JP4977977B2 - Cutting machine - Google Patents

Description

  The present invention relates to a cutting machine that cuts a work such as a notebook or book in which a predetermined number of sheets are stacked into two parts.

Conventionally, this type of splitting machine is provided with a cutter that is slidable in the horizontal direction and a push-up device that pushes up the work table, while pressing the work on the work table against the entire cutting edge of the cutter with the push-up device. The blade was slid horizontally to cut the workpiece.
Japanese Utility Model Publication No. 58-121695

  However, in the conventional splitting machine, since the blade is applied to the workpiece at once, a large load is applied to the blade, and depending on the workpiece, the blade may be torn, and the cutting edge may be difficult to cut straight. Further, since a large load is applied to the blade at once, a large amount of power is required to slide the blade.

  This invention is made | formed in view of the said situation, and makes it a subject to implement | achieve the cutting machine which can cut a workpiece | work smoothly, without applying a big load to a cutter.

(1) The cutting machine according to the present invention is:
A device that cuts a work such as a notebook or book in which a certain number of sheets are stacked into two parts,
A double-edged blade installed above the work table in a state where the cutting edge is directed downward and held in an inclined posture;
An elevating mechanism that pushes the work table on which the work is placed toward the blade,
A blade control mechanism that operates to cut the workpiece while swinging the blade in the horizontal direction and displacing the blade from the inclined posture to the horizontal posture;
The blade is held by a blade holder,
Said edge control mechanism, hung and axially supported by the front and rear by two arms of different lengths of said edge holder cutlery an inclined posture, the link arm and pivotally supports the link arm to the blade holder The lifting / lowering movable part of the lifting / lowering mechanism is connected to the L-shaped arm that is pivotally supported so as to swing the blade in conjunction with the lifting / lowering movable part of the lifting / lowering mechanism .

Since the blade holder that holds the blade is suspended by the two arms having different lengths in the front-rear direction, the blade can be easily in a predetermined inclined posture. When the elevating movable part of the elevating mechanism rises, the L-shaped arm swings and pulls the cutter holder backward by the link arm, and the swinging operation is performed while the cutter is displaced from the inclined posture to the horizontal posture. Then, when the swing operation is performed, the blade gradually decreases in inclination angle, and assumes a horizontal posture parallel to the work table surface at the end of the swing operation.
As a result, when the work table is raised by the elevating mechanism, an inclined blade is inserted into the work from the rear side of the uppermost part, and as the work table is raised, the blade swings and displaces from the inclined posture to the horizontal posture. While cutting the work. Then, when cutting to the lowermost part of the work, the cutting tool is in a horizontal posture, the cutting edge is brought into contact with the work table or the like, and the work is divided into two parts.
Accordingly, the entire cutting edge of the blade is not applied to the workpiece at once, but the blade is gradually inserted from the inclined posture to divide the workpiece into two, so that a large load is not applied to the blade.

(2) Also, guide claws are installed on the left and right sides of the work table, and the guide claws are straight portions at least up to the vicinity of the height of the cutting edge of the blade, and the upper portion is equal to the cutting edge angle of the blade, You may comprise so that it may become the inclination part which has the clearance angle larger than it and inclines outward.
As a result, the workpiece cut with the double-edged blade is smoothly tilted to the left and right of the blade along the angle of the blade, and smoothly escapes, and the blade is smoothly inserted into the workpiece to cut the workpiece smoothly. Done.

(3) The blade may be configured to be fixed to the blade holder by a clamp so that the blade can be held and adjusted in a horizontal posture at the end of the swing operation.
At the end of the swing operation, it is necessary to adjust the posture so that the blade is in a horizontal posture parallel to the work table surface. However, the blade is clamped and held in the blade holder so that the blade can be swung backward in a test operation, and the work table is lifted by the lifting mechanism so that the entire blade edge comes into contact with the work table. Thus, the cutter clamp can be fixed. Therefore, there is an advantage that the posture adjustment of the blade can be performed very easily.

  As described above, according to the present invention, since the entire cutting edge of the blade is not applied to the workpiece at once, the blade is gradually inserted from the inclined posture and the workpiece is divided into two parts. Will not take. Therefore, the workpiece can be cut without being dragged, and the workpiece can be divided into two with the blade edge kept straight, and the cut portion can be finished neatly. Further, the power for moving the blade is small, and labor saving can be achieved.

Embodiments of the present invention will be described below with reference to the drawings.
As shown in FIG. 1, the sheet cutter A is a device that cuts a work W such as a notebook or a book in which a predetermined number of sheets are stacked into two parts, and has an inclined posture with a cutting edge facing downward. A double-edged blade 1 installed above the work table T, a lifting mechanism 2 that pushes up the work table T on which the work W is placed toward the blade 1, and a horizontal movement from the inclined posture by swinging the blade 1 in the horizontal direction. A blade control mechanism that operates to cut the workpiece W while being displaced to the posture.

  Further, a feeding mechanism 3 that feeds the workpiece W from the side toward the work table T (see FIG. 2) and a workpiece W that has been cut and disposed in front of the workpiece table T are sent to the splitting machine A. A delivery mechanism 4 is provided.

  The blade 1 is clamped and held by the blade holder 10 and is installed on the base F so as to be swingable. The blade holder 10 is pivotally supported by two arms 11 and 12 having different lengths in the front-rear direction and is suspended from the base F. The length of the front arm 11 among the front and rear arms 11 and 12 is formed short, and thus the blade 1 is inclined with the front side facing upward. When the blade 1 is swung backward, the inclination angle β gradually decreases, and when the swing operation is finished, the blade 1 is in a horizontal posture parallel to the work table surface.

  It is necessary to adjust the posture so that the blade 1 is in a horizontal posture parallel to the work table surface at the end of the swing operation. However, since the blade 1 is clamped and held by the blade holder 10 (see FIG. 3), the blade 1 is swung backward in the test operation, and the work table T is lifted by the lifting mechanism 2 so that the entire blade edge is the workpiece. There is an advantage that the posture adjustment of the blade 1 can be very easily performed by adjusting the posture of the blade 1 so as to be in contact with the table T and fixing the clamp of the blade 1.

  The elevating mechanism 2 is constituted by a hydraulic cylinder, for example, and is connected to the lower surface of the work table T. When cutting the workpiece W by the lifting mechanism 2, the workpiece table T is raised so that the workpiece W on the workpiece table T is pressed against the blade 1, and after the workpiece cutting, the workpiece table T is lowered to return to the original lower position. Let

  Further, the blade 1 and the lifting mechanism 2 are connected by a link mechanism 5 and are configured so as to be interlocked with each other. Therefore, the link mechanism 5 allows the workpiece W to be raised by the elevating mechanism 2 and the blade 1 to swing with good timing.

The link mechanism 5 includes an L-shaped arm 50 and a link arm 51 pivotally supported by the blade holder 10, and the L-shaped arm 50 is pivotally supported by a base F so as to be rotatable at a central bent portion. . One end of the L-shaped arm 50 is pivotally supported by a link arm 51 pivotally supported at the rear portion of the blade holder 10 and the other end is pivoted by a vertically movable portion of the lifting mechanism 2 (hydraulic cylinder). It is pivotally supported. Thereby, when the raising / lowering movable part of the raising / lowering mechanism 2 moves up, the L-shaped arm 50 swings and pulls the blade holder 10 backward, and the blade 1 swings while being displaced from the inclined posture to the horizontal posture.
The link mechanism 5 and the two arms 11 and 12 that suspend the blade holder 10 constitute the blade control mechanism.

  In addition, as shown in FIG. 2, in the splitting machine A, pin-shaped guide claws 6 (6a, 6b) are provided at the left and right positions of the work table T so that the work W on the work table T is not broken apart. And an extrusion plate 7 and a stopper plate 8 are installed at a rear position of the work table T.

  As shown in FIG. 3, the guide claws 6a and 6b are straight portions 61 at least up to the vicinity of the height of the cutting edge of the cutter 1, and the upper portion thereof is equal to or more than the cutting edge angle α of the cutting tool 1. The inclined portion 62 is inclined outward with a large clearance angle θ. Therefore, the workpiece W cut by the double-edged blade 1 is smoothly inclined to the left and right of the blade 1 along the angle α of the blade edge and smoothly escapes, and the blade 1 is smoothly inserted into the workpiece W. W is cut smoothly (see FIG. 3B).

  Further, as shown in FIG. 4, the left and right side portions of the work table T are formed in a skewer shape, and a pin-shaped guide claw 6 is inserted and disposed in each of the concave portions U. The left and right guide claws 6a and 6b are interlocked by a ball screw mechanism N connected to the operation handle h (see FIG. 2). Therefore, by rotating the operation handle h, the distance between the left and right guide claws 6a and 6b can be freely adjusted according to the workpiece width.

  The stopper plate 8 receives the workpiece W so as to prevent the workpiece W from collapsing backward by being dragged by the swinging motion of the blade 1 to the rear side, so that the workpiece W is cut smoothly (FIG. 1). FIG. 2). Therefore, as shown in FIG. 5, the stopper plate 8 is provided with a V-shaped notch 80 along the cross-sectional shape of the blade 1, and the blade 1 passes through the notch 80 and moves backward. The swing operation is performed without any trouble.

  The push-out plate 7 is configured to be advanced and retracted so as to be advanced forward by a push mechanism 70, and pushes the cut workpiece W forward and sends it to the feed mechanism 4 (see FIG. 1).

  On the work table T, as shown in FIG. 6, a blade receiving member 9 with which the cutting edge of the blade 1 abuts is attached. The blade receiving member 9 is made of plastic and has a square bar shape with a substantially square cross section. And the blade receiving member 9 is installed in the work table T so that the blade edge | tip of the cutter 1 may contact | abut to the side part rather than the center part (refer also the dashed-dotted line in FIG. 4). Accordingly, the blade receiving member 9 reverses the left and right positions when the cutting edge is abutted many times by cutting and the surface blade receiving surface 90 is roughened, and is rotated when both the left and right parts are roughened to rotate the other surface to the blade receiving member. By setting it as the surface 90, there exists an advantage which can be used as a blade-tip receptacle over a total of eight places in a right-and-left site | part about 4 surfaces.

  According to the cutting machine A according to the embodiment having the above-described configuration, when the work table T is raised by the elevating mechanism 2, the cutting tool 1 in an inclined posture is inserted into the work W from the uppermost rear side. As the table T rises, the blade 1 swings backward to cut the workpiece W while being displaced from the inclined posture to the horizontal posture. When the work is cut to the lowest part, the blade 1 is in a horizontal posture, the blade edge of the blade 1 is brought into contact with the blade receiving member 9 of the work table T, and the work W is cut into two parts.

  In this way, since the entire cutting edge of the blade 1 is not applied to the workpiece W at once, the blade W is gradually inserted from an inclined posture and the workpiece W is divided into two parts, so that a large load is applied to the blade 1. There is no. Therefore, the workpiece W is not dragged and broken, and the workpiece W can be cut into two with the blade edge kept straight, and the cut portion can be finished finely. And since the load to the blade 1 is reduced, for example, a thin blade 1 having a thickness of 4 mm or less (for example, 2 to 3 mm) can be used, thereby further straightening the workpiece cutting portion. A beautiful finish is possible. Moreover, the power of the raising / lowering mechanism 2 that moves the blade 1 can be reduced, and labor can be saved.

  Note that the present invention is not limited only to the above-described embodiments, and can be modified as appropriate. For example, the swing operation of the blade 1 is mainly performed by the link mechanism 5 interlocked with the lifting mechanism 2, but it is operated by other blade control mechanisms such as an independent link mechanism, a hydraulic cylinder and a feed screw mechanism. Also good.

It is a side view which shows the whole structure of the cutting machine by embodiment. It is a front view which shows the whole structure of the cutting machine by embodiment. It is a schematic diagram which shows a state when cut | disconnecting a workpiece | work with the cutter of a cutting machine. It is the top view which looked at the work table from the top. It is a top view which shows the stopper board installed in the rear part of the work table. It is sectional drawing which shows the blade receiving member installed in the work table.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cutlery 2 Lifting mechanism 3 Feeding mechanism 4 Feeding mechanism 5 Linking mechanism 6 Link mechanism 6 Guide claw 7 Extrusion plate 8 Stopper plate 10 Cutlery holder 11 Front arm 12 Short arm 13 Link arm 50 L-type arm A Splitter F Base T Worktable W Workpiece

Claims (3)

A device that cuts a work such as a notebook or book in which a certain number of sheets are stacked into two parts,
A double-edged blade installed above the work table in a state where the cutting edge is directed downward and held in an inclined posture;
An elevating mechanism that pushes the work table on which the work is placed toward the blade,
A blade control mechanism that operates to cut the workpiece while swinging the blade in the horizontal direction and displacing the blade from the inclined posture to the horizontal posture;
The blade is held by a blade holder,
Said edge control mechanism, hung and axially supported by the front and rear by two arms of different lengths of said edge holder cutlery an inclined posture, the link arm and pivotally supports the link arm to the blade holder A splitting machine configured to connect a lifting and lowering movable part of the lifting mechanism and an L-shaped arm that is pivotally supported to swing the cutter in conjunction with the lifting and lowering moving part of the lifting mechanism . In the cutting machine according to claim 1,
Guide claws are installed on the left and right sides of the work table. These guide claws are straight parts at least up to the height of the cutting edge of the tool, and the upper part is equal to or larger than the cutting edge angle of the tool. A cutting machine that has a slanted part that is inclined outwards. In the cutting machine according to claim 1 or 2,
The cutter is fixed to the blade holder by a clamp so that the blade can be held and adjusted in a horizontal posture at the end of the swing motion.

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