JPS623056B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Conventionally, an automatic paper sorting assisting device for feeding stacked paper has two holes in a vertical through hole of a support body leading to a vacuum pump in order to prevent double feeding of paper. A row of communicating holes are provided, and a suction cylinder that protrudes downward from the main body and moves vertically with a spring is fitted therein, and the vertical movement of the two-hole suction cylinder allows suction paper to be sucked under continuous suction. At the point when the automatic lifting stops, the one hole side is brought into matching communication with the perforation leading to the outside, the paper suction part is released on the one hole side, and based on this release, the intake air pressure is generated on the other hole side. The suction mechanism, which has a two-hole configuration, is complicated and troublesome to manufacture. In terms of function, paper suction is released immediately when suction is stopped on one hole side, but since the other hole side is released under decompression of suction air, suction resistance may remain strong and the paper feeding operation may lack smoothness. However, if the start of paper feeding is adjusted to the timing when the suction resistance is weakened, the paper feeding speed will be reduced by that amount.

The present invention eliminates the above-mentioned conventional drawbacks, and has a single-hole suction mechanism, which makes manufacturing easy and economical. Using the paper feeding force, smooth and complete paper absorption and release is performed.
As a result, the purpose is to provide a convenient automatic paper sorting assisting device that enables smooth and normal paper feeding work and speeds up the work efficiency.
A single communicating hole of the required length is provided protruding from the vertical circular hole of the supporting body leading to the vacuum pump disposed above the rear end of the stacked paper, and a single communicating hole is provided therein. A cylinder with a paper-absorbing nozzle with a suction cup attached directly below is horizontally fitted to the lower part of the pipe, and the nozzle tilts forward by rotation of the cylinder from the point where the second half of the nozzle touches to the front part. A window hole is provided at one location on the front periphery of the cylinder, and a window is provided at a location directly above the circumference of the cylinder that leads to the communicating hole and at a location on the lower half of the circumference by rotating the cylinder. A suitable ring spring is fitted to the nozzle from a partition wall provided at the rear of the notch, so that the cylindrical rotation of the nozzle is caused by the spring pressure. It is characterized in that a suction cylinder body in which the intake air in the cylinder is automatically controlled to open and close is fitted so as to be able to move vertically with a spring.

An example of the embodiment of the present invention will be described with reference to the drawings. An air passage connected to an air blowing pipe 1 from an air blowing mechanism is provided at a rear portion located above the rear end of stacked paper P behind the paper feed rotor R. The front side of the support main body 4 has an air blowing nozzle 3 installed below it to blow air to the upper paper at the rear end of the stacked paper P, and the lower part of the front part is stepped to be higher than the rear part. A large diameter ventilation chamber 6 with a vacuum hose 5 from a vacuum pump attached above the section.
A cylindrical suction cylinder 7 is provided in the center bottom of the chamber 6 and passes through a vertical circular hole 8 that can freely move up and down, and a stopper ring 9 is fitted to the upper end of the circular hole 8. The lower part is made into a rectangular part 10 at a length that considerably protrudes from the lower part of the circular hole 8, and a ventilation circular hole 11 is provided from the upper end to the rectangular part 10, and a circular hole is provided at the lower part of the square part 10 across the square part 10. 12, the circular hole 12 and the ventilation circular hole 11 are communicated with each other through a ventilation hole 13, and a cylinder 14 having the same hole diameter is provided inside the circular hole 12 with cylinder stop edges 15, 15 on the outer edges of the left and right holes. ′
A paper suction nozzle 1 has a length suitable for sucking each sheet P' of stacked paper P by attaching a suction cup 16 at the tip just below the circumference of the cylinder 14 so as to be rotatable.
7 is fitted over the range and width of the nozzle 17 tilting forward by the rotation of the cylinder 14 from the point where the rear half of the nozzle 17 touches to the front surface of the square part 10,
Notch cavity 18 that exposes a lower part of the cylinder 14
and a window hole 19 is bored in the rectangular part 10 at the center of the front circumference of the cylinder 14, and a hole that coincides with and communicates with the ventilation hole 13 is formed in the right upper part of the circumference of the cylinder 14 facing the nozzle 17. 20 and a suction cylindrical body 7 having perforations 21 formed in the lower half of the circumference offset from the 19 window holes and communicating with the window holes 19 from the inside of the ventilation hole 11 to the ventilation chamber 6. The coil spring 22 is inserted and loosely fitted so that the stopper ring 9 hits the bottom of the chamber and stops automatic descent,
Further, a concave groove portion 24 is formed in the rear part of the empty space 18, and a partition wall 23 surrounding the rear half of the nozzle 17 is provided therein.
The nozzle 1 is inserted from the concave groove portion 24 around the wall 23.
7, a suitable ring spring 25 such as a rubber band or coil having a spring force weaker than the sheet feeding traction force of the sheet feeding rotor R is fitted. 26 in the diagram
is a holding bar that holds down the upper surface of the rear end of the stacked paper P.

The blowing mechanism for blowing paper upward at the rear end of the stacked paper P may be installed directly on the support main body 4 as shown in the figure, or may be indirectly connected to the outside of the main body 4 if necessary. Although it may be omitted if necessary, there is no problem with the vertical movement of the suction cylinder 7 due to the vacuum action, but the speed of the vertical movement is better when the spring is present.

Since the present invention is configured as described above, if the device of the present invention is installed at a position above the rear end of the stacked papers P at the rear part of the paper feed rotor R, the upper area of the stacked papers P can be blown by the air blowing mechanism. When the paper ends of the paper P are separated from each other and the paper is fed, the operation of the device of the present invention reliably assists in the separation of each sheet of the stacked paper P.

Therefore, the operation of the present invention will be explained with reference to FIGS. 5 to 7. As the paper suction nozzle 17 becomes vertical due to the spring pressure of the ring spring 25, the nozzle 17
When the cylinder 14 to which the cylinder 14 is attached rotates and the perforation 20 just above its circumference communicates with the ventilation hole 13, the paper suction nozzle passes from the ventilation chamber 6 through the ventilation hole 11 of the suction cylinder 7 and the inside of the cylinder 14. 17, while the other hole 2 of the cylinder 14 matches the window hole 19.
1 is moved to a position below the window hole 19, and the perforation 21 is blocked by the wall surface of the circular hole 12 into which the cylinder 14 is fitted, so that the air intake by the vacuum pump is
Because it is carried out through the nozzle 17 with one hole communication,
The suction cylinder 7 descends through the vertical circular hole 8 toward the stacked paper P under its own weight and the downward pressure elasticity of the coil spring 22 (see FIG. 5), and the stopper ring 9 moves into the ventilation chamber 6. When the suction cup 16 stops descending when it hits the bottom of the stack, the suction cup 16 absorbs one sheet of stacked paper P, and the nozzle 17 port is blocked by the suction paper.
Under the vacuum action, the suction cylinder 7 is quickly sucked up against the coil spring 22 while still absorbing paper, and as a result, the rear part of the absorbent paper is separated from the lower paper, and the suction cylinder 7 is exposed to air blowing between the papers, ensuring that the front end Paper separation up to this point ensures that paper separation for individual sheets is assisted.

Then, as the cylindrical body 7 rises to absorb the paper, the front part of each absorbent sheet P' becomes floating due to the separation of air, and while the cylindrical body 7 is rising, the paper feed rotor R
The paper feeding operation for each sheet P' is started (see FIG. 6).

Because the spring force of the ring spring 25 is weaker than the paper feeding traction force of the paper feed rotor R during this paper feeding, the nozzle 17 adjusts to the tensile paper feeding force caused by the paper sucking and moving forward, and the ring spring 25 This causes the cylinder 14 to rotate forward in the cutout space 18, causing the perforation 20 just above the circumference to open into the ventilation hole 1.
3 and the ventilation hole 13 is covered by the cylinder wall, the suction action from inside the cylinder to the nozzle 17 is cut off, and at the same time, the other perforation 21 rotates from below toward the window hole 19. The nozzle 17 is connected to the window hole 19, and outside air flows into the nozzle 17 through this communication through the inside of the cylinder.
At that point, the paper absorption by the nozzle 17 is completely released (see FIG. 7).

In this way, with the paper feeding force from the paper feeding rotor R,
By tilting the paper suction nozzle 17 forward and rotating the cylinder 14 accordingly, the suction cut and the inflow of outside air are simultaneously automatically operated while the suction cylinder body 7 is rising to absorb paper, so that the paper suction and release is very quick and reliable. Therefore, normal paper feeding work is performed at an increased speed. Then, the nozzle 1
When paper suction is released from paper 7, the nozzle 17 is released from the paper feeding resistance.
4, the perforation 21 communicating with the window hole 19 is shifted downward and is blocked by the hole wall.
The inflow of outside air is cut off, and the perforation 20 directly above the
When the suction cylinder 7 communicates with the ventilation hole 13, the vacuum action changes again to the one-hole communication to the nozzle 17, and the suction cylinder 7 springs down as described above to move on to the next paper absorbing operation.

As described above, the present invention combines the tractive force against the rising paper suction by the paper feed roller R, and the automatic opening/closing control of the vacuum action by the tilting of the paper suction nozzle 17 and the rotation of the cylinder 14, which are both reliably and smoothly. The suction paper is released from the nozzle 17 without any bad suction resistance, and the suction cylinder body 7 is quickly and completely released in a short period of time when it rises. As a result, in the one-hole suction mechanism, Using the paper feeding force, the automatic paper sorting assisting performance for stacked papers is enhanced, and not only can the paper be fed quickly, but also the complete release of the fast paper absorption can speed up the cylinder movement of the cylinder 7. Therefore, the paper feeding speed increases accordingly, making it possible to perform normal paper feeding at high speeds, which is convenient, and compared to the conventional two-hole mechanism, it has higher performance, is easier to manufacture, and is more economical. effective.

[Brief explanation of the drawing]

The drawings show an example of the implementation of the present invention; FIG. 1 is a side view, FIG. 2 is a front view, FIG. 3 is a vertical side view of the suction cylinder, and FIG. 4 is a suction with the nozzle section cut away. The bottom view of the cylindrical body and FIGS. 5 to 7 are conceptual diagrams of the main parts of the arrangement showing the order of action. 4... Support body, 8... Vertical circular hole, 11... Ventilation circular hole, 12... Circular hole, 13... Ventilation hole, 14...
...Cylinder, 16...Suction cup, 17...Paper suction nozzle, 1
8... Notch void, 19... Window hole, 20, 21...
Perforation, 23... Partition wall, 24... Concave groove, 25...
...Ring spring, 7...Suction cylinder.

Claims (1)

[Claims] 1. With respect to the vertical circular hole 8 of the support body 4 that communicates with the vacuum pump disposed above the rear end of the stacked paper P behind the paper feed rotor R, the required length protrudes from the circular hole 8. A cylinder 14 is provided with a single communication hole, and a cylinder 14 with a paper suction nozzle 17 with a suction cup 16 attached directly below is horizontally fitted in the lower part leading to the hole, and the rear half of the nozzle 17 is A cutout space 18 is bored from the contact point to the front surface of the cylinder 14 so that the nozzle 17 can tilt forward by rotating the cylinder.
A window hole 19 is provided at one location on the front periphery of the
A perforation 20 that communicates with the communication hole portion is provided just above the circumference of the cylinder 14, and a perforation 21 that communicates with the window hole 19 by rotation of the cylinder is provided at the lower half of the circumference, and further, the nozzle 17
On the other hand, a suitable ring spring 25 having a spring force weaker than the paper feed traction force of the paper feed rotor R is fitted from the partition wall 23 provided at the rear of the notch space 18, and the nozzle 17 is moved by the weak spring pressure. An automatic paper sorting assisting device for paper feeding, characterized in that a suction cylinder body 7, in which intake air in the cylinder is automatically controlled to open and close by rotation of the cylinder during tilting, is fitted in a vertically movable manner with a spring.