Safety circuit for an engine block casting production line plant and control method thereof
By designing a safety circuit in the engine block casting production line, the emergency stop of the deburring machine can be achieved without affecting the operation of other equipment, thus solving the problems of production efficiency and personnel pressure, and improving the overall efficiency and safety of the production line.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- GAC HONDA AUTOMOBILE CO LTD
- Filing Date
- 2022-12-05
- Publication Date
- 2026-04-28
AI Technical Summary
In the engine block casting production line, the emergency stop signal of the deburring machine affects the operation of other equipment, resulting in reduced production efficiency and high stress on the staff.
Design a safety circuit for an engine cylinder block casting production line. By connecting the automatic door and the emergency stop circuit of the deburring machine in parallel, an emergency stop can be achieved without affecting the operation of peripheral equipment, and the power supply of the deburring machine can be automatically shut off when an abnormality is detected.
It improved the maintenance and production efficiency of the production line, reduced the workload of staff, and ensured the safe operation of the production line.
Smart Images
Figure CN115837451B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of manufacturing technology, and in particular to a safety circuit and control method for an engine cylinder block casting production line equipment. Background Technology
[0002] With the continuous improvement of industrial automation, the concepts of mechanized and automated manufacturing have been gradually implemented in various processing industries. In the vehicle production process, there is a process for machining engine blocks. At the end of this process, a deburring machine is typically used to remove burrs from the block. When the deburring machine malfunctions or encounters other abnormalities, in order to improve the uptime of the production line, it can be temporarily shut down, allowing operators to temporarily clean the burrs. This will not affect the operation of the block casting line. Once the malfunction is repaired, the deburring machine can be restarted to restore the normal process flow.
[0003] However, in practical applications, it was found that in the engine block casting production line, because the deburring machine and other equipment are located within the same safety enclosure area, they have an emergency stop signal interlock function. When the emergency stop button on the deburring machine is pressed, the emergency stop signal will affect the operation of other equipment on the production line, so maintenance of the deburring machine can only be carried out after the production line has stopped. This easily leads to reduced production efficiency and increased work pressure on the staff.
[0004] In summary, the problems with the relevant technologies urgently need to be solved. Summary of the Invention
[0005] The purpose of this application is to at least partially solve one of the technical problems existing in the related art.
[0006] Therefore, one objective of this application is to provide a safety circuit and control method for an engine cylinder block casting production line equipment.
[0007] To achieve the above-mentioned technical objectives, the technical solutions adopted in the embodiments of this application include:
[0008] On the one hand, this application provides a safety circuit for an engine cylinder block casting production line equipment, which includes a die casting machine, a spray tank, a punching machine, an engraving device, a deburring machine, and several robotic arms;
[0009] The die-casting machine is used for die-casting cylinder bodies; the spray water tank is used for cooling the die-cast cylinder bodies; the edge-punching machine is used for removing excess slag from the cylinder bodies; the engraving equipment is used for engraving identification codes onto the cylinder bodies; and the deburring machine is used for deburring the cylinder bodies.
[0010] The safety circuit includes an automatic door and an emergency stop circuit for the deburring machine, wherein the door closing limit signal of the automatic door and the contacts of the emergency stop circuit for the deburring machine are connected in parallel.
[0011] In addition, the safety circuit of an engine block casting production line equipment according to the above embodiments of this application may also have the following additional technical features:
[0012] Furthermore, in one embodiment of this application, the robotic arm includes a spraying robotic arm, a picking robotic arm, and a handling robotic arm.
[0013] Furthermore, in one embodiment of this application, the number of automatic doors is two.
[0014] Furthermore, in one embodiment of this application, the automatic door's door closing limit signal includes four contacts, each of which is connected to a relay coil; the door closing limit signal uses dual-circuit wiring.
[0015] Furthermore, in one embodiment of this application, the identification code includes at least one of a barcode or a QR code.
[0016] Furthermore, in one embodiment of this application, the automatic door is a pneumatic door.
[0017] Furthermore, in one embodiment of this application, the safety circuit also introduces power through the die-casting equipment, connects the power supply to the contact of the automatic door's door closing limit signal, and returns the signal to the die-casting equipment safety circuit.
[0018] Furthermore, in one embodiment of this application, the voltage of the power supply is 24V.
[0019] On the other hand, embodiments of this application provide a control method for a safety circuit of an engine block casting production line equipment, used to control the safety circuit as described above, the control method comprising:
[0020] Check the operating status of the deburring machine;
[0021] When the deburring machine malfunctions, close the automatic door, press the emergency stop button in the emergency stop circuit of the deburring machine, and disconnect the power supply to the deburring machine.
[0022] In addition, the control method according to the above embodiments of this application may also have the following additional technical features:
[0023] Furthermore, in one embodiment of this application, the method further includes the following steps:
[0024] Output an alarm signal; the alarm signal is used to prompt the staff to inspect and maintain the deburring machine.
[0025] The advantages and beneficial effects of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application:
[0026] This application discloses a safety circuit for an engine block casting production line. The production line includes a die-casting machine, a spray tank, a punching machine, an engraving device, a deburring machine, and several robotic arms. The die-casting machine is used for die-casting the cylinder block. The spray tank is used to cool the die-cast cylinder block. The punching machine is used to remove excess slag from the cylinder block. The engraving device is used to engrave identification codes onto the cylinder block. The deburring machine is used to deburr the cylinder block. The safety circuit includes an automatic door and an emergency stop circuit for the deburring machine. The door closing limit signal of the automatic door and the contact of the emergency stop circuit for the deburring machine are connected in parallel. The safety circuit provided in this application disables the deburring machine after the automatic door is closed. Pressing the emergency stop circuit of the deburring machine allows for an emergency stop without affecting the operation of other peripheral equipment, improving maintenance and production efficiency and reducing the workload of workers. Attached Figure Description
[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the following description is provided with accompanying drawings of the relevant technical solutions in the embodiments of this application or the prior art. It should be understood that the accompanying drawings described below are only for the purpose of clearly illustrating some embodiments of the technical solutions of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.
[0028] Figure 1 This is a schematic diagram of the structure of an engine cylinder block casting production line equipment provided in the embodiments of this application;
[0029] Figure 2 This is a wiring diagram of a safety circuit for an engine cylinder block casting production line equipment in the related technology.
[0030] Figure 3 This is a wiring diagram of a safety circuit for an engine block casting production line equipment provided in this application embodiment;
[0031] Figure 4 This is a schematic diagram of the structure of an automatic door in the safety circuit of an engine cylinder block casting production line equipment provided in this application embodiment;
[0032] Figure 5This is a wiring diagram of the automatic door of the safety circuit of an engine cylinder block casting production line equipment provided in this application embodiment;
[0033] Figure 6 This is a wiring diagram of the die-casting equipment and automatic door for the safety circuit of an engine cylinder block casting production line provided in this application embodiment. Detailed Implementation
[0034] The present application will be further described below with reference to the accompanying drawings and specific embodiments. The described embodiments should not be considered as limitations on the present application, and all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present application.
[0035] In the following description, references are made to “some embodiments,” which describe a subset of all possible embodiments. However, it is understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.
[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application.
[0037] With the continuous improvement of industrial automation, the concepts of mechanized and automated manufacturing have been gradually implemented in various processing industries. In the vehicle production process, there is a process for machining engine blocks. At the end of this process, a deburring machine is typically used to remove burrs from the block. When the deburring machine malfunctions or encounters other abnormalities, in order to improve the uptime of the production line, it can be temporarily shut down, allowing operators to temporarily clean the burrs. This will not affect the operation of the block casting line. Once the malfunction is repaired, the deburring machine can be restarted to restore the normal process flow.
[0038] However, in practical applications, it was found that in the engine block casting production line, because the deburring machine and other equipment are located within the same safety enclosure area, they have an emergency stop signal interlock function. When the emergency stop button on the deburring machine is pressed, the emergency stop signal will affect the operation of other equipment on the production line, so maintenance of the deburring machine can only be carried out after the production line has stopped. This easily leads to reduced production efficiency and increased work pressure on the staff.
[0039] In view of this, this application provides a safety circuit for an engine cylinder block casting production line equipment. The engine cylinder block casting production line equipment includes a die-casting machine, a spray tank, a punching machine, an engraving device, a deburring machine, and several robotic arms. The die-casting machine is used for die-casting the cylinder block; the spray tank is used to cool the die-cast cylinder block; the punching machine is used to remove excess slag from the cylinder block; the engraving device is used to engrave identification codes onto the cylinder block; the deburring machine is used to deburr the cylinder block. The safety circuit includes an automatic door and an emergency stop circuit for the deburring machine, with the automatic door's door closing limit signal and the deburring machine's emergency stop circuit's contacts connected in parallel. The safety circuit provided in this application embodiment stops the deburring machine after the automatic door is closed. Pressing the deburring machine's emergency stop circuit allows for an emergency stop without affecting the operation of other peripheral equipment, which is beneficial for improving maintenance and production efficiency and reducing the workload of workers.
[0040] Before explaining and describing the safety circuit of the engine block casting production line equipment in the embodiments of this application, the engine block casting production line equipment in the embodiments of this application will first be introduced.
[0041] Specifically, please refer to Figure 1 In this embodiment, the engine block casting production line equipment mainly includes a die-casting machine, a spray tank, a punching machine, an engraving device, a deburring machine, and several robotic arms. These robotic arms specifically include a spraying robotic arm, a part-retrieving robotic arm, and a handling robotic arm. Specifically, in the engine block casting production line, the spraying robotic arm is mainly responsible for spraying a release agent onto the mold; the die-casting machine is the production equipment for producing engine blocks, used for mold closing and die-casting; the part-retrieving robotic arm is mainly responsible for removing the cylinder block from the die-casting equipment and placing it into the spray tank, which is used to cool the die-cast cylinder block. The punching machine is used to remove excess slag from the cylinder block; the handling robotic arm moves the cylinder block between the punching machine, the engraving device, and the deburring machine. The engraving device is used to engrave identification codes onto the cylinder block, which can be at least one of barcodes or QR codes, and this application does not limit this. The deburring machine is mainly used for removing burrs from the cylinder block and is generally the last procedure.
[0042] In this embodiment, to ensure timely repair and restoration of the deburring machine during malfunctions without affecting the operation of the engine block casting production line, a safety circuit with two states is designed while meeting safety requirements. This circuit can be either "enabled" or "disabled." In the "disabled" state, an emergency stop signal or power shutdown will not affect the operation of peripheral equipment. This allows for immediate repair of the deburring machine, improving efficiency and reducing the workload of personnel.
[0043] Specifically, please refer to Figure 2In the original safety circuit, the emergency stop dual circuits SR01-1 and SR02-1 are the emergency stop relay coils output from the deburring machine to external equipment. When the circuit is closed and the coil is energized, it is in normal operation. When the deburring machine malfunctions, pressing the emergency stop button disconnects the circuit, de-energizes the coil, and external equipment such as the die-casting equipment cannot receive the emergency stop confirmation signal, thus immediately stopping and affecting normal operation.
[0044] The safety circuit provided in this embodiment includes an automatic door and an emergency stop circuit for the deburring machine, wherein the door closing limit signal of the automatic door and the contacts of the emergency stop circuit for the deburring machine are connected in parallel.
[0045] Reference Figure 3 , Figure 3 Bank of China's SR01-1 and Bank of China's SR02-1 are Figure 2 The normally open contact of the emergency stop circuit coil is closed when the equipment is not in an emergency stop state. When the pneumatic door is closed, SR19 / SR23 and SR21 / SR25 are normally closed, keeping SR14 and SR15 coils energized. If the emergency stop button is pressed at this time, the deburring machine will stop immediately, but the emergency stop confirmation signal output to the die-casting equipment will not be cut off. Therefore, external equipment such as the die-casting equipment can operate normally, and the emergency stop effect of the deburring machine itself is not affected. Production can be maintained normally while ensuring the safety of the production line, and the deburring machine can also be maintained in a timely manner. Figure 3 In the middle, the last two lines, 313A and 313B, and the SR14 and SR15 contacts are the emergency stop confirmation signals that the deburring machine finally outputs to the die-casting equipment. They can be connected to the emergency stop circuit of the die-casting equipment.
[0046] Specifically, please refer to Figure 4 In some embodiments, the automatic door in this application may be a pneumatic door. Please refer to... Figure 5 , Figure 5 This is a wiring diagram of an automatic door provided in an embodiment of this application. In this embodiment, there are two automatic doors in the safety circuit, and their corresponding door closing limit signals include four contacts, each connected to a relay coil, for a total of four relay coil circuits. Each automatic door provides dual-circuit protection.
[0047] In some embodiments, the safety circuit also introduces power through the die-casting equipment, connects the power to the contacts of the automatic door's door closing limit signal, and returns the signal to the die-casting equipment safety circuit.
[0048] In the embodiments of this application, reference is made to Figure 6P24A is a 24V power supply introduced from the die-casting equipment. After being connected to the door closing limit signal contact of the automatic door, the XRL / XRR signals return to the safety circuit of the die-casting equipment. Then, after being associated with the relevant signals of the mode selection, it is connected in parallel with the emergency stop signal of the deburring equipment. In this way, even if the main power supply of the deburring machine is disconnected and the safety relay signal is disconnected, the XRL / XRR signals of the safety door circuit are still connected, thus not affecting the safe operation of the die-casting equipment.
[0049] In this application embodiment, a control method for the safety circuit of an engine cylinder block casting production line equipment is also provided. This control method can be configured to be executed in the main control chip circuit of the aforementioned engine cylinder block casting production line equipment safety circuit, or it can be executed by other additional module units. This application does not limit this.
[0050] The control methods for the safety circuit of the engine block casting production line equipment include, but are not limited to:
[0051] Step 110: Check the operating status of the deburring machine;
[0052] Step 120: When the deburring machine malfunctions, close the automatic door, press the emergency stop button in the emergency stop circuit of the deburring machine, and disconnect the power supply to the deburring machine.
[0053] In this embodiment, the operating status of the deburring machine can be monitored in real time during engine block casting production line. When the deburring machine malfunctions, the emergency stop button in the emergency stop circuit can be pressed, disconnecting the power supply to the deburring machine and temporarily removing it from the production line. Based on the aforementioned description of the safety circuit, it can be understood that when the deburring equipment malfunctions, closing the automatic door and stopping the equipment allows for pressing the emergency stop circuit to achieve an emergency stop without affecting the operation of other peripheral equipment. Furthermore, the closing of the automatic door connects the power supply from external equipment, allowing the power to the deburring machine to be disconnected for maintenance without affecting the operation of other die-casting equipment.
[0054] In some embodiments, the method further includes:
[0055] Output an alarm signal; the alarm signal is used to prompt the staff to inspect and maintain the deburring machine.
[0056] In this embodiment of the application, an alarm signal can be output when an abnormality is detected in the deburring machine. For example, the alarm signal can be an audible and visual alarm signal, used to prompt the staff to inspect and repair the deburring machine, thereby quickly resolving the fault in the deburring machine, facilitating its resumption of production, improving production efficiency, and reducing the pressure on the staff.
[0057] In some alternative embodiments, the functions / operations mentioned in the block diagrams may not occur in the order shown in the operation diagrams. For example, depending on the functions / operations involved, two consecutively shown blocks may actually be executed substantially simultaneously, or the blocks may sometimes be executed in reverse order. Furthermore, the embodiments presented and described in the flowcharts of this application are provided by way of example to provide a more comprehensive understanding of the technology. The disclosed methods are not limited to the operations and logic flows presented herein. Alternative embodiments are contemplated in which the order of various operations is changed and sub-operations described as part of a larger operation are executed independently.
[0058] Furthermore, although this application is described in the context of functional modules, it should be understood that, unless otherwise stated to the contrary, one or more of the functions and / or features may be integrated into a single physical device and / or software module, or one or more functions and / or features may be implemented in a separate physical device or software module. It is also understood that a detailed discussion of the actual implementation of each module is unnecessary for understanding this application. Rather, given the properties, functions, and internal relationships of the various functional modules in the apparatus disclosed herein, the actual implementation of the module will be understood within the scope of conventional technology for an engineer. Therefore, those skilled in the art can implement the application set forth in the claims using ordinary techniques without excessive experimentation. It is also understood that the specific concepts disclosed are merely illustrative and not intended to limit the scope of this application, which is determined by the full scope of the appended claims and their equivalents.
[0059] If a function is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.
[0060] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device.
[0061] More specific examples of computer-readable media (a non-exhaustive list) include: electrical connections (electronic devices) having one or more wires, portable computer disk drives (magnetic devices), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Furthermore, computer-readable media can even be paper or other suitable media on which programs can be printed, because programs can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in computer memory.
[0062] It should be understood that various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.
[0063] In the foregoing description of this specification, the references to terms such as "one embodiment," "another embodiment," or "some embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0064] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.
[0065] The foregoing has provided a detailed description of the preferred embodiments of this application. However, this application is not limited to these embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of this application. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.
[0066] In the description of this specification, the references to terms such as "one embodiment," "another embodiment," or "some embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0067] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.
Claims
1. A control method for the safety circuit of an engine cylinder block casting production line equipment, characterized in that, The engine block casting production line equipment includes a die-casting machine, a spray tank, a punching machine, an engraving device, a deburring machine, and several robotic arms. The die-casting machine is used for die-casting the cylinder block. The spray tank is used to cool the die-cast cylinder block. The punching machine is used to remove excess slag from the cylinder block. The engraving device is used to engrave identification codes onto the cylinder block. The deburring machine is used to deburr the cylinder block. The safety circuit includes an automatic door and an emergency stop circuit for the deburring machine. The door closing limit signal of the automatic door and the contact of the emergency stop circuit of the deburring machine are connected in parallel. The safety circuit also introduces power through the die-casting equipment, connects the power supply to the contact of the door closing limit signal of the automatic door, and returns a signal to the safety circuit of the die-casting equipment. The control method includes: Check the operating status of the deburring machine; When the deburring machine malfunctions, close the automatic door, press the emergency stop button in the emergency stop circuit of the deburring machine, and disconnect the power supply to the deburring machine.
2. The control method for the safety circuit of an engine cylinder block casting production line equipment according to claim 1, characterized in that, The robotic arms include a spraying robotic arm, a picking robotic arm, and a handling robotic arm.
3. The control method for the safety circuit of an engine cylinder block casting production line equipment according to claim 1, characterized in that, The number of automatic doors is 2.
4. The control method for the safety circuit of an engine cylinder block casting production line equipment according to claim 3, characterized in that, The automatic door's door closing limit signal includes four contacts, each connected to a relay coil; the door closing limit signal uses a dual-circuit wiring.
5. The control method for the safety circuit of an engine cylinder block casting production line equipment according to claim 1, characterized in that, The identification code includes at least one of a barcode or a QR code.
6. A control method for the safety circuit of an engine cylinder block casting production line equipment according to any one of claims 1-5, characterized in that, The automatic door is a pneumatic door.
7. The control method for the safety circuit of an engine cylinder block casting production line equipment according to claim 1, characterized in that, The power supply has a voltage of 24V.
8. The control method for the safety circuit of an engine cylinder block casting production line equipment according to claim 1, characterized in that, The method further includes the following steps: Output an alarm signal; the alarm signal is used to prompt the staff to inspect and maintain the deburring machine.
Citation Information
Patent Citations
Emergency stop device for production line
JP1990006631U