JPH04365591A - Cutter device - Google Patents

Abstract

PURPOSE:To reduce the size of a device and to perform smooth cutting by providing a stationary cutting edge which is composed of an upper cutting edge formed integrally with a cutter base and a lower cutting edge located with a specified gap between the upper and lower cutting edges and moving a moving cutting edge between the upper and lower cutting edges, in a cutter device for a printer. CONSTITUTION:A cutter upper cutting edge part 23A is formed integrally with a cutter base 11. A stationary cutting edge 21 comprises the cutter upper cutting edge 23A and a cutter lower cutting edge 22 positioned facing the cutter upper cutting edge with a specified distance therebetween A moving cutting edge 31 is disposed between the cutter upper cutting edge part 23A and the cutter lower cutting edge 22 so that it is movable in a cutting direction by means of driven mechanism 41 located to the cutter base 11. In this constitution, a paper sheet is inserted in a paper insertion port 24 of the stationary cutting edge 21 and by driving the drive mechanism 41, a cutter arm 42 is rotated to bring the moving cutting edge 31 into adhesion to the lower cutting edge 22 through guidance of the cutter upper cutting edge part 23A. The moving cutting edge is moved in a cutting direction and effects cutting in association with the cutter lower cutting edge 22.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutter device applied to printers and the like.

0002

2. Description of the Related Art Conventionally, electronic devices such as printers and cash registers are provided with cutter devices for cutting printed paper.

A conventional cutter device, as shown in FIGS. 3 and 4, includes a cutter base 11, a fixed blade 21, and a movable blade 3.
1 and a drive mechanism 51.

[0004] Here, the cutter base 11 has a fixed blade 2.
1 and the movable blade 31, etc., to the main body frame 1 of an electronic device (for example, a printer). A fixed blade 21 is fixed on this cutter base 11. This fixed blade 21 is composed of a lower cutter blade 22 and an upper cutter blade 23 that are attached with a certain gap between them. The cutter lower blade 22 works together with the movable blade 31 to shear the paper. In addition, the cutter upper blade 23
guides the movable blade 31 so that the movable blade 31 can shear the paper P in close contact with the cutter lower blade 22. Note that the lower cutter blade 22 and the upper cutter blade 23 are provided with paper insertion openings 24 aligned with each other, as shown in FIG.

Furthermore, the movable blade 31 is provided in the gap between the fixed blade 21 so as to be movable in the cutting direction.

Further, the drive mechanism 51 is means for driving the movable blade 31, and includes a cutter arm 52, a drive motor (
7) and a power transmission mechanism (not shown). The cutter arm 52 is rotatably provided on the cutter base 11 via a support shaft 52a, and the movable blade 31 is connected to one end of the cutter arm 52 via an elongated hole 52b and an engagement shaft 52c. The drive motor is formed using a motor 7 that drives the feed roller 3 and the like of the printer shown in FIG.

[0007]The printing unit 2 of the printer prints the paper, and the paper is sent to the paper insertion slot 2 of the fixed blade 21 via the feed roller 3, etc.
In order to cut the paper P inserted in 4, the drive motor (7
) to rotate. Then, power is transmitted to the cutter arm 52 via the power transmission mechanism, and the arm 52 reciprocates. As a result, the movable blade 31 is moved from the position shown in FIG.
is sheared in cooperation with the cutter lower blade 22.

[0008]

However, in order to expand the field of use of the above-mentioned conventional cutter devices, there is a strong demand for miniaturization and cost reduction. However, the main parts of the drive mechanism 51 [drive motor (7), etc.]
A main body frame 1 to which is attached a cutter base 1 to which a fixed blade 21 and a movable blade 31 are attached.
1 and 1 are provided separately, which requires a large amount of installation space and has the disadvantage that it is difficult to meet demands for downsizing.

By the way, in order to reduce the number of parts and achieve miniaturization, it is conceivable to configure the fixed blade 21 with only the cutter lower blade 22. However, in this case, the movable blade 3
1 may be moved in the cutting direction while floating from the lower cutter blade 22, making it impossible to smoothly cut the paper.

SUMMARY OF THE INVENTION In view of the above circumstances, an object of the present invention is to provide a cutter device that can cut paper smoothly while reducing size and cost.

[0011]

[Means for Solving the Problems] The present invention provides a cutter base, a fixed blade consisting of a lower cutter blade and an upper cutter blade mounted on the cutter base with a certain gap between them, and a gap between the fixed blades. In a cutter device including a movable blade provided to be movable in a cutting direction and a drive mechanism for driving the movable blade, the cutter upper blade is integrally provided on the cutter base and the drive mechanism is provided. It is characterized by having the following.

0012

In the present invention, the paper fed to the fixed blades (lower cutter blade, upper cutter blade) is sheared by the cooperation of the lower cutter blade and the movable blade that is moved in the cutting direction by the drive mechanism. At this time, the movable blade is guided by the cutter upper blade integrally provided on the cutter base so as to be in close contact with the cutter lower blade, so that the paper can be cut smoothly.

[0013] Furthermore, the cutter base is equipped with a driving mechanism as well as a fixed blade and a movable blade, and the upper cutter blade that constitutes the fixed blade is provided integrally with the base, so it can be installed as a unit. Space is saved and the number of parts is reduced.

As a result, the paper can be cut smoothly while reducing the size and cost.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be explained based on the drawings.

As shown in FIGS. 1 and 2, the cutter device according to this embodiment includes a cutter base 11, a fixed blade 21,
It is configured to include a movable blade 31 and a drive mechanism 41. Components that are the same as those shown in FIGS. 3 and 4 are designated by the same reference numerals, and the description thereof will be omitted or simplified.

Here, the cutter base 11 is integrally provided with a cutter upper blade portion 23A that performs the same function as a conventional cutter upper blade (23). Further, the cutter base 11 is provided with a drive mechanism 41.

The drive mechanism 41 includes a cutter arm 42, a drive motor 43, a power transmission mechanism 44, and the like.

The cutter arm 42 is rotatably attached to the cutter base 11 via a support shaft 42a, and a movable blade 31 is attached to the tip of the cutter arm 42 through a long hole 42b and an engagement shaft 42.
They are connected via c, etc.

The power transmission mechanism 44 also connects the drive motor 4
3 is transmitted to the cutter arm 42 to cut the arm 4.
gears 45a, 45b,
Worm 47a, worm wheel 47b, slotted hole 49a
and an engagement shaft 49b.

Here, the gear 45a is attached to the drive motor 43, and the gear 45b attached to the first rotating shaft 46 meshes with the gear 45a. In addition, the first rotating shaft 4
6 is attached with a worm 47a, and a worm wheel 47b attached to the second rotating shaft 48 meshes with the worm 47a. This worm wheel 47b
An engagement shaft member 49b is attached to the cutter arm 42.
It is slidably inserted into a.

[0022] When the drive motor 43 is driven to rotate the gear 45a, the gears 45a, 45b,
The engagement shaft member 49b rotates via the first rotating shaft 46, the worm 47a, and the worm wheel 47b. Then, the cutter arm 42 engages the engagement shaft member 49b and the elongated hole 49.
Rotates back and forth in cooperation with a.

Next, the operation will be explained. The paper inserted into the paper insertion slot 24 of the fixed blade 21 is moved by the movable blade 31 and the lower cutter blade 2, which are moved in the cutting direction by the drive mechanism 41.
It is sheared by cooperation with 2. At this time, the movable blade 31 is guided by the upper cutter blade 23 provided integrally with the cutter base 11 so as to be in close contact with the lower cutter blade 22, so that the paper is cut smoothly.

The cutter base 11 also has a fixed blade 2.
1 and the movable blade 31 as well as a drive mechanism 41, and the cutter upper blade part 2 constituting the fixed blade 21.
3A is provided integrally with the base 11, it is possible to form a unit, save installation space, and reduce the number of parts.

As a result, paper can be cut smoothly while reducing size and cost.

[0026]

[Effects of the Invention] According to the present invention, the upper cutter blade is integrally provided on the cutter base and a drive mechanism is provided, so that paper can be cut smoothly while reducing size and cost. .

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a side view of one embodiment.

FIG. 3 is a diagram showing a printer to which a conventional cutter device is applied.

FIG. 4 is a diagram showing a schematic configuration of a conventional cutter device.

[Explanation of symbols]

11 Cutter base 21 Fixed blade 22 Cutter lower blade 23A Cutter upper blade part 31 Movable blade 41 Drive mechanism

Claims (1)

[Claims] Claim 1: A cutter base, a fixed blade consisting of a lower cutter blade and an upper cutter blade mounted on the cutter base with a certain gap from each other, and a fixed blade that is movable in the cutting direction in the gap between the fixed blades. A cutter device comprising a movable blade and a drive mechanism for driving the movable blade, characterized in that the cutter base is integrally provided with the cutter upper blade and the drive mechanism is provided. cutter device.