Printed waste removal device

Abstract

This utility model discloses a printing waste rejection device, including a frame, a conveying device, and a diversion device. The conveying device is connected to the frame and has a product inlet for printed materials to enter and an outlet channel for printed materials to exit. The diversion device includes a diversion component disposed in the outlet channel, which has a first sidewall and a second sidewall. A good product channel is formed between the diversion component and the first sidewall, and a waste product channel is formed between the diversion component and the second sidewall. The diversion component is movably connected to the frame, allowing the diversion device to switch between a good product conveying mode with the good product channel open and a waste product conveying mode with the waste product channel open. The printing waste rejection device of this utility model has high accuracy in rejecting waste products and can reduce the large amount of waste of qualified products during the rejection process.

Description

Technical Field

[0001] This utility model relates to the technical field of printing waste rejection, specifically to a printing waste rejection device. Background Technology

[0002] Printing defects can occur during the printing process, such as ink spillage, ink buildup due to paper dust accumulation, continuous printing defects due to plate wear, ink skin, and ink smudges caused by drying, or single, occasional defects like paper holes or insects. These defective prints need to be removed. To achieve this, an online detection device is typically installed at the printing equipment exit, and a printing defect removal device is installed downstream. The online detection device determines the quality of the printed product by acquiring and comparing images. When the online detection device detects a defect, an encoder mounted on the frame and in close contact with the paper feed rollers detects the number of rotations of the paper feed rollers, thus determining when the defective print reaches the printing defect removal device. When the defective print arrives at the device, it is activated to remove it.

[0003] In related technologies, printing waste rejection devices include a rejection conveyor belt. When no waste is detected, the rejection conveyor belt extends horizontally, transporting qualified products to the next process. When waste is detected, one end of the rejection conveyor belt tilts downward and flips, causing the waste to be discharged downward. After the waste is discharged, the rejection conveyor belt resets and resumes operation. However, the downward flipping and upward resetting of this rejection conveyor belt is relatively slow. During the continuous transport of printed materials, to ensure that all waste is rejected, multiple qualified products before and after the waste need to be rejected together, i.e., inclusive rejection, resulting in a significant waste of qualified products. Utility Model Content

[0004] This utility model aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, embodiments of this utility model propose a printing waste rejection device, which has high accuracy in rejecting waste products and can reduce the phenomenon of a large amount of waste of qualified products during the rejection process.

[0006] The printing waste rejection device of this utility model embodiment includes a frame, a conveying device, and a diversion device. The conveying device is connected to the frame and has a product inlet for printed materials to enter and an outlet channel for printed materials to exit. The diversion device includes a diversion component disposed in the outlet channel. The outlet channel has a first sidewall and a second sidewall. A good product channel is formed between the diversion component and the first sidewall, and a waste product channel is formed between the diversion component and the second sidewall. The diversion component is movably connected to the frame so that the diversion device can switch between a good product conveying mode with the good product channel open and a waste product conveying mode with the waste product channel open.

[0007] In some embodiments, the dimension of the outlet channel in the thickness direction of the printed matter gradually increases along the conveying direction of the printed matter, the diverter includes a mounting portion and a diverting portion, the mounting portion is movably connected to the frame, and the dimension of the diverting portion in the thickness direction of the printed matter gradually increases along the conveying direction of the printed matter.

[0008] In some embodiments, the diversion device further includes a drive member and a rotating shaft, the rotating shaft being rotatably connected to the frame, the diversion member being connected to the rotating shaft, and the drive member being connected to the frame, the drive member being used to drive the rotating shaft to rotate.

[0009] In some embodiments, the conveying device includes a first acceleration device and a second acceleration device arranged in sequence. The printed matter enters the first acceleration device in a first fish-scale stacked state. The operating speed of the first acceleration device is greater than the initial speed of the printed matter entering the product inlet. The operating speed of the second acceleration device is greater than the operating speed of the second acceleration device, so that the printed matter is output by the second acceleration device in an independently arranged state.

[0010] In some embodiments, the first accelerating device includes an accelerating belt, the end of which, away from the second accelerating device, has the product inlet; and / or, the second accelerating device includes an upper pressing belt, a lower pressing belt, and a roller, the roller being rotatably connected to the frame, the outer wall of the roller having a first annular groove, the upper pressing belt being disposed above the lower pressing belt, the upper pressing belt including an upper pressing section, the lower pressing belt including a lower pressing section, at least a portion of the lower pressing section being disposed within the first annular groove and conforming to the bottom wall of the first annular groove, the upper pressing section conforming to the lower pressing section to form a conveying section, one end of the conveying section being connected to the accelerating belt, and the other end of the conveying section being connected to the outlet channel.

[0011] In some embodiments, the upper pressure conveyor belt further includes an upper diversion section, which is located downstream of and connected to the upper pressure conveyor section. The lower pressure conveyor belt further includes a lower diversion section, which is located downstream of and connected to the lower pressure conveyor section. The upper diversion section and the lower diversion section are arranged at intervals to form the outlet channel.

[0012] In some embodiments, the first acceleration device further includes a sorting component, the sorting component including a first baffle and a second baffle arranged opposite to each other along the width direction of the acceleration belt, the first baffle including a first guide section, the second baffle including a second guide section, the spacing between the first guide section and the second guide section gradually decreasing along the conveying direction of the acceleration belt, and the first guide section, the second guide section and the acceleration belt forming the product inlet.

[0013] In some embodiments, the printing waste rejection device further includes a good product conveying device, which includes a good product pressure conveyor belt and a good product output belt. The good product pressure conveyor belt is connected to the good product channel, and the good product output belt is located downstream of and connected to the good product pressure conveyor belt; and / or, the printing waste rejection device further includes a waste conveying device, which includes a waste product pressure conveyor belt and a waste product output belt. The waste product pressure conveyor belt is connected to the waste channel, and the waste product output belt is located downstream of and connected to the waste product pressure conveyor belt.

[0014] In some embodiments, the finished product conveying device further includes a paper pressing roller, which is disposed on the upper side of the finished product output belt, and the outer side wall of the paper pressing roller is in contact with the upper surface of the finished product output belt; the distance between the axis of the paper pressing roller and the finished product conveying belt is greater than or equal to the dimension of the printed matter along its own conveying direction.

[0015] In some embodiments, the printing waste rejection device further includes a waste detection device, an encoder, a photoelectric sensor, and a control device. The encoder is disposed against the outer wall of the roller, the photoelectric sensor is arranged facing the conveying section and connected to the frame, and the waste detection device is located upstream of the printing waste rejection device. The waste detection device, the encoder, and the photoelectric sensor are all electrically connected to the control device. The waste detection device is used to send a waste signal to the control device when waste is detected. The encoder is used to detect the running distance of the roller, the photoelectric sensor is used to acquire the paper head signal of the printed matter, and the control device is used to control the operation of the diverter based on the waste signal, the running distance of the roller, and the paper head signal.

[0016] The printing waste rejection device of this embodiment utilizes a diverter to divide the outlet channel into a good product channel and a waste product channel. The diverter's operation controls the switching between good product conveying mode and waste product conveying mode. If waste products appear in the printed matter, the diverter quickly activates when the waste products are conveyed to the diverter, blocking the good product channel and opening the waste product channel, allowing the waste products to be discharged through the waste product channel, thus achieving waste rejection. Compared with printing waste rejection devices in related technologies, the printing waste rejection device of this embodiment achieves rapid switching between good product conveying mode and waste product conveying mode through the rapid action of the diverter. The switching speed is faster, allowing for the separate rejection of printing waste products while ensuring continuous conveying of printed matter. The accuracy of waste rejection is higher, reducing the large amount of waste of qualified products during the rejection process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the planar structure of a printing waste rejection device according to an embodiment of the present invention.

[0018] Figure 2 This is a three-dimensional structural schematic diagram of a printing waste rejection device according to an embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of a first fish-scale stacking state, a second fish-scale stacking state, and an independently arranged state of a printed matter according to an embodiment of this utility model.

[0020] Figure 4 This is a schematic diagram of the structure of the second acceleration device of the printing waste rejection device according to an embodiment of the present invention.

[0021] Figure 5 This is a schematic diagram showing the connection between the upper pressure conveyor belt, the lower pressure conveyor belt, and the roller in a printing waste rejection device according to an embodiment of this utility model.

[0022] Figure 6 yes Figure 4 Enlarged diagram of point A in the middle.

[0023] Figure 7 This is a schematic diagram of the diversion device of a printing waste rejection device according to an embodiment of the present invention.

[0024] Figure 8 yes Figure 1 Enlarged diagram of point B in the middle.

[0025] Figure 9 This is a partial schematic diagram of a printing waste rejection device according to an embodiment of the present invention.

[0026] Figure label:

[0027] 100. Printing waste rejection device;

[0028] 1. Frame; 11. Operating side frame; 111. Waste outlet; 12. Transmission side frame; 13. Main drive motor;

[0029] 2. Diverting device; 21. Diverting component; 211. Mounting part; 212. Diverting part; 212-1. Good product surface; 212-2. Scrap product surface; 22. Diverting cylinder; 23. Rotating shaft; 24. Mounting rod; 25. Connecting rod;

[0030] 3. First acceleration device; 31. Acceleration belt; 311. Product inlet; 32. Sorting assembly; 321. First baffle; 322. Second baffle;

[0031] 4. Second acceleration device; 41. Outlet channel; 411. Good product channel; 412. Scrap product channel; 42. Upper pressure conveyor belt; 421. Upper pressure conveyor section; 422. Upper diversion section; 43. Lower pressure conveyor belt; 431. Lower pressure conveyor section; 432. Lower diversion section; 44. Roller; 441. First annular groove; 442. Second annular groove; 45. Secondary acceleration inlet;

[0032] 5. Blower assembly; 51. Nozzle; 52. Fixing rod; 53. Fixing clip;

[0033] 6. Tilting conveyor belt; 61. Tilting cylinder;

[0034] 7. Good product conveyor; 71. Good product pressure conveyor belt; 72. Good product output belt; 73. Paper pressure roller;

[0035] 8. Scrap conveying device; 81. Scrap conveyor belt; 82. Scrap output belt; 83. Baffle plate;

[0036] 9. Photoelectric sensor. Detailed Implementation

[0037] The embodiments of this utility model are described in detail below, with examples of the embodiments shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0038] like Figure 1 and Figure 2As shown, the printing waste rejection device 100 of this utility model embodiment includes a frame 1, a conveying device, and a diversion device 2. The conveying device is connected to the frame 1 and has a product inlet 311 for printing materials to enter and an outlet channel 41 for printing materials to exit. The diversion device 2 includes a diversion component 21, which is disposed in the outlet channel 41. The outlet channel 41 has a first side wall and a second side wall. A good product channel 411 is formed between the diversion component 21 and the first side wall, and a waste product channel 412 is formed between the diversion component 21 and the second side wall. The diversion component 21 is movably connected to the frame 1 so that the diversion device 2 can switch between a good product conveying mode with the good product channel 411 open and a waste product conveying mode with the waste product channel 412 open.

[0039] The printing waste rejection device 100 of this embodiment utilizes a diverter 21 to divide the outlet channel 41 into a good product channel 411 and a waste product channel 412. The diverter 21 controls the switching between good product conveying mode and waste product conveying mode. If waste products appear in the printed matter, when the waste products are conveyed to the diverter 2, the diverter 21 quickly activates, blocking the good product channel 411 and opening the waste product channel 412, allowing the waste products to be discharged through the waste product channel 412, thereby achieving waste product rejection. Compared with the printing waste rejection device 100 in related technologies, the printing waste rejection device 100 of this embodiment achieves rapid switching between good product conveying mode and waste product conveying mode through the rapid activation of the diverter 21. The switching speed is faster, allowing for the separate rejection of printing waste products while ensuring continuous conveying of printed matter. The accuracy of waste product rejection is higher, reducing the large amount of waste of qualified products during the rejection process.

[0040] The waste removal device 100 of this utility model embodiment is suitable for removing waste products from printed matter on a rotary printing press. It is known that a rotary printing press includes a printing main unit and a folding machine. The printing main unit is fed with roll paper, which, after printing, enters the folding machine. The folding machine cuts the roll paper into individual sheets and performs 2-3 folds, after which the sheets are output in a fish-scale stacked state at the folding machine's outlet. Because the printed matter is output from the folding machine in the first fish-scale stacked state, adjacent printed matter is stacked together. During the waste removal process, multiple good sheets before and after the waste product are carried into the waste channel 412, resulting in a large waste of good products.

[0041] In some embodiments, the conveying device includes a first acceleration device 3 and a second acceleration device 4 arranged in sequence. The printed matter enters the first acceleration device 3 in a first fish-scale stacked state. The operating speed of the first acceleration device 3 is greater than the initial speed of the printed matter entering the product inlet 311. The operating speed of the second acceleration device 4 is greater than the operating speed of the second acceleration device 4, so that the printed matter is output by the second acceleration device 4 in an independently arranged state.

[0042] The printed materials stacked in a fish-scale pattern are accelerated twice by the first acceleration device 3 and the second acceleration device 4, which slowly increases the spacing between the printed materials. This allows the printed materials to be output from the second acceleration device 4 in an independent arrangement and enter the diversion device 2. If the printed materials entering the diversion device 2 are defective, there is a certain distance between the defective materials and the good materials in front of and behind them. Therefore, defective materials can be removed without the need for an inclusive rejection method, allowing sufficient time for the diversion device 2 to switch modes, so as to achieve accurate rejection of single or multiple consecutive defective materials and improve rejection accuracy.

[0043] Of course, in other embodiments, if multiple printed materials are arranged independently when output from the printing equipment, the printing waste can be accurately removed simply by using the diversion device 2.

[0044] Specifically, such as Figure 3 As shown, the printed matter enters the first acceleration device 3 in the first fish-scale stacked state. In the first fish-scale stacked state, the distance between two adjacent printed matter heads is L1, and L1 is 40mm to 60mm.

[0045] After the printed matter is accelerated for the first time by the first acceleration device 3, the spacing between the printed matter is increased, and the printed matter is in a second fish-scale stacked state. The printed matter enters the second acceleration device 4 in the second fish-scale stacked state. In the second fish-scale stacked state, the spacing between two adjacent printed matter heads is L2, and L2 is 140mm to 160mm.

[0046] After being accelerated a second time by the second acceleration device 4, the printed matter is arranged independently. In the independent arrangement state, two adjacent printed matter are independent of each other, and the distance between the paper tail of the previous printed matter and the paper head of the next printed matter is L3, which is 90mm to 110mm, for example, 100mm.

[0047] like Figure 1 and Figure 2 As shown, the frame 1 includes an operating side frame 11 and a transmission side frame 12. The first acceleration device 3, the second acceleration device 4, and the diverting device 2 are all located between the operating side frame 11 and the transmission side frame 12, and are arranged sequentially from left to right along the left-right direction of the frame 1. The operating side frame 11 and the transmission side frame 12 provide the mounting base for the first acceleration device 3, the second acceleration device 4, and the diverting device 2. The transmission side frame 12 is equipped with a main drive motor 13 and a synchronous belt drive mechanism. The main drive motor 13 is connected to multiple transmission rollers of the first acceleration device 3 and the second acceleration device 4 through the synchronous belt drive mechanism, thereby providing power to the multiple transmission rollers of the first acceleration device 3 and the second acceleration device 4.

[0048] In some embodiments, the first acceleration device 3 includes an acceleration belt 31, the end of which away from the second acceleration device 4 has a product inlet 311; and / or the second acceleration device 4 includes an upper pressure conveyor belt 42, a lower pressure conveyor belt 43, and a roller 44. The roller 44 is rotatably connected to the frame 1, and the outer wall of the roller 44 has a first annular groove 441. The upper pressure conveyor belt 42 is disposed above the lower pressure conveyor belt 43. The upper pressure conveyor belt 42 includes an upper pressure conveying section 421, and the lower pressure conveyor belt 43 includes a lower pressure conveying section 431. At least a portion of the lower pressure conveying section 431 is disposed in the first annular groove 441 and fits against the bottom wall of the first annular groove 331. The upper pressure conveying section 421 fits against the lower pressure conveying section 431 to form a conveying section. One end of the conveying section is connected to the acceleration belt 31, and the other end of the conveying section is connected to the outlet channel 41.

[0049] Specifically, such as Figure 4 and Figure 5 As shown, the two ends of the roller 44 are rotatably mounted on the operating side frame 11 and the transmission side frame 12, respectively. One end of the central shaft of the roller 44 passes through the transmission side frame 12 and is connected to the main drive motor 13 via a synchronous belt drive mechanism. The outer wall of the roller 44 has a plurality of first annular grooves 441, which are arranged sequentially along the axial direction of the roller 44.

[0050] Both the upper pressure conveyor belt 42 and the lower pressure conveyor belt 43 include multiple belts, which are evenly distributed along the axial direction of the roller 44. The coverage area of ​​the multiple belts along the axial direction of the roller 44 matches the size of the printed matter along the axial direction of the roller 44 to ensure the stability of the printed matter conveying.

[0051] The upper pressure conveyor belt 42 is located on the upper side of the roller 44, and the lower pressure conveyor belt 43 is located on the lower side of the upper pressure conveyor belt 42. A portion of the lower pressure conveyor section 431 is attached to the upper side of the outer wall of the roller 44, and multiple belts of the lower pressure conveyor section 431 are respectively located in multiple first annular grooves 441. Multiple belts of the upper pressure conveyor section 421 correspond one-to-one with multiple belts of the lower pressure conveyor section 431 to press and convey the printed matter. The upper pressure conveyor belt 42 extends upward on the side near the first acceleration device 3, and the lower pressure conveyor belt 43 extends downward on the side near the first acceleration device 3 to form a secondary acceleration inlet 45 at the end of the conveying section near the first acceleration device 3. After being accelerated by the first acceleration device 3, the printed matter enters the conveying section through the secondary acceleration inlet 45 and is pressed from left to right by the upper pressure conveyor section 421 and the lower pressure conveyor section 431, so that the printed matter changes from the second fish scale stacking state to an independent arrangement state.

[0052] The groove depth of the first annular groove 441 on the outer wall of the roller 44 is equal to the belt thickness of the lower pressing section 431. When the multiple belts of the lower pressing section 431 run in the first annular groove 441, the upper surface of the lower pressing section 431 is flush with the outer circular surface of the roller 44, and the lower surface of the printed matter is in contact with the outer circular surface of the roller 44, thereby ensuring the flatness of the printed matter.

[0053] Both the upper pressure conveyor belt 42 and the lower pressure conveyor belt 43 are enclosed conveyor belts. The upper pressure conveyor belt 42 is equipped with multiple upper drive rollers and surrounds the multiple upper drive rollers. One of the upper drive rollers is connected to the main drive motor 13 through a synchronous belt drive mechanism. The lower pressure conveyor belt 43 is also equipped with multiple lower drive rollers and surrounds the multiple lower drive rollers. The lower part of the lower pressure conveyor belt 43 is attached to the lower side of the outer wall of the roller 44 and fits in the first annular groove 441 of the outer wall of the roller 44, so that the roller 44 drives the lower pressure conveyor belt 43 to run. Thus, the main drive motor 13 can provide running power for the second acceleration device 4.

[0054] The upper pressure conveyor belt 42, the lower pressure conveyor belt 43, and the roller 44 all run at the same speed, and all of them are faster than the running speed of the first acceleration device 3, thereby achieving a second acceleration of the printed matter, which transforms the printed matter from the second fish-scale stacked state to an independent arrangement state. The first acceleration device 3 and the second acceleration device 4 are connected to the main drive motor 13 through a synchronous belt drive mechanism with different transmission ratios, so that the main drive motor 13 can drive the first acceleration device 3 and the second acceleration device 4 to run.

[0055] Optionally, the diameter of the roller 44 is 460mm to 480mm; in this embodiment of the present invention, the diameter of the roller 44 is 477mm.

[0056] In some embodiments, the upper pressure conveyor belt 42 further includes an upper diversion section 422, which is located downstream of and connected to the upper pressure conveyor section 421. The lower pressure conveyor section 431 further includes a lower diversion section 432, which is located downstream of and connected to the lower pressure conveyor section 431. The upper diversion section 422 and the lower diversion section 432 are arranged at intervals to form the aforementioned outlet channel 41.

[0057] In some embodiments, the size of the outlet channel 41 in the thickness direction of the printed matter gradually increases along the conveying direction of the printed matter. The diverter 21 includes a mounting part 211 and a diverter 212. The mounting part 211 is movably connected to the frame 1, and the size of the diverter 212 in the thickness direction of the printed matter gradually increases along the conveying direction of the printed matter.

[0058] Specifically, such as Figure 4 and Figure 6As shown, the outlet channel 41 is formed between the lower side of the upper diversion section 422 and the upper side of the lower diversion section 432. The lower side of the upper diversion section 422 forms the first sidewall of the outlet channel 41, and the upper side of the lower diversion section 432 forms the second sidewall of the outlet channel 41. The diversion section 212 is located within the outlet channel 41 along the radial direction of the roller 44. The first and second sidewalls gradually move away from each other along the printing conveying direction, that is, the dimension of the outlet channel 41 in the printing thickness direction gradually increases along the printing conveying direction. The first and second sidewalls of the outlet channel 41 form an included angle α, which is 30° to 50°. In this embodiment of the present invention, 40° is used as an example.

[0059] like Figure 6 and Figure 7 As shown, the outer wall of the roller 44 has a plurality of second annular grooves 442. The plurality of second annular grooves 442 and the plurality of first annular grooves 441 are arranged alternately along the axial direction of the roller 44. The diverter 21 corresponds to the second annular grooves 442 along the radial direction of the roller 44. The plurality of diverter 21 and the plurality of upper pressure conveyor belts 42 are arranged alternately along the axial direction of the roller 44.

[0060] The diversion section 212 includes a good product surface 212-1 and a waste product surface 212-2. The good product surface 212-1 is arranged facing the first side wall of the outlet channel 41 to form a good product channel between them, and the waste product surface 212-2 is arranged facing the second side wall of the outlet channel 41 to form a waste product channel between them. The good product surface 212-1 and the waste product surface 212-2 gradually approach each other in the direction close to the conveying section, that is, the size of the diversion section 212 in the thickness direction of the printed matter gradually increases in the conveying direction of the printed matter, so that the end of the diversion section 212 near the conveying section forms a tip, which is more conducive to guiding and diverting the printed matter.

[0061] When the diversion device 2 is in the good product conveying mode, the tip of the diversion part 212 is located in the second annular groove 442, and a part of its waste surface 212-2 is attached to the bottom wall of the second annular groove 442. The waste channel 412 is blocked, the good product channel 411 is opened, and the good product surface 212-1 is smoothly connected to the second side wall of the outlet channel 41, which is more conducive to the printed materials output from the conveying section entering the good product channel 411.

[0062] When the diversion device 2 is in waste conveying mode, the diversion section 212 moves upward, and its good product surface 212-1 crosses the first side wall of the outlet channel 41, blocking the good product channel 411 and opening the waste channel 412. Furthermore, the waste product surface 212-2 smoothly connects with the first side wall of the outlet channel 41, which is more conducive to the entry of printed materials output from the conveying section into the waste channel 412. This achieves the diversion of good and waste products. Good products are output through the good product channel 411 and enter the next process, while waste products are discharged through the waste channel 412, thus achieving precise waste rejection.

[0063] In some embodiments, the diversion device 2 further includes a drive member and a rotating shaft 23, the rotating shaft 23 being rotatably connected to the frame 1, the diversion member 21 being connected to the rotating shaft 23, and the drive member being connected to the frame 1, the drive member being used to drive the rotating shaft 23 to rotate.

[0064] Specifically, such as Figure 6 and Figure 7 As shown, the axial direction of the rotating shaft 23 is parallel to the axial direction of the roller 44. The two ends of the rotating shaft 23 are rotatably connected to the operating side frame 11 and the transmission side frame 12, respectively. The diversion device 2 also includes a mounting rod 24, which is parallel to the rotating shaft 23. The two ends of the mounting rod 24 are respectively connected to supports by bolts, and the supports are connected to the rotating shaft 23 by a shaft. The mounting part 211 of the diversion component 21 is fixedly connected to the mounting rod 24 by bolts. There are multiple diversion components 21, which are evenly arranged along the axial direction of the rotating shaft 23. The multiple diversion components 21, the multiple belts of the lower pressing conveyor belt 43, and the multiple belts of the upper pressing conveyor belt 42 are set in a corresponding manner. The operation of multiple diversion components 21 can be controlled simultaneously by the rotating shaft 23.

[0065] The driving component is a diversion cylinder 22, which is located at one end of the rotating shaft 23 near the operating side frame 11. The cylinder body of the diversion cylinder 22 is hinged to the operating side frame 11 via a support shaft. A connecting rod 25 is provided between the piston rod of the diversion cylinder 22 and the rotating shaft 23. One end of the connecting rod 25 is hinged to the piston rod of the diversion cylinder 22, and the other end of the connecting rod 25 is fixedly connected to the rotating shaft 23. Thus, the diversion cylinder 22 can drive the rotating shaft 23 to rotate, thereby driving multiple diversion components 21 to move, realizing the switching between good product conveying mode and waste product conveying mode.

[0066] Optionally, such as Figure 8 As shown, the second acceleration device 4 also includes a blowing assembly 5, which is located at the secondary acceleration inlet 45 and connected to the frame 1.

[0067] Specifically, such as Figure 8 As shown, the blowing assembly 5 includes a nozzle 51, a fixing rod 52, and a fixing clamp 53. The fixing rod 52 extends along the width direction of the acceleration belt 31 and its two ends are fixedly connected to the frame 1. The fixing clamp 53 is connected to the fixing rod 52 by a shaft. The nozzle 51 is connected to the fixing clamp 53 by bolts. The air outlet direction of the nozzle 51 can be adjusted by the fixing clamp 53. There are multiple nozzles 51. In this embodiment of the present invention, two nozzles are used as an example. The two nozzles 51 are arranged at intervals along the width direction of the acceleration belt 31 and are located on the upper side of the printed material. The air outlet of the nozzle 51 is arranged facing the downward pressing conveyor belt 43.

[0068] When the printed matter enters the second acceleration device 4 from the first acceleration device 3, the nozzle 51 blows air onto the printed matter entering the second acceleration device 4 to prevent the printed matter from opening up and being damaged during the pressing process, thereby improving the stability of the printed matter being transported in the second acceleration device 4.

[0069] In addition, the blowing assembly 5 also includes components such as an air pump and a control valve to provide airflow to the nozzle 51. This part of the structure is well known to those skilled in the art and will not be described in detail here.

[0070] In some embodiments, the first acceleration device 3 further includes a sorting component 32, which includes a first baffle 321 and a second baffle 322 arranged opposite to each other along the width direction of the acceleration belt 31. The first baffle 321 includes a first guide section, and the second baffle 322 includes a second guide section. The distance between the first guide section and the second guide section gradually decreases along the conveying direction of the acceleration belt 31. The first guide section, the second guide section and the acceleration belt 31 form a product inlet 311.

[0071] Specifically, such as Figure 1 and Figure 2 As shown, the acceleration belt 31 extends along the left and right direction of the frame 1. The acceleration belt 31 includes a belt body and multiple drive rollers. The belt body is arranged around the multiple drive rollers. The two ends of the drive rollers are rotatably mounted on the operating side frame 1 and the transmission side frame 1, respectively. One of the drive rollers is connected to the main drive motor 13 through a synchronous belt drive mechanism. Thus, the main drive motor 13 can drive the acceleration belt 31 to run.

[0072] The left end of the acceleration belt 31 forms the product inlet 311. The running speed of the acceleration belt 31 is greater than the initial speed of the printed matter entering the product inlet 311. By accelerating the printed matter for the first time, the spacing between the printed matter can be initially increased.

[0073] like Figure 6 As shown, the first baffle 321 and the second baffle 322 are symmetrically arranged along the width direction of the acceleration belt 31. The first baffle 321 includes an integrally formed first guide section and a first limiting section. The second baffle 322 includes an integrally formed second guide section and a second limiting section. The first guide section and the second guide section gradually approach each other from left to right and are respectively connected to the first limiting section and the second limiting section. The distance between the first limiting section and the second limiting section matches the size of the printed matter in the width direction of the acceleration belt 31. Thus, the printed matter enters between the first baffle 321 and the second baffle 322 from the product inlet 311. The first baffle 321 and the second baffle 322 can limit the printed matter, making the printed matter neatly arranged, in preparation for the subsequent rejection action.

[0074] In addition, the sorting assembly 32 also includes an adjustment mechanism for driving the first baffle 321 and the second baffle 322 to move relative to each other. The adjustment mechanism allows the distance between the first baffle 321 and the second baffle 322 to be manually adjusted, so that the sorting assembly 32 can be used for printed materials of different sizes. The adjustment mechanism includes components such as a two-way lead screw, a slide rail and a handwheel. This adjustment mechanism is a technology well known to those skilled in the art and will not be described in detail here.

[0075] Optionally, such as Figure 1 and Figure 2 As shown, the printing waste rejection device 100 also includes a reversing conveyor belt 6, which is located upstream of the first acceleration device 3.

[0076] Specifically, such as Figure 5 and Figure 6 As shown, the flip conveyor belt 6 is located upstream of the acceleration belt 31 and extends in the left-right direction. The right end of the flip conveyor belt 6 shares a drive roller with the acceleration belt 31 to ensure that the flip conveyor belt 6 and the acceleration belt 31 have the same running speed. The printed matter output from the folding machine enters the acceleration belt 31 via the flip conveyor belt 6.

[0077] Two tilting cylinders 61 are provided on the lower side of the tilting conveyor belt 6. The two tilting cylinders 61 are arranged at intervals along the width direction of the tilting conveyor belt 6. The tilting cylinders 61 are tilted downward from left to right. The cylinder body of the tilting cylinder 61 is hinged to the frame 1, and the piston rod of the tilting cylinder 61 is hinged to the tilting conveyor belt 6.

[0078] When the rotary printing press is running normally, the rotating conveyor belt 6 keeps running horizontally. When paper blockage or other malfunctions occur during the operation of the equipment, the piston rod of the rotating cylinder 61 extends and controls the rotating conveyor belt 6 to rotate upward. The printed matter is discharged downward before the rotating conveyor belt 6, which can prevent the printed matter from entering the printing waste rejection device. After the malfunction is eliminated and confirmed by manual inspection, the rotating conveyor belt 6 is reset.

[0079] In some embodiments, the printing waste rejection device 100 further includes a good product conveying device 7, which includes a good product conveying belt 71 and a good product output belt 72. The good product conveying belt 71 is connected to the good product channel 411, and the good product output belt 72 is located downstream of and connected to the good product conveying belt 71; and / or the printing waste rejection device further includes a waste conveying device 8, which includes a waste conveying belt 81 and a waste output belt 82. The waste conveying belt 81 is connected to the waste channel 412, and the waste output belt 82 is located downstream of and connected to the waste conveying belt 81.

[0080] In some embodiments, the good product conveying device 7 further includes a paper pressing roller 73, which is disposed on the upper side of the good product output belt 72, and the outer side wall of the paper pressing roller 73 is in contact with the upper surface of the good product output belt 72; the distance between the axis of the paper pressing roller 73 and the good product conveying belt 71 is greater than or equal to the size of the printed matter along its own conveying direction.

[0081] Specifically, such as Figure 4As shown, the good product pressure conveyor belt 71 is located below the upper pressure conveyor belt 42. The good product pressure conveyor belt 71 and a part of the upper pressure conveyor belt 42 form a good product pressure conveying channel. One end of the good product pressure conveying channel is connected to the good product channel 411. After the good product is output from the good product channel 411, it enters the good product pressure conveying channel, which can improve the stability of the good product output.

[0082] The waste conveyor belt 81 is located below the good product conveyor belt 71. The waste conveyor belt 81 includes two conveyor belts, and the belts of the two conveyor belts are fitted together to form a waste conveying channel. One end of the waste conveying channel is connected to the waste channel 412, and the other end extends downward at an incline. After the waste is output from the waste channel 412, it enters the waste conveying channel, which can improve the stability of the waste output.

[0083] Both the good product conveyor belt 71 and the waste product conveyor belt 81 are driven by the main drive motor 13 to ensure the continuous operation of the printing waste rejection device.

[0084] like Figure 9 As shown, the good product output belt 72 extends horizontally, and the left end of the good product output belt 72 is connected to the other end of the good product pressure conveying channel. The good products are output horizontally from left to right after passing through the good product channel 411, the good product pressure conveying channel and the good product output belt 72 in sequence, and then enter the next process.

[0085] A shaft is inserted through the center of the pressure roller 73. The two ends of the shaft are fixed to the operating side frame 11 and the transmission side frame 12 by supports, respectively. There are two pressure rollers 73, which are arranged at intervals along their shafts. The pressure rollers 73 are rotatably connected to the shafts by bearings. The distance between the pressure rollers 73 and the outlet of the good product conveying channel is equal to the size of the printed matter in its conveying direction. The good product output speed from the good product conveying channel is relatively fast. It is directly inserted into the gap between the pressure rollers 73 and the good product output belt 72. The pressure rollers 73 can block the good products and prevent the printed matter from flying out. Multiple good products are blocked by the pressure rollers 73 in sequence and conveyed out by the pressure rollers 73, so that the multiple good products are converted back into a fish-scale stacked state and enter the next process in a fish-scale stacked state.

[0086] The waste output belt 82 is located near the bottom of the frame 1. The waste output belt 82 and the outlet of the waste conveying channel are at a certain distance in the height direction. The waste output from the waste conveying channel falls onto the waste output belt 82. The conveying direction of the waste conveyor belt is perpendicular to the circumference of the roller 44. The operating side frame 11 is provided with a waste outlet 111, and a part of the waste output belt 82 passes through the waste outlet 111.

[0087] In addition, a baffle plate 83 is provided on the side of the scrap output belt 82 away from the scrap conveyor belt 81. The baffle plate 83 is used to block the scrap flying out of the scrap conveyor belt 81 and ensure that the scrap falls onto the scrap output belt 82.

[0088] The drive mechanism of the waste output belt 82 is set separately so that the operation of the waste conveyor belt can be controlled independently by its drive mechanism. When no waste products appear in the printed matter, the waste conveyor belt stops running. When waste products appear in the printed matter, the waste products are collected on the waste output belt 82. When the waste products on the waste output belt 82 accumulate to a certain amount, its drive mechanism is activated to output the waste products to the printing waste rejection device.

[0089] In some embodiments, the printing waste rejection device 100 further includes a waste detection device, an encoder, a photoelectric sensor 9, and a control device. The encoder is disposed against the outer wall of the roller 44, the photoelectric sensor 9 is arranged facing the conveyor section and connected to the frame, and the waste detection device is located upstream of the printing waste rejection device. The waste detection device, the encoder, and the photoelectric sensor 9 are all electrically connected to the control device. The waste detection device is used to send a waste signal to the control device when waste is detected. The encoder is used to detect the running distance of the roller 44. The photoelectric sensor 9 is used to acquire the paper head signal of the printed matter. The control device is used to control the operation of the diverter 21 based on the waste signal, the running distance of the roller 44, and the paper head signal.

[0090] like Figure 1 As shown, the photoelectric sensor 9 is located on the upper side of the conveyor section and corresponds to the axis of the roller 44 in the vertical direction. The sensing head of the photoelectric sensor 9 is arranged downwards. The position of the sensing head of the photoelectric sensor 9 in the axial direction of the roller 44 is located between the two belts of the upper pressure conveyor belt 42, so that the photoelectric sensor 9 can detect the printed matter passing through the conveyor section. The photoelectric sensor 9 is used to detect the paper head signal of the printed matter and transmit the paper head signal to the control device. The paper head signal refers to the signal generated when the paper head passes through the photoelectric sensor 9.

[0091] Optionally, the defect detection device is located between the printing press and the folding machine. The working principle of the defect detection device is as follows: after printing begins, once the machine confirms that there are no problems with the printing quality, a real-time printing image is captured by a camera as a template. Then, each printed product being printed is inspected in real time. If a product with printing defects is encountered, the defect detection device sends a defect signal to the control device and outputs an alarm. At the same time, an inkjet mark is made outside the finished product cut line of the defective page.

[0092] When the waste detection device does not detect any waste products, the diversion device 2 is in good product conveying mode. After the printed products pass through the conveying section, they directly enter the good product channel 411 and then enter the next process.

[0093] When the waste detection device detects waste, it sends a waste signal to the control device. When the control device receives the waste signal, it uses the encoder to detect the first running distance generated by the roller 44 when the waste is transported to the corresponding position of the photoelectric sensor 9 on the roller 44, and the second running distance generated by the roller 44 when the waste is transported to the diversion device 2. It calculates the first time when the waste reaches the corresponding position of the photoelectric sensor 9 on the roller 44 based on the first running distance, and calculates the second time when the waste reaches the diversion device 2 based on the second running distance.

[0094] Simultaneously, when the control device is about to reach the first time, it detects the waste paper head information through the photoelectric sensor 9. In this embodiment, the waste paper head information refers to the moment when the waste paper head passes the photoelectric sensor 9. The second time is finely adjusted based on this moment to determine the accurate time when the waste paper head arrives at the diversion device 2.

[0095] The encoder and photoelectric sensor 9 determine the exact time when the waste product arrives at the diversion device 2. After the previous good product passes through the good product channel 411, the control device controls the piston rod of the diversion cylinder 22 to extend, so that the diversion component 21 stops at the upper diversion section 422, the waste product channel 412 opens, and the waste product is discharged through the waste product channel 412. After the waste product has completely passed through the waste product channel 412, the control device controls the piston rod of the diversion cylinder 22 to retract, so that the diversion component 21 stops at the lower diversion section 432, and the good product channel 411 reopens, so that the next good product can enter the good product channel 411. In this way, the single-sheet precise rejection of waste products can be achieved, which greatly improves the accuracy of waste rejection.

[0096] Optionally, the control device is a PLC controller.

[0097] Optionally, the printing machine is also equipped with an encoder, which is electrically connected to the control device.

[0098] The encoders on the printing main unit and the roller 44 ensure that the operating speed of the printing waste rejection device keeps pace with the speed of the printing main unit.

[0099] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0100] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0101] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0102] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0103] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0104] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A printing waste rejection device, characterized in that, The device includes a frame, a conveying device, and a diversion device. The conveying device is connected to the frame and has a product inlet for printed materials to enter and an outlet channel for printed materials to exit. The diversion device includes a diversion component disposed in the outlet channel. The outlet channel has a first sidewall and a second sidewall. A good product channel is formed between the diversion component and the first sidewall, and a waste product channel is formed between the diversion component and the second sidewall. The diversion component is movably connected to the frame so that the diversion device can switch between a good product conveying mode with the good product channel open and a waste product conveying mode with the waste product channel open.

2. The printing waste rejection device according to claim 1, characterized in that, The dimension of the outlet channel in the thickness direction of the printed matter gradually increases along the conveying direction of the printed matter. The diverting component includes a mounting part and a diverting part. The mounting part is movably connected to the frame. The dimension of the diverting part in the thickness direction of the printed matter gradually increases along the conveying direction of the printed matter.

3. The printing waste rejection device according to claim 2, characterized in that, The diversion device further includes a drive component and a rotating shaft. The rotating shaft is rotatably connected to the frame. The diversion component is connected to the rotating shaft. The drive component is connected to the frame. The drive component is used to drive the rotating shaft to rotate.

4. The printing waste rejection device according to claim 1, characterized in that, The conveying device includes a first acceleration device and a second acceleration device arranged in sequence. The printed matter enters the first acceleration device in a first fish-scale stacked state. The operating speed of the first acceleration device is greater than the initial speed of the printed matter entering the product inlet. The operating speed of the second acceleration device is greater than the operating speed of the second acceleration device, so that the printed matter is output by the second acceleration device in an independent arrangement state.

5. The printing waste rejection device according to claim 4, characterized in that, The first acceleration device includes an acceleration belt, the end of which, away from the second acceleration device, has the product inlet; and / or The second acceleration device includes an upper pressure conveyor belt, a lower pressure conveyor belt, and a roller. The roller is rotatably connected to the frame. The outer wall of the roller has a first annular groove. The upper pressure conveyor belt is disposed above the lower pressure conveyor belt. The upper pressure conveyor belt includes an upper pressure conveying section, and the lower pressure conveyor belt includes a lower pressure conveying section. At least a portion of the lower pressure conveying section is disposed within the first annular groove and adheres to the bottom wall of the first annular groove. The upper pressure conveying section adheres to the lower pressure conveying section to form a conveying section. One end of the conveying section is connected to the acceleration belt, and the other end of the conveying section is connected to the outlet channel.

6. The printing waste rejection device according to claim 5, characterized in that, The upper pressure conveyor belt also includes an upper diversion section, which is located downstream of and connected to the upper pressure conveyor section. The lower pressure conveyor belt also includes a lower diversion section, which is located downstream of and connected to the lower pressure conveyor section. The upper diversion section and the lower diversion section are arranged at intervals to form the outlet channel.

7. The printing waste rejection device according to claim 5, characterized in that, The first acceleration device further includes a sorting component, which includes a first baffle and a second baffle arranged opposite to each other along the width direction of the acceleration belt. The first baffle includes a first guide section, and the second baffle includes a second guide section. The distance between the first guide section and the second guide section gradually decreases along the conveying direction of the acceleration belt. The first guide section, the second guide section, and the acceleration belt form the product inlet.

8. The printing waste rejection device according to any one of claims 1-7, characterized in that, The printing waste rejection device further includes a good product conveying device, which comprises a good product pressure conveyor belt and a good product output belt. The good product pressure conveyor belt is connected to the good product channel, and the good product output belt is located downstream of and connected to the good product pressure conveyor belt; and / or The printing waste rejection device also includes a waste conveying device, which includes a waste conveying belt and a waste output belt. The waste conveying belt is connected to the waste channel, and the waste output belt is located downstream of the waste conveying belt and connected to it.

9. The printing waste rejection device according to claim 8, characterized in that, The finished product conveying device further includes a paper pressing roller, which is located on the upper side of the finished product output belt, and the outer side wall of the paper pressing roller is in contact with the upper surface of the finished product output belt; the distance between the axis of the paper pressing roller and the finished product conveying belt is greater than or equal to the dimension of the printed product along its own conveying direction.

10. The printing waste rejection device according to claim 5, characterized in that, The printing waste rejection device also includes a waste detection device, an encoder, a photoelectric sensor, and a control device. The encoder is set against the outer wall of the roller, the photoelectric sensor is arranged facing the conveying section and connected to the frame, and the waste detection device is located upstream of the printing waste rejection device. The waste detection device, the encoder, and the photoelectric sensor are all electrically connected to the control device. The waste detection device is used to send a waste signal to the control device when waste is detected. The encoder is used to detect the running distance of the roller. The photoelectric sensor is used to acquire the paper head signal of the printed matter. The control device is used to control the operation of the diverter based on the waste signal, the running distance of the roller, and the paper head signal.

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