JPH0425397A - Sheet material cutting device and recording device having sheet material cutting device - Google Patents

Abstract

PURPOSE:To realize a low costing with the number of parts being reduced and to improve workability with the number of assembly stages being curtailed, by connecting one part of a moving cut mean having a moving blade to a driving force transmitting mean. CONSTITUTION:Driving force transmission means (7h, 7i, 7j, 7k1, 7k2, 7n) for transmitting a driving force from a driving source 7l and Moving cut means (7c, 7f, 7g) having a moving blade 7c which is rotated centering around a rotating shaft 7g with a driving force being transmitted from a driving force transmitting mean, are provided. One part 7g of this moving cut mean is connected to the driving force transmission mean. Consequently, a low costing is realized with the number of parts being reduced and also the workability can be improved with the number of assembly stages being curtailed.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention mainly relates to a sheet material cutting device for cutting a sheet material after recording, and a recording apparatus having the sheet material cutting device.

<Prior Art> Conventionally, in recording devices such as facsimile machines and copying machines, roll paper, which is a sheet material wound into a roll, has been used as a recording medium. In a recording apparatus using this roll paper, a sheet material cutting device is used to cut the sheet material after recording from the trailing edge of the image.

For example, the recording system of a facsimile machine is equipped with a sheet material cutting device for cutting the sheet material after recording, as shown in FIG.

In FIG. 6, a fixed blade 51 and a movable blade 52 are supported along the longitudinal direction of a support frame 50 having a U-shaped cross section so as to face each other substantially parallel to each other. The fixed blade 51 is attached to a fixed shaft 51b via a holding member 51a, and the fixed shaft 51b is pivotally supported by the support frame 50. Further, the movable blade 52 is attached to a rotation shaft 52b via a holding member 52a, and the rotation shaft 52b is pivotally supported by the support frame 50.

The movable blade 52 is configured to swing around a rotation shaft 52b, and the free end of the rotation shaft 52b is connected to a lever 53 through the support frame 50.

A drive shaft 52c for swinging the movable blade 52 is connected to the free end side of the movable blade 52 by caulking, screwing, or the like. The other end of this drive shaft 52c is connected to the lever 53, and this lever 53 is configured to swing in the directions of arrows G and G' about the rotation shaft 52b. A driving means (not shown) is connected to the lever 53, and the lever 53 is connected to a rotating shaft 52.
By swinging around b in the directions of arrows G and G',
The recording sheet 54 is cut by swinging the movable blade 52 and the holding member 52a in the directions of 2 and 2 via the drive shaft 52c, and rubbing the movable blade 52 against the fixed blade 51.

<Problems to be Solved by the Invention> However, in the above configuration, a separate member from the movable blade 52 is used for the drive shaft 52C, and furthermore, the movable blade 52
Since the connection was made by caulking or screwing, there was a risk of high costs.

In addition, when connecting the drive shaft 52c to the movable blade 52 by caulking, it is necessary to perform step cutting or chamfering for caulking, and when connecting the drive shaft 52c to the movable blade 52 by screwing, , it is necessary to perform thread cutting on the drive shaft 52c and the movable blade 52, and in either case, there is a risk that the number of assembly steps will increase and work efficiency will decrease.

An object of the present invention is to solve the problems of the prior art described above, and to reduce the number of parts by connecting a part of the movable cutting means to the driving force transmitting means, thereby realizing a ring with reduced costs and improved assembly workability. An object of the present invention is to provide a sheet material cutting device and a recording device having the sheet material cutting device.

<Means for Solving the Problems> A typical means for solving the problems of the prior art described above and applied to the embodiments described below is that in a sheet material cutting device, a fixed blade having a long axis is moved. A sheet material cutting device that cuts sheet materials by rubbing blades together includes a driving source, a driving force transmitting means for transmitting driving force from the driving source, and a driving force transmitting means for transmitting driving force from the driving force transmitting means. a movable cutting means having a movable blade that is transmitted and rotates around a rotation axis;
It is characterized in that a part of the movable cutting means is connected to the driving force transmitting means.

The recording apparatus also includes a recording means for recording an image on a sheet material according to recording information, a conveyance means for conveying the sheet material, and a conveyance means for cutting the sorted material after recording. The present invention is characterized by having a sheet material cutting device and a discharge means for discharging the cut sheet material from the device.

<Operation> According to the above configuration, a part of the movable cutting means having a movable blade is connected to the driving force transmission means, thereby reducing the number of parts and lowering costs, and reducing the number of assembly steps. Workability can be improved.

<Example> Hereinafter, an example of a sheet material cutting device to which the present invention is applied and a recording apparatus having the sheet material cutting device will be described.

FIG. 2 is a cross-sectional explanatory view showing a schematic configuration of the facsimile machine, and FIG. 2 is a perspective explanatory view of the sheet material cutting device.

First, a schematic configuration of a facsimile machine to which the present invention is applied will be explained with reference to FIG.

In FIG. 1, the facsimile apparatus is comprised of a recording system B having a decurling mechanism A, an original reading system C, and a power supply section.

The recording system B has a lid 2 attached to the main body 1 of the apparatus so as to be openable and closable about a shaft 3, and the lid 2 is configured to be locked to the main body 1 of the apparatus by a click mechanism (not shown). Further, a roll holder 4 is built into the apparatus main body B, and a sheet roll 5a in which a sheet material 5 that develops color by heat is wound into a roll is loaded in the roll holder 4. The sheet material 5 is conveyed to the recording means by a platen roller 6a constituting a conveyance means, and at this time, it is passed through a decurling mechanism A and bent in a direction opposite to the curl direction to correct the curl.

An image is formed on the curl-corrected sheet material 5 according to the recorded information by a recording head 6 serving as a recording means, and the sheet material 5 after recording is cut from the trailing edge of the image by a sheet material cutting device 7. The paper is then conveyed by a discharge roller 8 constituting a discharge means and discharged to a discharge stacker 9.

Next, the document reading system C sets a plurality of documents 11 on the document mounting table 10 formed on the upper surface of the lid body 2, and starts the reading operation. Several sheets of originals 11 are sequentially conveyed.

The original 11 is transported by a preliminary transport roller 12a and a pressing member 12b in pressure contact therewith, and is separated one by one by a separation roller 13a and a pressing member 13b in pressure contact therewith. While the document is being transported between the pair of transport rollers 14a and 14b and the pair of transport rollers 15a and 15b, light is irradiated from the light source 16, and the reflected light from the surface of the document is reflected by the mirrors 17a and 17b.

17c and a lens 18, the image is formed on a photoelectric conversion element 19 such as a CCD and converted into an electric signal. This electrical signal is configured to be transmitted to its own recording system B in the copy mode, and to the recording system of another machine in the facsimile mode.

Next, the sheet material cutting device 7 applied to the facsimile machine configured as described above will be explained with reference to FIG. 2.

As shown in FIG. 2, the sheet material cutting device 7 is supported by a support frame 7a having a U-shaped cross section so that a fixed blade 7b and a movable blade 7C face each other substantially in parallel along the longitudinal direction of the support frame 7a. ing. The fixed blade 7b is attached to the fixed shaft 7 via a holding member 7d.
The fixed shaft 7e attached to the support frame 7a is pivotally supported by the support frame 7a. Further, the movable blade 7C is attached to a rotation shaft 7g via a holding member 7f, and the rotation shaft 7g is pivotally supported by the support frame 7a.

The movable blade 7c, the holding member 7f, and the rotating shaft 7g constitute a movable cutting means.

The free end side of the rotating shaft 7g is inserted through the support frame 7a,
The movable blade 7C is fitted into a hole 7h provided at one end (left side in the drawing) of a drive plate 7h having a dogleg-shaped cross section for swinging the movable blade 7C. Further, a part of the holding member 7f is attached to the drive plate 7h.
It fits into hole 1ht. Therefore, by swinging the drive plate 7h in the directions of the arrows G and G' about the rotation shaft 7g, the movable blade 7C held by the holding member 7f is configured to swing in the direction of the arrow KK'. ing. and,
At this time, the blade edges of the movable blade 7C and the fixed blade 7b rub against each other to cut the sheet material 5.

The other end of the drive plate 7h (on the right side of the drawing) has a connecting pin 7hi.
This connecting pin 7h is fitted into a hole 7++ provided near the end of the connecting rod 71 and is rotatably connected. A hole 7i2 provided near the other end (right side in the drawing) of the connecting rod 7I is fitted into a boss portion 7''1 eccentrically provided on the side surface of the large-diameter gear 7j and is rotatably connected. There is. The large-diameter gear 7j and the boss portion 7j+ are integrally molded from a molding material such as a resin having appropriate elasticity, such as polyacetal.

Further, the large diameter gear 7j has two stages of large and small intermediate gears 7 provided coaxially, and a small diameter intermediate gear 1 of 1 kHz,
The large-diameter intermediate gear 7kz meshes with a motor gear 7n coaxially attached to the rotating shaft 7m of a motor 7N, which is a drive source.

The drive plate 7h, the connecting rod 71. Large diameter gear 7j, intermediate gear 7 +, 7kg, motor gear 7n, motor 71
It constitutes a driving force transmitting means for transmitting the driving force from.

That is, the motor 7! When the motor gear 7n is rotated in the direction of arrow E in the figure, intermediate gears 7k+, 7
kg, the large diameter gear 7j rotates in the direction of arrow F in the figure. The drive plate 7h is connected via a connecting rod 71 connected to a boss portion 7L eccentrically provided on the side surface of the large diameter gear 7j.
is swung around the rotation axis 7m in the direction of the force indicated by arrows c and c'.

At this time, since a part of the holding member 7f is fitted to the drive plate 7h, the movable blade 7c swings in the direction of the K' force as shown by the arrow and rubs against the fixed blade 7b, thereby cutting the sheet material 5. I can do it.

According to the above configuration, the holding member 7f and the driving plate 7h, which have conventionally been connected using a separate member, can be connected to the driving plate 7h by a part of the holding member 7f for holding the movable blade 7c. This makes it possible to reduce the number of parts and lower costs, as well as reduce the number of assembly steps and improve workability.

Although the above embodiment describes a thin blade type sheet material cutting device 7 in which the fixed blade 7b and the movable blade 7C are bonded and held by the holding members 7d and 7f, a sheet material cutting device using a thick blade may also have a movable blade. A similar effect can be obtained by extending a portion of the blade and connecting it to the drive plate 7h.

Furthermore, although the above embodiment has been described with reference to the case where it is applied to a facsimile machine as a recording device, it is also possible to apply it to other devices, such as a copying machine.

Other Embodiments Next, other embodiments of the sheet material cutting device will be described with reference to FIGS. 3 to 5.

The general configuration of the sheet material cutting device is the same as that of the previous embodiment.

First, in FIG. 3, in this embodiment, a part of the driving force transmission means is connected to the movable cutting means. That is,
A connecting bottle 7p is integrally provided on a part of the drive plate 7h, and is connected to a hole 7f provided in a holding member 7f that holds the movable blade 7C.
It is designed to fit into 1.

Next, referring to FIG. 4, in this embodiment, the rotating shaft of the movable cutting means is constituted by a part of the movable cutting means.

That is, a rotation shaft is formed by a part of the holding member 7f for holding the movable blade 7c. Part of the holding member 7f? A bearing 7a provided in the support frame 7a by extending rt,
is pushed through and fitted into a hole 1 ha provided in the drive plate 7h. In addition, 7q is the hole 7f1 of the holding member 7f and the drive plate 7h.
This is a drive shaft that connects the two by fitting into the hole 7hs.

Further, in FIG. 5, in this embodiment, the rotating shaft of the movable cutting means is constituted by a part of the driving force transmitting means. That is, a connecting pin 7r is provided protrudingly from a part of the drive plate 7h, and is inserted through the support frame 7a and fitted into the hole 7f of the holding member 7f, thereby forming a rotation axis of the holding member 7f. be.

With each of the above configurations, it is possible to reduce the number of parts and obtain the same effects as in the embodiments described above.

<Effects of the Invention> As described above, the present invention provides the following advantages by connecting a part of the movable cutting means including the movable blade to the driving force transmission means, etc.
The number of parts can be reduced to reduce costs, and the number of assembly steps can be reduced to improve work efficiency.

Further, by integrating the parts using the driving force transmission means or the movable cutting means, the accuracy of the parts can be improved, and the positional accuracy of the movable blade when it is on standby or when the cutting operation is finished can also be improved.

Furthermore, in the recording apparatus, the conveyance path of the sheet material after recording can be stabilized, and the cutting performance can be improved.

[Brief explanation of the drawing]

FIG. 1 is an overall explanatory diagram of a facsimile machine according to an embodiment of the present invention, FIG. 2 is a perspective explanatory diagram of a sheet material cutting device, FIGS. 3 to 5 are explanatory diagrams of the other side, and FIG. The figure is an explanatory diagram of a conventional example. A is the decurling mechanism, B is the recording system, C is the document reading system, D is the power supply unit, 1 is the main body of the device, 2 is the lid, 4 is the roll holder, 5 is the cartridge material, 5a is the sheet roll, 6 is the recording head , 6a is a platen roller, 7 is a sheet material cutting device, 7a
is a support frame, 7b is a fixed blade, 7c is a movable blade, 7d and 7f are holding members, 7e is a fixed shaft, 7g is a rotating shaft, 7h is a drive plate, 71 is a connecting rod, 7j is a large diameter gear, 1 ,, 7kz is the intermediate gear, 71 is the motor, 7m is the rotating shaft, 7n is the motor gear, ? p, 7r are connecting bins, 7q is a drive shaft, 8 is a discharge roller, 9 is a discharge stacker, 10 is a document placement table, 11 is a document, 12a is a preliminary conveyance roller, 12b. 13b is a pressure contact member, 13a is a separation roller, 14a, 14
b15a, 15b are conveyor roller pairs, 16 is a light source, 17a
, 17b and 17c are mirrors, 18 is a lens, and 19 is a photoelectric conversion element.

Claims (5)

[Claims] (1) In a sheet material cutting device that cuts sheet material by rubbing a movable blade against a fixed blade in the form of a long axis, the device includes a driving source and a driving force transmission means for transmitting driving force from the driving source. and a movable cutting means having a movable blade that rotates around a rotation axis by receiving a driving force transmitted from the driving force transmitting means, the movable cutting means being connected to the driving force transmitting means by a part of the movable cutting means. A sheet material cutting device characterized by: (2) The sheet material cutting device according to claim 1, wherein a portion of the driving force transmission means is connected to the movable cutting means. (3) The sheet material cutting device according to claim 1, wherein the rotating shaft of the movable cutting means is constituted by a part of the movable cutting means. (4) The sheet material cutting device according to claim (1), wherein the rotating shaft of the movable cutting means is constituted by a part of the driving force transmitting means. (5) A recording device for recording an image on a sheet material according to recording information, a conveying device for conveying the sheet material, and a method for cutting the sheet material after recording, according to claim (1). A recording device comprising: a sheet material cutting device; and a discharge means for discharging the cut sheet material out of the device.