Paperboard conveying device

Abstract

The utility model provides a paperboard conveying device. The paperboard conveying device comprises a rack, a surface paper conveying belt and a corrugated paper conveying belt. The corrugated paper storage belt is parallel to the surface paper conveying belt, a corrugated paper stacking plate lower than the corrugated paper storage belt is arranged at the end of the corrugated paper storage belt, a strip-shaped paper conveying groove, a paper separation pushing block and a paper separation knife are arranged on the stacking plate, and single corrugated paper is separated through a first driving mechanism. The device has the advantages of automatic conveying, accurate separation, large-batch storage, convenience in operation and the like. A specific structure comprising a first driving mechanism is further arranged, a roller reduces friction force, a paper pressing wheel and a paper outlet pressing wheel assist in conveying, a corrugated paper limiting plate adjusts the position, a corrugated paper sensor detects corrugated paper, and a positioning plate and a positioning frame ensure that the position of the corrugated paper is correct. Through the design, the production efficiency is improved, and the stability and accuracy of paper are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to paperboard conveying device. BACKGROUND

[0002] At present, in order to beautify the packaging box or add product information on the packaging box, the paper box needs to combine the face paper to the box blank in the processing process to form the box body or the box cover, and finally forms the packaging box with perfect appearance and complete information. After the face paper and the box blank are respectively formed, the face paper is glued at appropriate parts, and the face paper is pasted to the bottom surface of the box blank by using adhesive, and then the edge folding part of the face paper is folded.

[0003] Firstly, in the paper box forming production process, the transportation of face paper and pit paper is inevitably involved, since the pit paper is usually placed in piles, so it is necessary to separate the pit paper in piles into single pit paper for processing in the paper box forming machine. The traditional manual operation mode is low in efficiency and prone to errors, and cannot meet the needs of modern high-speed production.

[0004] The utility model discloses a paperboard conveying device which can accurately separate single pit paper and store a large quantity of pit paper. Figure 1 It can be clearly seen that the material conveying directions of the pit paper conveying positioning module and the face paper conveying positioning module are perpendicular to each other. For the paper box which is a cuboid and not a square, the structure must be placed according to a specific direction when placing the face paper and the pit paper, and the directions of the face paper and the pit paper cannot be consistent, which makes it necessary for the operator to understand the placing direction of the face paper and the pit paper before placing the materials according to the correct direction of each, and the operation is extremely inconvenient. UTILITY MODEL CONTENTS

[0005] The utility model discloses a paperboard conveying device which can accurately separate single pit paper and store a large quantity of pit paper.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: Paperboard conveying device, including frame and the face paper conveying belt of installing on the frame, the face paper conveying belt is linked with first belt drive component, the face paper conveying belt top is provided with pit paper storage belt, pit paper storage belt is linked with second belt drive component, its characterized in that: pit paper storage belt is parallel to face paper conveying belt, the end of pit paper storage belt is equipped with pit paper stacking plate, pit paper stacking plate is lower than pit paper storage belt, the end of pit paper stacking plate away from pit paper storage belt is provided with pit paper conveying belt, pit paper conveying belt is linked with third belt drive component, the middle part of pit paper stacking plate is equipped with the strip-shaped paper conveying groove that sets along pit paper storage belt transportation direction, the end of strip-shaped paper conveying groove towards pit paper storage belt is equipped with paper separating push block, the end of strip-shaped paper conveying groove towards pit paper conveying belt is equipped with the paper separating knife that distributes on pit paper stacking plate top, paper separating push block is linked with first drive mechanism, first drive mechanism can drive paper separating push block reciprocating motion towards strip-shaped paper conveying groove.

[0007] The scheme has the following advantages: (1) the face paper conveying belt sequentially and orderly conveys the face paper, and the face paper is sequentially in a single sheet laying state; the pit paper conveying belt sequentially and orderly conveys the pit paper, and accurately separates a single sheet of pit paper from the stacked pit paper by means of the pit paper stacking plate, the paper separating knife, the paper separating pushing block and the driving block, and sequentially conveys the single sheet of pit paper to the pit paper conveying belt, so that the automatic conveying of the pit paper and the face paper is realized, manual intervention is reduced, and the production efficiency is improved. (2) The cooperation of the paper separating pushing block and the paper separating knife ensures that only a single sheet of pit paper can be separated from the pit paper stack each time, and the situation that multiple sheets of pit paper are pushed at the same time is avoided. (3) The pit paper storage belt not only can sequentially convey the stacked pit paper, but also can store a large amount of pit paper, and does not need to store the pit paper multiple times and frequently. The position of the pit paper stacking plate is lower than that of the pit paper storage belt, so that better working conditions are provided for the paper separating work, and the pit paper storage belt does not affect the paper separating work. (4) The pit paper storage belt and the face paper conveying belt are parallel to each other, no matter whether the carton is a rectangular box or a carton of other shapes, as long as the directions of the face paper and the pit paper are kept consistent when the operator stores the materials, the operation is convenient. The specific operation is as follows: the first belt driving assembly drives the face paper conveying belt to continuously convey the face paper. The pit paper is pre-stored on the pit paper storage belt, the pit paper storage belt is driven by the second belt driving assembly, so that the pit paper can be smoothly moved to the position of the pit paper stacking plate. When the pit paper is conveyed from the pit paper storage belt and falls on the pit paper stacking plate, the first driving mechanism starts to work and drives the paper separating pushing block to move towards the pit paper, the paper separating pushing block pushes the pit paper at the lowermost position of the pit paper stacking plate to move forward, at the same time, the gap between the front-end paper separating knife and the pit paper stacking plate is accurately designed and only one sheet of paper can pass through, so that when the paper separating pushing block pushes the pit paper, only the single sheet of pit paper at the lowermost position can be separated and pushed to the pit paper conveying belt, and other pit papers remain on the stacking plate and wait for the next separation. The pit paper conveying belt drags the separated single sheet of pit paper to the next process.

[0008] The utility model discloses further can set up as: first driving mechanism includes lower fixed plate, the middle part of paper separating pushing block is articulated on lower fixed plate, one end of paper separating pushing block is towards strip -shaped paper conveying groove, and the other end has linked first air cylinder, and the body of first air cylinder is articulated with lower fixed plate.

[0009] After the corrugated paper is transported from the corrugated paper storage belt and falls onto the corrugated paper stacking plate, the system detects its presence and triggers the first drive mechanism to start working. First, the piston rod of the first cylinder extends, pushing one end of the paper-splitting push block. The paper-splitting push block swings around its middle (because the middle is hinged to the lower fixed plate), thereby pushing the bottommost corrugated paper forward. Thus, the paper-splitting push block will not push a long distance. Even if two or more sheets are pushed, due to the further separation by the front paper-splitting blade and the fact that the corrugated paper conveyor belt only pulls the bottommost corrugated paper, it ensures precise separation of a single sheet of corrugated paper, exhibiting excellent accuracy. The second cylinder and the first slide rail are used to adjust the position of the lower fixed plate to better accommodate different specifications and types of cardboard. Paper splitting begins after the position adjustment is completed.

[0010] This utility model can be further configured such that: several sets of rollers are evenly distributed on both sides of the strip-shaped paper conveying trough.

[0011] This reduces the friction between the bottom corrugated paper and the corrugated paper stacking plate, better assisting the paper separating push block in moving the bottom corrugated paper forward, and also making it easier for the corrugated paper conveyor belt to pull the bottom corrugated paper.

[0012] The present invention can be further configured as follows: two sets of symmetrically distributed pressing plates are provided above the corrugated paper conveyor belt, and a set of pressing wheels are respectively provided above both ends of the corrugated paper conveyor belt. The pressing wheels are distributed between the two sets of pressing plates and the pressing wheels are hinged to a first mounting shaft. The two ends of the first mounting shaft are respectively fixed to the pressing plates.

[0013] The pressure rollers are hinged to the first mounting shaft and distributed between the two sets of pressure plates, serving to press the corrugated paper and assist in its conveying. As the corrugated paper moves on the conveyor belt, the pressure rollers gently press on it to ensure that it fits tightly against the conveyor belt and remains stable, preventing the corrugated paper from wrinkling or shifting left or right.

[0014] The present invention can be further configured such that: the end of the corrugated paper conveyor belt away from the paper separating knife is provided with two sets of symmetrically distributed paper output pressure rollers, the paper output pressure rollers are hinged with swing arms, the end of the swing arms away from the paper output pressure rollers is provided with connecting holes, the connecting holes are fitted with a second mounting shaft, and the two ends of the second mounting shaft are respectively fixed to the pressure plate.

[0015] The paper-out pressure wheel presses the paper pit that is about to leave the conveying belt to prevent it from relaxing or jumping due to lack of support. At the same time, the paper-out pressure wheel also plays a guiding role to ensure that the paper pit can leave the conveying belt according to the predetermined path and direction. By changing the swing angle and position of the swing arm, the pressure of the paper-out pressure wheel can be adjusted, so that the paper-out pressure wheel can be flexibly adjusted according to the thickness, hardness and conveying speed of the paper, etc. to ensure the best pressing effect and paper stability. The swing arm is in transition with the second mounting shaft, and when the angle of the swing arm does not need to be adjusted, the swing arm can stably maintain the working angle; when the angle of the swing arm needs to be adjusted, the angle of the swing arm can be changed by applying a larger force or using a wrench, which is convenient to operate.

[0016] The utility model discloses further can set up: still install the paper pit limiting board that symmetrical distribution is in the strip shape paper conveying groove both sides on the frame, and each group paper pit limiting board is linked with support plate respectively, and be equipped with the second screw rod between two groups of support plates, be equipped with two groups of symmetrical distribution screw section on the second screw rod, and each group support plate is linked with the second screw rod through a group screw section, and a group paper pit limiting board is equipped with signal hole, and install the paper pit sensor for detecting paper pit at signal hole.

[0017] The paper pit limiting board limits the lateral movement of the paper pit during the conveying process, ensuring that it moves stably along the predetermined path. Through the linkage design of the support plate and the second screw rod, the position of the paper pit limiting board can be adjusted according to the specifications and thickness of the paper pit. The paper pit sensor is used to detect the presence and position of the paper pit.

[0018] The utility model discloses further can set up: be equipped with the locating plate above the paper pit storage belt, the locating plate is placed along parallel to paper pit storage belt conveying direction, and the locating plate is linked with the locating frame, the locating frame is linked with the second slide rail, the second slide rail is placed along perpendicular to paper pit storage belt conveying direction, the second slide rail is slidably connected with the second sliding block, the second sliding block is fixed on the frame, the lower portion of the locating frame is equipped with the strip shape locating hole parallel to the second sliding block, and the frame is equipped with the locating screw hole corresponding to the strip shape locating hole.

[0019] The locating plate ensures that the paper pit maintains the correct position and direction on the storage belt. Through the guidance of the locating plate, the paper pit can move stably along the predetermined path, ensuring that it can accurately fall into the paper pit stacking plate. By sliding the position of the locating frame on the second slide rail, the relative distance between the locating plate and the paper pit storage belt can be easily changed, thereby adapting to paper pits of different specifications and thicknesses. Once the locating frame is adjusted in place, its position can be fixed by tightening the locating screw, preventing position changes due to vibration or external forces.

[0020] The utility model will be further explained in detail in connection with the drawings and examples. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the whole structure schematic view of the embodiment of the utility model;

[0022] Figure 2 It is the side schematic view of the embodiment of the utility model;

[0023] Figure 3 It is the structure schematic view of the pit paper stack board of the embodiment of the utility model;

[0024] Figure 4 It is the partial structure explosion schematic view of the pit paper transport belt of the embodiment of the utility model;

[0025] Figure 5 It is the structure schematic view of the positioning plate of the embodiment of the utility model.

[0026] Face paper transport belt 1, pit paper storage belt 2, pit paper stack board 3, pit paper transport belt 4, strip-shaped paper transport groove 5, lower fixed plate 6, paper separating push block 7, first air cylinder 8, first sliding rail 9, first sliding block 10, second air cylinder 11, roller 12, paper pressing plate 13, paper pressing wheel 14, paper separating cutter 15, paper outlet pressing wheel 16, swing arm 17, second mounting shaft 18, pit paper limiting plate 19, support plate 20, second screw rod 21, pit paper sensor 22, positioning plate 23, positioning frame 24, second sliding rail 25, strip-shaped positioning hole 26. DETAILED DESCRIPTION

[0027] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor are within the protection scope of the utility model.

[0028] As Figures 1 to 5The paperboard conveying device shown, including a rack and a face paper conveying belt 1 mounted on the rack, the face paper conveying belt 1 is linked with a first belt drive assembly, a pit paper storage belt 2 is arranged above the face paper conveying belt 1, the pit paper storage belt 2 is linked with a second belt drive assembly, the pit paper storage belt 2 is parallel to the face paper conveying belt 1, an end of the pit paper storage belt 2 is provided with a pit paper stacking plate 3, the pit paper stacking plate 3 is lower than the pit paper storage belt 2, an end of the pit paper stacking plate 3 away from the pit paper storage belt 2 is provided with a pit paper conveying belt 4, the pit paper conveying belt 4 is linked with a third belt drive assembly, a middle of the pit paper stacking plate 3 is provided with a strip-shaped paper conveying groove 5 arranged along the conveying direction of the pit paper storage belt 2, an end of the strip-shaped paper conveying groove 5 towards the pit paper storage belt 2 is provided with a paper separating pushing block 7, an end of the strip-shaped paper conveying groove 5 towards the pit paper conveying belt 4 is provided with a paper separating cutter 15 distributed above the pit paper stacking plate 3, the paper separating pushing block 7 is linked with a first driving mechanism, the first driving mechanism can drive the paper separating pushing block 7 to reciprocate towards the strip-shaped paper conveying groove 5. The first belt drive assembly drives the face paper conveying belt 1 to continuously convey face paper. The pit paper is placed on the pit paper storage belt 2 in advance, the pit paper storage belt 2 is driven by the second belt drive assembly, so that the pit paper can be smoothly moved to the position of the pit paper stacking plate 3. When the pit paper is conveyed from the pit paper storage belt 2 and falls on the pit paper stacking plate 3, the first driving mechanism starts to work, drives the paper separating pushing block 7 to move towards the pit paper, the paper separating pushing block 7 pushes the pit paper at the bottom of the pit paper stacking plate 3 to move forward, at the same time, the gap between the paper separating cutter 15 arranged at the front end and the pit paper stacking plate 3 is accurately designed, only one paper can pass through, so as to ensure that when the paper separating pushing block 7 pushes the pit paper, only the single pit paper at the bottom can be separated and pushed to the pit paper conveying belt 4, and other pit papers continue to stay on the stacking plate, waiting for the next separation. The pit paper conveying belt 4 drags the separated single pit paper to the next process.

[0029] The first driving mechanism comprises a lower fixed plate 6, the middle part of a paper separating push block 7 is hinged to the lower fixed plate 6, one end of the paper separating push block 7 faces the strip-shaped paper conveying groove 5, the other end is connected with a first air cylinder 8, the body of the first air cylinder 8 is hinged to the lower fixed plate 6; the lower part of the lower fixed plate 6 is connected with a first sliding block 10 through a first sliding rail 9, the first sliding block 10 is fixed to the rack, the end part of the lower fixed plate 6 is connected with a second air cylinder 11, the body of the second air cylinder 11 is fixed to the rack. After the pit paper is transported from the pit paper storage belt 2 and falls on the pit paper stacking plate 3, the system detects the existence of the pit paper and triggers the first driving mechanism to start working. First, the piston rod of the first air cylinder 8 extends, pushes one end of the paper separating push block 7, the paper separating push block 7 swings around the middle part (because the middle part is hinged to the lower fixed plate 6), thereby pushing the paperboard at the bottom to move forward, so it can be known that the paper separating push block 7 will not push for a long distance, at this time, even if two or more are pushed, due to the re-separation of the paper separating knife 15 in front and the fact that the pit paper conveying belt 4 only drags the lowermost pit paper to move, it can ensure that a single pit paper is accurately separated, which has excellent accuracy. The second air cylinder 11 and the first sliding rail 9 are used to adjust the position of the lower fixed plate 6, so as to better adapt to different specifications and types of paperboard, and the position adjustment is completed before the paper separating work is carried out.

[0030] A plurality of groups of spaced rollers 12 are arranged on both sides of the strip-shaped paper conveying groove 5. The friction between the lowermost pit paper and the pit paper stacking plate 3 is reduced, which better assists the paper separating push block 7 to push the lowermost pit paper to move forward, and also facilitates the pit paper conveying belt 4 to drag the lowermost pit paper.

[0031] Two groups of symmetrical paper pressing plates 13 are arranged above the pit paper conveying belt 4, a group of paper pressing wheels 14 are arranged above both ends of the pit paper conveying belt 4, the paper pressing wheels 14 are distributed between the two groups of paper pressing plates 13 and are hinged to a first mounting shaft, both ends of the first mounting shaft are fixed to the paper pressing plates 13. The paper pressing wheels 14 are hinged to the first mounting shaft and are distributed between the two groups of paper pressing plates 13, which plays a role in pressing the pit paper and assisting in conveying. When the pit paper moves on the conveying belt, the paper pressing wheels 14 will gently press on it, ensuring that it closely adheres to the conveying belt and remains stable, avoiding wrinkles or left-right deviation of the pit paper.

[0032] The end of the pit paper conveying belt 4 away from the paper separating knife 15 is also provided with two groups of symmetrically distributed paper outlet pressing wheels 16, the paper outlet pressing wheels 16 are hinged with swing arms 17, the end of the swing arm 17 away from the paper outlet pressing wheel 16 is provided with a connecting hole, the connecting hole is transitionally matched with a second mounting shaft 18, the two ends of the second mounting shaft 18 are respectively fixed on the paper pressing plate 13. The paper outlet pressing wheel 16 presses the pit paper that is about to leave the conveying belt, preventing it from relaxing or jumping due to lack of support. At the same time, the paper outlet pressing wheel 16 also plays a guiding role, ensuring that the pit paper can leave the conveying belt according to the predetermined path and direction. By changing the swing angle and position of the swing arm 17, the pressure of the paper outlet pressing wheel 16 can be adjusted, so that the paper outlet pressing wheel 16 can be flexibly adjusted according to the thickness, hardness and conveying speed of the paper and other factors, to ensure the best pressing effect and paper stability. The swing arm 17 is transitionally matched with the second mounting shaft 18, when the angle of the swing arm 17 does not need to be adjusted, the swing arm 17 can stably maintain the working angle; when the angle of the swing arm 17 needs to be adjusted, the angle of the swing arm 17 can be changed by applying a larger force or using a wrench, which is convenient to operate.

[0033] The rack is also provided with pit paper limiting plates 19 symmetrically distributed on both sides of the strip-shaped paper conveying groove 5, each group of pit paper limiting plates 19 is respectively linked with a support plate 20, a second lead screw 21 is arranged between the two groups of support plates 20, the second lead screw 21 is provided with two groups of symmetrically distributed threaded segments, each group of support plates 20 is linked with the second lead screw 21 through a group of threaded segments; a signal hole is arranged through a group of pit paper limiting plates 19, and a pit paper sensor 22 for detecting pit paper is arranged at the signal hole. The pit paper limiting plate 19 limits the lateral movement of the pit paper during conveying, ensuring that it stably moves along the predetermined path. Through the linkage design of the support plate 20 and the second lead screw 21, the position of the pit paper limiting plate 19 can be adjusted according to the specifications and thickness of the pit paper. The pit paper sensor 22 is used to detect the presence and position of the pit paper.

[0034] A positioning plate 23 is arranged above the pit paper storage belt 2, the positioning plate 23 is arranged along the direction parallel to the conveying direction of the pit paper storage belt 2, and the positioning plate 23 is connected with a positioning frame 24, the positioning frame 24 is connected with a second sliding rail 25, the second sliding rail 25 is arranged along the direction perpendicular to the conveying direction of the pit paper storage belt 2, the second sliding rail 25 is slidably connected with a second sliding block, the second sliding block is fixed on the rack, and a strip-shaped positioning hole 26 parallel to the second sliding block is arranged below the positioning frame 24. The rack is provided with a positioning screw hole corresponding to the strip-shaped positioning hole 26. The positioning plate 23 ensures that the pit paper is kept in the correct position and direction on the storage belt. Under the guidance of the positioning plate 23, the pit paper can stably move along the predetermined path and accurately fall into the pit paper stacking plate 3. By sliding the position of the positioning frame 24 on the second sliding rail 25, the relative distance between the positioning plate 23 and the pit paper storage belt 2 can be easily changed to adapt to pit papers of different specifications and thicknesses. Once the positioning frame 24 is adjusted in place, the position can be fixed by tightening the positioning screw to prevent position changes due to vibration or external forces.

[0035] The working principle of the embodiment is as follows: The face paper conveying belt 1 sequentially and orderly conveys the face paper. After the pit paper is conveyed from the pit paper storage belt 2 and falls onto the pit paper stacking plate 3, the first air cylinder 8 is extended to push one end of the paper separating push block 7, the paper separating push block 7 swings around the middle part (because the middle part is hinged to the lower fixed plate 6), thereby pushing the bottommost paperboard to move forward until the bottommost paperboard is in contact with the pit paper conveying belt 4, and the pit paper conveying belt 4 drives the bottommost paperboard to continue moving forward. The single pit paper is separated and sequentially conveyed.

[0036] The embodiment has the following advantages: (1) The face paper conveying belt 1 sequentially and orderly conveys the face paper, and the face paper is sequentially and orderly laid in a single sheet state; the pit paper conveying belt 4 sequentially and orderly conveys the pit paper, and the pit paper is accurately separated from the pile by the pit paper stacking plate 3, the paper separating knife 15, the paper separating push block 7, and the driving block, and is sequentially conveyed to the pit paper conveying belt 4, realizing automatic conveying of the pit paper and the face paper, reducing manual intervention, and improving production efficiency. (2) Precise separation: the cooperation of the paper separating push block 7 and the paper separating knife 15 ensures that only a single pit paper is separated from the pit paper pile each time, avoiding the situation that multiple pit papers are pushed at the same time. (3) The pit paper storage belt 2 can not only realize orderly conveying of the pit paper pile, but also can stack a large amount of pit paper, without the need for multiple and frequent stacking of the pit paper. The position of the pit paper stacking plate 3 is lower than that of the pit paper storage belt 2, which can better provide better working conditions for paper separating work and avoid the influence of the pit paper storage belt 2 on paper separating work. (4) The pit paper storage belt 2 and the face paper conveying belt 1 are parallel to each other, regardless of whether the paper box is a rectangular box or a paper box of other shapes, as long as the directions of the face paper and the pit paper are kept consistent when the operator feeds the material, the operation is convenient.

Claims

1. A paperboard conveying device, comprising a frame and a face paper conveying belt mounted on the frame, the face paper conveying belt being linked with a first belt drive assembly, a toilet paper storage belt being arranged above the face paper conveying belt, the toilet paper storage belt being linked with a second belt drive assembly, characterized in that: The pit paper storage belt is parallel to the surface paper conveying belt, the end of the pit paper storage belt is provided with a pit paper stacking plate, the pit paper stacking plate is lower than the pit paper storage belt, the end of the pit paper stacking plate away from the pit paper storage belt is provided with a pit paper conveying belt, the pit paper conveying belt is linked with a third belt transmission assembly, the middle of the pit paper stacking plate is provided with a strip-shaped paper conveying groove arranged along the conveying direction of the pit paper storage belt, the end of the strip-shaped paper conveying groove away from the pit paper storage belt is provided with a paper separating push block, the end of the strip-shaped paper conveying groove away from the pit paper conveying belt is provided with a paper separating cutter distributed above the pit paper stacking plate, the paper separating push block is linked with a first driving mechanism, and the first driving mechanism can drive the paper separating push block to reciprocate towards the strip-shaped paper conveying groove.

2. The paperboard transport of claim 1, wherein: The first driving mechanism comprises a lower fixed plate, the middle of the paper separating push block is hinged to the lower fixed plate, one end of the paper separating push block is towards the strip-shaped paper conveying groove, the other end is linked with a first air cylinder, and the body of the first air cylinder is hinged to the lower fixed plate; the lower side of the lower fixed plate is linked with a first sliding block through a first sliding rail, the first sliding block is fixed to the rack, and the end of the lower fixed plate is linked with a second air cylinder, and the body of the second air cylinder is fixed to the rack.

3. The paperboard transport apparatus of claim 2, wherein: A plurality of groups of spaced rollers are distributed on both sides of the strip-shaped paper conveying groove.

4. A paperboard transport arrangement according to any one of claims 1 to 3, characterized in that: Two groups of symmetrical paper pressing plates are arranged above the pit paper conveying belt, a group of paper pressing wheels are arranged above both ends of the pit paper conveying belt, the paper pressing wheels are distributed between the two groups of paper pressing plates, and the paper pressing wheels are hinged to a first mounting shaft, and both ends of the first mounting shaft are fixed to the paper pressing plates.

5. The paperboard transport apparatus of claim 4, wherein: Two groups of symmetrical paper outlet pressing wheels are arranged at the end of the pit paper conveying belt away from the paper separating cutter, the paper outlet pressing wheels are hinged to a swing arm, the end of the swing arm away from the paper outlet pressing wheels is provided with a connecting hole, the connecting hole is transitionally matched with a second mounting shaft, and both ends of the second mounting shaft are fixed to the paper pressing plates.

6. A paperboard transport arrangement according to any one of claims 1 to 3, characterized by: The rack is also provided with pit paper limiting plates symmetrically distributed on both sides of the strip-shaped paper conveying groove, each group of pit paper limiting plates is linked with a support plate, a second lead screw is arranged between the two groups of support plates, two groups of symmetrical threaded segments are arranged on the second lead screw, and each group of support plates is linked with the second lead screw through a group of threaded segments; a signal hole penetrates through a group of pit paper limiting plates, and a pit paper sensor for detecting pit paper is arranged at the signal hole.

7. A paperboard transport arrangement according to any one of claims 1 to 3, characterized by: A positioning plate is arranged above the pit paper storage belt, the positioning plate is arranged along the conveying direction parallel to the pit paper storage belt, and the positioning plate is linked with a positioning frame, the positioning frame is linked with a second sliding rail, the second sliding rail is arranged along the direction perpendicular to the conveying direction of the pit paper storage belt, the second sliding rail is slidingly matched with a second sliding block, the second sliding block is fixed to the rack, a strip-shaped positioning hole parallel to the second sliding block is arranged below the positioning frame, and a positioning screw hole corresponding to the strip-shaped positioning hole is arranged on the rack.

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