JPS6325056Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention uses a rolled product such as a bar or wire rod, especially a thick steel bar, as a covering material, and separates and collects the crops sheared from the leading and trailing ends, especially the trailing end crops. Concerning a shearing machine equipped with a cutter.

One of the main objectives is to reduce the occurrence of bending at the ends of sheared materials sheared from thick bars.A flap is installed behind the shearing machine pass line and the flap is moved up and down the pass line at high speed. A shearing machine for cropping the leading and trailing ends was disclosed in the applicant's earlier application, Japanese Patent Application No. 58-31453 (Japanese Unexamined Patent Publication No. 58-31453).
156611). The present invention attempts to process the rear end crop using a kicker without relying on flap operation.

In the past, in a shearing machine that rotates the upper and lower cutter holders during shearing, a kicker was fixedly attached to a part of the cutter holder, and when the rear end crop was sheared, the cutter would kick the sheared crop downward. There is equipment that guides the user in the opening direction of a predetermined crop shoot. However, with this equipment, when shearing the leading and trailing ends and dividing the crop in the middle, two pass lines are used, and the pass line is changed using a V-shaped selector, etc., and the sheared material itself is shifted. However, it was necessary to move the shearing machine itself in a direction perpendicular to the pass line.

In the case of shifting the former pass line, the width of the cutter holder becomes particularly large, and as a result, the GD ² of the holder becomes large in high-speed finishing shears, requiring an increase in motor capacity and increasing the size of the equipment. In addition, since the product is shifted, there is a high possibility that a straight bar will be bent or scratched.
In order to prevent these problems from occurring, the latter method of shifting the shearing machine itself is effective, but in this case it is difficult to shorten the switching time since it involves moving a fairly heavy object.

The present invention has been made to solve the above-mentioned difficulties by shifting the kicker itself. In other words, the kicker can be shifted without interfering with the operating mechanism for shearing, and when shearing the rear end crop, the kicker is moved to the kicking position associated with the cutter and the rear end crop is turned, and during other shearing, the kicker is inactivated. Try to move it into position.

In order to enable the above operation, the shearing machine with a shiftable cutter of the present invention has an upper blade holder and a lower blade holder on the upper and lower blade shafts, which rotate in opposite directions, respectively. In this device, the material to be sheared is sheared when the upper and lower blades attached to their respective holders intersect, and a kicker arm with a cutter at the tip is attached to the upper blade blade holder with an axis perpendicular to the vertical line of the upper blade. The opposite end of the kicker arm is connected to a slider that is pivotally supported at the base and is provided on the outer periphery of the upper blade axis so that it can rotate and slide relative to the upper blade axis. It is characterized in that it is provided with a shift yoke for a dynamic bundle, and that the shift yoke is linked to the other end of a lever that is pivotally supported on a frame so as to be tilted by a cylinder.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be explained in detail below with reference to embodiments shown in the accompanying drawings. FIG. 1 shows a partial longitudinal sectional front view of the upper and lower blade shafts of a shearing machine according to an embodiment of the present invention, and FIG. 2 shows a side view thereof. In this shearing machine, in order to perform a shearing operation, an upper blade shaft 2 and a lower blade shaft 2' are mounted on a frame 1 and are opposed to each other under horizontal axes X and X' as shown by arrows A and A'. Knife-edge-shaped upper blade 4 and lower blade 4' are installed in an upper blade holder 3 and a lower blade holder 3', which are equipped to be synchronously rotated in the direction and are fixedly attached to the upper blade shaft 2 and the lower blade shaft 2', respectively. is installed, and when shearing the continuous rod-shaped material B that is transferred and passes through the pass line P between them, the upper blade 4 and the lower blade 4' are driven one rotation from the standby position, and during that time the double blades are rotated as shown in Fig. 2. The rod-shaped B is sheared by intersecting 4 and 4'.

In the present invention, the kicker arm 6 having the kicker 5 at the tip is attached to the upper blade holder 3.
The upper blade is pivoted by a shaft 7 on an axis perpendicular to the vertical line. The kicker 5 protrudes from the cutting edge of the upper blade holder 3 and is arranged so as to intersect with the pass line P and turn.

In this way, the kicker 5 is able to strike downwardly the rear end crop _B1 which has been sheared by the pad 8 attached below. Although it is not directly related to the shift mechanism of the kicker 5, a fitting part 9 is provided between the blade holder 3 and the kicker 5 to prevent the impact of the butt part of the kicker from being directly transmitted to the shaft 7 of the kicker. Efforts are being made to ease the situation. Kitzker Arm 6 Kitzker 5
The opposite end is formed into a fork-shaped end 10 having a U-shaped groove.

A slider 11 is provided on the outer periphery of the upper blade shaft 2 so as to be able to rotate relative to the upper blade shaft 2 and slide in the axial direction via a bush 12 and a sliding key 13, and a cam follower 15 at the tip of a shift arm 14 extending from the slider 11 is fitted into the U-shaped groove of the fork portion 10 of the kicker arm 6 to connect the two.

On the outer periphery of the slider 11, a shift yoke 16 is rotatable relative to the slider 11 via a bearing 17 and is incorporated into an axial sliding bundle. The shift yoke 16 has cam followers 1 on the left and right.
8 is provided protrudingly.

A lever 20 having a U-shaped oak portion 19 formed at its lower end to fit with the two left and right cam followers 18, respectively, is pivotally supported on the frame 1 by a bearing 21 at its upper portion. Since the shift yoke 16 is bundled by the fork portion 19 at the lower end of the lever 20, it does not rotate while the blade shaft 2 is rotating, similar to the shifter of a clutch brake.

Further above the fulcrum of the lever 20 is this lever 1.
9 is connected to a cylinder 22 that tilts the cylinder 9.

In the device of the present invention having the above configuration, the slider 11 rotating together with the upper blade shaft 2 and the upper blade blade holder 3 moves in the axial direction due to the thrust transmitted to the shift yoke 16 via the lever 20 by the operation of the cylinder 22. The kicker arm 6 is tilted via the cam follower 15 of the shift arm 14 to shift the kicker 5.

When shearing the rear end crop B ₁ , the kicker 5
Shift the upper blade 4 to position 5K shown by the solid line in Figure 1.
position behind the rotation area. This corresponds to the state in which the picker 5 is installed, and the rear end crop _B1 sheared by the upper and lower blades 4, 4' is kicked downward and separated and collected.

On the other hand, when shearing the tip end crop or dividing the cutting shear, the kicker 5 is shifted to a position 5L shown by a dashed line in FIG. This corresponds to a detached state of the kicker 5, and the kicker 5 has no effect. In this embodiment, the processing of the tip crop is carried out by reversing the flap of the previous application, and the cam 23, follower 24, follower 24 in the figure are
5 trigger lever, 26 trigger with locking groove, 27
The cylinder is a part of the structure for this purpose.

The kicker arm 6 can also be guided by the upper blade holder 3 and moved in parallel to the pass line P, as shown in FIG.

According to the present invention having the above structure and operation, by using a shiftable cutter device and a knife edge blade, it is possible to shear rolled bars, especially high-grade steel, with less bending at the sheared end. becomes. Furthermore, the fact that the pass line does not need to be changed also improves the shearing result. Furthermore, compared to conventional equipment in which two pass lines are provided, one with a kicker and one without a kicker, the device of the present invention can be made smaller and has the advantage of requiring a smaller motor capacity.

[Brief explanation of the drawing]

FIG. 1 is a partial longitudinal sectional front view of the upper and lower blade shafts of a device according to an embodiment of the present invention, FIG. 2 is a side view thereof, and FIG. 3 is an enlarged side view of related parts of the hard lever mounting portion.
FIG. 4 is a partial longitudinal sectional front view of the slider on the upper blade shaft and the shift yoke portion, and FIG. 5 is a partial vertical sectional side view of the same, further including the lever. FIG. 6 shows another example of a moving mechanism for the kicker arm 6. 1... Frame, 2... Upper blade shaft, 2'... Lower blade shaft, 3... Upper blade blade holder, 3'... Lower blade blade holder, 4... Upper blade, 4'... Lower blade, 5...
...Kitsuka, 5K...Kitsuka installation position, 5L...
... Kitzker detachment position, 6 ... Kitzker arm, 7
...Shaft, 8...Butt, 9...Fitting part, 10
...fork-shaped end, 11 ... slider, 12 ...
...Button, 13...Sliding key, 14...Shift arm, 15...Cam follower, 16...Shift yoke, 17...Bearing, 18...Cam follower, 19...U-shaped fork, 20...Lever, 21 ... Bearing, 22 ... Cylinder, 23 ...
Cam, 24... Follower, 25... Trigger lever, 26... Trigger with locking groove, 27... Cylinder, X, X'... Axis line, A, A'... Rotation direction arrow,
P...pass line, B...bar-shaped material, _B1 ...rear end crop.

Claims (1)

[Scope of utility model registration request] A pair of rotating shafts supported horizontally and parallel to each other above and below the pass line of the sheared material are provided in a direction perpendicular to the pass line, and each of the upper and lower rotating shafts has an upper blade with a cutting edge at the tip. In a shearing machine that is equipped with a blade holder and a lower blade holder to shear the material to be sheared when the upper and lower blades intersect, a cutter is attached to the upper blade shaft to scratch the end of the sheared trailing crop. It is installed on the shaft extension part of the working side of the blade holder so that it rotates in parallel with the upper blade holder, and
A shiftable device that is characterized by being able to move the knife forward and backward in a direction perpendicular to the pass line by shifting a slider that is rotatable on the upper blade shaft and slides on the shaft in a direction perpendicular to the pass line via a lever using a cylinder. A shearing machine with a sharp cutter.