A corrugated paper feeding and sending device

Abstract

The present invention discloses a corrugated paper feeding and sending device, comprising a feeding and sending platform, a rolling sending mechanism and a paper supporting mechanism; the rolling sending mechanism comprises a sending wheel, a sending shaft, a sending driving mechanism and a negative pressure mechanism; the sending wheel is provided with multiple groups and each group comprises multiple sending wheels; the sending wheel is a hollow structure, and a plurality of evenly distributed first negative pressure holes are provided on the wheel surface of the sending wheel; the sending shaft is a hollow structure, and the inner cavity of the sending shaft is connected with the inner cavity of the sending wheel; the negative pressure mechanism comprises a negative pressure shaft, a negative pressure wheel and a negative pressure machine; the negative pressure shaft is fixedly sleeved in the sending shaft, and a negative pressure channel is provided in the negative pressure shaft; the negative pressure wheel is fixedly arranged on the negative pressure shaft and is located in the sending wheel; a second negative pressure hole connected with the negative pressure channel is provided on the wheel surface of the negative pressure wheel, and the second negative pressure hole extends vertically. The present invention can directly adsorb and transport corrugated paper, and has the advantages of low energy consumption, stable transportation, high reliability, etc.

Description

Technical Field

[0001] The invention relates to a corrugated paper processing device, in particular to a corrugated paper feeding and sending device. Background Art

[0002] The accuracy and stability of paper feeding are of great significance to carton packaging printing.

[0003] In the processing equipment of corrugated paper boxes, the corrugated paper blanks are sent out in sequence by the feeding device, and then the corrugated paper blanks are transported to the cutting device or the printing device by the conveying device, and finally the corrugated paper blanks are packaged and collected by the packing device. Among them, the existing feeding device can automatically feed and distribute the corrugated paper without manual participation, such as a leading edge paper feeding device disclosed in the invention patent with the authorization announcement number CN108859244B.

[0004] The above-mentioned leading edge paper feeding device has the following disadvantages:

[0005] Since the suction holes are arranged between two adjacent sets of rubber wheels, the corrugated paper is supported on the top of the rubber wheels when feeding paper. There is a certain distance between the suction holes and the corrugated paper, and the two are not in contact. Negative pressure is needed to absorb the corrugated paper toward the rubber wheels, which not only consumes a lot of energy and causes loud noise, but also does not directly absorb the corrugated paper. It is difficult for the corrugated paper to fit stably on the rubber wheels and is prone to slipping. Its reliability needs to be improved. Summary of the invention

[0006] The purpose of the present invention is to overcome the above-mentioned problems and provide a corrugated paper feeding and sending device, which can directly absorb and transport corrugated paper and has the advantages of low energy consumption, stable transportation and high reliability.

[0007] The purpose of the present invention is achieved through the following technical solutions:

[0008] A corrugated paper feeding and sending device, comprising a feeding and sending platform, a rolling sending mechanism and a paper supporting mechanism;

[0009] The rolling sending mechanism includes a sending wheel, a sending shaft, a sending driving mechanism and a negative pressure mechanism;

[0010] The sending wheel is provided with multiple groups and each group includes multiple sending wheels; the sending wheel is a hollow structure, and the wheel surface of the sending wheel is provided with multiple evenly distributed first negative pressure holes; the feeding and sending platform is provided with multiple first avoidance holes for avoiding the sending wheels; a part of the sending wheel passes through the first avoidance holes and extends to the feeding and sending platform; the sending shaft is provided with multiple and arranged in a straight line along the horizontal direction; multiple groups of sending wheels are coaxially fixed on multiple sending shafts respectively; multiple sending wheels in the same group are evenly arranged along the axial direction of the corresponding sending shaft; the sending shaft is a hollow structure, and the inner cavity of the sending shaft is connected with the inner cavity of the corresponding sending wheel;

[0011] The driving end of the sending driving mechanism is connected to the sending rotating shaft;

[0012] The negative pressure mechanism includes a negative pressure shaft, a negative pressure wheel and a negative pressure machine; the number of the negative pressure shafts is the same as the number of the sending shafts and they are fixedly sleeved in the sending shaft, a negative pressure channel is provided in the negative pressure shaft, one end of the negative pressure channel is connected to the negative pressure machine through a negative pressure pipeline; the number of the negative pressure wheels is the same as the number of the sending wheels, the negative pressure wheel is fixedly arranged on the corresponding negative pressure shaft and is located in the sending wheel; a second negative pressure hole connected to the negative pressure channel is provided on the wheel surface of the negative pressure wheel, and the second negative pressure hole extends vertically; in the circumferential direction, the length of the second negative pressure hole is greater than the length of the first negative pressure hole.

[0013] The working principle of the above-mentioned corrugated paper feeding and sending device is as follows:

[0014] During operation, the corrugated paper to be sent is stacked on the paper supporting mechanism, and the corrugated paper to be sent is driven to move downward by the paper supporting mechanism, so that the corrugated paper at the bottom falls on the sending wheel; at the same time, the sending shaft is driven to rotate by the sending driving mechanism, and then the sending wheel is driven to rotate; at the same time, negative pressure is generated by the negative pressure machine, and the negative pressure is transmitted to the negative pressure channel of the negative pressure shaft and the second negative pressure hole of the negative pressure wheel through the negative pressure pipeline; when the first negative pressure hole of the sending wheel rotates to above the second negative pressure hole, the first negative pressure hole is connected with the second negative pressure hole, and the negative pressure is transmitted to the first negative pressure hole at this time, and then the first negative pressure hole adsorbs the corrugated paper at the bottom, and drives the corrugated paper to be transported forward a certain distance; according to the above operation, the first negative pressure hole of the sending wheel acts on the corrugated paper at the bottom in turn, and the corrugated paper can be smoothly sent out, thereby completing the loading work.

[0015] In a preferred embodiment of the present invention, in the same group of sending wheels, the first negative pressure holes of two adjacent sending wheels are staggered, so that the corrugated paper can be adsorbed and transported alternately, the connection distance can be reduced, and the transport efficiency can be improved.

[0016] Furthermore, in the same group of two adjacent sending wheels, the first negative pressure hole of at least one sending wheel is connected to the second negative pressure hole of the corresponding negative pressure wheel. In this way, seamless connection can be achieved, and the two sending wheels can absorb and transport the corrugated paper in turn, which is conducive to improving the transportation efficiency.

[0017] A preferred solution of the present invention is that a solenoid valve is provided at the head end of the negative pressure shaft; and a distance sensor for detecting the distance of the upper corrugated paper is provided below the sending rotating shaft. In this way, the distance of the upper corrugated paper is detected in real time by the distance sensor. When the corrugated paper falls onto the sending wheel, the distance detected by the distance sensor is the distance to the lowest corrugated paper; as the corrugated paper is transported forward, when the distance detected by the distance sensor becomes larger and the amplitude of the change is approximately equal to the thickness of the corrugated paper, it means that the lowest corrugated paper has left the current sending wheel, and at this time, the distance detected by the distance sensor is the distance to the second to last corrugated paper below; the solenoid valve of the negative pressure shaft corresponding to the sending wheel is controlled to be closed by the controller, so that the group of negative pressure shafts and negative pressure wheels stop working, thereby further saving energy consumption.

[0018] A preferred embodiment of the present invention, wherein the paper supporting mechanism includes supporting wheels, a bracket and a lifting drive mechanism; the supporting wheels are provided with multiple groups and each group includes multiple supporting wheels; the bracket is provided with multiple groups of paper supporting mounting parts, and the arrangement direction of the multiple groups of paper supporting mounting parts is the same as the arrangement direction of the multiple groups of sending wheels; the multiple groups of paper supporting mounting parts are arranged alternately with the multiple groups of sending wheels; each group of paper supporting mounting parts includes multiple paper supporting mounting parts; the multiple groups of supporting wheels are rotatably connected to the paper supporting mounting parts of the multiple groups of brackets respectively; in the sending direction of corrugated paper, the height of the supporting wheels decreases successively; the driving end of the lifting drive mechanism is connected to the bracket; the loading and sending platform is provided with multiple second avoidance holes for avoiding supporting wheels and paper supporting mounting parts. Through the above structure, when the sending wheel drives the corrugated paper at the bottom to move forward, since the other corrugated papers above remain motionless, the penultimate corrugated paper at the bottom gradually emerges; at this time, the lifting drive mechanism drives the bracket to move upward, so that the highest supporting wheel is pressed against the bottom surface of the penultimate corrugated paper at the bottom, so that the supporting wheel supports one end of the upper corrugated paper, which can reduce the gravity of the upper corrugated paper pressing on the lower corrugated paper, which is conducive to reducing the resistance of transportation and ensuring that the lower corrugated paper can be smoothly transported out. Further, since the height of the supporting wheel decreases in the direction of sending the corrugated paper, the lifting drive mechanism continues to drive the bracket upward in sequence following the speed at which the penultimate corrugated paper at the bottom emerges, so that the supporting wheels of other groups support the penultimate corrugated paper at the bottom in sequence, thereby gradually reducing the gravity of the upper corrugated paper, further ensuring that the transportation work is completed smoothly.

[0019] Furthermore, a plurality of spring mounting parts are provided at the lower end of the bracket, and the spring mounting parts can movably pass through the transverse mounting plate of the loading and sending platform, and the spring mounting parts are provided with two limiting rings respectively located above and below the transverse mounting plate; a paper supporting spring is sleeved on the spring mounting parts, and the two ends of the paper supporting spring are respectively pressed against the loading and sending platform and the limiting ring located below.

[0020] Furthermore, the lifting drive mechanism includes a lifting drive cylinder, and a telescopic rod of the lifting drive cylinder is fixedly connected to the bracket.

[0021] A preferred embodiment of the present invention further includes a limiting mechanism, which includes a front limiting mechanism, and the front limiting mechanism includes a front limiting baffle; the front limiting baffle is fixedly arranged on the limiting frame and is located above the front end of the loading and sending platform, and a sending channel for a sheet of corrugated paper to pass through is provided between the front limiting baffle and the surface of the loading and sending platform.

[0022] Furthermore, the limiting mechanism also includes a left limiting mechanism and a right limiting mechanism;

[0023] The left limit mechanism includes a left limit baffle and a left adjustment drive mechanism; the left adjustment drive mechanism includes a left adjustment drive motor and a left adjustment transmission assembly; the left adjustment drive motor is arranged on the limit frame; the left adjustment transmission assembly includes a left adjustment screw and a left adjustment screw nut; the left adjustment screw nut is connected to the left limit baffle;

[0024] The right limiting mechanism includes a right limiting baffle and a right adjusting drive mechanism; the right adjusting drive mechanism includes a right adjusting drive motor and a right adjusting transmission assembly; the right adjusting drive motor is arranged on the limiting frame; the right adjusting transmission assembly includes a right adjusting screw and a right adjusting screw nut; the right adjusting screw nut is connected to the right limiting baffle.

[0025] A preferred solution of the present invention is that a rear support mechanism for supporting one end of the upper corrugated paper is provided at the rear of the feeding and sending platform, and the rear support mechanism includes a rear support frame, a rear support plate and a rear support driving mechanism; the rear support plate is vertically arranged on the rear support driving mechanism, and the top of the rear support plate is inclined toward a side away from the feeding and sending platform. Through the above structure, one end of the upper part of the corrugated paper can be tilted against the top of the rear support plate to reduce the conveying resistance below; when the corrugated paper below is almost sent, the rear support plate is driven away from the feeding and sending platform by the rear support driving mechanism, so that the corrugated paper leaning against the rear support plate is stacked downward, thereby realizing continuous paper feeding.

[0026] Furthermore, the rear support drive mechanism includes a mounting seat, a rear support drive motor and a rear support transmission assembly; the rear support transmission assembly includes a gear and a rack, the rack is arranged on the mounting seat, and the gear is connected to the output shaft of the rear support drive motor; the rear support plate and the rear support drive motor are both arranged on the mounting seat.

[0027] Furthermore, a guide structure is provided between the mounting seat and the rear support frame, and the guide structure includes a guide rail and a sliding block.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. The corrugated paper feeding and sending device of the present invention can directly absorb and send corrugated paper by integrating negative pressure on the sending wheel, with high reliability, thereby successfully completing the feeding work. 2. Since the first negative pressure hole of the sending wheel directly contacts the corrugated paper, no waste of negative pressure will be caused, which can greatly reduce energy consumption and production costs.

[0030] 3. The first negative pressure hole of the transmitting wheel of the present invention is in direct contact with the corrugated paper, which can reduce noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the three-dimensional structure of the corrugated paper feeding and sending device of the present invention.

[0032] Figure 2 It is a three-dimensional structural schematic diagram of the rolling sending mechanism and the paper supporting mechanism of the present invention.

[0033] Figure 3 It is a schematic exploded view of the three-dimensional structure of the sending wheel, the sending rotating shaft, the negative pressure shaft and the negative pressure wheel of the present invention.

[0034] Figure 4 It is a partial cross-sectional view of the sending wheel, the sending rotating shaft, the negative pressure shaft and the negative pressure wheel of the present invention.

[0035] Figure 5-7 It is a side view of multiple different working states of the rolling sending mechanism and the paper supporting mechanism of the present invention. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described below in conjunction with embodiments and drawings, but the embodiments of the present invention are not limited thereto.

[0037] See also Figure 1-4The corrugated paper feeding and sending device of this embodiment comprises a feeding and sending platform 1, a rolling sending mechanism, a paper supporting mechanism and a limiting mechanism; the rolling sending mechanism comprises a sending wheel 2, a sending shaft 3, a sending driving mechanism and a negative pressure mechanism; the sending wheel 2 is provided with multiple groups and each group comprises multiple sending wheels 2; the sending wheel 2 is a hollow structure, and the wheel surface of the sending wheel 2 is provided with multiple uniformly distributed first negative pressure holes 2-1; the feeding and sending platform 1 is provided with multiple first avoidance holes for avoiding the sending wheel 2; the part of the sending wheel 2 extends to the feeding and sending platform 1 through the first avoidance holes; the sending shaft 3 is provided with multiple and arranged in a straight line along the horizontal direction; multiple groups of sending wheels 2 are coaxially fixed on multiple sending shafts 3 respectively; multiple sending wheels 2 of the same group are uniformly arranged along the axial direction of the corresponding sending shaft 3; the sending shaft 3 is a hollow structure, and the inner cavity of the sending shaft 3 is connected with the inner cavity of the corresponding sending wheel 2. The driving end of the sending driving mechanism is connected to the sending shaft 3; specifically, the structure of the sending driving mechanism can refer to the prior art.

[0038] See also Figure 2-4 The negative pressure mechanism includes a negative pressure shaft 4, a negative pressure wheel 5 and a negative pressure machine (not shown in the figure, refer to the prior art); the number of the negative pressure shafts 4 is the same as the number of the sending shafts 3 and they are fixedly sleeved in the sending shaft 3, and a negative pressure channel is provided in the negative pressure shaft 4, one end of the negative pressure channel is connected to the negative pressure machine through a negative pressure pipeline 6; the number of the negative pressure wheels 5 is the same as the number of the sending wheels 2, and the negative pressure wheel 5 is fixedly arranged on the corresponding negative pressure shaft 4 and is located in the sending wheel 2; a second negative pressure hole 5-1 connected to the negative pressure channel is provided on the wheel surface of the negative pressure wheel 5, and the second negative pressure hole 5-1 extends vertically; in the circumferential direction, the length of the second negative pressure hole 5-1 is greater than the length of the first negative pressure hole 2-1.

[0039] Among them, in the same group of sending wheels 2, the first negative pressure holes 2-1 of two adjacent sending wheels 2 are staggered. In this way, the corrugated paper can be adsorbed and transported alternately, the connection distance can be reduced, and the transportation efficiency can be improved.

[0040] Furthermore, in the same group of two adjacent sending wheels 2, the first negative pressure hole 2-1 of at least one sending wheel 2 is connected to the second negative pressure hole 5-1 of the corresponding negative pressure wheel 5. In this way, seamless connection can be achieved, and the two sending wheels 2 can absorb and transport the corrugated paper in turn, which is conducive to improving the transportation efficiency.

[0041] See also Figure 2-7, the paper supporting mechanism includes a supporting wheel 7, a bracket 8 and a lifting drive mechanism; the supporting wheel 7 is provided with multiple groups and each group includes multiple supporting wheels 7; the bracket 8 is provided with multiple groups of paper supporting mounting parts 8-1, and the arrangement direction of the multiple groups of paper supporting mounting parts 8-1 is the same as the arrangement direction of the multiple groups of sending wheels 2; the multiple groups of paper supporting mounting parts 8-1 are staggered with the multiple groups of sending wheels 2; each group of paper supporting mounting parts 8-1 includes multiple paper supporting mounting parts 8-1; the multiple groups of supporting wheels 7 are rotatably connected to the paper supporting mounting parts 8-1 of the multiple groups of brackets 8 respectively; in the sending direction of the corrugated paper, the height of the supporting wheel 7 decreases successively; the driving end of the lifting drive mechanism is connected to the bracket 8; the loading and sending platform 1 is provided with multiple second avoidance holes for avoiding the supporting wheels 7 and the paper supporting mounting parts 8-1. Through the above structure, the bracket 8 is driven to move downward by the lifting drive mechanism, so that the corrugated paper at the bottom falls on the sending wheel 2, such as Figure 5-6 When the sending wheel 2 drives the corrugated paper at the bottom to move forward, the other corrugated paper above remains stationary, so the penultimate corrugated paper at the bottom gradually appears; at this time, the lifting drive mechanism drives the bracket 8 to move upward, so that the highest support wheel 7 is pressed against the bottom surface of the penultimate corrugated paper below, so that the support wheel 7 supports one end of the upper corrugated paper, as shown in FIG. Figure 7 , can reduce the weight of the upper corrugated paper pressing on the lowermost corrugated paper, which is beneficial to reduce the resistance of transportation and ensure that the lowermost corrugated paper can be smoothly transported out. Furthermore, since the height of the supporting wheel 7 is successively reduced in the direction of sending the corrugated paper, the lifting drive mechanism continues to drive the bracket 8 upward in sequence according to the speed at which the second to last corrugated paper at the bottom appears, so that the supporting wheels 7 of other groups successively support the second to last corrugated paper at the bottom, thereby gradually reducing the weight of the upper corrugated paper, further ensuring that the transportation work is successfully completed.

[0042] Furthermore, a plurality of spring mounting parts 8-2 are provided at the lower end of the bracket 8, and the spring mounting part 8-2 can movably pass through the transverse mounting plate of the loading and sending platform 1, and two limiting rings are provided on the spring mounting part 8-2, which are respectively located above and below the transverse mounting plate; a paper supporting spring 9 is sleeved on the spring mounting part 8-2, and the two ends of the paper supporting spring 9 are respectively pressed against the loading and sending platform 1 and the limiting ring located below.

[0043] Furthermore, the lifting drive mechanism includes a lifting drive cylinder 10 , and a telescopic rod of the lifting drive cylinder 10 is fixedly connected to the bracket 8 .

[0044] See also Figure 1The limiting mechanism includes a front limiting mechanism, which includes a front limiting baffle 11; the front limiting baffle 11 is fixedly arranged on the limiting frame 12 and is located above the front end of the feeding and sending platform 1, and a sending channel for a corrugated paper to pass through is provided between the front limiting baffle 11 and the surface of the feeding and sending platform 1.

[0045] See also Figure 1 The limiting mechanism also includes a left limiting mechanism and a right limiting mechanism; the left limiting mechanism includes a left limiting baffle 13 and a left adjusting drive mechanism; the left adjusting drive mechanism includes a left adjusting drive motor 14 and a left adjusting transmission assembly; the left adjusting drive motor 14 is arranged on the limiting frame 12; the left adjusting transmission assembly includes a left adjusting screw 15 and a left adjusting screw nut; the left adjusting screw nut is connected to the left limiting baffle 13; the right limiting mechanism includes a right limiting baffle 16 and a right adjusting drive mechanism; the right adjusting drive mechanism includes a right adjusting drive motor 17 and a right adjusting transmission assembly; the right adjusting drive motor 17 is arranged on the limiting frame 12; the right adjusting transmission assembly includes a right adjusting screw 18 and a right adjusting screw nut; the right adjusting screw nut is connected to the right limiting baffle 16.

[0046] See also Figure 1 , a rear supporting mechanism for supporting one end of the upper corrugated paper is provided at the rear of the feeding and sending platform 1, and the rear supporting mechanism includes a rear supporting frame 19, a rear supporting plate 20 and a rear supporting driving mechanism; the rear supporting plate 20 is vertically arranged on the rear supporting driving mechanism, and the top of the rear supporting plate 20 is inclined toward the side away from the feeding and sending platform 1. Through the above structure, one end of the upper part of the corrugated paper can be tilted against the top of the rear supporting plate 20 to reduce the conveying resistance below; when the corrugated paper below is almost sent, the rear supporting plate 20 is driven away from the feeding and sending platform 1 by the rear supporting driving mechanism, so that the corrugated paper leaning on the rear supporting plate 20 is stacked downward, thereby realizing continuous paper feeding.

[0047] Furthermore, the rear support driving mechanism includes a mounting seat 21, a rear support driving motor 22 and a rear support transmission assembly; the rear support transmission assembly includes a gear and a rack, the rack is arranged on the mounting seat 21, and the gear is connected to the output shaft of the rear support driving motor 22; the rear support plate 20 and the rear support driving motor 22 are both arranged on the mounting seat 21.

[0048] Furthermore, a guide structure is provided between the mounting seat 21 and the rear support frame 19, and the guide structure includes a guide rail and a slider.

[0049] See also Figure 1-2, the head end of the negative pressure shaft 4 is provided with an electromagnetic valve 23; the lower part of the sending rotating shaft 3 is provided with a distance sensor for detecting the distance of the upper corrugated paper. In this way, the distance of the upper corrugated paper is detected in real time by the distance sensor. When the corrugated paper falls on the sending wheel 2, the distance detected by the distance sensor is the distance to the lowest corrugated paper; as the corrugated paper is transported forward, when the distance detected by the distance sensor becomes larger and the amplitude of the change is approximately equal to the thickness of the corrugated paper, it means that the lowest corrugated paper has left the current sending wheel 2, and at this time, the distance detected by the distance sensor is the distance to the second to last corrugated paper below; the electromagnetic valve 23 of the negative pressure shaft 4 corresponding to the sending wheel 2 is closed by the controller, so that the group of negative pressure shafts 4 and negative pressure wheels 5 stop working, thereby further saving energy consumption.

[0050] See also Figure 1-4 The working principle of the corrugated paper feeding and sending device of this embodiment is as follows:

[0051] During operation, the corrugated paper to be sent is stacked on the paper supporting mechanism, and the corrugated paper to be sent is driven to move downward by the paper supporting mechanism, so that the corrugated paper at the bottom falls on the sending wheel 2; at the same time, the sending shaft 3 is driven to rotate by the sending driving mechanism, and then the sending wheel 2 is driven to rotate; at the same time, negative pressure is generated by the negative pressure machine, and the negative pressure is transmitted to the negative pressure channel of the negative pressure shaft 4 and the second negative pressure hole 5-1 of the negative pressure wheel 5 through the negative pressure pipeline 6; when the first negative pressure hole 2-1 of the sending wheel 2 rotates to the top of the second negative pressure hole 5-1, the first negative pressure hole 2-1 is connected with the second negative pressure hole 5-1, and at this time, the negative pressure is transmitted to the first negative pressure hole 2-1, and then the first negative pressure hole 2-1 adsorbs the corrugated paper at the bottom, and drives the corrugated paper to be transported forward a certain distance; according to the above operation, the first negative pressure hole 2-1 of the sending wheel 2 acts on the corrugated paper at the bottom in turn, and the corrugated paper can be smoothly sent out, thereby completing the feeding work.

[0052] The above is a preferred embodiment of the present invention, but the embodiment of the present invention is not limited to the above content. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principles of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A corrugated paper feeding and sending device, comprising a feeding and sending platform, a rolling sending mechanism and a paper supporting mechanism; characterized in that: The rolling sending mechanism includes a sending wheel, a sending shaft, a sending driving mechanism and a negative pressure mechanism; The sending wheel is provided with multiple groups and each group includes multiple sending wheels; the sending wheel is a hollow structure, and the wheel surface of the sending wheel is provided with multiple evenly distributed first negative pressure holes; the feeding and sending platform is provided with multiple first avoidance holes for avoiding the sending wheels; a part of the sending wheel passes through the first avoidance holes and extends to the feeding and sending platform; the sending shaft is provided with multiple and arranged in a straight line along the horizontal direction; multiple groups of sending wheels are coaxially fixed on multiple sending shafts respectively; multiple sending wheels in the same group are evenly arranged along the axial direction of the corresponding sending shaft; the sending shaft is a hollow structure, and the inner cavity of the sending shaft is connected with the inner cavity of the corresponding sending wheel; The driving end of the sending driving mechanism is connected to the sending rotating shaft; The negative pressure mechanism includes a negative pressure shaft, a negative pressure wheel and a negative pressure machine; the number of the negative pressure shafts is the same as the number of the sending shafts and they are fixedly sleeved in the sending shaft, a negative pressure channel is provided in the negative pressure shaft, one end of the negative pressure channel is connected to the negative pressure machine through a negative pressure pipeline; the number of the negative pressure wheels is the same as the number of the sending wheels, the negative pressure wheels are fixedly arranged on the corresponding negative pressure shafts and are located in the sending wheel; a second negative pressure hole connected to the negative pressure channel is provided on the wheel surface of the negative pressure wheel, and the second negative pressure hole extends vertically.

2. The corrugated paper feeding and sending device according to claim 1, characterized in that: In the same group of transmitting wheels, the first negative pressure holes of two adjacent transmitting wheels are staggered; In the same group of two adjacent transmitting wheels, the first negative pressure hole of at least one transmitting wheel is connected to the second negative pressure hole of the corresponding negative pressure wheel.

3. The corrugated paper feeding and sending device according to claim 1, characterized in that: A solenoid valve is arranged at the head end of the negative pressure shaft; and a distance sensor for detecting the distance to the upper corrugated paper is arranged below the sending rotating shaft.

4. The corrugated paper feeding and sending device according to claim 1, characterized in that: The paper supporting mechanism includes supporting wheels, a bracket and a lifting drive mechanism; the supporting wheels are provided with multiple groups and each group includes multiple supporting wheels; the bracket is provided with multiple groups of paper supporting mounting parts, and the arrangement direction of the multiple groups of paper supporting mounting parts is the same as the arrangement direction of the multiple groups of sending wheels; the multiple groups of paper supporting mounting parts are arranged alternately with the multiple groups of sending wheels; each group of paper supporting mounting parts includes multiple paper supporting mounting parts; the multiple groups of supporting wheels are rotatably connected to the paper supporting mounting parts of the multiple groups of brackets respectively; in the sending direction of corrugated paper, the height of the supporting wheels decreases successively; the driving end of the lifting drive mechanism is connected to the bracket; the loading and sending platform is provided with multiple second avoidance holes for avoiding supporting wheels and paper supporting mounting parts.

5. The corrugated paper feeding and sending device according to claim 4, characterized in that: A plurality of spring mounting parts are provided at the lower end of the bracket, and the spring mounting parts can movably pass through the transverse mounting plate of the feeding and sending platform, and the spring mounting parts are provided with two limiting rings respectively located above and below the transverse mounting plate; a paper supporting spring is sleeved on the spring mounting parts, and the two ends of the paper supporting spring are respectively pressed against the feeding and sending platform and the limiting ring located below.

6. The corrugated paper feeding and sending device according to claim 1, characterized in that: It also includes a limiting mechanism, which includes a front limiting mechanism, and the front limiting mechanism includes a front limiting baffle; the front limiting baffle is fixedly arranged on the limiting frame and is located above the front end of the loading and sending platform, and a sending channel for a corrugated paper to pass through is provided between the front limiting baffle and the surface of the loading and sending platform.

7. The corrugated paper feeding and sending device according to claim 6, characterized in that: The limiting mechanism also includes a left limiting mechanism, which includes a left limiting baffle and a left adjusting drive mechanism; the left adjusting drive mechanism includes a left adjusting drive motor and a left adjusting transmission assembly; the left adjusting drive motor is arranged on a limiting frame; the left adjusting transmission assembly includes a left adjusting screw and a left adjusting screw nut; the left adjusting screw nut is connected to the left limiting baffle.

8. The corrugated paper feeding and sending device according to claim 6, characterized in that: The limiting mechanism also includes a right limiting mechanism, which includes a right limiting baffle and a right adjusting drive mechanism; the right adjusting drive mechanism includes a right adjusting drive motor and a right adjusting transmission assembly; the right adjusting drive motor is arranged on the limiting frame; the right adjusting transmission assembly includes a right adjusting screw and a right adjusting screw nut; the right adjusting screw nut is connected to the right limiting baffle.

9. The corrugated paper feeding and sending device according to claim 1, characterized in that: A rear supporting mechanism for supporting one end of the corrugated paper above is provided at the rear of the feeding and sending platform, and the rear supporting mechanism includes a rear supporting frame, a rear supporting plate and a rear supporting driving mechanism; the rear supporting plate is vertically arranged on the rear supporting driving mechanism, and the top of the rear supporting plate is inclined toward the side away from the feeding and sending platform.

10. The corrugated paper feeding and sending device according to claim 9, characterized in that: The rear support driving mechanism includes a mounting seat, a rear support driving motor and a rear support transmission assembly; the rear support transmission assembly includes a gear and a rack, the rack is arranged on the mounting seat, and the gear is connected to the output shaft of the rear support driving motor; the rear support plate and the rear support driving motor are both arranged on the mounting seat.

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