Eight-path signal doubling device for cigarette packaging equipment

Abstract

The utility model provides an eight-path signal doubling device for cigarette packaging equipment, which is characterized in that a power supply safety isolation conversion circuit, an eight-path input isolation conversion circuit connected with the power supply safety isolation conversion circuit, an eight-path input selection circuit, a signal processing circuit and two paths of reverse output isolation circuits are integrally mounted on a signal control panel; the input end of the eight-way input isolation conversion circuit is connected with an external input signal terminal, the input end of the signal processing circuit is communicated with the eight-way input isolation conversion circuit and the eight-way input selection circuit, and the output end of the eight-way input isolation conversion circuit is communicated with the input ends of the two-way reverse output isolation circuit. According to the utility model, the wiring process of external equipment signal wires is simplified, and the circuit layout is optimized; mutual interference among different devices in daily production is reduced, the maintenance efficiency of the devices is improved, and the doubling device has the advantages of being good in heat dissipation, small in size, safe in protection and selectable in channel.

Description

Technical Field

[0001] The utility model belongs to the technical field of quality inspection of cigarette packaging equipment, and particularly relates to an eight-way signal combiner for cigarette packaging equipment. Background Technique

[0002] As the main packaging model of our factory, the GDX1 / 2 packaging unit often needs to be equipped with external auxiliary equipment to meet the production requirements of the workshop due to its long service life. However, since these external auxiliary equipment come from different manufacturers and are installed at different times, it often happens that multiple external equipment manufacturers share the same signal line of the GDX1 / 2 packaging unit. This not only leads to frequent repeated wiring and circuit modification, but also makes the construction process complicated, intensifies the mutual interference problem between different equipment during daily production, and makes troubleshooting extremely difficult. Therefore, it is necessary to make improvements according to the workshop requirements. Content of the Utility Model

[0003] The technical problem solved by the utility model is to provide an eight-way signal combiner for cigarette packaging equipment. The eight-way input isolation conversion circuit is connected to the external input signal terminal, and the signal processing circuit judges the on-off of the external signal according to the level state output by the eight-way input isolation conversion circuit and processes the received signal in combination with the channels shielded by the eight-way input selection circuit. Then, the received signal is amplified and output by the two-way reverse output isolation circuit, which solves the problems of complicated construction process and mutual interference between equipment caused by repeated wiring and frequent circuit modification of external equipment, simplifies the wiring process of the signal lines of external equipment, and optimizes the circuit layout; reduces the mutual interference between different equipment during daily production, improves the equipment maintenance efficiency, and the combiner has the advantages of good heat dissipation, small volume, safety protection, and selectable channels.

[0004] The technical solution adopted by the utility model: An eight-way signal combiner for cigarette packaging equipment includes two safety bases arranged in parallel and a signal control board fixed at both ends of the bottom surface on the corresponding safety bases. The signal control board is integrally installed with a power supply safety isolation conversion circuit, an eight-way input isolation conversion circuit connected to the power supply safety isolation conversion circuit, an eight-way input selection circuit, a signal processing circuit, and a two-way reverse output isolation circuit. The input end of the eight-way input isolation conversion circuit is connected to the external input signal terminal, and the input end of the signal processing circuit is connected to the eight-way input isolation conversion circuit and the eight-way input selection circuit. The signal processing circuit judges the on-off of the external signal according to the level state output by the eight-way input isolation conversion circuit and processes and outputs the received signal in combination with the channels shielded by the eight-way input selection circuit. The output end of the eight-way input isolation conversion circuit is connected to the input end of the two-way reverse output isolation circuit, and the received signal is amplified and output by the two-way reverse output isolation circuit.

[0005] Among them, the power supply safety isolation conversion circuit includes a power supply module U2 connected to a power supply terminal U15 and used to convert the input wide voltage of 18V to 36V into a 5V to 1A DC power supply. The 2nd pin of the power supply terminal U15 is connected to the 2nd pin of the power supply module U2, and a power inductor L1, a Schottky diode D1 and a self - restoring fuse F1 for forming an anti - reverse connection and short - circuit protection circuit are connected in series between the 2nd pin of the power supply terminal U15 and the 2nd pin of the power supply module U2. The 1st pin of the power supply terminal U15 is connected to the 1st pin of the power supply module U2. A capacitor C2 and an electrolytic capacitor C16, which are located on the input side of the power inductor L1 and form an LC filter circuit with the power inductor L1, and a capacitor C1 and an electrolytic capacitor C3 located on the output side of the power inductor L1 are connected in parallel between the 1st pin and the 2nd pin of the power supply terminal U15. A spot - inspection capacitor C4 for ensuring the stability of the input voltage is connected in parallel between the 5th pin and the 3rd pin of the power supply module U2. The 5V output power supply of the 5th pin of the power supply module U2 is electrically connected to an eight - way input isolation conversion circuit, a signal processing circuit and two - way reverse - output isolation circuits, and the power supply terminal U15 is electrically connected to an eight - way input selection circuit.

[0006] Further, the structures of the eight - way input isolation conversion circuits are exactly the same, and the input isolation conversion circuit uses an opto - coupler module one to isolate and convert the input signal into an internal - circuit input signal.

[0007] Further, one of the input isolation conversion circuits includes an opto - coupler module one U5. The 1st pin of the opto - coupler module one U5 is connected in series with a resistor R1 and connected to an input signal terminal. The 2nd pin of the opto - coupler module one U5 is connected in series with a light - emitting diode LED1 to the input negative pole VIN - of the power supply safety isolation conversion circuit, and a resistor R2 and a capacitor C5 are connected in parallel between the 1st pin and the 2nd pin of the opto - coupler module one U5 and form an LC filter circuit. The 4th pin of the opto - coupler module one U5 is connected to the 5V output power supply of the power supply safety isolation conversion circuit through a pull - up resistor R19, and the 3rd pin of the opto - coupler module one U5 is connected to GND through a pull - down resistor R18. The 3rd pin of the opto - coupler module one U5 is connected to the signal processing circuit, and a logic - gate chip U4 in the signal processing circuit judges the external signal according to the level state of the 3rd pin of the opto - coupler module one U5.

[0008] Further, the eight-way input selection circuit includes a switch SW1 with an eight-bit DIP switch for selecting the number of input signal channels. One end of the switch SW1 is connected to the input port of the logic gate chip U4 in the signal processing circuit, and the other end of the switch SW1 is connected to the 5V output power supply of the power safety isolation conversion circuit through a pull-up resistor network R59. The DIP switch in the switch SW1 shorts the pin 3 and pin 4 of the optocoupler module in the corresponding input isolation conversion circuit to shield the signal of the corresponding signal input channel.

[0009] Further, the signal processing circuit uses a logic gate chip U4 for signal processing, and the Y output pin and Y# output pin of the logic gate chip U4 are connected to the input ends of two reverse output isolation circuits.

[0010] Further, the structures of the two reverse output isolation circuits are exactly the same. Both use an optocoupler module two to isolate the output signal of the logic gate chip U4 in the signal processing circuit and drive a P-MOS transistor to control the output signal.

[0011] Further, one of the reverse output isolation circuits includes an optocoupler module two U13. The pin 4 of the optocoupler module two U13 is connected to the G pole of the P-MOS transistor Q1, and a resistor R46 is connected in series between the pin 4 of the optocoupler module two U13 and the G pole of the P-MOS transistor Q1 and connected to a zener diode ZD1 and a resistor R45 to connect to the 24V power supply of the power safety isolation conversion circuit. The pin 3 of the optocoupler module two U13 is connected to GND through a resistor R44; the pin 1 of the optocoupler module two U13 is connected to the 5V output power supply of the power safety isolation conversion circuit through a pull-up resistor R42, and the pin 2 of the optocoupler module two U13 is connected to the logic gate chip U4 in the signal processing circuit; the S pole of the P-MOS transistor Q1 is connected to the VIN+ of the power safety isolation conversion circuit, and a resistor R50 and a capacitor C14 connected between the S pole and the D pole of the P-MOS transistor Q1 form an RC protection circuit for protecting the P-MOS transistor Q1; the D pole of the P-MOS transistor Q1 is pulled down to GND through a resistor R47, and a resistor R49 and an LED9 connected in series at both ends of the resistor R47 form an output display circuit.

[0012] Further, the signal control board is made by a double-sided board manufacturing process, and its size is 60mm to 80mm.

[0013] Further, the safety base is made of a PC material that meets the TS35-DIN rail mounting standard at the bottom, and the overall size of the safety base is 80.80mm × 17.5mm × 15mm. Clips made of PA nylon material are provided at both the front and rear ends of the safety base.

[0014] Advantages of the present utility model compared with the prior art:

[0015] 1. This technical solution is connected to an external input signal terminal through an eight-channel input isolation conversion circuit. The signal processing circuit determines the on / off state of the external signal based on the level state output by the eight-channel input isolation conversion circuit, and processes the received signal in combination with the channels shielded by the eight-channel input selection circuit. Then, the received signal is amplified and output by two reverse output isolation circuits, which solves the problems of complex construction process and mutual interference between devices caused by repeated wiring of external devices and frequent line modification, simplifies the wiring process of the signal lines of external devices, and optimizes the line layout.

[0016] 2. The design of the power supply safety isolation conversion circuit in this technical solution can avoid the phenomena of reverse power connection, overload, and short circuit during use, ensuring the stability, safety, and reliability of the power supply.

[0017] 3. The eight-input selection circuit designed in this technical solution can select the number of channels through a DIP switch, adapt to different numbers of signal inputs, and has a wide application range.

[0018] 4. The safety base in this technical solution is made of PC material, ensuring high flame retardancy and insulation, guaranteeing the safety of this device. It is designed to be small in size, and its base setting conforms to the TS35-DIN rail installation standard, making it extremely easy to install.

[0019] 5. This technical solution reduces the mutual interference between different devices in daily production, improves the equipment maintenance efficiency, and the wire combiner has the advantages of good heat dissipation, small size, safety protection, and selectable channels. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the present utility model;

[0021] Figure 2 is a circuit diagram of the power supply safety isolation conversion circuit of the present utility model;

[0022] Figure 3 is a circuit diagram of the eight-channel input isolation conversion circuit of the present utility model;

[0023] Figure 4 is a circuit diagram of the eight-channel input selection circuit of the present utility model;;

[0024] Figure 5 is a circuit diagram of the signal processing circuit of the present utility model;

[0025] Figure 6 is a circuit diagram of the two reverse output isolation circuits of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The following will be combined with the embodiments of the present utility model Figure 1-6, the technical solutions in the embodiments of the present utility model are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0027] It should be noted that in this article, unless otherwise stated, it should be understood that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 a limitation to the present invention. In addition, terms such as "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0028] In this article, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0029] An eight-way signal parallelizer for cigarette packaging equipment, such as Figure 1-6As shown in the figure, it includes two safety bases 1 arranged in parallel and a signal control board 2 with both ends of the bottom surface fixed to the corresponding end safety bases 1. An electrical safety isolation conversion circuit 3, an eight-way input isolation conversion circuit 4 connected to the electrical safety isolation conversion circuit 3, an eight-way input selection circuit 5, a signal processing circuit 6, and two-way reverse output isolation circuits 7 are integrally installed on the signal control board 2. The input ends of the eight-way input isolation conversion circuits 4 are connected to external input signal terminals, and the input end of the signal processing circuit 6 is communicated with the eight-way input isolation conversion circuits 4 and the eight-way input selection circuit 5. The signal processing circuit 6 processes and outputs the received signal while judging the on / off state of the external signal according to the level state output by the eight-way input isolation conversion circuits 4 and combining the channels shielded by the eight-way input selection circuit 5. The output ends of the eight-way input isolation conversion circuits 4 are communicated with the input ends of the two-way reverse output isolation circuits 7, and the two-way reverse output isolation circuits 7 amplify and output the received signal. In the above structure, by connecting the eight-way input isolation conversion circuits 4 to the external input signal terminals, and the signal processing circuit 6 processes the received signal while judging the on / off state of the external signal according to the level state output by the eight-way input isolation conversion circuits 4 and combining the channels shielded by the eight-way input selection circuit 5, and then the two-way reverse output isolation circuits 7 amplify and output the received signal, the problems of complex construction process and mutual interference between devices caused by repeated wiring of external devices and frequent modification of circuits are solved, the wiring process of the signal lines of the external devices is simplified, and the circuit layout is optimized;

[0030] As Figure 2As shown in the figure, the specific connection structure of the power supply safety isolation conversion circuit 3 is as follows: The power supply safety isolation conversion circuit 3 includes a power supply module U2 connected to the power supply terminal U15 and used to convert the input wide voltage of 18V to 36V into a 5V to 1A DC power supply. Among them, the power supply module U2 adopts the VRB2405YMD-6WR3 DC-DC power supply module. The 2nd pin of the power supply terminal U15 is connected to the 2nd pin of the power supply module U2, and a power inductor L1, a Schottky diode D1 and a self-recovery fuse F1 used to form an anti-reverse connection and short-circuit protection circuit are connected in series between the 2nd pin of the power supply terminal U15 and the 2nd pin of the power supply module U2. The 1st pin of the power supply terminal U15 is connected to the 1st pin of the power supply module U2. A capacitor C2 and an electrolytic capacitor C16 located on the input side of the power inductor L1 and forming an LC filter circuit with the power inductor L1, and a capacitor C1 and an electrolytic capacitor C3 located on the output side of the power inductor L1 are connected in parallel between the 1st pin and the 2nd pin of the power supply terminal U15. The LC filter circuit is used to ensure the stability of the input voltage of the VRB2405YMD-6WR3 DC-DC power supply module. A spot-check capacitor C4 used to ensure the stability of the input voltage is connected in parallel between the 5th pin and the 3rd pin of the power supply module U2. The 5V output power supply of the 5th pin of the power supply module U2 is electrically connected to the eight-way input isolation conversion circuit 4, the signal processing circuit 6 and the two-way reverse output isolation circuit 7, and the power supply terminal U15 is electrically connected to the eight-way input selection circuit 5. The design of the above power supply safety isolation conversion circuit 3 can avoid the phenomena of power reverse connection, overload and short circuit during use, and ensure the stability, safety and reliability of the power supply;

[0031] As Figure 3 shown in the figure, the eight-way input isolation conversion circuit 4 is specifically as follows: The structures of the eight-way input isolation conversion circuits 4 are exactly the same. The input isolation conversion circuit 4 uses an optocoupler module one to isolate and convert the input signal into an internal circuit input signal. Among them, the optocoupler module one is the optocoupler module EL817S. Specifically, one of the input isolation conversion circuits 4 includes an optocoupler module one U5. The 1st pin of the optocoupler module one U5 is connected in series with a resistor R1 and connected to the input signal terminal. The 2nd pin of the optocoupler module one U5 is connected in series with a light-emitting diode LED1 to the input negative terminal VIN- of the power supply safety isolation conversion circuit 3, and a resistor R2 and a capacitor C5 are connected in parallel between the 1st pin and the 2nd pin of the optocoupler module one U5 and form an LC filter circuit. The 4th pin of the optocoupler module one U5 is connected with a pull-up resistor R19 and connected to the 5V output power supply of the power supply safety isolation conversion circuit 3, and the 3rd pin of the optocoupler module one U5 is connected with a pull-down resistor R18 and connected to GND. The 3rd pin of the optocoupler module one U5 is connected to the signal processing circuit 6, and the logic gate chip U4 in the signal processing circuit 6 judges the external signal according to the level state of the 3rd pin of the optocoupler module one U5.

[0032] As Figure 4 shown, the eight-way input selection circuit 5 is specifically as follows: The eight-way input selection circuit 5 includes a switch SW1 having an eight-bit DIP switch and used to select the number of input signal channels. Among them, the switch SW1 uses a DSWB08LHGET eight-bit DIP switch. One end of the switch SW1 is connected to the input port of the logic gate chip U4 of the signal processing circuit 6, and the other end of the switch SW1 is connected to the 5V output power supply of the power supply safety isolation conversion circuit 3 through a pull-up resistor network R59. The DIP switch in the switch SW1 shorts the 3rd pin and the 4th pin of the optocoupler module in the corresponding input isolation conversion circuit 4 to achieve the shielding of the signal of the corresponding signal input channel; when the corresponding signal channel is shielded, regardless of the level of the point output on the corresponding channel in the eight-way input isolation conversion circuit 4, this path will be in the on state; with the above structure, the eight-input selection circuit 5 is designed, and the number of channels can be selected through the eight-bit DIP switch in the switch SW1, which can adapt to different numbers of signal inputs and has a wide application range;

[0033] As Figure 5 shown, the signal processing circuit 6 is specifically as follows: The signal processing circuit 6 uses a logic gate chip U4 for signal processing, and is connected to the input ends of two reverse output isolation circuits 7 through the Y output pin and the Y# output pin of the logic gate chip U4. Among them, the logic gate chip U4 uses a logic gate chip CD4086.

[0034] As Figure 6As shown in the figure, the two-way reverse output isolation circuit 7 is specifically as follows: The structures of the two-way reverse output isolation circuits 7 are exactly the same. An optocoupler module two is used to isolate the output signal of the logic gate chip U4 in the signal processing circuit 6 and drive the P-MOS transistor to control the output signal. Among them, the optocoupler module two uses the optocoupler module EL817S; specifically, one of the two-way reverse output isolation circuits 7 includes an optocoupler module two U13. The 4th pin of the optocoupler module two U13 is connected to the G pole of the P-MOS transistor Q1. A resistor R46 is connected in series between the 4th pin of the optocoupler module two U13 and the G pole of the P-MOS transistor Q1, and a voltage stabilizing diode ZD1 and a resistor R45 are connected and connected to the 24V power supply of the power supply safety isolation conversion circuit 3. The 3rd pin of the optocoupler module two U13 is connected to GND through a resistor R44; the 1st pin of the optocoupler module two U13 is connected in series with a pull-up resistor R42 to the 5V output power supply of the power supply safety isolation conversion circuit 3. The 2nd pin of the optocoupler module two U13 is connected to the logic gate chip U4 in the signal processing circuit 6; the S pole of the P-MOS transistor Q1 is connected to VIN+ of the power supply safety isolation conversion circuit 3, and a resistor R50 and a capacitor C14 connected between the S pole and the D pole of the P-MOS transistor Q1 form an RC protection circuit and are used to protect the P-MOS transistor Q1; the D pole of the P-MOS transistor Q1 is pulled down to GND through a resistor R47, and a resistor R49 and an LED9 connected in series at both ends of the resistor R47 form an output display circuit. Finally, the output signals processed and amplified by the two-way reverse output isolation circuits 7 are output by OUT and OUT_.

[0035] Among them, the signal control board 2 is made by a double-sided board manufacturing process, and its size is 60mm to 80mm; specifically, the safety base 1 is made of PC material that meets the TS35-DIN rail installation standard at the bottom, and the overall size of the safety base 1 is 80.80mm×17.5mm×15mm. Snap fasteners 8 made of PA nylon material are provided at both the front and rear ends of the safety base 1.

[0036] In this technical solution, the safety base 1 is made of PC material, which ensures high flame retardancy and insulation, ensures the safety of the device, has a small designed volume, and its base setting meets the TS35-DIN rail installation standard, making it extremely easy to install; it reduces the mutual interference between different devices in daily production, improves the equipment maintenance efficiency, and the wire combiner has the advantages of good heat dissipation, small volume, safety protection, and selectable channels.

[0037] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

[0038] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An eight-way signal combining device for cigarette packaging equipment, characterized in that: It includes two safety bases (1) arranged in parallel and a signal control board (2) with both ends of the bottom surface fixed to the corresponding end safety bases (1). An input power safety isolation conversion circuit (3), an eight-way input isolation conversion circuit (4) connected to the power safety isolation conversion circuit (3), an eight-way input selection circuit (5), a signal processing circuit (6), and two-way reverse output isolation circuits (7) are integrally installed on the signal control board (2). The input ends of the eight-way input isolation conversion circuits (4) are connected to external input signal terminals, and the input end of the signal processing circuit (6) is communicated with the eight-way input isolation conversion circuits (4) and the eight-way input selection circuit (5). The signal processing circuit (6) processes and outputs the received signal by judging the on / off state of the external signal according to the level state output by the eight-way input isolation conversion circuits (4) and combining the channels shielded by the eight-way input selection circuit (5). The output ends of the eight-way input isolation conversion circuits (4) are communicated with the input ends of the two-way reverse output isolation circuits (7), and the two-way reverse output isolation circuits (7) amplify and output the received signal.

2. The eight-way signal combining device for cigarette packaging equipment according to claim 1, wherein: The power safety isolation conversion circuit (3) includes a power module U2 connected to a power wiring terminal U15 and used for converting the input 18V - 36V wide voltage into a 5V - 1A DC power supply. The 2nd pin of the power wiring terminal U15 is connected to the 2nd pin of the power module U2, and a power inductor L1, a Schottky diode D1, and a self-resetting fuse F1 for forming an anti-reverse connection and short-circuit protection circuit are connected in series between the 2nd pin of the power wiring terminal U15 and the 2nd pin of the power module U2. The 1st pin of the power wiring terminal U15 is connected to the 1st pin of the power module U2. A capacitor C2 and an electrolytic capacitor C16, which are located on the input side of the power inductor L1 and form an LC filter circuit with the power inductor L1, and a capacitor C1 and an electrolytic capacitor C3 located on the output side of the power inductor L1 are connected in parallel between the 1st pin and the 2nd pin of the power wiring terminal U15. A spot-check capacitor C4 for ensuring the stability of the input voltage is connected in parallel between the 5th pin and the 3rd pin of the power module U2. The 5V output power supply of the 5th pin of the power module U2 is electrically connected to the eight-way input isolation conversion circuit (4), the signal processing circuit (6), and the two-way reverse output isolation circuits (7), and the power wiring terminal U15 is electrically connected to the eight-way input selection circuit (5).

3. The eight-way signal parallelizer for cigarette packaging equipment according to claim 1, wherein: The structures of the eight-way input isolation conversion circuits (4) are completely the same, and the input isolation conversion circuit (4) uses an optocoupler module one to isolate and convert the input signal into an internal circuit input signal.

4. The eight-way signal combiner for cigarette packaging equipment according to claim 3, wherein: One of the input isolation conversion circuits (4) includes an optocoupler module U5. The 1st pin of the optocoupler module U5 is connected in series with a resistor R1 and then connected to the input signal terminal. The 2nd pin of the optocoupler module U5 is connected in series with a light-emitting diode LED1 to the input negative terminal VIN- of the power supply safety isolation conversion circuit (3). And a resistor R2 and a capacitor C5 are connected in parallel between the 1st pin and the 2nd pin of the optocoupler module U5 to form an LC filter circuit. The 4th pin of the optocoupler module U5 is connected with a pull-up resistor R19 and then connected to the 5V output power supply of the power supply safety isolation conversion circuit (3). And the 3rd pin of the optocoupler module U5 is connected with a pull-down resistor R18 and then connected to GND. The 3rd pin of the optocoupler module U5 is connected to the signal processing circuit (6), and the logic gate chip U4 in the signal processing circuit (6) judges the external signal according to the level state of the 3rd pin of the optocoupler module U5.

5. The eight-way signal combiner for cigarette packaging equipment according to claim 1, wherein: The eight-way input selection circuit (5) includes a switch SW1 with eight-bit DIP switches and used to select the number of input signal channels. One end of the switch SW1 is connected to the input port of the logic gate chip U4 in the signal processing circuit (6), and the other end of the switch SW1 is connected to the 5V output power supply of the power supply safety isolation conversion circuit (3) through a pull-up resistor network R59. The DIP switches in the switch SW1 short-circuit the 3rd pin and the 4th pin of the optocoupler in the corresponding input isolation conversion circuit (4) to shield the signals of the corresponding signal input channels.

6. The eight-way signal combiner for cigarette packaging equipment according to claim 1, characterized in that: The signal processing circuit (6) uses a logic gate chip U4 for signal processing, and is connected to the input ends of two reverse output isolation circuits (7) through the Y output pin and the Y# output pin of the logic gate chip U4.

7. The eight-way signal combining device for cigarette packaging equipment according to claim 1, characterized in that: The structures of the two reverse output isolation circuits (7) are exactly the same. Both use an optocoupler module to isolate the output signal of the logic gate chip U4 in the signal processing circuit (6) and drive a P-MOS transistor to control the output signal.

8. The eight-way signal parallelizer for cigarette packaging equipment according to claim 7, wherein: One of the reverse output isolation circuits (7) includes an optocoupler module U13. The 4th pin of the optocoupler module U13 is connected to the G pole of the P-MOS transistor Q1. A resistor R46 is connected in series between the 4th pin of the optocoupler module U13 and the G pole of the P-MOS transistor Q1, and a voltage stabilizing diode ZD1 and a resistor R45 are connected and then connected to the 24V power supply of the power supply safety isolation conversion circuit (3). The 3rd pin of the optocoupler module U13 is connected to GND through a resistor R44; the 1st pin of the optocoupler module U13 is connected to the 5V output power supply of the power supply safety isolation conversion circuit (3) through a series pull-up resistor R42. The 2nd pin of the optocoupler module U13 is connected to the logic gate chip U4 in the signal processing circuit (6); the S pole of the P-MOS transistor Q1 is connected to VIN+ of the power supply safety isolation conversion circuit (3), and a resistor R50 and a capacitor C14 connected between the S pole and the D pole of the P-MOS transistor Q1 form an RC protection circuit for protecting the P-MOS transistor Q1; the D pole of the P-MOS transistor Q1 is pulled down to GND through a resistor R47, and a resistor R49 and an LED9 connected in series at both ends of the resistor R47 form an output display circuit.

9. The eight-way signal combiner for cigarette packaging equipment according to any one of claims 1-8, characterized in that: The signal control board (2) is made by a double-sided board manufacturing process, and its size is 60mm to 80mm.

10. The eight-way signal parallelizer for cigarette packaging equipment according to claim 9, characterized in that: The safety base (1) is made of PC material that complies with the TS35-DIN rail mounting standard at the bottom, and the overall size of the safety base (1) is 80.80mm×17.5mm×15mm. Clips (8) made of PA nylon material are provided at both the front and rear ends of the safety base (1).

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