Carriage inclination detection mechanism and vertical type looper equipment having the mechanism

Abstract

To provide a carriage inclination detection mechanism which accurately detects a degree of inclination of a carriage, even though a reference in a sensor varies by a variable factor.SOLUTION: Vertical type looper equipment 1 includes a fixed stage 3, a carriage 5, a lifting mechanism 20 for lifting the carriage with respect to the fixed stage 3, and an inclination detection mechanism 40 for detecting a degree of inclination of the carriage, wherein the inclination detection mechanism includes a target 50, a detection shaft 41, horizontal extension parts 42 and 48 extending in a horizontal direction from the detection shaft, a sensor 44 for measuring a distance between the target and the sensor, a vertical extension part 43 extending in a vertical direction from the detection shaft, and a weight 45 arranged in the vertical extension part, the sensor is arranged on one side of the horizontal extension part, and the degree of inclination of the carriage is detected on the basis of a difference between a first distance D1 when the carriage is in a horizontal state and a second distance D2 when the carriage is in an inclined state.SELECTED DRAWING: Figure 9

Description

Technical Field

[0001] The present invention relates to a tilt detection mechanism for a carriage and a vertical looper facility equipped with the mechanism.

Background Art

[0002] In a vertical looper facility, when the carriage is tilted with respect to the horizontal, wrinkles and meandering occur in the metal strip or the metal strip rolls out. Therefore, it is necessary to detect the degree of tilt of the carriage and return the tilted carriage to a horizontal state.

[0003] Patent Document 1 discloses a carriage horizontal maintenance device including a measured object provided in the vertical direction, an upper displacement sensor provided on the upper part of the carriage to measure a first horizontal distance to the measured object, and a lower displacement sensor provided on the lower part of the carriage to measure a second horizontal distance to the measured object.

[0004] Patent Document 2 discloses that a plurality of pairs of left and right proximity switches are provided at equal intervals in the longitudinal direction along a guide rail, and the tilt angle of the carriage is obtained based on the time difference between the pulse signals emitted by the left and right proximity switches, the rotational speed of the winding drum, and the vertical interval between the proximity switches.

[0005] Patent Document 3 discloses that the degree of tilt of the carriage is measured by measuring the vertical distance from a fixed stage to the carriage using optical distance meters installed at the four corners of the fixed stage.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0007] In the prior art of Patent Documents 1 to 3, various sensors such as displacement sensors, proximity switches, and optical distance meters are used to measure the inclination degree of the carriage, that is, the deviation from the horizontal. However, when the reference in the sensor fluctuates due to fluctuating factors such as vibration, impact, and temperature change, there is a problem that the measurement accuracy of the sensor decreases and the inclination degree of the carriage cannot be accurately detected.

[0008] Therefore, an object of the present invention is to provide an inclination detection mechanism for a carriage and a vertical loop facility including the mechanism that can accurately detect the inclination degree of the carriage even when the reference in the sensor fluctuates due to fluctuating factors.

Means for Solving the Problems

[0009] To solve the above problems, an inclination detection mechanism for a carriage according to an aspect of the present invention includes a fixed stage on which a plurality of fixed rolls are arranged, a carriage on which a plurality of movable rolls arranged to face the plurality of fixed rolls are arranged, a lifting mechanism for lifting and lowering the carriage with respect to the fixed stage, and an inclination detection mechanism for detecting the inclination degree of the carriage, in a vertical loop facility including wherein the inclination detection mechanism includes a target arranged on the carriage, a detection shaft pivotally supported by a bearing arranged on the carriage, a horizontal extension portion extending horizontally from the detection shaft, a sensor for measuring the distance from the target, a vertical extension portion extending vertically from the detection shaft, and a weight arranged on the vertical extension portion, wherein the sensor is arranged on one side of the horizontal extension portion, The inclination degree of the carriage is detected based on the difference between the first distance when the carriage is in a horizontal state and the second distance when the carriage is in an inclined state.

Effect of the Invention

[0010] According to this invention, even if the positional relationship between the sensor and the carriage varies due to varying factors, the vertically extending portion is restored to face the vertical direction and the horizontally extending portion is restored to face the horizontal direction by the gravity acting on the weight. Therefore, the sensor disposed on the horizontally extending portion can return to the reference position. And by taking the difference between the first distance measured in the horizontal state of the carriage before the variation and the second distance measured in the inclined state of the carriage after the variation, the inclination degree of the carriage can be accurately detected.

Brief Description of the Drawings

[0011]

Figure 1

Figure 2

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Figure 12

Embodiments for Carrying Out the Invention

[0012] Hereinafter, with reference to the drawings, embodiments of the vertical loop facility 1 including the inclination detection mechanism 40 according to the present invention will be described. In the following description, terms indicating specific directions or positions (for example, terms including "up", "down", "right", "left", "front", "rear", "length direction", "width direction", "height direction", "horizontal", "vertical") are used as necessary. However, the use of these terms is for facilitating the understanding of the present disclosure with reference to the drawings, and the technical scope of the present disclosure is not limited by the meanings of these terms. In particular, the term "horizontal" should not be narrowly interpreted as only a direction completely pointing in the horizontal direction, but should be interpreted to include a direction approximating the horizontal direction. Similarly, the term "vertical" should not be narrowly interpreted as only a direction completely pointing in the vertical direction, but should be interpreted to include a direction approximating the vertical direction. Further, the following description is merely illustrative in nature and is not intended to limit the present disclosure, its applications, or its uses. Furthermore, the drawings are schematic, and the ratios of each dimension etc. do not necessarily match the actual ones.

[0013] 〔Embodiment 1〕 With reference to FIGS. 1 to 10, the vertical loop facility 1 including the inclination detection mechanism 40 according to Embodiment 1 will be described.

[0014] The vertical loop facility 1 shown in FIG. 1 is installed on each of the inlet side and the outlet side of a processing line (not shown) of the strip material 2.

[0015] As shown in FIG. 1, the vertical loop equipment 1 includes a fixed stage 3, a plurality of fixed rolls 4, a carriage 5, and a plurality of movable rolls 6. The fixed rolls 4 are rotatably supported and arranged side by side on the fixed stage 3. The movable rolls 6 are rotatably supported by a pair of roll shafts 6a and arranged side by side on the carriage 5. The strip material 2 is sequentially wound around the fixed rolls 4 and the movable rolls 6 alternately in the arrangement direction of the plurality of fixed rolls 4 and the plurality of movable rolls 6.

[0016] The strip material 2 is a strip-shaped (sheet-shaped or plate-shaped) metal strip (for example, a steel strip) and is provided in a coiled state. For example, various processing treatments such as annealing, plating, rolling, or painting are performed on the strip material 2.

[0017] The carriage 5 is located above the fixed stage 3, for example, and is configured to be movable up and down with respect to the fixed stage by a lifting mechanism 20 described later. By moving the carriage 5 up and down with respect to the fixed stage 3, the distance between the fixed roll 4 and the movable roll 6 is adjusted. Thereby, the accumulation amount of the strip material 2 in the vertical loop equipment 1 can be adjusted. For example, when replacing the strip material 2 upstream of the inlet-side vertical loop equipment 1, the replacement work is started with the accumulation amount of the strip material 2 in the inlet-side vertical loop equipment 1 increased, and during the replacement work, the strip material 2 accumulated in the inlet-side vertical loop equipment 1 is used, so that the operation can be continued without stopping the processing line. Also, when replacing the strip material 2 that has been wound up downstream of the outlet-side vertical loop equipment 1 with a new core, the replacement work is started with the accumulation amount of the strip material 2 in the outlet-side vertical loop equipment 1 reduced, and during the replacement work, the processed strip material 2 is accumulated in the outlet-side vertical loop equipment 1, so that the operation can be continued without stopping the processing line.

[0018] The fixed stage 3 and the carriage 5 have a rectangular shape in plan view. The upper surface 5a of the carriage 5 is supported at four points by suspension members 7, 8 such as chains and wire ropes described later so as to be able to take a horizontal posture.

[0019] The suspension members 7 and 8 are supported so as to be movable up and down via a lifting mechanism 20 disposed at the ceiling portion 10 of a three-dimensional frame 9 constituting the vertical loop equipment 1. The three-dimensional frame 9 has a structure in which the four corners of the ceiling portion 10 are supported by four columns 11 so as to surround the fixed stage 3 and the carriage 5, and is assembled and provided on a machine base 12 on which the fixed stage 3 is installed.

[0020] The plurality of fixed rolls 4 are arranged in the length direction A along the long side of the fixed stage 3, and the plurality of movable rolls 6 are arranged in the length direction A along the long side of the carriage 5.

[0021] The lifting mechanism 20 of the carriage 5 when the suspension members 7 and 8 are chains will be briefly described with reference to FIGS. 1 to 4.

[0022] The lifting mechanism 20 includes a drive motor 13, a rotary shaft system 14, a gearbox 15, a bearing member 16, and a set of first sprockets 17 and second sprockets 18.

[0023] The drive motor 13 is provided at the central position of the ceiling portion 10. The gearbox 15 is provided at the ceiling portion 10 and connected to the drive motor 13, and decelerates and transmits the rotational driving force of the drive motor 13 to a rotary shaft system 14 that is serially connected via a coupling 19 in the length direction A of the carriage 5. The bearing member 16 supports both ends of the rotary shaft system 14. The first sprockets 17 and the second sprockets 18 are provided at the ceiling portion 10, near the bearing member 16, and are connected to both ends of the rotary shaft system 14 in an adjacent arrangement to each other, and are rotationally driven in the same direction at a constant speed by the rotary shaft system 14, thereby driving the first chain 7 and the second chain 8 wound around each of them at a constant speed.

[0024] On the upper surface 5a of the carriage 5, on one side in the width direction B, the other ends of two first chains 7 are connected at intervals in the length direction A, and on the other side in the width direction B, the other ends of two second chains 8 are connected at intervals in the length direction A. As a result, the carriage 5 is supported at four locations by four chains 7 and 8. It is desirable that the suspension support locations be four corner portions of a rectangular shape with the width direction B of the carriage 5 as the short side direction. When the suspension members 7 and 8 are wire ropes, pulleys are used instead of the sprockets 17 and 18.

[0025] For example, when the drive motor 13 is driven to rotate forward, a set of the first sprocket 17 and the second sprocket 18 are driven to rotate forward in the same direction, and the first chain 7 and the second chain 8 move the carriage 5 downward in the height direction C. On the other hand, when the drive motor 13 is driven to rotate reversely, the first sprocket 17 and the second sprocket 18 are driven to rotate reversely in the same direction, and the first chain 7 and the second chain 8 move the carriage 5 upward in the height direction C.

[0026] The lifting mechanism of the carriage 5 when the suspension members 7 and 8 are chains will be briefly described with reference to FIGS. 2 to 4.

[0027] The lifting mechanism of the carriage 5 includes a drive motor 13 provided at the central position of the ceiling portion 10, a gearbox 15 provided on the ceiling portion 10 and connected to the drive motor 13, which decelerates and transmits the rotational driving force of the drive motor 13 to a rotating shaft system 14 that is serially connected via a coupling 19 in the length direction A of the carriage 5, a pair of first sprockets 17 and second sprockets 18 of the same size provided near each bearing member 16 that is provided on the ceiling portion 10 and supports both ends of the rotating shaft system 14, and are connected to both ends of the rotating shaft system 14 in an adjacent arrangement, and are rotationally driven in the same direction at a constant speed by the rotating shaft system 14, thereby driving the first chain 7 and the second chain 8 wound around each of them at a constant speed, two third sprockets 27 provided on the ceiling portion 10 opposite to each of the first sprockets 17 respectively, and rotatably supported via bearing members 26 to guide the first chain 7 wound from the first sprocket 17, and a suspension weight W to which one end of each of the first chain 7 and the second chain 8 is connected on both sides in the length direction of the carriage 5.

[0028] The suspension weight W reduces the required power for the lifting operation of the carriage 5 and prevents the suspension members 7, 8 from floating.

[0029] On one side in the width direction B of the carriage 5, the other ends of two first chains 7 are connected at intervals in the length direction A, and on the other side in the width direction B, the other ends of two second chains 8 are connected at intervals in the length direction A. Thus, the carriage 5 is supported at four points by four suspension members 7, 8.

[0030] The four points serving as suspension points are preferably at positions where the deflection of the carriage 5 in the length direction A is small in a rectangular shape with the length direction A of the carriage 5 as the long side direction and the width direction B as the short side direction.

[0031] When the suspension members 7, 8 are wire ropes, pulleys are used instead of the sprockets 17, 18, 27.

[0032] For example, when the drive motor 13 is driven to rotate forward, a set of first sprocket 17 and second sprocket 18 are driven to rotate forward in the same direction, and each third sprocket 27 is also rotated forward in the same direction via the first chain 7. The first chain 7 and the second chain 8 lower the carriage 5 at one end while pulling up the plumb bob W at the other end. On the other hand, when the drive motor 13 is driven to rotate reversely, the first sprocket 17, the second sprocket 18, and the third sprocket 27 are all driven to rotate reversely in the same direction, and the first chain 7 and the second chain 8 lift and raise the carriage 5 at one end while lowering the plumb bob W at the other end.

[0033] Instead of such a mechanism, a winch (not shown) may be used to wind up and unwind lifting materials 7, 8 such as wires instead of chains.

[0034] In the vertical loop equipment 1, a plurality of movable rolls 6 are arranged in the length direction A of the carriage 5, and the carriage 5 may be inclined in the width direction B, which may cause the strip material 2 to meander. In order to prevent the meandering of the strip material 2, it is necessary to detect how much the carriage 5 is inclined in the width direction B, and when the carriage 5 is inclined, it is necessary to return the carriage 5 to a horizontal posture.

[0035] As shown in FIG. 5, the vertical loop equipment 1 includes an inclination detection mechanism 40 for detecting the degree of inclination of the carriage 5 in the width direction B, and a correction mechanism 22 for correcting the degree of inclination of the carriage 5.

[0036] As shown in FIGS. 5 to 8, the inclination detection mechanism 40 is disposed integrally with the carriage 5 on the side surface portion on the lower surface 5b side of the carriage 5 via the bracket 37. The inclination detection mechanism 40 includes a bearing 38, a detection shaft 41, horizontal extending portions 42, 48, a sensor 44, a vertically extending portion 43, a weight 45, and a target 50. The bearing 38 and the target 50 are disposed on the bracket 37. Since the bracket 37 is integrally attached to the carriage 5, it is equivalent to the bearing 38 and the target 50 being disposed on the carriage 5.

[0037] The detection shaft 41 is pivotally supported by the bearing 38. The horizontal extending portions 42, 48 extend horizontally from the detection shaft 41 and include a first arm 42 and a third arm 48 made of a rigid member. A sensor 44 is disposed at one end of the first arm 42. The sensor 44 measures the distance from the target 50 disposed opposite to the sensor 44.

[0038] The sensor 44 is, for example, a non-contact displacement sensor. The target 50 is disposed opposite to the sensor 44 so that a detection medium (for example, light or ultrasonic wave) emitted from the non-contact displacement sensor can irradiate the target 50 and the detection medium reflected by the target 50 can be detected by the non-contact displacement sensor. Thereby, since neither the sensor 44 nor the target 50 is damaged, long-term use becomes possible.

[0039] As an example of the non-contact displacement sensor, it is a laser displacement sensor 44. And the target 50 is, for example, a plate-like body having light reflectivity like a mirror surface. Thereby, highly accurate measurement and measurement hardly affected by temperature become possible.

[0040] The laser displacement sensor 44 measures the distance from the target 50 based on, for example, that laser light irradiates the target 50, the reflected light from the target 50 is received by a light receiving element, and the imaging position on the light receiving element is different if the position of the target 50 (distance from the sensor 44) changes.

[0041] The vertically extending portion 43 extends vertically from the detection axis 41 and is constituted by a second arm 43 made of a rigid member. A weight 45 is disposed at the vertical tip of the second arm 43. The weight 45 has a sufficient weight (for example, 5 kg) with respect to the first arm 42 and the third arm 48. Even if the positional relationship between the sensor 44 and the carriage 5 varies due to fluctuating factors such as vibration, shock, and temperature change, the second arm 43 is restored to face the vertical direction by the gravity acting on the weight 45, and the first arm 42 and the third arm 48 are restored to face the horizontal direction. Thereby, the sensor 44 disposed on the first arm 42 can return to the reference position.

[0042] As shown in FIGS. 9 and 10, before and after variation due to a fluctuating factor, the first arm 42 faces the horizontal direction, and the sensor 44 disposed on the first arm 42 facing the horizontal direction is located at the reference position. The sensor 44 at the reference position both before and after variation due to a fluctuating factor measures the first distance D1 when the carriage 5 is in a horizontal state and measures the second distance D2 when the carriage 5 is in an inclined state. In other words, the first distance D1 is the separation distance between the sensor 44 at the horizontal reference position and the target 50 disposed on the carriage 5 in the horizontal state before variation due to a fluctuating factor. Also, the second distance D2 is the separation distance between the sensor 44 that has returned to the horizontal reference position and the target 50 disposed on the inclined carriage 5 after variation due to a fluctuating factor. Therefore, based on the difference between the first distance D1 when the carriage 5 is in a horizontal state and the second distance D2 when the carriage 5 is in an inclined state (that is, the displacement amount of the carriage 5 with respect to the sensor 44), the inclination degree of the carriage 5 is detected by the inclination detection mechanism 40.

[0043] As shown in FIG. 5, based on the inclination degree of the carriage 5 detected by the inclination detection mechanism 40, a correction mechanism 22 that adjusts the suspension lengths of the suspension members 7 and 8 to correct the inclination degree of the carriage 5 is mounted on the carriage 5.

[0044] As the correction mechanism 22, a threaded rod 24 with a male thread connected to the first chain 7 that suspends the carriage 5, and a screw feed mechanism 23 that engages with the threaded rod 24 to cause the threaded rod 24 to protrude and retract are exemplified. The correction mechanism 22 is provided, for example, between the end of the first chain 7 and the carriage 5. The screw feed mechanism 23 is driven by a drive motor 25. The correction mechanism 22 is not limited to a screw jack, and any means may be used as long as the suspension length in the height direction C is adjustable.

[0045] The screw jack acting as the correction mechanism 22 can change the suspension length by using the screw feed mechanism 23 to cause the threaded rod 24 to protrude and retract along the height direction C. The screw feed mechanism 23 is attached to the carriage 5, and the threaded rod 24 is connected to the first chain 7.

[0046] When the suspension state of the carriage 5 is constant by the first chain 7 and the second chain 8, as the protruding length L of the portion of the threaded rod 24 that protrudes above the screw feed mechanism 23 increases, the suspension length becomes longer, so the suspension position of the carriage 5 becomes lower. Conversely, when the protruding length L of the threaded rod 24 becomes shorter, the suspension length becomes shorter, so the suspension position of the carriage 5 becomes higher. Thereby, by using the screw feed mechanism 23 to adjust the protruding length L of the threaded rod 24, the inclined carriage 5 can be controlled to a horizontal state.

[0047] The vertical loop facility 1 can also be provided with a controller (not shown) for measuring the first distance D1 and the second distance D2, calculating the difference between the two (i.e., the displacement amount of the carriage 5 with respect to the sensor 44), and performing correction control of the inclination degree of the carriage 5 by the correction mechanism 22.

[0048] Therefore, even if the positional relationship between the sensor 44 and the carriage 5 varies due to a varying factor, the vertical extending portion 43 faces the vertical direction and the horizontal extending portions 42 and 48 face the horizontal direction by the gravity acting on the weight 45, so that the sensor 44 disposed on the horizontal extending portion 42 can return to the reference position. Then, by taking the difference between the first distance D1 measured in the horizontal state of the carriage 5 before the variation and the second distance D2 measured in the inclined state of the carriage 5 after the variation, the degree of inclination of the carriage 5 can be accurately detected.

[0049] 〔Embodiment 2〕 The inclination detection mechanism 40 according to Embodiment 2 will be described with reference to FIGS. 11 and 12.

[0050] The inclination detection mechanism 40 according to Embodiment 2 is characterized in that a sensor 49 is further provided on the other side of the horizontal extending portion 48, and the other configuration is the same as that of the above-described Embodiment 1.

[0051] As shown in FIGS. 11 and 12, a sensor 49 is disposed at the other end of the third arm 48 acting as a horizontal extending portion. The sensor 49 measures the distance to a target 50 disposed to face the sensor 49. The sensor 49 is, like the sensor 44, for example, a non-contact displacement sensor, but may be a sensor having a measurement method different from that of the sensor 44. Thus, the inclination detection mechanism 40 according to Embodiment 2 has the sensors 44 and 49 at the respective ends of the first arm 42 and the third arm 48 acting as horizontal extending portions.

[0052] As shown in Fig. 11, when the carriage 5 is in a horizontal state, the sensor 44 measures the first distance D1 in the same manner as in the first embodiment, and the sensor 49 measures the third distance D3 when the carriage 5 is in a horizontal state. As shown in Fig. 12, when the carriage 5 is in an inclined state, the sensor 44 measures the second distance D2 in the same manner as in the first embodiment, and the sensor 49 measures the fourth distance D4 when the carriage 5 is in an inclined state. Based on the difference between the first distance D1 and the second distance D2 measured by the sensor 44 (i.e., the displacement amount of the carriage 5 with respect to the sensor 44), and the difference between the third distance D3 and the fourth distance D4 measured by the sensor 49 (i.e., the displacement amount of the carriage 5 with respect to the sensor 49), the degree of inclination of the carriage 5 is detected. Thereby, the degree of inclination of the carriage 5 can be detected more accurately, and the reliability is improved by having redundancy.

[0053] Although specific embodiments of the present invention have been described, the present invention is not limited to the above embodiments, and various modifications can be made and implemented within the scope of the present invention.

[0054] As shown in Figs. 9 to 12, the weight 45 may be supported by the vibration suppression device 53. Thereby, detection errors caused by the weight 45 swinging due to small vibrations or large amplitudes generated during the operation of the vertical loop equipment 1 can be suppressed, and the detection time of the degree of inclination of the carriage 5 can be shortened. The vibration suppression device 53 is composed of a damper 46 connected to the weight 45 and a connecting portion 47 connecting the damper 46 to the weight 45 and the carriage 5. Thereby, the vibration suppression device 53 can be simply configured.

[0055] As a non-contact displacement sensor, the sensor 44 can also use an ultrasonic displacement sensor. The ultrasonic displacement sensor transmits ultrasonic waves toward the target 50 by a transmitter, receives the reflected wave by a receiver, and measures the distance by calculating the relationship between the time required from the transmission to the reception of the ultrasonic waves and the speed of sound. Thereby, it is possible to perform long-term measurement without damaging either the sensor 44 or the target 50. Further, as a contact displacement sensor, the sensor 44 can also use a contact digital displacement sensor. The contact digital displacement sensor measures the position by directly contacting the target 50 with a probe. Thereby, highly accurate measurement is possible even in a harsh environment where moisture, dust, or dirt exists.

[0056] In the above embodiment, the aspect in which a T shape is formed in a side view by the first arm 42, the third arm 48, and the second arm 43 is illustrated. However, an aspect in which an inverted L shape is formed in a side view by only the first arm 42 and the second arm 43 may also be possible.

[0057] In the above embodiment, the vertically extending portion 43 is illustrated as being composed of a member having rigidity. However, the vertically extending portion 43 may be composed of a flexible member such as a wire or a rope.

[0058] The detection of the inclination degree of the carriage 5 by the inclination detection mechanism 40 does not need to be performed constantly. For example, it may be detected once every 10 seconds, and the moving average of the detected values can be taken as the current inclination degree.

[0059] In the above embodiment, the target 50 is disposed separately from the carriage 5, but the upper surface 5a or the lower surface 5b of the carriage 5 can also be used as the target 50.

[0060] Summarizing this invention and the embodiments, it is as follows.

[0061] The inclination detection mechanism 40 of the carriage 5 according to one aspect of this invention is A fixed stage 3 provided with a plurality of fixed rolls 4, A carriage 5 provided with a plurality of movable rolls 6 arranged to face the plurality of fixed rolls 4, A lifting mechanism 20 for lifting the carriage 5 with respect to the fixed stage 3, In a vertical looper facility 1 including an inclination detection mechanism 40 for detecting the degree of inclination of the carriage 5, The inclination detection mechanism 40 includes, A target 50 disposed on the carriage 5, A detection shaft 41 pivotally supported by a bearing 38 disposed on the carriage 5, Horizontal extending portions 42, 48 extending horizontally from the detection shaft 41, A sensor 44 for measuring the distance to the target 50, A vertical extending portion 43 extending vertically from the detection shaft 41, A weight 45 disposed on the vertical extending portion 43, and is characterized in that, The sensor 44 is disposed on one side of the horizontal extending portion 42, Based on the difference between a first distance D1 when the carriage 5 is in a horizontal state and a second distance D2 when the carriage 5 is in an inclined state, the degree of inclination of the carriage 5 is detected.

[0062] According to the above aspect, even if the positional relationship between the sensor 44 and the carriage 5 varies due to a factor of variation, the vertical extending portion 43 is restored to face the vertical direction by the gravity acting on the weight 45 and the horizontal extending portions 42, 48 are restored to face the horizontal direction. Therefore, the sensor 44 disposed on the horizontal extending portion 42 can return to the reference position. Then, by taking the difference between the first distance D1 measured in the horizontal state of the carriage 5 before the variation and the second distance D2 measured in the inclined state of the carriage 5 after the variation, the degree of inclination of the carriage 5 can be accurately detected.

[0063] Further, in the inclination detection mechanism 40 of one embodiment, on the other side of the horizontal extending portion 48, the sensor 49 is further provided.

[0064] According to the above-described embodiment, the inclination degree of the carriage 5 can be detected more accurately, and the reliability is improved by having redundancy.

[0065] In addition, in the inclination detection mechanism 40 of one embodiment, the sensors 44 and 49 are non-contact displacement sensors.

[0066] According to the above-described embodiment, since neither the sensor 44 nor the target 50 is damaged, it is possible to use them for a long period of time.

[0067] In addition, in the inclination detection mechanism 40 of one embodiment, the non-contact displacement sensor is a laser displacement sensor 44.

[0068] According to the above-described embodiment, it is possible to perform highly accurate measurement and measurement that is less affected by temperature.

[0069] In addition, in the inclination detection mechanism 40 of one embodiment, the weight 45 is supported by a vibration suppression device 53.

[0070] According to the above-described embodiment, it is possible to suppress detection errors caused by the weight 45 swinging due to small vibrations or large amplitudes generated during the operation of the vertical loop facility 1, and to shorten the detection time of the inclination degree of the carriage 5.

[0071] In addition, in the inclination detection mechanism 40 of one embodiment, the vibration suppression device 53 includes a damper 46 connected to the weight 45 and a connection portion 47 connecting the damper 46 to the weight 45 and the carriage 5.

[0072] According to the above-described embodiment, the vibration suppression device 53 can be simply configured.

[0073] The vertical loop facility 1 according to another aspect includes the above-described inclination detection mechanism 40 and a correction mechanism 22 that corrects the carriage 5 to a horizontal state based on the inclination degree of the carriage 5 detected by the inclination detection mechanism 40.

[0074] According to the above aspect, based on the degree of inclination of the carriage 5 detected by the inclination detection mechanism 40, the carriage 5 can be corrected to a horizontal state using the correction mechanism 22.

[0075] Further, in the vertical loop facility 1 of one embodiment, the correction mechanism 22 includes a threaded rod 24 connected to a suspension member 7 that suspends the carriage 5, and a screw feed mechanism 23 that engages with the threaded rod 24 to make the threaded rod 24 protrude and retract, and the screw feed mechanism 23 adjusts the protruding length L of the threaded rod 24.

[0076] According to the above embodiment, by using the screw feed mechanism 23 to adjust the protruding length L of the threaded rod 24, the inclined carriage 5 can be controlled to a horizontal state.

Explanation of Reference Numerals

[0077] 1... Vertical loop facility 2... Strip material 3... Fixed stage 4... Fixed roll 5... Carriage 5a... Upper surface 5b... Lower surface 6... Movable roll 6a... Roll shaft 7... First chain (suspension member) 8... Second chain (suspension member) 9... Three-dimensional frame 10... Ceiling part 11... Support column 12... Machine base 13... Drive motor 14... Rotating shaft system 15... Gearbox 16... Bearing member 17... First sprocket 18... Second sprocket 19... Coupling 20... Lifting mechanism 22... Correction mechanism 23... Screw feed mechanism 24... Threaded rod 25... Driving motor 26... Bearing member 27... Third sprocket 37... Bracket 38... Bearing 40... Tilt detection mechanism 41... Detection shaft 42... First arm (horizontally extending portion) 43... Second arm (vertically extending portion) 44... Laser displacement sensor (sensor) 45... Weight 46... Damper 47... Connection part 48... Third arm (horizontally extending portion) 49... Sensor 50... Reflector (target) 53... Vibration suppression device A... Longitudinal direction B... Width direction C... Height direction D1... First distance D2... Second distance D3... Third distance D4... Fourth distance L... Projection length W... Plumb bob

Claims

1. A fixed stage provided with a plurality of fixed rolls, A carriage provided with a plurality of movable rolls arranged opposite to the plurality of fixed rolls, A lifting mechanism for lifting and lowering the carriage with respect to the fixed stage, In a vertical loop equipment comprising an inclination detection mechanism for detecting the inclination degree of the carriage, The inclination detection mechanism, A target disposed on the carriage, A detection shaft pivotally supported by a bearing disposed on the carriage, A horizontal extension portion extending horizontally from the detection shaft, A sensor for measuring the distance from the target, A vertical extension portion extending vertically from the detection shaft, A weight disposed on the vertical extension portion, and comprising, The sensor is disposed on one side of the horizontal extension portion, Based on the difference between the first distance when the carriage is in a horizontal state and the second distance when the carriage is in an inclined state, the inclination degree of the carriage is detected. The inclination detection mechanism of the carriage in the vertical loop equipment.

2. The inclination detection mechanism further comprises the sensor on the other side of the horizontal extension portion. The inclination detection mechanism according to claim 1.

3. The sensor is a non-contact displacement sensor. The inclination detection mechanism according to claim 2.

4. The non-contact displacement sensor is a laser displacement sensor. The inclination detection mechanism according to claim 3.

5. The weight is supported by a vibration suppression device. The inclination detection mechanism of the carriage according to claim 1.

6. The shake suppression device includes a damper connected to the weight and a connecting portion that connects the damper to the weight and the carriage, and is the tilt detection mechanism of the carriage according to claim 5.

7. The tilt detection mechanism according to any one of claims 1 to 6, and a correction mechanism that corrects the carriage to a horizontal state based on the degree of tilt of the carriage detected by the tilt detection mechanism, and is a vertical loop facility.

8. The correction mechanism has a threaded rod connected to a suspension member that suspends the carriage and a screw feed mechanism that engages with the threaded rod to move the threaded rod in and out, and adjusts the protruding length of the threaded rod by the screw feed mechanism, and is the vertical loop facility according to claim 7.

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