Feeding device for thin paperboard printing machine
By designing a feeding device suitable for thin paperboard printing machines, the linear motion of the feeding plate is achieved using the servo motor and the lead screw slide structure, and the adjustment structure is used to adapt the cardboard of different widths, the problems of low feeding efficiency and poor adaptability in the prior art are solved, and production efficiency and equipment flexibility are improved.
Patent Information
- Application Number
- CN202520702037.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-15
- Publication Date
- 2025-05-20
- Estimated Expiration
- 2035-04-15
AI Technical Summary
The feeding method of existing thin paperboard printing machines relies on manual operations or simple mechanical devices, resulting in low production efficiency and difficulty in adapting to different specifications of thin paperboard, increasing production costs and affecting production continuity.
A feeding device for a thin paperboard printing machine is designed, including a feeding platform, a guide plate, a collector box, a mounting plate, an adjustment structure and a feeding structure. The second servo motor drives the reciprocating screw and the reciprocating slider to realize the linear movement of the feeding plate, and the forward and reverse tooth screws are driven by the first servo motor to adjust the spacing of the guide plates to adapt to thin paperboards of different widths.
It improves feeding speed and production efficiency, can easily adapt to thin cardboard of different widths, without changing or adjusting feeding equipment, reduces production costs and improves the flexibility of equipment use.
Smart Images
Figure CN222886591U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of printing equipment, in particular to a feeding device for a thin cardboard printing machine. Background Technique
[0002] In the development process of the thin cardboard printing industry, the feeding link has always been a key factor affecting production efficiency and quality. In the early stage, the feeding method of thin cardboard printing machines mostly relied on manual operation. Workers needed to put thin cardboard sheets into the feeding port of the printing machine one by one. This manual feeding method not only consumed a large amount of manpower, but also the feeding speed was limited by the worker's proficiency and physical strength. The production efficiency was extremely low and it was difficult to meet the needs of large-scale industrial production. With the progress of technology, some simple mechanical feeding devices began to appear, but these traditional devices generally had poor adaptability problems. They often could only feed thin cardboard of a specific width. When it was necessary to print thin cardboard of different specifications, it took a lot of time and effort to adjust or even replace components of the feeding device. This not only increased production costs, but also seriously affected the continuity of production. Content of the Utility Model
[0003] To solve the above technical problems, the utility model provides a feeding device for a thin cardboard printing machine.
[0004] The feeding device for a thin cardboard printing machine provided by the utility model includes: a feeding platform, a guiding plate, an aggregate box, a mounting plate, an adjusting structure and a feeding structure. An installation groove is formed on the upper surface of the feeding platform. Two guiding plates are slidably connected to the bottom of the installation groove on the upper surface of the feeding platform. An aggregate box is fixedly connected to the upper surface of one end of the feeding platform. A mounting plate is arranged on one side of the aggregate box. The lower surfaces of both ends of the mounting plate are fixedly connected to the upper surface of the feeding platform. A sliding groove is formed on the lower surface of the mounting plate. An adjusting structure is arranged inside the sliding groove on the lower surface of the mounting plate. The adjusting structure includes a connecting plate and a positive and negative thread screw rod. There are two connecting plates. The upper ends of the two connecting plates are slidably connected inside the sliding groove on the lower surface of the mounting plate. Thread holes are formed on the side surfaces of the upper ends of the two connecting plates. A positive and negative thread screw rod is threadedly connected inside the thread holes on the side surfaces of the upper ends of the two connecting plates. The lower ends of the two connecting plates respectively pass through the sliding groove on the lower surface of the mounting plate and are fixedly connected to the upper surfaces of the two guiding plates. A feeding structure is arranged on the lower surface of the feeding platform. The feeding structure includes a reciprocating lead screw, a reciprocating slider and a feeding plate. A reciprocating slider is sleeved on the outer surface of the reciprocating lead screw. A feeding plate is fixedly connected to the upper surface of the reciprocating slider.
[0005] Preferably, the aggregate box has no bottom. A number of thin cardboard sheets are placed inside the aggregate box. The lower surface of the lowermost thin cardboard sheet inside the aggregate box is in contact with the upper surfaces of the two guiding plates.
[0006] Preferably, a guiding groove is formed at the bottom inside the mounting groove on the upper surface of the feeding platform. The upper end of the feeding plate passes through the guiding groove at the bottom inside the mounting groove on the upper surface of the feeding platform and extends to one side of the cardboard body at the bottommost layer inside the aggregate box. A fitting groove is formed on one side of the upper end of the feeding plate, and the other side of the upper end of the feeding plate is arc-shaped. One end of the feeding platform is provided with a printing machine body. One ends of two guiding plates are located at the feeding port of the printing machine body. Two fixing plates are fixedly connected to the lower surface of the feeding platform, and through holes are formed on the side surfaces of the two fixing plates.
[0007] Preferably, through holes are formed on the side surface of the mounting plate. One end of the left-hand and right-hand screw rod is rotatably connected to the inner wall of the sliding groove on the lower surface of the mounting plate. The other end of the left-hand and right-hand screw rod passes through the through hole on the side surface of the mounting plate and extends to the outer surface of the mounting plate. The left-hand thread and the right-hand thread of the left-hand and right-hand screw rod are respectively located inside the threaded holes on the upper end side surfaces of the two connecting plates. One end of the left-hand and right-hand screw rod extending to the outer surface of the mounting plate is fixedly connected with a first driven bevel gear. A first driving bevel gear is meshed with one side of the first driven bevel gear. A first servo motor is arranged below the first driving bevel gear. The power output end of the first servo motor is fixedly connected to the lower end of the first driving bevel gear. The outer surface of the first servo motor is fixedly connected to the outer surface of the mounting plate.
[0008] Preferably, both ends of the reciprocating lead screw are respectively rotatably connected to the through holes on the side surfaces of the two fixing plates. One end of the reciprocating lead screw is fixedly connected with a second driven bevel gear. A second driving bevel gear is meshed with one side of the second driven bevel gear. A second servo motor is arranged below the second driving bevel gear. The power output end of the second servo motor is fixedly connected to the lower end of the second driving bevel gear. The outer surface of the second servo motor is fixedly connected to the outer surface of one of the fixing plates.
[0009] Preferably, two through holes are formed on the side surface of the reciprocating slider. Slide bars are slidably connected to the two through holes on the side surface of the reciprocating slider. Both ends of the slide bars are respectively fixedly connected to the outer surfaces of the opposite sides of the two fixing plates.
[0010] Compared with the related art, the feeding device for the cardboard printing machine provided by the present utility model has the following beneficial effects:
[0011] 1. By providing a feeding structure, when the second servo motor is started, the power output end of the second servo motor rotates to drive the second driving bevel gear to rotate. When the second driving bevel gear rotates, it meshes with the second driven bevel gear, causing the second driven bevel gear to rotate. The rotation of the second driven bevel gear drives the reciprocating lead screw to rotate. Since there are special spiral grooves on the surface of the reciprocating lead screw, one section is a left-handed spiral groove and the other section is a right-handed spiral groove, which are connected by a transition section in the middle. When the reciprocating lead screw rotates, the reciprocating slider will move linearly along the axial direction of the reciprocating lead screw under the action of the spiral. When the reciprocating slider moves from the left-handed spiral groove to the transition section and then enters the right-handed spiral groove, its moving direction will change, thus realizing a reciprocating linear motion. The upper end of the feeding plate passes through the guiding groove on the feeding platform and is located on one side of the thinnest cardboard body at the bottom layer inside the aggregate box. One side of the fitting groove at the upper end of the feeding plate can cooperate with the edge of the cardboard. When the feeding plate moves towards the printing machine body following the reciprocating slider, the feeding plate pushes the cardboard body in the aggregate box to the feeding port of the printing machine body through the guiding plate, effectively improving the feeding speed and production efficiency and meeting the requirements of large-scale industrial production.
[0012] 2. By providing a mounting plate and an adjusting structure, with the help of the first servo motor driving the left-right threaded lead screw to rotate, the connecting plate and the guiding plate are driven to move, and the distance between the two guiding plates can be accurately adjusted. This enables the feeding device to easily adapt to thin cardboard of different widths without the need to replace the feeding equipment or perform complex adjustments for different specifications of cardboard, effectively reducing the production cost and improving the flexibility of equipment use. Brief Description of the Drawings
[0013] Figure 1 It is a schematic structural diagram of a preferred embodiment of the feeding device for a thin cardboard printing machine provided by the present utility model;
[0014] Figure 2 It is a schematic structural diagram of another perspective of the present utility model;
[0015] Figure 3 It is a schematic structural diagram inside the chute on the lower surface of the mounting plate of the present utility model;
[0016] Figure 4 It is an exploded structural diagram of the inside of the guiding groove of the feeding platform and the feeding structure of the present utility model;
[0017] Figure 5 For the present utility model Figure 3 The enlarged structural diagram at position A;
[0018] Figure 6 For the present utility model Figure 4 The enlarged structural diagram at position B.
[0019] Reference numerals in the figure: 1, feeding platform; 2, guide plate; 3, aggregate box; 4, mounting plate; 5, adjusting structure; 6, feeding structure; 7, connecting plate; 8, right and left hand screw rod; 9, reciprocating lead screw; 10, reciprocating slider; 11, feeding plate; 12, cardboard body; 13, printing press body; 14, fixing plate; 15, first driven bevel gear; 16, first driving bevel gear; 17, first servo motor; 18, second driven bevel gear; 19, second driving bevel gear; 20, second servo motor; 21, slide bar. Detailed implementation mode
[0020] The present utility model will be further described below in conjunction with the accompanying drawings and the implementation mode.
[0021] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6, including: a feeding platform 1, a guiding plate 2, an aggregate box 3, a mounting plate 4, an adjusting structure 5 and a feeding structure 6. An installation groove is formed on the upper surface of the feeding platform 1. Two guiding plates 2 are slidably connected to the bottom of the installation groove on the upper surface of the feeding platform 1. An aggregate box 3 is fixedly connected to the upper surface of one end of the feeding platform 1. The guiding plate 2 guides the cardboard entering the printing machine body 13 from the aggregate box 3, ensuring that the cardboard is accurately conveyed to the feeding port of the printing machine along a predetermined path, preventing the cardboard from shifting during the conveying process. An installation plate 4 is arranged on one side of the aggregate box 3. The lower surfaces of both ends of the installation plate 4 are fixedly connected to the upper surface of the feeding platform 1. A sliding groove is formed on the lower surface of the installation plate 4. An adjusting structure 5 is arranged inside the sliding groove on the lower surface of the installation plate 4. The adjusting structure 5 includes a connecting plate 7 and a positive and negative thread screw rod 8. There are two connecting plates 7. The upper ends of the two connecting plates 7 are slidably connected inside the sliding groove on the lower surface of the installation plate 4. The sliding groove on the lower surface of the installation plate 4 provides a sliding track for the connecting plate 7 of the adjusting structure 5. Threaded holes are formed on the side surfaces of the upper ends of the two connecting plates 7. A positive and negative thread screw rod 8 is threadedly connected inside the threaded holes on the side surfaces of the upper ends of the two connecting plates 7. The lower ends of the two connecting plates 7 respectively pass through the sliding groove on the lower surface of the installation plate 4 and are fixedly connected to the upper surfaces of the two guiding plates 2. The connecting plate 7 drives the guiding plate 2 to move by sliding in the sliding groove of the installation plate 4, realizing the adjustment of the distance between the guiding plates 2. A feeding structure 6 is arranged on the lower surface of the feeding platform 1. The feeding structure 6 includes a reciprocating lead screw 9, a reciprocating slider 10 and a feeding plate 11. A reciprocating slider 10 is sleeved on the outer surface of the reciprocating lead screw 9. The feeding plate 11 is fixedly connected to the upper surface of the reciprocating slider 10. The surface of the reciprocating lead screw 9 has a special spiral groove. A guiding slider is rotatably connected inside the reciprocating slider 10. The guiding slider inside the reciprocating slider 10 is slidably connected inside the spiral groove on the outer surface of the reciprocating lead screw 9. When the reciprocating lead screw 9 rotates, the reciprocating slider 10 will move linearly along the axial direction of the reciprocating lead screw 9 due to the spiral effect. The outer surface of the reciprocating lead screw 9 is a section of left-handed spiral groove and a section of right-handed spiral groove, which are connected by a transition section. When the reciprocating slider 10 moves from the left-handed spiral groove to the transition section and then enters the right-handed spiral groove, its moving direction will change, thus realizing a reciprocating linear motion. The reciprocating lead screw 9 and the reciprocating slider 10 are common existing technologies and will not be elaborated here.
[0022] In the specific implementation process, among them, the aggregate box 3 has no bottom. A number of thin cardboard sheets 12 are placed inside the aggregate box 3. The lower surface of the lowermost thin cardboard sheet 12 inside the aggregate box 3 is attached to the upper surfaces of the two guiding plates 2. The aggregate box 3 is used to store the thin cardboard sheets 12 to be printed. The bottomless design enables the lowermost cardboard to directly contact the guiding plate 2, facilitating the feeding structure 6 to send out the cardboard sheets one by one.
[0023] Among them, a guiding groove is formed at the bottom of the mounting groove on the upper surface of the feeding platform 1. The upper end of the feeding plate 11 passes through the guiding groove at the bottom of the mounting groove on the upper surface of the feeding platform 1 and extends to one side of the bottommost cardboard body 12 inside the aggregate box 3. A fitting groove is formed on one side of the upper end of the feeding plate 11, and the other side of the upper end of the feeding plate 11 is arc-shaped. The arc-shaped side of the upper end of the feeding plate 11 facilitates the feeding plate 11 to pass through the cardboard body when it resets. The side of the fitting groove at the upper end of the feeding plate 11 can cooperate with the edge of the cardboard. Driven by the reciprocating slider 10, the cardboard bodies in the aggregate box 3 are pushed one by one to the printing machine body 13 through the guiding plate 2. One end of the feeding platform 1 is provided with the printing machine body 13. One ends of the two guiding plates 2 are located at the feeding port of the printing machine body 13. Two fixing plates 14 are fixedly connected to the lower surface of the feeding platform 1. Through holes are formed on the side surfaces of the two fixing plates 14. The fixing plates 14 are used to install the reciprocating lead screw 9 and the sliding rod 21, provide rotational support for the reciprocating lead screw 9, and at the same time play a role in limiting and guiding the reciprocating slider 10 through the sliding rod 21 to ensure the stability of the movement of the reciprocating slider 10.
[0024] Among them, through holes are formed on the side surface of the mounting plate 4. One end of the left - and - right - hand lead screw 8 is rotatably connected to the inner wall of the sliding groove on the lower surface of the mounting plate 4. The other end of the left - and - right - hand lead screw 8 passes through the through hole on the side surface of the mounting plate 4 and extends to the outer surface of the mounting plate 4. The right - hand thread and the left - hand thread of the left - and - right - hand lead screw 8 are respectively located inside the threaded holes on the upper - end side surfaces of the two connecting plates 7. One end of the left - and - right - hand lead screw 8 extending to the outer surface of the mounting plate 4 is fixedly connected with a first driven bevel gear 15. A first driving bevel gear 16 is engaged with one side of the first driven bevel gear 15. A first servo motor 17 is arranged at the lower end of the first driving bevel gear 16. The power output end of the first servo motor 17 is fixedly connected to the lower end of the first driving bevel gear 16. The outer surface of the first servo motor 17 is fixedly connected to the outer surface of the mounting plate 4. The first servo motor 17 is electrically connected to an external power supply. When the first servo motor 17 is started, the power output end of the first servo motor 17 rotates to drive the first driving bevel gear 16 to rotate. When the first driving bevel gear 16 rotates, it engages the first driven bevel gear 15 to rotate. When the first driven bevel gear 15 rotates, it drives the left - and - right - hand lead screw 8 to rotate. When the left - and - right - hand lead screw 8 rotates, since its right - hand thread and left - hand thread respectively cooperate with the threaded holes on the two connecting plates 7, the two connecting plates 7 can move in opposite or the same direction at the same time, so as to accurately adjust the distance between the two guiding plates 2 to adapt to thin cardboard of different widths.
[0025] Among them, both ends of the reciprocating lead screw 9 are respectively rotatably connected to the through holes on the side surfaces of the two fixed plates 14. One end of the reciprocating lead screw 9 is fixedly connected to the second driven bevel gear 18. A second driving bevel gear 19 is engaged on one side of the second driven bevel gear 18. A second servo motor 20 is arranged at the lower end of the second driving bevel gear 19. The power output end of the second servo motor 20 is fixedly connected to the lower end of the second driving bevel gear 19. The outer surface of the second servo motor 20 is fixedly connected to the outer surface of one of the fixed plates 14. The second servo motor 20 is electrically connected to an external power supply. When the second servo motor 20 is started, the power output end of the second servo motor 20 rotates to drive the second driving bevel gear 19 to rotate. When the second bevel gear rotates, it meshes with the second driven bevel gear 18 to rotate. When the second driven bevel gear 18 rotates, it drives the reciprocating lead screw 9 to rotate.
[0026] Among them, two through holes are formed on the side surface of the reciprocating slider 10. Slide rods 21 are slidably connected to the two through holes on the side surface of the reciprocating slider 10. Both ends of the slide rods 21 are respectively fixedly connected to the outer surfaces of the opposite sides of the two fixed plates 14. The slide rods 21 limit the reciprocating slider 10 to only move linearly in the direction of the slide rods 21, improving the accuracy and stability of the movement of the feeding structure 6.
[0027] The working principle provided by the present utility model is as follows: When it is necessary to adapt to thin cardboard of different widths, the external power supply of the first servo motor 17 is connected, and the first servo motor 17 is started. The power output end of the first servo motor 17 rotates to drive the first driving bevel gear 16 to rotate. When the first driving bevel gear 16 rotates, it meshes with the first driven bevel gear 15, causing the first driven bevel gear 15 to rotate. The rotation of the first driven bevel gear 15 drives the left - right thread screw rod 8 to rotate. Since the left - hand threads and right - hand threads of the left - right thread screw rod 8 respectively cooperate with the threaded holes on the two connecting plates 7, the two connecting plates 7 will move in opposite or the same direction simultaneously, thereby driving the two guide plates 2 to move, realizing precise adjustment of the distance between the guide plates 2. The external power supply of the second servo motor 20 is connected, and the second servo motor 20 is started. The power output end of the second servo motor 20 rotates to drive the second driving bevel gear 19 to rotate. When the second driving bevel gear 19 rotates, it meshes with the second driven bevel gear 18, causing the second driven bevel gear 18 to rotate. The rotation of the second driven bevel gear 18 drives the reciprocating screw rod 9 to rotate. Since the surface of the reciprocating screw rod 9 has special spiral grooves, one left - hand spiral groove and one right - hand spiral groove, which are connected by a transition section in the middle. When the reciprocating screw rod 9 rotates, the reciprocating slider 10 will move linearly along the axial direction of the reciprocating screw rod 9 under the action of the spiral. When the reciprocating slider 10 moves from the left - hand spiral groove to the transition section and then enters the right - hand spiral groove, its moving direction will change, thereby realizing reciprocating linear motion. The upper end of the feeding plate 11 passes through the guiding groove on the feeding platform 1 and is located on one side of the thin cardboard body 12 at the bottom layer inside the aggregate box 3. One side of the fitting groove at the upper end of the feeding plate 11 can cooperate with the edge of the cardboard. When the feeding plate 11 follows the reciprocating slider 10 and moves towards the printing machine body 13, the feeding plate 11 pushes the cardboard body in the aggregate box 3 to the feeding port of the printing machine body 13 through the guide plate 2. At the same time, the slide bar 21 restricts the reciprocating slider 10 to move linearly only in the direction of the slide bar 21, ensuring the stability and accuracy of the feeding process. When the feeding plate 11 returns with the reciprocating slider 10, the arc - shaped side at the upper end of the feeding plate 11 facilitates the feeding plate 11 to pass through the cardboard body inside the aggregate box 3 for resetting. In this way, reciprocating feeding is convenient for continuously feeding the printing machine body 13.
[0028] The circuits and controls involved in the present utility model are all prior arts and will not be elaborated here too much.
[0029] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. All equivalent structural or equivalent process transformations made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, are equally included in the patent protection scope of the present utility model.
Claims
1. A feeding device for a thin paperboard printing machine, comprising a feeding platform (1), a guide plate (2), a collecting box (3), a mounting plate (4), an adjustment structure (5) and a feeding structure (6), characterized in that: The upper surface of the feeding platform (1) is provided with a mounting groove, and two guide plates (2) are slidably connected at the bottom of the mounting groove on the upper surface of the feeding platform (1). The upper surface of one end of the feeding platform (1) is fixedly connected to a collection box (3), and a mounting plate (4) is provided on one side of the collection box (3). The lower surfaces of both ends of the mounting plate (4) are fixedly connected to the upper surface of the feeding platform (1). A sliding groove is provided on the lower surface of the mounting plate (4), and an adjustment structure (5) is provided inside the sliding groove on the lower surface of the mounting plate (4). The adjustment structure (5) includes a connecting plate (7) and a positive and negative threaded rod (8). The connecting plate (7) is provided with two pieces, and the upper ends of the two connecting plates (7) are slidably connected to the mounting plate (7). The upper side surfaces of the two connecting plates (7) are provided with threaded holes inside the slide groove on the lower surface of the mounting plate (4), and the threaded holes on the upper side surfaces of the two connecting plates (7) are threadedly connected with positive and negative threaded screws (8). The lower ends of the two connecting plates (7) pass through the slide groove on the lower surface of the mounting plate (4) and are fixedly connected to the upper surfaces of the two guide plates (2). The lower surface of the feeding platform (1) is provided with a feeding structure (6), and the feeding structure (6) includes a reciprocating screw (9), a reciprocating slider (10) and a feeding plate (11). The reciprocating slider (10) is sleeved on the outer surface of the reciprocating screw (9), and the upper surface of the reciprocating slider (10) is fixedly connected with the feeding plate (11).
2. The feeding device for a thin paperboard printing press according to claim 1, characterized in that: The material collection box (3) has no bottom, and a plurality of thin cardboard plates (12) are placed inside the material collection box (3), wherein the lower surface of the lowest layer of thin cardboard plates (12) inside the material collection box (3) is in contact with the upper surfaces of the two guide plates (2).
3. The feeding device for a thin paperboard printing press according to claim 1, characterized in that: A guide groove is provided at the bottom of the mounting groove on the upper surface of the feeding platform (1); the upper end of the feeding plate (11) passes through the guide groove at the bottom of the mounting groove on the upper surface of the feeding platform (1) and extends to the side of the lowest layer of the thin paperboard plate (12) inside the collecting box (3); a fitting groove is provided on one side of the upper end of the feeding plate (11); the other side of the upper end of the feeding plate (11) is in an arc shape; a printing machine body (13) is provided at one end of the feeding platform (1); one end of the two guide plates (2) is located at the feed port of the printing machine body (13); two fixing plates (14) are fixedly connected to the lower surface of the feeding platform (1); and through holes are provided on the side surfaces of the two fixing plates (14).
4. The feeding device for a thin paperboard printing press according to claim 1, characterized in that: The side surface of the mounting plate (4) is provided with a through hole, one end of the positive and negative threaded rod (8) is rotatably connected to the inner wall of the slide groove on the lower surface of the mounting plate (4), the other end of the positive and negative threaded rod (8) passes through the through hole on the side surface of the mounting plate (4) and extends to the outer surface of the mounting plate (4), the positive teeth and negative teeth of the positive and negative threaded rod (8) are respectively located inside the threaded holes on the upper side surfaces of the two connecting plates (7), one end of the positive and negative threaded rod (8) extending to the outer surface of the mounting plate (4) is fixedly connected to a first driven bevel gear (15), one side of the first driven bevel gear (15) is meshed with a first transmission bevel gear (16), a first servo motor (17) is arranged at the lower end of the first transmission bevel gear (16), a power output end of the first servo motor (17) is fixedly connected to the lower end of the first transmission bevel gear (16), and the outer surface of the first servo motor (17) is fixedly connected to the outer surface of the mounting plate (4).
5. The feeding device for a thin paperboard printing press according to claim 1, characterized in that: The two ends of the reciprocating screw (9) are rotatably connected to the inside of the through holes on the side surfaces of the two fixed plates (14), one end of the reciprocating screw (9) is fixedly connected to a second driven bevel gear (18), one side of the second driven bevel gear (18) is meshed with a second transmission bevel gear (19), a second servo motor (20) is arranged at the lower end of the second transmission bevel gear (19), a power output end of the second servo motor (20) is fixedly connected to the lower end of the second transmission bevel gear (19), and an outer surface of the second servo motor (20) is fixedly connected to the outer surface of one of the fixed plates (14).
6. The feeding device for a thin paperboard printing press according to claim 1, characterized in that: The side surface of the reciprocating slider (10) is provided with two through holes, and a slide rod (21) is slidably connected inside the two through holes on the side surface of the reciprocating slider (10), and the two ends of the slide rod (21) are respectively fixedly connected to the outer surfaces of the opposite sides of the two fixed plates (14).