JP2012035362A - Cutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cutter A capable of neatly finishing a cut surface by inhibiting a rupture of a cut end even in the case of a long thin workpiece W.SOLUTION: The cutter A cuts off the thin workpiece W by making a movable blade 2 cross a fixed blade 1 while swinging the movable blade 2 relative to the fixed blade 1. A horizontal hole 34 is provided in the side wall surface 3A of a frame 3 provided with a blade attachment groove 32 for attaching the fixed blade 1, and a long hole 35 passing through the horizontal hole 34 is formed in the blade placing surface 33 of the blade attachment groove 32. A fastening bolt 11 passes through the long hole 35 from the horizontal hole 34 so as to be screwed into the fixed blade 1 placed on the blade placing surface 33. The fastening bolt 11 is fastened in a position in which the fixed blade 1 comes into contact with the movable blade 2 shifted to a workpiece cutting position, and the fixed blade 1 is fixed to the blade attachment groove 32 in the state of the absence of clearance between the movable blade 2 and the fixed blade 1 when the workpiece is cut off.

Description

  The present invention relates to a cutting machine that cuts a thin work by crossing while swinging a moving blade relative to a fixed blade.

  As this type of cutting machine, there is one configured to lower an upper blade (moving blade) while swinging with a shear angle, cross over a lower blade (fixed blade), and cut a workpiece (Patent Document). 1).

JP 2009-107096 A

By the way, it is extremely difficult to install a long upper blade with a long blade span so as to eliminate the clearance between the lower blade and the entire length. Therefore, even in the above-described cutting machine, when there is a clearance between the upper blade and the lower blade, the workpiece is bent due to the pressing of the upper blade and the lower blade at the time of cutting, and the cut edge is broken. A uniform and clean cut surface may not be obtained from one end to the other.
The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a cutting machine that is capable of finishing a cut surface with a cut end being suppressed even if it is a long thin workpiece. To do.

The cutting machine according to the present invention is
A cutting machine that cuts a thin workpiece by crossing while moving a moving blade relative to a fixed blade,
A horizontal hole is provided in the side wall surface of the frame provided with the blade mounting groove for mounting the fixed blade, and a long hole penetrating the horizontal hole is formed in the blade mounting surface of the blade mounting groove, and the tightening bolt is changed from the horizontal hole to the long hole. Screw the fixed blade that is passed through and fixed on the blade mounting surface, and tighten the tightening bolt at the position where the fixed blade contacts the moving blade moved to the workpiece cutting position. A configuration is provided in which the fixed blade is fixed to the blade mounting groove in a state where there is no clearance with the fixed blade.
With the above configuration, the fixed blade can be reliably and easily fixed to the blade mounting groove in a state where the movable blade and the fixed blade at the time of cutting the workpiece have no clearance over the entire length. Therefore, the pressure on the workpiece is suppressed at the time of cutting and the sharpness is improved, so that even a long thin workpiece can be prevented from being broken and the cut surface can be cleaned.

It is desirable that the long hole extends long toward the side wall surface side of the frame provided with the horizontal hole and is continuously opened from the blade placement surface to the horizontal hole with respect to the side wall surface.
In this case, the fastening bolt attached to the fixed blade can be seen through the open part of the long hole, so that the attached state of the fixed blade is easy to see. Moreover, since the tightening bolt can be disposed in the long hole through the open portion of the long hole, the fixed blade with the tightening bolt attached in advance can be easily set in the blade mounting groove. Moreover, the troublesome work of inserting the tightening bolt into the horizontal hole and then screwing it into the fixed blade disposed in the blade mounting groove through the elongated hole is not required. Accordingly, it is possible to more easily and reliably attach the fixed blade to the blade mounting groove in a state where there is no clearance between the movable blade and the fixed blade.

It has two links for supporting the movable blade with a shear angle so that it can swing.
Each of the two links is preferably connected by an adjusting screw that is divided into two so that the length can be adjusted and screw grooves having opposite screw directions are provided on the left and right.
Thereby, since each length of two links can be adjusted with an adjustment screw, the shear angle of a movable blade can be easily adjusted as needed. Therefore, the shear angle of the movable blade can be easily adjusted appropriately according to the material and thickness of the workpiece as the workpiece is changed.

A blade holder to which the moving blade is attached;
Below the blade holder is provided an elevator that can freely move the blade receiver of the moving blade,
The elevator is preferably configured such that the movable blade is placed on the blade holder and can be raised to the attachment position to the blade holder, and can be lowered to a lower position that does not interfere with the movable blade when the workpiece is cut.
Thereby, even a long movable blade can be easily and quickly attached to the blade holder. Further, by setting the elevator to the lower position, the elevator does not interfere with the moving blade, and the work cutting work is not hindered.

A blade holder to which the moving blade is attached;
The blade holder is suspended from the frame so that it can swing,
The frame is provided with receiving surfaces that are slidably contacted with both end portions on one side of the swinging blade holder, and an intermediate receiving portion that is slidably contacted with both surfaces of the intermediate portion of the blade holder. It is desirable to be provided.
As a result, the blade holder is swung in contact with each receiving surface and the intermediate receiving portion provided on the frame, so that the movable blade attached to the blade holder is crossed with the fixed blade without swinging back and forth. And even if it is a long movable blade, it is hold | maintained so that a movable blade may not bend, when it contact | abuts with a workpiece | work. Therefore, even a long workpiece can be cut straight, and the cut dimension of the workpiece can be made uniform from one end to the other end.

A blade holder to which the moving blade is attached;
It is desirable that the blade holder is swingably supported by two links, and a drive link for swinging the blade holder is connected between the two links.
As a result, the load applied to the blade holder when the movable blade comes into contact with the workpiece is received by the respective bearing portions of the two links and the drive link and distributed in three. Therefore, the movable blade is less likely to shake due to an impact when the movable blade comes into contact with the workpiece when the workpiece is cut.

  As described above, according to the cutting machine according to the present invention, even a long thin workpiece can suppress the breakage of the cut end and finish the cut surface neatly.

It is a front view showing the whole cutting machine composition by an embodiment. It is a side view which shows the principal part of the cutting machine by embodiment. It is a front view which shows the flame | frame of a cutting machine. It is a perspective view which shows the principal part of the window hole of a flame | frame.

Embodiments will be described below with reference to the drawings.
As shown in FIGS. 1 and 2, the cutting machine A according to the embodiment includes an upper blade (movable blade) 2 suspended at a predetermined shear angle α on the side wall surface 3A of the wall-shaped frame 3; A lower blade (fixed blade) 1 fixed to the frame 3 is provided below the upper blade 2, and the upper blade 2 is lowered while swinging so as to cross relative to the lower blade 1, whereby a thin workpiece W is moved. It is set as the structure cut | disconnected like drawing.

  A frame 3 for attaching the upper blade 2 and the lower blade 1 is formed of a casting or the like, and is erected on the machine base 30. Referring to FIG. 2, the upper blade 2 is a single-edged blade, and the blade edge angle θ <b> 1 is set in a range of approximately 30 to 45 degrees, preferably approximately 40 degrees. Further, the lower blade 1 is a square blade, the angle θ2 of the blade edge intersecting the upper blade 2 is set to an acute angle (for example, 85 degrees to 87 degrees), and the clearance angle β (for example, 3 degrees to about 3 degrees to the blade surface). 5 degrees) is formed.

  The upper blade 2 is attached to a lower portion of a blade holder 4 suspended by three links 5 a, 5 b, 6 on a side wall surface 3 A on the front side of the frame 3. When the upper blade 2 is attached to the suspended blade holder 4, an elevator 8 provided below the blade holder 4 is used. The elevators 8 are respectively provided on the left and right sides of the side wall surface 3A on the front side of the frame 3. Each elevator 8 includes a blade receiver 81 on which the upper blade 2 is placed, and a cylinder portion 82 that raises and lowers the blade receiver 81. It has. Then, referring to FIG. 2, when the upper blade 2 is attached to the blade holder 4, the upper blade 2 is placed on the blade receiver 81 of each elevator 8 and raised to the attachment position to the blade holder 4. And the upper blade 2 is screwed to the blade holder 4 with a plurality of bolts 21. Thereby, even the long upper blade 2 can be attached to the blade holder 4 simply, quickly and safely. In addition, the upper blade 2 attached to the blade holder 4 can adjust the protrusion amount of the blade edge with an adjuster screw 22 as appropriate. When the upper blade 2 is attached, the blade receiver 81 of each elevator 8 is lowered and held at a lower position that does not interfere with the upper blade 2 that swings when the workpiece is cut, thereby cutting the workpiece W. There will be no hindrance. In addition, when removing the upper blade 2 from the blade holder 4, an operation reverse to the above is performed.

  The lower blade 1 is fixed in a horizontal posture on the lower surface in a substantially rectangular window hole 31 penetratingly formed at a substantially central position of the frame 3. The lower blade 1 is attached in a state where the blade edge protrudes from the side wall surface 3A on the front side of the frame 3 and there is no clearance with the upper blade 2. Specifically, referring also to FIG. 3 and FIG. 4, a cutter mounting groove 32 is formed on the lower surface in the window hole 31 by cutting out the front side wall surface 3 </ b> A side of the frame 3. It is fixed to the groove 32. A plurality of horizontal holes 34 are provided in the side wall surface 3 </ b> A on the front surface of the frame 3 along the lower side of the window hole 31, and the blade mounting surface 33, which is the lower surface of the blade mounting groove 32, penetrates each horizontal hole 34. A plurality of long holes 35 are provided. Each long hole 35 extends long toward the front side of the frame 3, and is continuously open from the blade mounting surface 33 to the lateral hole 34 to the side wall surface 3A (see FIG. 4). In the state where the lower blade 1 is mounted on the blade mounting surface 33 of the blade mounting groove 32, the tightening bolts 11 pierced from the horizontal holes 34 to the long holes 35 are inserted into the screw holes 12 on the lower surface of the lower blade 1. It is fixed by screwing and tightening.

  When attaching the lower blade 1 or adjusting the clearance, referring to FIG. 2, a positioning handle H is attached to each of the horizontal screw holes 13 provided at three positions on the left, right, and center of the lower blade 1. After the blade 1 is pushed into the blade attachment groove 32 and the upper blade 2 is lowered to the workpiece cutting position, the lower blade 1 is pulled toward the front by each positioning handle H, and the cutting edge of the lower blade 1 extends over the entire length. It moves to the position which contacted the upper blade 2, and each clamping bolt 11 is tightened sequentially in this position, and the lower blade 1 is fixed. In addition, when the attachment of the lower blade 1 is completed, each positioning handle H is removed. As a result, the lower blade 1 can be reliably and easily fixed to the blade mounting groove 32 in a state where the upper blade 2 and the lower blade 1 have no clearance over the entire length when the workpiece is cut. Therefore, since the bending due to the pressing of the upper blade 2 and the lower blade 1 against the workpiece W is suppressed at the time of cutting the workpiece and the sharpness is improved, the cutting of the cut end is suppressed even for a long thin workpiece W. The surface can be cleaned.

  Moreover, since each long hole 35 is open | released by the side wall surface 3A of the flame | frame 3, the fastening bolt 11 attached to the lower blade 1 can be visually observed through the open part of the long hole 35, and the attachment state of the lower blade 1 is easy to see. Become. Moreover, since the tightening bolt 11 can be disposed in the long hole 35 through the open portion of the long hole 35, the lower blade 1 with the tightening bolt 11 attached in advance can be easily set in the blade mounting groove 32. Can do. Further, when the long hole 35 is not opened, it is necessary to insert the tightening bolt 11 into the horizontal hole 34 and then screw it into the lower blade 1 placed on the blade placing surface 33 through the long hole 35. However, such troublesome work is not required because the long hole 35 is opened. Therefore, the attachment of the lower blade 1 to the blade attachment groove 32 and the clearance adjustment in a state where there is no clearance between the upper blade 2 and the lower blade 1 can be performed more easily and reliably.

Moreover, this cutting machine A is provided with the following structures.
Referring to FIG. 1, a blade holder 4 to which an upper blade 2 is attached is pivotally supported by two right and left links 5 a and 5 b and a middle drive link 6. The two left and right links 5a and 5b are attached to be inclined in the same direction. Each of these two links 5a and 5b is divided into two so that the length can be adjusted and connected by an adjusting screw 51. The adjustment screw 51 is provided with left and right screw grooves with opposite screw directions, and the screw grooves are screwed into the divided portions of the links 5a and 5b. Then, by adjusting the length of each of the two links 5a and 5b by rotating the adjusting screw 51, the blade holder 4 is suspended in an inclined posture, and the upper blade 2 has a predetermined shear angle α. It is The shear angle α of the upper blade 2 is set to be 1 to 2 degrees when the blade edge of the upper blade 2 is first positioned at the blade edge of the lower blade 1. Thereby, the load applied to the cutting start end portion of the workpiece W can be suppressed, and the cutting of the workpiece W can be started smoothly.

  Further, the middle drive link 6 is attached to be tilted in the opposite direction to the two left and right links 5a and 5b, and includes a crank portion 61 at an attachment portion of the frame 3. Therefore, when the crank portion 61 is driven by a motor or the like, the drive link 6 advances in the axial direction, and the upper blade 2 moves down together with the blade holder 4 while swinging. At this time, the upper blade 2 having the shear angle α swings so as to move in the end direction (left side in FIG. 1) which is the lower side of the inclination, and pulls the workpiece W. Then, when the cutting edge of the upper blade 2 is first positioned at the cutting edge of the lower blade 1, the two links 5a and 5b are entered so that the entry angle k of the upper blade 2 with respect to the lower blade 1 is approximately 30 to 45 degrees. Is arranged. Thereby, the load applied to the cutting start end portion of the workpiece W can be suppressed, and the cutting of the workpiece W can be started smoothly.

  In addition, on the side wall surface 3A on the front side of the frame 3, receiving surfaces 7a and 7b that are slidably contacted with both end portions on one side of the blade holder 4 are provided on the left and right sides, and an intermediate portion of the blade holder 4 is provided. An intermediate receiving portion 70 that is slidably brought into contact with both surfaces is provided. The intermediate receiving portion 70 includes a receiving portion 71 on the rear side provided on the convex portion 36 suspended from the upper portion of the window hole 31 of the frame 3 (see FIG. 3), and a front side provided on the leg portion 37 attached to the side wall surface 3A. The blade holder 4 is sandwiched between the front and rear receiving portions 71, 72. As a result, the blade holder 4 is swung in contact with the receiving surfaces 7a and 7b and the intermediate receiving portion 70, so that the upper blade 2 attached to the blade holder 4 is crossed with the lower blade 1 without swinging back and forth. . Moreover, even if the upper blade 2 is long, the upper blade 2 is held so as not to bend when it comes into contact with the workpiece W. Therefore, even a long workpiece W can be cut straight, and the cut dimensions of the workpiece W can be made uniform from one end to the other end.

  Further, the cutting machine A is provided with a work pressing mechanism 9 that presses the work W fed onto the lower blade 1 from above at the upper part in the window hole 31 of the frame 3. The work pressing mechanism 9 includes a pressing portion 91 and a cylinder portion 92 that moves the pressing portion 91 up and down. Then, the work W fed onto the lower blade 1 is pressed from above by the pressing portion 91 lowered by the cylinder portion 92 and held in a movement-blocking manner. As a result, the workpiece W can be cut without being displaced while the workpiece W is being cut.

  As an operation of cutting the thin workpiece W by the cutting machine A having the above configuration, the workpiece W is fed onto the lower blade 1 at a predetermined pitch by a conveying means such as a feed roll, and the workpiece pressing mechanism 9 prevents the workpiece W from moving. Then, the crank portion 61 of the drive link 6 is driven to lower the upper blade 2 while swinging. Then, the blade edge of the upper blade 2 crosses the lower blade 1 obliquely, and the cutting angle of the upper blade 2 gradually decreases, so that the workpiece W is sequentially cut from the left and right ends to the other end. As described above, when the workpiece W is cut, the workpiece W is cut by pulling the upper blade 2, so that the load when cutting the workpiece W is greatly reduced. Therefore, breakage of the cut end of the work W can be suppressed and the cut surface can be finished cleanly.

  And according to this cutting machine A, even if it is the long upper blade 2 and lower blade 1 with a long blade span, it can set reliably in the state without the clearance between the upper blade 2 and the lower blade 1 over the whole length. The pressure on the workpiece W is suppressed during cutting, and the sharpness is improved. Therefore, even a long thin workpiece W can be cut and the cut surface can be suppressed, and the cut surface can be finished cleanly. For example, a plastic sheet having a thickness of about 1 mm to 2 mm and a long workpiece W having a cutting length of about 1 m to 2 m can be cut so that the cut surface is finished cleanly without burrs. Therefore, this cutting machine A cuts various thin objects such as various plastic films such as polarizing films for liquid crystals and films for semiconductors, metal foils such as aluminum foil, etc. into a clean cut surface even if it is long. It is preferably used.

  In addition, this invention is not limited only to the said embodiment, For example, each long hole 35 may be penetrated from the blade mounting surface 33 to the horizontal hole 34, without opening to the side wall surface 3A of the flame | frame 3. . The drive link 6 may be driven by a cylinder mechanism instead of the crank mechanism. Further, in the case of a small cutting machine A, the upper blade 22 may be directly supported by the links 5a and 5b without using the blade holder 4.

DESCRIPTION OF SYMBOLS 1 Lower blade 2 Upper blade 3 Frame 3A Side wall surface 4 Blade holder 5a, 5b Link 6 Drive link 7a, 7b Receiving surface 8 Elevator 9 Work holding mechanism 11 Tightening bolt 31 Window hole 32 Tool mounting groove 33 Tool mounting surface 34 Side hole 35 Long hole 51 Adjustment screw 70 Intermediate receiving portion 71 Rear receiving portion 72 Front receiving portion A Cutting machine W Work α Shear angle

Claims (6)

A cutting machine that cuts a thin workpiece by crossing while moving a moving blade relative to a fixed blade,
A horizontal hole is provided in the side wall surface of the frame provided with the blade mounting groove for mounting the fixed blade, and a long hole penetrating the horizontal hole is formed in the blade mounting surface of the blade mounting groove, and the tightening bolt is changed from the horizontal hole to the long hole. Screw the fixed blade that is passed through and fixed on the blade mounting surface, and tighten the tightening bolt at the position where the fixed blade contacts the moving blade moved to the workpiece cutting position. A cutting machine having a configuration in which the fixed blade is fixed to the blade mounting groove in a state where there is no clearance with the fixed blade. The cutting machine according to claim 1, wherein
The said long hole extends long toward the side wall surface side of the flame | frame provided with the horizontal hole, The cutting machine currently open | released continuously from the blade mounting surface to the horizontal hole with respect to this side wall surface. The cutting machine according to claim 1 or 2,
It has two links for supporting the movable blade with a shear angle so that it can swing.
Each of the two links is a cutting machine that is divided into two so that the length can be adjusted and is connected by adjusting screws having screw grooves provided in opposite directions in the screw direction. The cutting machine according to any one of claims 1 to 3,
A blade holder to which the moving blade is attached;
Below the blade holder is provided an elevator that can freely move the blade receiver of the moving blade,
The above-described lifting machine is a cutting machine configured such that the movable blade is placed on the blade holder and can be raised to the attachment position to the blade holder, and can be lowered to a lower position that does not interfere with the movable blade when the workpiece is cut. In the cutting machine of any one of Claims 1-4,
A blade holder to which the moving blade is attached;
The blade holder is suspended from the frame so that it can swing,
The frame is provided with receiving surfaces that are slidably contacted with both end portions on one side of the swinging blade holder, and an intermediate receiving portion that is slidably contacted with both surfaces of the intermediate portion of the blade holder. A cutting machine is provided. In the cutting machine of any one of Claims 1-5,
A blade holder to which the moving blade is attached;
The cutter holder is supported by two links so as to be swingable, and a cutting link in which a drive link for swinging the cutter holder is connected between the two links.

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