JP2986227B2 - Sheet material supply device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet feeding apparatus, and more particularly to a sheet feeding apparatus for storing and feeding a rectangular sheet such as a film.

[0002]

In the sheet material feeding device for supplying a rectangular sheet material, such as a film of the Related Art Image reading apparatus and an image writing device has a configuration shown in FIG. 1 0. That is, a storage means (storage plate 2) for stacking and storing the square sheet materials 1 and a transfer means (sucker 4) for sucking and transferring the uppermost layer of the stored square sheet materials are provided. Then, one by one sequentially from the top layer of the square sheet material stored and stored,
Conveying roller 3 of an image writing device or an image reading device
a, 3b.

[0003]

In this case, it is necessary to adjust the position and posture of the sheet material. For example, FIG.
As shown in FIG. 1 , if the sheet material is skewed in the course of conveyance, reading and writing of an image will be hindered. As a result, FIG.
As shown in FIG. 2 , the image becomes oblique and the corners become chipped. Such skew often occurs when the sheet material 1 is taken out of the storage tray 2 for transport by the suction cup 4.

Therefore, various methods have been devised. For example, the guide means provided on the side end of the housing pan, further provided with only means with press laterally the other end, there is that to carry out the positioning of the sheet material.

In this method, a special pressing means is required, and the apparatus becomes complicated and expensive. In addition, space for the press with only means is required in the receiving dish, equipment is increased in size. Then, the sheet material may be damaged.

Further, as another method, there is a method in which the sheet is moved along a sliding path of a certain distance and the position of the sheet material is not restricted for a certain period, and thereafter the position is restricted by pressing means. is there.

In this method, there is a problem that the sheet material passage path becomes long and the apparatus becomes large. Further, a driving unit for the pressing means is required, and the apparatus becomes expensive. Further, the possibility that the sheet material is damaged increases. In addition, the frequency of position control failures increases, which is likely to cause sheet conveyance failure.

[0008] As still another method, the side of the sheet material storage tray is strongly pressed against the sheet material to regulate the position.
There is also a method of performing a transfer operation by a suction cup. However, the size of the sheet material has a dimensional error due to a cutting error generated during manufacturing. For example, for a sheet material of 430.0 mm x 354.0 mm, a tolerance of plus or minus 1 mm is allowed. For this reason, if the position of the sheet material is restricted by the sheet material storage plate having a width almost the size of the sheet material, the sheet material may bend at the time of the transfer operation by the suction cup, and a malfunction may occur.

The present invention has been made in view of such a point, and an object of the present invention is to provide a sheet material supply apparatus capable of preventing a sheet material from being inclined and performing a reliable sheet material conveyance. .

[0010]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a sheet material storing means for stacking and storing rectangular sheet materials, and adsorbing one of the uppermost layers of the sheet materials stored in the sheet material storing means. and transport means for moving Te, and fixed guide means disposed in the sheet material moving direction parallel to the side surface of the sheet material housing means, fixed guide means opposite to the sheet material housing
On the other side in the means, slide towards the fixed guide means
Can rotate in a plane parallel to the floor of the sheet material storage means
Possible and tilted about an axis parallel to the sheet material movement direction.
Rotatably to a disposed a movable guide means, the movable guide
Are fixed at two places separated in the sheet material moving direction.
It is characterized by being biased in the direction of the constant guide means .

[0011]

According to the present invention, when the sheet material is transferred from the storage means to the outside by the transfer means by the fixed guide means and the movable guide means, the sheet material is appropriately pressed and the inclination is reliably prevented.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a structural view showing a characteristic portion showing one embodiment of the present invention, FIG. 2 is a partial sectional view seen from a side, FIG. 3 is a top view, FIG. 4 and FIG. FIG. 6 is a detailed configuration diagram of the sheet pressing means.

In these figures, the fixed guide means 5
a, 5b are disposed on the side surface of the sheet material moving direction parallel to the storage tray 2, storage tray opposite to the fixed guide means
The movable guide means 6 is provided on the other side surface of the second member 2 .
The movable guide means 6 includes springs 7 and 8 and
It is mounted on the mounting base 9 by the hoods 10a and 10b . Specifically, the movable guide means 6 is a fixed guide means.
It is slidable in 5a and 5b directions (Fig. 4 (a)),
2 can rotate in a plane parallel to the floor (Fig. 4 (b)).
Can be tilted about an axis parallel to the sheet material movement direction.
5) . The fixed guide means 5a, 5b
The movable guide means 6 is preferably made of a durable material (resin, buff-polished stainless steel, etc.) having a good surface slip. The movable guide means 6 has tapered ends at both ends in order to improve the sliding of the sheet material.

First, with such a configuration, the sheet material 1 such as a film is stacked and stored in the storage dish 2. And
Suction cups 4 as shown in FIG. 1 0 adsorbs the sheet material 1 is conveyed to the sheet material moving direction (conveying roller side). At this time, the side surface of the sheet material 1 receives a pressing force by the fixed guide means 5a and 5b and the movable guide means 6.

First, when the suction cup 4 adsorbs the sheet material,
As shown in FIG. 7, it is assumed that the sheet material 1 is misaligned.
You. In this state, a force A is applied from the fixed guide means 5b to the movable guide means 6 via the sheet material 1, and the springs 7, 8 contract independently, whereby the movable guide means 6 is easily rotated and displaced. As a result, a force B in the direction of pushing back the movable guide means 6 is generated, and the force A and the force B are stationary at a position where they are balanced. Initially, as shown in FIG. 7, the movable guide means 6 is in a considerably inclined state (a state in which the sheet material is inclined; the inclination angle θ1), and both forces are balanced.

Here, assuming a case where the sheet material 1 is shifted upward in FIG. 7 while maintaining the posture of FIG.
A gap is generated between the fixed guide means 5b and the sheet material 1,
In addition, the pressing force of the movable guide means 6 (the amount of contraction of the springs 7, 8) increases. For this reason, when the suction cup 4 moves the sheet material 1 upward in FIG.
With this movement, the pressing force between the fixed guide means 5b and the sheet material 1 is relaxed and the force A is weakened, and the sheet material 1 is pushed by the springs 7 and 8, so that no gap is formed between the sheet material 1 and the fixed guide means 5b. In this way, the entire sheet material 1 rotates clockwise, and balances at the inclination θ2 in FIG. 8 (θ2 <θ1 in FIG. 7). The suction cup 4 has some degree of freedom.
As a result, the front part is sucked by the suction cup 4
The rotated sheet material 1 also rotates enough to correct the tilted state.
Is allowed. By such a process, .theta.1 gradually approaches 0 by the time the sheet material 1 is held between the transport rollers. That is, the transport roller is the sheet material 1
At the time of holding the sheet material 1, the inclined state of the sheet material 1 is almost completely eliminated.
doing.

The entire sheet material 1 rotates, and the inclined state is
When it is almost completely resolved, the transport roller holds the sheet material 1
You. After the sheet material 1 is securely nipped by the conveying rollers, even if the suction by the suction cup 4 is released , the posture (θ
(1 approaches 0) does not change. Therefore, the sheet
The material 1 was pinched between the transport rollers so that no skew occurred.
And Thereafter, the rear end portion of the sheet material 1 passes through the tapered portion of the fixed guide means 5b. If the fixed guide means (5a, 5B) are continuous, a conveyance failure is likely to occur. Therefore, by separating the fixed guide means into two parts and providing the tapered portion, the force applied to the sheet material 1 is reduced, and the conveyance failure can be prevented. Although the taper is provided only in the direction in which the sheet material moves, the taper may be provided in another direction.

FIG. 9 is a structural view showing another example of the structure of the portion where the movable guide means 6 and the mounting table 9 are mounted. With this configuration
Is a to Rukoto the backbone portion of the shaft 10 in a hemispherical shape, the movement of the movable guide means is secured.

[0020]

[0021]

[0022]

[0023]

[0024]

In the sheet supply apparatus of the above embodiment , the movable
The guide means 6 is provided at two places separated in the sheet material moving direction.
And fixed guide means 5a,
It is urged in the 5b direction. This separated spring
7 and 8, the movable guide means 6 causes one of the spurs to move.
The ring is urged clockwise and the other spring
The sheet material 1 is urged in the counterclockwise direction, and the sheet material 1 is inclined.
The sheet material 1 is fixedly guided by the fixing
Press in directions a and 5b. Therefore, the skewing of the sheet material 1 can be eliminated by an inexpensive, simple, and small mechanism without requiring power or a large area. This can prevent the recording image position from tilting. Further, a jam or the like on the conveyance path due to the inclination of the sheet material can be reliably prevented. The positioning accuracy of the supply means itself (in this embodiment, the suction cup) may be rough and can be realized at low cost. For example, when using a suction cup to the supply means, when pressed against the sheet material, or can avoid the risk of the position of the sheet material is shifted when away from the sheet material. Also, when the sheet material is stored in the storage dish, it is not particularly obstructive. Since the fixed guide means is divided into a plurality of members and a part thereof is tapered, the sheet material can be stored smoothly.

[0026]

As described in detail above, according to the present invention, the movable guide means is separated in the sheet moving direction.
It is urged at two places in the direction of the fixed guide means.
Movable guide means quickly follows the inclination of the sheet material
The sheet material can be pressed in the direction of the fixed guide while
The skew of the sheet material can be eliminated, and the sheet material can be reliably conveyed .

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a configuration of an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a configuration of a cross section of an embodiment of the present invention.

FIG. 3 is a top view showing a top configuration of one embodiment of the present invention.

FIG. 4 is an explanatory view showing a movable guide means according to one embodiment of the present invention.

FIG. 5 is an explanatory view showing a movable guide means according to one embodiment of the present invention.

6 is an explanatory diagram showing an operation state of the embodiment shown in FIG.

FIG. 7 is an explanatory diagram showing a state of position regulation according to one embodiment of the present invention.

FIG. 8 is an explanatory diagram showing a state of position regulation according to one embodiment of the present invention.

FIG. 9 is an explanatory view showing a movable guide means according to one embodiment of the present invention.

FIG. 10 is an explanatory diagram showing a state of sheet material transfer .

FIG. 11 is an explanatory diagram showing a meandering state of a sheet material by a conventional apparatus .

Is an explanatory view showing a recording image <br/> more tortuous sheet material in Figure 12 the conventional apparatus.

[Explanation of symbols]

1 sheet material 2 housed pan (sheet containing means) 3a, 3b conveying roller 4 suction cups (transferring means) 5a, 5b fixed guide means 6 movable guide means 7, 8 spring 9 mount 10 a, 10b shaft

Claims (1)

(57) [Claims] 1. A sheet material storage means for stacking and storing square sheet materials, a transfer means for adsorbing and moving one of the uppermost layers of the sheet materials stored in the sheet material storage means, and Fixed guide means disposed on a side surface parallel to the sheet material moving direction; and the other of the other sheet material storage means opposed to the fixed guide means .
The seat can slide on the side in the direction of the fixed guide means.
Rotatable in a plane parallel to the floor of the material storage means, and
Provided to be tiltable about an axis parallel to the sheet material movement direction
And a movable guide means which, the movable guide means, two places spaced in the sheet material moving direction
Wherein the sheet is supplied in the direction of the fixed guide means .