A plate straightening machine warping detection device

Abstract

The present invention discloses a device for detecting warping of a plate straightening machine, comprising a detection base, a connecting frame, a rocker arm, a steel wire rope, a fixed pulley, a spring, a slide plate, and a proximity switch. The detection base and the connecting frame are fixed to the upper and lower parts of the straightening machine platform, respectively. The rocker arm is located above and behind the roller guard plate on the outlet side of the straightening machine. The upper and middle parts of the rocker arm are rotatably connected to the connecting frame. The fixed pulley is mounted on one end of the detection base. One end of the steel wire rope is connected to the upper end of the rocker arm, and the other end passes around the fixed pulley and is connected to the other end of the detection base in sequence through the slide plate and the spring. The proximity switch is fixed to the detection base and corresponds to the trigger boss on the slide plate. The rocker arm of the present invention drives the slide plate to move via the steel wire rope, the fixed pulley, and the spring, and the trigger boss on the slide plate triggers the proximity switch. By increasing the length of the steel wire rope, the proximity switch can be kept away from areas with high temperature, dust, and water mist, thereby improving the operational reliability of the equipment.

Description

Technical Field

[0001] The invention relates to a plate warping detection device used on a plate straightening machine, belonging to the technical field of metal machining without cutting. Background Art

[0002] The straightening machine is a critical piece of equipment in hot-rolled medium and heavy plate production lines, serving as a crucial process for optimizing plate performance and ensuring that plate flatness meets standards. During the straightening process, warping of the plate is common due to factors such as incorrect straightening parameter and model setup and debugging during new product development, abnormal steel temperatures, system communication failures, information transmission errors, straightening model calculation errors, manual intervention in straightening under abnormal circumstances, inappropriate parameter settings, and inexperienced operators. These warped plates are highly susceptible to impacting the straightening machine and subsequent equipment, leading to production halts and equipment damage.

[0003] In order to solve the above problems, an anti-warping detection device is usually installed on the outlet side of the hot straightening machine, such as Figure 13 As shown, the existing detection device is usually composed of an anti-collision bar 001, a rotating shaft 002, a connecting seat 003, a baffle 004, a limit switch 005, etc. The anti-collision bar 001 naturally hangs down under the action of gravity. When the warped steel plate hits the anti-collision bar 001, the anti-collision bar 001 will rotate, and the limit switch 005 detects the baffle signal, interlocks and stops further straightening to prevent the warped steel plate from damaging the equipment.

[0004] Since the curvature radius of the steel plate after straightening is affected by many factors and cannot be predicted, when the curvature radius is small, the steel plate will suddenly warp between the roller guard plate 02 and the anti-collision bar 001 after straightening (such as Figure 13 As shown by the dotted line Ⅰ in the figure), the steel plate cannot touch the anti-collision bar 001, resulting in the missed detection of the warping head with a small curvature radius; when the curvature radius of the upward warping is large, the steel plate slowly warps up under the anti-collision bar 001 after straightening (as shown in the dotted line Ⅰ in the figure). Figure 13 As shown by the dotted line III in the figure), it is very easy to bypass the anti-collision bar 001 and cause the missed detection of the large curvature radius head. Figure 13 It can be seen that moving the anti-collision bar 001 toward the roller guard plate 02 can effectively prevent the missed detection of warps with small curvature radius, but it will increase the missed detection of warps with large curvature radius. Moving the anti-collision bar 001 downward can reduce the missed detection of warps with large curvature radius, but it will cause the slightly warped steel plates that can be straightened by reverse straightening to frequently collide with the anti-collision bar 001, resulting in interlocking and stopping, affecting the normal production rhythm.

[0005] In addition, the temperature at the straightening machine site is high, and there is a lot of dust (iron oxide powder) and water mist, and the environment is relatively harsh. The existing anti-warping detection devices are mostly installed under the straightening machine platform or on both sides of the roller. Electronic components such as limit switches or gratings are greatly affected by the temperature, dust, water mist, etc. of the straightening steel plate, and are easily damaged and fail. At the same time, since the effective detection distance of the limit switch is limited, it is easy to fail if the detection distance is set too far. If the detection distance is set too close, the anti-collision bar is very likely to move axially or vibrate, causing the limit switch to be damaged and fail, thereby reducing the operating reliability of the equipment. Summary of the Invention

[0006] The purpose of the present invention is to provide a plate straightening machine warping detection device to improve the operating reliability of the equipment in order to address the shortcomings of the prior art.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] A plate straightening machine warping detection device includes a detection base, a connecting frame, a rocker arm, a steel wire rope, a fixed pulley, a spring, a slide plate and a proximity switch. The detection base and the connecting frame are respectively fixed on the upper and lower parts of the straightening machine platform. The rocker arm is located above and behind the roller guard plate on the outlet side of the straightening machine. The upper and middle parts of the rocker arm are rotatably connected to the connecting frame. The fixed pulley is installed at one end of the detection base. One end of the steel wire rope is connected to the upper end of the rocker arm, and the other end passes around the fixed pulley and is connected to the other end of the detection base in sequence through the slide plate and the spring. The proximity switch is fixed on the detection base and corresponds to the trigger boss on the slide plate.

[0009] The above-mentioned plate straightening machine warping detection device, the rocker arm includes a diagonal rod and a cross rod, the upper and middle part of the diagonal rod is rotatably connected to the connecting frame through a horizontal pin shaft perpendicular to the rolling line direction, and the upper end is connected to the wire rope, the cross rod is parallel to the rolling line direction and is located between the outlet end of the straightening machine and the diagonal rod, and the front end of the cross rod is fixedly connected to the lower end of the diagonal rod.

[0010] The above-mentioned plate straightening machine warp detection device, the diagonal rod and the cross rod are directly connected by a locking bolt, the lower end of the diagonal rod is provided with a locking screw hole, the front end of the cross rod is provided with a hinge hole, the locking bolt passes through the hinge hole on the cross rod and is screwed into the locking screw hole of the diagonal rod, and an angle adjustment bolt is provided on the connecting frame. The angle adjustment bolt is higher than the pin shaft and cooperates with the connecting frame thread, and the lower end of the angle adjustment bolt is against the diagonal rod.

[0011] The above-mentioned plate straightening machine warp detection device, the connecting frame is fixedly connected to the straightening machine platform through the base, the connecting frame includes an inner circular tube and a rocker arm bracket, the lower end of the inner circular tube is connected to the rocker arm bracket, the rocker arm bracket is provided with a pin shaft through hole matching the pin shaft and an internal threaded through hole matching the angle adjustment bolt, the base includes a rectangular plate and an outer circular tube, the rectangular plate is fixedly connected to the straightening machine platform through the bottom plate, the upper end of the outer circular tube is fixedly connected to the rectangular plate, and the lower end is slidably sleeved on the outside of the inner circular tube, and a positioning mechanism is provided between the outer circular tube and the inner circular tube.

[0012] The above-mentioned plate straightening machine warping detection device, the positioning mechanism includes a positioning bolt, internal positioning holes arranged at equal intervals in the upper end of the inner circular tube, external positioning holes arranged at equal intervals in the lower end of the outer circular tube, and a nut fixed at one end of each external positioning hole, the positioning bolt passes through an internal positioning hole and an external positioning hole and then engages with a nut thread.

[0013] The above-mentioned plate straightening machine warp detection device, the detection base includes a rectangular base plate and a detection platform, the rectangular base plate is fixed on the upper part of the straightening machine platform, a fixed pulley is installed at one end of the rectangular base plate, and the detection platform is set up at the other end, and a fixed block is provided at the end of the detection platform away from the fixed pulley, the slide plate is in sliding contact with the upper surface of the detection platform, one end of the slide plate is connected to the steel wire rope, and the other end is connected to the fixed block through a spring, the proximity switch is fixed on the upper part of the detection platform, and an insulation layer is provided between the detection platform and the rectangular base plate.

[0014] The above-mentioned plate straightening machine warping detection device has two limit plates fixed on the detection platform, which are clamped on both sides of the slide and in sliding contact with the slide. A switch bracket is provided on one of the limit plates, and a proximity switch is fixed on the switch bracket.

[0015] In the above-mentioned plate straightening machine warping detection device, one end of the angle adjustment bolt, positioning bolt and locking bolt are all provided with a handwheel.

[0016] The swing arm of the present invention drives the slide to move through a steel wire rope, a fixed pulley, and a spring, and the proximity switch is triggered by a triggering boss on the slide. In this way, the proximity switch can be kept away from areas with high temperature, dust, and water mist by increasing the length of the steel wire rope, thereby extending the service life of the proximity switch and improving the operational reliability of the equipment.

[0017] The rocker arm of this device is connected by an oblique rod and a transverse rod. The oblique rod is close to the roller guard plate, which can effectively prevent the missed detection of warping with a small curvature radius. The transverse rod extends to the rear of the roller guard plate, which not only reduces the missed detection of warping with a large curvature radius, but also prevents the slightly warped steel plate from hitting the rocker arm and causing interlocking and stopping. It effectively solves the problem of missed detection of warped steel plates after straightening. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] Figure 1 It is a schematic structural diagram of the present invention;

[0020] Figure 2 yes Figure 1 A partial enlarged view of

[0021] Figure 3 It is a structural diagram of the base plate;

[0022] Figure 4 It is a structural diagram of the base;

[0023] Figure 5 It is a structural diagram of the connecting frame;

[0024] Figure 6 It is a structural diagram of the pendulum;

[0025] Figure 7 It is a structural diagram of the diagonal rod;

[0026] Figure 8 It is a structural diagram of the crossbar;

[0027] Figure 9 It is a structural diagram of the detection base;

[0028] Figure 10 It is a schematic diagram of the structure of a skateboard;

[0029] Figure 11 It is a schematic diagram of the structure of the present invention installed in a straightening machine;

[0030] Figure 12 It is a schematic diagram of the application of the present invention;

[0031] Figure 13 The present invention relates to the structure and missed detection situation of the existing anti-warping detection device.

[0032] The numbers in the figure are: 00-straightening machine; 01-straightening roller; 02-roller guard; 03-straightening machine platform; 001-anti-collision bar; 002-rotating shaft; 003-connecting seat; 004-baffle; 005-travel switch;

[0033] 1-base plate, 1001-threaded hole, 1002-welding groove; 2-base, 21-rectangular plate, 22-external tube, 23-nut, 24-fixing bolt hole, 25-external positioning hole; 3-connecting frame, 31-inner tube, 32-rocker bracket, 33-inner positioning hole, 34-pin shaft through hole, 35-inner threaded through hole; 4-positioning bolt; 5-rocker, 51-diagonal rod, 52-cross rod, 53-rope hole, 54-locking screw hole, 55-positioning block, 56-pin hole , 57-hinge hole; 58-locking bolt; 6-pin shaft; 7-cotter pin; 8-wire rope; 9-angle adjustment bolt; 10-detection base, 101-rectangular base plate, 102-anchor bolt hole, 103-axis hole, 104-detection platform, 105-limiting plate, 106-switch bracket, 107-fixed block, 108-spring hole; 11-fixed pulley; 12-slide plate, 121-trigger boss, 122-circular through hole; 13-spring; 14-proximity switch. Implementation Method

[0034] This invention provides a novel warp detection device for plate straightening machines. This device utilizes an adjustable diagonal rod and an adjustable crossbar to form a novel detection swing arm structure along the rolling line. When a warped plate strikes the swing arm, it rotates about the centerline of the pin. A steel wire rope and a fixed pulley drive the slide along a positioning guide track between two limit plates. A proximity switch detects the signal change, triggering a warning or interlocking the machine to stop the machine, preventing the warped plate from impacting and damaging the equipment. This device offers advantages such as a simple structure, minimal environmental impact, stable and reliable operation, and a wide detection range.

[0035] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0036] like Figure 1-10 As shown, the present invention includes a base plate 1, a base 2, a connecting frame 3, a positioning bolt 4 with a handwheel, a rocker arm 5, a pin 6, a cotter pin 7, a wire rope 8, an angle adjustment bolt 9 with a handwheel, a detection base 10, a fixed pulley 11, a slide plate 12, a spring 13 and a proximity switch 14.

[0037] The bottom plate 1 is a rectangular structure as a whole, and is provided with four threaded holes 1001 and a welding groove 1002. The bottom plate 1 is fixed to the bottom surface of the straightening machine platform 03 by welding.

[0038] The base 2 is primarily composed of a rectangular plate 21, an outer tube 22, and a nut 23. Fixing bolt holes 24 are evenly distributed across the top of the rectangular plate 21. The lower end of the outer tube 22 is provided with external positioning holes 25 arranged vertically and evenly spaced. Each external positioning hole 25 is welded to a nut 23 at one end, and the external positioning holes 25 and the nut 23 are coaxial. The base 2 is secured to the base plate 1 via bolts.

[0039] Connecting frame 3 primarily consists of an inner tube 31 and a rocker bracket 32. The upper end of inner tube 31 is provided with internal positioning holes 33 arranged in a vertical arrangement at equal intervals. Rocker bracket 32 ​​is provided with a pin hole 34 and an internally threaded hole 35. The outer wall of inner tube 31 is loosely aligned with the inner wall of outer tube 22 of base 2. When any one of the internal positioning holes 33 on inner tube 31 aligns with any one of the external positioning holes 25 on outer tube 22, they can be secured with positioning bolts 4. The height of connecting frame 3 can also be adjusted by adjusting the position of the overlapping holes.

[0040] The rocker arm 5 is primarily composed of a diagonal rod 51 and a transverse rod 52, and is integrally mounted above and behind the roller guard plate 02. The diagonal rod 51 has a rope hole 53 at one end and a locking screw hole 54 at the other. A positioning block 55 and a pin hole 56 are located in the upper center portion. The pin hole 56 corresponds to the pin shaft through hole 34 of the connecting frame 3. The transverse rod 52 is an overall cylindrical structure with a hinge hole 57 at one end. The rocker arm 5 is rotatably connected to the connecting frame 3 via a pin shaft 6 and a cotter pin 7. The diagonal rod 51 is constrained in rotation by an angle adjustment bolt 9, while the transverse rod 52 is connected to the diagonal rod 51 by a locking bolt 58. The angle of the transverse rod 52 is adjustable and can be fixed and constrained by the locking bolt 58.

[0041] The inspection base 10 comprises a rectangular baseplate 101 with anchor bolt holes 102 at its four corners. A fixed pulley support with an axle hole 103 is located on the left end, and an inspection platform 104 is located on the right end. Two spaced apart limit plates 105 are located above one of these limit plates, with a slotted switch bracket 106 located above one of the limit plates. A fixing block 107 with a spring hole 108 is located at the other end of the inspection platform 104. The inspection base 100 is secured to the straightener platform 03 (with corresponding holes opened on the straightener platform 03) using bolts and nuts. The fixed pulley 11 is rotationally connected and constrained to the inspection base 10 via a horizontal axis.

[0042] The upper end of the slide 12 is provided with a rectangular trigger boss 121, and bosses and circular through holes 122 are provided on both sides. The thickness of the slide 12 is consistent with the distance between the two limit plates 105 of the detection base 10, and the slide 12 can slide along the limit plates.

[0043] One end of the steel wire rope 8 is connected to the rope hole 53 of the inclined rod 51 and fixed by a rope clamp. After the steel wire rope 8 passes around the fixed pulley, the other end is connected to a circular through hole 122 of the slide plate 12 and fixed by a rope clamp.

[0044] One end of the spring 13 is connected to another circular through hole 122 of the slide plate 12, and one end is connected to the spring hole 108 on the fixed block 107. The spring 13 is in a tensioned state so that the pendulum 5 and the slide plate 12 remain in their original state without moving under external force.

[0045] The proximity switch 14 is mounted on the switch bracket 106 and is used to detect position changes of the slide plate 12 .

[0046] The detection base 10 is located above the straightening machine platform 03. The working environment is relatively good and is not easily affected by temperature, water vapor, iron oxide powder, etc. At the same time, the space below the detection platform 104 can be used to place an insulation layer (such as thermal insulation cotton) to prevent the proximity switch 14 from being damaged by high temperature.

[0047] like Figure 11-12 As shown, when in use, first set the height of the rocker arm 5 according to the allowable warp height of the steel plate. The height of the connecting frame 3 can be adjusted by adjusting the position of the overlapping holes of the base 2 and the connecting frame 3, thereby setting the height of the rocker arm 5; the angle of the inclined rod 51 can also be adjusted by the angle adjustment bolt 9 that cooperates with the connecting frame 3, and the angle of the cross bar 52 can be adjusted by the locking bolt 58 between the inclined rod 51 and the cross bar 52 to achieve the height adjustment of the rocker arm 5.

[0048] The rocker arm 5 along the rolling line direction can effectively increase the detection range of the warp head. The position of the inclined rod 51 is as close as possible to the roller guard plate 02 to prevent the missed detection of the warp head with a small curvature radius; the inclined setting of the inclined rod 51 can prevent the warp head with a large curvature radius from bypassing the lower end of the inclined rod 51. Even if some warp heads with a large curvature radius can bypass the inclined rod 51, their continued rise will also lift the cross bar 52, thereby rotating the rocker arm 5, pulling down the wire rope 8 and driving the slide 12 to move through the fixed pulley 11. The proximity switch 14 detects the position change of the trigger boss 121 on the slide 12 and issues a warning or interlocks the car to prevent the warped steel plate from colliding and damaging the equipment.

[0049] This device uses a pendulum along the rolling line to detect warped plates after straightening, effectively expanding the detection range and preventing missed detections that could cause warped plates to collide with equipment and damage. This device offers advantages such as a simple structure, minimal environmental impact, a stable and reliable structure, a wide warp detection range, and broad applicability, effectively resolving the problem of missed detection of warped plates after straightening.

Claims

1. A plate straightening machine warping detection device, characterized in that: The invention comprises a detection base (10), a connecting frame (3), a swing arm (5), a steel wire rope (8), a fixed pulley (11), a spring (13), a slide plate (12) and a proximity switch (14), wherein the detection base (10) and the connecting frame (3) are fixed to the upper and lower parts of the straightening machine platform (03) respectively, the swing arm (5) is located above and behind the roller guard plate (02) on the outlet side of the straightening machine, the upper middle part of the swing arm (5) is rotatably connected to the connecting frame (3), the fixed pulley (11) is installed on one end of the detection base (10), one end of the steel wire rope (8) is connected to the upper end of the swing arm (5), and the other end passes around the fixed pulley (11) and is connected to the other end of the detection base (10) through the slide plate (12) and the spring (13) in sequence, and the proximity switch (14) is fixed on the detection base (10) and corresponds to the trigger boss (121) on the slide plate (12); The swing rod (5) includes an oblique rod (51) and a transverse rod (52). The upper middle portion of the oblique rod (51) is rotatably connected to the connecting frame (3) via a horizontal pin shaft (6) perpendicular to the rolling line direction, and the upper end is connected to the wire rope (8). The transverse rod (52) is parallel to the rolling line direction and is located between the outlet end of the straightening machine and the oblique rod (51). The front end of the transverse rod (52) is fixedly connected to the lower end of the oblique rod (51).

2. A plate straightening machine warping detection device according to claim 1, characterized in that: The oblique rod (51) and the cross rod (52) are directly connected by a locking bolt (58). The lower end of the oblique rod (51) is provided with a locking screw hole (54). The front end of the cross rod (52) is provided with a hinge hole (57). The locking bolt (58) passes through the hinge hole (57) on the cross rod (52) and is screwed into the locking screw hole (54) of the oblique rod (51). An angle adjustment bolt (9) is provided on the connecting frame (3). The angle adjustment bolt (9) is higher than the pin (6) and is threadedly engaged with the connecting frame (3). The lower end of the angle adjustment bolt (9) is pressed against the oblique rod (51).

3. The plate straightening machine warping detection device according to claim 2, characterized in that: The connecting frame (3) is fixedly connected to the straightening machine platform (03) through the base (2). The connecting frame (3) includes an inner circular tube (31) and a rocker bracket (32). The lower end of the inner circular tube (31) is connected to the rocker bracket (32). The rocker bracket (32) is provided with a pin shaft through hole (34) matching the pin shaft (6) and an internal threaded through hole (35) matching the angle adjustment bolt (9). The base (2) includes a rectangular plate (21) and an outer circular tube (22). The rectangular plate (21) is fixedly connected to the straightening machine platform (03) through the bottom plate (1). The upper end of the outer circular tube (22) is fixedly connected to the rectangular plate (21), and the lower end is slidably sleeved on the outside of the inner circular tube (31). A positioning mechanism is provided between the outer circular tube (22) and the inner circular tube (31).

4. A plate straightening machine warping detection device according to claim 3, characterized in that: The positioning mechanism comprises a positioning bolt (4), inner positioning holes (33) arranged at equal intervals in the upper end of the inner tube (31), outer positioning holes (25) arranged at equal intervals in the lower end of the outer tube (22), and a nut (23) fixed at one end of each outer positioning hole (25). The positioning bolt (4) passes through an inner positioning hole (33) and an outer positioning hole (25) and then engages with a nut (23) in a threaded manner.

5. The plate straightening machine warping detection device according to claim 4, characterized in that: The detection base (10) includes a rectangular substrate (101) and a detection platform (104), wherein the rectangular substrate (101) is fixed on the upper part of the straightening machine platform (03), a fixed pulley (11) is installed at one end of the rectangular substrate (101), and the detection platform (104) is set up at the other end, and a fixed block (107) is provided at the end of the detection platform (104) away from the fixed pulley (11), and the slide plate (12) is in sliding contact with the upper surface of the detection platform (104), one end of the slide plate (12) is connected to the wire rope (8), and the other end is connected to the fixed block (107) through a spring (13), and a proximity switch (14) is fixed on the upper part of the detection platform (104), and a heat insulation layer is provided between the detection platform (104) and the rectangular substrate (101).

6. A plate straightening machine warping detection device according to claim 5, characterized in that: Two limit plates (105) are fixed on the detection platform (104), the two limit plates (105) are clamped on both sides of the slide plate (12) and are in sliding contact with the slide plate (12), a switch bracket (106) is provided on one of the limit plates (105), and the proximity switch (14) is fixed on the switch bracket (106).

7. The plate straightening machine warping detection device according to claim 6, characterized in that: One end of the angle adjustment bolt (9), the positioning bolt (4) and the locking bolt (58) is provided with a hand wheel.

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