Anti-collision device and method

Abstract

The invention relates to the technical field of material conveying, in particular to an anti-collision device and method. The conveying roller way in the anti-collision device is provided with the free roller, and the rotating part is installed on the free roller, so that when materials move to the free roller, the free roller starts to rotate and drives the rotating part to rotate, blades of the rotating part are gradually close to the proximity switch, and after the proximity switch senses the blades on the rotating part, the free roller is driven to rotate. The proximity switch sends a stop signal to the driver. The driver is electrically connected with the proximity switch, so that the driver can receive the stop signal and stop driving the conveying roller way; therefore, operation of the conveying roller way is stopped in time, materials stop moving in time, the materials are prevented from colliding with a buffer at the tail end of the conveying roller way, the materials and the buffer are prevented from being damaged, and the quality of the materials is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of material conveying, and in particular to an anti-collision device and method. Background Art

[0002] Under existing technology, photoelectric switches are commonly used as detection devices in quenching machine runout rollers and heat treatment cooling bed loading rollers. These sensors collect steel plate position signals to control the roller's operating status. Photoelectric switches are sensors that use light reflection, refraction, transmission, or occlusion to detect the position, distance, or state of an object, and are widely used in industrial automation.

[0003] However, in the prior art, the detection signal may fluctuate, resulting in the steel plate failing to stop in time, causing the steel plate to collide with the buffer device at the end of the cooling bed loading roller, causing damage to the steel plate. Summary of the Invention

[0004] The purpose of the present invention includes providing an anti-collision device and method, which can prevent the steel plate from colliding with the buffer loading and sending at the end of the roller table, avoid causing damage to the steel plate, and ensure the quality of the steel plate and the stability of the equipment operation.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] In a first aspect, the present invention provides an anti-collision device, comprising:

[0007] A conveying roller conveyor is provided with a free roller spaced apart from its end;

[0008] The driver is electrically connected to the conveyor roller;

[0009] A rotating member is mounted on the free roller; the rotating member is provided with blades;

[0010] A proximity switch, the proximity switch being electrically connected to the rotating member and the driver;

[0011] The conveyor roller is used to convey materials toward its end; the proximity switch is used to sense the blade, and when the proximity switch senses the blade, the proximity switch is used to send a stop signal to the driver; the driver is used to drive the conveyor roller and to receive the stop signal.

[0012] In an optional embodiment, the free roller is the third roller from the end of the conveyor roller conveyor;

[0013] The number of blades is four; the four blades are circumferentially arranged around the rotation axis of the rotating member.

[0014] In an optional embodiment, the anti-collision device includes a bracket, the proximity switch is fixed to the bracket, and the bracket is spaced apart from the rotating member.

[0015] In an optional embodiment, the spacing distance between the rotating member and the proximity switch is a, wherein 10 mm ≤ a ≤ 12 mm.

[0016] In a second aspect, the present invention provides a collision avoidance method based on the aforementioned collision avoidance device, comprising:

[0017] The rotating part is installed on the free roller, and the end of the conveying roller is spaced from the free roller;

[0018] Controlling the driver to drive the conveyor roller to convey the material toward the end of the conveyor roller, so that when the material moves to the position of the free roller installed with the rotating member, the free roller rotates and drives the rotating member to rotate;

[0019] The rotating part, the proximity switch and the driver are electrically connected in sequence, so that after the proximity switch senses the blades on the rotating part, it sends a stop signal to the driver for driving the conveyor roller. After receiving the stop signal, the driver stops driving the conveyor roller.

[0020] In an optional embodiment, the step of mounting the rotating member on the free roller and spacing the end of the conveying roller from the free roller comprises:

[0021] The number of blades is determined based on the circumference C of the free roller, the distance b between the end of the conveyor roller and the free roller, and the distance d that the material moves during the rotation of the rotating member.

[0022] In an optional embodiment, based on C being 1 m, the distance b between the third-to-last roller and the end of the conveyor roller being 0.7 m, and the material moving distance d being 0.25 m when the rotating member rotates a quarter of a circle, it is determined that the rotating member is provided with four symmetrical blades.

[0023] In an optional embodiment, the design method of providing the rotating member with four symmetrical blades includes:

[0024] The rotating part is installed on the third roller from the bottom, and the distance between the third roller from the bottom and the end of the conveyor roller is 0.7m;

[0025] If the rotating part is equipped with a blade, the period of the rotating part is one circle. After the material moves 1m, the conveyor roller stops running, causing the material to collide with the buffer at the end.

[0026] If the rotating part is provided with two symmetrical blades, the period of the rotating part is half a circle, and after the material moves 0.5m, the conveyor roller stops running, causing it to collide with the buffer under the action of inertia;

[0027] If the rotating part is provided with four symmetrical blades, the period of the rotating part is one quarter of a turn, and after the material moves 0.25m, the conveyor roller stops running and the material is at the loading position;

[0028] Based on the inference, the rotating member is provided with four symmetrical blades.

[0029] In an optional embodiment, the anti-collision method of the conveyor roller further includes:

[0030] A delay device is set at the proximity switch. When the proximity switch senses the blade on the rotating part, the delay device controls the proximity switch to send a stop signal to the driver after T1; where T1 is the delay time.

[0031] In an optional embodiment, the anti-collision method of the conveyor roller further includes:

[0032] After the sensor senses that the material has left the quenching machine outlet, it sends a start signal to the driver to start the conveyor roller;

[0033] The timing starts when the sensor sends a start signal to the driver. When the running time of the conveyor roller reaches T2, the breaker disconnects the power supply of the driver; where T2 is the running time of the conveyor roller.

[0034] The anti-collision device and method provided by the embodiments of the present invention have the following beneficial effects:

[0035] The conveyor roller in this anti-collision device features a free roller. When material moves onto the free roller, the free roller begins to rotate. Because a rotating member is mounted on the free roller, the free roller drives the rotating member, causing the blades of the rotating member to gradually approach a proximity switch. When the proximity switch senses the blades on the rotating member, it sends a stop signal to the driver. Because the driver and proximity switch are electrically connected, the driver receives the stop signal and stops driving the conveyor roller. This stops the conveyor roller and the material immediately, preventing collision with the buffer at the end of the conveyor roller and damaging both the material and the buffer, thus ensuring material quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0037] Figure 1 A schematic structural diagram of the anti-collision device provided in this embodiment from a first perspective;

[0038] Figure 2 A schematic structural diagram of the rotating member and the proximity switch provided in this embodiment from a second viewing angle;

[0039] Figure 3A flowchart of the anti-collision method is provided for this embodiment.

[0040] Icons: 100-anti-collision device; 110-conveyor roller; 111-free roller; 120-rotating part; 130-proximity switch; 140-buffer; 150-material. DETAILED DESCRIPTION

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are intended to fall within the scope of protection of the present invention.

[0043] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0044] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the invention is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0045] In addition, the terms "first", "second", etc., if used, are merely used to distinguish and describe, and should not be understood as indicating or implying relative importance.

[0046] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0047] Under existing technology, photoelectric switches are commonly used as detection devices on the output rollers of quenching machines and the loading rollers of heat treatment cooling beds. These sensors collect steel plate position signals to control the roller's operating status. However, since water residue inevitably remains on the steel plate surface during the quenching process, this residue significantly affects the detection accuracy of the photoelectric switches, resulting in unstable signal output and difficulty in accurately controlling the steel plate's stopping position. To overcome this technical challenge, the industry generally uses through-beam laser detectors to replace traditional photoelectric switches, hoping to improve the accuracy and reliability of the detection system.

[0048] However, the inventors' in-depth research revealed that, in actual production environments, the laser detector's reflector is susceptible to contamination from workshop dust, process residues, and water stains. This causes fluctuations in the detection signal, making it impossible to completely resolve the automatic loading control issue on the quenching machine's output rollers. More seriously, due to the inaccuracy of the detection signal, the steel plates frequently exhibit positioning errors during transportation, causing them to collide with the buffer device at the end of the cooling bed's loading rollers and generate relative sliding friction on the roller surface. This phenomenon not only causes scratches on the steel plate surface, but also increases roller wear and damages the buffer device, seriously impacting product quality and the stability of equipment operation.

[0049] For the above questions, please refer to Figure 1 and Figure 2 This embodiment provides an anti-collision device 100, which includes a conveyor roller 110, a driver, a rotating member 120 and a proximity switch 130; the conveyor roller 110 is provided with a free roller 111 spaced apart from its end; the rotating member 120 is installed on the free roller 111; the rotating member 120, the proximity switch 130, the driver and the conveyor roller 110 are electrically connected in sequence.

[0050] Driven by a driver, the conveyor roller 110 transports material 150 toward its end. When material 150 reaches the free roller 111, it contacts the free roller 111, causing it to rotate, which in turn drives the rotating member 120. Because the rotating member 120 is equipped with blades, the blades gradually approach the proximity switch 130 during rotation. When the proximity switch 130 senses the blades, it sends a stop signal to the driver. Upon receiving the stop signal, the driver stops driving the conveyor roller 110, causing it to cease transporting material 150.

[0051] Based on the above anti-collision device 100, please refer to Figure 3 This embodiment provides an anti-collision method, the steps are as follows:

[0052] S110 : Install the rotating member 120 on the free roller 111 , with the end of the conveying roller 110 spaced apart from the free roller 111 .

[0053] S120: Control the driver to drive the conveyor roller 110 to convey the material 150 toward the end of the conveyor roller 110, so that when the material 150 moves to the position of the free roller 111 installed with the rotating member 120, the free roller 111 rotates and drives the rotating member 120 to rotate.

[0054] S130: The rotating member 120, the proximity switch 130 and the driver are electrically connected in sequence, so that after the proximity switch 130 senses the blades on the rotating member 120, it sends a stop signal to the driver for driving the conveyor roller 110. After receiving the stop signal, the driver stops driving the conveyor roller 110.

[0055] It should be noted that the material 150 in this embodiment is a steel plate, and the conveying roller 110 includes a quenching machine output roller and a heat treatment cooling bed loading roller. After the material 150 comes out of the quenching machine outlet, it moves to the quenching machine output roller. The quenching machine output roller transports the material 150 in the direction of the heat treatment cooling bed loading roller, and then moves the material 150 to the heat treatment cooling bed loading roller; the heat treatment cooling bed loading roller then transports the material 150 toward its end.

[0056] In this embodiment, a buffer 140 is installed at the end of the conveyor roller 110, specifically the end of the heat treatment cooling bed loading roller. A loading station is provided between the free roller 111 and the buffer 140. Once the material 150 has moved to the loading station, a robotic arm can remove the material 150 from the heat treatment cooling bed loading roller and load it. If the buffer 140 collides with the material 150, the material 150 can pass through the buffer 140, minimizing damage to the material 150. If the material 150 can be stopped in time and avoid colliding with the buffer 140, damage caused by the collision can be avoided.

[0057] It is understood that when the material 150 moves to the free roller 111, the free roller 111 begins to rotate driven by the material 150, thereby causing the rotating member 120 mounted on the free roller 111 to rotate. The anti-collision device 100 is provided with a fixed bracket to fix the proximity switch 130. During the rotation of the rotating member 120, the blade of the rotating member 120 gradually approaches the proximity switch 130. When the blade is directly opposite the proximity switch 130, the proximity switch 130 senses the blade and subsequently sends a stop signal to the driver. After receiving the stop signal, the driver stops driving the conveyor roller 110, thereby preventing the material 150 from continuing to move toward the end of the conveyor roller 110.

[0058] Therefore, this embodiment can drive the rotating part 120 to rotate through the rotation of the free roller 111, so that the proximity switch 130 can send a stop signal to the driver in time to stop the operation of the conveyor roller 110, thereby preventing the material 150 from continuing to move forward and colliding with the buffer 140 located at the end of the conveyor roller 110, avoiding damage to the material 150 and the buffer 140, and ensuring that the material 150 moves to the loading position between the free roller 111 and the buffer 140 to facilitate the transfer of the material 150.

[0059] In addition, the conveyor roller 110 in this embodiment uses the static friction between the roller and the material 150 to move the material 150 toward the end of the conveyor roller 110. If the material 150 collides with the buffer 140, it will cause the material 150 and the roller to slide relative to each other, generating sliding friction, thereby interfering and causing scratches on the surface of the material 150, affecting the quality of the material 150, and also causing wear of the rollers on the conveyor roller 110.

[0060] It should be noted that the driver can drive other rollers in the conveyor roller 110 to rotate, while the free roller 111 will not rotate under the drive of the driver; that is, the other rollers are active rollers, and the free roller 111 is a passive roller.

[0061] Therefore, this embodiment can prevent the material 150 from colliding with the buffer 140 and can also prevent the material 150 from sliding relative to the roller, thereby preventing damage to the material 150 and the buffer 140 and wear of the roller, thereby improving the quality of the material 150.

[0062] Based on the above, the proximity switch 130 in this embodiment can be a photoelectric sensor. When the blade is directly opposite the proximity switch 130, the blade blocks the light signal sent by the proximity switch 130, preventing the driver from receiving the light signal. Consequently, the driver stops driving the conveyor roller 110, thereby stopping the operation of the conveyor roller 110. The neutral position in which the blade blocks the light signal and prevents the driver from receiving the light signal can be understood as the proximity switch 130 sending a stop signal. When the driver senses the neutral position, it has received the stop signal and, in turn, stops driving the conveyor roller 110.

[0063] In other embodiments, the proximity switch 130 may also adopt various sensors such as inductive and capacitive sensors.

[0064] In this embodiment, please refer to Figure 1 and Figure 2 The bracket and the rotating member 120 are spaced apart, that is, the proximity switch 130 and the rotating member 120 are spaced apart; wherein, the spacing distance is a, 10mm≤a≤12mm; a can be 10mm, 10.7mm, 11.5mm and 12mm.

[0065] It is understandable that if the spacing distance is too small, the proximity switch 130 may not be able to accurately sense the position of the blade; if the spacing distance is too large, the proximity switch 130 may not be able to sense the blade on the rotating member 120.

[0066] Furthermore, in this embodiment, the step of installing the rotating member 120 on the free roller 111 and spacing the end of the conveying roller 110 from the free roller 111 includes:

[0067] S111: Determine the number of blades based on the circumference C of the free roller 111, the distance b between the end of the conveying roller 110 and the free roller 111, and the movement distance d of the material 150 during the rotation of the rotating member 120. The corresponding roller on the conveying roller 110 is the free roller 111.

[0068] It should be noted that in this embodiment, the rotating member 120 is mounted on the third-to-last roller in the conveyor roller 110, that is, the third-to-last roller is the free roller 111. The rotating member 120 is provided with four blades, which are arranged circumferentially around the rotation axis of the rotating member 120. It can be understood that the rotating member 120 is provided with four symmetrical blades.

[0069] The specific design of this embodiment is as follows:

[0070] Based on the length of the steel plate and the loading position, this embodiment selects the third-to-last roller as the free roller 111. If the third-to-last roller is the free roller 111, the rotating member 120 is installed on the third-to-last roller. The distance between the third-to-last roller and the end is 0.7m, that is, b = 0.7m. As can be understood, b is greater than the length of the steel plate.

[0071] The circumference of the free roller 111 is 1 m, that is, C=1 m. It can be understood that when the free roller 111 rotates one circle, the material 150 will move forward 1 m.

[0072] If the rotating member 120 is equipped with a blade, the proximity switch 130 needs to wait until the rotating member 120 rotates one full revolution before sensing the blade again. Therefore, the rotating member 120 has a period of one full revolution. Since the circumference of the free roller 111 is 1 meter, the material 150 will move 1 meter after the rotating member 120 rotates one full revolution, i.e., d = 1 meter. In this case, b < d, causing the material 150 to collide with the buffer 140 at the end, defeating the purpose of collision prevention.

[0073] If the rotating member 120 is equipped with two symmetrical blades, the proximity switch 130 will need to wait for the rotating member 120 to complete a half-turn before sensing the blades again. Therefore, the period of the rotating member 120 is half a turn. Since the circumference of the free roller 111 is 1 meter, the material 150 will move 0.5 meters after the rotating member 120 completes a half-turn. Furthermore, the material 150 has inertia, so the distance d moved by the material 150 is greater than b, causing the material 150 to collide with the buffer 140 at the end, thus defeating the purpose of collision prevention.

[0074] If the rotating member 120 has four symmetrical blades, the proximity switch 130 needs to wait until the rotating member 120 completes a quarter rotation before sensing the blades again. Therefore, the period of the rotating member 120 is a quarter rotation. Since the circumference of the free roller 111 is 1 meter, the material 150 will move 0.25 meters after the rotating member 120 completes a half rotation. Even if the material 150 continues to move a certain distance due to inertia, the distance d traveled by the material 150 is less than b. Therefore, the material 150 stops before contacting the buffer 140, thus preventing collision between the material 150 and the buffer 140 and allowing the material 150 to stop at the loading position, thus preventing damage to the material 150.

[0075] Based on the above, it can be understood that this embodiment can determine that rotating member 120 should be equipped with four symmetrical blades and mounted on the third-to-last roller, based on the circumference C of free roller 111 of 1 meter, the distance b of 0.7 meter between the third-to-last roller and the end of conveyor roller 110, and the distance d of 0.25 meter traveled by material 150 when rotating member 120 rotates a quarter of a turn. This prevents collision between material 150 and buffer 140, thus preventing damage to material 150 and buffer 140, and improving the quality of material 150.

[0076] If the rotating member 120 is provided with five blades circumferentially arranged around the rotating axis, the conveying roller will stop running after the material 150 moves 0.2m. Even if the material 150 will move a certain distance under the action of inertia, the distance moved by the material 150 is still not enough to enable the material 150 to reach the loading position, which is not conducive to subsequent loading work. Therefore, when the rotating member 120 is installed on the third-to-last roller, the rotating member 120 is provided with four symmetrical blades.

[0077] In other embodiments, a suitable roller can be set as the free roller 111 according to the size of the material 150 , and the number of blades on the rotating member 120 can be adjusted according to the distance between the free roller 111 and the end and the circumference of the free roller 111 .

[0078] For example, if the free roller 111 is the fourth-to-last roller, the distance between the fourth-to-last roller and the buffer 140 is 0.9 m, the circumference of the free roller 111 is 1 m, and the rotating member 120 is circumferentially provided with three blades around the axis of rotation, it can be understood that the conveyor roller 110 stops running after the material 150 moves 1 / 3 m. Even if the material 150 moves a certain distance under the action of inertia, the material 150 can stop moving before contacting the buffer 140, thereby avoiding collision between the material 150 and the buffer 140 and allowing the material 150 to reach the loading position.

[0079] Similarly, if the free roller 111 is the fourth roller from the end and the rotating member 120 is provided with four symmetrical blades, the moving distance of the material 150 will be too short, and the material 150 will not be able to move to the loading position, affecting subsequent loading work.

[0080] According to the above content, in order to prevent the material 150 from failing to move to the loading position due to insufficient moving distance, a delay device is provided at the proximity switch 130 in this embodiment.

[0081] Understandably, different materials 150 may vary in size. Therefore, some materials 150 may have less inertia, resulting in insufficient movement distance. Therefore, when the proximity switch 130 senses the blade on the rotating member 120, a delay device can be used to control the proximity switch 130 to send a stop signal to the driver after T1. T1 is the delay time. If T1 is 1 second, the proximity switch 130 will wait 1 second after sensing the blade before sending a stop signal to the driver.

[0082] It should be noted that, in other embodiments, the value of T1 can be adjusted according to the transport speed of the conveyor roller 110. If the transport speed of the conveyor roller 110 is fast, the delay time is short to avoid collision between the material 150 and the buffer 140.

[0083] Furthermore, since a sensor is provided at the quenching machine outlet in this embodiment, the sensor can sense whether the material 150 has left the quenching machine outlet. After the sensor senses that the material 150 has left the quenching machine outlet, the sensor sends a start signal to the driver to start the conveyor roller 110.

[0084] The timing starts from when the sensor sends a start signal to the driver. When the running time of the conveyor roller 110 reaches T2, the breaker disconnects the power supply of the driver; wherein T2 is the running time of the conveyor roller 110.

[0085] The value of T2 can be adjusted according to the length L of the conveyor roller 110, the speed V of the conveyor roller 110, and the distance e between the end of the conveyor roller 110 and the loading position. Specifically, T2 = (Le) / V.

[0086] Therefore, when the proximity switch 130 senses inaccurately or the rotating member 120 is damaged, the operation of the conveyor roller 110 can be stopped immediately, thereby avoiding collision between the material 150 and the buffer 140 .

[0087] Specifically, after the anti-collision device 100 is installed, it is necessary to use a PLC control program to program to realize the automatic parking and signal loading functions between the quenching machine output roller and the cooling bed loading roller.

[0088] In the program, the end enable signal for the quenching machine's runout conveyor is defined as an intermediate variable, M206.0. When the quenching machine's runout conveyor completes its steel plate conveying task, M206.0 triggers a falling edge signal. This falling edge signal controls a circuit breaker to stop the quenching machine's runout conveyor. In this embodiment, the circuit breaker's preset timer is T2 = 1 minute 50 seconds. This means that the quenching machine's runout conveyor will not stop until 1 minute 50 seconds have passed since the falling edge of M206.0 is triggered.

[0089] When the intermediate variable M206.0 for the quenching machine's outfeed rollers finishes triggering, its falling edge triggers another intermediate variable, M206.4. The triggering of M206.4 causes the SR flip-flop to set intermediate variable M206.1 to 1. Next, intermediate variable M206.3 is activated, causing the quenching machine's outfeed rollers and the cooling bed's loading rollers to begin operating, jointly completing the steel plate conveying task. Simultaneously, the falling edge triggers another intermediate variable, M303.7, further ensuring that the quenching machine's outfeed rollers and the cooling bed's loading rollers stop synchronously.

[0090] It can be understood that the working principle of the anti-collision device 100 provided in this embodiment is as follows:

[0091] First, after the sensor senses that the material 150 leaves the quenching machine outlet, it sends a start signal to the driver (the input signal of I5.3 in the PLC is "1") to start the quenching output roller in the conveyor roller 110.

[0092] Subsequently, the quenching output roller transports material 150 in the direction of the heat treatment cooling bed loading roller. During the process of the quenching conveyor roller 110 conveying material 150, the falling edge of I5.3 in the PLC causes the input signal to change from "1" to "0".

[0093] Secondly, when the material 150 moves from the quenching output roller to the heat treatment cooling bed loading roller, the input signal of I5.3 changes to "0", causing the quenching output roller to stop running and starting the heat treatment cooling bed loading roller in the conveying roller 110.

[0094] Next, the heat treatment cooling bed loading roller conveys the material 150 toward its end. When the material 150 reaches the free roller, the rotating member 120 rotates. When the blade of the rotating member 120 is facing the proximity switch 130, the proximity switch 130 senses the blade on the rotating member 120.

[0095] Finally, the proximity switch 130 sends a stop signal to the driver (the input signal of I7.7 in the PLC is 1) to stop the operation of the heat treatment cooling efficiency device.

[0096] In summary, this embodiment provides an anti-collision device 100 and method. In this embodiment, a rotating member 120 is mounted on the free roller 111 of a conveyor roller 110. A driver is controlled to drive the conveyor roller 110 to convey material 150. When material 150 reaches the free roller 111, the free roller 111 drives the rotating member 120 to rotate. Rotating member 120 rotates and is electrically connected to a proximity switch 130. When the proximity switch 130 senses the blades on the rotating member 120, it sends a stop signal to the driver. Because the driver is electrically connected to the proximity switch 130, it stops driving the conveyor roller 110. This stops the conveyor roller 110, halting the material 150 and preventing it from colliding with the buffer 140 at the end of the conveyor roller 110. This prevents damage to the material 150 and the buffer 140, thereby ensuring the quality of the material 150.

[0097] The above description is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with this technical field within the technical scope disclosed in the present invention should be covered by the scope of protection of the present invention.

Claims

1. An anti-collision device, characterized in that: include: A conveying roller (110), wherein the conveying roller (110) is provided with a free roller (111) spaced apart from an end thereof; A driver electrically connected to the conveying roller (110); A rotating member (120), the rotating member (120) being mounted on the free roller (111); the rotating member (120) being provided with blades; a proximity switch (130), the proximity switch (130) being electrically connected to the rotating member (120) and the driver; The conveyor roller (110) is used to convey a material (150) toward its end; the proximity switch (130) is used to sense the blade, and when the proximity switch (130) senses the blade, the proximity switch (130) is used to send a stop signal to the driver; and the driver is used to drive the conveyor roller (110) and to receive the stop signal.

2. The anti-collision device according to claim 1, characterized in that: The free roller (111) is the third roller from the end of the conveying roller (110); The number of the blades is four; the four blades are circumferentially arranged around the rotation axis of the rotating member (120).

3. The anti-collision device according to claim 1, characterized in that: The anti-collision device (100) comprises a bracket, the proximity switch (130) is fixed to the bracket, and the bracket and the rotating member (120) are spaced apart.

4. The anti-collision device according to claim 3, characterized in that: The spacing distance between the rotating member (120) and the proximity switch (130) is a, wherein 10 mm ≤ a ≤ 12 mm.

5. An anti-collision method based on the anti-collision device according to any one of claims 1 to 4, characterized in that: include: The rotating member (120) is mounted on the free roller (111), and the end of the conveying roller (110) is spaced apart from the free roller (111); controlling a driver to drive the conveying roller (110) to convey a material (150) toward an end of the conveying roller (110), so that when the material (150) moves to a position where the free roller (111) mounted on the rotating member (120) is located, the free roller (111) rotates and drives the rotating member (120) to rotate; The rotating member (120), the proximity switch (130) and the driver are electrically connected in sequence, so that after the proximity switch (130) senses the blades on the rotating member (120), it sends a stop signal to the driver for driving the conveying roller (110), and the driver stops driving the conveying roller (110) after receiving the stop signal.

6. The anti-collision method according to claim 5, characterized in that: The step of installing the rotating member (120) on the free roller (111) and spacing the end of the conveying roller (110) from the free roller (111) comprises: The number of blades is determined based on the circumference C of the free roller (111), the distance b between the end of the conveying roller (110) and the free roller (111), and the moving distance d of the material (150) during the rotation of the rotating member (120).

7. The anti-collision method according to claim 6, characterized in that: Based on the fact that C is 1 m, the distance b between the third-to-last roller and the end of the conveying roller (110) is 0.7 m, and the moving distance d of the material (150) is 0.25 m when the rotating member (120) rotates a quarter of a circle, it is determined that the rotating member (120) is provided with four symmetrical blades.

8. The anti-collision method according to claim 7, characterized in that: The design method for providing the rotating member (120) with four symmetrical blades includes: The rotating member (120) is installed on the third-to-last roller, and the distance between the third-to-last roller and the end of the conveying roller (110) is 0.7 m; If the rotating member (120) is provided with a blade, the period of the rotating member (120) is one cycle, and after the material (150) moves 1 meter, the conveying roller (110) stops running, causing the material (150) to collide with the buffer (140) at the end; If the rotating member (120) is provided with two symmetrical blades, and the period of the rotating member (120) is half a cycle, after the material (150) moves 0.5 m, the conveying roller (110) stops running, causing it to collide with the buffer (140) under the action of inertia; If the rotating member (120) is provided with four symmetrical blades, the period of the rotating member (120) is a quarter of a turn, and after the material (150) moves 0.25 m, the conveying roller (110) stops running, and the material (150) is located at the loading position; Based on inference, the rotating member (120) is provided with four symmetrical blades.

9. The anti-collision method according to any one of claims 5 to 8, characterized in that: The anti-collision method of the conveyor roller (110) further includes: A delay device is provided at the proximity switch (130). When the proximity switch (130) senses the blade on the rotating member (120), the delay device controls the proximity switch (130) to send a stop signal to the driver after T1, wherein T1 is the delay time.

10. The anti-collision method according to any one of claims 5 to 8, characterized in that: The anti-collision method of the conveyor roller (110) further includes: After the sensor senses that the material (150) leaves the quenching machine outlet, it sends a start signal to the driver to start the conveying roller (110); Timing starts when the sensor sends a start signal to the driver, and when the running time of the conveyor roller (110) reaches T2, the breaker disconnects the power supply of the driver; wherein T2 is the running time of the conveyor roller (110).

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