Semi-suction paper feeding roller and paper turning device

Abstract

The invention discloses a semi-suction paper feeding roller and a paper turning device, wherein the semi-suction paper feeding roller comprises a rotating roller, a distribution plate and an air hood, the rotating roller is horizontally arranged in the left and right directions, and a rotating shaft is coaxially fixedly provided in the middle of the rotating roller, and a plurality of channels are concavely provided at the circumferential edge of the rotating roller at uniform intervals. Each channel is provided with suction holes that penetrate the roller surface of the rotating roller at uniform intervals along its length direction. The semi-suction paper feeding roller and the paper turning device are coaxially mounted on the rotating shaft and fit with the left side of the rotating roller, and the open ends of the plurality of channels are blocked. The distribution plate is provided with a plurality of suction holes that penetrate left and right, and when the rotating roller rotates relative to the distribution plate, each channel can be rotated to sequentially penetrate the plurality of suction holes. The air hood is arranged at a position where the suction holes are provided on the left side of the distribution plate, and the air hood and the distribution plate jointly enclose a chamber, and the plurality of suction holes are all communicated with the chamber. The air hood is provided with at least one negative pressure interface for communicating with a negative pressure device. The structure is simple, and paper feeding and turning are smooth.

Description

Technical Field

[0001] The invention belongs to the field of inkjet printing equipment, and in particular relates to a semi-suction paper feeding roller and a paper turning device. Background Art

[0002] Currently, digital blueprint printing devices usually require double-sided printing when printing, and a flipping device is required for double-sided printing. However, the flipping efficiency of the existing flipping device is low and paper jams are prone to occur, that is, the flipping is not smooth. Summary of the Invention

[0003] In order to solve the above technical problems, one of the objectives of the present invention is to provide a semi-suction paper feeding roller with a simple structure and capable of realizing suction-type paper feeding and flipping.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the present invention is as follows: a semi-suction paper feeding roller, comprising a rotating roller, a distribution plate and an air cover, the rotating roller is horizontally arranged in the left and right directions, and a rotating shaft is coaxially fixed to the middle of the rotating roller, and a plurality of channels are concavely provided at the left edge of the rotating roller at uniform circumferential intervals, each of the channels extends to the right side close to the rotating roller, and each of the channels is uniformly spaced along its length direction with suction holes that pass through the roller surface of the rotating roller, the distribution plate is a circular plate, which is coaxially rotatably mounted on the rotating shaft and fits with the left side of the rotating roller, and The open ends of the multiple channels are sealed, and the distribution plate is provided with multiple suction holes running through the left and right. The multiple suction holes are distributed in an arc shape on the distribution plate, and when the roller rotates relative to the distribution plate, each channel can be rotated to pass through the multiple suction holes in sequence. The wind hood is arranged at the position where the suction holes are provided on the left side of the distribution plate, and the wind hood and the distribution plate are jointly enclosed to form a chamber, and the multiple suction holes are all connected to the chamber, and the wind hood is provided with at least one negative pressure interface for connecting with the negative pressure equipment.

[0005] The beneficial effect of the above technical solution is that: when the distribution plate remains stationary and the roller rotates, the negative pressure interface of the wind hood is sucked in by the negative pressure equipment, resulting in negative pressure inside the wind hood, and the roller rotates to the channel connected to the suction port, which is all negative pressure. At this time, the corresponding suction holes are all under negative pressure and adsorb the paper. After the roller rotates to the channel leaving the distribution plate, the corresponding channel returns to normal pressure and loses the ability to adsorb paper. At this time, the paper can be delivered.

[0006] In the above technical solution, the center angle of the arc where the multiple air suction holes are distributed is 180°.

[0007] The beneficial effect of the above technical solution is that the paper can be turned over just right.

[0008] In the above technical solution, a plurality of annular grooves are coaxially concavely provided on the roller surface along the left-right direction, and the suction holes passing through one end of the roller are all located in the annular grooves. The multiple suction holes on each of the channels correspond one-to-one to the multiple annular grooves, and each of the suction holes passes through one end of the roller surface and is located in the annular groove. The suction holes in each annular groove are evenly distributed circumferentially.

[0009] The beneficial effects of the above technical solution are: its structure is simple, and the paper can be smoothly adsorbed on the roller surface of the rotating roller while preventing the paper from being sucked and broken.

[0010] A second object of the present invention is to provide a turning device capable of turning over paper.

[0011] In order to achieve the above-mentioned purpose, another technical solution of the present invention is as follows: a paper turning device, comprising a conveyor belt 2, a first driving member 3, an arc-shaped cover plate 5, two turning rollers 4, two support plates 6 and the semi-suction paper feeding roller 1 as described above, the two support plates 6 are vertically arranged in the front-to-back direction, and are spaced apart in the left-to-right direction, the semi-suction paper feeding roller 1 is placed on the front side between the two support plates 6, and the two ends of the rotating shaft 111 are respectively rotatably connected to the two support plates 6, the distribution plate 12 is fixedly connected to the support plate 6 close to it, and the arc-shaped arc opening where the multiple suction holes 121 are distributed faces backward, the two turning rollers 4 are horizontally arranged between the two support plates 6 in the left-to-right direction, And they are distributed at intervals in the up and down directions, both ends of the two rotating shafts 111 are rotatably connected to the two support plates 6, the conveyor belt 2 is placed between the two support plates 6, and the roller 11 and the two steering rollers 4 are both located in the conveyor belt 2, and together stretch the conveyor belt 2, the conveyor belt 2 is covered with holes running through it, the first driving member 3 is installed on any one of the support plates 6, and its driving end is transmission-connected to one end of the rotating shaft 111, the arc mouth of the arc cover plate 5 faces backward, and is covered on the front side of the roller 11, and its two sides are fixedly connected to the two support plates 6, and there is an arc gap between the arc cover plate 5 and the conveyor belt 2, and the arc gap is used for paper to pass through.

[0012] The beneficial effect of the above technical solution is that its structure is simple, so that paper can be transported from bottom to top through the conveyor belt and turned over. Among them, when the semi-suction paper feeding roller rotates, the channel at the position where it contacts the conveyor belt is negative pressure, so when the conveyor belt rotates to this position, it can absorb the paper and transport the paper upward to the turning surface.

[0013] The above technical solution also includes two suction plates, one side of which is covered with adsorption holes, and the suction plate has an air pipe interface connected to multiple adsorption holes. The two suction plates are arranged between the two support plates and are located inside the conveyor belt, and are spaced apart up and down in the conveyor belt. The upper suction plate is arranged between the rotating roller and the steering roller located above, and its side with adsorption holes faces upward and fits with the conveyor belt. The lower suction plate is arranged between the rotating roller and the steering roller located below, and its side with adsorption holes faces downward and fits with the conveyor belt. The air pipe interface on the suction plate is used to connect with the negative pressure equipment.

[0014] The beneficial effect of the above technical solution is that the paper can be adsorbed on the conveyor belt at the positions of the two suction plates.

[0015] The above technical solution also includes a tensioning roller, which is horizontally arranged between the two steering rollers in the left and right directions and is located outside the conveyor belt. The two ends of the tensioning roller are respectively rotatably connected to a connecting block, and the two connecting blocks are connected to two support plates. The positions of the two connecting blocks on the two support plates can be adjusted forward and backward to adjust the tension of the conveyor belt.

[0016] The beneficial effect of the above technical solution is that the tension of the conveyor belt can be adjusted in time to avoid loose conveyor belt and poor paper feeding.

[0017] The above technical solution also includes the two adjusting rods, the two connecting blocks are slidably mounted on the two support plates, the two connecting blocks are provided with screw holes running through the front and back, and a protrusion is provided on the two support plates corresponding to the front or rear of the connecting blocks. The two adjusting rods are horizontally arranged along the front and back directions and correspond one-to-one with the two protrusions, each adjusting rod passes through the corresponding protrusion along the front and back and is rotatably connected to it, and an external thread is provided on one end of each adjusting rod close to the connecting block on the same side, and passes through the screw hole on the connecting block on the same side and is threadedly connected to it, and the adjusting rod is rotated to drive the corresponding connecting block to move along the front and back directions.

[0018] The beneficial effects of the above technical solution are that it is easy to adjust and can fix and limit the connection block.

[0019] The above technical solution also includes a paper feed assembly and a paper discharge assembly, both of which are arranged between the two support plates, and the paper discharge port of the paper feed assembly faces forward and is close to the bottom of the steering roller located below, which is used to transport the paper from back to front to the conveyor belt, and the conveyor belt drives the paper to bypass the rotating roller and be transported from bottom to top and turned over. The paper feed of the paper discharge assembly faces forward and is close to the steering roller located above. The conveyor belt delivers the paper to the paper feed of the paper discharge assembly, and the paper discharge assembly delivers the paper.

[0020] The beneficial effects of the above technical solution are: its structure is simple and its degree of integration is high.

[0021] The paper feeding assembly in the above technical solution includes two conveying rollers, a first paper pressing member, a second driving member and multiple first conveying belts, the two conveying rollers are horizontally arranged at the lower end between the two support plates in the left and right directions, and are spaced apart in the front and rear directions, below the rotating roller located in the front, the two conveying rollers are each recessed with multiple annular belt grooves along their length directions, and the number of belt grooves on the two conveying rollers is the same and corresponds one to one, and the corresponding two belt grooves are aligned in the front and rear directions, the multiple belt grooves on any one of the conveying rollers correspond one to one with the multiple first conveying belts, the multiple first conveying belts are placed between the two support plates, and the two conveying rollers pass through the loops of the multiple first conveying belts, and the corresponding two belt grooves jointly open a first The conveyor belt, and the outer ring of the first conveyor belt protrudes from the belt groove, the first paper pressing member is horizontally arranged between the two support plates and located behind the steering roller below, and the lower end surface of the first paper pressing member is embedded with multiple groups of ball groups spaced apart along the left and right directions, and each group of the ball groups has multiple first balls spaced apart along the front and back directions, and multiple groups of the ball groups correspond one-to-one to multiple first conveyor belts, and the multiple first balls in each group of the ball groups are located directly above the corresponding first conveyor belt and fit with the corresponding first conveyor belt, the second driving member is installed on any one of the support plates, and its driving end is transmission-connected to any one of the conveyor rollers, and the paper is conveyed from above the multiple first conveyor belts and from back to front to the bottom of the conveyor belt.

[0022] The beneficial effect of the above technical solution is that the paper can be conveniently transported to the bottom of the steering roller below, so that the paper can be adsorbed on the conveyor belt, turned over and transported.

[0023] The paper discharge assembly 92 in the above technical solution includes a correction groove 921, a second conveyor belt 922, a second paper pressing member 923, a third driving member 924, two second rotating shafts 925 and two pulleys 926. The two second rotating shafts 925 are horizontally arranged between the two support plates 6 in the left and right directions, and one end or both ends thereof are rotatably connected to the support plates on the corresponding sides. The correction groove 921 is arranged on one side above the two second rotating shafts 925 in the front-to-back direction, the notch of the correction groove 921 faces the other side, and the front and back of the correction groove 921 are through-through, the groove depth gradually narrows from front to back, and the notch side is flush in the front-to-back direction, and the two pulleys 926 are coaxially fixed on the two second rotating shafts 925, and both are close to the groove of the correction groove 921. The second conveyor belt 922 is sleeved on the two pulleys 926, and the second paper pressing member 923 is suspended above the second conveyor belt 922, and the lower end of the second paper pressing member 923 is embedded with a plurality of second balls 9231 that fit with the upper end of the second conveyor belt 922 at intervals along the front-to-back direction, and the horizontal height of the upper end of the second conveyor belt 922 is between the upper and lower groove side walls of the correction groove 921, the third driving member 924 is transmission-connected to one end of any one of the second rotating shafts 925, and a plurality of support plates 927 are provided between the two second rotating shafts 925, which are vertically arranged along the front-to-back direction and spaced apart along the left-to-right direction, and the upper ends of the plurality of support plates 927 are flush with the upper end of the second conveyor belt 922.

[0024] The beneficial effect of the above technical solution is that the paper can be conveniently delivered and the paper can be corrected by the correction groove when being delivered, so that the side of the paper close to the correction groove is flush when being delivered. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a simplified structural diagram of the roller in Example 1 of the present invention;

[0026] Figure 2 is a cross-sectional view of the roller described in Example 1 of the present invention;

[0027] Figure 3 This is an assembly diagram of the roller and distribution plate described in Example 1 of the present invention;

[0028] Figure 4 This is an assembly diagram of the semi-suction paper feed roller described in Example 1 of the present invention;

[0029] Figure 5 This is an elevation view of the paper turning device according to embodiment 2 of the present invention;

[0030] Figure 6 This is a partial elevation view of the paper turning device according to Example 2 of the present invention;

[0031] Figure 7 Another partial elevation view of the paper turning device according to embodiment 2 of the present invention;

[0032] Figure 8 This is an exploded view of the arc-shaped cover plate relative to the rotating roller according to Example 2 of the present invention;

[0033] Figure 9 Another elevation view of the paper turning device according to embodiment 2 of the present invention;

[0034] Figure 10 A top view of the air suction plate in Example 2 of the present invention;

[0035] Figure 11 2 is a cross-sectional view of the air suction plate described in Example 2 of the present invention;

[0036] Figure 12 This is a diagram showing the coordination of the connecting block and the adjusting rod on the support plate in Example 2 of the present invention;

[0037] Figure 13 This is an exploded view of the paper turning device in Example 2 of the present invention;

[0038] Figure 14 A partial top view of the paper discharge assembly in Example 2 of the present invention;

[0039] Figure 15 This is a side view of the second conveyor belt and the second paper pressing member in Example 2 of the present invention.

[0040] In the figure: 1 semi-suction paper feeding roller, 11 rotating roller, 111 rotating shaft, 112 channel, 113 suction hole, 114 ring groove, 12 distribution plate, 121 suction hole, 13 wind cover, 131 negative pressure interface, 2 conveyor belt, 3 first driving member, 4 steering roller, 5 arc cover plate, 6 support plate, 7 suction plate, 71 adsorption hole, 72 air pipe interface, 8 tensioning roller, 81 connecting block, 82 adjusting rod, 91 paper feeding assembly, 911 conveying roller, 912 first paper pressing member, 9121 first ball bearing, 913 second driving member, 914 first conveying belt, 92 paper discharging assembly, 921 deviation correction groove, 922 second conveying belt, 923 second paper pressing member, 9231 second ball bearing, 924 third driving member, 925 second rotating shaft, 926 pulley, 927 support plate. DETAILED DESCRIPTION

[0041] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples provided are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. The following paragraphs describe the present invention in more detail by way of example with reference to the accompanying drawings. It should be noted that the drawings are greatly simplified and not to exact scale, and are intended solely to facilitate and clearly illustrate the embodiments of the present invention.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0043] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0044] Example 1

[0045] like Figure 1-Figure 4As shown, this embodiment provides a semi-suction paper feeding roller, including a roller 11, a distribution plate 12 and an air cover 13, the roller 11 is horizontally arranged in the left and right directions, and a rotating shaft 111 is coaxially fixed to the middle part of the roller 11, and a plurality of channels 112 are evenly spaced circumferentially at the left edge of the roller 11, each of the channels 112 extends to the right side close to the roller 11, and each of the channels 112 is evenly spaced along its length direction. A suction hole 113 that passes through the roller surface of the roller 11 is provided, and the distribution plate 12 is a circular plate, which is coaxially rotatably mounted on the rotating shaft 111 and fits with the left side of the roller 11, and blocks the open ends of the plurality of channels 112, and a plurality of suction holes 121 that pass through the left and right are provided on the distribution plate 12, and the plurality of suction holes 121 are distributed in an arc shape on the distribution plate 12, and the rotating When the roller 11 rotates relative to the distribution plate 12, each of the channels 112 can be rotated to sequentially connect with the plurality of suction holes 121. The hood 13 is provided at the position where the suction hole 121 is provided on the left side of the distribution plate 12, and the hood 13 and the distribution plate 12 together form a chamber, and the plurality of suction holes 121 are all connected with the chamber. The hood 13 is provided with at least one negative pressure interface 131 for connecting with a negative pressure device. In this way, when the distribution plate remains stationary and the roller rotates, the negative pressure interface of the hood is sucked by the negative pressure device, resulting in a negative pressure inside the hood. When the roller rotates until the channel connected with the suction port is negatively pressurized, the corresponding suction holes are negatively pressurized and absorb the paper. After the roller rotates until the channel leaves the distribution plate, the corresponding channel returns to normal pressure and loses the ability to absorb the paper. At this time, the paper can be delivered. The suction holes can be arc-shaped, and two adjacent suction holes are close to each other. Each suction hole can be connected with multiple channels at the same time. See for details. Figure 2 .

[0046] In the above technical solution, the arc center angle of the arc where the multiple suction holes 121 are distributed is 180°, so that the paper can be turned over just right.

[0047] In the above technical solution, a plurality of annular grooves 114 are coaxially concavely provided on the roller surface of the rotating roller 11 at intervals in the left-right direction. The suction holes 113 pass through one end of the rotating roller 11 and are located in the annular grooves 114. The multiple suction holes 113 on each of the channels 112 correspond one-to-one to the multiple annular grooves 114, and one end of each of the suction holes 113 passes through the roller surface of the rotating roller 11 and is located in the annular groove 114. The suction holes 113 in each of the annular grooves 114 are evenly distributed in the circumferential direction. The structure is simple, and the paper can be smoothly adsorbed on the roller surface of the rotating roller while preventing the paper from being sucked apart.

[0048] Example 2

[0049] like Figure 5-8As shown, this embodiment provides a paper turning device, including a conveyor belt 2, a first driving member 3, an arc-shaped cover plate 5, two steering rollers 4, two support plates 6 and the semi-suction paper feeding roller 1 as described in Example 1, the two support plates 6 are vertically arranged in the front-to-back direction, and are spaced apart in the left-right direction, the semi-suction paper feeding roller 1 is placed on the front side between the two support plates 6, and the two ends of the rotating shaft 111 are respectively rotatably connected to the two support plates 6, the distribution plate 12 is fixedly connected to the support plate 6 close to it, and the arc-shaped arc opening where the multiple suction holes 121 are distributed faces backward, the two steering rollers 4 are horizontally arranged between the two support plates 6 in the left-right direction, and are spaced apart in the up-down direction, the two ends of the rotating shaft 111 are rotatably connected to the two support plates 6, the conveyor belt 2 is placed on the two support plates 6, and the turning roller 11 and the two turning rollers 4 are all located in the conveyor belt 2, and together stretch the conveyor belt 2, and the conveyor belt 2 is covered with holes running through it, and the first driving member 3 is installed on any one of the support plates 6, and its driving end is transmission-connected to one end of the rotating shaft 111, the arc opening of the arc cover plate 5 faces backward, and is covered on the front side of the turning roller 11, and its two sides are connected and fixed to the two support plates 6, and there is an arc gap between the arc cover plate 5 and the conveyor belt 2, and the arc gap is used for paper to pass through, and its structure is simple, so that paper can be transported from bottom to top through the conveyor belt, and the paper can be turned over, wherein, when the semi-suction paper feeding roller rotates, the channel at the position where it is in contact with the conveyor belt is negative pressure, so when the conveyor belt rotates to this position, it can absorb the paper and transport the paper upward to the turning side.

[0050] like Figure 10-11 As shown, the above technical solution also includes two suction plates 7, one side of the suction plate 7 is covered with adsorption holes 71, and the suction plate 7 has an air pipe interface 72 connected to multiple adsorption holes 71, the two suction plates 7 are arranged between the two support plates 6, and are located in the conveyor belt 2, and are spaced apart in the upper and lower parts of the conveyor belt 2, the upper suction plate 7 is arranged between the rotating roller 11 and the steering roller 4 located above, and the side with the adsorption holes 71 faces upward and fits with the conveyor belt 2, the lower suction plate 7 is arranged between the rotating roller 11 and the steering roller 4 located below, and the side with the adsorption holes 71 faces downward and fits with the conveyor belt 2, the air pipe interface 72 on the suction plate 7 is used to connect with the negative pressure equipment, so that the paper can be adsorbed on the conveyor belt at the position of the two suction plates.

[0051] The above technical solution also includes a tensioning roller 8, which is horizontally arranged between the two steering rollers 4 in the left and right directions and is located outside the conveyor belt 2. The two ends of the tensioning roller 8 are respectively rotatably connected to a connecting block 81, and the two connecting blocks 81 are connected to the two support plates 6. The positions of the two connecting blocks 81 on the two support plates 6 can be adjusted forward and backward to adjust the tension of the conveyor belt 2. In this way, the tension of the conveyor belt can be adjusted in time to avoid loosening of the conveyor belt and causing poor paper feeding.

[0052] like Figure 12 As shown, the above technical solution also includes two adjusting rods 82, and the two connecting blocks 81 are slidably mounted on the two support plates 6. The two connecting blocks 81 are provided with screw holes that pass through them front and back. A protrusion is provided on the front or rear of the two support plates 6 corresponding to the connecting blocks 81. The two adjusting rods 82 are horizontally arranged in the front and back directions and correspond one-to-one with the two protrusions. Each adjusting rod 82 passes through the corresponding protrusion along the front and back and is rotatably connected to it. An external thread is provided on one end of each adjusting rod 82 close to the connecting block 81 on the same side, and passes through the screw hole on the connecting block 81 on the same side and is threadedly connected to it. The adjusting rod 82 is rotated to drive the corresponding connecting block 81 to move in the front and back directions. It is easy to adjust and the connecting block can be fixed and limited.

[0053] The above technical solution also includes a paper feed component 91 and a paper discharge component 92, and the paper feed component 91 and the paper discharge component 92 are both arranged between the two support plates 6, and the paper discharge port of the paper feed component 91 faces forward and is close to the bottom of the steering roller 4 located below, which is used to transport the paper from back to front to the conveyor belt 2, and the conveyor belt 2 drives the paper to bypass the rotating roller 11 and be transported from bottom to top and turned over. The paper feed of the paper discharge component 92 faces forward and is close to the steering roller 4 located above. The conveyor belt 2 delivers the paper to the paper feed of the paper discharge component 92, and the paper is delivered by the paper discharge component 92. It has a simple structure and a high degree of integration.

[0054] like Figure 9 and Figure 13As shown, the paper feeding assembly 91 in the above technical solution includes two conveying rollers 911, a first paper pressing member 912, a second driving member 913 and multiple first conveying belts 914, the two conveying rollers 911 are horizontally arranged at the lower end between the two support plates 6 in the left and right direction, and are spaced apart in the front and back direction, located below the rotating roller in the front, and the two conveying rollers 911 are both recessed with multiple annular belt grooves along their length directions, and the number of belt grooves on the two conveying rollers 911 is the same and corresponds one to one, and the corresponding two belt grooves are aligned in the front and back directions, the multiple belt grooves on any one of the conveying rollers 911 correspond one to one with the multiple first conveying belts 914, the multiple first conveying belts 914 are placed between the two support plates 6, and the two conveying rollers 911 pass through the loops of the multiple first conveying belts 914, the corresponding two belt grooves jointly support one first conveying belt 914, and the outer surface of the first conveying belt 914 The ring protrudes out of the belt groove, and the first paper pressing member 912 is horizontally arranged between the two support plates 6 and located behind the steering roller 4 below. A plurality of groups of ball groups are embedded on the lower end surface of the first paper pressing member 912, which are spaced apart along the left and right directions, and each group of the ball groups has a plurality of first balls 9121 spaced apart along the front and back directions, and the plurality of groups of the ball groups correspond one to one with the plurality of first conveyor belts 914. The plurality of first balls 9121 in each group of the ball groups are located directly above the corresponding first conveyor belt 914 and fit with the corresponding first conveyor belt 914. The second driving member 913 is installed on any one of the support plates 6, and its driving end is transmission-connected to any one of the conveyor rollers 911. The paper is conveyed from above the plurality of first conveyor belts 914 and from back to front to the bottom of the conveyor belt 2. In this way, the paper can be conveniently conveyed to the bottom of the steering roller below, so that the paper can be adsorbed on the conveyor belt for flipping and conveying.

[0055] like Figure 13-15As shown, the paper discharge assembly 92 in the above technical solution includes a correction groove 921, a second conveyor belt 922, a second paper pressing member 923, a third driving member 924, two second rotating shafts 925 and two pulleys 926. The two second rotating shafts 925 are horizontally arranged between the two support plates 6 in the left and right directions, and are spaced apart in the front and back directions behind the steering roller 4 located above. The correction groove 921 is arranged on one side above the two second rotating shafts 925 in the front and back directions, and the notch of the correction groove 921 faces the other side, and the front and back of the correction groove 921 are through-through, and its groove depth gradually narrows from front to back, and its notch side is flush in the front and back directions. The two pulleys 926 are coaxially fixed on the two second rotating shafts 925, and are both close to the notch of the correction groove 921 and aligned front and back. The second conveyor belt 922 is sleeved on On the two pulleys 926, the second paper pressing member 923 is suspended above the second conveyor belt 922, and the lower end of the second paper pressing member 923 is embedded with a plurality of second balls 9231 that fit with the upper end of the second conveyor belt 922 at intervals along the front-to-back direction, and the horizontal height of the upper end of the second conveyor belt 922 is between the upper and lower groove side walls of the correction groove 921, the third driving member 924 is transmission-connected to one end of any one of the second rotating shafts 925, and a plurality of support plates 927 that are vertically arranged along the front-to-back direction and spaced apart along the left-to-right direction are provided between the two second rotating shafts 925, and the upper ends of the plurality of support plates 927 are flush with the upper end of the second conveyor belt 922, so that the paper can be conveniently delivered and the paper can be corrected by the correction groove when it is delivered, so that the side of the paper close to the correction groove is flush when it is delivered.

[0056] The above description is only a preferred embodiment of the present invention and is 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 in the scope of protection of the present invention.

Claims

1. A paper turning device, characterized in that: The invention comprises a conveyor belt (2), a first driving member (3), an arc-shaped cover plate (5), two steering rollers (4), two supporting plates (6) and a semi-suction paper feeding roller (1), wherein the semi-suction paper feeding roller comprises a rotating roller (11), a distribution plate (12) and a wind cover (13), wherein the rotating roller (11) is horizontally arranged in the left-right direction, and a rotating shaft (111) is coaxially fixedly provided in the middle of the rotating roller (11), and a plurality of channels (112) are concavely provided at circumferential intervals on the left edge of the rotating roller (11), each of the channels (112) extending to the right side close to the rotating roller (11), and each of the channels (112) is uniformly spaced along its length direction and provided with suction holes (113) penetrating the roller surface of the rotating roller (11), and the distribution plate (12) is a circular plate, which is coaxially rotatably mounted on the rotating shaft (111) and is in contact with the left side of the rotating roller (11), and multiple channels (112) are concavely provided at circumferential intervals on the left edge of the rotating roller (11), each of the channels (112) extending to the right side close to the rotating roller (11), and each of the channels (112) is uniformly spaced along its length direction and is provided with suction holes (113) penetrating the roller surface of the rotating roller (11), and the distribution plate (12) is a circular plate, which is coaxially rotatably mounted on the rotating shaft (111) and is in contact with the left side of the rotating roller (11), and multiple channels (112) are concavely provided at circumferential intervals on the left edge of the rotating roller (11), and multiple channels (112) are concavely provided at circumferential intervals on the left side of the rotating roller (11), and multiple channels (112) are concavely The open ends of the channels (112) are blocked, the distribution plate (12) is provided with a plurality of suction holes (121) running through the left and right sides, the plurality of suction holes (121) are distributed in an arc shape on the distribution plate (12), and when the roller (11) rotates relative to the distribution plate (12), each of the channels (112) can be rotated to sequentially pass through the plurality of suction holes (121), the wind cover (13) is provided at a position on the left side of the distribution plate (12) where the suction holes (121) are provided, and the wind cover (13) and the distribution plate (12) are jointly enclosed to form a chamber, and the plurality of suction holes (121) are all connected to the chamber, and the wind cover (13) is provided with at least one negative pressure interface (131) for connecting to a negative pressure device; the arc center angle of the arc where the plurality of suction holes (121) are distributed is 180°;The two support plates (6) are both vertically arranged along the front-back direction and are spaced apart along the left-right direction. The semi-suction paper feeding roller (1) is placed at the front side between the two support plates (6), and the two ends of the rotating shaft (111) are respectively rotatably connected to the two support plates (6). The distribution plate (12) is fixedly connected to the support plate (6) adjacent to it, and the arc-shaped arc opening where the plurality of suction holes (121) are distributed faces backward. The two steering rollers (4) are horizontally arranged between the two support plates (6) along the left-right direction and are spaced apart along the up-down direction. The two ends of the rotating shaft (111) are both rotatably connected to the two support plates (6). The conveyor belt (2) is placed between the two support plates (6), and the rotating roller (11) and the two rotating rollers (11) are fixedly connected to the two support plates (6). The rollers (4) are all located in the conveyor belt (2) and together stretch the conveyor belt (2). The conveyor belt (2) is covered with holes running through it. The first driving member (3) is installed on any one of the support plates (6), and its driving end is transmission-connected to one end of the rotating shaft (111). The arc opening of the arc cover plate (5) faces backward and is covered on the front side of the rotating roller (11). Its two sides are connected and fixed to the two support plates (6). There is an arc gap between the arc cover plate (5) and the conveyor belt (2), and the arc gap is used for paper to pass through. A plurality of annular grooves (114) are coaxially concavely provided on the roller surface of the rotating roller (11) at intervals along the left and right directions. One end of the suction hole (113) running through the rotating roller (11) is located in the annular groove (114).

2. The paper turning device according to claim 1, characterized in that: The multiple suction holes (113) on each channel (112) correspond one-to-one to the multiple annular grooves (114), and one end of each suction hole (113) passes through the roller surface of the rotating roller (11) and is located in the annular groove (114), and the suction holes (113) in each annular groove (114) are evenly distributed in the circumferential direction.

3. The paper turning device according to claim 1, characterized in that: The invention also includes two suction plates (7), one side of the suction plate (7) is covered with adsorption holes (71), and the suction plate (7) has an air pipe interface (72) connected to the multiple adsorption holes (71). The two suction plates (7) are arranged between the two support plates (6) and are located in the conveyor belt (2). The suction plates (7) are spaced apart in the upper and lower parts of the conveyor belt (2). The suction plate (7) located above is arranged between the rotating roller (11) and the steering roller (4) located above, and the side with the adsorption holes (71) faces upward and is in contact with the conveyor belt (2). The suction plate (7) located below is arranged between the rotating roller (11) and the steering roller (4) located below, and the side with the adsorption holes (71) faces downward and is in contact with the conveyor belt (2). The air pipe interface (72) on the suction plate (7) is used to communicate with the negative pressure equipment.

4. The paper turning device according to claim 1, characterized in that: It also includes a tensioning roller (8), which is horizontally arranged between the two steering rollers (4) in the left-right direction and located outside the conveyor belt (2), and the two ends of the tensioning roller (8) are rotatably connected to a connecting block (81), and the two connecting blocks (81) are connected to the two support plates (6). The positions of the two connecting blocks (81) on the two support plates (6) can be adjusted forward and backward to adjust the tension of the conveyor belt (2).

5. The paper turning device according to claim 4, characterized in that: The invention also includes two adjusting rods (82), the two connecting blocks (81) are slidably mounted on the two supporting plates (6), the two connecting blocks (81) are provided with screw holes penetrating front and back, and a protrusion is provided on the two supporting plates (6) in front or rear of the corresponding connecting block (81), the two adjusting rods (82) are arranged horizontally along the front and back direction and correspond to the two protrusions one by one, each adjusting rod (82) penetrates the corresponding protrusion along the front and back direction and is rotatably connected to the protrusion, and an end of each adjusting rod (82) close to the connecting block (81) on the same side is provided with an external thread, and passes through the screw hole on the connecting block (81) on the same side and is threadedly connected to the protrusion, and the adjusting rod (82) is rotated to drive the corresponding connecting block (81) to move along the front and back direction.

6. The paper turning device according to claim 4 or 5, characterized in that: The paper feeding assembly (91) and the paper discharging assembly (92) are both arranged between the two support plates (6), and the paper discharging port of the paper feeding assembly (91) faces forward and is close to the bottom of the steering roller (4) located below, and is used to convey the paper from the back to the front to the conveyor belt (2), and the conveyor belt (2) drives the paper to bypass the rotating roller (11) and be conveyed from the bottom to the top and turned over, and the paper feeding port of the paper discharging assembly (92) faces forward and is close to the steering roller (4) located above, and the conveyor belt (2) delivers the paper to the paper feeding port of the paper discharging assembly (92), and the paper discharging assembly (92) delivers the paper.

7. The paper turning device according to claim 6, characterized in that: The paper feeding assembly (91) includes two conveying rollers (911), a first paper pressing member (912), a second driving member (913) and a plurality of first conveying belts (914), the two conveying rollers (911) are horizontally arranged at the lower end between the two support plates (6) along the left-right direction, and are spaced apart along the front-back direction, and are located below the front rotating roller, the two conveying rollers (911) are both spaced apart along the length direction thereof and are concavely provided with a plurality of annular belt grooves, and the number of belt grooves on the two conveying rollers (911) is the same and corresponds one to one, and the corresponding two belt grooves are aligned along the front-back direction, the plurality of belt grooves on any one of the conveying rollers (911) correspond one to one with the plurality of first conveying belts (914), the plurality of first conveying belts (914) are placed between the two support plates (6), and the two conveying rollers (911) pass through the loops of the plurality of first conveying belts (914), and the corresponding two belt grooves jointly support one first conveying belt ( 914), and the outer ring of the first conveyor belt (914) protrudes from the belt groove, the first paper pressing member (912) is horizontally arranged between the two support plates (6) and located behind the lower steering roller (4), and a plurality of groups of ball groups spaced apart along the left and right directions are embedded on the lower end surface of the first paper pressing member (912), and each group of the ball groups has a plurality of first balls (9121) spaced apart along the front and back directions, and the plurality of groups of the ball groups correspond one to one with the plurality of first conveyor belts (914), and the plurality of first balls (9121) in each group of the ball groups are located directly above the corresponding first conveyor belt (914) and fit with the corresponding first conveyor belt (914), the second driving member (913) is installed on any one of the support plates (6), and its driving end is transmission-connected to any one of the conveyor rollers (911), and the paper is conveyed from above the plurality of first conveyor belts (914) and from back to front to the bottom of the conveyor belt (2).

8. The paper turning device according to claim 6, characterized in that: The paper discharge assembly (92) includes a correction groove (921), a second conveying belt (922), a second paper pressing member (923), a third driving member (924), two second rotating shafts (925) and two pulleys (926). The two second rotating shafts (925) are horizontally arranged between the two support plates (6) in the left-right direction, and one end or both ends thereof are rotatably connected to the support plate on the corresponding side. The correction groove (921) is arranged on one side above the two second rotating shafts (925) in the front-to-back direction. The notch of the correction groove (921) faces the other side, and the correction groove (921) is through-through from front to back, and its groove depth gradually narrows from front to back, and its notch side is flush in the front-to-back direction. The two pulleys (926) are respectively coaxially fixed on the two second rotating shafts (925), and are both close to the notch of the correction groove (921) and The second conveying belt (922) is aligned front and back, and is sleeved on the two pulleys (926). The second paper pressing member (923) is suspended above the second conveying belt (922), and the lower end of the second paper pressing member (923) is embedded with a plurality of second balls (9231) that fit with the upper end of the second conveying belt (922) at intervals along the front-to-back direction, and the horizontal height of the upper end of the second conveying belt (922) is between the upper and lower groove side walls of the correction groove (921). The third driving member (924) is connected to one end of any one of the second rotating shafts (925) in a transmission manner, and a plurality of support plates (927) are arranged vertically along the front-to-back direction and spaced apart along the left-to-right direction between the two second rotating shafts (925), and the upper ends of the plurality of support plates (927) are flush with the upper end of the second conveying belt (922).

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