JPH0275531A - Feeding device - Google Patents

Abstract

PURPOSE:To feed the material to be fed securely one by one, by comprising a friction separating member for feeding the material to be fed, which is fed by the rotation of a feeding roller, to the outside of a cassette one by one, and a separating fence to which the front edge of the material to be fed, laminated on a loading plate, abuts and for feeding only the material to be fed which positioned upper than the clearance. CONSTITUTION:When a cassette 1 is attached to the main frame of a device, the most upper surface of the material 5 to be fed is pressure welded to a feeding roller 7 by the energizing force of a spring 10. When the feeding roller 7 rotates to the A direction, the material 5 to be fed to the most upper surface is fed to the forward. By the presence of a separating fence 6, only the material to be fed which positioned upper than the separating fence 6 is fed. The tip of the material 5 to be fed which is transferred to the forward abuts a guide part 4b. Only one piece of the most upper position is passed through between a friction member 4a and the front part 2a of a cover by the friction and the elastic force of the friction separating member 4. If the cassette 1 is pulled out from the main frame of the device under the condition that the material 12 to be fed of the most upper position is pinched between the friction separating member 4 and the front part 2a of the cover, the material 12 to be fed does not stay in the main frame of the device.

Description

Detailed Description of the Invention (Field of Industrial Application) This invention is a method for feeding relatively rigid objects such as envelopes, postcards, and thick paper to a processing device such as a printing device or a copying device. The present invention relates to a feeding device for feeding.

(Prior Art) Conventionally, a paper feeding device used in a processing device such as a printing device or a copying device, and feeding paper, prevents double feeding and separates and feeds paper sheets one by one. The cassette that accommodates the sheets is provided with separation means such as claws for separating the sheets or rollers and friction plates for separating the sheets on the side edges of the cassette. For paper separation rows, there are two types: one that has a dedicated roller separate from the feeding roller (i.e., one that has two rollers), and the other that doubles as the feeding roller and the feeding roller. (i.e., one with one roller).

These are mainly applied to devices that feed thin paper such as printing paper and copy paper.

(Problems to be Solved by the Invention) However, in the conventional feeding device described above, if the separating roller and feeding roller are separate, the cost is high because there are a large number of rollers. If the roller is used both as a separating roller and a feeding roller, the diameter of the roller needs to be increased, resulting in an increase in the size of the device. In addition, in the case of separation claws, the structure is intermediate, but if the object to be fed requires force when bending, such as a cylinder or cardboard, when separating with the separation claw, the Damage such as bending or wrinkles may occur.

Furthermore, in the case of the separation means using the separation roller and the friction plate, the separation roller cannot be installed inside the cassette, so when removing the cassette from the main body, the There was also the inconvenience that the delivered items were left intact in the main unit.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a box-shaped cassette for accommodating 8IWJ of relatively rigid paper and other objects to be fed, and a box-shaped cassette for accommodating objects to be fed such as relatively rigid paper. a loading plate that is arranged to lif the object to be fed; and a feeding roller that is arranged above the cassette and comes into contact with the uppermost surface of the object to be fed, and sends out the uppermost object to be fed. a biasing member that biases the stacking plate upward to press the top surface of the objects stacked on the stacking plate against the feeding roller; The friction member is elastically brought into contact with or close to the lower surface of the lid body that covers at least the front upper surface of the cassette, and the feed material sent out by the rotation of the feed roller is guided to the contacting or proximate portion. a frictional separation member that has a guide portion that feeds the objects to be fed out of the cassette one by one by the rotation of the feeding roller; It is installed in a sheath shape with a gap at the top inside the cassette,
The front side of the stacked objects to be fed comes into contact with the stacking plate,
The apparatus is characterized by comprising a separation plate that allows delivery of only the object located above the gap.

Further, in the case where the item to be sent is an envelope, and
When the envelope has a gluing strip and the bottom surface thereof is the bottom surface, it is preferable that the frictional separation member is provided at a position away from l so that the gluing strip can pass through.

Furthermore, when the object to be fed is an envelope, and when the surface of the envelope having the glued piece faces upward, the glued piece passes through the feeding roller. It is also suitable to provide it at a position away from the position where it is used.

Furthermore, it is effective to make the coefficient of friction between the loading plate and the objects to be fed smaller than the coefficient of friction between the objects to be fed.

(Function) As described above, the present invention allows the rIJ11 member to elastically come into contact with or be close to the lower surface of the lid body that is provided at the front part of the cassette and covers at least the upper surface of the front part of the cassette, and to Alternatively, a guide portion is provided in a nearby portion to guide the objects sent out by the rotation of the feeding roller, and the objects sent out by the rotation of the feeding roller are sent out of the cassette one by one. A frictional separation member, and a sheath-like structure that stands between the frictional separation member and the loading plate with a gap in the upper part of the cassette in the width direction of the cassette, and the objects to be fed are stacked on the MA grade plate. By providing a separation wall with which the front sides of the walls abut and allow only the objects to be fed located above the gap to be sent out, only one feeding roller is required.1. Moreover, the objects to be fed can be reliably fed one by one by the two separation means of the friction separation member and the separation wall.

And the structure becomes simple and jt! Since the friction separation member is provided on the cassette, even if the cassette is removed from the main device when the object to be fed is caught between the friction separation members, the object to be fed will not be left on the main device side. do not have.

Further, in the case where the item to be sent is an envelope, and
When the surface with the glued piece of the envelope is the lower surface, by providing the friction separation member at a position away from the position through which the glued piece passes, the glued piece can be frictionally separated. CI for parts! ! It is possible to prevent inconveniences such as wrinkles and deformation due to rubbing.

Similarly, if the object to be fed is an envelope and the side of the envelope with the glued piece is the top surface, the feeding roller The above-mentioned effect can also be obtained by providing it at a position away from the passing position.

Further, by making the coefficient of friction between the loading plate and the objects to be fed smaller than the coefficient of friction between the objects to be fed,
Since the urging force of the urging member can be reduced, costs can be reduced.

(Embodiment) FIG. 1 is a sectional view showing the configuration of an embodiment of the present invention, and FIG. 2 is a perspective view of the device in an open state.

The cassette 1 is formed into a box shape, and a lid 2 is placed on the top surface of the cassette 1 so as to be openable and closable. A window 3 through which the feeding roller 7 faces is formed in the lid body 2 . At the inner bottom of the cassette 1, the rear edge (the right side in the figure is the rear) is inserted and fixed to the lower inner surface of the rear wall of the cassette 1, and the front part is flexible and can be rotated up and down. Loading plate 9 in movable state
is provided. A spring 10 is disposed between the lower front surface of the stacking plate 9 and the bottom surface of the cassette 1 as a biasing member for biasing the front portion of the stacking plate 9 upward.

Hard objects 5 such as envelopes, postcards, or thick paper can be stacked on the stacking plate 9, and the stacking plate 9 is stacked by the biasing force of the spring 10.
is lifted upward, so that the uppermost surface of the object to be fed 5 is brought into pressure contact with the feeding row 57.

A friction plate for preventing double feeding of the objects 5 to be fed is not attached to the loading plate 9. This is because, as will be described later, in this embodiment, separation is performed in two stages: primary separation and secondary separation, so double feeding when fed from the stacking plate 9 does not pose a problem. Moreover, by not attaching a friction plate to the loading plate 9 in this way, the frictional force between the loading plate 9 and the object to be fed 5 can be made smaller than when a friction plate is attached. , the biasing force of the spring 10 can be reduced. This is because when a friction plate is attached, the frictional force between the loading plate 9 and the object to be fed 5 is large, so in order to send out the object to be fed by the feeding roller 7, it is necessary to It is necessary to increase the pressing force between the object 5 and the feeding roller 7, but if there is no friction plate, the object 5 to be fed
This is because even if the pressure contact force between the feed roller 7 and the feed roller 7 is small, the feed object 5 can be easily fed.

The feed 0-57 rotates together with the shaft 11, which is attached to a processing device main body (not shown) such as a copying device or a printer device, and is rotated by a drive device provided in the device main body. As the feed roller 7 rotates, the uppermost object 5 is sent forward.

At the front inside the cassette 1, there is a
! The rubbing member 4a is brought into elastic contact with or close to it, and the object to be fed 5 sent out by the rotation of the feed roller 7 is brought into contact with or close to the contacting or close portion 20, and the object 5 is delivered to the front part of the lid body 2a.
A friction separation member 4 is erected and configured to pass while receiving friction between the friction member 4a and the friction member 4a. This friction separation member 4 has a guide portion that slopes downwardly toward the rear from the contact or proximity portion 20 in order to guide the feed object 5 sent out by the feed row 57 to the contact or proximity portion 20. 4b, and this guide portion 4b
A machine member 4a is also attached on top.

rjli1! Between the separating member 4 and the stacking plate 9, a scrap-like separating plate is installed in the width direction of the cassette 1 so as to have a gap 21 at the upper part of the cassette. This separation plate 6 is
The front sides of the objects stacked on the stacking plate 9 abut, allowing only the objects 5 located above the gap 21 to be sent forward.

Next, the operation of this embodiment will be explained.

First, with the lid 2 of the cassette 1 open, the objects 5 such as envelopes are stacked on the stacking plate 9. Then, the lid body 2 is closed, and the cassette 1 is inserted into a predetermined position in the main body of the apparatus from the front part.

When the cassette 1 is installed in the main body of the apparatus, the feeding roller 7 faces the inside of the cassette 1 through the window 3, and the uppermost surface of the object to be fed 5 is pressed against the feeding roller 7 by the biasing force of the spring 10. be done.

When the main body of the apparatus operates and the feeding 0-rough rotates in the direction of the arrow in the figure, the object 5 on the uppermost surface that is in pressure contact with the feeding roller 7 is sent forward. At this time, the S
Due to the rubbing, the objects to be fed below the top are also dragged and subjected to a force that moves them forward. Here, as shown in Figure 3,
Due to the presence of the separation plate 6, the objects to be fed at a position below the height of the separation plate 6 are prevented from moving forward by the separation plate 6, and only the objects to be fed at a position higher than the separation plate 6 are moved forward. sent to. This effect will be referred to as primary separation.

In this way, the first separation is performed by the action of the separating plate 6, so that one object 5 to be fed and only a few pieces above the separating plate 6 are sent forward.

The tips of the several objects 5 that have moved forward beyond the separation plate 6 come into contact with the guide portion 4b of the frictional separation member 4, as shown in FIG. The object 5 that has come into contact with the guide portion 4b is moved by the r! of the frictional separation member 4. Due to friction and elastic force, only the uppermost sheet can pass between the friction member 4a and the front lid portion 2a. In this manner, the action of finally sending out one sheet of the feed object 5 to the outside of the cassette 1 by the frictional separation member 4 will be referred to as secondary separation.

When the uppermost object to be fed 12 is sent forward by a certain amount from the front of the cassette 1, its tip is caught by the conveyor []-ra (not shown) inside the apparatus main body, and the object 12 is fed into the apparatus main body. Re,
Copy processing, printing processing, etc. are performed.

By performing the first separation and the second separation in this manner, the feeding device of this embodiment can reliably feed one object to be transported. In addition, since only one feeding roller 7 is required and it may be of a small diameter, the feeding device can be made compact.

Furthermore, by equipping the cassette 1 with the frictional separation member 4, the cassette 1 is removed from the main body of the apparatus while the uppermost object to be fed 12 is sandwiched between the frictional separation member 4 and the front part 2a of the lid. Even if the object is removed, the object to be fed 12 will not be left inside the apparatus main body.

In addition, in order to do this even more reliably, 1fJ of the lid body 2 must be
The following relationship should be established between the friction coefficient μm of the lower surface of the portion 2a, the friction coefficient μ2 of the friction member 4a, the friction coefficient μ3 of the surface of the object to be fed 5, and the friction coefficient μ4 of the feeding roller rough. is desirable.

μm×μ3〈μ2〈μ4 In other words, the frictional force between the friction member 4a and the object to be fed 5 should be as large as possible than the frictional force between the lower surface of the front part 2a of the lid body and the object to be fed 5. , * between the feeding roller 7 and the object to be fed 5
By making the force smaller than m, only the uppermost object 12 can be smoothly delivered to the main body of the apparatus.

In addition, when the object to be fed 5 is an envelope, the adhesive on the envelope is uneven, so if the frictional force of the feeding roller 7 or the friction separation member is applied to the glued TT piece, the adhesive will be uneven. may become deformed or wrinkled. In order to eliminate such inconvenience,
The following measures can be taken.

As shown in Fig. 5, the object to be fed (in this case, an envelope) has a glue strip 8 on one side parallel to the feeding direction (not indicated by arrow M in the figure). ) 5 are stacked on the stacking plate 9 with the adhesive piece 8 facing downward, the position of the friction separation member 4 is shifted from the widthwise center of the inner bottom of the cassette 1, and the adhesive The attachment point is set at a position away from the position where the piece 8 passes. As a result, when the object to be fed 5 is sent out, the glued piece 8 passes through the friction separation member 4 at a distance d, and the glued piece 8 is prevented from being damaged. can be prevented.

Similarly, when the objects 5 to be fed are stacked on the stacking plate 9 with the glued piece 8 facing upward, the position of the feeding roller 7 is adjusted to the cassette as shown in FIG. 1, and the gluing is set at a position away from the position through which the piece 8 passes.

As a result, when the object to be fed 5 is sent out, the gluing piece 8 passes through the feeding roller 7 with an interval d, and similarly to the above, the gluing piece 8 It is possible to prevent losses from occurring.

Further, in the embodiment shown in FIG. 1, the spring 10 disposed at the inner bottom of the cassette 1 is used as a biasing member for biasing the loading plate 9 upward. , but is not limited to this. For example, an opening is formed in the inner bottom of the cassette 1 at the position where the spring 10 is disposed, and a biasing arm configured to fit into the opening and bias the loading plate 9 upward ( (indicated by reference numeral 22 in FIG. 1) may also be used.

(Effects of the Invention) As described in detail above, the present invention provides a frictional separation member at the front inside the cassette, and the l! 1! By providing a separation wall between the friction separation member and the loading plate, only one feeding roller is required, and the objects to be fed are reliably sent out one by one by the two separation means of the friction separation member and the separation wall. can do. The structure is simple, and since the friction separation member is provided on the cassette, even if the cassette is removed from the main unit when the object to be fed is sandwiched between the friction separation member, the object to be fed will not be transferred. No objects are left behind on the main unit.

Further, in the case where the item to be sent is an envelope, and
When the surface with the glued piece of the envelope is the lower surface, by providing the friction separation member at a position away from the position through which the glued piece passes, the glued piece can be frictionally separated. It is possible to prevent inconveniences such as wrinkles and deformation due to friction caused by members.

Similarly, when the object to be fed is an envelope and the side with the glued piece is the top side, the feeding 0-ra is set to The above-mentioned effect can also be obtained by providing it at a position away from the position through which the piece passes.

Further, by making the coefficient of friction between the loading plate and the objects to be fed smaller than the coefficient of friction between the objects to be fed,
Since the biasing force of the biasing member can be reduced,
Cost reduction can be achieved.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view showing the configuration of an embodiment of the present invention, Fig. 2 is a perspective view of the embodiment in an open state, and Fig. 3 shows the state at the time of primary separation in the embodiment. 4 is a cross-sectional view showing the state at the time of secondary separation in the same embodiment, and FIG. 5 is a cross-sectional view showing the state in which the article to be fed is an envelope and the glued piece is fed with the piece facing downward. 6th plan view showing the positional relationship of frictional separation members;
The figure is a plan view showing the positional relationship of the feeding rollers when the object to be fed is an envelope and the envelope is fed with the pasted side facing upward. 1...Cassette 2...Lid body 4...#l! Friction separation member 5... Feeded object 6... Separation wall 7... Feeding roller 9... Loading plate 10... Spring 2o...Contact or proximity part 22...
- Biasing arm applicant Brother Industries, Ltd. agent Patent attorney Hidehiko Okada (3 others) 1st, 2nd, 31st! l Figure 4↓! 5t! r ↓ Figure 6

Claims (4)

[Claims] (1) A box-shaped cassette that stores relatively rigid paper and other objects to be fed in a stacked manner; a stacking plate that is disposed at the inner bottom of the cassette and on which the objects to be fed are placed; a feeding roller disposed above the cassette and abutting the uppermost surface of the object to be fed, and feeding out the uppermost object; a biasing member that presses the top surface of the stacked objects to be fed against the feeding roller; and a friction member provided on the lower surface of a lid body provided at the front part of the cassette and covering at least the front upper surface of the cassette. and a guide portion for guiding the object fed by the rotation of the feeding roller at the contact or proximity portion, and the guide portion for guiding the object fed by the rotation of the feeding roller. a friction separation member that sends out the feed items one by one to the outside of the cassette; a wall-like structure installed between the friction separation member and the loading plate in the width direction of the cassette so as to have a gap at the upper part of the cassette; A feeding device comprising: a separation wall against which the front sides of the objects stacked on the plate abut, allowing only the objects located above the gap to be sent out. (2) If the item to be sent is an envelope, and
2. The envelope according to claim 1, wherein when the surface of the envelope having the gluing strip is the lower surface, the friction separation member is provided at a position away from a position through which the gluing strip passes. Feeding device. (3) When the item to be sent is an envelope, and
Claim 1, wherein when the surface of the envelope having the gluing strip is the top surface, the feeding roller is provided at a position away from a position through which the gluing strip passes.
Or the feeding device according to 2. (4) The feeding device according to any one of claims 1 to 3, wherein a coefficient of friction between the loading plate and the objects to be fed is smaller than a coefficient of friction between the objects to be fed. .