JP2001287866A - Cutter device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the tip of a roll paper advanced into a sheet passage provided on a cutter device from advancing into a cutting blade setting space. SOLUTION: An inlet space 126 continued from the sheet passage 114 to the cutting blade setting space 107 where a fixed blade 109 and a movable blade 110 are located is openably and closably covered with a cover 1, and the operation of the cover 1 is interlocked with the operation of the movable blade 110 so that the inlet space 126 is closed in the pre-advance position of the movable blade 110 to the sheet passage 114, and opened in the after-advance position of the movable blade 110 to the sheet passage 114. Accordingly, when the roll paper after printing is advanced to the sheet passage 114, the inlet space 126 is closed by the cover 1 to prevent the advance of the tip of the roll paper to the inlet space 126.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutter device for printing predetermined items on roll paper, for example, for use in a receipt printer or the like to cut the printed roll paper to a predetermined length.

[0002]

2. Description of the Related Art As a conventional example of a cutter device used for a receipt printer or the like for cutting a roll paper after printing to a predetermined length, a cutter device as illustrated in FIGS. 3 to 5 is known. I have.

FIG. 3 is a vertical sectional side view schematically showing an example of a receipt printer including a conventional cutter device. The receipt printer uses the roll paper 101, guides the roll paper 101 to a predetermined paper path 102, and
03, a predetermined item is printed on the roll paper 101,
The roll paper 101 after printing by the cutter device 104
Is cut and is issued as a single vote. Here, the printing unit 103 includes a platen 105 disposed along the paper path 102 and a print head 106 such as a line thermal head disposed opposite to the platen 105 via the paper path 102. Have been.

FIG. 4 is an exploded perspective view of the cutter device 104. The cutter device 104 includes a fixed blade 109 on a pair of cutter frames 108a and 108b opposed to each other via a predetermined cut blade installation space 107 (see FIG. 3).
And a blade portion 111 composed of a movable blade 110 and a driving mechanism 112 of the movable blade 110 described later with reference to FIG. A sheet path for passing the roll paper 101 guided and conveyed in the paper path 102 by conveyance rollers 113 located on the downstream side of the paper path 102 with respect to the printing unit 103 is provided in such a cutter device 104. 114. The paper path 114 passes from one cutter frame 108a located below (the printing unit 103 side) to the other cutter frame 108b located above (a cut sheet issuing port side) via the cutting blade installation space 107. ing. The fixed blade 109 in the blade portion 111 is fixedly attached to one of the cutter frames 108a located below so as to be located in the cut blade installation space 107, extends to the paper path 114, and It is arranged along the passage 114 (see FIGS. 4 and 5). The blade 1
11 is the movable blade 110 in the cut blade installation space 1.
07, it is rotatably attached to the support shaft 12 at one of the cutter frames 108a located below. Such a movable blade 110 is retracted from the paper path 114 at its initial position, and
The cutter frame 1 is rotated by rotating about
08a, slides on the paper path 114, and finally meshes with the fixed blade 109 like scissors.

FIG. 5 is an exploded perspective view of a driving mechanism 112 provided in the cutter device 104. An initial position (a retract position) is provided on one of the cutter frames 108a located below.
And the insertion hole 11 corresponding to the rear end movable range of the movable blade 110 that slides between the movable blade 110 and a position meshing with the fixed blade 109.
The movable blade 11 corresponding to the insertion hole 115 is formed.
A groove 116 is formed at the rear end position of the zero. A cam having a driving piece 117 that is inserted into the insertion hole 115 to engage with the concave groove 116 and rotate to drive the movable blade 110 is rotatably provided. The cam having the driving piece 117 is supported by a shaft 118 which is parallel to the cutter frame 108 and is oriented in a direction orthogonal to the paper path 114. Further, a plate cam 120 fixed to a cam shaft 119 arranged in the same direction as the shaft 118 is provided, and the driving piece 117 operates as a follower having the plate cam 120 as a prime mover. The cam shaft 119 is urged in one direction by a coil spring 121 bridged between the cam shaft 119 and one of the cutter frames 108.
The cam shaft 119 is rotationally driven by this biasing force, and the plate cam 120 is rotated, so that the driving piece 117 is rotated. In response, the movable blade 110 is rotationally driven so as to mesh with the fixed blade 109. Is set.

Here, the urging force of the coil spring 121 is applied to the cam shaft 119 only when necessary, that is, when the cutter device 104 is operated, in the driving mechanism 112 provided in the cutter device 104. Trigger mechanism 122 is provided. The trigger mechanism 122 has a structure in which the rotation of a trigger gear 123 fixed to one end of the camshaft 119 is restricted by a trigger piece 125 movable in accordance with a driving state of a solenoid 124. That is, when the solenoid 124 is off, the trigger piece 125 is biased by a biasing member such as a leaf spring (not shown) in a direction to latch the trigger gear 123 and prevent its rotation. When 124 is turned on, the trigger piece 123 is unlatched by the trigger piece 125,
Thus, the camshaft 119 is configured to be rotationally driven by the urging force of the coil spring 121.

Although not shown, the cutter device 10
4 includes the driving mechanism 112, the fixed blade 109
As means for returning the movable blade 110 to the initial position after meshing with the camshaft, the camshaft 119 is rotationally driven in a reverse direction by a drive source such as a motor.

In such a configuration, when the printing unit 103 prints a receipt of one transaction on the roll paper 101 by the printing unit 103, the control unit (not shown) controls the roll paper 101 according to, for example, a receipt cut command. After transporting to the cutting position, the cutter device 104
Cuts the roll paper 101.

More specifically, after the roll paper 101 inserted from the paper path 102 through the paper path 114 is conveyed to the cutting position, the solenoid 124 is energized to drive the solenoid 124. Thus, the trigger piece 123 is unlatched by the trigger piece 125, and the coil spring 1 is released.
The camshaft 119 is rotationally driven by the urging force of 21.
Then, the plate cam 120 rotates counterclockwise from the state illustrated in FIG. 5, and accordingly, the driving piece 117 rotates clockwise in FIG. 5, thereby fixing the movable blade 110 from the initial position. It rotates in the direction in which it engages with the blade 109. In this way, the movable blade 110 enters the paper path 114 and the fixed blade 1
In the process, the roll paper 101 inserted through the paper path 114 is cut.

[0010]

The cutter device 104 illustrated in FIGS. 3 to 5 has a structure in which the roll paper 101 is cut at a predetermined position. Therefore, it is assumed that the roll paper 101 is used. As shown in FIG. 3, the roll paper 101 is wound and held in a roll shape, so that the roll paper 101 inevitably has a curl. Therefore, in the paper path 102 and the paper path 114, the roll paper 1
It is necessary to regulate the traveling direction of the roll paper 101 so that the leading end of the roll paper 101 does not deviate from the respective paths.

However, in the paper path 114, due to its structure, the leading end of the roll paper 101 curled by the curl of the roll paper 101 is moved from the entrance space 126 (see FIG. 3) to the cut blade installation space 107 (see FIG. 3). 107. Thus, the leading end of the roll paper 101 is positioned at the entrance space 1.
If it enters the cutting blade installation space 107 from 26, not only is it impossible to issue a proper receipt issuing operation,
Problems such as paper jam may occur.

In particular, the floating of the movable blade 110 is suppressed by, for example, a leaf spring 127 for the purpose of maintaining sharpness due to engagement with the fixed blade 109. However, when such a structure is adopted, a structure such as the leaf spring 127 (FIGS. 4 and 5) is used.
) Is located above the movable blade 110, and a gap is created between one movable blade 110 and the cutter frame 108b by the installation space. In this case,
As illustrated in FIG. 3, the leading end of the roll paper 101 easily enters the gap.

[0013] However, from the paper passage 114 to the entrance space 1
The direction in which the leading end of the roll paper 101 enters the cut blade installation space 107 via 26 depends on the curl of the roll paper 101. That is, the roll paper 101 tries to advance in the direction in which the leading end of the roll paper 101 is curled.
1 tries to enter the cutting blade installation space 107 from the entrance space 126 located in that direction. Therefore, in the case where the outer roll paper is used as the roll paper 101 instead of the inner roll paper as illustrated in FIG. 3, if the cutter device 104 in FIG. 3 is taken as an example, the leading end of the roll paper 101 is An attempt is made to enter the cut blade installation space 107 on which the fixed blade 109 is disposed.

Further, the leading end of the roll paper 101 is not limited to the position between the movable blade 110 or the fixed blade 109 and one of the cutter frames 108b located above, and the other is located between the movable blade 110 and the other cutter frame 108 located below. 108a.

SUMMARY OF THE INVENTION It is an object of the present invention to prevent a leading end of a roll paper entering a paper path provided in a cutter device from entering a cutting blade installation space.

An object of the present invention is to prevent the structure and mechanism of the device from becoming complicated.

An object of the present invention is to prevent a paper jam from occurring in a cutter device.

An object of the present invention is not to hinder proper printing and printing of paper.

[0019]

According to a first aspect of the present invention, there is provided a cutter apparatus comprising: a pair of cutter frames opposed to each other via a predetermined cutting blade installation space; and a pair of the cutter frames and the cutting blade installation space. A paper path formed to pass through the roll paper after printing, a fixed blade disposed along the paper path in the cut blade installation space, and a paper path in the cut blade installation space via the paper path. A movable blade that is swingably mounted so as to mesh with the fixed blade, a drive mechanism for operating the movable blade, and the paper passage to the cut blade installation space where the fixed blade or the movable blade is located. A cover for freely opening and closing the continuous entrance space,
At the position before the movable blade enters the paper path, the entrance space is closed, and at the position after the movable blade enters the paper path, the entrance space is opened. An interlocking mechanism for interlocking the operation of the cover.

Therefore, the leading end of the roll paper after printing, which has entered the paper path, tends to advance in the curling direction due to its curl, whereby the cutting blade is installed from the entrance space located in the advance direction. Try to get into space. On the other hand, when the roll paper after printing enters the paper passage, the movable blade remains at the initial position, so the entrance space is closed by the cover, preventing the leading edge of the roll paper from entering the entrance space. Is done. Then, by the interlocking mechanism, the cover turns in conjunction with the turning operation of the movable blade that advances in the direction of the fixed blade, and the entrance space is opened. This prevents the cover from interfering with the rotating movable blade.

Here, in the first aspect of the present invention, the roll paper tends to enter due to its curl in an entrance space which continues from the paper passage to the cut blade installation space where the fixed blade or the movable blade is located. This is effective when the space is the entrance space (claim 2). That is, in such a case, the cover prevents the leading end of the roll paper from entering the cut blade installation space from the entrance space, and prevents the roll paper from entering the cut blade installation space.

According to a third aspect of the present invention, in the cutter device according to the first or second aspect, the cover is formed with a guide surface that guides a leading end of the roll paper that has entered the paper path in a discharge direction. . Accordingly, the leading end of the roll paper is guided by the guide surface, and the leading end of the roll paper into the entrance space is reliably prevented.

The invention according to claim 4 is the invention according to claims 1 to 3
In the cutter device according to any one of the above, the interlocking mechanism includes a biasing unit that biases the cover in a direction to close the entrance space. Therefore, since the cover is urged in the direction to close the entrance space by the urging means, when the cover is opened and closed, only when the cover is opened, the rotating operation of the movable blade is performed by the rotating operation of the movable blade. Should be linked. For example, as in the invention as set forth in claim 5, the movable blade may be configured to simply rotate the cover in a direction to open the entrance space in accordance with the operation of entering the paper path, and the structure is simplified. Become

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. 1 and 2, and if necessary, FIGS. 3 to 5. FIG. FIG. 1 is an exploded perspective view of the cutter device, and FIG. 2 is a vertical sectional side view of the cutter device. The same parts as those described with reference to FIGS. 3 to 5 are denoted by the same reference numerals, and description thereof will be omitted.

As an outline of the present embodiment, a cover 1 that covers the entrance space 126 on the side where the movable blade 110 is housed is openably and closably provided on the cutter frame 108a located below. When the cover 1 is rotated by the movable blade 110, the entrance space 126 is moved.
There is provided an interlocking mechanism 2 that opens and closes. That is, the cover 1 opens and closes the entrance space 126 connected from the paper path 114 to the cut blade installation space 107 where the movable blade 110 is located. The interlocking mechanism 2 closes the entrance space 126 at a position before the movable blade 110 enters the paper path 114, and opens the entrance space 126 at a position after the movable blade 110 enters the paper path 114. In addition, the drive mechanism 112
The operation of the cover 1 is linked to the operation of the movable blade 110 due to. Hereinafter, the structure and operation will be described in detail.

First, the cutter frame 108a located below is adjacent to the paper passage hole 3 for forming the paper passage 114, and the paper passage hole 3 and the paper width direction are the same. Cover hole 4 wide in the orthogonal direction
Are formed. A pair of cover mounting pieces 5 which are bent at right angles are provided on both side edges of the cover hole 4 in the paper width direction. These cover mounting pieces 5
Also, on both sides of the cover 1 attached to the cover 1, attachment pieces 6 corresponding to the cover attachment pieces 5 are formed by bending. A pair of cover shaft holes 7a and 7b are formed in the pair of cover mounting pieces 5 on the cutter frame 108a side and the pair of mounting pieces 6 on the cover 1 side, respectively. A cover shaft 8 penetrates through 7a and 7b. Here, the cutter frame 10
The cover shaft hole 7a formed in the cover mounting piece 5 on the side of 8a is formed to have a slightly smaller diameter than the cover shaft 8, whereby the cover shaft 8 is pressed into the cover shaft hole 7a. It has been done. In contrast,
A cover shaft hole 7b formed in the mounting piece 6 on the cover 1 side
Is formed to have a slightly larger diameter than the cover shaft 8, whereby the cover 1 is attached so as to be rotatable around the cover shaft 8.

Next, a coil spring 9 as an urging means for urging the cover is provided around the one end of the cover shaft 8 so as to be wound therearound. The other end of the coil spring 9 is inserted and fixed in the small hole 6a formed in the one mounting piece 6 on the cover 1 side. The other end of the coil spring 9 is inserted and fixed in the small hole 5a formed on the one cover mounting piece 5 on the cutter frame 108a side. Have been. As a result, the cover 1 is urged by the restoring force of the coil spring 9, and the cover 1 penetrates through the paper passage hole 3 for forming the paper passage 114 provided in one of the cutter frames 108a. However, it is still urged to rotate upward. Such a biasing structure of the cover 1 by the coil spring 9 constitutes a part of the interlocking mechanism 2.

Here, the cover 1 is connected to the entrance space 1.
An arc-shaped guide piece 10 is provided at a portion that functions to openably and closably cover 26, and the surface of the guide piece 10, that is, the surface facing the roll paper 101 in the paper path 114 is the guide surface 11. ing. The guide surface 11 functions as a surface that guides the leading end of the roll paper 101 in a direction to exit the paper path 114. As a configuration for this purpose, in the present embodiment, in a state where the cover 1 closes the entrance space 126, the leading end of the guide piece 10 is closed by the paper passage 114 formed in the cutter frame 108 b located above. It has a configuration to contact the wall. The guide piece 10 of the cover 1 is configured to move on the circumference of the same radius in accordance with the rotation of the cover 1, and in the portion of the paper path 102 communicating with the paper path 114, The leading end of the side wall that forms the paper path 102 has a leading end shape that follows the movement locus of the guide piece 10. This prevents formation of a gap between the paper path 102 and the paper path 114 where the leading end of the roll paper 101 enters regardless of the rotational position of the cover 1.

Next, a description will be given of the remaining part of the interlocking mechanism 2 which is partially formed by the biasing structure of the cover 1 by the coil spring 9. The movable blade 110 rotatably attached to the cutter frame 108a positioned below by the support shaft 12 has a pressing portion 13 formed on the lower surface thereof. This pressing portion 13
Is positioned so as to face the cover hole 4 formed in one of the cutter frames 108a and penetrate the cover hole 4 regardless of the rotational position of the movable blade 110. For this reason, the pressing portion 13 is connected to the movable blade 1.
In accordance with the turning operation of 10, the roll paper 101 passing through the paper path 114 is displaced in a direction orthogonal to the paper width direction. Therefore, a pressing piece 14 is formed on the cover 1 on the opposite side to the guide piece 10 in accordance with the displacement trajectory of the pressing portion 13. Here, the pressing portion 13 on the movable blade 110 side and the pressing piece 1 on the cover 1 side
As shown in FIG. 2, when the movable blade 110 is located at the initial position (shown by a solid line), the pressing portion 13 does not press the pressing piece 14 of the cover 1 as shown in FIG. As the movable blade 110 is driven and rotates in the direction of the fixed blade 109 (shown by a two-dot chain line), the pressing portion 13 is set so as to press the pressing piece 14 of the cover 1. Therefore, the cover 1 is provided with the movable blade 11
When the movable blade 110 is located at the initial position, the entrance space 126 is closed, and when the movable blade 110 enters the paper path 114, the entrance space 126 is opened so as to interlock with the movable blade 110. Operate.

In such a configuration, the paper path 114
The leading end of the rolled paper 101 after printing enters the paper in the curling direction due to the curl, that is, in the present embodiment, the entrance in the cut blade installation space 107 in which the movable blade 110 is stored. Attempts to proceed in the direction of the space 126, and thereby attempts to enter the cutting blade installation space 107 from the entrance space 126 located in the traveling direction. On the other hand, when the roll paper 101 after printing enters the paper passage 114, the movable blade 110 is still positioned at the initial position, so that the entrance space 126 is closed by the cover 1 and the roll paper 10
1 is prevented from entering. Then, the cover 1 is rotated by the interlocking mechanism 2 in conjunction with the rotation of the movable blade 110 that advances in the direction of the fixed blade 109, and the entrance space 126 is opened. This prevents the cover 1 from interfering with the rotating movable blade 110.

When the entrance space 126 is closed by the cover 1, the roll paper 101 that has entered the paper passage 114 is guided by the guide surface 1 formed on the guide piece 10 of the cover 1.
1 reliably guides the sheet in the sheet discharging direction.

Further, the interlocking mechanism 2 includes a coil spring 9 for urging the cover 1 in a direction to close the entrance space 126.
When the cover 1 is opened and closed, the movable blade 11
0, that is, the rotation operation of the cover 1 is merely linked to the rotation operation of the cover 1, that is, only the cover 1 is rotated in the direction in which the movable blade 110 opens the entrance space 126 as the movable blade 110 enters the paper path 114. The interlocking mechanism 2 is fully configured by the configuration,
Therefore, the structure and mechanism can be simplified.

In the embodiment, the entrance space 126 in which the cover 1 opens and closes should be the entrance space 126 in which the roll paper 101 advances by curling due to its curl. In the present embodiment, inner roll paper is used as the roll paper 101, and the leading end of the roll paper 101 is the entrance space 1 in the cut blade installation space 107 in which the movable blade 110 is stored.
26 in order to proceed in the direction of 26
6 is configured to be opened and closed by the cover 1, but if the roll paper 101 is an externally wound paper, and the leading end of the roll paper 101 is the fixed blade 10
When the cover 1 is to be advanced in the direction of the entrance space 126 in the cut blade installation space 107 in which the cut 9 is stored, the cover 1 needs to be configured to open and close the entrance space 126.

In the present embodiment, as the interlocking mechanism 2, the pressing portion 13 provided on the movable blade 110 is used.
Is configured to press the pressing piece 14 provided on the cover 1, but it is not necessary to limit the configuration to such a configuration in practice. That is, as an example, the drive mechanism 112 for rotationally driving the cover 1 and the cover 1 are structurally associated with each other, and the drive mechanism 11
The cover 1 may be configured to be driven to rotate in accordance with the mechanical displacement of (2).

[0035]

According to the first aspect of the present invention, there is provided a cutter apparatus comprising a pair of cutter frames opposed to each other via a predetermined cutting blade installation space, and a pair of the cutter frames and the cutting blade installation space. A paper path for passing the roll paper after printing, a fixed blade disposed along the paper path in the cut blade installation space, and a fixed blade via the paper path in the cut blade installation space. A movable blade, which is swingably attached so as to mesh with, a drive mechanism for operating the movable blade, and an entrance space connected from the paper path to the cut blade installation space where the fixed blade or the movable blade is located. A cover that can be opened and closed, the entrance space is closed at a position before the movable blade enters the paper path, and the entrance space is opened at a position after the movable blade enters the paper path. And an interlocking mechanism that interlocks the operation of the cover with the operation of the movable blade by the driving mechanism, so that when the movable blade is located at the initial position, the entrance space connected to the cutting blade installation space is closed. Cover prevents the leading edge of the roll paper from entering the cut blade installation space from the entrance space when the leading edge of the roll paper enters the paper path, thus preventing the occurrence of jams. As a result, it is possible to ensure the proper issuing operation of the print publication by the roll paper.

According to a second aspect of the present invention, in the automatic cutter according to the first aspect, an entrance space extending from the paper path to the cut blade installation space where the fixed blade or the movable blade is located is formed by the roll paper. Since the entrance space is about to enter due to the curl, in this case, the cover can reliably prevent the leading end of the roll paper from entering the cutting blade installation space from the entrance space. It is possible to reliably prevent the leading end of the roll paper from entering the installation space.

According to a third aspect of the present invention, in the cutter device according to the first or second aspect, the cover is formed with a guide surface that guides a leading end of the roll paper that has entered the paper path in a discharge direction. Therefore, the leading end of the roll paper is guided by the guide surface, and it is possible to reliably prevent the leading end of the roll paper from entering the entrance space.

The invention described in claim 4 is the first to third aspects of the present invention.
In the cutter device according to any one of the above, since the interlocking mechanism includes an urging means for urging the cover in a direction to close the entrance space, the pivoting operation of the movable blade when opening and closing the cover. The movable blade rotates the cover in a direction to open the entrance space in accordance with the operation of entering the paper path, as in the invention described in claim 5. A structure that is only operated is sufficient, so that the structure and mechanism can be simplified.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a cutter device according to an embodiment of the present invention.

FIG. 2 is a vertical sectional side view of the cutter device.

FIG. 3 is a vertical sectional side view schematically showing an example of a printer including a conventional cutter device.

FIG. 4 is an exploded perspective view of the cutter device.

FIG. 5 is an exploded perspective view of a driving mechanism included in the cutter device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 cover 2 interlocking mechanism 9 urging means (coil spring) 11 guide surface 101 roll paper 107 cut blade installation space 108 a, 108 b cutter frame 109 fixed blade 110 movable blade 112 drive mechanism 114 paper path 126 entrance space

Claims (5)

[Claims] 1. A pair of cutter frames disposed opposite to each other via a predetermined cut blade installation space, and a paper passage formed in the pair of cutter frames and the cut blade installation space and passing rolled paper after printing. A fixed blade disposed along the paper path in the cut blade installation space; and a movable swingably mounted to mesh with the fixed blade via the paper path in the cut blade installation space. A blade, a drive mechanism for operating the movable blade, a cover for opening and closing an entrance space connected to the cut blade installation space from the paper path to the fixed blade or the movable blade, and a cover for the paper path. The drive mechanism is configured to close the entrance space at a position before the movable blade enters, and to open the entrance space at a position after the movable blade enters the paper path. An interlocking mechanism that interlocks the operation of the cover with the operation of the movable blade. 2. The entrance space that continues from the paper path to the cut blade installation space where the fixed blade or the movable blade is located is the entrance space into which the roll paper tries to enter due to its curl. Cutter device. 3. The cutter device according to claim 1, wherein the cover has a guide surface that guides a leading end of the roll paper that has entered the paper path in a discharge direction. 4. The cutter device according to claim 1, wherein the interlocking mechanism includes an urging means for urging the cover in a direction to close the entrance space. 5. The cutter device according to claim 4, wherein the movable blade rotates the cover in a direction to open the entrance space in accordance with an operation of entering the paper path.