A full-automatic high-speed transverse cutting machine control circuit

Abstract

The utility model relates to a kind of full-automatic high-speed cross cutting machine control circuit, including power module, power distribution module, control module, monitoring module, emergency control module;Power module contains three-phase interface R, S, T, interface X1, F1, J1, F2, protective ground wire interface PE, interface J7, F6, power distribution module contains transformer T2, interface X3, V2400, V2402, V000, V2, X2, L2TL, J2, L2TN, control module contains control group, interface F7, J3, J4, fixed-size clamping and feeding motor, monitoring module contains interface VM, J8, INDF3, INDF4, F4, F5, emergency control module contains interface X6, emergency stop button, J9, modularization split and independent function operation of full-automatic high-speed cross cutting machine control circuit are realized, power module guarantees power input and primary protection, monitoring module real-time master system state, emergency control module quickly responds dangerous working condition, each module cooperates by only interface, both improve the overall stability of circuit, and it is convenient for module level repair when later maintenance.

Description

Technical Field

[0001] This utility model relates to the field of shearing precision control technology for cross-cutting machine units, and in particular to a control circuit for a fully automatic high-speed cross-cutting machine. Background Technology

[0002] In modern industrial production, the precise cutting of materials is indispensable in the processing and manufacturing of many products. Examples include the production of cardboard boxes and cartons in the packaging industry, the slitting of paper in the printing industry, and the processing of pharmaceutical packaging films in the pharmaceutical industry. Therefore, the performance of a cross-cutting machine, as a key cutting device, directly affects production efficiency and product quality.

[0003] In power supply and distribution, common control circuits lack effective overcurrent protection mechanisms and a comprehensive grounding protection system. When an overcurrent occurs in the three-phase main line, the circuit cannot be cut off in time, easily leading to damage to critical components such as transformers and control units. Simultaneously, inadequate grounding protection creates serious safety hazards when the equipment's metal casing leaks current, threatening the personal safety of operators. Furthermore, traditional power distribution methods often fail to accurately meet the differentiated power requirements of different modules, leading to mutual interference between different loads and affecting the overall operational stability of the equipment.

[0004] Against this backdrop, it is imperative to develop a novel fully automatic high-speed cross-cutting machine control circuit. This circuit must possess comprehensive power protection and distribution functions, precise control capabilities, a complete monitoring system, and a rapid and effective emergency response mechanism to meet the demands of modern industrial production for high-speed, high-precision, and high-safety cross-cutting machines. Utility Model Content

[0005] The purpose of this invention is to provide a fully automatic high-speed cross-cutting machine control circuit to solve the problems existing in the prior art.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A fully automatic high-speed cross-cutting machine control circuit includes a power supply module, a power distribution module, a control module, a monitoring module, and an emergency control module. The power supply module includes three-phase interfaces R, S, and T, interfaces X1, F1, J1, and F2, a protective ground interface PE, and interfaces J7 and F6. The three-phase interfaces R, S, and T are connected to interface X1. The protective ground interface PE is connected to interfaces X1, J7, F6, and a metal casing. Interface X1 is connected in series with F1 and then to J1. Interface J1 is connected in series with F2 and then to transformer T2.

[0008] The power distribution module includes the transformer T2, interfaces X3, V2400, V2402, V000, V2, X2, L2TL, J2, and L2TN. The transformer T2 is connected to interface X3, X3 is connected to V2400, V2402, V000, and V2, X2 is connected to L2TL, L2TL is connected to J2, and X2 is connected to L2TN to connect to the control group.

[0009] The control module includes the control group, interfaces F7, J3, J4, and a fixed-length clamping motor. The control group is connected in series with F7 and J3, and is connected to V2400, V000, and the motor. The control group is also connected to J4. The monitoring module includes interfaces VM, J8, INDF3, INDF4, F4, and F5. VM is connected to J1 and J8. INDF3 and INDF4 are connected to V2402 via F4. F5 is connected to V2401 and the sensor. The emergency control module includes interface X6, an emergency stop button, and J9. X6 is connected to the emergency stop button and J9. J9 is connected to the control group.

[0010] By adopting the above technical solution, the control circuit of the fully automatic high-speed cross-cutting machine is modularly separated and operates independently. The power supply module ensures power input and primary protection, the power distribution module realizes voltage conversion and precise power supply, the control module drives the motor to perform cross-cutting action, the monitoring module monitors the system status in real time, and the emergency control module responds quickly to dangerous conditions. All modules work together through a unique interface, which not only improves the overall stability of the circuit, but also facilitates module-level maintenance during later maintenance.

[0011] In a further embodiment, the interface F1 in the power module is a three-phase main circuit overcurrent protection switch, whose rated current value is determined according to the maximum operating current of the three-phase main line and is adapted to the voltage level of the three-phase interface R, S, T input.

[0012] By adopting the above technical solution, the protection parameters of interface F1 are accurately matched with the actual working conditions of the three-phase main circuit of the cross-cutting machine. When the circuit experiences overcurrent due to short circuit, motor stall, or other reasons, F1 can disconnect the circuit in time to prevent the overcurrent from damaging core components such as transformer T2 and control group. At the same time, it prevents the problem of "false triggering of protection" or "protection failure" caused by mismatch of protection parameters, and ensures the reliability of the power input link.

[0013] In a further embodiment, the power distribution module further includes interfaces X31, X32, X33, X34, X35, and X36. The output terminal of interface X31 is electrically connected only to the input terminal of interface V2400, the output terminal of interface X32 is connected only to the input terminal of interface V2401, and the output terminal of interface X33 is connected only to the input terminal of interface V2402. The 0V main terminal of interface X3 is also injection molded as an integral part of interfaces X34, X35, and X36. Interface X34 is connected to interface V000, interface X35 is connected to interface V1, and interface X36 is connected to interface V2. Each 0V interface corresponds to a 24V interface, forming an independent low-voltage power supply circuit.

[0014] By adopting the above technical solution, the low-voltage power supply of the power distribution module is divided into multiple independent circuits. Circuits V2400 and V000 supply power the control group, circuits V2401 and V1 supply the sensors, and circuits V2402 and V2 supply the indicator lights. Each circuit transmits power through a dedicated interface, which effectively avoids electromagnetic interference and voltage fluctuations between different loads. It is especially suitable for the high requirements of high-speed cross-cutting machines for the stability of control signals and reduces cross-cutting accuracy deviations caused by power supply interference.

[0015] In a further embodiment, interfaces V2401, V1, and F5 in the monitoring module together constitute a dedicated power supply circuit for the sensors. Two wires extend from the output of interface V2401; one wire connects to the positive power input terminal of the motor position sensor, and the other wire connects to the positive power input terminal of the clamping-in-position sensor. Two corresponding wires extend from the output of interface V1, respectively connecting to the negative power input terminals of the motor position sensor and the clamping-in-position sensor. Interface F5 is connected in series at the junction of the output of interface V2401 and the two sensor positive wires, forming centralized overcurrent protection for both sensors. Furthermore, the rated current of interface F5 is less than the maximum allowable current at the low-voltage output terminal of transformer T2.

[0016] By adopting the above technical solution, on the one hand, an independent and stable power supply is provided for the motor position sensor and the clamping and feeding position sensor, ensuring that the sensors can accurately collect the motor position and clamping status signals of the cross-cutting machine, providing reliable data support for the control group to adjust the cross-cutting speed and position; on the other hand, centralized overcurrent protection is achieved through F5. When any sensor is short-circuited, F5 will disconnect first, which not only avoids the short-circuit current from burning the low-voltage winding of transformer T2, but also eliminates the need to set up a separate protection element for each sensor, simplifying the circuit structure and reducing maintenance costs.

[0017] In a further embodiment, the interface J4 in the control module is a dedicated transmission interface for motor status signals. It has two independent signal channels. The input end of the interface J4 is connected to external components through two shielded wires: one shielded wire is connected to the encoder signal output end of the fixed length clamping motor to transmit the motor speed signal; the other shielded wire is connected to the temperature sensor signal output end installed on the stator of the fixed length clamping motor to transmit the motor temperature signal.

[0018] By adopting the above technical solution, the dual independent channels of J4 are used to realize the separate transmission of motor speed and temperature signals, avoiding mutual interference between the two signals during transmission; at the same time, the shielded wire can effectively isolate the electromagnetic noise generated during the operation of the high-speed cross-cutting machine, ensuring the accuracy of the speed signal and the authenticity of the temperature signal. The control group can adjust the motor operating parameters in real time based on the two signals, which not only meets the accuracy requirements of high-speed cross-cutting, but also extends the service life of the motor.

[0019] In a further embodiment, the INDF3 interface in the monitoring module is a dedicated interface for the system operation status indicator. The signal control terminal of the INDF3 interface is directly connected to the operation indication signal output terminal of the control group through a thin wire. When the fixed length clamping motor runs stably according to preset parameters, the control group will output a high-level signal to the signal control terminal of the INDF3 interface, thereby conducting the power supply circuit composed of the interface V2402, interface F4, interface INDF3, and interface V2, so that the green indicator connected to the INDF3 interface lights up. The INDF4 interface is a dedicated interface for the fault status indicator. Its signal control terminal is connected to the output terminal of the interface J6 through a wire. The input terminal of the interface J6 is connected to the fault signal output terminal of the interface F1, the fault signal output terminal of the interface F2, and the fault signal output terminal of the interface F7 through three independent wires, respectively.

[0020] In a further embodiment, the interfaces J7 and F6 in the power module together constitute a system grounding protection circuit. The input terminal of interface J7 is tightly and fixedly connected to the grounding terminal of interface X1. The output terminal of interface J7 extends three grounding wires. The first grounding wire is connected to the metal casing of the transformer T2, the second grounding wire is connected to the metal casing of the control group, and the third grounding wire is connected to the input terminal of interface F6. The output terminal of interface F6 is connected to all metal casing components in the system through a main grounding wire.

[0021] By adopting the above technical solution, the operating status of the cross-cutting machine can be visualized: when the green indicator light is on, the operator can intuitively judge that the system is in normal operation; when any of the protection interfaces F1, F2, and F7 triggers a fault, the fault signal is transmitted to INDF4 via J6, triggering the fault light to illuminate. The operator does not need to check each module one by one, and the fault can be quickly located in the power input or power circuit, shortening the fault troubleshooting time and improving the downtime recovery efficiency of the high-speed production line.

[0022] In a further embodiment, the power module's interface J1, the power distribution module's interfaces L2TL, J2, X2, and L2TN together constitute the auxiliary power supply circuit of the control group; the output of interface J1 is divided into two paths by insulated wires, the first path is directly connected to the input of interface F2 to provide operating power to the transformer T2; the second path is directly connected to the input of interface L2TL to supply power to the auxiliary power supply circuit; the input of interface J2 is connected to another branch of the three-phase main line, and its output is connected to the input of interface L2TL by a wire to supplement the power of the auxiliary power supply circuit and avoid insufficient power supply from a single path.

[0023] By adopting the above technical solution, the second path of J1 and the branch line of J2 jointly supply power to L2TL. Even if one path is temporarily de-energized or experiences voltage fluctuations, the other path can still ensure a stable output of auxiliary power, avoiding program disorder or sudden stop of cross-cutting operation caused by the interruption of auxiliary power supply. At the same time, the auxiliary power supply is separated from the power supply of transformer T2, reducing the impact of transformer load changes on the auxiliary power supply voltage, ensuring the stable operation of the control signal processing and logic operation functions of the control group, and adapting to the continuous and uninterrupted production needs of the high-speed cross-cutting machine.

[0024] In summary, this utility model has the following beneficial effects:

[0025] 1. By accurately matching the protection parameters of interface F1 with the actual operating conditions of the three-phase main circuit of the cross-cutting machine, F1 can disconnect the circuit in time when overcurrent occurs due to short circuit, motor stall, etc., to avoid damage to core components such as transformer T2 and control group by overcurrent. At the same time, it prevents the problem of "false triggering of protection" or "protection failure" caused by mismatch of protection parameters, and ensures the reliability of the power input link. Attached Figure Description

[0026] Figure 1 This is the circuit diagram of this utility model;

[0027] Figure 2 This is the electrical schematic diagram of this utility model. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings.

[0029] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to the attached figures. Figure 1 In this specification, the terms "bottom surface" and "top surface," "inner" and "outer" refer to the direction toward or away from the geometry of a specific component. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this specification, "a plurality of" means two or more, unless otherwise explicitly and specifically defined by the direction of the center.

[0030] Example 1:

[0031] like Figures 1-2 As shown, a fully automatic high-speed cross-cutting machine control circuit includes a power supply module, a power distribution module, a control module, a monitoring module, and an emergency control module. The power supply module includes three-phase interfaces R, S, and T, interfaces X1, F1, J1, and F2, a protective ground interface PE, and interfaces J7 and F6. The three-phase interfaces R, S, and T are connected to interface X1, the protective ground interface PE is connected to interfaces X1, J7, and F6, and a metal casing is provided. Interface X1 is connected in series with F1 to J1, and J1 is connected in series with F2 to transformer T2.

[0032] The power distribution module includes transformer T2, interfaces X3, V2400, V2402, V000, V2, X2, L2TL, J2, and L2TN. Transformer T2 is connected to interface X3, X3 is connected to V2400, V2402, V000, and V2, X2 is connected to L2TL, L2TL is connected to J2, and X2 is connected to L2TN to connect to the control group.

[0033] The control module includes a control group with interfaces F7, J3, and J4. It connects to a fixed-length clamping motor, with control group F7 connected to J3. The control group also connects to V2400, V000, and the motor, and to J4. The monitoring module includes interfaces VM, J8, INDF3, INDF4, F4, and F5. VM connects to J1 and J8. INDF3 and INDF4 connect to V2402 via F4. F5 connects to V2401 and the sensor. The emergency control module includes interface X6, an emergency stop button, and J9. X6 connects to the emergency stop button and J9. J9 connects to the control group.

[0034] Interface F1 in the power module is a three-phase main circuit overcurrent protection switch. Its rated current value is determined according to the maximum operating current of the three-phase main line and is compatible with the voltage levels of the three-phase interface R, S, T inputs.

[0035] The power distribution module also includes interfaces X31, X32, X33, X34, X35, and X36. The output of interface X31 is electrically connected only to the input of interface V2400, the output of interface X32 is connected only to the input of interface V2401, and the output of interface X33 is connected only to the input of interface V2402. The 0V main terminal of interface X3 is also injection molded as an integral part of interfaces X34, X35, and X36. Interface X34 has a connection port V000, interface X35 has a connection port V1, and interface X36 has a connection port V2. Each 0V interface corresponds to a 24V interface, forming an independent low-voltage power supply circuit.

[0036] Interfaces V2401, V1, and F5 in the monitoring module together form a dedicated power supply circuit for the sensors. Two wires extend from the output of interface V2401. One wire connects to the positive power input terminal of the motor position sensor, and the other wire connects to the positive power input terminal of the clamping sensor. Two corresponding wires extend from the output of interface V1, which connect to the negative power input terminals of the motor position sensor and the clamping sensor, respectively. Interface F5 is connected in series at the junction of the output of interface V2401 and the two sensor positive wires, forming centralized overcurrent protection for the two sensors. The rated current of interface F5 is less than the maximum allowable current at the low-voltage output terminal of transformer T2.

[0037] Interface J4 in the control module is a dedicated transmission interface for motor status signals. It has two independent signal channels. The input end of interface J4 is connected to external components through two shielded wires: one shielded wire is connected to the encoder signal output end of the fixed length clamping motor to transmit the motor speed signal; the other shielded wire is connected to the temperature sensor signal output end installed on the stator of the fixed length clamping motor to transmit the motor temperature signal.

[0038] The INDF3 interface in the monitoring module is a dedicated interface for the system operation status indicator. The signal control terminal of the INDF3 interface is directly connected to the operation indicator signal output terminal of the control group through a thin wire. When the fixed length clamping motor runs stably according to the preset parameters, the control group will output a high-level signal to the signal control terminal of the INDF3 interface, thereby conducting the power supply circuit composed of interface V2402, interface F4, interface INDF3, and interface V2, so that the green indicator connected to the INDF3 interface lights up. The INDF4 interface is a dedicated interface for the fault status indicator. Its signal control terminal is connected to the output terminal of interface J6 through a wire. The input terminal of interface J6 is connected to the fault signal output terminal of interface F1, the fault signal output terminal of interface F2, and the fault signal output terminal of interface F7 through three independent wires, respectively.

[0039] Interfaces J7 and F6 in the power module together form the system grounding protection circuit. The input terminal of interface J7 is tightly and fixedly connected to the grounding terminal of interface X1. Three grounding wires extend from the output terminal of interface J7. The first grounding wire is connected to the metal casing of transformer T2, the second grounding wire is connected to the metal casing of the control group, and the third grounding wire is connected to the input terminal of interface F6. The output terminal of interface F6 is connected to all metal casing components in the system through a main grounding wire.

[0040] The power module interface J1, the power distribution module interfaces L2TL, J2, X2, and L2TN together constitute the auxiliary power supply circuit of the control group. The output of interface J1 is divided into two paths by insulated wires. The first wire is directly connected to the input of interface F2 to provide working power to transformer T2. The second wire is directly connected to the input of interface L2TL to supply power to the auxiliary power circuit. The input of interface J2 is connected to another branch of the three-phase main line, and its output is connected to the input of interface L2TL by a wire to supplement the power of the auxiliary power circuit and avoid insufficient power supply from a single path.

[0041] Specific implementation process: First, the operator closes the external main power switch. Three-phase grid power is input to interface X1 of the power module through the three-phase interfaces R, S, and T. Simultaneously, the protective ground interface PE is connected to the external grounding grid, forming a system grounding loop. Interface PE synchronously transmits the grounding signal to the grounding terminal of interface X1, the input terminal of interface J7, and the input terminal of interface F6. Interface J7 then distributes the grounding signal to the metal casing of transformer T2 and the metal casing of the control group. Interface F6 conducts the grounding signal to all metal casing components within the system, ensuring reliable grounding of all metal components at the moment of power-on and eliminating the risk of leakage. At this time, the three-phase output terminal of interface X1 transmits power to interface F1. Since there is no overcurrent abnormality in the three-phase main line, interface F1 remains closed, and the power is transmitted to interface J1 through interface F1. Interface J1 divides the power into two paths: the first path is transmitted to the input terminal of transformer T2 through interface F2 to power the transformer, and the second path is directly transmitted to interface L2TL of the power distribution module to prepare for the auxiliary power supply circuit of the control group.

[0042] After transformer T2 is energized, it begins voltage conversion, converting the input high-voltage three-phase power into 24V low-voltage DC power and a 0V reference voltage. The 24V output terminal is connected to the 24V main terminal of interface X3 on the power distribution module, and the 0V output terminal is connected to the 0V main terminal of interface X3. Interface X3, as an integrated low-voltage distribution interface, uses its internally injection-molded interfaces X31, X32, and X33 to shunt the 24V voltage. Interface X31 transmits the 24V voltage to interface V2400. Interface X32 transmits power to interface V2401, and interface X33 transmits power to interface V2402. Simultaneously, the 0V main terminal of interface X3 transmits 0V voltage to interfaces V000, V1, and V2 respectively via interfaces X34, X35, and X36, forming three independent low-voltage power supply circuits: the V2400-V000 circuit supplies power to the control group of the control module; the V2401-V1 circuit supplies power to the sensors of the monitoring module; and the V2402-V2 circuit supplies power to the status indicator lights of the monitoring module. During this process, interface J2 of the power distribution module obtains power from another branch of the three-phase main line and transmits it to interface L2TL, where it merges with the second power transmitted from interface J1 to jointly power interface L2TL, ensuring sufficient power for the auxiliary power circuit. Interface L2TL transmits stable auxiliary power to interface X2, which then transmits it to the auxiliary power input terminal of the control group via interface L2TN, providing the control group with dual complementary power supply and preventing operation disruptions caused by a single power supply interruption.

[0043] After the control group simultaneously acquires the low-voltage control power supply of the V2400-V000 circuit and the auxiliary power supply transmitted through the L2TN interface, it enters the initialization state. First, it sends a conduction signal to the interface F7 through the interface J3. After receiving the signal, the interface F7 closes, so that the power of the three-phase main line branch is transmitted to the power input terminal of the control group through the interface J3 and the interface F7, and the control group officially has the driving capability. Subsequently, the control group sends a start signal to the length clamping motor through the motor control terminal. The length clamping motor starts at a preset speed, driving the cross-cutting machine actuator to begin cross-cutting operations. At the same time, the control group receives motor status signals through interface J4. Interface J4 has two independent channels. The first channel is connected to the encoder of the length clamping motor through a shielded wire. The encoder collects the motor speed signal in real time and transmits it to the control group through this channel. The control group adjusts the control signal output to the motor according to the speed signal to ensure stable motor speed. The second channel is connected to the temperature sensor on the motor stator through another shielded wire. The temperature sensor collects the motor stator temperature signal and transmits it to the control group. The control group monitors the temperature value in real time. If the temperature approaches the threshold, it reduces the motor speed or triggers an alarm.

[0044] During the operation of the cross-cutting machine, the monitoring module works continuously: On the one hand, the positive input terminal of interface VM is connected to interface J1, and the negative input terminal is connected to interface J8, collecting the voltage signal at interface J1 in real time and transmitting it to the control group. The control group uses this signal to determine whether the power supply module is stable. On the other hand, the sensor power supply circuit provides power to the monitoring sensors. Interface V2401 transmits 24V positive power to the motor position sensor and the clamping and positioning sensor through two wires respectively, and interface V1 transmits 0V negative power through two corresponding wires, enabling the two sensors to start and collect signals: the motor position sensor collects the motor rotor position signal, which is used by the control group to accurately adjust the motor start and stop timing; the clamping and positioning sensor collects the material clamping status signal to ensure that the material is in place before performing the cross-cutting action, avoiding empty cutting or cutting deviation; interface F5 is connected in series between V2401 and the sensor. If any sensor short-circuits, interface F5 immediately disconnects to prevent the short-circuit current from burning out the low-voltage winding of transformer T2. In addition, the status indication loop operates synchronously: the control group outputs a high level to the signal control terminal of interface INDF3, which conducts the V2402-F4-INDF3-V2 loop, and the green indicator light connected to interface INDF3 lights up, indicating to the operator that the system is operating normally; the signal control terminal of interface INDF4 is connected to interface J6, and the input terminal of interface J6 is connected to the fault signal output terminals of interfaces F1, F2, and F7 respectively. If the F1 or F2 of the power module or the F7 of the control module is triggered to disconnect, the corresponding fault signal is transmitted to INDF4 through interface J6, which conducts the V2402-F4-INDF4-V2 loop, and the red fault light lights up, making it easy for the operator to quickly locate the faulty module.

[0045] In case of an emergency at the cross-cutting machine, the operator presses the external emergency stop button, and the emergency control module responds immediately: After the emergency stop button is triggered, interface X6 transmits the emergency stop signal to interface J9, and interface J9 then transmits it to the emergency stop signal input terminal of the control group; upon receiving the signal, the control group immediately cuts off the control signal output to the length clamping motor, causing the motor to stop running, and simultaneously disconnects the conduction state between interface F7 and interface J3, cutting off the power supply to the control group, and the cross-cutting machine's actuator stops operating; if the fault is cleared after the emergency stop, the operator resets the emergency stop button, the control group is reinitialized, and operation resumes according to the above procedure; if a long-term shutdown is required, the operator disconnects the external main power switch, the three-phase interfaces R, S, and T stop supplying power, each module is gradually de-energized, and the grounding circuit remains conductive until the residual charge is completely released, and the entire working process ends.

[0046] In the embodiments disclosed in this utility model, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments disclosed in this utility model according to the specific circumstances.

[0047] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A control circuit for a fully automatic high-speed cross-cutting machine, characterized in that: It includes a power supply module, a power distribution module, a control module, a monitoring module, and an emergency control module; the power supply module includes three-phase interfaces R, S, and T, interfaces X1, F1, J1, and F2, a protective ground interface PE, and interfaces J7 and F6. The three-phase interfaces R, S, and T are connected to interface X1, the protective ground interface PE is connected to interfaces X1, J7, and F6 and the metal casing, interface X1 is connected in series with F1 and then to J1, and J1 is connected in series with F2 and then to transformer T2. The power distribution module includes the transformer T2, interfaces X3, V2400, V2402, V000, V2, X2, L2TL, J2, and L2TN. The transformer T2 is connected to interface X3, X3 is connected to V2400, V2402, V000, and V2, X2 is connected to L2TL, L2TL is connected to J2, and X2 is connected to L2TN to connect to the control group. The control module includes the control group, interfaces F7, J3, J4, and a fixed-length clamping motor. The control group is connected in series with F7 and J3, and is connected to V2400, V000, and the motor. The control group is also connected to J4. The monitoring module includes interfaces VM, J8, INDF3, INDF4, F4, and F5. VM is connected to J1 and J8. INDF3 and INDF4 are connected to V2402 via F4. F5 is connected to V2401 and the sensor. The emergency control module includes interface X6, an emergency stop button, and J9. X6 is connected to the emergency stop button and J9. J9 is connected to the control group.

2. The control circuit for a fully automatic high-speed cross-cutting machine according to claim 1, characterized in that: The interface F1 in the power module is a three-phase main circuit overcurrent protection switch. Its rated current value is determined according to the maximum operating current of the three-phase main line and is compatible with the voltage levels of the R, S, and T inputs of the three-phase interface.

3. The control circuit for a fully automatic high-speed cross-cutting machine according to claim 1, characterized in that: The power distribution module also includes interfaces X31, X32, X33, X34, X35, and X36. The output terminal of interface X31 is electrically connected only to the input terminal of interface V2400, the output terminal of interface X32 is connected only to the input terminal of interface V2401, and the output terminal of interface X33 is connected only to the input terminal of interface V2402. The 0V main terminal of interface X3 is also injection molded as an integral part of interfaces X34, X35, and X36. Interface X34 is connected to interface V000, interface X35 is connected to interface V1, and interface X36 is connected to interface V2. Each 0V interface corresponds to a 24V interface, forming an independent low-voltage power supply circuit.

4. The control circuit for a fully automatic high-speed cross-cutting machine according to claim 1, characterized in that: The monitoring module's interfaces V2401, V1, and F5 together form a dedicated power supply circuit for the sensors. Two wires extend from the output of interface V2401; one wire connects to the positive power input terminal of the motor position sensor, and the other wire connects to the positive power input terminal of the clamping sensor. Two corresponding wires extend from the output of interface V1, connecting to the negative power input terminals of the motor position sensor and the clamping sensor, respectively. Interface F5 is connected in series at the junction of the output of interface V2401 and the two sensor positive wires, providing centralized overcurrent protection for both sensors. Furthermore, the rated current of interface F5 is less than the maximum allowable current at the low-voltage output terminal of transformer T2.

5. The control circuit for a fully automatic high-speed cross-cutting machine according to claim 1, characterized in that: The interface J4 in the control module is a dedicated transmission interface for motor status signals. It has two independent signal channels. The input end of the interface J4 is connected to external components through two shielded wires: one shielded wire is connected to the encoder signal output end of the fixed length clamping motor to transmit the motor speed signal; the other shielded wire is connected to the temperature sensor signal output end installed on the stator of the fixed length clamping motor to transmit the motor temperature signal.

6. The control circuit for a fully automatic high-speed cross-cutting machine according to claim 1, characterized in that: The INDF3 interface in the monitoring module is a dedicated interface for the system operation status indicator. The signal control terminal of the INDF3 interface is directly connected to the operation indication signal output terminal of the control group through a thin wire. When the fixed length clamping motor runs stably according to preset parameters, the control group will output a high-level signal to the signal control terminal of the INDF3 interface, thereby conducting the power supply circuit composed of the interface V2402, interface F4, interface INDF3, and interface V2, so that the green indicator connected to the INDF3 interface lights up. The INDF4 interface is a dedicated interface for the fault status indicator. Its signal control terminal is connected to the output terminal of the interface J6 through a wire. The input terminal of the interface J6 is connected to the fault signal output terminal of the interface F1, the fault signal output terminal of the interface F2, and the fault signal output terminal of the interface F7 through three independent wires, respectively.

7. The control circuit for a fully automatic high-speed cross-cutting machine according to claim 1, characterized in that: Interfaces J7 and F6 in the power module together form a system grounding protection circuit. The input terminal of interface J7 is tightly and fixedly connected to the grounding terminal of interface X1. Three grounding wires extend from the output terminal of interface J7. The first grounding wire is connected to the metal casing of transformer T2, the second grounding wire is connected to the metal casing of the control group, and the third grounding wire is connected to the input terminal of interface F6. The output terminal of interface F6 is connected to all metal casing components in the system through a main grounding wire.

8. The control circuit for a fully automatic high-speed cross-cutting machine according to claim 1, characterized in that: The power supply module's interface J1, and the power distribution module's interfaces L2TL, J2, X2, and L2TN together constitute the auxiliary power supply circuit of the control group. The output of interface J1 is divided into two paths by insulated wires. The first path is directly connected to the input of interface F2 to provide operating power to transformer T2. The second path is directly connected to the input of interface L2TL to supply power to the auxiliary power supply circuit. The input of interface J2 is connected to another branch of the three-phase main line, and its output is connected to the input of interface L2TL by a wire to supplement the power of the auxiliary power supply circuit and avoid insufficient power supply from a single path.

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