JP3281179B2 - Roll sheet feeding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll sheet feeding apparatus, and more particularly, to a roll type sheet feeding apparatus, such as a plotter apparatus, a printer apparatus, or a cutting apparatus, which is capable of performing a predetermined process on a sheet. The present invention relates to a roll sheet supply device that continuously supplies a sheet using a roll sheet obtained by winding a sheet into a roll.

[0002]

2. Description of the Related Art As one of various devices for performing a predetermined process on a sheet, such as a plotter device, a printer device or a cutting device, for example, it is operated under the control of a microcomputer and output from a host computer. Paper, marking,
2. Description of the Related Art There is known an image creation and clipping apparatus for creating an image such as a character, a figure, or a symbol on a sheet such as a film, and performing clipping.

When feeding sheets to such an image forming and cutting apparatus, single sheets cut into a predetermined size are supplied manually one by one, or a cassette or a cut sheet feeder is mounted. For example, a single leaf sheet is automatically supplied each time one operation is completed, or a roll sheet wound in a roll is continuously supplied.

[0004] By the way, as a conventional roll sheet feeding apparatus for continuously feeding a roll sheet to an image forming and cutting apparatus, for example, as shown in FIG. 4 or FIG. The set type is known, and the used amount of the sheet is manually drawn out in advance, or the used amount is sequentially drawn out by the sheet feeding mechanism in the image creating and cutting device, so that the image forming and cutting device is used. The roll sheet 100 was continuously supplied.

Further, a roll sheet feeding apparatus in which a tension roller 104 is provided on a sheet feeding table 102 as shown in FIG. 6, for example, to reduce the impact when the sheet is suddenly pulled out, is also known.

[0006]

However, in the above-mentioned conventional roll sheet feeding apparatus, the roll portion coasts due to the force of pulling out the sheet, and the sheet is sent out from the roll portion more than the roll portion is about to be pulled out. There has been a problem that the sheet may be entangled between the image creating and cutting device and the roll sheet supply device due to complicated bending or folding.

Further, if a sheet is fed with a broken line or a bent habit, the sheet interferes with a sheet feeding mechanism of an image forming and cutting apparatus, and is damaged, or an accurate image cannot be formed or cut out. There was a point.

Further, in order to eliminate the entanglement of the sheet, it is necessary to manually rewind the sheet,
In order to remove the parts with broken lines or bent habits, temporarily stop the operation of the image creation and cropping device,
Since it is necessary to re-feed the sheet after cutting off a portion having a broken line or a bending habit, there is a problem that it takes time and effort and the work efficiency is significantly reduced.

The present invention has been made in view of such various problems of the prior art, and has as its object to provide an apparatus for creating and clipping an image based on image data. When supplying a continuous sheet using a roll sheet in which a long sheet is wound into a roll, a predetermined tension is applied to the sheet to various devices that perform a predetermined process on such a sheet. An object of the present invention is to provide a roll sheet supply device capable of preventing breakage or breakage due to loosening.

[0010]

In order to achieve the above object, a roll sheet feeding apparatus according to the present invention winds a long sheet into a roll around various devices for performing a predetermined process on the sheet. In a roll sheet feeding apparatus for continuously feeding a sheet using a roll sheet, a bearing provided on a base, and inserted into the center of the roll sheet and supported by the bearing, and at least one end thereof A roll support shaft having a brake drum fixed to a portion thereof, a brake device installed to be able to freely contact and separate from the outer peripheral surface of the brake drum fixed to the roll support shaft, and a predetermined The present invention has a tension device for applying tension and an operation rod connecting the brake device and the tension device.

The brake device comprises a brake roller fixed to the roll support shaft and coming into contact with and separated from the outer peripheral surface of the brake drum, and a brake arm having the brake roller rotatably attached to a tip end thereof. The base end of the brake arm is pivotally supported at a predetermined position on the base.

Further, the tension device includes a tension roller around which the sheet fed from the roll sheet is wound, a tension arm having the tension roller rotatably attached to a tip end, and a tension arm between the tension arm and a base. The tension arm has a base end portion pivotally supported at a predetermined position on the base.

Further, the operating rod has one end locked to the shaft end of the brake roller attached to the brake arm, and the other end opposite to the fulcrum of the tension arm opposite to the tension roller. The brake roller is brought into contact with the brake drum by the spring for applying a predetermined urging force to the tension arm, and the brake state is maintained.

[0014]

According to the present invention, based on such a configuration,
When a sheet feeding mechanism of various devices for performing a predetermined process on a sheet is operated and a pulling force is applied to the sheet unwound from the roll sheet, the tensioning device opposes the biasing force of the spring to advance the sheet. The brake device is separated from the outer peripheral surface of the brake drum through the operation rod by the operation of the tension device, and the brake is released, so that the sheet can be pulled out from the roll sheet.

When the roll sheet coasts due to the force of the sheet being pulled out by a sheet feeding mechanism of various apparatuses for performing a predetermined process on the sheet and the sheet is slackened, the tension device is operated. Since the spring is pulled back to the opposite side to the traveling direction of the seat, the operation of the tension device causes the brake device to be pressed against the outer peripheral surface of the brake drum via the operation rod, and a brake state is set.

Therefore, when the brake device is operated, the rotation of the roll support shaft is stopped, and the inertial rotation of the roll sheet non-rotatably mounted on the roll support shaft is stopped. The adverse effects such as bending or folding of the sheet are eliminated.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a roll sheet feeding apparatus according to the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a side view showing a roll sheet feeding apparatus according to a first embodiment of the present invention.
The image creation and cropping device 10 is mainly composed of a host
A main unit 12 to which a signal of image data from a computer (not shown) is input; an operation unit (not shown) for controlling the overall operation and instructing various processes; an inkjet head and cutting An output unit 14 having a head and the like, a platen roller 18 for feeding a long sheet 16 fed from a roll sheet feeding device 30 described later in the X direction, and a stepping motor (not shown) for rotating the platen roller 18 And so on.

An output section 14 having an ink jet head, a cutting head, and the like is supported by both side frames 20 which are fixing members of the image forming and cutting apparatus 10, and is arranged at right angles to the traveling direction of the sheet 16. It is mounted movably in the Y direction along the guide rail.

The ink-jet head and the cutting head are mounted on the output unit 14 via a carriage 22, and each carriage 22 is slidably mounted in a vertical direction by a signal from an operation unit. I have.

The sheet 16 is held between the sheet feed roller 28 and the platen roller 18 by the operation of a sheet feeding lever 26 provided in the sheet feeding section 24 of the image forming and cutting apparatus 10, and is rotated by the rotation of a stepping motor. It is sent in the direction.

Incidentally, the above-mentioned image creating and cutting apparatus 1
The operation unit 0 is provided with an operation panel, a display unit for displaying an operation state, cursor keys for specifying the positions of the inkjet head and the cutting head,
A start area setting key for designating an area of a predetermined portion where image creation or clipping should be started based on a signal of image data, an operation start key for starting image creation or clipping from the set start area, etc. Are arranged.

The roll sheet feeder 30 includes bearings 34 provided at both ends on a base 32, a roll support shaft 38 having a brake drum 36 fixed to one end, and a roll support shaft 38 fixed to the roll support shaft 38. And a tension device 42 for applying a predetermined tension to the unfolded sheet 16.
And an operation rod 46 that connects the brake device 40 and the tension device 42 to each other.

A roll support shaft 38 is non-rotatably inserted into the center of the roll sheet 48 formed by winding the long sheet 16 in a roll shape. The roll support shaft 38 is attached to the bearing portion 34 of the base 32. It is rotatably supported.

The leading end of the sheet 16 fed from the roll sheet 48 is guided to the sheet supply section 24 of the image forming and cutting device 10 via the tension roller 56 of the tension device 42.

The brake device 40 includes a roll support shaft 3
8 and a brake roller 50 which comes into contact with and separates from the outer peripheral surface of the brake drum 36, and a brake arm 52 which has the brake roller 50 rotatably attached to the distal end thereof. Is pivotally supported via a fulcrum 54 at a predetermined position on the side wall of the wing.

The tensioning device 42 includes a tension roller 56 around which the sheet 16 unwound from the roll sheet 48 is wound, a tension arm 58 having a tension roller 56 rotatably attached to a tip end thereof, and a predetermined attachment to the tension arm 58. The tension arm 58 includes a spring 44 for applying force.
Of the tension arm 56 at a predetermined position on the side surface of the
A spring 44 is provided between the middle portion of the base 32 and the rear end of the base 32.
The tension roller 56 is pulled by a predetermined tension of the spring 44 in the direction opposite to the traveling direction of the sheet 16.

One end of an operation rod 46 connecting the brake device 40 and the tension device 42 is connected to the brake arm 5.
2, the other end of the brake roller 50 is locked at a predetermined position on the opposite side of the tension roller 56 from the fulcrum 60 of the tension arm 58, and the tension arm 58 is pulled. Of the brake roller 5 of the brake device 40
0 is brought into contact with the brake drum 36, and the brake state is maintained.

In the above configuration, during operation, first, the leading end of the sheet 16 fed from the roll sheet 48 installed in the roll sheet supply device 30 is imaged via the tension roller 56 of the tension device 42. While being guided to the paper supply unit 24 of the creation and cutting device 10,
The sheet is sandwiched between the sheet feed roller 28 and the platen roller 18 by the operation of a sheet feeding lever 26 provided in the sheet feeding unit 24 of the image creating and cutting apparatus 10, and is fed in the X direction by the rotation of a stepping motor. I have.

Next, when the sheet feeding mechanism of the image forming and cutting apparatus 10 is operated and a tensile force acts on the sheet 16, the tension arm 58 of the tensioning device 42 advances the sheet 16 against the tension of the spring 44. Rotate in the direction. The rotation of the tension arm 58 causes the brake roller 50 of the brake device 40 to be moved via the operation rod 46.
Is separated from the outer peripheral surface of the brake drum 36 and the brake is released, so that the sheet 16 can be pulled out from the roll sheet 48.

When the roll sheet 48 is coasted by the force of the sheet feeding mechanism of the image forming and cutting apparatus 10 being pulled out and the sheet 16 is loosened, the tension arm of the tensioning device 42 is used. 58
Is rotated by the spring 44 in the direction opposite to the traveling direction of the seat 16 and is pulled back. Then, by the rotation of the tension arm 58, the brake roller 50 of the brake device 40 is pressed against the outer peripheral surface of the brake drum 36 via the operation rod 46, and a braking state is realized.

Accordingly, the rotation of the roll support shaft 38 is stopped, and the roll sheet 4 attached to the roll support shaft 38 is stopped.
Since the inertial rotation of the sheet 8 is stopped, the sheet 16 is not pulled out excessively, and the adverse effects such as the sheet 16 being bent or folded are eliminated.

FIG. 2 is a side view showing a roll sheet feeder according to a second embodiment of the present invention, and FIG. 3 is a perspective view showing a main part of the roll sheet feeder shown in FIG. Regarding the same or equivalent configuration as each configuration of the roll sheet feeding apparatus according to the first embodiment shown in FIG.
The same reference numerals as in FIG. 1 denote the same parts, and a part of the description will be omitted. Also, the image creation and clipping device 10
Is the same as the configuration described in the first embodiment, and a detailed description thereof will be omitted.

The image creating and clipping device 10 is installed via a left and right support 66 on a carriage 64 on which a caster 62 that can freely move to a predetermined place is mounted.
The support 66 is set at a height suitable for the operation posture of the operator. Also, an image creation and clipping device 1
The roll sheet supply device 30 that supplies the long sheet 16 wound in a roll shape around 0 is installed close to the support 66 on the carriage 64 in order to reduce the installation space.

A bearing portion 34 is fixed on the carriage 64. The bearing portion 34 has a brake drum 36 at one end.
The roll support shaft 38 which fixes the
A central portion of a roll sheet 48 formed by winding the long sheet 16 in a roll shape is inserted into the roll support shaft 38 so as not to rotate.

On the carriage 64, a bracket 68 is provided.
A fulcrum 54 of a brake arm 52 is rotatably pivoted through the brake arm 52, and a brake roller 50 attached to the tip of the brake arm 52 is in contact with the outer peripheral surface of the brake drum 36 fixed to the roll support shaft 38. It is detachable.

The tension device 42 for applying a predetermined tension to the sheet 16 fed from the roll sheet 48 includes a support 66
The bracket 70 is pivotally supported via a fulcrum 60 of a bracket 70 fixed to a predetermined position, and an idler 72 is installed at a predetermined position of the bracket 70. And
The tension roller 56 of the tension arm 58 is set away from the idler 72 and rotated toward the support column 66 by a spring 44 stretched between the support column 66 and the tension arm 58.

Accordingly, the leading end of the sheet 16 fed out of the roll sheet 48 passes through the tension roller 56 of the tensioning device 42 and the idler 72 installed on the bracket 70, and is used for image formation and installation on the support 66. The tension roller 56 is rotated in a direction away from the idler 72 by the pulling force of the spring 44 and is pulled to the side opposite to the unwinding direction by the pulling force of the spring 44 to apply a predetermined tension. Is to be granted.

Since the tension arm 58 is pulled away from the idler 72 by the spring 44, the brake rod 40 is connected to the brake rod 40 and the tension rod 42 by the operation rod 46.
Is in contact with the brake drum 36, and the brake state is maintained.

In FIG. 2, reference numeral 74 denotes a hopper for receiving a sheet that has been subjected to image creation and cutout by the image creation and cutout device 10, and is foldably mounted on the support 66.

In the above-described configuration, during operation, first, the leading end of the sheet 16 fed from the roll sheet 48 of the roll sheet supply device 30 forms an image via the tension roller 56 and the idler 72 of the tension device 42. The sheet feed roller 2 is guided to the sheet feeding unit 24 of the cutting device 10 and operated by a sheet feeding lever 26 provided in the sheet feeding unit 24 of the image forming and cutting device 10.
8 and the platen roll 18, and is fed in the X direction by rotation of a stepping motor.

Next, when the sheet feeding mechanism of the image forming and cutting device 10 is operated and a tensile force acts on the sheet 16, the tension arm 58 of the tension device 42 is moved in the traveling direction of the sheet 16 against the tension of the spring 44. And the tension roller 56 approaches the idler 72, and the rotation of the tension arm 58 causes the brake roller 5 of the brake device 40 via the operation rod 46.
Since 0 is separated from the outer peripheral surface of the brake drum 36 and the brake is released, the sheet 16 can be pulled out from the roll sheet 48.

When the roll sheet 48 coasts due to the force of the sheet 16 having a predetermined length being pulled out by the sheet feeding mechanism of the image forming and clipping apparatus 10 or the sheet 16 having the hanging weight loosens due to its own weight, tension is applied. Device 42
The tension arm 58 is pulled back by the spring 44, and the tension roller 56 is separated from the idler 72 and pulled back to the opposite side to the direction in which the sheet 16 is fed out, so that the rotation of the tension arm 58 causes the brake device to be moved via the operation rod 46. 40 brake rollers 50
Is pressed against the outer peripheral surface of the brake drum 36 to be in a braking state.

Accordingly, the rotation of the roll support shaft 38 is stopped, and the roll sheet 4 attached to the roll support shaft 38 is stopped.
Since the inertial rotation of the sheet 8 is stopped, the extra draw-out of the sheet 16 and the slack of the sheet 16 hanging down by its own weight are absorbed, and the adverse effects such as the sheet 16 being bent or folded are eliminated.

In each of the above-described embodiments, by attaching rubber or the like having a large friction coefficient to the outer peripheral surface of the brake drum 36, the braking function can be enhanced, and the tension device 42 can be provided with a tensile force. By setting the spring constant of the spring 44 to an appropriate value, it is possible to appropriately set the tension applied to the sheet 16 to be supplied to the image creating and cutting device 10 and the like.

In each of the above-described embodiments, the roll sheet supply device 30 is connected to the image forming and cutting device 1.
Although the case of using 0 has been described, the present invention is not limited to this, and it is needless to say that the present invention may be applied to various plotter devices, printer devices, cutting devices, and the like.

Further, in each of the above-described embodiments, the brake device 40 is configured such that the brake roller comes into contact with and separates from the outer peripheral surface of the brake drum 36. However, the present invention is not limited to this. Alternatively, even if a torque limiter, a brake lever, or the like is used, the same function and effect can be obtained, and these may be appropriately selected.

[0048]

Since the present invention is configured as described above, it has the following effects.

When a sheet feeding mechanism of various devices for performing a predetermined process on the sheet is operated and a tensile force is applied to the sheet, the tension device rotates in the sheet advancing direction against the tension of the spring. By the rotation of the tension device, the brake device is separated from the outer peripheral surface of the brake drum via the operation rod and the brake is released, so that the sheet can be pulled out from the roll sheet.

Further, when the roll sheet coasts due to the force of the sheet being pulled out by a sheet feeding mechanism of various apparatuses for performing a predetermined process on the sheet and the sheet is loosened, tension is applied to the sheet. Since the device is pulled back by the spring in the direction opposite to the sheet advancing direction, the rotation of the tension device causes the brake device to be pressed against the outer peripheral surface of the brake drum via the operating rod to be in a braking state.

That is, according to the present invention, since the inertial rotation of the roll sheet attached to the roll support shaft is stopped, the sheet is not pulled out excessively, and the sheet is bent or folded, or the sheet is folded. It is possible to eliminate the problem that the sheet is entangled between the roll sheet and various devices that perform the predetermined processing.

[Brief description of the drawings]

FIG. 1 is a side view showing a roll sheet feeding device according to a first embodiment of the present invention.

FIG. 2 is a side view showing a roll sheet supply device according to a second embodiment of the present invention.

FIG. 3 is a perspective view illustrating a main part of the roll sheet supply device illustrated in FIG. 2;

FIG. 4 is a schematic explanatory view showing a configuration of a conventional roll sheet supply device.

FIG. 5 is a schematic explanatory view showing a configuration of a conventional roll sheet supply device.

FIG. 6 is a schematic explanatory view showing a configuration of a conventional roll sheet supply device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Image creation and cut-out device 30 Roll sheet supply device 32 Base 34 Bearing part 36 Brake drum 38 Roll support shaft 40 Brake device 42 Tension device 44 Spring 46 Operating rod 48 Roll sheet 50 Brake roller 52 Brake arm 56 Tension roller 58 Tension arm

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B65H 19/10 B65H 23/182

Claims (4)

(57) [Claims] 1. A roll sheet feeding apparatus for continuously feeding a sheet using a roll sheet obtained by winding a long sheet into a roll to various apparatuses for performing a predetermined process on the sheet. A bearing portion provided; a roll support shaft inserted into the center of the roll sheet and supported by the bearing portion, and a brake drum fixed to at least one end portion; and a roll support shaft fixed to the roll support shaft. A brake device installed on the outer peripheral surface of the brake drum so as to be freely contacted and separated; a tension device for applying a predetermined tension to a sheet fed from the roll sheet; and an operation rod connecting the brake device and the tension device And a roll sheet supply device. 2. The brake device according to claim 1, further comprising: a brake roller fixed to the roll support shaft, the brake roller being in contact with and separating from an outer peripheral surface of the brake drum; The roll sheet feeding device according to claim 1, wherein a base end of the brake arm is pivotally supported at a predetermined position on the base. 3. The tension device, comprising: a tension roller around which a sheet unreeled from the roll sheet is wound; a tension arm having the tension roller rotatably attached to a leading end; Stretched in between,
3. The spring according to claim 1, further comprising a spring that applies a predetermined urging force to the tension arm, wherein a base end of the tension arm is pivotally supported at a predetermined position on the base. 4. Roll sheet feeder. 4. A roll sheet feeding apparatus for continuously feeding a sheet using a roll sheet obtained by winding a long sheet into a roll to various apparatuses for performing a predetermined process on the sheet, A bearing portion provided; a roll support shaft inserted into the center of the roll sheet and supported by the bearing portion, and a brake drum fixed to at least one end portion; and a roll support shaft fixed to the roll support shaft. A brake device installed on the outer peripheral surface of the brake drum so as to be freely contacted and separated; a tension device for applying a predetermined tension to a sheet fed from the roll sheet; and an operation rod connecting the brake device and the tension device A brake roller that comes into contact with and separates from the outer peripheral surface of the brake drum fixed to the roll support shaft; A brake arm to which a roller is rotatably mounted, and a base end of the brake arm is pivotally supported at a predetermined position on the base. A tension roller to be wound, a tension arm having the tension roller rotatably attached to a tip end thereof, and a spring stretched between the tension arm and the base to apply a predetermined urging force to the tension arm. A base end of the tension arm is pivotally supported at a predetermined position on the base, and the operation rod has one end locked to a shaft end of the brake roller attached to the brake arm. And the other end is locked at a predetermined position located on the opposite side of the tension roller from the fulcrum of the tension arm.
The roll sheet feeding device according to claim 1, wherein the brake roller is brought into contact with the brake drum to maintain a brake state by the spring that applies a predetermined urging force to the tension arm.