JP3373727B2 - Roller holder position fixing device for roller guide - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a position fixing device for a roller holder used for a roller guide having a central distribution mechanism capable of moving the interval between guide rollers by central distribution according to the width of a rolled material.

[0002]

2. Description of the Related Art Conventionally, as a position fixing device for a roller holder, there is one disclosed in Japanese Patent Publication No. 5-63243 proposed by the present applicant. In this position fixing device, a clamp cylinder is provided above each roller holder, and the tip end of the rod of each clamp cylinder is T-shaped so that it can move in the groove provided in the guide box. Then, by operating the clamp cylinder, the tip of the rod is pressed into the groove and the roller holder is fixed to the guide box.
The roller holder is made movable by separating the rod tip from the groove.

[0003]

Although the conventional roller holder position fixing device can securely fix the roller holder and the clamp functions effectively, the following is required for individually clamping the left and right roller holders. It turned out that there are points to be improved. That is, the first is that when steel materials that exceed the set dimensions such as the thickened portion, the spread, and the cracks are passed, the upper side of the left and right roller holders is opened, and accurate guidance cannot be performed. Point to invite. Second
Is that the opening of the roller holder on the upper side causes damage to the roller guide itself due to a structure that does not allow this easily, and maintenance costs are high. Thirdly, the opening of the roller holder causes plastic deformation of the fixed portion and the sliding portion of the roller guide, which makes it impossible to adjust the center of the guide roller when changing the mold. In order to solve the above problems, it is conceivable to increase the thickness and size of the member for improving the rigidity of the roller guide. However, if this is done, the roller guide cannot be stored in a limited space. There is a new inconvenience. An object of the present invention is to prevent the upper part of the roller holder from being opened or twisted due to the reaction force of the rolled material, and to solve the problems such as the deterioration of the tying property and the damage of the roller guide, which are caused by the opening and twisting.

[0004]

According to the present invention, in a roller guide having a central distribution mechanism, a clamp bar installed above the roller holder is operated by a clamping cylinder to simultaneously fix the left and right roller holders. However, the solution is as follows. The present invention is
A roller guide provided with a pair of roller holders provided in a guide box and a center distribution mechanism that distributes both roller holders to the left and right from the center, which is provided on the roller holder. It is provided with a joint portion, a clamp bar which is arranged above both roller holders so as to extend thereover, and a clamp cylinder which is arranged above each roller holder. The clamp bar is connected to the tip of the movable part of the clamp cylinder located above the clamp bar, and can be engaged with and disengaged from the engaging part. As the engaging means, the engaging portion is used as an engaging groove, and the lower portion of the clamp bar can be freely engaged with the engaging groove, or the engaging portion is used as an engaging protrusion, and the engaging protrusion is engaged. A possible locking recess is provided at the bottom of the clamp bar. The mounting position of the clamp cylinder is, for example, on the top plate of the guide box.

[0005]

[Operation] The clamp bar, which is inserted between the left and right roller holders, simultaneously presses and fixes both roller holders by the action of the clamping cylinder, and prevents the upper part of the roller holders from opening due to the reaction force of the rolled material, improving the tying property. The roller guide itself is prevented from being damaged.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Since the position fixing device A of the present invention is used for the roller guide B, an embodiment of the roller guide will be described first, and then the position fixing device will be explained.

In the roller guide B shown in FIGS. 1 to 3, a guide box 1 detachably attached to a rest bar is provided with a pair of roller holders 2 in the horizontal direction of FIG. The guide rollers 3 and 4 are rotatably supported by the roller pins 5 and 6 in the traveling direction. The roller pin 5 on the opposite side (rear end side) to the rolling roll R is an eccentric roller pin. Each roller holder 2 is supported by a screw spindle 7 which is horizontally provided under the guide box 1 via a slide bracket 8 so as to be movable in the axial direction of the screw spindle. The pair of roller holders 2 slide in opposite directions in the left-right direction of FIG. 1 in accordance with the rotation of the screw spindles 7 which are in a reverse screw relationship with each other, so that the center distribution function is exhibited. The rotation drive means of the screw spindle 7 is appropriately selected such as one in which a motor is connected to one end side of the screw spindle to automatically rotate and drive, or one which is manually operated using a tool such as a wrench.

Now, an embodiment of the position fixing device A will be described. This position fixing device is shown in FIGS.
~ Engagement portion 2 provided on the roller holder 2 as shown in FIG.
a, 2a1 and a clamp bar 9 that can be locked to this engaging portion
And a clamp cylinder 10 that serves as a drive means for the clamp bar. The engaging portion is provided on the upper portion of both roller holders 2, and according to the examples of FIGS. 1 and 6, as the engaging portion in the width direction (horizontal direction) of the upper surface of the roller holder substantially at the intermediate position, The engaging grooves 2a, 2a1 are cut in a transverse manner, and the engaging grooves 2a, 2a1 are located on a straight line facing each other. A clamp bar 9 can be engaged in the engagement grooves 2a, 2a1. Clamp bar 9
Are arranged above each roller holder 2 so as to be passed over these roller holders. Clamp bar 9
Has a shape capable of being engaged with and disengaged from the engaging grooves 2a, 2a1, and has a function of engaging with both engaging grooves to simultaneously fix the roller holder. The operation (vertical movement) of the clamp bar 9 is performed by driving the clamp cylinder 10. Clamping cylinders (hydraulic cylinders in the illustrated example) 10 are arranged above the roller holders 2, respectively. Each clamp cylinder 10 is fixed to the top plate 1 a above the guide box 1. The movable part 10a of the clamp cylinder hangs down toward the roller holder as shown in FIG. 4, and is connected to the clamp bar at its tip. In the state shown in FIGS. 1 and 4, the clamp bar 9
Is fitted in the engaging grooves 2a, 2a1 of the roller holder 2 (see FIG. 4), and therefore the left and right movement of each roller holder is restricted by the clamp bar. When the clamping cylinder 10 is a hydraulic cylinder as shown, a hydraulic pipe (not shown) is connected between the pair of hydraulic cylinders, and the hydraulic pressure is lowered to raise the clamp bar and slide the roller holder left and right. On the contrary, by raising the hydraulic pressure, the clamp bar is lowered to fix the roller holder and disable the left and right sliding operations.

1 to 3 and 7, shaft portions 11a and 11b extending from both side surfaces of the pinion 11 are rotatably supported by bearings 12 fixed on the roller holder 2. . The pinion 11 meshes with a gear 13 attached to the eccentric roller pin 5, and together with this gear constitutes a center-to-center fine adjustment device for the guide roller 3. Shaft 11a
By rotating the pinion 11
Rotates, and along with this rotation, the gear 13 also rotates, and fine adjustment between centers is achieved. Further, a hole 11c is formed in the shaft center of the pinion 11, and a spring 15 (a coil spring in the illustrated example) is built in the hole. One end of the spring 15 penetrates the cylindrical shaft portion 11b and is in contact with one end of the shaft 14 which is slidable in the hole 11c with a predetermined spring force. Therefore, when the roller holder 2 slides, the pinion 11 moves using the shaft 14 as a guide. When the pair of roller holders 2 slide toward each other, the spring 15 is compressed, and when the pair of roller holders 2 slides away from each other, the springs return to their original state. 16 is a bush, and one end of this bush is the shaft portion 11 of the pinion 11.
The shaft portion 11b is inserted into the shaft 11b by welding the other end side.
Fixedly connected to. Shaft 14 and bush 1
The hole 16a provided in the shaft center portion of 6 has a non-circular cross section, for example, a hexagon, and can be rotated by the rotation operation of the pinion 11. Therefore, the hole 11 of the pinion 11
c is a round hole that is easy to machine and has a good structure.

Next, a method of using the position fixing device of the present invention will be described together with a method of using a roller guide. First, the clamp cylinder 10 is driven to move the clamp bar 9 upward from the fixed position shown in FIG. 4, and as shown in FIG.
a and 2a1 and both roller holders 2 at the same time
Unlock the. After the roller holder 2 is slidable to the left and right in this way, the left and right screw holders 7 shown in FIG. 1 are rotated to move the left and right roller holders 2 toward and away from the opposite side. The distance between the roller holders is made to correspond to the width dimension of the rolled material by performing the center distribution function. If necessary, the distance between the guide rollers 3 is finely adjusted by using the gear 13 and the pinion 11. Next, the clamp cylinder 10 is driven to move the clamp bar 9 downward from the release position shown in FIG. 5 so that the clamp bar 9 is engaged with the inner bottom portions of the engaging grooves 2a, 2a1 as shown in FIG. Is fixed so that the roller holder 2 cannot slide left and right. After fixing, rolling work is started. In this way, the movable portion 10a of the clamp cylinder 10
By moving up and down, the pair of roller holders 2 are simultaneously set to the fixed or movable state by the clamp bar 9.

[0011]

According to the present invention, the clamp bar extending above the left and right roller holders is adapted to fix the roller holders at the same time. Therefore, the upper portion of the roller holders due to the reaction force from the rolled material is adopted. Opening and twisting of the roller can be prevented more reliably than in the conventional example, which can improve the tying property, prevent the roller guide from being damaged, and keep the maintenance cost low. The deformation of the moving part can be suppressed, and the intercenter adjustment of the guide roller can be smoothly performed when changing the mold.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view showing an embodiment of the present invention.

FIG. 2 is a front view showing an embodiment of the present invention.

FIG. 3 is a plan view showing an embodiment of the present invention.

FIG. 4 is an enlarged cross-sectional view showing a fixed state of the roller holder by the clamp bar according to the embodiment of the present invention.

FIG. 5 shows a state in which the roller holder is released from being fixed by the clamp bar according to the embodiment of the present invention (released state).
It is an expanded sectional view showing.

FIG. 6 is an enlarged cross-sectional view showing a mounted state of a clamp bar.

FIG. 7 is a partially cutaway enlarged plan view showing an attached state of a pinion.

[Explanation of symbols]

1 guide box 1a Top plate 2 roller holder 2a Engagement groove (engagement part) 2a1 Engagement groove (engagement part) 3 guide rollers 4 Guide roller 7 screw spindle 9 Clamp bar Cylinder for 10 clamps 10a movable part A position fixing device B Roller guide R rolling roll

Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B21B 39/14

Claims (4)

(57) [Claims] 1. A roller guide provided with a pair of roller holders provided in a guide box and a center distribution mechanism for distributing both roller holders to the left and right from the center, the upper part of the roller holder. The engaging bar provided on the roller holder, the clamp bar arranged above both roller holders, and the clamping cylinders arranged above the roller holders, respectively. A position fixing device for a roller holder in a roller guide, characterized in that the position is fixed to a tip of a movable part of a clamp cylinder located above it and can be engaged with and disengaged from the engaging part. 2. The position fixing device for a roller holder in a roller guide according to claim 1, wherein the engaging portion is an engaging groove, and the lower portion of the clamp bar is freely engageable with the engaging groove. . 3. The roller according to claim 1, wherein the engaging portion is an engaging protrusion, and a locking recess capable of engaging with the engaging protrusion is provided in a lower portion of the clamp bar. Position fixing device for the roller holder in the guide. 4. The engaging portion according to claim 1, wherein the engaging groove is an engaging groove, and the lower part of the clamp bar is engageable with the engaging groove, and the clamping cylinder is fixed on the top plate of the guide box. A device for fixing the position of a roller holder in a roller guide, which is characterized in that