JP2019093402A - Guide device of straightening machine - Google Patents

Abstract

To provide a guide device of a straightening machine capable of prolonging service life of a guide member which can guide properly material to be leveled and, thereby, improving the efficiency of operation of the straightening machine.SOLUTION: A guide device includes a holding device 28 and a plurality of support devices 20 which support a guide member 18. The holding device 28 and the support devices 20 respectively support the guide members 18 freely rotatably. Further, the support devices 20 support the guide member 18 so as to allow displacement in the extension direction thereof. Although the guide member 18 heated with age by friction heat due to contacting with material 10 to be leveled is thermally expanded, the displacement in the extension direction of the guide member 18 due to thermal expansion is not obstructed and it can be prevented that the guide member 18 is bent in the direction of intersecting the extension direction.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a guide device of a correction machine for guiding a material to be corrected toward a correction device.

  For example, in Patent Document 1, as a correction machine for correcting material to be corrected such as a round bar steel material or the like obtained by cold-rolling a wire rod coil and cutting to a predetermined size, it is vertically located across the transfer path of the material to be corrected A straightener with a pair of straightening rolls arranged to intersect each other at a required angle to the transfer path is disclosed. In this correction machine, bending or the like is corrected in the process of forcibly passing the material to be corrected between the two correction rolls rotationally driven in a predetermined direction. Further, in the correction machine, the material to be corrected is guided by the guide devices disposed on the material inlet side and the material outlet side of the correction section between the pair of correction rolls, so that the transfer path of the material to be corrected is prevented from shifting. Configured

  In the patent document 1, when passing through the correction section, the portion on the entrance side before passing through the correction section of the material to be corrected which rotates at high speed is shaken, that is, with the guide member of the guide device The guide member is supported so as to be rotatable with the material to be corrected in order to prevent the surface of the material from being scratched by contact. Moreover, in order to suppress generation | occurrence | production of the surface wrinkles of the to-be-corrected material which passed the correction machine, forming a guide member with a resin material softer than a to-be-corrected material is proposed (for example, patent document 2).

Japanese Utility Model Publication No. 55-17660 Japanese Utility Model Publication No. 63-11218

  The guide member made of a resin material does not attach surface wrinkles to the material to be corrected by contact with the material to be corrected, but is heated over time and thermally expanded by frictional heat due to the contact to the material to be corrected. In the conventional guide device, since the guide member is fixed immovably in the material guide direction, the thermally expanding guide member stagnates in the direction intersecting the material guide direction, and the frictional resistance with the material to be corrected is increased. There was a problem that wear progressed. That is, even if the guide member is supported so as to freely rotate, the service life until the original guide function of the guide member is lost due to wear and the correction accuracy is reduced is short, and the running cost is increased. In addition, it takes a lot of time and effort to replace the guide members each time, and it is necessary to stop the straightening machine once during the replacement work, and if the replacement becomes frequent, the operating efficiency of the straightening machine itself Cause the problem of greatly reducing

  That is, in view of the problems inherent in the prior art described above, the present invention has been proposed to suitably solve this problem, and extends the service life of the guide member capable of appropriately guiding the material to be corrected, An object of the present invention is to provide a guide device for a correction machine that can improve the operation efficiency of the correction machine.

In order to overcome the above-mentioned problems and to achieve the intended purpose, the guide device of the correction machine according to the invention of claim 1 is:
A guide device of a correction machine for guiding a material to be corrected (10) toward a correction device (12), comprising:
A pipe-like guiding member (18) made of a resin material, which extends along the guiding direction of the material to be corrected (10) and is formed with an insertion hole (18a) for inserting and guiding the material to be corrected (10); ,
A supporting device (not shown) that is capable of freely rotating the guide member (18) about an axis in the extension direction of the guide member (18) and allowing displacement of the guide member (18) in the extension direction 20) and to provide a summary.
In the invention of claim 1, the guide member made of the resin material is configured to be supported so as to be freely rotatable and to allow displacement in the extension direction, so the guide member is extended by frictional heat with the material to be corrected The thermal expansion in the direction can be allowed to prevent the guide member from stagnating in the direction crossing the extending direction. Therefore, the frictional resistance between the guide member and the material to be corrected can be suppressed to reduce the wear of the guide member, and the service life in which the material to be corrected can be properly guided by the guide member can be extended. , Can improve the operation efficiency of the correction machine. In addition, since the frequency of replacement of the guide member can be reduced, the running cost can be reduced.

In the invention of claim 2, the support device (20) comprises a support (30) for supporting a bearing (26) externally fitted rotatably on the guide member (18); and the support (30) A stopper (34b, 36b) for restricting movement of the bearing (26) in one of the extending directions, and movably disposed in the extending direction with respect to the support (30). A gist is that a pressing member (46) for urging the bearing (26) toward the stopper (34b, 36b) by an elastic member (48) is provided.
In the invention of claim 2, since the bearing externally fitted to the guide member is configured to be biased toward the stopper by the elastic force of the elastic member, generation of noise due to rattling of the bearing supported by the support device is suppressed. Can.

In the invention of claim 3, the support (30) comprises a fixed half (34), a movable half (36) supported openably and closably with respect to the fixed half (34), and both halves (34, 36) and a lock member (38) for releasably locking the support (30) by releasing the movable half (36) from the fixed half (34). The gist of the present invention is that the guide member (18) is detachably mounted.
In the invention of claim 3, since the guide member can be easily attached and detached, the cycle time required for the replacement can be shortened to improve the operation efficiency of the correction machine.

  According to the guide device of the correction machine according to the present invention, it is possible to extend the service life of the guide member capable of properly guiding the material to be corrected, and to improve the operation efficiency of the correction machine.

It is the schematic which shows the correction machine which concerns on an Example. It is the schematic which looked at the support apparatus of the guide apparatus which concerns on an Example from the upstream of the material feeding direction. It is a schematic sectional drawing in the AA of FIG.

  Next, a guide device for a correction machine according to the present invention will be described below by way of preferred embodiments with reference to the accompanying drawings.

  The straightening machine of the embodiment shown in FIG. 1 is a material comprising a straightening device 12 for straightening a straightened material 10 such as a round bar steel material and a pinch roller which feeds the straightened material 10 toward the straightening device 12. The device 14 is provided with a guide device 16 disposed between the material supply device 14 and the correction device 12 for guiding the material to be corrected 10 fed by the material supply device 14 toward the correction device 12. As the correction device 12, for example, a plurality of correction cylinders in which insertion holes along the material feeding direction are formed in a rotary body driven to rotate so that the insertion holes deviate from the rotation center of the rotation body A staggered arrangement of spacing in the direction is employed. In the correction device 12, the material to be corrected 10 passes through the insertion holes of the correction cylinders of the rotationally driven rotating body, whereby the bending or the like of the material to be corrected 10 is corrected. In addition, as the correction apparatus 12, what arranged the pair of correction rolls so that it might mutually cross | intersect at the required angle with respect to the transfer path of the to-be-corrected material 10, the other various structures are employable. Moreover, in the correction machine of the embodiment, for example, the fixed material 10 having a fixed size of about 6 m is corrected.

  The guide device 16 includes a pipe-like guide member 18 in which an insertion hole 18 a through which the material to be corrected 10 can be inserted is formed, and a support device 20 for supporting the guide member 18. In the embodiment, the guide member 18 releasably connects the plurality of guide members 18 by the connector 22 so that the guide members 18 cover the feed path between the feeding device 14 and the correction device 12. The correction material 10 is configured to be inserted and guided. The guide member 18 is formed of a resin material softer than the material 10 to be corrected. In addition, various resin materials other than MC nylon etc. can be used as said resin material. At the upstream end of the guide member 18, an introduction member 24 having a tapered introduction hole (not shown) which is expanded toward the upstream side in the material feeding direction is connected. The tip end of the material to be corrected 10 fed by the above-mentioned method can be smoothly introduced into the insertion hole 18 a of the guide member 18. Further, a bearing 26 for supporting the guide member 18 rotatably freely is externally fitted on the guide member 18 so as to move integrally, and the bearing 26 is supported by the support device 20. Specifically, the bearing 26 is fixed to the guide member 18 by a fixing means such as a screw.

  The guide device 16 of the embodiment is provided with a holding device 28 positioned on the most upstream side of the material feeding direction to support the guide member 18 and spaced downstream of the holding device 28. And 20) are arranged. In the embodiment, while the three guide members 18 are connected by the connector 22, the bearings 26 are externally fitted to the respective guide members 18, and the bearings 26 of the respective guide members 18 correspond to the corresponding holding devices 28 or supports. It is supported by the device 20.

  As shown in FIGS. 2 and 3, the support device 20 is provided with a support 30 for supporting the bearing 26 externally fitted to the guide member 18, and the support 30. Stoppers 34b and 36b for restricting movement in one of the extending directions, and movably disposed in the extending direction with respect to the support 30, the bearing 26 is directed toward the stoppers 34b and 36b by an elastic member 48. And a pressing member 46 for biasing. The support 30 is capable of unlocking the fixed half 34 disposed on the base 32, the movable half 36 supported openably and closably with respect to the fixed half 34, and both the halves 34 and 36. A lock member 38 for locking is provided, and by opening the movable half 36 relative to the fixed half 34, the guide member 18 can be detachably attached to the support 30. In the embodiment, the movable half 36 is pivotally supported at one radial side of the guide member 18 in the fixed half 34, and the movable half 36 is pivoted upward about the pivot portion. It is configured to open by doing. Note that one side in the left-right direction intersecting the feed path of the material 10 to be corrected is set as the driving operation side of the correction machine, and the pivoting portion of the movable half 36 is on the back side opposite to the operation side. As the movable half 36 is positioned from the operation side to the rear side, the fixed half 34 is widely opened.

  Arc-shaped support surfaces 34a and 36a are formed on the opposing surfaces of the two halves 34 and 36 in the closed state, and by closing the two halves 34 and 36, the two support surfaces 34a and 36a are used. A support hole 40 is formed to support the movement of the bearing 26 of the guide member 18 in the axial direction (the extending direction of the guide member 18) while restricting the movement of the bearing 26 in the radial direction. Further, as shown in FIG. 3, stoppers 34 b, 36 b radially projecting on one end side (the upstream end side in the embodiment) of the material feeding direction are provided on each of the support surfaces 34 a and 36 a. The positions of the side surfaces are regulated by the stoppers 34b and 36b, and the upstream movement of the bearing 26 (guide member 18) in the material feeding direction (the extending direction of the guide member 18) is regulated.

  As shown in FIG. 3, in each of the half bodies 34 and 36, stepped holes 42 are formed at a plurality of locations along the material feeding direction. The stepped hole 42 has a large diameter hole 42a formed on the upstream side, and a small diameter hole 42b formed on the downstream side, and can be inserted through the stepped hole 42 into the small diameter hole 42b. A bolt 44 having an axial portion 44a is inserted, and a pressing member 46 is attached to the end of the bolt 44 which protrudes downstream from the small diameter hole 42b. In the embodiment, the lower pressing member 46 is attached to the two bolts 44 disposed in the fixed half 34, and the upper pressing member 46 is attached to the two bolts 44 disposed in the movable half 36. The upper pressure member 46 is configured to open and close integrally with the movable half 36. The upper and lower pressing members 46 are configured not to interfere with the guide member 18 in a state where the movable half 36 is closed with respect to the fixed half 34.

  A spring (compression coil spring) 48 as an elastic member wound around the shaft 44a of the bolt 44 is resiliently interposed between the head 44b of the bolt 44 and the step 42c of the stepped hole 42, and the spring The pressure member 48 is always resiliently urged upstream by 48. The pressing member 46 is provided with a contact portion 46a inserted into the support hole 40 along the support surfaces 34a and 36a of the corresponding half bodies 34 and 36, and the extension end of the contact portion 46a corresponds to the bearing 26. In contact with the downstream end face of the That is, the bearing 26 supported in the support hole 40 is urged in the direction of coming into contact with the stoppers 34 b and 36 b by the elasticity of the plurality of springs 48. Further, the spring 48 can press the bearing 26 against the stoppers 34 b and 36 b to support it without rattling, and the displacement in the extension direction of the guide member 18 due to thermal expansion is set to an allowable elastic force (biasing force).

  Unlike the support device 20, the holding device 28 is configured to freely rotatably support the guide member 18 in a state where displacement of the guide member 18 in the extension direction is not allowed. And since the structure which supports the guide member 18 in the holding | maintenance apparatus 28 so that free rotation is fundamentally the same as the support apparatus 20, the same code | symbol is attached | subjected to the same member and it demonstrates easily. That is, in the holding device 28, a support 30 supporting the guide member 18 is a fixed half 34 disposed on the base 32, and a movable half 36 supported openably and closably with respect to the fixed half 34. And a lock member 38 lockably unlocking the two halves 34, 36. And, on both supporting bodies 34, 36 of the holding device 28, stoppers 34b, 34b, 36b, 36b are provided on the respective supporting surfaces 34a, 36a so as to be separated in the axial dimension of the bearing 26 and project radially. By arranging the bearing 26 between the stoppers 34b, 34b, 36b and 36b, the displacement of the bearing 26, that is, the guide member 18 in the extending direction (material feeding direction) is restricted.

[Operation of Example]
Next, the operation of the guide device of the correction device of the embodiment configured as described above will be described.

  The material to be corrected 10 fed by the material feeding device 14 is introduced into the insertion hole 18 a of the guide member 18 in the guide device 16 via the introduction member 24, and is guided downstream by the guide member 18. Be done. The material 10 to be corrected which is guided by the guide member 18 and passes through the correction device 12 is corrected by passing through a plurality of correction cylinders arranged in a staggered manner. Further, the material 10 to be corrected is rotated by passing through the correction cylinder that is driven to rotate, and the portion of the material 10 to be corrected before entering the correction device 12 rotates the inside of the guide member 18 while the correction device 12 rotates. You will be guided towards.

  Since the guide member 18 is formed of a resin material softer than the material 10 to be corrected, it is possible to prevent the occurrence of display wrinkles on the material 10 to be corrected due to contact with the guide member 18. Further, since the guide member 18 is supported so as to be freely rotatable, the wear of the guide member 18 is reduced by the follow-up rotation of the guide member 18 when the material 10 to be corrected rotates. Also, since the bearing 26 supported by the support 30 is pressed against the stoppers 34b and 36b by the spring 48, the bearing 26 is supported without rattling, and the generation of noise is suppressed.

  Here, the guide member 18 made of a resin material is heated with time due to the frictional heat due to the contact with the material 10 to be corrected and thermally expanded. In the embodiment, since the support device 20 supports the guide member 18 so as to allow displacement in the extension direction (downstream displacement away from the holding device 28 in the embodiment), the thermal expansion is performed. The displacement of the guide member 18 in the extending direction due to the movement of the guide member 18 is not impeded, and the guide member 18 does not stagnate in the direction intersecting the extending direction. Therefore, it can suppress that the frictional resistance of the guide member 18 and the material 10 to be corrected increases, and can suppress advancing of abrasion. Further, the bending of the guide member 18 can reduce the inhibition of the rotation of the bearing 26. Therefore, it can suppress that the frictional resistance of the guide member 18 and the material 10 to be corrected increases, and can suppress advancing of wear. That is, even if the guide member 18 made of a resin material is employed to suppress the occurrence of display wrinkles of the material 10 to be corrected, the guide function by the guide member 18 is impaired and wear occurs until the correction accuracy decreases. Life can be extended. Therefore, the frequency of replacement of the guide member 18 can be reduced, and a decrease in the operating rate of the correction machine can be suppressed. In addition, since the service life of the guide member 18 is extended, the running cost can be reduced. Further, since the frictional resistance between the guide member 18 and the material 10 to be corrected can be suppressed to a low level, the noise generated by the contact between the guide member 18 and the material 10 to be corrected can be reduced. Further, as the guide member 18 is displaced in the extending direction by thermal expansion, the bearing 26 is also displaced against the elastic force of the spring 48 integrally with the guide member 18 and separated from the stoppers 34 b and 36 b. Since the elastic force of the spring 48 is applied to the bearing 26, the rattling can be suppressed without the bearing 26 becoming free.

  In the guide device 16 of the embodiment, since the plurality of guide members 18 are connected by the connector 22, the guide members 18 with high wear can be individually removed and replaced, and the material cost can be reduced. Further, by connecting the guide member 18 having a predetermined size with the connector 22, the guide member has a desired length, so that the manufacturing cost of the guide member 18 can be reduced.

  The holding device 28 and the supporting device 20 are configured such that the guide member 18 can be easily attached and detached simply by opening the movable half 36 with respect to the fixed half 34. The cycle time required for replacement can be shortened. Thereby, the fall of the operation rate of a correction machine can also be controlled. Further, in the embodiment, the guide 26 is configured to be handled in a state in which the bearing 26 is externally fitted, and the bearing 26 is supported by the support 30 of each device 28, 20. The operation of removing and attaching the guide member 18 from the bearing 26 at the time of attachment / detachment replacement is unnecessary, and the cycle time can be further shortened. Further, since the movable half 36 of the support 30 is designed to be opened from the operation side to the far front, replacement work of the guide member 18 from the operation side is easy.

[Modification example]
The present application is not limited to the configuration of the above-described embodiment, and other configurations can be adopted as appropriate.
1. In the embodiment, although the bearing is configured to be fitted on the guide member, a configuration may be adopted in which the support device is provided with a bearing that supports the guide member so as to freely rotate.
2. In the embodiment, the bearing externally fitted to the guide member is configured to be biased by the spring toward one side in the extending direction, but the spring can be omitted. That is, the guide member (bearing) supported by the support device may be freely displaceably supported in the extending direction.
3. In the embodiment, the holding device for supporting the guide member is configured to be supported in a state of restricting the displacement in the extending direction of the guide member, but instead of the holding device, the configuration for supporting the guide member by the support device It can be adopted. That is, all of the devices for supporting the guide members in the guide device may be a support structure that allows free rotation of the guide members and allows displacement in the extension direction.

10 correction material, 12 correction device, 18 guide member, 18a insertion hole, 20 support device 26 bearing, 30 support body, 34 fixed half body, 34b stopper, 36 movable half body 36b stopper, 38 lock member, 46 pressing member, 48 Spring (elastic member)

Claims (3)

A guide device of a correction machine for guiding a material to be corrected toward a correction device, the guide device comprising:
A pipe-shaped guiding member made of a resin material, which extends along the guiding direction of the material to be corrected and is formed with an insertion hole for inserting and guiding the material to be corrected;
A correction device comprising: a support device capable of freely rotating the guide member about an axis in the extension direction of the guide member and supporting the displacement of the guide member in the extension direction of the guide member. Guide device of the machine.   The support device is a support that supports a bearing that is rotatably fitted on the guide member, and a stopper that is provided on the support and that restricts movement of the bearing in one of the extending directions. The guide device for a correction machine according to claim 1, further comprising: a pressing member disposed movably in the extending direction with respect to the support and biasing the bearing toward the stopper by an elastic member.   The support includes a fixed half, a movable half that is openably and closably supported with respect to the fixed half, and a lock member that locks the two halves so as to be able to release the lock. 3. The guide device for a correction machine according to claim 2, wherein the guide member is detachably mounted on the support by releasing the movable half.

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