A double-creping device and creping method for sanitary paper production

Abstract

The application relates to the technical field of toilet paper production, and discloses a double-creping device for toilet paper production and a creping method, wherein the double-creping device for toilet paper production comprises a processing frame, a drying cylinder group, an air inlet heating pipe group, an air outlet heating pipe group, a feeding roller, a conveying power mechanism and a winding mechanism; the drying cylinder group is provided with two drying cylinders which are arranged in the processing frame in a penetrating mode and used for drying the front and back surfaces of the toilet paper; the air inlet heating pipe group is arranged on the processing frame and is in sealing and rotating communication with one end of the two drying cylinders; and the air outlet heating pipe group is arranged on the processing frame and is in sealing and rotating communication with the other end of the two drying cylinders. Through the technical scheme, the double-creping device for toilet paper production in the prior art can solve the problem that the surface creping uniformity of the toilet paper is poor during the production of the toilet paper.

Description

Technical Field

[0001] This invention relates to the field of toilet paper production technology, specifically to a double creping device and creping method for toilet paper production. Background Technology

[0002] Toilet paper, also known as crepe paper, is a common item in people's daily lives. Toilet paper is called crepe paper because its surface is double-creased during the processing by the combined action of the creping knife and the speed difference between the drying cylinder and the winding section.

[0003] However, in the actual toilet paper production process, although the size of the wrinkles on the toilet paper can be adjusted by regulating the speed difference between the drying cylinder and the winding section, during the winding process, since the drying and winding sections in existing technologies are mostly driven synchronously, as the diameter of the toilet paper roll increases, the rotation speed of the roll surface will also increase. This causes the wrinkles on the toilet paper to vary from the beginning to the end of the winding process. In addition, most of the drying cylinders in existing technologies are heated by steam from one side to the other. The interior of the drying cylinder is mostly hollow, and the steam flow rate through the drying cylinder is fast, resulting in poor uniformity of steam contact with the surface of the drying cylinder and low heat transfer efficiency. The uneven surface heat of the drying cylinder can also easily cause poor drying of the paper surface, thus easily causing poor wrinkle uniformity during the toilet paper winding process. Summary of the Invention

[0004] This invention proposes a double creping device and creping method for toilet paper production, in order to solve the problem mentioned in the background art, that the existing double creping devices for toilet paper production are prone to causing poor uniformity of creases on the surface of toilet paper during the toilet paper production process.

[0005] The technical solution of the present invention is as follows: A double creping device for toilet paper production, comprising a processing frame, a drying cylinder assembly, an inlet heating tube assembly, an outlet heating tube assembly, a feeding roller, a conveying power mechanism, and a winding mechanism;

[0006] The drying cylinder assembly is provided in two parts and is installed through the processing frame for drying the front and back sides of the toilet paper.

[0007] The air intake heating tube assembly is mounted on the processing frame, and the air intake heating tube assembly is sealed and rotatably connected to one end of the two drying cylinder assemblies.

[0008] The exhaust heating tube assembly is mounted on the processing frame, and the exhaust heating tube assembly is sealed and rotatably connected to the other end of the two drying cylinder assemblies.

[0009] The feeding roller is mounted through and rotatably on the processing frame, and the feeding roller and the two drying cylinder groups are arranged in a V-shape.

[0010] The conveying power mechanism is located between the two drying cylinder groups and the feeding roller, and is used to drive the surfaces of the drying cylinder groups and the feeding roller to rotate at the same speed.

[0011] The winding mechanism is mounted on the processing frame and is located at the end of the drying cylinder group away from the feeding roller. The winding mechanism is connected to one end of one of the drying cylinder groups and is used to wrinkle and wind up the toilet paper.

[0012] Based on the aforementioned scheme, the processing rack is also equipped with a creping knife group with dust collection function. The creping knife group is located on one side of the drying cylinder group near the winding mechanism. It is used to scrape off the paper adhering to the drying cylinder group and to crease the surface of the paper.

[0013] As a preferred technical solution of this application, the drying cylinder assembly includes a drying cylinder and a drying tube;

[0014] Both sides of the drying cylinder are sealed and a drying tray is rotatably mounted thereon;

[0015] The drying tube is provided in two parts, each corresponding to a drying tray. The drying tube is set on the drying tray and connected to the drying cylinder. The drying tube also passes through the processing rack.

[0016] An air inlet power pipe is provided through and sealed in one of the drying pipes, and an air outlet power sleeve is provided through and sealed in the other drying pipe, with the air inlet power pipe sleeved inside the air outlet power sleeve.

[0017] The intake power pipe is connected to multiple intake short pipes, the intake short pipes penetrate the exhaust power sleeve, and multiple intake through holes are opened on the intake short pipes;

[0018] The exhaust power sleeve is connected to multiple exhaust short pipes, and the exhaust short pipes are provided with multiple exhaust through holes. Both the exhaust short pipes and the inlet short pipes are connected to the inner wall of the drying cylinder.

[0019] Based on the aforementioned scheme, the intake heating pipe assembly and the exhaust heating pipe assembly have the same structure. The intake heating pipe assembly is sealed and rotatably connected to one end of the two intake power pipes, and the exhaust heating pipe assembly is sealed and rotatably connected to one end of the two exhaust power sleeves.

[0020] Both the air inlet heating pipe assembly and the air outlet heating pipe assembly include an air inlet cylinder and a three-way air delivery pipe;

[0021] The air inlet cylinder is provided in two parts, and the air inlet cylinder corresponds one to one with the air inlet power pipe or the air outlet power sleeve. The air inlet cylinder is detachably mounted on the processing frame. One end of the air inlet power pipe or the air outlet power sleeve is sealed and rotatably connected to the air inlet cylinder.

[0022] The three-way air supply pipe connects the two air inlets.

[0023] As a preferred technical solution of this application, the conveying power mechanism includes a conveying motor, a transmission part one, and a transmission part two;

[0024] The conveyor motor is installed on one side of the processing frame, and the output end of the conveyor motor is connected to one end of the feeding roller;

[0025] The transmission unit is disposed between the feeding roller and the adjacent air outlet power sleeve;

[0026] The second transmission unit is disposed between the two intake power pipes;

[0027] The transmission part one and the transmission part two have the same structure, and both the transmission part one and the transmission part two include a bevel gear one, a transmission rod and a bevel gear two;

[0028] Two bevel gears are provided, and the two bevel gears are respectively disposed between the feeding roller and the outlet power sleeve or the two inlet power pipes;

[0029] The transmission rod is rotatably mounted on the processing frame;

[0030] There are two bevel gears, which are mounted on the transmission rod. The bevel gears correspond one-to-one with the first bevel gear and mesh with the first bevel gear.

[0031] As a preferred technical solution of this application, the winding mechanism includes a winding speed regulating roller, a first conveyor pulley, a second conveyor pulley, a winding frame, and a winding assembly with a rapid feeding function;

[0032] The winding speed control roller is rotatably mounted on the processing frame;

[0033] The conveyor pulley is located on one side of the winding speed regulating roller;

[0034] The second conveyor pulley is mounted on the outlet power sleeve adjacent to the winding speed regulating roller, and a transmission belt is provided between the second conveyor pulley and the first conveyor pulley for transmission.

[0035] The take-up frame is mounted on the processing frame;

[0036] The take-up assembly is disposed on the take-up holder, and the take-up assembly is also slidably disposed on the processing rack.

[0037] Furthermore, based on the aforementioned scheme, the winding assembly includes a winding electric cylinder, a winding pressure sensor, a winding adjustment frame, a material take-up electric cylinder, and a drum positioning part;

[0038] The electric winding cylinder is mounted on the winding frame;

[0039] The winding pressure sensor is installed at the output end of the winding electric cylinder;

[0040] The winding adjustment frame is mounted on the detection end of the winding pressure sensor;

[0041] The material taking electric cylinder is provided in two parts. The material taking electric cylinder is installed on the winding and adjusting frame. The two material taking electric cylinders are arranged symmetrically. The output ends of the two material taking electric cylinders contact each other to form a winding support rod.

[0042] There are two roll positioning parts, which are set on the take-up and adjustment frame. The two sets of roll positioning parts are symmetrically arranged. Each roll positioning part corresponds to a material taking electric cylinder and is used to position the roll of toilet paper being taken up.

[0043] Furthermore, based on the aforementioned solution, the drum positioning part includes a telescopic drum and a positioning ring with specific limiting functions;

[0044] One end of the telescopic cylinder is mounted on the winding and adjusting frame, and a positioning plate is mounted on the other end of the telescopic cylinder;

[0045] The positioning ring is rotatably positioned on the side of the positioning plate away from the telescopic cylinder.

[0046] Furthermore, based on the aforementioned solution, the wrinkling knife assembly includes a knife holder, a dust collection box, a dust collection drawer, and a dust guide plate;

[0047] The tool holder is mounted on the processing frame, and a wrinkling blade is detachably mounted on the tool holder;

[0048] The dust collection box is mounted on the processing rack, and the tool holder is located inside the dust collection box;

[0049] The dust collection drawer is detachably and slidably installed inside the dust collection box;

[0050] Two dust guide plates are provided, which are disposed inside the dust collection box and located between the dust collection box and the dust collection drawer. The two dust guide plates are arranged symmetrically.

[0051] A double creping method for toilet paper production, using the aforementioned double creping device for toilet paper production, includes the following steps:

[0052] Step 1: Preheating. Connect one end of the three-way air supply pipe in the air inlet heating pipe group and the air outlet heating pipe group to the steam generator. Adjust the steam temperature through the steam generator so that the heating steam flows along the air inlet power pipe, air inlet short pipe and air inlet through hole and fills the entire drying cylinder. The steam that enters the drying cylinder then flows back to the steam generator along the air outlet through hole, air outlet short pipe and air outlet power sleeve, thus completing the preheating operation of the drying cylinder.

[0053] Step 2: Paper conveying and drying. When conveying and drying the dehydrated paper, start the conveyor motor. The output end of the conveyor motor drives the feeding roller to rotate. The feeding roller drives the connected bevel gear one to rotate. The rotation of bevel gear one drives the meshing bevel gear two to rotate. Through the cooperation of bevel gear two and the transmission rod, the air inlet power pipe, the air outlet power sleeve, the air inlet short pipe and the air outlet short pipe, as well as the drying cylinder, are driven to rotate. This makes the feeding roller and the two drying cylinders rotate synchronously. With the cooperation of transmission part one and transmission part two, the feeding roller and the adjacent drying cylinder rotate in opposite directions. The two drying cylinders rotate in opposite directions, so that one end of the dehydrated toilet paper moves towards the winding mechanism along the upper part of the feeding roller, the lower part of the drying cylinder adjacent to the feeding roller, and the upper part of the drying cylinder away from the feeding roller. The heated drying cylinder dries both sides of the toilet paper.

[0054] Step 3: Paper wrinkling. After the toilet paper is dried by the rotation of the drying drum, the paper passes through the wrinkling blades. The wrinkling blades scrape off the toilet paper stuck to the drying drum. During the scraping process, the wrinkling blades can cut the fibers in the toilet paper, causing the surface of the paper to wrinkle.

[0055] Step 4: Roll positioning. Select a suitable paper roll according to the width of the paper to be produced. Place the two sides of the paper roll on one side of the output end of the two feeding electric cylinders. Start the feeding electric cylinders so that the output ends of the two feeding electric cylinders come into contact and support the paper roll. Then, by adjusting the length of the telescopic cylinder, make the positioning ring come into contact with one end of the paper roll to position the paper roll.

[0056] Step 5: Paper winding. After positioning the paper roll, wrap the creased end of the toilet paper onto the paper roll. Start the winding electric cylinder; its output drives the winding pressure sensor, which in turn moves the winding adjustment frame. This movement of the frame, in turn, moves the material-taking electric cylinder, which in turn moves the paper roll. This causes the toilet paper on the paper roll to contact the surface of the winding speed-regulating roller. As the drying drum rotates, the output of the conveyor motor, along with the conveyor pulleys and belt, drives the winding speed-regulating roller to rotate synchronously. The rotation of the roller causes the paper to be wound onto the paper roll at a uniform speed. As the thickness of the toilet paper on the paper roll increases, the pressure increases. The winding pressure sensor detects the pressure change, and the winding electric cylinder adjusts the distance between the paper roll and the winding speed-regulating roller.

[0057] The beneficial effects of this invention are as follows:

[0058] 1. In the preheating stage, through the cooperation between the inlet power pipe, the outlet power sleeve, the inlet short pipe and the outlet short pipe, while the inlet power pipe and the outlet power sleeve rotate to drive the drying cylinder to rotate, the drying steam entering the drying cylinder can be evenly distributed inside the drying cylinder, so that the drying cylinder can be preheated to the maximum extent to ensure the uniform drying of the paper surface.

[0059] 2. In the process of conveying toilet paper, when the feeding roller and the drying cylinder are driven to rotate by the conveying power mechanism, the transmission ratio of bevel gear one and bevel gear two is adjusted according to the different surface diameters of the feeding roller and the drying cylinder to ensure that the surface rotation speed of the feeding roller and the drying cylinder is the same. In the process of paper winding, the transmission ratio between conveyor belt pulley one and conveyor belt pulley two can be adjusted according to the required amount of wrinkles on the paper, so that the rotation speed of the surface of the winding speed regulating roller and the surface of the drying cylinder forms a speed difference, thereby causing wrinkles on the surface of the wound paper. In the process of winding toilet paper, the pressure between the toilet paper and the winding speed regulating roller can be detected by the winding pressure sensor. The winding pressure is adjusted by the winding electric cylinder, which not only ensures that the paper roll rotates stably on the winding support rod, but also squeezes the toilet paper during the winding process to ensure that the rolled toilet paper is compact.

[0060] 3. In this invention, when the dried toilet paper on the drying drum is scraped out and wrinkled by the wrinkling blade, the fibers that fall off the toilet paper will fall along the dust guide plate into the dust collection drawer during the process of breaking the surface fibers of the paper by the wrinkling blade. The dust collection drawer collects the fiber dust in a concentrated manner. Attached Figure Description

[0061] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0062] Figure 1 This is a partial cross-sectional structural schematic diagram of the present invention;

[0063] Figure 2 For the present invention Figure 1 A magnified schematic diagram of the partial structure at point A in the middle;

[0064] Figure 3 For the present invention Figure 1 A magnified schematic diagram of the local structure at point B;

[0065] Figure 4 This is a partial cross-sectional view of the drying cylinder assembly in this invention.

[0066] Figure 5 This is a schematic diagram of the structure of the feeding roller, drying rod assembly and conveying power mechanism in the present invention, in the state of conveying toilet paper.

[0067] Figure 6 This is a schematic diagram of the winding mechanism in this invention;

[0068] Figure 7 This is a schematic diagram of the overall structure of the present invention;

[0069] Figure 8 This is a schematic diagram of the overall structure of the present invention in the state of conveying toilet paper, from another perspective.

[0070] In the diagram: 001, Drying cylinder assembly; 002, Inlet heating tube assembly; 003, Outlet heating tube assembly; 004, Conveying power mechanism; 005, Winding mechanism; 006, Wrinkling knife assembly;

[0071] 1. Processing frame; 2. Feeding roller; 3. Drying tray; 4. Drying cylinder; 5. Drying tube; 6. Air inlet power pipe; 7. Air outlet power sleeve; 8. Short air inlet pipe; 9. Short air outlet pipe; 10. Air inlet cylinder; 11. Three-way air supply pipe; 12. Conveyor motor; 13. Bevel gear one; 14. Transmission rod; 15. Bevel gear two; 16. Winding speed regulating roller; 17. Conveyor pulley one; 18. Conveyor pulley two; 19. Conveyor belt; 20. Winding frame; 21. Winding electric cylinder; 22. Winding pressure sensor; 23. Winding adjustment frame; 24. Material picking electric cylinder; 25. Telescopic cylinder; 26. Positioning plate; 27. Positioning ring; 28. Tool holder; 29. ​​Dust collection box; 30. Dust collection drawer; 31. Dust guide plate. Detailed Implementation

[0072] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0073] Example 1, as Figures 1 to 8 As shown, this embodiment proposes a double creping device for toilet paper production, including a processing frame 1, a drying cylinder group 001, an air inlet heating tube group 002, an air outlet heating tube group 003, a feeding roller 2, a conveying power mechanism 004, and a winding mechanism 005.

[0074] like Figure 4 As shown above, there are two drying cylinder groups 001. The drying cylinder group 001 is installed through the processing frame 1 and is used to dry the front and back sides of the toilet paper. The drying cylinder group 001 includes a drying cylinder 4 and a drying tube 5. Both sides of the drying cylinder 4 are sealed and rotatably equipped with a drying tray 3. There are two drying tubes 5, and the drying tubes 5 correspond one-to-one with the drying trays 3. The drying tubes 5 are installed on the drying trays 3 and are connected to the drying cylinder 4. The drying tubes 5 are installed through the processing frame 1.

[0075] An air inlet power pipe 6 is installed through and sealed within one of the drying tubes 5, and an air outlet power sleeve 7 is installed through and sealed within the other drying tube 5. The air inlet power pipe 6 is fitted inside the air outlet power sleeve 7. Multiple air inlet short pipes 8 are connected to the air inlet power pipe 6. The air inlet short pipes 8 pass through the air outlet power sleeve 7 and have multiple air inlet holes. Multiple air outlet short pipes 9 are connected to the air outlet power sleeve 7 and have multiple air outlet holes. Both the air outlet short pipes 9 and the air inlet short pipes 8 are connected to the inner wall of the drying cylinder 4.

[0076] Specifically, when the inlet power pipe 6 or the outlet power sleeve 7 rotates, the combined action of multiple inlet short pipes 8 and outlet short pipes 9 not only drives the drying cylinder 4 to rotate, but the staggered arrangement of the inlet short pipes 8 and outlet short pipes 9 also effectively supports the inner wall of the drying cylinder 4 to prevent deformation of the drying cylinder 4.

[0077] like Figure 7 and Figure 8As shown above, the intake heating tube assembly 002 is mounted on the processing rack 1. The intake heating tube assembly 002 is sealed and rotatably connected to one end of the two drying cylinder assemblies 001. The exhaust heating tube assembly 003 is mounted on the processing rack 1. The exhaust heating tube assembly 003 is sealed and rotatably connected to the other end of the two drying cylinder assemblies 001. The intake heating tube assembly 002 and the exhaust heating tube assembly 003 have the same structure. The intake heating tube assembly 002 is sealed and rotatably connected to one end of the two intake power pipes 6. The exhaust heating tube assembly... 003 is sealed and rotatably connected to one end of the two exhaust power sleeves 7. Both the intake heating pipe group 002 and the exhaust heating pipe group 003 include an intake cylinder 10 and a three-way air supply pipe 11. There are two intake cylinders 10. The intake cylinder 10 corresponds one-to-one with the intake power pipe 6 or the exhaust power sleeve 7. The intake cylinder 10 is detachably mounted on the processing frame 1. One end of the intake power pipe 6 or the exhaust power sleeve 7 is sealed and rotatably connected to the intake cylinder 10. The three-way air supply pipe 11 connects the two intake cylinders 10.

[0078] Specifically, one end of the three-way air supply pipe 11 in the air inlet heating pipe group 002 and the air outlet heating pipe group 003 is connected to the steam generator. The steam temperature is adjusted by the steam generator so that the heating steam flows along the air inlet power pipe 6, the air inlet short pipe 8 and the air inlet through hole and fills the entire drying cylinder 4. The steam that enters the drying cylinder 4 then flows back to the steam generator along the air outlet through hole, the air outlet short pipe 9 and the air outlet power sleeve 7, thus completing the preheating operation of the drying cylinder 4.

[0079] Furthermore, through the cooperation between the inlet power pipe 6, the outlet power sleeve 7, the inlet short pipe 8, and the outlet short pipe 9, while the inlet power pipe 6 and the outlet power sleeve 7 rotate to drive the drying cylinder 4 to rotate, the drying steam entering the drying cylinder 4 can be evenly distributed inside the drying cylinder 4, which can enable the drying cylinder 4 to be preheated to the maximum extent to ensure the uniform drying of the paper surface.

[0080] like Figure 5 As shown above, the feeding roller 2 is rotatably mounted on the processing frame 1. The feeding roller 2 and the two drying cylinder groups 001 are arranged in a V-shape. The conveying power mechanism 004 is located between the two drying cylinder groups 001 and the feeding roller 2, and is used to drive the surfaces of the drying cylinder groups 001 and the feeding roller 2 to rotate at the same speed. The conveying power mechanism 004 includes a conveying motor 12, a transmission part one and a transmission part two. The conveying motor 12 is mounted on one side of the processing frame 1. The output end of the conveying motor 12 is connected to one end of the feeding roller 2. The transmission part one is located between the feeding roller 2 and the adjacent air outlet power sleeve 7. The transmission part two is located between the two air inlet power pipes 6.

[0081] The transmission part one and transmission part two have the same structure. Both transmission part one and transmission part two include a bevel gear one 13, a transmission rod 14 and a bevel gear two 15. There are two bevel gears one 13, which are respectively set between the feeding roller 2 and the air outlet power sleeve 7 or the two air inlet power pipes 6. The transmission rod 14 is rotatably set on the processing frame 1. There are two bevel gears two 15, which are set on the transmission rod 14. The bevel gears two 15 correspond one-to-one with the bevel gears one 13 and mesh with the bevel gears one 13.

[0082] Specifically, the output of the conveyor motor 12 drives the feeding roller 2 to rotate. The feeding roller 2 drives the connected bevel gear 13 to rotate. The rotation of bevel gear 13 drives the meshing bevel gear 15 to rotate. Through the cooperation of bevel gear 15 and transmission rod 14, the inlet power pipe 6, the outlet power sleeve 7, the inlet short pipe 8, the outlet short pipe 9, and the drying cylinder 4 are driven to rotate, so that the feeding roller 2 and the two drying cylinders 4 rotate synchronously. Under the cooperation of transmission part one and transmission part two, the feeding roller 2 and the adjacent drying cylinder 4 rotate in opposite directions, and the two drying cylinders 4 rotate in opposite directions. The rotation causes one end of the dehydrated toilet paper to move along the top of the feeding roller 2, below the drying cylinder 4 adjacent to the feeding roller 2, and towards the side of the drying cylinder 4 away from the feeding roller 2, towards the winding mechanism 005. The heated drying cylinder 4 dries both sides of the toilet paper. During the conveying of the toilet paper, when the feeding roller 2 and the drying cylinder 4 are driven to rotate by the conveying power mechanism 004, the transmission ratio of bevel gear 13 and bevel gear 215 is adjusted according to the different surface diameters of the feeding roller 2 and the drying cylinder 4 to ensure that the surface rotation speed of the feeding roller 2 and the drying cylinder 4 is the same.

[0083] like Figure 6 As shown above, the winding mechanism 005 is mounted on the processing frame 1. The winding mechanism 005 is located at the end of the drying cylinder group 001 away from the feeding roller 2. The winding mechanism 005 is connected to one end of one of the drying cylinder groups 001 and is used to crease and wind up the toilet paper. The winding mechanism 005 includes a winding speed regulating roller 16, a first conveyor pulley 17, a second conveyor pulley 18, a winding frame 20, and a winding assembly with a fast feeding function. The winding speed regulating roller 16 is rotatably mounted on the processing frame 1. The first conveyor pulley 17 is mounted on one side of the winding speed regulating roller 16. The second conveyor pulley 18 is mounted on the air outlet power sleeve 7 adjacent to the winding speed regulating roller 16. A transmission belt 19 is driven between the second conveyor pulley 18 and the first conveyor pulley 17. The winding frame 20 is mounted on the processing frame 1, and the winding assembly is mounted on the winding frame 20. The winding assembly is also slidably mounted on the processing frame 1.

[0084] The winding assembly includes a winding electric cylinder 21, a winding pressure sensor 22, a winding adjustment frame 23, a material take-up electric cylinder 24, and a drum positioning part. The winding electric cylinder 21 is mounted on the winding frame 20, the winding pressure sensor 22 is mounted on the output end of the winding electric cylinder 21, the winding adjustment frame 23 is located on the detection end of the winding pressure sensor 22, and there are two material take-up electric cylinders 24, which are mounted on the winding adjustment frame 23 and are symmetrically arranged. The output ends of the two material take-up electric cylinders 24 are... The contact forms a winding support rod. There are two roll positioning parts, which are set on the winding adjustment frame 23. The two sets of roll positioning parts are symmetrically arranged. The roll positioning parts correspond one-to-one with the material picking electric cylinder 24 and are used to position the roll of toilet paper. The roll positioning part includes a telescopic cylinder 25 with a specific limiting function and a positioning ring 27. One end of the telescopic cylinder 25 is set on the winding adjustment frame 23, and the other end of the telescopic cylinder 25 is set with a positioning plate 26. The positioning ring 27 is rotatably set on the side of the positioning plate 26 away from the telescopic cylinder 25.

[0085] Specifically, based on the width of the paper being produced, a suitable paper roll is selected. The two sides of the paper roll are placed on one side of the output end of the two picking electric cylinders 24. The picking electric cylinders 24 are activated so that the output ends of the two picking electric cylinders 24 come into contact and support the paper roll. Then, by adjusting the length of the telescopic cylinder 25, the positioning ring 27 comes into contact with one end of the paper roll to position the paper roll. The rapid retraction of the output ends of the two picking electric cylinders 24 facilitates the rapid loading and unloading of the paper roll.

[0086] After positioning the paper roll, the creased end of the toilet paper is wrapped around the paper roll. The winding electric cylinder 21 is activated, its output driving the winding pressure sensor 22. The sensor's detection end then moves the winding adjustment frame 23, which in turn moves the material-taking electric cylinder 24. The output of the material-taking electric cylinder 24 then moves the paper roll, causing the toilet paper wound on the paper roll surface to come into contact with the surface of the winding speed control roller 16. During the contact process, as the output of the conveyor motor 12 drives the drying cylinder 4 to rotate, the cooperation of the first conveyor pulley 17, the second conveyor pulley 18, and the conveyor belt 19 can drive the winding speed regulating roller 16 to rotate synchronously. The rotation of the winding speed regulating roller 16 drives the paper to be wound onto the paper roll at a uniform speed. As the thickness of the toilet paper on the paper roll increases, the pressure increases continuously. The winding pressure sensor 22 detects the pressure change, and the winding electric cylinder 21 adjusts the distance between the paper roll and the winding speed regulating roller 16.

[0087] During the paper winding process, the transmission ratio between conveyor belt pulley 17 and conveyor belt pulley 18 can be adjusted according to the required amount of wrinkles on the paper. This creates a speed difference between the surface of the winding speed control roller 16 and the surface of the drying cylinder 4, resulting in wrinkles on the surface of the wound paper. Furthermore, during the winding of toilet paper, the pressure between the toilet paper and the winding speed control roller 16 can be detected by the winding pressure sensor 22. The winding pressure can be adjusted by the winding electric cylinder 21, ensuring not only stable rotation of the paper roll on the winding support rod, but also compression of the toilet paper during the winding process, ensuring the compactness of the rolled toilet paper.

[0088] The aforementioned processing frame 1 is also equipped with a creping knife assembly 006 with a dust collection function. The creping knife assembly 006 is located on one side of the drying cylinder assembly 001 near the winding mechanism 005. It is used to scrape off the paper adhering to the drying cylinder assembly 001 and to crease the surface of the paper. The creping knife assembly 006 includes a knife holder 28, a dust collection box 29, a dust collection drawer 30, and a dust guide plate 31. The knife holder 28 is set on the processing frame 1 and the creping blade is detachably mounted on the knife holder 28. The dust collection box 29 is set on the processing frame 1 and the knife holder 28 is located inside the dust collection box 29. The dust collection drawer 30 is detachably slidably mounted inside the dust collection box 29. There are two dust guide plates 31. The dust guide plates 31 are set inside the dust collection box 29 and are located between the dust collection box 29 and the dust collection drawer 30. The two dust guide plates 31 are symmetrically arranged.

[0089] Specifically, after the toilet paper is dried by the rotation of the drying drum 4, the paper passes through the crease blade. The crease blade scrapes off the toilet paper stuck to the drying drum 4. During the scraping process, the crease blade can cut the fibers in the toilet paper, causing the surface of the paper to wrinkle. When the crease blade scrapes off the dried toilet paper from the drying drum 4, the fibers that fall off the toilet paper will fall along the dust guide plate 31 into the dust collection drawer 30, where the fiber dust is collected.

[0090] Example 2: Based on Example 1, Example 2 of this application proposes a double-creping method for toilet paper production:

[0091] Preheating is performed by connecting one end of the three-way air supply pipe 11 in the air inlet heating pipe group 002 and the air outlet heating pipe group 003 to the steam generator. The steam temperature is adjusted by the steam generator so that the heating steam flows along the air inlet power pipe 6, the air inlet short pipe 8 and the air inlet through hole and fills the entire drying cylinder 4. The steam entering the drying cylinder 4 then flows back to the steam generator along the air outlet through hole, the air outlet short pipe 9 and the air outlet power sleeve 7, thus completing the preheating operation of the drying cylinder 4.

[0092] In the paper conveying and drying process, when conveying and drying the dehydrated paper, the conveyor motor 12 is started. The output end of the conveyor motor 12 drives the feeding roller 2 to rotate. The feeding roller 2 drives the connected bevel gear 13 to rotate. The rotation of bevel gear 13 drives the meshing bevel gear 15 to rotate. Through the cooperation of bevel gear 15 and transmission rod 14, the air inlet power pipe 6, air outlet power sleeve 7, air inlet short pipe 8, air outlet short pipe 9, and drying cylinder 4 are driven to rotate, so that the feeding roller 2 and the two drying cylinders 4 rotate synchronously. With the cooperation of transmission part one and transmission part two, the feeding roller 2 and the adjacent drying cylinder 4 rotate in opposite directions, and the two drying cylinders 4 rotate in opposite directions. This causes one end of the dehydrated toilet paper to move towards the winding mechanism 005 along the upper part of the feeding roller 2, the lower part of the drying cylinder 4 adjacent to the feeding roller 2, and the upper part of the drying cylinder 4 away from the feeding roller 2. The heated drying cylinder 4 dries both sides of the toilet paper.

[0093] As the drying drum 4 rotates and dries the toilet paper, the paper passes through the crease blades. The crease blades remove the toilet paper stuck to the drying drum 4. During the removal process, the crease blades can cut the fibers in the toilet paper, causing the surface of the paper to wrinkle.

[0094] For roll positioning, select a suitable paper roll according to the width of the paper being produced, place both sides of the paper roll on one side of the output end of the two feeding electric cylinders 24, start the feeding electric cylinders 24 so that the output ends of the two feeding electric cylinders 24 come into contact and support the paper roll, and then adjust the length of the telescopic cylinder 25 so that the positioning ring 27 comes into contact with one end of the paper roll to position the paper roll.

[0095] After positioning the paper roll, the creased end of the toilet paper is wound around the paper roll. The winding electric cylinder 21 is activated, its output driving the winding pressure sensor 22. The sensor's detection end then moves the winding adjustment frame 23, which in turn moves the material-taking electric cylinder 24. The output of the material-taking electric cylinder 24 then moves the paper roll, ensuring the toilet paper wound on the surface of the paper roll is in contact with the surface of the winding speed control roller 16. In the face-to-face contact process, as the output end of the conveyor motor 12 drives the drying cylinder 4 to rotate, the cooperation of the first conveyor pulley 17, the second conveyor pulley 18 and the conveyor belt 19 can drive the winding speed regulating roller 16 to rotate synchronously. The rotation of the winding speed regulating roller 16 drives the paper to be wound onto the paper roll at a uniform speed. As the thickness of the toilet paper on the paper roll increases, the pressure increases continuously. The winding pressure sensor 22 detects the pressure change, and the winding electric cylinder 21 adjusts the distance between the paper roll and the winding speed regulating roller 16.

[0096] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A double creping device for toilet paper production, characterized in that, include: Processing rack (1); Drying cylinder assembly (001), two drying cylinder assemblies (001) are provided, and the drying cylinder assembly (001) is installed through the processing frame (1) for drying the front and back sides of toilet paper; An air intake heating tube assembly (002) is provided on the processing frame (1). The air intake heating tube assembly (002) is sealed and rotatably connected to one end of the two drying cylinder assemblies (001). An exhaust heating tube assembly (003) is provided on the processing frame (1). The exhaust heating tube assembly (003) is sealed to the other end of the two drying cylinder assemblies (001) and is rotatably connected. Feeding roller (2), the feeding roller (2) is rotatably mounted on the processing frame (1), and the feeding roller (2) and the two drying cylinder groups (001) are arranged in a V-shape; A conveying power mechanism (004) is provided between the two drying cylinder groups (001) and the feeding roller (2) to drive the surfaces of the drying cylinder group (001) and the feeding roller (2) to rotate at the same speed. A winding mechanism (005) is provided on the processing frame (1). The winding mechanism (005) is located at one end of the drying cylinder group (001) away from the feeding roller (2). The winding mechanism (005) is connected to one end of one of the drying cylinder groups (001) and is used to wrinkle and wind up the toilet paper. The drying cylinder assembly (001) includes: Drying cylinder (4), both sides of the drying cylinder (4) are sealed and a drying tray (3) is rotatably provided. Drying tube (5), there are two drying tubes (5), each corresponding to the drying tray (3), the drying tube (5) is set on the drying tray (3), the drying tube (5) is connected to the drying cylinder (4), and the drying tube (5) is installed through the processing rack (1); An air inlet power pipe (6) is provided through and sealed in one of the drying pipes (5), and an air outlet power sleeve (7) is provided through and sealed in the other drying pipe (5). The air inlet power pipe (6) is sleeved in the air outlet power sleeve (7). The intake power pipe (6) is connected to a plurality of intake short pipes (8), the intake short pipes (8) penetrate the exhaust power sleeve (7), and the intake short pipes (8) are provided with a plurality of intake through holes; The exhaust power sleeve (7) is connected to multiple exhaust short pipes (9), and multiple exhaust through holes are opened on the exhaust short pipes (9). Both the exhaust short pipes (9) and the inlet short pipes (8) are connected to the inner wall of the drying cylinder (4).

2. The double creping device for toilet paper production according to claim 1, characterized in that, The processing frame (1) is also equipped with a creping knife group (006) with dust collection function. The creping knife group (006) is located on one side of the drying cylinder group (001) near the winding mechanism (005). It is used to scrape off the paper stuck on the drying cylinder group (001) and to crease the surface of the paper.

3. The double creping device for toilet paper production according to claim 2, characterized in that, The intake heating tube assembly (002) and the exhaust heating tube assembly (003) have the same structure. The intake heating tube assembly (002) is sealed and rotatably connected to one end of the two intake power tubes (6). The exhaust heating tube assembly (003) is sealed and rotatably connected to one end of the two exhaust power sleeves (7). Both the intake heating tube assembly (002) and the outlet heating tube assembly (003) include: Two air inlets (10) are provided. The air inlets (10) correspond one-to-one with the air intake power pipe (6) or the air outlet power sleeve (7). The air inlets (10) are detachably mounted on the processing frame (1). One end of the air intake power pipe (6) or the air outlet power sleeve (7) is sealed and rotatably connected to the air inlets (10). A three-way gas supply pipe (11) is connected between the two air inlets (10).

4. The double creping device for toilet paper production according to claim 3, characterized in that, The power transmission mechanism (004) includes: A conveyor motor (12) is installed on one side of the processing frame (1), and the output end of the conveyor motor (12) is connected to one end of the feeding roller (2); Transmission unit 1, wherein the transmission unit 1 is disposed between the feeding roller (2) and the adjacent air outlet power sleeve (7); Transmission section two is disposed between the two intake power pipes (6); The transmission part one and the transmission part two have the same structure, and both the transmission part one and the transmission part two include: Two bevel gears (13) are provided, and the two bevel gears (13) are respectively arranged between the feeding roller (2) and the outlet power sleeve (7) or the two inlet power pipes (6); A transmission rod (14) is rotatably mounted on the processing frame (1); Two bevel gears (15) are provided. The two bevel gears (15) are set on the transmission rod (14). The two bevel gears (15) correspond one-to-one with the first bevel gear (13). The two bevel gears (15) mesh with the first bevel gear (13).

5. A double creping device for toilet paper production according to claim 4, characterized in that, The winding mechanism (005) includes: A take-up speed control roller (16) is rotatably mounted on the processing frame (1); Conveyor pulley one (17), the conveyor pulley one (17) is disposed on one side of the winding speed regulating roller (16); Conveyor pulley two (18) is mounted on the air outlet power sleeve (7) adjacent to the winding speed regulating roller (16), and a transmission belt (19) is provided between the conveyor pulley two (18) and the conveyor pulley one (17). A take-up rack (20) is disposed on the processing rack (1); A winding assembly with a fast feeding function is provided on the winding frame (20) and is also slidably provided on the processing frame (1).

6. A double creping device for toilet paper production according to claim 5, characterized in that, The winding assembly includes: A take-up electric cylinder (21) is mounted on the take-up frame (20); A winding pressure sensor (22) is installed on the output end of the winding electric cylinder (21); A winding adjustment frame (23) is mounted on the detection end of the winding pressure sensor (22); Two electric cylinders (24) are provided. The electric cylinders (24) are installed on the winding and adjusting frame (23). The two electric cylinders (24) are arranged symmetrically. The output ends of the two electric cylinders (24) contact each other to form a winding support rod. Two roll positioning parts are provided. The roll positioning parts are set on the winding and adjusting frame (23). The two sets of roll positioning parts are symmetrically arranged. The roll positioning parts correspond one-to-one with the material picking electric cylinder (24) and are used to position the roll of toilet paper.

7. A double creping device for toilet paper production according to claim 6, characterized in that, The roll positioning part includes: A telescopic cylinder (25) with a limiting function is provided. One end of the telescopic cylinder (25) is set on the winding adjustment frame (23), and a positioning plate (26) is set on the other end of the telescopic cylinder (25). Positioning ring (27), which is rotatably disposed on the side of the positioning plate (26) away from the telescopic cylinder (25).

8. A double creping device for toilet paper production according to claim 7, characterized in that, The wrinkling knife assembly (006) includes: Tool holder (28), the tool holder (28) is disposed on the processing frame (1), and a wrinkling blade is detachably disposed on the tool holder (28); A dust collection box (29) is provided on the processing rack (1), and the tool holder (28) is located inside the dust collection box (29); A dust collection drawer (30) is detachably and slidably disposed inside the dust collection box (29); Dust guide plate (31), two dust guide plates (31) are provided. The dust guide plate (31) is set inside the dust collection box (29). The dust guide plate (31) is located between the dust collection box (29) and the dust collection drawer (30). The two dust guide plates (31) are arranged symmetrically.

9. A double-creping method for toilet paper production, using the double-creping device for toilet paper production as described in claim 8, characterized in that, Includes the following steps: S1. Preheating: Connect one end of the three-way air supply pipe (11) in the air inlet heating pipe group (002) and the air outlet heating pipe group (003) to the steam generator. Adjust the temperature of the steam through the steam generator so that the heating steam flows along the air inlet power pipe (6), the air inlet short pipe (8) and the air inlet through hole and fills the entire drying cylinder (4). The steam that enters the drying cylinder (4) then flows back to the steam generator along the air outlet through hole, the air outlet short pipe (9) and the air outlet power sleeve (7) to complete the preheating operation of the drying cylinder (4). S2. Paper conveying and drying: When conveying and drying the dehydrated paper, the conveyor motor (12) is started. The output end of the conveyor motor (12) drives the feeding roller (2) to rotate. The feeding roller (2) drives the bevel gear one (13) connected to it to rotate. The rotation of bevel gear one (13) drives the bevel gear two (15) meshing with it to rotate. Through the cooperation of bevel gear two (15) and transmission rod (14), the air inlet power pipe (6), the air outlet power sleeve (7), the air inlet short pipe (8), the air outlet short pipe (9), and the drying cylinder (4) are driven to dry. The feed roller (2) and the two drying cylinders (4) rotate synchronously. With the cooperation of the first transmission part and the second transmission part, the feed roller (2) and the adjacent drying cylinder (4) rotate in opposite directions, and the two drying cylinders (4) rotate in opposite directions. This causes one end of the dehydrated toilet paper to move towards the winding mechanism (005) from the top of the feed roller (2), the bottom of the drying cylinder (4) adjacent to the feed roller (2), and the side of the drying cylinder (4) away from the feed roller (2). The heated drying cylinder (4) dries both sides of the toilet paper. S3. Paper wrinkling: After the toilet paper is dried by the rotation of the drying drum (4), when the paper passes through the wrinkling blade, the toilet paper stuck to the drying drum (4) is scraped out by the wrinkling blade. During the scraping process, the wrinkling blade can cut the fibers in the toilet paper, so that the surface of the paper wrinkles. S4. Roll positioning: Select a suitable paper roll according to the width of the paper being produced. Place the two sides of the paper roll on one side of the output end of the two picking electric cylinders (24). Start the picking electric cylinders (24) so ​​that the output ends of the two picking electric cylinders (24) come into contact and support the paper roll. Then, by adjusting the length of the telescopic cylinder (25), make the positioning ring (27) come into contact with one end of the paper roll to position the paper roll. S5. Paper winding: After positioning the paper roll, wrap the end of the scrambled toilet paper around the paper roll. By activating the winding electric cylinder (21), the output end of the winding electric cylinder (21) drives the winding pressure sensor (22) to move. The detection end of the winding pressure sensor (22) drives the winding adjustment frame (23) to move. The movement of the winding adjustment frame (23) drives the material picking electric cylinder (24) to move. The output end of the material picking electric cylinder (24) drives the paper roll to move, so that the toilet paper wound on the surface of the paper roll is in contact with the winding speed adjustment roller (16). When the surfaces are in contact, the output end of the conveyor motor (12) drives the drying cylinder (4) to rotate. Through the cooperation of the first conveyor pulley (17), the second conveyor pulley (18) and the conveyor belt (19) can drive the winding speed regulating roller (16) to rotate synchronously. The rotation of the winding speed regulating roller (16) drives the paper to be wound onto the paper roll at a uniform speed. As the thickness of the toilet paper on the paper roll increases, the winding pressure sensor (22) detects the change in pressure, and the winding electric cylinder (21) adjusts the distance between the paper roll and the winding speed regulating roller (16).

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