A loose monitoring trigger device for a clamp device of an angle steel production line

Abstract

The utility model belongs to the loose state monitoring technical field, specifically is a angle steel production line clamping device loose monitoring trigger device, including work table, the middle part of work table lateral wall is equipped with operation platform, the middle part of operation platform lateral wall is installed with a plurality of control buttons, the work table top is equipped with the adjusting assembly, the adjusting assembly top is fixed with the clamping seat, the middle part of clamping seat lateral wall is equipped with first motor, first motor output is fixedly connected with first two -way screw rod, can real -time detection loose state in the angle steel processing process through the setting monitoring assembly, timely trigger stop, reduce the displacement of the angle steel because of clamping loose, bounce even throw out, guarantee production safety, and the size precision requirement is strict to angle steel processing, and clamping loose can lead to work piece in the processing process deviation, directly cause product size out -of -tolerance, the scrap rate rise, monitoring trigger device can make the clamping force always meet the process requirement, improve the consistency of processing accuracy.

Description

Technical Field

[0001] This utility model belongs to the field of loosening state monitoring technology, specifically a loosening monitoring triggering device for an angle steel production line clamping device. Background Technology

[0002] Angle steel is a hot-rolled steel material with an "L" shaped cross section, also known as angle iron. Its cross section consists of two mutually perpendicular steel strips. The "L" shaped structure gives it good compressive and bending resistance, and it can withstand loads in different directions. It is suitable as a load-bearing component or connecting part, and is one of the commonly used profiles in the fields of construction and machinery manufacturing.

[0003] In angle steel production (such as rolling, cutting, drilling, and welding), clamping the workpiece is a crucial operation to ensure production quality, efficiency, and safety. Its core purpose is to limit the displacement and vibration of the angle steel, ensuring a stable and controllable processing flow. Through long-term use and observation, it has been found that loosening of the angle steel clamping device during processing can lead to decreased processing accuracy, causing product deformation or scrap.

[0004] Therefore, this utility model provides a loosening monitoring trigger device for the clamping device of an angle steel production line. Utility Model Content

[0005] To overcome the shortcomings of the existing technology and solve at least one of the problems mentioned in the background technology, a loosening monitoring trigger device for the clamping device of the angle steel production line is proposed.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A loosening monitoring and triggering device for a clamping device in an angle steel production line, as described in this utility model, includes a workbench. An operating table is mounted on the middle of the side wall of the workbench. Multiple control buttons are installed on the middle of the side wall of the operating table. An adjustment assembly is provided on the top of the workbench. A clamping seat is fixed on the top of the adjustment assembly. A first motor is mounted on the middle of the side wall of the clamping seat. A first bidirectional threaded rod is fixedly connected to the output end of the first motor. A pair of movable seats are slidably connected to the middle of the side wall of the first bidirectional threaded rod. Multiple movable rods are slidably connected to the middle of the side wall. Clamping blocks are fixed to the ends of the movable rods. Springs are fixed between the clamping blocks and the movable seat, and the spring covers the outside of the movable rods. A monitoring component is provided in the middle of the side wall of the clamping seat, located below the clamping blocks. Positioning components are provided on both sides of the worktable. Each monitoring component includes a pair of slots located in the middle of the side wall of the worktable. A pair of electric actuators are mounted in the middle of the side wall of the clamping seat, sliding within the slots. A connecting rod is fixed to the output end of each electric actuator, and the end of the connecting rod rotates... The monitoring component includes a conductive ball connected to the angle steel. It also includes a detection unit that detects whether the conductive ball is in contact with the loose angle steel and outputs a detection signal upon contact. The detection unit includes a power supply, an electromagnetic relay KM, and a first resistor R. The electromagnetic coil of the electromagnetic relay KM is connected in series with the power supply and the first resistor R, and the two ends of the series circuit are connected to the conductive ball and the monitoring plate on the angle steel surface, respectively. The detection unit is connected to an execution unit that can receive the detection signal and control the production line to stop. The execution unit includes a second resistor R connected in series in the power supply circuit of the production line. The normally closed contact KM- of the electromagnetic relay KM is connected in series with the second resistor R. This step, by setting up the monitoring component, can detect the loosening state of the angle steel in real time during processing, triggering a stop in time, reducing displacement, bouncing, or even ejection of the angle steel due to clamping looseness, ensuring production safety. Furthermore, angle steel processing requires strict dimensional accuracy; clamping looseness can cause the workpiece to shift during processing, directly resulting in out-of-tolerance product dimensions and increased scrap rate. The monitoring triggering device ensures that the clamping force always meets the process requirements, improving the consistency of processing accuracy.

[0007] Preferably, the adjustment component includes a pair of first grooves, and a pair of second motors are mounted in the middle of the side wall of the worktable. The second motors and the first grooves are correspondingly arranged. A second bidirectional threaded rod is fixedly connected to the output end of the second motor. The second bidirectional threaded rod rotates inside the first groove. A pair of movable seats slide on the side wall of the second bidirectional threaded rod. The pair of movable seats move towards each other. This step of setting the first grooves, the second motors, and the second bidirectional threaded rods can quickly adapt to angle steel of different lengths by adjusting the distance between the movable seats. There is no need to equip each specification with a special fixture. It can adapt to the processing needs of multiple specifications, reduce the dependence on special fixtures, improve the versatility of the production line, and the adjustment component can complete the parameter adjustment in a short time, quickly adapt to the new specification angle steel, reduce the changeover time, and improve the continuity of production.

[0008] Preferably, the positioning component includes multiple support rods, which are rotatably connected to the side wall of the workbench. A corrugated pipe is fixed to the end of each support rod. The corrugated pipe is made of a deformable material, and a laser positioning device is mounted on the end of the corrugated pipe. This step of setting up the support rods, corrugated pipe, and laser positioning device allows for the projection of clear positioning marks onto the surface of the angle steel using a high-brightness laser beam, directly indicating the processing reference and achieving high-precision positioning. This reduces problems such as hole offset, dimensional deviation, and skewed cuts caused by manual measurement errors.

[0009] Preferably, the bottom of the movable seat is provided with a plurality of second grooves, and a ball is rotatably connected to the middle of the inner sidewall of the second groove. This step, by setting a plurality of balls between the movable seat and the clamping seat, can change the relative movement between the movable seat and the clamping seat from "surface contact sliding" to "rolling of the ball and the contact surface", reducing frictional resistance. At the same time, when the plurality of balls are evenly arranged, the load of the movable seat can be distributed to each ball and then transmitted to the clamping seat, reducing the deformation or wear of the contact surface caused by excessive local pressure.

[0010] Preferably, an alarm is installed in the middle of the side wall of the control panel. The alarm has a built-in reminder unit, which includes a light bulb L, a buzzer H, and a third resistor R. The light bulb L and the buzzer H are connected in parallel. The two ends of the parallel circuit are respectively connected to the normally open contact KM- of the electromagnetic relay KM and the third resistor R. The other end of the normally open contact KM- of the electromagnetic relay KM is connected to the power supply VCC, and the other end of the third resistor R is grounded. This step of setting up the alarm can break the "visual blind spot" through forced reminders, so that problems are noticed at the first time, strengthen operating procedures, and reduce the risk of human negligence.

[0011] Preferably, the clamping block is made of an elastic material or an anti-slip material. This step, by setting the clamping block to an anti-slip material, can increase the static friction between the clamping block and the surface of the angle steel, and reduce the displacement or rotation of the angle steel due to external force when it is clamped.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. The loosening monitoring and triggering device for the clamping device of the angle steel production line described in this utility model can detect the loosening state of the angle steel in real time by setting up monitoring components, and trigger the machine to stop in time, reducing the displacement, bouncing or even throwing out of the angle steel due to clamping loosening, ensuring production safety. Moreover, angle steel processing has strict requirements for dimensional accuracy. Clamping loosening will cause the workpiece to shift during processing, directly causing product dimensional deviation and increasing scrap rate. The monitoring and triggering device can ensure that the clamping force always meets the process requirements and improve the consistency of processing accuracy.

[0014] 2. The loosening monitoring trigger device for the clamping device of the angle steel production line described in this utility model is equipped with a first groove, a second motor, and a second bidirectional threaded rod. It can quickly adapt to angle steels of different lengths by adjusting the distance between the movable seats, without the need to equip each specification with a special clamp. It can adapt to the processing needs of multiple specifications, reduce the dependence on special clamps, improve the versatility of the production line, and the adjustment component can complete the parameter adjustment in a short time, quickly adapt to the new specification angle steel, reduce changeover time, and improve production continuity. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 This is a perspective view of the present invention;

[0017] Figure 2 This is a schematic diagram of the cooperative structure between the movable seat and the operating table in this utility model;

[0018] Figure 3 This is a schematic diagram of the cooperation structure between the clamping block and the conductive ball block in this utility model;

[0019] Figure 4 This is a circuit diagram of the detection unit in this utility model;

[0020] Figure 5 This is the circuit schematic diagram of the execution unit in this utility model;

[0021] Figure 6 This is the circuit diagram of the reminder unit in this utility model.

[0022] Legend:

[0023] 1. Workbench; 11. Control panel; 12. Control button; 13. Clamping seat; 14. First motor; 15. First bidirectional threaded rod; 16. Movable seat; 17. Movable rod; 18. Clamping block; 19. Spring; 2. Groove; 21. Electric actuator; 22. Connecting rod; 23. Conductive ball block; 3. First groove; 31. Second motor; 32. Second bidirectional threaded rod; 4. Support rod; 41. Bellows; 42. Laser positioning device; 5. Second groove; 51. Ball bearing; 6. Alarm. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] Specific implementation examples are given below.

[0026] like Figures 1 to 3As shown in the figure, a loosening monitoring triggering device for a clamping device in an angle steel production line according to an embodiment of the present invention includes a workbench 1. An operating table 11 is mounted on the middle of the side wall of the workbench 1. Multiple control buttons 12 are installed on the middle of the side wall of the operating table 11. An adjustment assembly is provided on the top of the workbench 1. A clamping seat 13 is fixed on the top of the adjustment assembly. A first motor 14 is mounted on the middle of the side wall of the clamping seat 13. A first bidirectional threaded rod 15 is fixedly connected to the output end of the first motor 14. A pair of movable seats 16 are slidably connected to the middle of the side wall of the first bidirectional threaded rod 15. Multiple movable rods 17 are slidably connected to the middle of the side wall of the movable seats 16. A clamping block 18 is fixedly connected to the end of the movable rod 17. A spring 19 is fixed between the clamping block 18 and the movable seat 16. The spring 19 covers the outside of the movable rod 17. A monitoring assembly is provided on the middle of the side wall of the clamping seat 13. The monitoring assembly is located below the clamping block 18. Positioning assemblies are provided on both sides of the workbench 1. The operator uses the adjustment component to adjust the position of the movable seat 16 according to the length of the angle steel to be processed. Then, the angle steel to be processed is placed between a pair of movable seats 16. The positioning component is then used to check the position of the angle steel. The operator starts the first motor 14, which drives the first bidirectional threaded rod 15 to rotate. When the first bidirectional threaded rod 15 rotates, it drives a pair of movable seats 16 to move along its side wall. At this time, the pair of movable seats 16 move closer to the angle steel from both sides. During the movement of the movable seats 16, multiple clamping blocks 18 on the side wall of the movable seats 16 will contact the angle steel and press against the surface of the angle steel under the push of the movable seats 16, the movable rod 17, and the spring 19. At this time, multiple clamping blocks 18 will clamp from both sides of the angle steel. After the angle steel is fixed in position, a pair of monitoring plates are attached to the side wall of the angle steel. The monitoring plates are made of conductive material. When the angle steel becomes loose, the monitoring plates will contact the monitoring component, at which point the production line stops working.

[0027] like Figures 1 to 5As shown, the monitoring component includes a pair of slots 2, which are located in the middle of the side wall of the workbench 1. A pair of electric push rods 21 are mounted in the middle of the side wall of the clamping seat 13. The electric push rods 21 slide inside the slots 2. A connecting rod 22 is fixedly connected to the output end of the electric push rod 21. A conductive ball 23 is rotatably connected to the end of the connecting rod 22. The monitoring component also includes a detection unit that detects whether the conductive ball 23 is in contact with the loose angle steel and outputs a detection signal when contact occurs. The detection unit includes a power supply, an electromagnetic relay KM1, and a first resistor R1. The electromagnetic coil of the electromagnetic relay KM1 is connected in series with the power supply and the first resistor R1, and the two ends of the series circuit are respectively connected to the conductive ball 23 and the monitoring plate on the surface of the angle steel. The detection unit is connected to an execution unit, which can receive the detection signal and control the production line to stop. The execution unit includes a second resistor R2 connected in series in the power supply circuit of the production line. The normally closed contact KM1-1 of the electromagnetic relay KM1 is connected in series with the second resistor R2. After the angle steel is fixed in position, the machining personnel... The operator attaches a pair of monitoring plates to the side wall of the angle steel, and then activates multiple electric actuators 21. The electric actuators 21 push the connecting rods 22, causing the connecting rods 22 to move the conductive balls 23 synchronously, suspending the conductive balls 23 below the monitoring plates. When the angle steel loosens, the monitoring plates will contact the conductive balls 23. Since both the monitoring plates and the conductive balls 23 are conductive materials, when the monitoring plates contact the lower conductive balls 23, the detection unit sends a detection signal. When the execution unit receives the detection signal, the normally closed contact KM1-1 of the electromagnetic relay KM1 opens, and the production line stops working. This step, by setting up a monitoring component, can detect the loosening state of the angle steel in real time during the processing, triggering a stop in time, reducing the displacement, bouncing, or even being thrown out of the angle steel due to clamping loosening, ensuring production safety. Moreover, angle steel processing has strict requirements for dimensional accuracy. Clamping loosening will cause the workpiece to shift during processing, directly causing product dimensional deviations and an increase in scrap rate. The monitoring triggering device can ensure that the clamping force always meets the process requirements, improving the consistency of processing accuracy.

[0028] like Figure 1 and Figure 2As shown, the adjustment assembly includes a pair of first grooves 3, and a pair of second motors 31 are mounted in the middle of the side wall of the worktable 1. The second motors 31 and the first grooves 3 are correspondingly arranged. A second bidirectional threaded rod 32 is fixedly connected to the output end of the second motor 31. The second bidirectional threaded rod 32 rotates inside the first groove 3, and a pair of movable seats 16 slide on the side wall of the second bidirectional threaded rod 32. The pair of movable seats 16 move towards each other. When the angle steel to be processed is too long or too short, the operator starts the pair of second motors 31. The second motors 31 drive the second bidirectional threaded rod 32 to rotate inside the first groove 3. 2. When rotating, it will drive a pair of movable seats 16 to move along its side wall. The processing personnel can change the distance between the pair of movable seats 16 to adapt to angle steel of different lengths. This step is equipped with a first groove 3, a second motor 31 and a second bidirectional threaded rod 32. By adjusting the distance between the movable seats 16, angle steel of different lengths can be quickly adapted without the need to equip each specification with a special fixture. This adapts to the processing needs of multiple specifications, reduces the dependence on special fixtures, improves the versatility of the production line, and the adjustment component can complete the parameter adjustment in a short time, quickly adapt to the new specification angle steel, reduce changeover time and improve production continuity.

[0029] like Figure 1 and Figure 2 As shown, the positioning assembly includes multiple support rods 4, which are rotatably connected to the side wall of the workbench 1. A corrugated pipe 41 is fixed to the end of the support rod 4. The corrugated pipe 41 is made of a deformable material, and a laser positioning device 42 is mounted on the end of the corrugated pipe 41. After the angle steel is clamped, the operator rotates the multiple support rods 4 and pulls the corrugated pipe 41 until the laser positioning device 42 is aligned with the angle steel. Then, the horizontal position of the angle steel is adjusted by the laser beam emitted by the laser positioning device 42. This step, which sets up the support rods 4, corrugated pipe 41, and laser positioning device 42, can project clear positioning marks on the surface of the angle steel with a high-brightness laser beam, directly indicating the processing reference, achieving high-precision positioning, and reducing problems such as hole offset, dimensional deviation, and skewed cut caused by manual measurement errors.

[0030] like Figure 3 As shown, the bottom of the movable seat 16 is provided with multiple second grooves 5, and a ball bearing 51 is rotatably connected to the middle of the inner side wall of the second groove 5. By setting multiple balls bearing 51 between the movable seat 16 and the clamping seat 13, the relative movement between the movable seat 16 and the clamping seat 13 can be changed from "surface contact sliding" to "rolling of the ball bearing 51 and the contact surface", reducing frictional resistance. At the same time, when multiple balls bearing 51 are evenly arranged, the load of the movable seat 16 can be distributed to each ball bearing 51 and then transmitted to the clamping seat 13, reducing the deformation or wear of the contact surface caused by excessive local pressure.

[0031] like Figure 2 and Figure 6As shown, an alarm 6 is installed in the middle of the side wall of the control panel 11. The alarm 6 has a built-in reminder unit, which includes a bulb L, a buzzer H, and a third resistor R3. The bulb L and the buzzer H are connected in parallel. The two ends of the parallel circuit are connected to the normally open contact KM1-2 of the electromagnetic relay KM1 and the third resistor R3, respectively. The other end of the normally open contact KM1-2 of the electromagnetic relay KM1 is connected to the power supply VCC, and the other end of the third resistor R3 is grounded. When the reminder unit receives a detection signal, the normally open contact KM1-2 of the electromagnetic relay KM1 closes, the bulb LED lights up, and the buzzer H sounds. This step of setting up the alarm 6 can break the "visual blind spot" through forced reminder, so that the problem is noticed at the first time, strengthen the operation standard, and reduce the risk of human negligence.

[0032] like Figures 1 to 3 As shown, clamping block 18 is made of elastic material and anti-slip material. By setting clamping block 18 to anti-slip material, this step can increase the static friction between clamping block 18 and the surface of angle steel, and reduce the displacement or rotation of angle steel due to external force in the clamped state.

[0033] Working principle: The operator uses the adjustment component to adjust the position of the movable seat 16 according to the length of the angle steel to be processed. Then, the angle steel to be processed is placed between a pair of movable seats 16. The positioning component is then used to check the position of the angle steel. The operator starts the first motor 14, which drives the first bidirectional threaded rod 15 to rotate. When the first bidirectional threaded rod 15 rotates, it drives the pair of movable seats 16 to move along its side wall. At this time, the pair of movable seats 16 move closer to the angle steel from both sides. During the movement of the movable seats 16, multiple clamping blocks 18 on the side wall of the movable seats 16 will... The angle steel contacts and is pressed against the surface of the angle steel by the movable seat 16, movable rod 17 and spring 19. At this time, multiple clamping blocks 18 will clamp from both sides of the angle steel. After the angle steel is fixed in position, a pair of monitoring plates are attached to the side wall of the angle steel. The monitoring plates are made of conductive material. When the angle steel is loose, the monitoring plates will contact the monitoring components. At this time, the production line stops working. After the angle steel is fixed in position, the processing personnel attach a pair of monitoring plates to the side wall of the angle steel, and then start multiple electric push rods 21. The electric push rods 21 will push the connecting rod 22, so that the connecting rod 22 drives the conductive ball block 23 to move synchronously. The conductive ball 23 is suspended below the monitoring plate. When the angle steel loosens, the monitoring plate will contact the conductive ball 23. Since both the monitoring plate and the conductive ball 23 are conductive materials, when the monitoring plate contacts the lower conductive ball 23, the detection unit sends a detection signal. When the execution unit receives the detection signal, the normally closed contact KM1-1 of the electromagnetic relay KM1 opens, and the production line stops working. When the angle steel to be processed is too long or too short, the processing personnel start a pair of second motors 31. The second motors 31 will drive the second bidirectional threaded rod 32 to rotate inside the first groove 3. When the second bidirectional threaded rod 32 rotates, it drives a pair of movable seats 16 to move along its side wall. The operator can adjust the distance between the pair of movable seats 16 to accommodate angle steel of different lengths. After the angle steel is clamped, the operator rotates multiple support rods 4 and pulls the bellows 41 until the laser positioning device 42 is aligned with the angle steel. Then, the laser beam emitted by the laser positioning device 42 is used to adjust the horizontal position of the angle steel. When the reminder unit receives the detection signal, the normally open contact KM1-2 of the electromagnetic relay KM1 closes, the LED bulb lights up, and the buzzer H sounds.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A loosening monitoring and triggering device for a clamping device in an angle steel production line, comprising a workbench (1), characterized in that: An operating table (11) is mounted on the middle of the side wall of the workbench (1). Multiple control buttons (12) are installed on the middle of the side wall of the operating table (11). An adjustment assembly is provided on the top of the workbench (1). A clamping seat (13) is fixed on the top of the adjustment assembly. A first motor (14) is mounted on the middle of the side wall of the clamping seat (13). A first bidirectional threaded rod (15) is fixedly connected to the output end of the first motor (14). A pair of bidirectional threaded rods (15) are slidably connected to the middle of the side wall of the first bidirectional threaded rod (15). The movable seat (16) has multiple movable rods (17) slidably connected to the middle of its side wall. A clamping block (18) is fixed to the end of each movable rod (17). A spring (19) is fixed between the clamping block (18) and the movable seat (16). The spring (19) covers the outside of the movable rod (17). A monitoring component is provided in the middle of the side wall of the clamping seat (13). The monitoring component is located below the clamping block (18). Positioning components are provided on both sides of the worktable (1).

2. The loosening monitoring and triggering device for the clamping device of an angle steel production line according to claim 1, characterized in that: The monitoring component includes a pair of slots (2) located in the middle of the side wall of the workbench (1). A pair of electric actuators (21) are mounted in the middle of the side wall of the clamping seat (13). The electric actuators (21) slide inside the slots (2). A connecting rod (22) is fixedly connected to the output end of the electric actuator (21). A conductive ball (23) is rotatably connected to the end of the connecting rod (22). The monitoring component also includes a detection unit that detects whether the conductive ball (23) is in contact with the loose angle steel and outputs a detection signal when contact occurs. The unit includes a power supply, an electromagnetic relay KM1, and a first resistor R1. The electromagnetic coil of the electromagnetic relay KM1 is connected in series with the power supply and the first resistor R1, and the two ends of the series circuit are respectively connected to the conductive ball block (23) and the angle steel surface monitoring plate. The detection unit is connected to an execution unit, which can receive the detection signal and control the production line to stop. The execution unit includes a second resistor R2 connected in series in the power supply circuit of the production line. The normally closed contact KM1-1 of the electromagnetic relay KM1 is connected in series with the second resistor R2.

3. The loosening monitoring and triggering device for the clamping device of an angle steel production line according to claim 1, characterized in that: The adjustment assembly includes a pair of first grooves (3), and a pair of second motors (31) are mounted in the middle of the side wall of the worktable (1). The second motors (31) and the first grooves (3) are arranged correspondingly. The output end of the second motors (31) is fixedly connected to a second bidirectional threaded rod (32). The second bidirectional threaded rod (32) rotates inside the first groove (3). A pair of movable seats (16) slide on the side wall of the second bidirectional threaded rod (32). The pair of movable seats (16) move towards each other.

4. The loosening monitoring and triggering device for the clamping device of an angle steel production line according to claim 1, characterized in that: The positioning component includes multiple support rods (4), which are rotatably connected to the side wall of the workbench (1). A corrugated pipe (41) is fixed at the end of the support rod (4). The corrugated pipe (41) is made of a deformable material, and a laser positioning device (42) is mounted at the end of the corrugated pipe (41).

5. The loosening monitoring triggering device for the clamping device of an angle steel production line according to claim 3, characterized in that: The bottom of the movable seat (16) is provided with a plurality of second grooves (5), and a ball bearing (51) is rotatably connected to the middle of the inner side wall of the second groove (5).

6. The loosening monitoring triggering device for the clamping device of an angle steel production line according to claim 1, characterized in that: An alarm (6) is installed in the middle of the side wall of the operating console (11). The alarm (6) has a built-in reminder unit. The reminder unit includes a bulb L, a buzzer H and a third resistor R3. The bulb L and the buzzer H are connected in parallel. The two ends of the parallel circuit are respectively connected to the normally open contact KM1-2 of the electromagnetic relay KM1 and the third resistor R3. The other end of the normally open contact KM1-2 of the electromagnetic relay KM1 is connected to the power supply VCC, and the other end of the third resistor R3 is grounded.

7. The loosening monitoring and triggering device for the clamping device of an angle steel production line according to claim 1, characterized in that: The clamping block (18) is made of elastic material and the clamping block (18) is made of anti-slip material.

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