Safety device for the moving area of a press
Patent Information
- Application Number
- CN202522292772.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-29
- Publication Date
- 2026-10-23
- Estimated Expiration
- 2035-10-29
AI Technical Summary
[0002]为了提高工厂的生产效率，现在大多数工厂都完成了自动化模式的改造，但并不是完全的无人化车间，还是需要部分人工操作，所以就会涉及到人员的安全问题
[0017]本申请提供的一种压机移动区域的安全保护装置，通过检测系统检测是否存在人员闯入风险区的子区域，一旦检测到有人员闯入风险区的子区域的入口和/或出口处，响应系统立刻停止风险区的该子区域内的操作机的运行，解决了人员的安全问题。
Smart Images
Figure CN224889200U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of automated safety production technology, and in particular relates to a safety protection device for the moving area of a press. Background Technology
[0002] To improve factory production efficiency, most factories have now completed automation upgrades. However, these are not completely unmanned workshops and still require some manual operation, which raises safety concerns, particularly in areas where people and machines work together.
[0003] The existing technology has the following defects and deficiencies: At present, there are generally no safety interlock protection devices or guardrails around the press operator in China. Without the protection device, if the operator enters the walking area during operation, the risk of mechanical injury to personnel is extremely high. Using guardrails for hard isolation causes great inconvenience to steel feeding, on-site command and cleaning of hammers during the production process, affects production efficiency, and there are gaps in protection. Utility Model Content
[0004] This application provides a safety protection device for the moving area of a press, which solves the problem of personnel safety when entering a sub-area of the risk zone.
[0005] To achieve the above objectives, this application provides the following technical solution:
[0006] A safety protection device for a press movement area includes a detection system and a response system, the detection system and the response system being electrically connected. The safety protection device has a first area and a second area, the first area being a safe area and the second area being a risk area. The number of sub-areas of the risk area is consistent with the number of operating machines of the press. When personnel are located at the entrance and / or exit of a sub-area of the risk area, they are detected by the detection system, the response system stops the operation of the operating machine in that sub-area of the risk area, and an alarm is triggered via an alarm unit. The detection system includes a photoelectric sensor and a reflector, the reflector being used to reflect light signals from the photoelectric sensor; the photoelectric sensor is used to receive light signals from the reflector, and the photoelectric sensor and the response system are electrically connected.
[0007] Furthermore, in the safety protection device described above, the photoelectric sensor and the reflector are positioned at the same height; one of the photoelectric sensor and the reflector is located on one side of the entrance to the sub-area of the risk zone, and the other is located on the other side of the entrance to the sub-area of the risk zone; and / or, one of the photoelectric sensor and the reflector is located on one side of the exit to the sub-area of the risk zone, and the other is located on the other side of the exit to the sub-area of the risk zone.
[0008] Furthermore, in the safety protection device described above, the reflector is installed on the side of the entrance to the sub-area of the risk zone near the main unit of the press, and the photoelectric sensor is installed on the side of the entrance to the sub-area of the risk zone away from the main unit of the press; and / or, the reflector is installed on the side of the exit of the sub-area of the risk zone near the main unit of the press, and the photoelectric sensor is installed on the side of the exit of the sub-area of the risk zone away from the main unit of the press.
[0009] Furthermore, in the safety protection device described above, the distance between the photoelectric sensor and the reflector does not exceed 30m.
[0010] Furthermore, in the safety protection device described above, the response system includes a PLC controller and an alarm unit on the operator unit; the PLC controller and the alarm unit are electrically connected, and the PLC controller and the photoelectric sensor are electrically connected.
[0011] Furthermore, in the safety protection device described above, the detection system also includes a field reset switch and a manipulator reset switch; the field reset switch is located on the sub-area side of the risk zone and is set corresponding to the sub-area of the risk zone, and the manipulator reset switch is located on the remote operating platform side. The field reset switch and the manipulator reset switch are electrically connected to the manipulator of the press located in the corresponding sub-area of the risk zone in a series operation manner.
[0012] Furthermore, in the safety protection device described above, the installation height of the photoelectric sensor ranges from 400mm to 600mm.
[0013] Furthermore, in the safety protection device described above, the alarm unit is a buzzer and / or a brightly lit alarm message.
[0014] Furthermore, in the safety protection device described above, the installation height of the field reset switch is set within the range of 1200-1600mm.
[0015] Furthermore, in the safety protection device described above, the width of the entrance and / or exit of the sub-area of the risk zone ranges from 1 to 30 meters.
[0016] The technical solution provided in this application has the following beneficial effects:
[0017] This application provides a safety protection device for the moving area of a press. The detection system detects whether personnel have entered a sub-area of the risk zone. Once personnel are detected entering the entrance and / or exit of the sub-area of the risk zone, the response system immediately stops the operation of the operating machine in that sub-area of the risk zone, thus solving the personnel safety problem. Attached Figure Description
[0018] Figure 1 A structural schematic diagram of a safety protection device for the moving area of a press provided in this application;
[0019] Figure 2 A schematic diagram of the PLC controller of one of the operating machines of a safety protection device for the moving area of a press provided in this application;
[0020] Figure 3 A schematic diagram of the PLC controller of another operator of a safety protection device for the moving area of a press provided in this application;
[0021] Explanation of reference numerals in the attached diagram: Main unit 1, Operating unit 2, Photoelectric sensor 11, Reflector 12, Second area 22, First risk area 221, Second risk area 222; Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0025] See attached document Figure 1-3This application provides a detailed description of a safety protection device for the moving area of a press. Figure 1 A schematic diagram of a safety protection device for the moving area of a press provided in this application; Figure 2 A schematic diagram of the PLC controller of one of the operating machines of a safety protection device for the moving area of a press provided in this application; Figure 3 A schematic diagram of the PLC controller of another operator of a safety protection device for the moving area of a press provided in this application.
[0026] In summary, the basic technical solution of this utility model is described as follows: A safety protection device for the moving area of a press includes a detection system and a response system, which are electrically connected. The safety protection device has a first area and a second area 22. The first area is a safe area, and the second area 22 is a risk area. The number of sub-areas within the risk area is consistent with the number of operating machines of the press. When personnel are located at the entrance and / or exit of a sub-area of the risk area, they are detected by the detection system. The response system stops the operation of the operating machine within that sub-area and issues an alarm through an alarm unit. The detection system includes a photoelectric sensor and a reflector. The reflector reflects light signals from the photoelectric sensor, and the photoelectric sensor receives the light signals from the reflector. The photoelectric sensor and the response system are electrically connected.
[0027] This application provides a safety protection device for the moving area of a press. The detection system detects whether personnel have entered a sub-area of the risk zone. Once personnel are detected entering the entrance and / or exit of the sub-area of the risk zone, the response system immediately stops the operation of the operating machine in that sub-area of the risk zone, thus solving the personnel safety problem.
[0028] The following section details a safety protection device for the moving area of a press provided in this application.
[0029] like Figure 1As shown, this application provides a safety protection device for a press movement area, including a detection system and a response system, which are electrically connected. The device divides the area into a first zone and a second zone 22 based on its location. The first zone is a safe zone, and the second zone 22 is a risk zone. When personnel are located at the entrance and / or exit of a sub-zone within a risk zone, they are detected by the detection system, and the response system stops the operation of the operating machine within that sub-system of the risk zone. The second zone can be divided into N sub-zones, i.e., the risk zone includes the first risk zone, the second risk zone, ..., the Nth risk zone (N being the maximum number of operating machines), to achieve separate processing of the N sub-zones. Each sub-zone corresponds to one operating machine. The number of operating machines determines the number of sub-areas; that is, the number of operating machines and the number of sub-areas are consistent. When personnel are located at the entrance and / or exit of the Nth risk area, they are detected by the detection system. The response system stops the operation of the Nth operating machine of the compressor in the Nth risk area and issues an alarm through the alarm unit. The detection system is used to collect data on whether personnel have entered the risk area and provides it to the response system. The response system is used to protect the safety of personnel and takes corresponding actions based on the data provided by the detection system. The corresponding actions include alarming and stopping the operation of the Nth operating machine in the Nth risk area. The detection system is set at the entrance and / or exit of the Nth risk area (a sub-area of the risk area).
[0030] It should be noted that the press can be a forging press, which includes a main machine 1 and an operating machine 2, which are electrically connected. The main machine 1 of the forging press applies mechanical or hydraulic force to cause plastic deformation of the high-temperature metal billet, thereby processing it into a forging with a specific shape, size, and mechanical properties. The operating machine 2 of the forging press is used to clamp, transport, flip, and position the high-temperature metal billet, and works with the main machine 1 to complete the forging process. Each operating machine has an independent motion space, and there is a path in this independent motion space connecting it to the main machine. The number of manipulators 2 can be N, meaning there is an Nth manipulator. Each manipulator is matched with each sub-area of the risk zone, and each manipulator's independent movement space corresponds to each sub-area of the corresponding risk zone. In other words, the Nth manipulator is located in the Nth risk zone. The number of sub-areas of the risk zone is determined by the number of manipulators on the press, where N is the maximum number of manipulators, such as 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10. In a specific embodiment, there are two manipulators 2, namely a first manipulator and a second manipulator, respectively located on opposite sides of the main unit 1. The manipulators 2 are movable. For personnel safety, the press is located within the risk zone, and the boundary of the risk zone is equipped with protective railings to isolate personnel from the risk zone and protect their safety. The following explanation uses two manipulators as an example. The risk zone includes a first risk zone and a second risk zone. Manipulator 2 includes a first manipulator and a second manipulator. One side of the host 1 is the first risk zone where the first manipulator is allowed to move, and the other side of the host 1 is the second risk zone where the second manipulator is allowed to move. That is, within the second area 22, the host 1 is the boundary, with one side of the host 1 being the first risk zone and the other side being the second risk zone. In a specific embodiment, the first manipulator moves along the first track within the first risk zone, and the second manipulator moves along the second track within the second risk zone, without interfering with each other. Similarly, the Nth manipulator moves along the Nth track within the Nth risk zone.
[0031] The detection system includes a photoelectric sensor 11 and a reflector 12. The reflector 12 reflects the light signal from the photoelectric sensor 11, and the photoelectric sensor 11 receives the light signal from the reflector 12. Specifically, the light beam (diameter ≤ 20 mm) from the photoelectric sensor 11 is directed towards the reflector 12, reflected by the reflector 12, and then received by the photoelectric sensor 11. The photoelectric sensor 11 is electrically connected to the response system.
[0032] The photoelectric sensor 11 and reflector 12 are installed at the entrance and / or exit of a sub-area of the risk zone, which is used for the entry and exit of equipment and personnel. One of the photoelectric sensor and reflector is located on one side of the entrance to the sub-area of the risk zone, and the other is located on the other side. Alternatively, one of the photoelectric sensor and reflector is located on one side of the exit of the sub-area of the risk zone, and the other is located on the other side. The photoelectric sensor 11 and reflector 12 are positioned at the same height. A lower height and a larger reflector 12 effectively reduce the impact of vibration on detection accuracy. In one specific embodiment, to protect the photoelectric sensor 11, the reflector is installed on the side of the entrance to the sub-area of the risk zone closer to the press, and the photoelectric sensor is installed on the side of the entrance to the sub-area of the risk zone away from the press. Alternatively, the reflector is installed on the side of the exit to the sub-area of the risk zone closer to the press, and the photoelectric sensor is installed on the side of the exit to the exit of the sub-area of the risk zone away from the press. The main unit 1 is close to the high-temperature steel material, and the reflector 12 has no electrical components, allowing it to be placed on the side of the main unit 1 where the ambient temperature is high. The photoelectric sensor 11, on the other hand, has many electrical components located on the side away from the main unit 1, thus being protected and having a long lifespan. The reflector 12 does not require a power supply cable, eliminating the possibility of protection failure or accidental shutdown due to damage to wiring and components caused by high temperatures and vibration. The reflector 12 can be installed in areas with high temperatures, high dust levels, and significant vibration, making it more suitable for use in harsh environments like those of the press. The photoelectric sensor 11 emits a beam of light, detecting lines rather than surfaces, preventing false detection of small objects and subsequent malfunctions.
[0033] To ensure the light signal strength of the photoelectric sensor 11, the distance between the photoelectric sensor 11 and the reflector 12 shall not exceed 30m. A sub-area of the risk zone may have one or more entrances and / or exits, with multiple entrances being 2, 3, 4, 5, 6, 7, or 8. The width of the entrances and / or exits of a sub-area of the risk zone can range from 1 to 30m, for example, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 22, 25, 27, or 30m. When the entrances and / or exits of a sub-area of the risk zone are used for personnel access, the width ranges from 2 to 5m; when the entrances and / or exits of a sub-area of the risk zone are used for equipment or vehicle access, the width ranges from 5 to 30m.
[0034] The response system includes a PLC controller (programmable logic controller) and an alarm unit on the operator unit 2. The PLC controller enables automated control of the operator unit 2, and the alarm unit provides alarm information. The PLC controller and the alarm unit are electrically connected, and the PLC controller is also electrically connected to the photoelectric sensor 11. Communication connections exist between different operator units 2 to facilitate coordinated control. These communication connections include at least one of wireless and wired communication connections, allowing for various communication methods. Wireless communication connections include at least one of GPRS, Bluetooth, RF, and 3G / 4G / 5G communication connections. Each operator unit 2 has its own independent PLC controller, which can control its assigned operator unit 2 and can also control other operator units 2 through communication linkage. Refer to the attached electrical schematic diagram of the PLC controller. Figure 2 , 3 .
[0035] Taking the first risk zone as an example, once personnel enter the entrance and / or exit of the first risk zone, they block the light beam, causing the photoelectric sensor 11 to be unable to receive the light beam reflected by the reflector 12 for a certain period of time. The photoelectric sensor 11 sends data information about personnel entering the first risk zone to the PLC controller of the response system. The PLC controller of the response system controls the first manipulator in the first risk zone to stop running (that is, stop moving) and the alarm unit to sound an alarm, eliminating the mechanical injury that the first manipulator may cause to personnel. The alarm reminds personnel to enter the first risk zone. The stopped first manipulator cannot start automatically. It will only start running again when the personnel leave the first risk zone, turn on the field reset switch (specifically the first field reset switch), and the remote control console turns on the manipulator reset switch (specifically the first manipulator reset switch). It should be noted that this application only stops the movement of the first manipulator, without affecting the normal operation of the host machine 1 or the second manipulator. This eliminates the safety risk without affecting the timeliness and continuous production requirements of the host machine 1 and the second manipulator. Similarly, the entry and / or exit points for personnel entering the second risk zone (the Nth risk zone) operate in the same manner as those for the first risk zone, and will not be elaborated upon here.
[0036] The alarm unit can be a buzzer or a highlighted alarm message, such as "Entering a risk area, please be careful"; or it can be both, meaning the alarm unit can sound a buzzer and display the highlighted "Entering a risk area, please be careful" message.
[0037] The detection system also includes a field reset switch installed at the entrance and / or exit of the sub-area of the risk zone and a manipulator reset switch located on the remote control console. The field reset switch is located on the sub-area side of the risk zone and is set accordingly to the sub-area of the risk zone. The manipulator reset switch is located on the remote control console side. The field reset switch and the manipulator reset switch are electrically connected to the manipulator of the corresponding compressor located in the sub-area of the risk zone in series. The installation height of the field reset switch can be different from or the same as the height of the photoelectric sensor 11. For ease of operation, the installation height of the field reset switch can be set in the range of 1200-1600mm. The field reset switch and the manipulator reset switch are electrically connected to the manipulator to restore the normal operation of the manipulator.
[0038] Specifically, taking the first and second risk zones as examples, the working mode of the Nth risk zone is the same as that of the first risk zone. The field reset switches include a first field reset switch located at the entrance and / or exit of the first risk zone, a second field reset switch located at the entrance and / or exit of the second risk zone, and so on, and an Nth field reset switch located at the entrance and / or exit of the Nth risk zone. The operator reset switches include a first operator reset switch, a second operator reset switch, and so on, and an Nth operator reset switch located at the remote operator console, where N is the maximum number of operator consoles. The first field reset switch and the first operator reset switch are electrically connected to the first operator console to restore the normal operation of the first operator console. When the last person in the first risk zone leaves the first risk zone, the first field reset switch is activated at the entrance and / or exit of the first risk zone, and after the first operator reset switch is activated at the operator console, the operation of the first operator console is restored without affecting the normal operation of other operator consoles. The second field reset switch and the second operator reset switch are electrically connected to the second operator, used to restore the normal operation of the second operator. Their operation is the same as that of the first operator in the first risk zone. Similarly, the Nth field reset switch in the Nth risk zone and the Nth operator reset switch on the remote control console are electrically connected to the Nth operator, used to restore the normal operation of the Nth operator. When the last person leaves the Nth risk zone, the Nth field reset switch is activated at the entrance and / or exit of the Nth risk zone, and the Nth operator reset switch is activated on the control console, restoring the operation of the Nth operator. The operation mode of the Nth risk zone is the same as that of the first risk zone. For safety, the operator in this application employs a double-safety setup. That is, the Nth operator only resumes operation when both the Nth field reset switch and the Nth operator reset switch are activated, protecting personnel safety and preventing a dangerous accident from occurring if only one of the two switches is activated while personnel are still present. In other words, the field reset switch includes a field reset switch located at the entrance and / or exit of a sub-area of the risk zone, and the operator reset switch includes an operator reset switch in a sub-area of the remote operator console corresponding to the field reset switch. When the last person in a sub-area leaves the sub-area, the field reset switch and the operator reset switch are electrically connected to an operator. Only after both the field reset switch in the sub-area and the corresponding operator reset switch in the remote operator console are turned on will the operator in the sub-area restart.
[0039] It should be noted that this safety protection device has an alarm zone, which is a sub-zone of the risk zone where personnel may enter. Once personnel are detected entering the entrance and / or exit of the alarm zone, the response system immediately stops the operation of the operator corresponding to the alarm zone (sub-zone) and issues an alarm through the alarm unit. The field reset switch includes the field reset switch corresponding to the alarm zone, and the operator reset switch includes the operator reset switch corresponding to the alarm zone located on the remote control panel. The field reset switch and the operator reset switch corresponding to the alarm zone are electrically connected to the operator corresponding to the alarm zone. Only after both the field reset switch and the operator reset switch corresponding to the alarm zone are turned on will the operator corresponding to the alarm zone resume operation.
[0040] It should be noted that the forging press of this application also includes an operating console for remotely controlling the manipulator 2. The operating console is communicatively connected to the host machine 1 and to the manipulator 2. Specifically, the operating console is communicatively connected to the first manipulator, the second manipulator, ..., the Nth manipulator. The communication connection includes at least one of wireless communication and wired communication, facilitating various communication methods. Preferably, this application uses a wireless communication module. The wireless communication connection includes at least one of GPRS communication, Bluetooth communication, RF radio frequency communication, and 3G&4G&5G communication, facilitating the communication connection between the operating console and the manipulator 2, enabling the manipulator 2 provided by this application to have remote control capabilities and improving scalability.
[0041] When using, such as Figure 2 As shown, within the first risk zone, the photoelectric sensors include a first photoelectric sensor at the entrance and a second photoelectric sensor at the exit. The first photoelectric sensor emits a first photoelectric sensor signal, and the second photoelectric sensor emits a second photoelectric sensor signal. If either of these two signals is blocked, it can trigger the trigger of the PLC controller of the first operator machine, stopping the operation of the first operator machine. When both the first field reset switch and the first operator machine reset switch are turned on, they respectively emit the first field reset switch signal and the first operator machine reset switch signal, triggering the trigger of the PLC controller of the first operator machine, and resuming the operation of the first operator machine.
[0042] like Figure 3As shown, in the second risk zone, the photoelectric sensors include a first photoelectric sensor at the entrance and a second photoelectric sensor at the exit. The first photoelectric sensor emits a first photoelectric sensor signal, and the second photoelectric sensor emits a second photoelectric sensor signal. If either of these two signals is blocked, it can trigger the trigger of the PLC controller of the second operator, stopping the operation of the second operator. When both the second field reset switch and the second operator reset switch are turned on, they respectively emit the second field reset switch signal and the second operator reset switch signal, triggering the trigger of the PLC controller of the second operator, and resuming the operation of the second operator.
[0043] As a possible implementation method, the forging press can be a high-speed forging press, a free forging press, a radial forging press, etc.
[0044] In one specific embodiment, the installation height of the photoelectric sensor 11 is in the range of 400mm-600mm. The photoelectric sensor 11 is connected to a DC24V power supply, and the photoelectric sensor 11 and the PLC controller of the manipulator 2 are connected by a switch signal. The size of the reflector 12 is selected as 150mm×150mm. The PLC controller control program is programmed so that as long as the photoelectric sensor 11 does not detect the light beam reflected by the reflector 12, it sends data information to the manipulator 2 that a person has entered the first risk area. The PLC controller controls the first manipulator to stop running and the alarm unit to sound an alarm. When the person in the risk area leaves the first risk area, the first field reset switch is activated, and the first manipulator reset switch is activated on the operator console, after which the first manipulator restarts.
[0045] This application provides a safety protection device for the moving area of a press, which has a wide range of applications and is suitable for various presses such as high-speed forging machines, free forging machines, and radial forging machines. The photoelectric sensor 11 used in this application emits a beam of light and detects lines rather than surfaces, thus avoiding false detection of small objects and preventing misoperation. The reflector does not require wiring and can be installed in areas with high temperature, high dust, and high vibration, making it more suitable for use in the harsh environment of the press. When personnel enter the first risk area, this application only stops the operation of the first operating machine in the first risk area, without affecting the production of the main machine and the second operating machine, thus eliminating safety risks without affecting the timeliness and continuous production requirements of the main machine and the second operating machine.
[0046] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features of the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0047] For those skilled in the art, this invention can be implemented through other embodiments that do not depart from its spirit or essential characteristics. It is obvious that this invention is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, all embodiments are merely illustrative and not exhaustive, and should be considered exemplary and non-limiting. The scope of this invention is defined by the appended claims rather than the foregoing description, and therefore all changes falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims. All changes within the scope of this invention or its equivalents are included in this invention.
Claims
1. A safety protection device for the moving area of a press, characterized in that, It includes a detection system and a response system, the detection system and the response system being electrically connected; The safety protection device has a first area and a second area, the first area being a safe area and the second area being a risk area; the number of sub-areas of the risk area is the same as the number of operating machines of the press; When personnel are located at the entrance and / or exit of a sub-area of the risk zone and are detected by the detection system, the response system stops the operation of the operating machine in that sub-area of the risk zone and issues an alarm through the alarm unit; The detection system includes a photoelectric sensor and a reflector. The reflector is used to reflect light signals from the photoelectric sensor. The photoelectric sensor is used to receive light signals from the reflector. The photoelectric sensor and the response system are electrically connected.
2. The safety protection device according to claim 1, characterized in that, The photoelectric sensor and the reflector are positioned at the same height. One of the photoelectric sensor and the reflector is disposed on one side of the entrance to the sub-region of the risk zone, and the other is disposed on the other side of the entrance to the sub-region of the risk zone; and / or, One of the photoelectric sensor and the reflector is located on one side of the exit of the sub-region of the risk zone, and the other is located on the other side of the exit of the sub-region of the risk zone.
3. The safety protection device according to claim 1, characterized in that, The reflector is installed at the entrance of the sub-region of the risk area on the side of the main unit near the press, and the photoelectric sensor is installed at the entrance of the sub-region of the risk area on the side of the main unit away from the press; and / or, The reflector is installed on the side of the main unit near the press at the outlet of the sub-area of the risk zone, and the photoelectric sensor is installed on the side of the main unit away from the press at the outlet of the sub-area of the risk zone.
4. The safety protection device according to claim 1, characterized in that, The distance between the photoelectric sensor and the reflector does not exceed 30m.
5. The safety protection device according to claim 1, characterized in that, The response system includes a PLC controller and an alarm unit on the operator unit; the PLC controller and the alarm unit are electrically connected, and the PLC controller and the photoelectric sensor are electrically connected.
6. The safety protection device according to claim 1, characterized in that, The detection system also includes a field reset switch and a manipulator reset switch; The on-site reset switch is located on the sub-area side of the risk zone and is configured corresponding to the sub-area of the risk zone; the manipulator reset switch is located on the remote manipulator side. The field reset switch and the operator reset switch are electrically connected to the operator of the compressor located in the corresponding sub-area of the risk zone, respectively, in a series operation mode.
7. The safety protection device according to claim 1, characterized in that, The installation height range of the photoelectric sensor is 400mm-600mm.
8. The safety protection device according to claim 1, characterized in that, The alarm unit is a buzzer and / or a highlighted alarm message.
9. The safety protection device according to claim 6, characterized in that, The installation height range of the field reset switch is set between 1200-1600mm.
10. The safety protection device according to claim 1, characterized in that, The width of the entrance and / or exit of the sub-area of the risk zone ranges from 1 to 30 meters.