A feeding mechanism for corrugated cardboard processing

Abstract

The invention relates to the field of corrugated cardboard, and discloses a feeding mechanism for processing corrugated cardboard, comprising a bottom plate, a U-shaped seat and a vertical plate, wherein a U-shaped seat is installed at the middle of the top of the bottom plate, a conveying structure is arranged at the right side of the bottom plate, and a feeding structure is arranged in the U-shaped seat. The first belt on the feeding structure drives the rotation of a first upper limit plate, a first lower limit plate and a feeding plate in a receiving and discharging structure, so as to realize the feeding of the corrugated cardboard. The structure is simpler and the manufacturing cost is lower. Meanwhile, compared with the prior art, the corrugated cardboard can be directly fed, and the working efficiency is greatly improved. In addition, a pushing structure is arranged on the vertical plate, so that after feeding, the corrugated cardboard can be pushed out from the receiving and discharging structure for discharging.

Description

Technical Field

[0001] The invention relates to the technical field of corrugated paperboard, in particular to a feeding mechanism used for processing corrugated paperboard. Background Art

[0002] Corrugated cardboard is a multi-layer adhesive body, which is composed of at least one layer of corrugated core paper (commonly known as "corrugated paper", "corrugated core paper", "corrugated paper core", "corrugated base paper") and one layer of cardboard (also known as "boxboard", "boxboard"). It has high mechanical strength and can withstand collisions and falls during transportation. When processing corrugated cardboard, a feeding mechanism is needed to carry out the feeding and processing work;

[0003] The feeding mechanism for processing corrugated cardboard in the prior art, when grabbing the top layer of corrugated paper, uses the rotation of the hollow roller to place a set of suction plates just above the corrugated paper, and then uses the force between the electromagnet and the magnetic strip to push the suction plates and the telescopic tube downward, so that the suction plates are attached to the upper surface of the cardboard and the pressure inside the telescopic tube suddenly decreases to adsorb the corrugated paper. After adsorption, the cardboard is separated from the lower cardboard as the hollow roller rotates, and then transported by the delivery roller group. The entire grabbing mechanism realizes the grabbing of cardboard, the separation of cardboards and the transportation of the cardboard after grabbing without the need for a negative pressure system; the entire corrugated cardboard feeding device has a simple and compact structure, low manufacturing cost, and will not cause the top cardboard to drag the lower cardboard to be sent out during the delivery process, and has an excellent feeding effect on corrugated board;

[0004] However, in the actual feeding process, it is first necessary to use a lifting pallet to lift the corrugated cardboard, and then use the electromagnet to generate repulsive force with the magnetic strip after power is turned on to push the connecting strip and the movable rod, and then use the suction cup to adhere to the surface of the top cardboard to grab the corrugated cardboard, and it is also necessary to rotate the hollow roller to feed the adsorbed cardboard onto the delivery roller group, which leads to a complex structure of the feeding mechanism and high manufacturing cost. Therefore, there is room for improvement. Summary of the invention

[0005] In order to solve the problems raised in the above background technology, the present invention provides a feeding mechanism for corrugated paperboard processing.

[0006] The present invention provides a feeding mechanism for corrugated cardboard processing, which adopts the following technical solution:

[0007] A feeding mechanism for corrugated cardboard processing, comprising a bottom plate, a U-shaped seat and a vertical plate, wherein the U-shaped seat is installed in the middle of the top of the bottom plate, a conveying structure is arranged on the right side of the bottom plate, and a feeding structure is arranged in the U-shaped seat;

[0008] The transmission mechanism is a plurality of first and second transmission mechanisms, each of which is connected to a plurality of transmission mechanisms at the rear of the two lifting boards, and a plurality of first and second transmission mechanisms are connected to the plurality of transmission mechanisms at the rear of the two lifting boards.

[0009] The material receiving and releasing structure includes a connecting plate fixedly mounted on a connecting rod, a loading plate being connected to the connecting plate, extension structures being provided at both ends of the loading plate, a plurality of first upper limit plates being connected to one edge of the loading plate away from a side surface of the connecting rod, a plurality of first lower limit plates being connected to another edge of the loading plate away from a side surface of the connecting rod, each of the first lower limit plates and the corresponding first upper limit plate being in the same vertical direction, a spacing being left between the plurality of the first upper limit plates, and a tightening structure being provided on the first upper limit plate.

[0010] Preferably, the clamping structure includes a fixed frame connected to two first upper limit plates at both side positions of each group, a first electric telescopic rod is installed in the middle of the fixed frame, a lifting bar is connected to one end of the output shaft of the first electric telescopic rod, and a connecting bar is connected to the position of the lifting bar corresponding to each first upper limit plate, and a storage groove is formed on one side surface of each of the first upper limit plates close to the first lower limit plate, and each of the connecting bars is movably inserted into the corresponding storage groove, and a clamping block is connected to one end of the connecting bar inserted into the storage groove.

[0011] Preferably, the extension structure includes a fixed rod fixed through the loading plate, and extension plates are movably mounted at both ends of the fixed rod. A second upper limit plate is connected to one edge of the extension plate away from one side of the connecting rod, and a second lower limit plate is connected to the other edge of the extension plate away from one side of the connecting rod. An adjustment structure is arranged between the extension plate and the loading plate.

[0012] Preferably, the adjustment structure includes a bidirectional screw that rotates through the loading plate, the front and rear sections of the bidirectional screw have opposite thread directions, a thread groove for the bidirectional screw to pass through is opened on the extension plate, and rotating blocks are fixedly sleeved on both ends of the bidirectional screw.

[0013] Preferably, the delivery structure includes a first fixed plate fastened by bolts at the upper ends of the left sides of the two vertical plates, a plurality of fixed shafts are rotatably connected between the two first fixed plates, and a delivery roller is fixedly sleeved on each of the fixed shafts.

[0014] Preferably, the conveying structure includes two second fixed plates installed at the right side position on the bottom plate, second rotating shafts are rotatably passed through the two end positions of the two second fixed plates, a second motor is installed at the right end of the rear side surface of the rear second fixed plate, one end of the second motor output shaft is connected to one of the second rotating shafts, a plurality of second pulleys are fixedly sleeved on the two second rotating shafts, the plurality of second pulleys are evenly spaced, a second belt is tightly sleeved between two second pulleys in the same horizontal direction, the second pulleys are staggered with each other in the horizontal direction and between the first upper limit plate, and a straightening structure is provided on the two second fixed plates.

[0015] Preferably, the straightening structure includes a protrusion fixedly arranged in the middle of each second fixed plate, a driving strip movably passing through each of the protrusions, one end of the driving strip extending above the second belt is connected to a straightening plate, both ends of the straightening plate are arranged obliquely, a transmission structure is arranged between one of the driving strips and one of the second rotating shafts, and a driving structure is arranged between two of the driving strips.

[0016] Preferably, the driving structure includes a transverse plate connected to the middle part below the two second fixed plates, the transverse plate is located below the second belt, an opening is provided in the middle part of the transverse plate, a rotating rod is rotatably connected between the front and rear inner walls of the opening, a spur gear is fixed in the middle part of the rotating rod, the two driving strips are movably inserted into the through grooves provided on the transverse plate, the two driving strips extend to the top and bottom of the spur gears respectively, and the driving strips are provided with teeth meshing with the spur gears.

[0017] Preferably, the transmission structure includes a convex plate installed on the upper front side of the second fixed plate on the front side, a transmission rod rotatably passing through the convex plate, the transmission rod is provided with a first bevel gear fixed at one end of the second rotating shaft, and a second bevel gear is fixed at one end of the corresponding second rotating shaft, the second bevel gear is meshingly connected with the first bevel gear, the other end of the transmission rod close to the driving strip is connected to a driving rod, and the corresponding inner wall of the driving strip is connected to a fixed strip, the fixed strip is provided with a driving groove, and one end of the driving rod is movably inserted into the driving groove.

[0018] Preferably, the pushing structure includes a mounting plate connected to the inner walls of the two vertical plates near the upper position, a second electric telescopic rod is installed in the middle of the left side of the mounting plate, one end of the output shaft of the second electric telescopic rod is connected to a longitudinal plate, both ends of the longitudinal plate are connected to Z-shaped bars, the top of the Z-shaped bar is connected to a pushing frame, and the pushing frame is in a "U" shape.

[0019] In summary, the present invention includes the following beneficial technical effects:

[0020] 1. The present invention provides a feeding structure, a receiving and discharging structure and a pushing structure on the bottom plate, and utilizes a first belt on the feeding structure to drive the first upper limit plate, the first lower limit plate and the feeding plate in the receiving and discharging structure to rotate, so as to realize the feeding of corrugated cardboard. The structure is simpler and the manufacturing cost is lower. At the same time, compared with the prior art, the corrugated cardboard can be directly fed, which greatly improves the work efficiency. In addition, a pushing structure is provided on the vertical plate, so that after feeding, the corrugated cardboard can be pushed out from the receiving and discharging structure for discharging.

[0021] 2. The present invention can reduce the problem of corrugated cardboard falling during the feeding process by arranging an extension structure and a tightening structure on the material receiving and releasing structure, thereby further improving work efficiency;

[0022] 3. The present invention provides a straightening structure, a driving structure and a transmission structure on the conveying structure, so that when the corrugated cardboard to be loaded is conveyed to the loading structure on the conveying structure, the two straightening plates on the straightening structure can move back and forth synchronously in opposite directions to automatically straighten the corrugated cardboard on the conveying structure. In this way, the conveyed corrugated cardboard can smoothly enter the receiving and unloading structure for loading, and the loading work is smoother. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a feeding mechanism for corrugated paperboard processing in an embodiment of the present invention;

[0024] Figure 2 is a schematic structural diagram of a fixed plate in an embodiment of the present invention;

[0025] Figure 3 It is a schematic diagram of the structure of the horizontal plate in an embodiment of the present invention;

[0026] Figure 4 In the embodiment of the present invention Figure 3 A magnified view of the structure at A;

[0027] Figure 5 It is a structural schematic diagram of a feeding structure in an embodiment of the present invention;

[0028] Figure 6 In the embodiment of the present invention Figure 5 A magnified view of the structure at B;

[0029] Figure 7 It is a structural schematic diagram of a material receiving and discharging structure in an embodiment of the present invention;

[0030] Figure 8 Schematic diagram of the structure below the first upper limit plate in an embodiment of the present invention.

[0031] Explanation of the reference numerals: 1. bottom plate; 2. U-shaped seat; 3. vertical plate; 4. first rotating shaft; 5. first motor; 6. first pulley; 7. first belt; 8. limit frame; 9. connecting rod; 10. connecting plate; 11. feeding plate; 12. first upper limit plate; 13. first lower limit plate; 14. fixing frame; 15. first electric telescopic rod; 16. lifting bar; 17. connecting bar; 18. storage slot; 19. clamping block; 20. fixing rod; 21. extension plate; 22. bidirectional screw; 23. rotating block; 24. second upper limit plate; 25. second lower limit plate; 26. first fixing Plate; 27, fixed shaft; 28, feeding roller; 29, second fixed plate; 30, second rotating shaft; 31, second motor; 32, second pulley; 33, second belt; 34, convex block; 35, driving strip; 36, straightening plate; 37, transverse plate; 38, opening; 39, rotating rod; 40, spur gear; 41, through groove; 42, convex plate; 43, transmission rod; 44, first bevel gear; 45, second bevel gear; 46, driving rod; 47, fixed strip; 48, driving groove; 49, pushing frame; 50, mounting plate; 51, second electric telescopic rod; 52, longitudinal plate; 53, Z-shaped strip. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-Figure 8 The present invention is described in further detail.

[0033] The embodiment of the present invention discloses a feeding mechanism for processing corrugated cardboard, comprising a bottom plate 1, a U-shaped seat 2 and a vertical plate 3, wherein the U-shaped seat 2 is installed in the middle of the top of the bottom plate 1, a conveying structure is arranged on the right side of the bottom plate 1, and a feeding structure is arranged inside the U-shaped seat 2;

[0034] The feeding structure includes a vertical plate 3 fastened to the inner walls of the front and rear sides of the U-shaped seat 2 by bolts, and the first rotating shaft 4 is rotatably connected at the upper and lower end positions between the two vertical plates 3, and a first motor 5 is installed at the top of the rear side surface of the rear vertical plate 3. One end of the output shaft of the first motor 5 is connected to the rear end of the upper first rotating shaft 4. The two ends of the two first rotating shafts 4 are fixedly sleeved with a first pulley 6, and the two first pulleys 6 in the same vertical direction are tightly sleeved with a first belt 7. A limiting frame 8 is installed at the edges of the two vertical plates 3 away from each other on one side, and the limiting frame 8 plays a limiting role in the rotating first belt 7 to reduce the deformation of the first belt 7. The upper part of the first belt 7 is attached to the limiting frame 8. A sending structure is arranged at the upper position of the left side of the two vertical plates 3, and two connecting rods 9 are connected between the two first belts 7. The two connecting rods 9 are arranged corresponding to the positions of the sending structure and the conveying structure. Each connecting rod 9 is provided with a receiving and releasing structure, and a pushing structure is arranged near the upper position in the two vertical plates 3;

[0035] The material receiving and releasing structure includes a connecting plate 10 fixedly sleeved on the connecting rod 9, a loading plate 11 is connected to the connecting plate 10, and extension structures are provided at both ends of the loading plate 11. A plurality of first upper limit plates 12 are connected to one edge of the loading plate 11 away from one side of the connecting rod 9, and a plurality of first lower limit plates 13 are connected to the other edge of the loading plate 11 away from one side of the connecting rod 9. Each first lower limit plate 13 is in the same vertical direction as the corresponding first upper limit plate 12, and a spacing is left between the plurality of first upper limit plates 12. A tightening structure is provided on the first upper limit plate 12;

[0036] The delivery structure includes a first fixed plate 26 fastened by bolts at the upper end of the left side surfaces of the two vertical plates 3, and a plurality of fixed shafts 27 are rotatably connected between the two first fixed plates 26, and a delivery roller 28 is fixedly sleeved on each fixed shaft 27;

[0037] The pushing structure includes a mounting plate 50 connected to the inner wall of the two vertical plates 3 near the upper position, a second electric telescopic rod 51 is installed in the middle of the left side of the mounting plate 50, one end of the output shaft of the second electric telescopic rod 51 is connected to a longitudinal plate 52, both ends of the longitudinal plate 52 are connected to a Z-shaped bar 53, and the top of the Z-shaped bar 53 is connected to a pushing frame 49, and the pushing frame 49 is in a "U" shape. Starting the first motor 5 drives the first rotating shaft 4, the first pulley 6 and the first belt 7 to rotate as a whole, driving one set of the loading plate 11, the first upper limit plate 12 and the first lower limit plate 13 to move When the first belt 7 drives the corrugated cardboard to move to the delivery roller 28, the second electric telescopic rod 51 on the mounting plate 50 is started to drive the pushing frame 49 at one end of the Z-shaped bar 53 to move toward the delivery roller 28, and the corrugated cardboard between the first upper limit plate 12 and the first lower limit plate 13 is pushed out to the delivery roller 28, so that the feeding work of the corrugated cardboard can be realized.

[0038] See also Figure 1 , Figure 5 , Figure 7 and Figure 8 The clamping structure includes a fixed frame 14 connected to the two first upper limit plates 12 at the two sides of each group, a first electric telescopic rod 15 is installed in the middle of the fixed frame 14, and a lifting bar 16 is connected to one end of the output shaft of the first electric telescopic rod 15. A connecting bar 17 is connected to the position of each first upper limit plate 12 on the lifting bar 16. A storage groove 18 is opened on one side surface of each first upper limit plate 12 close to the first lower limit plate 13, and each connecting bar 17 is movably inserted into the corresponding storage groove 18. A clamping block 19 is connected to one end of the connecting bar 17 inserted into the storage groove 18. When the corrugated cardboard is conveyed to the position between the first upper limit plate 12 and the first lower limit plate 13, the first electric telescopic rod 15 on the fixed frame 14 can be started to drive the lifting bar 16 to move, so as to drive the clamping block 19 to move, and clamp the corrugated cardboard on the first lower limit plate 13 to prevent the corrugated cardboard from falling during the feeding process;

[0039] The extension structure includes a fixed rod 20 fixedly passing through the loading plate 11, and an extension plate 21 is movably sleeved at both ends of the fixed rod 20, and a second upper limit plate 24 is connected to one edge of the extension plate 21 away from the side of the connecting rod 9, and a second lower limit plate 25 is connected to the other edge of the extension plate 21 away from the side of the connecting rod 9, and an adjustment structure is provided between the extension plate 21 and the loading plate 11;

[0040] The adjustment structure includes a bidirectional screw 22 that rotates through the loading plate 11. The threads on the front and rear sections of the bidirectional screw 22 are in opposite directions. A thread groove for the bidirectional screw 22 to pass through is opened on the extension plate 21. Turning blocks 23 are fixedly sleeved on both ends of the bidirectional screw 22. Before loading, the bidirectional screw 22 can be rotated by using the turning blocks 23 at the two ends of the loading plate 11. According to the size of the corrugated cardboard actually loaded, the positions of the two groups of extension plates 21, the second upper limit plate 24 and the second lower limit plate 25 can be flexibly adjusted to make the loading of the corrugated cardboard more stable.

[0041] See also Figure 1-Figure 7 The conveying structure includes two second fixed plates 29 installed on the right side of the bottom plate 1, and second rotating shafts 30 are rotatably passed through the two end positions of the two second fixed plates 29. A second motor 31 is installed at the right end of the rear side surface of the rear second fixed plate 29, and one end of the output shaft of the second motor 31 is connected to one of the second rotating shafts 30. A plurality of second pulleys 32 are fixedly sleeved on the two second rotating shafts 30, and the plurality of second pulleys 32 are evenly spaced. A second belt 33 is tightly sleeved between the two second pulleys 32 in the same horizontal direction. The second pulleys 32 are staggered with each other between the first upper limit plate 12 in the horizontal direction. A straightening structure is provided on the two second fixed plates 29. When the second motor 31 is started to drive the second pulley 32 to rotate, the corrugated cardboard can be conveyed toward the feeding structure on the rotating second pulley 32;

[0042] The straightening structure includes a protrusion 34 fixedly arranged in the middle of each second fixed plate 29, and a driving bar 35 is movably passed through each protrusion 34. One end of the driving bar 35 extending above the second belt 33 is connected to a straightening plate 36. Both ends of the straightening plate 36 are arranged obliquely, and a transmission structure is arranged between one of the driving bars 35 and one of the second rotating shafts 30, and a driving structure is arranged between the two driving bars 35;

[0043] The driving structure includes a horizontal plate 37 connected to the middle of the two second fixed plates 29, the horizontal plate 37 is located below the second belt 33, an opening 38 is opened in the middle of the horizontal plate 37, a rotating rod 39 is rotatably connected between the inner walls of the front and rear sides of the opening 38, a spur gear 40 is fixedly sleeved in the middle of the rotating rod 39, two driving strips 35 are movably inserted into the through slot 41 provided on the horizontal plate 37, the two driving strips 35 extend to the upper and lower sides of the spur gear 40 respectively, and the driving strips 35 are provided with teeth meshing with the spur gear 40;

[0044] The transmission structure includes a convex plate 42 installed on the upper front side of the second fixed plate 29 on the front side, a transmission rod 43 rotatably passes through the convex plate 42, a first bevel gear 44 is fixedly sleeved on the transmission rod 43 at one end close to the second rotating shaft 30, and a second bevel gear 45 is fixedly sleeved on one end of the corresponding second rotating shaft 30, and the second bevel gear 45 is meshingly connected with the first bevel gear 44, a driving rod 46 is connected to the other end of the transmission rod 43 close to the driving strip 35, and a fixing strip 47 is connected to the inner wall of the corresponding driving strip 35, and a driving groove 48 is opened on the fixing strip 47, and one end of the driving rod 46 is movably inserted into the driving groove 48, and the second rotating shaft 30 drives the first During the process of the second belt 33 rotating to transport the corrugated cardboard, the transmission rod 43 is driven to rotate on the convex plate 42 through the second bevel gear 45 and the first bevel gear 44, thereby driving one end of the driving rod 46 to slide up and down in the driving groove 48 of the fixed strip 47, pushing the corresponding driving strip 35 to reciprocate back and forth on the protrusion 34, and under the action of the rotating rod 39 and the spur gear 40, the two straightening plates 36 are automatically driven to move back and forth in opposite directions synchronously, thereby playing the role of straightening the corrugated cardboard on the second belt 33, so that the corrugated cardboard can smoothly enter between the first upper limit plate 12 and the first lower limit plate 13 for feeding.

[0045] The implementation principle of a feeding mechanism for corrugated cardboard processing in an embodiment of the present invention is as follows: first, the second motor 31 on the second fixed plate 29 is started to drive the second rotating shaft 30 to rotate, so as to drive the plurality of second pulleys 32 and the second belt 33 to rotate as a whole, so as to transport the corrugated cardboard to one side of the vertical plate 3, and when one of the second rotating shafts 30 is rotated, the transmission rod 43 on the convex plate 42 is driven to rotate through the second bevel gear 45 and the first bevel gear 44, so as to drive the driving rod 46 at one end of the transmission rod 43 to rotate, and one end of the driving rod 46 slides up and down in the driving groove 48 of the fixed bar 47 to push the corresponding driving bar 35 to move back and forth on the convex block 34, and drives another driving bar 35 to move through the spur gear 40, so that the two driving bars 35 drive the two straightening plates 36 to move back and forth synchronously in opposite directions, and the corrugated cardboard is straightened on the second belt 33. When the second belt 33 conveys the corrugated cardboard to between one group of the first upper limit plate 12 and the first lower limit plate 13, the first electric telescopic rod 15 on the fixed frame 14 is started, driving the lifting bar 16, the connecting bar 17 and the clamping block 19 to move as a whole, and the clamping block 19 clamps the corrugated cardboard on the first lower limit plate 13, and then the first motor 5 on the vertical plate 3 is started to drive the first rotating shaft 4, the first pulley 6 and the first belt 7 to rotate as a whole, so as to lift the corrugated cardboard. With the rotation of the first belt 7, the first upper limit plate 12 and the first lower limit plate 13 drive the corrugated cardboard to flip onto the delivery roller 28, and then the second electric telescopic rod 51 on the mounting plate 50 is started, driving the pushing frame 49 to pass through the corresponding connecting rod 9, and pass through between the extension plate 21 and the corresponding first upper limit plate 12, and push the corrugated cardboard to the delivery roller 28, so that the feeding of the corrugated cardboard can be realized.

[0046] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A feeding mechanism for processing corrugated paperboard, comprising a bottom plate (1), a U-shaped seat (2) and a vertical plate (3), characterized in that: A U-shaped seat (2) is installed in the middle of the upper side of the bottom plate (1), a conveying structure is arranged on the right side of the bottom plate (1), and a loading structure is arranged inside the U-shaped seat (2); The feeding structure comprises a vertical plate (3) fastened to the inner walls of the front and rear sides of the U-shaped seat (2) by bolts, a first rotating shaft (4) is rotatably connected at the upper and lower ends of the two vertical plates (3), a first motor (5) is installed at the top of the rear side surface of the rear vertical plate (3), one end of the output shaft of the first motor (5) is connected to the rear end of the upper first rotating shaft (4), and first pulleys (6) are fixedly sleeved at both ends of the two first rotating shafts (4), and a first pulley (6) is tightly sleeved on the two first pulleys (6) in the same vertical direction. A belt (7), a limit frame (8) is installed at the edges of the two vertical plates (3) away from each other, the upper surface of the first belt (7) is in contact with the limit frame (8), a delivery structure is arranged at the upper position of the left side of the two vertical plates (3), two connecting rods (9) are connected between the two first belts (7), the two connecting rods (9) are arranged corresponding to the positions of the delivery structure and the conveying structure, each of the connecting rods (9) is provided with a material receiving and releasing structure, and a material pushing structure is arranged at a position near the upper part of the two vertical plates (3); The material receiving and releasing structure comprises a connecting plate (10) fixedly sleeved on the connecting rod (9), a loading plate (11) being connected to the connecting plate (10), extension structures being provided at both ends of the loading plate (11), a plurality of first upper limit plates (12) being connected to one edge of the loading plate (11) away from a side of the connecting rod (9), a plurality of first lower limit plates (13) being connected to another edge of the loading plate (11) away from a side of the connecting rod (9), each of the first lower limit plates (13) being in the same vertical direction as the corresponding first upper limit plate (12), a spacing being left between the plurality of first upper limit plates (12), and a tightening structure being provided on the first upper limit plate (12); The clamping structure comprises a fixed frame (14) connected to two first upper limit plates (12) at two side positions of each group, a first electric telescopic rod (15) is installed in the middle of the fixed frame (14), a lifting bar (16) is connected to one end of the output shaft of the first electric telescopic rod (15), and a connecting bar (17) is connected to the position of the lifting bar (16) corresponding to each first upper limit plate (12), and a storage groove (18) is formed on a side surface of each first upper limit plate (12) close to the first lower limit plate (13), and each of the connecting bars (17) is movably inserted into the corresponding storage groove (18), and a clamping block (19) is connected to one end of the connecting bar (17) inserted into the storage groove (18); The extension structure comprises a fixing rod (20) fixedly passing through the loading plate (11), and extension plates (21) are movably sleeved at both ends of the fixing rod (20), and a second upper limit plate (24) is connected to one edge of the extension plate (21) away from a side of the connecting rod (9), and a second lower limit plate (25) is connected to the other edge of the extension plate (21) away from a side of the connecting rod (9), and an adjustment structure is provided between the extension plate (21) and the loading plate (11); The adjustment structure comprises a bidirectional screw (22) that rotates and passes through the loading plate (11), the threads of the front and rear sections of the bidirectional screw (22) are in opposite directions, a thread groove for the bidirectional screw (22) to pass through is formed on the extension plate (21), and rotating blocks (23) are fixedly sleeved on both ends of the bidirectional screw (22).

2. A feeding mechanism for corrugated cardboard processing according to claim 1, characterized in that: The delivery structure comprises a first fixed plate (26) fastened by bolts to the upper ends of the left sides of the two vertical plates (3); a plurality of fixed shafts (27) are rotatably connected between the two first fixed plates (26); and a delivery roller (28) is fixedly sleeved on each of the fixed shafts (27).

3. A feeding mechanism for corrugated cardboard processing according to claim 1, characterized in that: The conveying structure comprises two second fixed plates (29) mounted on the right side of the bottom plate (1), second rotating shafts (30) rotatably passing through the two end positions of the two second fixed plates (29), a second motor (31) is mounted on the right end of the rear side surface of the rear second fixed plate (29), one end of the output shaft of the second motor (31) is connected to one of the second rotating shafts (30), a plurality of second belt pulleys (32) are fixedly sleeved on the two second rotating shafts (30), the plurality of second belt pulleys (32) are evenly spaced, a second belt (33) is tightly sleeved between two second belt pulleys (32) in the same horizontal direction, the second belt pulleys (32) are staggered with each other in the horizontal direction and between the first upper limit plate (12), and a straightening structure is provided on the two second fixed plates (29).

4. A feeding mechanism for corrugated cardboard processing according to claim 3, characterized in that: The straightening structure comprises a protrusion (34) fixedly arranged at the middle of each second fixed plate (29), a driving bar (35) movably passing through each of the protrusions (34), one end of the driving bar (35) extending above the second belt (33) is connected to a straightening plate (36), both ends of the straightening plate (36) are arranged obliquely, a transmission structure is arranged between one of the driving bars (35) and one of the second rotating shafts (30), and a driving structure is arranged between two of the driving bars (35).

5. A feeding mechanism for corrugated cardboard processing according to claim 4, characterized in that: The driving structure comprises a transverse plate (37) connected to the middle of the two second fixed plates (29), the transverse plate (37) being located below the second belt (33), an opening (38) being provided in the middle of the transverse plate (37), a rotating rod (39) being rotatably connected between the inner walls on both sides of the opening (38), a spur gear (40) being fixedly sleeved in the middle of the rotating rod (39), the two driving strips (35) being movably inserted into a through groove (41) provided on the transverse plate (37), the two driving strips (35) respectively extending to the upper and lower sides of the spur gear (40), and the driving strip (35) being provided with teeth meshing with the spur gear (40).

6. A feeding mechanism for corrugated cardboard processing according to claim 4, characterized in that: The transmission structure comprises a convex plate (42) mounted on the upper front side of the second fixed plate (29) on the front side, a transmission rod (43) rotatably passing through the convex plate (42), a first bevel gear (44) fixedly sleeved on one end of the transmission rod (43) close to the second rotating shaft (30), a second bevel gear (45) fixedly sleeved on one end of the corresponding second rotating shaft (30), the second bevel gear (45) and the first bevel gear (44) being meshingly connected, a driving rod (46) connected to the other end of the transmission rod (43) close to the driving bar (35), a fixing bar (47) connected to the inner wall of the corresponding driving bar (35), a driving groove (48) opened on the fixing bar (47), one end of the driving rod (46) movably inserted into the driving groove (48).

7. A feeding mechanism for corrugated cardboard processing according to claim 1, characterized in that: The material pushing structure comprises a mounting plate (50) connected to the inner walls of the two vertical plates (3) near the upper position, a second electric telescopic rod (51) is mounted in the middle of the left side of the mounting plate (50), one end of the output shaft of the second electric telescopic rod (51) is connected to a longitudinal plate (52), both ends of the longitudinal plate (52) are connected to Z-shaped strips (53), the top end of the Z-shaped strip (53) is connected to a material pushing frame (49), and the material pushing frame (49) is in a "U" shape.

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