JPH0639913Y2 - Automatic cutting device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an automatic cutting device for automatically cutting paper, and in particular, for automatically cutting continuous roll paper used in a facsimile or the like. Related to the improvement of automatic cutting device.

[Conventional technology]

2. Description of the Related Art Conventionally, an output device such as a facsimile that prints and records using continuous roll paper is known. In such an output device, the roll paper on which printing has been completed is cut and stored as a record or checked.

As such an automatic cutting device, for example, those shown in FIGS. 4 and 5 have already been proposed by the present applicant.

In FIG. 4, a guide plate 2 for unwinding the roll paper 1 after printing is finished from a roll (not shown) and guiding it toward a discharge port (not shown) in an output device such as a facsimile is provided inside the discharge port. Below this guide plate 2,
The carriage 3 is supported by a guide rod 4 extending in the width direction of the roll paper 1 so as to be movable in the width direction of the roll paper 1. In addition, the carriage 3 has
Both ends of a wire 8 installed between a drive pulley 6 and a driven pulley 7 which are rotationally driven by a traveling motor 5 are connected. The traveling motor 5 drives the drive pulley 6 to travel the wire. As a result, the carriage 3 reciprocates in the width direction of the roll paper 1 with an amplitude equal to or larger than the width dimension of the roll paper 1.

On the carriage 3, a disc-shaped cutter 9 is arranged so that its upper portion projects above the carriage 3.
It is attached to a rotary shaft 10 provided in the above so as to be rotatable synchronously. A rack 11 is arranged below the carriage 3 so as to be substantially parallel to the guide rod 4. Further, the rotation shaft 10 of the cutter 9 has a pinion 12
A is fitted, and this pinion 12A is mounted on the carriage 3
It is meshed with the rack 11 via an idle gear 12B supported by. Therefore, by moving the carriage 3 in the arrow B direction, the pinion 12A is rotated in the arrow A direction via the idle gear 12B, and the cutter 9 is rotationally driven in the arrow A direction.
Further, the guide plate 2 is formed with a slit 13 extending in the width direction of the roll paper 1 along the movement locus of the cutter 9 in the width direction of the roll paper 1, and the cutter 9 is provided via this slit 13. The upper part of the is projected above the guide plate 2.

On the side of the carriage 3, a base portion 14A that can pass through the slit 13 in the vertical direction and a horizontal support portion that is connected to the upper end of the base portion 14A and extends in the width direction of the slit 13.
A support member 14 composed of 14B and having a substantially T-shape as a whole is provided by fixing the base portion 14A with screws 15. On the support portion 14B of the support member 14, the slits are provided on both sides of the cutter 9 in proximity to each other.
The base end portions of a pair of elongated leaf spring-shaped receiving members 16 and 16 extending in the longitudinal direction of 13 are fixed, and the respective intermediate portions of these receiving members 16 and 16 are fixed to the receiving members 16 and 16, respectively. Due to its elasticity, it is lightly pressed onto the guide plate 2. Also, the receiving member reaching the front of the cutter 9.
The tips of 16, 16 are respectively bent in the direction away from the surface 2a of the guide plate 2 so as not to damage the roll paper 1.

As shown in detail in FIG. 5, the roll paper 1 is placed on the guide plate 2 so as to be located respectively near the upstream side and the downstream side of the slit 13 in the transport direction of the roll paper 1. Paper pressing rollers 17, 18 that can be held over the entire width direction
Are rotatably provided around the support shafts 17A and 18A, and these paper pressing rollers 17 and 18 can be rotationally driven by a motor (not shown).

Next, the operation of the already proposed one having the above-mentioned configuration will be described.

In the initial state, the carriage 3 waits on the side of the guide plate 2 so that the cutter 9 faces the extension of the slit 13, and in this state, the roll paper 1 of a predetermined length after printing is pressed by the paper pressing roller 17 When the predetermined cutting position reaches the slit 13, the paper pressing rollers 17, 18 are stopped from rotating, and the roll paper 1 is placed on the guide plate 2 by the paper pressing rollers 17, 18. It is held. After that, the traveling motor 5 is driven by the control signal and the carriage 3 is moved along the guide rod 4 in the arrow B direction. Then, the pinion 12 meshed with the rack 11
A is rotated, and the cutter 9 is rotationally driven in the direction of arrow A. Then, both receiving members 16, 16 whose front ends precede the cutter 9 are rolled by the cutter 9 which is rotating while the roll paper 1 is held on the surface 2a of the guide plate 2 on both sides of the cutter 9. The paper 1 is gradually cut in its width direction. At this time, since the tip of the receiving member 16 is curved so as to be separated from the surface 2a of the guide plate 2,
The roll paper 1 can be easily sandwiched between the receiving member 16 and the guide plate 2, and the floating of the roll paper 1 is prevented by the intermediate portion of both receiving members 16, 16 located on both sides of the cutter 9. Further, since the roller paper 1 is held between the guide plate 2 and the paper pressing rollers 17 and 18, the roll plate 1 is not pulled by the frictional force between the receiving members 16 and 16, and The roll paper 1 can be cut stably.

Then, when the roll paper 1 is completely cut by the rotation of the cutter 9, the carriage 3 is moved by a position detector (not shown).
Is detected and a control signal is output from the control unit to the traveling motor 5, the driving of the traveling motor 5 is stopped, the rotation of the cutter 9 is stopped, and the traveling motor 5 is reversely rotated to cause the carriage 3 to move. Is moved in the direction opposite to the arrow B, the carriage 3 is returned to the above-mentioned initial position, and then stopped. This completes one step of the cutting work.

[Problems to be solved by the device]

By the way, when the roll paper 1 is cut by the disc-shaped cutter 9 as described above, paper dust is generated by this cutting, and the paper dust is deposited on the rack 11. And
If the paper dust continues to accumulate on the rack 11, the meshing state between the rack 11 and the idle gear 12B deteriorates, and the cutting load increases.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems in the previously proposed ones and to provide an automatic cutting device that can always cut roll paper with a small cutting load.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the automatic cutting device of the present invention is
A rack is arranged in the width direction of the continuous roll paper so that each tooth thereof faces upward, and a carriage that is movable along the rack by driving means is arranged. In an automatic cutting device equipped with a disk-shaped cutter that is rotated by movement along a rack via a gear meshing with the rack, a recess for storing paper dust is formed in a flat plate portion between each tooth of the rack. It is characterized by that.

[Action]

According to the present invention having the above-described configuration, the paper dust generated by cutting the roll paper is stored in the recess for storing the paper dust formed in the flat plate portion of the rack, so the paper dust rotates the cutter. There is no adverse effect on the meshing of the gear and the rack for causing the roll paper to be cut, and therefore the roll paper can be cut with a small cutting load at all times.

〔Example〕

Hereinafter, the present invention will be described with reference to the embodiments shown in the drawings. It should be noted that the same or corresponding configurations as those of the previously proposed ones will be designated by the same reference numerals in the drawings and will be schematically described.

In this embodiment, the carriage 3 is reciprocally moved by a traveling motor (not shown) in the width direction of the roll paper (not shown) with an amplitude larger than the width of the roll paper.

As shown in FIG. 2, a disc-shaped cutter 9 is coaxially rotatably attached to the carriage 3 on a rotary shaft 10 provided on the carriage 3. The rotary shaft 10 has a pinion 12A. It is fitted. A rack 11 extending in the width direction of the roll paper is disposed below the carriage 3, and an idle gear 12B that meshes with the rack 11 and the pinion 12A is rotatable on the carriage 3. Supported by.

In the present invention, in particular, as shown in FIG. 1, a plurality of spur teeth 20, 20 ... Are provided on the upper surface of the rack 11 at equal intervals, and a pair of adjacent spur teeth 20. Holes 22 each having a rectangular cross section are formed in the flat plate portion 21 between the first and the second portions as an example of a concave portion for accommodating paper powder. Each hole 22
Is formed to have a size substantially equal to the tooth thickness of the idle gear 12B at a substantially central portion in the width direction of the rack 11.

On the other hand, each trough 24 located between each pair of spur teeth 23, 23 of the idle gear 12B is required for meshing with the rack 11 and the pinion 12A, as shown by hatching in FIG. It has been deeply excised.

According to the above-described configuration, the idle gear 12B moves along the rack 11 to rotate the cutter 9 by moving the carriage 3 by the running motor (not shown), and the roll paper (not shown) can be cut. it can.

By the way, paper dust is generated by cutting the roll paper. Of these, the ones that try to accumulate on the flat plate portion 21 of the rack 11 are dropped and stored in each hole 22, and the rack
Anything that has fallen onto each spur tooth 20 of 11 slides down the slope of each spur tooth 20 and is stored in the hole 22 as well, so that the rack 11 is prevented from meshing with the idle gear 12B and the cutting load is increased. No paper dust is deposited to make it larger.

On the other hand, since each valley portion 24 of the idle gear 12B is formed deeper than a predetermined mesh with the rack 11 and the pinion 12A is obtained, even if paper dust adheres to the idle gear 12B, the rack 11 and the pinion 12A. There is no possibility of adversely affecting the meshing with.

Therefore, the roll paper can always be cut with a small cutting load.

It should be noted that the paper dust stored in the holes 22 is not required in consideration of the required durability of the cutting device if each hole 22 is formed to a certain depth, but it is required to downsize the cutting device. If it is necessary to reduce the thickness of the rack 11 for this reason, instead of the hole 22 described above for the recess for collecting paper dust, instead of a hole penetrating downward, instead of a plate for recovery below the rack 11 It should be provided.

Further, other configurations of the present invention are not limited to the above-mentioned embodiment, and various modifications can be made as necessary.

[Effect of device]

As described above, according to the present invention, there is a practical effect that the influence of paper dust can be eliminated and the roll paper can be always cut with a small cutting load.

[Brief description of drawings]

1 to 3 show an embodiment of an automatic cutting device according to the present invention. FIG. 1 is an enlarged perspective view of a main part, and FIG.
The figure is a front view in which a part of the main part is broken, FIG. 3 is a front view of the main part of the idle gear, and FIGS. 4 and 5 show the proposed automatic cutting device. FIG. A front view and FIG. 5 are schematic plan views. 1 ... Roll paper, 3 ... Carriage, 9 ... Cutter, 11
…… Rack, 12A …… Pinion, 12B …… Idle gear,
20,23 …… Spur teeth, 21 …… Plate, 22 …… Hole, 24 …… Valley.

Claims (1)

[Scope of utility model registration request] 1. A rack is arranged in the width direction of a continuous roll paper so that each tooth thereof faces upward, and a carriage movable along the rack by driving means is arranged. In an automatic cutting device equipped with a disk-shaped cutter that is rotated by a carriage that moves along the rack via a gear that meshes with the rack, a flat plate portion between the teeth of the rack is used for storing paper dust. An automatic cutting device, characterized in that a concave portion is formed.