Full-automatic paper turning machine

Abstract

The invention relates to the field of paper turning machines, and particularly discloses a full-automatic paper turning machine which comprises a frame, a feeding mechanism, a reversing mechanism and a discharging mechanism, the feeding mechanism comprises a first net-shaped conveying belt horizontally installed on the frame, and the discharging mechanism comprises a second net-shaped conveying belt horizontally installed below the frame and a semicircular positive pressure pipe. The circle center line of the semicircular positive pressure pipe is arranged in the width direction of the first net-shaped conveying belt, the feeding end of the semicircular positive pressure pipe receives paper output by the first net-shaped conveying belt, the discharging end conveys the turned-over paper to the first net-shaped conveying belt, and the reversing mechanism is further provided with an inner circumference conveying assembly and an outer circumference conveying assembly which can spray airflow to the discharging end. The technical effects that the paper is automatically turned over and conveyed, the working efficiency is improved, and meanwhile, the stability and reliability of the paper turning process are guaranteed through airflow conveying and special structural design are achieved.

Description

Technical Field

[0001] The present application relates to the field of paper turning machines, and in particular to a fully automatic paper turning machine. Background Art

[0002] With the continuous development of industries like printing, packaging, and papermaking, the demand for automated and efficient production equipment is becoming increasingly urgent. As a key piece of equipment, paper turning machines are used throughout several important processes, including printing, die-cutting, and folding. They enable rapid and accurate paper or cardboard turning in continuous production, making them particularly suitable for high-volume production. This not only reduces manual labor and improves production efficiency, but also ensures accurate and consistent paper turning.

[0003] In the related art, when turning paper or cardboard, commercially available paper turning machines often require manual intervention during the front-end paper sorting and stacking stages. Operators, relying on their experience and skills, manually sort and neatly stack the sheets one by one to ensure that the paper entering the subsequent process meets the requirements.

[0004] Regarding the above-mentioned related technologies, the existing paper turning machines on the market can turn over a small amount of paper at a time, and the placement and stacking of paper at the front end usually requires manual intervention. The manual operation may cause contamination and damage to the paper, which reduces the efficiency and quality of paper turning. Summary of the Invention

[0005] In order to improve the efficiency and quality of paper turning, the present application provides a fully automatic paper turning machine.

[0006] The fully automatic paper turning machine provided in this application adopts the following technical solution: A fully automatic paper turning machine includes a frame, a feeding mechanism, a reversing mechanism and a discharging mechanism, wherein the feeding mechanism includes a first mesh conveyor belt horizontally mounted on the frame; the discharging mechanism includes a second mesh conveyor belt horizontally mounted on the frame, and the second mesh conveyor belt is arranged directly below the first mesh conveyor belt; the discharging mechanism includes a semicircular positive pressure tube, the feeding end of the semicircular positive pressure tube outputs airflow to the discharging end of the semicircular positive pressure tube; the feeding end of the semicircular positive pressure tube is used to receive the paper output by the first mesh conveyor belt; the discharging end of the semicircular positive pressure tube is used to transport the turned-over paper to the first mesh conveyor belt.

[0007] By adopting the above technical solution, the first mesh conveyor belt is used to transport paper to the semicircular positive pressure tube, and the second mesh conveyor belt is arranged directly below the first mesh conveyor belt to receive the turned-over paper. The airflow output from the feed end of the semicircular positive pressure tube can drive the paper to move and turn it over, thereby realizing the automatic turning over and conveying function of the paper.

[0008] Preferably, the center line of the semicircular positive pressure tube is arranged along the width direction of the first mesh conveyor belt.

[0009] By adopting the above technical solution, the semicircular positive pressure tube can better receive the paper output by the first mesh conveyor belt, facilitate the turning over of the paper in the semicircular positive pressure tube, and help to subsequently transport the turned-over paper to the second mesh conveyor belt.

[0010] Preferably, the feed end of the semicircular positive pressure tube is arranged above the discharge end of the first mesh conveyor belt; the feed end of the semicircular positive pressure tube is provided with a feed pipe arranged along the length direction of the first mesh conveyor belt, the feed pipe is in contact with the first mesh conveyor belt, and the feed end of the feed pipe is chamfered outward; the discharge end of the semicircular positive pressure tube is arranged above the feed end of the first mesh conveyor belt.

[0011] By adopting the above technical solution, the feed end of the semicircular positive pressure tube is arranged above the discharge end of the first mesh conveyor belt, so as to receive the paper output by the first mesh conveyor belt; the feed tube is arranged along the length direction of the first mesh conveyor belt and contacts the first mesh conveyor belt, and the feed end is rounded outward to avoid the paper from getting stuck at the feed end, ensuring that the paper enters the feed tube smoothly; the discharge end of the semicircular positive pressure tube is arranged above the feed end of the first mesh conveyor belt, so that the turned-over paper can be transported to the first mesh conveyor belt.

[0012] Preferably, the feed end of the feed pipe is also provided with a U-shaped plate arranged along the length direction of the first mesh conveyor belt, and the inner wall of the U-shaped plate is coplanar with the inner wall of the feed pipe; the feed side of the U-shaped plate is provided with a rotating rod, and the rotating rod can be raised and lowered on the frame above the first mesh conveyor belt; the inner side of the discharge end of the first mesh conveyor belt is provided with a jet hood arranged opposite to the U-shaped plate.

[0013] By adopting the above technical solution, the rotating roller cooperates with the first mesh conveyor belt to clamp and convey the paper into the U-shaped plate. The jet from the jet hood can blow the feed end of the paper upward to prevent the paper from being stuck at the feed end of the feed tube due to the height difference of the wall thickness of the feed tube. The U-shaped plate can limit the height of the paper blown upward to prevent the feed end of the paper from rising above the feed tube, so that the rotating roller cooperates with the first mesh conveyor belt to effectively and accurately convey the paper into the feed tube.

[0014] Preferably, a horizontally arranged isolation plate is provided between the jet hood and the feed end of the first mesh conveyor belt; the isolation plate is arranged on the inner side of the first mesh conveyor belt, and the isolation plate is in contact with the upper end belt body of the first mesh conveyor belt, and the isolation plate is at least partially arranged opposite to the U-shaped plate.

[0015] By adopting the above technical solution, the isolation plate is on the inner side of the first mesh conveyor belt and in contact with the upper end belt body and at least partially opposite to the U-shaped plate, thereby preventing the paper from being blown upward by the airflow ejected by the jet hood before entering the U-shaped plate, ensuring that the paper can smoothly enter the U-shaped plate when being blown up.

[0016] Preferably, the reversing mechanism also includes an inner conveying component and an outer conveying component, and the inner conveying component and the outer conveying component are both arranged in the semicircular positive pressure tube; the inner conveying component is arranged close to the center line of the semicircular positive pressure tube; the outer conveying component is arranged away from the center line of the semicircular positive pressure tube; the inner conveying component and the outer conveying component both spray air flow toward the discharge end of the semicircular positive pressure tube.

[0017] By adopting the above technical solution, an inner conveying component and an outer conveying component are set in the semicircular positive pressure tube, and they are respectively close to and away from the center line of the circle and both spray air flow toward the discharge end, which can push the paper to move toward the discharge end in the semicircular positive pressure tube, thereby realizing the transportation of paper in the semicircular positive pressure tube.

[0018] Preferably, the inner circumference conveying component includes a plurality of first air outlet circular tubes arranged along the width direction of the first mesh conveyor belt, and the plurality of first air outlet circular tubes are distributed along the circumferential direction of the semicircular positive pressure tube; one end of the first air outlet circular tube is closed, and the other end has an opening; the closed end of the first air outlet circular tube is arranged in the semicircular positive pressure tube and is rotatably connected to the semicircular positive pressure tube; a plurality of groups of first air holes located in the semicircular positive pressure tube are provided on the tube wall of the first air outlet circular tube, and the first air holes are arranged toward the discharge end of the semicircular positive pressure tube.

[0019] By adopting the above-mentioned technical solution, the inner circumference conveying component adopts multiple first air outlet circular tubes distributed along the width direction of the first mesh conveyor belt and along the circumferential direction of the semicircular positive pressure tube. The closed end of the first air outlet circular tube is arranged in the semicircular positive pressure tube and is rotatably connected to the semicircular positive pressure tube. The tube wall is provided with multiple groups of first air holes, which can eject air from the first air holes when the first air outlet circular tube rotates. The air flow carries the paper toward the discharge pipe, thereby realizing the transportation of the paper in the semicircular positive pressure tube. If the paper touches the first air outlet circular tube, the rotating first air outlet circular tube can also transport the paper toward the discharge pipe.

[0020] Preferably, a first transition plate is sandwiched between two adjacent first air outlet circular tubes; the thickness of the first transition plate increases from the feed end of the semicircular positive pressure tube to the discharge end of the semicircular positive pressure tube; the first transition plate is provided with a first inclined surface at one end away from the center line of the semicircular positive pressure tube, the feed end of the first inclined surface is arranged along the radial direction of the adjacent first air outlet circular tube, and the discharge end of the first inclined surface is tangent to the adjacent first air outlet circular tube.

[0021] By adopting the above technical solution, when the first air outlet circular pipe sprays air flow, the first inclined surface can limit the direction of the air flow sprayed out of the first air hole, so that the first air outlet circular pipe can only spray air flow toward the discharge pipe, ensuring that the air flow carries the paper toward the discharge pipe, thereby realizing the transportation of paper in the semicircular positive pressure tube.

[0022] Preferably, the peripheral conveying component includes a plurality of second air outlet circular tubes arranged along the width direction of the second mesh conveyor belt, and the plurality of second air outlet circular tubes are distributed along the circumferential direction of the semicircular positive pressure tube; one end of the second air outlet circular tube is closed, and the other end has an opening; the closed end of the second air outlet circular tube is arranged in the semicircular positive pressure tube and is rotatably connected to the semicircular positive pressure tube; a plurality of groups of second air holes located in the semicircular positive pressure tube are provided on the tube wall of the second air outlet circular tube, and the second air holes are arranged toward the discharge end of the semicircular positive pressure tube.

[0023] By adopting the above technical solution, multiple second air outlet circular pipes are distributed along the circumferential direction of the semicircular positive pressure pipe and multiple groups of second air holes are provided on the pipe wall. In conjunction with the inner circumference conveying component, the airflow can carry the paper toward the discharge pipe, thereby realizing the conveyance of paper in the semicircular positive pressure pipe.

[0024] Preferably, a second transition plate is sandwiched between two adjacent second air outlet circular tubes; the thickness of the second transition plate increases from the feed end of the semicircular positive pressure tube to the discharge end of the semicircular positive pressure tube; the second transition plate is provided with a second inclined surface at one end close to the center line of the semicircular positive pressure tube, the feed end of the second inclined surface is arranged along the radial direction of the adjacent second air outlet circular tube, and the discharge end of the second inclined surface is tangent to the adjacent second air outlet circular tube.

[0025] By adopting the above technical solution, the setting of the second inclined surface can limit the direction of the airflow ejected from the second air hole, so that the second air outlet circular pipe can only eject airflow in the direction of the discharge pipe, allowing the airflow to carry the paper toward the discharge pipe, thereby realizing the transportation of paper in the semicircular positive pressure tube; and as the thickness of the second transition plate increases, it can better guide the airflow and the transportation path of the paper in the semicircular positive pressure tube, ensuring that the paper is stably transported to the discharge pipe.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. The paper at the bottom of the lifting tube is adsorbed onto the first mesh conveyor belt through the first suction hood, making it easier to remove the paper and stably transport it to the next process; 2. The jet hood blows up the paper feeding end, and the U-shaped plate limits the blowing height, so that the paper can be effectively and accurately transported into the feed pipe, avoiding paper jams due to height differences in the feed pipe wall thickness; 3. The reversing mechanism transports the paper to the second mesh conveyor belt for turning over. The second suction hood suctions air to allow the paper to be effectively and stably adsorbed on the second mesh conveyor belt to prevent it from being blown out of the belt, making it easier to transport to the next process. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0028] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 It is a schematic diagram of the overall cross-sectional structure of an embodiment of the present application; Figure 3 yes Figure 2 Schematic diagram of the enlarged structure of part A.

[0029] Reference numerals: 1. Frame; 2. Feed mechanism; 21. First mesh conveyor belt; 22. Unloading assembly; 221. Lifting tube; 2201. Observation hole; 222. Side door; 223. Pressing plate; 224. Counterweight; 225. Reel; 226. Rope; 227. Guide rod; 23. First suction hood; 24. Jet hood; 25. Isolation plate; 26. Rotating rod; 3. Reversing mechanism; 31. Semicircular positive pressure tube; 311. Feeding tube; 312. Discharging tube ; 32. U-shaped plate; 33. Inner circumferential conveying assembly; 331. First air outlet circular pipe; 3301. First air hole; 332. First transition plate; 333. First inclined plane; 34. Outer circumferential conveying assembly; 341. Second air outlet circular pipe; 3401. Second air hole; 342. Second transition plate; 343. Second inclined plane; 35. Transfer chamber; 36. Fan; 4. Discharging mechanism; 41. Second mesh conveyor belt; 42. Second suction hood; 5. Paper. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-3 This application is described in further detail.

[0031] The embodiment of the present application discloses a fully automatic paper turning machine.

[0032] Reference Figure 1 and Figure 2 A fully automatic paper turning machine includes a frame 1, a feeding mechanism 2, a reversing mechanism 3 and a discharging mechanism 4, and the feeding mechanism 2, the reversing mechanism 3 and the discharging mechanism 4 are all installed on the frame 1.

[0033] Reference Figure 1 and Figure 2 The feeding mechanism 2 includes a first mesh conveyor belt 21, a discharge assembly 22, a first suction hood 23, an air discharge hood 24, and an isolation plate 25. The first mesh conveyor belt 21 is horizontally mounted on the frame 1. The discharge assembly 22 is located at the feed end of the first mesh conveyor belt 21 and includes a lifting pipe 221 and a side door 222. The lifting pipe 221 is vertically mounted above the first mesh and is vertically movable on the frame 1. The lifting pipe 221 is used to store spiral paper 5. The paper 5 is pressed against the first mesh conveyor belt 21 by gravity. The height of the lifting pipe 221 is adjusted so that the distance between the lower end of the lifting pipe 221 and the first mesh conveyor belt 21 is at least one layer of paper 5 and less than two layers of paper 5. As the first mesh conveyor belt 21 runs, the paper 5 at the bottom end of the lifting pipe 221 can be transported away layer by layer. The side wall of the lifting tube 221 is provided with an observation hole 2201 for observing the status of the paper 5 inside the lifting tube 221. A side door 222 is provided on the side wall of the lifting tube 221. By opening the side door 222, a worker places the stack of paper 5 into the lifting tube 221.

[0034] Reference Figure 1 and Figure 2 Specifically, a vertically arranged lifting member is connected between the side wall of the lifting tube 221 and the frame 1, such as a vertically arranged guide rail, a vertically arranged ball screw slide, or other lifting members with high precision. The lifting tube 221 is driven to rise and fall by the lifting member.

[0035] Reference Figure 1 and Figure 2 The blanking assembly 22 also includes a pressure plate 223, a counterweight 224, a pulley 225, a rope 226 and a plurality of guide rods 227. The pressure plate 223 is horizontally liftable and arranged on the inner side of the lifting tube 221 to press the paper 5 downward to ensure that the paper 5 is in effective contact with the first mesh conveyor belt 21 to avoid material jamming. In order to enhance the downward pressing effect of the pressure plate 223, the counterweight 224 is detachably mounted on the pressure plate 223. The pulley 225 is rotatably mounted on the frame 1 above the lifting tube 221. Specifically, the pulley 225 is driven to rotate by a motor. One end of the rope 226 is connected to the pulley 225, and the other end is connected to the pressure plate 223. The rotation of the pulley 225 realizes the winding and unwinding of the rope 226, thereby realizing the lifting and lowering of the pressure plate 223. To ensure the directional movement of the pressure plate 223, multiple guide rods 227 are vertically mounted on the upper end of the pressure plate 223. One end of the guide rod 227 is connected to the pressure plate 223, and the other end is slidably connected to the frame 1. When the pressure plate 223 needs to press down the paper 5, the wire wheel 225 unwinds, allowing the pressure plate 223 to effectively press the paper 5 due to the weight of the counterweight 224. When the paper 5 is loaded, the wire wheel 225 rewinds, and the pressure plate 223 rises.

[0036] Reference Figure 1 and Figure 2 Multiple first suction hoods 23 are disposed inside the feed end of the first mesh conveyor belt 21, and are positioned opposite the lower end of the lift tube 221. Each of the multiple first suction hoods 23 can be connected to a conventional first suction pump. The first suction pump drives the multiple first suction hoods 23 to suction air, allowing the paper 5 at the lowest end of the lift tube 221 to be adsorbed onto the first mesh conveyor belt 21, thereby facilitating the first mesh conveyor belt 21 to stably transport the paper 5 to the next process.

[0037] Reference Figure 1 and Figure 2 The jet hood 24 is arranged on the inner side of the discharge end of the first mesh conveyor belt 21, and the jet port of the jet hood 24 is arranged upward. The air inlet end of the jet hood 24 can be connected to a conventional first fan 36, and the jet hood 24 is driven by the first fan 36 to spray.

[0038] Reference Figure 1 and Figure 2 The discharge mechanism 4 includes a second mesh conveyor belt 41, which is horizontally mounted on the frame 1 below the first mesh conveyor belt 21 and arranged parallel to and opposite the first mesh conveyor belt 21. Multiple second suction hoods 42 are provided on the inner side of the second mesh conveyor belt 41. Each of the multiple second suction hoods 42 can be connected to a conventional second suction pump, which drives the multiple second suction hoods 42 to absorb air.

[0039] Reference Figure 1 and Figure 2The reversing mechanism 3 includes a semicircular positive pressure tube 31 and a U-shaped plate 32. The centerline of the semicircular positive pressure tube 31 is arranged along the width direction of the first mesh conveyor belt 21. The feed end of the semicircular positive pressure tube 31 is located above the discharge end of the first mesh conveyor belt 21. The feed end of the semicircular positive pressure tube 31 is provided with a feed tube 311 arranged along the length direction of the first mesh conveyor belt 21. The feed tube 311 is in contact with the first mesh conveyor belt 21, and the feed end of the feed tube 311 is rounded outward to facilitate the entry of paper 5 into the feed tube 311. The feed end of the feed tube 311 is also provided with a U-shaped plate 32 arranged along the length direction of the first mesh conveyor belt 21. The inner wall of the U-shaped plate 32 is coplanar with the inner wall of the feed tube 311, and the notch of the U-shaped plate 32 faces the first mesh conveyor belt 21. The feed side of the U-shaped plate 32 is provided with a rotating rod 26. The rotating rod 26 is arranged on the frame 1 above the first mesh conveyor belt 21 and can be raised and lowered. The rotating rod 26 cooperates with the first mesh conveyor belt 21 to clamp and convey the paper 5. Specifically, the rotating rod 26 is driven by a conventional motor and can be equipped with a vertically arranged guide rail, a vertically arranged ball screw slide, or other conventional lifting parts with high precision. The isolation plate 25 is horizontally arranged on the inner side of the first mesh conveyor belt 21 and is located between the jet hood 24 and the multiple first suction hoods 23. The isolation plate 25 contacts the upper end of the first mesh conveyor belt 21. The isolation plate 25 is at least partially arranged relative to the U-shaped plate 32 to prevent the paper 5 from being blown upward by the airflow ejected by the jet hood 24 before entering the U-shaped plate 32, ensuring that the paper 5 can smoothly enter the U-shaped plate 32 after being blown up.

[0040] Reference Figure 1 and Figure 2 The discharge end of the semicircular positive pressure pipe 31 is arranged above the feed end of the second mesh conveyor belt 41. The discharge end of the semicircular positive pressure pipe 31 is provided with a discharge pipe 312 arranged along the length direction of the second mesh conveyor belt 41.

[0041] Reference Figure 1 and Figure 2Specifically, as the rotating roller 26 cooperates with the first mesh conveyor belt 21 to convey the clamped paper 5 to the inside of the U-shaped plate 32, the air hood 24 emits air, blowing the feed end of the paper 5 upward to prevent it from getting stuck at the feed end of the feed tube 311 due to the height difference in the wall thickness of the feed tube 311. The U-shaped plate 32 limits the height of the paper 5 being blown upward, preventing the feed end of the paper 5 from rising above the feed tube 311. Consequently, the rotating roller 26 and the first mesh conveyor belt 21 can effectively and accurately convey the paper 5 into the feed tube 311. After the paper 5 passes through the semicircular positive pressure tube 31 and is reversed when it is conveyed to the second mesh conveyor belt 41, the paper 5 is flipped over. Furthermore, during the operation of the second mesh conveyor belt 41, the second air suction hood 42 draws air, ensuring that the paper 5 is effectively and stably adsorbed on the second mesh conveyor belt 41, facilitating the second mesh conveyor belt 41 to stably transport the flipped paper 5 to the next process.

[0042] Reference Figure 1 、 Figure 2 and Figure 3 The reversing mechanism 3 further includes an inner conveying assembly 33, an outer conveying assembly 34, a transfer chamber 35, and a second fan 36. The inner conveying assembly 33 and the outer conveying assembly 34 are both arranged in the semicircular positive pressure tube 31, and the inner conveying assembly 33 is arranged on the inner wall of the semicircular positive pressure tube 31 near the center of the semicircular positive pressure tube 31, and the outer conveying assembly 34 is arranged on the inner wall of the semicircular positive pressure tube 31 away from the center of the semicircular positive pressure tube 31.

[0043] Reference Figure 1 、 Figure 2 and Figure 3The inner circumference conveying assembly 33 includes a plurality of first air outlet circular tubes 331 and a plurality of first transition plates 332. The first air outlet circular tubes 331 and the first transition plates 332 are both arranged along the center line direction of the semicircular positive pressure tube 31. The plurality of first air outlet circular tubes 331 and the plurality of first transition plates 332 are all distributed along the circumferential direction of the semicircular positive pressure tube 31. A first transition plate 332 is sandwiched between two adjacent first air outlet circular tubes 331, and the first air outlet circular tubes 331 and the first transition plates 332 are in contact. One end of the first air outlet circular tube 331 is closed, and the other end has an opening. The closed end of the first air outlet circular tube 331 is arranged inside the semicircular positive pressure tube 31 and is rotatably connected to the semicircular positive pressure tube 31. The first air outlet circular tube 331 is driven to rotate by conventional technical means, for example: a driven gear sleeved on the first air outlet circular tube 331 is provided outside the semicircular positive pressure tube 31, and a conventional motor is used in combination with a conventional gear transmission structure to drive the driven gear to rotate. The wall of the first air outlet tube 331 is provided with multiple groups of first air holes 3301 located within the semicircular positive pressure tube 31. These groups of first air holes 3301 are distributed along the circumference of the first air outlet tube 331, with each group of first air holes 3301 comprising multiple first air holes 3301 distributed along the axis of the first air outlet tube 331. A transfer chamber 35 is provided outside the semicircular positive pressure tube 31. The open end of the first air outlet tube 331 communicates with the transfer chamber 35, and the open end of the first air outlet tube 331 is rotatably connected to the transfer chamber 35. From the feed end of the semicircular positive pressure tube 31 to the discharge end of the semicircular positive pressure tube 31, the thickness of the first transition plate 332 increases gradually. The end of the first transition plate 332 away from the center line of the semicircular positive pressure tube 31 is provided with a first inclined surface 333. The feed end of the first inclined surface 333 is arranged along the radial direction of the adjacent first air outlet circular tube 331, and the discharge end of the first inclined surface 333 is tangent to the adjacent first air outlet circular tube 331. The setting of the first inclined surface 333 is used to limit the direction of the airflow ejected from the first air hole 3301, so that the first air outlet circular tube 331 can only eject airflow in the direction of the discharge pipe 312.

[0044] Reference Figure 1 、 Figure 2 and Figure 3The peripheral conveying assembly 34 includes a plurality of second air outlet circular tubes 341 and a plurality of second transition plates 342. The second air outlet circular tubes 341 and the second transition plates 342 are both arranged along the center line direction of the semicircular positive pressure tube 31. The plurality of second air outlet circular tubes 341 and the plurality of second transition plates 342 are both distributed along the circumferential direction of the semicircular positive pressure tube 31. A second transition plate 342 is sandwiched between two adjacent second air outlet circular tubes 341, and the second air outlet circular tubes 341 and the second transition plates 342 are in contact. One end of the second air outlet circular tube 341 is closed, and the other end has an opening. The closed end of the second air outlet circular tube 341 is arranged in the semicircular positive pressure tube 31 and is rotatably connected to the semicircular positive pressure tube 31. The second air outlet circular tube 341 is driven to rotate by conventional technical means, for example: a driven gear sleeved on the second air outlet circular tube 341 is provided outside the semicircular positive pressure tube 31, and a conventional motor is used in combination with a conventional gear transmission structure to drive the driven gear to rotate. The wall of the second air outlet tube 341 is provided with multiple groups of second air holes 3401 located within the semicircular positive pressure tube 31. These groups of second air holes 3401 are distributed along the circumference of the second air outlet tube 341, with each group of second air holes 3401 comprising multiple second air holes 3401 distributed along the axis of the second air outlet tube 341. A transfer chamber 35 is provided outside the semicircular positive pressure tube 31. The open end of the second air outlet tube 341 communicates with the transfer chamber 35 and is rotatably connected to the transfer chamber 35. From the feed end of the semicircular positive pressure tube 31 to the discharge end of the semicircular positive pressure tube 31, the thickness of the second transition plate 342 increases gradually. The second transition plate 342 is provided with a second inclined surface 343 at one end close to the center line of the semicircular positive pressure tube 31. The feed end of the second inclined surface 343 is arranged along the radial direction of the adjacent second air outlet circular tube 341, and the discharge end of the second inclined surface 343 is tangent to the adjacent second air outlet circular tube 341. The setting of the second inclined surface 343 is used to limit the direction of the airflow ejected from the second air hole 3401, so that the second air outlet circular tube 341 can only eject airflow in the direction of the discharge pipe 312.

[0045] Reference Figure 1 、 Figure 2 and Figure 3 The transfer chamber 35 is connected to the second fan 36, which ejects air into the transfer chamber 35, causing the first and second circular air outlet pipes 331 and 341 to eject air. When the first and second circular air outlet pipes 331 and 341 eject air toward the discharge pipe 312, the airflow carries the paper 5 toward the discharge pipe 312, thereby transporting the paper 5 within the semicircular positive pressure pipe 31.

[0046] The implementation principle of a fully automatic paper turning machine in the embodiment of the present application is as follows: Open the side door 222, raise the pressure plate 223, and place a stack of paper sheets 5 inside the lifting tube 221. Adjust the height of the lifting tube 221 so that the distance between its lower end and the first mesh conveyor belt 21 is at least one layer of paper sheets 5 and less than two layers of paper sheets 5. Then, lower the pressure plate 223 so that the weight of the counterweight 224 effectively presses the paper sheets 5, thereby pressing the paper sheets 5 down onto the first mesh conveyor belt 21.

[0047] During the transportation process of the first mesh conveyor belt 21, multiple first suction hoods 23 suction air so that the paper 5 at the lower end of the lifting tube 221 can be adsorbed on the first mesh conveyor belt 21, which facilitates the first mesh conveyor belt 21 to smoothly pick up the material and stably transport the paper 5 to the next process.

[0048] When the first mesh conveyor belt 21 conveys the paper 5 to the rotating roller 26, the rotating roller 26 cooperates with the first mesh conveyor belt 21 to clamp the paper 5 and convey it into the U-shaped plate 32. At the discharge end of the U-shaped plate 32, the air hood 24 sprays air, blowing the feed end of the paper 5 upward to prevent the paper 5 from getting stuck at the feed end of the feed pipe 311 due to the height difference of the wall thickness of the feed pipe 311. The U-shaped plate 32 limits the height of the paper 5 being blown upward, preventing the feed end of the paper 5 from rising above the feed pipe 311. Therefore, the rotating roller 26 and the first mesh conveyor belt 21 can effectively and accurately convey the paper 5 into the feed pipe 311.

[0049] After the rotating roller 26 cooperates with the first mesh conveyor belt 21 to clamp the paper 5 and transport it to the semicircular positive pressure tube 31, the first air outlet circular tube 331 and the second air outlet circular tube 341 both rotate, and the first air outlet circular tube 331 rotates toward the discharge pipe 312, and the rotation direction of the second air outlet circular tube 341 is opposite to that of the first air outlet circular tube 331. At the same time, the first air outlet circular tube 331 and the second air outlet circular tube 341 both spray air toward the discharge pipe 312, and the air flow carries the paper 5 toward the discharge pipe 312, thereby realizing the transportation of the paper 5 in the semicircular positive pressure tube 31. If the paper 5 touches the first air outlet circular tube 331 and the second air outlet circular tube 341 during the bending process, the rotating first air outlet circular tube 331 and the second air outlet circular tube 341 can also transport the paper 5 toward the discharge pipe 312.

[0050] After the reversing mechanism 3 transports the paper 5 to the second mesh conveyor belt 41, the paper 5 is turned over, and during the operation of the second mesh conveyor belt 41, the second suction hood 42 draws air, so that the paper 5 can be effectively and stably adsorbed on the second mesh conveyor belt 41, making it easier for the second mesh conveyor belt 41 to stably transport the turned-over paper 5 to the next process, and preventing the airflow in the semicircular positive pressure tube 31 from directly blowing the paper 5 out of the second mesh conveyor belt 41.

[0051] Unless otherwise defined, the technical or scientific terms used in this application shall have the usual meanings understood by persons of ordinary skill in the field to which this application belongs. The words "first", "second", "third" and similar terms used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "one" or "a" do not indicate a quantity limitation, but rather indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before "include" or "comprises" cover the elements or objects listed after "include" or "comprises" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0052] The above are all optional embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A fully automatic paper turning machine, characterized by: It comprises a frame (1), a feeding mechanism (2), a reversing mechanism (3) and a discharging mechanism (4), wherein the feeding mechanism (2) comprises a first mesh conveyor belt (21) horizontally mounted on the frame (1); The discharging mechanism (4) comprises a second mesh conveyor belt (41) horizontally mounted on the frame (1), wherein the second mesh conveyor belt (41) is arranged directly below the first mesh conveyor belt (21); The discharge mechanism (4) comprises a semicircular positive pressure tube (31), wherein the feed end of the semicircular positive pressure tube (31) outputs airflow to the discharge end of the semicircular positive pressure tube (31); The feed end of the semicircular positive pressure tube (31) is used to receive the paper (5) output by the first mesh conveyor belt (21); The discharge end of the semicircular positive pressure tube (31) is used to transport the turned-over paper (5) to the first mesh conveyor belt (21).

2. The fully automatic paper turning machine according to claim 1, characterized in that: The center line direction of the semicircular positive pressure tube (31) is arranged along the width direction of the first mesh conveyor belt (21).

3. The fully automatic paper turning machine according to claim 2, characterized in that: The feed end of the semicircular positive pressure tube (31) is arranged above the discharge end of the first mesh conveyor belt (21); the feed end of the semicircular positive pressure tube (31) is provided with a feed tube (311) arranged along the length direction of the first mesh conveyor belt (21), the feed tube (311) is in contact with the first mesh conveyor belt (21), and the feed end of the feed tube (311) is rounded outwards; The discharge end of the semicircular positive pressure pipe (31) is arranged above the feed end of the first mesh conveyor belt (21).

4. The fully automatic paper turning machine according to claim 3, characterized in that: The feeding end of the feeding pipe (311) is further provided with a U-shaped plate (32) arranged along the length direction of the first mesh conveyor belt (21), and the inner wall of the U-shaped plate (32) is coplanar with the inner wall of the feeding pipe (311); A rotating rod (26) is provided on the feeding side of the U-shaped plate (32), and the rotating rod (26) is movably provided on the frame (1) above the first mesh conveyor belt (21); An air jet hood (24) is provided on the inner side of the discharge end of the first mesh conveyor belt (21) and is arranged opposite to the U-shaped plate (32).

5. The fully automatic paper turning machine according to claim 4, characterized in that: A horizontally arranged isolation plate (25) is provided between the jet hood (24) and the feed end of the first mesh conveyor belt (21); the isolation plate (25) is provided on the inner side of the first mesh conveyor belt (21), and the isolation plate (25) is in contact with the upper end of the first mesh conveyor belt (21), and at least a portion of the isolation plate (25) is arranged opposite to the U-shaped plate (32).

6. The fully automatic paper turning machine according to claim 5, characterized in that: The reversing mechanism (3) further comprises an inner peripheral conveying assembly (33) and an outer peripheral conveying assembly (34), wherein the inner peripheral conveying assembly (33) and the outer peripheral conveying assembly (34) are both arranged in the semicircular positive pressure tube (31); The inner peripheral conveying component (33) is arranged close to the center line of the semicircular positive pressure tube (31); The peripheral conveying component (34) is arranged away from the center line of the semicircular positive pressure tube (31); The inner peripheral conveying component (33) and the outer peripheral conveying component (34) both spray airflow toward the discharge end of the semicircular positive pressure tube (31).

7. The fully automatic paper turning machine according to claim 6, characterized in that: The inner circumferential conveying assembly (33) comprises a plurality of first air outlet circular tubes (331) arranged along the width direction of the first mesh conveyor belt (21), and the plurality of first air outlet circular tubes (331) are distributed along the circumferential direction of the semicircular positive pressure tube (31); One end of the first air outlet circular tube (331) is closed, and the other end has an opening; the closed end of the first air outlet circular tube (331) is arranged in the semicircular positive pressure tube (31) and is rotatably connected to the semicircular positive pressure tube (31); A plurality of first air holes (3301) located inside the semicircular positive pressure tube (31) are provided on the tube wall of the first air outlet circular tube (331), and the first air holes (3301) are arranged toward the discharge end of the semicircular positive pressure tube (31).

8. The fully automatic paper turning machine according to claim 7, characterized in that: A first transition plate (332) is sandwiched between two adjacent first air outlet circular tubes (331); The thickness of the first transition plate (332) increases gradually from the feed end of the semicircular positive pressure tube (31) to the discharge end of the semicircular positive pressure tube (31); A first inclined surface (333) is provided at one end of the first transition plate (332) away from the center line of the semicircular positive pressure tube (31); a feed end of the first inclined surface (333) is arranged along the radial direction of the adjacent first air outlet circular tube (331); and a discharge end of the first inclined surface (333) is tangent to the adjacent first air outlet circular tube (331).

9. The fully automatic paper turning machine according to claim 6, characterized in that: The peripheral conveying assembly (34) comprises a plurality of second air outlet circular tubes (341) arranged along the width direction of the second mesh conveyor belt (41), and the plurality of second air outlet circular tubes (341) are distributed along the circumferential direction of the semicircular positive pressure tube (31); One end of the second air outlet circular tube (341) is closed, and the other end has an opening; the closed end of the second air outlet circular tube (341) is arranged in the semicircular positive pressure tube (31) and is rotatably connected to the semicircular positive pressure tube (31); A plurality of second air holes (3401) located inside the semicircular positive pressure tube (31) are provided on the tube wall of the second air outlet circular tube (341), and the second air holes (3401) are arranged toward the discharge end of the semicircular positive pressure tube (31).

10. The fully automatic paper turning machine according to claim 9, characterized in that: A second transition plate (342) is sandwiched between two adjacent second air outlet circular tubes (341); The thickness of the second transition plate (342) increases gradually from the feed end of the semicircular positive pressure tube (31) to the discharge end of the semicircular positive pressure tube (31); A second inclined surface (343) is provided at one end of the second transition plate (342) close to the center line of the semicircular positive pressure tube (31); a feed end of the second inclined surface (343) is arranged along the radial direction of the adjacent second air outlet circular tube (341); and a discharge end of the second inclined surface (343) is tangent to the adjacent second air outlet circular tube (341).

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