JP2000006084A - Cutting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cutting device capable of removing chips generated when a sheet is cut, with a simple structure. SOLUTION: A conveyance mechanism part 4 capable of conveying a roll of paper 3 in both forward and reverse directions is disposed so that chips generated when the roll of paper 3 is cut by a cutter 20 may drop freely by its gravity. As a result, the adhesion of chips to a cutting edge of the cutter 20 can be reduced and the cutting edge of the cutter can be prevented from degrading its cutting property. It is thus possible to prevent the performance of the cutting device from being degraded due to chips adhering to respective members of the cutting device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a cutting device, and more particularly, to a cutting device for cutting a sheet into a predetermined shape.

[0002]

2. Description of the Related Art Conventionally, there has been known a cutting apparatus for cutting a tack sheet or the like in which release paper is adhered to an adhesive sheet into a predetermined shape. As this kind of cutting device, for example, there is an apparatus provided with a conveying roller for conveying a sheet and a cutting mechanism for cutting the sheet conveyed by the conveying roller. This cutting mechanism is usually provided with a cutter for cutting a sheet, a cutter unit for selectively supporting the cutter at a half-cut position for cutting only the adhesive sheet, and a full-cut position for cutting the release paper together with the adhesive sheet. And a carriage on which the cutter unit is detachably mounted and which can be reciprocated in a direction (a sheet width direction) substantially orthogonal to a sheet conveying direction. And, for example, forward rotation and reverse rotation of the transport roller,
By reciprocating the carriage in the width direction of the sheet, a cutting operation is performed in which the sheet is half-cut into a predetermined shape and then the entire sheet is cut in the width direction of the sheet.

[0003]

However, when a sheet is cut by a cutter, chips such as paper dust are generated on the sheet. For example, the chips adhere to the cutting edge of the cutter and the sharpness of the cutter is reduced. The performance of the cutting device may be degraded due to chips attached to each member of the cutting device, for example, when the cutting device is deteriorated.

[0004] Such a cutting device is often used, for example, when cutting a portion on which a predetermined image is formed, and therefore, upstream of the cutting mechanism in transporting a sheet in the forward direction. It is desirable to equip the side with a printer head for forming images.

However, when such a printer head is provided in a cutting device, when a sheet is cut while being conveyed in the opposite direction, that is, toward the upstream side of the cutting mechanism, chips generated at the time of cutting adhere to the printer head. As a result, image formation failure may be caused.

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above problems, and has as its object to provide a cutting device capable of removing chips generated when a sheet is cut with a simple configuration. is there.

[0007]

In order to achieve the above object, the invention according to claim 1 comprises a conveying means capable of conveying a sheet in both forward and reverse directions, and a cutting means having a cutter for cutting the sheet. In the cutting apparatus provided, the conveying means is provided so that chips generated when the sheet is cut by the cutter fall by gravity.

By disposing the conveying means in this manner, chips generated at the time of cutting fall by gravity.

The invention described in claim 2 is the first invention.
In the invention described in (1), when the sheet is conveyed in the forward direction, an image forming unit for forming a predetermined image on the sheet is provided upstream of the cutting unit.

[0010] By providing the image forming means on the upstream side of the cutting means, after the image forming means forms a predetermined image on the sheet, the portion on which the image is formed is cut into a predetermined shape by the cutting means. Can be.

According to a third aspect of the present invention, the conveying means is arranged to convey the sheet in a substantially horizontal direction in a state where the cut surface of the sheet facing the cutter is directed downward. It is characterized by having.

When the conveying means is arranged in this manner, the chips generated at the time of cutting are directly dropped by gravity because the cut surface of the sheet is directed downward.

The invention described in claim 4 is the first invention.
Alternatively, in the invention described in Item 2, the transporting means is provided so as to transport the sheet in a substantially vertical direction.

If the conveying means is arranged so as to convey the sheet in a substantially vertical direction, the chips generated at the time of cutting fall along the conveying means by gravity.

The invention described in claim 5 is the first invention.
The invention according to any one of the above-described aspects, further comprising a powder removing member for contacting the conveyed sheet to drop chips from the sheet.

By providing such a powder removing member, the powder removing member comes into contact with the sheet, and chips attached to the sheet can be dropped from the sheet.

The invention described in claim 6 is the first invention.
The invention as set forth in any one of the first to fifth aspects, further comprises a receiving member for receiving chips falling by gravity.

By providing such a receiving member, chips falling by gravity can be received.

[0019]

FIG. 1 is a side view showing a cutting printer 1 as an embodiment of a cutting apparatus according to the present invention. FIGS. 2 and 3 are side sectional views of the cutting printer 1 shown in FIG. .

As shown in FIG. 1, FIG. 2 and FIG. 3, the cutting printer 1 includes a transport mechanism 4 as a transport means capable of transporting a roll paper 3 as a sheet in both forward and reverse directions within a casing 2. A cutting mechanism 6 for cutting the roll paper 3 and an image forming mechanism 1 as an image forming means for forming a predetermined image on the roll paper 3
2 are provided.

As shown in FIGS. 1 and 2, a casing 2 is a box-shaped casing body 1 having an open upper side.
3 to cover the upper opening of the casing body 13;
It consists of two covers 7 and 8. These two covers 7 and 8 are rotatably supported on both side ends on the upper side of the casing main body 13 via support shafts 9 and 10, and one cover 7 is provided with a cutting mechanism 6.
Covers approximately half of the casing body 13 on the side where
The other cover 8 is arranged so as to cover substantially half of the casing body 13 on the side where the roll paper 3 is arranged. Then, by turning the respective covers 7 and 8 upward, the upper side of the casing body 13 is opened (the state shown in FIG. 1), and by rotating downward, the casing body 13 is closed (FIG. 2). ).

The roll paper 13 is rotatably supported by a roll paper support member 11 at one end in the casing 2. In addition, the roll paper 3 is configured by a tack sheet in which release paper is stuck to an adhesive sheet.

The transport mechanism 4 is provided on the casing body 13 and has a transport roller 14 facing the upper opening of the casing body 13 and one of the covers 7. The cover 7 is provided on the upper opening of the casing body 13. In the state where the casing body 13 is covered (the state shown in FIG. 2),
The driven roller 15 which faces the opening on the upper side and faces the transport roller 14, and the cover 7
When the cover 7 covers the upper opening of the casing body 13 (the state shown in FIG. 2), the cover 7 faces the upper opening of the casing body 13 and faces the thermal head 28 described later. And a platen roller 16 which is also a component of the image forming mechanism unit 12. When the cover 7 is changed from the open state (the state shown in FIG. 1) to the closed state (the state shown in FIG. 2), the roll paper 3 is moved between the transport roller 14 and the driven roller 15, and The thermal head 28 is sandwiched between the platen roller 16 and the thermal head 28, and can be transported in a substantially horizontal direction. In this state, in the roll paper 3, the adhesive sheet is on the lower side and the release paper is on the upper side.
The transport roller 14 is configured to transmit a drive from a first drive motor (not shown), and the platen roller 16 is driven by a drive transmitted to the transport roller 14 via a gear train (not shown). Is further transmitted. Then, the forward and reverse rotation of the first drive motor rotates the transport roller 14 and the platen roller 16 in the forward and reverse directions, whereby the roll paper 3 is transported in the forward and reverse directions in a substantially horizontal direction. . The replacement of the roll paper 3 can be performed by opening and closing the other cover 8.

The cutting mechanism 6 includes one cover 7
When the cover 7 covers the upper opening of the casing main body 13 (the state shown in FIG. 2), the cutting bed 17 faces the upper opening of the casing main body 13 and receives the roll paper 3; A cutter unit 18 facing the upper opening of the main body 13 and facing the cutting bed 17 with the roll paper 3 interposed therebetween, and a carriage 1 on which the cutter unit 18 is detachably mounted.
9 is provided.

The cutter unit 18 is disposed below the roll paper 3 and has a cutter 20 at its upper end for cutting the roll paper 3. The cutter 20 cuts the roll paper 3 from below. It is configured to be able to. The cutter 20 is selectively supported by an elevating mechanism (not shown) in the cutter unit 18 at an entire cut position for cutting the release sheet together with the adhesive sheet and a half-cut position for cutting only the adhesive sheet.

The carriage 19 has an endless timing that is wound around a pair of pulleys (not shown) in a direction perpendicular to the forward and reverse transport directions of the roll paper 3 (hereinafter referred to as the width direction of the roll paper 3). It is connected to the belt. One of the pair of pulleys is driven by a second drive motor (not shown).
The carriage 19 is reciprocated in the width direction of the roll paper 3.

A main guide shaft 21, which is supported by the casing body 13 and extends in the width direction of the roll paper 3, slides on an end of the carriage 19 opposite to the end on which the cutter unit 18 is mounted. It is movably inserted. An auxiliary guide shaft 22 extending substantially in parallel with the main guide shaft 21 is slid on an intermediate portion between an end on the side where the cutter unit 18 is mounted and an end on the side where the main guide shaft 21 is inserted. It is movably inserted. Both ends of the auxiliary guide shaft 22 are connected to a rotating arm 24 rotatably supported by the casing body 13 via a pivot 23. An output shaft 27 of a solenoid 26 is connected to one of the rotating arms 24 via an operation link 25. When the solenoid 26 is in the ON state (excited state), as shown in FIG. 2, the cutter unit 18 is actuated by the urging force of a spring (not shown) so that the upper end thereof presses on the cutting portion bet 17, When the solenoid 26 is in the off state (non-excited state), as shown in FIG. 3, the output shaft 27 of the solenoid 26 advances, and the cutter unit 18 of the carriage 19 is moved via the operation link 25 and the auxiliary guide shaft 22. The end on the mounting side is rotated clockwise downward about the main guide shaft 21 so that the upper end of the cutter unit 18 is moved away from the cutting bed 17.

Further, the image forming mechanism section 12 includes the roll paper 3
In the transport in the forward direction, a line-type thermal head 28 as a printer head, which is disposed upstream of the cutting mechanism 6 and has a length substantially equal to the width of the roll paper 3, And a platen roller 16 facing the roll paper 3 therebetween. By providing the image forming mechanism 12 upstream of the cutting mechanism 6, the image forming mechanism 12 forms a predetermined image on the roll paper 3 by the image forming mechanism 12 as described later. Thereby, the portion where the image is formed can be cut into a predetermined shape.

Next, the operation of the thus-configured cutting printer 1 will be briefly described. First, the leading end of the roll paper 3 supported by the roll paper support member 11 is pulled out near the thermal head 28, and a power source (not shown) is turned on. The first drive motor (not shown) is driven to rotate forward by a command to start the operation of the CPU (not shown), and the roll paper 3 is rotated by the forward rotation of the transport roller 14, the driven roller 15 and the platen roller 16.
Is transported in the forward direction. The transported roll paper 3 enters between the thermal head 28 and the platen roller 16, and a heating element of the thermal head 28 is driven to form a predetermined image on the roll paper 13.

Then, the roll paper 13 on which the predetermined image has been formed enters the space between the cutting bed 17 and the cutter unit 18 and, for example, after the portion where the predetermined image has been formed is half-cut. The entire roll paper 3 is cut in the width direction.

At the time of half cutting, the solenoid 26 is turned on at the half cutting start position in a state where the cutter 20 is supported by a lifting mechanism (not shown) at the half cutting position where only the adhesive sheet is cut.
As a result, the cutter unit 18 comes into contact with the roll paper 3 from below. Then, the first drive motor is driven to rotate forward and backward, and the roll paper 3 is transported in the forward and reverse directions, so that the roll paper 3 is cut along the transport direction. Are driven forward and backward, and the carriage 19 is reciprocated in the width direction of the roll paper 3 so that the roll paper 3 is cut along the width direction. By performing the reverse rotation drive and the forward rotation drive and the reverse rotation drive of the second drive motor simultaneously and relatively, the roll paper 3 is half-cut into an arbitrary shape such as a rectangular shape or an arc shape. You.

Then, at the time of all cutting, the cutter 2
The solenoid 26 is turned on in a state where 0 is supported at all cutting positions by a lifting mechanism (not shown), the second drive motor is driven forward and reverse, and the carriage 19 reciprocates in the width direction of the roll paper 3. As a result, the entire roll paper 3 is cut along its width direction.

When the roll paper 3 is half-cut and full-cut by the cutter 20 in the thus-configured cutting printer 1 of the present embodiment, chips such as paper dust are generated. As shown in the side sectional view, the cut surface facing the cutter 20 of the roll paper 3 conveyed in a substantially horizontal direction is directed downward.
Then, since the cutter 20 provided at the upper end of the cutter unit 18 disposed below the roll paper 3 cuts the roll paper 3 from below, the chips generated at the time of cutting fall as they are by gravity. For this reason, it is possible to reduce the possibility that chips are left on the roll paper 3 and adhere to the cutting edge of the cutter 20 to reduce the sharpness, or to adhere to the thermal head 28 and cause poor image formation. The cutting chips are attached to the members of the cutting printer 1 by cutting chips.
Can be prevented from deteriorating. Moreover, in the present embodiment, the transport mechanism 4 and the cutting mechanism 6 are arranged in a specific manner, and the chips are dropped by gravity, so that a special configuration for removing the chips is not required. The removal of chips can be achieved simply, reliably and at low cost.

As shown in FIGS. 2, 3 and 4, in the cutting printer 1 of the present embodiment, the roll paper 3 conveyed between the cutting mechanism 6 and the image forming mechanism 12 A brush 29 is provided as a powder removing member for dropping chips from the roll paper 3 in contact therewith. The brush 29 includes a brush portion 30 and a brush support portion 31 that supports the brush portion 30. The brush support portion 31 is attached to the lower surface of the thermal head 28, and the brush portion 30 is connected to the cutter unit 18 and the thermal head. 28, it is arranged so as to contact the roll paper 3 from below. Such a brush 2
By providing 9, the brush portion 31 comes into contact with the roll paper 3, and chips attached to the roll paper 3 can be removed from the roll paper 3. Therefore, the chips can be dropped more efficiently, and the adhesion of the chips to the thermal head 28 can be further reduced. The position where the brush 29 is provided is not particularly limited, and may be provided on either the upstream side or the downstream side of the transport of the roll paper 3 with respect to the cutter unit 18 in the forward direction.
Further, a plurality of such devices may be provided on the upstream side and the downstream side.

FIG. 5 is a cross-sectional side view of a main part showing another embodiment of the present invention, that is, a mode in which the transport mechanism 4 is arranged to transport the roll paper 3 in a substantially vertical direction. It is. In FIG. 5, the same reference numerals as those shown in FIG. 4 denote the same components. As shown in FIG. 5, even if the transport mechanism 4 is arranged to transport the roll paper 3 in a substantially vertical direction, the chips generated at the time of cutting can be directly dropped along the transport mechanism 4 by gravity. Can be.

However, in the embodiment shown in FIG. 5, the chips fall down toward the downstream side of the cutter 20 and may adhere to the transport roller 14. Therefore, a receiving member 32 for receiving the chips is provided. That is, the receiving member 32 is
, And has one end facing between the cutter unit 18 and the transport roller 14 to contact the roll paper 3 and the other end to the transport roller 14.
By arranging the swarf below the swarf, the swarf is slopingly arranged to receive falling chips and to be able to remove them satisfactorily. This can prevent the chips from adhering to the members of the cutting device such as the transport roller 14 arranged in the direction in which the chips fall, and can collect the falling chips without being scattered. it can.

The receiving member 32 is transported in a substantially horizontal direction in the embodiment shown in FIGS. 1 to 4, ie, in a state where the cut surface of the roll paper 3 facing the cutter 20 is directed downward. May be provided in the embodiment to be performed. In this case, though not shown, it may be provided, for example, on the bottom wall of the casing body 13 facing the cutter unit 18.

Further, the present invention includes any embodiment in which the transport mechanism 4 is arranged so that chips are dropped by gravity, regardless of the embodiment shown in FIGS. For example, even in a state where the cut surface of the sheet facing the cutter is directed upward, if the chips are inclined to such an extent that the chips fall due to gravity, this aspect is also included.

[0039]

As described above, according to the first aspect of the present invention, the chips generated at the time of cutting fall due to gravity, so that the chips remain on the sheet and adhere to the cutting edge of the cutter. Thus, it is possible to prevent the cutting performance of the cutting device from being reduced due to the chips being attached to each member of the cutting device. Moreover, since the chip is dropped by gravity with a specific arrangement of the transport means, no special structure for removing the chip is required, and the chip can be easily and inexpensively reduced in cost. Can be achieved.

According to the second aspect of the present invention, by providing the image forming means upstream of the cutting means, a predetermined image is formed on the sheet, and the portion on which the image is formed is cut into a predetermined shape. be able to. Further, even if the image forming means is provided on the upstream side of the cutting means, since the conveying means is arranged to drop the chips by gravity, chips generated at the time of cutting adhere to the image forming means, There is little risk of inferior image formation.

According to the third aspect of the present invention, since the cut surface of the sheet is directed downward, chips generated at the time of cutting fall as they are by gravity. for that reason,
With a simple configuration, chips can be reliably dropped.

According to the fourth aspect of the present invention, since the conveying means is arranged to convey the sheet in a substantially vertical direction, the chips generated at the time of cutting fall along the conveying means by gravity. Therefore, chips can be reliably dropped with a simple configuration.

According to the fifth aspect of the present invention, since the dust removing member comes into contact with the sheet and the chips attached to the sheet can be dropped from the sheet, the chips can be removed more efficiently. Can be dropped.

According to the sixth aspect of the present invention, since the chip falling by gravity can be received by the receiving member, the chip is provided to each member of the cutting device arranged in the direction in which the chip falls. Can be prevented from adhering, and falling chips can be collected without being scattered.

[Brief description of the drawings]

FIG. 1 is a side view showing a cutting printer as one embodiment of a cutting device of the present invention.

FIG. 2 is a side sectional view of the cutting printer shown in FIG.

FIG. 3 is a side sectional view of the cutting printer shown in FIG. 1;

FIG. 4 is a sectional side view of a main part of the cutting printer shown in FIG. 1;

FIG. 5 is a sectional side view of a main part corresponding to FIG. 4, showing an embodiment different from the cutting printer shown in FIG. 1;

[Description of Reference Numerals] 1 cutting printer 3 roll paper 4 transport mechanism 12 image forming mechanism 18 cutter unit 20 cutter 29 brush 32 receiving member

Claims (6)

[Claims] 1. A cutting apparatus comprising: a conveying unit capable of conveying a sheet in both forward and reverse directions; and a cutting unit having a cutter for cutting the sheet, wherein the conveying unit is configured to cut the sheet when the sheet is cut by the cutter. A cutting device, wherein debris is arranged to fall by gravity. 2. The image forming apparatus according to claim 1, further comprising an image forming unit for forming a predetermined image on the sheet, upstream of the cutting unit when the sheet is transported in the forward direction. Cutting equipment. 3. The apparatus according to claim 2, wherein the conveying unit is arranged to convey the sheet in a substantially horizontal direction when a cut surface of the sheet facing the cutter faces downward. Item 3. The cutting device according to item 1 or 2. 4. The cutting apparatus according to claim 1, wherein the conveying unit is arranged to convey the sheet in a substantially vertical direction. 5. The cutting apparatus according to claim 1, further comprising a powder removing member for contacting the conveyed sheet to drop chips from the sheet. . 6. The cutting device according to claim 1, further comprising a receiving member for receiving chips falling by gravity.