JP2003136473A - Cutter and printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a movable cutter from being locked in the cutting operation by variations in manufacture or the like. SOLUTION: In this cutter 11 for cutting a long sheet of paper by inserting the movable cutter 15 into a slit 28 formed in a supporting base 14, at least one supporting base of a first supporting base 29 and a second supporting base 30 forming the slit 28 is provided movably in the direction widening the slit 28 and is elastically held by a elastic member 31 so as to return to the slit position forming the slit 28.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting device for cutting paper and a printer equipped with the cutting device.

[0002]

2. Description of the Related Art Generally, a printer such as a kitchen printer that uses a long sheet of paper includes a cutting device 100 for cutting the paper into a predetermined length. The cutting device 100
FIG. 5 shows a conventional example of the above.

In the conventional cutting device 100 shown in FIG. 5, a movable blade portion 102 having a movable blade 101 and a support base 103 are arranged to face each other with a paper insertion space 104 interposed therebetween. The support base 103 is composed of first and second support bases 106 and 107 that are fixedly provided with a slit 105 through which the movable blade 101 that is driven by a drive mechanism (not shown) can move in and out. These first and second support bases 10
First and second sheet supporting surfaces 106a and 107a that support the back surface of the sheet 108 when the sheet is cut are formed along the sheet inserting space 104 on the sheet inserting space 104 side of the sheets 6 and 107, respectively.

The structure having such a structure has a sheet insertion space 1
Paper support surface 106a, 1 of the support table 103
The sheet 108 on the sheet 07a is cut by inserting the movable blade 101 into the slit 105 while pressing the sheet 108 on the sheet supporting surfaces 106a and 107a by the movable blade 101 driven by the driving mechanism.

The movable blade portion 102 and the support base 103 as described above.
When used in a printer or the like, the separation-type cutting device 100 in which the and is separated from each other is, for example, a main body of a casing structure having an upper surface opening for accommodating a long sheet 108 wound in a roll shape. The support base 103 is fixedly attached to a case (not shown), and the movable blade 102 is fixedly attached to a main body cover (not shown) that opens and closes the opening surface of the main body case. In this case, when the main body cover is opened, the space between the movable blade portion 102 and the support base 103 is widened, and the paper insertion space 104 is opened, so that the paper 108 is opened.
It is extremely easy to grasp the tip of the sheet and pull it out into the sheet insertion space 104. After that, when the main body cover is rotated to close the upper surface opening of the main body case, the paper 108 is inserted between the movable blade portion 102 and the support base 103.

[0006]

However, since the movable blade portion 102 and the support base 103 are supported by the main body case and the main body cover which are displaced relative to each other, when the main body cover is closed, assembling, etc. Due to manufacturing variations, the relative positional relationship between the movable blade portion 102 and the support base 103 may be displaced. As a result, as shown in FIG. 6, the movable blade 101 causes the slit 1 to move in the cutting operation.
There is a problem in that it is inserted into 05 at an angle, is sandwiched between the first and second support bases 106 and 107, and is not returned and locked. This problem is the movable blade 1
If 02 and the support base 103 are separated, even if they are both installed in the main body case or the like, this is a problem caused by manufacturing variations.

An object of the present invention is to prevent the movable blade from being locked during a cutting operation due to manufacturing variations or the like.

[0008]

According to the present invention, in a cutting device for cutting a long sheet of paper on a supporting base by inserting a movable blade into a slit formed in the supporting base, the slit is The support base is formed of first and second support bases, the first support base faces one surface of the movable blade inserted into the slit, and the second support base is At least one of the first and second support bases, which faces the other surface of the movable blade inserted into the slit, is movably provided in a direction in which the slit is widened to a slit forming position where the slit is formed. It is elastically held by an elastic member so as to return.

Therefore, for example, when the movable blade obliquely inserted into the slit hits the first and second supporting bases in the cutting operation due to manufacturing variations and the like, the first and second supporting bases. The support base elastically held by the elastic member moves out of the movable blade in response to being pushed by the movable blade. This maintains the movable blade in a movable state. After that, when the movable blade returns and the support is no longer pushed from the movable blade, the support returns to the slit forming position.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described with reference to FIGS. The cutting device according to the present embodiment is an example of application to a cutting device used in a kitchen printer as a printer. 1 is a vertical sectional side view showing the structure of the kitchen printer according to the present embodiment, FIG. 2 is a vertical sectional side view showing the structure of a cutting device, FIG. 3 is an exploded perspective view showing the structure of the cutting device, and FIG. It is a vertical side view which shows the state inserted diagonally into the slit.

As shown in FIG. 1, a kitchen printer 1
Is a main body case 2 and a main body case 2 having a housing structure with an upper opening.
And a body cover 3 that opens and closes the opening surface of the. The body cover 3 is openable and closable around the support shaft 4 with respect to the body case 2. The body case 2 is provided with a platen 5 having a roller structure and an arc-shaped sheet storage section 6, and the sheet storage section 6 stores and holds a long sheet 7 wound in a roll shape. . On the other hand, on the body cover 3 side, the platen 5
A thermal head 9 that is in contact with and is included in the printing unit 8 is provided. As a result, when the main body cover 3 is closed, a paper transport path 10 is formed from the paper storage section 6 to the print section 8 and to the paper discharge side, and the thermal head 9 is connected to the platen 5 via the paper transport path 10. It is configured so that it can be brought into contact with a predetermined pressing force.
The platen 5 also functions as a paper transport unit that transports the paper 7 in the transport direction A.

A cutting device 11 is provided downstream of the printing section 8 in the paper transport path 10 in the paper transport direction. The cutting device 11 has a divided structure in which a movable blade portion 13 and a support base 14 are provided so as to face each other with a paper insertion space 12 interposed therebetween. The movable blade portion 13 is attached to the main body cover 3 side, and the support base 14 is attached to the main body case 2 side. The sheet insertion space 12 is connected to the sheet conveyance path 10, and the sheet 7 conveyed through the sheet conveyance path 10 passes therethrough.

As shown in FIGS. 2 and 3, the movable blade portion 13
A movable blade 15 having a saw-toothed cutting edge is slidably attached to one surface 16a of the blade attachment plate 16 in the vertical direction. Specifically, one side 15 of this movable blade 15
A slider 17 formed so as to project at a is slidably penetrated vertically in a guide hole 16b formed in the blade mounting plate 16. Then, the slider 17 of the movable blade 15
Vertical guide holes 15b formed on both sides of the blades are fitted into guide pins 18 attached to both sides of the blade mounting plate 16. With these, the movable blade 15 is supported so as to slide in the vertical direction with respect to the blade mounting plate 16. Furthermore, a cover 19 that covers the movable blade 15 is attached to the blade attachment plate 16 of the movable blade portion 13.

As shown in FIG. 3, in this cutting device 11, an L-shaped first arm in which an engaging portion 20a and a laterally elongated engaging hole 20b are formed on one end side and the other end side, respectively. 20 is supported by a support shaft 21 so as to be vertically rotatable. The connecting pin 17a formed on the slider 17 of the movable blade 15 and protruding from the guide hole 16b of the blade mounting plate 16 is engaged with the engagement hole 20b of the first arm 20 so that it can be finely moved.

Further, in the cutting device 11, the engaging portion 22
a and an L-shaped second arm 22 in which a laterally elongated engagement hole 22b is formed on one end side and the other end side, respectively.
3 is rotatably supported in the horizontal direction, and the engaging portion 22a of the second arm 22 is engaged with the engaging portion 20a of the first arm 20 so as to be finely movable.

In the cutting device 11, a crank gear 26 is connected to the drive motor 24 via a gear train 25, and a crank pin 26a formed in the crank gear 26 is engaged with an engaging hole of the second arm 22. 22b is engaged. By doing so, in the cutting device 11,
The first and second arms 20 and 22, the crank gear 26, and the like as described above constitute the drive mechanism 27 that reciprocally drives the movable blade 15 in the vertical direction to move it from the initial position to the cutting position where it is inserted into the slit 28. Has been done.

As shown in FIGS. 2 and 3, the support base 14
Is composed of first and second support bases 29 and 30 which are arranged so as to face each other so as to form a slit 28 through which the movable blade 15 which is driven and moves can enter and exit. The first support base 29 has one surface 1 of the movable blade 15 inserted in the slit 28.
The second support base 30 is provided so as to face 5a.
It is provided so as to face the other surface 15c of the movable blade 15 inserted into the slit 28. The facing interval between the first and second support bases 29 and 30 is set to be wider than the plate thickness of the movable blade 15. Here, the positions of the first and second support bases 29 and 30 at this time are the slit formation positions. Then, these first and second support bases 2
First and second sheet support surfaces 29 that support the back surface of the sheet 7 when cutting the sheet are provided on the sheet insertion space 12 side of the sheets 9 and 30.
A and 30a are formed along the paper insertion space 12, respectively.

The first support 29 is fixedly attached to the main body case 2. One surface 29 b of the first support base 29 on the slit 28 side is one surface 16 of the blade mounting plate 16.
It is formed on the same plane with respect to a, and the movable blade 15 is slidable. Further, contact portions 29c with which the second support base 30 abuts are formed on both sides of the one surface 29b of the first support base 29, respectively.

The second support base 30 is placed on the bottom of the main body case 2, and one surface 30b of the second support base 30 on the slit 28 side is in contact with the contact portion 29c of the support base 29. It is provided in the state of being. The second support base 30 is provided so as to be movable in the direction in which the slit 28 is widened.
The second support base 30 is elastically held by the coil spring 31 that is an elastic member so as to return to the slit formation position when the second support base 30 is moved in the direction in which the slit 28 is widened. Specifically, this coil spring 31 is
One end is supported by the support base 30, and the other end is supported by the main body case 2 to be provided in a balanced state.

In addition, the kitchen printer 1 has a control unit (not shown) for driving and controlling each unit of the kitchen printer 1.
Is provided. This control unit is provided with an information communication unit (not shown) that performs information communication with a handy terminal (not shown), and the control unit outputs the information received from the information communication unit from the handy terminal or the like. According to the information (printing information regarding printing), each unit is driven and controlled to execute the printing operation.

In such a structure, the sheet 7 stored and held in the sheet storage section 6 is conveyed by the platen 5 in the sheet conveying path 10 in the conveying direction A while being conveyed by the thermal head 9. Predetermined print contents such as a cooking menu are sequentially printed based on print information from a handy terminal or the like. When printing is completed, the first
The sheet 7 on the first and second sheet support surfaces 29a, 30a of the second support bases 29, 30 is driven by the cutting device 11 to move from the initial position to the cutting position.
The sheet is cut by the movable blade 15 inserted into the slit 28 while being pressed by the first and second sheet supporting surfaces 29a and 30a. Then, the cut sheet 7 is issued. After that, the movable blade 15 is driven to return from the cutting position to the initial position.

Here, if the closing position of the body cover 3 with respect to the body case 2 fluctuates due to manufacturing variations such as mounting, the movable blade 15 is slantedly inserted into the slit 28 as shown in FIG. It is conceivable that the blade 15 hits the first and second support bases 29 and 30, but in this case, the second support base 30 elastically held by the coil spring 31 is pressed against the movable blade 15. Since the movable blade 15 moves according to the movement and escapes from the movable blade 15, the movable blade 15 is maintained in a movable state. After that, movable blade 1
When the second support base 30 is not pushed from the movable blade 15 by returning the cutting support 5 from the cutting position to the initial position, the second support base 30 returns to the slit forming position. This prevents the movable blade 15 from being locked by being sandwiched between the first and second support bases 29 and 30.

Further, according to the present embodiment, by opening the main body cover 3 with respect to the main body case 2, the paper 7 can be replenished to the paper storage portion 6 while the wide open space is secured. it can. Further, by pulling the leading end of the paper 7 from the paper storage portion 6 to the cutting device 11 side in this wide space and closing the main body cover 3 around the support shaft 4, the paper 7
Can be easily inserted into the paper insertion space 12.

In the present embodiment, the second support base 30 of the first and second support bases 29 and 30 is the slit 2.
Although an example in which the coil spring 31 is elastically held by the coil spring 31 that is an elastic member so as to return to the slit forming position, the first and second support bases 29, It suffices if at least one of the members 30 is movably provided in the direction in which the slit 28 is widened and is elastically held by an elastic member so as to return to the slit forming position. Although not shown, when the first support base 29 is movably provided in the direction in which the slit 28 is widened and elastically held by the elastic member so as to return to the slit forming position, for example, the first support base 29 may be used. The main body case 2 is provided with a positioning portion that positions the first support base 29 at the slit forming position by being brought into contact with one surface 29b of the main body case
Etc. may be provided.

In this embodiment, the movable blade portion 13 having the movable blade 15 is provided on the main body cover 3 and the support base 14 is provided on the main body case 2, but the movable blade portion 13 is provided on the main body case. 2 and the support base 14 may be provided on the main body cover 3.

Further, although the coil spring 31 is described as an example of the elastic member in the present embodiment, the elastic member is not limited to this.

Further, in this embodiment, the first support base 2
The movable blade 15 has one surface 29 b so that the one surface 29 b of the movable blade 15 is flush with the one surface 16 a of the blade mounting plate 16.
Although the example of sliding on 9b has been described, this is a structure for improving sharpness, and in the implementation, one surface 29b of the first support base 29 is set to one surface 16a of the blade mounting plate 16. Need not be on the same plane.

Further, in the present embodiment, the application example to the kitchen printer 1 is shown as a printer, but the present invention is not limited to this, and may be applied to, for example, a receipt printer or a label printer.

As described above, according to the present embodiment, the paper transport path 10, the platen 5 which is a paper transport unit provided in the paper transport path 10 and transporting the paper 7,
A printing unit 8 that performs a printing operation on the paper 7 transported by the platen 5 and a cutting device 11 that is provided in the paper transport path 10 downstream of the printing unit 8 in the paper transport direction and that cuts the paper 7 are provided. As a result, it is possible to obtain the kitchen printer 1 which is a printer capable of preventing the movable blade 15 from being locked during the cutting operation due to manufacturing variations or the like.

Further, according to the present embodiment, the kitchen printer 1 has the main body case 2 and the main body cover 3 which is openably and closably provided with respect to the main body case 2, and the movable blade 1
One of the movable blade 15 and the support base 14 is provided on the main body cover 3, and the other of the movable blade 15 and the support base 14 is provided on the main body case 2. The sheet 7 can be easily inserted between the movable blade 1 and the movable blade 1 in the cutting operation due to manufacturing variations and the like.
Kitchen printer 1 that can prevent the lock of 5
Can be obtained.

[0031]

According to the present invention, it is possible to prevent the movable blade from being locked during the cutting operation due to manufacturing variations or the like.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view showing a structure of a kitchen printer according to an embodiment of the present invention.

FIG. 2 is a vertical sectional side view showing the structure of a cutting device.

FIG. 3 is an exploded perspective view showing the structure of a cutting device.

FIG. 4 is a vertical sectional side view showing a state in which a movable blade is obliquely inserted into a slit.

FIG. 5 is a perspective view showing the structure of a conventional cutting device.

FIG. 6 is a vertical sectional side view showing a state in which a movable blade is obliquely inserted into a slit.

[Explanation of symbols]

1 ... Printer (kitchen printer), 2 ... Main body case,
3 ... Main body cover, 5 ... Paper transport unit (platen), 7 ... Paper, 8 ... Printing unit, 10 ... Paper transport path, 11 ... Cutting device, 14 ... Support base, 15 ... Movable blade, 15a ... One surface, 15
c ... other surface, 28 ... slit, 29 ... first support base, 30
... second support base 31, 31 ... elastic member (coil spring)

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Koichi Yamada             570, Ohito, Ohito-cho, Takata-gun, Shizuoka             Kook Co., Ltd. Ohito Office F-term (reference) 2C058 AB05 AC06 AC12 AD01 AE04                       AE10 AF51 LA03 LA10 LA24                       LB09 LB17 LB27 LB36                 3C027 JJ01

Claims (3)

[Claims] 1. A cutting device for cutting a long sheet of paper on a support by inserting a movable blade into a slit formed in the support, wherein the slit is a first part of the support. And a second support base, the first support base faces one surface of the movable blade inserted into the slit, and the second support base
Of the movable blade inserted into the slit faces the other surface of the movable blade, and at least one of the first and second supporting bases is provided so as to be movable in a direction of expanding the slit. A cutting device, which is elastically held by an elastic member so as to return to a slit forming position to be formed. 2. A paper carrying path, a paper carrying section provided in the paper carrying path for carrying the paper, a printing section for performing a printing operation on the paper carried by the paper carrying section, and the paper. The printer according to claim 1, wherein the printer is provided on the downstream side of the printing unit in the sheet transport direction in the transport path and cuts the sheet. 3. The printer has a main body case and a main body cover that is openable and closable with respect to the main body case, and one of the movable blade and the support base is provided on the main body cover. The printer according to claim 2, wherein the other one of the movable blade and the support base is provided in the main body case.