JPH06226687A - Long sheet member cutting device - Google Patents

Abstract

PURPOSE:To provide a long sheet member cutting device preventing cutter lock and double cutting of a long sheet member. CONSTITUTION:A long sheet member cutting device is provided with a pair of fixed blade 20 and movable blade 33 with cutting edge parts, formed at one edge parts, disposed opposedly with a sheet carrier path in between, and the fixed blade 20 or movable blade 33 is provided with a plane 33a extended downstream along the sheet carrier path from the cutting edge part. Sheet guides 34a mutually opposed being spaced in the orthogonal direction to the sheet conveying direction almost by the same measure as the width of a long sheet member 30 are formed at the plane 33a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a long sheet member cutting device for cutting a long sheet member into a predetermined length in a receipt printer which issues a receipt at an electronic cash register.

[0002]

2. Description of the Related Art As a conventional example of a long sheet member cutting device, a paper cutter incorporated in a receipt printer of an electronic cash register will be described with reference to FIGS.
In this receipt printer 1, as illustrated in FIG.
A pair of paper guides 3, 4 arranged at a position communicating with the paper insertion opening 2 are fixedly attached to a main frame (not shown), and a paper conveyance path formed by these paper guides 3, 4 facing each other. 5 communicates with the printer unit 6. Here, in the printer section 6, a thermal head 8 is attached to a bracket 7 which is pivotally supported by a main frame so as to be openable and closable, and the thermal head 8 is push plate 9 which is pivotally supported by the main frame so as to be openable and closable.
By means of a spring 10 attached to the paper guide 4
The structure is such that it is pressed against the platen roller 11 located above. The platen roller 11 is driven by a carry motor 13 via a platen roller gear 11 a and an idler gear 12. In the receipt printer 1, a pair of sheet guides 1 are provided, each of which has a sheet conveyance path 15 that is a sheet conveyance path that communicates with the sheet cutter 14 from the printer unit 6 and further communicates with a receipt discharge port (not shown).
6 and 17, and a paper guide 18 arranged on the downstream side of the paper cutter 14. Here, the paper guide 16 located below is fixedly attached to the main frame, but the paper guide 17 located above is
It is rotatably attached to the bracket 7 with an attachment portion protruding upward from the rear end thereof, and forms a jam detection portion together with a micro switch 19 for detecting the rotation.

In such a receipt printer 1,
As shown in FIG. 4, the paper cutter 14 has a flat columnar fixed blade 20 and a movable blade 21 having a cutting edge portion formed on one edge thereof.
The fixed blade 20 and the movable blade 21 are arranged so as to face each other with the cutting blade portions facing each other across the sheet conveying path 15 and form a slit-shaped cutting portion 22. Here, the movable blade 21 has one end on which the cutting blade portion is formed as a swing end, the swing end side is directed to the upstream side, and an upper surface 21a contacting the cutting blade portion is a lower surface of the paper transport path 15. They are arranged alongside each other, and are rotatably attached to the frame 24 by shafts 23 provided upright on both sides on the fixed end side. The movable blade 21 has an eccentric shaft 26a loosely fitted in a cutter lever 25 attached to one side where the shaft 23 is erected and a long hole formed at the swing end of the cutter lever 25. Is connected to a cutter motor 27 via a gear 26 which is erected, and is driven by the cutter motor 27. Furthermore, the fixed blade 20
The frame 24 is supported by shafts 28 that are erected on both sides on the fixed end side with one end where the cutting blade portion is formed as a swing end.
It is rotatably attached to. The fixed blade 20 is urged by the torsion coiled spring 29 to extend forward from the swinging end thereof, and the guide surface 20a which is in the same plane as the cutting blade portion has a cutting blade portion of the movable blade 21. Abutting against.

In the receipt printer 1 having such a configuration, when the receipt paper 30 is inserted from the paper insertion port 2 into the paper transport path 5, the receipt paper is sequentially transported under the thermal head 8 as the platen roller 11 rotates. When a predetermined image is printed at the time of passing, it passes through the cutting portion 22 formed by the fixed blade 20 and the movable blade 21, and the upper surface 21a also serving as a guide for the movable blade 21 and the paper guide 18 cause an electronic component (not shown). You will be led to the receipt issue port of the cash register.

When the cutter motor 27 is activated,
The eccentric shaft 2 attached to the gear 26 rotates the gear 26.
Since 6a moves circularly while sliding in the long hole, the shaft 23
The oscillating end of the cutter lever 25 attached to the movable blade 21 that rotates about the fulcrum pivots about the shaft 23, and the movable blade 21 also oscillates together with the cutter lever 25.
In this way, when the movable blade 21 swings about the shaft 23 as a fulcrum, the cutting blade portion formed on the swinging end side of the movable blade 21 and the cutting blade portion of the fixed blade 20 intersect to form a long sheet member. The receipt paper 30 is cut by the shearing stress and the receipt 31 is issued.

[0006]

In such a paper cutter, the rear end portion of the receipt 31 riding on the upper surface 21a of the movable blade 21 is positionally unstable in the width direction, and therefore, as shown in FIG. As described above, the rear end portion is displaced in the width direction, the receipt 31 is skewed, and the corner of the rear end portion is advanced to the cutting portion 22 from the opposite side and is cut twice, or the corner of the rear end portion that is advanced to the cutting portion 22 is A piece of paper cut twice is caught between the fixed blade 20 and the movable blade 21 to cause a cutter lock state.

[0007]

Means for Solving the Problems A pair of fixed blades and movable blades, which are arranged so as to face each other with cutting blade portions formed on one edge across a sheet conveying path, are provided. In a long sheet member cutting device having a flat surface that extends to the downstream side along the sheet conveying path from the cutting edge portion to the blade, in the direction orthogonal to the sheet conveying direction, the width of the long sheet member is almost the same. Sheet guides having the same distance and facing each other were formed on the flat surface.

[0008]

The sheet guide positions the long sheet member cut by the fixed blade and the movable blade in the width direction near the cutting blade.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. The same parts as those shown in the conventional example are designated by the same reference numerals, and detailed description thereof will be omitted. The paper cutter 32, which is the long sheet member cutting device of this embodiment, is incorporated in the receipt printer 1 of the electronic cash register as in the conventional example.

First, the sheet cutter 32 has a flat columnar fixed blade 20 and a movable blade 3 each having a cutting edge portion formed on one edge thereof.
3, the fixed blade 20 and the movable blade 33 are arranged with the cutting blade portions facing each other across the sheet conveying path 15 to form a slit-shaped cutting portion 22. Here, the movable blade 33 has an upper surface 33a, which is a flat surface in which one end where the cutting blade portion is formed is a swing end and the swing end side is directed to the upstream side in the paper feeding direction and is in contact with the cutting blade portion. It is arranged along the lower surface of the paper transport path 15,
The frame 24 is provided by the shafts 23 provided upright on both sides of the fixed end.
It is rotatably attached to. A groove 34 having substantially the same width as the receipt paper 30 is formed on the upper surface 33a of the movable blade 33 so as to gradually become deeper from the swing end side toward the fixed end side. Further, in this embodiment, the brush 35 whose tip is lightly pressed against the upper surface 33a is attached to the fixed blade 20 via the bracket 36.

In such a configuration, the receipt paper 30 on which the image is printed by the printer unit 6 of the receipt printer 1 passes through the cutting unit 22 formed by the fixed blade 20 and the movable blade 33, and the brush 35. The groove 34 formed in the movable blade 33 to the extent that it is prevented from rising
While being pressed by the sheet guide 18, the sheet guide 18 guides the sheet to a receipt issuing port (not shown). Then, when the movable blade 33 is driven by the cutter motor 27 to swing, the receipt paper 30 is cut and the receipt 31 is issued.

At this time, the rear end of the receipt 31 has a groove 34.
Positioned in the width direction by being guided by both side surfaces 34a which are located inside and are sheet guides of the groove 34. Therefore, the rear end is displaced in the width direction, the receipt 31 is skewed, and the corner of the rear end advances to the cutting part 22 from the opposite side and is cut twice, or the corner of the rear end that advances to the cutting part 22. It is prevented that a piece of paper cut twice or more is caught between the fixed blade 20 and the movable blade 33 and is in a cutter lock state. Further, the receipt 31 after being cut is pressed by the brush 35 and prevented from floating, so that the receipt 31 is reliably positioned in the groove 34 and is reliably positioned in the width direction. Further, in the present embodiment, since the ascending slope in the sheet conveying direction with respect to the horizontal plane is gentler on the bottom surface of the groove 34 than on the upper surface 33a of the movable blade 33, the backflow of the entire receipt 31 is less likely to occur than the conventional one.

In this embodiment, the sheet guide is provided in the groove 34.
However, the present invention is not limited to this, and a protrusion serving as a sheet guide may be formed or attached to the upper surface 33a of the movable blade 33.

[0014]

As described above, the present invention is provided with a pair of fixed blades and movable blades, which are arranged so as to face each other with the cutting edge portions formed on one edge across the sheet conveying path. In a long sheet member cutting device having a fixed blade or a movable blade having a flat surface extending downstream from the cutting blade portion along the sheet conveying path, a long sheet member is formed in a direction orthogonal to the sheet conveying direction. Since the sheet guides facing each other with the same size as the width of the sheet are formed on the flat surface, the sheet guide can position the sheet member cut by the fixed blade and the movable blade in the width direction near the cutting edge. Therefore, the cut sheet member can be prevented from skewing, and the sheet member can be prevented from being cut twice due to skewing and the cutter lock can be prevented.

[Brief description of drawings]

FIG. 1 is a perspective view of a sheet cutter according to an exemplary embodiment of the present invention as viewed from an upstream side of a sheet conveyance path.

FIG. 2 is a vertical side view showing a receipt printer.

FIG. 3 is a vertical cross-sectional side view showing a conventional receipt printer.

FIG. 4 is a perspective view of the sheet cutter as viewed from the upstream side of the sheet conveyance path.

FIG. 5 is an explanatory diagram showing a state in which the skew of the receipt is skewed.

[Explanation of symbols]

 20 Fixed Blade 30 Long Sheet Member 32 Long Sheet Cutting Device 33 Movable Blade 33a Flat Surface 34a Sheet Guide

Front page continuation (72) Inventor Tomokazu Arakawa 6-78 Minamimachi, Mishima-shi, Shizuoka Tokyo Electric Co., Ltd. Mishima factory (72) Katsune Hayashi 6-78 Minami-machi, Mishima, Shizuoka Tokyo Electric Co., Ltd. Mishima factory Within

Claims (1)

[Claims] 1. A pair of fixed blades and a movable blade, which are arranged so as to face each other with a cutting blade portion formed on one edge thereof across a sheet conveying path, and the fixed blade or the movable blade is provided with the cutting blade. In a long sheet member cutting device having a flat surface extending from the blade portion to the downstream side along the sheet conveying path, the sheet is separated by approximately the same dimension as the width of the long sheet member in the direction orthogonal to the sheet conveying direction. And a sheet guide facing each other on the flat surface.