JPS6387451A - Feed device - Google Patents

Abstract

PURPOSE:To prevent floating of sheets to perform excellent conveyance of the sheets, by providing a press body which presses the sheets, taken out by a take out means, against the conveyance passage side. CONSTITUTION:A partition plate 17 is situated to the end face on the take out side of sheets in a manner to be positioned facing the end surface. A sheet press 24, serving as a press body having spring property and smoothness and a low friction factor, is situated to the central part on the lower part side of the partition plate 17. The sheet press 24 is located between two separation rollers 4 and 4, and its tip is extended to a position right before a sheet detecting switch 11. The sheet press 24 is forced into linear contact with ribs 29a and 29a formed on the upper surface of a frame 29 with which to form a conveyance passage. When the sheet is taken out by means of a feed roller 3, the sheet is conveyed in a state to be pressed against the frame 29 side by means of the sheet press 24. This constitution, though the sheet is thin and light, prevents floating of the sheet, and enables the sheet detecting switch 11 to be reliably acted.

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 continuously 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.

(Problem 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 must be lowered,
There were problems such as mechanical complexity, large size, and high cost.

Further, when the paper sheets are taken out by the take-out roller, there is a problem in that if the paper sheets are thin sheets or envelopes, they float up and cannot be conveyed properly.

[Structure of the Invention] (Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention includes a placing section on which stacked paper sheets are placed, and a paper sheet placed on this placing section. a delivery means for sending out the paper sheets from the lowest one, a take-out means for taking out the paper sheets sent out by the delivery means one by one, and a conveyance path for guiding the paper sheets taken out by the take-out means; and a pressing body that presses the paper sheet taken out by the taking out means toward the conveyance path.

(Function) With the above means, a large amount of paper sheets can be fed with a simple configuration without using an elevating mechanism etc., and it is also possible to prevent the paper sheets taken out by the take-out means from floating up.

(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 on which paper sheets 10 such as envelopes are stacked, and a kick roller 2 as a flat delivery stage is rotatably mounted on the lower side of the stacking section 41. It is set in. By this rotation of the paper roller 2 in the direction of the arrow, the stacked paper sheets 10 are fed out from the lowest one, and the feed roller 3 serving as a take-out means
It is extracted by 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. Above feed roller 3
The paper sheets 10 taken out are conveyed along a conveyance path 42, and this conveyance path 42 includes aligning rollers 5 and 6 as alignment means and feeding means along the conveyance direction of the paper sheets 10. An intermediate roller 7.8 is provided.

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.

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 arm μ 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 arm μ58
is transmitted to rotate the feed roller 3.

On the other hand, the 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.

Also, when the paper feed solenoid 63 is turned on, the shaft 8
0, gears 65, 66, 67, and the rudder wheel 68, first the ladder chain 69 and the one-way clutch 7.
Drive is transmitted to the kick roller shaft 86 by the ladder wheel 70 having a built-in roller. 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, a separating roller shaft 85 is driven via a ladder chain 72 and a ladder wheel 73 indicated by -.

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.

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 undercover 26, a cover 22, and a door cover 14, and a PCC board 7 for controlling the feeding device 1 is attached to the undercover 26. In addition, a plate material 30 is welded to the cover door 14 to set the door SWI 3 to 0N10FF, and a torsion coil spring 29 from the frame 21 prevents the cover door 14 from falling down even if the door is opened by a certain angle or more when the cover door is opened. 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 installed on the rack 1 above the cover door 14.
9 and a pinion 20, and the same conveyance path as that for feeding paper sheets 10 loaded 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 checking whether the various switch states 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 the spring clutch 59, and the stacked paper sheets are rotated. When the bottom sheet of type 10 is fed out and the sheet detection switch 11 is turned OFF, the paper feed solenoid 63 is turned 0FFL, 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, it is fed to the printer main body 100 by the intermediate roller 7.8 which is rotating at the same time as the motor 51 is turned on.

By the way, a partition plate 17 is provided opposite to the end surface of the paper sheet 10 on the take-out side. As shown in FIG. 5, the lower central part of the second partition plate 17 is made of, for example, mylar, which has spring properties and smoothness, and
A paper presser 24 is provided as a pressing body with a low coefficient of friction. As shown in FIG. 4, the paper presser 24 is located between the two separating rollers 4.degree. 4, and its tip extends to just before the paper sheet detection switch 11. The paper presser 24 is in linear contact with ribs 29a, 29a formed on the upper surface of the frame 29 constituting the conveyance path.

When the paper sheet 10 is taken out by the feed roller 3, it is conveyed while being pressed against the frame 29 side by the paper presser 24. Therefore, even if the paper sheet 10 is thin and light, it can be prevented from floating and the paper sheet detection switch 11 can be operated reliably.

Further, as shown in FIGS. 6(a) to (c), if the paper sheet is a bag-shaped item such as an envelope 25, the folded part 2 of the envelope 25
5a and the back portion 25b have a 2'rJi structure, so that when the folded portion 25a is sent out in the advancing direction of the envelope 25 by the feed port roller 3, the front portion 25b is pulled in the opposite direction by the separation roller 4. Become.

Therefore, the seal 5225 tries to be lifted until the folded portion 25a passes the feed roller 3, but as described above, the paper presser 24 presses the seal 25 against the frame 29 side, so the folded portion 25a There is no possibility that the paper detection switch 11 will be damaged or the paper detection switch 11 will detect the paper at a position different from the normal position.

[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 can be taken out and fed one by one, starting from the lowest one. There is no need for an elevating mechanism for elevating and lowering objects, making it possible to simplify and downsize the mechanism and reduce costs.

Further, since the paper sheets taken out by the take-out means are pressed onto the conveyance path by the pressing body, the paper sheets can be effectively conveyed without floating up.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a schematic configuration diagram showing a pick-up and feeding device, and FIG. 2(a) is a side view showing a drive mechanism on the light side of the feeding device. Figure 3(b) is a top view, Figure 3(a) is a side view showing the left side drive mechanism, Figure 3(b) is a sectional view showing the positional relationship with the upper part, Figure 3(b) Figure 6(a) is a side view showing the mounting state of the presser plate.
...Paper presser (pressing body). Applicant's agent Patent attorney Takehiko Suzue (b)
(Fig. 5, Fig. 6)

Claims (5)

[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. The paper sheet includes a take-out means for taking out the sheets one by one, a conveyance path for guiding the sheets taken out by the take-out means, and a pressing body for pressing the sheets taken out by the take-out means toward the conveyance path. A feeding device characterized by: (2) The feeding device according to claim 1, wherein the take-out means has a plurality of roller parts, and a pressing body is provided at an intermediate part of these roller parts. (3) Claim 1, characterized in that the pressing body is made of a material having elasticity, smoothness, and low friction.
The feeding device according to item 1 or 2. (4) The feeding device according to claim 1, 2 or 3, wherein the pressing body is attached to a partition provided between the ejecting means and the paper sheets. . (5) The feeding device according to any one of claims 1 to 4, wherein the pressing body is in line contact with the conveyance path.