JPH0620616Y2 - Paper transport device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a paper piece transporting apparatus, and is used, for example, in a paper feeding piece apparatus for supplying a paper piece to a printing apparatus.

[Technical background of the invention] For example, a paper piece conveying device used for a paper feeding piece device for supplying a paper piece to a printing device has a small number of movable members and is
Moreover, it is required that there is no jam or disturbance of posture during transportation.

In order to meet such a requirement, the pinch roller is omitted from the ordinary conveying device composed of the conveying roller and the pinch roller rollingly contacting with the conveying roller, and instead, the pinch roller is brought into contact with the peripheral surface of the conveying roller. A configuration is known in which a guide member is provided to sandwich and feed a piece of paper.

Also, attach the waist to the piece of paper to prevent bending during transportation,
In order to prevent jams, there is a configuration in which a plurality of parts in the width direction of the paper piece are pressed from opposite directions along the conveyance path to make a vertical waist.

[Problems of background art] However, of the above-mentioned conventional configurations, the former achieves the purpose of space saving for the time being, but the contact force of the paper piece with respect to the transport roller tends to be insufficient, and thus the transport force is insufficient, and There is a problem that the piece of paper does not have a waist and the reliable conveyance of the piece of paper cannot be expected.

On the other hand, in the conventional configuration such as the above-mentioned latter, the paper piece has a vertical waist, which contributes to the straight movement of the paper piece as far as this is possible, but the path resistance also increases at the same time, and in some cases, the path resistance warps and obstructs the paper piece conveyance There is a drawback that it will be done.

[Object of the Invention] The present invention has been made in view of the above problems in the conventional technology, and has a space-saving and compact structure, and yet has good adhesion of the paper piece to the conveying roller,
An object of the present invention is to provide a paper piece conveying device in which a sufficient length of waist is provided at the conveying rollers and straightness is ensured so that a paper piece can be reliably conveyed.

[Summary of the Invention] In order to achieve the above object, the present invention provides a paper piece conveying apparatus comprising a conveying roller and a guide member for nipping and feeding a paper piece between the conveying rollers. A first portion that is provided so as to oppose the peripheral surface of the conveying roller and that generates a conveying force by sandwiching a piece of paper with the conveying roller, and the first portion are both widthwise end portions of the conveying roller. And a second portion that is connected in the vicinity of the transport roller so as to have a step toward the rotation center of the transport roller and that presses a portion of the piece of paper that is not in contact with the peripheral surface of the transport roller toward the rotation center of the transport roller. is there.

[Embodiment of the Invention] This embodiment is applied to a paper feeding device 3 provided at a paper feeding / ejecting port 1 of a printing device 1 as shown in the perspective view of FIG.

As shown in FIGS. 2 and 3, the sheet feeding device 3 has an arcuate support portion 7 that fits on a shaft 6 of a platen 5 provided on the printing device 1 on both side frames 4L and 4R. And has engaging claws 8L and 8R that are rotatably attached to the side frames 4L and 4R, and the coupling claws 8L and 8R engage with the shaft 6 fitted to the support part 7 and the printing device. It is fixed at 1.

The side frames 4L, 4R are made of, for example, an elastic material such as a metal plate, and in the vicinity of the supporting portion 7, a frame 9L as a positioning member supporting the shaft 6 of the platen 5,
A positioning protrusion 10 is provided which is in contact with the side surface of 9R and protrudes outward. The side frames 4L, 4R near the protrusion 10 are provided.
Is elastically deformed and positioned between the frames 9L and 9R.

As shown in FIGS. 1 and 4, paper feed trays 11L and 11R are attached to the rear of the side frames 4L and 4R. As shown in FIG. 2, these paper feed trays 11L and 11R are movable in the lateral direction along the shafts 12 and 13, and are rotatable about the shaft 13 by rotating the set lever 14. . In this rotatable state, the force of a spring (not shown) acts as a force for rotating the paper feed trays 11L and 11R upward.

Further, as shown in FIG. 5, U formed by bending the side frames 4L and 4R at the rear ends of the side frames 4L and 4R.
A character-shaped support portion 15 and a hole 16 are provided as shown in FIG. 2, and a paper feed stacker frame 17 having a shape as shown in FIG. 6 is detachably attached to the support portion 15 and the hole 16. There is.

This paper feed stacker frame 17 has a rotary shaft 17L at both ends,
17R, and the rotary shafts 17L and 17R fit into the hole 16.

In addition, the paper feed stacker frame 17 and the paper feed tray 11
A paper feed stacker is configured by L, 11R and the like.

Side plates 18L and 18R are attached to the side portions of the paper feed trays 11L and 11R as shown in FIGS. These side plates 18L and 18R are movable in the lateral direction along an angular axis 19 attached between the shaft 13 and the side frames 4L and 4R as shown in FIG. The side plates 18L, 1
8R moves together with the paper feed trays 11L and 11R with respect to the lateral movement, and is irrelevant to the rotation of the paper feed trays 11L and 11R about the shaft 13. The angular shaft 19 is connected to a motor (not shown).

Further, as shown in FIGS. 2 and 4, a paper feed roller 20 fitted into a square shaft 19 is rotatably attached to the side plates 18L and 18R.

A separation lever 22 is attached to the side plates 18L and 18R so as to be rotatable around a shaft 21. As shown in FIG. 4, the feed levers 11L and 11R are attached to the tip of the separating lever 22.
Front hanging portion 23 located at the front corner of the paper stored in
A and a separation claw 23B that is connected to the front hanging portion 23A and is located at the upper front corner of the paper piece are provided.

A front end regulation stopper 25 is provided on an L-shaped holding plate 24 provided in front of the paper feed trays 11L and 11R.
The leading end regulation stopper 25 contacts the leading ends of the pieces of paper stored in the paper feed trays 11L and 11R, and its contact surface is located on the paper side of the rotation locus P of the front hanging portion 23A as shown in FIG. It is shaped like a letter. That is, the upper half of the tip regulation stopper 5 is inclined forward. Note that in FIG. 7, Q indicates the rotation locus of the leading ends of the paper feed trays 11L and 11R.

A manual paper feed plate 26 as shown in FIGS. 1 and 2 is provided between the side frames 4L and 4R in front of the paper feed roller 20.
The sheet discharge holding plate 27 is attached with the manual insertion slit 28 formed. A paper output stacker frame 29 that holds the paper output is detachably attached above the manual paper feed plate 26.

The paper output stacker frame 29, the manual paper feed plate 26, the paper output holding plate 27, and the like constitute a paper output stacker.

A bearing 30 is attached to the paper discharge holding plate 27 as shown in FIG. 3, and is rotated by a motor and holds one end of a drive shaft 31 which is a component of the paper piece transporting device of the present invention. The other end of the drive shaft 31 is rotatably held by the side frame 4R. The drive shaft 31 is provided with three paper discharge rollers 32 as a conveyance roller which is a main part of the paper piece conveying device. As shown in FIG. 2, the peripheral surface of these paper discharge rollers 32 has a large frictional resistance with the paper piece, and the rear end of the paper piece fits into the paper sheet when it is sent to the paper discharge stacker side so that the paper sheet can be easily flipped off. Directional grooves 33 are provided. Further, as shown in FIG. 3, two discharging brushes 34 are electrically coupled and attached to the discharge holding plate 27 between the three discharge rollers 32.

A guide 35, which is a guide member made of a synthetic resin such as metal, plastic, or acrylic, is provided between the side frames 4L and 4R above the paper discharge roller 32.
It is rotatably attached by 6L and 36R.

As shown in FIG. 2, the guide 35 guides the paper piece, which is sent through the platen 5 of the printer 1 and the pinch roller 37 and printed by the print head 38, onto the paper discharge roller 32. Side ribs 39 forming the second part and internal ribs 40 forming the first part shown in FIGS. 8 and 9 are provided.

As shown in FIG. 10, the side ribs 39 are provided on the respective discharge rollers 32.
And the lower end thereof slightly protrudes from the peripheral surface of the paper discharge roller 32 toward the drive shaft 31 side. That is, the internal ribs 40 and the side ribs 39 have steps as shown in FIG.

Further, the internal rib 40 is located facing the peripheral surface of each paper discharge roller 32, and is provided with a concave portion 42 which comes into contact with this peripheral surface via a paper piece 41 on which printing processing is performed.

In such a configuration, when the paper feeding device 3 is attached to the paper feeding / ejection port 2 of the printing device 1, the side frames 4L, 4R
Is elastically deformed and inserted between the frames 9L and 9R of the paper feed / discharge port 2. Then, the protrusions 10 of the side frames 4L, 4R come into contact with the side surfaces of the frames 9L, 9R and are positioned. When the coupling claws 8L and 8R are engaged with the shaft 6,
The paper feeding device 3 is fixed to the printing device 1.

Next, when the paper pieces are set on the paper feed trays 11L and 11R, the front ends of the paper pieces come into contact with the front end regulation stopper 25. Then, when the set lever 14 is rotated, the paper feed trays 11L and 11R are rotated upward along the rotation locus Q of FIG. As a result, the separation claw 23B is moved to the paper feed stand 11L,
The paper piece of 11R rises and is pressed against the paper feed roller 20.

In such a state, when a print command is input to the printer 1 from a word processor, a computer or the like, the square shaft 19 rotates and the paper feed roller 20 pushes out a piece of paper. At that time, both front ends of the paper piece are caught by the separation claws 23B and bent, and when the paper pieces bounce beyond a certain limit, they are separated into one sheet and supplied between the platen 5 and the pinch roller 37 of the printer 1.

When the platen 5 is wrapped around and printed, the guide 3
The paper piece enters the inside from the front of 5, and is fed between the paper discharge roller 32 and the side rib 39 and the internal rib 40 of the guide 35 which constitute the paper piece conveying device. At that time, the guide 35
The weight exerts a pressure on the paper piece, and the side ribs 39 and the internal ribs 40 allow the paper piece to bend. Then, the delivered paper pieces are stored in the paper output stacker.

In this way, as the number of paper sheets in the paper feed stacker decreases, the paper feed trays 11L and 11R rotate about the shaft 13 according to the locus Q as shown in FIG. Further, the front hanging portion 23A of the separating lever 22 rotates according to the locus P.

As described above, according to this embodiment, the guides 35 are provided in parallel with the plurality of paper discharge rollers 32 attached to the shaft 31, and inside the guides 35, the guide rollers 35 are located on both sides of each paper discharge roller 32. Since the side ribs 39 that are located on the axial side of the peripheral surface of the paper discharge roller 32 are provided and the internal ribs 40 that are in contact with the peripheral surface of the paper discharge roller 32 are provided, the paper discharge roller 32 is formed by the lower portion of the side ribs 39. The upper paper is pressed by both sides of the paper discharge roller 32, and the paper on the peripheral surface of the paper discharge roller 32 is pressed against the peripheral surface by the internal ribs 40. For this reason, the paper is pressed against the peripheral surface from both edges of the paper discharge roller 32, the friction between the paper discharge roller 32 and the paper is increased, and the paper can be reliably conveyed.

Further, since the side ribs 39 and the internal lobs 40 bend the paper, the paper does not get stiff, the paper does not curl, and the paper is not stored upside down in the paper discharge stacker.

Furthermore, without making the guide roller face the discharge roller 32,
The paper discharge roller 32 is provided on the side that contacts the back side of the paper, and the guide 3 formed of metal or synthetic resin on the side that contacts the front side.
Since No. 5 is provided, at least the front surface side of the paper piece does not become dirty even if it is used for a long time.

Further, since the guide 35 is pivotally supported and rotatable, the paper piece can be pressed against the paper discharge roller 32 by the weight of the guide. Also, even if the thickness of the paper piece used changes, the guide 3
Only by slightly changing the rotation amount of 5, the sheet can be reliably discharged regardless of the thickness of the sheet.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment.

For example, although the guide 35 presses the paper against the paper discharge roller 32 by its own weight, it may be positively pressed by using a spring or the like. Further, although the guide is shown to be rotatable around the shafts 36L and 36R, it may be fixed.
Furthermore, although there are two internal ribs 40,
You can get one, three, or any number. Further, the shape, thickness, length, etc. of the side ribs 39 and the internal ribs 40 can be freely changed.

Further, in the above-described embodiment, as shown in FIG. 10, the side ribs 39 and the internal ribs 40 are not provided on the guide 35, and a step 44 is formed on the portion of the guide 43 which is in contact with the peripheral surface of the discharge roller 32 as shown in FIG. May be provided.

[Advantage of the Invention] According to the present invention, in a paper piece conveying device including a conveying roller and a guide member for nipping and feeding a paper piece between the conveying rollers, the guide member is provided on a peripheral surface of the conveying roller. A first portion, which is provided to face each other and sandwiches a piece of paper between the sheet and the conveying roller to generate a conveying force, and the first portion is located at the center of rotation of the conveying roller near both ends in the width direction of the conveying roller. Since it is connected with a step toward it, and the portion of the piece of paper that is not in contact with the peripheral surface of the conveying roller is composed of the second portion that presses toward the rotation center side of the conveying roller, it is a space-saving and compact structure. In addition, the adhesion of the piece of paper to the conveying roller is ensured, and a sufficient vertical waist is ensured at the conveying roller to ensure the straightness of the piece of paper, and it is possible to reliably convey the piece of paper without causing a conveyance error or conveyance disturbance.

[Brief description of drawings]

FIG. 1 is a perspective view of a printing apparatus including a paper feeding device having a paper piece conveying device according to the present invention, and FIG. 2 is a longitudinal sectional view of the paper feeding device.
FIG. 3 is a front view of the paper feeding device, FIG. 4 is a plan view of the periphery of the paper feeding stand of the paper feeding device, FIG. 5 is a structural diagram of a paper feeding stacker frame mounting portion, and FIG. 6 is a drawing of the paper feeding stacker frame. Front view, No. 7
The figure is a motion explanatory view of the tip regulation stopper, FIG. 8 and FIG.
The drawing is an explanatory view of the side ribs (second portion) and the internal ribs (first portion) provided on the guide member, FIG. 10 is an explanatory view of the configuration and operation of the paper piece conveying device, and FIG. 11 is a paper piece. It is drawing which shows the other structure of a conveying apparatus. 1 ... Printing device, 2 ... Paper feed / discharge port, 3 ... Paper feeding device, 4
L, 4R ... Side frame, 5 ... Platen, 9L, 9
R: frame, 10: positioning protrusion, 11L, 11
R: paper feed table, 15: support, 16: hole, 17:
Paper feed stacker frame, 17L, 17R ... Rotating shaft, 2
0 ... Paper feed roller, 22 ... Separation lever, 23A ... Front hanging portion, 23B ... Separation claw, 24 ... Holding plate, 25 ...
Tip regulation stopper, 26 ... Manual paper feed plate, 27 ... Ejection holding plate, 29 ... Ejection stacker frame, 31 ... Drive shaft, 32 ... Ejection roller (conveying roller of sheet conveying device), 34 ... ... Static elimination brush, 35 ... Guide (guide member), 39 ... Side rib (second portion), 40 ... Internal rib (first portion), 42 ... Recess, 43 ... Guide,
44 ... Step

Claims (3)

[Scope of utility model registration request] 1. A paper piece conveying apparatus comprising a conveying roller and a guide member for nipping and feeding a paper piece between the conveying rollers, wherein the guide member opposes a peripheral surface of the conveying roller. A first portion that is provided and that generates a conveying force by sandwiching a piece of paper with the conveying roller, and the first portion are located at the center of rotation of the conveying roller near both ends in the width direction of the conveying roller. A second portion that is connected with a step toward it and that presses a portion of the piece of paper that is not in contact with the peripheral surface of the conveying roller toward the rotation center side of the conveying roller, and the first portion and the second portion. A paper piece conveying device characterized in that the part and the part are formed integrally. 2. A utility model in which any one of the first and second portions of the guide member, or both of the portions in contact with the paper piece, are constituted by a single row or a plurality of rows of ribs extending in the transport direction. The paper piece conveying device according to claim 1. 3. The paper piece conveying apparatus according to claim 1, wherein the guide member is provided with a swing support shaft for allowing the guide member to come into contact with and separate from the conveying roller.