JPS60104609A - Shearing machine - Google Patents

Abstract

PURPOSE:To prevent deformation of the cut section due to twisting by firmly supporting a part of the material to be cut which is advanced ahead of the cut section. CONSTITUTION:A movable stand 21 has four wheels 23 which rolls along a horizontal guide member 22 provided on a bed 10. The stand 21 is moved from side to side by operating a chain 25 using a drive mechanism (not shown in the diagram). The movable stand 21 moves along the lower part of the part of the material to be cut which is advanced ahead of the cut section, simultaneously with the movement of the cut section from the right to the left, and supports the advanced part of the material with the supporting device 20. After completion of cutting, the movable stand returns to the original position. In this manner, large defromation due to twisting during cutting of a plate with small width is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a shearing machine, and is particularly suitable for cutting an object to be cut, such as a metal plate, into a narrow plate.

Conventional/yearing machines have the disadvantage that when cutting a metal plate into long narrow plates, the narrow plates undergo large twisting deformations.

The present invention solves these problems and provides a shearing machine that hardly causes twisting deformation even when cutting into narrow plates.

An embodiment of the present invention will be explained below with reference to the drawings.
invent.

In one embodiment of the present invention shown in the figure, 10 is a bed of a shearing machine, and the upper surface is a table 12 on which the object to be cut, such as a metal plate, is placed. The extending fixed blade body 13 is the attachment. Reference numeral 15 denotes a beam that can be raised and lowered, for example, by mechanically swinging or by other means, and has a movable blade 16 extending laterally at its lower end. The movable blade weight 6 and the fixed blade body 13 have a certain angle in the lateral direction with respect to each other, so that when the beam 15 descends, it moves from the right side to the left side in FIG. It is designed to cut from one end to the other, similar to scissors.

The angle between the fixed blade body 13 and the movable blade body 16 can be set to 'fJ'4 fj1'i by means not shown.

20 indicates the support device as a whole. This support device has a movable base 21, and four wheels 2 that roll along a horizontal guide member 22 provided on the movable base (bed 10).
3, and is adapted to move from side to side by operating a chain 25 from a drive means (not shown).

In Fig. 1, when the cutting part moves from the right side to the left side, the cutting part moves in the same direction along the lower part of the object that has advanced from near the cutting part, and returns after the cutting IDr is completed. There is. 26 are connected to hydraulic power sources (not shown) in which cylinders 27 are arranged on both sides of the movable base 21 so as to extend upward, and operate independently of each other.
A pair of hydraulic operating devices each have a ram 28 that projects upward and whose upper end is rotatably connected to both sides of a support base 30 by a pin 29.

31 is a large number of rollers rotatably mounted on the upper part of the support base 30 in line with the moving direction of the movable base 21; 3 and 2 are rollers that pass through the center of the movable base 21 in the vertical direction to a plurality of trochanters 33; It is a guided support column, and its upper end is connected by a shaft 35 so that the support base 30 can be rotated left and right within a predetermined angular range.

The chain 25 is driven via a transmission (not shown) in order to synchronize the moving speed of the cutting section when changing the angle of the movable blade 16 with respect to the fixed blade 13.

In the configuration as described above, a metal plate (not shown) to be cut is placed on the table 12, and the beam 15 is lowered with the tip to be cut advanced from the fixed blade 13. The fixed blade body 13 and the movable blade body 1 move
6, the metal plate is cut from right to left in FIG. It firmly supports the part of the metal plate that has advanced beyond the cut part where the metal plate is torn off, and generates strong pressure to provide complete support when supporting the part of the metal plate that has moved forward from the cut part of the metal plate. be. After cutting in this manner, the beam 15 rises and the movable table 21 returns to its initial position.

As described above, in this invention, the movable blade 16 is inclined with respect to the fixed blade 13 and descends at a certain angle, and the part advanced from the vicinity of the cutting part of the object is reliably cut. Since the supporting device 20 that moves to support the strip is provided, it has the effect that only straight strips that do not cause twisting deformation or the like can be obtained when cutting into narrow strips.

In addition, in this invention, in order to obtain the supporting force of the support base 30, a pneumatic operation device or a mechanical spring may be used instead of using a hydraulic operation device.

Further, the supporting force need not be constant, but may be reduced in response to the cutting pressure which becomes relatively small at the beginning and end of cutting.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of one embodiment of the present invention as seen from the side from which the workpiece to be cut is delivered, FIG. 2 is a longitudinal sectional view showing its support device, and FIG. 3 is a side view thereof. 10 is a bed, 12 is a table, 13 is a fixed blade, 15
1 is a beam, 16 is a movable blade body, 20 is a support device, 21 is a movable base, 22 is a guide member, 25 is a chain, 26 is a hydraulic operating device, 30 is a support base, and 31 is a roller. Agent Patent Attorney Akira Katsabe

Claims (1)

[Claims] ■ A fixed blade placed at the tip of the table and extending laterally, and a support device placed at the lower end of the beam that can be raised and lowered, and which is attached to one end of the object to be cut when the beam is lowered. A shearing machine characterized by containing. 2. The yearling machine according to claim 1, wherein the supporting device includes a movable table that is movable laterally;
A shearing machine characterized in that a support means that can be raised and lowered with respect to the movable table is provided. 3. The shearing machine according to claim 1 or 2, wherein the support device includes a support stand disposed at an upper end portion, and a rotation function arranged in the moving direction of the support device above the support stand. A shearing machine characterized by being provided with a large number of rollers supported by. 4. The shearing machine according to claim 1, 2, 2, or 3, wherein the support device has a support stand disposed at an upper end, and the support stand is arranged in the direction of movement of the support device. A shearing machine characterized by being able to rotate within a certain angle range around a horizontal axis perpendicular to the . 5. The shearing machine according to claim 4, wherein at least two fluid pressure operating devices are provided on the support base, each connected to both sides of the shaft to raise and lower the support base. It is characterized by Tosrun Yarling Mazon. 6. The seven-year ring mannequin described in claim 1, comprising: means for adjustably changing the angle between the movable blade body and the fixed blade body; and a transmission device capable of changing the transfer speed of the support device. Nyarinoguma 7 no, which has Kokichi with -he 1- 'i, 7 signs.