JPH0218923B2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention is a two-roll type round bar straightening machine in which the intersection angle of the upper and lower straightening rolls can be adjusted by remote control, and the roll angle can be displayed numerically to accurately This invention relates to a roll angle adjustment device that allows setting.

Conventional Technology Conventionally, as shown in Fig. 5, there are hand-cranked screw handles a and b for rotating the upper and lower straightening roll bearing housings, respectively, on the front of the main body of this type of straightening machine, and the bearing housings c, The roll angles of the straightening rolls e and f rotated together with d are read and adjusted using the display scale of a dial gauge g and the position of a pointer h.

Problems to be Solved by the Invention In the conventional roll angle adjustment device, the total weight of the roll bearing housing and the rolls is large, so when adjusting the roll angle of the upper and lower straightening rolls, the handle is heavy and difficult to operate, and the machine is dusty. Not only was it difficult to turn the handle and adjust the roll angle, but the roll angle was also adjusted using the pointer and scale of a dial gauge that rotated as the bearing housing rotated. Depending on the situation, the setting may easily go awry, and it is not possible for anyone to easily adjust the roll angle to a desired roll angle.

Means for Solving the Problems The present invention has been devised in view of the above problems, and its contents will be explained below using FIGS. 1 to 4 corresponding to embodiments.

In a round bar straightening machine that has a pair of straightening rolls 6 and 7 intersecting each other so as to be adjustable in angle via bearing housings 4 and 5 that are rotatably supported above and below the straightening machine main body 1, the upper and lower straightening roll bearings Abutment parts 2 and 3 are provided on the left and right rear parts of the housings 4 and 5, respectively, and when straightening a round bar, the abutment part 2 of one of the bearing housings 4 and 5 is placed on the side on which the load of the roll is applied by the rotation of the hydraulic motor 8. An extrusion device 11 equipped with a threaded shaft 9 that can move forward or backward for extrusion or retraction, and a hydraulic cylinder 12 on the other side move the piston rod 13 forward;
A support device 14 that moves forward and backward later to support the other contact portion of the bearing housings 4 and 5 is installed, and these hydraulic motors 8 and hydraulic cylinders 12 are remotely controlled by hydraulic pressure to rotate each of the bearing housings 4 and 5. At the same time, the rotation is transmitted from the rotation center shaft 15 to the shaft 18 via the gears 16 and 17, and the amount of rotation is detected by the angle display detecting section 19 and a number is displayed on the display section on the remote control panel. This is a remote roll angle adjustment device for a two-roll round bar straightening machine, which is used to set the roll angle.

Function The present invention has the above-mentioned configuration, and when pressure oil is sent to the hydraulic motor 8 of the extrusion device 11, the motor is rotated, and the threaded shaft 9 moves forward, and its tip touches the contact portion 2 of the bearing housings 4, 5. , 2 are pushed and rotated in one direction, and together with the bearing housings 4 and 5, the angle of the straightening rolls 6 and 7 with respect to the passage line of the material to be straightened changes, and as the bearing housings 6 and 7 rotate, Rotation is transmitted from the rotation center shaft 15 to the shaft 18 via the gears 16 and 17, and the rotation is detected by the detection unit 1 for angle detection.
9 and displays the roll angle numerically on the numerical display section on the remote control panel. At this time, the piston rod 13 of the hydraulic cylinder 12 of the other support device 14 is moved to the abutting portions 3 and 3 by the rotation of the bearing housings 4 and 5.
Since the straightening rolls 6 and 7 are pushed in and supported by hydraulic pressure while always in contact with the contact part 3, after adjusting the roll angle of the straightening rolls 6 and 7 to the desired roll angle while checking the numbers shown on the display, Hydrolock is applied as appropriate. Further, by rotating the hydraulic motor 8 in the opposite direction, the threaded shaft 9 is retracted, and in response, the piston rod 13 is pushed out by operating the hydraulic cylinder 12 and is inserted into each bearing housing 4 through the contact portion 3. , 5 are rotated in the opposite direction to the above, and the roll angle is displayed numerically on the display on the remote control panel through the same route as above, so you can set the desired roll angle by looking at this. , the abutting portion 2 is stopped at the tip of the threaded shaft 9.

Embodiment An embodiment of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes a main body of a round bar straightening machine, and roll bearing housings 4 and 5 have straightening rolls 6 and 7 mounted on an upper frame 1a and a lower frame 1b. are supported so as to be horizontally rotatable.

Abutment parts 2 and 3 are provided on the left and right sides of the rear parts of the upper and lower bearing housings 4 and 5, and upper and lower frames 1a and 1b are provided.
When straightening a round bar, a hollow screw shaft 8a rotated by a hydraulic motor 8 is mounted on the side on which the load of the roll is applied.
An extrusion device 11 is attached, which has a threaded shaft 9 that can be screwed together to extrude one of the abutting portions 2 or retract. The hydraulic motor 8 is fixed to the frame, the threaded shaft 9 supports the abutting part 2 at its tip, and the threaded shaft 9 is screwed into a hollow screw shaft 8a.
The rear portion is housed in a cylindrical portion 22 provided in the frame 1a, and the threaded shaft 9 is moved forward and backward in a straight line by inserting a fixing pin 21 into a groove 20 provided in the axial direction.

The piston rod 1 of the hydraulic cylinder 12 is inserted through the cylindrical portion 23 provided on the other side of the upper and lower frames 1a and 1b.
A supporting device 14 is installed in which the hydraulic cylinder 12 is fixed to the frame by inserting the hydraulic cylinder 3 so as to move back and forth to push or stop the contact portion 3.

Since the upper and lower straightening rolls 6 and 7 are loaded on opposite sides during straightening, the positions of the extrusion device 11 and the support device 14 are reversed left and right. The hydraulic motor 8 and hydraulic cylinder 12 of these devices are hydraulically operated by operating a remote control panel (not shown).

At the centers of the bearing housings 4 and 5, there are provided rotation center shafts 15 for taking out the rotation, which is transmitted to the shaft 18 via bevel gears 16 and 17, and for detecting the rotation and displaying it as a numerical value. A detection unit 19 for angle detection is attached to the straightening machine body. This detection section 19 is connected to a display section (not shown) on a remote control panel by a cord, and can numerically display the roll angle of the straightening rolls 6 and 7 as the bearing housings 4 and 5 rotate. There is. Therefore, the hydraulic motor 8 and the hydraulic cylinder 1 can be controlled remotely.
2, the upper and lower bearing housings 4 and 5 are rotated, and the roll angle is displayed in numbers on the detection part on the remote control panel via the detection part 19. Roll angles of 6 and 7 can be easily set.

Effects of the Invention Since the present invention has the above-described configuration, the roll angle adjustment in a two-roll round bar straightening machine can be easily controlled remotely, and the labor required to turn the heavy handle as in the past is relieved. In addition, the roll angle can be changed and adjusted quickly and easily.
Easy to operate. In addition, since the roll angle is displayed numerically, there is no error in the digital display, and the roll angle setting will not go awry. Anyone can easily and easily set the same setting, and it is reproducible. It has the following.

[Brief explanation of drawings]

FIG. 1 is a schematic plan view of the entire two-roll round bar straightening machine equipped with the device of the present invention, FIG. 2 is a front view of the same, and FIG.
FIG. 4 is an explanatory cross-sectional view showing the upper roll angle adjusting device, FIG. 4 is an explanatory view showing the lower roll angle adjusting device, and FIG. 5 is a schematic front view of a conventional round bar straightening machine. 1 is a round bar straightening machine, 2 and 3 are contact parts, 4 and 5 are upper and lower roll bearing housings, 6 and 7 are straightening rolls, 8 is a motor, 9 is a threaded shaft, 11 is an extrusion device, 12 is a Hydraulic cylinder, 13 is a piston rod,
14 is a support device, 15 is a rotation center axis, 16, 17
is a gear, 18 is a shaft, and 19 is a detection unit.

Claims (1)

[Claims] 1. In a round bar straightening machine that has a pair of straightening rolls intersecting each other so as to be adjustable in angle through a vertically rotatable bearing housing, contact parts are provided on the left and right sides of the rear part of the upper and lower straightening roll bearing housings, respectively, and the round bar The extrusion device is equipped with a threaded shaft on the side on which the load of the roll is applied during straightening and moves the bearing housing forward and backward by the rotation of the motor, and rotates the bearing housing, and a hydraulic cylinder moves the piston rod forward and backward to move the bearing housing. A support device for supporting the other abutting portion is arranged, and these motors and hydraulic cylinders are remotely controlled to rotate each bearing housing,
The rotation is transmitted from the rotation center shaft to the shaft via gears, detected by the angle detection detector, and displayed numerically on the display on the remote control panel to set the roll angle. Remote roll angle adjustment device for bar straightening machines.