A safety interlock detection and fault display system and a carton packing machine

Abstract

The present invention discloses a safety interlock detection and fault display implementation system and a carton filling and sealing machine. The system includes a programmable logic controller (PLC) and an operation interface display unit. The logic input module of the PLC is connected to the normally closed contacts of the safety door, and the operation interface display unit is connected to the PLC to monitor the switch status of the safety door and display faults. The proposed solution can display which door is open, accurately determining which door is open or has a fault, making operation simpler and improving equipment efficiency. By connecting 11 safety doors to 11 PLC input points, the circuit is simpler and more intuitive, making circuit troubleshooting and repair more convenient and easy.

Description

Technical Field

[0001] This invention relates to the field of cigarette equipment, and more specifically, to a safety interlock detection and fault display system and a carton sealing machine. Background Technology

[0002] The YP13 carton sealing machine is a model for producing finished cigarette packs. This carton sealing machine has 11 safety interlock doors, all of which have normally closed contacts connected in series in a circuit. When all safety doors are closed, the control circuit is activated, energizing the coil of the KA52 relay. The normally open contact of the KA52 closes and provides a high level to the I1.5 input point of the A1.1 input module of the PLC. When a safety door is opened, the equipment cannot start and displays "Safety Protection" and "Main Air Valve Closed" on the fault display screen, but it cannot show which specific safety door was opened. Therefore, it sometimes takes a long time to resolve the fault, especially when there is a problem with the safety interlock door. The interlock door is in the normal closed position, but the normally closed contact of the interlock door is not closed, making it difficult to troubleshoot. (In addition to being connected in series in the circuit output to the I1.5 input point of the PLC, the "Stacking In Small Door" and "Stacking Out Small Door" are also connected in series separately in the circuit output to the I1.6 input point of the PLC. When one of these two doors is opened, not only will the "Safety Protection" and "Main Air Valve Closed" alarms be triggered, but the cigarette packs in the stacking area of ​​the carton sealing machine must also be emptied before the machine can be started to prevent missing packs or cigarette packing.)

[0003] Currently, apart from the original machine's safety interlock detection and fault display, there are no other technical solutions for the YP13 carton sealing machine to detect and display safety interlocks and faults, making it impossible to quickly locate the safety interlock fault point.

[0004] The current YP13 carton sealing machine's safety interlock detection and fault display only shows the same fault signals "Safety Protection" and "Main Air Valve Closed" for 11 safety doors. It cannot show which door's normally closed contact is not closed, making it impossible to quickly find the safety interlock fault point, affecting equipment efficiency and increasing labor costs. Summary of the Invention

[0005] One objective of this invention is to provide a new technical solution for a safety interlock detection and fault display system and a carton sealing machine.

[0006] According to a first aspect of the present invention, a safety interlock detection and fault display implementation system is provided, comprising:

[0007] It includes: a programmable logic controller and an operation interface display unit; the logic input module of the programmable logic controller is connected to the normally closed contact of the safety door, and the operation interface display unit is connected to the programmable logic controller to monitor the opening and closing status of the safety door and display faults.

[0008] Optionally, the safety door has eleven safety doors; the normally closed contacts of the eleven safety doors are connected to the logic input module of the programmable logic controller.

[0009] Optionally, the logic input module of the programmable logic controller includes eleven logic input points; the normally closed contacts of the eleven safety doors are connected in parallel with the eleven logic input points.

[0010] Optionally, the eleven logic input points are connected in series to output a first intermediate variable as the first fault display of the safety gate.

[0011] Optionally, the eleven security doors include stack-in doors and stack-out doors;

[0012] The stack-in gate and the stack-out gate correspond to two of the eleven logical input points.

[0013] Furthermore, the two logic input points are connected in series to output a second intermediate variable, which serves as the second fault display for the safety gate.

[0014] Optionally, the user interface display unit is communicatively connected to the programmable logic controller.

[0015] Optionally, the programmable logic controller communicates the status of the eleven logic input points, the first intermediate variable, and the second intermediate variable to the operation interface display unit.

[0016] Optionally, the interface of the operation interface display unit includes: fault display and safety interlock buttons;

[0017] The next level interface of the safety interlock button includes: a safety interlock screen for eleven safety doors, displaying the open / closed status of the eleven safety doors.

[0018] Optionally, in the safety interlock screen, each safety door corresponds to a square status light. When the safety door is open, the square status light is red, and when the safety door is closed, the square status light is green.

[0019] According to a second aspect of the present invention, a carton sealing machine is provided, including the safety interlock detection and fault display implementation system described in any one of the first aspects of the present invention.

[0020] According to an embodiment of the present invention, the following advantages are achieved: it can display which specific door is open, accurately determine which door is open or malfunctioning, simplifying operation and improving equipment efficiency. Connecting the 11 safety doors to 11 PLC input points respectively simplifies and makes the circuit more intuitive, facilitating troubleshooting and repair.

[0021] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description

[0022] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with their description, serve to explain the principles of the invention.

[0023] Figure 1 This is a schematic diagram of a safety interlock detection and fault display system according to an embodiment;

[0024] Figure 2 This is a schematic diagram of the user interface display unit provided according to an embodiment.

[0025] The diagram shows: 1—operation interface display unit, 2—square status light corresponding to the safety door. Detailed Implementation

[0026] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention.

[0027] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0028] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0029] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0030] Example 1:

[0031] like Figure 1 As shown, this embodiment provides a safety interlock detection and fault display system, including a programmable logic controller (PLC) and an operation interface display unit 1, and a square status light 2 corresponding to the safety door; the logic input module of the PLC is connected to the normally closed contact of the safety door, and the operation interface display unit 1 is connected to the PLC to monitor the opening and closing status of the safety door and display faults.

[0032] In some embodiments, the security door has eleven security doors; the normally closed contacts of the eleven security doors are connected to the logic input module of the programmable logic controller.

[0033] In some embodiments, the logic input module of the programmable logic controller includes eleven logic input points; the normally closed contacts of the eleven safety gates are connected in parallel with the eleven logic input points.

[0034] In some embodiments, the eleven logic input points are connected in series to output a first intermediate variable as the first fault display of the safety door, which is represented as "safety protection" and "main air valve closed".

[0035] In some embodiments, the eleven security doors include stack-in doors and stack-out doors;

[0036] The stack-in gate and the stack-out gate correspond to two of the eleven logical input points.

[0037] Furthermore, the two logic input points are connected in series to output a second intermediate variable, which serves as the second fault display for the safety door, indicating "safety protection" and "main gas valve closed". In addition, the cigarette bars at the stacking area of ​​the carton sealing machine must be emptied before the machine can be started.

[0038] In some embodiments, the user interface display unit is communicatively connected to the programmable logic controller.

[0039] In some embodiments, the programmable logic controller communicates the status of eleven logic input points, a first intermediate variable, and a second intermediate variable to the operation interface display unit.

[0040] In some embodiments, the interface of the operation interface display unit includes: fault display and safety interlock buttons;

[0041] like Figure 2 As shown, the next level interface of the safety interlock button includes: a safety interlock screen for eleven safety doors, displaying the open / closed status of the eleven safety doors.

[0042] In some embodiments, in the safety interlock screen, each safety door corresponds to a square status light. When the safety door is open, the square status light is red, and when the safety door is closed, the square status light is green.

[0043] In addition to retaining the original machine functions (opening the safety interlock door stops the equipment, closes the main gas valve, and requires clearing the cigarette packs from the stacking area after opening the "stack in small door" and "stack out small door") and alarm content (the original machine fault display screen reports "safety protection" and "main gas valve closed" faults), the system will turn off the corresponding safety interlock input light on the PLC input module when the safety interlock door is opened, and turn the corresponding safety door status light red when the safety interlock screen is opened.

[0044] Example 2:

[0045] This embodiment provides a carton sealing machine, including the safety interlock detection and fault display system described in any one of the embodiments.

[0046] In summary, the solution proposed in this invention can display which door is open, accurately determine which door is open or malfunctioning, simplifying operation and improving equipment efficiency. Connecting the 11 safety doors to 11 PLC input points simplifies and makes the circuitry more intuitive, facilitating troubleshooting and repair.

[0047] While specific embodiments of the invention have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of the invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A safety interlock detection and fault display system, characterized in that, include: A programmable logic controller (PLC) and an operation interface display unit are included; the logic input module of the PLC is connected to the normally closed contact of the safety door; the operation interface display unit is connected to the PLC to monitor the opening and closing status of the safety door and display faults. The safety door has eleven safety doors; the normally closed contacts of the eleven safety doors are connected to the logic input module of the programmable logic controller; The logic input module of the programmable logic controller includes eleven logic input points; the normally closed contacts of the eleven safety doors are connected in parallel with the eleven logic input points; The eleven logic input points are connected in series to output the first intermediate variable, which serves as the first fault display of the safety door, indicating "safety protection" and "main air valve closed"; The eleven security doors include stack-in doors and stack-out doors; The stack-in gate and the stack-out gate correspond to two of the eleven logical input points. Furthermore, the two logic input points are connected in series to output a second intermediate variable, which serves as the second fault display for the safety door, indicating "safety protection" and "main air valve closed"; The user interface display unit is communicatively connected to the programmable logic controller. The programmable logic controller transmits the status of the eleven logic input points, the first intermediate variable, and the second intermediate variable to the operation interface display unit. The interface of the operation interface display unit includes: fault display and safety interlock buttons; The next level interface of the safety interlock button includes: a safety interlock screen for eleven safety doors, displaying the open / closed status of the eleven safety doors; In the safety interlock screen, each safety door corresponds to a square status light. When the safety door is open, the square status light is red, and when the safety door is closed, the square status light is green.

2. A carton sealing machine, characterized in that, The system includes the safety interlock detection and fault display system as described in claim 1.

Images