Paper delivery device

Abstract

The present invention discloses a paper ejection device, relating to the field of automated office equipment, comprising an air nozzle 1 for blowing air into a temporary storage chamber to eject the paper in the chamber in a direction opposite to the direction in which it entered the chamber, a solenoid valve for controlling the air nozzle, and associated piping and air source. The present invention has the following beneficial effects: 1. The use of an anti-static partition and ionized air blowing paper ejection method effectively prevents static electricity generated by paper movement from adsorbing on the partition, thereby improving the success rate and efficiency of paper ejection; 2. The embedded partition installation method overcomes precision issues caused by installation errors, ensuring uniform and consistent gaps between each layer and ensuring accurate paper access.

Description

Technical Field

[0001] The present invention relates to the field of automated office equipment, and in particular to a paper discharging device. Background Art

[0002] Government agencies, courts, and large enterprises sometimes need to scan and archive older paper files or files from different periods. Due to improper storage or handling, these files can become disorganized. In these cases, manual sorting, organization, and sequencing are often performed before scanning and archiving. However, manual processing is slow and can lead to errors and even disorganization after long hours of fatigue.

[0003] To address the above-mentioned issues, automatic sorting devices have emerged. For example, authorized publication number CN110386498 B discloses a device for sorting out-of-sequence documents. This device sorts documents by depositing them in a designated temporary storage chamber in a storage unit, and then pushing the sorted documents out of the temporary storage chamber via a paper pusher. CN110834991B discloses a paper pusher mechanism comprising a temporary storage unit, at least one pusher, a first pusher drive unit, and a second pusher drive unit. The two pushers are used to push the documents out of the temporary storage unit.

[0004] The following technical problems exist in the prior art: the push rod in the paper pushing mechanism moves along the long groove in the temporary storage part to discharge the paper in the temporary storage cavity. When the paper pushing rod comes into contact with the paper, the paper may be stuck in the temporary storage cavity due to factors such as paper bending and curling, resulting in damage to the paper. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a paper discharge device that discharges the paper in the temporary storage cavity by blowing air into the temporary storage cavity through an air nozzle without any hard contact with the paper, thereby avoiding damage to the paper.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a paper discharge device for discharging paper from the temporary storage cavity in the sorting bin, the key lies in: including an air nozzle for blowing air into the temporary storage cavity and discharging the paper in the temporary storage cavity in the opposite direction of entering the temporary storage cavity, a solenoid valve for controlling the air nozzle, and matching pipelines and air sources.

[0007] Furthermore, the air nozzle is located outside the sorting bin, and includes an air nozzle body, an air connection hole provided on the air nozzle body, and an air outlet hole communicating with the air connection hole, and the diameter of the air outlet hole is smaller than the height of the temporary storage cavity.

[0008] Furthermore, the air outlet is inclined downward and the inclination angle α is 18°-22°.

[0009] Furthermore, two air nozzles are arranged side by side along the width direction of the temporary storage cavity, and the horizontal distance between each air nozzle and the corresponding edge of the temporary storage cavity is 1 / 4-2 / 5 of the width of the temporary storage cavity.

[0010] Furthermore, the sorting bin is connected to a lifting drive device driven by a servo motor.

[0011] Furthermore, the sorting bin includes a top plate, a bottom plate, two side plates and two baffles arranged parallel between the top plate and the bottom plate, a plurality of partition mounting tubes arranged between the top plate and the bottom plate, partitions, and connecting columns that pass through the partition mounting tubes and fix the top plate and the bottom plate to the upper and lower ends of the partition mounting tubes respectively with the help of connecting nuts. The partitions are limited in the limit grooves of the partition mounting tubes, and the distance between adjacent limit grooves is 3-10 mm.

[0012] Furthermore, embedded bosses matching the limiting grooves are provided at the four corners of the partition.

[0013] Furthermore, a baffle groove is provided on one side of the baffle close to the air nozzle, and a card slot that matches the baffle is provided on the baffle.

[0014] Furthermore, the partition is made of antistatic glass fiber board, carbon fiber or phenolic resin.

[0015] Furthermore, a photoelectric detection hole is provided on the partition.

[0016] The beneficial effects of the present invention are: 1. The use of anti-static partitions and ion wind blowing paper discharge method effectively solves the problem of static electricity generated by paper movement on the partition, thereby improving the success rate and efficiency of paper discharge; 2. The embedded installation method of the partition overcomes the accuracy problem caused by installation error, and the gap between each layer is uniform and consistent, ensuring the accuracy of paper storage and retrieval.

[0017] The present invention will be described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the paper discharge device of the present invention;

[0019] Figure 2 It is a structural schematic diagram of the sorting bin in the paper discharge device of the present invention;

[0020] Figure 3 This is a schematic diagram of the connection between the connecting nut and the connecting column in the paper discharge device of the present invention;

[0021] Figure 4 It is a structural schematic diagram of the partition in the paper discharge device of the present invention;

[0022] Figure 5This is a schematic structural diagram of a partition mounting tube in a paper discharge device of the present invention;

[0023] Figure 6 It is a schematic structural diagram of the air nozzle in the paper discharge device of the present invention;

[0024] Figure 7 It is a schematic diagram of the positions of the air nozzle and the sorting bin in the paper discharge device of the present invention.

[0025] In the accompanying drawings: 1. air nozzle, 1-1. air nozzle body, 1-2. air connection hole, 1-3. air outlet hole, 1-4. connecting hole, 2. solenoid valve, 3. top plate, 4. bottom plate, 5. side plate, 6. partition mounting tube, 6-1. limiting groove, 7. partition, 7-1. embedded boss, 7-2. photoelectric detection hole, 7-3. baffle groove, 7-4. groove, 8. baffle, 9. connecting nut, 10. connecting column, 11. lifting drive device, 12. photoelectric sensor, 13. quick connector. DETAILED DESCRIPTION

[0026] See attached Figure 1-7 The present invention provides a paper discharge device for discharging paper from a temporary storage chamber within a sorting bin. The device comprises an air nozzle 1 for blowing air into the temporary storage chamber to discharge the paper in a direction opposite to the direction in which it entered the chamber, a solenoid valve 2 for controlling the air nozzle 1, and associated piping and an air source. The air source is preferably an ionized air source, which can eliminate static electricity on the paper.

[0027] See attached Figure 2-5 The sorting chamber is connected to a lifting drive 9 driven by a servo motor. This drive 9 utilizes a screw-nut transmission structure, ensuring precise vertical movement of the sorting chamber under the servo motor's drive. Driven by this drive 9, the sorting chamber can be precisely raised and lowered, ensuring that each temporary storage chamber is connected to a paper entry channel or paper feeder, and positioned on the blowing side of the air outlet holes 1-3 of the air nozzle 1.

[0028] The sorting bin includes a top plate 3, a bottom plate 4, two side plates 5 and two baffles 8 arranged parallel to each other between the top plate 3 and the bottom plate 4, a plurality of partition mounting tubes 6 arranged between the top plate 3 and the bottom plate 4, a plurality of partitions 7, and connecting columns 10 that pass through the partition mounting tubes 6 and fix the top plate 3 and the bottom plate 4 to the upper and lower ends of the partition mounting tubes 6 respectively with the help of connecting nuts 9. A plurality of limiting grooves 6-1 are evenly arranged along the height direction of the above-mentioned partition mounting tubes 6, with the distance between adjacent limiting grooves 6-1 being 3-10 mm. The partitions 7 are limited within the limiting grooves 6-1 of the partition mounting tubes 6. In this embodiment, there are four partition mounting tubes 6, located at the four corners of the partition 7. Therefore, embedded bosses 7-1 that cooperate with the limiting grooves 6-1 are also provided at the four corners of the partition 7. This design can avoid occupying the effective area of ​​the partition 7 that can be used to form a temporary storage cavity, and can also form grooves 7-4 for limiting the inner side of the side plates 5. The upper and lower sides of the side panels 5 are connected to the top panel 3 and the bottom panel 4 respectively by bolts. Such a design can prevent the temporary storage chamber from leaking air when the air nozzle 1 is ejecting air, thereby affecting the paper discharge effect.

[0029] The partitions 7 can be arranged between the top plate 3 and the bottom plate 4 in 50-500 layers as needed, and the space between adjacent partitions 7 forms a temporary storage cavity. The thickness of the partitions 7 is preferably 0.5-1.5 mm and is preferably made of an antistatic material, such as antistatic glass fiber board, carbon fiber or phenolic resin.

[0030] In the prior art, the partitions 7 are often installed by inserting spacers onto the connecting columns 10 to achieve the designed spacing between adjacent partitions 7. In actual use, due to processing errors in the spacers, the cumulative errors caused by inserting multiple spacers will be very large. Since the spacers are installed at the four corners of the partitions 7, the partitions 7 will be in a twisted state after installation, which is not conducive to the entry and exit of paper into the temporary storage cavity. During the entry or exit process, the paper may bend or curl, which may damage the paper.

[0031] In the technical solution of the present application, the limiting grooves 6-1 are evenly arranged along the height scheme of the partition mounting tube 6, and the number thereof is designed to be greater than or equal to the number of partitions 7. During processing, the four partition mounting tubes 6 and the limiting grooves 6-1 thereon can be processed at the same time. The embedded bosses 7-1 at the four corners of all partitions 7 can be evenly embedded in the limiting grooves 6-1. After the installation of the sorting bin is completed, each partition 7 is very flat, which is convenient for the entry and discharge of paper. When the number of partitions 7 is large and the length of the partition mounting tube 6 is long, it can be spliced ​​by multiple mounting tubes. At this time, the top or bottom of the mounting tube located in the middle position is processed with a groove width of the limiting groove 6-1 to facilitate splicing.

[0032] To facilitate detection of paper in the temporary storage chamber, a photoelectric detection hole 7-2 is provided at the same position on all partitions 7. Photoelectric sensors 12 are provided above and below the photoelectric detection hole 7-2. The two photoelectric sensors 12, mounted on the frame, can detect the presence of paper in the temporary storage chamber through the photoelectric detection hole 7-2.

[0033] A baffle groove 7-3 is located in the middle of baffle 7, near the air nozzle 1. Baffle 8 is positioned within baffle groove 7-3 and includes a slot that mates with all of the baffles 7. The slot's width is the same as that of the retaining groove 6-1. Two baffles 8 are symmetrically positioned within baffle groove 7-3. In addition to supporting baffle 7, they also limit the movement of paper within the temporary storage chamber.

[0034] Through the inlaying cooperation between the embedded boss 7 - 1 and the limiting groove 6 - 1 , and the inlaying cooperation between the card slot and the partition 7 , each partition 7 can be stably supported, so as to facilitate the subsequent entry and discharge of paper.

[0035] See attached Figure 1 、 6 7, the air nozzle 1 is horizontally mounted on a frame (not shown) outside the sorting bin and comprises a nozzle body 1-1, an air inlet 1-2 provided on the nozzle body 1-1, an air outlet 1-3 communicating with the air inlet 1-2, and a connection hole 1-4 for adjusting the mounting position. The air inlet 1-2 is used to connect to a pipeline. In this embodiment, a quick-release connector 13 for connecting the pipeline is provided at the air inlet 1-2. After installation, the horizontal distance between the air outlet 1-3 and the end face of the sorting bin (the end face of the partition 7) is 1-5 mm. If the distance is too far, the airflow will not fully enter the temporary storage cavity formed by the two partitions 7. The diameter of the air outlet 1-3 is smaller than the height of the temporary storage cavity and the air outlet 1-3 is tilted downward at an angle α of 18°-22°.

[0036] The downwardly angled arrangement of the air outlet holes 1-3 ensures that the airflow from these holes first contacts the flat surface of the lower partition 7 of the temporary storage chamber. This allows the airflow to bounce up and down between the two partitions 7 as it moves within the temporary storage chamber. During this rebounding process, the airflow fully contacts the paper in the temporary storage chamber, eliminating static electricity while simultaneously lifting the paper and discharging it, achieving the desired paper discharge. The connecting holes 1-4 are elongated holes used to connect with bolts to secure the air nozzle 1 to the frame and adjust its horizontal distance from the sorting chamber.

[0037] The paper's entry into the temporary storage chamber is stopped by baffle 8. Since the width of the temporary storage chamber is wider than that of an A4 sheet, the final position of the paper after entering is not necessarily in the center of the chamber; it may be slightly to the left or right of the center, some distance from the side panels 5. To ensure smooth ejection of offset sheets, two air nozzles 1 are positioned side by side along the width of the temporary storage chamber, or the width of the A4 sheet. Each air nozzle 1 is positioned horizontally from the corresponding edge of the temporary storage chamber or the A4 sheet at a distance of 1 / 4 to 2 / 5 of the width of the temporary storage chamber. In this embodiment, the two air nozzles' blowing points are located 1 / 3 of the way from the edge of the A4 sheet when the width is centered in the temporary storage chamber. The air outlet holes 1-3 have a diameter of 1.5 mm and a tilt angle of 20°. In this embodiment, the gas source pressure is 3.5 bar, the outer diameter of the gas pipeline is Φ6 (the inner diameter is Φ4), the air jet time is 0.13 s, and the exhaust volume at Φ1.5 mm is 0.065-0.081 L, preferably 0.073 L. This air output can ensure that the paper is effectively discharged without being damaged.

[0038] The working process of the paper discharge device of the present invention is as follows: after obtaining the page number information of the paper, it communicates with the PLC, and controls the servo motor through the PLC to drive the sorting bin to move up and down to the corresponding temporary storage chamber. The paper enters the temporary storage chamber through the entry channel, and the storage of the paper with the page number is completed. The page number is repeatedly obtained and the temporary storage chamber is driven to switch until all the paper is stored and sorted. After the sorting of all the paper is completed, the system verifies whether the number of papers placed and the number of papers entering the bin are correct.

[0039] After the sorting is completed, the system switches to the paper discharge mode. The pneumatic system is started under the control of the PLC, the sorting bin is connected to the paper discharge channel, and then under the control of the solenoid valve 2, the two air nozzles 1 simultaneously spray ion airflow. The air nozzle 1 is fixed and the sorting bin moves up and down. Each temporary storage cavity is sprayed once. When the air nozzle 1 blows air, the entire temporary storage cavity will be filled with airflow. Under the action of the airflow, the paper is taken out. The left and right side plates play a guiding role in the paper discharge process. The paper is discharged horizontally into the collection box of the next link and is finally collected neatly and orderly.

[0040] The current layer of paper is discharged through airflow. This contactless paper discharge method effectively avoids the risk of paper damage and eliminates static electricity generated during paper movement, solving the problem of paper adsorbing on the upper and lower layers due to static electricity, thereby improving the paper discharge rate of each layer. When the current layer is completed, the servo motor drives the sorting bin to move down to the next layer. Once in place, the two air nozzles 1 start to spray again, ejecting all the paper in the sorting bin in sequence. A photoelectric sensor installed above the sorting bin detects whether there is any residual paper in the sorting bin. After the entire process is completed, the paper is sorted in order.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solutions of the present invention. They should all be included in the scope of the technical solutions claimed for protection by the present invention.

Claims

1. A paper discharge device for discharging paper from a temporary storage chamber in a sorting bin, characterized by: The present invention comprises an air nozzle (1) for blowing air into the temporary storage chamber and causing the paper in the temporary storage chamber to be discharged in the opposite direction of the direction in which the paper enters the temporary storage chamber, an electromagnetic valve (2) for controlling the air nozzle (1), and a matching pipeline and air source; the air nozzle (1) is located outside the sorting chamber, and comprises an air nozzle body (1-1), an air receiving hole (1-2) provided on the air nozzle body (1-1), and an air outlet hole (1-3) communicating with the air receiving hole (1-2); the diameter of the air outlet hole (1-3) is smaller than the height of the temporary storage chamber; the air outlet hole (1-3) is tilted downward, and the tilt angle α is 18°-22°; The sorting bin is connected to a lifting drive device (11) driven by a servo motor; The sorting bin comprises a top plate (3), a bottom plate (4), two side plates (5) and two baffles (8) arranged in parallel between the top plate (3) and the bottom plate (4), a plurality of partition mounting tubes (6) arranged between the top plate (3) and the bottom plate (4), partitions (7), and connecting columns (10) passing through the partition mounting tubes (6) and fixing the top plate (3) and the bottom plate (4) to the upper and lower ends of the partition mounting tubes (6) respectively by means of connecting nuts (9), the partitions (7) are limited in the limiting grooves (6-1) of the partition mounting tubes (6), and the distance between adjacent limiting grooves (6-1) is 3-10 mm; The air outlet holes (1-3) are arranged to be tilted downward so that the airflow ejected from the air outlet holes (1-3) first contacts the plane of the lower partition plate (7) of the temporary storage chamber when it is blown out, so that the airflow bounces up and down between the two partition plates (7) when it moves in the temporary storage chamber. During the rebound process, the airflow fully contacts the paper in the temporary storage chamber to eliminate static electricity, and the paper is discharged outward in a lifted state, thereby achieving the purpose of paper discharge.

2. The paper discharge device according to claim 1, wherein: Two air nozzles (1) are arranged side by side along the width direction of the temporary storage cavity, and the horizontal distance between each air nozzle (1) and the corresponding edge of the temporary storage cavity is 1 / 4-2 / 5 of the width of the temporary storage cavity.

3. The paper discharge device according to claim 1, wherein: Embedded bosses (7-1) that match the limiting grooves (6-1) are provided at the four corners of the partition (7).

4. The paper discharge device according to claim 1, wherein: A baffle groove (7-3) is provided on the baffle (7) and on one side close to the air nozzle (1), and a slot matching the baffle (7) is provided on the baffle (8).

5. The paper discharge device according to claim 1, wherein: The material of the partition (7) is antistatic glass fiber board, carbon fiber or phenolic resin.

6. The paper discharge device according to claim 1, wherein: A photoelectric detection hole (7-2) is provided on the partition (7).

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