Automatic coiling traction method and system for hot rolling production line strip steel

Abstract

The application discloses a hot rolling production line strip steel winding automatic traction method and system, the traction method uses a traction trolley, the inside of the traction trolley is provided with a strip steel passing channel, because the instantaneous speed of the strip steel rushing out of the snake vibration area is not less than 15 m / s, the strip steel is allowed to rush out of the traction trolley, and the strip steel head is recovered at full speed; the traction trolley can be opened and closed during movement along the plate chain, the traction trolley waits for the strip steel to rush out of the opened channel at the outlet of the snake vibration area, the strip steel rushes out of the opened channel of the traction trolley, and at the same time, the traction trolley accelerates and recovers the rushed strip steel head, the channel of the traction trolley is gradually closed, and the strip steel is closed; after the strip steel is closed, on the one hand, the traction trolley continues to recover the strip steel head, and on the other hand, the strip steel head is pulled back, the strip steel head is clamped near the front end of the traction trolley and is pulled to the inlet of the arrangement roller. The application can realize continuous and stable strip steel transmission, and does not need to wait or stop, so that the operation efficiency of the production line is improved.

Description

Technical Field

[0001] This invention relates to the field of hot-rolled strip steel production, and in particular to an automatic traction method and system for coiling strip steel in a hot-rolled production line. Background Technology

[0002] In a hot rolling production line, strip coiling is a crucial step. After the strip exits the rolling mill, it is buffered on a plate chain conveyor by a serpentine oscillator. This process causes the strip to be stacked in an S-shape on the plate chain conveyor. The strip head may be in different states, such as upright, against the wall, close together, bent back, or lying at an angle. It is difficult for the strip to automatically enter the sorting rolls of the subsequent coiling mechanism. It is necessary to manually use long-handled clamps to first straighten the position of the strip head, and then pull it into the sorting rolls of the coiling mechanism along the direction of travel of the plate chain conveyor for subsequent coiling and packaging operations.

[0003] After being pressed and rolled, the steel strip is decelerated and cooled by a serpentine vibrator. Even after this cooling process, the strip temperature still reaches hundreds of degrees Celsius during transport on the chain conveyor. The problems with manual operation under such high temperatures are as follows: manual operation poses numerous safety hazards; errors can lead to operator injury, and the high summer temperatures greatly increase the risk of heatstroke. The large manpower required is not only costly but also physically demanding, easily causing operator fatigue and impacting production efficiency. Furthermore, the nature of this work makes it increasingly difficult for people to choose this profession. The numerous drawbacks of manual traction can no longer meet the requirements of modern industrial production for high efficiency, safety, and stable quality. Therefore, it is necessary to seek new technological means to replace manual traction, ensuring worker safety, reducing labor costs, and improving production efficiency and product quality.

[0004] After the shaped steel exits the rolling mill, it passes through the serpentine zone, where the strip head can reach speeds exceeding 15 m / s and temperatures around 900℃. The strip head can remain upright after exiting for about 3 meters. Over time, the strip head randomly settles on the chain conveyor, with the continuously exiting strip stacked in an S-shape behind it. Existing automatic strip traction technologies typically refer to the principle of manual long-handled clamps, designing various claw-shaped structures to simulate clamping the strip when it is upright. Due to the high temperature and speed, coupled with poor visibility around the exit point, it is difficult for a robotic arm to identify and grasp the strip at the exit. Therefore, most research focuses on using a robotic arm to identify and grasp the strip in its upright state after the strip speed has decreased. For example, Chinese Utility Model Patent CN202220586686.7, published on June 21, 2022, provides a robotic gripper device for hot-rolled strip steel. This device uses one claw on each side to achieve a "straightening" function in a stable state. Building on this, Chinese Utility Model Patent 202222610111.7, published on September 30, 2022, provides a strip steel gripping robotic arm with an asymmetrical gripping structure of three claws to adapt to gripping moving strip steel with uncertain postures, aiming to achieve straightening and traction operations. In summary, these methods of improving gripping accuracy by modifying the grippers place high demands on the robotic arm's design. Furthermore, their principle of waiting for the strip steel to be in a vertical state before gripping can easily lead to dense S-shaped stacking and coiling due to the high output speed, resulting in strip steel overlapping, entanglement, and misalignment, which is detrimental to machine vision recognition of the strip steel's state and effective gripping. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the technical problem this invention aims to solve is to provide an automatic traction method and system for hot-rolled strip steel coiling in a production line, where a traction trolley replaces manual traction to achieve automatic traction of hot-rolled strip steel. Since the instantaneous speed of the strip steel exiting the serpentine vibration zone reaches 15m / s+, the trolley cannot immediately grasp the strip head. Therefore, this invention allows the strip steel to exit the traction trolley device and then be retrieved at full speed. Specifically, the trolley can open and close during its movement along the chain. Taking advantage of the strip steel still being in an upright state when it exits the serpentine vibration zone, the trolley waits for steel to exit at the serpentine vibration zone exit in an open manner. As the strip steel exits the open channel of the trolley, the trolley simultaneously accelerates and retrieves the exited strip head, clamping and traction it at a suitable position. This process does not require consideration of the strip head's posture, ensuring accurate grasping regardless of how the strip steel exits, improving the accuracy of strip head grasping, and solving the problems of high labor intensity, low efficiency, high cost, difficulty in quality control, and safety hazards under high-temperature operations caused by manual traction in hot-rolled strip steel production.

[0006] The technical solution adopted by the present invention to solve the aforementioned technical problem is as follows:

[0007] In a first aspect, the present invention provides an automatic traction method for coiling strip steel in a hot rolling production line. The traction method uses a traction trolley with a strip steel exit channel inside. Since the instantaneous speed of the strip steel rushing out of the snake vibration area is not less than 15m / s, the trolley cannot immediately grab the strip steel head, allowing the strip steel to rush out of the traction trolley and then chase back the strip steel head at full speed.

[0008] The traction trolley can open and close during its movement along the plate chain. When the strip steel just rushes out of the snake vibration area, it is still in an upright state. The traction trolley waits for the steel to be discharged at the exit of the snake vibration area in an open state. The strip steel rushes out of the channel opened by the traction trolley. At the same time, the traction trolley accelerates and chases back the head of the strip steel that has rushed out. The channel of the traction trolley gradually closes and gathers the strip steel.

[0009] After the strip is gathered, the traction trolley continues to chase the strip head forward while pulling the strip head back backward. The strip head is clamped near the front end of the traction trolley and pulled to the entrance of the finishing roll.

[0010] Secondly, the present invention provides an automatic traction system for strip coiling in a hot rolling production line, the system comprising:

[0011] A slide rail installed on the plate chain of a hot rolling production line along the direction of strip steel conveying;

[0012] A sliding device is used to drive the traction trolley device to move along the slide rail;

[0013] A lifting device is used to raise or lower the traction trolley device;

[0014] The control unit is used to control the working status of the traction trolley device, lifting device, and sliding device.

[0015] The traction trolley device includes a suspension platform, a front guide mechanism, a rear guide mechanism, and a roller mechanism. The suspension platform provides installation space, and the roller mechanism is installed on the suspension platform to drive the strip steel to move forward and backward. The front guide mechanism and the rear guide mechanism are installed at the front and rear of the suspension platform, respectively, and the two open up to provide a channel for the strip steel to pass through.

[0016] The gripping part of the front guide mechanism is used to capture the strip head, and the front opening of the front guide mechanism faces the entrance of the finishing roll, which facilitates the strip being guided into the finishing roll.

[0017] The rear end of the rear guide mechanism extends to the serpentine vibration area and connects with the serpentine vibration outlet, so that the strip steel can directly enter the channel opened by the trolley from the serpentine vibration area.

[0018] The front guide mechanism, rear guide mechanism, and roller mechanism can be opened or closed synchronously as a whole along the direction perpendicular to the conveying direction of the plate chain.

[0019] The suspension platform includes a high-temperature resistant plate, two symmetrically distributed lateral drive mechanisms, two symmetrically distributed lateral drive connecting plates, two symmetrically distributed baffles, and four support screws.

[0020] The surface of the high-temperature resistant plate is provided with rectangular openings along the direction perpendicular to the conveying direction of the strip steel. The rectangular openings are in the form of through holes. Baffles are vertically fixed on both sides of the lower surface of the high-temperature resistant plate.

[0021] The upper surface of the high-temperature resistant plate is connected to the lifting device; the lower surface of the high-temperature resistant plate and the area between the two baffles are fixedly connected to two transverse drive mechanisms, which are arranged in the same row, and the length direction of the transverse drive mechanisms is perpendicular to the strip conveying direction.

[0022] Support screws are provided on both sides of the transverse drive mechanism. One end of each support screw is connected to the baffle on the corresponding side, and the other end is fixedly connected to the high-temperature plate. Each of the four support screws is equipped with a sliding bearing. There is space in the height direction between the support screws and the high-temperature plate for the sliding bearing to slide laterally.

[0023] Each lateral drive mechanism is connected to a lateral drive connecting plate below it, and the two lateral drive connecting plates are symmetrically distributed. The two lateral drive connecting plates are connected to the front guide mechanism, roller mechanism and rear guide mechanism in the front-rear direction respectively. The two ends of the upper surface of the lateral drive connecting plate are fixedly connected to the sliding bearings on the corresponding support screws. The lateral drive connecting plate is connected to the sliding connection component of the lateral drive mechanism. Under the drive of the lateral drive mechanism, the lateral drive connecting plate moves along the lateral direction, thereby realizing the opening and closing of the traction trolley device.

[0024] The front guide mechanism includes two symmetrical high-temperature resistant front baffles and two laterally arranged servo cylinders. Each high-temperature resistant front baffle includes a long straight front guide plate and a tilting front guide plate. The tilting front guide plate tilts outwards and connects to the long straight front guide plate at an obtuse angle. The two high-temperature resistant baffles are respectively vertically connected to two laterally driven connecting plates. The long straight front guide plate is fixedly connected to the front part of the lower surface of the laterally driven connecting plates.

[0025] The two symmetrical front guide inclined plates have an "eight" shaped structure. The distance between the front ends of the two front guide inclined plates is greater than the distance between the rear ends of the two front guide inclined plates. The distance between the front ends of the two front guide inclined plates is consistent with the inlet of the finishing roll.

[0026] The extended end of the servo electric cylinder is driven and moves laterally through the reserved space on the front guide plate to clamp the strip steel.

[0027] The rear guide mechanism includes two symmetrical high-temperature resistant rear baffles. Each high-temperature resistant rear baffle includes a rear guide straight plate and a rear guide inclined plate. The rear guide inclined plate is inclined outward and connected to the rear guide straight plate at an obtuse angle. The two high-temperature resistant rear baffles are respectively vertically connected to the transverse drive connecting plate. The rear guide straight plate is fixedly connected to the transverse drive connecting plate. The openings of the two rear guide inclined plates are connected to the snake vibration outlet.

[0028] The openings of the two rear guide inclined plates are not smaller than the size of the snake vibration outlet.

[0029] The roller mechanism includes two symmetrically distributed drive rollers and a servo motor that drives the drive rollers. The drive rollers are located between the front guide mechanism and the rear guide mechanism, and are symmetrically positioned under the two transverse drive connecting plates. The servo motor is fixed to the upper surface of the transverse drive connecting plate and can pass through a rectangular opening on the high-temperature resistant plate. The rectangular opening provides space for the servo motor to move laterally during transverse movement. The output end of the servo motor is connected to the drive rollers, and the servo motor can drive the drive rollers to achieve forward and reverse rotation. The speed of the drive rollers is matched with the speed of the strip steel.

[0030] The sliding device includes a three-dimensional frame for supporting the connection, a sliding mechanism, a bearing platform, and a protective cover; the three-dimensional frame is connected to the sliding mechanism and can slide on the slide rail; the sliding mechanism is equipped with a drive motor and corresponding drive rollers; a front detection sensor and a rear detection sensor for detecting the presence or absence of strip steel, a lifting component of the lifting device and a lifting motor are installed on the bearing platform; and a positioning sensor is installed on the side of the protective cover.

[0031] The two detection sensors are laser sensors with an operating temperature of -10 to 50°C. These sensors have a built-in water cooling device that can reduce the ambient temperature to 50°C. The positioning sensor is a high-temperature resistant photoelectric sensor with an operating temperature of -25 to 150°C.

[0032] The lifting device includes four identical lifting mechanisms, each consisting of four identical lead screws. Each lead screw has a lifting component above it, and the four lifting components are connected to a lifting motor. The lower end of the lifting device is connected to the suspension platform of the traction trolley device. The lifting motor drives the four lead screws to move up and down, thereby realizing the lifting operation of the traction trolley device.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] The most prominent and essential feature of this invention is:

[0035] 1. Improve production efficiency: The method of this invention, by replacing manual traction with an automatic traction trolley, can achieve continuous and stable strip steel conveying without waiting or stopping, thereby improving the operating efficiency of the production line.

[0036] 2. Reduce labor intensity: The automatic traction method and system of the present invention can reduce the physical labor required of workers and reduce labor intensity.

[0037] 3. Improved safety: The automatic traction method and system of this invention can reduce the impact of human operation on safety, reduce the probability of accidents, and improve the safety of the production line.

[0038] 4. Ensure product quality: The automatic traction method and system of this invention can achieve more precise control and adjustment, ensuring that the strip steel maintains stable tension and shape during the conveying process, which is conducive to improving product quality and consistency.

[0039] 5. Reduce human error: The automatic traction method and system of this invention can reduce errors and instabilities in human operation, and improve the stability and reliability of the production line.

[0040] 6. Cost savings: The automatic traction method and system of this invention can reduce labor costs and resource waste, and improve the economic efficiency of the production line.

[0041] The significant advancement of this invention is:

[0042] 1. There is no need to consider the shape of the strip after it is unloaded, which reduces the difficulty of grasping.

[0043] 2. The traction trolley device has a simple structure, lower manufacturing cost compared to the robotic arm device, and is easy to maintain.

[0044] 3. High Temperature Resistance: All equipment is made of high-temperature resistant materials. The detection sensor uses a laser sensor with an operating temperature of -10 to 50℃. This sensor has a built-in water cooling device that can reduce the ambient temperature to 50℃. The positioning sensor uses a high-temperature resistant photoelectric sensor with an operating temperature of -25 to 150℃. All motors are servo motors with a temperature tolerance of 100 to 200℃. The sensors are placed on the trolley's support platform, far from the strip steel, where the ambient temperature is relatively low, ensuring normal operation of the sensors.

[0045] 6. The maximum speed of the trolley can reach 4m / s, and the acceleration time is 2s, which can ensure that the strip steel is gathered in 2s. When the trolley gathers the strip steel, the displacement is >4 meters. This space can meet the normal stacking of the strip steel after the snake vibration, and can ensure that the snake vibration operation is not affected. Attached Figure Description

[0046] Figure 1 This is a schematic diagram of the overall structure of an automatic strip coiling traction system for a hot-rolled production line according to an embodiment of the present invention.

[0047] Figure 2 This is a schematic diagram of the structure of a traction trolley device according to an embodiment of the present invention.

[0048] Figure 3 This is a schematic diagram of the internal structure of a traction trolley device according to an embodiment of the present invention.

[0049] Figure 4 This is a schematic diagram of the structure of a transverse drive mechanism 112 according to an embodiment of the present invention.

[0050] Figure 5 This is a schematic diagram of the front guide mechanism 12 according to an embodiment of the present invention.

[0051] Figure 6 This is a schematic diagram of the overall framework of one embodiment of the present invention.

[0052] Among them, 1 is the traction trolley device, 2 is the sliding device, 3 is the lifting device, I is the strip steel, II is the plate chain of the conveyor strip steel, 11 is the suspension platform, 12 is the front guide mechanism, 13 is the rear guide mechanism, 14 is the roller mechanism, 21 is the trapezoidal three-dimensional frame, 22 is the sliding mechanism, 23 is the bearing platform, 24 is the protective cover, 231 is the rear detection sensor, 232 is the front detection sensor, 233 is the positioning sensor, 31 is the lifting device, 311 is the lifting component, and 312 is the lifting motor;

[0053] 111 is a high-temperature resistant plate, 1111 is a rectangular opening, 131 is a rear guide straight plate, 132 is a rear guide inclined plate; 112 is a transverse drive mechanism, 113 is a transverse drive connecting plate, 114 is a baffle, 115 is a support screw, 141 is a drive roller, 1411 is a servo motor, 1151 is a sliding bearing; 1121 is a sliding platform, 1122 is a helical screw, 1123 is a sliding shaft, 1124 is a transverse... 1125 is a motor, 1126 is a sliding rail, 121 is a sliding connection component; 121 is a front guide long straight plate, 122 is a front guide inclined plate, 1211 is a servo electric cylinder, 1212 is a hole space; 21 is a trapezoidal three-dimensional frame, 211 is an inclined column, 212 is a crossbeam, 213 is a support column, 214 is a support rod, 22 is a sliding mechanism, 221 is a drive roller, 311 is a lifting component, 312 is a lifting motor, and II is a plate chain. Detailed Implementation

[0054] The present invention will now be described in detail with reference to the embodiments and accompanying drawings. The embodiments are merely further illustrations of the technical solutions of the present invention and do not limit the scope of protection of the present invention.

[0055] This invention provides an automatic strip coiling and traction system for hot rolling production lines. It can replace manual traction, achieving unmanned automated operation of strip traction on hot rolling production lines. On the one hand, it reduces the labor intensity of workers and effectively avoids production accidents and losses. On the other hand, automatic traction can continuously and stably pull the strip, avoiding the need for pauses and rest required during manual traction, thus greatly improving production efficiency. The advantage of this invention is that the traction trolley waits for the strip to exit at the serpentine zone opening (the traction trolley is initially stationary with a speed of 0). After serpentine vibration, the strip rushes out of the open channel of the traction trolley at a relatively high speed. Before the strip rushes out of the traction trolley, the detection sensor 231 on the traction trolley has detected the strip. At this time, the trolley is started to accelerate forward. Simultaneously, the transverse drive mechanism and roller mechanism also begin to operate. On the one hand, they drive the transverse drive connecting plate, causing the front and rear guide mechanisms and rollers, which are in the open state, to converge towards the center. On the other hand, the rollers rotate forward to straighten the strip and move it forward until it is gathered. After the strip is gathered, the trolley continues to move forward to catch the strip head, while the rollers rotate in the opposite direction to pull the strip head back. At the appropriate position, the servo electric cylinder of the forward guide mechanism clamps and pulls the strip head. This process eliminates the need to consider the state of the strip head, improving the accuracy of strip head gripping.

[0056] Example 1 (refer to) Figure 1 , Figure 2 Description of implementation methods

[0057] The automatic traction system for strip coiling in the hot rolling production line of this embodiment 1 includes a traction trolley device 1, a sliding device 2, a lifting device 3, and a control unit. The sliding device 2 is used to install on both sides of the plate chain II of the conveyor strip I, and the control unit is used to control each part of the system to complete the corresponding actions.

[0058] The traction trolley device 1 comprises four main parts: a suspension platform 11, a front guide mechanism 12, a rear guide mechanism 13, and a roller mechanism 14.

[0059] The suspended platform is used to provide installation space;

[0060] The roller mechanism 14 is mounted on the suspension platform 11 and is used to drive the strip steel to move forward and backward;

[0061] The front guide mechanism 12 and the rear guide mechanism 13 are respectively installed at the front and rear of the suspension platform, and the two open to provide a channel for the strip steel to pass through;

[0062] The gripping part of the front guide mechanism 12 is used to capture the strip head, and the front opening faces the entrance of the finishing roll, which facilitates the strip being introduced into the finishing roll.

[0063] The rear end of the rear guide mechanism extends to the serpentine vibration area and connects with the serpentine vibration outlet, so that the strip steel can directly enter the channel opened by the trolley from the serpentine vibration area.

[0064] When the strip is fed into the finishing roll, the traction trolley is in a retracted state, and the opening of the symmetrical front guide inclined plate is directly opposite the entrance of the finishing roll, which facilitates the strip being guided into the finishing roll.

[0065] The sliding device 2 includes a trapezoidal three-dimensional frame 21, a sliding mechanism 22, a supporting platform 23, and a protective cover 24.

[0066] The bearing platform is equipped with a rear detection sensor 231 and a front detection sensor 232 for detecting the presence or absence of strip steel, as well as a lifting component 311 of the lifting mechanism 31. The overall structure is trapezoidal and three-dimensional. The sliding device 2 is equipped with a drive roller that can drive the traction trolley to move back and forth.

[0067] The lifting device 3 includes four identical lifting mechanisms 31. The upper end of each lifting mechanism 31 is connected to four lifting components 311, and the lower end of the lifting device 3 is connected to the suspension platform 11 of the traction trolley device 1, thereby realizing the lifting operation of the traction trolley device.

[0068] In this invention, the gripping part can be in the form of a servo electric cylinder or a small robotic arm, etc., and its gripping end has a flat surface for clamping the strip steel.

[0069] Example 2: Refer to Figure 2 , Figure 3 , Figure 4 Description of implementation methods

[0070] This embodiment is a further illustrative example of the suspension platform 11 in the traction trolley device 1 described in Example 1.

[0071] The suspension platform 11 includes a high-temperature resistant plate 111, two symmetrically distributed transverse drive mechanisms 112, two symmetrically distributed transverse drive connecting plates 113, two symmetrically distributed baffles 114, and four support screws 115.

[0072] The surface of the high-temperature plate 111 is provided with a rectangular opening 1111 along the direction perpendicular to the conveying direction of the strip steel. The rectangular opening is in the form of a through hole. Baffles 114 are vertically fixed on both sides of the lower surface of the high-temperature plate 111.

[0073] The upper surface of the high-temperature plate is connected to the lifting device 3; the lower surface of the high-temperature plate and the area between the two baffles are fixedly connected to two transverse drive mechanisms 112, which are ball screw slides. The two transverse drive mechanisms 112 are arranged in the same row, and the length direction of the transverse drive mechanism is perpendicular to the strip conveying direction.

[0074] Support screws 115 are provided on both sides of the transverse drive mechanism 112, with a total of four support screws. One end of each support screw is connected to the baffle 114 on the corresponding side, and the other end is fixedly connected to the high-temperature resistant plate 111 in a reasonable manner, such as by fixing it to the lower surface of the high-temperature resistant plate through a connector. The support screws 115 are of the same length as the transverse drive mechanism 112.

[0075] Each of the four support screws 115 is equipped with a sliding bearing 1151. There is a certain space in the height direction between the support screws 115 and the high-temperature plate 111, which allows the sliding bearings 1151 to slide laterally along the support screws.

[0076] Each lateral drive mechanism 112 is connected to a lateral drive connecting plate 113 below it, and the two lateral drive connecting plates 113 are symmetrically distributed. The two lateral drive connecting plates 113 are sequentially connected to the front guide mechanism 12, the roller mechanism 14, and the rear guide mechanism 13 in the front-rear direction, respectively. The two ends of the upper surface of the symmetrically distributed lateral drive connecting plates 113 are fixedly connected to the sliding bearings 1121 on the corresponding support screws 115. The sliding bearings play a guiding role. The lateral drive connecting plates are connected to the sliding connecting parts 1126 of the lateral drive mechanism. Under the drive of the lateral drive mechanism, the lateral drive connecting plates move laterally along the sliding platform and the support screw, thereby realizing the opening and closing of the trolley.

[0077] Driven by the motor of the horizontal drive mechanism 112, the horizontal drive connecting plate 113 drives the front and rear guide mechanisms and roller mechanism under the horizontal drive connecting plate 113 to move horizontally and reciprocating synchronously. The two symmetrical horizontal drive connecting plates move towards the middle to realize the folding of the trolley, and the two symmetrical horizontal drive connecting plates move to the sides to realize the opening of the trolley.

[0078] Each lateral drive mechanism 112 (see Figure 4 The system includes a sliding platform 1121, which is a U-shaped groove. A helical screw 1122 is housed within the U-shaped groove, and a sliding shaft 1123 is mounted on the helical screw 1122. A transverse motor 1124 is located on one side of the helical screw 1122 and is embedded within the U-shaped groove. The other side of the servo motor is fixedly connected to a baffle 114. Sliding rails 1125 are provided on the sliding platforms 1121 on both sides of the U-shaped groove. Sliding connecting components 1126 are mounted on the sliding rails, and these components fix the sliding shaft 1123 to the transverse drive connecting plate 113.

[0079] In this embodiment, the core component of the lateral drive mechanism is a ball screw slide, but other slides capable of providing lateral linear movement can also be used.

[0080] In this invention, the lateral direction is defined as the direction perpendicular to the strip transmission, the longitudinal direction is the strip conveying direction, the side where the snake vibration exit is located is the rear, and the direction where the finishing roll is located is the front.

[0081] Example 3: Reference Figure 5 Description of implementation methods

[0082] This embodiment is a further explanation of the front guide mechanism 12 in the traction trolley device of the automatic traction system for strip coiling in the hot rolling production line described in Example 2.

[0083] The front guide mechanism 12 includes two symmetrical high-temperature resistant front baffles and two laterally arranged servo cylinders 1211. Each high-temperature resistant front baffle includes a front guide straight plate 121 and a front guide inclined plate 122. The front guide inclined plate 122 is inclined outwards and connected to the front guide straight plate 121 at a certain obtuse angle. The two high-temperature resistant front baffles are perpendicular to the transverse drive connecting plate 113. The front guide straight plate 121 is fixedly connected to the front part of the lower surface of the transverse drive connecting plate 113. The portion of the two high-temperature resistant front baffles extending beyond the transverse drive connecting plate forms the front guide inclined plate 122, facilitating the introduction of the strip steel into the finishing rolls.

[0084] The two symmetrical front guide inclined plates 122 are in a figure-eight shape, and the distance between the front ends of the two front guide inclined plates 122 is greater than the distance between the rear ends of the two front guide inclined plates 122.

[0085] The front guide plate 121 has a hole 1212 through which the servo cylinder 1211 passes. The upper end of the servo cylinder 1211 is fixedly connected to the high-temperature resistant plate 111. The extended end of the servo cylinder 1211 is driven and moves laterally through the hole 121. The extended end of the servo cylinder 1211 has a clamping plate that passes through the hole 1212 and clamps the strip steel, enabling the tightening and loosening of the strip steel.

[0086] Specifically, during the process of the traction trolley device retrieving the strip that has rushed out of the traction trolley device, when the front detection sensor 232 detects that the strip head has entered the front guide mechanism, the symmetrical servo electric cylinders move towards the center to clamp the strip head, thus capturing the strip head. The positioning sensor 233 senses the current position of the traction trolley device. When it detects that the captured strip head has been pulled to the front of the finishing roll, the openings of the two front guide inclined plates face the entrance of the finishing roll, sending the strip head into the finishing roll.

[0087] The positioning sensor is a high-temperature resistant photoelectric sensor, and photoelectric receiving devices are installed at the finishing roll and the exit position of the serpentine strip. When returning to the exit position of the serpentine strip to prepare to pull the next strip, the positioning sensor and photoelectric receiving device are electrically connected to the control unit.

[0088] Example 4: Reference Figure 2 Description of implementation methods

[0089] This embodiment is a further description of the rear guide mechanism 13 in the traction trolley device described in Example 2.

[0090] The rear guide mechanism 13 includes two symmetrical high-temperature resistant rear baffles. Each high-temperature resistant rear baffle includes a rear guide straight plate 131 and a rear guide inclined plate 132. The rear guide inclined plate 132 is inclined outward and connected to the rear guide straight plate 131 at a certain obtuse angle. The two high-temperature resistant rear baffles are respectively vertically connected to the transverse drive connecting plate 113. The rear guide straight plate 131 is fixedly connected to the transverse drive connecting plate 113. The openings of the two rear guide inclined plates 132 are aligned with the snake vibration outlet, facilitating the smooth entry of the strip steel into the traction trolley device. The openings of the two rear guide inclined plates 132 are not smaller than the size of the snake vibration outlet.

[0091] Specifically, the traction trolley device waits for steel to be discharged at the exit of the serpentine vibration zone with the trolley in an open state. The two symmetrical rear inclined plates of the rear guide mechanism extend to the serpentine vibration zone and connect with the serpentine vibration exit, so that the strip steel can directly rush into the open channel of the trolley from the serpentine vibration zone.

[0092] Example 5: Refer to Figure 3 Description of implementation methods

[0093] This embodiment is a further description of the roller mechanism 14 in the traction trolley device described in Example 2.

[0094] The roller mechanism 14 includes two symmetrically distributed drive rollers 141 and a servo motor 1411 that drives the drive rollers. The drive rollers 141 are located between the front guide mechanism 12 and the rear guide mechanism 13, and are symmetrically placed under the two transverse drive connecting plates 113.

[0095] The servo motor 1411 is positioned above the drive roller and fixed to the upper surface of the transverse drive connecting plate 113. It passes through a rectangular opening 1111 on the high-temperature resistant plate 111, providing space for the servo motor to move laterally. The output end of the servo motor 1411 is connected to the drive roller, enabling it to rotate in both forward and reverse directions. The speed of the drive roller can be matched to the speed of the strip, reaching up to 15 m / s+, and is used to drive the strip forward and backward.

[0096] Specifically, the traction trolley waits for the strip to exit at the snake-vibration outlet. When the detection sensor 231 on the trolley detects the strip exiting, the trolley accelerates forward. In Embodiment 2, the transverse drive connecting plate 113 retracts towards the center. Simultaneously, the servo motor drives the roller to begin rotating in the forward direction, thus straightening the strip. When the strip is gathered, the servo motor drives the roller to begin rotating in the reverse direction, pulling back the strip that has exited the trolley. When the servo cylinder in the front guide mechanism clamps the strip head, the drive roller stops rotating until the strip is fed into the finishing roll, at which point the drive roller rotates in the forward direction, thus guiding the strip into the finishing roll.

[0097] Example 6: Refer to Figure 1 , Figure 6 Description of implementation methods

[0098] This embodiment provides a further example of the sliding device 2 described in the automated manual traction method for hot-rolled strip steel in Example 1.

[0099] Sliding device 2 (participating) Figure 6 The system includes a trapezoidal three-dimensional frame 21, a sliding mechanism 22, a supporting platform 23, and a protective cover 24. The trapezoidal three-dimensional frame 21 includes four inclined columns 211, four crossbeams 212, and internal support columns 213 and support rods 214. The trapezoidal three-dimensional frame 21 is fixedly connected to the sliding mechanism 22 and placed on slide rails. Slide rails are added along the conveying direction on both sides of the plate chain II. The inclined columns 211 provide support and stability. The supporting platform 23 is located above the frame.

[0100] The sliding mechanism 22 described in this embodiment is a rolling guide rail. The sliding mechanism contains drive rollers 221, each driven by a drive motor. In this embodiment, four drive rollers are provided, enabling the traction trolley to perform reciprocating linear motion along the conveyor belt direction and providing a high speed.

[0101] The protective cover 24 includes a housing side plate, a protective plate, and a housing, and is used to protect the traction trolley device. A positioning sensor 232 is located on the housing side plate.

[0102] The carrying platform 23 is formed by four inclined sides supporting the upper end to form a rectangle. A high-temperature resistant steel plate of the same size is covered on the rectangle. The lifting component 311 and the lifting motor 312 in the lifting device are placed on the carrying platform. The carrying platform 23 is equipped with a rear detection sensor 231 and a front detection sensor 232 for detecting the presence or absence of strip steel.

[0103] In this embodiment, the sliding mechanism is a rolling guide rail, but it can also be a sliding guide rail or other sliding mechanisms that can provide overall movement of the trolley.

[0104] In this embodiment, the trapezoidal three-dimensional structures are fixed together by a suitable connection method to form the frame of the sliding device, thereby realizing the reciprocating motion of the trolley.

[0105] Example 7, Reference Figure 6 Description of implementation methods

[0106] This embodiment provides a further example of the lifting device described in the automatic traction method system for strip coiling in a hot rolling production line as described in Example 1.

[0107] The lifting device 3 described in this embodiment includes four identical lifting mechanisms 31. The upper end of each lifting mechanism 31 is connected to four lifting components 311, and the lower end of the lifting device is connected to the suspension platform 11 of the traction trolley device 1 to realize the lifting operation of the traction trolley.

[0108] Specifically, after the strip is captured by the sorting rolls, the traction trolley is lifted by the lifting device to increase its height, detach from the strip, and moves backward along the slide rail to return.

[0109] All the motors, sensors, and photoelectric receiving devices mentioned above in this invention are electrically connected to the control unit, and the control unit controls the corresponding components to complete their work.

[0110] In this invention, the gripping part of the front guide device of the trolley device adopts a servo electric cylinder, but other gripping devices, such as cylinders, mechanical grippers, etc., can also be used.

[0111] In this invention, the lifting device can also be a scissor lift mechanism, etc. The positioning sensor in this invention can be a photoelectric sensor or a GPS positioning sensor. The GPS positioning sensor is equipped with a high-temperature resistant protective shell and is connected to the control unit. GPS positioning sensors are installed on the traction trolley, near the inlet of the finishing roll, and near the serpentine outlet to sense the relative positions of the three.

[0112] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0113] Any aspects not covered in this invention are applicable to existing technologies.

Claims

1. An automatic traction system for strip coiling in a hot-rolled production line, characterized in that, The system includes: A slide rail installed on the plate chain of a hot rolling production line along the direction of strip steel conveying; A sliding device is used to drive the traction trolley device to move along the slide rail; A lifting device is used to raise or lower the traction trolley device; The control unit is used to control the working status of the traction trolley device, lifting device, and sliding device. The traction trolley device includes a suspension platform, a front guide mechanism, a rear guide mechanism, and a roller mechanism. The suspension platform provides installation space, and the roller mechanism is installed on the suspension platform to drive the strip steel to move forward and backward. The front guide mechanism and the rear guide mechanism are installed at the front and rear of the suspension platform, respectively, and the two open up to provide a channel for the strip steel to pass through. The gripping part of the front guide mechanism is used to capture the strip head, and the front opening of the front guide mechanism faces the entrance of the finishing roll, which facilitates the strip being guided into the finishing roll. The rear end of the rear guide mechanism extends to the serpentine vibration area and connects with the serpentine vibration outlet, so that the strip steel can directly enter the channel opened by the trolley from the serpentine vibration area. The front guide mechanism, rear guide mechanism, and roller mechanism can be opened or closed synchronously as a whole along the direction perpendicular to the conveying direction of the plate chain; The suspension platform includes a high-temperature resistant plate, two symmetrically distributed lateral drive mechanisms, two symmetrically distributed lateral drive connecting plates, two symmetrically distributed baffles, and four support screws. The surface of the high-temperature resistant plate is provided with rectangular openings along the direction perpendicular to the conveying direction of the strip steel. The rectangular openings are in the form of through holes. Baffles are vertically fixed on both sides of the lower surface of the high-temperature resistant plate. The upper surface of the high-temperature resistant plate is connected to the lifting device; the lower surface of the high-temperature resistant plate and the area between the two baffles are fixedly connected to two transverse drive mechanisms, which are arranged in the same row, and the length direction of the transverse drive mechanisms is perpendicular to the strip conveying direction. Support screws are provided on both sides of the transverse drive mechanism. One end of each support screw is connected to the baffle on the corresponding side, and the other end is fixedly connected to the high-temperature plate. Each of the four support screws is equipped with a sliding bearing. There is space in the height direction between the support screws and the high-temperature plate for the sliding bearing to slide laterally. Each lateral drive mechanism is connected to a lateral drive connecting plate below it, and the two lateral drive connecting plates are symmetrically distributed. The two lateral drive connecting plates are connected to the front guide mechanism, roller mechanism and rear guide mechanism in the front-rear direction respectively. The two ends of the upper surface of the lateral drive connecting plate are fixedly connected to the sliding bearings on the corresponding support screws. The lateral drive connecting plate is connected to the sliding connection component of the lateral drive mechanism. Under the drive of the lateral drive mechanism, the lateral drive connecting plate moves along the lateral direction, thereby realizing the opening and closing of the traction trolley device.

2. The automatic strip coiling traction system for hot rolling production lines according to claim 1, characterized in that, The front guide mechanism includes two symmetrical high-temperature resistant front baffles and two laterally arranged servo cylinders. Each high-temperature resistant front baffle includes a long straight front guide plate and a tilting front guide plate. The tilting front guide plate tilts outwards and connects to the long straight front guide plate at an obtuse angle. The two high-temperature resistant baffles are respectively vertically connected to two laterally driven connecting plates. The long straight front guide plate is fixedly connected to the front part of the lower surface of the laterally driven connecting plates. The two symmetrical front guide inclined plates have an "eight" shaped structure. The distance between the front ends of the two front guide inclined plates is greater than the distance between the rear ends of the two front guide inclined plates. The distance between the front ends of the two front guide inclined plates is consistent with the inlet of the finishing roll. The extended end of the servo electric cylinder is driven and moves laterally through the reserved space on the front guide plate to clamp the strip steel.

3. The automatic traction system for strip coiling in a hot rolling production line according to claim 1, characterized in that, The rear guide mechanism includes two symmetrical high-temperature resistant rear baffles. Each high-temperature resistant rear baffle includes a rear guide straight plate and a rear guide inclined plate. The rear guide inclined plate is inclined outward and connected to the rear guide straight plate at an obtuse angle. The two high-temperature resistant rear baffles are respectively vertically connected to the transverse drive connecting plate. The rear guide straight plate is fixedly connected to the transverse drive connecting plate. The openings of the two rear guide inclined plates are connected to the snake vibration outlet.

4. The automatic strip coiling traction system for hot rolling production lines according to claim 3, characterized in that, The openings of the two rear guide inclined plates are not smaller than the size of the snake vibration outlet.

5. The automatic strip coiling traction system for a hot-rolled production line according to claim 1, characterized in that, The roller mechanism includes two symmetrically distributed drive rollers and a servo motor that drives the drive rollers. The drive rollers are located between the front guide mechanism and the rear guide mechanism, and are symmetrically positioned under the two transverse drive connecting plates. The servo motor is fixed to the upper surface of the transverse drive connecting plate and can pass through a rectangular opening on the high-temperature resistant plate. The rectangular opening provides space for the servo motor to move laterally during transverse movement. The output end of the servo motor is connected to the drive rollers, and the servo motor can drive the drive rollers to achieve forward and reverse rotation. The speed of the drive rollers is matched with the speed of the strip steel.

6. The automatic traction system for strip coiling in a hot rolling production line according to claim 1, characterized in that, The sliding device includes a three-dimensional frame for supporting the connection, a sliding mechanism, a bearing platform, and a protective cover; the three-dimensional frame is connected to the sliding mechanism and can slide on the slide rail; the sliding mechanism is equipped with a drive motor and corresponding drive rollers; a front detection sensor and a rear detection sensor for detecting the presence or absence of strip steel, a lifting component of the lifting device and a lifting motor are installed on the bearing platform; and a positioning sensor is installed on the side of the protective cover.

7. The automatic strip coiling traction system for a hot-rolled production line according to claim 6, characterized in that, The two detection sensors are laser sensors with an operating temperature of -10~50℃. These sensors have a built-in water cooling device that can reduce the ambient temperature to 50℃. The positioning sensor is a high-temperature resistant photoelectric sensor with an operating temperature of -25~150℃.

8. The automatic strip coiling traction system for a hot-rolled production line according to claim 1, characterized in that, The lifting device includes four identical lifting mechanisms, each consisting of four identical lead screws. Each lead screw has a lifting component above it, and the four lifting components are connected to a lifting motor. The lower end of the lifting device is connected to the suspension platform of the traction trolley device. The lifting motor drives the four lead screws to move up and down, thereby realizing the lifting operation of the traction trolley device.

9. A traction method using the automatic traction system for strip coiling in a hot-rolled production line according to any one of claims 1-8, characterized in that, The traction method uses a traction trolley with a strip steel exit channel inside. Since the instantaneous speed of the strip steel rushing out of the snake vibration area is not less than 15m / s, the trolley cannot immediately grab the strip steel head, allowing the strip steel to rush out of the traction trolley and then chase back the strip steel head at full speed. The traction trolley can open and close during its movement along the plate chain. When the strip steel just rushes out of the snake vibration area, it is still in an upright state. The traction trolley waits for the steel to be discharged at the exit of the snake vibration area in an open state. The strip steel rushes out of the channel opened by the traction trolley. At the same time, the traction trolley accelerates and chases back the head of the strip steel that has rushed out. The channel of the traction trolley gradually closes and gathers the strip steel. After the strip is gathered, the traction trolley continues to chase the strip head forward while pulling the strip head back backward. The strip head is clamped near the front end of the traction trolley and pulled to the entrance of the finishing roll.

Images