JPH05325A - Roll straightening method for long tubular rod and its device - Google Patents

Abstract

PURPOSE:To obtain excellent roundness and straightness by automatically straightening a tublar rod material efficiently without giving flaw when the coil shaped long tublar rod material is sent along the automatic line without cutting it previously to a regular size. CONSTITUTION:Several barrel type skew rolls R1, R2, R3, R4, R5 are arranged freely rotatably around a ratation axis (x-x) in a hollow rotation body D rotting around a feed axis line (0-0) of a material M and a rotary axis line X-X intersects with the axis line (0-0) at a defined angle (theta). When the material M is sent into a hollow rotational body D which can rotate around a feed axis line (0-0), these skew rolls R1-R5 rotate ground the material M receiving the sending action force and revolve at the same time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention straightens various metal withdrawal rods, electric resistance welded pipes, and other long pipe rod materials (hereinafter referred to as "materials" in the present specification) with several sets of hourglass-shaped skew rolls. And a device therefor.

[0002]

2. Description of the Related Art In recent years, the above materials tend to become thinner and thinner, and most of the applications have been processed by automatic line equipment. As for the degree of straightness and straightness, the result is that higher precision is required.

As for the roll type straightening device for straightening the roundness and straightness, as a known example most similar to the present invention, there are JP-A-62-230424 and 62-168.
No. 17 and No. 63-252617 can be mentioned.

[0004]

However, in the straightening machine disclosed in JP-A-62-230424, the straightening rolls (3), (4), (3a), (4a), (3b) and (4) are paired up and down.
Since b) is rotationally driven by the drive devices (10) and (10), and the material to be straightened (9) is also rotated by the rotation, the material to be straightened is cut to a predetermined size. If it is not (9), the corrector cannot be applied.

That is, for example, the straightening machine is automatically lined with a material drawing device, and the long coiled material continuously fed out from the drawing device and transferred is straightened in the transferring process, and the next process is carried out. It is impossible to send it to various processing devices.

Further, in the case of the above-mentioned known invention, a pair of straightening rolls (3), (4), (3a), (4a), (3b) and (4) are arranged one above the other
b) is the convex type (spindle type) (1) and the concave type (hand drum type)
Since it is composed of a pair with (2), a pair of left and right horizontal guide plates (8) and (8) for preventing the to-be-corrected material (9) from jumping out are indispensable. (4
A) (3b) and (4b) drive devices (10) and (10) are required, which causes a problem that not only the size and weight are significantly increased but also the manufacturing cost of the straightening machine is increased.

Further, even if the provisional convex type (1) and the concave type (2) are arranged alternately, and even if the bending force can be applied to the material to be straightened (9) by this, the convex type (1) is covered. Since the surface of the straightening material (9) only makes point contact, it is impossible to efficiently apply the bending force and the clamping force to the entire circumferential surface of the straightened material (9).
On the contrary, the straightening roll (3) (4) (3a) (4a)
When (3b) and (4b) are rotationally driven, there is a high possibility that the surface of the material to be straightened (9) is scratched or a roll mark is given.

Next, in Japanese Patent Laid-Open No. 62-16817, since the straightening rolls (2) of the material to be straightened (P) are all drum-shaped, the horizontal guide plate (8) of the above-mentioned known invention is used.
(8) is unnecessary, and it can be said that the circumferential concave curved surface of the roll (2) makes an apparent upper surface contact with the surface of the material to be straightened (P).

However, since the straightening roll (2) is still driven to rotate, and the material to be straightened (P) also rotates, the long coiled material is still transferred on the automatic line. No correction is possible in the process.

In this regard, the last Japanese Patent Laid-Open No. 63-252617
No. 3, the straightening cylinder (3) rolls on the surface of the round bar (B) according to the progress of the drawing round bar (B) related to the material to be straightened. It can be said that even a round bar (B), which is arranged between the device and the cutting device and is drawn from the coiled material, can be straightened in the process of proceeding on the automatic line.

However, in the case of this known invention, the straightening cylinder (3)
Is hollowed in the shape of a special round-shaped nozzle, and the surface of the round bar (B) is pressed at the convex curved inner peripheral surface that makes point contact with the surface of the round bar (B). It is easy for scratches and roll marks to be given to the surface of the round bar (B). Further, since the straightening cylinder (3) is the above-mentioned nozzle-shaped hollow cylinder and is not provided with its own rotation spindle, it is merely supported by the bearing (19) on its outer peripheral surface.
It is not possible to apply an effective bending force and crushing force to the entire surface of the round bar (B).

Further, the straightening cylinder (3) is a provisional round bar (B).
As the above-mentioned two known inventions, the rotating body (1) is rotationally driven by the rotational drive device (2) even if it is to be rotated by the force applied from the inside as it progresses. Since the straightening cylinder (3) is also given a forced rotational driving force from the outside, so to speak, the straightening cylinder (3) intersects the feed axis (A) of the round bar (B). In combination with being supported by the bearing (19) in the inclined installation state, it does not smoothly rotate. From this point of view, the scratches and roll marks are given, and the bending force and the crushing force become insufficient.

When the lid is closed and the straightening cylinder (3) is revolved by the rotating body (1), the rotation driving device (2) is applied from the outside.
It is a difficult task in terms of design to precisely match the rotational driving force given by the rotation driving force and the feed speed or the feed action force of the round bar (B), which should cause the straightening cylinder (23) to rotate from the inside. That's why.

[0014]

SUMMARY OF THE INVENTION The present invention intends to radically solve these problems, and as a roll straightening method useful for that purpose, the inside of a hollow rotary member that can rotate around the feed axis of the material is used. , A set of drum-shaped skiwl rolls that face each other so as to sandwich the feed axis from above and below are arranged in an array state in which the rotation axis of the drum crosses the feed axis at a certain angle in plan view, and the shaft freely rotates. The surface of the material that is supported and fed into the inside of the hollow rotating body along the feed axis is constrained in a holding state by the circumferential action surface of the squeeze roll that makes surface contact therewith, and the material is held under that state. By advancing the material, the squeeze roll is rotated around the material and revolves around the material at the same time to impart bending force and crushing force to the surface of the material,

Further, as a roll straightening device used for carrying out the above method, a hollow rotating body that is supported in a horizontally installed state on an installation frame so that it can rotate around the feed axis of the material due to its constitution, As a pair of upper and lower pairs that can be moved forward and backward toward the feed axis, and a roll support unit assembled inside the hollow rotary body so that it can rotate integrally with the hollow rotary body that rubs around the feed axis,
It consists of several sets of hourglass-shaped skew rolls which are freely rotatably mounted on their respective roll support units and which are rotatably supported by the rotation axis of the roll axis so as to intersect with the feed axis at a fixed angle in plan view. The surface of the material fed into the inside of the hollow rotating body along the direction is constrained by the circumferential action surface of the squeeze roll in a holding state, and when the material is advanced under that state, the feeding action force is increased. Accordingly, the main feature is that the squeeze roll is designed to be able to impart bending force and crushing force to the surface of the material by rotating around the material and revolving around the material.

[0016]

According to the roll straightening method of the present invention, when the material is advanced inside the hollow rotary member along the feed axis of the material, the hourglass-shaped skew roll receives the feed action force of the material to move the material. It rotates around the surroundings and revolves at the same time, imparting bending and clamping forces to the surface of the material, which does not rotate the material itself, so it is necessary to cut a long coiled material in advance and cut it to a fixed size. In the process of continuous transfer on the automatic line, it is possible to correct with high accuracy without any hindrance, and there is no risk of scratches or roll marks on the material, and its excellent roundness. Degree and straightness can be achieved.

Further, also as a straightening device for carrying out the method, according to the above-mentioned configuration of the present invention, the hollow rotating body is rotatably supported about the feed axis of the material, and is internally provided therein. Since a drum-shaped skewer roll that can rotate together with the skewer roll is assembled via the roll support unit, when the skewer roll receives the feeding force of the material, the hollow rotating body along with the skewer roll follows the periphery of the material. As a result, the surface of the material will not be improperly forcibly applied from the outside, there will be no risk of scratches or roll marks on the surface, and the rotation drive source of the hollow rotating body will be exceptional. You don't even have to equip them.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings. FIGS. 1 to 3 show the whole of a vertical opposed 10-roll straightening device embodied as a preferred embodiment of the present invention. , (D) are hollow rotating bodies of a certain length, (R1) (R2)
(R3) (R4) (R5) is the longitudinal direction (front-back direction)
A total of 5 sets of drum-shaped skew rolls arranged in order in order along (U1) (U2) (U3) (U4) (U
5) is a roll supporting unit for assembling and integrating the five sets of the squeeze rolls (R1) to (R5) inside the hollow rotating body (D), and the material (M) is an arrow (F) in FIG. It is fed so as to pass through the inside of the hollow rotating body (D) from the direction indicated by ().

First, the hollow rotating body (D) comprises a solid rectangular block body (11) and a pair of front and rear hollow support shafts (12) and (13) which continuously and integrally project from both end portions thereof. On the longitudinal center line of the block body (11), the above-mentioned five sets of storage rooms for ski rolls (S1) (S2) (S
3) While (S4) and (S5) are hollowed out in a relatively large circular shape penetrating in the vertical direction and maintaining a constant front-to-back spacing pitch, the storage chambers (S1) to (S5) are adjacent to each other. A relatively small circular inspection window (G
1) (G2) (G3) (G4) are hollowed out in a right-left orthogonal state.

Therefore, as is apparent from FIG. 4, while forming the hollow rotating body (D) from the solid block body (11) having high rigidity, its longitudinal center line is the feed axis (O) of the material (M). As (-O), the material (M) can be fed into and passed through the hollow rotating body (D).
(14) and (15) are material introduction holes and lead-out holes formed through the longitudinal center lines of both support shafts (12) and (13), and communicate with the storage chambers (S1) to (S5). Needless to say.

Then, such a hollow rotating body (D) is placed in a stable horizontal installation state, and a pair of front and rear support shafts (12) are provided.
Both (13) are bearings (16) and (17)
It is rotatably supported on the installation frames (18) and (19). (20) (21) are bearings (1
6) Distance color of (17), (22) (23)
Is a bearing case, and (24) and (25) are bearing cases (22) and (23) of the installation frame (18) (1).
It is a bolt for fixing to 9).

In this case, as suggested from FIGS. 1 to 3, either one of the two support shafts (12) and (13) is extended and the input pulley (2
6) is fitted and integrated. Therefore, the hollow rotating body (D) may be rotationally driven by power-connecting the pulley (26) to a rotary drive motor (28) via a transmission belt (27) or a clutch mechanism (not shown). It is possible.

That is, when the straightening device is used, the starting end portion of the material (M) is introduced into the hollow rotating body (D) through the introduction hole (1).
Only at the beginning of the work of feeding from 4), the hollow rotating body (D) is rotated by the driving force of the motor (28), and as soon as the starting end of the material (M) reaches the outlet hole (15), The hollow rotating body (D) can be automatically stopped by the clutch mechanism. According to this, it can be said that it is more advantageous in that the feeding operation of the material (M) can be performed extremely efficiently and lightly as compared with the method of artificially performing the feeding operation.

Next, the above-mentioned squeeze rolls (R1) to (R
5) A total of 5 sets of roll supporting units (U1)
~ (U5) are all the same, and since each set is made up of a pair of upper and lower units that are the same,
5 and 6, the explanation will be given below with reference to one of the single units, which is a substantially circular cover plate (2) for covering the respective storage chambers (S1) to (S5) for the skiw rolls of the hollow rotating body (D).
9) and a substantially U-shaped roll support frame (30) screwed and fastened to the cover board (29) so as to be able to move back and forth in the vertical direction.

In other words, a plurality of bolt receiving adjustment elongated holes (31) are formed in the peripheral portion of the cover board (29) in a generally radial symmetrical distribution type, and a plurality of bolts penetrating therethrough. By (32), the cover panel (29) causes each of the squeeze roll storage chambers (S) of the hollow rotating body (D).
1) to (S5) are fitted and fixed to the block main body (11) so as to cover.

In particular, the adjustment slot (3) for receiving the bolt is
As is clear from FIG. 5, each of 1) is formed in an arc shape in a plan view, so that the cover board (29) is used as a cover state of each of the ski roll storage chambers (S1) to (S5). When replacing the hollow rotating body (D) with the block body (11), the cover plate (29) is horizontally rotated about its vertical center line (Y-Y) by a certain angle range (α). You can also The constant angular range (α) is
It is preferably set to about 7 degrees.

Reference numeral (33) is a relatively large screw hole formed through the central portion of the cover board (29), and (34) is a cover board (29) facing the ski roll storage chambers (S1) to (S5). Is a groove for receiving a single support frame cut out along the diametrical direction of the disc, and the roll support frame (30) is fitted in the groove (34). As a result, the roll support frame (30) does not rotate relative to the cover plate (29).

Further, (35) is the roll support frame (30).
Is an adjusting screw shaft which is integrally erected vertically from the central part of the cover plate in the vertical direction, and is screwed so as to be able to advance and retreat into a screw hole (33) opened in the center part of the cover plate (29).

That is, a wrench or other rotating operation tool (not shown) is externally locked to the square head (36) of the adjusting screw shaft (35) exposed from the cover board (29). When the adjusting screw shaft (35) is rotated by this, the roll supporting frame (30) only performs an advancing and retreating action along the vertical direction, and each of the material (M) with respect to the feed axis (O-O). Skiroll (R1) ~ (R
The offset amount (L) of 5) can be adjusted to some extent. Reference numeral (37) is a guide gauge for visually observing the degree of adjustment, and is engraved or attached on the surface of the cover board (29). In addition, instead of locking the above-mentioned rotation operation tool,
The turning operation handle may be integrally projected outward from the adjusting screw shaft (35).

Numeral (38) is a pair of bolts for locking and locking the forward / backward acting state of the roll support frame (30), from the outside of the cover plate (29) toward both shoulders of the roll support frame (30). It has been screwed in. And, of course, prior to the advancing / retreating operation of the roll supporting frame (30) by the rotating operation tool or the like, as shown by the chain line in FIG. is there. (39) is a screw hole for receiving the bolt (38), and (40) is a stupid hole.
It is formed to penetrate 9).

Each roll supporting unit (U1) comprising the cover board (29) and the roll supporting frame (30) as described above.
(U5) are storage chambers (S1) to (S5) for the skew roll of the hollow rotating body (D) with the assembly being kept in the assembled state.
Can be stored in and out freely from above and below.

That is, the roll support frame (30) is inserted into each of the squeeze roll storage chambers (S1) to (S5),
With the cover panel (29) in a closed state of the storage chambers (S1) to (S5), the block body (1) of the hollow rotating body (D) is
If you set it to 1) with multiple bolts (32),
The roll support frame (30) has the storage chambers (S1) to (S).
5) It will be correctly put in itself and the work such as assembling, maintenance and inspection can be performed with high efficiency.

The roll supporting units (U1) to (U
5) is a storage unit for each ski roll (S1)-
When a pair of upper and lower pairs is taken for each (S5) and each one is picked up, as suggested from FIGS.
The groove (34) of the upper cover board (29) and the roll supporting frame (30) received by the groove, and the groove (34) of the lower cover board (29) and the roll supporting frame received by it ( 30) and the upper roll support frame (30) and the lower roll support frame (30) are in a relationship of intersecting each other by a constant angle (β) when viewed from above and below. Also face each other so as to sandwich the feed axis (O-O) of the material (M).

In this respect, the constant angle (β) is 9 in both figures.
Although it is shown as 0 degree, this is merely for convenience of simplifying the drawing and does not mean that it is determined as 90 degrees. As will be described later, each squeeze roll (R1)
The constant angle (θ) at which the rotation axis (R-X) of (R5) and the feed axis (O-O) of the material (M) intersect is preferably about 30 degrees, which is twice that of about 60 degrees. Will be determined.

Each of the above-mentioned squeeze rolls (R1) to (R
5) is composed of a pair of upper and lower drum-shaped rolls (41), and the both drum-shaped rolls (41) are attached to the pair of upper and lower roll supporting units (U1) to (U5) facing each other as described above as follows. ing.

That is, since all the hourglass-shaped rolls (41) are the same, in FIG.
Reference numeral 2) is a roll support shaft horizontally fixed and laterally mounted on both legs of the roll support frame (30), and a bearing (4
A drum-shaped roll (41) is loosely fitted through the (3). (44) (45) is the roll support shaft (42)
Bolts for fixing the bolts, which are screwed in from a pair of mutually perpendicular relational directions. (46) is a distance collar of the bearing (43), and (47) is a retaining ring.

When a pair of squeeze rolls (R1) to (R5) consisting of a pair of upper and lower drum-shaped rolls (41) are picked up, an axis line (XX) that rotates around the roll support shaft (42). Are in a relationship of intersecting with each other by a constant angle (γ) when viewed from above and below, and the constant angle (γ) is the above-mentioned upper roll supporting frame (30) and lower roll supporting frame (3).
Needless to say, it is equal to a constant angle (β) intersecting with 0).

Moreover, each of the squeeze rolls (R1) to
The rotation axis (XX) of (R5) is also preferable with respect to the feed axis (O-O) of the material (M) along the longitudinal center line of the hollow rotating body (D) when viewed in the vertical direction. Is about 3
They are also arranged in a directivity state in which they cross at a constant angle (θ) of 0 degree.

However, when the cover plates (29) of the roll supporting units (U1) to (U5) are fitted and fixed to the block main body (11) of the hollow rotating body (D) as described above, they are vertically attached. Since it is designed to be horizontally rotated by a constant angle range (α) of about 7 degrees about the center line (Y-Y), the horizontal rotation operation of the cover board (29) causes
With the angle range (α) as an allowable limit, the above-mentioned constant angle (θ) of 30 degrees can be finely and finely adjusted, and even if the feed rate of the material (M) changes, the material (M) is changed. Since the circumferential action surface of the hourglass-shaped roll (41) can be kept in constant contact with the surface of the drum-shaped roll (41), the state can be checked through the indoor inspection windows (G1) to (G4).

Further, the circumferential action surface of the hourglass-shaped roll (41) is made of the material (M) under the directivity state where it crosses the feed axis (OO) of the material (M) at a constant angle (θ). M)
It always comes into surface contact with the surface of. In other words, the circumferential action surface of the hourglass-shaped roll (41) is not formed by a simple arc or hyperbola, and is a concave curved surface consisting of a special solid curve that does not scratch or roll mark the surface of the material (M). Since the pair of upper and lower parts face each other so as to sandwich the feed axis (O-O) of the material (M), the material (M) can be restrained in a held state. is there.

As a result, each squeeze roll (R1)
The drum-shaped roll (41) of (R5) has its roll support shaft (4
2), the material (M) is hollow along the feed axis (O-O) of the material (M) in combination with being rotatably supported by the roll support frame (30). Rotating body (D)
When the material (M) has no roundness, the drum-shaped roll (41) rotates around the material (M).

Since the roll supporting frame (30) is assembled and integrated with the block body (11) of the hollow rotating body (D) through the cover plate (29), it is integrated with the material (M). When there is no straightness, the drum-shaped roll (41) also revolves around the material (M), and together with this, the hollow rotating body (D) moves the feed axis (O- of the material (M)).
O) as a center, so to speak, it rotates, and in any case, the material (M) does not lack the bending force and the clamping force due to the drum-shaped roll (41), and the surface of the material (M) has scratches or roll marks. It is applied in a very rational manner without any fear of giving.

A total of 5 pairs of squeeze rolls (R1)
The rotation axes (X-X) of the upper drum-shaped rolls (41) in (R2), (R3), (R4), and (R5) are in a parallel state, and the rotation axes (X-) of the lower drum-shaped rolls (41) are the same.
X) also all extend in parallel.
As suggested by.

As described above, in the roll straightening device of the present invention, the drum-shaped skew rolls (R1) to (R5) are made of the material (M).
Of the material (M), it is designed to rotate around the material (M).
The hollow rotating body (D) containing 1) to (R5) is not forcibly rotationally driven from the outside during the correction work of the material (M), and the squeeze roll (M) revolves around the material (M). According to R1) to (R5), so to speak, they are simply followed and rotated from the inside. As a result of preventing the material (M) itself from rotating at all, for example, as shown in FIG. 7, on the automatic line between the drawing device (A) and the various processing devices (B) that are the next steps, the present invention can be used. It is possible to perform straightening and efficient straightening action in the continuous transfer process as it is without the need to insert the roll straightening device of No. 1 and to cut the coiled long material (M) to a predetermined size before cutting. .

That is, when straightening a long material (M) by the straightening device of the present invention, as is clear from FIGS. 8 and 9, the above-mentioned total of 5 sets of hourglass-shaped skiwl rolls (R1).
~ (R5), one set of squeeze rolls (R5) located on the material introduction side of the hollow rotating body (D) and one set of squeeze rolls (R1) also located on the derivation side of In order to use it for centering the positioning of each of them, they are arranged so as to face the feed axis (OO) of the material (M).

Then, a total of three pairs of squeeze rolls (R2), (R3) and (R4) in the remaining middle are used for straightening the material (M), and these are set according to the reference diameter of the material (M) and the feed rate. As shown in FIG. 9, as if the material (M) is meandering, the feed axis (OO) is positioned in a zigzag arrangement state in which the phase is alternately changed in the vertical direction by a constant offset amount (L), and then the above-mentioned arrow is drawn. The material (M) is fed into the hollow rotating body (D) from the direction indicated by (F) along the feed axis (OO). The above material (M)
Since it is long, the lubricating oil may be administered to the hollow rotating body (D) on the introduction side.

At the beginning of the work, the hollow rotating body (D) is moved as described above for a certain time until the starting end of the material (M) reaches the material outlet hole (15) of the hollow rotating body (D). It is rotationally driven by a drive motor (28).
By doing so, since it quickly and smoothly passes to the outlet hole (15), as soon as it passes, the rotational driving force of the hollow rotating body (D) is cut off, and the transmission belt (27) is also removed.
Leave it to that stopped state.

In that case, the above-mentioned squeeze rolls (R1) to
(R5) is the roll support unit (U1) to (U5)
By rotating the adjusting screw shaft (35) of (1) from the outside of the hollow rotating body (D), it is possible to move the adjusting screw shaft (35) in the vertical direction.
5) may face the feed axis (OO) of the material (M) as described above, or slightly adjust the offset amount (L) from the feed axis (OO). You can
Further, the cover board (29) of the roll supporting units (U1) to (U5) is horizontally rotated around its own vertical center line (Y-Y), and then fitted and fixed to the hollow rotating body (D). Because it is made possible, Sukie Roll (R1)
The constant angle (θ) at which the rotation axis (OO) of (R5) intersects the feed axis (OO) of the material (M) is adjusted according to the feed rate of the material (M). can do.

After completion of such preparations, if the material (M) is automatically and mechanically fed at a constant speed, the surface of the material (M) will have the above-mentioned skew roll (R).
1) to (R5) are in full surface contact with the circumferential working surface of the hourglass roll (41), and under the restrained condition held from the up and down direction, the effective bending force is automatically exerted. It receives the clamping force and is corrected with high precision.

That is, during the straightening action, the skew rolls (R1) to (R5) receive the feeding action force of the material (M), and when the material (M) has no roundness, the feeding action is performed. The force alone causes the material to rotate around the material (M) to apply a high-pressure crushing force to the surface without loss, and when the material (M) has no straightness,
Similarly, squeeze rolls (R1) to (R5) are materials (M)
It will revolve around and to give effective bending force to its surface. Due to the superposed or synergistic action of both the movements, the above-mentioned skiw roll (R1)
The required number of (R5) is as small as possible, and the straightening device can be made compact and compact as a whole, and the highly accurate straightening state of the material (M) with excellent roundness and straightness can be efficiently and rationally obtained. Is.

In that case, the hollow rotor (D) is made of the material (M).
Is rotatably supported around the feed axis line (OO) of the above, and it is because no forced rotational driving force is applied from the outside by a motor or the like during the above-mentioned correction action. Like Sukie Roll (R1) ~
(R5) can revolve without any trouble, and as a result, as described above, the special concave curved surface that allows the circumferential working surface of the hourglass-shaped roll (41) to make overall surface contact with the surface of the material (M). The surface of the material (M) can be gracefully polished without any risk of scratches or roll marks on the surface of the material (M).

Further, the squeeze rolls (R1) to (R5) are adapted to rotate and revolve from the inside of the feed axis (OO), so to speak, in conformity with the feed action force of the material (M). In addition to the above bending force and the clamping force for straightening, unreasonable wrong force does not work on the roll supporting units (U1) to (U5) and the hollow rotating body (D), and the durability can be remarkably improved. is there.

1 to 10 show a vertical type opposed 10-roll type straightening device composed of a total of five squeeze rolls (R1) to (R5).
The number of (R5), roll supporting units (U1) to (U5), storage chambers (S1) to (S5), etc., can be freely increased or decreased.

For example, as suggested from FIG. 11 corresponding to FIG. 9, in the case where the number of installed skewer rolls (R1) to (R5) is increased, an arbitrary skewer roll (R3) at an intermediate position is referred to. As if disassembling into a single body,
The plurality of hourglass-shaped rolls (41) may be distributed in a zigzag arrangement state in which they alternately face the surface of the material (M) from the vertical direction. It goes without saying that the single hourglass roll (41) is then offset from the feed axis (OO) of the material (M) by a certain amount (L).

Reference numeral (48) in FIG. 7 is a guide roll (4) for feeding the material, which is arranged on the material introduction side of the straightening device.
9) also suggests a cutter for cutting the straightened material (M) facing the lead-out side.

[0056]

As described above, in the roll straightening method of the present invention, the feed axis (O) is fed to the inside of the hollow rotating body (D) which can rotate around the feed axis (OO) of the material (M). -O)
A pair of drum-shaped squeal rolls (R1) (R2) (R3) (R4) (R5) facing each other so as to sandwich
The feed axis (O-
O) and the feed axis (O-
The surface of the material (M) sent into the inside of the hollow rotating body (D) along (O) is restrained in a holding state by the circumferential action surfaces of the above-mentioned squeeze rolls (R1) to (R5) which are in surface contact with this. At the same time, by feeding the material (M) under the condition, the squeeze rolls (R1) to (R5) are rotated around the material (M) and revolved at the same time.
Since the bending force and the cracking force are applied to the surface of the material (M), there is an effect that all the problems of the prior art mentioned at the beginning can be improved.

That is, the hollow rotating body (D) is rotatably supported about the feed axis (O-O) of the material (M), and the hollow rotating body (D) receives the external force during the straightening operation of the material (M). There is no forcible rotation driving force given by a motor. Then, inside the hollow rotating body (D), roll supporting units (U1) (U2) (U3) (U
4) A drum-shaped skew roll (R1) (R2) (R3) (R4) (R5) that rotates integrally with this via (U5)
Of the feed axis (O-
O) and a fixed angle (θ), and because the shaft is rotatably supported, the feed axis (O)
If the material (M) is advanced to the inside of the hollow rotating body (D) along (-O), the above-mentioned skew rolls (R1) to (R5).
Receives the feed action force of the material (M), revolves around the material (M) and revolves at the same time, and imparts a clamping force and a bending force to the surface without rotating the material (M) at all. Becomes

As a result, the above-mentioned JP-A-62-23 was used.
There is no need to cut the material (M) in advance to a certain length like 0424 and 62-16817,
In the process of transferring the coil-shaped long material (M) along the automatic line, the straightening action can be continuously performed as it is, and the above-mentioned skew roll (R1) can be used.
~ (R5) is composed of one set of drum-shaped rolls (41), and together with holding the surface of the material (M) in the overall surface contact state by its circumferential action surface, the material By applying the above-mentioned cracking force and bending force, it is possible to obtain an excellent straightening condition with a high degree of roundness and straightness reasonably and efficiently, without the risk of scratches or roll marks on the surface of (M). Of.

Further, the roll straightening device used for carrying out the above method is also constructed so as to have a feed axis (O-) of the material (M).
The mounting frame (1
8) A hollow rotating body (D) that is supported on (19) in a horizontal installation state, and a pair of upper and lower pairs capable of advancing and retreating toward the feed axis (OO), and the feed axis ( Roll supporting units (U1) (U2) (U3) (U) assembled inside the hollow rotating body (D) so that they can rotate integrally with the hollow rotating body (D).
4) (U5) and roll supporting units (U1) to
Freely rotate to (U5) and own rotation axis (XX)
Are drum-shaped skewer rolls (R1) (R2) (R3) (R4) (R4) that are axially supported as an array state that intersects with the feed axis (OO) by a constant angle (θ) in plan view.
5), and by the circumferential action surface of the hourglass-shaped squeeze rolls (R1) to (R5) that are in overall surface contact with the surface of the material (M), hold the material (M) from the vertical direction. Since it is designed to be restrained, the horizontal guide plates (8) and (8) for preventing pop-out, which are described in JP-A No. 62-230424, which is mentioned at the beginning, are completely unnecessary, and the JP-A No. 63-2
Even if compared with No. 52617, there is no fear of giving scratches or marks such as roll marks on the surface of the material (M), and the hourglass-shaped roll (41) forming each set of the above-mentioned squeeze rolls (R1) to (R5) But its roll support unit (U1)
(U2) (U3) (U4) (U5) roll support frame (3
In addition to the fact that the roll support shaft (42) fixed horizontally to (0) supports the roll support shaft (42) so that it can rotate freely, the bending force and the clamping force can be effectively applied to the surface of the material (M) without loss. Can be given to.

Further, the above-mentioned drum-shaped ski-roll (R1)-
The roll support units (U1) to (U5) of (R5) are
The material (M) has a set that faces the feed axis (OO) from above and below, and is assembled inside the hollow rotating body (D) so that the feed axis (OO) can be moved back and forth. Therefore, the squeeze roll (R) for the material (M) is
The offset amount (L) of 1) to (R5) can be freely adjusted one by one by advancing and retracting the roll supporting units (U1) to (U5).

As described above, the hollow rotating body (D) is installed horizontally on the installation frames (18) and (19) so that the hollow rotating body (D) can rotate around the feed axis (OO) of the material (M). Since it is not supported by the external force of the motor (or the like) during the straightening operation of the material (M), the above-mentioned JP-A-63 No rotation drive device (2) like No. 252617 is required at all, and it is necessary to consider the rotation drive force from the outside by the motor, of course, because the entire orthodontic device can be inexpensively made compact and compact. Therefore, the feed rate of the material (M) can be freely selected without any design restriction.

In particular, if the structure described in claim 3 is adopted, the hollow rotating body (D) can be formed with high rigidity, and therefore, the opposing strength on the correcting action by the above-mentioned skew rolls (R1) to (R5) (above-mentioned). The skid roll (R
1) to (R5) and roll support units (U1) to (U
In addition to improving the durability of 5), Sukiyu Roll (R
The constant angle (θ) at which the rotation axis (XX) of (1) to (R5) intersects the feed axis (OO) of the material (M) can be more finely adjusted according to the change of the material feed rate. There is also an effect.

Further, if the structure according to claim 4 is adopted, at the beginning of the straightening work, the work of feeding the starting end portion of the material (M) into the hollow rotating body (D) is performed.
It can be performed extremely smoothly and efficiently, and it also has the effect of saving labor and time due to manual work, which is extremely convenient in practice.

[Brief description of drawings]

FIG. 1 is a side view of a roll straightening device according to the present invention.

FIG. 2 is a plan view showing a part of the correction device in a cutaway manner.

FIG. 3 is a partially cutaway side view showing the hourglass-shaped skew roll of the straightening device in an orthogonal state.

FIG. 4 is a cross-sectional plan view showing a hollow rotating body of the straightening device in an extracted manner.

FIG. 5 is an enlarged plan view showing a part of FIG. 2 extracted.

6 is a partial cross-sectional view taken along line 6-6 of FIG.

FIG. 7 is an explanatory diagram showing a usage state of the correction device.

FIG. 8 is a plan view showing the correction effect of the material by the hourglass-shaped square roll.

FIG. 9 is a side view showing the correction effect of the same material.

FIG. 10 is a front view showing a state in which a material is sandwiched by a drum-shaped skew roll.

FIG. 11 is a side view showing a material correcting action of a modified example corresponding to FIG.

[Explanation of symbols]

(R1) (R2) (R3) (R4) (R5) -Skyew Roll (S1) (S2) (S3) (S4) (S5) -Storage Room (U1) (U2) (U3) (U4) (U5) -Roll support unit (G1) (G2) (G3) (G4) -Indoor inspection window (D) -Hollow rotor (OO) -Feeding axis of material (XX) -Roll Axis of rotation (Y-Y), vertical center line (L), offset amount (θ), constant crossing angle (11), block body (12), hollow spindle (13), hollow Support shaft (18) ・ ・ Installation frame (19) ・ ・ Installation frame (26) ・ ・ Input pulley (29) ・ ・ Cover board (30) ・ ・ Roll support frame (31) ・ ・ Adjusting slot (35) ・・ Adjusting screw shaft (41) ・ ・ Hourglass roll (42) ・ ・ Roll support shaft

Claims (4)

[Claims] 1. A feed axis (O) of a hollow body (D) which can rotate around a feed axis (O-O) of a material (M).
-O), and several pairs of drum-shaped squeeze rolls (R1) (R2) (R3) (R4) (R
5) is arranged in such a manner that its rotation axis (XX) intersects with the feed axis (OO), which is slurred, by a constant angle (θ) in plan view, and is rotatably supported, and the feed is performed. Hold the surface of the material (M) sent into the inside of the hollow rotating body (D) along the axis (O-O) by the circumferential action surfaces of the above-mentioned squeeze rolls (R1) to (R5) that are in surface contact therewith. The material (M) is restrained in a state and is advanced under the state to cause the squeeze rolls (R1) to (R5) to rotate around the material (M) and simultaneously revolve around the material (M). ) A method of straightening a roll of a long pipe rod characterized by imparting a bending force and a cracking force to the surface of). 2. A mounting frame (18) (19) so that it can rotate about the feed axis (OO) of the material (M).
Hollow rotating body (D) that is supported in a horizontally installed state
And a plurality of upper and lower pairs capable of advancing and retracting toward the feed axis (O-O), and the feed axis (O-O)
In order to be able to rotate integrally with the hollow rotating body (D)
Roll supporting units (U1) (U2) (U3) (U4) (U5) assembled inside the hollow rotating body (D)
And each of the roll supporting units (U1) to (U5) is allowed to freely rotate, and its own rotation axis (XX) grinds with the feed axis (OO) at a constant angle (θ) in plan view. The hollow rotating body (D) is composed of several pairs of hourglass-shaped skew rolls (R1) (R2) (R3) (R4) (R5) axially supported in a crossing arrangement state and along the feed axis (O-O). )
The surface of the material (M) fed into the inside of the container was restrained in a holding state by the circumferential action surfaces of the skiwl rolls (R1) to (R5), and the material (M) was fed under that state. At this time, the above-mentioned skew rolls (R1) to (R5) revolve around the material (M) and revolve around the material (M) at the same time in accordance with the feeding action force, thereby giving a bending force and a clamping force to the surface of the material (M). A roll straightening device for a long tube rod characterized by being set so as to obtain. 3. A hollow rotating body (D) comprising a plurality of pairs of squeeze roll storage chambers (S1) (S2) (S3) (S4) (S5).
While forming from a solid block body (11) that has been hollowed out, each roll support unit (U1) (U2) (U3)
(U4) and (U5) are fitted to the block body (11) in the above-mentioned storage chambers (S1) to (S5) in a covered state, and the cover board (29) is vertically moved to the cover board (29). As a unit unit to be assembled with a roll support frame (30) screwed and fastened so that only the forward and backward operations can be performed, the cover plate (29) has a certain angle range around its own vertical center line (Y-Y). By rotating (α) and fitting and fixing the block main body (11) in the storage chambers (S1) to (S5) in a closed state, each skiw roll (R) is fixed.
1) (R2) (R3) (R4) (R5) rotation axis (X
-X) and the feed axis (O-O) of the material (M) are set so that a constant angle (θ) can be adjusted to a large or small value according to the feed speed of the material (M). Claim 2
Roll straightening device for the long pipe rod described. 4. A hollow rotating body (D) is provided with several sets of squeeze roll storage chambers (S1) (S2) (S3) (S4) (S5).
Formed from a solid block body (11) that is hollowed out, and a pair of front and rear hollow support shafts (12) and (13) protruding from both ends of the main body, and one of the support shafts (12) and (13) is formed. In addition, the input pulley (26) for rotationally driving the hollow rotating body (D) for a fixed time at the beginning of the work of feeding the starting end of the material (M) until it reaches the outlet side of the hollow rotating body (D). The long roll straightening device for a pipe rod according to claim 2, wherein the roll straightening device is fitted and integrated.