JPS62246759A - Apparatus for cutting recording roll paper for electrostatic plotter - Google Patents

Abstract

PURPOSE:To cut recording roll paper with high accuracy by always stabilizing the feed-in of the recording roll paper, by a method wherein a freely rotatable press roller for contacting the recording roll paper with a drive roller under predetermined pressure is formed of a sponge like material. CONSTITUTION:A press roller 9 feeding recording roll paper 3 while grasping the upper and lower parts thereof along with a feed-in roller 6 is formed of a sponge like material elastically deformed by the pressure contact with the recording roll paper 3 so as to follow the shape of the pressure contact surface of the roll paper 3. Because of this, even when the interval between the feed-in roller 6 and each press roller 9 is different by a mount error or the roller 6 has no out-of-roundness shape and the interval between both rollers 6, 9 changes cyclically, the roller 9 easily and elastically deforms so as to follow said change. Therefore, the grasping force of the recording roll paper does not almost change. As a result, trouble such that the feed speed of the recording roll paper 3 becomes unstable or the recording roll paper 3 meanders is not generated and the recording roll paper 3 can be cut with high accuracy.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a recording roll paper cutting device for an electrostatic plotter, and more particularly to an improvement in a feeding mechanism for controlling the conveyance of recording roll paper.

"Prior Art" Conventionally, as shown in Japanese Patent Application Laid-Open No. 60-34299, a recording roll paper on which drawings of various sizes have been successively recorded by an electrostatic plotter is moved at a predetermined speed by a feeding mechanism. A cutting device for electrostatic plotter recording roll paper is generally known, in which the paper is transported by a cutting mechanism, cut into drawings of various sizes by a cutting mechanism, and discharged from an outlet of a main body case.

``Problems to be Solved by the Invention'' However, this type of conventional recording roll paper cutting device for electrostatic plotters simultaneously drives multiple conveyor belts as a feeding mechanism that controls the conveyance of the recording roll paper. Since we use a drive roller and a conveyance urethane roller that is placed above the drive roller corresponding to each conveyance belt and presses the recording roll paper between the conveyance belt and the conveyance belt, the drive roller or conveyance urethane roller is perfectly round. If not, or if there is variation in diameter or installation errors between the urethane rollers for conveyance, the gripping force of the recording roll paper may change, causing the conveyance speed of the recording roll paper to become unstable. Otherwise, there are problems such as meandering of the recording roll paper, and accurate cutting cannot be expected.

The present invention was made in view of the current situation, and it is an object of the present invention to provide a recording roll paper cutting device for an electrostatic plotter that can cut the recording roll paper with high precision while constantly stabilizing the feeding of the recording roll paper. shall be.

The present invention provides a rotatable presser roller that presses the recording roll paper against the drive roller with a predetermined pressure, and an elastic press roller that follows the shape of the pressing surface by pressing the recording roll paper against the drive roller. It is characterized by being made of a deformable spongy material.

"Function" In the cutting device for recording roll paper for an electrostatic plotter according to the present invention, the presser roller, which holds and conveys the recording roll paper vertically together with the drive roller, is pressed against the recording roll paper to shape the pressed surface. Since it is made of a sponge-like material that elastically deforms according to the pattern, the distance between the drive roller and the 8 presser rollers may differ due to installation errors, or the drive roller may not be a perfect circle and the distance between the presser roller and the presser roller may be cyclic. Even when the pressure changes, the presser roller easily deforms elastically and the gripping force for the recording roll paper remains almost the same.As a result, the conveyance speed of the recording roll paper becomes unstable. In addition, problems such as meandering of the recording roll paper do not occur.

"Example" An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a cross-sectional view showing the overall configuration of a cutting device for recording roll paper for an electrostatic plotter according to the present invention.
is a recording roll paper 3 that is removably placed and fixed on an electrostatic plotter 2 and subjected to predetermined graphic processing by the electrostatic plotter 2.
is supplied to the entrance portion of the main body case 4 having a paper feed tray 4a.

As shown in FIG. 1, a paper feed sensor 5 is installed at the entrance of the main body case 4 to detect whether the recording roll paper 3 is fed to the cutting device l. Upon paper feed detection, a feed roller 6, which will be described later, is driven, and the recording roll paper 3 is conveyed to a position where the leading edge thereof is slightly past a horizontal cutting mechanism 7, which will be described later.

The feed roller 6 is composed of a plurality of rubber rollers θa arranged at predetermined intervals in the width direction of the recording roll paper 3, as shown in FIGS. 1 and 2, and each rubber roller 6a is connected to one drive shaft 8. It is mounted on a shaft and rotated at the same time.

The upper part of each of these rubber rollers 8a is shown in FIGS.
As shown in the figure, presser rollers 9 made of open-celled synthetic resin foam in the shape of a sponge are arranged rotatably, and the recording roll paper 3 is held at the feed roller 6.
is driven to pass between both rollers 6.9 and into the lateral cutting mechanism 7 side.

As shown in FIG. 2, a roller lO is attached to the central portion of the drive shaft 8 in the longitudinal direction, and this roller lO has the following features:
The encoder roller lla of the encoder 11 fixed above the drive shaft 8 is pressed into contact with the encoder 11, and the rotation of the roller 10 is transmitted to the encoder 11 via the encoder roller lla, so that the feed amount of the recording roll paper 3 is detected. There is. A barcode reader 12 is installed above one end of the drive shaft 8 in the longitudinal direction, as shown in FIG. 2, to read a barcode written on one end of the recording roll paper 3 in the width direction. This barcode will be explained in detail later.

The horizontal cutting mechanism 7 is installed on the exit side of the feed roller 6 and the presser roller 9, as shown in FIG.
The recording roll paper 3 fed in by the roller 6.9 is cut in the width direction.

As shown in FIGS. 1 and 3, this lateral cutting mechanism 7 includes a guide rail 13 fixedly installed inside the main body case 4,
It is equipped with a moving block 15 that reciprocates along the guide rail 13 via a guide roller 14 that rolls on the guide rail 13, and the moving block 15 has a tension roller 16 as shown in FIG. Both ends of a drive wire 18 wound around the drive roller 17 are fixed, and the drive wire 18 is reciprocated along the guide rail 13 by forward and reverse rotation of the drive roller 17.

As shown in FIGS. 1 and 3, this moving block 15 is also rotatably attached to a round blade 18 and a rolling wheel 20 made of rubber, for example, which has a predetermined elasticity and is integral with the round blade 18. At a position below the blade 19 and the rolling wheel 20, there is a band-shaped lower blade 21 that works together with the round blade 19 to cut the recording roll paper 3, and a pressing plate 22 that presses the recording roll paper 3 onto the lower blade 21. Each is arranged.

The holding plate 22 is formed into a band shape, for example, from a hard plastic thin plate having a predetermined elasticity, and as shown in FIG. Support members 23 are interposed at positions closer to the sides, and the recording roll paper 3 is inserted through an area surrounded by the lower blade 21, the pressing plate 22, and the support members 23 on both sides. Further, as shown in FIG.
1, and the rolling wheels 20 move on the upper surface of the holding plate 22 while pressing it downward.

That is, the tension roller 1B and the drive roller 17 are installed at a slightly lower position than the moving block 15, as shown in FIG.
8, both rollers 1B with the moving block 215 position as the apex;
1? The movable block 15 is stretched with a downward slope toward the movable block 15, so that a downward pressing force is always applied to the movable block 15.

The pressing plate 22 is elastically deformed by the force, and for example, when the movable block 15 is located between the supporting members 23, the pressing plate 22 curves downward in a convex manner, and the lower blade 21, and when the movable block 15 is located between each of the fulcrum members 23 and the connecting plate 24, the holding plate 22 is curved upward in a convex manner. The pressing force on the recording roll paper 3 is released.

As shown in FIG. 1, at the output side of the horizontal cutting mechanism 7 configured as described above, there are an upper feeding roller 25 for feeding out the recording roll paper 3 cut by the horizontal cutting mechanism 7, a lower feeding roller 2B, and a lower feeding roller 2B. A side slitter 27 that cuts edges at both ends of the recording roll paper 3 in the width direction, and a longitudinal cutting mechanism 2 that cuts the recording roll paper 3 along its longitudinal direction.
8 are respectively provided, and a control device 29 for controlling the cutting device 1 is provided in the upper part of the main body case 4.

As shown in FIG. 4, the feed roller 25 is composed of a plurality of rubber rollers 25a arranged at predetermined intervals in the width direction of the recording roll paper 3, and each rubber roller 25a is
They are arranged in pairs and are rotatably mounted around the support shaft 30.

Further, as shown in FIG. 4, the lower feed roller 26 is composed of a plurality of rubber rollers 28a that are rotatably attached to portions of the drive shaft 31 corresponding to the respective rubber rollers 25a and are pressed against the respective rubber rollers 25a from below. , the rubber rollers 28a are simultaneously driven to rotate by the rotation of the drive shaft 31.

As shown in FIG. 4, the drive shaft 31 also includes rollers 33 that constitute the side slitter 27 together with round blades 32 located at both ends of the recording roll paper 3 in the width direction. Rollers 35 are each pivotally attached to the receivers that constitute the vertical cutting mechanism 28 together with the round blade 34 located in the intermediate portion, and rotate integrally with the drive shaft 31.

As shown in FIG. 5, each of the round blades 32 and 34 is rotatably supported via a fulcrum pin 3B at one end of an L-shaped arm 37 attached to the fixed side so as to be able to swing up and down. An armature 39 is provided at the other end of the arm 37 and moves downward in the drawing when a solenoid 38 is energized to swing the L-shaped arm 37 counterclockwise. Further, as shown in FIG. 5, an L-shaped arm 3
A spring 40 is attached that always biases the clockwise movement. Then, by cutting off the power to the solenoid 38, the L-shaped arm 37 swings clockwise due to the biasing force of the spring 40, as shown by the chain line in FIG.
2.34 escapes to one side and stops cutting the recording roll paper 3.

In addition, in FIG. 1, 41 is a paper discharge sensor for detecting the completion of paper discharge.

FIG. 6 shows the recording roll paper 3 fed into the cutting device 11. The recording roll paper 3 has ears 42a and 42b left at both ends in the width direction, and a leading end 43 at the leading end in the longitudinal direction. The drawings from AO to ^4 are filled in consecutively as they are left. In addition, bar codes Be, Old, B2, which correspond to the drawings of each size, are placed at the portions of the one ear portion 42a corresponding to the beginning of the drawings of each size.
, B3, and 84 are filled in, respectively, and these barcodes are BO, Bl, and B2.

B3. By reading B4 with the barcode reader 12, the cutting mechanisms 7, 28, etc. are controlled according to the contents.

Next, the effect will be explained.

When the recording roll paper 3 is fed from the paper feed tray 4a of the main body case 4, the paper feed sensor 5 detects this and drives the drive shafts 8, 31.
is driven, and the recording roll paper 3 is fed into the main body case 4 through between the feed roller 6 and the presser roller 9. At the same time, the first barcode BO is read by the barcode reader 12 and stored in the memory of the control device 29, and the encoder 11 measures the feeding amount of the recording roll paper 3. and encoder 11
If the feed amount measured by becomes the specified value,
The driving of both moving shafts 8 and 31 is temporarily stopped. Specifically, when the leading edge of the AO drawing of the recording roll paper 3 shown in FIG. 6 comes to the cutting position by the lateral cutting mechanism 7, both the moving shafts 8 and 31 temporarily stop. At this time, the leading edge 43 of the recording roll paper 3 is connected to the upper and lower feed rollers 25,
2B, and the side slitter 27 and the vertical cutting mechanism 2B have their round blades 32
, 34 have escaped to both directions as shown by the chain lines in FIG.

Next, the drive roller 17 of the lateral cutting mechanism 7 is driven, and the moving block 15 moves along the guide rail 13. When the moving block 15 moves, the rolling wheels 20 rotate due to the frictional resistance since they are in pressure contact with the holding plate 22.
This causes the round blade 18 to also rotate. For this reason,
The recording roll paper 3 is cut by the round blade 1B and the lower blade 21, and the leading end portion 43 is separated from the other portions. At this time, since the rolling wheels 20 are in pressure contact with the pressing plate 22, the rolling wheels 20
0 rolls between both fulcrum members 23, the holding plate 2
The blade 2 is elastically deformed in a downwardly convex manner and holds the recording roll paper 3 between it and the lower blade 21 . Therefore, the recording roll paper 3 does not move during cutting, and good and accurate cutting is possible. When the rolling wheel 20 moves between the fulcrum member 23 and the connecting member 24, the pressing plate 22 is elastically deformed in a convex upward direction, and the pressing force on the recording roll paper 3 is released. After the leading edge 43 of the recording roll paper 3 is cut in this manner by the lateral cutting mechanism 7, the drive shaft 31 is driven and the leading edge 77843 is discharged by the upper and lower feed rollers 25 and 28. The completion of this ejection is detected by the paper ejection sensor 41.

When the sheet ejection sensor 41 detects the completion of sheet ejection, the side slitter 27 and the round blades 32.degree. 34 of the vertical cutting mechanism 28 are set in accordance with the information of the read barcode BO. Specifically, since the information of the barcode BO indicates the drawing of AO, the solenoid 38 of the vertical cutting mechanism 28 is not energized, but only the solenoid 38 of the side slitter 27 is energized. As a result, only the round blade 32 is in the cutting state shown by the solid line in FIG.

Simultaneously with or in succession to this setting of the round blade 32, both moving shafts 8, 31 are driven, and feeding of the recording roll paper 3 is restarted. This feed amount is measured by the encoder 11, and when the measured value matches the drawing dimension of the AO, the feeding of the recording roll paper 3 is stopped again.

By the way, at the time when the feeding of the roll paper 3 is resumed, the leading edge of the drawing of the AO is at the cutting position of the horizontal cutting mechanism 7. If the feeding of the recording roll paper 3 is stopped again when the measured values match the dimensions of the AO drawing, the boundary line between the AO drawing and the AI drawing will be exactly at the cutting position of the lateral cutting mechanism 7. become. Also, at this time, A
On the tip side of the drawing of O, there are already upper and lower feed rollers 25.
, 28, the side slitter 27 cuts both ear portions 42a, 42b during this time. Also, since the leading end side of the drawing A1 has already passed the position of the feed roller 6, the barcode reader 1
2, the barcode Bl is read.

After the feeding of the recording roll paper 3 is stopped again in this way, the horizontal cutting mechanism 7 is started and the AO
The boundary line between the drawing and the A1 drawing is cut. After this cutting, only the drive shaft 31 is driven, and the AO drawing is ejected by the upper and lower delivery rollers 25 and 2B, and
The side slitter 27 cuts both ear portions 42a and 42b.

Thereafter, drawings A1 to A4 are sequentially cut in the same manner. However, in the case of drawings of A2 or smaller, the 6th
As is clear from the figure, it is necessary to cut the recording roll paper 3 in the &f direction as well, so each barcode 82 to B
Based on the information in FIG. 4, an energization command is issued from the control device 29 to the solenoid 38 of a predetermined vertical cutting mechanism 28, thereby setting the round blade 34 to the cutting state shown by the solid line in FIG. Then, predetermined cutting is performed, and barcodes BO to B4 corresponding to each drawing size are written on one edge 42a of the recording roll paper 3, and this is read with the barcode reader 12. Since the encoder 11 measures the feeding amount of the recording roll paper 3, and the control device 28 controls both cutting mechanisms 7 and 2B based on this, barcodes do not remain on each drawing after cutting. This eliminates the need for drawings to be smeared with barcodes.

In addition, since it is only necessary to install the barcode reader 12 at a position corresponding to one edge 42a of the recording roll paper 3,
The number of sensors can be significantly reduced compared to conventional ones,
The device configuration is simplified and miniaturization is possible.

Furthermore, the presser roller 9, which feeds the recording roll paper 3 in cooperation with the feed roller 6, is formed into a spongy shape from open-cell synthetic resin foam, so that even if the distance from the rubber roller 6a changes, the recording roll The clamping force for paper 3 remains almost unchanged. Therefore, the profit taken by the rubber roller 6a is due to an error.
Even if the distance between the rubber roller 6a changes or the rubber roller 6a is distorted, a stable clamping force for the recording roll paper 3 can always be obtained, and there will be no problems such as the recording roll paper 3 being fed in a meandering manner.

In addition, since the horizontal cutting mechanism 7 is constructed using a round blade 18, it can be made smaller and lighter than a conventional rotary cutter unit, and this, combined with the reduction in the number of sensors, significantly reduces the size of the device. becomes possible.

In addition, since the vertical cutting mechanism 28 is arranged on the output side of the horizontal cutting mechanism 7, when moving from cutting an A1 drawing to cutting an A2 drawing, for example, the recording roll is cut between two A2 drawings. The cut line along the longitudinal direction of the paper 3 is At
The cut line that cuts the boundary line between the A2 drawing and the A2 drawing may be cut past the A1 drawing, or conversely, the cut line that cuts the boundary line between the AI drawing and the A2 drawing. There are no problems such as the two A2 drawings not being completely separated.

In addition, since the position of the horizontal cutting mechanism 7 is used as the measurement reference point of the encoder 11, if the encoder 11 is installed on the entry side of the horizontal cutting mechanism 7, the distance from the horizontal cutting mechanism 7 will not be a problem. Therefore, installation errors can be absorbed and highly accurate cutting is possible.

In the above embodiment, a bar code is used as an identification mark to identify drawings of each size, and the bar code is detected by the bar code reader 12. Detection may be performed using a photoelectric element.

``Effects of the Invention'' - As explained above, the present invention has the following advantages: The recording roll paper is pressed against the drive roller with a predetermined pressure, and the rotatable presser roller that constitutes the feeding mechanism is pressed against the recording roll paper. Since it is made of a sponge-like material that elastically deforms to follow the shape of the surface, the distance between the 8 presser rollers and the drive roller may be different due to installation errors, or the drive roller is not a perfect circle and the presser roller is not the same. Even if the distance between the recording roll paper and the recording roll paper varies periodically, the presser roller easily elastically deforms in accordance with this change, and therefore the clamping force for the recording roll paper can be kept almost constant without changing much. Therefore, there are no problems such as the transport speed of the recording roll paper becoming unstable or the recording roll paper meandering, and the feeding of the recording roll paper is always stable and the recording roll paper can be cut with high precision. .

[Brief explanation of drawings]

FIG. 1 is a sectional view of a cutting device showing an embodiment of the present invention, FIG. 2 is an explanatory view showing the configuration of the inlet portion of the cutting device, FIG. 3 is an explanatory view showing the configuration of the horizontal cutting mechanism, and FIG. FIG. 4 is an explanatory diagram showing the configuration of the exit portion of the cutting device, FIG. 5 is an enlarged view of the main part of FIG. 4, and FIG. 6 is an explanatory diagram showing the recording roll paper cut by the cutting device according to the present invention. be. 1-m-cutting device, 2-m-electrostatic plotter, 3-m-recording roll paper, 4-m-body case, 8-11 feed roller, 8a-m-rubber roller, 71--lateral cutting Mechanism, 8-m-drive shaft, 8--one presser roller, 25--eleven upper delivery roller, 26-lower delivery roller, 27-side slitter, 28-vertical cutting mechanism.

Claims (1)

[Claims] 1) A recording roll paper on which drawings of various sizes have been continuously recorded by an electrostatic plotter is fed into the main body case by a feeding mechanism arranged at the entrance of the main body case, and the feeding mechanism is In a recording roll paper cutting device for an electrostatic plotter that cuts drawings of various sizes using a cutting mechanism arranged on the output side and discharges them from an exit section of a main body case, the feeding mechanism is arranged at a position below the recording roll paper. a drive shaft, a plurality of drive rollers that are fixed to the drive shaft at arbitrary intervals in the axial direction and are rotationally driven by the rotation of the drive shaft; and a rotatable presser roller that presses the recording roll paper onto each drive roller with a predetermined pressure.
A cutting device for recording roll paper for an electrostatic plotter, characterized in that the pressing roller is made of a sponge-like material that elastically deforms to follow the shape of the pressed surface when pressed against the recording roll paper. 2) The cutting device for recording roll paper for an electrostatic plotter according to claim 1, wherein the sponge-like material is an open-celled synthetic resin.