A door safety interlock device, an interlocking method, a storage medium and a computer device

Abstract

This application discloses a door safety interlock device, belonging to the field of production equipment safety protection. The interlock device includes a door interlock signal detection module, a controller, and a bypass control module. The door interlock signal detection module is used to detect whether the safety interlock door is fully closed and converts the interlock signal to indicate whether the safety interlock door is fully closed. The controller is used to receive the interlock signal generated by the door interlock signal detection module and determine whether the actuator should perform an operation based on the interlock signal generated by the door interlock signal detection module. The bypass control module is used to send a bypass signal to the controller, and the controller determines whether to suppress the interlock signal generated by the door interlock signal detection module based on the bypass signal. In this application, the interlock signal is used as a necessary condition for the operation of the packaging machine actuator, realizing the forced locking of the actuator when the safety interlock door is open, fundamentally eliminating the mechanical injury safety hazard caused by the failure of conventional door interlocks.

Description

Technical Field

[0001] This application relates to the field of safety protection technology for production equipment, specifically to a door safety interlock device, interlocking method, storage medium, and computer equipment. Background Technology

[0002] In the tobacco processing workshop, the pack opening machine is a crucial raw material handling device, equipped with multiple safety interlock doors for equipment maintenance, raw material feeding, and other operations. Currently, in manual operation, when multiple door safety interlocks are open, the feed trolley, discharge trolley, and conveyor belt of the existing Furongwang production line pack opening machine system can still be directly started and operated via the control panel, uncontrolled by the door safety interlocks. This poses a significant safety hazard and could easily lead to personnel injury accidents. Furthermore, the existing equipment lacks a dedicated maintenance and debugging bypass switch, requiring temporary wiring modifications during maintenance or debugging, which is cumbersome and prone to creating new safety hazards if wiring is not restored promptly. Furthermore, misoperation caused by the failure of the door safety interlock of the packaging machine can easily lead to equipment shutdown and power outage. Troubleshooting and production recovery usually take one hour. According to the energy consumption standards of the silk-making workshop, multiple shutdowns per month will result in high energy consumption and production efficiency losses, causing economic losses to the enterprise. Since the operation of the operating parts in the packaging machine is not controlled by the door safety interlock, the drawback of safety accidents is something that people in this field need to solve. Summary of the Invention

[0003] The purpose of this application is to provide a door safety interlock device, interlock method, storage medium, and computer equipment to solve the aforementioned defects caused by the prior art.

[0004] To achieve the above objectives, this application employs the following technical solution: In a first aspect, this application discloses a safety interlock device for a package opening machine door, comprising: The door interlock signal detection module is used to detect whether all safety interlock doors are closed and to convert the interlock signal into an interlock signal indicating whether the safety interlock doors are fully closed. The controller is used to receive the interlock signal generated by the door interlock signal detection module, and determine whether the actuator should perform the operation based on the interlock signal generated by the door interlock signal detection module; A bypass control module is used to send a bypass signal to the controller, and the controller determines whether to suppress the interlock signal generated by the door interlock signal detection module based on the bypass signal.

[0005] In a further embodiment of this application, the door interlock signal detection module includes a proximity switch mounted on the safety interlock door; The door interlock signal detection module is configured to generate a corresponding interlock signal indicating whether all proximity switches are closed, and the controller determines whether the actuator should perform an operation based on the interlock signal.

[0006] A further proposed solution includes the following steps in determining whether the actuator performs an operational action: When all the proximity switches are closed, the door interlock signal detection module sends a first signal, and the controller inputs a running command to the drive module of the actuator. When the proximity switch is not fully closed and / or open, the door interlock signal detection module sends a second signal, and the controller cuts off the input of the running command to the drive module of the actuator.

[0007] In a further embodiment of this application, the bypass control module includes an air switch and a switch signal detection unit; The switch signal detection unit is configured to generate a corresponding bypass signal indicating whether the air switch is closed, and the controller determines whether to release or restore the interlock signal's operation restriction on the actuator based on the bypass signal.

[0008] A further embodiment of the scheme, wherein the process of determining whether the interlock signal releases or restores the operational restriction on the actuator includes: When the air switch is closed, the switch signal detection unit sends a third signal, and the controller releases the interlock signal from restricting the operation of the actuator; When the air switch is turned off, the switch signal detection unit sends a fourth signal, and the controller resumes the interlock signal to control the actuator.

[0009] In a further embodiment of this application, the actuator includes a feeding trolley drive control module, a discharging trolley drive control module, and a conveyor belt drive control module; The controller is configured to control whether the feeding trolley drive control module, the discharging trolley, and the conveyor belt drive control module start or stop according to the interlock signal drive control module.

[0010] Secondly, this application discloses an interlocking method based on the aforementioned door safety interlocking device, which includes... It responds to the detection of whether all safety interlock doors are closed, and converts the interlock signal to indicate whether the safety interlock doors are fully closed; Receive the interlock signal generated by the door interlock signal detection module, and determine whether the actuator should perform the operation based on the interlock signal generated by the door interlock signal detection module; A bypass signal is sent to the controller, and the controller determines whether to suppress the interlock signal generated by the door interlock signal detection module based on the bypass signal.

[0011] Thirdly, this application discloses a computer-readable storage medium that stores one or more programs, the one or more programs including instructions that, when executed by a computing device, cause the computing device to perform the methods described above.

[0012] Fourthly, this application discloses a computer device comprising: One or more processors and one or more memories, one or more programs stored in one or more memories and configured to be executed by one or more processors, the one or more programs including instructions for performing the methods described above.

[0013] The beneficial effects of this application are as follows: In this application, the interlock signal is used as a necessary condition for the operation of the package opening machine actuator. This enables the forced locking of the feeding trolley, discharging trolley, and conveyor belt (actuator) when the safety interlock door is open. In actual application, the above mechanisms cannot be operated regardless of whether the equipment is in manual or automatic mode. This fundamentally eliminates the mechanical injury safety hazards caused by the failure of conventional door interlocks and protects the life safety of operators. The newly added bypass control module allows the controller to determine whether to release or restore the interlock signal's impact on the start and stop of the actuator through the bypass signal issued by the bypass control module. In emergency situations (maintenance, repair), it can avoid secondary safety hazards caused by untimely restoration of wiring modifications, and at the same time improve the efficiency of equipment maintenance and debugging. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the door safety interlock device in the embodiments of this application; Figure 2 This is a logical schematic diagram of the interlocking method in the embodiments of this application. Detailed Implementation

[0015] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use. Example 1

[0016] like Figure 1As shown, this application discloses an embodiment of a door safety interlock device, which includes a door interlock signal detection module, a controller, and a bypass control module. The door interlock signal detection module is used to detect whether the safety interlock door is fully closed and to convert the interlock signal into an interlock signal indicating whether the safety interlock door is fully closed. The controller is used to receive the interlock signal generated by the door interlock signal detection module and to determine whether the actuator should perform an operating action based on the interlock signal generated by the door interlock signal detection module. The bypass control module is used to send a bypass signal to the controller, and the controller determines whether to suppress the interlock signal generated by the door interlock signal detection module based on the bypass signal.

[0017] During use, the door interlock signal detection module detects whether all safety interlock doors are in place and sends the corresponding interlock signal. The controller determines whether the actuator can start operation based on this signal. At the same time, a bypass control module is added. The bypass control module sends a bypass signal to the controller. If necessary, the controller can suppress the interlock signal to complete the necessary maintenance or retrieval work (such work requires starting the actuator).

[0018] In this embodiment, the door interlock signal detection module includes a proximity switch installed on the safety interlock door; the door interlock signal detection module is configured to generate a corresponding interlock signal indicating whether all proximity switches are closed, and the controller determines whether the actuator should perform an operating action based on the interlock signal; When all proximity switches are closed, the door interlock signal detection module sends a first signal, and the controller inputs a running command to the drive module of the actuator. When the proximity switch is not fully closed and / or open, the door interlock signal detection module sends a second signal, and the controller cuts off the input of running instructions to the drive module of the actuator.

[0019] In this embodiment, the bypass control module includes an air switch and a switch signal detection unit; The switch signal detection unit is configured to generate a corresponding bypass signal indicating whether the air switch is closed. The controller determines whether to release or restore the interlock signal's operational restriction on the actuator based on the bypass signal.

[0020] When the air switch is closed, the switch signal detection unit sends a third signal, and the controller releases the interlock signal from restricting the operation of the actuator. When the air switch is open, the switch signal detection unit sends a fourth signal, and the controller restores the interlock signal to control the actuator; depending on whether the air switch is open or closed, the controller restores or releases the interlock signal from the actuator.

[0021] In this embodiment, the safety interlock device is installed in the packaging machine of the Furongwang production line. The controller is a Siemens CPU1513-1PN model. The actuator includes a feeding trolley, a discharging trolley, and a conveyor belt. Each component is equipped with a corresponding drive control module. The door interlock signal detection module uses proximity switches corresponding to the six safety interlock doors, which are installed at the closing point of each safety interlock door. The output of each limit switch is electrically connected to the signal input of the controller to detect the opening and closing status of each safety interlock door in real time and transmit the electrical signal to the controller. An air switch is installed in the JB+B01 substation box of the package opener. The output terminal of the air switch is connected to the switch signal detection unit. The switch signal detection unit is electrically connected to another signal input terminal of the controller to form a bypass control unit module. The air switch is normally kept in the open state.

[0022] The safety interlock door closure signal detected by the door interlock signal detection module serves as a sufficient condition for the PLC controller to send operating instructions to the feed trolley, discharge trolley, and conveyor belt drive control modules. When any safety interlock door is in the open state, the door interlock signal detection module does not output a closure signal, and the controller cuts off the output of operating instructions to the feed trolley, discharge trolley, and conveyor belt drive control modules, preventing the aforementioned actuators from starting.

[0023] Maintenance / Debugging Operation: The operator opens the safety interlock door that needs maintenance. At this time, the equipment actuator is in the locked state. The air switch is closed, and the bypass control unit sends a bypass signal to the controller. The controller releases the door interlock restriction, and the operator can operate the feeding trolley, discharging trolley, or conveyor belt through the operation panel according to the maintenance / debugging needs. After the maintenance / debugging is completed, the operator first stops the operation of all actuators through operation panel 9, then disconnects the air switch, and finally closes all safety interlock doors. The equipment returns to the interlock control state for normal production. Example 2

[0024] As attached Figure 2 As shown, this application also discloses an embodiment, which relates to an interlocking method based on the safety interlocking device described in the above embodiment; including the following steps: It responds to the detection of whether all safety interlock doors are closed, and converts the interlock signal to indicate whether the safety interlock doors are fully closed; Receive the interlock signal generated by the door interlock signal detection module, and determine whether the actuator should perform the operation based on the interlock signal generated by the door interlock signal detection module; A bypass signal is sent to the controller, which then determines whether to suppress the interlock signal generated by the door interlock signal detection module based on the bypass signal. Example 3

[0025] This application discloses an embodiment of a computer-readable storage medium that stores one or more programs, the one or more programs including instructions that, when executed by a computing device, cause the computing device to perform the method in embodiment 2. Example 4

[0026] This application discloses an embodiment of a computer device comprising: one or more processors and one or more memories, wherein one or more programs are stored in the one or more memories and configured to be executed by the one or more processors, and the one or more programs include instructions for performing the interlocking method of embodiment 2.

[0027] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0028] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

Claims

1. A door safety interlock device, characterized in that, include: The door interlock signal detection module is used to detect whether all safety interlock doors are closed and to convert the interlock signal into an interlock signal indicating whether the safety interlock doors are fully closed. The controller is used to receive the interlock signal generated by the door interlock signal detection module, and determine whether the actuator should perform the operation based on the interlock signal generated by the door interlock signal detection module; A bypass control module is used to send a bypass signal to the controller, and the controller determines whether to suppress the interlock signal generated by the door interlock signal detection module based on the bypass signal.

2. The door safety interlock device according to claim 1, characterized in that, The door interlock signal detection module includes a proximity switch installed on the safety interlock door; The door interlock signal detection module is configured to generate a corresponding interlock signal indicating whether all proximity switches are closed, and the controller determines whether the actuator should perform an operation based on the interlock signal.

3. The door safety interlock device according to claim 2, characterized in that, The process of determining whether the actuator performs an operational action includes: When all the proximity switches are closed, the door interlock signal detection module sends a first signal, and the controller inputs a running command to the drive module of the actuator. When the proximity switch is not fully closed and / or open, the door interlock signal detection module sends a second signal, and the controller cuts off the input of running instructions to the drive module of the actuator.

4. The door safety interlock device according to claim 1, characterized in that, The bypass control module includes an air switch and a switch signal detection unit; The switch signal detection unit is configured to generate a corresponding bypass signal indicating whether the air switch is closed, and the controller determines whether to release or restore the interlock signal's operation restriction on the actuator based on the bypass signal.

5. The door safety interlock device according to claim 4, characterized in that, The process of determining whether the interlock signal releases or restores the operational restrictions on the actuator includes: When the air switch is closed, the switch signal detection unit sends a third signal, and the controller releases the interlock signal from restricting the operation of the actuator; When the air switch is turned off, the switch signal detection unit sends a fourth signal, and the controller resumes the interlock signal to control the actuator.

6. The door safety interlock device according to claim 1, characterized in that, The actuator includes a feeding trolley drive control module, a discharging trolley drive control module, and a conveyor belt drive control module; The controller is configured to control whether the feeding trolley drive control module, the discharging trolley, and the conveyor belt drive control module start or stop according to the interlock signal drive control module.

7. A method for interlocking a door safety interlocking device according to any one of claims 1 to 6, characterized in that, include It responds to the detection of whether all safety interlock doors are closed, and converts the interlock signal to indicate whether the safety interlock doors are fully closed; Receive the interlock signal generated by the door interlock signal detection module, and determine whether the actuator should perform the operation based on the interlock signal generated by the door interlock signal detection module; A bypass signal is sent to the controller, and the controller determines whether to suppress the interlock signal generated by the door interlock signal detection module based on the bypass signal.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores one or more programs, the one or more programs including instructions that, when executed by a computing device, cause the computing device to perform the method of any one of claims 1 to 5.

9. A computer device, characterized in that, include: One or more processors and one or more memories, one or more programs stored in one or more memories and configured to be executed by one or more processors, the one or more programs including instructions for performing the method of any one of claims 1 to 6.

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