JP2014076514A - Cutter device and printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the occurrence of a trouble such as accidental intrusion of a paper clip or a coin into a gap through which a movable blade of a cutter device enters or exits.SOLUTION: A body is vertically splittable across a paper conveyance path. A fixed blade is stationary disposed above or below the paper conveyance path, and a movable blade facing the fixed blade through the paper conveyance path is disposed to be movable between a cutting position where a paper is clamped between the fixed blade and the movable blade to cut, and a housing position where the movable blade is housed in a pocket. A space is disposed adjacent to the fixed blade for the movable blade to enter/exit in accordance with cutting operation. A cover is movable between a covered position covering things arranged in the space below the cover and a retreat position where the paper conveyance path is not interfered. An interlocking part positions the cover at the covered position when the body is split, and positions the cover at the retreat position when the body is not split.

Description

  Embodiments described herein relate generally to a cutter device and a printer.

2. Description of the Related Art Conventionally, there are printers that print on roll paper wound with belt-like paper, and many of such printers come with a cutter device for cutting the paper. There is a so-called guillotine type cutter that cuts a paper sheet from above and below.
The guillotine-type cutter device includes a fixed blade and a movable blade that face each other across the paper conveyance path, and moves the movable blade in the contact / separation direction with respect to the fixed blade to place paper between the fixed blade and the movable blade. Cut by pinching.

  A printer including the above-described cutter device can open the casing in order to replenish roll paper. Moreover, the cutter apparatus is provided with a clearance for the movable blade to enter and exit for the convenience of moving the movable blade during cutting. There is a risk that clips, coins, and the like may accidentally enter the gap when the housing is opened during replenishment or replacement of roll paper.

  The cutter device according to the embodiment cuts a strip-shaped paper, and includes a housing, a paper conveyance path, a fixed blade, a movable blade, a space, a cover, and an interlocking unit. The housing can be divided into an upper unit and a lower unit. The paper conveyance path is provided between the upper unit and the lower unit. The fixed blade is fixedly provided on the upper unit or the lower unit, and has a blade toward the paper conveyance path. The movable blade has a blade facing the fixed blade via the paper conveyance path, and a position where the paper is cut between the fixed blade and a position stored in a pocket provided in the lower unit or the upper unit. It is provided so that it can move between. The space is provided next to the fixed blade and allows the movable blade to enter and exit with the cutting operation. The cover is movable to a covering position that covers a pocket and a space provided in the lower unit and a retracted position that does not interfere with the paper conveyance path. The interlocking unit positions the cover in the covering position when the upper unit and the lower unit are in the divided state, and positions the cover in the retracted position when the upper unit and the lower unit are in the non-divided state.

FIG. 1 is a vertical right side view schematically showing the structure of the printer of the embodiment. FIG. 2 is a vertical right side view showing the structure of the paper cutting unit of the embodiment. FIG. 3 is an enlarged vertical right side view showing the main part of the paper cutting unit of the embodiment. FIG. 4 is a perspective view illustrating a structure of the paper cutting unit according to the embodiment. FIG. 5 is a vertical right side view showing the structure of the paper cutting unit of the embodiment. FIG. 6 is an enlarged vertical right side view showing the main part of the paper cutting unit of the embodiment. FIG. 7 is a perspective view illustrating the structure of the paper cutting unit according to the embodiment.

FIG. 1 is a vertical right side view schematically showing the structure of the printer 1 of the embodiment, and the left side in FIG. 1 is the front side of the printer 1. Hereinafter, expressions such as up / down / left / right, front, back, front, etc. in the description with reference to the drawings are performed based on the front of the printer 1.
The printer 1 includes a housing 2, a roll paper holding unit 3, a printing unit 4, and a paper cutting unit 5.

The housing 2 accommodates the above-described units (the roll paper holding unit 3, the printing unit 4, and the paper cutting unit 5), and includes a box-shaped main body 21 having an opening on the upper surface, and an opening of the main body 21. And a lid portion 22 for closing. Here, the main body portion 21 is an embodiment of the lower unit, and the lid portion 22 is an embodiment of the upper unit.
The lid portion 22 is pivotally attached to the back side of the main body portion 21 at the back side of the edge, and opens and closes the opening of the main body portion 21 with the rotation. A paper conveyance path is formed between the lid 22 and the main body 21 from the back to the front, and along the paper conveyance path, from the back to the front, the roll paper holding unit 3, the printing unit 4, and the paper The cutting part 5 is arranged in order.

  The roll paper holding unit 3 is an embodiment of the paper storage unit, and has a semi-cylindrical depression 31 and holds the roll paper R placed in the depression 31 so as to be fed out freely. The printing unit 4 includes a thermal head 41 and a platen 42, and prints on the fed roll paper R.

  2 and 5 are longitudinal right side views showing the structure of the paper cutting unit 5 of the embodiment. 3 and 6 are vertical right side views of the main part of the paper cutting unit 5 of the embodiment. 4 and 7 are perspective views showing the structure of the paper cutting unit 5 of the embodiment. 2, FIG. 3, and FIG. 4 are in a state in which the housing 2 is opened, and FIGS. 5, 6, and 7 are in a state in which the housing 2 is closed.

The paper cutting unit 5 is an embodiment of a cutter device, and includes a fixed blade 51, a movable blade 52, a movable blade storage pocket 53, a space 54, a cover 55, and an interlocking unit 56.
The fixed blade 51 is fixed to the lid portion 22 and has a blade at the lower end facing the paper conveyance path with the housing 2 closed. The movable blade storage pocket 53 is formed in the main body 21 and stores the movable blade 52 so as to be slidable in the vertical direction. The movable blade 52 has a blade at the upper end, and the blade moves from the bottom to the top of the paper conveyance path, thereby cutting the roll paper R between the fixed blade 51 and the movable blade 52. The space 54 is a space set in front of the fixed blade 51, and the tip of the movable blade 52 enters and exits when the roll paper R is cut.

  The cover 55 is positioned on the paper conveyance path in a state where the housing 2 is opened and covers the movable blade storage pocket 53, and the cover 55 covering the movable blade storage pocket 53 has a substantially rectangular plan view. It is a member. The cover 55 has a shaft 55a parallel to the paper width direction at the long side portion on the upstream side in the paper transport direction, and this shaft 55a is rotatably supported by the interlocking portion 56.

The interlocking portion 56 includes a slide portion 61, a flange portion 62, a coil spring 63, a pair of protrusions 64, a storage portion 65, and a torsion spring (not shown).
The slide portion 61 is provided in the main body portion 21 so as to be slidable in the vertical direction. The flange portion 62 holds the shaft 55 a and is provided at the upper end of the slide portion 61.
The coil spring 63 is arranged so that one end thereof is fixed in the main body portion 21 and the other end is fixed to the slide portion 61 so as to have a substantially natural length when the slide portion 61 is positioned above the slide range. When the slide part 61 is positioned on the lower side of the slide range, the slide part 61 is biased in the direction of pulling up.

The pair of projecting portions 64 are provided at both ends along the paper width direction of the slide portion 61 at substantially the same interval as the paper width of the roll paper R. These protrusions 64 also serve as a paper width guide that regulates the movement of the roll paper R in the paper width direction in the vicinity of the printing unit 4.
The lid portion 22 is provided with an interference portion 22a that interferes with the projection portion 64 and pushes down the projection portion 64 in a state where the housing 2 is closed.

The storage portion 65 is located upstream of the movable blade storage pocket 53 in the paper conveyance direction, and slidably stores the slide portion 61. When the slide portion 61 slides downward, the shaft 55a gripped by the flange portion 62. The cover 55 that is pulled in by being pulled down is also accommodated. The position of the cover 55 when it is pulled into the storage unit 65 is referred to as a retracted position. The front end of the cover 55 at the retracted position is positioned at a height that does not reach the paper conveyance path, and guides the roll paper R downstream of the platen 42 in the paper conveyance direction.
Here, the cover 55 is urged around the shaft 55 a by a torsion spring, and when it comes out of the storage portion 65, it rotates counterclockwise in FIG. 3 to reach the covering position and covers the movable blade storage pocket 53. .

In such a configuration, when the housing 2 is opened, the cover 55 is pushed up by the slide portion 61 that has been slid according to the biasing force of the coil spring 63 as shown in FIGS. 2, 3, and 4. According to the bias of the torsion spring, it is located at the covering position and covers the movable blade storage pocket 53.
The user opens the housing 2 when performing various maintenance such as replacement of the roll paper R. At this time, the movable blade storage pocket 53 is covered with the cover 55 and is not exposed.

When the housing 2 is closed, as shown in FIGS. 5, 6, and 7, the interference portion 22 a pushes down the protrusion 64, so that the slide portion 61 moves downward against the bias of the coil spring 63. As a result, the shaft 55a gripped by the flange portion 62 is pulled down, and further, the cover 55 is stored in the storage portion 65 while rotating clockwise against the urging force of the torsion spring. .
When printing, the casing 2 is closed. At this time, the cover 55 guides the roll paper R without disturbing the transport of the roll paper R along the paper transport path.

  As described above, according to the present embodiment, when the housing 2 is opened, the cover 55 covers the movable blade storage pocket 53, so that a foreign matter such as a clip or a coin accidentally enters the movable blade storage pocket 53. Can be prevented.

Note that the shape of the cover 55 is not limited to the shape and size illustrated in the present embodiment, and other shapes may be used as long as the movable blade storage pocket 53 can be covered.
In the present embodiment, the case where the movable blade 52 and the movable blade storage pocket 53 are provided in the lower unit has been described. However, in the implementation, the movable blade 52 and the movable blade storage pocket 53 are provided in the upper unit, When the fixed blade 51 and the space 54 are provided in the lower unit, a cover 55 that covers the space 54 may be provided.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

1: printer, 2: housing, 3: roll paper holding unit (paper storage unit), 4: printing unit,
5: Paper cutting unit (cutter device),
21: Main body (lower unit), 22: Lid (upper unit),
51: fixed blade, 52: movable blade, 53: movable blade storage pocket (pocket),
54: space, 55: cover, 55a: shaft, 56: interlocking part,
64: Projection, R: Roll paper

JP 2011-194568 A

Claims (6)

A cutter device for cutting strip-shaped paper,
A housing that can be divided into an upper unit and a lower unit;
A paper conveyance path provided between the upper unit and the lower unit;
A fixed blade that is fixedly provided on the upper unit or the lower unit and has a blade that faces the paper conveyance path;
A position having a blade facing the fixed blade via the paper conveyance path, and a position where the paper is cut between the fixed blade and a position stored in a pocket provided in the lower unit or the upper unit A movable blade movably provided between and
A space provided next to the fixed blade for the movable blade to enter and exit with a cutting operation;
A cover movable to a covering position that covers the pocket and the space provided in the lower unit and a retracted position that does not interfere with the paper conveyance path;
An interlocking unit that positions the cover in the covering position when the upper unit and the lower unit are in a divided state, and positions the cover in the retracted position when the upper unit and the lower unit are in a non-divided state. When,
A cutter device comprising: The cutter device according to claim 1, wherein the interlocking unit pulls the interlock unit into the lower unit to position the cover in the retracted position. 3. The cutter according to claim 1, wherein the cover has a substantially rectangular shape in a plan view at the covering position, and a long side portion on the upstream side in the paper conveyance direction is provided to be rotatable about an axis parallel to the paper width direction. apparatus. The interlocking portion has a protrusion that interferes with the upper unit when the upper unit and the lower unit are in a non-divided state, and the cover is moved in conjunction with the interference between the protrusion and the upper unit. The cutter device according to claim 1, wherein the cutter device is located at the retracted position. The cutter device according to claim 4, wherein a pair of the protrusions are provided at substantially the same interval as the width of the paper and sandwich the paper conveyance path. A paper storage section for storing the belt-shaped paper freely,
A printing unit for printing on the paper fed out from the paper storage unit;
The cutter device according to any one of claims 1 to 5, which cuts paper printed by the printing unit;
Printer with.

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