JPH0615998A - Sheet sucking control method in sheet moving type plotter - Google Patents

Abstract

PURPOSE:To provide a sheet sucking control method capable of operating a pen carriage after a work sheet is set to a state necessarily movable along the surface of a platen at the time of the start of the operation of a plotter. CONSTITUTION:In a sheet moving type plotter constituted so that small suction holes 3 for sucking a sheet are arranged to the adjacent part of the line drawing position to the work sheet of a platen 2 and the work sheet is drawn on the surface of the platen by a suction fan 10 to be moved, the suction fan 10 is started upon the reception of an operation command from the outside to start the sucking operation to the work sheet and, after the elapse of a predetermined time, the operation of a pen 7 is started to control the suction of the sheet. Therefore, at the time of the movement of a pen immediately before the line drawing operation of the plotter is started, the interference of the pen with the work sheet is perfectly eliminated and line drawing operation can be always accurately performed and cutting/drawing of high accuracy can be performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to control of a suction state of a sheet on a platen surface in a sheet moving type plotter, and the sheet moving type plotter is controlled so that the sheet is constantly held on the platen at the start of operation. Sheet suction control method in the above.

[0002]

2. Description of the Related Art Conventionally, in a cutting plotter which is connected to a computer and cuts a sheet into a desired pattern according to output data thereof, a paper having a release layer on the back surface of a soft plastic sheet is handled as a sheet to be handled. A composite sheet in which mounts such as the above are laminated is often used. The composite sheet of the soft plastic sheet and the mount is usually rolled out and fed to the cutting portion of the cutting plotter. Therefore, the composite sheet supplied to the receiving surface (platen surface) at the cutting position by the cutting pen is easily lifted, and therefore, in order to perform accurate cutting smoothly, the platen of the platen is attracted by the suction force adjacent to the cutting position. The composite sheet (hereinafter referred to as a work sheet) is sucked and supplied on the upper surface.

In order to perform such a work sheet suction operation, for example, as shown in FIG. 3, a large number of suction holes are formed in a portion of the upper surface of the bed 1 of the cutting plotter A adjacent to the cutting position (on the platen 2). 3 is provided. A suction fan (not shown) provided inside the bed 1 through the suction small holes 3 sucks the back surface of the worksheet supplied to the cutting position along the upper surface of the bed 1 through a duct (not shown). This worksheet is composed of a pair of grid rollers 4 and pinch rollers.
Both ends are sandwiched by 4'and moved at a required speed, and a desired pattern is cut by a cutting tool 7 (cutting pen) attached to a carriage 6 which traverses along a guide rail 5 in the X-axis direction. ing.

The suction fan in the suction means for the work sheet has a function of automatically stopping for noise reduction and power consumption reduction after a standby state for a certain period of time. When the work sheet is moved, the suction fan is activated at the same time as the work sheet is moved.

[0005]

Since the conventional cutting plotter A is controlled as described above, for example, the suction fan in a state where the work sheet can be moved by the grit roller 4 and the pinch roller 4 '. When the sheet is stopped, it is lifted from the upper surface of the platen 2 due to "curl habit" of the worksheet. Therefore, at the time of starting the work, the cutting operation is started in a state where the work sheet does not surely follow the upper surface of the platen 2, which causes a deviation in the feeding of the work sheet. When moving for the next operation position or origin detection operation, it is to contact the raised portion of the worksheet and scratch the surface of the worksheet. Moreover, when the cutting tool 7 comes into contact with the worksheet surface, the direction of the cutting edge recognized by the drive control unit of the cutting plotter A is rotationally displaced, the starting and ending points of cutting do not match, and the cutting operation is disturbed. There is a problem.

The above-mentioned problems have been described in the case of the cutting plotter. In addition to this, also in the paper move type plotter for drawing, when the drawing sheet having a relatively large basis weight is used, the platen is used in the same manner as the composite sheet. There is a problem with regard to improving the drawing accuracy because it tends to rise above.

The present invention solves such a problem,
An object of the present invention is to provide a sheet suction control method in a sheet moving type plotter that enables the pen carriage to operate after the work sheet is made to move along the platen surface at the start of operation of the plotter. The pen referred to in the present invention includes various drawing pens and cutting pens.

[0008]

In order to achieve the above-mentioned object, the present invention has a small opening for adsorbing a sheet, which is arranged adjacent to a drawing position of a platen on a work sheet, for adsorbing a sheet. In a sheet moving type plotter configured to be moved by attracting the worksheet to the platen surface by the operation, when the operation command from the outside is received, the suction fan is activated to start the suction operation on the worksheet and a predetermined time has elapsed. The sheet suction control method is characterized in that the operation of the pen is started later.

[0009]

According to the sheet suction control method of the present invention having such a configuration, when the drawing operation command is given to the pen by a command from the outside such as a computer when the plotter is powered on or in a standby state, the suction fan is first operated. The work sheet is started and the suction operation of the worksheet is started, and after that, the operation of the pen is started after a lapse of a predetermined time, so that the worksheet can be securely sucked on the platen and moved, and it interferes with the movement of the pen. Accurate stroke operation is performed without doing.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A sheet suction control method for a sheet moving plotter according to the present invention will be described below with reference to the drawings. This embodiment is a specific example of a cutting plotter, and FIG. 1 is a schematic view of a cutting plotter adopting the sheet suction control method of the present invention. FIG. 2 is a flowchart showing the operation mode. In these figures, the parts having the same structures as those of the conventional example are designated by the same reference numerals, and detailed description thereof is omitted.

A suction fan 10 provided in the bed 1 of the plotter is provided at a collecting portion of ducts 11 connected to the suction small holes 3 for suction, and the suction fan 10 is started by a controller 15 attached to the plotter. It is related so that control of stoppage is performed. Then, when the suction fan 10 is operated normally, the output data from the connected computer is not sent, and when the standby command is given and the operation is interrupted, noise is generated by the rotation sound of the suction fan drive. Since the power consumption is wasted and power is wasted, an automatic stop function for stopping the drive of the adsorption fan 10 after a lapse of a certain time is provided.

Therefore, in the present invention, as shown in FIG. 2, in the plotter control device 15, for example, the power is turned on at the operation portion of the plotter to start 1A and then the computer or the like connected in step 1B. When the suction fan 10 is operating in step 1C, if the suction fan 10 is in the stopped state, the suction fan 10 is started in the next step 1D. Set to suction state. In this state, if the worksheet has been sent onto the bed 1 of the cutting plotter A, the worksheet is sucked onto the upper surface of the bed 1 by suction from the suction small holes 3, and then the timer etc. are simultaneously activated in step 1E. Then, the work sheet is suctioned for a predetermined time. After a lapse of a predetermined time, the process moves to step 1F and the cutting pen 7 and the carriage 6 are moved by the data given from the outside to perform the drawing line operation.

Generally, the required suction time required for a work sheet used in a cutting plotter to be adsorbed and to move without interfering with the cutting pen is that the work sheet width is 460 to 610 mm. , The maximum lifting amount is 3.3-
In the range of 6.2 mm, it was 1.9 to 3.2 seconds. Therefore, the suction required time of the worksheet can be set according to the conditions of the worksheet. When the sheet width is narrow, the suction standby time can be shortened (for example, about 2.5 seconds). When the sheet is narrow but is hard (for example, a sheet containing a fluorescent pigment), the adsorption standby time can be lengthened (for example, 3 to 4 seconds) to improve workability.

In this way, the drawing operation is performed on the worksheet, the required work is completed or the drawing operation is interrupted in the middle of the work, and when a preset time has elapsed, the suction fan is automatically stopped in step 1G. The function operates and the adsorption fan 10 is stopped. When the work is completed, the power is cut off and the work is continued. When the work is continued, the standby state is maintained until the next operation command 1B is given while the auto stop function of the suction fan operates. If the cutting operation is interrupted and the suction fan 10 is in the operating state, when an operation command is given in step 1B, it is determined in step 1C whether or not the suction fan can be operated, and immediately step 1F, that is, the drawing line operation is performed. Will be moved to.

Although the cutting plotter has been described above, the same control method is used to prevent the drawing sheet from floating even in a plotter of a sheet moving type in which a relatively thick drawing sheet is used for drawing. Highly accurate drawing can be performed.

[0016]

As described above, according to the sheet suction control method of the present invention, there is no interference between the pen and the worksheet when the pen is moved immediately before the plotting operation of the plotter is started, and therefore the worksheet is scratched. No unnecessary lines were attached, or the cutting edge of the cutting pen did not go wrong, and accurate drawing operations were always possible, making it possible to perform highly accurate cutting and drawing.

[Brief description of drawings]

FIG. 1 is a schematic diagram of a cutting plotter adopting a sheet adsorption control method of the present invention.

FIG. 2 is a flowchart showing an operation mode.

FIG. 3 is an overall perspective view of a specific example of a plotter targeted by the present invention.

[Explanation of symbols]

 1 bed 2 platen 3 small hole for suction 4 grit roller 4'pinch roller 6 carriage 7 cutting tool (cutting pen) 10 suction fan 11 duct 15 controller A cutting plotter

Claims (1)

[Claims] 1. A sheet moving type plotter having a structure in which a small opening for sucking a sheet is arranged adjacent to a drawing position of a platen on a work sheet, and the work sheet is sucked and moved by a suction fan on the platen surface. When the external operation command is received, the suction fan is activated to start the suction operation on the worksheet and after a predetermined time has elapsed, the pen operation is started. Method.