JPH04223854A - Polishing device for correction roll - Google Patents

Abstract

PURPOSE:To achieve the easy and quick change of a polishing material, as well as to make the polishing material freely movable by following the surface of a correction roll. CONSTITUTION:An air cylinder 36 arranged with abrasives 58 detachably is pivotaly supported freely, revolvably, and horizontally on the support member 26 moved in parallel to the rotating shaft of a correction roll 18. The abrasives 58 are moved by following the roll surface, by revolving the air cylinder 36 for the support member 26, with the support member 26 being moved in the state of the abrasives 58 being press-fitted to the correction roll 18 surface. Also, the abrasives 58 can be changed in the state of its facing to the external part of the device.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] This invention applies to a straightening machine that straightens a material to be straightened by passing it between straightening rolls. The present invention relates to a polishing device that can reliably remove scratches by polishing and also allows the abrasive used for polishing the roll surface to be easily and quickly replaced.

0002

BACKGROUND OF THE INVENTION In the process of manufacturing round bars, steel pipes, etc. having desired shapes and dimensions by drawing or the like, defects such as wire curling and bending are generally likely to occur in the resulting members, such as round bars and steel pipes. As a device for correcting defects such as wire curls and bends, a roll-type straightening machine in which a straightening roll with a barrel-shaped surface and a straightening roll with a drum-shaped surface are disposed facing each other, for example, is suitably used. That is, in this straightening machine, a pair of straightening rolls are rotatably disposed across a pass line of a member such as a round bar (hereinafter referred to as "material to be straightened") having defects such as curls and bends. The straightening rolls are positioned so as to intersect with each other at a predetermined angle with respect to the pass line, and the material to be straightened is supplied between the two rolls, which are rotated in opposite directions by an external drive source, while being pinched here. It is sent forward, and in this process, the wires and bends in the material are straightened.

[0003] With the use of the roll type straightening machine, it is inevitable that the surface of the straightening roll will have scratches due to biting of the material to be straightened and scales etc. will be attached due to burn-in, and this will cause the material to be straightened to become It is a cause of injury. Further, due to long-term operation, the surface of the straightening roll is locally worn, and if this is left untreated, there is a problem that the material to be straightened cannot be properly straightened. Therefore, by periodically polishing the surface of the straightening roll, a method has been adopted in which scratches and scales are removed and the locally worn portions and other surfaces are smoothed.

[0004] As an apparatus for polishing the straightening roll of the straightening machine, there is, for example, the invention ``Straightening roll polishing apparatus for round bar straightening machine'' disclosed in JP-A-59-144526. This polishing device is equipped with a sliding body that is movable back and forth on a guide shaft parallel to the axis of the straightening roll, and the sliding body rotates in a fixed direction around a rotating shaft in which a left helical groove and a right helical groove are formed. It is configured to move by. Further, a pneumatic cylinder is disposed inside the sliding body, and the abrasive material disposed at the tip of the piston rod of the cylinder is brought into pressure contact with the surface of the straightening roll by the pneumatic bias of the cylinder. In other words, the surface of the rotating straightening roll is polished by moving the sliding body along the guide shaft while the abrasive material is pressed against the surface of the rotating straightening roll at a predetermined pressure.

[0005]

[Problems to be Solved by the Invention] The polishing device according to the previously-mentioned application is configured so that the abrasive material disposed on the piston rod is brought into pressure contact with the surface of the straightening roll by energizing the pneumatic cylinder. There is. As a result, when the distance from the sliding body to the surface of the straightening roll changes, the piston rod moves back and forth accordingly, and the abrasive material is always pressed against the surface of the straightening roll. In this case, since the surface of the straightening roll is formed into a barrel-like convex shape or a drum-like concave shape as described above, the abrasive material moves linearly forward and backward in a direction intersecting the axis of the straightening roll. The polished surface (the surface facing the straightening roll) and the roll surface are not necessarily parallel to each other. In other words, since the abrasive material comes into contact with the curved roll surface only at points or lines, the abrasive material may wear unevenly and need to be replaced in a short period of time, and it is difficult to ensure reliable polishing of the straightening roll. The shortcomings that make it impossible to do so are pointed out.

[0006] Furthermore, since the abrasive material is a consumable item, it is necessary to replace it when it wears out with use. However, in the polishing apparatus, the abrasive material is disposed on the side facing the straightening roll, so replacing the abrasive material requires extremely complicated work in a narrow space. Furthermore, due to this complicated work, it takes a long time to replace the bar, which causes a serious problem of lowering the overall efficiency of the production line for round bars and the like.

[0007]

[Object of the Invention] In view of the problems inherent in the above-mentioned straightening roll polishing device, the present invention has been proposed to suitably solve the problem. It is an object of the present invention to provide a polishing device which can be freely moved to achieve reliable surface polishing of a straightening roll and which can easily and quickly replace the polishing material. Another object of the present invention is to provide a partial polishing device capable of polishing and removing scratches, scale, etc. locally generated on a correction roll in a short time.

[0008]

[Means for Solving the Problems] In order to overcome the above-mentioned problems and achieve the intended purpose, the present invention provides straightening rolls that are arranged parallel to each rotating axis of the straightening rolls that are arranged opposite to each other across the pass line of the material to be straightened. A drive shaft is connected to a drive source and rotated, and a guide shaft is arranged parallel to and spaced apart from the drive shaft. The device includes a main body to be moved, and an abrasive material that is removably disposed on an air cylinder provided in the main body of the device and that moves forward and backward with respect to the straightening roll as the air cylinder is biased in the forward and reverse directions. In a polishing device that polishes the surface of the straightening roll by reciprocating the device main body along the two axes while pressing the abrasive material against the surface of the straightening roll under the bias of Protruded,
A pivot shaft that rotatably supports the air cylinder in a substantially horizontal direction, and a pair of regulating members disposed on a surface of the air cylinder facing the apparatus main body and spaced apart by a predetermined distance in the moving direction of the main body. and a regulation that is removably disposed on the surface of the device main body facing the air cylinder and that normally protrudes between the two regulation members to regulate the rotation angle of the air cylinder between the two regulation members. The air cylinder is configured to include a pin, and the air cylinder is configured to allow free rotation by recessing the restriction pin from between both the restriction members.

[0009] In order to achieve the above-mentioned other object, another invention of the present application includes guide shafts disposed parallel to the rotational axes of the straightening rolls that are arranged opposite to each other across the pass line of the material to be straightened;
A device body is inserted and supported by the guide shaft so as to be reciprocally movable, and a polishing device is removably disposed on an air cylinder provided in the device body, and moves forward and backward with respect to the straightening roll as the air cylinder is biased forward and backward. In the polishing device, the polishing device includes a screw shaft arranged parallel to the guide shaft and screwed into the device main body, and a screw shaft connected to the screw shaft and rotating the screw shaft in forward and reverse directions. a reverse motor, a control means for controlling forward/reverse drive of the forward/reverse motor, a pivot shaft vertically protruding from the device body and rotatably supporting the air cylinder in a substantially horizontal direction; A pair of regulating members are disposed on the surface of the air cylinder facing the device main body, spaced apart by a predetermined distance in the direction of movement of the main body, and a pair of regulating members are disposed on the surface of the device main body facing the air cylinder so as to be freely retractable. comprises a regulating pin that protrudes between the two regulating members, regulates the rotation angle of the air cylinder between the two regulating members, and allows the air cylinder to freely rotate when retracted; While pressing the abrasive material against the surface of the straightening roll under the bias of It is characterized in that it is configured to perform surface polishing of the straightening roll by reciprocating along the guide shaft.

0010

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a preferred embodiment of the straightening roll polishing apparatus according to the present invention will be described below with reference to the accompanying drawings.

(Regarding the first embodiment) FIG. 1 is a longitudinal cross-sectional view of a polishing apparatus according to a preferred first embodiment of the present invention, and FIG.
FIG. 2 is a front view of a straightening machine that employs this polishing device. In the figure, straightening rolls 16 and 18 are rotatably disposed in a machine frame 12 of a straightening machine 10, vertically facing each other with a pass line of a material to be straightened 14 in between. A straightening roll 16 disposed above with the pass line in between has a barrel-shaped concave outer surface, and a straightening roll 18 disposed below.
The outer surface is shaped like a convex drum (Figure 3). Note that in the combination of the straightening rolls 16 and 18, the shapes of the upper and lower rolls may be reversed. And both straightening rolls 16, 18
are driven to rotate in opposite directions by an external drive means (not shown), and by passing the material 14 between the two straightening rolls 16 and 18, the material 14 can be straightened as described above. It will be done.

Straightening rolls 16 and 18 in the straightening machine
A polishing device 20 for polishing the surfaces of the rolls 16 and 18 is disposed adjacent to the rolls 16 and 18, respectively. This polishing device 2
Since the configuration of 0 is vertically symmetrical, in this specification, only the polishing device 20 provided on the lower straightening roll 18 will be explained, and the upper polishing device 20 will be indicated with the same reference numerals. .

As shown in FIG. 3, the machine frame 12 of the straightening machine 10 has a guide shaft 2 parallel to the rotating shaft 22 of the straightening roll 18.
4 is disposed, and a support member 26 forming the main body of the polishing device 20 is slidably disposed on the guide shaft 24. Further, a drive shaft 28 is arranged parallel to and spaced apart from the guide shaft 24 by a predetermined distance, and the drive shaft 28 is inserted through the support member 26 . The outer peripheral surface of the drive shaft 28 has a left helical groove 2 as shown in FIG.
8a and the right spiral groove 28b are formed in an intersecting manner, and the claw member 30 disposed inside the support member 26 is connected to either the left or right groove 2.
8a, 28b. Further, the drive shaft 28 is rotationally driven in a fixed direction by a drive motor 32 disposed on the machine frame 12, as shown in FIG.

That is, the drive motor 32 drives the drive shaft 2.
8 in a certain direction, the support member 26 that engages with the grooves 28a, 28b on either the left or right side of the drive shaft 28 via the claw member 30 will be aligned parallel to the drive shaft 28 and the guide shaft 24. Move to. Note that the claw member 30 of the support member 26 is activated when the support member 26 reaches the shaft end of the drive shaft 28.
From the left helical groove 28a to the right helical groove 28b, or the right helical groove 2
The engagement state is switched from the left spiral groove 8b to the left spiral groove 28a. Therefore, simply by rotating the drive shaft 28 in a fixed direction, the support member 26 reciprocates along the drive shaft 28 and the guide shaft 24.

The support member 26 includes, as shown in FIG.
A pivot shaft 34 is disposed vertically between the insertion position of the drive shaft 28 and the guide shaft 24, and its upper end protrudes from the upper surface of the support member 26 by a predetermined height. Projection portion 34a of pivot shaft 34
An air cylinder 36 equipped with a removably replaceable abrasive material 58 is pivotably supported horizontally. The cylinder tube 38 of the air cylinder 36 has a rectangular block shape, and a plate member 40 has a bottom hole 38a formed in the center in the longitudinal direction on the bottom surface, and a through hole 40a coaxial with the bottom hole 38a. has been fixed. Then, the protruding portion 34a of the pivot shaft 34 is inserted into the through hole 40a and the bottomed hole 38a of the plate member 40, and the cylinder tube 38 is configured to be horizontally pivotable about the pivot shaft 34. This results in
As will be described later, when the support member 26 is moved while the abrasive material 58 disposed in the air cylinder 36 is in pressure contact with the surface of the straightening roll 18 having a convex surface, the air cylinder 36 and the abrasive material 58 rotate. As a result, the polishing surface of the polishing material 58 can always be kept parallel to the surface of the straightening roll 18 (see FIGS. 7 and 8).

As shown in FIG. 5, a pair of regulating members 62, 62 are disposed on the rear bottom surface of the cylinder tube 38 of the air cylinder 36, spaced apart by a predetermined distance in the direction of movement of the supporting member 26. The support member 26 also includes a regulation pin 64 that can be retracted between the regulation members 62 and 62.
is disposed, and the upper end 64a of the regulating pin 64 normally protrudes between the regulating members 62, 62 due to the elasticity of the compression spring 66 (see FIG. 4). That is, in the air cylinder 36, the regulating members 62, 62 are connected to the regulating pin 6.
It is set to rotate horizontally within the range of contact with 4. Note that the restriction pin 64 is configured to
It also has the function of preventing the abrasive material 58 from separating from the surface of the straightening roll 18 by coming into contact with either the left or right regulating member 62 to prevent rotation.

The lower end 64b of the regulating pin 64 protrudes downward by a predetermined length from the bottom surface of the support member 26, and by pulling the lower end 64b downward, the upper end 64a can be moved downward from the top surface of the support member 26. It is becoming more and more immersive. Therefore, at this time, the air cylinder 36 can be rotated 360 degrees, and the attachment part of the abrasive material 58 disposed in the cylinder 36 can be directed to the outside of the straightening machine 10 (see FIG. 10).

As shown in FIGS. 1 and 4, a piston rod 42 that moves forward and backward in a direction intersecting the pivot shaft 34 is disposed inside the cylinder tube 38, and the piston rod 42 is connected to the cylinder. Due to the elasticity of the compression spring 44 inserted into the tube 38, the tube 38 is always biased in a direction to be drawn into the tube. Furthermore, an air supply pipe 45 led out from an air supply source (not shown) is connected to the bottom side of the cylinder tube 38, and by supplying air into the cylinder tube 38 through the supply pipe 45,
The piston rod 42 is configured to be biased in the direction of protruding from the cylinder tube 38 (see FIG. 6).

At the tip of the piston rod 42, as shown in FIG.
As shown in the figure, the L-shaped lower claw 46
a, and this lower claw 46 connects to the piston rod 4.
It is designed to move forward and backward in unison with 2. Lower claw 46
A toothed portion 46c is formed on the upper surface of the horizontal portion 46b extending forwardly over the entire length thereof in the longitudinal direction. Further, a protrusion 46d is protruded from the upper end of the vertical portion 46a of the lower claw 46, and the upper claw 48, which is formed in a U-shape in plan, holds the protrusion 46d between its arms 48a, 48a. The arm portions 48a, 48a and the protrusion 46d are rotatably supported via pins 50, 50 (see FIG. 10).

As shown in FIG. 4, a long groove 38b parallel to the piston rod 42 is formed on the upper surface of the cylinder tube 38 of the air cylinder 36, and a key 52 is slidably inserted into the long groove 38b. . The tip of the key 52 is bolted to the upper surface of the protrusion 46d of the lower claw 46, and the key 52 functions as a guide for the lower claw 46, which moves as the piston rod 42 moves forward and backward. Also,
A presser foot 5 is attached to the tip of the key 52 and extends above the upper claw 48.
4 is rotatably pivoted, and this presser foot 54 is configured to be screwed onto the upper pawl 48 via a thumbscrew 56. That is, by screwing the thumbscrew 56 into the upper claw 48, the upper claw 48 is fixed to the lower claw 46 without rotation, and by removing the thumbscrew 56 from the upper claw 48, the upper claw 48 is fixed. It is designed to rotate relative to the lower claw 46. Note that a tooth portion 48b is formed on the bottom surface of the upper claw 48 in correspondence with the tooth portion 46c formed on the lower claw 46, and both tooth portions 46c, 48b are formed on the bottom surface of the upper claw 48.
The abrasive material 58 and the mounting head 60 are held between them.

The mounting head 60, which is detachably attached between the upper claw 48 and the lower claw 46, is formed in a convex shape, and an abrasive material 58 such as sandpaper is removably wrapped around the outside of the protrusion. ing. That is, as shown in FIG.
8 as well as both teeth portions 48b, 4 in the upper and lower claws 48, 46.
It is mounted in such a way that it cannot be removed by being clamped by 6c. Further, the abrasive material 58 can be removed together with the mounting head 60 by removing the thumbscrew 56 screwed into the upper claw 48 and rotating the upper claw 48 upward, as shown in FIG. Note that as the material for the mounting head 60, an elastic material such as rubber is preferably used.

(Operation of the first embodiment) Next, the operation of the polishing apparatus according to the first embodiment will be described with respect to the polishing apparatus for polishing the lower straightening roll 18. Upper and lower straightening rolls 16
, 18, if the straightening operation is carried out for a long period of time, the surface of the straightening roll 18 (16) will be scratched or scale will adhere, which will damage the surface of the material to be straightened 14. This may make it impossible to make accurate corrections. In this case, while the straightening roll 18 is being rotated, air is supplied to the air cylinder 36 of the polishing device 20 to cause the piston rod 42 to protrude toward the straightening roll 18, as shown in FIG. The rod 42 stops with the abrasive material 58 disposed at its tip in contact with the surface of the straightening roll 18. Note that air at a required pressure is always supplied to the air cylinder 36 to press the abrasive material 58 against the surface of the straightening roll.

Next, when the drive motor 32 is driven to rotate in a certain direction, the drive shaft 28 connected to the motor 32 rotates in a predetermined direction, and a claw is formed in either the left or right helical grooves 28a, 28b of the drive shaft 28. Support member 26 engaged through member 30 moves parallel to drive shaft 28 and guide shaft 24 . In this case, since the surface of the straightening roll 18 is formed into a drum-like convex shape, the distance from the support member 26 to the roll surface changes as the support member 26 moves. However, since the piston rod 42 is always urged in the protruding direction by air, the rod 42 moves as the distance changes, so that the abrasive material 58 is always kept on the surface of the straightening roll 18. is pressed against.

Furthermore, since the air cylinder 36 is horizontally pivotably supported relative to the support member 26, as the support member 26 moves, the air cylinder 36 and the polishing The abrasive material 58 rotates, and the abrasive material 5
8 can be kept parallel to the surface of the straightening roll 18. Therefore, the entire polishing surface of the polishing material 58 can polish the roll surface, effectively preventing uneven wear of the polishing material 58, and reliably polishing the straightening roll 18. Note that when the straightening roll 16 having a barrel-like concave shape disposed above the straightening machine 10 is polished by the upper polishing device 20, the polishing surface of the abrasive material 58 is similarly always made to follow the surface of the straightening roll 16. In the same way, it is possible to bring the material into pressure contact with the material and achieve reliable polishing.

Next, when the abrasive material 58 is worn out,
It is necessary to replace the abrasive material 58 with a new abrasive material 58. In this case, first, the regulating pin 64 disposed on the support member 26 is pulled downward, and its upper end 64a is recessed from the upper surface of the support member 26, as shown in FIG. and,
By rotating the air cylinder 36 by 180 degrees, the mounting portion of the abrasive material 58 disposed on the cylinder 36 can be moved to the straightening machine 10.
can be directed outward. In this state, Figure 10
As shown in FIG. 3, the thumbscrew 56 is removed from the upper claw 48, the presser foot 54 and the upper claw 48 are rotated upward, and the abrasive material 5 is removed.
8 is wound around the mounting head 60. Note that the restriction pin 64 automatically returns to its original position due to the elasticity of the compression spring 66 when the downward pulling force is released.

The worn abrasive material 58 is removed, a new abrasive material 58 is wound around the mounting head 60, and with the mounting head 60 placed on the teeth 46c of the lower claw 46, the upper claw 48
When the toothed portion 4b is brought into contact with the upper surface of the mounting head 60 and the thumb screw 56 is screwed into the upper claw 48, the mounting head 60 and the abrasive material 58 are held between the claws 48, 46. Then, after turning the air cylinder 36 by 180 degrees with the regulation pin 64 pulled downward again, the upper end 46a of the regulation pin 64 is made to protrude between the regulation members 62, 62. The replacement of the abrasive material 58 is completed. In this way, since the attachment part of the abrasive material 58 disposed on the air cylinder 36 can be directed to the outside of the straightening machine 10,
The abrasive material 58 can be replaced easily and in a short time.

(Second Embodiment) FIG. 11 shows a polishing apparatus according to a second embodiment, and the basic configuration is the same as that of the apparatus according to the first embodiment. However, as means for moving the support member 26, a screw shaft 68 and a motor 70 capable of forward and reverse rotation are used to drive the screw shaft 68. That is, in the machine frame 12, a screw shaft 68 having a thread groove formed in only one direction is arranged parallel to the guide shaft 24, and the support member 26 slides on the screw shaft 68 and the guide shaft 24. It is freely arranged. screw shaft 6
A motor 70 capable of forward and reverse rotation is connected to 8, and by rotating the motor 70 forward and reverse, the screw shaft 6
8 rotates in forward and reverse directions. This screw shaft 68 is screwed into a screw hole (not shown) formed in the support member 26. Therefore, by rotating the screw shaft 68 forward and backward, the support member 26 is rotated along both shafts 68, 24. Move back and forth.

As shown in FIG. 11, a detection sensor 72 is disposed on the machine frame 12 of the straightening machine 10 and is movable along the surface of the straightening roll 18. It is configured to be able to detect scratches, scale, etc. Based on the detection signal from the detection sensor 72, the forward/reverse motor 70 is driven and controlled to move the polishing device 20 to a predetermined location (a location with scratches or scales) on the straightening roll 18. . Note that as the detection sensor 72, various means such as a vibration type and an optical type can be used.

Here, the polishing apparatus 2 according to the first embodiment
0 is configured to move by the drive shaft 28 in which a left helical groove 28a and a right helical groove 28b are formed, so when the drive motor 32 is driven, the polishing device 20 moves in the helical groove 28a of the drive shaft 28. , 28b reciprocate over the entire length of the formed range. For this reason, it has been difficult to reciprocate and polish only a specific portion of the straightening roll 18.

However, the polishing apparatus 20 according to the second embodiment
Since the polishing device 20 is configured to be moved by a screw shaft 68, the polishing device 20 can be reciprocated within a desired range by driving the forward/reverse motor 70 in forward and reverse directions. As a result, after the polishing device 20 is moved to the area detected by the detection sensor 72, within a predetermined range including the area,
By reciprocating the support member 26, the correction roll 18 can be partially polished. The screw shaft 68 is configured such that its rotational speed is detected by a detection means (not shown) such as an encoder, so that the current position of the polishing device 20 can be constantly monitored.

The method of controlling the forward/reverse drive of the forward/reverse motor 70 to reciprocate the polishing device 20 within a predetermined range is not limited to the method of controlling based on the detection signal of the detection sensor 72. . For example, the support member 2
6 along the screw shaft 68 and the guide shaft 24,
A method of storing the start point and end point of a polishing range in advance in a control means, and controlling the forward/reverse motor 70 based on the value input to the control means when a polishing command is issued;
It is possible to adopt a method in which the position of the polishing device 20, which is determined from the rotational speed of the screw shaft 68, is directly input into the control means as a numerical value for control.

(Operation of Second Embodiment) Next, regarding the operation of the polishing apparatus according to the second embodiment, a case where a straightening roll is partially polished will be described. When the surface of the straightening roll 18 is scratched or scaled by operating the straightening machine 10, the detection sensor 72 first detects the scratched or scaled area. Then, based on the detection signal from the detection sensor 72, the forward/reverse motor 70 is driven in a predetermined direction, and the support member 26 is moved to a predetermined position.

Next, air is supplied to the air cylinder 36 to press the abrasive material 58 disposed on the piston rod 42 against the surface of the straightening roll 18. In this state, the straightening roll 18 can be partially polished by driving the forward/reverse motor 70 forward/backward to reciprocate the support member 26 within a predetermined range. Then, when the polishing is finished,
When the air supply to the air cylinder 36 is stopped, the piston rod 42 is retracted into the barrel under the elastic action of the compression spring 44, thereby separating the abrasive material 58 from the roll surface.

[0034]

As explained above, according to the straightening roll polishing device according to the present invention, the air cylinder for moving the abrasive material forward and backward with respect to the straightening roll is rotatably supported with respect to the main body of the device. Therefore, the abrasive material can be moved along the surface of the straightening roll formed in a concave or convex arc shape. This prevents uneven abrasion of the abrasive material and allows the surface of the straightening roll to be reliably polished. In addition, by rotating the air cylinder 180 degrees relative to the main body of the device, the abrasive attachment part can be directed toward the outside of the straightening machine away from the straightening roll, allowing the abrasive to be replaced easily and in a short time. I can do it.

Furthermore, by configuring the main body of the polishing device to be reciprocated by a screw shaft and a reciprocatable motor, the polishing device can be reciprocated within a desired range. It has the advantage that polishing can be carried out in a short period of time.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional front view of a polishing apparatus according to a first embodiment.

FIG. 2 is a front view of a straightening machine equipped with a polishing device according to the first embodiment.

FIG. 3 is a side view of a straightening machine equipped with a polishing device according to the first embodiment.

FIG. 4 is a schematic perspective view showing a longitudinal section of the polishing apparatus according to the first embodiment.

FIG. 5 is a schematic perspective view showing the main parts of the polishing apparatus according to the first embodiment.

FIG. 6 is an explanatory plan view showing a state in which the abrasive material of the polishing device is brought into pressure contact with the straightening roll in the straightening machine equipped with the polishing device according to the first embodiment.

FIG. 7 is an explanatory plan view showing a state in which movement of the polishing device is started in the straightening machine equipped with the polishing device according to the first embodiment.

FIG. 8 is an explanatory plan view showing a state in which the polishing device is reciprocated in the straightening machine equipped with the polishing device according to the first embodiment.

FIG. 9 is a schematic perspective view showing the polishing device according to the first embodiment in a state in which the polishing material is directed toward a straightening roll.

FIG. 10 is a state in which the air cylinder in the polishing apparatus according to the first embodiment is rotated by 180 degrees with respect to the support member;
FIG. 3 is a schematic perspective view showing a state in which the abrasive is replaced.

FIG. 11 is a front view of a straightening machine equipped with a polishing device according to a second embodiment.

[Explanation of symbols]

14 Material to be straightened 16
Straightening roll 18 Straightening roll
20 Polishing device 22 Rotating shaft
24 Guide shaft 26
Support member 28 Drive shaft 28a Left spiral groove 2
8b Right spiral groove 34 Pivot shaft
36 Air cylinder 58 Abrasive material 62 Regulation member 64 Regulation pin
68 Screw shaft 70 Forward/reverse motor
72 Detection sensor

Claims (3)

[Claims] Claim 1: Disposed parallel to each rotating shaft (22) of straightening rolls (16, 18) facing each other across the pass line of the material to be straightened (14), and connected to a drive source (32). A rotating drive shaft (28), a guide shaft (24) arranged parallel to and spaced apart from the drive shaft (28), and a guide shaft (24) inserted and supported by both shafts (28, 24).
) The main body of the device (26) is reciprocated in the axial direction as the
) and an air cylinder (3) provided on this device body (26).
an abrasive material (58) which is removably disposed on the air cylinder (36) and moves forward and backward with respect to the straightening rolls (16, 18) as the air cylinder (36) is biased in the forward and reverse directions; ), the abrasive material (58) is applied to the straightening roll (16).
, 18) while being pressed against the surface of the device main body (26).
A polishing device (20) that polishes the surface of the straightening roll (16, 18) by reciprocating the rollers along the two axes (28, 24), the polishing device (20) protruding perpendicularly from the device body (26); A pivot shaft (34) rotatably supports the air cylinder (36) in a substantially horizontal direction;
A pair of regulating members (62,
62) and the air cylinder (36) of the device main body (26).
), and normally protrudes between the two regulating members (62, 62) to prevent rotation of the air cylinder (36) between the regulating members (62, 62). It consists of a regulating pin (64) that regulates the movement angle, and by inserting the regulating pin (64) between the regulating members (62, 62), the air cylinder (36) is allowed to freely rotate. A polishing device for a straightening roll, characterized by comprising: 2. The drive shaft (28) has a left helical groove (28a) and a right helical groove (28b) formed on its outer circumferential surface, and a claw member (30) provided on the device main body (26) is provided on the left and right sides. 2. The straightening roll polishing device according to claim 1, wherein the rotational direction of the drive shaft (28) is switched by alternately engaging the spiral grooves (28a, 28b) of the drive shaft (28). 3. A guide shaft (24) disposed parallel to each rotating shaft (22) of the straightening rolls (16, 18) facing each other across the pass line of the material to be straightened (14), and the guide shaft. The device body (26) is inserted and supported in a reciprocating manner in (24).
) and an air cylinder (3) provided on this device body (26).
A polishing device (20) comprising an abrasive material (58) which is removably disposed on the air cylinder (36) and moves forward and backward with respect to the straightening rolls (16, 18) as the air cylinder (36) is biased forward and backward.
, a screw shaft (68) disposed parallel to the guide shaft (24) and screwed into the device main body (26); a forward/reverse motor (70) that rotates in forward and reverse directions; a control means (72) that controls forward/reverse drive of the forward/reverse motor (70);
A pivot shaft (34) vertically protruding from the device main body (26) and rotatably supporting the air cylinder (36) in a substantially horizontal direction is connected to the device main body of the air cylinder (36). A pair of regulating members (62, 62) arranged on opposing surfaces with a predetermined distance in the moving direction of the main body (26) appear and retract from the opposing surface of the air cylinder (36) of the device main body (26). freely arranged, always both the above-mentioned regulating members (62, 62)
A regulating pin protrudes between the two regulating members (62, 62) to regulate the rotation angle of the air cylinder (36), and allows the air cylinder (36) to freely rotate when the air cylinder (36) is retracted. (64), and the abrasive material (58) is rolled under the force of the air cylinder (36) by the straightening roll (
16, 18) while being pressed against the surface of the forward/reverse motor (16, 18).
70) in forward and reverse directions based on control commands from the control means (72) to rotate the screw shaft (68) in forward and reverse directions.
A polishing device for a straightening roll, characterized in that the device main body (26) is moved back and forth along a guide shaft (24) to polish the surface of the straightening rolls (16, 18).