JPH0480097A - Plotter - Google Patents

Abstract

PURPOSE:To use paper having arbitrary width and to reduce the load of a drive shaft by controlling the driving of the drive roller and pressure roller on a moving side at a desired position and automatically moving the drive roller corresponding to the paper size signal from an automatic feeder. CONSTITUTION:An arm lift means raising and lowering the first and second pressure roller arms 58, 60 on the mounting sides thereof to bring the same to a pressure contact state and a separated state with respect to the first and second drive rollers 10, 20, a connection means connecting the second drive roller 20 and the second pressure roller arm 60 in order to cooperate them each other and an arm driving mechanism driving the second pressure roller arm 60 along a shaft body 56 in a Y-axis direction with respect to the first pressure roller arm 58 are provided. The arm driving mechanism is controlled in its driving corresponding to the width of the paper fed from an automatic feeder and the pressure roller 64 and second drive roller 20 supported by the second pressure roller arm 60 are moved to the predetermined position on the paper supplied to a paper placing member 2.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a paper moving type, that is, a paper-driven plotter (automatic drawing machine). Both sides of the paper are held between a drive roller and a pressure roller, and the paper is fed in a uniaxial direction on the paper placement member by forward and reverse rotation of the drive roller.

[Problem that the invention seeks to solve]

There are various sizes of paper used for drawing.

In order to be able to sandwich paper of various sizes between the driving roller and the pressure roller, it is necessary to provide a plurality of driving rollers or to use a long roller that covers the entire area in the width direction of the paper loading member. There was a need to prepare a drive roller of the same size. As a result, the drive shaft that drives the moving roller becomes heavier,
The torque required for the rotation is large, requiring the use of a motor with large torque, and the rotation accuracy of the drive roller is reduced.

The present invention aims to eliminate the above-mentioned defects.

[Means to solve problems]

In order to achieve the above objective, the five machines are equipped with an automatic paper feeder that feeds paper of different sizes onto the paper placement member 2, and the paper of the desired size is automatically transferred from the automatic paper feeder to the drive roller. In a plotter that is fed between pressure rollers, a Y-rail 46, a printing head 48 movably supported along the Y-rail 46, and an opening 4.6 of the sheet placement member 2 are A drive shaft 8 disposed parallel to the Y rail 46, and a first drive roller 1 disposed at a fixed position of the drive shaft 8 to rotate in conjunction with the drive shaft 8.
0, and a second drive roller 20 that is movably attached to the drive shaft 8 in the axial direction via a fixing and fixing release mechanism.
and an actuating device 1 for actuating the locking and locking release mechanism.
10 and the Y rail 46 above the paper placement member 2.
a shaft body 56 disposed parallel to the shaft body; a first pressure roller and an arm 58 rotatably supported at a fixed position of the shaft body 56 in correspondence with the first drive roller 10; a second pressure roller arm 60 supported by the shaft 56 so as to be movable along the shaft 56 and rotatable about the shaft 56; and the first and second pressure roller arms. 58,6
an arm elevating means for raising and lowering the pressure roller mounting side of each of the pressure rollers 0 to press against and away from the first drive roller 10 and the second drive roller 20; a connecting means for connecting the pressure roller arms 60 so as to interlock with each other, and driving the second pressure roller arm 60 with respect to the first pressure roller arm 58 in the Y-axis direction along the shaft body 56. Equipped with an arm drive mechanism,
The drive of the arm drive mechanism is controlled according to the width of the paper conveyed from the automatic paper feeder, and the pressure roller 64 supported by the second pressure roller arm 60 and the second drive roller 20 are controlled. The paper is moved to a predetermined position on the paper that is fed onto the paper placement member 2.

[Effect]

Depending on the width of the paper conveyed from the automatic paper feeder, the controller automatically controls the first pressure roller 62 and the other second pressure roller arm 60.

Move it to the position corresponding to the other side of the paper 5
In conjunction with the movement of the second pressure roller arm 60, the second drive roller 20 moves downward to the other side of the sheet. In this state, one side of the paper is held between the J-th drive roller 10 and the first pressure roller 62, and the second drive roller 20 and the second pressure roller 64 on the other moving side sandwich the paper. Hold the other side of the paper.

〔Example〕

The structure of the present invention will be described in detail below with reference to embodiments shown in the accompanying drawings.

Reference numeral 2 denotes a paper mounting member of a paper-driven automatic drawing machine, that is, a paper moving type plotter, and there is a thin elongated member formed along the direction perpendicular to the plane of the paper in FIG. 5 from near the negative end to the other end. An X motor (not shown) is installed below a relatively long opening 4 having a shape and a relatively short opening 6 formed on an extension line of the opening 4 near the other end of the sheet placement member 2. (omitted) is provided with a drive shaft 8 connected to the drive shaft 8 via a power transmission mechanism. A short fixed position drive roller 10 is fixed to one side of the drive shaft 8, and the surface of the roller 10 is located within the opening 6. As shown in FIG. 2, the drive shaft 8 has four side plate parts L2a and 12b of the frame body 12, into which holes in the side plate parts L2a and 12b are fitted via radial bearings 14 and i6. 8 are integrally formed.

A shaft hole of a short moving drive roller 20 is slidably fitted into the drive shaft 8 , and the surface of the drive roller 20 is disposed within the opening 4 .

One side of the drive roller 20 has a thrust bearing 2
2, and is in contact with the inner surface of the side plate portion 12b. A tapered wall is formed at the end of the shaft hole on the other side of the drive roller 20, and the inclined surfaces of three wedge keys 24 are fitted into the tapered wall.

The wedge keys 24 are slidably fitted into three wedge V-grooves 26 formed along the longitudinal direction of the drive shaft 8, respectively. A shaft hole of a pressing member 28 is slidably fitted into the drive shaft 8, and the pressing member 2
8 is pressed against one side of the wedge key 24 via a slide bearing 32 by the resilient force of a coil spring of 3 degrees. A support #34 protruding from the side plate L2a is slidably fitted into the kite hole formed in the pressing member 28, and the support shaft 34 allows the pressing member 28 to be held parallel to the drive shaft 8. The side plate portion L is movable in a direction.
It is supported by 2a. A solenoid (actuating device) 110 is fixed to the frame 12, and the output shaft of the solenoid 110 is connected to the pressing member 28 via a rope 116 hung between rope pulleys 112 and 114.

When the wedge key 32 is pressed against the tapered wall of the shaft hole of the drive roller 20 by the force of the spring 3o, the drive roller 20 is fixed to the drive shaft 8 by the pressure of the wedge key 32. As shown in FIG. 4, an elongated opening is formed in the sheet placement member 2 in parallel with the openings 4 and 6 over almost the entire width area of the member 2, and below the opening 36. A drive shaft 38 that is connected to an X motor (not shown) via a power transmission mechanism is disposed on the drive shaft 38 .

A drawing roller 40 is fixed to the drive shaft 38 and located within the opening 36 . Reference numerals 42 and 44 denote elastic dustproof covers made of tubular bellows, which are loosely fitted onto the drive shaft 8, and each end of which is locked to the end of the opening 4. , each other end is locked to the outer surface of both side plate parts 12a, 12b of the frame body. The driving roller 10.20 and the drawing roller 4o have substantially the same diameter, and are configured to be rotated by an X motor in the same direction at substantially the same circumferential speed during drawing. Above the paper mounting member 2, a Y rail 46 is installed along the direction perpendicular to the plane of the paper in FIG. It is being Belt pulleys are rotatably disposed at both ends of the Y rail 46, and an endless head moving belt 50 (see FIG. 5) is passed around the belt pulleys. are connected. One of the belt pulleys is connected to the output shaft of a Y motor, and when the Y motor is driven, the belt 50 rotates, and the rotation of the belt 50 causes the printing head 48 to rotate. Y
It is configured to move along rails 46. A pen holder 52 disposed on the drawing head 48 in connection with an elevating drive device holds a writing instrument 54 in a detachable manner. Reference numeral 56 designates a shaft body installed parallel to the Y rail, into which the intermediate portion of a fixed position pressure roller arm 58 is rotatably fitted;
It is rotatably supported in a fixed position so as not to move in the axial direction. The shaft body 56 has a screw structure, and this shaft body 56 is linked to a screw rotation motor 98 controlled by a controller. A tubular inner 106 is screwed into the shaft body 56 , and a rotational center of the movable pressure roller arm 60 is rotatably screwed into the inner 106 via a ball bearing 104 . An annular nut member 105 is screwed into a portion of the screw of the shaft body 56, and one of the connecting arms 18 is fitted onto the outer peripheral surface of the nut member 105 via a radial bearing.

The side surface of the connecting arm 18 and the pressure roller arm 60 are fixed to both ends of the connecting pipe 80. A pressure roller 62. is attached to each one of the pressure roller arms 58.60.
64 is rotatably supported, and the pressure roller arm 58,
Weights 66 and 68 are fixed to each other end of 60. A recessed portion for inserting a spring is formed on the lower surface near each other end of the pressure roller arm 58 and 60, and a hole 70 is transparently provided at the center position of the portion where the recessed portion is formed. A shaft 72 made of a bolt is slidably inserted into the hole 70, and a #172 head 72a is disposed on the upper surface of the pressure roller arm 58.60. The shaft 72
A flanged cylindrical body 74 is fixed to the lower end of the flange. The shaft 7
A coil spring 76 is fitted and compressed between the upper surface of the collar of the cylinder body 74 and the lower surface of the pressure roller arm 58, 60. The lower surface of the #72 head 72a comes into elastic contact with the upper surface of the pressure roller arms 58, 60 due to the elastic force of the coil spring 76, and the shaft 72 is moved by a predetermined amount to the pressure roller arm 58 due to the elastic force of the spring 76. It stands out from .60. 78 in Figure 2,
It is an eccentric cam in the form of an elongated rod suspended perpendicular to the page.
Both ends of the cam 78 are rotatably supported by the fuselage body, and the cam 78 can be moved to one position by operating a lever (not shown).
It is configured so that it can be rotated manually. One end of the connecting arm 18 is slidably fitted into the shaft body 56, and the arm 18 is connected to the pressure roller arm 60 in the wheel axis direction by means of a connecting pipe 80 which is slidably fitted into the shaft body 56. It is rotatably connected to move in conjunction with. As shown in FIG. 2, the body 120 of the paper-driven automatic drafting machine includes a roll paper support means 123 that supports roll paper 122 having different widths, and a roll paper support means 123 for each roll paper support means 123. A cutting device 124 is provided to cut the paper 122 into a predetermined length. By operating the paper size selection key on the operation panel (not shown) provided on the machine body 120, a desired roll paper 122 is selected from among the plurality of roll papers 122, and this roll paper 122 is cut into a predetermined size by the cutting device 124. The cut paper 82 is cut to length and is automatically fed between the drive roller 10.20 and the pressure roller 62.64 by a known automatic paper feeder 126, and placed on the paper mounting member 2 as desired. The paper 82 is configured so that it can be set in accordance with the paper regulating member 86. The operation panel is connected to a controller, and is configured such that a monthly paper width size signal, ie, a roll paper selection signal, from the operation panel is supplied to the controller. Note that the automatic paper feeder 126 has a known configuration, so a detailed explanation thereof will be omitted. FIG. 3 shows another embodiment of a paper-driven automatic drafting machine, and the body 3 of this paper-driven automatic drafting machine removably stores paper cassettes 128 that store sheets of different sizes. A cassette storage section is provided. By operating the paper size selection key on the operation panel (not shown) provided on the machine body 120,
A desired paper cassette 128 is selected from among the plurality of paper cassettes 128.

The paper 82 in the paper cassette 128 is automatically fed between the drive rollers 10, 20 and the pressure rollers 62, 64 by a known automatic paper feed bag [130], and the paper of the desired size is placed on the paper placement member 2. 82 to the paper regulating member 86,
It is configured so that it can be set. The operation panel is connected to a controller, and is configured such that a paper width size signal from the operation panel, that is, a paper cassette selection signal, is supplied to the controller. Note that the automatic paper feeder 130 has a known configuration, so a detailed explanation thereof will be omitted.

Note that the other configuration of the automatic drawing machine is the same as that of the first embodiment.

Next, the operation of this embodiment will be explained with reference to the flowchart shown in FIG.

When the controller starts operating, the controller first determines in decision block 2 whether the roller mounting side of the pressure roller arm, ie, the pinch roller arm 58, 60, is in the normal up position.

If the controller determines the negative, the controller controls the rotation of the motor 94 in block 3, rotates the eccentric cam 78, and sets the roller attachment side of the pressure roller arm 58, 60 to the normal up position by the eccentric pinching portion A thereof. do.

Next, the controller uses 1 judgment block 4 to determine the line head 4.
8 and the positions of the pressure roller arm 60 are recognized. If a negative determination is made, the controller moves to position detection routine 4.

When moving to the position detection routine 4, the one-stroke head 48
Pressure roller arm 58 on the fixed position side along Y rail 46
The sensor 96 detects the mark member M1.
is detected, and the position of the print head 58 in the Y direction is recognized using this detected position as the origin. Next, the controller moves the printing head 58 toward the pressure roller arm 60 on the moving side along the Y rail 46, detects the mark member M2 by the sensor 96, and sets this detection position to the pressure roller arm 60. This is recognized as the position of the roller arm 60. By the above operations, the preparation for controlling the movement of the pressure roller arm is completed (label 6). Next, an automatic paper feeder 126 selection signal is input to the controller from the keyboard or from the host computer. The controller creates five paper width size commands from this selection signal. Based on this paper width size command, the direction and amount of movement of the drive roller 64 is determined in block 8, and based on this determination, the solenoid 110 is energized in block 9. When the solenoid 110 is energized, the tensile force of the rope 116 causes the suppressing member 28 to move to the right in FIG. Then, the fixation of the drive roller 20 to the drive shaft 8 is released. Next, the controller, at block 10, controls the motor 9.
8 to rotate the shaft body 56. This rotation of the shaft body 56 causes the arm 60 to move in a direction according to the paper width size, and in conjunction with this movement, the frame body 12 also moves along the drive shaft 8. When the pressure roller arm 60 is pushed along the shaft body 56, the cylindrical body 74 is only in contact with the eccentric cam 78 due to the weight of the weight 68, so the contact between the cylindrical body 74 and the eccentric cam 78 is There is no significant friction between
The pressure roller arm 60 smoothly presses the shaft 5 with a light pushing force.
Move along 6. Next, the codon roller judges in judgment block 11 whether or not the drive roller 20 and pressure roller 64 have moved to a predetermined position corresponding to one side of the sheet 82 to be used, and if the judgment is affirmative.

Block 12 turns off solenoid 110.

As a result, the pressing member 28 presses the wedge key 24 by the elastic force of the spring 30 7 The wedge key 24 is inserted into the tapered wall of the shaft hole of the drive roller 20, and the drive roller 20 is fixed to the drive shaft 8. be done. Next, block 13
Then, the paper is fed onto the platen 2 from the automatic paper feeder 126, and the paper 82 is set on the paper placement member 2 with its negative end abutting the paper regulating member 86.

Next, in block 14, the controller drives and controls the motor 94 to rotate the eccentric cam 78 and its eccentric bulge B.
When the pressure roller arms 58 and 60 are mounted, the sides of the pressure roller arms 58 and 60 are pushed down to the lowest position, and by the elastic force of the spring 76, the paper is moved between the drive rollers 10 and 20 and the pressure rollers 62 and 60.
Hold between 64. The preparation for drawing is now complete, and the controller shifts to remote mode (block 15). The drawing operation is performed by driving the X motor by the controller, rotating the drive rollers 10 and 20 in forward and reverse directions, and rotating the drawing roller 4.
0 is rotated in the same direction in conjunction with the drive rollers 10 and 20. Further, the Y motor is driven to move the five-line head 48 along the Y rail 46, while the pen holder 52 is controlled to move up and down to bring the writing instrument 54 into contact with or away from the paper on the drawing roller 40. By the above operation, a predetermined pattern is drawn on the paper.

〔effect〕

Since the present invention is configured as described above, it is possible to drive and control the drive roller and pressure roller on the moving side to desired positions, and moreover, the drive rollers and pressure rollers on the moving side can be automatically driven in accordance with the paper size signal from the automatic paper feeder. Since the rollers can be moved, paper of any width can be used. In addition, since only one short drive roller is required for the drive roller on the moving side, the load on the drive shaft is light (this makes it possible to use a motor with low torque, improving the rotation accuracy of the drive roller, etc.). There is an effect.

[Brief explanation of drawings]

Fig. 1 is a flowchart, Fig. 2 is a side view, Fig. 3 is a side view showing another embodiment, Fig. 4 is an external #R drawing, Fig. 5 is an external view, and Fig. 6 is a cross-sectional view. Figure 7 is a sectional view showing the relationship between the drive shaft and the wedge key, Figure 8 is a side view, Figure 9 is an external view, Figures ``'' and 0 are sectional views, and Figure 11 is a sectional view. 2. - Paper placement member, 4, 6... Opening, 8 Drive shaft, 10... Drive roller, 12... Frame, 14.16
... Bearing, 18... Connecting arm, 20 - Drive roller, 22... Thrust bearing, 24... Wedge key, 26... ■Groove, 28... Pressing member, 30...
Coil spring, 32... Thrust bearing, 34...
Support shaft, 36... opening, 38... drive shaft, 40... drawing roller, 42.44... dustproof cover, 46... Y rail, 48... drawing head, 50... belt, 52・
...Pen holder 54 writing instrument, 56 shaft body, 58...
60...Roller arm, 62.64...Pressure roller,
66.68・Weight, 70…hole, 72…shaft,
74... Cylindrical body, 76...: Coil spring, 78...
・Eccentric cam, 8°...Connection pipe, 82...Paper, 8
4. Paper regulating member, 90... Cylinder, 94 placement.

Claims (4)

[Claims] (1) The machine is equipped with an automatic paper feeder that feeds paper of different sizes onto the paper placement member 2, and the paper of a desired size is automatically fed between the drive roller and the pressure roller from the automatic paper feeder. In a plotter configured to feed
6, a drawing head 48 supported movably along the Y rail 46, and a drive disposed parallel to the Y rail 46 below the openings 4 and 6 of the paper placement member 2. axis 8
a first drive roller 10 disposed at a fixed position of the drive shaft 8 to rotate in conjunction with the drive shaft 8;
A second drive roller 20 is attached to the sheet mounting member 2 so as to be movable in the axial direction via a fixing and unfixing mechanism, an actuating device 110 that operates the fixing and unfixing mechanism, and A shaft body 56 disposed parallel to the Y rail 46, and a first pressure roller arm 58 rotatably supported at a fixed position of the shaft body 56 in correspondence with the first drive roller 10. , a second pressure roller arm 60 supported by the shaft body 56 so as to be movable along the shaft body 56 and rotatable about the shaft body 56; and the first and second pressure roller arms 60. arm elevating means for elevating and lowering the pressure roller attachment side of each of the roller arms 58 and 60 to press against and away from the first drive roller 10 and the second drive roller 20; a connecting means for connecting the second pressure roller arms 60 so as to be interlocked with each other; and an arm drive mechanism that drives in the direction, the arm drive mechanism is drive-controlled according to the width of the paper conveyed from the automatic paper feeder, and the pressure roller arm 60 supports the second pressure roller arm 60. A plotter characterized in that the roller 64 and the second drive roller 20 are moved to a predetermined position on the paper that is fed onto the paper placement member 2. (2) In the arm drive mechanism, the shaft body 56 has a screw structure, and the second pressure roller arm 60 or a member interlocking therewith is screwed to the shaft body 56.
2. The plotter according to claim 1, wherein a motor 89 is connected to the plotter. (3) The arm drive mechanism is driven and controlled based on a signal of the width size of the paper to be placed on the paper placement member 2, and the second pressure roller arm 60 and the second drive roller 2 are
2. The plotter according to claim 1, wherein the plotter 0 is moved along the shaft body 56 and the drive shaft 8 to a position corresponding to the paper width. (4) Drive control of the arm drive mechanism based on a detection signal from a paper width size detection sensor disposed on the paper placement member 2, and drive the second pressure roller arm 60 and the second drive roller 20. , the shaft body 56 is placed at a position corresponding to the paper width.
2. The plotter according to claim 1, wherein the plotter moves along the drive shaft 8.