JP2508309Y2 - Paper driven automatic drafting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a paper-driven automatic drafting machine.

[Conventional technology]

Conventionally, this type of sheet-driven automatic drafting machine places a sheet 6 on a platen 4 fixed to the machine body 2 as shown in FIG.
The paper 6 is held between the driving roller 8 and the pressing roller 10,
While feeding the paper 6 on the platen 4 in the front-back direction of the machine body 2, the pen head 12 is fed along the Y rail 14 in a direction perpendicular to the feeding direction of the paper 6 to form a predetermined pattern on the paper 6 on the drawing roller 9. Is drawing.

[Problems to be solved by the invention]

When the paper 6 is fed back and forth on the platen 4, the paper 6
Moves at high speed (horizontal direction in FIG. 3) while hanging down from the front and back of the platen 4. Therefore, the hanging front and rear parts of the paper 6 float and move from the guide surface on the front and rear part side of the platen 4 as shown in FIG. 3, and are necessary work areas for drawing on the automatic drafting machine. 16 is
There was a defect that increased due to the floating phenomenon accompanying the movement of the paper 6.

The present invention aims to eliminate the above defects.

[Means for solving problems]

In order to achieve the above object, the present invention holds a sheet 40 on a platen 28 between a driving roller 42 and a pressing roller 44, and rotates the driving roller 42 to feed the sheet 40 on the platen 28 in the front-back direction. On the other hand, in a device in which the pen 36 is fed in a direction perpendicular to the feeding direction of the paper 40 to perform a predetermined drawing on the paper 40, the paper 40 is passed from the rear part of the platen 28 to the bottom of the platen 28. A guide member 44 for guiding the front part of the platen 28 is disposed so as to face the rear part and the bottom part of the platen 28.

[Action]

When the paper 40 is fed in the front-back direction of the platen 28 on the platen 28, the portion of the paper 40 that is fed to the rear of the platen 28 is guided by the guide surface of the guide member 44 under the platen 28 and to the front of the platen 28. Get burned.

〔Example〕

Hereinafter, the configuration of the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings.

In FIG. 1, 20 is a machine body of a paper drive type automatic drafting machine, and a platen 28 is attached by a pair of brackets 24 and 26.
It is located above the machine body 20 and is fixed to the machine body 20, and the machine body 20 is supported by a pair of pedestals 30 and 32.

A Y rail 34 is installed between the brackets 24 and 26, and a pen head 38 for holding the pen 36 in the Y rail 34 so that the pen 36 can move up and down.
Is movably mounted.

The paper 40 on the platen 28 is composed of a drive roller 42 arranged on the platen 28 side in association with a driving device and a pressing roller 44 arranged on the machine body 20 side in the horizontal direction (X) in FIG. Direction). A drawing roller 43 is located immediately below the pen 36, and is arranged so as to be linked to the rotary drive system. A guide member 44 is fixedly mounted on the machine body 20 so as to face the rear portion and the bottom surface of the platen 28. It has a guide surface that leads to the front portion of the platen 28 through the bottom portion. Reference numeral 46 denotes a platen auxiliary plate that is fixedly provided on the front portion of the platen 28, and is for guiding the paper 40 from the front position of the platen 28 to the upper surface of the platen 28.

 Next, the operation of this embodiment will be described.

The paper 40 is placed on the platen 28, and the paper 40 on the platen 28 is held between the drive roller 42 and the pressing roller 44. When the drawing operation is started, the paper 40 is fed on the platen 28 in the front-back direction of the machine body 20, while the pen head 38 moves along the Y rail 34 in a direction perpendicular to the feeding direction of the paper 40 on the platen 28. The pen 36 held by the pen head 38
Thus, a predetermined pattern is printed on the paper 40 on the drawing roller 43. The sheet 40 is guided by the guide surface of the guide member 44.
The portion sent to the rear of the platen 28 is sent to the front of the platen 28.

〔effect〕

As described above, according to the present invention, since the paper fed to the rear of the platen is guided to the front of the platen by the guide member, the paper does not hang behind the platen and the hanging portion does not float up. There is an effect that the work area of can be reduced.

[Brief description of drawings]

FIG. 1 is an external view, FIG. 2 is an explanatory sectional view, and FIG. 3 is an explanatory sectional view of a conventional technique. 20: Airframe, 24, 26, 28: Platen, 34: Y rail,
38 …… Pen head, 36 …… Pen, 40 …… Paper, 42 …… Drive roller, 44 …… Pressing roller, 44 …… Guiding member

Claims (1)

(57) [Scope of utility model registration request] 1. A sheet of paper 40 on a platen 28 is held by a drive roller 42 and a pressing roller 44, and the sheet of paper 40 is fed in the front-rear direction on the platen 28 by the rotation of the drive roller 42, while a pen 36 is used to move the sheet. In an apparatus that feeds the sheet 40 in a direction perpendicular to the feeding direction to perform a predetermined drawing on the sheet 40, the sheet 40 is fed from the rear part of the platen 28 to
A sheet drive type automatic drafting machine, characterized in that guide members (44) for guiding to the front part of the platen (28) under the plate (28) are arranged so as to face the rear part and the bottom part of the platen (28).