JPH0734933B2 - SOLID HOLDING METHOD, SOLID HOLDING DEVICE, AND ROLLED STEEL GUIDANCE GUIDING DEVICE - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solid material holding method, a solid material holding device, and a guide device for rolled steel.

[0002]

2. Description of the Related Art For example, in a wide range of manufacturing processes of various metallic materials, a transportation line, etc., the operation of holding the metallic materials from both sides is performed everywhere. Among them, a method and a holding device for holding symmetrically about a center axis are known. As a concrete example, a pinch roll device in various manufacturing or conveying processes, or a guide device for rolled steel material in a steel material bar and shaped steel rolling process is a typical application example.

Conventionally, for example, in a guide device for rolled steel material, a required function is to guide and guide the rolled steel material to a roll bite of a rolling mill of the next stand in a normal posture without tilting or twisting. . In recent years, high-speed rolling, low-temperature rolling (including controlled rolling and controlled cooling), special steel rolling, etc. have become widespread and put into practical use, and the load applied to the guiding device increases due to an increase in deformation resistance. Higher rigidity of itself has been demanded. Further, the improvement of cross-sectional shape and dimensional accuracy of hot rolled products has been strongly requested by product users.
Therefore, strict demands have also been made on the holding interval and the positioning accuracy of the guide device.

[0004]

At present, "high rigidity + high positioning accuracy (including spacing accuracy)" is satisfied,
The reality is that a low-cost guidance system has not been realized in the severe environment of "high temperature + dirt". There are various linear motion and rotary motion actuators, feed motion transmission elements and feed mechanisms as the space adjustment mechanism or positioning mechanism, which are widely applied to precision machinery, etc. It is also possible to do it. For example, as a feed mechanism, in a mechanism in which a threaded bracket is connected to a threaded shaft connected to a fluid pressure motor and a guide roller is held to this bracket via a side frame, the rigidity between the guide rollers is very low. There is a drawback that. To compensate for this drawback, if the wall surface of the side frame incorporating the guide rollers is additionally held by, for example, a hydraulic cylinder, the rigidity between the guide rollers is improved. However, generally, since the space for incorporating the guide device itself is small, the movable range of the hydraulic cylinder is small, and as a result, there are drawbacks such as a small holding interval or positioning control width. Further, the cost-increasing factors such as the necessity of two fluid pressure circuits for the fluid pressure motor and the hydraulic cylinders overlap. Further, if a mechanism is used in which the guide roller is held only by the hydraulic cylinder, there is a problem that positioning (stop position) control is difficult. An object of the present invention is to endure a high temperature / poor use environment, improve rigidity between holding parts, and improve positioning accuracy. Another object of the present invention is to provide an inexpensive device.
Further, another object of the present invention is to enable the spacing control and positioning of a large movement amount of the holding portion even in a small installation space.

[0005]

The holding method of the present invention comprises:
A method of holding a solid matter between a pair of holding parts, wherein the distance between the holding parts is adjusted and positioned along with the rotation of the shaft that is driven by the rotation of the fluid pressure motor by the fluid of the fluid pressure circuit, and The movement amount and position of the holding portion is detected by a detection device, and the detection signal and the fluid of the fluid pressure circuit simultaneously rotate the fluid pressure motor, and at the same time, a pair of telescope type fluid pressures communicating with the fluid pressure circuit. The cylinder is operated for a distance corresponding to the amount of movement of the fluid pressure motor due to rotation, so that the tip of the fluid pressure cylinder is always brought into contact with the holding portion. The holding device of the present invention detects a pair of holding portions, a feeding mechanism capable of adjusting and positioning the holding portion spacing, a backup mechanism for increasing the rigidity between the holding portions, and a movement amount and position of the holding portions. And a fluid pressure circuit. The holding part holds a solid material between the opposed parts. The feed mechanism includes a shaft that forms a pair of screw parts that rotate in opposite directions, a fluid pressure motor that rotates the shaft, a screw connection with the screw part on one side, and a holding part on the other side. And a pair of supports that are provided. The detection device is associated with the shaft. The backup mechanism includes a pair of telescope type fluid pressure cylinders that are in contact with a pair of holding portions, and a holding unit that holds each fluid pressure cylinder. The fluid pressure circuit is connected to the fluid pressure motor and the fluid pressure cylinder, respectively, and the fluid flowing through the fluid pressure circuit is used to rotate the fluid pressure motor and drive the fluid pressure cylinder. A holder such as a guide roller or a pinch roller for directly holding a fixed object is incorporated in the holder. The fluid used to drive the fluid pressure motor and fluid pressure cylinder includes hydraulic oil and compressed air. The rolled steel guide guide apparatus of the present invention comprises a pair of guide rollers supported by a supporting means, a feed mechanism capable of adjusting and positioning the guide roller spacing, and a backup mechanism for increasing the rigidity between the guide rollers. A detection device for detecting the movement amount and the position of the guide roller, and a fluid pressure circuit. The guide roller holds the rolled steel material between the opposed rollers. The feeding mechanism includes a shaft that forms a pair of screw parts that rotate in opposite directions, a fluid pressure motor that is connected to one end of the shaft and that rotates the shaft, and a screw connection with the screw part on one side and the other side. And a pair of supports connected to the guide roller. The detection device is connected to the other end of the shaft. The backup mechanism includes a pair of telescope type fluid pressure cylinders that are in contact with the support means, and holding means that holds the fluid pressure cylinders. The fluid pressure circuit is connected to the fluid pressure motor and the fluid pressure cylinder, respectively, and the fluid flowing through the fluid pressure circuit is used to rotate the fluid pressure motor and drive the fluid pressure cylinder.

[0006]

[Function] When the space between the holding portions is narrowed, the fluid pressure circuit is activated to load the fluid pressure, and the fluid pressure motor of the feed mechanism is activated to rotate the shaft. The support is fed in the direction of the center axis, and the holding parts connected to the support move at the same time, so that the holding part interval becomes narrow. At the same time as this feeding operation, the telescope type fluid pressure cylinder is operated sequentially and follows the discharge amount of the fluid proportional to the rotation speed of the fluid pressure motor through the shared fluid pressure circuit and contacts the wall surface of the holding part. While pushing this wall. The fluid pressure motor is stopped at the same time when the predetermined holding portion interval is reached by the detection device that is interlocked with the shaft. On the contrary, when the holding portion interval is widened, the fluid pressure motor may be rotated in the reverse direction. The detection device stops the rotation of the fluid pressure motor at a predetermined position.

[0007]

EXAMPLES First, a solid material holding device will be described, and then a solid material holding method will be described. As an embodiment of the solid material holding device according to the present invention, a rolled steel material guiding and guiding device will be described with reference to the drawings. The guide device shown in FIG. 1 includes a pair of holding members, a guide roller 1, a feed mechanism 2 capable of adjusting and positioning the guide roller distance, a backup mechanism 3 for increasing the rigidity between the guide rollers,
The rotary encoder 4 is a detection device for detecting the movement amount and position of the guide roller, and the fluid pressure circuit 5. Each of the guide rollers 1 is rotatably supported by a pair of U-shaped side frames 7 arranged inside a frame frame 6 having a front groove shape. The guide roller 1 is a rolled steel material M that is a solid material between the rollers facing each other.
Is to hold. The feed mechanism 2 includes a shaft 8 and
A fluid pressure motor 9 for rotating the shaft and a bracket 10 as a pair of supports are provided. Shaft 8
Is horizontally arranged below the gantry frame 6, and both ends of the shaft are rotatably supported by bearings 11 extending from the bottom of the gantry frame. On both ends of the shaft 8, threaded portions 8a and 8b formed of a pair of threaded grooves that rotate in opposite directions are formed. Each bracket 10 is
It has a thread groove, and is screwed to the screw portions 8a and 8b on one side (lower side in the figure), and penetrates the bottom portion of the gantry frame 6 on the other side and is connected to the side frame 7. The fluid pressure motor 9 is composed of a hydraulic motor and is held at the bottom of the gantry frame 6. The fluid pressure motor 9 has a shaft 8
Is a motor for driving shaft rotation, which is connected to one end (right end in FIG. 1) of the shaft through a universal joint 12. For this,
The operation of the fluid pressure motor 9 causes the shaft 8 to rotate,
With this rotation, the brackets 10 screwed to the screw portions 8a and 8b move toward and away from each other by the same distance about the center axis (symmetry axis) L, and the guide roller 1 also moves in the same manner. As a result, the distance between the rollers is narrowed or widened, and the set position of the guide rollers is controlled.

The backup mechanism 3 comprises a pair of telescope type fluid pressure cylinders 13 and a side plate 6a of a gantry frame 6 which is a holding means for holding each fluid pressure cylinder. The fluid pressure cylinder 13 has its rear end attached to the inner surface of the side plate 6a of the gantry frame 6 so as to be supported by the side plate in a horizontal state in a cantilever manner. The fluid pressure cylinder 13 is composed of a multi-stage hydraulic cylinder, and has a side frame 7 at its tip.
Is in contact with the wall surface of. Expansion and contraction of the fluid pressure cylinder 13
As will be described later, it follows the operation of the fluid pressure motor 9 and follows the movement of the side frame 7. Therefore, the tip of the fluid pressure cylinder is always in contact with the wall surface of the side frame 7.

The rotary encoder 4 constitutes a part of a detecting device for detecting the moving amount and the position of the guide roller 1, and is held at the bottom of the gantry frame 6. The rotary encoder 4 is connected to the other end of the shaft 8 via a universal joint 12a and detects the number of rotations of the shaft and the amount of movement of the guide roller 1.

The fluid pressure circuit 5 is composed of a hydraulic circuit in this example. The fluid pressure circuit 5 is a system of fluid pressure circuit that is connected to the fluid pressure motor 9 of the feed mechanism and the fluid pressure cylinder 13 of the backup mechanism, and is also used as a drive circuit for both mechanisms. In the fluid pressure circuit 5, 14
Is a directional control valve, 15 is a tuning adjustment valve, 16 is a switching valve,
Reference numeral 17 is a diversion valve, and 18 is a safety valve. The conduit 19 communicates with the tank T, and the conduit 19a communicates with the pump P. The fluid pressure motor 9 communicates with the direction control valve 14 via the conduits 19b and 19c. By controlling the directional control valve 14,
The direction of the hydraulic oil passing through the conduits 19b and 19c is changed, and the fluid pressure motor 9 is rotated normally or reversely. Further, the fluid pressure cylinder 13 communicates with the flow dividing valve 17 via the conduits 19d and 19e. By switching the switching valve 16, the conduit 19d,
The direction of the hydraulic oil passing through 19e changes and the fluid pressure cylinder 13
Is expanded or contracted.

Next, a method of holding the rolled steel material will be described. The case shown in FIG. 2 in which the interval between the guide rollers 1 is narrowed will be described. The valve 14a of the directional control valve 14 is switched in advance, and the valve 16a of the switching valve 16 and the flow dividing valve 17 are set in communication with each other in advance. Therefore, when the fluid pressure circuit is activated to load the fluid pressure, the fluid pressure motor 9 operates and the shaft 8 rotates (for example, normal rotation). With the rotation of the shaft, the pair of brackets 10 move in the direction of the center axis L, and the guide rollers 1 connected to the brackets 1
The side frames 7 incorporating the same move in the same direction at the same time, and the roller interval becomes narrow. At the same time as this feeding operation,
The tip ends of the pair of telescope type fluid pressure cylinders 13 are sequentially operated in accordance with the discharge amount of the fluid proportional to the rotation speed of the fluid pressure motor 9, and push the wall surfaces of the side frames 7 while abutting them.

At the same time when a predetermined roller interval is reached, a measurement / control system (not shown) having a rotary encoder 4 for position measurement attached to the shaft end of the shaft 8 as a detection end shown in FIG. The fluid pressure motor 9 is stopped. The route of the hydraulic oil in the course of this series of operations is as follows. That is, the pipelines 19a, 19f, 1
The hydraulic oil pressure-fed in the direction of the arrow 9b is the fluid pressure motor 9
After being operated, the gas is discharged from here and flows through the pipe line 19c in the direction of the arrow, and from the pipe line 19g to one valve 1 of the switching valve 16.
After passing through 6b, the flow is divided by the flow dividing valve 17 to form the pipes 19d and 19e.
Is supplied to each fluid pressure cylinder 13 to extend these fluid pressure cylinders. On the contrary, when the roller gap is widened as shown in FIG. 3, the other valve 14b of the directional control valve 14 is switched to the other valve 14b of the directional control valve 14 in advance.
The fluid pressure motor 9 may be rotated in the reverse direction after the 6b and the flow dividing valve 17 are in communication with each other. The position measurement / control system using the rotary encoder 4 stops the rotation of the fluid pressure motor at a predetermined position. The route of the hydraulic oil that operates in the process of this operation is as follows. That is, the hydraulic oil pressure-fed through the tuning control valve 15 and the pipeline 19c of the pipeline 19a and the pipeline 19g shown in FIG. 3 is discharged from here after the fluid pressure motor 9 is operated. Flow in the direction of the arrow through the line 19b, and from the line 19f to the line 1
Return to 9. Further, the hydraulic oil discharged from the cylinders due to the contraction of both the fluid pressure cylinders 13 is supplied to the pipelines 19d and 19e.
From the other valve 1 of the switching valve 16
Pipe line 1 flowing to the tank T through the pipe line 19f via 6a
Flow through 9.

According to the example shown in FIG. 1, since the three-stage telescopic hydraulic cylinder 13 is used, the variable width range of the guide roller interval is about 3 as compared with the conventional one-stage hydraulic cylinder. -4 times expandable. For this reason,
It has become possible to reduce the total number of guide guidance devices owned to support a wide range of flat steel sizes. Since the rotary encoder is used for position detection, the positioning operation is highly accurate. Since the hydraulic circuit for driving the hydraulic motor 9 and the telescopic hydraulic cylinder 13 can be shared, there is no need to install a dedicated hydraulic circuit for each, which greatly contributes to the low manufacturing cost. Furthermore, when the telescopic hydraulic cylinder is reduced, the space it occupies becomes smaller, so that the stroke as a whole becomes large and the interval control width becomes large. Further, even if the load applied to the guide roller 1 changes during the work, since the hydraulic circuit is sealed, the hydraulic pressure in the telescope type hydraulic cylinder 13 rises and the load can be instantly followed. The rigidity between the guide rollers is also very high. Therefore, the fluctuation of the guide roller gap can be suppressed. Therefore, it can be said that it is suitable for use as a steel material guide device or a pinch roll device for a rolling mill for rolled steel or shaped steel. As described above, according to the present invention having the mechanism shown in FIG. 1, the performance of satisfying the high dimensional accuracy of the rolled steel material, the rigidity of the apparatus, the operability and the low cost, which are required for the guide guide device for the rolling mill, is exhibited. There is.

The field of application of the present invention does not have to be limited to the manufacturing process of metal materials, the conveying line, etc., and can be applied as long as solid matter is held. In the above example, a hydraulic motor is used as the fluid pressure motor, a telescope type cylinder is used as the fluid pressure cylinder, and hydraulic pressure is used as the driving fluid for the motor and the cylinder, but the driving fluid is not limited to this example. , Compressed air and other fluids can be used.

[0015]

According to the holding method of the present invention, since the telescope type cylinder is always in contact with the holding portions in synchronization with the feed mechanism for controlling the spacing and positioning of the holding portions, the rigidity between the holding portions can be improved. The operability is improved by simultaneously operating the fluid pressure cylinder and the fluid pressure motor. According to the holding device of the present invention, the fluid pressure cylinder is configured to follow the fluid pressure motor and is provided with the backup mechanism that is always in contact with the holding portion. Therefore, as a solid, for example, in the case of rolled steel, the effect of improving the dimensional accuracy of rolled products is produced. Since the feed mechanism equipped with the fluid pressure motor and the fluid pressure circuit for operating and controlling the backup mechanism mainly including the telescope type fluid pressure cylinder are combined, the facility cost is reduced and the interlocking function is improved. In addition, since the telescope type fluid pressure cylinder is used, the variable width of the space between the holding parts is expanded within a certain space, and even if the installation space is small, it is possible to control and position the moving amount of the holding part. Is possible. According to the guide device of the present invention, high rigidity of the device is possible, and the feed mechanism and the backup mechanism improve the space retention between the guide rollers and the positioning accuracy,
The device can be provided at low cost by also using the fluid pressure circuit.

[Brief description of drawings]

FIG. 1 is a basic configuration diagram of a solid material holding device according to the present invention, in which the left side of the guide roller is located close to the center axis and the right side of the guide roller is separated from the center axis. It is a figure showing the state where it did.

FIG. 2 is a basic configuration diagram of a solid material holding device according to the present invention showing a state in which a roller interval is reduced.

FIG. 3 is a basic configuration diagram of a solid material holding device according to the present invention, showing a state in which a roller interval is expanded.

[Explanation of symbols]

 1 Guide Roller 2 Feed Mechanism 3 Backup Mechanism 4 Detecting Device (Rotary Encoder) 5 Fluid Pressure Circuit 6 Holding Means (Side Plate of Stand Frame) 7 Support Means (Side Frame) 8 Shaft 8a Screw Part 8b Screw Part 9 Fluid Pressure Motor 10 Bracket 13 Telescope type fluid pressure cylinder 14 Directional control valve 15 Tuning valve 16 Switching valve 17 Dividing valve 19 Pipeline 19a Pipeline 19b Pipeline 19c Pipeline 19d Pipeline 19e Pipeline 19f Pipeline 19g Pipeline L Center axis M Solid (rolled steel)

Claims (3)

[Claims] 1. A method for holding a solid matter between a pair of holding parts, wherein the space between the holding parts is adjusted in accordance with the rotation of a shaft that is driven by the rotation of a fluid pressure motor by the fluid of a fluid pressure circuit, While being positioned, the movement amount and position of the holding portion are detected by a detection device, and the detection signal and the fluid in the fluid pressure circuit simultaneously rotate the fluid pressure motor to simultaneously communicate with the pair of fluid pressure circuits. A solid object characterized in that the telescope type fluid pressure cylinder is operated for a distance corresponding to the movement amount by the rotation of the fluid pressure motor so that the tip of the fluid pressure cylinder is always brought into contact with the holding portion. How to hold. 2. A pair of holding parts, a feed mechanism capable of adjusting and positioning the holding part spacing, a backup mechanism for increasing the rigidity between the holding parts, and a detection for detecting the movement amount and position of the holding parts. A holder and a fluid pressure circuit, the holding portion holds a solid material between the opposed portions, and the feed mechanism has a shaft forming a pair of screw portions that rotate in opposite directions. And a pair of supports that are threadedly connected to the threaded portion on one side and connected to the holding portion on the other side, and the fluid pressure motor that rotates the shaft, The backup mechanism includes a pair of telescope type fluid pressure cylinders that are in contact with a pair of holding portions, and a holding unit that holds each fluid pressure cylinder. Fluid pressure motor They are respectively connected to the micro-fluid pressure cylinder, the holding device of solids, characterized in that the fluid flowing through the fluid pressure circuit is used to drive the rotary 及流 body pressure cylinder of the fluid pressure motor. 3. A pair of guide rollers supported by supporting means, a feed mechanism capable of adjusting and positioning the guide roller spacing, a backup mechanism for increasing the rigidity between the guide rollers, and a movement of the guide rollers. It comprises a detection device for detecting the amount and the position, and a fluid pressure circuit, the guide roller holds rolled steel material between the opposed parts, and the feed mechanism comprises a pair of screws rotating in opposite directions. A shaft that forms a portion, a fluid pressure motor that is connected to one end of the shaft to rotate the shaft, and a pair of supports that are threadedly connected to the screw portion on one side and are connected to the guide roller on the other side. And the detection device is connected to the other end of the shaft, and the backup mechanism is a pair of telescope type members that are in contact with the supporting means. The fluid pressure circuit comprises a body pressure cylinder and holding means for holding each fluid pressure cylinder. The fluid pressure circuit is connected to the fluid pressure motor and the fluid pressure cylinder, respectively, and the fluid flowing through the fluid pressure circuit is a fluid pressure motor. And a guide device for rolled steel material, which is used for driving a rotating cylinder and a fluid pressure cylinder.