KR20020052093A - Air sensor of strip grinder - Google Patents

Abstract

PURPOSE: An air sensor in a strip grinder is provided to prevent cutting oil from being introduced into an air hole by installing the air sensor to be rotated about a horizontal axis and vertical axis so as to convert direction according to rotating direction of a grinding belt and an oscillation defect. CONSTITUTION: A strip grinder includes a billy roll on which a strip is disposed at a lower position of a housing. A contact roll is installed on the strip. A tension roll is installed on the housing. The grinding belt is rotated through the contact roll and the tension roll. The tension roll reciprocates about an axis by a hydraulic cylinder operated from signal of the air sensor so as to reciprocate the grinding belt. The air sensor includes a base frame(20) installed to a bracket supporting the tension roll, left and right rotating unit for rotating an air body(10) with an air hole(11) about longitudinal direction of the grinding belt relative to the base frame, and up and down rotating unit for rotating the air body about width direction of the grinding belt relative to the base frame.

Description

Air sensor of strip grinders {Air sensor of strip grinder}

The present invention relates to a strip grinder for polishing a strip that has undergone a stainless annealing pickling process, and more particularly, to an air sensor of a strip grinder which is rotatable up, down, left, and right.

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.

FIG. 1 is a view illustrating a general strip grinder, in which a billy roll 102 in which a strip 150 is placed below a housing 100 is installed, and a drive shaft which is a driving shaft on a strip 150 placed in the billy roll 102 is illustrated. A 104 is provided, and a tension roll 106 is provided on the top thereof, and the polishing belt 108 is rotated over the two rolls 104 and 106.

In addition, a lower portion of the center of the bracket 110 supporting the tension roll 106 is rotatably coupled to the contact control fixing bracket by a shaft.

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

To this end, the bracket 110 supporting the tension roll 106 is provided with an air sensor 120 which is a core equipment of the grinder, the air sensor 120 is reciprocated by the tension roll 106 As the polishing belt 108 oscillates, the air hole on the surface is periodically blocked and opened, and the detector detects a pressure change generated at this time and periodically expands and contracts the hydraulic cylinder of the oscillation means. The air sensor 120 When the abrasive oil flows into the air hole, the air pressure sent to the detector is always constant so that the tension roll cannot be reciprocated.

However, in the conventional structure, as the polishing belt and the air hole are in close contact with each other, the air hole is often clogged by the abrasive oil and the fine swarf on the polishing belt, and in particular, the contact control for rotating the polishing belt for surface roughness. In the case of using the rotating direction of the direction from the forward direction to the reverse direction, the air hole is blocked more frequently by the abrasive oil flowing from the top to the bottom.

Therefore, when the abrasive oil flows into the air sensor port and the connection pipe to the detector is blocked, the air pressure detector must be dismantled by stopping the grinder, thus increasing the amount of work and waste of time due to the operation stop.

Therefore, the present invention is devised to solve the above problems, by rotating the air sensor in the vertical and horizontal directions around the horizontal axis and vertical axis to change the direction according to the rotation direction of the polishing belt or poor oscillation polishing by air hole It is an object of the present invention to provide an air sensor of a strip grinder that can prevent oil from entering.

1 is a perspective view showing a typical strip grinder,

2 is a perspective view showing an air sensor of a strip grinder according to the present invention;

3 and 4 are schematic views showing the operating state of the air sensor according to the present invention.

Explanation of symbols on the main parts of the drawings

10: air body 11: air hole

20: base frame 30: moving frame

31,41: Drive motor 32,42: Screw shaft

33,43: female thread member 34,44: pulse generator

35,45: Sensor 36,46: Sensor

In order to achieve the above object, the present invention, in the air sensor of the strip grinder, the base frame is installed on the tension roll support bracket, and the air body with the air hole formed on the base frame centered on the longitudinal direction of the polishing belt It includes a left and right rotating part for rotating the rotation, and the upper and lower rotating portion for rotating the air body about the width direction of the polishing belt with respect to the base frame.

Therefore, the air hole installed in the air body is always downward downward at an angle with respect to the traveling direction of the polishing belt, thereby preventing the abrasive oil from the polishing belt from flowing into the air hole.

In addition, when the edge of the polishing belt is loose, the air body is rotated to the left and right to adhere to the polishing belt so that accurate detection can be made.

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

1 is a perspective view showing a conventional strip grinder, Figure 2 is a perspective view showing an air sensor of the strip grinder according to the present invention, Figures 3 and 4 is a schematic diagram showing an operating state of the air sensor according to the present invention. Drawing.

According to the above-described drawing, the strip 150 grinder has a billy roll 102 in which the strip 150 is placed in the lower part of the housing, and a contact shaft 104 which is a driving shaft on the strip 150 placed in the billy roll 102. ) Is installed, and the tension roll 106 is installed on the upper portion, and the polishing belt 108 is rotated across the two rolls 104 and 106, and the center of the bracket 110 supporting the tension roll 106 is provided. The lower part is pivotally coupled to the contact control fixing bracket 104 by the shaft, and the tension roll 106 receives the pressure oil in accordance with the signals of the air sensor 120 and the air sensor 120 installed in the bracket 110. It is designed to reciprocate the polishing belt 108 by reciprocating around the axis by a hydraulic cylinder actuated.

Here, the air sensor according to the present invention, in the air sensor 120 of the strip 150 of the above-described structure, the base frame 20, which is installed on the tension roll 106, the support bracket 110, and the base frame ( Polishing the air body 10 with respect to the base frame 20 and the left and right rotating part for rotating the air body 10, the air hole 11 is formed with respect to the 20) in the longitudinal direction of the polishing belt 108 It includes an up and down pivoting unit for rotating around the width direction of the belt 108.

The left and right pivots are pivotally coupled to one side end of the base frame 20 in a vertical direction so that they are placed on the front of the base frame 20 and the air body 10 is connected and installed, and the axis is centered. It includes a drive means for rotating the movable frame 30 with respect to the base frame 20.

The driving means is a drive motor 31 installed at one end of the base frame 20, a screw shaft 32 is installed on the rotation shaft of the drive motor 31, the screw shaft is attached to the side end of the moving frame 30 and the screw shaft It consists of a female screw member 33 is formed with a female screw hole so that the (32).

Here, the pulse generator 34 for detecting the rotation amount of the drive motor 31 connected to the rotating shaft is installed at the rear end of the drive motor 31 to move the moving frame 30 according to the rotation amount of the drive motor 31. It can be detected.

Reference numerals 35 and 36 denote sensing sensors installed on the base frame 20 and sensing pieces installed on the moving frame 30 to limit the moving width of the moving frame 30.

When the driving motor 31 is rotated forward and backward as described above, the moving frame 30 is rotated left and right about an axis of the base frame 20.

On the other hand, the up and down rotation unit is mounted on the front of the air body 10, the sensor block 40 and the sensor block 40 is pivotally coupled to the movable frame 30 in a horizontal direction, the moving frame 30 It comprises a drive means for rotating up and down about the axis of the.

The sensor block 40 is axially coupled to the moving frame 30 at predetermined intervals so as to be sufficiently rotatable with respect to the moving frame 30.

The driving means is a drive motor 41 is installed on the upper portion of the moving frame 30, the screw shaft 42 is installed on the rotary shaft of the drive motor 41, the screw shaft is attached to the upper end of the sensor block 40, It consists of a female screw member 43 formed with a female screw hole so that the 42 is engaged.

Here, the pulse generator 44 for detecting the amount of rotation of the drive motor 41 connected to the rotating shaft is installed at the rear end of the drive motor 41 to move the moving frame 30 according to the amount of rotation of the drive motor 41. It can be detected.

In order to limit the movement width of the sensor block 40, the upper and lower pivots also install a detection sensor 45 on the upper and lower portions of the moving frame 30, and correspond to the detection sensors on the upper and lower portions of the sensor block 40. Install the sensing piece 46.

In the present invention, the air pipe 50 connected to the air hole 11 of the air body 10 to inject air has a structure connected to the air body 10 through the interior of the sensor block 40.

Hereinafter will be described the operation of the present invention.

When operating the drive motor 41 installed on the upper portion of the moving frame 30, the sensor block 40 is engaged with the screw shaft 42 while the screw shaft 42 is installed on the rotary shaft of the drive motor 41 is rotated The female screw member 43 is pulled or pushed.

Therefore, the sensor block 40 in which the female screw member 43 is installed is rotated about the horizontal axis with the moving frame 30 to obtain a proper angle with respect to the rotational direction of the polishing belt 108.

That is, when the polishing belt 108 proceeds downward with respect to the air sensor 120, the driving motor 41 is rotated forward to push the female screw member 43 engaged with the screw shaft 42 to the sensor block. 40 rotates clockwise in FIG.

As the sensor block 40 rotates, the angle of the air hole 11 formed in the air body 10 is inclined downward by a predetermined angle in the horizontal direction, and is directed downward.

As the air hole 11 faces downward in this way, the contact portion between the air body 10 and the strip 150 is moved to the upper part of the air hole 11, so that the strip 150 directly contacts the air hole 11. It will not be in close contact with each other, so that the abrasive oil on the polishing belt 108 can be prevented from entering the air hole 11.

On the other hand, when the polishing belt 108 is rotated in the reverse direction and proceeds upward with respect to the air sensor 120, the drive motor 41 is reversely rotated so as to be engaged with the female screw member 43 on the screw shaft 42. Pull the block 40 toward the drive motor 41.

As the sensor block 40 rotates counterclockwise in FIG. 3, the air hole 11 faces upward, so that the contact portion between the air body 10 and the strip 150 moves downward from the air hole 11. It is moved to prevent the introduction of the abrasive oil through the air hole (11).

As described above, the sensor block 40 is rotated up and down in the rotational direction of the polishing belt 108 to prevent the abrasive oil from flowing into the air hole 11.

On the other hand, when the edge portion of the polishing belt 108 is increased and the adhesion to the air hole 11 is not properly performed, and oscillation is unstable, the air body 10 is moved to the outside to closely adhere to the polishing belt 108. The function of the air sensor can be restored.

That is, when the drive motor 31 installed on the side of the base frame 20 is operated, the screw shaft 32 installed on the rotation shaft of the drive motor 31 is rotated, the female screw member engaged with the screw shaft 32 Push (33).

Therefore, as shown in FIG. 4, the moving frame 30 provided with the female screw member 33 is rotated about the inner vertical axis to be pushed toward the polishing belt 108, thereby providing an air body 10 installed in the moving frame 30. ) Is in close contact with the inner surface of the loosened polishing belt (108).

As the air body 10 is in close contact with the polishing belt 108, the sensing operation through the air hole 11 is smooth, and thus the oscillation operation of the polishing belt 108 can be performed properly.

According to the air sensor of the strip grinder according to the present invention as described above, there is an effect that can be prevented as much as the abrasive oil flows into the air hole of the air sensor.

In addition, there is an effect that can reduce the oscillation failure of the polishing belt to prevent degradation of work productivity due to belt breakage or departure and fire occurrence.

Claims (3)

In the air sensor of the strip grinder, A base frame installed on the tension roll support bracket; Left and right pivots for rotating the air body in which the air holes are formed in the base frame about the longitudinal direction of the polishing belt; An up and down pivoting portion for rotating the air body with respect to the base frame in the width direction of the polishing belt; Air sensor of the strip grinder comprising a. According to claim 1, wherein the left and right pivots are pivotally coupled to the one end of the base frame in a vertical direction to be placed on the front of the base frame and the air body is connected to the drive frame is installed on the one end of the base frame; And a screw shaft installed on the rotating shaft of the drive motor, and a female screw member attached to the side end of the moving frame and having a female threaded hole to engage the screw shaft. According to claim 1, wherein the upper and lower rotating parts are mounted on the front of the air body and the sensor block is pivotally coupled to the moving frame in a horizontal direction, the drive motor is installed on the upper portion of the moving frame, and the rotation shaft of the drive motor Screw shaft to be installed, the air sensor of the strip grinder comprising a female screw member is attached to the upper end of the sensor block and the female screw hole is formed to engage the screw shaft.