JP6228572B2 - Roller guide cushion mechanism and roller guide - Google Patents

Description

  The present invention relates to a roller guide cushion mechanism that maintains a suitable distance between the surfaces of a guide roller with respect to the size of a rolling material guided to a rolling roller.

  In order to increase the dimensional accuracy of the rolled material, it has been desired to accurately guide the rolled material to the rolling roll. For this reason, if the distance between the surfaces of the guide roller is set to be narrow, the rolled material will hit the guide roller and cause a roll mistake, or the rolled material will collide with the guide roller and stick, and the wrinkle will be transferred to the rolled material. As a result, there has been a problem that the accuracy of the product is lowered.

  In response to this problem, the photoelectric tube detects the ingress of the rolling material, operates the drive cylinder, and rotates the wheel gear interlocked with the support shaft forming the eccentric shaft, thereby rapidly reducing the distance between the guide rollers. An idea of moving to a predetermined position is disclosed (for example, see Patent Document 1). However, when the drive cylinder is mounted on the guide box, not only the manufacturing cost increases, but also the number of parts such as sensors for detecting the rolling material increases, and there is a problem that the management cost increases accordingly.

  Therefore, the gear interlocking with the support shaft and the eccentric shaft of the guide roller meshes with the pinion, and the operation shaft provided on the pinion rotates, so that the support shaft rotates via the gear and the eccentric shaft, and the guide roller The idea of adjusting the space between the guide rollers by distributing the cores is disclosed (for example, see Patent Document 2).

  In addition, an eccentric shaft that penetrates the support arm, a worm gear that rotates the rotation shaft, and a coaxial worm that is screwed to the worm gear. When the worm is rotated, the worm gear rotates and the rotation shaft Since the eccentric shaft provided integrally also rotates, the idea which the adjustment between the surfaces of a guide roller is implement | achieved is disclosed (for example, refer patent document 3).

In fact, Japanese Utility Model Publication No. 01-68107 JP 2008-178904 A JP 2013-116491 A

  However, the above-described conventional technology cannot cope with abnormal dimensions of the rolled material. In other words, since the mechanism for adjusting the distance between the guide roller surfaces according to the prior art cannot turn the pinion or the worm unless the operation of the roller guide is stopped, the distance between the guide roller surfaces that is narrower than the abnormal dimension of the rolled material. The rolled material passes as it is. For this reason, even if it adjusts to the distance between the surfaces of the guide roller suitable for the planned dimension of a rolling material at the time of a roller guide stop, an abnormal dimension part and a guide roller will mutually stick.

  If the distance between the surfaces of the guide roller is wider than the rolled material, the force for conjugating the rolled material is weakened, so that not only the rolled material is tilted and twisted, but also due to these effects, a shape defect occurs during rolling. Therefore, in order to obtain a force for appropriately conjugating the rolled material, the distance between the surfaces of the guide roller is set to be the same as or narrower than the planned dimension of the rolled material. However, if the tip of the rolled material has an abnormal dimension due to shaving, bending, or opening of the nose, the abnormal dimension portion collides with the guide roller, which may cause damage to the guide roller and the rolled material. For this reason, it has been desired to maintain a suitable distance between the surfaces of the guide roller even for the abnormal dimension portion of the rolled material.

Therefore, the inventors have invented a cushion mechanism for a roller guide that maintains the desired conjugation force over the entire length by adjusting the gap between the surfaces of the guide roller, which is also suitable for abnormal dimensions of the rolled material, as a result of ingenuity. 2014-181850). Specifically, when the distance between the guide roller surfaces is increased due to an abnormal dimension of the rolled material, the center pinion rotates via the eccentric gear and the idle gear so that the center surface adjustment shaft moves backward (opposite to the traveling direction of the rolled material). The impact mitigating portion having a spring mounted on the rear side of the center-plane adjusting shaft absorbs the impact accompanying the expansion of the guide roller between the surfaces (cushion effect). On the other hand, when the distance between the guide roller surfaces is reduced due to the passage of the abnormal dimension part of the rolled material, the center axis adjustment shaft moves forward (rolling material traveling direction) by releasing the pressure and restoring the impact mitigation part. To do. That is, the guide roller has a structure that finely adjusts the variation in expansion / contraction between the surfaces of the guide roller by the expansion / contraction of the impact relaxation portion via the center pinion. The cushion effect in this structure is expressed as follows. FIG. 5 is a conceptual diagram of the cushion mechanism for explaining the mathematical formula. The cushion mechanism has a symmetrical structure and is described only on one side.

  However, through actual machine tests of the cushion mechanism, the inventors have discovered that there is a new technical problem in further improving the cushion effect. That is, since the cushion mechanism has movable parts such as a bearing and a worm wheel between the center pinion and the impact mitigation part, the frictional force of these movable parts affects the cushion effect. As a result of this influence, the inventors have found a new solution for reducing the number of parts constituting the cushion mechanism as well as reducing the impact received by the rolled material from between the surfaces of the guide roller.

  Therefore, an object of the present invention is to provide a roller guide cushion mechanism that has a low frictional resistance of a movable part, a high impact relaxation effect, follows an abnormal dimension of a rolled material, and maintains a desired conjugation force over the entire length. There is.

  That is, the roller guide cushion mechanism according to the present invention includes a support shaft that pivotally supports a guide roller whose surface is expanded according to the size of the rolling material in the guide box, and an eccentric rotation that is coupled to the support shaft. A gear guide connected to the eccentric shaft, a rack that engages and slides with the gear, and an end of the rack that expands and contracts. And an elastic body that applies a force to narrow the space between the surfaces of the guide roller via the gear, and the rack slides and the elastic body when the gear rotates with the operation of the guide roller. Is characterized by deformation.

  Further, it is preferable that an adjustment screw is provided adjacent to an end of the rack opposite to the elastic body, and the rack slides and the elastic body contracts when the adjustment screw is tightened.

  Also, a roller guide characterized by mounting the cushion mechanism of the roller guide is desirable.

  Here, the “elastic body” includes, for example, all of springs, rubber, and other materials having elastic force.

  The cushion mechanism of the roller guide according to the present invention is a rack that meshes with the gear and slides, and expands and contracts in contact with the end portion of the rack, and narrows the space between the guide rollers via the rack and the gear. When the gear rotates with the operation of the guide roller, the rack slides and the elastic body is deformed, so that the rolled material can be stably stabilized without scuffing It can be guided to a rolling roll. That is, the elastic force of the spring is applied to the rack with respect to the rack that moves following the operation of the guide roller, and the distance between the surfaces of the guide roller follows the abnormal dimension of the rolled material. It is possible to maintain a suitable conjugation force against. Accordingly, the number of ridges and the number of breakage where the rolled material and the guide roller attach to each other are reduced, and continuous operation is realized without stopping the operation of the roller guide.

  Furthermore, since there are few movable parts accompanying the inter-surface adjustment, the frictional resistance of the movable parts is small, and not only the impact relaxation effect by the elastic body can be enhanced, but also the desired conjugation force over the entire length including the abnormal dimensions of the rolled material. The roller gap adjustment can be greatly adjusted in the same manner as (Japanese Patent Application No. 2014-181850).

  In addition, there is an adjustment screw adjacent to the end of the rack opposite to the elastic body, and when the adjustment screw is tightened, the rack slides and the elastic body contracts, so that the temperature change of the rolled material and the steel type The number of adjustments of the distance between the surfaces of the guide roller can be reduced with respect to a minute dimensional change associated with the change of.

  In addition, compared with the cushion mechanism in the above-mentioned Japanese Patent Application No. 2014-181850, the mechanism itself can be downsized and can be easily attached / detached / modified even in a small space. Furthermore, wear and breakage of each part can be avoided, and since it can be used for a long time, stable rolling is possible. Also, a conventional roller guide without a cushion mechanism can be added with a simple modification and addition of a mechanism.

It is the elements on larger scale of the guide roller carrying the cushion mechanism in this invention. It is a partial enlarged plan view which shows the state by which a rolling material is guide | induced to the guide roller carrying the cushion mechanism in this invention. It is the elements on larger scale of the guide roller carrying another cushion mechanism in the present invention. It is a conceptual diagram of the cushion mechanism of the roller guide in this invention. It is a conceptual diagram of the cushion mechanism of a roller guide.

  The cushion mechanism of the roller guide according to the present invention will be described with reference to FIG. FIG. 1 is a partially enlarged front view of a roller guide equipped with a cushion mechanism.

  As shown in FIG. 1, the roller guide cushion mechanism includes a support shaft 3 that pivotally supports a guide roller 2 whose surface is expanded in accordance with the dimensions of the rolling material S on the guide box 1, and the support shaft 3. Is provided in a roller guide having an eccentric shaft 4 that rotates eccentrically by being connected to the shaft, and a gear 5 that rotates by being connected to the eccentric shaft, and meshes with the gear and slides parallel to the traveling direction of the rolling material. Rack 6 and a spring 7 that expands and contracts in contact with the end of the rack on the same side as the travel direction of the rolled material. Slide to deform this spring. The spring 7 applies a force for pushing the rack 6 to the right side in FIG. 1, and this force acts as a force for narrowing the space between the guide rollers 2 via the rack 6 and the gear 5.

  The roller guide cushion mechanism described above has a spring adjustment screw 8 adjacent to the end of the rack 6 opposite to the spring 7, and when the adjustment screw is tightened, the rack slides and the spring contracts.

Hereinafter, with reference to FIG. 1, each member and mechanism which comprise the cushion mechanism of the roller guide by this invention are demonstrated.
The guide roller 2, the support shaft 3, the eccentric shaft 4, the gear 5, the rack 6, the spring 7, the spring adjustment screw 8, and the rack support pin 9 are provided as a pair with respect to the guide box 1, but have the same structure. Since only the rotation direction is reversed, only one side will be described.

The roller guide of the rolled material S is composed of a guide box 1. A guide roller 2 is provided on the front end side of the guide box 1 (illustration of the rear end side of the guide box 1 is omitted).
The guide roller 2 may be provided not only on the front end side of the guide box 1 but also on the rear end side.

  The guide roller 2 is attached to the guide box 1 with the support shaft 3 as a rotation center. The support shaft 3 is connected to the eccentric shaft 4 in an eccentric state, and is formed integrally with the eccentric shaft. The ends of the support shaft 3 and the eccentric shaft 4 are pivotally supported by a bearing (not shown) of the guide box 1 so as to be rotatable.

  The gear 5 is formed integrally with the eccentric shaft 4 and is located outside the guide box 1.

The rack 6 is located inside the gear 5 with respect to the guide box 1 and is installed in a direction in which teeth are arranged in the traveling direction of the rolled material S. The spring 7 is located at the end of the rack 6 on the same side as the rolling roll R to which the rolled material S is directed, and expands and contracts in the same direction as the traveling direction of the rolled material. The rack support pin 9 passes through the rack 6 and the spring 7 from the spring adjustment screw 8 side.
The installation positions of the gear 5 and the rack 6 may be on the upper side or the lower side with respect to the guide box 1. The end of the rack 6 and the end of the spring 7 may be connected by, for example, an adhesive or a predetermined member. The rack 6, the spring 7, the adjusting screw 8 and the rack support pin 9 may be arranged in a space in a predetermined case. At this time, even if the spring 7 abuts against the end of the rack 6 and the side wall of the case, the rack 7 contracts. The rack support pins 9 may be fixed in contact with the side walls of the case.

The elastic condition of the spring 7 is adjusted by tightening or loosening the spring adjusting screw 8. That is, when the spring adjusting screw 8 is tightened, the rack 6 slides toward the spring 7, so that the spring is contracted and the elastic force is increased. On the other hand, when the spring adjustment screw 8 is loosened, the rack 6 slides in the opposite direction to the spring 7, so that the spring is extended and the elastic force is weakened.
The adjustment screw 8 may be plural or singular and may be connected to the rack support pin 9.

  Here, the operation of the cushion mechanism of the roller guide according to the present invention will be described with reference to FIG. FIG. 2A shows a state where the normal dimension portion of the rolled material passes through the guide roller, and FIG. 2B shows a state where the abnormal size portion of the rolled material passes the guide roller.

  As shown in FIG. 2A, when the rolling material S is guided to the guide roller 2 by the roller guide, the distance between the surfaces of the guide roller almost increases and decreases as long as the normal dimension portion passes through the guide roller. It can be induced stably. On the other hand, as shown in FIG. 2 (b), when an abnormal dimension portion exceeding the normal dimension passes through the guide roller 2, the distance between the surfaces of the guide roller is increased along with the abnormal dimension portion. That is, the guide roller 2 receives a lateral load that intersects the traveling direction of the rolled material from the abnormal dimension portion of the rolled material S. For this reason, the support shaft 3 that pivotally supports the guide roller 2 rotates, and the eccentric shaft 4 connected to the support shaft rotates eccentrically as the support shaft rotates. Thereby, the distance between the surfaces of the guide roller 2 increases. At this time, the gear 5 connected to the eccentric shaft 4 rotates, and the rack 6 meshing with the gear slides in the same direction (parallel) as the traveling direction of the rolled material S. Then, the spring 7 receives a load from the end of the rack 6 in the same direction (parallel) as the direction of travel of the rolled material S and contracts, and the end of the rack receives a force in which the spring extends in the opposite direction. Therefore, the rack 6 has an abnormal dimension of the rolled material S via the gear 5 due to the expansion and contraction of the spring 7 with respect to the rotation of the guide roller 2 that attempts to increase the distance between the surfaces via the support shaft 3 and the eccentric shaft 4. The distance between the faces suitable for the part is controlled.

  Next, another cushion mechanism according to the present invention will be described with reference to FIG. 1 and 2 are numbered by adding 100 uniformly in FIG. 1 for easy reference. Further, only points different from the contents described in FIG. 1 and FIG. 2 will be described, and description of equivalent points will be omitted.

  As shown in FIG. 3, another roller guide cushion mechanism includes a support shaft 103 that pivotally supports a guide roller 102 having a space between the guide box 101 that expands according to the dimensions of the rolled material S, and the support shaft 103. A roller guide provided with an eccentric shaft 104 that rotates eccentrically by being connected to a shaft, a gear 105 that rotates by being connected to the eccentric shaft, and meshes with the gear to be orthogonal to the traveling direction of the rolling material. A rack 106 that slides in the direction, a spring 107 that expands and contracts in contact with the end of the rack opposite to the rolled material, and a washer 110 having a predetermined thickness that adjusts the load of the spring. When this gear rotates as the roller moves, the rack slides and the spring is deformed.

  The rack 106 is located closer to the guide box 101 on the traveling direction side of the rolled material S than the gear 105, and is arranged in a direction in which teeth are aligned perpendicular to the traveling direction. The spring 107 is located at the end of the rack 106 on the opposite side to the rolled material S, and expands and contracts in a direction orthogonal to the traveling direction of the rolled material.

  And when the abnormal dimension part of the rolling material S passes through the guide roller 102, the distance between the surfaces of the guide roller is increased along with the abnormal dimension part. At this time, the gear 105 connected to the eccentric shaft 104 rotates, and the rack 106 engaged with the gear slides away from the rolled material S. The spring 7 receives a load from the end of the rack 106 in a direction away from the rolled material S and contracts, and the end of the rack receives a force in which the spring extends in the opposite direction. Accordingly, the rack 106 has an abnormal dimension of the rolled material S via the gear 105 due to the expansion and contraction of the spring 107 with respect to the rotation of the guide roller 102 that attempts to increase the distance between the surfaces via the support shaft 103 and the eccentric shaft 104. The distance between the faces suitable for the part is controlled.

  As described above, the roller guide cushion mechanism in the present embodiment includes the rack 6 that meshes with the gear 5 and slides parallel to the traveling direction of the rolled material S, and the rack on the same side as the traveling direction of the rolled material S. Or a rack 106 that engages with the gear 105 and slides in a direction perpendicular to the traveling direction of the rolled material S, and the rack on the opposite side to the rolled material. And a spring 107 that expands and contracts in contact with the end portion. When the gears 5 and 105 rotate as the guide rollers 2 and 102 rotate, the racks 6 and 106 slide and the springs 7 and 107 deform. Thus, the rolled material S can be stably guided to the rolling roll without being glazed. That is, the elastic force of the springs 7 and 107 is applied to the racks 6 and 106 with respect to the racks 6 and 106 that move following the operation of the guide rollers 2 and 102, and the abnormal dimension of the rolled material S is reduced between the surfaces of these guide rollers. Since the distance follows, a conjugation force suitable for the rolled material can be maintained. Accordingly, the number of ridges and the number of breakage where the rolled material and the guide roller attach to each other are reduced, and continuous operation is realized without stopping the operation of the roller guide.

Furthermore, since there are few movable parts accompanying the adjustment of the surface, not only the frictional resistance due to the movable parts is small, the impact mitigating effect by the springs 7 and 107 can be enhanced, but also the desired holding over the entire length including the abnormal dimension of the rolled material S. The resultant force can be maintained, and the roller gap preparation can be greatly adjusted. In addition, it is as follows when the cushion effect in this structure is represented by numerical formula. That is, the impact can be mitigated from the cushion effect of the cushion mechanism in the above-mentioned Japanese Patent Application No. 2014-181850. FIG. 4 is a conceptual diagram of the cushion mechanism of the roller guide in the present embodiment for explaining the mathematical formula. The cushion mechanism has a symmetrical structure and is described only on one side.

Furthermore, it has adjustment screws 8 and 108 adjacent to the ends of the racks 6 and 106 on the opposite side of the springs 7 and 107, and when the adjustment screws are tightened, the rack slides and the springs contract, thereby rolling the rolled material. It is not necessary to adjust the distance between the surfaces of the guide roller with respect to a minute dimensional change accompanying a change in the temperature of S or a change in the steel type.
In addition, in said embodiment, although the rack 6 was comprised so that it might slide in the direction parallel or orthogonal to the advancing direction of a rolling material, this invention is not limited to these. That is, as long as the rack 6 meshes with the gear 5 and slides as the gear rotates, the sliding direction may be any direction.

DESCRIPTION OF SYMBOLS 1,101 Guide box 2,102 Guide roller 3,103 Support shaft 4,104 Eccentric shaft 5,105 Gear 6,106 Rack 7,107 Spring 8,108 Spring adjustment screw R Roll roll S Roll material

Claims (3)

The guide box is provided on a roller guide having a support shaft that pivotally supports a guide roller whose surface is expanded according to the dimensions of the rolled material, and an eccentric shaft that is connected to the support shaft and rotates eccentrically. ,
A gear connected to the eccentric shaft and rotating;
A rack that engages and slides with the gear;
Stretch in contact with the end of the rack, through the rack and the gear and a spring for applying a force in a direction to narrow the inter-surface of the guide roller,
The roller guide cushion mechanism, wherein when the gear rotates with the operation of the guide roller, the rack slides and the spring is deformed. An adjustment screw adjacent to the end of the rack opposite the spring ;
The roller guide cushion mechanism according to claim 1, wherein when the adjustment screw is tightened, the rack slides and the spring contracts. A roller guide comprising the roller guide cushion mechanism according to claim 1.

Images