JPH0555246B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a shearing machine, and more particularly to a shearing machine in which a workpiece is supplied from above to a shearing section using a fixed blade and a movable blade. Regarding.

(Prior art) Conventional shearing machines are, for example,
As shown in Publication No. 89980, a lower blade (fixed blade) is installed horizontally on the back side of a work table provided horizontally on a frame, and an upper blade works in cooperation with the lower blade to shear the workpiece. The (movable blade) is generally attached to the lower part of a ram that is attached to the frame so as to be able to move up and down.

(Problems to be Solved by the Invention) In the conventional shearing machine as described above, a workpiece placed horizontally on a work table is fed between the lower blade and the upper blade, and the part to be sheared and separated from the workpiece is separated by the lower blade. Protrude further to the rear for positioning. Then, by lowering the upper blade, the sheared pieces are sheared and separated from the workpiece.

When the sheared piece is sheared and separated from the workpiece as described above, an upward burr is generated at the front end of the sheared piece, and a downward burr is generated at the rear end of the workpiece. That is, when the sheared pieces are successively sheared and separated from the workpiece, an upward burr is generated at the front end of the sheared piece, and a downward burr is generated at the rear end of the sheared piece. Therefore, when an attempt is made to transport the sheared pieces backwards and accumulate them, the downward burr at the rear end of the next sheared piece that is to be accumulated comes into contact with the upper surface of the previously accumulated sheared pieces, causing scratches. There is a problem.

(Means for Solving the Problems) In view of the above-mentioned conventional problems, the present invention has the following features:
A ram equipped with a movable blade that shears the workpiece in cooperation with a fixed blade horizontally fixed to the frame is provided so as to be reciprocally movable, and the workpiece is supplied from above to a shearing section using the fixed blade and the movable blade. A shearing machine is provided with a workpiece feeding device above the shearing section, and a cutting width gauge is provided in the shearing machine, which can freely contact and support the lower end of the workpiece fed to the shearing section by the workpiece feeding device. The position can be freely adjusted in the direction of approaching and away from the shearing part,
A cut work accumulating device that accumulates the cut work pieces on a side where the upper part of the cut work pieces, which are sheared and separated from the work pieces when the work pieces are sheared by cooperation between the fixed blade and the movable blade, is pushed and brought down by the movable blades. It is made by arranging.

(Function) In the above configuration, when a workpiece is supplied from above to the shearing section using the fixed blade and the movable blade, the lower end of the workpiece is supported in contact with the cutting width gauge and positioned. After positioning the workpiece, the ram is activated to shear the workpiece using the fixed blade and the movable blade.

When the workpiece is sheared as described above, the upper end of the cut workpiece that is sheared and separated from the workpiece is pushed by the movable blade, and is thrown down in the direction in which it is pushed. When the cutting workpiece falls down in this way, the burr on the end side of the cutting workpiece pushed by the movable blade faces upward. In addition, since the accumulating device is placed on the side where the cut workpieces are toppled over, when the cut workpieces are stacked, the burr does not come into contact with the top surface of the cut workpieces that have been accumulated in advance, thereby preventing the occurrence of scratches. It becomes possible.

(Embodiment) The shearing machine 1 according to the embodiment of the present invention shown in FIGS. 1 and 2 has a fixed blade 7 substantially horizontally mounted on the lower edge of the upper horizontal ceiling beam 5 of the gate-shaped frame 3. There is. The workpiece W works in cooperation with the fixed blade 7 above.
The movable blade 9 that performs the shearing is attached to a ram 11 that is reciprocally movable toward and away from the fixed blade 7 by a drive device (not shown).

A plate holder 15 is provided at the top of the ram 11 and is biased by a bullet 13. The plate holder 15 presses the workpiece W, which is a plate material to be sheared, between the fixed blade 7 and the ceiling beam 5 and keeps it immobile during cutting. Fixed in state.

Further, above the ram 11, there is provided a workpiece feeding device that supplies the workpiece W from above to the shearing section formed by the fixed blade 7 and the movable blade 9, and above the ram 11, there is provided a workpiece feeding device for guiding the descending of the workpiece W. A suitable number of guide rollers 17 are provided, and a cutting width gauge 21 is provided below the movable blade 9, the position of which is adjusted in the direction toward and away from the shearing part by an electric motor 19 such as a servo motor. be.

As is clear from FIG. 3, the cutting width gauge 21 is provided with protrusions 23 on the left and right sides in FIGS. 2 and 3.

A swing frame body 29 is provided at the middle height of the frame 3 described above, on both the left and right sides of FIG.

The tip of the arm 31 fixed to the yoke portion 25 of the swing frame 29 is driven by the piston rod 35 of the fluid pressure cylinder 33, and the swing frame 29 swings between the horizontal state and the vertical state shown in FIG. 2 and is positioned. .

A suitable number of vacuum cups 37 are provided on the swinging frame 29, and the link mechanism 39 attracts the topmost piece of the workpiece W on the workpiece mounting table 41, which can be raised and lowered in a horizontal position. Raise it to an almost vertical position.

A substantially horizontal belt conveyor 43 is provided at the mid-height position of the frame 3, and the end is held horizontally until late so that the cut workpiece W' protrudes above the stacked board material near the delivery end. Lower pressure rollers 45, 45 are provided.

Shown at the left end of FIG. 2 is an accumulating cart 47 of a cutting work accumulating device for accumulating cutting works W'.The height of the top surface of the table is adjustable by a link mechanism 49. The distance from the stopper 53 can be set according to the length of the cutting workpiece W' depending on the entry position.

Furthermore, what is placed below the movable blade 9 under the frame 3 is a scrap box 55 and its cart 5.
7.

The shearing machine 1 described above operates as follows.

Workpieces W such as regular length materials are stacked on a cart 41 and positioned directly below the swinging member 29 of the shearing machine 1 when it is horizontally positioned.

The table of the cart 41 is raised by the link mechanism 39, and negative pressure is applied to the vacuum pack 37 to move the workpiece W.
When the fluid pressure cylinder 33 is expanded,
The topmost piece of work W is held in a substantially vertical position as shown in FIG.

When the distance from the lower surface of the fixed blade 7 to the upper surface of the cutting width gauge 21 is set to a desired dimension by the electric motor 19 and the negative pressure of the vacuum cup 37 is released, the workpiece W descends by its own weight and is guided to the guide roller 17. and descends until it comes into contact with and is supported by the upper surface of the cutting width gauge 21.

If the ram 11 is driven leftward at this point, a burr D will be formed on the cut surface that remains uncut, and a burr B will be formed on the cut surface that has been cut off, as shown in an exaggerated manner in FIG.

When the cut workpiece W' is sheared and separated from the workpiece W as described above, the upper part of the cut workpiece W' is pushed by the movable blade 9, falls down in the direction of the arrow in FIG. 3, and rides on the belt conveyor 43. . That is, the cutting workpiece W' is laid down so that the burrs on the side facing the cutting workpieces that have been accumulated in advance are directed upward.

Therefore, at the collection point, the preceding cutting work
Since the rounded part contacts the middle part of W', the burr of the cutting workpiece W' does not come into contact with the upper surface, and no scratches are caused on the upper surface.

(Effects of the Invention) As can be understood from the above description of the embodiments, in short, the present invention includes a movable blade 9 that shears the workpiece W in cooperation with a fixed blade 7 horizontally fixed to the frame 3. A ram 11 is provided that can freely reciprocate,
The shearing machine is equipped with a work supply device above the shearing section that supplies the workpiece W from above to the shearing section using the fixed blade 7 and the movable blade 9. A cutting width gauge 21 capable of contacting and supporting the lower end of the workpiece W supplied to the shearing section is provided so that its position can be freely adjusted in directions approaching and separating from the shearing section, and the position between the fixed blade 7 and the movable blade 9 is adjusted. A cutting work accumulating device for accumulating the cutting work W' is provided on the side where the upper part of the cutting work W', which is sheared and separated from the work W by collaboration, is pushed and brought down by the movable blade 9. It is something that is arranged.

As is clear from the above configuration, the present invention relates to a shearing machine of a type in which a workpiece W is supplied from above to a shearing section using a fixed blade 7 and a movable blade 9, and the workpiece W is supplied to the shearing section. A cutting width gauge 21 whose lower end can be freely abutted and supported is provided so that its position can be freely adjusted in directions approaching and away from the shearing section. Then, when the fixed blade 7 and the movable blade 9 cooperate to shear the workpiece W, the upper part of the cutting workpiece W', which is sheared and separated from the workpiece W, is pushed and brought down by the movable blade 9, and the cutting workpieces are accumulated on the side. The equipment is in place.

Therefore, according to the present invention, the cutting workpiece W' is tilted so that the burr generated on the upper end side of the cutting workpiece W' faces upward during shearing by the fixed blade 7 and the movable blade 9, and The cutting work accumulating device is placed on the side where the cutting work is toppled over.
When stacking W', the burr does not come into contact with the upper surface of the cut workpiece W' that has been stacked in advance, and scratches caused by the burr can be prevented.

[Brief explanation of the drawing]

FIG. 1 is a side view of one embodiment of the present invention, FIG. 2 is a front view and a partial sectional view of FIG. 1, and FIG. 3 is an explanatory diagram showing the operation of the present device. Explanation of the symbols representing the main parts of the drawings, 1... Shearing machine, 7... Fixed blade, 9... Movable blade, 1
1... Ram, 21... Cutting width gauge.

Claims (1)

[Claims] 1 A shearing section comprising a ram 11 reciprocably equipped with a movable blade 9 that shears the workpiece W in cooperation with a fixed blade 7 horizontally fixed to the frame 3, and a shearing section using the fixed blade 7 and the movable blade 9. A shearing machine comprising a work supply device for supplying the work W from above to the shearing section above the shearing section,
A cutting width gauge 21 capable of freely abutting and supporting the lower end of the workpiece W supplied to the shearing section by the workpiece supply device is provided so as to be adjustable in position in directions approaching and away from the shearing section; When the workpiece W is sheared by the cooperation between the blade 7 and the movable blade 9, the upper part of the cutting workpiece W', which is sheared and separated from the workpiece W, is pushed by the movable blade 9 and the cutting workpiece W' is placed on the side where it is pushed down. A shearing machine characterized by having a cutting work accumulating device arranged to accumulate cutting workpieces.