JPS6387437A - Feed device - Google Patents

Abstract

PURPOSE:To eliminate an elevating mechanism, to simplify a mechanism, and to reduce the size of a device, by providing a feed means, feeding sheets, placed on a placing part, in order, from a lowermost sheet. CONSTITUTION:A feed device 1 has a placing part to laminate and place sheets 10 thereon, and is provided on the lower part side with a kick roller 2 serving as a feed means. Through rotation of the kick roller 2, sheets 10 under a laminated state are fed from a lowermost sheet, and is taken out by means of feed roller 3 serving as a take-out means. A separation roller 4 is brought into roll contact with the upper part side of the feed roller 3, the separation roller being rotated in a reverse direction to that of the feed roller 3 to prevent taking out two sheets 10 at one time. The sheets 10 taken out by means of the feed roller 3 are conveyed along a conveyance passage 42, and aligning rollers 5 and 6, serving as a position adjusting means, and intermediate rollers 7 and 8, serving as a feed means, are disposed to the conveyance passage 42 along the conveyance direction of the sheets 10.

Description

[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) The present invention takes out a large number of stacked paper sheets such as envelopes one by one and sequentially feeds them into a printer, for example. This invention relates to a feeding device for feeding.

(Prior Art) As this type of feeding device, an elevator type feeding device is known. In this elevator system, a large number of sheets are stacked on a lifting plate, and a take-out roller is brought into contact with the topmost sheet of the stack, and the rotation of the take-out roller causes the sheets to be The sheets are taken out and fed one by one in sequence.

(Bubble point to be solved by the invention) However, in the above-mentioned elevator system, the elevating plate is raised every time a predetermined amount of paper sheets are taken out, and when the paper sheets are placed, the elevating plate is raised and lowered. The board must be lowered,
There were problems such as mechanical complexity, large size, and high cost.

[Structure of the Invention] (Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention includes a placing section for placing stacked paper sheets, and a device for placing stacked paper sheets on the placing section. a delivery means for sending out the paper sheets from the lowest one, a take-out platform for taking out the paper sheets sent out one by one by the delivery means, and a sorter for arranging the paper sheets taken out by the take-out means. The apparatus is characterized by comprising: a positioning means; and a feeding means for sending the paper sheets arranged by the arrangement means to a feeding section.

[Function] By using the unit, a large amount of paper sheets can be fed with a simple configuration without using an elevating mechanism or the like.

(Example) The present invention will be described below with reference to an example shown in the drawings. In the figure, 100 is the printer main body, and this printer main body 10
The feeding device 1 is connected to the manual paper feeding port 101 of No. 0 . This feeding device 1 has a stacking section 41 for stacking paper sheets 10 such as envelopes, and a kick roller 2 serving as a feeding means is rotatably mounted on the lower side of the stacking section 41. It is provided. By rotating the kick roller 2 in the direction of the arrow, the stacked paper sheets 10 are sent out starting from the lowest one, and are taken out by the feed roller 3 serving as a taking out means. A separation roller 4 is rolled into contact with the upper side of the feed roller 3, and this separation roller 4 is rotated in the opposite direction to the feed roller 3 to prevent the paper sheets 10 from being taken in duplicate. The paper sheets 10 taken out by the feed roller 3 are conveyed along a conveyance path 42, and this conveyance path 42 includes aligning rollers 5, 6 as aligning means along the conveyance direction of the paper sheets 10. Intermediate rollers 7.8 are provided as feed means.

Further, a switch 1 is provided between the feed roller 3 and the aligning roller 5 to detect jamming of paper sheets 10, etc.
1 is provided, and furthermore, paper sheets 10 are provided in the above-mentioned placement section 41.
A switch 12 is provided to detect the presence or absence of.... In addition, 13 in the figure is a switch that detects the opening and closing of the door cover 14.
．． The feeding operation is stopped when the opening of the opening is detected.

Next, each part of the above-mentioned feeding device will be explained in detail.

FIGS. 2(a) and 2(b) show the drive mechanism on the light side of the feeding device 1, in which numeral 51 is a motor and 52 is a boot attached to the motor shaft 51a. Drive is transmitted from the pulley 52 to the gear 56 of the feed roller 3 via the belt 53 and the geared pulley 54 and gear 55 to reduce the speed. The shaft 80 of the feed roller 3 has a gear 56 and a ratchet 57. A spring clutch 59 and an arbor 58 are provided, and the paper feed solenoid 63 is turned off.
At this time, the flapper 81 of the paper feed solenoid 63 is engaged with the ratchet 57 by the spring 93, and the drive is not transmitted to the feed roller shaft 80, and the gear 5
Only 6 rotates.

Further, when the paper feed solenoid 63 is turned on, the flapper 81 is attracted by the paper feed solenoid 63 and separated from the ratchet 57, and the drive is driven by the gear 56, spring clutch 59. Feed roller shaft 80 through arbor 58
is transmitted to rotate the feed roller 3.

On the other hand, drive is transmitted from the gear 56 to the gear 61 of the aligning roller (lower) 5 via the intermediate gear 60, and further from this gear 61 to the idle gear 62 of the intermediate shaft 81 to the left side drive mechanism described later. Communicating. At this time, the drive of the shaft 82 of the aligning roller (lower) 5 is transmitted to the feed roller shaft 8 mentioned above.
0, and the aligning solenoid 64 transfers the drive. The drive transmitted to the left side by the gear 62 and shaft 81 is transmitted to the ladder wheel 77 and the ladder chain 79, as shown in FIGS. 3(a) and 3(b).
and is transmitted to the shaft 83 of the intermediate roller luff by the rudder wheel 78.

Moreover, the roller 8 shown in FIG. 1 consists of four pieces, and the roller 8 shown in FIG.
As shown in a) and (b), the shaft portion 8a of the roller 8 is attached to the base 87 in a direction parallel to the traveling direction of the paper sheet 10 (arrow A).
) and supported by the leaf spring 9 via the base 87 in a direction perpendicular to the traveling direction, the roller 8 is driven by the intermediate roller 7. Therefore, the intermediate roller 8 always rotates 1ji while the motor 51 is rotating at the same time.

Moreover, when the -1- paper feed solenoid 63 is turned on, the shaft 80, the gears 65, 66, 67 and the ladder wheel 68
First, the drive is transmitted to the kick roller shaft 86 by the ladder wheel 70 having a built-in ladder chain 69 and one-way clutch 71. At this time, the one-way clutch 71 is arranged so as to rotate idly with respect to the traveling direction of the paper sheets 10. At the same time, the separation roller shaft 85 is driven via the ladder chain 72 and ladder wheel 73.

When the aligning solenoid 64 is turned on, the shaft 82 of the aligning roller (lower) 5 is driven and transmitted to the aligning roller (upper) 6 via the gears 74, 76 and the one-way clutch 75. As shown in FIG. 5, the aligning roller (lower) 5 has a structure in which six plastic roller parts 5a are combined, and the roller parts 5a... have no rotational force due to the drive of the shaft 82 only. . As shown in Fig. 6, the aligning roller (upper) 6 is made of rubber (for example, CR rubber, etc.), and is pressed against the aligning (lower) roller 5 by a coil spring or the like, and once driven as described above. It is transmitted to the aligning roller (upper) 6, and the roller portions 5a of the aligning roller (lower) 5 are driven to rotate. Since the one-way clutch 75 is installed so as to rotate idly with respect to the traveling direction of the paper sheets 10, the force of the pair of aligning rollers 5 and 6 to send the paper sheets 10 in the traveling direction is applied by a spring or the like. It is large in size and can be easily pulled out from the direction of movement of the paper sheet 10 even when the paper sheet 10 is held between the pair of aligning rollers 5 and 6.

Next, the kick roller 2 will be explained.

As shown in FIGS. 7 and 8, this kick roller 2 consists of two hole-shaped rollers 2a, 2a, and its cross section ranges from a flower leaf type with an arc at the apex of a regular octagon. , has a shape in which an arc on a certain diagonal line is missing, and gives vibration to the stacked paper sheets 10 from the bottom side thereof, and increases the force of feeding them to the feed roller 3. In addition, due to this shape, the number of times the paper sheet 10 hits the bottom surface is smaller than that of a regular octagonal roller, which also contributes to reducing the torque.The control will be described later, but the paper sheet 10 is sent out by the aligning rollers 5 and 6. When the kick roller 2. Feed roller 3, separation roller 4
are stopped, but since the kick roller 2 and the two-way roller 3 are engaged with the one-way clutch 71.3b, they rotate in the advancing direction. At this time, when the kick roller 2 comes to the lower part 2a, it stops contacting the paper sheet 10 and stops moving at that position, so that feeding starts from the same position at any time. The shape of the kick roller 2 does not have to be as shown in FIG. 8; it may be any shape that does not have a regular polygonal vertex and has a plane of symmetry that passes through the center of the shaft axis. If the shape has n-gonal (n-3 or more) vertices, vibrations will be applied n times to the rotation of the roller, but if n is 6 or more, the amplitude of the vibration will become small. Furthermore, if the shape is not a regular polygon and has a plane of symmetry, the next sheet feeding will vary depending on the position where the kick roller 2 is stopped. CR rubber is used as the rubber material constituting the kick roller 2. The rubber material does not have much to do with it, but when it comes to rubber hardness, if it is low, the friction coefficient will be high, but it will also cause a lot of wear. If it is high, the friction coefficient will be low, but the life will be extended, so it is necessary to choose an appropriate hardness In the present invention, approximately 43@ is used.

FIG. 9 is a diagram showing a part of the feed roller 3, including a rubber part 3a, a holder part 3C, and a one-way clutch 3b.
Each built-in one-way clutch 3b is installed so as to rotate idly with respect to the advancing direction of the envelope 10.

FIG. 10 shows the separation roller 4, which is connected to a shaft 87 and constantly rotates in the opposite direction to the direction in which the paper sheet 10 travels. Although rubber is used as the material for the separation roller 4 in the present invention, there are no particular restrictions on the material, and in order to secure the nip width with the separation roller 4, it is preferable to use a material with as low hardness as possible, such as urethane. Materials such as foam may also be used, but the hardness must be selected with longevity in mind.

Next, the mounting section 41 for the biped paper sheets 10 will be explained. In FIG. 1, 16 is a wire for weighting the stacked paper sheets 10. Thick paper sheets 10, which are relatively easily deformed such as envelopes, cannot be straightened by their own weight alone, and especially the leading edge deforms into a wave shape. In such a case, the paper is likely to get caught on the partition plate 17 provided in front of the feed roller 3 and the separation roller 4, causing a feeding error.

In addition, 15 is a pair of guide plates for the filter paper sheets 10 arranged in such a manner that when one guide plate 15 is moved, the other guide plate 15 is also moved by the rack 19 and pinion 20.

Next, the configuration of the housing of the feeding device 1 will be explained using FIG. 1.

The frame 29 of the feeding device 1 is surrounded by an under cover 26, a cover 22, and a door cover 14, and a PCC board 7 for controlling the feeding device 1 is attached to the under force /<-26. There is. In addition, the cover door 14 is welded with a plate material 30 that turns the door 5W13 0N10FF, and a torsion coil 29 from the frame 21 prevents the cover door 14 from falling even if the hand is released when the door is opened beyond a certain angle. The opening/closing fulcrum 31 is located on the side closer to the printer main body 100. A pair of manual feed guides 28 are mounted on the rack 19 on the cover door 14.
and is movably attached via a pinion 20,
The same conveyance path as that for feeding the paper sheets 10 stacked on the feeding device 1 is used.

Therefore, when feeding the paper sheets 10 stacked on the feeding device 1 to the printer main body 100, the printer main body 100
The power is turned on, thereby supplying power to the feeding device 1, and after confirming whether the various switching/resetting conditions are normal, the motor 51 is turned on in response to a start signal. After detecting that the rotation speed of the motor 51 is locked, the paper feed solenoid 63 is turned ON, and the feed roller 3, kick roller 2, and separation roller 4 are rotated via five spring clutches to remove the stacked paper. The bottom one of the leaves 10 is sent out, and the paper leaf detection switch 11 is turned off.
When the paper feed solenoid 63 is turned OFF, the aligning solenoid 64 is turned ON, and the spring clutch 59 is turned OFF.
After the paper sheet 10 is conveyed by driving the aligning rollers 5 and 6 via the intermediate roller 7.8, which is rotated at the same time as the motor 51 is turned on, it is fed to the printer main body 100.

[Effects of the Invention] As explained above, according to the present invention, the stacked paper sheets are taken out and fed one by one starting from the lowest one, so that the paper sheets are This eliminates the need for an elevating mechanism for elevating and lowering the device, resulting in mechanical simplification, miniaturization, and cost reduction.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a schematic configuration diagram showing a feeding device, and FIG. 2(a) is a side view showing a drive mechanism on the light side of the feeding device. 3(b) is a top view, FIG. 3(a) is a side view showing the drive mechanism on the left side, FIG. 4(b) is a top view, and FIG. 4(a) is a perspective view showing the supporting state of the intermediate roller. Fig. 5 is a plan view partially showing the aligning roller (bottom), Fig. 6 is a plan view showing the aligning roller (top), Fig. 7 The figure is a perspective view showing the kick roller, FIG. 8 is a sectional view thereof, and FIG. 9 is a partially sectional plan view showing the feed roller.
FIG. 10 is a partially sectional plan view of the separation roller. 2...Kick roller (delivery means), 3...Feed roller (take-out means), registration roller (alignment means),
Intermediate roller (feeding means), 41... mounting section. . Applicant's agent Patent attorney Takehiko Suzue (a) (b) Figure 4 Figure 5 Figure 6 Figure 9 Figure 10

Claims (7)

[Claims] (1) A loading section on which stacked paper sheets are placed, a delivery means for sending out the paper sheets placed on the stacking section starting from the lowest one, and paper sheets sent out by this delivery means. a take-out means for taking out the sheets one by one, a arranging means for arranging the sheets taken out by the arranging means, and a feeding means for sending the sheets arranged by the arranging means to a feeding section. A feeding device comprising: (2) The feeding device according to claim 1, wherein the feeding means is a polygon that is not a regular polygon, and has an arc at its apex. (3) The feeding device according to claim 1, wherein the capacity of the placing section is such that a maximum of about 100 envelopes can be placed thereon. (4) The feeding device according to claim 1, wherein the feeding means constantly rotates during the feeding operation. (5) The feeding means is comprised of a pair of rollers rolling into contact with each other, one of which is suspended in isolation and made of a material with a low coefficient of friction.
Feeding device as described in section. (6) The feeding device according to claim 1, wherein the feeding means, the taking-out means, and the aligning means have no torque in the conveying direction of the paper sheets. (7) As a means for eliminating torque, a one-way clutch is used in the delivery means, the take-out means, the aligning means rollers, and the drive transmission section that transmits power to these means. Feeding device as described in section.