Automatic paper feeding machine of full-automatic carton production line

Abstract

The full-automatic carton production line automatic paper feeding machine comprises a paper stacking mechanism, a paper feeding mechanism and an adjusting mechanism, the paper stacking mechanism is arranged at the output end of a paperboard processing machine, and the paper feeding mechanism is arranged on the side, away from the paperboard processing machine, of the paper stacking mechanism and used for conveying paperboards into the paper stacking mechanism; the paper stacking mechanism is used for receiving the paperboards fed by the paper feeding mechanism and stacking the paperboards in order, through cooperation of the paper stacking mechanism and the paper feeding mechanism, the paperboards need to be manually fed step by step during feeding, the automation degree of equipment is increased, and the labor cost is reduced.

Description

Technical Field

[0001] The invention relates to paperboard production equipment, in particular to an automatic paper loading machine for a full-automatic carton production line. Background Art

[0002] At present, a Chinese patent with announcement number CN217201019U discloses a cardboard feeding mechanism, including a workbench, a horizontal plate, a pushing mechanism arranged between the two horizontal plates and a feeding mechanism arranged on the workbench, the pushing mechanism pushes neatly stacked cardboards toward a cardboard processing machine, and the feeding mechanism feeds a layer of neatly stacked cardboards close to the workbench into the cardboard processing machine.

[0003] The above patent still has shortcomings. The above cardboard loading mechanism requires manual stacking of cardboards on the upper end of the feeding mechanism. When the feeding speed of the feeding mechanism is fast, operators are still required to place the cardboards quickly and neatly. When processing larger cardboards, multiple operators are required to stack them. The degree of automation is low and the work intensity of the operators is high. Summary of the invention

[0004] In view of this, an object of the present invention is to provide an automatic paper feeding machine for a fully automatic carton production line, which has the advantage of a high degree of automation.

[0005] In order to solve the above technical problems, the technical solution of the present invention is: an automatic paper feeding machine for a fully automatic carton production line, comprising a paper stacking mechanism, a paper feeding mechanism and an adjusting mechanism, wherein the adjusting mechanism is used to drive the paper feeding mechanism to move, the paper stacking mechanism is arranged at the output end of a cardboard processing machine, the paper feeding mechanism is arranged on the side of the paper stacking mechanism away from the cardboard processing machine, and is used to transport cardboard toward the paper stacking mechanism, the paper stacking mechanism is used to receive the cardboard fed by the paper feeding mechanism and stack the cardboard neatly, the paper feeding mechanism comprises a frame, a conveyor belt assembly 1, a flip loading assembly and a discharge assembly, the conveyor belt assembly 1 is arranged on the frame, the flip loading assembly is arranged on the side of the frame away from the paper stacking mechanism, and is used to place the cardboard stack on the conveyor belt assembly 1, and the discharge assembly cooperates with the conveyor belt assembly 1 to arrange the cardboard stack into a fish scale shape and continuously feed it into the paper stacking mechanism.

[0006] Through the above-mentioned technical means, through the cooperation of the paper stacking mechanism and the paper feeding mechanism, the cardboard needs to be loaded step by step manually during loading, thereby increasing the degree of automation of the equipment and reducing labor costs. By setting a rotating loading mechanism, the cardboard stacks are automatically stacked on the conveyor belt component 1, and the cardboard stacks are arranged in a fish scale shape through the discharge component and continuously fed into the paper stacking mechanism. By setting a paper stacking mechanism to receive the cardboard, the position of the cardboard is controlled and the cardboard is leveled and aligned, thereby improving the accuracy of subsequent processing of the cardboard.

[0007] Preferably, the paper stacking mechanism includes a limit component 1, a limit component 2, a conveyor belt component 2 and a support component. The support component, the conveyor belt component 2 and the limit component 1 constitute a loading chamber 1. The adjustment mechanism is used to adjust the width of the loading chamber 1. The loading chamber 1 is used to stack cardboard that needs to enter the cardboard processing machine. The limit component 1 is used to limit the position of the cardboard X-axis. The limit component 2 cooperates with the limit component 1 to limit the position of the cardboard Y-axis. The conveyor belt component 2 is used to feed a single piece of cardboard into the cardboard processing machine.

[0008] Through the above technical means, the cardboards falling into the feeding chamber 1 are stacked neatly through the limiting components 1 and 2, thereby improving the subsequent cutting and painting accuracy and increasing the yield rate of the cardboards.

[0009] Preferably, the limit assembly 1 includes a linear slide rail 1, a screw motor 1 and a screw motor 2, a side baffle 1 is fixedly provided at one end of the linear slide rail 1, a side baffle 2 is also provided on the linear slide rail 1, the screw motor 1 drives the side baffle 2 to move along the linear slide rail 1, a rear baffle 1 and a rear baffle 2 are also provided on the linear slide rail 1, the rear baffle 1 is fixed on the linear slide rail 1, and the screw motor 2 drives the rear baffle 2 to slide on the linear slide rail 1.

[0010] Through the above technical means, the side baffle plate 2 is driven to move by the lead screw motor 1, so that the length of the feeding chamber 1 can be adjusted, so that the equipment is suitable for cardboards of various sizes.

[0011] Preferably, guide surfaces are provided on the side baffle plate 1 and the side baffle plate 2, a slider is provided at the tail of the side baffle plate 2, the linear guide rail 1 and the lead screw motor 1 are both matched with the slider, and a pressure sensor 1 is also provided between the side baffle plate 2 and the slider.

[0012] Through the above technical means, by setting the guide surface, the phenomenon of cardboard jamming is reduced, and by setting the pressure sensor, the side baffle plate is prevented from crushing the cardboard, the defective rate of the cardboard is reduced, and the cardboard with different lengths is automatically adapted.

[0013] Preferably, the second limiting component includes a linear electric cylinder, and an output end of the linear electric cylinder is provided with an angle push plate, and the linear electric cylinder drives the angle push plate to move and press the cardboard against the rear baffles one and two, and the supporting component includes a base block and a support plate, and the support plate is arranged on the base block, and the height of the support plate is flush with the conveyor belt component two.

[0014] Through the above technical means, by setting the angle push plate, the problem of paperboard being misplaced when entering the feeding cavity can be prevented.

[0015] Preferably, the adjustment mechanism includes a sliding frame and a screw motor three, the screw motor three includes a reduction motor and a screw lever, the screw lever includes a first threaded portion, a second threaded portion and a third threaded portion, the second threaded portion has a thread direction opposite to the first threaded portion and the third threaded portion, the discharge assembly is threadedly connected to the second threaded portion, the frame and the support assembly are threadedly connected to the first threaded portion and the third threaded portion, a linear guide rail two is provided at the bottom of the sliding frame, and the frame, the support assembly and the discharge assembly all slideably cooperate with the linear guide rail two.

[0016] Through the above technical means, by setting the first threaded portion, the second threaded portion and the third threaded portion, and making the thread direction of the second threaded portion opposite to the first threaded portion and the third threaded portion, when the discharge assembly presses the cardboard pile, the frame and the support assembly move in the opposite direction, thereby changing the width of the feeding chamber 1 and the distance from the frame to the feeding chamber 1, thereby achieving the purpose of automatically adjusting the distance of the feeding chamber 1 according to the width of the cardboard.

[0017] Preferably, both ends of the second threaded portion are provided with a hexagonal slot 1, a hexagonal connecting rod is slidably arranged in the hexagonal slot 1, the end faces of the first threaded portion and the third threaded portion are provided with a hexagonal slot 2, both ends of the hexagonal connecting rod are respectively provided with a first hexagonal head and a second hexagonal head, and the sliding frame is also provided with a plurality of linear cylinders for driving the hexagonal connecting rod to move and a reduction motor for independently driving the second threaded portion to rotate.

[0018] Through the above technical means, the hexagonal connecting rod is driven to move by the linear cylinder, thereby realizing the connection and disconnection of the second threaded portion and the other threaded portions, and the second threaded portion is driven to rotate by the reduction motor, thereby realizing the function of individually controlling the movement of the discharge assembly, and achieving the function of simultaneously loading multiple cardboard stacks.

[0019] Preferably, the discharge assembly includes a discharge rack, a front discharge push plate and a side discharge push plate, the front discharge push plate is arranged on the discharge rack, a linear electric cylinder 2 is arranged at the tail end of the side discharge push plate, which is arranged at the side end of the cardboard stack, the adjustment mechanism drives the discharge rack to move, a plate groove is also arranged between the discharge rack and the arrangement push plate, and a pressure sensor 2 is also arranged between the discharge rack and the arrangement push plate.

[0020] Through the above technical means, through the cooperation between the front discharge push plate and the side discharge push plate, the XY axis basic positioning of the cardboard stack is completed, providing basic coordinates for subsequent loading, and by setting the second pressure sensor, the front discharge push plate is prevented from crushing the cardboard.

[0021] Compared with the prior art, the present invention has the following beneficial effects: 1. Through the cooperation of the paper stacking mechanism and the paper feeding mechanism, the paperboard needs to be loaded step by step manually during loading, which increases the automation of the equipment and reduces labor costs; 2. By setting the first thread part, the second thread part and the third thread part, and making the thread direction of the second thread part opposite to the first thread part and the third thread part, the width of the first feeding chamber and the distance from the frame to the first feeding chamber are changed, and at the same time, the distance that the linear electric cylinder pushes the angle push plate does not need to be modified, thereby ensuring the stability of the cardboard entering the feeding chamber; 3. By setting pressure sensor 1 and pressure sensor 2, when cardboards of different sizes need to be replaced, no manual intervention is required. The length position can be directly modified through pressure sensor 1, and the width setting of the equipment can be directly adjusted through the cooperation between pressure sensor 2 and the wire lever. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of embodiment 1; Figure 2 is a cross-sectional schematic diagram of embodiment 1; Figure 3 It is a structural schematic diagram of a paper stacking mechanism; Figure 4 It is a partial schematic diagram of the first embodiment; Figure 5 It is a structural diagram of the regulating mechanism; Figure 6 It is a structural schematic diagram of Embodiment 2; Figure 7 It is a partial cross-sectional view of the second embodiment.

[0023] Figure numerals: 1, paper stacking mechanism; 2, paper feeding mechanism; 3, adjustment mechanism; 4, cardboard processing machine; 5, frame; 6, conveyor belt assembly 1; 7, flip loading assembly; 8, discharge assembly; 9, loading rack; 10, clamping cylinder; 11, lifting rack; 12, side plate; 13, discharge rack; 14, front discharge push plate; 15, side discharge push plate; 16, linear electric cylinder 2; 17, plate discharge slot; 18, pressure sensor 2; 19, limit assembly 1; 20, limit assembly 2; 21, conveyor belt assembly 2; 22, support assembly; 23, loading chamber 1; 24, linear slide rail 1; 25, screw motor 1; 26, screw motor 2; 27, side baffle 1; 28. Side baffle two; 29. ​​Rear baffle one; 30. Rear baffle two; 31. Guide surface; 32. Sliding block; 33. Pressure sensor one; 34. Linear electric cylinder one; 35. Angle push plate; 36. Base block; 37. Support plate; 38. Sliding frame; 39. Screw motor three; 40. Reducer motor; 41. Screw lever; 42. First threaded portion; 43. Second threaded portion; 44. Third threaded portion; 45. Linear guide rail two; 46. Hexagonal slot one; 47. Hexagonal connecting rod; 48. Hexagonal slot two; 49. First hexagonal head; 50. Second hexagonal head; 51. Push ring; 52. Limit clamp; 53. Gear; 54. Linear cylinder; 90. Cardboard. DETAILED DESCRIPTION

[0024] The specific implementation modes of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp.

[0025] Embodiment 1:

[0026] A fully automatic paper loading machine for a carton production line, such as Figure 1 As shown, it includes a paper stacking mechanism 1, a paper feeding mechanism 2 and an adjusting mechanism 3. The adjusting mechanism 3 is used to drive the paper feeding mechanism 2 to move. The paper stacking mechanism 1 is arranged at the output end of the cardboard 90 processing machine 4. The paper feeding mechanism 2 is arranged on the side of the paper stacking mechanism 1 away from the cardboard 90 processing machine 4 and is used to transport the cardboard 90 toward the paper stacking mechanism 1. The paper stacking mechanism 1 is used to receive the cardboard 90 fed by the paper feeding mechanism 2 and stack the cardboard 90 neatly.

[0027] like Figure 2 As shown, the paper feeding mechanism 2 includes a frame 5, a conveyor belt assembly 6, a flip loading assembly 7 and a discharge assembly 8. The conveyor belt assembly 6 is arranged on the frame 5, which includes a conveyor roller, a belt, a motor, etc., which is the prior art and will not be elaborated on here. The flip loading assembly 7 is arranged on the side of the frame 5 away from the paper stacking mechanism 1, and includes a loading rack 9, a clamping cylinder 10, a lifting rack 11 and a side plate 12. The loading rack 9 is rotatably arranged on the side plate 12, which can drive the cardboard 90 stacks to rotate together and place them on the conveyor belt assembly 6. The clamping cylinder 10 is arranged at the upper end of the loading rack 9, and a screw motor 4 is arranged at the tail of the lifting rack 11. The screw motor 4 drives the lifting rack 11 to move along the height direction of the loading rack 9. When the clamping cylinder 10 is extended, the lifting rack 11 moves to clamp the cardboard 90 stacks in the loading rack 9. The discharge assembly 8 cooperates with the conveyor belt assembly 6 to arrange the cardboard 90 stacks into fish scales and continuously feed them into the paper stacking mechanism 1.

[0028] like Figure 1 , Figure 2 As shown, the discharging assembly 8 includes a discharging frame 13, a positive discharging push plate 14 and a side discharging push plate 15. The positive discharging push plate 14 is arranged on the discharging frame 13. A linear electric cylinder 16 is arranged at the tail of the side arrangement push plate. The linear electric cylinder 16 is fixedly arranged on the side plate 12. The side arrangement push plate is arranged at the side end of the cardboard stack 90 and adjusts the X-axis direction position of the cardboard stack 90. ​​The adjustment mechanism 3 drives the discharging frame 13 to move, so that the positive discharging push plate 14 adjusts the Y-axis direction position of the cardboard stack 90. ​​A plate arrangement groove 17 is also arranged between the arrangement push plate and the conveyor belt assembly 16. The cardboard 90 is stacked in a fish scale shape when discharged from the plate arrangement groove 17. A pressure sensor 18 is also arranged between the discharging frame 13 and the arrangement push plate. When the pressure sensor senses a certain pressure, the adjustment mechanism 3 stops moving the discharging frame 13 to prevent the positive material push plate from crushing the cardboard 90.

[0029] like Figure 2 , Figure 3 , Figure 4 As shown, the paper stacking mechanism 1 includes a limiting component 19, a limiting component 20, a conveyor belt component 21 and a support component 22. The support component 22, the conveyor belt component 21 and the limiting component 19 form a loading chamber 23. The loading chamber 23 is used to stack the cardboard 90 that needs to enter the cardboard 90 processing machine 4. The conveyor belt component 21 is connected to the conveyor belt component 16 and is used to feed the cardboard 90 into the subsequent printing machine or cutting machine. The limiting component 19 is used to limit the position of the X axis of the cardboard 90. Component 19 includes a linear slide 1 24, a screw motor 1 25 and a screw motor 26. A side baffle 1 27 is fixedly provided at one end of the linear slide 1 24. A side baffle 28 is also provided on the linear slide 1 24. The screw motor 1 25 drives the side baffle 28 to move along the linear slide 1 24. A rear baffle 1 29 and a rear baffle 2 30 are also provided on the linear slide 1 24. The rear baffle 1 29 is fixed on the linear slide 1 24. The screw motor 26 drives the rear baffle 2 30 to slide on the linear slide 1 24.

[0030] When the cardboard 90 falls from the conveyor assembly 6 into the loading chamber 23, the position of the cardboard 90 may be offset, resulting in deviations in subsequent printing and cutting. The lead screw motor 25 drives the side baffle 28 to move along the linear slide rail 24, so that the side baffle 28 intermittently pushes the cardboard 90 to move, so that the cardboard 90 that has just fallen is aligned with the cardboard 90 that has fallen before and pressed against the side baffle 27, thereby reducing the error in the X-axis direction.

[0031] Guide surfaces 31 are provided on both the side baffle 1 27 and the side baffle 2 28 to reduce the phenomenon of cardboard 90 getting stuck. A slider 32 is provided at the tail of the side baffle 28. The linear guide rail 1 24 and the lead screw motor 1 25 cooperate with the slider 32. A pressure sensor 1 33 is also provided between the side baffle 28 and the slider 32 to prevent the side baffle 28 from crushing the cardboard 90 and reduce the defective rate of the cardboard 90.

[0032] The limit component 20 cooperates with the limit component 19 to limit the Y-axis position of the cardboard 90. The limit component 20 includes a linear electric cylinder 34. The output end of the linear electric cylinder 34 is provided with a folded push plate 35. The folded push plate 35 is provided to prevent the cardboard 90 from being misplaced when entering the loading chamber 23, causing the cardboard 90 to be stuck between the push plate and the linear electric cylinder 34. The linear electric cylinder 34 drives the folded push plate 35 to move and press the cardboard 90 against the rear baffle 1 29 and the rear baffle 2 30, so as to push the cardboard 90 at a higher position, thereby reducing the error in the Y-axis direction. The support component 22 includes a base block 36 and a support plate 37. The support plate 37 is arranged on the base block 36. The height of the support plate 37 is flush with the conveyor belt component 21. The support plate 37 and the rear baffle 1 29 and the rear baffle 2 30 form a limit on the Y-axis of the cardboard 90.

[0033] like Figure 5 As shown, the adjustment mechanism 3 includes a sliding frame 38 and a screw motor 39, the screw motor 39 includes a reduction motor 40 and a screw lever 41, the screw lever 41 includes a first threaded portion 42, a second threaded portion 43 and a third threaded portion 44, the second threaded portion 43 is opposite to the first threaded portion 42 and the third threaded portion 44 in thread direction, the discharge frame 13 is threadedly connected with the second threaded portion 43, the frame 5 and the base block 36 are connected with the first threaded portion 42 and the third threaded portion 44, a linear guide rail 2 45 is provided at the bottom of the sliding frame 38, the frame 5, the base block 36 and the discharge frame 13 are all slidably matched with the linear guide rail 2 45, when the discharge frame 13 moves to make the positive discharge push plate 14 move toward the direction of the cardboard 90 pile, the frame 5 and the support assembly 22 move in the opposite direction, and the frame 5 and the base block 36 are moved to corresponding positions, when the width and length of the cardboard 90 increase, the reduction motor 40 is advanced through the pressure sensor 2 18. Stop rotating, and at the same time, the positive discharge push plate 14 stops moving in advance. At this time, the positions of the frame 5 and the base block 36 are also changed relatively, so as to achieve the purpose of automatically adjusting the distance of the loading chamber 23 according to the width of the cardboard 90. When the pressure sensor 33 is triggered, the control system of the equipment will receive the signal of changing the cardboard 90 blank, and by calculating the material transportation speed of the conveyor belt assembly 6, the approximate time of the new cardboard 90 entering the loading chamber 23 can be known. At this time, the screw motor 25 will drive the side baffle 28 to move until the pressure sensor 33 is triggered, so as to detect the new number of revolutions that the screw motor 25 needs to rotate. At this time, when the number of revolutions of the screw motor 25 is the same as the original number of revolutions, the control system will drive the screw motor to repeat the detection step. When the number of revolutions of the screw motor 25 is different from the original number of revolutions, the control system will update the number of revolutions of the screw motor 25, so as to know the change in the width of the cardboard 90.

[0034] Embodiment 2:

[0035] The difference between the second embodiment and the first embodiment is that Figure 6 , Figure 7 As shown, both ends of the second threaded portion 43 are provided with a hexagonal slot 46, and a hexagonal connecting rod 47 is slidably arranged in the hexagonal slot 46. The end faces of the first threaded portion 42 and the third threaded portion 44 are provided with a hexagonal slot 48. The two ends of the hexagonal connecting rod 47 are respectively provided with a first hexagonal head 49 and a second hexagonal head 50. The sliding frame 38 is also provided with a plurality of linear cylinders 54 for driving the hexagonal connecting rod 47 to move and a motor for independently driving the second threaded portion 43 to rotate. A push ring 51 is provided on the hexagonal connecting rod 47, and a limit clamp 52 cooperating with the push ring 51 is provided at the output end of the linear cylinder 54. The push ring 51 and the limit clamp 52 are rotatably matched. A gear 53 is also provided on the second threaded portion 43, and a gear 53 is also provided at the output end of the reduction motor 40, thereby driving the second threaded portion 43 to rotate.

[0036] To ensure the continuity of feeding, the hexagonal connecting rod 47 is pushed by the linear cylinder 54 to disengage the second hexagonal head 50 from the hexagonal slot 2 48, so that the second threaded portion 43 is disengaged from the first threaded portion 42. At the same time, the second threaded portion 43 is independently controlled to rotate by the reduction motor 40. When the cardboard 90 stack is being discharged, the discharge rack 13, the positive discharge push plate 14 and the cardboard 90 stack being discharged can be moved toward the paper stacking mechanism 1 together. At this time, the number of rotations can be recorded, and then the new cardboard 90 stack can be turned over to the top of the conveyor belt assembly by turning over the loading assembly 7. When the cardboard 90 stack being discharged is discharged, the reduction motor 40 controls the second threaded portion 43 to rotate and reset. After reaching the previous number of rotations, if the pressure sensor 2 18 is touched If the pressure sensor 18 is triggered before the recorded number of turns, it means that the cardboard 90 with a larger width has not changed. If the pressure sensor 18 is triggered before the recorded number of turns, it means that the cardboard 90 with a larger width has been replaced. At this time, it is necessary to perform distance compensation according to the difference between the recorded number of turns and the actual number of turns, that is, all the threaded parts are connected by the hexagonal connecting rod 47 and moved in the opposite direction by the difference distance, and then the second threaded part 43 is controlled separately to press against the stack of cardboards 90. At this time, the frame 5 and the base block 36 are both adjusted. If the pressure sensor is not triggered when the recorded number of turns is rotated, it means that the cardboard 90 with a smaller width has been replaced. At this time, the linear push rod pushes the hexagonal connecting rod 47 to connect all the threaded parts, and then drives the positive discharge push plate 14 to move toward the new stack of cardboards 90, so that the adjustment of the frame 5 and the base block 36 can be completed.

[0037] Of course, the above are only typical examples of the present invention. In addition, the present invention may also have many other specific implementations. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. An automatic paper feeding machine for a fully automatic carton production line, characterized by: The invention comprises a paper stacking mechanism (1), a paper feeding mechanism (2) and an adjusting mechanism (3), wherein the adjusting mechanism (3) is used to drive the paper feeding mechanism (2) to move, the paper stacking mechanism (1) is arranged at the output end of a paperboard (90) processing machine (4), the paper feeding mechanism (2) is arranged on the side of the paper stacking mechanism (1) away from the paperboard (90) processing machine (4) and is used to transport the paperboard (90) toward the inside of the paper stacking mechanism (1), and the paper stacking mechanism (1) is used to receive the paperboard (90) fed in by the paper feeding mechanism (2) and make the paperboard (90) The stacking is neat, and the paper feeding mechanism (2) comprises a frame (5), a conveyor belt assembly (6), a flip loading assembly (7) and a discharge assembly (8). The conveyor belt assembly (6) is arranged on the frame (5), and the flip loading assembly (7) is arranged on the side of the frame (5) away from the paper stacking mechanism (1). It is used to place the stack of paperboards (90) on the conveyor belt assembly (6). The discharge assembly (8) cooperates with the conveyor belt assembly (6) to arrange the stack of paperboards (90) into a fish scale shape and continuously feed it into the paper stacking mechanism (1).

2. According to claim 1, the automatic paper feeding machine for a fully automatic carton production line is characterized by: The paper stacking mechanism (1) comprises a limiting assembly (19), a limiting assembly (20), a conveyor belt assembly (21) and a supporting assembly (22); the supporting assembly (22), the conveyor belt assembly (21) and the limiting assembly (19) form a loading chamber (23); the adjusting mechanism (3) is used to adjust the width of the loading chamber (23); the loading chamber (23) is used to stack paperboards (90) that need to enter a paperboard (90) processing machine (4); the limiting assembly (19) is used to limit the position of the paperboard (90) on the X axis; the limiting assembly (20) cooperates with the limiting assembly (19) to limit the position of the paperboard (90) on the Y axis; and the conveyor belt assembly (21) is used to feed a single piece of paperboard (90) into the paperboard (90) processing machine (4).

3. According to claim 2, the automatic paper feeding machine for a fully automatic carton production line is characterized by: The limit assembly (19) comprises a linear slide rail (24), a lead screw motor (25) and a lead screw motor (26); a side baffle (27) is fixedly provided at one end of the linear slide rail (24); a side baffle (28) is also provided on the linear slide rail (24); the lead screw motor (25) drives the side baffle (28) to move along the linear slide rail (24); a rear baffle (29) and a rear baffle (30) are also provided on the linear slide rail (24); the rear baffle (29) is fixed on the linear slide rail (24); the lead screw motor (26) drives the rear baffle (30) to slide on the linear slide rail (24).

4. The automatic paper feeding machine for a fully automatic carton production line according to claim 3 is characterized by: The side baffle plate 1 (27) and the side baffle plate 2 (28) are both provided with guide surfaces (31), a slider (32) is provided at the tail of the side baffle plate 2 (28), the linear guide rail 1 (24) and the lead screw motor 1 (25) are both matched with the slider (32), and a pressure sensor 1 (33) is also provided between the side baffle plate 2 (28) and the slider (32).

5. According to claim 3, the automatic paper feeding machine for a fully automatic carton production line is characterized by: The second limiting component (20) comprises a linear electric cylinder (34), an output end of which is provided with a folded angle push plate (35), the linear electric cylinder (34) drives the folded angle push plate (35) to move and press the paperboard (90) against the rear baffle (29) and the rear baffle (30), the supporting component (22) comprises a base block (36) and a supporting plate (37), the supporting plate (37) is provided on the base block (36), and the height of the supporting plate (37) is flush with the conveyor belt component (21).

6. The automatic paper feeding machine for a fully automatic carton production line according to claim 2 is characterized by: The adjusting mechanism (3) comprises a sliding frame (38) and a screw motor (39), the screw motor (39) comprises a reduction motor (40) and a screw lever (41), the screw lever (41) comprises a first threaded portion (42), a second threaded portion (43) and a third threaded portion (44), the second threaded portion (43) having a thread direction opposite to that of the first threaded portion (42) and the third threaded portion (44), the discharge assembly (8) is threadedly connected to the second threaded portion (43), the frame (5) and the support assembly (22) are connected to the first threaded portion (42) and the third threaded portion (44), a linear guide rail (45) is arranged at the bottom of the sliding frame (38), and the frame (5), the support assembly (22) and the discharge assembly (8) are all slidably connected to the linear guide rail (45).

7. The automatic paper feeding machine for a fully automatic carton production line according to claim 6 is characterized by: Both ends of the second threaded portion (43) are provided with a hexagonal slot one (46), a hexagonal connecting rod (47) is slidably arranged in the hexagonal slot one (46), the end faces of the first threaded portion (42) and the third threaded portion (44) are provided with a hexagonal slot two (48), the two ends of the hexagonal connecting rod (47) are respectively provided with a first hexagonal head (49) and a second hexagonal head (50), and the sliding frame (38) is also provided with a plurality of linear cylinders (54) for driving the hexagonal connecting rod (47) to move and a reduction motor (40) for independently driving the second threaded portion (43) to rotate.

8. The automatic paper feeding machine for a fully automatic carton production line according to claim 1 is characterized by: The discharging assembly (8) comprises a discharging frame (13), a front discharging push plate (14) and a side discharging push plate (15), wherein the front discharging push plate (14) is arranged on the discharging frame (13), a linear electric cylinder (16) is arranged at the tail end of the side discharging push plate, and is arranged at the side end of the cardboard (90) stack, the adjusting mechanism (3) drives the discharging frame (13) to move, a discharging plate groove (17) is also arranged between the discharging frame (13) and the arranging push plate, and a pressure sensor (18) is also arranged between the discharging frame (13) and the arranging push plate.

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