A large-width high-speed bottom paper extraction folding machine

Abstract

A high-speed, wide-format bottom-folding paper folding machine includes a folding system, a stacking system, and a storage system. A material distribution and conveying system is located at the bottom end of the storage system. The storage system includes a support frame, a transmission chain assembly, a drive system, and multiple paper storage racks. The transmission chain assembly includes multiple transmission sprockets and transmission chains, with each paper storage rack circulating along with the transmission chain. The material distribution and conveying system includes a flipping feeding component, which removes the paper stack from the paper storage racks, rotates it 90°, and lays it down before transporting it to the corresponding cutting machine via a conveyor line. In this invention, the width of the folding system is the same as the width of the original paper roll, allowing the paper roll to be directly fed into the folding system, eliminating the need for a slitting process. At least two cutting machines can be equipped simultaneously using the storage system and the material distribution and conveying system, and the machine does not need to be stopped if any of the folding system, stacking system, or material distribution and conveying system malfunctions, thereby improving production efficiency.

Description

Technical Field

[0001] This invention relates to the field of tissue paper processing equipment, and in particular to a wide-format, high-speed bottom tissue paper folding machine. Background Technology

[0002] Existing disposable tissue boxes typically have the tissue opening facing upwards. Tissues facing upwards are more susceptible to oil contamination or water damage. In restrooms, rolls of paper towels are usually installed facing downwards, which are less convenient than tissue boxes. Therefore, bottom-mounted tissue boxes with the opening facing downwards have emerged on the market. This type of packaging is convenient to use and less prone to contamination.

[0003] Currently, the production process for bottom-flush tissues is as follows: raw paper roll – slitting – folding – cutting – packaging. Because the width of existing folding machines is only half the width of the raw paper roll, the raw paper rolls from the paper machine need to be rewound and slitted before entering the folding machine. Furthermore, the bottom-flush tissue production line lacks a paper storage structure; the folded paper stacks in the folding machine need to be pushed out from the side and then conveyed to the cutting machine. Since various pieces of equipment need to operate synchronously, if one piece of equipment stops working, the others must also stop, impacting production efficiency. Summary of the Invention

[0004] Based on this, the purpose of the present invention is to provide a large-format, high-speed bottom-folding paper drawer that eliminates the slitting process, allows the raw paper roll to be directly fed into the folding system, and can be equipped with at least two or more cutting machines simultaneously through a material storage system to improve production efficiency.

[0005] A high-speed, wide-format bottom-flush paper folding machine includes a folding system that directly feeds into a paper roll, and a stacking system located inside the folding system. The bottom of the stacking system is equipped with a storage system, and the bottom end of the storage system is equipped with a material conveying system. The storage system includes a support frame, a transmission chain assembly symmetrically arranged on the left and right sides of the support frame, a drive system connected to the transmission chain assembly, and multiple paper storage racks for placing paper stacks. The transmission chain assembly includes multiple transmission sprockets installed in the support frame, and transmission chains connecting the multiple transmission sprockets. Each paper storage rack has its two ends connected to the transmission chains on both sides, and moves in a circular motion with the transmission chains. When an empty paper storage rack moves upward from the bottom of the stacking system, the folded paper stack is taken out from the stacking system. The material distribution and conveying system includes at least two sets of flipping feeding components. Each set of flipping feeding components is used to remove the paper stack from the paper storage rack, rotate it 90° and lay it down, and then transport it to the corresponding cutting machine through the conveyor line.

[0006] Compared with the prior art, in this invention, the width of the folding system is the same as the width of the original paper roll, and the original paper roll is directly connected to the folding system to eliminate the slitting process; at least two or more cutting machines can be equipped at the same time through the storage system and the material distribution and conveying system, and when one of the folding system, the stacking system or the material distribution and conveying system fails, there is no need to stop the machine, thereby improving production efficiency.

[0007] Furthermore, the paper storage rack includes a crossbar and a plurality of support frames mounted on the crossbar; Each of the support frames has an upward-facing U-shaped notch on its side, and the paper stack is located in the U-shaped notch; The end of the crossbar is provided with a connecting plate, and the outer surface of the connecting plate is provided with a connecting post that is connected to the transmission chain.

[0008] Furthermore, the two drive sprockets located at the bottom of the stacking system and on the same side are on the same vertical line; The stacking system is provided with multiple stacking supports, and the folded paper stacks are located in the stacking supports. The support frame on each crossbar is staggered with the stacking support.

[0009] Furthermore, the support frame is provided with an upper guide rail, a vertical guide rail and a lower guide rail, and the side of the vertical guide rail is provided with a lower outlet and an upper outlet; An upper roller and a lower roller are installed on the same side of the connecting plate, and the upper roller and the U-shaped bayonet are respectively located on both sides of the crossbar; During the process of the support frame removing the paper stack from the stacking system, the lower roller enters from the right side of the lower guide rail, passes sequentially through the lower guide rail and the vertical guide rail, and exits from the upper exit. The upper roller enters the vertical guide rail from the lower exit, passes sequentially through the vertical guide rail and the upper guide rail, and exits from the right side of the upper guide rail.

[0010] Furthermore, auxiliary guide rails are provided at the bottom of the upper guide rail and the top of the lower guide rail, and the corresponding transmission chains are located in the auxiliary guide rails.

[0011] Furthermore, the flipping feeding assembly includes a base frame mounted on the support frame, a flipping assembly disposed on the base frame, and a clamping feeding assembly disposed on the flipping assembly; The base frame is equipped with a sensor. When the sensor detects a support frame containing a stack of paper, the flipping component drives the clamping and feeding component to flip from a horizontal state to a vertical state. The clamping and feeding component clamps the stack of paper. After the support frame descends, the flipping component drives the clamping and feeding component to flip from a vertical state to a horizontal state.

[0012] Furthermore, the tilting assembly includes a first cylinder, a drive shaft, and a driven shaft mounted on the base frame, wherein the first cylinder is rotatably mounted on the base frame; The end of the drive shaft is rotatably provided with a flipping block, the flipping block extends downward toward the driven shaft and is rotatably connected to the actuating end of the first cylinder, and the end of the flipping block toward the first cylinder is provided with a guide groove. One side of the clamping and feeding assembly is mounted on the driven shaft, and the other side is connected to the guide bar groove via an auxiliary bearing.

[0013] Furthermore, the clamping and feeding assembly includes a wall panel, a crossbeam connecting two of the wall panels, a panel installed between the two crossbeams, and a first belt feeding assembly embedded in the panel. Multiple baffles are installed on one side of the panel, and the baffles are offset from the U-shaped slots on the support frame. A pressure plate is movably mounted on the other side of the panel, and the pressure plate is connected to a synchronous belt drive assembly mounted at the bottom of the panel; One end of the wall panel near the baffle is connected to the driven shaft, and the other end is connected to the auxiliary bearing.

[0014] Furthermore, the storage system is provided with a waste conveying assembly, which includes a support beam installed on the support frame and a second belt conveyor assembly disposed on the support beam; The second belt feeding assembly has a first baffle plate on one side and a second baffle plate on the other side; An auxiliary beam is rotatably mounted on one end of the support beam near the second belt feeding assembly. The auxiliary beam is provided with multiple auxiliary L-plates, and the auxiliary L-plates are misaligned with the U-shaped slots on the support frame. A second cylinder is rotatably mounted on one end of the support beam near the support frame, and the actuating end of the second cylinder is rotatably connected to a connecting block mounted on the auxiliary beam.

[0015] Furthermore, the storage system is provided with a lifting storage assembly, which includes a top sprocket installed on the top of the support frame, a bottom sprocket installed at the bottom, a lifting chain connecting the top sprocket and the bottom sprocket, and a lifting plate; One end of the lifting chain passes around the top sprocket and connects to the top of the lifting plate, while the other end passes around the bottom sprocket and connects to the bottom of the lifting plate. The two lifting plates are connected by a lifting beam. The top of the lifting plate is provided with a row of drive sprockets and the bottom is provided with a row of drive sprockets. The paper storage rack containing paper stacks passes through the top drive sprockets, and the empty paper storage rack passes through the bottom drive sprockets. The drive system includes a first drive component and a second drive component. The first drive component is located between the lifting and storing component and the stacking system and is connected to one of the drive sprockets. The second drive component is located at the end of the material distributing and conveying system and is connected to one of the drive sprockets. When the driving speed of the first driving component is greater than the driving speed of the second driving component, the lifting and storage component descends; conversely, when the driving speed of the second driving component is less than the driving speed of the third driving component, the lifting and storage component ascends. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the large-format, high-speed bottom paper folding machine in this invention. Figure 2 for Figure 1 Side view; Figure 3 for Figure 2 Remove the side view of the folding and stacking systems; Figure 4 for Figure 2 A schematic diagram of a paper storage rack containing stacks of paper; Figure 5 for Figure 3 A schematic diagram of the structure at the left end of the central support frame; Figure 6 for Figure 5 Plan view of the upper guide rail, vertical guide rail, and lower guide rail; Figure 7 for Figure 1 Schematic diagram of the tilting feeding component in the center-distribution material conveying system; Figure 8 for Figure 7 A schematic diagram of the tilting component in the tilting feeding assembly; Figure 9 for Figure 7 A schematic diagram of the gripping and feeding component in the central flipping feeding assembly; Figure 10 for Figure 3 Schematic diagram of the waste conveying assembly; Figure 11 for Figure 3 A schematic diagram of the structure of the lifting and storage component.

[0017] Explanation of key component symbols: 100. Folding system; 200. Stacking system; 300. Material storage system; 30. Support frame; 31. Drive chain assembly; 311. Drive sprocket; 312. Drive chain; 32. Paper storage rack; 321. Crossbar; 322. Support frame; 323. Connecting plate; 3231. Upper roller; 3232. Lower roller; 324. Connecting column; 33. Upper guide rail; 34. Vertical guide rail; 341. Lower outlet; 342. Upper outlet; 35. Lower guide rail; 36. 37. Auxiliary guide rail; 371. Waste conveying assembly; 372. Support beam; 273. Second belt conveyor assembly; 374. First baffle plate; 375. Second baffle plate; 376. Auxiliary beam; 377. Auxiliary L-plate; 378. Second cylinder; 379. Connecting block; 300. Lifting and storage assembly; 381. Top sprocket; 382. Bottom sprocket; 383. Lifting chain; 384. Lifting plate; 385. Lifting crossbeam; 400. Material distribution and conveying system; 40. Tilting feeding assembly; 401. Base frame; 402. Tilting assembly; 4021. First cylinder; 4022. Drive shaft; 4023. Driven shaft; 4024. Tilting block; 40241. Guide groove; 403. Clamping feeding assembly; 4031. Wall panel; 4032. Crossbeam; 4033. Panel; 4034. First belt feeding assembly; 4035. Baffle; 4036. Pressure plate; 4037. Synchronous belt drive assembly; 404. Auxiliary bearing; 50. First drive component; 51. Second drive component.

[0018] The following detailed description, in conjunction with the accompanying drawings, will further illustrate the present invention. Detailed Implementation

[0019] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of the invention are illustrated in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

[0020] Please see Figures 1 to 4 An embodiment of the present invention provides a large-format, high-speed bottom-flush paper folding machine, including a folding system 100 that directly connects to the original paper roll, and a stacking system 200 disposed inside the folding system 100. The bottom of the stacking system 200 is provided with a storage system 300, and the bottom end of the storage system 300 is provided with a material conveying system 400. The storage system 300 includes a support frame 30, a transmission chain group 31 symmetrically arranged on the left and right sides of the support frame 30, a drive system connected to the transmission chain group 31, and multiple paper storage racks 32 for placing paper stacks. The transmission chain assembly 31 includes multiple transmission sprockets 311 installed in the support frame 30, and transmission chains 312 connecting the multiple transmission sprockets 311. Each paper storage rack 32 has its two ends connected to the transmission chains 312 on both sides, and moves in a circular motion with the transmission chains 312. When an empty paper storage rack 32 moves upward from the bottom of the stacking system 200, the folded paper stack is taken out from the stacking system 200. The material distribution and conveying system 400 includes at least two sets of flipping feeding components 40. Each set of flipping feeding components 40 is used to take the paper stack out of the paper storage rack 32, rotate it 90° and lay it down, and then transport it to the corresponding cutting machine through the conveyor line.

[0021] It should be noted that in this application, because the number of paper sheets drawn from the bottom is relatively large, the stack height of the paper stack is relatively high. To prevent the paper stack from tipping over during transportation, it needs to be laid down during transport. Since the width of the folding system 100 is the same as the width of the original paper roll, the original paper roll can be directly connected to the folding system 100, thereby eliminating the slitting process and improving production efficiency.

[0022] Furthermore, when the folding system 100 or the stacking system 200 malfunctions, since the storage system 300 contains paper stacks, there is no need to stop the machine. The material distribution and conveying system 400 continues to distribute the material, thereby improving production efficiency. When the material distribution and conveying system 400 malfunctions, since the storage system 300 contains empty paper storage racks 32, it can continue to store paper stacks, so there is no need to stop the machine. The folding system 100 and the stacking system 200 continue to operate, and the empty paper storage racks 32 in the storage system 300 continue to remove paper stacks from the stacking system 200, thereby improving production efficiency.

[0023] Specifically, during the production process, the transmission chain assembly 31 drives the paper storage rack 32 containing paper stacks from the top of the storage system 300 into the material distribution and conveying system 400; after the flipping feeding assembly 40 detects the paper stacks, it removes the paper stacks from the paper storage rack 32, rotates them 90° and lays them down, and then transports them to the corresponding cutting machine via the conveyor line; the transmission chain assembly 31 drives the empty paper storage rack 32 from the bottom of the storage system 300 back to the bottom of the stacking system 200; when the empty paper storage rack 32 moves upward from the bottom of the stacking system 200, it removes the folded paper stacks from the stacking system 200; this process is repeated sequentially.

[0024] Please see Figures 1 to 4 In a preferred embodiment of this application, the paper storage rack 32 includes a crossbar 321 and a plurality of support frames 322 mounted on the crossbar 321; Each of the support frames 322 has an upward-facing U-shaped notch on its side, and the paper stack is located in the U-shaped notch; The end of the crossbar 321 is provided with a connecting plate 323, and the outer surface of the connecting plate 323 is provided with a connecting post 324 that is connected to the transmission chain 312.

[0025] It should be noted that, in order to facilitate the entry of the paper stack into the U-shaped bayonet, the opening end of the U-shaped bayonet is V-shaped outwards. To prevent the crossbar 321 from rotating, the crossbar 321 is a square bar structure, and the support frame 322 is installed on the crossbar 321 through an inverted U-shaped structure.

[0026] Please see Figure 3 , Figure 5 and Figure 6 In a preferred embodiment of this application, two drive sprockets 311 located at the bottom of the stacking system 200 and on the same side are on the same vertical line, which can cause the drive chain 312 to drive the paper storage rack 32 to rise in a straight line. The stacking system 200 is provided with multiple stacking supports, and the folded paper stacks are located in the stacking supports. The support frame 322 on each crossbar 321 is staggered with the stacking support to avoid interference.

[0027] Specifically, when the paper storage rack 32 moves upward with the transmission chain 312, the support frame 322 is engaged from the gap of the stacking bracket, so that the paper stack enters the support frame 322, and then drives the paper stack to move upward until the paper stack is removed from the stacking bracket, and then moves horizontally with the transmission chain 312.

[0028] Please see Figure 3 , Figure 5 and Figure 6 In a preferred embodiment of this application, the support frame 30 is provided with an upper guide rail 33, a vertical guide rail 34 and a lower guide rail 35, and the side of the vertical guide rail 34 is provided with a lower outlet 341 and an upper outlet 342. An upper roller 3231 and a lower roller 3232 are installed on the same side of the connecting plate 323, and the upper roller 3231 and the U-shaped bayonet are respectively located on both sides of the crossbar 321; During the process of the support frame 322 removing the paper stack from the stacking system, the lower roller 3232 enters from the right side of the lower guide rail 35, passes sequentially through the lower guide rail 35 and the vertical guide rail 34, and exits from the upper exit 342. The upper roller 3231 enters the vertical guide rail 34 from the lower exit 341, passes sequentially through the vertical guide rail 34 and the upper guide rail 33, and exits from the right side of the upper guide rail 33.

[0029] In this embodiment, the upper roller 3231 and the lower roller 3232 roll on the upper guide rail 33, the vertical guide rail 34 and the lower guide rail 35 to guide the paper picking process of the paper storage rack 32 and avoid interference with other components.

[0030] Please see Figure 5 and Figure 6 In a preferred embodiment of this application, the bottom of the upper guide rail 33 and the top of the lower guide rail 35 are respectively provided with auxiliary guide rails 36, and the corresponding transmission chain 312 is located in the auxiliary guide rail 36 to guide the paper picking process of the paper storage rack 32 and avoid interference with other components.

[0031] Please see Figure 1 , Figure 3 , Figures 7 to 9 In a preferred embodiment of this application, the flipping feeding assembly 40 includes a base frame 401 mounted on the support frame 30, a flipping assembly 402 disposed on the base frame 401, and a clamping feeding assembly 403 disposed on the flipping assembly 402. The base frame 401 is equipped with a sensor. When the sensor detects a support frame 322 containing a stack of paper, the flipping component 402 drives the clamping and feeding component 403 to flip from a horizontal state to a vertical state. The clamping and feeding component 403 clamps the stack of paper. After the support frame 322 descends, the flipping component 402 drives the clamping and feeding component 403 to flip from a vertical state to a horizontal state.

[0032] It should be noted that in this application, because the number of paper sheets in the bottom drawer is relatively large, the stack height of the paper stack is relatively high. To prevent the paper stack from tipping over during transportation, it needs to be laid down during transport. Furthermore, to prevent the paper in the paper stack from scattering during the flipping process, the clamping and feeding assembly 403 is used to clamp the paper stack.

[0033] Please see Figures 7 to 9 In a preferred embodiment of this application, the flipping assembly 402 includes a first cylinder 4021, a drive shaft 4022 and a driven shaft 4023 disposed on the base frame 401, wherein the first cylinder 4021 is rotatably mounted on the base frame 401. The end of the drive shaft 4022 is rotatably provided with a flipping block 4024. The flipping block 4024 extends downward toward the driven shaft 4023 and is rotatably connected to the actuating end of the first cylinder 4021. The end of the flipping block 4024 toward the first cylinder 4021 is provided with a guide groove 40241. One side of the clamping and feeding assembly 403 is mounted on the driven shaft 4023, and the other side is connected to the guide bar groove 40241 through the auxiliary bearing 404.

[0034] Specifically, when the gripping and feeding assembly 403 is in a horizontal state, the actuating end of the first cylinder 4021 is in an extended state, and the auxiliary bearing 404 is located at the bottom of the guide groove 40241. When material needs to be picked up, the actuating end of the first cylinder 4021 retracts to drive the tilting block 4024 to rotate around the drive shaft 4022, and the auxiliary bearing 404 slides upward along the guide groove 40241 to drive the gripping and feeding assembly 403 to rotate around the driven shaft 4023 until the gripping and feeding assembly 403 is in a vertical state. After the paper stack is removed, the actuator end of the first cylinder 4021 extends to drive the flipping block 4024 to rotate in the opposite direction around the drive shaft 4022. The auxiliary bearing 404 slides down along the guide groove 40241 to drive the gripping and feeding assembly 403 to rotate in the opposite direction around the driven shaft 4023 until the gripping and feeding assembly 403 is in a horizontal state.

[0035] Please see Figures 7 to 9 In a preferred embodiment of this application, the clamping and feeding assembly 403 includes a wall panel 4031, a crossbeam 4032 connecting two wall panels 4031, a panel 4033 installed between the two crossbeams 4032, and a first belt feeding assembly 4034 embedded in the panel 4033. A plurality of baffles 4035 are installed on one side of the panel 4033, and the baffles 4035 are misaligned with the U-shaped slots on the support frame 322. A pressure plate 4036 is movably mounted on the other side of the panel 4033, and the pressure plate 4036 is connected to a synchronous belt drive assembly 4037 mounted on the bottom of the panel 4035. One end of the wall panel 4031 near the baffle 4035 is connected to the driven shaft 4023, and the other end is connected to the auxiliary bearing 404.

[0036] Specifically, when no material is being picked up, the clamping and feeding assembly 403 is in a horizontal state, and the pressure plate 4036 is located at the edge of the first belt feeding assembly 4034. When material picking is required, the actuating end of the first cylinder 4021 retracts, driving the clamping and feeding assembly 403 to rotate to a vertical state via the flipping block 4024. When the paper stack descends to the position of the clamping and feeding assembly 403, the baffle 4035 engages with the gap between the adjacent support frame 322, causing the paper stack to contact the bottom of the baffle 4035; the transmission chain 312 drives the paper storage rack 32 to continue moving downwards, causing the baffle 4035 to catch the paper stack. The synchronous belt drive assembly 4037 is triggered to move the pressure plate 4036 toward the baffle 4035 to clamp the paper stack; when the top of the paper storage rack 32 leaves the bottom of the baffle 4035, the actuating end of the first cylinder 4021 extends, and drives the clamping and feeding assembly 403 to rotate to a horizontal state through the flipping block 4024; the first belt feeding assembly 4034 transports the paper stack to the end of the conveyor line, and then the conveyor line transports the paper stack to the corresponding cutting machine.

[0037] Please see Figure 1 , Figure 3 and Figure 10 In a preferred embodiment of this application, the storage system 300 is provided with a waste conveying assembly 37, which includes a support beam 371 installed on the support frame 30 and a second belt conveying assembly 272 provided on the support beam 371. The second belt feeding assembly 372 has a first baffle plate 373 on one side and a second baffle plate 374 on the other side; An auxiliary beam 375 is rotatably mounted on one end of the support beam 371 near the second belt feeding assembly 372. The auxiliary beam 375 is provided with a plurality of auxiliary L plates 376. The auxiliary L plates 376 are misaligned with the U-shaped slots on the support frame 322 to avoid interference during the paper stacking process. A second cylinder 377 is rotatably mounted on one end of the support beam 371 near the support frame 30. The actuating end of the second cylinder 377 is rotatably connected to the connecting block 378 mounted on the auxiliary beam 375.

[0038] It should be noted that in this application, the first folded stack of paper is usually quite messy and needs to be removed, so the waste conveying assembly 37 is used to remove it. Before the first paper stack approaches the waste conveying assembly 37, the actuating end of the second cylinder 377 is in an extended state. The actuating end of the second cylinder 377 retracts to rotate the auxiliary beam 375 and the auxiliary L-plate 376, causing the auxiliary L-plate 376 to be in a horizontal state. When the first paper stack descends to the position of the waste conveying assembly 37, the auxiliary L-plate 376 engages with the gap between the adjacent support frame 322, causing the paper stack to contact the bottom of the auxiliary L-plate 376. The transmission chain 312 drives the paper storage rack 32 to continue moving downwards, causing the auxiliary L-plate 376 to catch the paper stack. When the top of the paper storage rack 32 leaves the bottom of the auxiliary L-plate 376, the second cylinder 377 drives the auxiliary beam 375 and the auxiliary L-plate 376 to rotate in the opposite direction, causing the auxiliary L-plate 376 to be in an inclined state, pushing the paper stack onto the second belt feed assembly 372. The second belt feed assembly 372 removes the paper stack from the storage system 300.

[0039] Please see Figure 1 , Figure 3 and Figure 11 In a preferred embodiment of this application, the storage system 300 is provided with a lifting storage component 38. The lifting storage component 38 includes a top sprocket 381 installed on the top of the support frame 30, a bottom sprocket 382 installed at the bottom, a lifting chain 383 connecting the top sprocket 381 and the bottom sprocket 382, ​​and a lifting plate 384. One end of the lifting chain 383 passes around the top sprocket 381 and connects to the top of the lifting plate 384, and the other end passes around the bottom sprocket 382 and connects to the bottom of the lifting plate 384. The two lifting plates 384 are connected by a lifting beam 385. The top of the lifting plate 384 is provided with a row of drive sprockets 311 and the bottom is provided with a row of drive sprockets 311. The paper storage rack 32 containing paper stacks passes through the top drive sprockets 311, and the empty paper storage rack 32 passes through the bottom drive sprockets 311. The drive system includes a first drive component 50 and a second drive component 51. The first drive component 50 is located between the lifting and storing component 38 and the stacking system 200 and is connected to one of the drive sprockets 311. The second drive component 51 is located at the end of the material distribution and conveying system 400 and is connected to one of the drive sprockets 311.

[0040] It should be noted that, in order to increase the storage function, this application provides a lifting storage component 38. The storage rack 32 containing paper stacks is stored between the top of the lifting storage component 38 and the top of the support frame 30, and the storage rack 32 containing empty paper stacks is stored between the bottom of the lifting storage component 38 and the bottom of the support frame 30.

[0041] Specifically, when the driving speed of the first driving component 50 is greater than the driving speed of the second driving component 51, the lifting and storage component 38 descends, and the number of paper storage racks 32 containing paper stacks between the top of the lifting and storage component 38 and the top of the support frame 30 increases; conversely, when the lifting and storage component 38 ascends, the number of empty paper storage racks 32 between the bottom of the lifting and storage component 38 and the bottom of the support frame 30 increases.

[0042] In other embodiments, this application may also use only one drive component to drive the entire transmission chain group 31, in which case the lifting and storage component 38 cannot be lifted or lowered.

[0043] It should be further noted that in this application, the width of the folding system 100 is the same as the width of the original paper roll, such as 5600mm or 3600mm. In other embodiments, the width of the folding system 100 is not limited to this and can be set according to actual needs.

[0044] In summary, in this invention, the width of the folding system 100 is the same as the width of the original paper roll, and the original paper roll is directly connected to the folding system to eliminate the slitting process; at least two or more cutting machines can be equipped at the same time through the storage system 300 and the material distribution and conveying system 400, and when one of the folding system 100, the stacking system 200 or the material distribution and conveying system 400 fails, there is no need to stop the machine, thereby improving production efficiency.

[0045] In this specification, the various embodiments are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. Furthermore, the above-described embodiments merely illustrate several implementation methods of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A wide-format, high-speed bottom-folding paper towel folding machine, characterized in that: It includes a folding system that directly feeds into the paper roll, and a stacking system located inside the folding system. The bottom of the stacking system is equipped with a storage system, and the bottom of the storage system is equipped with a material conveying system. The storage system includes a support frame, a transmission chain assembly symmetrically arranged on the left and right sides of the support frame, a drive system connected to the transmission chain assembly, and multiple paper storage racks for placing paper stacks. The transmission chain assembly includes multiple transmission sprockets installed in the support frame, and transmission chains connecting the multiple transmission sprockets. Each paper storage rack has its two ends connected to the transmission chains on both sides, and moves in a circular motion with the transmission chains. When an empty paper storage rack moves upward from the bottom of the stacking system, the folded paper stack is taken out from the stacking system. The paper storage rack includes a crossbar and a plurality of support frames mounted on the crossbar; Each of the support frames has an upward-facing U-shaped notch on its side, and the paper stack is located in the U-shaped notch; The end of the crossbar is provided with a connecting plate, and the outer surface of the connecting plate is provided with a connecting post that is connected to the transmission chain; The material distribution and conveying system includes at least two sets of flipping feeding components. Each set of flipping feeding components is used to remove the paper stack from the paper storage rack, rotate it 90° and lay it down, and then transport it to the corresponding cutting machine through the conveyor line. The flipping feeding assembly includes a base frame mounted on the support frame, a flipping component disposed on the base frame, and a clamping feeding component disposed on the flipping component; The base frame is equipped with a sensor. When the sensor detects a support frame containing a stack of paper, the flipping component drives the clamping and feeding component to flip from a horizontal state to a vertical state. The clamping and feeding component clamps the stack of paper. After the support frame descends, the flipping component drives the clamping and feeding component to flip from a vertical state to a horizontal state. The tilting assembly includes a first cylinder, a drive shaft, and a driven shaft mounted on the base frame, wherein the first cylinder is rotatably mounted on the base frame; The end of the drive shaft is rotatably provided with a flipping block, the flipping block extends downward toward the driven shaft and is rotatably connected to the actuating end of the first cylinder, and the end of the flipping block toward the first cylinder is provided with a guide groove. One side of the clamping and feeding assembly is mounted on the driven shaft, and the other side is connected to the guide bar groove via an auxiliary bearing.

2. The high-speed, wide-format bottom-folding paper folding machine according to claim 1, characterized in that, The two drive sprockets located at the bottom of the stacking system and on the same side are on the same vertical line; The stacking system is provided with multiple stacking supports, and the folded paper stacks are located in the stacking supports. The support frame on each crossbar is staggered with the stacking support.

3. The high-speed, wide-format bottom-folding paper folding machine according to claim 2, characterized in that, The support frame is provided with an upper guide rail, a vertical guide rail and a lower guide rail, and the side of the vertical guide rail is provided with a lower outlet and an upper outlet; An upper roller and a lower roller are installed on the same side of the connecting plate, and the upper roller and the U-shaped bayonet are respectively located on both sides of the crossbar; During the process of the support frame removing the paper stack from the stacking system, the lower roller enters from the right side of the lower guide rail, passes sequentially through the lower guide rail and the vertical guide rail, and exits from the upper exit. The upper roller enters the vertical guide rail from the lower exit, passes sequentially through the vertical guide rail and the upper guide rail, and exits from the right side of the upper guide rail.

4. The high-speed, wide-format bottom-folding paper folding machine according to claim 3, characterized in that, The bottom of the upper guide rail and the top of the lower guide rail are respectively provided with auxiliary guide rails, and the corresponding transmission chains are located in the auxiliary guide rails.

5. The high-speed, wide-format bottom-folding paper folding machine according to claim 1, characterized in that, The clamping and feeding assembly includes a wall panel, a crossbeam connecting two of the wall panels, a panel installed between the two crossbeams, and a first belt feeding assembly embedded in the panel. Multiple baffles are installed on one side of the panel, and the baffles are offset from the U-shaped slots on the support frame. A pressure plate is movably mounted on the other side of the panel, and the pressure plate is connected to a synchronous belt drive assembly mounted at the bottom of the panel; One end of the wall panel near the baffle is connected to the driven shaft, and the other end is connected to the auxiliary bearing.

6. The high-speed, wide-format bottom-folding paper folding machine according to claim 1, characterized in that, The storage system is equipped with a waste conveying assembly, which includes a support beam installed on the support frame and a second belt conveyor assembly installed on the support beam. The second belt feeding assembly has a first baffle plate on one side and a second baffle plate on the other side; An auxiliary beam is rotatably mounted on one end of the support beam near the second belt feeding assembly. The auxiliary beam is provided with multiple auxiliary L-plates, and the auxiliary L-plates are misaligned with the U-shaped slots on the support frame. A second cylinder is rotatably mounted on one end of the support beam near the support frame, and the actuating end of the second cylinder is rotatably connected to a connecting block mounted on the auxiliary beam.

7. The large-format, high-speed bottom-folding paper folding machine according to any one of claims 1 to 6, characterized in that, The storage system is equipped with a lifting storage component, which includes a top sprocket installed on the top of the support frame, a bottom sprocket installed at the bottom, a lifting chain connecting the top sprocket and the bottom sprocket, and a lifting plate. One end of the lifting chain passes around the top sprocket and connects to the top of the lifting plate, while the other end passes around the bottom sprocket and connects to the bottom of the lifting plate. The two lifting plates are connected by a lifting beam. The top of the lifting plate is provided with a row of drive sprockets and the bottom is provided with a row of drive sprockets. The paper storage rack containing paper stacks passes through the top drive sprockets, and the empty paper storage rack passes through the bottom drive sprockets. The drive system includes a first drive component and a second drive component. The first drive component is located between the lifting and storing component and the stacking system and is connected to one of the drive sprockets. The second drive component is located at the end of the material distributing and conveying system and is connected to one of the drive sprockets. When the driving speed of the first driving component is greater than the driving speed of the second driving component, the lifting and storage component descends; conversely, when the driving speed of the second driving component is less than the driving speed of the third driving component, the lifting and storage component ascends.

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