A special electrical control system for nail foil machine

Abstract

The invention discloses a special electrical control system for a nail foil machine, which includes: a PLC controller, a 24V switching power supply, a 5V switching power supply, a DA conversion module, a touch screen, a permanent magnet DC motor circuit board, a displacement sensor, a three-phase hybrid stepper motor driver whose motor control end is connected to an aluminum foil stepper motor, a two-phase hybrid stepper motor driver whose motor control end is connected to a cotton strip stepper motor, a main frequency converter whose motor control end is connected to a main motor, and a first proximity switch and a second proximity switch for detecting the rotation angle of a driving shaft and feeding back to the PLC controller. By adopting a PLC controller and a human-machine interface to control the nail foil machine, the production efficiency and product variety are improved, and the operation is simple, and ordinary operators can complete the production through simple settings.

Description

Technical Field

[0001] The invention relates to the field of automatic control technology, in particular to a special electrical control system for a nail foil machine. Background Art

[0002] Since the working principle of the nail foil machine is similar to that of the existing bag making machine, the existing control system of the nail foil machine usually uses a bag making machine controller. With the continuous improvement of the nail foil machine, the bag making machine controller can no longer meet the needs of the improved nail foil machine, so that the performance of the nail foil machine cannot reach the best, which is mainly reflected in: 1) The aluminum foil pulling speed and the cotton strip pulling speed in the existing controller cannot be fast enough, thus limiting its maximum speed; 2) The aluminum foil pulling speed and the cotton strip pulling speed cannot be set separately, and cannot be freely set according to needs; 3) The use and setting of the knife position detection signal in the existing controller are too complicated, and ordinary operators cannot debug it. Professional technicians must debug it, which affects production efficiency and manpower utilization; 4) The existing controller does not have a roll guide mode, which is inconvenient for the production of nail foil roll products, and requires manual human participation in the operation, affecting production efficiency.

[0003] Therefore, there is an urgent need in the art for a dedicated electrical control system that can be applied to a nail foil machine to address the deficiencies of existing controllers. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a special electrical control system for a nail foil machine, which controls the nail foil machine by adopting a PLC controller and a human-machine interface, thereby improving production efficiency and product variety, and is easy to operate, and ordinary operators can complete production through simple settings.

[0005] To achieve the above-mentioned purpose, the present invention provides a special electrical control system for a nail foil machine, wherein the nail foil machine comprises: a sliver discharge roller, a sliver rod, a first sliver roller, a second sliver roller, a first sliver traction roller and a second sliver traction roller which are sequentially arranged on the sliver feeding path; a discharge roller, a first feeding roller, a second feeding roller, a first guide roller, a material blocking rod, a second guide roller and a first felt plate which are sequentially arranged on the aluminum foil feeding path; a sliver punch and a heating block for processing the sliver into sliver sheets; a second felt plate, a first head traction roller, a second head traction roller, a first head guide roller, a second head guide roller, a knife wiping felt, a lower knife and an upper knife which are sequentially arranged on the sliver sheet path; and a driving shaft which respectively connects the sliver punch and the upper knife; wherein the special electrical control system comprises:

[0006] A PLC controller, whose live wire input terminal is connected to the live wire terminal of the UPS power supply through the power switch and the air switch, whose neutral wire input terminal is connected to the neutral wire terminal of the UPS power supply through the air switch, and whose ground wire terminal is grounded;

[0007] A 24V switching power supply, whose live input terminal, neutral input terminal and ground terminal are respectively connected to the live input terminal, neutral input terminal and ground terminal of the PLC controller, and whose output terminals are respectively a 24V output terminal and a 0V output terminal;

[0008] A 5V switching power supply, whose live input terminal, neutral input terminal and ground terminal are respectively connected to the live input terminal, neutral input terminal and ground terminal of the PLC controller, and whose output terminals are respectively a 5V output terminal and a 0V output terminal;

[0009] A DA conversion module, whose power input terminal is connected to the output terminal of the 24V switching power supply;

[0010] A touch screen, whose serial port is connected to the serial port of the PLC controller, and the power input terminal of the touch screen is connected to the 24V output terminal through a touch screen power switch;

[0011] A permanent magnet DC motor circuit board, a motor control end of which is connected to a feeding motor, and the feeding motor is used to drive the first feeding roller and the second feeding roller to rotate;

[0012] a displacement sensor, arranged at the material-blocking rod and electrically connected to the permanent-magnetic DC motor circuit board, for sensing the displacement of the material-blocking rod and feeding back the displacement to the permanent-magnetic DC motor circuit board;

[0013] A three-phase hybrid stepper motor driver, whose motor control end is connected to an aluminum foil stepper motor, the aluminum foil stepper motor is used to drive the first head traction roller and the second head traction roller to rotate, and the pulse input positive signal end and the direction input positive signal end of the three-phase hybrid stepper motor driver are connected to the 5V output end, the pulse input negative signal end of the three-phase hybrid stepper motor driver is connected to the first pulse output end of the PLC controller, and the direction input negative signal end of the three-phase hybrid stepper motor driver is connected to the first direction output end of the PLC controller;

[0014] A two-phase hybrid stepper motor driver, whose motor control end is connected to a sliver stepper motor, the sliver stepper motor is used to drive the first sliver traction roller and the second sliver traction roller to rotate, and the pulse input positive signal end and the direction input positive signal end of the two-phase hybrid stepper motor driver are connected to the 5V output end, the pulse input negative signal end of the two-phase hybrid stepper motor driver is connected to the second pulse output end of the PLC controller, and the direction input negative signal end of the two-phase hybrid stepper motor driver is connected to the second direction output end of the PLC controller;

[0015] A main frequency converter, whose motor control end is connected to a main motor, the main motor is used to drive the rotation of the driving shaft and the up and down movement of the upper knife and the sliver punch, and two of the control ends of the main frequency converter are connected to the normally open end of an intermediate relay, the coil end of the intermediate relay is connected between the frequency converter control end of the PLC controller and the 24V output end, and the other two control ends of the main frequency converter are connected to the output end of the DA conversion module;

[0016] A first proximity switch and a second proximity switch are arranged in parallel at the driving shaft and electrically connected to the PLC controller, and are used to detect the rotation angle of the driving shaft and feed back to the PLC controller.

[0017] In one embodiment of the present invention, the touch screen further includes a USB port, which is connected to a barcode scanner via a USB cable.

[0018] In one embodiment of the present invention, it further includes:

[0019] A roll guide rack, arranged at the discharge of the nail foil machine, for guiding the produced nail foil into rolls;

[0020] A roll guide rack proximity switch is arranged at the roll guide rack, and the output end of the roll guide rack proximity switch and the 0V output end of the 24V switching power supply are connected to the coil end of a roll guide relay;

[0021] A motor speed regulator, whose motor control end is connected to a roll guide motor, and a control end of the motor speed regulator is connected to the normally open end of the roll guide relay, for controlling the roll guide motor according to the signal of the roll guide frame proximity switch.

[0022] In one embodiment of the present invention, the setting buttons and parameters are displayed on the main monitoring interface of the touch screen, specifically including:

[0023] Length, used to set the length of each aluminum foil after cutting;

[0024] The cotton strip length is used to set the length of the cotton strip attached to each section of aluminum foil;

[0025] Set the speed to set the speed of producing nail foil.

[0026] Actual speed, used to display the speed of the nail foil actually produced;

[0027] Number of pieces per batch, used to set the production quantity of each batch;

[0028] Single batch count, used to show the quantity of this batch that has been produced;

[0029] Batch number, used to display the number of batches that have been produced;

[0030] Cumulative production, used to show the total quantity that has been produced;

[0031] Normal / debug switch button, used to set the device state, where it does not count in debug state and counts in normal state;

[0032] Whether to use the roll guide switch button is used to set whether to use the roll guide mode. When it is switched to yes, the roll guide mode is used, and nail foil rolls are produced at this time. After each roll of nail foil is produced, the machine automatically stops and continues to produce the next roll after pressing the start button; on the contrary, when it is switched to no, the roll guide mode is not used, and nail foil is produced at this time. The main motor can only stop rotating after pressing the stop button;

[0033] + button and - button, used to increase or decrease the set value;

[0034] Start / Stop button, used to start or stop the system;

[0035] The material pulling forward button and the material pulling reverse button are used to pull the material forward or reverse by inching mode;

[0036] Single clear button is used to clear the count of a single batch.

[0037] Batch Clear button is used to clear the number of batches that have been produced;

[0038] The total clear button is used to clear the single batch count and the number of batches that have been produced at the same time.

[0039] In one embodiment of the present invention, the PLC controller is programmed to trigger a buzzer alarm through a buzzer control terminal when the last five pieces of each batch are produced.

[0040] In one embodiment of the present invention, an advanced parameter setting button is also displayed on the main monitoring interface of the touch screen for entering an advanced parameter interface, and the advanced parameter interface includes:

[0041] Aluminum foil pulling speed, used to set the pulling speed of the aluminum foil stepping motor;

[0042] The sliver pulling speed is used to set the pulling speed of the sliver stepping motor;

[0043] The main drive coefficient is used to set the ratio of the nail foil production speed to the frequency of the main inverter;

[0044] Mainframe speed display, used to show the actual speed of producing nail foil;

[0045] The circumference of the traction roller is used to set the circumference of the first head traction roller and the second head traction roller;

[0046] The circumference of the sliver roller is used to set the circumference of the first sliver pulling roller and the second sliver pulling roller;

[0047] Maximum frequency, used to set the maximum frequency that the main inverter can output;

[0048] The circumference detection button is used to produce a nail foil with a length equal to the circumference of the traction roller by clicking it.

[0049] Compared with the prior art, the dedicated electrical control system for the nail foil machine provided by the present invention has at least the following advantages:

[0050] 1) The production efficiency of nail foil has been improved by replacing the traditional bag making machine controller with a PLC controller and human-machine interface;

[0051] 2) The aluminum foil pulling speed and cotton strip pulling speed can be set through the interface to make machine adjustment easier;

[0052] 3) The angle of rotation of the driving shaft is detected by the proximity switch, which simplifies the use of the tool position signal, makes it easier for operators to understand, and is convenient for debugging;

[0053] 4) By adding the roll guide mode, the product diversity is increased, and the production of nail foil roll products can be automatically realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0055] Figure 1 It is a schematic diagram of the structure of the nail foil machine assembly in one embodiment of the present invention;

[0056] Figure 2 This is a schematic diagram of a main control circuit of a dedicated electrical control system in one embodiment of the present invention;

[0057] Figure 3A and Figure 3B A schematic diagram of control wiring of a PLC controller in one embodiment of the present invention;

[0058] Figure 4 This is a wiring diagram of each motor in a nail foil machine in one embodiment of the present invention;

[0059] Figure 5 This is a circuit diagram of a roll guide assembly in one embodiment of the present invention;

[0060] Figure 6 is a schematic diagram of power supply wiring in one embodiment of the present invention;

[0061] Figure 7 This is a schematic diagram of the main monitoring interface of the control system in one embodiment of the present invention;

[0062] Figure 8 Schematic diagram of the advanced parameter interface of the control system in one embodiment of the present invention.

[0063] Explanation of the reference numerals: 1-sliver discharge roller; 2-sliver; 3-sliver rod; 4-first sliver roller; 5-sliver punch; 6-second felt plate; 7-second head traction roller; 8-second head guide roller; 9-upper knife; 10-knife wiping felt; 11-lower knife; 12-first head guide roller; 13-first head traction roller; 14-heating block; 15-first proximity switch; 16-second proximity switch; 17-first sliver traction roller; 18-second sliver traction roller; 19-driving shaft; 20, 21-magnet; 22-blocking rod; 23-displacement sensor; 24-discharge roller; 25-aluminum foil; 26-first feed roller; 27-second feed roller; 28-first guide roller; 29-second guide roller; 30-first felt Board; 31-second sliver roller; 32-sliver sheet; A1-PLC controller; A2-DA conversion module; V1-24V switching power supply; V2-5V switching power supply; HMI-touch screen; SA4-power switch; SA5-touch screen power switch; BZY1-permanent magnet DC motor circuit board; ZY1-feeding motor; U2-displacement sensor; BYG1-three-phase hybrid stepper motor driver; SSM1-two-phase hybrid stepper motor driver; PM1-aluminum foil stepper motor; PM2-sliver stepper motor; INV1-main inverter; M1-main motor; M2-guide roll motor; KA1-intermediate relay; KA2-guide roll relay; NS3-guide roll rack proximity switch; U3-motor speed regulator. DETAILED DESCRIPTION

[0064] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0065] Figure 1 FIG. 1 is a schematic diagram of the structure of a nail foil machine component in one embodiment of the present invention. Figure 1 As shown, this embodiment provides a dedicated electrical control system for a nail foil machine, wherein the nail foil machine includes:

[0066] The sliver discharge roller 1, the sliver rod 3, the first sliver roller 4 (sliver roller 1), the second sliver roller 31 (sliver roller 2), the first sliver pulling roller 17 (sliver pulling roller 1) and the second sliver pulling roller 18 (sliver pulling roller 2) are sequentially arranged on the feeding path of the sliver 2, wherein the first sliver pulling roller 17 (sliver pulling roller 1) and the second sliver pulling roller 18 (sliver pulling roller 2) are arranged in parallel;

[0067] The unloading roller 24, the first feeding roller 26 (feeding roller 1), the second feeding roller 27 (feeding roller 2), the first guide roller 28 (guide roller 1), the blocking rod 22, the second guide roller 29 (guide roller 2) and the first felt plate 30 (felt plate 1) are sequentially arranged on the feeding path of the aluminum foil 25, wherein the first feeding roller 26 (feeding roller 1) and the second feeding roller 27 (feeding roller 2) are arranged in parallel;

[0068] A sliver punch 5 and a heating block 14 for processing the sliver 2 into a sliver sheet 32;

[0069] The second felt plate 6 (felt plate 2), the first head traction roller 13 (head traction roller 1), the second head traction roller 7 (head traction roller 2), the first head guide roller 12 (head guide roller 1), the second head guide roller 8 (head guide roller 2), the wiping felt 10, the lower knife 11 and the upper knife 9 are sequentially arranged on the path of the cotton strip piece 32, wherein the first head traction roller 13 (head traction roller 1) and the second head traction roller 7 (head traction roller 2) are arranged in parallel, and the first head guide roller 12 (head guide roller 1) and the second head guide roller 8 (head guide roller 2) are arranged in parallel;

[0070] A driving shaft 19 is respectively connected to the sliver punch 5 and the upper knife 9; one end of the driving shaft 19 is also provided with two magnets, namely magnet 20 (magnet 1) and magnet 21 (magnet 2), which are distributed at different positions on the main shaft and are used to trigger the proximity switch signal.

[0071] Figure 2 FIG. 1 is a schematic diagram of a main control circuit of a dedicated electrical control system in one embodiment of the present invention. Figure 2 As shown, the dedicated electrical control system includes:

[0072] A PLC controller A1, whose live input terminal (pin L) is connected to the live terminal (Ld) of the UPS power supply through the power switch SA4 and the air switch QF4 (pins 1 and 2), and the neutral input terminal (pin N) is connected to the neutral terminal (Nd) of the UPS power supply through the air switch QF4 (pins 3 and 4), and the ground terminal (PE) is grounded; the PLC controller of this embodiment uses Delta PLC DVP32ES200T as an example, and other PLC models with similar functions can also be used in other embodiments, and the present invention does not limit the model of PLC control;

[0073] A 24V switching power supply V1, whose live input terminal (pin L), neutral input terminal (pin N) and ground terminal (PE) are respectively connected to the live input terminal (pin L), neutral input terminal (pin N) and ground terminal (PE) of the PLC controller, and whose output terminals are respectively a 24V output terminal and a 0V output terminal; the 24V switching power supply V1 is used to output a direct current (DC) 24V power supply to power other components;

[0074] A 5V switching power supply V2, whose live input terminal (pin L), neutral input terminal (pin N) and ground terminal (PE) are respectively connected to the live input terminal (pin L), neutral input terminal (pin N) and ground terminal (PE) of the PLC controller, and whose output terminals are respectively a 5V output terminal and a 0V output terminal; the 5V switching power supply V2 is used to output a direct current (DC) 5V power supply to power other components;

[0075] A DA conversion module A2 (digital-to-analog conversion module), whose power input terminal is connected to the output terminal of the 24V switching power supply V1; the DA conversion module A2 selected in this embodiment is powered by 24V;

[0076] A touch screen HMI, whose serial port COM1 is connected to the serial port COM3 of the PLC controller A1, and the power input terminal (24V pin) of the touch screen HMI is connected to the 24V output terminal of the 24V switching power supply V1 through a touch screen power switch SA5, and the 0V terminal of the touch screen HMI is connected to the 0V output terminal of the 24V switching power supply V1; the touch screen HMI model in this embodiment is MCGS7072Gi, but it is not limited, and other embodiments can use other models according to needs;

[0077] In this embodiment, the touch screen HMI further includes a USB port USB, which is connected to a barcode scanner SCAN1 via a USB cable.

[0078] Figure 3A and Figure 3B FIG. 1 is a control wiring diagram of a PLC controller in one embodiment of the present invention. Figure 3A and Figure 3BAs shown, the PLC controller A1 includes multiple control terminals, such as a first pulse output terminal Y0, a first direction output terminal Y1, a second pulse output terminal Y2, a second direction output terminal Y3, and a frequency converter control terminal Y10, which are used to output control signals to the motor, as well as control terminals for controlling sound and light signals such as a scanning start display light Y11, a scanning completion display light Y12, a weighing light Y13, and a buzzer Y17, and control terminals connected to multiple switch buttons such as a start signal X10, a stop signal X11, a collection button signal X12, an emergency stop switch signal X13, a weighing button signal X14, and a print button signal X15. The settings of each control terminal can be set according to actual needs, and the present invention does not limit it. The figure is only an illustrative example of this embodiment, and the following connection only explains the wiring of some control terminals. Figure 4 FIG. 1 is a schematic diagram of wiring of each motor in a nail foil machine in an embodiment of the present invention. Figure 4 As shown, the above-mentioned dedicated electrical control system also includes:

[0079] A permanent magnet DC motor circuit board BZY1, whose motor control terminal (H1, C2) is connected to a feeding motor ZY1, and the feeding motor ZY1 is used to drive the first feeding roller 26 (feeding roller 1) and the second feeding roller 27 (feeding roller 2) to rotate;

[0080] A displacement sensor U2 (i.e. Figure 1 23), which is arranged at the stop rod 22 and electrically connected to the permanent magnet DC motor circuit board BZY1 (IN pin and -12V pin), is used to sense the displacement of the stop rod 22 and feed back to the permanent magnet DC motor circuit board BZY1; in addition, a potentiometer RP1 is also connected between the 4th, 5th and 6th pins of the permanent magnet DC motor circuit board BZY1 to adjust the control potential. Since this is a conventional setting of the permanent magnet DC motor circuit board, the present invention will not repeat it;

[0081] A three-phase hybrid stepper motor driver BYG1, whose motor control terminals (A, B, C) are connected to an aluminum foil stepper motor PM1, and the aluminum foil stepper motor PM1 is used to drive the first head traction roller 13 (head traction roller 1) and the second head traction roller 7 (head traction roller 2) to rotate, and the pulse input positive signal terminal (CP+) and the direction input positive signal terminal (CM+) of the three-phase hybrid stepper motor driver BYG1 are connected to the 5V output terminal of the 5V switching power supply V2, and the pulse input negative signal terminal (CP-) of the three-phase hybrid stepper motor driver BYG1 is connected to the first pulse output terminal (Y0 foot, i.e. Figure 3B The direction input negative signal terminal (CM-) of the three-phase hybrid stepper motor driver BYG1 is connected to the first direction output terminal (Y1 foot, i.e. Figure 3B The middle direction 1) is used to control the operation of the aluminum foil stepper motor PM1 according to the pulse signal and direction signal output by the PLC controller A1;

[0082] A two-phase hybrid stepper motor driver SSM1, whose motor control end (A+, A-, B+, B-) is connected to a sliver stepper motor PM2, and the sliver stepper motor PM2 is used to drive the first sliver traction roller 17 (sliver traction roller 1) and the second sliver traction roller 18 (sliver traction roller 2) to rotate, and the pulse input positive signal end (PUL+) and the direction input positive signal end (DIR+) of the two-phase hybrid stepper motor driver SSM1 are connected to the 5V output end of the 5V switching power supply V2, and the pulse input negative signal end (PUL-) of the two-phase hybrid stepper motor driver SSM1 is connected to the second pulse output end (Y2 foot, i.e. Figure 3B The direction input negative signal terminal (DIR-) of the two-phase hybrid stepper motor driver SSM1 is connected to the second direction output terminal (Y3 pin, i.e. Figure 3B In the direction 2), it is used to control the operation of the sliver stepper motor PM2 according to the pulse signal and direction signal output by the PLC controller A1; the power supply of the two-phase hybrid stepper motor driver SSM1 adopts 24V power supply, that is, it is connected to the 24V switching power supply V1;

[0083] A main inverter INV1, whose motor control terminals (U, V, W) are connected to a main motor M1, which is used to drive the driving shaft 19 to rotate and the upper knife 9 and the sliver punch 5 to move up and down, and two of the control terminals (CM, X2) of the main inverter INV1 are connected to the normally open terminal (14, 13 pins) of an intermediate relay KA1, and the coil terminal (A1, A2) of the intermediate relay KA1 is connected to the inverter control terminal (Y10 pin, i.e. Figure 3B The other two control terminals (CM, FU2) of the main inverter INV1 are connected to the output terminals (V-, V+) of the DA conversion module A2;

[0084] A first proximity switch 15 (proximity switch 1) and a second proximity switch 16 (proximity switch 2) are arranged in parallel at the driving shaft 19 and are electrically connected to the PLC controller A1, and are used to detect the rotation angle of the driving shaft 19 and feed back to the PLC controller A1. Since the rotation angle of the main shaft 19 in this embodiment represents the position relationship between the upper knife 9 and the sliver punch 5, the signals of the two proximity switches can be represented by the low knife position and the high knife position, respectively, such as Figure 3AThe first proximity switch 15 (proximity switch 1) and the second proximity switch 16 (proximity switch 2) can be the signals of the low knife position NS1 and the high knife position NS2 respectively, and are respectively connected to the knife position signal receiving end (X0, X1) of the PLC controller A1, and are used to judge the position of the upper knife 9 and the sliver punch 5 according to the knife position signal. For example, when the high knife position signal is detected, the material is allowed to be pulled. When the low knife position signal is detected after pressing the stop button, the main inverter INV1 and the main motor M1 are stopped, so that the upper knife can inertialy stop at a high position. In other embodiments, other signal setting methods can also be used, such as direction up, direction down, etc., which are not limited by the present invention. The first proximity switch 15 (proximity switch 1) and the second proximity switch 16 (proximity switch 2) in this embodiment are powered by 24V. In other embodiments, the power supply method can be set according to the actual model, which is not limited by the present invention.

[0085] Through the setting of the above control circuit, when the nail foil machine is running, the feeding motor ZY1 drives the first feeding roller 26 (feeding roller 1) and the second feeding roller 27 (feeding roller 2) to rotate, and the aluminum foil 25 is pulled out from the discharge roller 24; the aluminum foil stepping motor PM1, as a pulling motor, drives the first head pulling roller 13 (head pulling roller 1) and the second head pulling roller 7 (head pulling roller 2) to rotate, and the pulled aluminum foil 25 is fed into the space between the first head guide roller 12 (head guide roller 1) and the second head guide roller 8 (head guide roller 2) through the first guide roller 28 (guide roller 1), the material blocking rod 22, the second guide roller 29 (guide roller 2) and the first felt plate 30 (felt plate 1), the heating block 14, and the second felt plate 6 (felt plate 2); the sliver stepping motor PM2 drives the first sliver pulling roller 17 (sliver pulling roller 1) and the second sliver pulling roller 7 (sliver pulling roller 2) to rotate. The guide roller 18 (cotton strip drawing roller 2) rotates, and the traction cotton strip 2 is released from the cotton strip feeding roller 1, and is sent to between the cotton strip punch 5 and the heating block 14 through the cotton strip rod 3, the first cotton strip roller 4 (cotton strip roller 1), and the second cotton strip roller 31 (cotton strip roller 2); the driving shaft 19 drives the driving shaft 19 to rotate, and the driving shaft 19 drives the cotton strip punch 5 to punch the cotton strip 2 into cotton strip pieces 32. In addition, due to the heating of the heating block 14, the cotton strip pieces 32 can stick to the aluminum foil 25 and move with the aluminum foil 25; at this time, the first head guide roller 12 (head guide roller 1) and the second head guide roller 8 (head guide roller 2) drive the aluminum foil 25 attached with the cotton strip pieces 32 to be sent between the upper knife 9 and the lower knife 11; the driving shaft 19 also drives the upper knife 9 to move toward the lower knife 11 through the wiping felt 10, thereby cutting the aluminum foil 25 attached with the cotton strip pieces 32 into nail foil.

[0086] The above-mentioned control system also detects the position of the material blocking rod 22 through the displacement sensor 23, controls the speed of the feeding motor ZY1, and thus controls the feeding speed of the first feeding roller 26 (feeding roller 1) and the second feeding roller 27 (feeding roller 2); the first proximity switch 15 (proximity switch 1) and the second proximity switch 16 (proximity switch 2) detect the rotation angle of the main shaft 19, and the rotation angle of the main shaft 19 represents the position of the upper knife 9 and the sliver punch 5. The control system determines the position of the upper knife 9 and the sliver punch 5 according to the switch signals of the first proximity switch 15 (proximity switch 1) and the second proximity switch 16 (proximity switch 2), thereby controlling the sliver stepper motor PM2 to transport the sliver 5, and controlling the aluminum foil stepper motor PM1 to pull the aluminum foil 25.

[0087] Figure 5 FIG. 1 is a circuit diagram of a roll guide assembly in one embodiment of the present invention. Figure 5 As shown, in this embodiment, it also includes:

[0088] A roll guide rack (not shown), which is arranged at the discharge of the nail foil machine and is used to guide the produced nail foil into rolls;

[0089] A roll guide rack proximity switch NS3 is arranged at the roll guide rack, and the output end (pin 3) of the roll guide rack proximity switch NS3 and the 0V output end of the 24V switching power supply V1 are connected to the coil ends (A1, A2) of a roll guide relay KA2; the roll guide rack proximity switch NS3 selected in this embodiment is powered by 24V, and in other embodiments, the specific power supply mode can be set according to the model of the roll guide rack proximity switch NS3, and the present invention is not limited to this;

[0090] A motor speed regulator U3, whose motor control terminals (1, 2, N) are connected to a roll guide motor M2, which is used to drive the roll guide to rotate, and a control terminal AC of the motor speed regulator U3 is connected to the normally open terminal (pin 5) of the roll guide relay KA2, and the other normally open terminal (pin 9) of the roll guide relay KA2 is connected to the neutral line (N11), which is used to control the roll guide motor M2 according to the signal of the roll guide frame proximity switch NS3.

[0091] Figure 6 FIG. 1 is a schematic diagram of power connection in an embodiment of the present invention. Figure 6As shown, the power supply of this embodiment adopts ordinary AC power (220V50Hz), and its live wire end (L end) is connected to the main contactor KM1 through the air switch QF1, one of the branches (L23) is used to power the three-phase hybrid stepper motor driver BYG1 and the motor speed regulator U3, and the other one is connected to an air switch QF3, which is used to power the main inverter INV1 and then power the permanent magnet DC motor circuit board BZY1 through the feeding switch SA3; its neutral wire end (N end) is connected to the neutral wire access end of the permanent magnet DC motor circuit board BZY1, the three-phase hybrid stepper motor driver BYG1, the main inverter INV1 and the motor speed regulator U3 through the air switch QF1 (specifically, it is connected through the normally open end of the coil guide relay KA2), and an ammeter PA1 and a voltmeter PV1 can also be set on the power line. The wiring of the power supply part is a conventional wiring method in this field, and the present invention will not be repeated.

[0092] Figure 7 FIG. 1 is a schematic diagram of the main monitoring interface of the control system in one embodiment of the present invention. Figure 7 As shown, in this embodiment, the main monitoring interface of the touch screen HMI displays setting buttons and parameters for setting and displaying various control parameters of the PLC controller A1, specifically including:

[0093] Length (in millimeters), used to set the length of each section of aluminum foil after cutting;

[0094] Sliver length (in millimeters), used to set the length of the sliver attached to each section of aluminum foil;

[0095] Set speed (pcs / min) to set the speed of producing nail foil.

[0096] Actual speed (pieces / minute), used to display the speed of the nail foils actually produced;

[0097] Number of pieces per batch, used to set the production quantity of each batch;

[0098] In this embodiment, the PLC controller A1 can also preset the program to be programmed to generate a buzzer control terminal ( Figure 3B Y17 in the figure triggers the buzzer H1 to alarm, thereby achieving an alarm prompt sound at the same time.

[0099] Single batch count, used to show the quantity of this batch that has been produced;

[0100] Batch number, used to display the number of batches that have been produced;

[0101] Cumulative production, used to show the total quantity that has been produced;

[0102] Normal / debug switch button, used to set the device status, where no counting occurs in debug status, and counting occurs in normal status;

[0103] The roll-guiding switching button is used to set whether to use the roll-guiding mode. When it is switched to yes, the roll-guiding mode is used, and nail foil rolls are produced. After each roll of nail foil is produced, the machine will automatically stop and continue to produce the next roll after pressing the start button. Conversely, when it is switched to no, the roll-guiding mode is not used, and nail foil is produced. The main motor M1 can only stop rotating after pressing the stop button. In the roll-guiding mode, the position of the roll-guiding rack material blocking rod can be obtained according to the sensing signal of the roll-guiding rack proximity switch NS3. When it is in a low position, the roll-guiding motor is controlled to rotate, and when it is in a high position, the roll-guiding motor is controlled to stop, thereby coordinating the roll-guiding speed of the roll-guiding motor and the pulling speed of the aluminum foil pulling motor.

[0104] The + button and the - button are used to increase or decrease the set value; for example, each press increases or decreases the speed by 5 per minute, etc.

[0105] The start / stop button can be a large button set in the lower left corner of the screen. It is green in the start state and red in the stop state, and is used to start or stop the system;

[0106] The material pulling forward button and the material pulling reverse button are used to pull the material forward or reverse by inching mode;

[0107] Single clear button is used to clear the count of a single batch.

[0108] Batch Clear button is used to clear the number of batches that have been produced;

[0109] The total clear button is used to clear the single batch count and the number of batches that have been produced at the same time.

[0110] Figure 8 FIG. 1 is a schematic diagram of an advanced parameter interface of a control system in an embodiment of the present invention. Figure 8 As shown, in this embodiment, an advanced parameter setting button is also displayed on the main monitoring interface of the touch screen HMI, which is used to enter the advanced parameter interface, and the advanced parameter interface includes:

[0111] Aluminum foil pulling speed (Hz), used to set the pulling speed of the aluminum foil stepper motor PM1;

[0112] Sliver pulling speed (Hz), used to set the pulling speed of the sliver stepper motor PM2;

[0113] The main engine transmission coefficient is used to set the ratio of the nail foil production speed to the frequency of the main inverter INV1;

[0114] Mainframe speed display, used to show the actual speed of producing nail foil;

[0115] The circumference of the pulling roller (mm) is used to set the circumference of the first head pulling roller 13 (head pulling roller 1) and the second head pulling roller 7 (head pulling roller 2); the two head pulling rollers can be the same pulling rollers;

[0116] Sliver roller circumference (mm), used to set the circumference of the first sliver pulling roller 17 (sliver pulling roller 1) and the second sliver pulling roller 18 (sliver pulling roller 2); the two sliver pulling rollers can be the same pulling rollers;

[0117] Maximum frequency (Hz), used to set the maximum frequency that the main inverter INV1 can output;

[0118] The circumference detection button is used to produce a nail foil with a length equal to the circumference of the traction roller by clicking it. The circumference of the traction roller of the head can be obtained by measuring the nail foil, and this setting can be used for debugging.

[0119] The parameter settings on the main monitoring interface of this embodiment can be used for production operations by ordinary operators, for example. The interface display is simple and the settings are convenient. The advanced parameter interface can be used in the machine debugging phase or for debugging by senior technicians. In this way, ordinary operators can meet production needs without performing complicated operations during production.

[0120] The dedicated electrical control system of the nail foil machine provided by the present invention replaces the traditional bag making machine controller by adopting a PLC controller (Delta PLCDVP32ES200T) and a human-machine interface (MCGS7072Gi), thereby increasing the production efficiency of the nail foil from 170 pieces / minute to 200 pieces / minute.

[0121] The present invention also makes it easier to adjust the machine by setting the aluminum foil pulling speed and the cotton strip pulling speed; the angle of rotation of the driving shaft is detected by the proximity switch, which simplifies the use of the knife position signal, making it easier for operators to understand and convenient for debugging. At the same time, by adding a roll guide mode selection button, the production of nail foil roll products can be realized.

[0122] Those skilled in the art can understand that the accompanying drawings are only schematic diagrams of an embodiment, and the modules or processes in the accompanying drawings are not necessarily required to implement the present invention.

[0123] Those skilled in the art can understand that the modules in the device in the embodiment can be distributed in the device in the embodiment according to the description of the embodiment, or can be changed accordingly and located in one or more devices different from the embodiment. The modules in the above embodiment can be combined into one module, or can be further divided into multiple sub-modules.

[0124] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A special electrical control system for a nail foil machine, wherein: The nail foil machine comprises: a sliver discharge roller, a sliver rod, a first sliver roller, a second sliver roller, a first sliver traction roller and a second sliver traction roller which are sequentially arranged on the sliver feeding path; a discharge roller, a first feeding roller, a second feeding roller, a first guide roller, a blocking rod, a second guide roller and a first felt plate which are sequentially arranged on the aluminum foil feeding path; a sliver punch and a heating block for processing the sliver into sliver sheets; a second felt plate, a first head traction roller, a second head traction roller, a first head guide roller, a second head guide roller, a knife wiping felt, a lower knife and an upper knife which are sequentially arranged on the sliver sheet path; and a driving shaft respectively connecting the sliver punch and the upper knife; characterized in that the dedicated electrical control system comprises: A PLC controller, whose live wire input terminal is connected to the live wire terminal of the UPS power supply through the power switch and the air switch, whose neutral wire input terminal is connected to the neutral wire terminal of the UPS power supply through the air switch, and whose ground wire terminal is grounded; A 24V switching power supply, whose live input terminal, neutral input terminal and ground terminal are respectively connected to the live input terminal, neutral input terminal and ground terminal of the PLC controller, and whose output terminals are respectively a 24V output terminal and a 0V output terminal; A 5V switching power supply, whose live input terminal, neutral input terminal and ground terminal are respectively connected to the live input terminal, neutral input terminal and ground terminal of the PLC controller, and whose output terminals are respectively a 5V output terminal and a 0V output terminal; A DA conversion module, whose power input terminal is connected to the output terminal of the 24V switching power supply; A touch screen, whose serial port is connected to the serial port of the PLC controller, and the power input terminal of the touch screen is connected to the 24V output terminal through a touch screen power switch; A permanent magnet DC motor circuit board, a motor control end of which is connected to a feeding motor, and the feeding motor is used to drive the first feeding roller and the second feeding roller to rotate; a displacement sensor, arranged at the material-blocking rod and electrically connected to the permanent-magnetic DC motor circuit board, for sensing the displacement of the material-blocking rod and feeding back the displacement to the permanent-magnetic DC motor circuit board; A three-phase hybrid stepper motor driver, whose motor control end is connected to an aluminum foil stepper motor, the aluminum foil stepper motor is used to drive the first head traction roller and the second head traction roller to rotate, and the pulse input positive signal end and the direction input positive signal end of the three-phase hybrid stepper motor driver are connected to the 5V output end, the pulse input negative signal end of the three-phase hybrid stepper motor driver is connected to the first pulse output end of the PLC controller, and the direction input negative signal end of the three-phase hybrid stepper motor driver is connected to the first direction output end of the PLC controller; A two-phase hybrid stepper motor driver, whose motor control end is connected to a sliver stepper motor, the sliver stepper motor is used to drive the first sliver traction roller and the second sliver traction roller to rotate, and the pulse input positive signal end and the direction input positive signal end of the two-phase hybrid stepper motor driver are connected to the 5V output end, the pulse input negative signal end of the two-phase hybrid stepper motor driver is connected to the second pulse output end of the PLC controller, and the direction input negative signal end of the two-phase hybrid stepper motor driver is connected to the second direction output end of the PLC controller; A main frequency converter, whose motor control end is connected to a main motor, the main motor is used to drive the rotation of the driving shaft and the up and down movement of the upper knife and the sliver punch, and two of the control ends of the main frequency converter are connected to the normally open end of an intermediate relay, the coil end of the intermediate relay is connected between the frequency converter control end of the PLC controller and the 24V output end, and the other two control ends of the main frequency converter are connected to the output end of the DA conversion module; A first proximity switch and a second proximity switch are arranged in parallel at the driving shaft and electrically connected to the PLC controller, and are used to detect the rotation angle of the driving shaft and feed back to the PLC controller.

2. The dedicated electrical control system for the nail foil machine according to claim 1, characterized in that: The touch screen also includes a USB port, which is connected to a barcode scanner via a USB cable.

3. The dedicated electrical control system for the nail foil machine according to claim 1, characterized in that: Also includes: A roll guide rack, arranged at the discharge of the nail foil machine, for guiding the produced nail foil into rolls; A roll guide rack proximity switch is arranged at the roll guide rack, and the output end of the roll guide rack proximity switch and the 0V output end of the 24V switching power supply are connected to the coil end of a roll guide relay; A motor speed regulator, whose motor control end is connected to a roll guide motor, and a control end of the motor speed regulator is connected to the normally open end of the roll guide relay, for controlling the roll guide motor according to the signal of the roll guide frame proximity switch.

4. The dedicated electrical control system for the nail foil machine according to claim 3, characterized in that: The main monitoring interface of the touch screen displays setting buttons and parameters, including: Length, used to set the length of each aluminum foil after cutting; The cotton strip length is used to set the length of the cotton strip attached to each section of aluminum foil; Set speed, used to set the speed of producing nail foil; Actual speed, used to display the speed of the nail foil actually produced; Number of pieces per batch, used to set the production quantity of each batch; Single batch count, used to show the quantity of this batch that has been produced; Batch number, used to display the number of batches that have been produced; Cumulative production, used to show the total quantity that has been produced; Normal / debug switch button, used to set the device state, where it does not count in debug state and counts in normal state; Whether to use the roll guide switch button is used to set whether to use the roll guide mode. When it is switched to yes, the roll guide mode is used, and nail foil rolls are produced at this time. After each roll of nail foil is produced, the machine automatically stops and continues to produce the next roll after pressing the start button; on the contrary, when it is switched to no, the roll guide mode is not used, and nail foil is produced at this time. The main motor can only stop rotating after pressing the stop button; + button and - button, used to increase or decrease the set value; Start / Stop button, used to start or stop the system; The material pulling forward button and the material pulling reverse button are used to pull the material forward or reverse by inching mode; Single clear button, used to clear the count of a single batch; Batch Clear button is used to clear the number of batches that have been produced; The total clear button is used to clear the single batch count and the number of batches that have been produced at the same time.

5. The dedicated electrical control system for the nail foil machine according to claim 4, characterized in that: The PLC controller is programmed to trigger a buzzer alarm through the buzzer control terminal when the last 5 pieces of each batch are produced.

6. The dedicated electrical control system for the nail foil machine according to claim 4, characterized in that: The main monitoring interface of the touch screen also displays an advanced parameter setting button for entering the advanced parameter interface, which includes: Aluminum foil pulling speed, used to set the pulling speed of the aluminum foil stepping motor; The sliver pulling speed is used to set the pulling speed of the sliver stepping motor; The main drive coefficient is used to set the ratio of the nail foil production speed to the frequency of the main inverter; Mainframe speed display, used to show the actual speed of producing nail foil; The circumference of the traction roller is used to set the circumference of the first head traction roller and the second head traction roller; The circumference of the sliver roller is used to set the circumference of the first sliver pulling roller and the second sliver pulling roller; Maximum frequency, used to set the maximum frequency that the main inverter can output; The circumference detection button is used to produce a nail foil with a length equal to the circumference of the traction roller by clicking it.

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