JPH0829856B2 - Sheet transfer device - Google Patents

Description

Detailed Description of the Invention

[Industrial applications]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet conveying device, for example, a conveying device that conveys a sheet-shaped material such as transfer paper of a copying machine.

[Prior art]

In a copying machine that uses a sheet material such as transfer paper, it is generally known that a pair of roller devices that rotate while pressing each other are used as a conveying unit that conveys the sheet material, and the sheet material is fed between the rollers to convey the sheet material. in use.
In addition, in order to carry out the transportation safely and reliably, upper and lower guide members are used. When the sheet material cannot be conveyed in such a conveying apparatus due to conveyance abnormality (for example, jam), it is necessary to stop the apparatus and remove the sheet material. Therefore, in such a case, in the above-mentioned transport path,
The roller, the guide member, etc. are separated from each other to deal with this. 5 is a conveying device for conveying a sheet material to a transfer portion of the copying apparatus disclosed in Japanese Patent Laid-Open No. 60-213645. This conventional example will be described below. In this conventional example, the pressure release of two pairs of conveying rollers, the setting of a pair of guide plates to a predetermined position, and the release thereof are simultaneously performed by a manual operation. FIG. 5 shows two pairs of conveying rollers, that is, the first pair of rollers 23,2.
7. Crimping the second roller pair 24,20 (normal use) and guide plate
FIG. 6 shows the transport upper and lower rollers (first roller pair 23, 27 and second roller pair 24, 24, 25, 26).
20) shows that the guide plates 25 and 26 are separated from each other, and that the guide plates 25 and 26 are also opened from the predetermined positions. Body side plate 30
The first upper roller 23, the second upper roller 24 and the second lower roller 2
0 is set. On the other hand, the opening / closing side plate 38 is the second upper roller 24.
Mounted coaxially. At the other end of the opening / closing side plate 38, the bearing 35 of the first lower roller 27 is fitted in the oval hole 47 and has a vertical freedom. Similarly, the bearing 40 of the second lower roller 20 is fitted in the oval hole, so that the second lower roller 20 has freedom in the vertical direction. Now, spring the first lower roller bearing 35.
The end of the lifting spring 37 is moved by the 37 and the rising part 38 of the open / close side plate 38 is
Since the first lower roller 27 is pressed against the upper part of the oval hole 47 when the opening / closing side plate 38 is opened, the first lower roller 27 is pressed against the upper part of the oval hole 47. The first upper roller 23 comes into contact with the first upper roller 23 and is pulled by the spring 37.
It becomes the crimping force to 23. On the other hand, in the second roller pair 24, 20 as well as the first roller pair 23, 27, the bearings 40 and 43 are connected by the spring 45, and the place where the bearing 43 is fitted is the same as the first lower roller 27 side. Since it is an oval hole and has a degree of freedom in the up and down direction, the pressure is applied to the second upper roller 24. On the other hand, the other guide plates 25 and 26 include a main body side plate 30 and an opening / closing side plate 38.
Since the open / close side plate 38 is opened downward, the guide plate 26 is placed in the open position at the same time, and the first roller pair 23, 27 and the second roller pair 24, 20 are also crimped. It will be canceled and it will be possible to deal with internal inspections and repairs when the sheet is not conveyed properly. The above is the description of the transfer device having the opening / closing mechanism that has been conventionally seen.

[Problems to be Solved by the Invention]

The conventional technique as described above has the following problems. Since the upper guide plate 25 is fixed to the main body side plate 30 and the lower guide plate 26 is movable, a paper conveyance device such as a copying machine is usually located on the bottom side of the copying machine, and thus jammed paper that has failed to be conveyed. Contrary to the fact that it is desirable to be able to operate the upper part of the copying machine for taking out, internal inspection, repair, etc.,
The range of application is limited and it is difficult to operate. Since the mechanism and structure of the conventional example has a stable function and structure when the pressure release of the roller and opening of the guide plate are performed, it is necessary to cover the instability by the reverse when used. Although the mechanism and structure of the conventional example do not clearly show the method of pressure-bonding the roller and the method of locking when the guide plate is set at a predetermined position, there is a drawback in that it cannot be performed simply and becomes unstable and complicated. Since it is difficult to increase the length of the upper and lower guide plates, it is difficult to increase the distance between the rollers to a certain extent. Since the open fulcrum of the guide plate is aligned with the roller axis, the distance between the guide plates on the fulcrum side when opening is small, making it difficult to remove jammed paper on the fulcrum side. The present invention has been made in view of the drawbacks of the above-described conventional example, and it is an object of the present invention to provide a transport device that improves the accuracy of the position of the transport roller, ensures functional safety when the transport device is used, and facilitates operation. Has an aim.

[Means for solving problems]

As a means for solving the above problems, facing the conveying path for conveying the sheet-like object, the pair of rollers 2, 3 are arranged,
The shaft of at least one roller 2 is the oval hole 1a of the body side plate 1.
And a first conveying means which is rotatably supported by the elastic member 11 so as to be pressed against the other roller 3 by pressing the elastic member 11 and a predetermined interval from the first conveying means. 15,1
The upper and lower paired rollers 4 and 5 are arranged in the conveying path formed by 6, the shaft of at least one roller 4 is pivotally supported by the oval hole 17a, and the elastic member 13 urges the roller to press the other roller. The upper guide plate 15 is attached to the second conveying means which is rotatable with one end as an axis together with the upper roller 4 which is pivotally supported by the upper guide plate 15 and the pair of rollers 2 and 3 of the first conveying means. By acting directly or indirectly, the pair of rollers 2 and 3 are separated from each other, and the other end is attached to one end fixed to the main body side plate 1,
A first rotating member 6 having a tumbler spring 12 which is biased in a pressing direction or a separating direction of a few, and a first rotating member 6 which is connected to the first rotating member 6. And a second rotating member 7 for moving the upper guide plate 15 of the second conveying means and the upper roller 4 according to the rotation of the first conveying member. The sheet conveying path can be opened by separating the pair of rollers 2 and 3 of the conveying means and rotating the second rotating member 7 to separate the upper guide plate 15 from the upper roller 4. This is achieved by the sheet conveying device.

【Example】

An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a side view showing the contact state of the transport rollers during normal operation, FIG. 2 is a side view showing the spaced state of the transport rollers, and FIG. 3 is a sectional view illustrating the spaced state of the second transport rollers.
The open state is shown by a broken line. FIG. 4 is a perspective view showing details of the ring and the roller bearing. A sheet conveying device of the present invention will be described based on an embodiment shown in the drawings. As shown in FIGS. 1 to 3, both ends of the first conveying right roller 2 and the first conveying left roller 3 which are the first conveying means are supported by fitting respective bearings into the shaft holes of the main body side plate 1. The rings 2a and 3a are slidably engaged between these bearings and the tensioning rings 2b and 3b engaged with the shaft ends of the first transport right roller 2 and the first transport left roller 3, respectively, and the rotation is not possible. You are free. Since the bearings of the first transport right roller 2 and the first transport left roller 3 have the same dimensions, and the rings 2a and 3a have the same dimensions, the bearing 3t and the ring 3a of the first transport left roller 3 are shown in FIG. 4 as an example. I will explain. As shown in FIG. 4, the bearing 3t has a large diameter portion 3p, 3r and a small diameter portion 3q, and a two-way cutout portion 3s. The bearing 3t is inserted into the oval-shaped hole 1b in the side plate 1 of the main body and is positioned at the same time as the rotation stop by the two-way mounting. On the other hand, the bearing (not shown) of the first conveying right roller 2 is inserted into the oval hole 1a (FIG. 1) of the main body side plate 1. This oval hole 1a is long in the lateral direction, and the bearing has a degree of freedom in the lateral direction. A spring 11, which is an elastic member that winds the bearing and the bearing 3t, presses the bearing along the oval hole 1a, and the first conveyance right roller 2 is the first conveyance left roller 2 and the first conveyance left roller is the first conveyance left roller 2. Press on 3. Therefore, the first conveyance right roller 2 supported by this has a lateral degree of freedom. The first conveying right roller 2, the bearing and the ring 2a are axially positioned by the tension ring 2b. In addition, a small-diameter portion (not shown) of the bearing and a small-diameter portion 3q of the bearing 3t supporting the first conveying left roller 3 are urged by the ring-shaped spring 11 to the first conveying right roller 2 and the first conveying right roller 2. There is a pressing force between the first transport left roller 3. FIG. 1 shows a state where the first transport right roller 2 and the first transport left roller 3 are pressed (that is, used). The figure also shows when the upper roller 4 and the lower roller 5 (broken line), which are the second conveying means, are pressed. The opening / closing operation lever 6, which is a first rotating member, is pivotally supported together with the first transport left roller 3, the bearing 3t, and the ring 3a, and is axially positioned by the tension ring 3b so as to be rotatable. The opening / closing operation lever 6 is provided with an operation knob 6a, which is convenient for operating the lever with a fingertip. A dowel 6b is provided on the back side thereof, and the dowel 6b is fitted in the U-shaped groove 7b of the opening / closing auxiliary arm 7 which is the second rotating member and is pressed by the spring 7a. Further, there is a spring hook 6e at the center of the opening / closing operation lever 6, and a spring hook 6e is provided between the spring hook 6e and the spring hook 1e of the body side plate 1.
12, the spring tension acts counterclockwise around the shaft of the first conveyance left roller 3 and the stopper 9 opens and closes the operation lever 6
Is received and held. The opening / closing auxiliary arm 7 is fixed to the mounting shaft 8a of the upper guide plate 15 shown in FIG. 3 with a screw 8, and moves together when the opening / closing auxiliary arm 7 rotates counterclockwise. As described above, the upper guide plate 15 is lifted up and opened. A space (not shown) for rotating the upper roller 4 is formed in the center of the upper guide plate 15 in the depth direction, and a bearing frame rising portion 17 is provided in the vicinity thereof, and an oval hole for axially supporting the upper roller 4 therein. Provide 17a. In addition, the spring hook rising portions 15a, 1
The spring 13 is hooked on 5b, the upper roller 4 is held, and a pressing force is applied between the upper roller 4 and the lower roller 5. Therefore, FIG. 1 shows the first transport right roller 2, the first transport left roller 3, the upper roller 4, and the lower roller 5.
And are pressed against each other, showing the state during use. Also the second
The figure shows a state in which the opening / closing operation lever 6 is rotated clockwise by 90 ° as described above, and the first conveyance right roller 2, the first conveyance left roller 3, the upper roller 4, and the lower roller 5 are pressure-bonded. From the predetermined position of the open and upper guide plate 15 and lower guide plate 16,
The upper guide plate 15 is shown flipped up and opened. This is when the open / close operation lever 6 is rotated 90 ° clockwise.
Along with this, the opening / closing auxiliary arm 7 rotates counterclockwise to release the pressure contact between the upper roller 4 and the lower roller 5, and at the same time to open the guide plate 15. On the other hand, the cam portion 6c of the opening / closing operation lever 6 comes into contact with the ring 2a that slides on the first transport right roller 2, pushes the ring 2a rightward, and releases the pressure contact with the first transport left roller 3. Further, the spring 12 becomes a tumbler spring when the center point of the bearing 3t on which the opening / closing operation lever 6 is supported is raised, and presses the opening / closing operation lever 6 against the stopper 10,
The mechanism can be stably held. By rotating the opening / closing operation lever 6 in the counterclockwise direction as described above, the first conveyance right roller 2, the first conveyance left roller 3, the upper roller 4, and the lower roller 5 are pressed against each other in use, and The upper guide plate 15 and the lower guide plate 16 are also in predetermined positions, and are also locked by hitting the stopper 9 by the tumbler spring 12. Also, open and close the operation lever 6 clockwise,
When it is rotated until it hits the stopper 10, the first conveying rollers 2 and 3, the upper roller 4 and the lower roller 5 are as described above.
The present invention provides a convenient mechanism and structure for releasing the pressing force and separating it, and also for releasing the upper and lower guide plates 15 and 16 from predetermined positions and separating them to perform internal inspection and repair when the conveyance is defective.

【The invention's effect】

The sheet conveying device according to the present invention has the following effects. By operating the open / close operation lever at one location, the pressures of the rollers on the transport path are released, and at the same time, the guide plate is opened, making it easy to remove transfer paper, sheet materials, etc. when they are poorly transported. You can do it. During normal transport (when the transport rollers are pressed), when the transport rollers are separated, and when the guide plate is open, the tumbler springs are effectively used to provide a stable mechanical structure, so there is no concern and no lock member is required. I am trying. In addition, when the guide plate is opened, the movable part can have a large opening angle on the upper surface, which has the great advantage that internal inspection and repair can be easily performed, including the above-mentioned removal of jammed paper when conveyance is defective. There is. The present invention has an advantage that it can be used for both large and small devices.

[Brief description of drawings]

FIG. 1 is a side view showing a state in which the conveying roller is pressure-bonded during normal operation of the conveying device and a guide plate is set to a predetermined position, and FIG. 2 shows a state in which the conveying roller of the conveying device and the guide plate are opened. The side view shown in FIG. 3, FIG. 3 is a cross-sectional view showing the disposition of the guide plate with the main body side plate removed, FIG. 4 is a perspective view showing the structure of the ring and the roller bearing portion, and FIG. FIG. 6 is a perspective view showing a normal operation time of FIG. 6, and FIG. 6 is a side view showing a time when the transfer roller and the guide plate of the conventional transfer device are opened. 1 ... main body side plate 2 ... first transport right roller 3 ... first transport left roller 4 ... upper roller (second transport means) 5 ... lower roller (second transport means) 2a, 3a, 4a, 5a ...... Ring 6 ...... Opening / closing operation lever (first rotating member) 7 ...... Opening / closing auxiliary arm (second rotating member) 11,13 ...... Spring (elastic member) 12 …… Tumbler spring (spring) 15 ...... Upper guide plate 16 …… Lower guide plate

Claims (2)

[Claims] 1. A pair of rollers 2 and 3 are arranged so as to face a conveying path for conveying a sheet-like material, and at least one of the rollers 2 is pivotally supported by an oval hole 1a of a main body side plate 1, and an elastic member 11 is used. A first conveying means that is urged to come into pressure contact with the other roller 3, and a conveying path formed by two upper and lower guide plates 15 and 16 arranged at a predetermined distance from the first conveying means. Top-bottom pair roller
4 and 5 are arranged, and at least one of the rollers 4 has an oval hole 1
The first guide plate 15 is pivotally supported by 7a and is urged by the elastic member 13 so as to come into pressure contact with the other roller, and the upper guide plate 15 is rotatable with one end as an axis together with the upper roller 4 pivotally supported by the upper guide plate 15. The second conveying means and one of the paired rollers 2, 3 of the first conveying means act directly or indirectly to separate the paired rollers 2, 3 from each other,
A first rotating member 6 having a tumbler spring 12 whose other end is fixed to one end fixed to the main body side plate 1 and which is urged in the pressing direction or the separating direction of the pair of rollers 2 and 3; A second rotating member 7 which is connected to the first rotating member 6 and moves the upper guide plate 15 and the upper roller 4 of the second conveying means in accordance with the rotation of the first rotating member 6. When the first rotating member 6 is rotated, the pair of rollers 2 and 3 of the first conveying means are separated from each other and the second rotating member 7 is rotated, and the upper guide plate 15 and the upper roller are formed. A sheet conveying device characterized in that the sheet conveying path can be opened by separating 4 from each other. 2. The sheet conveying apparatus according to claim 1, wherein the center of rotation of the first rotating member 6 and the center of the bearing of the first conveying means are aligned with each other.