A paper feeding structure and a paper feeder thereof

Abstract

The utility model belongs to printing equipment technical field discloses a kind of paper feeding structure and its paper feeder, including box, box hinged connection has box door, box is equipped with sliding slot one, box rotation is connected with threaded rod one, box is connected with motor one, motor one is connected with threaded rod one, threaded rod one is connected with sliding block one in screw thread, sliding block one is connected with lifting plate, lifting plate is equipped with sliding slot two and drive cavity, lifting plate rotation is connected with threaded rod two, threaded rod two is connected with sliding block two in screw thread, sliding block two is connected with limit plate, drive cavity inner wall is connected with motor two, motor two output end is connected with driving bevel gear, threaded rod two is connected with driven bevel gear, driven bevel gear is engaged with driving bevel gear, box is equipped with paper feeding port, and box paper feeding structure.The utility model improves the adaptability of equipment to diversification paper and paper feeding stability, provides accurate pre-positioning guarantee for subsequent negative pressure adsorption conveying and other links.

Description

Technical Field

[0001] This utility model relates to the field of printing equipment technology, and in particular to a paper feeding structure and its paper feeder. Background Technology

[0002] Paper conveyors are widely used in the paper processing and printing industry, serving as auxiliary equipment for various printing and processing machines and production processes. Their main function is to separate stacked sheets of paper layer by layer and convey them forward, feeding the paper out according to the different requirements of different main machines in a fixed and accurate manner.

[0003] A search of Chinese utility model patent (publication number CN216004552U) reveals a paper feeding structure and its paper feeder, which includes a conveyor belt, a negative pressure chamber, a through hole, an air inlet, and a paper feeder. The negative pressure chamber and the conveyor belt form a negative pressure adsorption channel through the air hole, which combines adsorption and paper feeding to complete the paper feeding function, effectively simplifying the structure of the equipment and reducing the manufacturing cost of the equipment.

[0004] However, practical application has revealed that this technical solution still has at least the following drawbacks:

[0005] When there is no positional structure on both sides of the paper, it is easy to cause lateral displacement due to stacking skew, external force or self-curling during the conveying process, making it difficult to maintain a stable central position. This results in the adsorption area of ​​the paper conveying structure not being able to accurately align with the effective area of ​​the paper, which may lead to partial adsorption, edge lifting or even falling off, thus causing conveying skew, paper jams, and affecting the positioning accuracy of subsequent processes. Utility Model Content

[0006] The present invention aims to provide a paper feeding structure and a paper feeder to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A paper feeding structure and its paper feeder include a housing, a door hinged to the housing, a first sliding groove in the housing, a first threaded rod rotatably connected to the housing, a first motor connected to the housing, the first motor connected to the first threaded rod, a first slider threadedly connected to the first threaded rod, a first lifting plate connected to the first slider, a second sliding groove in the lifting plate and a second driving cavity, a second threaded rod rotatably connected to the lifting plate, a second slider threadedly connected to the second threaded rod, a second slider connected to the second slider, a second limit plate connected to the second slider, a second motor connected to the inner wall of the driving cavity, and an output end of the second motor connected to... The device includes a driving bevel gear, a driven bevel gear connected to the threaded rod, the driven bevel gear meshing with the driving bevel gear, a paper feed port on the housing, a support connected to the housing, a negative pressure box connected to the support, a negative pressure pump connected to the housing, an air extraction pipe connected to the negative pressure box, the air extraction pipe passing through the housing and connected to the negative pressure pump, two sets of rotating shafts rotatably connected to the housing, drive rollers connected to the two sets of rotating shafts, and a conveyor belt movably connected to the two sets of drive rollers, the conveyor belt and the negative pressure box respectively having through holes one and two, and a drive mechanism connected to the rotating shafts.

[0009] Preferably, the drive mechanism includes a third motor, which is connected to the housing, and the output end of the third motor is connected to any one of the rotating shafts. Both sets of rotating shafts are connected to a pulley assembly.

[0010] Preferably, the door is connected to an observation glass.

[0011] Preferably, the housing is connected to a support rod, and the slider is slidably connected to the support rod.

[0012] Preferably, the box body has an installation groove, and a paper separating wheel is rotatably connected to the inner wall of the installation groove. The paper separating wheel is connected to a rubber layer.

[0013] Preferably, the box body is connected to a paper receiving platform.

[0014] The beneficial effects of this technical solution compared to existing technologies are as follows:

[0015] (1) This technical solution uses a motor to drive a threaded rod to raise and lower a lifting plate, adapting to paper stacks of different heights. A second motor, in conjunction with a bevel gear transmission, causes the threaded rod to move the slider and limiting plate along the slide groove. Through mechanical transmission, precise and stable adjustment of the limiting width is achieved, quickly adapting to different paper sizes and ensuring the paper remains centered during transport, preventing misalignment, skewed transport, or paper jams caused by lateral offset. Furthermore, the high transmission efficiency and compact structure of the bevel gear transmission enable reliable power transmission within a limited space. This enhances the equipment's adaptability to diverse paper types and improves paper transport stability, providing precise pre-positioning assurance for subsequent negative pressure adsorption and transport processes.

[0016] (2) By setting up a pulley assembly, the synchronous rotation of two sets of rotating shafts and drive rollers can be achieved, ensuring that the conveyor belt runs smoothly and that the paper is continuously and evenly conveyed forward on the conveyor belt, providing a stable conveying basis for negative pressure adsorption.

[0017] (3) By setting up an observation glass, operators can directly observe the stacking status of the paper inside the box, the conveying progress and the operation of the equipment without opening the box door. This facilitates real-time monitoring of whether there are abnormalities such as paper jams, skewing, or paper shortages during the paper feeding process, and makes it easier to detect and deal with problems in a timely manner.

[0018] (4) By setting up support rods, additional support and guidance can be provided for slider one and the lifting plate connected thereto, while dispersing the load pressure of threaded rod one, reducing the risk of wear or deformation caused by long-term uneven force, and extending the service life of the equipment.

[0019] (5) By setting paper separating wheels and rubber layers, the stacked paper can be separated by rotation, avoiding the problem of simultaneous conveying of multiple sheets of paper due to static electricity or adhesion, and reducing paper jams or processing failures caused by stacked paper conveying.

[0020] (6) By setting up a paper receiving platform, the paper that has been conveyed by the conveying structure can be received and temporarily stacked, providing a convenient paper picking platform for subsequent processes. Attached Figure Description

[0021] Figure 1 This is a front sectional view of the present invention;

[0022] Figure 2 This is a side sectional view of the present invention;

[0023] Figure 3 for Figure 2 Enlarged view of point A;

[0024] Reference numerals in the attached drawings: 1. Box body; 2. Slide groove II; 3. Lifting plate; 4. Threaded rod II; 5. Drive chamber; 6. Motor I; 7. Driven bevel gear; 8. Driven bevel gear; 9. Slider II; 10. Limiting plate; 11. Slide groove I; 12. Threaded rod I; 13. Support rod; 14. Mounting groove; 15. Paper separating wheel; 16. Paper feeding port; 17. Motor III; 18. Rotating shaft; 19. Negative pressure box; 20. Conveyor belt; 21. Bracket; 22. Negative pressure pump; 23. Air extraction pipe; 24. Through hole I; 25. Belt pulley assembly; 26. Through hole II; 27. Slider I; 28. Paper receiving platform; 29. ​​Drive roller; 30. Box door; 31. Observation glass; 32. Rubber layer; 33. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0026] like Figure 1-3The paper feeding structure and its feeder shown include a housing 1, with a hinged door 31 at the front of the housing 1, and an observation glass 32 connected to the door 31. A slide groove 12 is formed on the inner rear wall of the housing 1. A threaded rod 13 is rotatably connected to the housing 1, located inside the slide groove 12. A slider 28 is threadedly connected to the threaded rod 13, and the slider 28 is slidably connected to the slide groove 12. A motor 6 is connected to the bottom wall of the housing 1, and the motor 6 is connected to the threaded rod 13. A support rod 14 is connected to the housing 1, located inside the slide groove 12, and the slider 28 is slidably connected to the support rod 14. A lifting plate 3 is connected to the front wall of the slider 28. Two sets of slide grooves 2 are formed on the top wall of the lifting plate 3. Two sets of threaded rods 4 are rotatably connected to the lifting plate 3, located inside the slide grooves 2. A slider 10 is threadedly connected to the threaded rod 4, and the slider 10 is slidably connected to the slide groove 2. The lifting plate 3 has a drive chamber 5 inside. A motor 7 is connected to the bottom wall of the drive chamber 5. A driving bevel gear 8 is connected to the output end of the motor 7. One end of a threaded rod 4 extends into the drive chamber 5 and is connected to a driven bevel gear 9, which meshes with the driving bevel gear 8. A limit plate 11 is connected to the top wall of the slider 10. The rear wall of the housing 1 has a paper feed port 17 and a mounting groove 15. The mounting groove 15 is located below the paper feed port 17. A paper separating wheel 16 is rotatably connected to the inner wall of the mounting groove 15. A rubber layer 33 is connected to the paper separating wheel 16, and the rubber layer 33 slightly protrudes from the mounting groove 15. A paper receiving platform 29 is connected to the rear wall of the housing 1, corresponding to the paper feed port 17.

[0027] like Figure 1-2 As shown, a bracket 22 is connected to the top wall of the housing 1, and a negative pressure box 20 is connected to the bracket 22. A negative pressure pump 23 is also connected to the top wall of the housing 1. An air extraction pipe 24 is connected to the side wall of the negative pressure box 20, passing through the housing 1 and connecting to the negative pressure pump 23. Two sets of rotating shafts 19 are rotatably connected to the left and right side walls of the housing 1. Drive rollers 30 are connected to the rotating shafts 19, and the two sets of drive rollers 30 are movably connected to a conveyor belt 21. The inner side of the conveyor belt 21 is in contact with the bottom wall of the negative pressure box 20. Through holes 1 and 27 are respectively provided on the bottom wall of the conveyor belt 21 and the negative pressure box 20, and through holes 1 and 27 are engaged. A drive mechanism is connected to the rotating shafts 19, and the drive mechanism includes a motor 3 18. The motor 3 18 is connected to the outer side wall of the housing 1, and the output end of the motor 3 18 is connected to either rotating shaft 19. The other ends of the two sets of rotating shafts 19 are connected to a pulley assembly 26.

[0028] Motor 6 drives threaded rod 13 to rotate, causing slider 28 to rise and fall vertically along slide groove 12 and support rod 14. This, in turn, causes lifting plate 3 connected to slider 28 to rise and fall synchronously, adapting to paper stacks of different heights and ensuring that the top of the paper stack is always in a position conducive to paper separation and adsorption. Motor 7 drives active bevel gear 8 to rotate, which, through meshing with driven bevel gear 9, drives two sets of threaded rods 4 to rotate, causing slider 10 to move laterally along slide groove 2. This, in turn, causes limiting plate 11 to adjust its spacing synchronously, achieving precise positioning on both sides according to the paper size and ensuring the paper is centered. When the paper is lifted by lifting plate 3, it rubs upward against separating wheel 16, causing separating wheel 16 to rotate. The rubber layer 33 on its surface contacts the side wall of the paper stack, using friction to separate individual sheets of paper. The negative pressure pump 23 creates a negative pressure inside the negative pressure box 20 through the air extraction pipe 24. When the conveyor belt 21 runs with the drive roller 30, the through hole 25 on the conveyor belt 21 is dynamically aligned with the through hole 27 in the negative pressure box 20 to form an adsorption channel, which adsorbs the single sheet of paper after separation onto the conveyor belt 21 and sends it out through the paper feed port 17 along with the conveyor belt 21.

[0029] The specific implementation process is as follows:

[0030] In use, open the box door 31, adjust the distance between the two limit plates 11 according to the paper size using motor 7, and neatly place the stack of paper to be conveyed on the lifting plate 3, then close the box door 31. Start motors 6 and 18, and adjust the speed of motor 6 to match the speed of motor 18. This ensures that the top of the paper is always kept at the paper inlet 17. The conveyor belt 21 operates, separating the top sheets of paper, which are then picked up and conveyed by the conveyor belt 21, and sent to the receiving table 29 through the paper inlet 17. The paper conveying status inside the box can be monitored in real time through the observation glass 32.

[0031] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A paper feeding structure and its paper feeder, characterized in that: Includes a housing (1), the housing (1) is hinged to a door (31), the housing (1) has a sliding groove (12), the housing (1) is rotatably connected to a threaded rod (13), the housing (1) is connected to a motor (6), the motor (6) is connected to the threaded rod (13), the threaded rod (13) is threadedly connected to a slider (28), the slider (28) is connected to a lifting plate (3), the lifting plate (3) has a sliding groove (2) and a drive cavity (5), the lifting plate (3) is rotatably connected to a threaded rod (4), the threaded rod (4) is threadedly connected to a slider (10), the slider (10) is connected to a limit plate (11), the inner wall of the drive cavity (5) is connected to a motor (7), the output end of the motor (7) is connected to a drive bevel gear (8), the threaded... The second rod (4) is connected to a driven bevel gear (9), which meshes with the driving bevel gear (8). The box (1) has a paper feed port (17). The box (1) is connected to a bracket (22), which is connected to a negative pressure box (20). The box (1) is connected to a negative pressure pump (23), which is connected to a vacuum tube (24). The vacuum tube (24) passes through the box (1) and is connected to the negative pressure pump (23). The box (1) is rotatably connected to two sets of rotating shafts (19). The two sets of rotating shafts (19) are connected to drive rollers (30). The two sets of drive rollers (30) are movably connected to a conveyor belt (21). The conveyor belt (21) and the negative pressure box (20) are respectively provided with a through hole (25) and a through hole (27). The rotating shaft (19) is connected to a drive mechanism.

2. The paper feeding structure and its paper feeder as described in claim 1, characterized in that: The drive mechanism includes a third motor (18), which is connected to the housing (1). The output end of the third motor (18) is connected to any rotating shaft (19), and the two sets of rotating shafts (19) are connected to a pulley assembly (26).

3. The paper feeding structure and its paper feeder as described in claim 1, characterized in that: The box door (31) is connected to an observation glass (32).

4. The paper feeding structure and its paper feeder as described in claim 1, characterized in that: The housing (1) is connected to a support rod (14), and the slider (28) is slidably connected to the support rod (14).

5. The paper feeding structure and its paper feeder as described in claim 1, characterized in that: The box body (1) has an installation groove (15), and a paper separating wheel (16) is rotatably connected to the inner wall of the installation groove (15). The paper separating wheel (16) is connected to a rubber layer (33).

6. The paper feeding structure and its paper feeder as described in claim 1, characterized in that: The box (1) is connected to a paper receiving platform (29).

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