Paperboard folding machine

Abstract

The invention relates to a paperboard folding machine which comprises a first rack and a second rack which are connected with each other, the first rack and the second rack are each provided with a conveying mechanism, the first rack is rotationally connected with two first pressing wheels, and the two first pressing wheels are used for squeezing a paperboard in the paperboard conveying process to form folds; the two sides of the first rack are each provided with a first tubular piece, the first tubular pieces abut against the ends of paperboards in the paperboard conveying process so that the ends of the paperboards can be lifted up along creases, and the second rack is further rotationally connected with two sets of rolling wheels and two sets of second pressing wheels. A channel allowing the lifted end of the paperboard to pass through is formed between each set of idler wheels and each set of second pressing wheels, each set of second pressing wheels extrude the crease position of the paperboard when the lifted end of the paperboard passes through the channel, two guide belts are further arranged on the second rack, and the lifted end of the paperboard passes through the channel, then collides with the guide belts and is folded to the paperboard. According to the paperboard folding device, folding of paperboards can be completed while the paperboards are conveyed, and the folding efficiency of the paperboards is greatly improved.

Description

Technical Field

[0001] The invention relates to the field of carton production equipment, in particular to a cardboard folding machine. Background Art

[0002] Before production, the carton is a piece of cardboard. When producing the carton, you need to first use a folding machine to pre-fold the cardboard to form creases of a certain depth on the cardboard, and then fold the cardboard together according to the creases.

[0003] In the traditional production process, cardboard is folded one by one by manually putting it into the folding machine to press the crease and fold it, so the efficiency of cardboard folding is very low. In order to ensure the efficiency of carton production, how to achieve fast folding of cardboard has become a problem. Summary of the invention

[0004] The present application provides a cardboard folding machine, which can complete the folding of cardboard while transmitting the cardboard, thereby greatly improving the folding efficiency of the cardboard.

[0005] The paperboard folding machine provided in this application adopts the following technical solution: A cardboard folding machine comprises a first frame and a second frame connected to each other, wherein the first frame and the second frame are both provided with a conveying mechanism, the first frame is rotatably connected with two first pressing wheels, the two first pressing wheels are used to squeeze the cardboard to form a crease during the cardboard conveying process, the first frame is provided with a first tubular member on both sides, the first tubular member conflicts with the end of the cardboard during the cardboard conveying process so that the end of the cardboard is lifted along the crease, the second frame is also rotatably connected with two groups of rollers and two groups of second pressing wheels, each group of the rollers and each group of the second pressing wheels form a channel for the lifted end of the cardboard to pass through, each group of the second pressing wheels squeezes the crease of the cardboard when the lifted end of the cardboard passes through the channel, the second frame is also provided with two guide belts, the lifted end of the cardboard collides with the guide belt after passing through the channel and is folded onto the cardboard under the guidance of the guide belt.

[0006] By adopting the above technical solution, when the cardboard is folded, the cardboard first enters the first frame. During the cardboard transmission process, the two first pressing wheels will press the cardboard to form two folds, and then the two ends of the cardboard will contact the two first tubular members. During the cardboard transmission process, the two first tubular members will lift the two ends of the cardboard. Then the cardboard is transmitted to the second frame, and the lifted ends of the cardboard will enter the two channels. Then the two sets of rollers and the two sets of second pressing wheels will further squeeze the folds of the cardboard, so that the two ends of the cardboard can be easily turned over and folded onto the cardboard. After passing through the two channels, the two ends of the cardboard will be turned over and folded onto the cardboard under the guidance of the two guide belts, thereby completing a cardboard folding operation. The folded cardboard can be directly transported to the nailing machine through the conveyor belt, and the two ends of the folded cardboard are nailed to complete the preliminary processing of the carton.

[0007] Preferably, two mounting seats are provided on the second frame, and the bottom ends of the two mounting seats are located between the two groups of rollers. The two groups of second pressure wheels are rotatably connected to the bottom ends of the two mounting seats respectively. A plurality of cavities are provided in the mounting seat, and a plurality of adsorption holes are provided on a surface of each cavity close to an adjacent roller, and a plurality of exhaust holes are provided on a side wall of each cavity away from the plurality of adsorption holes. A first rotating rod is rotatably connected in each cavity, and each of the first rotating rods is provided with a plurality of fan blades. The mounting seat is also provided with a plurality of driving parts for driving the plurality of first rotating rods to rotate. When the first rotating rod rotates, it rotates with the plurality of fan blades so as to draw outside air from the plurality of adsorption holes into the cavity and discharge it from the plurality of exhaust holes, so that the plurality of adsorption holes generate adsorption force so as to adsorb the end of the cardboard when the end of the cardboard passes through the channel.

[0008] By adopting the above technical solution, the lifted end of the cardboard will be adsorbed by multiple adsorption holes when passing through the channel, and the lifted end of the cardboard will be prevented from shaking significantly when the two sets of second pressing wheels and two sets of rollers squeeze the crease for the second time, and the two sets of second pressing wheels and two sets of rollers will be prevented from being pressed off-center when the two sets of second pressing wheels and two sets of rollers press the crease for the second time. In this way, the two indentations can be effectively overlapped, so that the two lifted ends of the cardboard are the same length and close to each other when folded onto the cardboard, so that the cardboard can meet the requirements of the nail pasting operation.

[0009] Preferably, the driving part includes a second rotating rod rotatably connected to the bottom of the mounting seat, a rotating wheel provided on the second rotating rod for contacting the cardboard, a third rotating rod rotatably connected to the mounting seat, a first bevel tooth provided on the second rotating rod, a second bevel tooth provided at the bottom end of the third rotating rod and meshing with the first bevel tooth, a third bevel tooth provided at the top end of the second rotating rod, and a fourth bevel tooth provided on the first rotating rod and meshing with the third bevel tooth.

[0010] By adopting the above technical solution, the cardboard will come into contact with the rotating wheel during the transmission process, which will cause the rotating wheel to rotate. The rotation of the rotating wheel will cause the second rotating rod and the first bevel tooth to rotate. The rotation of the first bevel tooth will cause the fourth bevel tooth and the first rotating rod to rotate through the second bevel tooth, the third rotating rod, and the third bevel tooth, thereby causing multiple fan blades to rotate and multiple adsorption holes to generate adsorption force.

[0011] Preferably, the first frame includes a first base, two first frames slidably connected to the first base, a first control mechanism for controlling the sliding of the two first frames, the two first pressure wheels are rotatably connected to the two first frames, the two first tubular members are respectively arranged on the two first frames, the second frame includes a second base, two second frames slidably connected to the second base, two support columns, a crossbeam fixed at both ends to the two support columns, and a second control mechanism for controlling the sliding of the two second frames, the two second frames and the second base are located between the two support columns, the two mounting seats are respectively slidably connected to the crossbeam, the two guide belts are respectively arranged on the two frames, the crossbeam is also provided with a third control mechanism for controlling the sliding of the two mounting seats, the two sets of rollers are respectively rotatably connected to the two second frames, the two guide belts are respectively arranged on the two second frames, the conveying mechanism arranged on the first frame includes two conveying belts respectively arranged on the two second frames, and the conveying mechanism arranged on the second frame includes conveying belts respectively arranged on the two second frames.

[0012] By adopting the above technical solution, the folding machine can adjust the positions of the two indentations according to the size of the paperboard, thereby meeting the folding requirements of paperboards of various sizes.

[0013] Preferably, the first control mechanism includes a first motor arranged on one side of the first base, a first screw rod rotatably connected to the base and connected to the output shaft of the first motor, the first screw rod is provided with two threaded sections with opposite thread directions, and the two first frames are respectively threadedly connected to the two threaded sections of the first screw rod.

[0014] By adopting the above technical solution, the rotation of the first motor will drive the first screw to rotate, so that the two first frames move closer to each other or move away from each other, thereby adjusting the distance between the two first pressing wheels, so that the two first pressing wheels can press the cardboard to a predetermined position, thereby meeting the folding requirements of cardboards of different sizes.

[0015] Preferably, the second control mechanism includes a second motor arranged on one side of the second base, a second screw rod rotatably connected to the base and connected to the output shaft of the second motor, the second screw rod is provided with two threaded sections with opposite thread directions, and the two second frames are respectively threadedly connected to the two threaded sections of the second screw rod.

[0016] By adopting the above technical solution, the rotation of the second motor will drive the second screw to rotate, so that the two second frames move closer to each other or move away from each other, thereby adjusting the distance between the two sets of second rollers, and then the third control mechanism is used to control the sliding of the two mounting seats, so as to adjust the position and width of the two channels, so that the lifted end of the cardboard can smoothly enter the channel, and the two sets of second gears can press the folds at both ends of the cardboard more accurately.

[0017] Preferably, the third control mechanism includes a third screw rod rotatably connected to the cross beam, and a third motor arranged on the cross beam to drive the third screw rod to rotate. The third screw rod is provided with two threaded sections with opposite thread directions, and the two mounting seats are respectively threadedly connected to the two threaded sections of the third screw rod.

[0018] By adopting the above technical solution, after the two sets of rollers move with the two frames, the third motor is started. The rotation of the third motor will drive the third screw rod to rotate, and the rotation of the third screw rod will control the movement of the two mounting seats, so that the two mounting seats can follow the movement of the two second frames.

[0019] Preferably, a guide rail is provided in the first frame body, a slider is slidably connected to the guide rail, the first pressure wheel is rotatably connected to the slider, and a fourth control mechanism for controlling the slider to slide up and down is also provided in the frame body.

[0020] By adopting the above technical solution, the distance between the first pressing wheel and the conveyor belt can be adjusted by adjusting the position of the slider on the guide rail through the fourth control mechanism according to the thickness of the cardboard, so that the crease can be pressed smoothly while meeting the cardboard transmission requirements.

[0021] Preferably, the fourth control mechanism includes a fourth motor disposed in the frame and a fourth screw rod rotatably connected to the frame, the fourth screw rod is connected to the output shaft of the fourth motor, and the slider is threadedly connected to the fourth screw rod.

[0022] By adopting the above technical solution, the fourth motor is started to rotate with the fourth screw rod to control the upward and downward sliding of the slider, thereby adjusting the distance between the first pressure wheel and the conveyor belt.

[0023] The technical effects of the present invention are mainly reflected in the following aspects: 1. The present invention can complete the folding of cardboard while conveying it, greatly improving the folding efficiency of cardboard 2. The present invention can change the distance between the two first frames and the two second frames, so that the folding machine can adjust the positions of the two indentations according to the size of the paperboard, thereby meeting the folding requirements of paperboards of various sizes; 3. In the present invention, when the lifted end of the cardboard passes through the channel, it will be adsorbed by multiple adsorption holes, so as to prevent the two sets of second pressing wheels and two sets of rollers from deviating when pressing the crease for the second time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the folding machine of the present application.

[0025] Figure 2 It is a structural schematic diagram of the folding machine of the present application from another angle.

[0026] Figure 3 yes Figure 1 Cross-sectional view of the folding machine along line AA.

[0027] Figure 4 yes Figure 3 A partial enlarged view of point B in the middle.

[0028] Figure 5 yes Figure 2 Cross-sectional view of the center folding machine along line CC.

[0029] Figure 6 hour Figure 5 A partial enlarged view of point D in the middle.

[0030] Figure numerals: 11, first frame; 12, first pressure wheel; 13, first tubular member; 14, second frame; 15, second frame; 16, roller; 17, second pressure wheel; 18, guide belt; 19, second base; 20, dust cover; 2, transmission mechanism; 3, mounting seat; 31, adsorption hole; 32, cavity; 33, exhaust hole; 34, first rotating rod; 35, fan blade; 4, driving part; 41, second rotating rod; 42, rotating wheel; 43, third rotating rod; 44, first bevel gear; 45, The second bevel gear; 46, the third bevel gear; 47, the fourth bevel gear; 51, the first base; 52, the first frame; 53, the support column; 54, the crossbeam; 55, the guide rail; 56, the slider; 6, the first control mechanism; 61, the first motor; 62, the first screw rod; 7, the second control mechanism; 71, the second screw rod; 72, the second motor; 8, the third control mechanism; 81, the third motor; 82, the third screw rod; 9, the fourth control mechanism; 91, the fourth motor; 92, the fourth screw rod; 10, the cardboard. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with the accompanying drawings to make the technical solution of the present application easier to understand and grasp.

[0032] Reference Figure 1 and Figure 2A paperboard folding machine of this embodiment includes a first frame 11 and a second frame 14 connected to each other, and a conveying mechanism 2 for conveying paperboards 10 is installed on the first frame 11. The first frame 11 includes a first base 51 and two first frames 52 slidably connected to the first base 51 along the X-axis direction. The conveying mechanism 2 includes two conveyor belts respectively fixed on the two first frames 52.

[0033] Reference Figure 1 , Figure 3 The first frame 11 also includes a first control mechanism 6 for controlling the sliding of the two first frames 52. The first control mechanism 6 includes a first motor 61 fixed to one side of the first base 51, a first screw rod 62 rotatably connected to the base and connected to the output shaft of the first motor 61, and the first screw rod 62 is provided with two threaded sections with opposite thread directions, and the two first frames 52 are respectively threadedly connected to the two threaded sections of the first screw rod 62.

[0034] Reference Figure 1 , Figure 3 and Figure 4 A guide rail 55 is fixed in the end of each first frame 52 near the entrance, and a slider 56 is slidably connected to the two guide rails 55 along the Z axis direction, and a first pressing wheel 12 is rotatably connected to each slider 56, and the rotation axis of the two first pressing wheels 12 is parallel to the X axis. A third control mechanism 8 for controlling the sliding of the slider 56 up and down is also provided in each frame, and the third control mechanism 8 includes a third motor 81 fixed in the frame and a third screw rod 82 rotatably connected to the frame, and the rotation axis of the third screw rod 82 is parallel to the Z axis, and the third screw rod 82 is connected to the output shaft of the third motor 81, and the slider 56 is threadedly connected to the third screw rod 82.

[0035] Reference Figure 3 and Figure 4 , two guide rails 55 and two first pressing wheels 12 are respectively located above the two conveyor belts. The two first pressing wheels 12 are used to press the paperboard 10 to form folds during the conveyance of the paperboard 10. A first tubular member 13 is fixed on the side of the two frames away from each other. The first tubular member 13 contacts the end of the paperboard 10 during the conveyance of the paperboard 10, so that the end of the paperboard 10 is lifted along the fold during the conveyance of the paperboard 10.

[0036] Reference Figure 2 , Figure 5 and Figure 6The second frame 14 includes a second base 19, two second frames 15 connected to the second base 19 in a sliding manner along the X-axis direction, and a second control mechanism 7 for controlling the sliding of the two second frames 15. Two dust covers 20 are provided on the second base 19, and the two dust covers 20 are connected to the two second frames 15. The second frame 14 is also equipped with a conveying mechanism 2, which includes two conveyor belts respectively installed on the two second frames 15. The two second frames 15 are respectively connected to the two first frames 52. The conveyor belts on the two second frames 15 are connected to the conveyor belts on the two first frames 52, and the conveying directions of the four conveyor belts are parallel to the Y-axis. A group of conveying rollers 16 are provided on the ends of the two second frames 15 that are close to each other.

[0037] Reference Figure 2 , Figure 5 and Figure 6 The second control mechanism 7 includes a second motor 72 arranged on one side of the second base 19, a second screw rod 71 rotatably connected to the base and connected to the output shaft of the second motor 72, the second screw rod 71 is provided with two threaded sections with opposite thread directions, and the two second frames 15 are respectively threadedly connected to the two threaded sections of the second screw rod 71.

[0038] Reference Figure 2 , Figure 5 and Figure 6 The second frame 15 also includes two support columns 53, a crossbeam 54 fixed at both ends to the two support columns 53, and two mounting seats 3 slidably connected along the X-axis direction. Two mounting seats 3 are slidably connected to the crossbeam 54 along the X-axis direction, and the bottom ends of the two mounting seats 3 are respectively located between the two groups of rollers 16. A group of second pressing wheels 17 are rotatably connected to the side of the bottom end of each mounting seat 3 facing the adjacent roller 16, and the number of each group of second pressing wheels 17 is four. A channel is formed between a group of rollers 16 and an adjacent group of second pressing wheels 17 for the raised ends of the paperboard 10 to pass through, and the two groups of second pressing wheels 17 will squeeze the folds at both ends of the paperboard 10 when the two raised ends of the paperboard 10 pass through the two channels.

[0039] Reference Figure 2 , Figure 5 The cross beam 54 is also provided with a third control mechanism 8 for controlling the sliding of the two mounting seats 3. The third control mechanism 8 includes a third screw rod 82 rotatably connected to the cross beam 54, and a third motor 81 fixed to the cross beam 54 for driving the third screw rod 82 to rotate. The third screw rod 82 is provided with two threaded sections with opposite thread directions, and the two mounting seats 3 are respectively threadedly connected to the two threaded sections of the third screw rod 82.

[0040] Reference Figure 2 , Figure 5 and Figure 6A cavity 32 is provided in the mounting seat 3, and a plurality of adsorption holes 31 are provided on a surface of each cavity 32 close to the adjacent roller 16, and a plurality of exhaust holes 33 are provided on a side wall of the cavity 32 away from the plurality of adsorption holes 31. A first rotating rod 34 is rotatably connected in the cavity 32, and the rotating axis of the first rotating rod 34 is parallel to the X-axis. A plurality of fan blades 35 are evenly arranged on the first rotating rod 34. When the first rotating rod 34 rotates, the plurality of fan blades 35 rotate with it, so that the outside air is drawn into the cavity 32 from the plurality of adsorption holes 31 and discharged from the plurality of exhaust holes 33, so that the plurality of adsorption holes 31 generate adsorption force, so as to adsorb the end of the paperboard 10 when the end of the paperboard 10 passes through the channel.

[0041] Reference Figure 2 , Figure 5 and Figure 6 The mounting seat 3 is also provided with a plurality of driving parts 4 for driving the plurality of first rotating rods 34 to rotate, and the driving parts 4 include a second rotating rod 41 rotatably connected to the bottom of the mounting seat 3, two rotating wheels 42 fixed on the second rotating rod 41 for contacting the paperboard 10, a third rotating rod 43 rotatably connected to the mounting seat 3, a first bevel gear 44 fixedly connected to the second rotating rod 41, a second bevel gear 45 fixedly connected to the bottom end of the third rotating rod 43 and meshing with the first bevel gear 44, a third bevel gear 46 fixedly connected to the top end of the second rotating rod 41, and a fourth bevel gear 47 fixedly connected to the first rotating rod 34 and meshing with the third bevel gear 46. The axis of the first bevel gear 44 and the axis of the second rotating rod 41 are parallel to the X axis, the axis of the second bevel gear 45, the third rotating rod 43, and the third bevel gear 46 are parallel to the Z axis, the axis of the fourth bevel gear 47 coincides with the axis of the third rotating rod 43, and the first bevel gear 44 is located between the two rotating wheels 42.

[0042] Reference Figure 2 Two guide belts 18 are also installed on the side of the two second frames 15 away from each other. The raised end of the paperboard 10 collides with the guide belt 18 after passing through the channel and is folded onto the paperboard 10 under the guidance of the guide belt 18.

[0043] Reference Figure 1-Figure 6 The specific steps of using the folding machine in this application are as follows: First, the distance between the two first frames 52 is adjusted according to the size and folded position of the paperboard 10. When adjusting the distance between the frames, the two first motors 61 are first started, and the rotation of the two first motors 61 will drive the two first screws 62 to rotate, so that the two frames move closer to each other or move away from each other, thereby adjusting the distance between the two first pressing wheels 12, so that the two first pressing wheels 12 can press the paperboard 10 at a predetermined position.

[0044] Then, the distance between the two first gears and the adjacent conveyor belts is adjusted according to the thickness of the paperboard 10. When adjusting the first gear, the fourth motor 91 is first started, and the fourth motor 91 is started to rotate the fourth screw rod 92 to control the upward and downward sliding of the slider 56, thereby adjusting the distance between the first pressure wheel 12 and the conveyor belt.

[0045] After the positions of the two first frames 52 are adjusted, the positions of the two second frames 15 need to be adjusted so that the two second frames 15 are docked with the two first frames 52. When the positions of the two second frames 15 are adjusted, the second motor 72 is first started, and the second motor 72 is started to rotate the second screw rod 71, and the rotation of the second motor 72 is driven by the second screw rod 71, so that the two second frames 15 move and dock with the two first frames 52.

[0046] After the positions of the two second frames 15 are adjusted, the positions of the two sets of rollers 16 will also move with the two second frames 15. At this time, the positions of the two mounting seats 3 must be adjusted according to the thickness of the cardboard 10. When the positions of the two mounting seats 3 are adjusted, the third motor 81 is first started. The rotation of the second motor 72 will drive the second screw rod 71 to rotate, thereby driving the two mounting seats 3 to move, thereby adjusting the distance between the two sets of second gears and the two sets of rollers 16, so as to achieve the purpose of adjusting the position and width of the two channels, so that the lifted end of the cardboard 10 can smoothly enter the channel, and the two sets of second gears can press the folds at both ends of the cardboard 10 more accurately.

[0047] Then, the folding work of the cardboard 10 can be started. In order to quickly feed the cardboard 10 into the folding machine, an automatic feeding machine for the cardboard 10 can be set at the entrance of the two frames to improve the folding efficiency. When the folding machine starts working, the worker directly puts a stack of cardboards 10 into the automatic feeding machine, and then the automatic feeding machine will automatically feed the cardboards 10 one by one into the entrance of the two first frames 52 and be transported by two conveyor belts.

[0048] During the conveyance of the cardboard 10 , the two first pressing wheels 12 press the cardboard 10 to form two folds, and then the two ends of the cardboard 10 contact the two first tubular members 13 . During the conveyance of the cardboard 10 , the two first tubular members 13 lift the two ends of the cardboard 10 .

[0049] Then the cardboard 10 is conveyed into the two second frames 15 , and then the two ends of the cardboard 10 that are lifted enter the two channels, and then the two sets of rollers 16 and the two sets of second pressing wheels 17 further squeeze the folds of the cardboard 10 , so that the two ends of the cardboard 10 can be easily turned over and folded onto the cardboard 10 .

[0050] When both ends of the cardboard 10 enter the two channels, the cardboard 10 will contact the rotating wheels 42. Therefore, the cardboard 10 will rotate with multiple rotating wheels 42 during the transmission process. The rotation of multiple rotating wheels 42 will rotate the second rotating rod 41 and the first bevel gear 44 connected thereto. The rotation of the first bevel gear 44 will rotate the fourth bevel gear 47 and the first rotating rod 34 through the second bevel gear 45, the third rotating rod 43, and the third bevel gear 46, thereby rotating the multiple fan blades 35 and causing the multiple adsorption holes 31 to generate adsorption force.

[0051] When the lifted end of the cardboard 10 passes through the channel, it will be adsorbed by the multiple adsorption holes 31, and when the two sets of second pressing wheels 17 and the two sets of rollers 16 squeeze the crease for the second time, the lifted end of the cardboard 10 will be prevented from shaking greatly, and the two sets of second pressing wheels 17 and the two sets of rollers 16 will be prevented from being pressed off when the crease is pressed for the second time. In this way, the two indentations can be effectively overlapped, so that the lifted ends of the cardboard 10 are the same length and close to each other when folded onto the cardboard 10, so that the cardboard 10 can meet the requirements of the nail pasting operation.

[0052] After passing through the two channels, the two ends of the cardboard 10 will be turned over and folded onto the cardboard 10 under the guidance of the two guide belts 18, thereby completing the folding operation of a cardboard 10. The folded cardboard 10 can be directly conveyed to the nail gluing machine through the conveyor belt, and the nail gluing operation is performed on the two folded ends of the cardboard 10 to complete the preliminary processing of the carton.

[0053] Of course, the above are only typical examples of the present application. In addition, the present application may have many other specific implementation methods. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present application.

Claims

1. A cardboard folding machine, characterized in that: The invention comprises a first frame (11) and a second frame (14) connected to each other, wherein the first frame (11) and the second frame (14) are both provided with a conveying mechanism (2), the first frame (11) is rotatably connected with two first pressing wheels (12), the two first pressing wheels (12) are used to press the paperboard (10) during the conveying process of the paperboard (10) to form a fold, and first tubular members (13) are provided on both sides of the first frame (11), the first tubular members (13) are in contact with the end of the paperboard (10) during the conveying process of the paperboard (10), so that the end of the paperboard (10) is moved along the fold. The second frame (14) is also rotatably connected with two groups of rollers (16) and two groups of second pressing wheels (17), and a channel is formed between each group of the rollers (16) and each group of the second pressing wheels (17) for the lifted end of the paperboard (10) to pass through, and each group of the second pressing wheels (17) presses the fold of the paperboard (10) when the lifted end of the paperboard (10) passes through the channel. The second frame (14) is also provided with two guide belts (18), and the lifted end of the paperboard (10) collides with the guide belts (18) after passing through the channel and is folded onto the paperboard (10) under the guidance of the guide belts (18).

2. A cardboard folding machine according to claim 1, characterized in that: Two mounting seats (3) are provided on the second frame (14), the bottom ends of the two mounting seats (3) are located between the two groups of rollers (16), the two groups of the second pressing wheels (17) are rotatably connected to the bottom ends of the two mounting seats (3), a plurality of cavities (32) are provided in the mounting seat (3), a plurality of adsorption holes (31) are provided on a side wall of each cavity (32) away from the plurality of adsorption holes (31), and a plurality of exhaust holes (33) are provided on a side wall of each cavity (32) away from the plurality of adsorption holes (31). ) are rotatably connected with first rotating rods (34), each of the first rotating rods (34) is provided with a plurality of fan blades (35), and the mounting seat (3) is also provided with a plurality of driving parts (4) for driving the plurality of first rotating rods (34) to rotate, and when the first rotating rods (34) rotate, the plurality of fan blades (35) rotate with them, thereby sucking outside air from the plurality of adsorption holes (31) into the cavity (32) and exhausting it from the plurality of exhaust holes (33), so that the plurality of adsorption holes (31) generate adsorption force, thereby adsorbing the end of the paperboard (10) when the end of the paperboard (10) passes through the channel.

3. A cardboard folding machine according to claim 2, characterized in that: The driving part (4) comprises a second rotating rod (41) rotatably connected to the bottom of the mounting seat (3), a rotating wheel (42) provided on the second rotating rod (41) for contacting the paperboard (10), a third rotating rod (43) rotatably connected to the mounting seat (3), a first bevel tooth (44) provided on the second rotating rod (41), a second bevel tooth (45) provided at the bottom end of the third rotating rod (43) and meshing with the first bevel tooth (44), a third bevel tooth (46) provided at the top end of the second rotating rod (41), and a fourth bevel tooth (47) provided on the first rotating rod (34) and meshing with the third bevel tooth (46).

4. A cardboard folding machine according to claim 2, characterized in that: The first frame (11) comprises a first base (51), two first frames (52) slidably connected to the first base (51), a first control mechanism (6) for controlling the sliding of the two first frames (52), two first pressing wheels (12) respectively rotatably connected to the two first frames (52), two first tubular members (13) respectively arranged on the two first frames (52), the second frame (14) comprises a second base (19), two second frames (15) slidably connected to the second base (19), two supporting columns (53), a crossbeam (54) with two ends respectively fixed to the two supporting columns (53), a second control mechanism (7) for controlling the sliding of the two second frames (15), the two second frames The first frame (11) and the second base (19) are located between the two support columns (53); the two mounting seats (3) are respectively slidably connected to the crossbeam (54); the two guide belts (18) are respectively arranged on the two frames; the crossbeam (54) is also provided with a third control mechanism (8) for controlling the sliding of the two mounting seats (3); the two groups of rollers (16) are respectively rotatably connected to the two second frames (15); the two guide belts (18) are respectively arranged on the two second frames (15); the conveying mechanism (2) arranged on the first frame (11) includes two conveying belts respectively arranged on the two second frames (15); and the conveying mechanism (2) arranged on the second frame (14) includes conveying belts respectively arranged on the two second frames (15).

5. A cardboard folding machine according to claim 4, characterized in that: The first control mechanism (6) comprises a first motor (61) arranged on one side of the first base (51), a first screw rod (62) rotatably connected to the base and connected to the output shaft of the first motor (61), the first screw rod (62) being provided with two threaded sections with opposite thread directions, and the two first frames (52) being respectively threadedly connected to the two threaded sections of the first screw rod (62).

6. A cardboard folding machine according to claim 4, characterized in that: The second control mechanism (7) comprises a second motor (72) arranged on one side of the second base (19), a second screw rod (71) rotatably connected to the base and connected to the output shaft of the second motor (72), the second screw rod (71) being provided with two threaded sections with opposite thread directions, and the two second frames (15) being respectively threadedly connected to the two threaded sections of the second screw rod (71).

7. A paperboard folding machine according to claim 4, characterized in that: The third control mechanism (8) comprises a third screw rod (82) rotatably connected to the cross beam (54), and a third motor (81) disposed on the cross beam (54) for driving the third screw rod (82) to rotate. The third screw rod (82) is provided with two threaded sections with opposite thread directions, and the two mounting seats (3) are respectively threadedly connected to the two threaded sections of the third screw rod (82).

8. A paperboard folding machine according to claim 4, characterized in that: A guide rail (55) is provided in the first frame (52), a slider (56) is slidably connected to the guide rail (55), the first pressure wheel (12) is rotatably connected to the slider (56), and a fourth control mechanism (9) for controlling the slider (56) to slide up and down is also provided in the frame.

9. A cardboard folding machine according to claim 8, characterized in that: The fourth control mechanism (9) comprises a fourth motor (91) arranged in a frame body and a fourth screw rod (92) rotatably connected to the frame body, the fourth screw rod (92) is connected to the output shaft of the fourth motor (91), and the slider (56) is threadedly connected to the fourth screw rod (92).

Images