Duplex paper feeding device

Abstract

The present application relates to paper feeding device, especially to double paper feeding device, which comprises paper feeding mechanism, paper moving mechanism, paper feeding mechanism, gluing mechanism and conveying mechanism, the paper moving mechanism connects the paper feeding mechanism and the paper feeding mechanism, the gluing mechanism connects the paper feeding mechanism and the conveying mechanism, the first lifting paper feeding platform is transmissionally connected with the first lifting transmission structure, the first lifting transmission structure is transmissionally connected with the first power source, the first paper feeding roller is transmissionally connected with the first rotating transmission structure, the first rotating transmission structure is transmissionally connected with the third power source, wherein, the second lifting paper feeding platform is transmissionally connected with the second lifting transmission structure, the second lifting transmission structure is transmissionally connected with the second power source, the second paper feeding roller is transmissionally connected with the second rotating transmission structure, the second rotating transmission structure is transmissionally connected with the fourth power source, which can feed single large format paper and double small format paper.

Description

Technical Field

[0001] This invention relates to paper feeding devices, and more particularly to double paper feeding devices. Background Technology

[0002] Currently, in the production of products such as top and bottom paper boxes, frames, wine boxes, and leather cases, the face paper is fed to the gluing mechanism and then enters the conveyor belt. The conveyor belt then transports the paper to be aligned and bonded with the blank box or cardboard before subsequent forming.

[0003] Currently, the paper feed shaft is powered by the conveyor belt and works with the lifting paper feeding platform to feed the face paper. It can only feed one type of face paper. If a double-sheet production is designed, production efficiency can be improved for face paper of the same specification, and the production line can be integrated and the layout optimized for face paper of different specifications, such as the production of top and bottom lid paper boxes. However, when making double-sheet production, if the specifications are different (the lengths in the front and back directions are different), the centers cannot be aligned when feeding paper synchronously. Summary of the Invention

[0004] In view of the technical problems existing in the background art, the present invention aims to provide a double paper feeding device that can feed both a single large sheet of paper and two small sheets of paper. The small sheets of paper can be fed synchronously or asynchronously.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: This double-unit paper feeding device includes a paper feeding mechanism, a paper transferring mechanism, a paper feeding mechanism, a gluing mechanism, and a conveying mechanism. The paper transferring mechanism includes a paper transferring nozzle and connects the paper feeding mechanism and the paper feeding mechanism. The gluing mechanism connects the paper feeding mechanism and the conveying mechanism. The paper feeding mechanism includes a first lifting paper feeding platform and a first power source. The first lifting paper feeding platform is driven by a first lifting transmission structure, which is driven by the first power source. The paper feeding mechanism includes a paper pressing component, a third power source, and a first paper feeding roller. The paper pressing component is positioned above the first paper feeding roller, and the first paper feeding roller is driven by a first rotational transmission structure. The first rotary transmission structure is connected to the third power source. The paper feeding mechanism further includes a second lifting paper feeding platform and a second power source. The second lifting paper feeding platform is adjacent to the first lifting paper feeding platform. The second lifting paper feeding platform is connected to a second lifting transmission structure, which is connected to the second power source. The paper feeding mechanism further includes a fourth power source and a second paper feeding roller. The second paper feeding roller is disposed below the paper pressing component. The second paper feeding roller is connected to a second rotary transmission structure, which is connected to the fourth power source. The first paper feeding roller and the second paper feeding roller are coaxially arranged, and the outer diameter of the first paper feeding roller is the same as that of the second paper feeding roller.

[0006] Preferably, the second lifting paper feeding platform has a linkage mode and an independent mode. When the second lifting paper feeding platform is in the linkage mode, both the first lifting paper feeding platform and the second lifting paper feeding platform are connected to the first power source. When the second lifting paper feeding platform is in the independent mode, the second lifting paper feeding platform is connected to the second power source. The second lifting paper feeding platform switches between the linkage mode and the independent mode.

[0007] Preferably, the third power source drives the conveying mechanism.

[0008] Preferably, the second paper feed roller has a linkage mode and an independent mode. When the second paper feed roller is in the linkage mode, the first paper feed roller and the second paper feed roller are both connected to the third power source. When the second paper feed roller is in the independent mode, the second paper feed roller is connected to the fourth power source. The second paper feed roller switches between the linkage mode and the independent mode.

[0009] Preferably, the paper pressing component is disposed on the first bracket, the first bracket is rotatably disposed on the second bracket, the second bracket is rotatably disposed, a spring is provided between the first bracket and the second bracket, a limiting component is movably connected to the second bracket, and the limiting component abuts against the first bracket.

[0010] Preferably, the first lifting transmission structure includes a first sprocket and a first main shaft, the first main shaft is connected to the first power source, the first sprocket is sleeved on the first main shaft, and the first sprocket is connected to the first main shaft. The second lifting transmission structure includes a second sprocket, and a clutch structure is connected between the second sprocket and the first main shaft.

[0011] Preferably, the first paper feed roller has an insertion portion, the second paper feed roller has an insertion hole, the insertion portion cooperates with the insertion hole, and the surface of the first paper feed roller is in communication with the surface of the second paper feed roller.

[0012] Preferably, the clutch structure includes a connecting seat, which is connected to the second sprocket drive, the connecting seat is sleeved on the first main shaft, and the connecting seat is keyed to the first main shaft.

[0013] Preferably, the second lifting transmission structure includes a second main shaft, which is connected to the second power source. The second main shaft is eccentrically provided with a clutch part, and the second sprocket has a connecting hole. One side of the connecting hole is connected to the connecting seat, and the other side of the connecting hole is connected to the clutch part.

[0014] Preferably, a support structure is provided between the insertion part and the insertion hole. The support structure includes a combined bearing, a needle roller bearing, and a spacer. The spacer is located between the combined bearing and the needle roller bearing. The insertion part, the spacer, and the second paper feed roller are connected by a set screw drive.

[0015] The beneficial effects of this invention are as follows: the paper feeding device can feed both single large-format sheets of paper and double small-format sheets of paper; the positioning machine is configured to bond the cardboard and the face paper to form a casing; the two paper feeding rollers operate asynchronously, and the paper feeding mechanism, in coordination with the paper feeding mechanism, can feed double small-format sheets of paper of different lengths; and the box forming line can bond the top and bottom boxes and the face paper to form a top and bottom lid box. Therefore, this invention has substantial features and progress compared with the prior art. Attached Figure Description

[0016] The following description, in conjunction with the accompanying drawings, details the embodiments and working principles of the present invention.

[0017] Figure 1 This is a schematic diagram of the present invention.

[0018] Figure 2 This is a schematic diagram of the paper feeding mechanism in this invention.

[0019] Figure 3 This is a cross-sectional view of the first lifting transmission structure and the second lifting transmission structure in this invention.

[0020] Figure 4 for Figure 3 A magnified view of A in the middle.

[0021] Figure 5 This is a schematic diagram of the paper feeding mechanism in this invention.

[0022] Figure 6 for Figure 5 A magnified view of B in the middle.

[0023] Figure 7 This is a side view of the paper feeding mechanism in this invention.

[0024] In the diagram: 1. Paper feeding mechanism; 2. Paper transfer mechanism; 3. Paper feeding mechanism; 4. Gluing mechanism; 5. Conveying mechanism; 6. First lifting transmission structure; 7. Second lifting transmission structure; 8. First lifting paper feeding platform; 9. Second lifting paper feeding platform; 10. First power source; 11. Second power source; 12. First pressure roller; 13. Second pressure roller; 14. First paper feeding roller; 15. Second paper feeding roller; 16. Insertion part; 17. First sprocket; 18. Second sprocket; 19. Support structure; 20. First main shaft; 21. Clutch structure; 22. Combined bearing; 23. Spacer; 24. Needle roller bearing; 25. Connecting seat; 26. Second main shaft; 27. Connecting hole; 28. First rotation transmission structure; 29. ​​Second rotation transmission structure; 30. Paper pressing component; 31. First bracket; 32. Second bracket; 33. Spring; 34. Limiting component; 35. Clutch part. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the implementation of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0026] Referring to the accompanying drawings, the dual-feeding device in this embodiment includes a paper feeding mechanism 1, a paper transfer mechanism 2, a paper feeding mechanism 3, a gluing mechanism 4, and a conveying mechanism 5. The paper transfer mechanism 2 includes a paper transfer nozzle and connects the paper feeding mechanism 1 and the paper feeding mechanism 3. The gluing mechanism 4 connects the paper feeding mechanism 3 and the conveying mechanism 5. The paper feeding mechanism 1 includes a first lifting paper feeding platform 8 and a first power source 10. The first lifting paper feeding platform 8 is driven by a first lifting transmission structure 6, which is driven by the first power source 10. The paper feeding mechanism 3 includes a paper pressing component 30, a third power source, and a first paper feeding roller 14. The paper pressing component 30 is disposed above the first paper feeding roller 14. The first paper feeding roller 14 is driven by a first rotation transmission structure 28, which is driven by the third power source.

[0027] The paper feeding mechanism 1 further includes a second lifting paper feeding platform 9 and a second power source 11. The second lifting paper feeding platform 9 is arranged adjacent to the first lifting paper feeding platform 8. The second lifting paper feeding platform 9 is driven by a second lifting transmission structure 7, which is driven by the second power source 11. The paper feeding mechanism 3 further includes a fourth power source and a second paper feeding roller 15. The second paper feeding roller 15 is arranged below the paper pressing component 30. The second paper feeding roller 15 is driven by a second rotation transmission structure 29, which is driven by the fourth power source. The first paper feeding roller 14 and the second paper feeding roller 15 are arranged coaxially. The outer diameter of the first paper feeding roller 14 is the same as the outer diameter of the second paper feeding roller 15.

[0028] Specifically, the paper transfer mechanism 2 can use a feeder (a mature technology) to pick up the face paper from the paper supply mechanism 1 and send it to the paper feeding mechanism 3. The gluing mechanism 4 can be a gluing machine (a mature technology) to apply glue to the face paper (paper) sent from the paper feeding mechanism 3, and then send the face paper (paper) to the conveying mechanism 5. The conveying mechanism 5 can be a conveyor belt, with positioning machines on both sides to bond the cardboard and face paper to form a shell, or a box forming line to bond the top and bottom boxes and face paper to form a top and bottom box. The paper supply mechanism 1 can feed both single large-format face paper (paper) and double small-format face paper (paper). The double small-format face paper (paper) can be fed synchronously or asynchronously. The lifting transmission structure can be a screw and nut or a chain and sprocket. The paper pressing component 30 can be a roller shaft, or it can include a first pressure roller 12 and a second pressure roller 13, which correspond to the first feed roller 14 and the second feed roller 15 respectively. The first rotational transmission structure 28 includes a third sprocket, which is set at one end of the first feed roller 14. The first feed roller 14 and the second feed roller 15 rotate synchronously, cooperating with the paper pressing component 30 to feed a single large sheet of paper or two small sheets of paper of the same length. The first feed roller 14 and the second feed roller 15 rotate asynchronously, cooperating with the paper pressing component 30 to feed two small sheets of paper of different lengths. The longer sheet can go first and the shorter sheet can go later, or the longer sheet can go faster and the shorter sheet can go slower, so that the centers of the two are aligned. Subsequent processes are carried out through center positioning.

[0029] Based on the above embodiments, the following optimizations or further explanations can be made.

[0030] Furthermore, the second lifting paper supply platform 9 has a linkage mode and an independent mode. When the second lifting paper supply platform 9 is in the linkage mode, the first lifting paper supply platform 8 and the second lifting paper supply platform 9 are both connected to the first power source 10. When the second lifting paper supply platform 9 is in the independent mode, the second lifting paper supply platform 9 is connected to the second power source 11. The second lifting paper supply platform 9 switches between the linkage mode and the independent mode.

[0031] When the second lifting paper supply platform 9 is in linkage mode, the first power source 10 drives the first lifting paper supply platform 8 and the second lifting paper supply platform 9 to lift synchronously. There is no need to adjust the synchronization of the first power source 10 and the second power source 11. The first power source 10 and the second power source 11 can be either servo motors or ordinary motors. The switching method is to disconnect the transmission relationship inside the second lifting transmission structure 7. The original transmission structure can be used, such as connecting the first lifting transmission structure 6 with the second lifting transmission structure 7 to establish the transmission relationship between the first power source 10 and the second lifting paper supply platform 9. Alternatively, the first lifting paper supply platform 8 and the second lifting paper supply platform 9 can be connected into a platform, or an additional transmission connection can be designed.

[0032] Furthermore, the third power source drives the conveying mechanism 5, which is linked with the first paper feeding roller 14, resulting in a simple transmission structure.

[0033] In addition, the second paper feed roller 15 has a linkage mode and an independent mode. When the second paper feed roller 15 is in the linkage mode, both the first paper feed roller 14 and the second paper feed roller 15 are connected to the third power source. When the second paper feed roller 15 is in the independent mode, the second paper feed roller 15 is connected to the fourth power source. The second paper feed roller 15 switches between the linkage mode and the independent mode.

[0034] When the second paper feed roller 15 is in linkage mode, the third power source drives the first paper feed roller 14 and the second paper feed roller 15 to rotate synchronously. There is no need to adjust the synchronization of the third power source and the fourth power source. The third power source and the fourth power source can be either servo motors or ordinary motors. The switching method is to disconnect the transmission relationship inside the second rotation transmission structure 29, and then connect the first rotation transmission structure 28 with the second rotation transmission structure 29 to establish the transmission relationship between the third power source and the second paper feed roller 15. Alternatively, a transmission connection can be designed between the first paper feed roller 14 and the second paper feed roller 15.

[0035] Furthermore, the paper pressing component 30 is disposed on the first support 31, the first support 31 is rotatably disposed on the second support 32, the second support 32 is rotatably disposed, a spring 33 is provided between the first support 31 and the second support 32, and a limiting component 34 is movably connected to the second support 32, the limiting component 34 abutting against the first support 31.

[0036] The rotation of the second bracket 32 ​​can move the paper pressing component 30 away from or closer to the first paper feeding roller 14 (second paper feeding roller 15), facilitating the insertion of paper between the paper pressing component 30 and the first paper feeding roller 14 (second paper feeding roller 15), and preventing the paper from bending due to inaccurate insertion during high-speed operation; the first bracket 31 is rotatably mounted on the second bracket 32, and the limiting component 32 is specifically a screw that can be tightened or loosened. Tightening or loosening the screw can cause the first bracket 31 to rotate relative to the second bracket 32, so that the paper pressing component 30 on the first bracket 32 ​​is relative to the second bracket. The rotation of 32 can adjust the gap between the paper pressing component 30 and the first paper feeding roller 14 (second paper feeding roller 15). When the paper pressing component 30 includes the first pressure roller 12 and the second pressure roller 13, the gap between the paper pressing component 30 and the first paper feeding roller 14 (second paper feeding roller 15) can be adjusted separately. The degree of deformation of the spring 33 between the first support 31 and the second support 32 changes as the first support 31 rotates relative to the second support 32, which can limit the rotation of the first support 31 relative to the second support 32 and ensure that the paper pressing component 30 presses the paper stably.

[0037] Furthermore, the first lifting transmission structure 6 includes a first sprocket 17 and a first main shaft 20. The first main shaft 20 is connected to the first power source 10. The first sprocket 17 is sleeved on the first main shaft 20 and is connected to the first main shaft 20. The second lifting transmission structure 7 includes a second sprocket 18. A clutch structure 21 is connected between the second sprocket 18 and the first main shaft 20.

[0038] The sprocket and chain transmission structure is suitable for high-speed, high-load, and high-precision transmission. When the second lifting paper feeding platform 9 is in linkage mode, the first main shaft 20 drives the first sprocket 17 and the second sprocket 18. Coaxial linkage can better ensure synchronization and better control. It does not require the use of a servo motor to ensure synchronization, reduces the cost of the power source, and offers various clutch methods. It is a mature technology.

[0039] It is also possible that the first paper feed roller 14 has an insertion part 16 and the second paper feed roller 15 has an insertion hole. The insertion part 16 cooperates with the insertion hole. The surface of the first paper feed roller 14 is connected to the surface of the second paper feed roller 15. After the first paper feed roller 14 and the second paper feed roller 15 are inserted, they can support each other and adapt to high-speed rotation. Compared with designing an additional sleeve for both to pass through, the concentricity is good. The connection means that the two surfaces are collinear and form a complete outer contour, which is suitable for feeding large-format paper.

[0040] Furthermore, the clutch structure 21 includes a connecting seat 25, which is connected to the second sprocket 18 in a transmission manner. The connecting seat 25 is sleeved on the first main shaft 20 and is keyed to the first main shaft 20.

[0041] The connecting seat 25 can support one end of the first main shaft 20. Both ends of the first main shaft 20 are supported, and the rotation is stable. The first main shaft 20 drives the second sprocket 18 through the connecting seat 25. The connecting seat 25 and the second sprocket 18 can be connected by a pin. By removing the pin or the key between the connecting seat 25 and the first main shaft 20, the transmission relationship between the second lifting transmission structure 6 and the first lifting transmission structure 7 can be disconnected.

[0042] Furthermore, the second lifting transmission structure 7 includes a second main shaft 26, which is connected to the second power source 11. The second main shaft 26 is eccentrically provided with a clutch part 35. The second sprocket 18 has a connecting hole 27, one side of which is connected to the connecting seat 25, and the other side of which is connected to the clutch part 35.

[0043] The connection method can be that the pin is inserted into the connection hole 27 and the corresponding pin is pulled out to release the transmission connection between the connecting seat 25 and the second sprocket 18, or the clutch part 35 and the second sprocket 18, thus completing the switching between the linkage mode and the independent mode of the second lifting paper feeding platform 9.

[0044] Furthermore, an optimization is possible: a support structure 19 is provided between the insertion part 16 and the insertion hole. The support structure 19 includes a combined bearing 22, a needle roller bearing 24, and a spacer 23. The spacer 23 is located between the combined bearing 22 and the needle roller bearing 24. The insertion part 16, the spacer 23, and the second paper feed roller 15 are connected by a set screw drive. The combined bearing 22 is a thrust needle roller bearing 24, which has a compact structure, small size, and high rotational accuracy. It can withstand a certain axial load while bearing a high radial load. The needle roller bearing 24 has high accuracy, high speed, low wear, and long service life. Together, they can reduce the wear on the rotation of the first paper feed roller 14 and the second paper feed roller 15. The spacer 23 can adjust the bearing clearance and preload. The set screw is pushed into the second paper feed roller 15 through the hole of the first paper feed roller 14 from the spacer 23, so that the first paper feed roller 14 and the second paper feed roller 15 form a transmission relationship.

[0045] The above description represents the preferred embodiments of the present invention. It should be noted that the scope of protection of the present invention is not limited thereto. For those skilled in the art, various improvements, modifications, or equivalent substitutions can be made without departing from the equivalent inventive concept disclosed in the present invention, and these modifications and substitutions are also considered to be within the scope of protection of the present invention.

Claims

1. A double-feeding device, comprising a paper feeding mechanism (1), a paper transfer mechanism (2), a paper feeding mechanism (3), a gluing mechanism (4), and a conveying mechanism (5), wherein the paper transfer mechanism (2) comprises a paper transfer nozzle, the paper transfer mechanism (2) is connected to the paper feeding mechanism (1) and the paper feeding mechanism (3), the gluing mechanism (4) is connected to the paper feeding mechanism (3) and the conveying mechanism (5), the paper feeding mechanism (1) comprises a first lifting paper feeding platform (8) and a first power source (10), the first lifting paper feeding platform (8) is driven by a first lifting transmission structure (6), the first lifting transmission structure (6) is driven by the first power source (10), the paper feeding mechanism (3) comprises a paper pressing component (30), a third power source, and a first paper feeding roller (14), the paper pressing component (30) is disposed above the first paper feeding roller (14), the first paper feeding roller (14) is driven by a first rotation transmission structure (28), the first rotation transmission structure (28) is driven by the third power source, characterized in that: The paper feeding mechanism (1) further includes a second lifting paper feeding platform (9) and a second power source (11). The second lifting paper feeding platform (9) is arranged adjacent to the first lifting paper feeding platform (8). The second lifting paper feeding platform (9) is driven by a second lifting transmission structure (7). The second lifting transmission structure (7) is driven by the second power source (11). The paper feeding mechanism (3) further includes a fourth power source and a second paper feeding roller (15). The second paper feeding roller (15) is arranged below the paper pressing component (30). The second paper feeding roller (15) is driven by a second rotation transmission structure (29). The first paper feed roller (14) and the second paper feed roller (15) are coaxially connected to the fourth power source. The outer diameter of the first paper feed roller (14) is the same as that of the second paper feed roller (15). The second paper feed roller (15) has a linkage mode and an independent mode. When the second paper feed roller (15) is in the linkage mode, both the first paper feed roller (14) and the second paper feed roller (15) are connected to the third power source. When the second paper feed roller (15) is in the independent mode, the second paper feed roller (15) is connected to the fourth power source. The second paper feed roller (15) switches between the linkage mode and the independent mode.

2. The double paper feeding device as described in claim 1, characterized in that: The second lifting paper supply platform (9) has a linkage mode and an independent mode. When the second lifting paper supply platform (9) is in the linkage mode, both the first lifting paper supply platform (8) and the second lifting paper supply platform (9) are connected to the first power source (10) for transmission. When the second lifting paper supply platform (9) is in the independent mode, the second lifting paper supply platform (9) is connected to the second power source (11) for transmission. The second lifting paper supply platform (9) switches between the linkage mode and the independent mode.

3. The double paper feeding device as described in claim 1, characterized in that: The third power source drives the conveying mechanism (5).

4. The double paper feeding device as described in claim 1, characterized in that: The paper pressing component (30) is disposed on the first bracket (31), the first bracket (31) is rotatably disposed on the second bracket (32), the second bracket (32) is rotatably disposed, a spring (33) is provided between the first bracket (31) and the second bracket (32), and a limiting component (34) is movably connected on the second bracket (32), the limiting component (34) abuts against the first bracket (31).

5. The double paper feeding device as described in claim 2, characterized in that: The first lifting transmission structure (6) includes a first sprocket (17) and a first main shaft (20). The first main shaft (20) is connected to the first power source (10) in a transmission connection. The first sprocket (17) is sleeved on the first main shaft (20) and is connected to the first main shaft (20) in a transmission connection. The second lifting transmission structure (7) includes a second sprocket (18). The second sprocket (18) is connected to the first main shaft (20) by a clutch structure (21).

6. The double paper feeding device as described in claim 1, characterized in that: The first paper feed roller (14) has an insertion part (16), and the second paper feed roller (15) has an insertion hole. The insertion part (16) cooperates with the insertion hole, and the surface of the first paper feed roller (14) is in communication with the surface of the second paper feed roller (15).

7. The double paper feeding device as described in claim 5, characterized in that: The clutch structure (21) includes a connecting seat (25), which is connected to the second sprocket (18) for transmission. The connecting seat (25) is sleeved on the first main shaft (20) and is keyed to the first main shaft (20).

8. The double paper feeding device as described in claim 7, characterized in that: The second lifting transmission structure (7) includes a second main shaft (26), which is connected to the second power source (11). The second main shaft (26) is eccentrically provided with a clutch part (35). The second sprocket (18) has a connecting hole (27). One side of the connecting hole (27) is connected to the connecting seat (25), and the other side of the connecting hole (27) is connected to the clutch part (35).

9. The double paper feeding device as described in claim 6, characterized in that: A support structure (19) is provided between the insertion part (16) and the insertion hole. The support structure (19) includes a combined bearing (22), a needle roller bearing (24) and a spacer (23). The spacer (23) is located between the combined bearing (22) and the needle roller bearing (24). The insertion part (16), the spacer (23) and the second paper feed roller (15) are connected by a top wire drive.

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