Adjustable folding structure of a folding machine

Abstract

The utility model discloses a kind of adjustable folding structure of folder, it is related to paper folding equipment technical field, to solve the problem of integrated design of whole machine, it is very difficult to add or reduce folding unit, inconvenient to flexibly realize adjustment folding frequency according to production demand.The technical scheme main point is: including folding part, the side of fourth folding roller is obliquely provided with upper guide plate, the center of fourth folding roller is fixedly connected with shaft, one end of shaft is slidably connected with eccentric turntable, upper guide plate is slidably connected on eccentric turntable.The core of the utility model is that the sliding connection of eccentric turntable and shaft is achieved, and the sliding fit of upper guide plate in eccentric turntable arc groove, the adjustment of the vertical position of fourth folding roller is realized, so as to allow operator to adjust the folding frequency required according to different paper folding needs, quickly and conveniently, greatly improve the versatility and production efficiency of folder.

Description

Technical Field

[0001] This utility model relates to the field of origami equipment technology, and more specifically, to an adjustable folding structure for a folding machine. Background Technology

[0002] Folding machines are post-press processing equipment widely used in printing plants, publishing houses, and other similar establishments. They are used to fold large-format printed paper into book panels or pages of required size according to a predetermined sequence and method. Their core function is achieved through a series of sequentially arranged folding units, each responsible for completing a fold in a specific direction.

[0003] Currently, most folding machines on the market, especially medium and large-sized ones, are integrated designs. The number of folding units is fixed during the design and manufacturing process. All folding units are typically rigidly mounted on a single frame, and the transmission system and paper feed path are designed and connected according to the fixed number and position of the folding units. While this integrated design ensures structural stability and operational accuracy under a given configuration, it cannot flexibly adapt to changing production needs. Printing orders are diverse, with some products requiring only one fold, while others, more complex ones, require three folds. For a folding machine designed for single folds, existing equipment is completely inadequate when production demands three folds. Users are forced to purchase a machine with a higher folding capacity, resulting in high investment costs, large space requirements, and low equipment utilization.

[0004] Therefore, a new solution is needed to address this problem. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an adjustable folding structure for a folding machine, which aims to solve the problem that it is very difficult to add or reduce folding units in the integrated design of the whole machine, and it is not convenient to flexibly adjust the number of folds according to production needs.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an adjustable folding structure for a folding machine, characterized in that it includes: The frame includes a paper inlet section and a paper outlet section. The paper inlet section is located at the upper part of the frame, and the paper outlet section is equipped with a conveyor belt. The paper outlet section is located at the lower part of the frame, and the frame has vertical slots and oblique slots. The folding section is located below the paper feed section. The folding section includes a first folding roller, a second folding roller positioned horizontally on one side of the first folding roller, a third folding roller positioned directly below the second folding roller, a fourth folding roller positioned horizontally on one side of the third folding roller, and a fifth folding roller positioned directly below the fourth folding roller. An upper guide plate is obliquely upwards on the side of the fourth folding roller, and two lower guide plates are obliquely downwards on the sides of the third and fifth folding rollers. A rotating shaft is fixedly connected to the center of the fourth folding roller, and a reset shaft is fixedly connected to the center of the fifth folding roller. An eccentric turntable is slidably connected to one end of the rotating shaft, and an upper guide plate is slidably connected to the eccentric turntable.

[0007] In a further configuration, the first folding roller is fixedly connected to a drive gear on the outer surface of the frame, and the second to fifth folding rollers are respectively fixedly connected to driven gears on the outer surface of the frame. The drive gear and the driven gears connected to the outer side of the second folding roller mesh with each other, and adjacent driven gears mesh with each other and rotate.

[0008] In a further configuration, the eccentric turntable is rotatably connected to the outer surface of the frame by rivets. The eccentric turntable has two arc grooves, which run from the edge of the eccentric turntable toward the center. The two arc grooves are centrally symmetrical on the eccentric turntable.

[0009] Further, the upper guide plate has a connecting part at its end, the connecting part is fitted into the arc groove and can slide in the arc groove, the connecting part passes through the inclined groove, the rotating shaft passes through the arc groove and can slide in the arc groove, the rotating shaft passes through the vertical groove, one end of the rotating shaft is fixedly connected to the driven gear, the reset shaft passes through the vertical groove, the lower surface of the vertical groove is provided with a spring, and one side of the reset shaft abuts against the spring.

[0010] Furthermore, baffles are slidably connected to both the upper guide plate and the lower guide plate. Guide grooves are provided on both sides of the upper guide plate and the lower guide plate. Several ratchet teeth are provided on the lower surface of the guide groove. A reset groove is provided at one end of the guide groove, and an engagement groove is provided at the other end of the guide groove.

[0011] Further, the baffle is fixedly connected to both sides with meshing plates, and the meshing plates are rotatably connected with barbs by rivets. A cylindrical block is fixedly connected to the meshing plate, and a meshing body is rotatably connected to the cylindrical block. The meshing body has a groove, which cooperates with the barbs to realize the resetting of the baffle. A locking block is sleeved on the meshing body, and the locking block engages with the ratchet.

[0012] Furthermore, the inner surfaces of both sides of the frame are provided with several fixing blocks, and the lower surfaces of both sides of the upper guide plate and the lower guide plate are provided with several fixing holes, so that the fixing blocks and fixing holes can be fitted together.

[0013] In a further configuration, the first folding roller is located at the top of the folding section, and the first folding roller is rotatably connected to the frame.

[0014] In summary, this utility model has the following beneficial effects: 1. The core of this utility model lies in the sliding connection between the eccentric turntable and the rotating shaft, and the sliding cooperation of the upper guide plate within the arc groove of the eccentric turntable, which enables the adjustment of the vertical position of the fourth folding roller. This adjustment can change the folding path and folding point of the paper, thereby allowing the operator to quickly and conveniently adjust the required number of folds according to different paper folding needs, greatly improving the versatility and production efficiency of the folding machine.

[0015] 2. The baffle structure on the upper and lower guide plates, through its unique engagement mechanism, barbs, and ratchet teeth within the guide groove, enables rapid, stepless adjustment and self-locking of the baffle position. When adjustment is needed, simply lift the baffle; the barbs disengage from the engagement mechanism, allowing it to slide. After releasing, gravity engages the latch and ratchet teeth, automatically locking the position. This design eliminates the cumbersome operation of traditional bolt-fixing methods, making the adjustment process intuitive and efficient. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a structural diagram of the folding section; Figure 3 This is a schematic diagram of the upper guide plate. Figure 4 This is a schematic diagram of the guide groove on the upper guide plate. Figure 5 for Figure 4 Enlarged schematic diagram of part A.

[0017] In the diagram: 1. Frame; 2. Folding section; 3. Upper guide plate; 4. Lower guide plate; 5. Rotating shaft; 6. Eccentric turntable; 7. Drive gear; 8. Driven gear; 9. Arc groove; 10. Connecting part; 11. Baffle; 12. Guide groove; 13. Reset groove; 14. Engaging groove; 15. Engaging plate; 16. Barb; 17. Cylindrical block; 18. Engaging body; 19. Locking block; 20. Fixing block. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] Example 1: An adjustable folding structure for a folding machine, as shown below Figure 1 As shown, the machine includes a frame 1, which includes a paper inlet section and a paper outlet section. The paper inlet section is located at the upper part of the frame 1, and the paper outlet section is equipped with a conveyor belt. The paper outlet section is located at the lower part of the frame 1, and the frame 1 has vertical slots and oblique slots.

[0020] Folding section 2 is located below the paper feed section. Folding section 2 includes a first folding roller, a second folding roller positioned on one horizontal side of the first folding roller, a gap between the first and second folding rollers directly below the paper feed opening, a third folding roller positioned directly below the second folding roller, a fourth folding roller positioned on one horizontal side of the third folding roller, and a fifth folding roller positioned directly below the fourth folding roller. An upper guide plate 3 is positioned diagonally upwards on the side of the fourth folding roller, and two lower guide plates 4 are positioned diagonally downwards on the sides of the third and fifth folding rollers. Figure 3 As shown, several fixing blocks 20 are provided on the inner surfaces of both sides of the frame 1. Two fixing holes are opened on the lower surfaces of both sides of the upper guide plate 3 and the lower guide plate 4, and the fixing blocks 20 are fitted into the fixing holes. The first folding roller is located at the top of the folding section 2. The first folding roller to the fifth folding roller are all rotatably connected to the frame 1. A reset shaft is welded to the center of the fifth folding roller.

[0021] like Figure 2 As shown, a rotating shaft 5 is welded to the center of the fourth folding roller. One end of the rotating shaft 5 is slidably connected to an eccentric turntable 6. The eccentric turntable 6 is rotatably connected to the outer surface of the frame 1 by rivets. Two arc grooves 9 are opened on the eccentric turntable 6. The two arc grooves 9 run from the edge of the eccentric turntable 6 toward the center. The two arc grooves 9 are centrally symmetrical on the eccentric turntable 6. Connecting parts 10 are welded to both sides of the end of the upper guide plate 3. The connecting parts 10 are fitted into the arc grooves 9 and can slide within the arc grooves 9. The connecting parts 10 pass through the oblique groove. The rotating shaft 5 passes through the arc grooves 9 and can slide within the arc grooves 9. The rotating shaft 5 passes through the vertical groove. One end of the rotating shaft 5 is fixedly connected to the driven gear 8 on the fourth folding roller. The reset shaft passes through the vertical groove. A spring is provided on the lower surface of the vertical groove. One side of the reset shaft abuts against the spring. The first folding roller has a drive gear 7 welded to the outer surface of the frame 1. The second to fifth folding rollers have driven gears 8 welded to the outer surface of the frame 1 respectively. The drive gear 7 and the driven gear 8 connected to the outer side of the second folding roller mesh with each other, and adjacent driven gears 8 mesh with each other and rotate.

[0022] like Figure 4 As shown, baffles 11 are slidably connected to both the upper guide plate 3 and the lower guide plate 4. Guide grooves 12 are provided on both sides of the upper guide plate 3 and the lower guide plate 4. Several ratchet teeth are provided on the lower surface of the guide grooves 12. A reset groove 13 is provided at one end of the guide groove 12, and an engagement groove 14 is provided at the other end of the guide groove 12.

[0023] like Figure 5 As shown, meshing plates 15 are welded to both sides of the baffle 11. A barb 16 is rotatably connected to the meshing plate 15 by a rivet. A cylindrical block 17 is welded to the meshing plate 15. A meshing body 18 is rotatably connected to the cylindrical block 17. A groove is opened on the meshing body 18. The groove cooperates with the barb 16 to realize the reset of the baffle 11. A locking block 19 is sleeved on the meshing body 18. The locking block 19 meshes with the ratchet.

[0024] The engagement plate 15 allows the baffle 11 to be positioned at any location when pushed upwards, but it cannot be pushed downwards or displaced. When the baffle 11 needs to be moved downwards, it needs to be pushed to the top, and then the locking block 19 separates from the ratchet. The locking block 19 enters the reset groove 13, allowing the barb 16 to engage with the groove on the engagement body 18. In this way, the baffle 11 can be pulled down to the bottom of the guide plate. The locking block 19 enters the engagement groove 14, and the barb 16 separates from the groove on the engagement body 18. When the baffle 11 is pushed upwards, the locking block 19 engages with the ratchet due to gravity, thus positioning the baffle 11.

[0025] In practical use, the folding machine works by feeding paper onto the machine. When the front end of the paper encounters the baffle 11 on the guide plate, the paper bends due to the traction of the next folding roller. If the paper fed into the folding machine needs to be folded three times, the paper is placed in the opening of the paper inlet. The paper then passes through the lower guide plate 4 of the third folding roller, the upper guide plate 3 of the fourth folding roller, and the lower guide plate 4 of the fifth folding roller. After three folds, the paper is fed out from between the fourth and fifth folding rollers onto the conveyor belt. When the folding machine needs to be switched from three folds to one fold, after turning off the folding machine, the upper guide plate 3 is lifted upwards, disengaging the fixing holes on both sides from the fixing blocks 20. Then, it is pulled outwards along the inclined groove, causing the connecting part 10 on the upper guide plate 3 to slide to the other end of the inclined groove. Finally, the upper guide plate 3 is lowered, engaging with another set of fixing blocks 20. Correspondingly, the movement of the upper guide plate 3 drives the rotation of the eccentric turntable 6, and at the same time drives the fourth folding roller to move downward on the vertical groove, so that the upper surface of the fourth folding roller is lower than the upper surface of the third folding roller, so that the driven gear 8 on the outside of the fourth folding roller disengages from the driven gear 8 on the outside of the third folding roller. In this way, after the paper enters the folding machine, it will only pass through the lower guide plate 4 of the third folding roller to achieve one fold, thereby realizing the conversion between three folds and one fold.

[0026] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. An adjustable folding structure for a folding machine, characterized in that: include: The frame (1) includes a paper inlet and a paper outlet. The paper inlet is located on the upper part of the frame (1), and the paper outlet is provided with a conveyor belt. The paper outlet is located on the lower part of the frame (1). The frame (1) has vertical slots and oblique slots. Folding section (2), the folding section (2) is located below the paper feed section, the folding section (2) includes a first folding roller, a second folding roller is arranged on the horizontal side of the first folding roller, a third folding roller is arranged directly below the second folding roller, a fourth folding roller is arranged on the horizontal side of the third folding roller, a fifth folding roller is arranged directly below the fourth folding roller, an upper guide plate (3) is arranged obliquely upward on the side of the fourth folding roller, two lower guide plates (4) are arranged obliquely downward on the sides of the third and fifth folding rollers, a rotating shaft (5) is fixedly connected to the center of the fourth folding roller, a reset shaft is fixedly connected to the center of the fifth folding roller, an eccentric turntable (6) is slidably connected to one end of the rotating shaft (5), and an upper guide plate (3) is slidably connected to the eccentric turntable (6).

2. The adjustable folding structure of the folding machine according to claim 1, characterized in that: The first folding roller is fixedly connected to a drive gear (7) on the outer surface of the frame (1), and the second to fifth folding rollers are respectively fixedly connected to driven gears (8) on the outer surface of the frame (1). The drive gear (7) meshes with the driven gear (8) connected to the outer side of the second folding roller, and the adjacent driven gears (8) mesh with each other and rotate.

3. The adjustable folding structure of the folding machine according to claim 2, characterized in that: The eccentric turntable (6) is rotatably connected to the outer surface of the frame (1) by rivets. The eccentric turntable (6) has two arc grooves (9). The two arc grooves (9) run from the edge of the eccentric turntable (6) toward the center. The two arc grooves (9) are centrally symmetrical on the eccentric turntable (6).

4. The adjustable folding structure of the folding machine according to claim 3, characterized in that: The upper guide plate (3) has a connecting part (10) at its end. The connecting part (10) is fitted into the arc groove (9) and can slide in the arc groove (9). The connecting part (10) passes through the oblique groove. The rotating shaft (5) passes through the arc groove (9) and can slide in the arc groove (9). The rotating shaft (5) passes through the vertical groove. One end of the rotating shaft (5) is fixedly connected to the driven gear (8). The reset shaft passes through the vertical groove. A spring is provided on the lower surface of the vertical groove. One side of the reset shaft abuts against the spring.

5. The adjustable folding structure of the folding machine according to claim 1, characterized in that: Both the upper guide plate (3) and the lower guide plate (4) are slidably connected with baffles (11). Both sides of the upper guide plate (3) and the lower guide plate (4) are provided with guide grooves (12). The lower surface of the guide groove (12) is provided with several ratchet teeth. One end of the guide groove (12) is provided with a reset groove (13), and the other end of the guide groove (12) is provided with an engagement groove (14).

6. The adjustable folding structure of the folding machine according to claim 5, characterized in that: The baffle (11) is fixedly connected to both sides by a meshing plate (15). A barb (16) is rotatably connected to the meshing plate (15) by a rivet. A cylindrical block (17) is fixedly connected to the meshing plate (15). A meshing body (18) is rotatably connected to the cylindrical block (17). A groove is opened on the meshing body (18). The groove cooperates with the barb (16) to realize the reset of the baffle (11). A locking block (19) is sleeved on the meshing body (18). The locking block (19) meshes with the ratchet.

7. The adjustable folding structure of the folding machine according to claim 1, characterized in that: The inner surfaces of both sides of the frame (1) are provided with a number of fixing blocks (20), and the lower surfaces of both sides of the upper guide plate (3) and the lower guide plate (4) are provided with a number of fixing holes, and the fixing blocks (20) are fitted into the fixing holes.

8. The adjustable folding structure of the folding machine according to claim 1, characterized in that: The first folding roller is located at the top of the folding section (2) and is rotatably connected to the frame (1).

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