JPS59108637A - Delivering device for sheet paper - Google Patents

Abstract

PURPOSE:To separate sheets of paper being superposed into piece and thereby prevent the occurrence of double feeding, by mingling respective rollers, some one has strong frictional force but the other weak, together in existence and stretching a reverse characteristic belt corresponding to each roller's frictional force, while making the paper into aliding contact with each of rollers as long as the specified length on a roller surface. CONSTITUTION:Tentatively when a group of triply superposed sheets of paper 6 are fed from the inside of a cassette by a roller 8, first of all, they are fed into space between a roller 13 and a belt 15 after a group of these sheets of paper 6 are fed into space between a roller 12 and a belt 14 for the first time, and if so, there produces some frictional force between these sheets of paper 6 touching the belt 15 and when this force comes stronger than adhering force lying between topper sheets of paper, the paper 6 is kept back by dint of the belt 15 and a piece of paper separates from these paper groups 6. Next, two sheets of the paper 6 given conveying force are further conveyed forward, and the belt 15 and the second paper 6 contact anew so that the second paper 6 is retained by the belt 15, thus the first paper 6 alone is separated from the paper groups 6 for delivery.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a simple ladle/feeding device for feeding sheets, which is widely used in electronic copying.

Conventional Jlrj easy-form sheet paper (hereinafter referred to as H)
In the feeding device (1), in particular, many inventions and ideas have been made and put into practical use to prevent paper from stacking, but there is still no perfect way to prevent paper feeding (1).
In that respect, it lacks stability. The paper feeding device 4' that has been used conventionally is a cassette with claws,
A feeding device that prevents polymerization by combining friction, rollers, and a friction bat is widely known. However, separation is difficult due to less influence of moisture absorption due to changes in the paper environment (the paper is also layered with paper, which can cause paper jams in the device and cause accidents that may lead to malfunctions). was occurring.

The present invention was developed in view of this problem, and was able to prevent the polymerization feed by using a simple mechanism.

This will be described in detail below.This feeding device has a part for feeding paper and a part for separating paper, and the paper feeding part uses an elastic material with a high surface abrasion as much as possible to feed the paper with weak contact pressure. Make sure to generate sufficient frictional force, and then proceed to the next step 1.
The #11 vibration force with the paper is lowered to effectively perform the separation action at the separation part. In the separating section, there is a conveying section that combines a conveying member that has paper conveying force and a contact member that does not have conveying force, and a combination of a guide member that does not have conveying force and a fixing member that has frictional force. Due to the difference in conveying force between the two, superposition feeding is prevented depending on the composite device. FIGS. 1 and 2 are a side view and a plan view including essential parts of the present invention. The feeding device 1 rotatably supports a tray 3 placed in a cassette 2 on a fulcrum 4 near the rear end, and further pushes up the lower part of the tip side with a coil spring 5, and the tray holds 6 groups of sheets on the tray 3. Apply heat so that it comes into contact with the surface of roller 8. Roller 8 is formed of a frictional elastic body and quickly arrives at the groin 7, and in real blood, it rotates in the direction of the upward arrow G - 11) j to the left. As mentioned above, roller 8 is proportional, and 6 is only the size to feed the paper from the cassette, so if the pressure exceeds the mental force, the kneading force of the paper Oj1 with the next 1i [+ position will be increased, so the minute n1t will be Problems 6/11 and 6/11 are caused by overlapping feed or take-out, and even paper sheets come out, so even with a pressure of 9゛j, check the feed force of the paper 6 and do it. In issue 17, sprockets 9 and 10 were changed to sprocket 10 (sprocket 10) and 4 had a history not shown.

Drive+lUJ from the axis thread with clutch Q, lJ )l
IllOden, Kabiribo Icho 5. min41ift
As for A, φyu11”-1′? Roller 12 with friction force
And 12 is used to narrow down Koro 13, which has low power, and it is a hard 7 and a parrot. As shown in FIG. 3, the belts 171, 14 and 15 are placed in contact with the front squares of the rollers 12, 12 and 13 for a predetermined length, and the respective (''-shaped spring plates 46, 16 and 17 as shown in the figure, and as shown in the figure (・Depending on the attachment/detachment of cassette 2, belts 11, 14 and 15 are connected to rollers 12, 12 and 13, !・+IL iso (l)
IIIi belt 14. and 14 are FAI PA strong materials with weak strength such as polyester, deflon, etc.
>, i do. Colo 12. 12 and 13 are arrow 11.”
Since rotation in the direction is given, the rollers 12 and the belt 14
The contact point 18 of the roller 13 and the belt 15 contact point 19 earlier than the contact point 19 of the belt 15 by an interval of 20 minutes to convey the incoming phase 7, and in that case, the g6 feeding force of the rollers 12 and 12 is equal to the braking force of the belt 15 by 1187 Because of this combination, the paper is fed in the direction of the arrow. According to FIG. 4, the distributing action for the paper 6 is shown. If three sheets of paper 6 are sent out from the cassette 2 by the roller 8, then the paper 6 I, which received three sheets, is The paper 6B is first inserted between the rollers 12 and the belt 14, and due to the sliding between the belt 14 and the paper 6B, the rollers 12 and the belt 1 are conveyed by the frictional force of the rollers 12.
Sent in between 4. When it is fed in, it catches the contact point between the roller 13 and the belt 15, and when it is advanced a little, the belt 15
An Mtn force is generated in the curve of the paper 6 that is in contact with and this force is stronger than the bonding force between the upper layer 1 and the sheet 6.
is pulled by the belt 15) A1 One sheet is drawn from the six groups of colored sheets. Transport No. 1 (7) (・l, i
When the 7 sheets of paper 6 are sent to 1, the belt 1
5 and 2 'z L+ paper 6 and ¥) ``PfI!
t,,'' Similarly, when two sheets are connected in a row, there is a vibration force between the two sheets of paper 6 and the belt 15, which is greater than the resultant force of the IhH sheet and the first sheet of paper 1i11. 15 V/i'W': It is held back, and only the first sheet 7 paper 6 is separated from the group of 6 sheets, making a total of 1.2 sheets. will be served. As shown in FIG. Waiting paper 6 is in rollers 13 and 12.
(id + 1 for the same general feeding force), the third sheet is sent out, and the third sheet is sent out next. If the cassette remains between 14 and 15, when the cassette is removed, the paper 6 is As mentioned above, each belt 14 is applied to the surface of each roller 12, 12 and 13.
14 and 15 are highly flexible and have a mechanism in which they are in contact with each other under tension, so they fit together naturally and are not forced, so they can withstand long-term use and maintain their separation effect. Also, by selecting the tension of the belt, the separation effect can be maintained.
The load caused by friction can be reduced. Nakoro 1
3 may be transmitted through the shaft 11. In FIGS. 3 and 4, the respective belts 14, 14 and 15 are supported by spring members 16, and the effects of the method shown in FIG. 5 will be described. Separation part B has belts 14, 14 and 15 on the sheet feeding side fixed at a predetermined position, one end of which is fixed to a support member 23, and on the paper insertion side shafts 21 and 21 arranged at a predetermined position. , the collars 22 and 22 are rotatably supported, the belts 14, 14 and 15 are strung between the collars 22 and 22, and the other ends of the belts 14, 14 and 15 are fixed to one end of each leaf spring. The other end of each leaf spring 24 is quickly attached to each support member 25 placed at a predetermined position, and with a predetermined long sword, the belts 1414 and 15 are adjusted to the surfaces of the rollers 12, 12 and 13, and are brought into contact with each other. , tension is applied to each by the plate spring 24. When the rollers 12, 12 and 13 are rotated in the direction of the arrow in the above-mentioned sliding state, the rollers 12 and 12 and the belts 14 and 14 Braking is applied to the rollers 12 and 12 due to frictional force, increasing the load.However, since the ends of the belts 14 and 14 on the sheet feeding side are fixed to the leaf spring 24, tension is applied to the belt 14. However, if the frictional force is greater than the tension, the plate
The fixed portion of the belt 14 is displaced, the tension of the belt 14 is weakened, the braking force of the rollers 12 is weakened, and the load is reduced. Further, the relationship between the rollers 13 and the belt 15 has a similar effect, but since the friction of the rollers 13 is low, a strong braking force is not generated. Even if the above-mentioned braking force occurs, the paper actually
0nhm~20m.

Since it is located near m, it is a short time. When one sheet of paper is inserted, there is a strong frictional force between the rollers 12 and the belt 14, and a low frictional force between the paper and the belt 14, so the belt 14 spring 24
As a result, a predetermined pressing force is applied, and the frictional force between the paper and the rollers 12 is increased. When the paper is placed between the bells l-1 and 5 and the rollers 13, a frictional force is generated between the belt 15 and the paper, but almost no conveying force is generated between the belts 15 and the rollers 13, They only provide guidance. Since the conveyance force for the paper is stronger than the braking force from the belt 15, the conveyance force of the rollers 12 and 12 is stronger, so the paper is sent out. Next, we will discuss the case of two sheets of paper. When two sheets of paper are inserted in a stacked state, a gap between each roller and belt corresponding to two sheets is maintained by the action of the leaf spring, and the rollers 12 and 120 A conveyance force acts on the paper in contact with the surface, and a braking force is applied to the paper in contact with the belt 15. Since the adhesion force between the sheets is low compared to the conveyance force and the braking force, separation can be easily performed. I can do it. For example, experiments have proven that even if both corners of the paper are folded upward to form a single unit, the separation effect is as simple as removing the corners and separating the paper. Furthermore, even if about 10 sheets are inserted, a gap corresponding to the thickness of the number of sheets inserted is automatically secured, and the gap is reduced due to separation. It completely separates the intake. It is possible to move between the belt 21 and the collar 22, making it easy to follow the changes in the belt. Although an example has been described above, the gist of the action and effect is important and is not limited to stone construction. Also, from FIGS. 1 and 2, it can be seen from FIGS. roller 8.
The feed speed caused by the difference between the straight speed around the spider and the oblique speed of rollers 12.12 and 15. The tip was ripped off,
Separation at the next stage will be easier. Nao axis 11 is l1I
The sprocket 9 on llI7 is also hooked to the sprocket 26 via the one-sided latch 27 on 'Hit 11, and transmits the rotation +kj+ of 1i407 to the support 11, or the rotation from qIIh 11 is The one-sided clutch 27 prevents the transmission from being disconnected and transmitted to the shaft 7. As described above, the paper separating device of the present invention can facilitate slight and stable separation. The above is /'
A combination of J friction force, roller, and belt caused a disturbance in the overlapping paper book, but in another combination of 1171 minutes.
This will be explained below. As shown in Figure 6, the separation part C is the same as the part tljlU part A in Figure B1.
The roller 28 and the belts 29, 29 and 30 are brought into contact with the r'tt constant length of the outer peripheral surface of the roller 28. roller 2
8 is formed on the axis 27 by the 9·i elastic phase of the culm vibration force,
Belts 29 and 29 are formed with fluorine (&+l Uii) and have a weak force (not shown in the figure, but not shown in Fig. 5). Similarly to 14, the belt 29 is attached to the roller 28 and the same roller is rotated. The belt 3 () is made of urethane and is stretched in the direction of the rotation of the roller 28 as shown in No. 71!1 with an appropriate early force. The other end of the belt 30 is fixed to the support member 31, and the pair of belts 30 is attached to the other end of the leaf spring 35, which is fixed to the support member 34 at the other end of L2, through a roller 33 that is pivotally supported at -132. By tightening the belt 30 in this way by anchoring it firmly and stretching it in the direction of the arrow, the paper separation effect can be further improved.

However, when the material to be separated and transported is other than paper, and a film made of a polymeric material such as polynisdel film and having a static surface property is used, it is difficult to IY friction force increase L7, conveyance of JGX, slip, and filler may be delayed. As shown in FIG. 7, there is a pair of rollers in front of the roller 28;
By setting jυ to H4, the above-mentioned film delay can be prevented.

4. Explanation 1 of the drawings 1 The figure shows the actual state of the light-out device for small sheets of paper of this invention.
Figures 1 and 2 show the main parts of Sen 1 side u) 1 and -'l! Figure 1t+i is shown, and Figures 3, 4, and 51 are the main structure of the structure and the guard 1.
[・Theory, Shikoku ff16 map is the iA part's f・[holiday [n1]
, and the 7th To I, the 2nd part of the beam, the 1i1J, and the diagram.

1... Sheet M/Extrusion value A...
・Separation part B... Separation iIf part C...
・Separation section special πf applicant Hirabayashi

Claims (1)

[Scope of Claims] 1. A belt with opposite characteristics corresponding to the frictional force on the surface of the rollers, in which rollers with strong and weak surface frictional forces that impart rotation in a sheet feeding device are mixed together. Stretch each
A sheet of paper comprising a device that is brought into contact with the surface of the roller to perform a predetermined length of rubbing, allows the sheet of paper to pass through the rubbing portion, and can separate the polymerized sheets of paper. feeding device. 2. In the sheet feeding device according to claim 1, a roller with a strong M vibration force for imparting rotation is formed, and a belt with different strong and weak frictional forces is attached to the surface of the roller. are provided in a predetermined length so as to be in contact with each other, and the belt with low frictional force is stretched in a direction opposite to the direction of rotation of the outer circumference of the roller, and the belt with high frictional force is stretched in the direction of rotation of the outer circumference of the roller. , the sheet is stretched in the forward direction, and the roller and each of the belts are in contact with each other, so that the sheet can be traced in one heap, and the sheet can be divided into two parts. In front of the above roller -% +
A special sheet feeding device that is capable of transporting sheets of paper after the rear paper.