JPH056287Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention separates and feeds paper sheets one by one from the storage section using a suction drum with a rubber material for feeding attached to a part of the outer periphery. This invention relates to a paper sheet separation and feeding mechanism.

[Conventional technology]

An example of a conventional paper sheet separation and feeding mechanism of this type will be explained with reference to FIG.

In the figure, 1 is a suction rubber, 2 is a suction drum,
A part of the outer periphery of the suction drum 2 is cut out, and the suction rubber 1 is adhesively held in the cutout.
Suction passage holes 4 are provided from the center of the suction drum 2 to the outer peripheral surface of the suction rubber 1.

3 is a hollow suction shaft attached to the center of the suction drum 2, and the suction hole 4 is connected to the suction shaft 3 through the suction shaft 3.
is connected to a vacuum pump (not shown), and the suction drum 2 is rotated together with the suction shaft 3 by a driving means (not shown).

Note that the suction shaft 3 is supported by a side frame (not shown).

Reference numeral 5 denotes a sheet-shaped medium, 6 a pick roller disposed above the suction drum 2, 7 a guide, and a portion of the outer periphery of each of the suction drum 2 and the pick roller 6 has a through hole provided in the guide 7. Alternatively, it protrudes toward the medium 5 stacked on the gate block 9 by a slit or the like.

The tip of the gate block 9 is formed into a wedge shape to assist the separation of the medium 5 by the suction drum 2.

Reference numeral 8 denotes a pressurer which is moved horizontally by means not shown to press the medium 5 on the gate block 9 toward the suction drum 2 and picker roller 6 side. Thus, a storage section for storing the medium 5 is configured.

10 and 11 are pulleys arranged below the gate block 9; 12 is a separation belt for preventing the medium 5, which is wound around the pulleys 10 and 11 so as to come into contact with the suction drum 2, from running in a heavy manner; 13; is in pressure contact with the suction drum 2 and the separation belt 1
A clamp roller 14 sends the medium 5 separated by 2 to a transport section (not shown), and a guide 14 also serves to peel off the medium 5 from the suction rubber 1 of the suction drum 2.

Next, the operation of the above-mentioned mechanism will be explained.

The medium 5 accumulated on the gate block 9 is moved to the suction drum 2 and the picker roller 6 by the pressurer 8.
In the state of being pressed to the side, the suction drum 2 and the picker roller 6 rotate in a predetermined direction, and at the same time, negative pressure is applied to the suction hole 4 by a vacuum pump (not shown).

As a result, the medium 5 is sent downward by the picker roller 6, and at the same time is attracted to the suction rubber 1 by the suction hole 4, and is fed out between it and the separation belt 12.

The separation belt 12 separates the medium 5 that is not in direct contact with the suction rubber 1 when a plurality of mediums 5 are fed out, overlapping the suctioned medium 5.

Therefore, only one medium 1 is sent between the suction drum 2 and the clamp roller 13 by the rotation of the suction drum 2, and is held between the two, and is sent by the rotation of both.

The medium 5 sent by the suction drum 2 and the clamp roller 13 is transferred to the suction drum 2 by a guide 14.
It is peeled off from the suction rubber 1 and fed to a transport section (not shown).

[Problem that the invention attempts to solve]

However, in the conventional media separation and feeding mechanism described above, when the suction rubber wears out and needs to be replaced, the suction shaft must be removed from the side frame and the entire suction drum must be replaced, which makes replacement difficult. This has problems in that it is time consuming and replacement costs are high.

The present invention was developed to solve these problems, and it is possible to improve the workability and reduce the replacement cost for replacing the suction rubber, and to easily perform highly accurate assembly. The object of the present invention is to realize a medium separation and feeding mechanism that can reliably obtain the desired suction performance.

[Means to solve the problem]

In order to achieve this object, the present invention brings the medium stored in the storage section into contact with a suction drum having suction holes, rotates the suction drum, and suctions the medium through the suction holes. 1
In a medium separation and feeding mechanism that separates and feeds sheets one by one, the suction drum has a main body having a notch formed in a part of the outer periphery, a recessed part in the notch, and a suction hole in the recessed part. , a U-shaped attachment body that fits into the notch, a suction hole connected to the suction hole of the main body, and a cylindrical fitting part that surrounds the suction hole protrudingly formed on the back side. The suction rubber is held inside the attachment body so that the fitting part protrudes from the back surface of the attachment body, and the attachment body is fitted into a notch in the main body to remove the suction rubber. By fitting the fitting part into the recess of the main body, the suction holes of the suction rubber and the main body are connected to each other, and the mounting body is fixed to the main body with a screw.

[Effect]

With this structure, when the suction rubber becomes worn out and needs to be replaced, the present invention allows the suction rubber to be removed from the notch in the main body by loosening the screw that fixes the mounting body to the main body. , by fitting a mounting body holding another new suction rubber into the notch of the mounting body, and fitting the fitting part of the suction rubber into the recess of the main body, the suction holes of the suction rubber and the main body are closed to each other. After connecting, the suction rubber is replaced by fixing the mounting body to the main body with screws.

Therefore, with this, there is no need to replace the suction drum as in the past, and only the mounting body holding the suction rubber can be replaced by operating the screw, improving work efficiency when replacing the suction rubber. At the same time, it is possible to reduce the replacement cost.

In addition, when fitting the mounting body holding the suction rubber into the notch of the main body, the fitting part of the suction rubber and the recess of the main body are fitted, so that the suction holes of the suction rubber and the main body can be positioned with respect to each other. This makes it easy to assemble with high precision.Furthermore, when the mounting body is then fixed to the main body with screws, the fitting part fits tightly into the recess without any gaps, ensuring that the desired result is achieved. Provides suction performance.

Furthermore, by fitting the fitting portion of the suction rubber into the recessed portion of the main body, the attachment body can be temporarily fixed, so that workability is improved from this point as well.

〔Example〕

Examples will be described below with reference to the drawings.

1 is an exploded perspective view of a suction drum shown as an embodiment of the media separation and feeding mechanism according to the present invention, FIG. 3 is a side view of the suction drum shown in FIG. 1, and FIG. 4 is a side view of the suction drum shown in FIG. 1. FIG.

In these figures, 15 is a suction drum, and this suction drum 15 has a suction rubber 16 and a mounting body 17.
and a main body 18.

The suction rubber 16 is provided with a suction hole 24 that penetrates from the front side to the back side.
A cylindrical fitting portion 16a is formed protruding from the back surface of the suction rubber 16 so as to surround the suction rubber 4.

On the other hand, the mounting body 17 is formed into a substantially U-shape.

The suction rubber 16 is adhesively held inside the mounting body 17, and the fitting portion 16a of the suction rubber 16
protrudes from a through hole provided in the mounting body 17 to the back side thereof, and female threads 19 are further provided on the mounting body 17 so as to be located above and below this suction rubber 16.

Further, a notch 20 into which the attachment body 17 fits is formed by cutting out a part of the outer circumference of the main body 18, and a fitting portion of the suction rubber 16 is formed on the abutting surface of the notch 20. A recess 21 into which the suction rubber 16a is fitted, and female threads 22 located above and below the recess 21 are formed, and a suction hole 22 corresponding to the suction hole 24 of the suction rubber 16 is formed between the recess 21 and the center of the suction drum 15. A hole 24 is provided.

23 is a screw, and this screw 23 is connected to the female screw 19.
and 22, the mounting body 17 is attached to the main body 1.
8, thereby attaching the suction rubber 16 to the mounting body 1.
It is removably attached to 7.

In this case, the tightening force of the screw 23 is not applied to the suction rubber 16, and the portion of the suction rubber 16 held by the mounting body 17 is not deformed.

Furthermore, by fixing the mounting body 17, the fitting part 16a of the suction rubber 16 is brought into close contact with the recess 21 of the main body 18, and thereby the suction holes 24 provided in the suction rubber 16 and the main body 18 are connected to each other without any gaps. be done.

25 is a hollow suction shaft attached to the main body 18 of the suction drum 15 so as to be located in the center thereof, and the suction hole 24 is connected to a vacuum pump (not shown) via this suction shaft 26; Further, the suction drum 2 is rotated together with the suction shaft 3 by a drive means (not shown).

Note that the suction shaft 25 is supported by a side frame (not shown).

Next, the operation of the above-described configuration will be explained.

However, since the separation and feeding operation of the medium is performed in the same manner as in the conventional case, the explanation thereof will be omitted here, and the procedure for replacing the suction rubber 16 will be explained.

When the suction rubber 16 of the suction drum 15 is worn out and needs to be replaced, first remove the screw 23 and remove the mounting body 17 from the main body 18.

Then, the new attachment body 17 holding the unused suction rubber 16 with adhesive is fitted into the notch 20 of the main body 18, and the fitting portion 16a of the suction rubber 16 is fitted into the recess 21 of the main body 18.

As a result, the suction hole 2 provided in the suction rubber 16
4 and the suction hole 24 provided in the main body 18 are aligned, and at the same time, the mounting body 1
7 is temporarily fixed to the main body 18.

Thereafter, the screw 23 is screwed into the female threads 19 and 22 to fix the mounting body 17 to the main body 18, thereby completing the replacement work of the suction rubber 16. In this state, the suction rubber 16 and the main body 18 are The suction holes 24 are connected to each other without any gaps, and no air leakage occurs.

[Effect of idea]

As explained above, in the present invention, when the suction rubber of the suction drum is worn out and needs to be replaced, the screws that fix the mounting body to the main body are loosened, and the suction rubber is removed from the main body together with the mounting body. Remove the suction rubber from the notch, fit the attachment body holding another new suction rubber into the notch of the attachment body, and also fit the fitting part of the suction rubber into the recess of the main body, so that the suction rubber and the main body are mutually connected. After connecting the suction holes, the attachment body is fixed to the main body with screws, so that the suction rubber can be replaced.

Therefore, with this, there is no need to replace the entire suction drum as in the past, and only the mounting body holding the suction rubber can be replaced by operating the screws, which improves work efficiency when replacing the suction rubber. It is possible to obtain the effect that it is possible to improve the performance and to reduce the replacement cost.

In addition, when fitting the mounting body holding the suction rubber into the notch of the main body, the fitting part of the suction rubber and the recess of the main body are fitted, so that the suction holes of the suction rubber and the main body can be positioned with respect to each other. Because it is possible to perform the above-mentioned assembly, it is possible to easily assemble with high precision.Furthermore, when the mounting body is then fixed to the main body with screws, the fitting portion fits tightly into the recessed portion without any gaps. It is also possible to achieve the effect of reliably obtaining the desired suction performance.

Furthermore, by fitting the fitting portion of the suction rubber into the recessed portion of the main body, the attachment body can be temporarily fixed, so that the effect of improving workability can also be obtained from this point of view.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of a suction drum showing an embodiment of the present invention, Fig. 2 is a side view of a conventional example, Fig. 3 is a side view of the suction drum shown in Fig. FIG. 3 is a front view of the suction drum shown in FIG. 15...Suction drum, 16...Suction rubber, 16
a... Fitting part, 17... Mounting body, 18... Main body,
19... Female thread, 20... Notch, 21... Recess, 22... Female thread, 23... Screw, 24... Suction hole.

Claims (1)

[Claims for Utility Model Registration] The medium stored in the storage section is brought into contact with a suction drum having a suction hole, the suction drum is rotated, and the medium is suctioned by the suction hole, whereby one sheet of the medium is removed. In the medium separation and feeding mechanism that separates and feeds the suction drum, the suction drum has a main body having a notch formed in a part of the outer periphery, a recess provided in the notch, and a suction hole provided in the recess; The suction device has a U-shaped attachment body that fits into this notch, a suction hole that is connected to the suction hole of the main body, and a cylindrical fitting portion that surrounds the suction hole and is formed protruding from the back side. The suction rubber is held inside the attachment body so that the fitting part protrudes from the back surface of the attachment body, and the attachment body is fitted into a notch in the main body to allow the suction rubber to fit. A medium separation and feeding mechanism characterized in that the suction holes of the suction rubber and the main body are connected to each other by fitting the joint part into the recess of the main body, and the mounting body is fixed to the main body with a screw.