (5) is a MAC solenoid valve of model 45A-BCE-DEFG-1.

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