Paper feeding device and paper feeding machine

Abstract

The present invention discloses a paper feeding device and a paper feeding machine, comprising a first stand, a first bracket and a roller, wherein the first bracket is rotatably connected to the first stand via a roller, one end of the roller is connected to a first driving unit, the first driving unit is used to drive the first bracket to flip, a plurality of conveyor belts are arranged on the first stand, the conveyor belts are driven by a second driving unit, racks and moving seats are arranged on both sides of the first bracket, the two moving seats are rotatably connected to the same first transmission rod, first gears are sleeved at both ends of the first transmission rod, the first gears are meshed with the racks, and the first transmission rod is driven by a manual wheel. The present invention has the characteristics of fast paper feeding speed, high paper feeding stability and high paper feeding accuracy.

Description

Technical Field

[0001] The invention relates to the field of corrugated paper manufacturing equipment, in particular to a paper feeding device and a paper feeding machine. Background Art

[0002] The processing of corrugated paper usually requires a die-cutter, which uses a steel knife, a hardware mold, and a steel wire to apply a certain pressure through a knife plate to cut the printed product or cardboard into a certain shape. It is an important equipment for post-printing packaging processing and molding. When a traditional die-cutter is working, the cardboard is usually fed in manually, which is extremely inefficient and often results in inaccurate feeding of the cardboard, resulting in unsatisfactory finished products. In the prior art, mechanical equipment is also used to feed the paper of the die-cutter, but there are generally problems such as low paper feeding speed, insufficient paper feeding stability, and low paper feeding accuracy. Summary of the invention

[0003] The object of the present invention is to provide a paper feeding device and a paper feeding machine, which have the characteristics of fast paper feeding speed, high paper feeding stability and high paper feeding accuracy.

[0004] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions:

[0005] A paper feeding device comprises a first stand, a first bracket and a roller, wherein the first bracket is rotatably connected to the first stand via the roller, one end of the roller is connected to a first driving unit, and the first driving unit is used to drive the first bracket to flip;

[0006] The first platform is provided with a plurality of conveyor belts, and the conveyor belts are driven by a second driving unit;

[0007] Both sides of the first bracket are slidably connected to a moving seat, and the two moving seats are rotatably connected to the same first transmission rod, the first transmission rod is sleeved with a first gear, the first bracket is provided with a rack, and the first gear is meshed with the rack;

[0008] The two moving seats are also connected to a same crossbar, and a plurality of first rollers and a plurality of second rollers are detachably connected to the crossbar;

[0009] The first roller, the second roller and the conveyor belt form a conveying gap.

[0010] Furthermore, first gears are sleeved on both ends of the first transmission rod, the first gears are meshed with the racks, and the first transmission rod is driven by a manual wheel.

[0011] Furthermore, a plurality of second brackets are provided on the cross bar, wherein the end of the second bracket away from the roller is detachably connected to the first roller seat, the end of the second bracket close to the roller is detachably connected to the second roller seat, the two sides of the first roller seat are detachably connected to the first roller, and the two sides of the second roller seat are detachably connected to the second roller.

[0012] Furthermore, the first roller is a brush wheel, and the second roller is a rubber wheel.

[0013] A paper feeder comprises the paper feeding device described above, and also comprises a second frame, a paperboard bracket, a conveying device, a paper pressing roller assembly and a paper feeding device, wherein the paperboard bracket is located at the paper inlet of the conveying device and is slidably connected to the second frame, the paper feeding device is arranged at the paper outlet of the conveying device, the paper pressing roller assembly is rotatably connected to the first frame, the paper feeding device is fixedly connected to one end of the first frame, and the paper pressing roller assembly is connected to one side of the paper feeding device.

[0014] Furthermore, the paper pressing roller assembly includes a plurality of roller devices and a fixed rod, the roller device is connected to the fixed rod; the roller device includes a base, an embedding part, a third roller, a screw and a first spring, the base is connected to the middle part of the embedding part through a pin shaft, the embedding part is located on the first side of the base, a connecting plate is provided on the top of the rear side of the base extending outward toward the first side, a screw positioning hole is provided on the connecting plate, a through hole is provided at the first end of the embedding part, the second end of the embedding part is connected to the third roller, the screw passes through the through hole and is threadedly connected to the screw positioning hole, the diameter of the through hole is larger than the diameter of the screw, the first spring is sleeved on the screw, the first spring is compressed and its two ends respectively abut the first end of the embedding part and the connecting plate.

[0015] Furthermore, the base is also provided with an opening, the opening is sleeved on the fixing rod, a connecting block is provided at the bottom of the opening, and the connecting block is connected to the opening by means of screws.

[0016] Further, the paper feeding device includes a base, a third bracket, a fourth bracket, a first lifting device and a second lifting device, one end of the base is connected to the third bracket, the other end of the base is connected to the fourth bracket, the third bracket is connected to the first lifting device, the fourth bracket is connected to the second lifting device, the first lifting device is connected to the second lifting device through a second transmission rod, one side of the first lifting device is connected to a third driving unit, the third driving unit is used to drive the first lifting device to rise and fall and the second transmission rod to rotate;

[0017] A paper feed roller is provided above the base, one end of the paper feed roller is connected to the third bracket, the other end of the paper feed roller is connected to the fourth bracket, a paper pressing roller is provided above the paper feed roller, one end of the paper pressing roller is connected to the first lifting device, the other end of the paper pressing roller is connected to the second lifting device, and the paper feed roller and the paper pressing roller form a transmission gap;

[0018] The third bracket and the fourth bracket are both provided with grooves, the first lifting device and the second lifting device both include a first lifting seat, a second lifting seat, a fixing plate, a transmission box, a pin shaft and a threaded cap, the first lifting seat is slidably connected to the groove, the second lifting seat is fixedly connected to the top of the first lifting seat, the fixing plate is fixedly connected to the top of the third bracket and the fourth bracket, the transmission box is connected to the top of the fixing plate, and the pin shaft passes through the transmission box and the fixing plate in sequence and then is movably connected to the second lifting seat;

[0019] The pin shaft includes a first circular shaft segment, a second circular shaft segment and a third circular shaft segment, the first circular shaft segment is connected to the top of the second circular shaft segment, the third circular shaft segment is connected to the bottom of the second circular shaft segment, the second circular shaft segment is provided with a first keyway and a sliding key, the sliding key is detachably connected to the first keyway, a second keyway is provided inside the transmission box, the second keyway is matched and connected with the sliding key, the first circular shaft segment is provided with an external thread, the external thread is threadedly connected to the threaded nut, a chassis is provided at the bottom of the third circular shaft segment, and the diameter of the chassis is larger than the diameter of the through hole of the second lifting seat.

[0020] Furthermore, a second gear is sleeved on one end of the paper feed roller close to the third bracket, a third gear is sleeved on one end of the paper pressing roller close to the third bracket, a fourth gear is provided on one side of the second gear, a fifth gear is provided on one side of the fourth gear, the second gear is meshed with the fourth gear, the fourth gear is meshed with the fifth gear, the fifth gear is meshed with the third gear, a plurality of fourth rollers are provided on the paper feed roller, a plurality of fifth rollers are provided on the paper pressing roller, and a transmission gap is formed between the fourth roller and the fifth roller.

[0021] Furthermore, there is an accommodating space for accommodating the chassis between the first lifting seat and the second lifting seat, the height of the accommodating space is greater than the thickness of the chassis, the fixed plate is arranged above the second lifting seat, and a second spring is sleeved on the pin shaft, the second spring is compressed and its two ends respectively press against the bottom of the fixed plate and the top of the second lifting seat.

[0022] The paper feeding device and paper feeding machine provided by the present invention have the following beneficial effects compared with the prior art:

[0023] The present invention provides a paper feeding device, which can detachably install the first roller and the second roller, so that the number of the first roller and the second roller can be freely adjusted according to the size of the corrugated paper. For example, when the corrugated paper is large, more second rollers can be installed, and the friction of the second rollers can prevent slipping, so that the corrugated paper can be better pressed. When the corrugated paper is small, the number of the second rollers can be reduced to save costs. Similarly, the number of the first rollers can also be adjusted at will according to the size of the corrugated paper; because the first gear on the first transmission rod is meshed with the rack, the first transmission rod can be rotated by manually adjusting the manual wheel, and then the moving seat can be driven to move on the rack, so that the cross bar also moves, and the positions of the first roller and the second roller can be adjusted at will, so that pressing and transmission can be better achieved; because one end of the roller is connected to the first driving unit, the first driving unit can drive the first bracket to flip, which is convenient for maintenance or disassembly and installation of the first roller and the second roller, and improves convenience.

[0024] A paper feeder is provided with a paper feeding device, and has the characteristics of fast paper feeding speed, high paper feeding stability and high paper feeding accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The structure of the paper feeding device in the present invention is shown in FIG. Figure 1 ;

[0026] Figure 2 The structure of the paper feeding device in the present invention is shown in FIG. Figure 2 ;

[0027] Figure 3 It is a structural schematic diagram of the paper feeder in the present invention;

[0028] Figure 4 It is a structural schematic diagram of the paper pressing roller assembly in the present invention;

[0029] Figure 5 It is a schematic structural diagram of the roller device in the paper pressing roller assembly of the present invention;

[0030] Figure 6 An exploded view of a roller device in the paper pressing roller assembly of the present invention;

[0031] Figure 7 It is a structural schematic diagram of the paper feeding device in the present invention;

[0032] Figure 8 It is a partial exploded view of the paper feeding device in the present invention;

[0033] Fig. 9 is a cross-sectional view of a second lifting device in the paper feeding device of the present invention;

[0034] Fig.10 It is a schematic diagram of the pin structure in the paper feeding device of the present invention;

[0035] Fig.11 for Fig. 9 A partial enlarged view of point A in the middle.

[0036] [Description of Reference Numerals]

[0037] 1-First platform, 101-Conveyor belt,

[0038] 2-first bracket, 201-rack, 202-moving seat, 203-first transmission rod, 204-first gear, 205-manual wheel, 206-cross bar, 207-second bracket, 2071-first roller seat, 20711-first roller, 2072-second roller seat, 20721-second roller,

[0039] 3-roller, 4-first driving unit, 5-second driving unit, 6-second stand, 7-cardboard bracket, 8-conveying device,

[0040] 9-roller device, 91-base, 911-connecting plate, 9111-screw positioning hole, 912-opening, 913-connecting block, 92-embedded portion, 921-through hole, 93-third roller, 94-screw, 95-first spring, 96-first pin, 10-fixing rod, 11-connecting head,

[0041] 12-base, 13-third bracket, 14-fourth bracket, 141-groove, 15-first lifting device,

[0042] 16-second lifting device, 161-first lifting seat, 162-second lifting seat, 163-fixed plate, 164-transmission box, 165-second pin shaft, 1651-first circular shaft section, 1652-second circular shaft section, 16521-first keyway, 1653-third circular shaft section, 16531-chassis, 166-threaded cap, 167-second spring, 168-accommodation space, 169-activity gap,

[0043] 17-second transmission rod, 18-third driving unit, 19-paper feeding roller, 20-paper pressing roller, 21-second gear, 22-third gear, 23-fourth gear, 24-fifth gear, 25-fourth roller, 26-fifth roller. DETAILED DESCRIPTION

[0044] The present invention is described in detail below in conjunction with specific embodiments.

[0045] like Figure 1-Figure 2As shown, a paper feeding device comprises a first stand 1, a first bracket 2 and a roller 3, wherein the first bracket 2 is rotatably connected to the first stand 1 via the roller 3, one end of the roller 3 is connected to a first driving unit 4, the first driving unit 4 is used to drive the first bracket 2 to flip, and the first driving unit 4 is a cylinder;

[0046] The first frame 1 is provided with a plurality of conveyor belts 101, and the conveyor belts 101 are driven by a second driving unit 5, and the second driving unit 5 is a motor;

[0047] A rack 201 and a movable seat 202 are provided on both sides of the first bracket 2. The two movable seats 202 are rotatably connected to the same first transmission rod 203. Both ends of the first transmission rod 203 are sleeved with a first gear 204. The first gear 204 is meshed with the rack 201. The first transmission rod 203 is driven by a manual wheel 205.

[0048] The two movable seats 202 are also connected to the same cross bar 206, and a plurality of second brackets 207 are provided on the cross bar 206. The end of the second bracket 207 away from the roller 3 is detachably connected to the first roller seat 2071, and the end of the second bracket 201 close to the roller 3 is detachably connected to the second roller seat 2072. The first roller seat 2071 is detachably connected to the first roller 20711 on both sides, and the first roller 20711 is installed on the first roller seat 2071 by screws, and the height of the first roller 20711 can be adjusted by screws to suit the thickness of different corrugated papers. The second roller seat 2072 is detachably connected to the second roller 20721 on both sides, and the second roller 20721 is installed on the second roller seat 2072 by screws. The height of the second roller 20721 is adjusted by a screw to suit the thickness of different corrugated papers; the first roller 20711 and the second roller 20721 form a transmission gap with the conveyor belt 101, and the first roller 20711 is a brush wheel. Since the first roller 20711 is far away from roller 3, by setting the first roller 20711 as a brush wheel, the friction of the first roller 20711 on the corrugated paper can be reduced, so that the first roller 20711 is easy to slip, and the corrugated paper can be transported to an external die-cutting machine for processing more quickly; the second roller 20721 is a rubber wheel. Since the second roller 20721 is close to roller 3, by setting the second roller 20721 as a rubber wheel, the friction can be increased, the corrugated paper can be prevented from slipping during the transmission process, and the paper feeding stability and accuracy can be improved.

[0049] By detachably installing the first roller 20711 and the second roller 20721, the number of the first roller 20711 and the second roller 20721 can be freely adjusted according to the size of the corrugated paper. For example, when the corrugated paper is larger, more second rollers 201721 can be installed. The friction of the second rollers 201721 can prevent slipping and better compress the corrugated paper. When the corrugated paper is smaller, the number of the second rollers 201721 can be reduced to save costs. Similarly, the number of the first rollers 20711 can also be adjusted at will according to the size of the corrugated paper; since the first gear 204 on the first transmission rod 203 is meshed with the rack 201, the first transmission rod 203 can be rotated by manually adjusting the manual wheel 205, thereby driving the movable seat 202 to move on the rack, so that the cross bar 206 also moves, and the positions of the first rollers 20711 and the second rollers 20721 can be adjusted at will, so as to better achieve compaction and transmission; since one end of the roller 3 is connected to the first driving unit 4, the first driving unit 4 can drive the first bracket 2 to flip, which is convenient for maintenance or disassembly and installation of the first rollers 20711 and the second rollers 20721, thereby improving convenience.

[0050] like Figure 3 As shown, a paper feeder includes the above-mentioned paper feeding device, and also includes a second stand 6, a cardboard bracket 7, a conveying device 8, a paper pressing roller assembly and a paper feeding device, wherein the cardboard bracket 7 is located at the paper inlet of the conveying device 8 and is slidably connected to the second stand 6, the paper feeding device is arranged at the paper outlet of the conveying device 8, the paper pressing roller assembly is rotatably connected to the first stand 1, the paper feeding device is fixedly connected to one end of the first stand 1, and the paper pressing roller assembly is connected to one side of the paper feeding device.

[0051] The paperboard bracket and the conveying device in this embodiment are both prior art and will not be described in detail here. For details, please refer to Chinese Patent No. 201810590059.9.

[0052] like Figure 4-Figure 6As shown, the paper pressing roller assembly includes a plurality of roller devices 9 and a fixing rod 10, wherein the roller device 9 is connected to the fixing rod 10; the roller device 9 includes a base 91, an embedded portion 92, a third roller 93, a screw 94 and a first spring 95, wherein the base 91 is connected to the middle of the embedded portion 92 via a first pin shaft 96, wherein the embedded portion 92 is located on a first side of the base 91, and a connecting plate 911 is provided at the top of the rear side of the base 91 extending outwardly toward the first side, wherein the connecting plate 911 is provided with a screw positioning hole 9111, and the embedded portion A through hole 921 is provided at the first end of the engaging portion 92, and the second end of the engaging portion 92 is connected to the third roller 93. The screw 94 passes through the through hole 921 and is threadedly connected to the screw positioning hole 9111. The diameter of the through hole 921 is larger than the diameter of the screw 94. By setting the diameter of the through hole 921 to be larger than the diameter of the screw 94, the screw 94 is not fixed in position by the through hole 921. When the first spring 95 generates an elastic force, the engaging portion 92 can move on the screw 94, thereby driving the third roller 93 to rise or fall, so as to better adapt to the thickness of the paper.

[0053] The first spring 95 is sleeved on the screw 94. The first spring 95 is compressed and its two ends respectively abut against the first end of the embedded part 92 and the connecting plate 911. By turning the screw 94, the lowest point of the third roller 93 can be adjusted to adapt to papers of different thicknesses.

[0054] The first pin 96 is used to connect the embedded part 92 to the base 91. The embedded part 92 can rotate freely through the first pin 96. The first spring 95 is sleeved on the screw 94. The first spring 95 is compressed and its two ends respectively abut against the first end of the embedded part 92 and the connecting plate 911. When too much paper is transmitted externally or the paper thickness is too high, the paper will push up the third roller 93. At this time, due to the elastic force of the first spring 95, a certain force will be applied to the third roller 93, and the third roller 93 can still achieve the compression of the paper. By arranging multiple roller devices 9 on the fixed rod 10, it can be matched with multiple conveyor belts 101.

[0055] The base 91 is also provided with an opening 912, and the opening 912 is sleeved on the fixing rod 10. A connecting block 913 is provided at the bottom of the opening 912, and the connecting block 913 is connected to the opening 912 by means of screws. The roller device 9 can be firmly connected to the fixing rod 10 through the connecting block 913 at the bottom of the opening 912.

[0056] The fixing rod 10 is a cube, and the opening 912 is matched and connected with the fixing rod 10. The fixing rod 10 is set as a cube, which has better stability than a cylinder and can better fix the roller device 9 to prevent the roller device 9 from sliding on the fixing rod 10 during use.

[0057] Both ends of the fixed rod 10 are provided with connecting heads 11, and the connecting heads 11 are cylindrical. The connecting heads 11 are used to connect the fixed rod 10 to the first stand 1. The connecting heads 11 are set as cylinders, which can be easily rotated so that the entire paper pressing roller assembly can rotate, and all the third rollers 93 can be adjusted in height together. The embedded part 92 is L-shaped, and the third roller 93 is a rubber wheel. The rubber wheel has a large friction force, which can prevent the third roller 93 from slipping and achieve better compression of the paper.

[0058] The working principle of the paper pressing roller assembly is as follows: the corrugated paper is transmitted to the bottom of the roller device 9 through the external conveying device 8, and the multiple roller devices 9 can realize the compaction of the corrugated paper, so that it can better contact with the conveyor belt 101, which is conducive to the transmission of the corrugated paper. When the thickness of the corrugated paper is high, the corrugated paper will lift up the third roller 93. Due to the elastic force of the first spring 95, a certain force will be applied to the third roller 93, so that the third roller 93 can still achieve compaction of the paper and better achieve the transmission of the corrugated paper. Similarly, when the number of corrugated papers transmitted is too large, the first spring 95 in the roller device 9 also produces an elastic force, which will apply a certain force to the third roller 93, so that the third roller 93 can still achieve compaction of the paper. Of course, due to the setting of the mechanical equipment, the number of corrugated papers transmitted will not exceed two at most.

[0059] like Figure 7-Figure 11 As shown, the paper feeding device includes a base 12, a third bracket 13, a fourth bracket 14, a first lifting device 15 and a second lifting device 16. One end of the base 12 is connected to the third bracket 13, and the other end of the base 12 is connected to the fourth bracket 14. The third bracket 13 is connected to the first lifting device 15, and the fourth bracket 14 is connected to the second lifting device 16. The first lifting device 15 is connected to the second lifting device 16 through a second transmission rod 17. A third driving unit 18 is connected to one side of the first lifting device 15. The third driving unit 18 is used to drive the first lifting device 15 to lift and the second transmission rod 17 to rotate. By starting the third driving unit 18, the first lifting device 15 is driven to run, and at the same time, the second transmission rod 17 is also driven to rotate. Since the second transmission rod 17 is connected to the second lifting device 16, when the second transmission rod 17 is driven, the second lifting device 16 can also run. In this embodiment, the third driving unit 18 is a prior art, as long as it can realize the driving of the lifting device and the second transmission rod 17. The third driving unit 18 selected in this embodiment is a motor;

[0060] A paper feed roller 19 is provided above the base 12, one end of the paper feed roller 19 is connected to the third bracket 13, the other end of the paper feed roller 19 is connected to the fourth bracket 14, a paper pressing roller 20 is provided above the paper feed roller 19, one end of the paper pressing roller 20 is connected to the first lifting device 15, the other end of the paper pressing roller 20 is connected to the second lifting device 16, the paper feed roller 19 and the paper pressing roller 20 form a transmission gap, the first lifting device 15 and the second lifting device 16 are used to realize the lifting and lowering of the paper pressing roller 20, so that the size of the gap between the paper pressing roller 20 and the paper feed roller 19 can be adjusted at will to meet the transmission of corrugated paper of different thicknesses;

[0061] The third bracket 13 and the fourth bracket 14 are both provided with a groove 141, and the first lifting device 15 and the second lifting device 16 both include a first lifting seat 161, a second lifting seat 162, a fixing plate 163, a transmission box 164, a second pin shaft 165 and a threaded cap 166, the first lifting seat 161 is slidably connected to the groove 141, the second lifting seat 162 is fixedly connected to the top of the first lifting seat 161, the fixing plate 163 is fixedly connected to the top of the third bracket 13 and the fourth bracket 14, the transmission box 164 is connected to the top of the fixing plate 163, and the second pin shaft 165 passes through the transmission box 164 and the fixing plate 163 in sequence and then is movably connected to the second lifting seat 162;

[0062] The second pin shaft 165 includes a first circular shaft segment 1651, a second circular shaft segment 1652 and a third circular shaft segment 1653, wherein the first circular shaft segment 1651 is connected to the top of the second circular shaft segment 1652, and the third circular shaft segment 1653 is connected to the bottom of the second circular shaft segment 1652, and the second circular shaft segment 1652 is provided with a first keyway 16521 and a sliding key (not shown in the drawings), and the sliding key is detachably connected to the first keyway 16521, and a second keyway is provided inside the transmission box 164, and the second keyway is matched and connected with the sliding key, and the second pin shaft 165 can be transmitted by arranging the first keyway 16521 and the sliding key on the second circular shaft segment 1652. The delivery box 164 is driven to rotate, and the first circular shaft section 1651 is provided with an external thread, and the external thread is threadedly connected with the threaded nut 166. When the second pin shaft 165 rotates, the second pin shaft 165 is lifted and lowered by means of the above-mentioned threaded transmission connection. A chassis 16531 is provided at the bottom of the third circular shaft section 1653. The diameter of the chassis 16531 is larger than the diameter of the through hole of the second lifting seat 162. When the second pin shaft 165 is lifted and lowered, since the diameter of the chassis 16531 is larger than the diameter of the through hole of the second lifting seat 162, the chassis 16531 can pull up the second lifting seat 162, drive the second lifting seat 162 to rise, and then drive the first lifting seat 161 to rise.

[0063] The transmission box referred to in the present application includes a power input end, a first power output end, and a second power output end. The power input end is used to connect to the third drive unit. Through the transmission structure inside the transmission box, the output speed of the first power output end can be consistent with the output speed of the third drive unit. The first power output end is used to connect the second transmission rod, and the second transmission rod is connected to the first power output end of another transmission box, so that the first lifting device and the second lifting device move synchronously; and the second power output end is used to be connected to the second pin shaft. Through the transmission structure inside the transmission box, the output speed of the second power output end is lower than the output speed of the third drive unit, so that the second pin shaft rotates at a low speed.

[0064] The end of the paper feeding roller 19 near the third bracket 13 is sleeved with a second gear 21, the end of the paper pressing roller 20 near the third bracket 13 is sleeved with a third gear 22, a fourth gear 23 is provided on one side of the second gear 21, a fifth gear 24 is provided on one side of the fourth gear 23, the second gear 21 is meshed with the fourth gear 23, the fourth gear 23 is meshed with the fifth gear 24, the fifth gear 24 is meshed with the third gear 22, through the mutual cooperation of the second gear 21, the third gear 22, the fourth gear 23 and the fifth gear 24, so that when the paper feeding roller 19 is driven to rotate by the second driving unit 5, the paper pressing roller 20 is also rotated through the transmission of the second gear 21, the third gear 22, the fourth gear 23 and the fifth gear 24, so as to realize the transmission of corrugated paper. Of course, based on the characteristics of gear transmission, in this scheme, the paper pressing roller 20 cannot rise or fall too much, and after the paper pressing roller 20 rises or falls, the third gear 22 and the fifth gear 24 should still be kept in meshing state.

[0065] The paper feeding roller 19 is provided with a plurality of fourth rollers 25, and the paper pressing roller 20 is provided with a plurality of fifth rollers 26. The fourth rollers 25 and the fifth rollers 26 form a transmission gap. The fourth rollers 25 and the fifth rollers 26 are both rubber wheels. Using rubber wheels for the fourth rollers 25 and the fifth rollers 26 can increase friction and prevent the corrugated paper from slipping during the transmission process.

[0066] A through hole is provided in the middle of the first lifting seat 161 , and the paper pressing roller 20 is rotatably connected to the through hole.

[0067] There is an accommodating space 168 for accommodating the chassis 16531 between the first lifting seat 161 and the second lifting seat 162, and the height of the accommodating space 168 is greater than the thickness of the chassis 16531. The fixing plate 163 is arranged above the second lifting seat 162, and the second pin shaft 165 is sleeved with a second spring 167. The second spring 167 is compressed and its two ends respectively press against the bottom of the fixing plate 163 and the top of the second lifting seat 162. By arranging the second spring 167, the top of the chassis 16531 is closely attached to the bottom of the second lifting seat 162, and there is a movable gap 169 between the bottom of the chassis 16531 and the top of the first lifting seat 161. The movable gap 169 is to enable the first lifting seat 161 to slightly rise a certain distance when necessary. This necessary time may be when two stacked corrugated papers enter the transmission gap at the same time. If the first lifting seat 161 cannot rise, that is, the paper pressing roller 20 cannot rise, the fixed distance transmission gap will cause the corrugated paper to be crushed and scrapped.

[0068] The second lifting seat 162 is a step-shaped structure.

[0069] The working principle of the paper feeding device is as follows: the third driving unit 18 is started, and the third driving unit 18 drives the first lifting device 15 to operate, and the second transmission rod 17 drives the second lifting device 16 to operate. The working principles of the first lifting device 15 and the second lifting device 16 are as follows: the transmission box 164 drives the second pin shaft 165 to rotate through the cooperation of the keyway and the sliding key. After the second pin shaft 165 rotates, the external thread of the first circular shaft section 1651 cooperates with the threaded cap 166 to make the second pin shaft 165 move up and down. When the second pin shaft 165 moves up and down, it drives the first lifting seat 161 and the second lifting seat 162 to move up and down together, so as to drive the paper pressing roller 20 to rise and fall, so that the transmission gap between the paper feeding roller 19 and the paper pressing roller 20 is suitable for the thickness of the corrugated paper.

[0070] In the absence of conflict, the above-mentioned embodiments and features thereof may be combined with each other.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A paper feeding device, characterized in that: The invention comprises a first frame, a first bracket and a roller, wherein the first bracket is rotatably connected to the first frame via the roller, one end of the roller is connected to the first driving unit, and the first driving unit is used to drive the first bracket to flip; a plurality of conveyor belts are arranged on the first frame, and the conveyor belts are driven by the second driving unit; both sides of the first bracket are slidably connected to movable seats, and the two movable seats are rotatably connected to the same first transmission rod, the first transmission rod is sleeved with a first gear, the first bracket is provided with a rack, and the first gear is meshed with the rack; the two movable seats are also connected to the same cross bar, and the cross bar is detachably connected to a plurality of first rollers and a plurality of second rollers; The first roller, the second roller and the conveyor belt form a transmission gap; both ends of the first transmission rod are sleeved with a first gear, the first gear is engaged with the rack, and the first transmission rod is driven by a manual wheel; a plurality of second brackets are provided on the cross bar, the end of the second bracket away from the roller is detachably connected to the first roller seat, the end of the second bracket close to the roller is detachably connected to the second roller seat, the two sides of the first roller seat are detachably connected to the first roller, and the two sides of the second roller seat are detachably connected to the second roller; the first roller is a brush wheel, and the second roller is a rubber wheel.

2. A paper feeder, comprising the paper feeder device according to claim 1, characterized in that: The paper feeding device is arranged on the paper outlet of the conveying device, the paper pressing roller assembly is rotatably connected to the first frame, the paper feeding device is fixedly connected to one end of the first frame, and the paper pressing roller assembly is connected to one side of the paper feeding device; the paper pressing roller assembly comprises a plurality of roller devices and a fixing rod, and the roller device is connected to the fixing rod; the roller device comprises a base, an embedding portion, a third roller, a screw and a first spring, the base is connected to the middle of the embedding portion through a pin shaft, the embedding portion is located on the first side of the base, the top of the rear side of the base extends outwardly toward the first side with a connecting plate, the connecting plate is provided with a screw positioning hole, the first end of the embedding portion is provided with a through hole, the second end of the embedding portion is connected to the third roller, The screw passes through the through hole and is threadedly connected to the screw positioning hole, the diameter of the through hole is larger than the diameter of the screw, the first spring is sleeved on the screw, the first spring is compressed and its two ends respectively abut the first end of the embedded part and the connecting plate; the base is also provided with an opening, the opening is sleeved on the fixing rod, the bottom of the opening is provided with a connecting block, and the connecting block is connected to the opening by means of a screw; the paper feeding device comprises a base, a third bracket, a fourth bracket, a first lifting device and a second lifting device, one end of the base is connected to the third bracket, the other end of the base is connected to the fourth bracket, the third bracket is connected to the first lifting device, the fourth bracket is connected to the second lifting device, the first lifting device is connected to the second lifting device through the second transmission rod, and a third driving unit is connected to one side of the first lifting device, and the third driving unit is used to drive the first lifting device to rise and fall and the second transmission rod to rotate; A paper feed roller is provided above the base, one end of the paper feed roller is connected to the third bracket, the other end of the paper feed roller is connected to the fourth bracket, a paper pressing roller is provided above the paper feed roller, one end of the paper pressing roller is connected to the first lifting device, the other end of the paper pressing roller is connected to the second lifting device, and the paper feed roller and the paper pressing roller form a transmission gap; the third bracket and the fourth bracket are both provided with grooves, the first lifting device and the second lifting device both include a first lifting seat, a second lifting seat, a fixed plate, a transmission box, a pin shaft and a threaded cap, the first lifting seat is slidably connected to the groove, the second lifting seat is fixedly connected to the top of the first lifting seat, the fixed plate is fixedly connected to the top of the third bracket and the fourth bracket, the transmission box is connected to the top of the fixed plate, the pin shaft passes through the transmission box and the fixed plate in sequence and is movably connected to the second lifting seat; the pin shaft includes a first circular shaft segment, a second circular shaft segment and a third circular shaft segment, the first circular shaft segment is connected to the top of the second circular shaft segment, the third circular shaft segment is connected to the bottom of the second circular shaft segment, the second circular shaft segment is provided with a first keyway and a sliding key, and the sliding key is detachably connected to the first keyway, A second keyway is provided inside the transmission box, and the second keyway is matched and connected with the sliding key. The first circular shaft section is provided with an external thread, and the external thread is threadedly connected with the threaded nut. A chassis is provided at the bottom of the third circular shaft section, and the diameter of the chassis is greater than the diameter of the through hole of the second lifting seat. A second gear is sleeved on one end of the paper feeding roller close to the third bracket, and a third gear is sleeved on one end of the paper pressing roller close to the third bracket. A fourth gear is provided on one side of the second gear, and a fifth gear is provided on one side of the fourth gear. The second gear is meshed with the fourth gear, the fourth gear is meshed with the fifth gear, and the fifth gear is meshed with the third gear. A plurality of fourth rollers are provided on the paper feeding roller, and a plurality of fifth rollers are provided on the paper pressing roller, and a transmission gap is formed between the fourth roller and the fifth roller. There is an accommodating space for accommodating the chassis between the first lifting seat and the second lifting seat, and the height of the accommodating space is greater than the thickness of the chassis. The fixed plate is provided above the second lifting seat, and a second spring is sleeved on the pin shaft. The second spring is compressed and its two ends respectively abut against the bottom of the fixed plate and the top of the second lifting seat.

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