JPS6144609B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a splitter line for steel strips.
This invention relates to a longitudinal cutting device for steel strips for obtaining two strips of any desired width and exact width.

Conventionally, in order to divide a steel strip into two strips of accurate width, a so-called slitter is used, in which a sleeve-shaped spacer is inserted between knives to set the required slit width. However, when using such a conventional method, it is necessary to remove the knife, rubber ring, ring holder, and cylindrical spacer from the terminal of the arbor each time when setting the slit width, and such rearranging operations are difficult. This method requires a considerable amount of time and, of course, has the disadvantage that the line operation must be stopped during such a rearrangement operation, which considerably reduces the operating rate of the line.

On the other hand, in order to avoid the above-mentioned drawbacks, it has been conventionally possible to obtain two strips of any desired width by placing a splitter with a pair of cutters that can move arbitrarily in the width direction after the side trimmer. However, with this method, the side trimmer knife and splitter knife are not on the same axis, so the strip moves sideways, or the strip is bent, making it impossible to obtain a product with the correct width. .

The object of the present invention is to provide a splitter that can obtain two strips of accurate width and quickly change the setting of the desired width by arranging three knives on the same axis and making the knives on both sides and the center movable. The goal is to provide equipment.

The present invention will be explained below based on the illustrated embodiments.

As shown in FIGS. 1, 2, and 3, the stands 1 and 1a are equipped with a mechanism described later, and the stand shift mechanism (motor 3, shift screw 4, and stand shift mechanism (motor 3, shift screw 4, and The stand 1 is mounted so that it can be moved forward or backward by a nut 5 fitted thereinto, and the positioned stand 1 is fixed to the slide base 2 by a stand clamp 6. The drive shaft 7 for rotating the knife is connected to a drive reducer 10 via an intermediate coupling 8 and a gear coupling 9.
and a main drive motor 11. Among the opposing knives, the upper knife is driven from the drive shaft 7 through a gear 12, an intermediate gear 13, and an upper blade gear 14, and the lower knife is driven through a gear 12 and a lower blade gear 15.

Next, according to Figure 4, stand 1 on the work side.
The internal mechanism of (drive side stand 1a) will be explained in detail. The lower trim knives 21, 21a are attached to hollow knife support shafts 22, 22a with bolts and nuts, and the knife support shaft 22 is attached to bearings 23, 2.
4, it is rotatably fixed to the stand. As described above, the knife support shaft 22 is driven via the lower blade gear 15. The knife support shaft 2
The main shafts 25, 25a are slidably inserted into the hollow portions of the main shafts 2. In the illustrated embodiment, the main shaft 25 is a shift mechanism (worm 26,
A worm wheel 27 and a screw 28) provide means for independently moving forward or backward relative to the stand via a thrust bearing 29. Since the main shaft 25 and the knife support shaft 22 are connected by a sliding key 64, the lower blade gear 1
Needless to say, it is driven via the motor 5.

The lower split knife 30 is attached to a central shaft 31 with bolts and nuts, and both ends of the central shaft 31 are supported and connected to the aforementioned main shaft 25. Main shaft 2
5 and the central shaft 31 may be connected as long as they can maintain the same axis and transmit rotation, and are not limited to the illustrated example. In the embodiment, the main shaft 25 has a tapered male shape, and both ends of the central shaft 31 have tapered female shapes, and are connected to the drive side main shaft with a bolt 32 and can be driven with a key 33.

Upper trim knife 41 and upper split knife 42
Also, except for the clearance adjustment mechanism and wrap adjustment mechanism of the cutter described below, the support mechanism has the same structure as the lower cutter, and the presence or absence of the clearance adjustment mechanism and wrap adjustment mechanism, and the method thereof, are limited to the scope of the present invention. It's not something you do.

The upper trim knife 41 has a hollow knife support shaft 6.
5. It is rotatably held in a chock 45 by bearings 43 and 44. The knife support shaft 65 can be slightly moved in the axial direction by a clearance adjustment mechanism (consisting of a motor 46, a worm wheel 47, and a screw 48) provided on the chock, so that the clearance of the knife can be adjusted. Further, as described above, the knife support shaft 65 is driven via the upper blade gear 13. Further, a main shaft 49 is slidably inserted into the hollow part of the knife support shaft 65, and the main shaft 49 is moved by a shift mechanism (consisting of a motor, a wall 50, a worm wheel 51, and a screw 52) attached to the chock 45. ,
It has means for independently moving forward or backward relative to the chock 45 via a thrust bearing 53. Needless to say, the main shaft 49 and the knife support shaft 65 are connected by a sliding key 54 and driven via the upper blade gear 12.

The upper split knife 42 is attached to a central shaft 55 with bolts and nuts, and the central shaft 55 is supported and connected to the main shaft 49 at both ends. Similar to the lower split knife 30, the central shaft 55 is connected to the main shaft 49 on one side with a bolt 56 and a key 57. In addition, the chock 45 is attached to the stand 1 so as to be movable up and down, and the lap adjustment mechanism (motor 61, wall wheel 62,
(consisting of a screw 63), it can be arbitrarily positioned vertically.

According to the above structure according to an embodiment of the present invention,
The distance between the trim knives on the work side and the drive side can be set by arbitrarily determining the position of the stand 1, and the position of the central split knives 30, 42 can be adjusted, for example, by advancing the main shaft on the work side and adjusting the drive side. Since it can be moved to the work side by retracting the side main shaft, it is possible to set the dimensions of two strips of any desired width in a short time. Also, when replacing the cutter, the main shaft and center shaft can be separated by retracting both the work side and drive side main shafts, so by appropriately selecting the hole diameter of the trim knife and split knife, this separation can be easily It becomes possible to easily exchange old and new cutlery from the space.

Although the present invention has been illustrated and described with reference to one embodiment, it is of course possible to make appropriate changes without departing from the scope of the present invention.

As another embodiment of the means for independently advancing or retracting the main shaft with respect to the stand, a shift mechanism (worm 26, worm wheel 27, screw 28) for moving the main shaft 25 may be attached to the base instead of the above-mentioned moving stand 1. There is a means of attaching it directly to a fixed fixed stand. This method has the effect that the position of the main shaft can be set completely independently of the moving stand 1. This example will be explained based on FIGS. 5 to 8.

As shown in the figure, a shift mechanism (worm 26, worm wheel 27, screw 28) for moving the main shaft 25 is fixed to fixed stands 101, 101a independent of the stands 1, 1a. Main shaft 4
9 (consisting of a worm 50, a worm wheel 51, and a screw 52)
is attached to a chock 102 that is fitted onto the stands 1, 1a so as to be movable up and down. The chock 102 is equipped with a lowering mechanism 103 which can be operated simultaneously with a clearance adjustment mechanism so as to move up and down in synchronization with the chock 45. According to this embodiment, the position of the main shaft can be set completely independently of the moving stands 1, 1a.

As explained in the embodiments above, according to the present invention, the width of three blades on the same axis can be set in a short time, so it is possible to obtain two strips of accurate dimensions with any desired width. , which is extremely useful in industry.

[Brief explanation of the drawing]

Fig. 1 is a front view showing an embodiment of the splitter device of the present invention, Fig. 2 is a plan view of Fig. 1, Fig. 3 is a side sectional view taken along line A--A in Fig. 5 is a front view showing another embodiment of the present invention, FIG. 6 is a plan view of FIG. 5, FIG. 7 is a side view of FIG. 5, FIG. 8 is a longitudinal sectional view showing partial details of the device of FIG. 5. FIG. 1, 1a...Stand, 2...Slide base, 7
... Drive shaft, 12-15 ... Gear, 21 ... Lower trim knife, 22 ... Knife support shaft, 25 ... Main shaft, 30 ...
Lower split knife, 31...Central axis, 41...Upper trim knife, 42...Upper split knife, 45...
49...Main shaft, 55...Central shaft, 65...Knife support shaft.

Claims (1)

[Claims] 1. A plurality of stands connected to a drive device and capable of reciprocating movement in order to adjust the setting interval are arranged next to each other on a base, and each stand is provided with a hollow hollow body with a trim knife attached to the outer periphery. A plurality of knife support shafts are arranged to be rotatable up and down, a main shaft is fitted into the hollow knife support shaft, a split knife is attached to the main shaft portion located in the middle of the arrangement of the stands, and the main shaft is connected to an advancing/retracting device. A splitter device, characterized in that the main shaft can be moved independently of the stand by being connected to the stand. 2. A plurality of stands connected to the drive device and capable of reciprocating movement in order to adjust the setting interval are installed next to each other on the base, and a hollow knife support shaft with a trim knife attached to the outer periphery is attached to each stand up and down. A plurality of parts are rotatably arranged, and a separate main shaft is fitted to each of the middle knife support shafts, and a central partial shaft equipped with a split knife is removably supported between the opposing main shafts, and the main shaft moves back and forth. A splitter device, characterized in that the main shaft and the central shaft are movable while connected to the device and independent of the stand.