JP3411435B2 - Coil shaping device for wire or strip - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coil straightening device for a wire coil or a coil shaping device which can be used for a rewinding mechanism of a wire or a strip.

[0002]

2. Description of the Related Art Generally, a wire rod formed by a hot rolling mill is formed into a coil through a Stelmore device, and the wire rod coil is hung on a C hook carrier to be conveyed and transferred to a tying device to be bound. One of the main quality items of this wire rod coil is the winding shape of the coil. In particular, if a few rings of squares are formed inside the coil, flaws will occur during bundling or when the C-hook crane is transported. In addition, when the wire is drawn in the subsequent secondary processing, the wire coil may become entangled, resulting in disconnection.

Therefore, conventionally, a worker hits the corners with a bat-shaped rod to make a correction before bundling, but the work load of the worker is large and the correction work is not easy, so that it is sufficient for quality improvement. The improvement effect was not obtained.

In order to solve the above problems, the present applicant has
Japanese Unexamined Patent Publication (Kokai) No. 5-185142 provides a device for automatically correcting the squareness of a wire rod coil. That is, this wire rod coil angling correction device includes a traveling carriage that can move forward and backward along the rail toward the coil side by a fixed stop of the wire rod coil that is hung on the C hook carrier, and a bearing stand and a carriage on the carriage. A horizontal sliding shaft that is slidably supported by a bracket and that is inserted and removed from the front side toward the wire coil, several arms that are arranged in parallel around this sliding shaft, and this arm. And a sliding shaft are connected in a tilted state in the same direction, and a guide mechanism that translates each arm in a direction orthogonal to the axial direction of the sliding shaft is provided. By moving back and forth by the cylinder, each arm is expanded and contracted several times in the wire rod coil, and after automatically correcting the angularity of the coil, the arm is closed and the traveling carriage is stopped backward to the original position.

Further, as a device for correcting the inner diameter of the wire rod coil, a sliding shaft and several shaping arms around the sliding shaft are connected by a connecting link, and the sliding motion of the sliding shaft causes the arm to expand and contract. The ones described in Japanese Patent Laid-Open No. 60-151614 and Japanese Patent Publication No. 47-2165 are known.

[0006]

SUMMARY OF THE INVENTION By the way, in the above-mentioned angular correction device and the device described in the above publication, each arm is connected to a sliding shaft by a connecting link. By moving the sliding shaft in the axial direction,
Each arm is configured to expand and contract the same distance.

Therefore, when the inner diameter of the coil of the wire is not a perfect circle but an elliptical shape, each arm expands and contracts with the same diameter, and inevitably the portion of the coil inner diameter portion that contacts the arm and the portion that does not. Will occur. It is difficult to correct such an elliptical coil into a perfect circular shape, and there is a limit to correction of the square shape.

Further, even when the square coil or the like is corrected for squareness, when the coil is inserted into the sliding shaft, the axis of the sliding shaft and the center of the coil do not always coincide with each other. Some deviation will occur. If the coil diameter is corrected while the axis is deviated, similar to the above, some of the several arms first press the wire on the inner diameter of the coil, while the other arms are not yet pressed. There has been a problem that the desired correction operation cannot be performed because the contact is not made.

[0009] These difficulties are not can occur only in Kakubari correction device of the wire coil, the coil wire
This is also a problem that can occur in a strip-shaped coil rewinding device .

In view of the above points, the present invention automatically corrects a disordered wire rod or strip plate in the inner diameter portion of a wire rod or strip coil, and automatically corrects even if the coil shape is not a perfect circle. The present invention is intended to provide a coil shaping device.

[0011]

In order to achieve the above object, the inventors of the present invention have previously proposed Japanese Patent Laid-Open No. 5-18514.
In No. 2, an improvement was made to the device for correcting the coil tension of the wire rod coil, and the expansion / contraction operation of each arm (particularly the diameter expansion operation) was configured to be different depending on the difference in the pressure applied from the wire rod or strip, and the center of the coil was slid Even if there is a deviation from the axis of the moving shaft, and even if the coil has an elliptical shape, the coil of the wire rod or the strip plate can be shaped.

FIG. 1 is a schematic diagram showing an outline of a coil shaping device of the present invention, and FIG. 2 is a schematic diagram for shaping an elliptical coil. The present invention will be described based on this figure. That is, in the coil shaping device 1 according to the present invention, the sliding shaft 3 which is slidably inserted into the coil S of the wire or strip.
A plurality of arms 4 arranged in parallel around the sliding shaft 3, connecting links 5 for connecting the arms 4 and the sliding shaft 3 in a state of being inclined in the same direction, and each arm. 4 is provided with an arm guide mechanism 6 for guiding the sliding shaft 3 in a direction orthogonal to the sliding shaft 3, and each arm 4 is expanded / contracted in the coil S by the movement of the sliding shaft 3 in the axial direction, or a disordered wire rod in the coil or In order to correct the disturbed strip plate, an arm guide mechanism 6 is provided with a pair of guides 7 and 8 arranged on both sides in the axial direction of the sliding shaft 3 and each arm 4 interposed between the guides 7 and 8. Of the guide element 9 which moves in the direction orthogonal to the sliding shaft 3 following the expansion / contraction operation of the armature 4 and slides when a load greater than a predetermined amount is applied to the arm 4 which is interposed between the guider 9 and the arm 4. A structure including a spring 10 that allows the arm 4 to move in the axial direction of the shaft 3 is adopted. .

The operation of the arm 4 is to perform two characteristic movements. One of them is that each arm 4 is expanded and contracted only in the direction B orthogonal to the axial direction A of the sliding shaft 3. The expansion / contraction operation of the arm 4 is performed by the movement of the sliding shaft 3 via the connecting link 5, but since the connecting link 5 makes a rotational motion, the arm 4 slides unless the arm 4 is restricted. Not only in the direction orthogonal to the axial direction of the shaft 3,
The sliding shaft 3 also moves in the axial direction A. Arm 4
Is to move in the axial direction of the sliding shaft 3, the arm 4
Rubbing due to friction occurs at the contact point between the coil wire and the coil wire, and the wire or the like is damaged, which also causes deterioration of the quality of the wire.

Therefore, in order to regulate the movement of the arm 4 in the axial direction of the sliding shaft 3, the guide element 9 connected to the arm 4 is regulated and guided by a pair of guides 7 and 8 on both sides in the axial direction of the sliding shaft. It adopts a configuration that does. As described above, the means for restricting the movement of the arm 4 in the axial direction of the sliding shaft 3 is the same as the technique disclosed in Japanese Patent Laid-Open No. 5-185142.

Further, another characteristic operation of the arm 4 is that the spring 1 interposed between the arm 4 and the guide 9 is used.
This is a point where the movement of the arm 4 in the axial direction A of the sliding shaft 3 is adjusted by the operation of 0. That is, as shown in FIG. 2, when the inner diameter of the wire rod coil 2 is elliptical or when the axial center of the C hook carrier is deviated, when some of the arms 4 come into contact with these wire rods or the like, A reaction force occurs in the arm 4 in a direction C orthogonal to the axial direction of the sliding shaft 3 (see FIG. 1).
Normally, the guide element 9 connected to the arm 4 via the spring 10 moves in the direction B orthogonal to the sliding axis along the guide by the expansion / contraction operation of the arm 4 while being balanced with the spring load. When the degree of the force C exceeds the spring load, the connecting link 5 becomes a couple at the supporting point of the sliding shaft 3 and moves the arm 4 in the axial direction A of the sliding shaft 3. That is, the arm 4 is moved in the same direction as the moving direction A of the sliding shaft 3, and the diameter expansion operation of the arm is smaller than that of the other arms.

This operation is an axial operation of the sliding shaft from the time when the arm comes into contact with the inner diameter of the coil such as a wire rod, and also the movement in the direction orthogonal to the sliding shaft 3 and the sliding shaft 3 move. Since the movement in the axial direction is a simultaneous movement, the movement is not a complete swivel movement by the connecting link 5, and does not cause a scratch on the inner diameter surface of the wire.

Here, as the guide element 9, not only a roller rolling along the pair of guides 7 and 8, but also a sliding member can achieve the above operation. Also,
The spring may be not only a compression spring but also a tension spring. Further, the arm and the guider may be connected only by the spring, but in order to reinforce the spring and strengthen the connection between the two, a hard arm is provided between the arm 4 and the guider 9. A structure may be adopted in which an elastic material such as a urethane tube is interposed and a coil spring is wound around the outer circumference.

If the above principle is used, it is needless to say that it can be used not only for the correction device for the coil tension of the wire rod coil, but also for the rewinding device for the wire rod or strip coil.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to the drawings. FIG. 3 is an overall side view showing an example in which the present invention is applied to an apparatus for correcting wire rod coil squareness, FIG. 4 is a front view of the same, and FIG. 5 is a front view of a guide. The wire rod coil tensioning device 11 is provided with a traveling carriage 13 that can move back and forth in the core direction of the wire rod coil in accordance with the stop of the wire rod coil S hanging on the C hook 12 of the C hook carrier at a fixed position. The traveling drive device 14 that drives the traveling carriage 13 is
The wheels 18 of the carriage 13 are rotated via a geared motor 15, a chain 16 and a chain wheel 17 installed on the carriage 13, and the wheels 18 roll along rails 19.

On the rear part of the traveling carriage 13, there is a bearing base 2
1 and a guide base 23 having a bearing portion 22 in the center are erected, and the rear side of the slide shaft 3 is horizontally slidably inserted between the bearing base 21 and the bearing portion 22 of the guide base 23. There is. The sliding shaft 3 is driven by an air cylinder 25 installed on a support base 24 at the rear of the carriage 13 so as to be able to move back and forth. Around the sliding shaft 3, several arms 4 are arranged in parallel at 5/6 equal positions except the upper part (see FIG. 4), and these arms 4 and the sliding shaft 3 are in the same direction. It is connected by several inclined connecting links 5 and connecting pins 26, 27 (see FIG. 6). Here, the arm 4 is arranged at the 5/6 equal position excluding the upper part because the arm 4 is the C hook carrier 1
This is to prevent it from interfering with the approach of 2. Therefore, even in the guide stand 23, the C hook carrier 1
A notch 28 is formed to allow the entry of 2 (see FIG. 4).
reference). Of course, in the embodiment where the C hook carrier 12 is not used, the arms 4 can be equally divided.

As a measure for preventing scratches when correcting the angular expansion of the wire coil inner diameter, the outer surface of each arm 4 is formed in an arc shape and a wooden arm liner is attached. Further, the stroke of the traveling carriage 13 can be up to approximately +1 m of the width of the wire rod coil.

Next, the arm guide mechanism 6 for guiding the arms 4 in the direction orthogonal to the sliding shaft 3 will be described.
As shown in FIG. 4, the arm guide mechanism 6 includes a guide base 23, a pair of guides 7 and 8 arranged on both sides of the sliding shaft 3 in the axial direction,
A guide roller 9 interposed between the guides 7 and 8 and moving in a direction orthogonal to the sliding shaft 3 following the expansion / contraction operation of each arm 4, and an arm 4 interposed between the guide roller 9 and the arm 4. Is provided with a coil spring 10 (see FIG. 6) that allows the arm 4 to move in the axial direction A of the sliding shaft 3 when a load larger than a predetermined value is applied.

The guide board 23 is, as shown in FIG.
a, a rear plate 23b, and a partition plate 23c that connects them and divides the inside into six equal parts. In addition, a front plate 23a located in the front part of the space surrounded by the partition plate 23c
Each of the openings 3 has an opening 30 formed therein.
The support arm 31 at the rear end of the arm 4 passes through the guide roller 9
Are linked to.

Support arm 31 of this arm 4 and guide roller 9
The connection structure with and will be described in detail with reference to FIGS. 6 is an enlarged side view of the guide mechanism 6, FIG. 7 is a plan view thereof, FIG. 8 is a front view thereof, and FIG. 9 is an exploded perspective view of essential parts. As shown,
At the rear end of the support arm 31 of the arm 4, a box body 32 having a U-shape in side view is provided. On the other hand, the guide rollers 9 are arranged in pairs on the roller shafts 36 projecting on both sides of the support body 35, and slide grooves 37 formed in the upper and lower surfaces of the support body 35 in the front-rear direction (axial direction of the sliding shaft 3). However, the arm 4 including the support arm 31 is slidable in the front-rear direction (axial direction of the sliding shaft) by fitting to the protrusions 38 formed on the upper and lower inner side surfaces of the box body 32.

Between the front surface of the support 35 and the rear surface of the support arm 31, the coil spring 10 and the hard urethane tube 39 as a stretchable material capable of expanding and contracting in the front-back direction (axial direction of the sliding shaft) are provided. Interposed, arm 4 and support 3
The connection of 5 is strengthened. It should be noted that the spring 10 and the elastic member 3 are provided on the facing surfaces of the support body 35 and the support arm 31, respectively.
By forming the concave portion 40 for holding 9 the arm 4 and the support 35 can be reliably connected.

The guide roller 9 slides in a state in which the guides 7 and 8 formed on the front and rear plates 23a and 23b of the guide base 23 restrict movement in the front-rear direction (axial direction of the sliding shaft). It is guided so as to be rollable in a direction B orthogonal to the axis 3. Therefore, when the reaction force from the coil wire or the like exceeds a predetermined value when the diameter of the arm 4 is expanded, the arm 4 follows the movement of the sliding shaft 3 against the elastic force of the coil spring 10 and the urethane tube 39. Then, it moves in the A direction (see FIG. 1). The predetermined value of the reaction force may be set to such an extent that squareness of the wire or the like can be corrected.

Next, the operation of the above-mentioned corner correction device will be described. When the wire coil suspended on the C-hook carrier 12 is conveyed to a fixed position, this fixed position stop is detected by a sensor, and the traveling drive device 14 is started in response to the stop signal,
The traveling carriage 13 is advanced to the fixed position toward the wire rod coil side. Next, drive the air cylinder 25 on the traveling carriage,
When the sliding shaft 3 is moved in the front-rear direction, several arms 4 connected to the sliding shaft 3 by connecting links expand and contract within the wire rod coil S. This expansion / contraction operation is performed several times to expand the irregular shape of the ring that has dropped into the inside of the coil and expands the irregular shape of the ring to correct the angularity of the coil.

After the square correction, the sliding shaft 3 is moved forward and the arm 4 is closed. In this state, the traveling carriage 13 stops and retracts to the original position, and the next wire coil reaches the fixed position.
Wait until the sensor detects it. Then, when the signal from the sensor is received, the traveling carriage 13 moves forward again, and the above operation is repeated.

In this case, the expansion / contraction operation of the arm 4 is performed not only in the direction in which the arm 4 is orthogonal to the axial direction of the sliding shaft 3 through the connecting link 5 by the movement of the sliding shaft 3, but also in the axial direction of the sliding shaft. Although it is about to move to A, the guide roller 9 connected to the arm 4 causes the pair of guides 7 and 8 on both sides of the sliding shaft 3 in the axial direction.
Since the arm 4 is regulated and guided by, the arm 4 expands and contracts in the direction orthogonal to the axial direction of the sliding shaft 3.
It is possible to prevent rubbing of the wire material that comes into contact with.

Further, as shown in FIG. 2, when the inner diameter of the wire rod coil 2 is elliptical, when some of the several arms 4 come into contact with these wires, the shaft of the sliding shaft 3 is attached to the arm 4. A reaction force in the direction C orthogonal to the direction is generated (see FIG. 1). Normally, the guide roller 9 connected to the arm via the spring 10 moves in the direction B orthogonal to the sliding axis along the guide by the expansion / contraction operation of the arm 4 while balancing the spring load, but the reaction force from the wire rod. When the degree of C exceeds the spring load, the connecting link 5 becomes a couple at the support point of the sliding shaft 3 and moves the arm 4 in the axial direction A of the sliding shaft 3.

That is, the arm 4 is moved in the same direction as the moving direction A of the sliding shaft 3 to shorten the spring 10. Then, the diameter expansion operation of the arm 4 shortened by the spring 10 becomes smaller than that of the other arms, and the other arm 4 can be expanded until it comes into contact with another portion of the elliptical wire coil. Therefore, even if the coil has an elliptical shape, or the axial center of the coil is deviated from the axial center of the sliding shaft, the angular correction operation can be reliably performed.

This operation is an axial operation of the sliding shaft 3 from the time when the arm comes into contact with the inner diameter of the coil such as a wire rod, and the movement in the direction orthogonal to the sliding shaft 3 and the sliding shaft Since it is simultaneously moved with the axial movement of the wire, it is not a complete swivel motion by the connecting link 5, and therefore does not cause a scratch on the inner surface of the wire.

The principle described above can be applied not only to the device for correcting the squareness of the wire rod coil described in the above embodiment, but also to the rewinding device for the wire rod coil or the strip coil .

[0034]

As is apparent from the above description, according to the present invention, in a coil shaping device that expands and contracts several arms arranged around a sliding shaft using a connecting link, each arm is slid. Since the guide that expands and contracts only in the direction orthogonal to the axial direction of the moving shaft is provided, friction between the arm and the wire does not occur due to friction, and the quality of the wire can be maintained well and the arm can be Since the spring is interposed between the arm and the guide that guides along the guide, the arm moves in the axial direction of the sliding shaft only when a load larger than a predetermined value is applied to the arm. Even if the inner diameter is oval or the axial center of the C hook carrier is deviated, there is an advantageous effect that the coil angularity can be easily corrected.

If an elastic member as well as a spring is interposed between the arm and the guide, it helps strengthen the connection between the arm and the roller portion. Further, by utilizing the principle of the present invention, it can be used not only for the correction device for the coil tension of the wire rod coil, but also for the rewinding device for the coil of the wire rod or strip.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing an outline of a coil shaping device of the present invention.

FIG. 2 is a schematic diagram when shaping an elliptical coil.

FIG. 3 is an overall side view showing an example in which the present invention is applied to a wire rod coil squareness correcting device.

[Figure 4] Similarly, a front view

[FIG. 5] Similarly, a front view of the guide board

FIG. 6 is an enlarged side view of the guide mechanism.

7 is a plan view of FIG.

FIG. 8 is a front view thereof

FIG. 9 is an exploded perspective view of the main part thereof.

[Explanation of symbols]

1 coil shaping device 3 Sliding shaft 4 arms 5 connection links 6 guidance mechanism 7, 8 guide 9 guide 10 springs 11 Coil angle correction device 13 Traveling cart 19 rails 23 Information board 25 air cylinders 31 Support arm 32 boxes 35 Support 37 slide groove 38 ridges 39 elastic material

Continuation of the front page (56) References JP-A-5-185142 (JP, A) JP-A-52-84149 (JP, A) JP-A-51-86046 (JP, A) (58) Fields investigated (Int .Cl. ⁷ , DB name) B21C 45/00-49/00

Claims (4)

(57) [Claims] 1. A sliding shaft slidably and slidably inserted in a coil of a wire rod or a strip plate, and a plurality of arms arranged in parallel around the sliding shaft, each of which is inclined in the same direction. In the coil by the movement of the sliding shaft in the axial direction, a connecting link for connecting each of the arms and the sliding shaft is provided, and an arm guide mechanism for guiding the arms in the direction orthogonal to the sliding shaft. In a coil shaping device for a wire rod or strip that expands and contracts each arm to correct a disturbed wire rod or strip in the coil, the arm guide mechanism includes a pair of axially arranged sliding shafts. A guide, a guide that is interposed between the guides and moves in a direction orthogonal to the sliding axis following the expansion and contraction operation of each arm, and a load that is interposed between the guide and the arm and that is greater than a predetermined amount is applied to the arm. A sp that allows the arm to move in the axial direction of the sliding shaft when added. Coil shaping device of the wire or strip, characterized in that a ring. 2. The coil shaping device for a wire rod or strip according to claim 1, wherein a spring and a stretchable member are interposed between the guider and the arm. 3. The coil shaping device according to claim 1, which is used as a device for correcting angularity of a wire rod coil. 4. The coil shaping device according to claim 1, which is used in a rewinding device for a coil of a wire rod or a strip plate.