JP5623201B2 - Guide position control device in rolling mill - Google Patents

Description

  The present invention relates to a position control device capable of accurately controlling the position of a guide in a rolling mill.

  Controlling the guide position of the rolled material with high accuracy is a technique basically required in the field of rolling mills. For example, in order to manufacture a rolled product with high dimensional accuracy, it is indispensable to roll a rolled material that has been rolled by the preceding rolling roll caliber with accurate alignment with the subsequent rolling roll caliber.

  The present applicant has already proposed a guide position control device for accurately aligning a rolled material with a rolled roll caliber (Patent Document 1). In this guide position control device described in Patent Document 1, the shift base having the guide attached is meshed with the screw shaft so that the shift base can be moved in the axial direction of the screw shaft. Connected to the drive means by the hydraulic motor through the speed reducer, and the drive base is remotely controlled by the hydraulic pressure and electrical position control means, so that the shift base is moved according to the rotation direction and rotation amount of the screw shaft Has been. By using such a position control device, the guide fixed to the shift base can be accurately positioned at the position of the rolling roll caliber.

JP-A-11-108144

  However, since the position control device described in Patent Document 1 requires precision positioning parts such as a ball speed reducer and a positioning and fixing member, the structure becomes very complicated, and as a result, the manufacturing cost becomes considerably high. It had the problem that. In addition, because it requires hydraulic and electrical position control means using a sequencer, etc., control means and drive means such as servo motors, and because it requires equipment installation work costs and wiring and piping work costs in the factory, There was a problem that the manufacturing cost was high. Furthermore, since the external dimensions are large, it is also a problem to be solved that the external dimensions cannot be arranged in a narrow space.

  Accordingly, an object of the present invention is to provide a guide position control device in a rolling mill that has a simple structure and can reduce manufacturing costs.

  Another object of the present invention is to provide a guide position control device in a rolling mill that does not require hydraulic and electrical position control means and can further reduce the manufacturing cost.

  Still another object of the present invention is to provide a position control device for a guide in a rolling mill that can further reduce the overall dimensions.

  According to the present invention, a guide moving mechanism capable of moving the guide of the rolling material in the axial direction of the rolling roll, and a fixed size for performing a unit feeding operation that is connected to the guide moving mechanism and moves the guide by a unit displacement amount. A feed mechanism, and a unit feed operation by the fixed-size feed mechanism can be performed as many times as necessary.

  The guide moves in the axial direction of the rolling roll by the guide moving mechanism. By the operations of the fixed-size feed mechanism and the guide moving mechanism, the guide displacement amount in the unit feed operation is defined as a predetermined value. Accordingly, the guide is positioned with high accuracy at a desired position in the axial direction of the rolling roll by performing the unit feeding operation by the fixed-sizing feeding mechanism a required number of times. Since precision positioning parts such as a ball speed reducer and a positioning fixing member are not required, the structure becomes very simple and the manufacturing cost can be reduced. In addition, since positioning is performed by performing the unit feed operation by the fixed length feed mechanism as many times as necessary, position control means, control panel, servo motor, etc. are unnecessary, and equipment installation work, wiring and piping work are not required. Therefore, the manufacturing cost can be reduced also in that sense. Furthermore, the outer dimensions can be greatly reduced.

  The fixed-size feed mechanism includes a displacement mechanism that can be displaced by a unit displacement amount, and a fitting mechanism that can mechanically fit and remove the displacement mechanism and the guide moving mechanism. With the displacement mechanism and the guide moving mechanism fitted with each other, the displacement mechanism is displaced by the unit displacement amount to displace the guide by the unit displacement amount, and the fitting mechanism is detached from the guide movement mechanism. It is preferable to be configured to initialize the displacement of the displacement mechanism in the state.

  In this case, the displacement mechanism is inserted into a feed frame member that defines a fixed-size feed frame corresponding to a unit displacement amount, and a fixed-size feed frame of the feed frame member, and is movable within the fixed-size feed frame. More preferably, a member and an elastic member capable of initializing the movable member at the origin position are provided, and the unit displacement amount is set by displacing the movable member from the origin position within the fixed-size feed frame.

  A hydraulic drive source provided separately from the displacement mechanism and connected to the guide moving mechanism is further provided. The fitting / removing mechanism includes a first fitting surface mechanically connected to the displacement mechanism, and a hydraulic drive. And a second fitting surface opposite to the first fitting surface, the first fitting surface and the second fitting surface are fitted to each other. It is also preferable to be configured to be removable.

  It is also preferable that the fixed dimension feed mechanism is a constant angle feed mechanism that defines an angle amount in the unit feed operation.

  A hydraulic drive source and a spur gear that constitute a part of the displacement mechanism are further provided, and the fitting / removing mechanism includes a spur gear and a gear mechanically connected to the guide moving mechanism. It is also more preferable that it is configured to be able to be fitted / removed by meshing or detaching.

  It is also preferable that the constant-size feed mechanism is a constant-length feed mechanism that defines a length amount in the unit feed operation.

  It is also preferable that the fixed dimension feeding mechanism is configured to be able to define the amount of displacement of the guide in any of two directions opposite to each other.

  It is also preferable to further include a position detection mechanism capable of detecting the amount of displacement of the guide in the axial direction.

  Further, according to the present invention, the guide position control device in the rolling mill includes a guide for guiding the rolling material to the rolling roll caliber, a slider block on which the guide is detachably mounted, and the slider block on the rolling roll. And a saddle mounted so as to be movable in the axial direction. The saddle includes a guide moving mechanism, a fixed-size feed mechanism coupled to the guide moving mechanism, a position detecting mechanism capable of detecting a displacement amount of the guide in the axial direction, and a guide clamp mechanism for fixing the guide. Yes. The guide moving mechanism includes a slide shaft that meshes with the slider block to move the slider block in the axial direction. The fixed-size feed mechanism includes a displacement mechanism that can be displaced by a unit displacement amount, and a fitting mechanism that can mechanically fit and remove the displacement mechanism and the guide moving mechanism. With the displacement mechanism and the guide moving mechanism fitted together by displacing the displacement mechanism by the unit displacement amount, the guide is displaced by a displacement amount corresponding to the unit displacement amount, and the displacement mechanism is guided by the fitting / removing mechanism. By initializing the displacement of the displacement mechanism in a state of being detached from the guide, the displacement amount of the guide in the unit feed operation is defined to a predetermined value. The position detection mechanism is configured to detect the amount of displacement of the guide by detecting the rotation angle of the slide shaft. The guide clamp mechanism is configured to be able to be fixed so that the guide cannot be moved in the axial direction when the displacement of the guide in the axial direction is completed. The unit feed operation by the fixed length feed mechanism can be performed as many times as necessary.

  The guide moves in the axial direction of the rolling roll by the guide moving mechanism. By the operations of the fixed-size feed mechanism and the guide moving mechanism, the guide displacement amount in the unit feed operation is defined as a predetermined value. Accordingly, the guide is positioned with high accuracy at a desired position in the axial direction of the rolling roll by performing the unit feeding operation by the fixed-sizing feeding mechanism a required number of times. Since precision positioning parts such as a ball speed reducer and a positioning fixing member are not required, the structure becomes very simple and the manufacturing cost can be reduced. In addition, since positioning is performed by performing the unit feed operation by the fixed length feed mechanism as many times as necessary, position control means, control panel, servo motor, etc. are unnecessary, and equipment installation work, wiring and piping work are not required. Therefore, the manufacturing cost can be reduced also in that sense. Furthermore, the outer dimensions can be greatly reduced.

  The displacement mechanism includes a feed frame member that defines a constant angle feed frame having a unit displacement angle corresponding to a unit displacement amount, and a fixed frame inserted in the constant angle feed frame of the feed frame member so as to be rotatable coaxially with the constant angle feed frame. A movable member that has an angular feed lever and is rotatable relative to the feed frame member within an angular range in which the constant angle feed lever moves; and an elastic member that can be initialized to the origin position. It is preferable that the unit displacement amount is set by the angular displacement of the constant angle feed lever from the origin position within the constant angle feed frame.

  In this case, it further includes a hydraulic drive source provided separately from the displacement mechanism and coupled to the guide moving mechanism, and the fitting / removing mechanism includes a first fitting surface mechanically coupled to the displacement mechanism, And a second fitting surface that is mechanically connected to the hydraulic drive source and the guide moving mechanism and faces the first fitting surface, and includes a first fitting surface and a second fitting surface. More preferably, the surface is configured to be detachable.

  The displacement mechanism includes a feed frame member that defines a constant-length feed frame having a unit displacement length corresponding to a unit displacement amount, a movable member that is linearly movable by a constant-length feed piston within the constant-length feed frame of the feed frame member, It is also preferable that the movable member is provided with an elastic member that can be initialized to the origin position, and that the unit displacement amount is set by causing the fixed-length feed piston to linearly displace the movable member within the fixed-size feed frame.

  A hydraulic drive source and a spur gear that constitute a part of the displacement mechanism are further provided, and the fitting / removing mechanism includes a spur gear and a gear mechanically connected to the guide moving mechanism. It is also more preferable that it is configured to be able to be fitted / removed by meshing or detaching.

  It is also preferable that the fixed dimension feeding mechanism is configured to be able to define the amount of displacement of the guide in any of two directions opposite to each other.

  According to the present invention, since a precision positioning component such as a ball speed reducer or a positioning and fixing member is not required, the structure becomes very simple and the manufacturing cost can be reduced. In addition, since positioning is performed by performing the unit feed operation by the fixed length feed mechanism as many times as necessary, position control means, control panel, servo motor, etc. are unnecessary, and equipment installation work, wiring and piping work are not required. Therefore, the manufacturing cost can be reduced also in that sense. Furthermore, the outer dimensions can be greatly reduced.

It is a perspective view which shows roughly the principal part structure of one Embodiment of the position control apparatus of the guide in the rolling mill of this invention. It is a side view which shows the mechanical structure of the position control apparatus of FIG. It is a top view which shows the mechanical structure of the position control apparatus of FIG. It is an arrow line view which shows the surface along the IV-IV line of FIG. It is an arrow line view which shows the surface along the VV line | wire of FIG. It is a top view which shows the principal part structure of the fitting / removing mechanism in the position control apparatus of FIG. It is an arrow line view which shows the surface along the VII-VII line of FIG. It is a figure which shows schematically the structure of the hydraulic circuit of the position control apparatus of FIG. 2 is a flowchart for schematically explaining the operation of the position control device of FIG. 1. It is a side view which shows the one part mechanical structure of other embodiment of the position control apparatus of the guide in the rolling mill of this invention. It is a side view which shows the mechanical structure when the fitting / removing mechanism of the position control apparatus of FIG. It is an arrow line view which shows the surface along the XII-XII line | wire of FIG. It is a side view which shows a part mechanical structure when the fitting / removal mechanism of the position control apparatus of FIG. It is a side view which shows a part mechanical structure when the fitting / removing mechanism of the position control apparatus of FIG. 10 is in a fitting state, and a fixed-size feeding mechanism is in a unit displacement amount feeding state. It is a side view which shows a part mechanical structure when the fitting / removal mechanism of the position control apparatus of FIG. 11 is a flowchart for schematically explaining the operation of the position control device of FIG. 10.

  FIG. 1 schematically shows the main configuration of an embodiment of a guide position control device in a rolling mill of the present invention, and FIGS. 2 and 3 show the mechanical configuration of the position control device of FIG. 4 shows a surface along the line IV-IV in FIG. 3, FIG. 5 shows a surface along the line V-V in FIG. 3, and FIG. 6 shows the fitting in the position control device in FIG. FIG. 7 shows a surface along the line VII-VII in FIG. 6.

  In these drawings, 10 is a slider block that can move linearly in the direction of arrow 11 in FIG. 1, 12 is a slide shaft that meshes with the slider block 10, and 13 is a slide shaft gear that is coaxially fixed to the slide shaft 12. Show.

  A guide 14 (FIG. 2) having an entry guide 14 a and a guide roller 14 b is detachably mounted on the slider block 10. This guide 14 is for guiding the rolling material which is not shown in figure to the desired position (position of a rolling roll caliber) of the rolling roll 15 (FIG. 2). The slider block 10 has a through hole in which an internal thread is formed on the inner periphery, and the external thread formed on the outer periphery of the slide shaft 12 meshes with the internal thread. Accordingly, when the slide shaft 12 rotates in one direction or in the opposite direction, the slider block 10 linearly moves in the direction of the arrow 11, that is, in the axial direction of the rolling roll 15.

  The guide 14 is detachably attached to the slider block 10 via a guide base 16. Therefore, the slider block 10, the guide base 16, and the guide 14 can move linearly in the axial direction of the rolling roll 15.

  A rotation shaft (not shown) of the hydraulic motor 17 is arranged in parallel with the slide shaft 12, and a motor gear 18 meshed with the slide shaft gear 13 is coaxially fixed to the rotation shaft. Therefore, when the hydraulic motor 17 rotates, the slide shaft 12 rotates and the slider block 10 moves linearly in the axial direction of the rolling roll 15. A fixed dimension feed mechanism (constant angle feed mechanism) 19 described later is attached to the hydraulic motor 17.

  A rotary shaft (not shown) of the encoder 20 constituting the position detection mechanism is arranged in parallel with the rotary shaft of the hydraulic motor 17, and the encoder gear 21 meshed with the motor gear 18 is coaxial with the rotary shaft of the encoder 20. It is fixed. Therefore, the encoder 20 can detect the rotation angle of the hydraulic motor 17 or the rotation angle of the slide shaft 12, thereby detecting the actual displacement amount of the guide 14. The detected rotation angle or displacement is displayed on a display device (not shown).

  The slide shaft 12 and the slide shaft gear 13 meshed with the slider block 10 constitute a guide moving mechanism, and the hydraulic motor 17 and the motor gear 18 constitute a hydraulic drive source. The guide moving mechanism, the hydraulic drive source, the constant angle feeding mechanism 19, the encoder 20 and the encoder gear 21 are attached to the saddle 22, and are fixedly arranged so as not to move in the axial direction of the rolling roll 15.

  The saddle 22 is further provided with a guide clamp mechanism 23 for fixing the guide 14 after the movement is completed. The guide clamp mechanism 23 fixes the guide base 16 to the saddle 22 when the slider block 10, the guide base 16 and the guide 14 are displaced in the axial direction of the rolling roll 15, and the guide 14 is fixed to the rolling roll 15. It is configured to be fixed so that it cannot move in the axial direction. The guide clamp mechanism 23 includes a clamp member 24 that extends along the axial direction of the rolling roll 15, two clamp springs 25 that press the clamp member 24, and two that operate in a direction to push back the two clamp springs 25. And a hydraulic piston 26 for clamping. In a state where the clamping hydraulic piston 26 is not operated, the clamp member 24 is pressed downward in the figure by the two clamp springs 25. Accordingly, the tapered surfaces on both sides of the clamp member 24 press and fix the saddle 22 and the side surfaces of the guide base 16, so that the movement of the guide base 16 in the axial direction of the rolling roll 15 is clamped. On the other hand, in the state in which the two clamping hydraulic pistons 26 are operated, the clamp member 24 is pushed upward in the drawing against the pressing force of the two clamp springs 25, so that the clamp of the guide base 16 is released. . Since the clamp state is obtained by the spring force of the clamp spring 25 rather than the operation of the clamp hydraulic piston 26, the clamp state is reliably maintained without hydraulic pressure.

  The constant angle feed mechanism 19 includes a displacement mechanism 27 (FIGS. 6 and 7) that can be displaced by a unit angle, a displacement mechanism 27 and a rotary shaft 28 of the hydraulic motor 17, and a fitting / removing hydraulic piston 29 and a fitting / removing mechanism. An engagement / disengagement mechanism 30 (FIG. 7) that can be mechanically engaged and disengaged by a spring 36 is provided.

  As shown in detail in FIG. 7, the displacement mechanism 27 in the present embodiment includes a feed frame member 31 having a constant angle feed frame composed of two end faces 31 a and 31 b, and a rotating shaft 28 of the hydraulic motor 17. A constant angle feed lever 32 that is a movable member that is inserted into the constant angle feed frame so as to rotate coaxially with the feed frame member 31 and is movable relative to the feed frame member 31 within the constant angle feed frame. The constant angle feed lever 32 is provided with an origin return spring 33 which is an elastic member capable of initializing the constant angle feed lever 32 to the origin position.

  The constant angle feed lever 32 stops rotating by rotating from the origin position (neutral position shown in FIG. 7) and coming into contact with one end surface 31a or 31b of the constant angle feed frame. It is configured to be displaced. The constant-angle feed lever 32 is pressed by the origin return spring 33 while being detached from the hydraulic motor 17 and returned to the origin position.

  As shown in detail in FIG. 6, the fitting / removal mechanism 30 is mechanically connected to a constant angle feed lever 32, and includes a first fitting surface 34 having an annular uneven surface, and a motor for the hydraulic motor 17. The gear 18 is integrally formed, and is coaxially opposed to the first fitting surface 34, and has a second fitting surface 35 having an annular concavo-convex surface and the first fitting surface 34 as the second fitting surface 34. The fitting hydraulic pressure is used to drive in the direction of the fitting surface 35 (leftward in FIG. 6), and to engage the first fitting surface 34 with the second fitting surface 35 to be in the fitted state. A piston 29 and a fitting / removing spring 36 for pushing back the fitting / removing hydraulic piston 29 to be in a detached state are provided. The constant angle feed lever 32 and the fitting / removing hydraulic piston 29 are engaged with a male spline portion (not shown) of the constant angle feeding lever 32 and a female spline portion (not shown) of the fitting / removing hydraulic piston 29. Further, by fixing with bolts 37, they are integrally fixed to each other coaxially. The fitting / removing spring may be operated to be in a fitted state, and the fitting / removing hydraulic piston may be operated to push back the fitting / removing spring to be in a detached state.

  FIG. 8 schematically shows the configuration of the hydraulic circuit of the position control device in this embodiment.

  In the figure, 80 is an electromagnetic switching valve for a hydraulic motor, 81 is a flow control valve for a hydraulic motor, 82 is a pressure control valve for a hydraulic motor, 83 is an electromagnetic switching valve for a fitting / dismounting hydraulic piston, and 84 is a pressure for a fitting / disengaging hydraulic piston. A control valve, 85 is an electromagnetic switching valve for a clamp hydraulic piston, and 86 is a pressure control valve for a clamp hydraulic piston. By appropriately controlling these valves, the operations of the hydraulic motor 17, the fitting / detaching hydraulic piston 29, and the clamping hydraulic piston 26 are controlled.

  Next, the operation of the guide position control device in this embodiment will be described.

  In order to accurately align the guide 14 with the position of a rolling roll caliber (not shown) provided on the rolling roll 15, the guide 14 including the entry guide 14a and the guide roller 14b into which the rolling material enters is placed on the pass line PL. The operation of moving the rolling roller 15 in the axial direction (hereinafter referred to as lateral movement) and accurately aligning it will be described below in detail with reference to the flowchart shown in FIG.

  [Step S1] First, the hydraulic pressure is applied to the two clamping hydraulic pistons 26 of the guide clamp mechanism 23 by operating the electromagnetic switching valve 85 for the clamping hydraulic piston so that the guide 14 can move laterally. As a result, the clamp member 24 is driven upward in FIG. 5 against the pressing force of the two clamp springs 25, the clamp of the guide base 16 to the saddle 22 is released, and the guide base 16 and the slider block 10 are Lateral movement is possible.

  [Step S2] Next, in order to transmit the driving force of the hydraulic motor 17 to the constant angle feed lever 32, the fitting / removing hydraulic piston 29 of the fitting / removing mechanism 30 is operated by operating the fitting / removing hydraulic piston electromagnetic switching valve 83. Apply oil pressure to As a result, the fitting / removing hydraulic piston 29 is driven in the left direction in FIG. 6 against the pressing force of the fitting / removing spring 36, and the first fitting surface 34 and the second fitting surface 35 are coaxial. Thus, the driving force of the hydraulic motor 17 is transmitted to the constant angle feed lever 32.

[Step S3] In this state, when the hydraulic motor 17 is rotated in one direction, the constant-angle feed lever 32 is rotated from the origin position (neutral position shown in FIG. 7), and one end face 31a of the constant-angle feed frame or The rotation stops by contacting 31b. As a result, the hydraulic motor 17 is displaced by a unit angle. In this embodiment, the unit angle is set to 9 °. The motor gear 18 of the hydraulic motor 17 meshes with the slide shaft gear 13, and thus the unit angular displacement of the hydraulic motor 17 becomes the unit angular displacement of the slide shaft 12. The unit angular displacement of the slide shaft 12 is a unit length displacement of the slider block 10, and hence the guide 14 in the lateral movement direction (axial direction of the rolling roll 15). When the number of teeth of the motor gear 18 and the slide shaft gear 13 is the same, and the screw feed amount of the slider block 10 per rotation of the slide shaft 12 is 2 mm, the guide 14 with respect to the unit angular displacement of the constant angle feed lever 32 is set. The axial movement amount D _U (mm) of the rolling roll 15 is D _U (mm) = 2 mm × (9 ° ÷ 360 °) = 0.05 mm.

  [Step S4] Next, when the hydraulic pressure applied to the fitting / removing hydraulic piston 29 of the fitting / removing mechanism 30 is removed by operating the electromagnetic switching valve 83 for the fitting / removing hydraulic piston, The fitting between the first fitting surface 34 and the second fitting surface 35 is released, whereby the constant-angle feed lever 32 is detached from the hydraulic motor 17 and the origin return spring 33 is released. Is pushed back to the origin position.

  [Step S5] Next, it is determined whether or not the axial movement amount of the rolling roll 15 of the guide 14 has reached a desired value. If not, the processing of steps S2 to S4 is performed. repeat. In this way, by performing the processes of steps S2 to S4, one cycle is fed, and the guide 14 is displaced by the unit displacement length. By repeating this cycle until the required amount of displacement is obtained, the desired amount of displacement is finally obtained. Since the encoder gear 21 meshes with the motor gear 18, the encoder 20 can detect the rotation angle of the hydraulic motor 17, and therefore the actual displacement of the guide 14 can be displayed on the display device. it can.

  [Step S6] In step S5, when it is determined that the axial movement amount of the rolling roll 15 of the guide 14 has reached a desired value (in the case of YES), the hydraulic pressure is removed from the clamping hydraulic piston 26, and the clamping member 24 is pressed downward in the figure by two clamp springs 25. Accordingly, the tapered surfaces on both sides of the clamp member 24 press and fix the saddle 22 and the side surfaces of the guide base 16, so that the movement of the guide base 16 in the axial direction of the rolling roll 15 is clamped.

  As described above, according to the present embodiment, the displacement mechanism 27 and the fitting / removing mechanism 30 of the constant angle feeding mechanism 19 define the displacement amount of the guide 14 in the unit angle feeding operation to a predetermined value. Therefore, the guide 14 is accurately positioned at a desired position in the axial direction of the rolling roll 15 by performing the unit angle feed operation by the constant angle feed mechanism 19 as many times as necessary. Thus, according to this embodiment, since precision positioning parts, such as a ball speed reducer and a positioning fixing member, are not required, the structure becomes very simple, and the manufacturing cost can be reduced. Moreover, since positioning is performed by performing the unit angle feed operation by the constant angle feed mechanism 19 as many times as necessary, position control means, a control panel, a servo motor, etc. are unnecessary, and equipment installation work, wiring and piping work are unnecessary. Therefore, the manufacturing cost can be reduced also in that sense. Furthermore, the outer dimensions can be greatly reduced.

  FIG. 10 shows a mechanical structure of a part of another embodiment of the guide position control device in the rolling mill of the present invention, and FIG. 11 shows the fitting / removal mechanism of the position control device of FIG. 10 in the detached state. FIG. 12 shows the surface along the line XII-XII in FIG. 11, FIG. 13 shows the fitting mechanism of the position control device in FIG. FIG. 14 shows a part of the mechanical configuration when the fixed-size feed mechanism is in the initial state. FIG. 14 shows that the fitting / removal mechanism of the position control device of FIG. FIG. 15 shows a part of the mechanical configuration when the amount feed state is entered, and FIG. 15 shows the position control device shown in FIG. The mechanical structure of a part of is shown.

  In the present embodiment, two hydraulic pistons are provided as a hydraulic drive source in place of the hydraulic motor, and the constant length feed mechanism is a constant length feed mechanism that is directly connected to the slide shaft. 1 to FIG. 9 is different from the case of the embodiment of FIG. Therefore, in the present embodiment, the same reference numerals are used for the same elements as those in the embodiment of FIGS.

  10 to 15, 110 is a slider block that can move linearly in the same direction as the arrow 11 in FIG. 1 (axial direction of the rolling roll), 112 is a slide shaft that meshes with the slider block 110, and 113 is a slide shaft. The slide shaft gears are fixed coaxially to 112 respectively.

  As in the case of the embodiment of FIGS. 1 to 9, a guide 14 (FIG. 2) is detachably mounted on the slider block 110. This guide 14 is for guiding the rolling material which is not shown in figure to the desired position (position of a rolling roll caliber) of the rolling roll 15 (FIG. 2). The slider block 110 has a through hole in which an internal thread is formed on the inner periphery, and the external thread formed on the outer periphery of the slide shaft 112 meshes with the internal thread. Therefore, when the slide shaft 112 rotates in one direction or in the opposite direction, the slider block 110 moves linearly in the axial direction of the rolling roll 15.

  The guide 14 is detachably attached to the slider block 110 via the guide base 16. Therefore, the slider block 110, the guide base 16, and the guide 14 can move linearly in the axial direction of the rolling roll 15.

  A slide shaft gear 113 is coaxially fixed to the slide shaft 112. The slider shaft 110 moves linearly in the axial direction of the rolling roll 15 by rotating the slide shaft 112 by the operation of a hydraulic piston described later. In the present embodiment, a fixed dimension feed mechanism (fixed length feed mechanism) 119 described later is directly attached to the slide shaft 112.

  An encoder gear 21 meshed with a slide shaft gear 113 is coaxially fixed to a rotary shaft 20a of an encoder (not shown) constituting the position detection mechanism. Therefore, the encoder can detect the rotation angle of the slide shaft 112, thereby detecting the actual displacement amount of the guide 14. The detected rotation angle or displacement is displayed on a display device (not shown).

  The slide shaft 112 and the slide shaft gear 113 meshed with the slider block 110 constitute a guide moving mechanism, and the constant-length feed spur gear 132 and hydraulic pistons 117a and 117b described later constitute a hydraulic drive source and constant-length feed. Part of the mechanism 119 is configured. The guide moving mechanism, the hydraulic drive source, the constant length feed mechanism 119, the encoder and the encoder gear 21 are attached to the saddle 22 and fixedly arranged so as not to move in the axial direction of the rolling roll 15.

  The saddle 22 is further provided with a guide clamp mechanism 23 for fixing the guide 14 after the movement is completed. The configuration and operational effects of the guide clamp mechanism 23 are exactly the same as those in the embodiment of FIGS.

  The fixed-length feed mechanism 119 mechanically displaces a displacement mechanism 127 that can be displaced by a unit length, and the displacement mechanism 127 and the slide shaft gear 113 of the slide shaft 112 by means of a fitting hydraulic piston 129 and a fitting spring 136. And a fitting / removing mechanism 130 that can be fitted (engaged) and detached.

  As shown in detail in FIGS. 13 to 15, the displacement mechanism 127 in the present embodiment includes hydraulic pistons 117 a and 117 b and end surfaces 131 a and 131 b of the hydraulic pistons 117 a and 117 b in a state where no oil pressure is applied. A constant-length feed spur gear 132 that is a movable member that can move linearly within the constant-length feed frame, and an elastic member that can initialize the constant-length feed spur gear 132 to the origin position. And an origin return spring 133.

  The fixed-length feed spur gear 132 is linearly moved from the origin position (neutral position shown in FIGS. 10 and 13) in a state of being fitted (engaged) with the slide shaft gear 113, and one end face 131a of the constant-length feed frame. Alternatively, the movement is stopped by abutting against 131b, and thereby, the unit is displaced by a unit length. In addition, the fixed-length feed spur gear 132 is pressed by the origin return spring 133 when the hydraulic pressure applied to the hydraulic pistons 117a and 117b is released while being detached from the slide shaft gear 113. Returned to the home position.

  As shown in detail in FIG. 12, the fitting / removal mechanism 130 drives the constant-length feed spur gear 132 in the direction of the slide shaft gear 113 (upward in FIG. 13), and slides this constant-length feed spur gear 132. It is mechanically connected to an engagement / disengagement spring 136 for meshing with the shaft gear 113 and a fixed-length feed spur gear 132, and the engagement / disengagement hydraulic piston 129 is pushed back to be detached. And a fitting / removing hydraulic piston 129. The fitting / removing spring may be operated to be in a detached state, and the fitting / removing hydraulic piston may be operated to push back the fitting / removing spring to be in a fitting state.

  The configuration of the hydraulic circuit of the position control device in this embodiment is substantially the same as the configuration shown in FIG. 8 except that two hydraulic pistons 117a and 117b are provided in place of the hydraulic motor 17.

  Next, the operation of the guide position control device in this embodiment will be described.

  In order to accurately align the guide 14 with the position of a rolling roll caliber (not shown) provided on the rolling roll 15, the guide 14 containing the rolling material is moved on the pass line in the axial direction of the rolling roller 15 (hereinafter referred to as the rolling roll 15). The operation of accurately aligning the position will be described below with reference to the flowchart shown in FIG.

  [Step S11] First, the hydraulic pressure is applied to the two clamping hydraulic pistons 26 of the guide clamp mechanism 23 by operating the clamp hydraulic piston electromagnetic switching valve 85 (FIG. 8) so that the guide 14 can be moved laterally. To do. Accordingly, the clamp member 24 is driven upward in FIG. 5 against the pressing force of the two clamp springs 25, the clamp of the guide base 16 to the saddle 22 is released, and the guide base 16 and the slider block 110 are Lateral movement is possible.

  [Step S12] Next, in order to transmit the driving force of the hydraulic piston 117a or 117b to the slide shaft 112, the fitting / removing mechanism 130 is fitted / removed by operating the fitting / removing hydraulic piston electromagnetic switching valve 83 (FIG. 8). The hydraulic pressure is released from the hydraulic piston 129 for use. As a result, it is driven upward by the pressing force of the fitting / removing spring 136, and the fixed-length feed spur gear 132 is engaged with the slide shaft gear 113 to be in a fitted state. That is, the state shown in FIG. 11 is changed to the state shown in FIG.

  [Step S13] In this state, when the hydraulic pressure is applied to only one hydraulic piston 117a (or 117b) (the other hydraulic piston is inactive) and moved in one direction, the fixed-length feed spur gear 132 is moved to the origin position. The movement is stopped by moving rightward from the neutral position shown in FIG. 13 and coming into contact with one end face 131b (or 131a) of the constant-angle feed frame. The constant-length feed spur gear 132 meshes with the slide shaft gear 113, and therefore the unit length displacement of the hydraulic piston 117 a (or 117 b) becomes the unit angle displacement of the slide shaft 112. The unit angular displacement of the slide shaft 112 is a unit length displacement of the slider block 110, and thus the lateral movement direction of the guide 14 (axial direction of the rolling roll 15).

  [Step S14] Next, when the hydraulic pressure is applied to the fitting / removing hydraulic piston 129 of the fitting / removing mechanism 130 by operating the fitting / removing hydraulic piston electromagnetic switching valve 83 (FIG. 8), the pressing force of the fitting / removing spring 136 is increased. On the other hand, the constant-length feed spur gear 132 is driven downward, and the engagement with the slide shaft gear 113 is released as shown in FIG. By releasing the hydraulic pressure applied to the hydraulic pistons 117a and 117b in this state, the fixed-length feed spur gear 132 is pressed by the origin return spring 133 and returned to the origin position.

  [Step S15] Next, it is determined whether or not the axial movement amount of the rolling roll 15 of the guide 14 has reached a desired value. If the desired value has not been reached (in the case of NO), the processing of steps S12 to S14 is performed. repeat. As described above, by performing the processing of steps S12 to S14, one cycle of feeding is performed, and the guide 14 is displaced by the unit displacement length. By repeating this cycle until the required amount of displacement is obtained, the desired amount of displacement is finally obtained. Since the encoder gear 21 meshes with the slide shaft gear 113, the encoder can detect the rotation angle of the slide shaft 112, and therefore the actual displacement amount of the guide 14 can be displayed on the display device. it can.

  [Step S16] In step S15, when it is determined that the axial movement amount of the rolling roll 15 of the guide 14 has reached a desired value (in the case of YES), the hydraulic pressure is removed from the clamping hydraulic piston 26, and the clamping member 24 is pressed downward in the figure by two clamp springs 25. Accordingly, the tapered surfaces on both sides of the clamp member 24 press and fix the saddle 22 and the side surfaces of the guide base 16, so that the movement of the guide base 16 in the axial direction of the rolling roll 15 is clamped.

  As described above, according to the present embodiment, the displacement mechanism 127 and the fitting / removing mechanism 130 of the constant length feed mechanism 119 define the displacement amount of the guide 14 in the unit length feed operation to a predetermined value. Therefore, the guide 14 is accurately positioned at a desired position in the axial direction of the rolling roll 15 by performing the unit length feeding operation by the constant length feeding mechanism 119 as many times as necessary. Thus, according to this embodiment, since precision positioning parts, such as a ball speed reducer and a positioning fixing member, are not required, the structure becomes very simple, and the manufacturing cost can be reduced. In addition, since positioning is performed by performing the unit long feed operation by the constant length feed mechanism 119 as many times as necessary, position control means, a control panel, a servo motor, etc. are unnecessary, and equipment installation work, wiring and piping work are not required. Therefore, the manufacturing cost can be reduced also in that sense. Furthermore, the outer dimensions can be greatly reduced.

  All the embodiments described above are illustrative of the present invention and are not intended to be limiting, and the present invention can be implemented in other various modifications and changes. Therefore, the scope of the present invention is defined only by the claims and their equivalents.

DESCRIPTION OF SYMBOLS 10, 110 Slider block 12, 112 Slide shaft 13, 113 Slide shaft gear 14 Guide 14a Entry guide 14b Guide roller 15 Roll roll 16 Guide base 17 Hydraulic motor 18 Motor gear 19 Constant angle feed mechanism 20 Encoder 20a, 28 Rotating shaft 21 Encoder gear 22 Saddle 23 Guide clamp mechanism 24 Clamp member 25 Clamp spring 26 Clamping hydraulic piston 27, 127 Displacement mechanism 29, 129 Fitting hydraulic piston 30, 130 Fitting mechanism 31 Feed frame members 31a, 31b, 131a, 131b End face 32 Constant angle feed lever 33, 133 Origin return spring 34 First fitting surface 35 Second fitting surface 36, 136 Fitting spring 37 Bolt 80 Electromagnetic switching valve 81 for hydraulic motor 81 Hydraulic mode Flow control valve 82 Pressure control valve for hydraulic motor 83 Electromagnetic switching valve for fitting / dismounting hydraulic piston 84 Pressure controlling valve for fitting / disengaging hydraulic piston 85 Electromagnetic switching valve for clamping hydraulic piston 86 Pressure control valve for clamping hydraulic piston 117a, 117b Hydraulic piston 132 Constant-length feed spur gear

Claims (14)

A guide moving mechanism capable of moving the guide of the rolling material in the axial direction of the rolling roll, and a fixed-size feeding mechanism connected to the guide moving mechanism and performing a unit feeding operation for moving the guide by a unit displacement amount. And the unit feed operation by the fixed-size feed mechanism can be performed as many times as necessary. The fixed-size feed mechanism includes a displacement mechanism that can be displaced by a unit displacement amount, the displacement mechanism, and the guide moving mechanism. And a fitting / removing mechanism capable of mechanically fitting and detaching, and the displacement mechanism is unit-displaced in a state where the displacement mechanism and the guide moving mechanism are fitted by the fitting / removing mechanism. The guide is displaced by the amount of the unit displacement, and the displacement mechanism is initialized with the displacement mechanism being detached from the guide moving mechanism by the fitting / removing mechanism. Guide position controller in the rolling mill, characterized in that it is configured. The displacement mechanism is inserted into the fixed-size feed frame of the feed frame member that defines a fixed-size feed frame corresponding to the unit displacement, and is movable within the fixed-size feed frame. A movable member and an elastic member capable of initializing the movable member to the origin position, and the unit displacement is set when the movable member is displaced from the origin position in the fixed-size feed frame. The position control device according to claim 1 . The first fitting surface is provided separately from the displacement mechanism and further includes a hydraulic drive source coupled to the guide moving mechanism, and the fitting / removing mechanism is mechanically coupled to the displacement mechanism. And a second fitting surface that is mechanically coupled to the hydraulic drive source and the guide moving mechanism, and that faces the first fitting surface, and the first fitting surface and position controller according to claim 1 or 2, wherein the second mating surface is configured to be Hamada'. The position control device according to any one of claims 1 to 3 , wherein the fixed-size feed mechanism is a constant-angle feed mechanism that defines an angle amount in a unit feed operation. Further comprising a hydraulic drive source and a spur gear constituting a part of the displacement mechanism, and the fitting / removing mechanism comprises the spur gear and a gear mechanically coupled to the guide moving mechanism, position controller according to claim 1 or 2, characterized in that the spur gear and said gear are Hamada' capable constituted by meshing the desorption. The position control device according to claim 1 , wherein the fixed-size feed mechanism is a fixed-length feed mechanism that defines a length amount in a unit feed operation. The position according to any one of claims 1 to 6 , wherein the fixed-size feed mechanism is configured to be able to define a displacement amount of the guide in any one of two directions opposite to each other. Control device. The position control device according to any one of claims 1 to 7 , further comprising a position detection mechanism capable of detecting a displacement amount of the guide in the axial direction. A rolling mill comprising: a guide for guiding a rolling material to a rolling roll caliber; a slider block on which the guide is detachably mounted; and a saddle on which the slider block is attached so as to be movable in the axial direction of the rolling roll. A guide position control device in
The saddle includes a guide moving mechanism, a fixed-size feed mechanism coupled to the guide moving mechanism, a position detection mechanism capable of detecting a displacement amount of the guide in the axial direction, and a guide for fixing the guide. A clamping mechanism,
The guide moving mechanism includes a slide shaft that meshes with the slider block to move the slider block in the axial direction;
The fixed-size feed mechanism includes a displacement mechanism that can be displaced by a unit displacement amount, and a fitting mechanism that can mechanically fit and remove the displacement mechanism and the guide moving mechanism. The guide mechanism is displaced by a displacement amount corresponding to the unit displacement amount by displacing the displacement mechanism by a unit displacement amount in a state where the displacement mechanism and the guide moving mechanism are fitted by the fitting / removing mechanism, By initializing the displacement of the displacement mechanism in a state where the displacement mechanism is detached from the guide moving mechanism by the fitting / removing mechanism, the displacement amount of the guide in the unit feed operation is regulated to a predetermined value. Configured,
The position detection mechanism is configured to detect a displacement amount of the guide by detecting a rotation angle of the slide shaft,
The guide clamp mechanism is configured to be fixed so that the guide cannot be moved in the axial direction when the displacement of the guide in the axial direction is completed,
A guide position control apparatus in a rolling mill, wherein the unit feed operation by the fixed-size feed mechanism can be performed as many times as necessary. The displacement mechanism is a feed frame member that defines a constant angle feed frame having a unit displacement angle corresponding to the unit displacement amount, and is rotatable coaxially with the constant angle feed frame within the constant angle feed frame of the feed frame member. A movable member that is rotatable relative to the feed frame member within an angular range in which the fixed-angle feed lever moves, and the movable member is at an origin position. and a initialization resilient member, according to claim wherein said that the unit displacement amount is set by the constant angular feed lever is angular displacement the constant angular feed frame from the home position 9 The position control device described in 1. The first fitting surface is provided separately from the displacement mechanism and further includes a hydraulic drive source coupled to the guide moving mechanism, and the fitting / removing mechanism is mechanically coupled to the displacement mechanism. And a second fitting surface that is mechanically coupled to the hydraulic drive source and the guide moving mechanism, and that faces the first fitting surface, and the first fitting surface and The position control device according to claim 9 or 10 , wherein the second fitting surface is configured to be detachable. The displacement mechanism can be linearly moved by a feed frame member that defines a fixed-length feed frame having a unit displacement length corresponding to the unit displacement amount, and a fixed-length feed piston within the fixed-length feed frame of the feed frame member. A movable member and an elastic member capable of initializing the movable member to the original position, and the unit displacement amount by the fixed-length feed piston linearly displacing the movable member within the fixed-size feed frame. The position control device according to claim 9 , wherein: is set. Further comprising a hydraulic drive source and a spur gear constituting a part of the displacement mechanism, and the fitting / removing mechanism comprises the spur gear and a gear mechanically coupled to the guide moving mechanism, The position control device according to claim 9 or 12 , wherein the spur gear and the gear are configured to be engageable and disengageable when engaged and disengaged. The position according to any one of claims 9 to 13 , wherein the fixed-size feed mechanism is configured to be able to define a displacement amount of the guide in any one of two directions opposed to each other. Control device.

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