JPH0219058B2 - - Google Patents

Description

[Detailed Description of the Invention] Conventionally, an automatic paper sorting assisting device for feeding stacked paper has provided two rows (two holes) of communicating holes in a support body and fitted a paper suction cylinder that moves vertically with a spring. Then, by vertical movement of the two-hole paper suction cylinder, when the automatic lifting due to paper suction stops, the first hole side is brought into matching communication with the perforation leading to the outside, and the intake air on the first hole side is released. , Relating to a means for causing a decompression of intake air on the other hole side based on the release, promoting the release of all paper absorption, and thereby performing rotor paper feeding (see Japanese Patent Publication No. 49-32364)
However, the function of this two-hole device is that one hole side immediately releases paper suction when suction is stopped, but the other hole side is released under reduced pressure of suction.
A strong paper suction resistance remains against the rotor paper feed, making the paper feeding process less smooth.Also, if the start of paper feeding is adjusted to the timing when the paper suction resistance weakens, the paper feeding speed will decrease by that amount. In addition, the entire mechanism of conventional single-hole devices is complicated and large, and
Again, there are drawbacks such as strong paper absorption resistance and poor paper feeding operation.

The present invention reliably eliminates the above-mentioned conventional drawbacks, and has a configuration in which large and small double pipes are combined and fitted to the support body, so that the suction force for absorbing paper is increased by the cylinder body of the outer cylinder. The strong paper absorption force of the area is strong and reliable, and when the rotor feeds the paper, the large paper absorption force is automatically converted to the small paper absorption force of the small area of the small diameter outer cylinder.
The rotor paper feeding work is made very light and easy with less suction resistance for the paper to separate from the paper, and it is possible to speed up the cylinder paper handling by automatically converting the large and small suction forces without any unreasonable force. By making the mechanism reliable and easy, the manufacturing is simplified by making it a thimble with a single hole type mechanism, and the device is made smaller and more economical.The above-mentioned drawbacks of the conventional two hole device are eliminated, and failures are prevented. In addition, the paper suction port of the cylinder body is enlarged to ensure stable and strong paper suction over a wide area in the wide intake groove. Depending on the material, the paper that is sucked into the paper may be wrinkled due to strong suction at the part that hits the cylinder peripheral wall that forms the concave groove, and the defect that results in wrinkled paper is removed from the suction concave groove. By providing a structure that provides auxiliary ventilation, the purpose is to eliminate wrinkled paper and ensure orderly and reliable paper sorting. A stepped circular hole is passed through the chamber, an intake passage from the vacuum pump is opened in the chamber, a wide ventilation hole is bored in the center of the bottom wall of the circular hole, and a wide ventilation hole is drilled in the center of the bottom wall. A wide suction groove with a stepped width that communicates with the ventilation hole of an appropriate shape is provided, and slits that communicate with the outside are dotted on the bottom wall of the lower end of the cylinder that forms the auxiliary small holes that communicate with the inside of the cylinder, or the groove that forms the groove. A cylinder tube of a required length that protrudes downward from the circular hole with the upper part as a stopper edge is inserted so as to be able to slide up and down, and a ventilation main body leading from the intake passage to the suction groove of the cylinder body is inserted. The passageway is inserted into the ventilation chamber from the covering cover plate toward the center of the cylinder body, and a small-diameter ventilation hole is opened toward the ventilation chamber, and the cylinder body is moved up and down by the vertical movement of the cylinder body. A fixed ventilation lid body is provided with a ventilation pipe of a required length and a small diameter that allows the wide ventilation hole to fit in and out, and a coil spring is fitted between the cylindrical body and the lid plate. The trachea is covered by the spring movement of the cylindrical body so that the wide vent hole of the cylindrical body can be opened and closed at the distal end, and the ventilation sub-ventilation related to the path from the intake path to the small diameter vent hole of the ventilation pipe is prevented. The large air intake in the main path and the secondary path can be connected by opening and closing the wide ventilation hole of the cylinder body related to the double combination fitting pipe to the small diameter ventilation pipe. It is characterized by automatic conversion between the small intake air and the small intake air. An example of the embodiment of the present invention will be described with reference to the drawings. A ventilation chamber 2 is provided, and an air intake path 4 is opened into the upper part of the chamber 2 and communicates with the vacuum hose 3 from the main body 1.
A stepped circular hole 6 in which a cylindrical metal 5 is fitted is vertically passed through from the center bottom of the chamber 2 to the bottom surface of the main body 1,
A cylinder with an upper opening and a bottom is provided in the cylindrical hole 7 of the metal 5, and a wide vent hole 9 is provided in the center of the bottom wall 8, which is slid into the cylindrical hole 7.
A wide suction mouth recessed groove part 10 with a recessed step that communicates with the hole 9 of an appropriate shape is provided around the hole 9, and a required number of auxiliary small holes 20 or the recessed groove part 10 that communicate with the inside of the cylinder are provided in the bottom wall 8 part around the hole 9. Slits 21 (see FIG. 5) communicating with the outside are dotted in the circumferential side wall 12 of the lower end of the cylinder forming the cylinder, and a stopper edge 11 is provided at the upper opening edge to come into contact with the upper surface of the metal 5 in the chamber 2. A cylindrical body 12 of a required length that protrudes downward to a considerable length below the metal 5 is fitted so as to be able to slide up and down. A vent hole 15 having the same length as the cylinder body 12 and having a small diameter is opened downward from the center bottom of the step part 14 into which the cylinder body 13 is fitted while keeping the cylinder body 13 around the outside of the step part 14. A fixed ventilation lid body 17, which is made up of a series of small-diameter ventilation pipes 16 that fit through the ventilation holes 9 in a closed-hole manner, is attached to the bottom wall 8 of the cylindrical body 12.
A coil spring 18 is interposed and fitted between the bottom surface of the stepped portion 14 of the lid body 17, and the ventilation pipe 16 is passed through the spring 18 so that the tip of the pipe 16 is connected to the metal 5.
The cover is constructed so that it protrudes slightly downward.

In the figure, reference numeral 19 indicates a connecting member that connects the air intake path 4 of the main body 1 and the vacuum hose 3, K indicates a holding claw that suppresses the rear end of the stacked paper P, and P' indicates a separated paper that has been sucked.

Note that the stepped portion 14 of the lid 17 is a design feature; the stepped portion 14 is omitted, and the above-mentioned narrow-diameter ventilation pipe 16 is provided directly in the center of the lid plate, and the ventilation hole 15 is used for ventilation. It can be designed to open into the room 2.

In addition, the small-diameter ventilation pipe 16 and the cylinder body 12
As shown in FIGS. 6 to 8, in addition to the above-mentioned illustrations, embodiments of the combination fitting with the cylinder body 12
If the distal end of the vent pipe 16 can open and close the wide vent hole 9 of the cylindrical body 12 by the vertical movement of In the case of an eye (Fig. 7) or a short eye (Fig. 8) that fits into the hole, the tip is finely stepped and the air hole 9 is closed on the stepped surface. In short, the ventilation pipe 16 is subject to various design changes as long as the wide ventilation hole 9 can be opened and closed at the tip of the ventilation pipe 16 when the cylinder body 12 moves up and down. Become.

Further, depending on the case, the intake passage 4 provided from the main body 1 may be opened to the ventilation chamber 2 from the lid 17 instead of from the main body 1.

Also, since the cylindrical metal 5 into which the cylinder body 12 is fitted is only a collar for the vertical movement of the cylinder body 12, it can be omitted and the stepped circular hole 6 can be adjusted to the diameter of the cylinder body 12. Alternatively, the cylindrical body 12 may be directly fitted into the vertical hole. In addition, if necessary, the diameter of the ventilation pipe 16 is made slightly smaller than the diameter of the ventilation hole 9, and the clearance form is designed to create a slight gap 22 between the ventilation pipe 16 and the ventilation hole 9. 22 may be replaced by the auxiliary small hole 20 (FIG. 6).

Since the present invention is configured as described above, the cylinder body 12 slides down inside the cylindrical hole 7 of the cylindrical metal 5 by the coil spring 18, and the stopper edge 11 comes into contact with the upper surface of the metal 5, and the cylinder body 12 slides down by the coil spring 18. 1
The lower part of the metal 5 protrudes below the metal 5 and is in a stopped state.

In this case, the intake air by the vacuum pump is as shown by the arrow in FIG. In the main ventilation path of the intake groove 10, a large amount of air is taken in from the groove 10 leading to the wide ventilation hole 9, and at the same time, a small diameter ventilation hole of the narrow ventilation pipe 16 located inside the cylinder body 12 is carried out. 15 also passes through the ventilation chamber 2 and connects with the small intake air of the ventilation sub-path leading to the intake path 4.
It goes without saying that the cylinder body 12 springs down due to the spring pressure of the coil spring 18 due to the simultaneous intake of air from the main and secondary passages through the one wide ventilation hole 9 of the cylinder body 12. , When the cylinder body 12 becomes an upwardly blocking cylinder due to the paper suction blockage of the suction port as will be described later, even when the ventilation is changed to only through the secondary passage from the small-diameter ventilation hole 15 of the ventilation pipe 16, the cylinder body In the relationship between the non-negative pressure inside the body 12 and the ventilation through the ventilation hole 15, a spring drop also occurs due to the spring force. Then, the support body 1 is moved against the upper rear end of the piled paper P, and the cylinder body 12 is lowered by a spring.
When the stacked paper P is adjusted and set at a position where paper suction is performed in the wide suction groove groove 10 that communicates with the wide ventilation hole 9, the intake air of the cylinder body 12 that has been lowered by the spring is drawn into the ventilation hole 9. Since the paper is absorbed by the concave groove 10 that leads to the vent hole 9, the paper is sucked into the wide concave groove 10 and becomes a shape with a large suction force over a wide suction area. An auxiliary small hole 20 that communicates with the inside of the cylinder is formed in the surrounding bottom wall 8, or a slit 21 is formed in the peripheral side wall 12' of the lower end of the cylinder.
As a result, the ventilation holes 9 perform strong paper absorption due to the soft flow of ventilation from the small holes 20 or slits 21 into the groove portion 10.
Since the suction force near the periphery in the groove 10 is relaxed, the paper surface that is sucked into the groove 10 is gently sucked into the groove 10 except for the part that is strongly attracted to the ventilation hole 9. As a result, there is no need to worry about wrinkles caused by the strong suction into the concave groove 10 when the paper comes into contact with the cylinder lower circumferential side wall 12', regardless of the paper quality. When sucking paper over a wide area in the wide suction groove part 10 due to the large suction force of the wide ventilation hole 9, the paper can be sucked in an orderly and reliable manner without damaging the suction paper surface at all.

When the ventilation hole 9 of the cylinder body 12 is blocked by this absorbing paper, the cylinder cylinder body 12 will have a rising force greater than the spring pressure due to the strong intake force of the two-way intake.
The paper rises as it absorbs, and due to its strong adsorption, the stacked paper P
The paper will be reliably separated from the bottom paper. In this case, although not shown, a well-known air blower is used to
By blowing air to the rear end, paper separation is performed up to the front end of the paper, ensuring that each sheet can be separated one by one.

Then, the cylindrical body 12 automatically rises in a paper-absorbing state,
When the wide ventilation hole 9 is fitted into the tip of the small diameter ventilation pipe 16 of the lid body 17 and becomes closed, the intake air from the ventilation hole 9 is cut off, and the paper is not absorbed by a large amount of air taken in a large area. It is opened, but the absorbent paper is vent pipe 1
The paper is automatically converted to a light absorbent paper in a small area due to the small suction force in the secondary ventilation path in the small diameter ventilation hole 15 of No. 6.

This light converting paper absorption in a small area makes the paper very easy to separate compared to rotor paper feeding, so rotor paper feeding can be carried out easily with small paper feeding force and small resistance.

The rise of the cylindrical body 12 is stopped when the stopper edge 11 hits the bottom surface of the stepped portion 14 of the lid 17, and waits for the completion of rotor feeding of the separation paper P'.

When the cylindrical body 12 rises to the highest level, communication between the cylindrical body 12 and the ventilation chamber 2 is cut off, and the main ventilation passage is completely closed (see FIG. 2). next,
When the separation paper P' separates from the small-diameter ventilation hole 15 of the ventilation sub-path due to paper feeding and the sub-path opens, the negative pressure inside the cylinder body 12 is released and the cylinder body 12 is quickly automatically lowered by the spring force as described above, paper absorption in the wide ventilation hole 9 starts, and a strong paper absorption action is started, resulting in large suction and large area in the wide suction groove 10 related to one hole intake. Reliably and smoothly assisting in paper sorting is repeated continuously and at high speed.

In this way, in the device of the present invention, due to the vertical movement of the spring as the cylinder body 12 opens and closes the air intake, the suction of the piled paper P due to the large area and large intake air in one cylinder hole is instantaneously reduced to the small hole in the ventilation sub-channel. As a result of automatic conversion to light paper absorption with suction air, rotor feeding of paper with this small absorption force is reliably and smoothly carried out with a very small paper feeding force because the absorption resistance is very low. Since the separation is good, neither the paper suction section nor the paper feeding section is subjected to any strain, so there is no malfunction of related equipment, and with durable use, safe paper separation assistance and rotor paper feeding work are possible.
In addition, by utilizing the mutual conversion of large and small intake forces based on the combination and fitting mechanism of two types of ventilation cylinders, it is possible to achieve reliable and powerful paper separation and a very nimble rotor paper feeding that does not leave strong suction force during paper feeding. It guarantees the work and reliably eliminates the defects of the conventional two-hole device, which has strong adsorption residue, and the one-hole device has a simple mechanism and is easy to manufacture, so it is very economical at low cost. Not only is it possible to provide a device with excellent performance, which is very convenient, but also the wide suction groove 10 has a wide area for reliable paper suction, and auxiliary ventilation is provided to the inside of the groove 10, making the suction of the paper soft. As a result, suction wrinkles on the paper surface can be eliminated, and therefore,
It can ensure normal paper suction without damaging the paper surface at all, and the simplification of the mechanism allows for miniaturization, with little residual adsorption force, and the instantaneous change in intake force allows the cylinder to move up and down at high speed. This has excellent effects such as increasing the speed of cylinder paper handling and contributing to speeding up paper feeding operations.

[Brief explanation of drawings]

The drawings show an embodiment of the device of the present invention,
Fig. 1 is a longitudinal cross-sectional view of the cylinder body in a descending paper-absorbing state with a part of the supporting body omitted, and Fig. 2 is a longitudinal cross-sectional view of the same cylinder body when it stops rising.
Fig. 3 is a bottom view of the combination of the cylinder body and the vent pipe section, Figs. 4 and 5 are bottom views of other embodiments of the cylinder body, and Figs. FIG. 6 is a partial cross-sectional view showing other embodiments of the vent pipe for the air hole portion; FIG. 6 shows the clearance form, FIG. 7 shows the long form, and FIG. 8 shows the short form. 1... Support body, 2... Ventilation chamber, 3... Vacuum hose, 4... Intake path, 6... Step circular hole, 8
...Bottom wall, 9...Wide ventilation hole, 10...Socket groove, 11...Stopper edge, 12...Cylinder body, 12'...Cylinder lower end circumferential side wall, 13...Spacing part,
14...Step part, 15...Small diameter ventilation hole, 16...
...Vent pipe, 17...Fixed ventilation cover, 18...Coil spring, 20...Auxiliary small hole, 21...Slit.

Claims (1)

[Scope of Claims] 1 (a) A ventilation chamber 2 and a stepped circular hole 6 are vertically passed through the support body 1 from the center bottom of the chamber 2, and an air intake passage 4 from a vacuum pipe 3 is opened in the chamber 2. For the circular hole 6, a wide vent hole 9 is bored in the center of the bottom wall, and around the vent hole 9, a wide suction groove 10 with an appropriately shaped step leading to the vent hole 9 is provided. The bottom wall 8 is dotted with slits 21 that communicate with the outside of the cylinder lower end peripheral side wall 12 forming the auxiliary small hole 20 that communicates with the inside of the cylinder or the concave groove 10, and the upper part is formed with a stopper edge 11.
A main ventilation path leading from the intake passage 4 to the inlet groove 10 of the cylinder body 12, into which a cylinder cylinder body 12 of a required length protruding downward from the circular hole 6 is inserted so as to be able to slide up and down; (b) The center of the cylinder body 12 is connected to the ventilation chamber 2 from the center bottom of the stepped portion 14 that is inserted into the ventilation chamber 2 while keeping the gap 13 around the upper opening of the ventilation chamber 2. The required length is such that the small-diameter ventilation hole 15 inserted toward the inside opens toward the ventilation chamber 2, and the wide ventilation hole 9 of the cylindrical body 12 is opened and closed by the vertical movement of the cylindrical body 12. A fixed ventilation lid body 17 with a small diameter ventilation pipe 16 connected thereto,
A coil spring 18 is fitted between the cylinder body 12 and the bottom surface of the stepped portion 14 of the lid body 17 to close the ventilation pipe 16.
The wide ventilation hole 9 of the cylinder body 12 is covered at its tip so that it can be opened and closed by lifting and lowering the cylinder body 12 due to the negative pressure and spring force, and the small diameter ventilation pipe 16 is removed from the air intake path 4. (c) A small diameter ventilation pipe 1 is provided at the wide ventilation hole 9 of the cylinder body 12 related to the double combination fitting pipe.
6. An automatic paper sorting assistance device for paper feeding, characterized in that the large intake air in the main passage and the small intake air in the secondary passage are automatically converted to each other by fitting and opening/closing the main passage.