KR200324707Y1 - Device for removing oil of strip grinder senser - Google Patents

Abstract

An object of the present invention is to provide an abrasive oil removal structure of a strip grinder to detect and automatically remove abrasive oil when it is introduced through an air sensor.

To this end, the present invention is a U-shaped pipe installed in the connecting pipe connecting the branch pipe and the air pressure detector, a drain pipe connected to the bottom of the U-shaped pipe to discharge the abrasive oil, and installed on one side of the drain pipe to signal the controller. The solenoid valve is turned on / off by a timer that operates for a certain time, and the switch is switched by the first and third detectors. It provides a polishing oil removal device consisting of a relay that detects the operation cycle of the switching valve and sends a signal to the controller.

Description

Device for removing oil of strip grinder sensor

The present invention relates to a strip grinder for polishing a strip subjected to a stainless annealing pickling process, and more particularly, to a polishing oil removing device of a strip grinder which can prevent the inflow of abrasive oil into the air sensor of the strip grinder.

In general, the pickled coil removes defects on the surface of the strip to meet the needs of the consumer. The strip grinder is a facility for removing defects on the surface of the strip by using a polishing belt rotating at high speed.

These strip grinders are generally rotated at a high speed of more than 1200 RPM for polishing, so that the polishing belt is reciprocated periodically to prevent excessive wear of the belt and the belt edge and to improve the polishing rate.

FIG. 1 is a view illustrating a general strip grinder, in which a billy roll 51 in which a strip 100 is placed is installed in a lower portion of a housing 50, and a drive shaft which is a drive shaft on a strip 100 placed in the billy roll 51. Referring to FIG. The grinding belt 54 supported by the 52 and the tension roll 53 is located.

In addition, the lower portion of the center of the bracket 55 supporting the tension roll 53 is rotatably coupled to the contact control fixing bracket 56 by the shaft 57, and the tension roll 53 is mounted on the bracket ( 55 is configured to reciprocate about the shaft 57 by the polishing belt tracking means 60 and the hydraulic cylinder 58 which is operated by applying the hydraulic oil in accordance with the signal of the tracking means 60. Able to know.

Such strip grinders generally use air for sensing the polishing belt, but the conventional tracking means operating structure does not include means for properly removing the abrasive oil when it is introduced through the air sensor. There was a problem that the pipe to be supplied is blocked.

That is, FIG. 3 is a view schematically showing an operation structure of a conventional strip grinder, in which an air supply pipe 61 is installed on one side of a tension roll support bracket through which the polishing belt 54 passes, and on the air pipe 61. The three branch pipes 62, 63, and 64 are formed with air sensor holes 65, 66, and 67 for discharging air to the polishing belt 54, respectively. The detectors 69, 71 connected to the first branch pipe 62 and the third branch pipe 64 of the branch pipes are connected to the air pressure detectors 69, 70, and 71 which can be detected. The detector 70 is connected to the controller 74 through the press switches 72 and 73 for detecting an abnormality of the switch and converts the electric signal, and the detector 70 connected to the second branch pipe 63 according to the height of the air pressure. The direction change valve 75 is operated to change the direction of the hydraulic oil flowing into the cylinder 58, while the tension roll operating cylinder 58 As the direction of the main valve 75 is switched, it is extended / contracted so as to reciprocate the tension roll 53.

In this way, the air sensor sphere formed in the second branch pipe is periodically blocked and opened as the polishing belt is tracked by the reciprocating tension roll, and the detector detects the pressure change generated at this time and periodically expands and contracts the hydraulic cylinder. When the abrasive oil flows into the sensor sphere, the air pressure sent to the detector is always constant so that the tension roll cannot be reciprocated.

However, the conventional structure described above has been inconvenient to maintain the grinder by stopping the grinder because it is not provided with a suitable means for removing the case when the connection pipe to the detector is blocked by the abrasive oil flow into the air sensor sphere.

Therefore, the air grinder must be dismantled by stopping the grinder, which is not only a large amount of work but also a waste of time due to stopping work.

The present invention has been made in order to solve the problems described above, it is an object of the present invention to provide an abrasive oil removal device of the strip grinder to automatically detect the removal of the abrasive oil through the air sensor sphere. .

1 is a schematic diagram showing a typical strip grinder,

Figure 2 is a schematic operating state of the strip grinder abrasive oil removal apparatus according to the present invention,

3 is a schematic operational state diagram of a strip grinder according to the prior art.

Explanation of symbols on the main parts of the drawings

10: U-shaped pipe 11: Drain pipe

12: timer 13: solenoid valve

14: relay

The present invention for achieving the object as described above, the U-shaped pipe is installed in the connection pipe connecting the branch pipe formed with the air pressure detector and the air sensor sphere, the bottom of the U-shaped pipe is a drain pipe discharged with the abrasive oil This drain pipe is equipped with a solenoid valve that is turned on / off by a timer that operates for a certain time in response to a signal from the controller, so that the abrasive oil flowing into the pipe can be removed.

This saves the trouble of having to maintain the air pressure detector to remove the abrasive oil.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Figure 1 is a schematic configuration diagram showing a typical strip grinder, Figure 2 is a schematic operation state diagram of the strip grinder abrasive oil removal apparatus according to the present invention.

According to the above-described drawings, the strip grinder has a billy roll 51 in which the strip 100 is placed under the housing 50, and a control shaft 52 which is a driving shaft on the strip 100 placed on the billy roll 51. ) And a polishing belt 54 supported by the tension roll 53, and a lower portion of the center of the bracket 55 supporting the tension roll 53 is rotatably coupled to the shaft 57. The tension roll 53 is formed on the shaft 57 by a polishing belt 54 tracking means 60 installed on the bracket 55 and a hydraulic cylinder 58 which is operated by receiving hydraulic oil by the tracking means 60. It is structured to reciprocate around.

Here, the tracking means 60 has a structure for sensing pressure by using air, and an air supply pipe 61 is installed on the side of the tension roll 53 and the support bracket 55, and the air pipe 61 is provided. The three branch pipes 62, 63, and 64 formed thereon are formed with air sensor holes 65, 66, 67 for discharging air to the polishing belt 54, respectively. First and third detectors connected to three air pressure detectors 69, 70, and 71 capable of detecting pressure, and connected to the first branch pipe 62 and the third branch pipe 64 of the branch pipes. The second detector 69 and 71 input only to the controller 74 through the press switches 72 and 73 for detecting an abnormality of air pressure and converting the electric signal, and the second detector connected to the second branch pipe 63. (70) operates the direction switching valve 75 in accordance with the height of the air pressure to change the direction of the pressure oil flowing into the cylinder 58, while the seal for operating the tension roll 53 The 58 is extended / contracted according to the switched direction of the valve 75 has a structure for reciprocating movement of the tension roll 53.

In the present invention, in the strip grinder having the above-described structure, the air pressure detector (69, 70, 71) and the air pipe (65, 66, 67) is formed to connect the branch pipes (62, 63, 64) U-shaped tube 10 installed in the tube 68, the drain tube 11 is connected to the bottom surface of the U-shaped tube 10, the abrasive oil is discharged, the drain tube 11 is provided on one side of the controller (74) The solenoid valve 13 to open / close the drain pipe 11 to open / close by the timer 12 operating for a predetermined time according to the signal of the signal) and the signal detected from the first and third detectors are converted into electrical signals. Press switch (72, 73) for sending to), the relay 14 to detect the operation cycle of the direction switching valve 75 operated by the second detector (70) and sends the signal to the controller (74) .

With the above structure, if the abrasive oil is introduced into the connecting pipe 68 through the air sensor sphere (65, 66, 67), the controller 74 through the relay 14 and the press switch (72, 73) And the controller 74 operates the timer 12 to turn on the solenoid valves 13 installed in the drain pipes 11 so that the drain pipes 11 are opened and accumulated in the U-shaped pipes 10. Abrasive oil will be discharged.

This saves the trouble of having to maintain the air pressure detector to remove the abrasive oil.

Hereinafter will be described with reference to the installation state according to an embodiment of the present invention.

As shown in FIG. 1 and FIG. 2, the air pipe 61 is installed inside the housing 15 fixed to the side of the tension roll 53 and the support bracket 55, and formed on the pipe 61. Three branch pipes 62, 63 and 64 are formed at regular intervals along the longitudinal direction of the pipe 61 so that the extension lines between the branch pipes 62, 63 and 64 are perpendicular to the rotational direction of the polishing belt 54. It is supposed to be.

Each branch pipe (62, 63, 64) is formed with air sensor holes (65, 66, 67) through which air is discharged to the front surface of the air through the air sensor holes (65, 66, 67) outside the housing (15) Each branch pipe (62, 63, 64) is connected to each detector (69, 70, 71) through a connecting pipe (68).

Here, each branch pipe is referred to as a first branch pipe 62, a second branch pipe 63, and a third branch pipe 64 from the left side of the drawing for convenience. 2, 3 air sensor sphere (65, 66, 67) and the first, second, third detector (69, 70, 71).

On the other hand, the U-shaped tube 10 is installed in the connecting tube 68 bar, cutting the connecting tube 68 is fixed to the respective ends of the U-shaped tube (10) by cutting the U-shaped tube ( The curved part of 10) should face downward. At this time, the connecting structure uses a conventional connecting means such as a nibble.

A drain pipe 11 through which abrasive oil is discharged is connected to the curved portion of the U-shaped pipe 10, and a solenoid valve 13 for opening and closing the drain pipe 11 is provided on one side of the drain pipe 11.

In addition, a tank 20 for storing abrasive oil discharged through the drain pipe 11 is installed at the front end of the drain pipe 11.

Here, the first detector 69 and the third detector 71 are controllers through the press switches 72 and 73 for converting the air pressure sensed by the detectors 69 and 71 into electrical signals through the connecting pipe 68. A timer 12 for controlling the operation time of the solenoid valve 13 between the controller 74 and the solenoid valve 13 turned on / off by the electrical signal of the controller 74. Install.

In addition, on the air pipe 61 to which air is supplied, a separate solenoid valve 13 operated by a signal of the controller 74 is installed to block the air flowing into the pipe 61.

The second detector 70 opens and closes a valve (not shown) in itself according to the pressure elevation of the hydraulic oil through the connecting pipe 68 and opens the direction switching valve 75 connected to the detector 70 by a pneumatic line. Get it working.

Here, the hydraulic cylinder 58 for rotating the bracket 55 on which the tension roll 53 is supported about the shaft 57 is provided with the direction switching valve 75 on the hydraulic line connected to the chamber. The direction of the pressure oil flowing into each chamber of the cylinder 58 is changed by the operation of the direction switching valve 75.

Here, reference numerals 77 and 78 are tanks in which a hydraulic pump for applying pressure oil and a pressure oil to be drained are stored.

Hereinafter will be described the operation of the abrasive removal apparatus according to the present invention.

Referring to the case in which the strip 100 grinder operates normally, the grinding belt 54, which is caught and rotated by the tension roll 53 and the contact control 52, has its front end located in the housing 50 in the longitudinal direction. The first air sensor unit 65 is always open, and the third air sensor unit 67 passes through the first air sensor unit 65 and the third air sensor unit 67. 54 is always blocked, and the second air sensor sphere 66 is opened and closed periodically by the polishing belt 54 which is tracked while reciprocating the two air sensor spheres 65 and 67.

Here, when the polishing belt 54 blocks the first air sensor opening 65 beyond the tracking range, or when the abrasive oil flows into the first air sensor opening 65, the first air sensor through the air pipe 61. The air discharged to the sphere 65 is blocked by the polishing oil or the polishing belt 54 and is prevented from being discharged.

Therefore, the air on the air pipe 61 flows into the first detector 69 through the connecting pipe 68 connected to the branch pipe 62, so that the first air detector 69 detects the increase in the air pressure. do.

The detected air pressure is input to the controller 74 through the press switch 72 which converts it into an electrical signal, and the controller 74 confirms that an abnormality has occurred in the first air sensor sphere 65 and polishes it. While the belt 54 is stopped, the timer 12 is operated to operate the solenoid valve 13 provided on the drain pipe 11 for the time set in the timer 12 to operate the drain pipe 11. ) Is opened.

Therefore, the abrasive oil introduced through the first air sensor mechanism 65 is to be discharged to the tank 20 through the drain pipe 11 through the connecting pipe 68 and the U-shaped pipe 10.

That is, when the polishing belt 54 is out of the tracking range, the system can be stopped and the operator can rearrange the position of the belt 54, and the polishing flowed into the connecting pipe 68 through the first air sensor port 65. The oil can be discharged quickly.

And, the third air sensor sphere (67) is located inside the polishing belt (54) and is always blocked by the inner surface of the polishing belt (54), so that the polishing belt (54) leaves the normal tracking range and is When the 3 air sensor opening 67 is opened, the air introduced through the air pipe 61 exits through the third air sensor opening 67, and thus the third branch pipe 64 and the connecting pipe 68. Through the pressure of the air flowing into the third detector 71 is lowered.

Therefore, the pressure drop sensed by the third detector 71 is applied to the controller 74 through the press switch 73 which converts it into an electrical signal, which is already mentioned in the first detector 69. Similarly, the system is stopped and the timer 12 is operated. Accordingly, the solenoid valve 13 is operated for the time set in the timer 12 so that the abrasive oil is discharged to the tank 20 through the drain pipe 11. It will be.

On the other hand, the second air sensor sphere 66 should be blocked or opened at regular intervals. First, when the tracking of the polishing belt 54 is normally performed, looking at the operation process, the second air sensor sphere 66 is tracked polishing As the belt 54 reciprocates between the first air sensor sphere 65 and the third air sensor sphere 67, it is periodically opened or blocked.

Accordingly, when the second air sensor opening 66 is opened, the air pressure flowing into the pipe 61 is immediately discharged through the second air sensor opening 66 and sent to the second detector 70. When the second air sensor mechanism 66 is lowered and blocked by the polishing belt 54, the air pressure of the detector 70 is increased, and the detector 70 opens and closes a valve installed therein according to this pressure change. While the air is applied to the direction switching valve 75 to operate the direction switching valve 75 to switch the direction of the hydraulic pressure flowing into the hydraulic cylinder 58 through the valve 75.

Therefore, while the hydraulic cylinder 58 moves in and out, the tension roll 53 connected to the hydraulic cylinder 58 reciprocates about the shaft 57, and the polishing belt 54 fitted to the tension roll 53 is rotated. Will be tracked from side to side.

Here, when the abrasive oil flows into the second air sensor sphere 66 and the air sensor sphere 68 is blocked, the second detector 70 even when the air sensor sphere 68 is not blocked by the polishing belt 54. High air pressure is always applied.

Therefore, since the valve inside the detector 70 is always open, it is fixed in one direction because the direction of the diverter valve 75 connected to the detector 70 through the pneumatic line cannot be switched. Accordingly, the direction of the hydraulic line supplied to each chamber of the hydraulic cylinder 58 for reciprocating the tension roll 53 is not changed, and the hydraulic cylinder 58 cannot expand and contract.

On the other hand, the relay 14 installed in the direction switching valve 75 is to detect that the air is periodically sent to both ends of the direction switching valve 75 through the detector, as described above by the hydraulic oil inflow When the operation of the cylinder 58 is stopped, it is detected that the operation of the direction switching valve 75 is stopped by the relay 14 installed in the direction switching valve 75, and the relay 14 transmits the signal to the controller 74. ) Is applied.

Therefore, the controller 74 checks that an abnormality has occurred in the second air sensor mechanism 66 and operates the timer 12 so that the solenoid installed on the drain pipe 11 for the time set in the timer 12 is operated. The valve 13 is operated to open the drain pipe 11.

Therefore, the abrasive oil introduced through the second air sensor mechanism 66 is to be discharged to the tank 20 through the drain pipe 11 through the connecting pipe 68 and the U-shaped pipe 10.

As such, the abrasive oil introduced into the second air sensor opening 66 is quickly discharged through the drain pipe 11 so that air flows smoothly to the detector through the second air sensor opening 66 so that the normal polishing belt 54 is tracked. This will be done.

As described above, according to the abrasive removal device of the strip grinder according to the present invention, when the abrasive oil is introduced into the pipe for detecting the air pressure, the air pressure detector must be maintained for removal by automatically detecting and removing it. Less effort

In addition, by stopping the polishing belt operation when the polishing belt is out of the tracking range, there is an effect that can prevent secondary equipment accidents in advance.

Claims (1)

An air supply pipe is installed on the side of the tension roll support bracket, and each of the three branch pipes formed on the air pipe is provided with an air sensor port for discharging air to the polishing belt, and detects the air pressure through the connection pipe. In the strip grinder sensor of the structure connected to the three air pressure detectors, U-shaped pipe is installed in the connecting pipe connecting the branch pipe and the air pressure detector, the drain pipe is connected to the bottom surface of the U-shaped pipe is discharged, the discharge pipe is installed on one side of the drain pipe is a predetermined time according to the signal of the controller Operation of solenoid valve on / off by operating timer to open / close the drain pipe, press switch for converting the signal detected from the first and third detectors into electrical signals and sending it to the controller, and the directional valve operated by the second detector The abrasive removal device of the strip grinder sensor, characterized in that consisting of a relay for sensing the period and sends the signal to the controller.