JPH01228573A - Oiler apparatus - Google Patents

Abstract

PURPOSE:To improve the followability of a cylinder to a thin plate and to uniformly apply anticorrosion oil to the taken up thin plate by generating back pressure by providing a relief valve to the first hydraulic circuit for driving the first cylinder and providing an operation check valve to the second hydraulic circuit for driving the second cylinder to form an operation circuit. CONSTITUTION:A current is supplied to the solenoids 7a of the hydraulic valves 7 of the first and second hydraulic circuits 10, 20 and a relief valve 15 is closed up to certain definite pressure to generate back pressure on the head side 4b of the first cylinder 4. In this state, the first cylinder 4 is allowed to fall and the operation check valve 25 of the second hydraulic circuit 20 is opened, and the head side 5b and rod side 5c of the second cylinder 5 are brought to a continuity state to form an operation circuit and the second cylinder 5 is allowed to rise to bring the coating rollers of the respective cylinders 4, 5 into contact with a thin plate from above and below. Next, the coating roller 6 is pressed downwardly by the first cylinder 4 to be allowed to rise so as to follow the thin plate. At this time, the relief valve 15 acts as a pressure reducing valve.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a device for applying rust preventive oil to a r1 plate when winding a steel plate or the like.

[Conventional technology] A conventional Euler device will be explained using FIG. 2.

In the figure, reference numeral 1 denotes a tension reel, to which the end of a thin plate 2 such as a steel plate is fixed, and is rotated by a motor.

The thin plate 2 sent out via the differential pinch roller 3S is wound up. 4 is a first hydraulic cylinder, and 5 is a second hydraulic cylinder. The hydraulic cylinders 4 and 5 have coating rollers 6, which are coating means, rotatably attached to the tips of the rods 4a and 5a, respectively. The coating roller 6 has a surface made of a fibrous pad, from inside of which a pump exudes rust preventive oil, and as it rolls on the surface of the thin plate 2, the rust preventive oil is applied to the thin plate 2. 7 is 3 position 4
Electromagnetic solenoid 7 a H7b which is a center pressure type hydraulic valve of the boat and switches this hydraulic valve 7
and switches the operating direction of the hydraulic cylinders 4 and 5.

Next, the operation will be explained. The hydraulic valve 7 is held at a position 7f by an internal spring 7e, the first cylinder 4 is held at the upper end position, and the second cylinder 5 is held at the lower end position. When the thin plate 2 begins to be wound up, when the solenoid 7a is energized by a signal from a control section (not shown), the hydraulic valve 7 is switched to the position 7C.

That is, the position is such that the first cylinder 4 is operated downward and the second cylinder 5 is operated upward. The above cylinders 4 and 5 are
The coating roller 6 of the first cylinder 4 is applied to the front surface 2a of the thin plate 2, and the coating roller 6 of the second cylinder 5 is applied to the back surface of the thin plate 2. 2b, apply antirust oil to both sides of the thin plate 2. As the thin plate 2 is wound onto the tension reel 1, the thin plate 2 moves upwards and the cylinder 4.5
Following this, the application roller 6 is always in contact with the thin plate 2. When the winding of the thin plate 2 is completed, the solenoid 7b is energized, the hydraulic valve 7 is switched to the position of the positive control 7d,
The first cylinder 4 is operated upward and the second cylinder 5 is operated downward. When the cylinders 4 and 5 are operated to their respective end positions, the solenoid 7b is turned off to return to the initial state.

[Problems to be Solved by the Invention] Since the conventional oiler device is configured as shown below, the cylinder does not follow the thin plate poorly due to the low operating pressure of the cylinder, making it difficult to form a uniform oil film. Troubled father 1 [
and when the working pressure is increased.

There were problems such as the thrust of the cylinder becoming large and the thin plate bending.

This invention was made in order to solve the problems mentioned in item 1, and its object is to provide an oiler device that can form a uniform oil film by improving the tracking of a cylinder to a thin plate.

[Means for Solving the Problems] The oiler device according to the present invention includes a relief valve in the first hydraulic circuit that moves the first cylinder that slides downward and pressurizes the thin plate from above. to generate back pressure.

And upward Jl'; the second to pressurize the thin plate from below.
A check valve for the operator 1 is provided in the second hydraulic circuit for moving one cylinder to form a differential circuit.

[-Function] The oiler device according to the present invention has the first cylinder IIi.
and a relief valve provided in the first hydraulic circuit that operates.

2nd cylinder I! If! An operation 1-check valve provided in the second hydraulic circuit that operates generates back pressure in the first cylinder, and a second hydraulic circuit is configured as an operating circuit in the second cylinder to increase the operating pressure of the hydraulic circuit. By increasing the height of the cylinder, the cylinder follows the thin plate better, and by reducing the thrust of the cylinder, the thin plate does not bend. .

[Embodiment] Hereinafter, an Euler device according to an embodiment of the present invention will be explained with reference to FIG. Components that are the same as those in FIG. 2 are designated by the same reference numerals, and their explanation will be omitted. In the figure, 10 indicates the first cylinder 4 as 1! ;h is the first hydraulic circuit that moves. This first pressure circuit 1o includes a hydraulic valve 7.

An operating check valve 11.11 prevents the first cylinder 4 from running out of control due to a load on the first cylinder 4, and a relief valve [2] controls the operating pressure of the first cylinder 4.
and a relief valve 15 that generates back pressure in the first cylinder 4.
, the upper part 5/ of the first cylinder 4, a check valve 14 for preventing back pressure from being generated during the process, and a throttle valve 13, 13 for controlling the speed of the first cylinder 4.

20 is a second hydraulic circuit that drives the second cylinder 5.

The second hydraulic circuit 20 includes a hydraulic valve 7, an operation check valve 21 for preventing the second cylinder 5 from running out of control due to a load on the second cylinder 5, and a hydraulic valve 7 for the second cylinder 5.
It consists of a relief valve 22 that controls the operating pressure of the cylinder 5, a throttle valve 23, 24 that controls the speed of the second cylinder 5, and an operating check valve 25, 25 that constitutes an operating circuit during the raising process of the second cylinder 5.

Next, the operation will be explained. In order to apply antirust oil to the thin plate 2, the solenoids 7a of the hydraulic valves 7 of the first hydraulic circuit 10 and the second hydraulic circuit are energized. First hydraulic circuit 10
Pressure builds up in the piping 10a, and the operating check valve 11.11 opens by means of the piping 10b. Further, since the relief valve 15 is closed to a certain constant pressure, back pressure is generated on the head side 4 of the first cylinder 4, and the first cylinder 4 is lowered in a state where the back pressure is applied. At this time, the relief valve 15 operates as a counterbalance valve, and the relief valve 12 operates as a pressure reducing valve. Piping 2Qa of the second hydraulic circuit 20
When the pressure builds up, the pilot piping 201) opens the operating check valve 25.25, and the head side 5b and rod side 5c of the second cylinder 5 are brought into conduction, forming an operation circuit. Decrease and rise. Due to the above operation, the application rollers 6 come into contact with the thin plates 2, respectively. After the application roller 6 comes into contact with the first cylinder 4, the first cylinder 4 moves upward following the thin plate 2 while pressing the application roller 6 downward. At this time, the relief valve 12 is a counterbalance valve,
The relief valve 15 operates as a pressure reducing valve, and the first cylinder 4
The thrust of the engine is reduced.

Note that the throttle valve 24 performs meter-out control on the second cylinder 5, so when a sudden downward load is applied to the second cylinder 5, the throttle valve 24 becomes damping, and the second cylinder 5 becomes a damper. Become. That is, even if the thin plate 2 that is moving upward suddenly falls due to some action, the application roller 6 follows it.

In addition, is there any difference in this example? In this case, the hydraulic valve 7 is provided in the first hydraulic circuit 10 and the second hydraulic circuit 20.

It is also possible to use one hydraulic valve 7 to drive both cylinders 4 and 5.

In addition, in the present invention, the thin plate 2 is moved downward from the ``2''.
The structure is composed of a first cylinder 4 in contact with the thin plate 2, and a second cylinder 5 that slides upward from the do and comes into contact with the thin plate 2. The first hydraulic circuit 10
Alternatively, the second hydraulic circuit 20 alone may move 15 times.

[Effects of the Invention] As described below, according to this invention, the Euler device rt is
IBM for the first cylinder! i') A relief valve is provided in the first hydraulic circuit to generate back pressure, and an operation check valve is provided in the second hydraulic circuit that drives the second cylinder to form a differential circuit. , λ・1 on the thin plate
This improves the tracking of the cylinder and forms a uniform oil film.

[Brief explanation of the drawing]

FIG. 1 is a hydraulic circuit diagram of an oiler device according to one embodiment of the present invention, and FIG. 2 is a hydraulic circuit diagram of a conventional oiler device. 4... 1st cylinder, 5... 2nd cylinder, 10... 1st hydraulic circuit, 20...
Second hydraulic circuit. June 7, 1985 Patent applicant: Kayano (Kyogyo Co., Ltd.

Claims (1)

[Claims] A tension reel for winding a thin plate such as a steel plate, a first cylinder that slides downward and pressurizes the thin plate from above, a second cylinder that slides upward and pressurizes the thin plate from below, and the first cylinder. and a hydraulic circuit for driving the first cylinder and the second cylinder, and an application means for applying rust preventive oil to the thin plate, which is provided at the tip of each of the first cylinder and the second cylinder. A relief valve is provided in the first hydraulic circuit that drives one cylinder to generate back pressure,
The oiler device is further characterized in that an operating check valve is provided in the second hydraulic circuit that drives the second cylinder to form a differential circuit.