JPH0680596U - Cutting plotter - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] To control the direction of the eccentric cutter pen prior to cutting smoothly without damaging the cutter blade of the eccentric cutter pen. A blade edge direction restricting member 36 having a blade edge direction restricting surface 36a made of a friction member such as a thin rubber disk is rotatably supported in the vicinity of the cutting area and within the moving area of the head 22. There is. Prior to cutting, the blade tip 2a of the cutter pen 2b is attached to the blade tip direction regulating surface 36.
When the head 46 is moved in a predetermined direction by bringing it into contact with a, the cutter blade 2 is rubbed with the blade edge direction restricting surface 36a,
Rotating around the rotation center axis, the cutting edge 2a
Face the moving direction of the cutter pen 2b.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cutting plotter using a cutter pen having a rotatable eccentric cutter blade, and more particularly, by changing the relative position of the cutter pen with respect to the cutting medium in the XY directions along a pattern. The present invention relates to a cutting plotter in which a medium is cut out in a desired shape.

[0002]

[Prior art]

 When cutting a desired figure by XY driving a freely rotatable eccentric cutter along the cutting line segment that composes the figure, the direction of the cutting edge of the eccentric cutter pen is cut before cutting. Must match the direction of. Otherwise, there arises a problem that an accurate cutting shape cannot be obtained. In order to solve this problem, JP-A-1-183397 discloses that, before cutting, the eccentric cutter pen is moved in a predetermined direction by a predetermined amount to control the direction of the cutting edge, and the position of the cutting edge tip at the start of cutting. A cutting plotter with a constant value is proposed.

[0003]

[Problems to be solved by the device]

 In the conventional cutting plotter described above, as shown in FIG. 8A, when the eccentric rotatable cutter blade 2 is in contact with the blade edge direction regulating surface 4 and is oriented in the direction control direction shown by the arrow direction, Even if the cutter blade 2 is driven in the arrow direction for its direction control, a large frictional force is not generated between the blade edge 2a of the cutter blade 2 and the blade edge direction regulating surface 4, and the cutter blade 2 smoothly moves. Driven in the arrow direction.

However, as shown in FIG. 8B, when the cutter blade 2 is oriented in the direction opposite to the direction in which it is driven, when the cutter blade 2 is driven in the arrow direction, the blade edge 2a is There was a problem that the cutter blade 2 was damaged because the direction regulation surface was caught and the direction change around the rotation center axis 6 was not performed smoothly, and the cutter pen fell off the head. The present invention is intended to solve the above problems.

[0005]

[Means for solving problems]

 In order to achieve the above-mentioned object, the present invention moves the cutting medium on the sheet supporting surface relatively two-dimensionally to perform cutting of a predetermined shape, so that the cutting edge can rotate freely and the cutting edge tip can be freely rotated. In a cutting plotter using an eccentric cutter pen whose center is offset from the center, a cutting edge direction restricting member having a cutting edge direction restricting surface that is located outside the cutting area and within the moving area of the cutter pen, The cutter pen is rotatably arranged about an axis perpendicular to an extension plane of the sheet support surface, and the blade edge direction regulating surface is arranged substantially on the same plane as the sheet support surface. The eccentric portion of the blade edge direction regulating surface can be traversed.

[0006]

[Action]

 When the blade tip of the cutter pen is brought into contact with the blade-direction regulating surface and moved in the specified direction, the cutter blade rotates around its rotation axis due to friction with the blade-direction regulating surface, causing the blade tip to move. Face the direction of movement. When the cutter pen moves, the frictional force between the cutting edge and the cutting edge direction regulating surface causes the cutting edge direction regulating member to rotate, and the direction of the cutting edge is smoothly changed. There is no large frictional force that prevents the cutter pen from moving.

[0007]

【Example】

 Hereinafter, the configuration of the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings. FIG. 3 shows a flat bed type plotter, in which an upper plate 12 is fixed to the machine body 10, and a sheet supporting surface 14 is formed on the upper plate 12 on the same plane. Reference numerals 16 and 18 denote X rails fixed to both sides of the machine body 10, to which both ends of the Y rail 20 are movably connected via X cursors. Reference numeral 22 denotes a head that is movably connected to the Y rail 20 via a Y cursor, and has a built-in lift drive device (not shown) including a known moving coil. The Y rail 20 is connected to an X drive unit built in the machine body 10, and the Y rail 20 has a right angle relationship with the X rails 16 and 18 by the X drive unit. , 18 are configured to be driven.

The head 22 is connected to a Y driving device built in the machine body 10 through a known power transmission mechanism, and the Y driving device drives the head 22 along the Y rail 20. Is configured. The head 22 is provided with pen holding arms 24 and 26 that detachably hold the holder 2c of the eccentric cutter pen 2b so as not to shift in the axial direction. The pen holding arms 24 and 26 are provided inside the head 22. It is connected to the lifting drive. A pen stocker 30 holding a plurality of pens 28 is arranged on one side of the machine body 10.

The plotter 8 is configured so that the pens 2 b and 28 can be automatically exchanged between the head 22 and the pen stocker 30. A holder 2c of the eccentric cutter pen 2b is provided with a rotating member 2d so that the holder 2c can freely rotate. The holder 2c is vertically held by the pen holding arms 24 and 26 with respect to the sheet supporting surface 14, and the rotation center axis 6 of the rotating member 2d with respect to the holder 2c is relative to the sheet supporting surface 14. It is set vertically. Reference numeral 2 denotes a cutter blade detachably attached to the rotating member 2d, and 2a denotes its blade tip. As shown in FIG. 1, the cutting edge 2a of the cutter blade 2 is eccentric by a distance D with respect to the rotation center axis 6.

A shaft body 32 is erected perpendicularly to an extension plane of the seat support surface 14 on a base 10 a of a machine body 10 of the plotter 8, and a cylindrical blade edge direction is provided on the shaft body 32 via a ball bearing 34. The restriction member 36 is rotatably supported. A friction member such as a thin rubber disk is attached to the circular upper horizontal surface of the blade-direction regulating member 36, and the friction member forms a blade-direction regulating surface 36a for the cutter blade. The restriction surface 36a is arranged in the hole formed in the upper surface plate 12 so as to be substantially flush with the upper surface plate 12.

In the above configuration, when cutting a cutting medium such as a seat fixed on the seat supporting surface 14 by suction or the like along a predetermined figure, the eccentricity is caused by the movement of the head 22 prior to cutting. The cutter pen 2b is positioned at the eccentric portion of the blade edge direction restricting surface 36a, and at that position, the eccentric cutter pen 2b is lowered to bring the blade edge 2 into contact with the eccentric portion of the blade edge direction restricting surface 36a. After that, the head 22 is moved in the arrow direction A as shown in FIG. 2 in the same direction as the first cutting pattern. As a result, the direction of the cutting edge 2a faces the same direction as the figure to be cut first.

When the eccentric cutter pen 2b is moved in a predetermined direction on the cutting edge direction restricting surface 36a, the direction of the cutting edge 2 is adjusted so that the cutter pen 2b does not face the rotation center 38 of the cutting edge direction restricting surface 36a. As shown in FIG. 2 with respect to the moving direction, the restriction surface 36a is rotated in the arrow direction B by the moving force from the cutting edge 2a to release the pressure applied to the cutting edge 2a even if the restriction surface 36a is in the opposite direction. Is not overloaded.

The present invention is not particularly limited to the flat bed type plotter shown in FIG. 3, but as shown in FIG. 4, a cutting medium such as a sheet on the platen 40 is added to the drive roller 42. By the forward / reverse rotation of the drive roller 42 which is connected to the X drive device with the pressure roller 44, the cutting medium is fed in the front-rear direction of the platen 40, and the head 46 is moved along the Y rail 48 to be eccentric. The cutter pen 2b is moved along a drawing roller 50 connecting to the X drive device, and the cutting medium is cut into a predetermined shape by the eccentric cutter pen 2b, or a predetermined figure is drawn on the drawing medium by the pen. A so-called paper moving type plotter 52 to be drawn is rotatably provided with a blade edge direction regulating member having a blade edge direction regulating surface 36a. May be.

In FIG. 4, the blade edge direction regulating member having the blade edge direction regulating surface 36a is rotatably supported by a bottom plate (not shown) of the platen 40 via a ball bearing. The blade tip direction regulating member is the platen 40 so that the eccentric cutter pen 2b held by the head 46 can pass through the eccentric portion of the blade tip direction regulating surface 36a of the blade tip direction regulating member that is separated from the center of rotation by a predetermined distance. It is located in the hole. In the plotter 52 of FIG. 4, the surface of the drawing roller 50 facing the eccentric cutter pen 2b constitutes a sheet supporting surface.

In FIG. 4, reference numeral 54 denotes a rotary type pen stocker that is detachably connected to the output shaft of the motor 55, and holds various pens 56 such as hollow pens and ball pens. The plotter 55 is configured such that the head 46 and the pen stocker 54 can automatically exchange pen with each other. In the flatbed type plotter 8 shown in FIG. 3, the blade edge direction regulating member 36 is connected to the output shaft of the motor 58 fixedly mounted on the base 10a of the machine body 10 as shown in FIG. It may be configured to be rotationally driven.

In this case, the blade tip 2a of the eccentric cutter pen 2b that abuts the eccentric portion of the blade tip direction regulating surface 36a of the blade tip direction regulating member 36, the abutting portion of the blade tip 2a on the regulating surface 36a, The circle having the radius of the distance between the blade edge direction regulating surface 36a and the rotation center 38 is oriented in the tangential direction of the abutting portion. In the above embodiment, the eccentric cutter pen 2b may be stationary on the cutting edge direction regulating member 36 to control the direction of the cutting edge 2a. You may make it move to various positions, contacting 36a.

FIG. 6 shows an embodiment in which the rotation direction regulating member 36 of the paper moving plotter 52 is rotationally driven by the drive motor 55 of the pen stocker 54. The rotation direction restricting member 36 is rotatably supported by the bottom plate 40a of the platen 40 via a ball bearing. A pulley 60 is fixed to the rotation direction restricting member 36, and an endless belt 64 or rope is hung between the pulley 60 and a pulley 62 fixed to the output shaft of the motor 55. The rotation direction restricting member 36 is configured to be driven to rotate. The other structure is the same as that of the embodiment shown in FIG. In the paper moving type plotter 52, as shown in FIG. 7, the drawing roller 50 connected to the X driving device and the blade edge direction regulating member 36 are connected by the bevel gears 66 and 68 to drive the rotation of the drawing roller 50. Alternatively, the blade edge direction regulating member 36 may be rotated. Further, the blade edge direction restricting member 36 is connected to the drive roller 42 which is connected to the X drive device shown in FIG. 4, and the blade edge direction restricting member 36 may be rotationally driven by this X drive device during the blade edge direction control. good.

[0018]

【effect】

 As described above, in the present invention, since the blade edge direction regulating member is rotatable, it is possible to solve problems such as damage of the blade edge during the blade edge direction control.

[Brief description of drawings]

FIG. 1 is a side sectional view of a plotter.

FIG. 2 is an explanatory plan view of a blade edge direction regulating surface.

FIG. 3 is a plan view of a plotter.

FIG. 4 is an external view of a paper moving plotter.

FIG. 5 is a sectional view showing another embodiment.

FIG. 6 is a side view showing another embodiment.

FIG. 7 is a side view showing another embodiment.

FIG. 8 is an explanatory diagram of a conventional technique.

[Explanation of symbols]

 2 Cutter blade 2a Blade tip 2b Eccentric cutter pen 4 Blade tip control surface 6 Rotation center axis 8 Flat bed type plotter 10 Airframe 12 Top plate 14 Sheet support surface 16 X rail 18 X rail 20 Y rail 22 Head 24 Pen holding arm 26 Pen holding Arm 28 Pen 30 Pen stocker 32 Shaft body 34 Ball bearing 36 Blade edge direction regulating member 36a Blade edge direction regulating surface 38 Rotation center 40 Platen 42 Drive roller 44 Pressure roller 46 Head 48 Y rail 50 Drawing roller 52 Paper moving plotter 54 Pen stocker 55 Motor 56 Pen 58 Motor 60 Pulley 62 Pulley 64 Belt 66 Bevel gear 68 Bevel gear

Claims (2)

[Scope of utility model registration request] 1. An eccentricity in which the blade tip is freely rotated and the tip of the blade tip is deviated from the center in order to relatively two-dimensionally move on the cutting medium on the sheet supporting surface to perform cutting in a predetermined shape. In a cutting plotter using a cutter pen, the cutting edge direction restricting member having a cutting edge direction restricting surface is positioned outside the cutting area and within the moving area of the cutter pen, and is positioned relative to the extension plane of the sheet supporting surface. Rotatably about a vertical axis, and the cutting edge direction regulating surface is arranged to be substantially on the same plane as the sheet supporting surface, and the cutter pen is an eccentric portion of the cutting edge direction regulating surface. A cutting plotter characterized by being able to traverse. 2. A cutter pen in which the cutting edge is freely rotated and the tip of the cutting edge is offset from the center in order to relatively two-dimensionally move on the cutting medium on the sheet supporting surface to perform cutting in a predetermined shape. In the used cutting plotter, outside the cutting area, and within the moving area of the cutter pen, a cutting edge direction restricting member having a cutting edge direction restricting surface is centered on an axis perpendicular to the extension plane of the sheet supporting surface. A cutting plotter, which is rotatably disposed, the blade edge direction regulating surface is arranged substantially on the same plane as the sheet supporting surface, and the blade edge direction regulating member is linked to a rotary drive source.