Area safety protection system of open mill

Abstract

The invention provides a regional safety protection system for an open mill. The system comprises a mechanical emergency stop module, a photoelectric monitoring module, a space interlocking module, a radar monitoring module and an emergency stop control module. The mechanical emergency stop module is used for responding to an emergency stop signal triggered manually or automatically by equipment abnormity; the photoelectric monitoring modules are arranged on the two sides of a cooling drum belt and used for detecting light beam signals. The space interlocking module comprises a safety fence and a safety door with a magnetic switch and is used for monitoring the opening state of a door body. The radar monitoring module comprises millimeter wave radars arranged on the two sides of the roller and is used for monitoring the intrusion situation of regional personnel in real time. The sudden stop control module executes sudden stop actions in a grading mode according to signals triggered by all the modules. The system is further provided with a reset module used for executing system self-checking and restarting after sudden stop is relieved. Safety accidents in the operation process of the open mill can be effectively prevented, and the production safety is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of equipment safety control, and particularly relates to a safety protection system for the open mill area. Background Art

[0002] In the tire manufacturing industry, the rubber mixing process is the core link determining product quality. As a key piece of equipment, the open mill undertakes core process tasks such as rubber compound mixing and plasticization. In the working area of the open mill, there are high-speed rollers, high-temperature rubber compounds, and frequent human-machine interaction operations. Traditional safety protection measures (such as mechanical fences, emergency stop buttons, etc.) are no longer sufficient to meet the requirements of modern safe production.

[0003] There are mainly three defects in the existing technology: First, the protection range is limited, and complex areas such as the dynamic danger area between the rollers and the feeding port are not adequately covered; second, the response speed is lagging, and sudden risks such as personnel straying into the area and equipment abnormalities cannot be recognized in real time; third, the degree of intelligence is low, lacking the ability of automatic identification and analysis. Therefore, there is an urgent need for a safety protection logic that can automatically trigger an emergency stop when detecting that a person enters the working area of the open mill, preventing employees from straying into the equipment working area before turning off the equipment.

[0004] Therefore, the existing technology still needs to be further developed. Summary of the Invention

[0005] The purpose of the present invention is to overcome the above technical deficiencies and provide a safety protection system for the open mill area to solve the problems existing in the prior art.

[0006] To achieve the above technical objectives, according to the first aspect of the present invention, a safety protection system for the open mill area is provided, including: A mechanical emergency stop module for responding to an emergency stop signal manually triggered by a user or automatically triggered by equipment abnormalities; An optoelectronic monitoring module arranged on both sides of the cooling drum belt in the open mill area for detecting the beam signal in the cooling drum belt area; A space interlock module including a safety fence arranged around the open mill rollers and a safety door provided with a magnetic switch, and the magnetic switch is used to monitor the opening state of the door body; A radar monitoring module for real-time monitoring of whether there is a personnel intrusion in the open mill area; An emergency stop control module communicatively connected to the mechanical emergency stop module, optoelectronic monitoring module, space interlock module, and radar monitoring module, and the emergency stop control module is used to hierarchically execute an emergency stop action according to the emergency stop signals triggered by the mechanical emergency stop module, optoelectronic monitoring module, space interlock module, and radar monitoring module.

[0007] Specifically, the mechanical emergency stop module includes a roller emergency stop device and a cooling drum belt emergency stop device; The roller emergency stop device is used to control the roller to stop running, and the cooling drum belt emergency stop device is used to control the cooling drum belt to stop running.

[0008] Specifically, the roller emergency stop device includes a first emergency stop pull rope and a second emergency stop pull rope, which are respectively arranged in the two end regions of the roll of the mixer, and are used to manually control the roll of the mixer to stop running.

[0009] Specifically, the cooling drum belt emergency stop device includes a third emergency stop pull rope, which is arranged in the upper region of the cooling drum belt, and the third emergency stop pull rope is configured with an automatic trigger mode and a manual trigger mode.

[0010] Specifically, in the automatic trigger mode, when the height of the rubber material accumulation reaches the height of the third emergency stop pull rope, it automatically touches the emergency stop pull rope, and then automatically triggers the emergency stop signal of the third emergency stop pull rope, that is, the cooling drum belt stops running; In the manual trigger mode, when the third emergency stop pull rope is manually pulled down, the emergency stop signal of the third emergency stop pull rope is triggered, that is, the cooling drum belt stops running.

[0011] Specifically, the photoelectric monitoring module includes a reflection photoelectric sensor group, which is arranged on both sides of the cooling drum belt. The reflection photoelectric sensor group includes a transmitting end and a receiving end. When any light beam is detected to be blocked, the photoelectric monitoring module synchronously triggers the emergency stop control module to control the cooling drum belt to stop running.

[0012] Specifically, the safety doors are arranged on both sides of the safety fence. When the magnetic switch detects that the safety door is opened, it triggers the emergency stop signal of the emergency stop control module, and synchronously controls the roll of the mixer and the cooling drum belt to stop running.

[0013] Specifically, the radar monitoring module includes a first millimeter-wave radar and a second millimeter-wave radar, which are respectively arranged on both sides of the roll of the mixer and are used to detect whether there is any personnel intrusion in the area of the roll of the mixer.

[0014] Specifically, the first millimeter-wave radar is configured with a normal mode and a maintenance mode; When the first millimeter-wave radar switches to the normal mode, it judges whether there is any personnel intrusion in the current area. If so, it immediately triggers the emergency stop control module; When the first millimeter-wave radar switches to the maintenance mode, it judges whether there is any personnel intrusion in the current area. If so, it controls the roll to reduce the speed to a preset safe speed, and performs manual reset after the personnel leave to resume the operation of the roll.

[0015] Specifically, the system further includes a reset module, which is communicatively connected to the mechanical emergency stop module, the photoelectric monitoring module, the spatial interlock module, the radar monitoring module, and the emergency stop control module. The reset module is used to perform a system self-check after the emergency stop is released, and then restart the system after the system self-check passes.

[0016] Beneficial effects: The present invention provides a safety protection system for the open mill area. Through multi-dimensional devices such as a mechanical emergency stop module, a photoelectric monitoring module, a spatial interlock module, and a radar monitoring module, it realizes zonal protection for the roller area, belt area, and maintenance passage in the open mill area. The dual-trigger emergency stop pull rope has both the ability of automatic response to equipment failures and manual intervention; the first-level priority emergency stop logic ensures that the trigger signal stops emergently in milliseconds, and the reflected photoelectric and millimeter-wave radar achieve immediate emergency stop when the light beam is blocked; the hierarchical protection strategy takes into account both production efficiency and maintenance requirements, and the radar in front of the roller switches between two modes to avoid frequent shutdowns affecting the production rhythm. By complementing active intervention and passive protection, it breaks through the passive response mode of traditional protection, and through the active protection mechanism of intelligent perception and rapid interlock, fundamentally eliminates potential safety hazards in human-machine interaction, and greatly improves the safety and reliability of the present invention. Description of the drawings

[0017] Figure 1 is a schematic diagram of the composition of the safety protection system for the open mill area provided in the specific embodiment of the present invention; Figure 2 is a layout diagram of the safety devices of the open mill provided in the specific embodiment of the present invention; Figure 3 is a flow chart of the safety control logic of the open mill provided in the specific embodiment of the present invention; Among them, the reference numerals of the above drawings are as follows: 100, mechanical emergency stop module; 200, photoelectric monitoring module; 300, spatial interlock module; 400, radar monitoring module; 500, emergency stop control module; 310, safety fence; 320, safety door; 1, first millimeter-wave radar; 2, second millimeter-wave radar; 3, right reflected photoelectric sensor; 4, right reflected photoelectric reflector; 5, left reflected photoelectric sensor; 6, left reflected photoelectric reflector; 7, first emergency stop pull rope; 8, second emergency stop pull rope; 9, third emergency stop pull rope; 10, cooling drum belt. Specific embodiments

[0018] To enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. Based on the embodiments in this application, other similar embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application. In addition, the directional terms mentioned in the following embodiments, such as "up", "down", "left", "right", etc., are only references to the directions in the accompanying drawings. Therefore, the directional terms used are for illustration rather than limitation of the present invention.

[0019] The present invention will be further described below in conjunction with the accompanying drawings and preferred embodiments.

[0020] Embodiment 1 Please refer to Figure 1 , this embodiment provides a safety protection system for the open mill area, including a mechanical emergency stop module 100, an optoelectronic monitoring module 200, a space interlock module 300, a radar monitoring module 400, and an emergency stop control module 500.

[0021] Among them, the mechanical emergency stop module 100 is used to respond to the emergency stop signal triggered manually by the user or automatically due to equipment abnormalities. The mechanical emergency stop module 100 includes a roller emergency stop device and a cooling drum belt 10 emergency stop device. The roller emergency stop device is used to control the roller to stop running, and the cooling drum belt 10 emergency stop device is used to control the cooling drum belt 10 to stop running. The roller emergency stop device includes a first emergency stop pull rope 7 and a second emergency stop pull rope 8, and the first emergency stop pull rope 7 and the second emergency stop pull rope 8 are respectively arranged in the two end areas of the open mill roller, and are used to manually control the open mill roller to stop running. The cooling drum belt 10 emergency stop device includes a third emergency stop pull rope 9, and the third emergency stop pull rope 9 is arranged in the upper area of the cooling drum belt 10. The third emergency stop pull rope 9 is configured with an automatic trigger mode and a manual trigger mode. The automatic trigger mode is that when the height of the rubber material accumulation reaches the height of the third emergency stop pull rope 9, it automatically touches the emergency stop pull rope, and then automatically triggers the emergency stop signal of the third emergency stop pull rope 9, that is, the cooling drum belt 10 stops running. The manual trigger mode is that when the third emergency stop pull rope 9 is manually pulled down, the emergency stop signal of the third emergency stop pull rope 9 is triggered, that is, the cooling drum belt 10 stops running.

[0022] In some specific embodiments, refer to Figure 2, the first emergency stop pull rope 7 is arranged in the front upper oblique area of the roll of the open mill, and the second emergency stop pull rope 8 is arranged in the rear upper oblique area of the roll of the open mill. Both the first emergency stop pull rope 7 and the second emergency stop pull rope 8 can be pulled by personnel according to emergency needs, so as to avoid injury when personnel enter the equipment working area; the third emergency stop pull rope 9 is arranged above the cooling drum belt 10 and has dual triggering conditions. When the rubber material on the cooling drum belt 10 is abnormally curled and the rubber material accumulates too much, at this time the rubber material automatically touches the third emergency stop pull rope 9, thereby triggering the cooling drum belt 10 to stop running, or when personnel manually pull down the third emergency stop pull rope 9 emergently, the cooling drum belt 10 also responds and stops running. According to the above solution, by setting manual emergency stop pull ropes obliquely above the front and rear ends of the open mill to prevent personnel from straying into dangerous areas, and at the same time adding an emergency stop device with dual functions of automatic triggering by abnormal rubber material accumulation and manual emergency stop in the area of the cooling drum belt 10, the dual safety guarantees of active protection of personnel and passive monitoring of equipment abnormalities are realized, and the risk of personnel injury and abnormal material loss during equipment operation are significantly reduced.

[0023] It should be further noted that once the first emergency stop pull rope 7, the second emergency stop pull rope 8, and the third emergency stop pull rope 9 are triggered, all equipment stops running, which further ensures the safety of equipment operation, prevents personnel from straying into dangerous areas, and thus causes personnel injuries, greatly improving the safety and reliability of the present invention.

[0024] In this embodiment, the photoelectric monitoring module 200 is arranged on both sides of the cooling drum belt 10 in the open mill area for detecting the light beam signal in the area of the cooling drum belt 10. The photoelectric monitoring module 200 includes a reflective photoelectric sensor group. The reflective photoelectric sensor group is arranged on both sides of the cooling drum belt 10. The reflective photoelectric sensor group includes a transmitting end and a receiving end. When any light beam is detected to be blocked, the photoelectric monitoring module 200 synchronously triggers the emergency stop control module 500 to control the cooling drum belt 10 to stop running.

[0025] In some specific embodiments, see Figure 2, a set of reflective photoelectric sensors is installed on each side of the cooling drum belt 10, with a total of 2 sets, namely the right reflective photoelectric sensor 3 and the left reflective photoelectric sensor 5. On one side of the right reflective photoelectric sensor 3, there is a right reflective photoelectric reflector 4, which is used in combination to detect whether there is an object between the reflective photoelectric sensor and the reflective photoelectric reflector. On one side of the left reflective photoelectric sensor 5, there is a left reflective photoelectric reflector 6. When any light beam is blocked, it means that a person has entered or a foreign object has fallen, and the emergency stop process is immediately triggered to avoid damage to personnel or equipment. According to the above technical solution, by setting a set of reflective photoelectric sensors on both sides of the cooling drum belt 10 to monitor the light beam blocking signal in real time, when an abnormal block occurs, the emergency stop control module 500 is automatically triggered, which can timely block the danger caused by personnel straying or foreign object interference and effectively improve the operation safety of the equipment.

[0026] In this embodiment, the space interlock module 300 includes a safety fence 310 arranged around the roll of the open mill and a safety door 320 provided with a magnetic switch. The magnetic switch is used to monitor the opening state of the door body. The safety door 320 is arranged on both sides of the safety fence 310. When the magnetic switch detects that the safety door 320 is opened, the emergency stop signal of the emergency stop control module 500 is triggered, and the rolls of the open mill and the cooling drum belt 10 are synchronously controlled to stop running.

[0027] In some specific embodiments, the safety fence 310 can be selected as a protective net, that is, a protective net is arranged around the roll area of the open mill, and safety doors 320 with magnetic switches are configured at the front and rear ends. When the door body of the safety door 320 is opened, the emergency stop interlock is directly triggered. According to the above technical solution, through the interlock design of the safety fence 310 and the magnetic switch, the state of the safety door 320 is monitored in real time during the operation of the equipment, and when the door body is abnormally opened, the equipment is immediately stopped, realizing double protection of physical isolation and automatic control, and effectively blocking the risk of personnel straying into high-risk areas.

[0028] In this embodiment, refer to Figure 2 , the radar monitoring module 400 is used to monitor in real time whether there is a personnel intrusion in the open mill area. The radar monitoring module 400 includes a first millimeter-wave radar 1 and a second millimeter-wave radar 2. The first millimeter-wave radar 1 and the second millimeter-wave radar 2 are respectively arranged on both sides of the roll of the open mill to detect whether there is a personnel intrusion in the roll area of the open mill. The first millimeter-wave radar 1 is configured with a normal mode and a maintenance mode. When the first millimeter-wave radar 1 switches to the normal mode, it judges whether there is a personnel intrusion in the current area. If so, the emergency stop control module 500 is immediately triggered. When the first millimeter-wave radar 1 switches to the maintenance mode, it judges whether there is a personnel intrusion in the current area. If so, the roll is controlled to reduce speed to a preset safe speed, and after the personnel leave, a manual reset is performed to resume the operation of the roll.

[0029] It can be understood that the first millimeter-wave radar 1 is arranged in the area in front of the roller, and a dual-mode switching knob is arranged in the control cabinet. When switching to the normal mode, if a person is detected to enter, the emergency stop is immediately triggered. When switching to the maintenance mode, if a person is detected to enter, the roller is automatically decelerated to the preset safe rotation speed. In this embodiment, the preset safe rotation speed is preferably 10 Hz, and manual restoration is required after leaving the area. According to the above technical solution, by arranging dual millimeter-wave radars on both sides of the roller of the open mill, combined with the hierarchical response mechanism of emergency stop in the normal mode and automatic deceleration to the safe rotation speed of 10 Hz in the maintenance mode and manual resetting required, intelligent monitoring of personnel intrusion and dynamic risk control are realized, making the present invention take into account both production safety and maintenance flexibility.

[0030] In this embodiment, the emergency stop control module 500 is communicatively connected to the mechanical emergency stop module 100, the photoelectric monitoring module 200, the space interlock module 300, and the radar monitoring module 400. The emergency stop control module 500 is configured to perform an emergency stop action in a hierarchical manner according to the emergency stop signals triggered by the mechanical emergency stop module 100, the photoelectric monitoring module 200, the space interlock module 300, and the radar monitoring module 400.

[0031] In this embodiment, the open mill area safety protection system further includes a reset module. The reset module is communicatively connected to the mechanical emergency stop module 100, the photoelectric monitoring module 200, the space interlock module 300, the radar monitoring module 400, and the emergency stop control module 500. The reset module is configured to perform a system self-check after the emergency stop is released, and then restart after the system self-check passes.

[0032] It can be understood that in this embodiment, the emergency stop signal is set to the first priority. After the emergency stop is triggered, the response device is immediately locked until manual reset. At the same time, the actions after the above emergency stop trigger include: immediately cutting off the motor power, performing a brake, stopping the roller and the belt from running, and synchronously activating the sound and light alarm, etc. The specific reset process is emergency stop release, control cabinet reset button (falling edge trigger), system self-check, restart confirmation. By integrating the emergency stop signals of multiple modules such as mechanical, photoelectric, space, and radar and setting them to the highest priority, when triggered, the power is immediately cut off globally in a linked manner, the braking and shutdown are performed, and the sound and light alarm are activated, and forced manual reset and system self-check are required before restarting, thus building a multi-level safety protection system of "active braking + passive alarm + manual confirmation", which greatly improves the intelligence, safety, and reliability of the present invention.

[0033] In this embodiment, refer to Figure 3 , the working process of the open mill area safety protection system is as follows: After starting the mixer, the roller emergency stop device in the mechanical emergency stop module 100 is installed at both ends of the mixer rollers. The operator can pull the first emergency stop rope 7 or the second emergency stop rope 8 to achieve emergency stop of the rollers. The third emergency stop rope 9 in the emergency stop device of the cooling drum belt 10 is installed above the cooling drum belt 10. When the stacking height of the rubber compound reaches the position of the third emergency stop rope 9, an emergency stop signal will be automatically triggered; the operator can also manually pull the third emergency stop rope 9 to trigger an emergency stop. When pulling the emergency stop rope at the front and rear rollers or the cooling drum belt 10, an emergency stop is triggered, and the power is cut off, the braking is executed to stop the machine, and the audible and visual alarm is triggered. At the same time, the mixer rollers and the cooling drum belt 10 stop running synchronously; The photoelectric monitoring module 200 forms a beam protection area through the reflective photoelectric sensor groups arranged on both sides of the cooling drum belt 10. When a person or an object enters this area and causes the beam to be blocked, the system immediately triggers an emergency stop signal, controls the cooling drum belt 10 to stop running, prevents personnel from being involved or objects from causing equipment damage, and cuts off the power, executes braking to stop the machine, and the audible and visual alarm; The space interlock module 300 physically isolates the mixer roller area through a protective net (safety fence 310) and a safety door 320. The magnetic switch on the safety door 320 monitors the door state in real time. When the safety door 320 in front of and behind the protective net is opened, the magnetic switch immediately triggers an emergency stop signal, and the rollers and the cooling drum belt 10 stop running synchronously to ensure that the equipment is in a stopped state when personnel safely enter the area; The radar monitoring module 400 conducts all-round monitoring of the mixer area through the first millimeter-wave radar 1 and the second millimeter-wave radar 2 arranged on both sides of the rollers. When detecting personnel intrusion, different safety strategies are executed according to the current working mode. In the normal working mode, detecting personnel intrusion immediately triggers an emergency stop; in the maintenance mode, detecting personnel intrusion reduces the roller speed to the safe rotational speed (10Hz) to facilitate the safe operation of maintenance personnel. After the personnel leave, the normal rotational speed needs to be manually restored; The emergency stop control module 500, as the control center of the system, receives signals from each module and executes corresponding emergency stop actions according to different trigger sources and danger levels. For example, when the photoelectric monitoring module 200 is triggered, only the cooling drum belt 10 stops; when the space interlock module 300 is triggered, both the rollers and the cooling drum belt 10 stop; when the radar monitoring module 400 is triggered in the normal mode, a full-system emergency stop is executed; when triggered in the maintenance mode, only the roller speed is reduced to the safe value; After the emergency stop is released, the reset module conducts self-checks on all parts of the system. After confirming that all safety conditions are met, the system is allowed to restart the mixer to prevent accidental startup of the equipment when potential safety hazards have not been eliminated; It should be noted here that the safety protection system for the open mill area in this embodiment realizes all-round safety monitoring and protection of the open mill area through multiple safety protection measures, effectively preventing personnel injuries and equipment damage accidents. Each module of the system works in coordination to form a complete safety protection network, greatly improving the safety of open mill operation.

[0034] Embodiment 2 Please refer to Figure 1 , this embodiment provides a safety protection system for the open mill area, including a mechanical emergency stop module 100, a photoelectric monitoring module 200, a space interlock module 300, a radar monitoring module 400, and an emergency stop control module 500.

[0035] Furthermore, the mechanical emergency stop module 100 is used to respond to the emergency stop signal triggered manually by the user or automatically due to equipment abnormalities. The mechanical emergency stop module 100 includes a roller emergency stop device and a cooling drum belt 10 emergency stop device. The roller emergency stop device is used to control the roller to stop running, and the cooling drum belt 10 emergency stop device is used to control the cooling drum belt 10 to stop running. The roller emergency stop device includes a first emergency stop pull rope 7 and a second emergency stop pull rope 8, and the first emergency stop pull rope 7 and the second emergency stop pull rope 8 are respectively arranged in the two end areas of the open mill roller to manually control the roller device to stop running. The cooling drum belt 10 emergency stop device includes a third emergency stop pull rope 9, and the third emergency stop pull rope 9 is arranged in the upper area of the cooling drum belt 10. The third emergency stop pull rope 9 is configured with an automatic trigger mode and a manual trigger mode. The automatic trigger mode is that when the height of the rubber material accumulation reaches the height of the third emergency stop pull rope 9, it automatically touches the emergency stop pull rope, and then automatically triggers the emergency stop signal of the third emergency stop pull rope 9, that is, the cooling drum belt 10 stops running. The manual trigger mode is that when the third emergency stop pull rope 9 is manually pulled down, the emergency stop signal of the third emergency stop pull rope 9 is triggered, that is, the cooling drum belt 10 stops running.

[0036] In this embodiment, the photoelectric monitoring module 200 is arranged on both sides of the cooling drum belt 10 in the open mill area to detect the beam signal in the cooling drum belt 10 area. The photoelectric monitoring module 200 includes a reflection photoelectric sensor group, and the reflection photoelectric sensor group is arranged on both sides of the cooling drum belt 10. The reflection photoelectric sensor group includes a transmitting end and a receiving end. When any beam is detected to be blocked, the photoelectric monitoring module 200 synchronously triggers the emergency stop control module 500 to control the cooling drum belt 10 to stop running.

[0037] In this embodiment, the space interlock module 300 includes a safety fence 310 disposed around the roll of the mill and a safety door 320 provided with a magnetic switch. The magnetic switch is used to monitor the opening state of the door body. The safety door 320 is disposed on both sides of the safety fence 310. When the magnetic switch detects that the safety door 320 is opened, it triggers an emergency stop signal of the emergency stop control module 500 to synchronously control the rolls of the mill and the cooling drum belt 10 to stop running.

[0038] In this embodiment, the radar monitoring module 400 is used to monitor in real time whether there is a personnel intrusion in the area of the mill. The radar monitoring module 400 includes a first millimeter-wave radar 1 and a second millimeter-wave radar 2. The first millimeter-wave radar 1 and the second millimeter-wave radar 2 are respectively disposed on both sides of the roll of the mill to detect whether there is a personnel intrusion in the area of the roll of the mill. The first millimeter-wave radar 1 is configured with a normal mode and a maintenance mode. When the first millimeter-wave radar 1 switches to the normal mode, it determines whether there is a personnel intrusion in the current area. If so, it immediately triggers the emergency stop control module 500. When the first millimeter-wave radar 1 switches to the maintenance mode, it determines whether there is a personnel intrusion in the current area. If so, it controls the roll to reduce the speed to a preset safe speed and performs a manual reset after the personnel leave to resume the operation of the roll.

[0039] In this embodiment, the emergency stop control module 500 is communicatively connected to the mechanical emergency stop module 100, the photoelectric monitoring module 200, the space interlock module 300, and the radar monitoring module 400. The emergency stop control module 500 is used to perform an emergency stop action in a hierarchical manner according to the emergency stop signals triggered by the mechanical emergency stop module 100, the photoelectric monitoring module 200, the space interlock module 300, and the radar monitoring module 400.

[0040] In this embodiment, the system further includes a reset module. The reset module is communicatively connected to the mechanical emergency stop module 100, the photoelectric monitoring module 200, the space interlock module 300, the radar monitoring module 400, and the emergency stop control module 500. The reset module is used to perform a system self-check after the emergency stop is released, and then restart after the system self-check passes.

[0041] In this embodiment, different from the first embodiment, the first millimeter-wave radar 1 and the second millimeter-wave radar 2 adopt different installation methods. The first millimeter-wave radar 1 is installed above the front side of the roll of the mill and monitors the operation area downward at an angle of 45 degrees. The second millimeter-wave radar 2 is installed above the rear side of the roll of the mill and monitors the rear area downward at an angle of 45 degrees. This installation method forms an overlapping monitoring area, eliminates the monitoring blind area, and improves the accuracy of personnel intrusion detection.

[0042] Embodiment Three Please refer to Figure 1, this embodiment provides a safety protection system for an open mill area, including a mechanical emergency stop module 100, an optoelectronic monitoring module 200, a space interlock module 300, a radar monitoring module 400, and an emergency stop control module 500.

[0043] In this embodiment, the mechanical emergency stop module 100 is used to respond to an emergency stop signal triggered manually by the user or automatically due to equipment abnormalities. The mechanical emergency stop module 100 includes a roller emergency stop device and a cooling drum belt 10 emergency stop device. The roller emergency stop device is used to control the roller to stop running, and the cooling drum belt 10 emergency stop device is used to control the cooling drum belt 10 to stop running. The roller emergency stop device includes a first emergency stop rope 7 and a second emergency stop rope 8, which are respectively arranged in the two end areas of the open mill roller and are used to manually control the roller device to stop running. The cooling drum belt 10 emergency stop device includes a third emergency stop rope 9, which is arranged in the upper area of the cooling drum belt 10. The third emergency stop rope 9 is configured with an automatic trigger mode and a manual trigger mode. The automatic trigger mode is that when the height of the rubber material accumulation reaches the height of the third emergency stop rope 9, it automatically touches the emergency stop rope, and then automatically triggers the emergency stop signal of the third emergency stop rope 9, that is, the cooling drum belt 10 stops running. The manual trigger mode is that when the third emergency stop rope 9 is manually pulled down, the emergency stop signal of the third emergency stop rope 9 is triggered, that is, the cooling drum belt 10 stops running.

[0044] In this embodiment, the optoelectronic monitoring module 200 is arranged on both sides of the cooling drum belt 10 in the open mill area and is used to detect the beam signal in the area of the cooling drum belt 10. The optoelectronic monitoring module 200 includes a reflective optoelectronic sensor group, which is arranged on both sides of the cooling drum belt 10. The reflective optoelectronic sensor group includes a transmitting end and a receiving end. When any beam is blocked, the optoelectronic monitoring module 200 synchronously triggers the emergency stop control module 500 to control the cooling drum belt 10 to stop running.

[0045] In this embodiment, the space interlock module 300 includes a safety fence 310 arranged around the open mill roller and a safety door 320 provided with a magnetic switch. The magnetic switch is used to monitor the opening state of the door body. The safety door 320 is arranged on both sides of the safety fence 310. When the magnetic switch detects that the safety door 320 is opened, it triggers the emergency stop signal of the emergency stop control module 500 and synchronously controls the open mill roller and the cooling drum belt 10 to stop running.

[0046] In this embodiment, the radar monitoring module 400 is used to monitor in real time whether there is a personnel intrusion in the open mill area. The radar monitoring module 400 includes a first millimeter-wave radar 1 and a second millimeter-wave radar 2, which are respectively arranged on both sides of the open mill roller to detect whether there is a personnel intrusion in the open mill roller area. The first millimeter-wave radar 1 is configured with a normal mode and a maintenance mode. When the first millimeter-wave radar 1 switches to the normal mode, it judges whether there is a personnel intrusion in the current area. If so, it immediately triggers the emergency stop control module 500. When the first millimeter-wave radar 1 switches to the maintenance mode, it judges whether there is a personnel intrusion in the current area. If so, it controls the roller to reduce the speed to a preset safe speed and performs a manual reset after the personnel leave to resume the operation of the roller.

[0047] In this embodiment, the emergency stop control module 500 is communicatively connected to the mechanical emergency stop module 100, the photoelectric monitoring module 200, the space interlock module 300, and the radar monitoring module 400. The emergency stop control module 500 is used to perform emergency stop actions in a hierarchical manner according to the emergency stop signals triggered by the mechanical emergency stop module 100, the photoelectric monitoring module 200, the space interlock module 300, and the radar monitoring module 400.

[0048] In this embodiment, the system further includes a reset module, which is communicatively connected to the mechanical emergency stop module 100, the photoelectric monitoring module 200, the space interlock module 300, the radar monitoring module 400, and the emergency stop control module 500. The reset module is used to perform a system self-check after the emergency stop is released, and then restart after the system self-check passes.

[0049] In this embodiment, different from Embodiment 1 and Embodiment 2, the photoelectric monitoring module 200 adopts a multi-layer beam design, and three layers of beams are respectively arranged on both sides of the cooling drum belt 10, which are located at the heights of 30 cm, 60 cm, and 90 cm from the ground, forming a more dense beam protection network. This design can detect intrusions at different heights. Whether a person bends down to enter or walks upright, the system can detect it in time and trigger corresponding safety measures.

[0050] It can be understood that the emergency stop control module 500 in this embodiment adopts a redundant design, including a main control unit and a standby control unit, and the two units work simultaneously and supervise each other. When the main control unit fails, the standby control unit can immediately take over the system control to ensure that the safety function will not fail due to a single-point failure. The system also adds a self-diagnosis function to regularly detect the working status of each module. Once an abnormality is found, it immediately alarms and records the fault information to facilitate maintenance personnel to quickly locate and eliminate the fault.

[0051] It should be noted that Embodiment 1, Embodiment 2, and Embodiment 3 are all types of the open mill area safety protection system.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention. The terms "first", "second", etc. in the specification and claims of this application and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or are inherent to these processes, methods, products or devices.

[0053] The above-described technical features can be combined arbitrarily. Although all possible combinations of these technical features have not been described, any combination of these technical features should be considered to be covered by this specification as long as such a combination does not exist in contradiction.

[0054] The specific embodiments of the present invention described above do not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and deformations made according to the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An open mill area safety protection system, characterized in that, Comprising: A mechanical emergency stop module (100) for responding to an emergency stop signal triggered manually by a user or automatically due to equipment abnormalities; An optoelectronic monitoring module (200) arranged on both sides of the cooling drum belt (10) in the mixer area for detecting beam signals in the area of the cooling drum belt (10); A spatial interlock module (300) including a safety fence (310) arranged around the mixer rollers and a safety door (320) provided with a magnetic switch, the magnetic switch being used to monitor the opening state of the door body; A radar monitoring module (400) for real-time monitoring of whether there is personnel intrusion in the mixer area; An emergency stop control module (500) is communicatively connected to the mechanical emergency stop module (100), the optoelectronic monitoring module (200), the spatial interlock module (300) and the radar monitoring module (400), and the emergency stop control module (500) is used to perform emergency stop actions in a hierarchical manner according to the emergency stop signals triggered by the mechanical emergency stop module (100), the optoelectronic monitoring module (200), the spatial interlock module (300) and the radar monitoring module (400).

2. The safety protection system for the open mill area according to claim 1, wherein The mechanical emergency stop module (100) includes a roller emergency stop device and a cooling drum belt (10) emergency stop device; The roller emergency stop device is used to control the rollers to stop running, and the cooling drum belt (10) emergency stop device is used to control the cooling drum belt (10) to stop running.

3. The safety protection system for the open mill area according to claim 2, characterized in that, The roller emergency stop device includes a first emergency stop pull rope (7) and a second emergency stop pull rope (8), and the first emergency stop pull rope (7) and the second emergency stop pull rope (8) are respectively arranged in the end areas of the mixer rollers for manually controlling the mixer rollers to stop running.

4. The safety protection system for the open mill area according to claim 2, wherein, The cooling drum belt (10) emergency stop device includes a third emergency stop pull rope (9), the third emergency stop pull rope (9) is arranged in the upper area of the cooling drum belt (10), and the third emergency stop pull rope (9) is configured with an automatic trigger mode and a manual trigger mode.

5. The safety protection system for the open mill area according to claim 4, wherein The automatic trigger mode is that when the height of the rubber material accumulation reaches the height of the third emergency stop pull rope (9), it automatically touches the emergency stop pull rope, and then automatically triggers the emergency stop signal of the third emergency stop pull rope (9), that is, the cooling drum belt (10) stops running; The manual trigger mode is that when the third emergency stop pull rope (9) is manually pulled down, it triggers the emergency stop signal of the third emergency stop pull rope (9), that is, the cooling drum belt (10) stops running.

6. The safety protection system for the open mill area according to claim 1, wherein, The optoelectronic monitoring module (200) includes a reflection optoelectronic sensor group, the reflection optoelectronic sensor group is arranged on both sides of the cooling drum belt (10), the reflection optoelectronic sensor group includes a transmitting end and a receiving end, and when any beam is blocked, the optoelectronic monitoring module (200) synchronously triggers the emergency stop control module (500) to control the cooling drum belt (10) to stop running.

7. The safety protection system for the open mill area according to claim 1, characterized in that The safety door (320) is arranged on both sides of the safety fence (310), and when the magnetic switch detects that the safety door (320) is opened, it triggers the emergency stop signal of the emergency stop control module (500) and synchronously controls the mixer rollers and the cooling drum belt (10) to stop running.

8. The safety protection system for the open mill area according to claim 1, wherein The radar monitoring module (400) includes a first millimeter-wave radar (1) and a second millimeter-wave radar (2). The first millimeter-wave radar (1) and the second millimeter-wave radar (2) are respectively arranged on both sides of the roll of the open mill for detecting whether there is any personnel intrusion in the area of the open mill roll.

9. The safety protection system for the open mill area according to claim 8, wherein, The first millimeter-wave radar (1) is configured with a normal mode and a maintenance mode; When the first millimeter-wave radar (1) switches to the normal mode, it judges whether there is any personnel intrusion in the current area. If so, it immediately triggers the emergency stop control module (500); When the first millimeter-wave radar (1) switches to the maintenance mode, it judges whether there is any personnel intrusion in the current area. If so, it controls the roll to reduce its speed to a preset safe speed and performs manual reset after the personnel leave to resume the operation of the roll.

10. The open mill area safety protection system according to claim 1, characterized in that, The system further includes a reset module. The reset module is communicatively connected to the mechanical emergency stop module (100), the optoelectronic monitoring module (200), the space interlock module (300), the radar monitoring module (400), and the emergency stop control module (500). The reset module is used to perform a self-check of the system after the emergency stop is released, and then restart the system after the self-check of the system passes.

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