Full-automatic paper box folding forming corner pasting machine

Abstract

This invention relates to the field of corner pasting machines, and more particularly to a fully automatic cardboard box folding and corner pasting machine. It includes a frame, on which are mounted a lifting and feeding mechanism, a suction mechanism (mounted above the lifting and feeding mechanism on the frame for suction of cardboard and feeding to a feeding mechanism), a feeding mechanism (mounted above the lifting and feeding mechanism on the frame for straightening the cardboard fed by the suction mechanism and conveying it to the molding station for temporary support), a molding mechanism, a corner pasting mechanism, and a box feeding conveyor belt. The entire process from cardboard feeding, suction, feeding to molding and corner pasting can be completed in one machine, with a high degree of automation and integration, improving work efficiency. The feeding mechanism straightens the cardboard fed by the suction mechanism, ensuring that the cardboard does not deviate at the molding station, resulting in a square box shape and improved molding quality.

Description

Technical Field

[0001] This invention relates to the field of corner attaching machine technology, and in particular to a fully automatic cardboard box folding and corner attaching machine. Background Technology

[0002] Currently, the folding and forming process of paper boxes requires the cardboard to be cut on a die-cutting machine first, and all fold lines to be pressed out. Then, it enters a corner gluing machine to complete the forming of the paper box. The steps include feeding, molding, and unloading. Traditional paper box corner gluing machines have low levels of automation and integration and cannot complete the fully automatic forming of paper boxes. Workers are required to assist in the operation. Furthermore, the precise positioning of the cardboard during feeding and molding is crucial before it enters the molding fixture. Since the dimensions of different batches of cardboard vary, accurately feeding the cardboard into the molding station is the key to paper box forming. If the position of the cardboard is deviated, it will lead to an incorrect box shape, defective products, and affect the forming quality. There is currently no good solution to the above problems. Summary of the Invention

[0003] To overcome the shortcomings of existing technologies, this invention provides a fully automatic cardboard box folding and corner attaching machine, which solves the problems of low automation and integration of previous cardboard box corner attaching machines and the need for manual assistance in the middle. It also solves the problem of inaccurate positioning when the cardboard is fed into the molding station.

[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: A fully automatic cardboard box folding and corner-attaching machine includes a frame, on which are provided: A lifting and feeding mechanism is used to lift and feed paperboard and guide the lifting and feeding of the paperboard. The material suction mechanism is installed on the frame above the lifting and feeding mechanism and is used to suction the cardboard and feed it to the feeding mechanism. The feeding mechanism is installed on the frame above the lifting and feeding mechanism and is used to straighten the cardboard sent by the suction mechanism and transport it to the molding station for temporary support. A molding mechanism is located at the molding station of the machine frame and is used to drive the cardboard downward and serve as an inner mold when the cardboard is folded and formed. The corner-attaching mechanism is located below the molding station of the machine frame and is used to fold the cardboard carried by the molding mechanism into a cardboard box and attach and fix the four corners of the cardboard box. The box feeding conveyor belt is located on the frame below the corner attaching mechanism and is used to transport the formed paper boxes.

[0005] The lifting and feeding mechanism includes a tray with two vertically arranged annular chains on each side. The tray is fixedly connected to the annular chains. A cardboard positioning sensor is installed on the frame above the annular chains. The tops of the two annular chains on the same side are supported by an upper chain shaft installed on the top of the frame, and the bottoms of the two annular chains on the same side are supported by a lower chain shaft installed on the bottom of the frame. The end of the lower chain shaft is provided with a worm gear, which meshes with a worm installed on a drive shaft at the bottom of the frame. The end of the drive shaft is connected to a lifting drive motor. A left guide plate and a right guide plate are vertically spaced at the rear of the tray. The upper and lower parts of the left and right guide plates are slidably connected to horizontal guide rods installed on the frame via linear bearings. A first bidirectional lead screw is provided between the two horizontal guide rods. The two sides of the first bidirectional lead screw are connected to nuts on the left and right guide plates, respectively. The end of the first bidirectional lead screw is connected to a first adjusting motor.

[0006] The material suction mechanism includes a locking seat fixedly installed on the frame, a horizontal sliding seat slidably installed on the locking seat via a slide rail, the horizontal sliding seat being connected to a material suction horizontal cylinder installed on the locking seat, a vertical sliding frame slidably installed on the outside of the horizontal sliding seat via a slide rail, the top of the vertical sliding frame being connected to a material suction vertical cylinder installed on the horizontal sliding seat, and two cardboard suction cups being installed at the bottom of the vertical sliding frame.

[0007] The feeding mechanism includes an upper conveyor belt seat installed at the bottom of the locking seat, in which an upper conveyor belt is installed. The rear end of the upper conveyor belt is supported by a rotating shaft within the upper conveyor belt seat, and the front end of the upper conveyor belt is supported by an upper roller mounted on the frame. A lower conveyor belt seat is installed on the frame below the upper conveyor belt seat, in which a lower conveyor belt is installed. The rear end of the lower conveyor belt is supported by a rotating shaft within the lower conveyor belt seat, and the front end of the lower conveyor belt is supported by a lower roller mounted on the frame. One end of the upper roller and the lower roller are connected to a feeding motor via a double-sided toothed synchronous belt. The feeding motor is connected to the feeding motor via a double-sided toothed synchronous belt. Synchronous belts drive the upper and lower rollers to rotate synchronously in opposite directions, which is used to convey the cardboard backward. Left and right support frames are provided on both sides of the upper and lower conveyor belts. The left and right support frames each include a movable plate. The movable plate is slidably mounted on the two main shaft beams of the frame through linear bearings. A second double-acting screw is provided between the two main shaft beams. The two sides of the second double-acting screw are respectively connected to nuts on the movable plate. The end of the second double-acting screw is connected to a second adjusting motor. A straightening plate is installed on the front side of the movable plate, and a support plate and a sliding plate are installed on the rear side of the movable plate. The sliding plate and the straightening plate are aligned.

[0008] The molding mechanism includes a gantry beam mounted on a frame, an upper molding motor mounted on the gantry beam, the output shaft of the upper molding motor being connected to a rack via gears, the rack being slidably mounted in a rack seat on the gantry beam, an upper mold mounted at the bottom of the rack, a lower suction cup located below the upper mold, the lower suction cup being mounted on the top of a support rod, the bottom of the support rod being fixed to a mounting base, the mounting base being slidably mounted on a slide rail on the bottom mounting plate of the frame, the mounting base being fixedly connected to an annular synchronous belt vertically mounted on the bottom mounting plate of the frame, the annular synchronous belt being driven to rotate by the lower molding motor.

[0009] The corner-attaching mechanism includes a left slide plate and a right slide plate slidably mounted on the frame. The positions of the left and right slide plates are adjusted by handwheels and screws. Two thermal bonding mechanisms are installed on the left and right slide plates respectively. The positions of the thermal bonding mechanisms are also adjusted by handwheels and screws. Each thermal bonding mechanism includes a sliding base. Two short-side cardboard box guide plates arranged at 90-degree angles are installed at the front end of the sliding base. A thermocouple holder is provided between the two short-side cardboard box guide plates. The front side of the thermocouple holder has a 90-degree right-angle groove. The rear side of the thermocouple holder is connected to one end of a push rod connecting seat. The other end of the push rod connecting seat... The end is connected to the heat-bonding cylinder. A moving blade is fixed at the top of the push rod connecting seat near the thermocouple seat. A knife holder is provided above the push rod connecting seat. A fixed blade is provided at the front end of the knife holder. The moving blade and the fixed blade cooperate to cut the tape. A roller seat is provided above the knife holder. A drive roller is installed inside the front end of the roller seat. The drive roller is connected to the tape drive motor through a transmission belt. A pressure roller is installed above the drive roller through a pressure roller seat. The pressure roller cooperates with the drive roller to feed the tape forward. A tape groove is provided on the upper surface of the roller seat. A tape pulley is connected to the rear end of the roller seat through a bracket.

[0010] The present invention adopts the above-described solution and has the following advantages: By installing a lifting and feeding mechanism, a suction mechanism, a feeding mechanism, a molding mechanism, a corner-attaching mechanism, and a box-feeding belt on the frame, the cardboard can complete the entire process from feeding, suction, feeding to molding and corner-attaching in one machine. It has a high degree of automation and integration, which can improve work efficiency. The lifting and feeding mechanism can guide the lifting of the cardboard while lifting it, and can be adjusted according to different paper sizes to prevent the paper from tilting during the lifting and feeding process. The feeding mechanism can straighten the cardboard sent by the suction mechanism, and can also be adjusted according to different paper sizes before conveying it to the molding station for temporary support, ensuring that the cardboard does not deviate at the molding station, so that the formed box is square and the molding quality is improved. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0012] Figure 2This is a schematic diagram of the lifting and feeding mechanism of the present invention.

[0013] Figure 3 This is a schematic diagram of the material suction mechanism of the present invention.

[0014] Figure 4 This is a schematic diagram of the feeding mechanism of the present invention.

[0015] Figure 5 This is a schematic diagram of the molding mechanism of the present invention.

[0016] Figure 6 This is a schematic diagram of the corner-attaching mechanism of the present invention.

[0017] Figure 7 This is a schematic diagram of the thermal bonding mechanism of the present invention.

[0018] Figure 8 This is a schematic diagram of the structure of the paper box after molding according to the present invention.

[0019] In the diagram, 1. Frame; 2. Cardboard; 3. Lifting and loading mechanism; 4. Suction mechanism; 5. Feeding mechanism; 6. Molding mechanism; 7. Corner pasting mechanism; 8. Box feeding belt; 9. Cardboard box; 10. Pallet; 11. Circular chain; 12. Cardboard positioning sensor; 13. Upper chain shaft; 14. Lower chain shaft; 15. Worm gear; 16. Drive shaft; 17. Worm; 18. Lifting drive motor; 19. Left guide plate; 20. 21. Right guide plate; 22. Horizontal guide rod; 23. First bidirectional lead screw; 24. First adjusting motor; 25. Locking seat; 26. Horizontal sliding seat; 27. Material suction horizontal cylinder; 28. Vertical sliding frame; 29. ​​Material suction vertical cylinder; 30. Cardboard suction cup; 31. Upper conveyor belt seat; 32. Upper conveyor belt; 33. Lower conveyor belt seat; 34. Lower conveyor belt; 35. Lower roller; 36. Double-sided toothed synchronous belt. 37. Feeding motor; 38. Moving plate; 39. Main shaft beam; 40. Second double-direction lead screw; 41. Second adjusting motor; 42. Straightening plate; 43. Support plate; 44. Sliding plate; 45. Gantry beam; 46. Upper die pressing motor; 47. Gear; 48. Rack; 49. Rack seat; 50. Upper die; 51. Lower suction cup; 52. Support rod; 53. Card holder; 54. Circular synchronous belt; 55. Lower die pressing motor; 56. 57. Left slide plate, 58. Right slide plate, 59. Handwheel screw, 60. Thermal bonding mechanism, 61. Sliding base, 62. Short side cardboard box guide plate, 63. Thermocouple holder, 64. Push rod connecting seat, 65. Thermal bonding cylinder, 66. Moving blade, 67. Blade holder seat, 68. Fixed blade, 69. Roller seat, 70. Drive roller, 71. Belt drive motor, 72. Pressure roller seat, 73. Pressure roller, 74. Belt pulley. Detailed Implementation

[0020] To clearly illustrate the technical features of this solution, the invention will be described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0021] like Figure 1-8 As shown, a fully automatic cardboard box folding and corner-attaching machine includes a frame 1, on which: The lifting and feeding mechanism 3 is used to lift and feed the cardboard 2 and guide the lifting and feeding of the cardboard 2. The material suction mechanism 4 is installed on the frame above the lifting and feeding mechanism 3 and is used to suction the cardboard and feed it to the feeding mechanism 5. The feeding mechanism 5 is installed on the frame above the lifting and feeding mechanism 3. It is used to straighten the cardboard sent by the suction mechanism 4 and transport it to the molding station 6 for temporary support. The molding mechanism 6 is located at the molding station position on the frame and is used to drive the cardboard downward and serve as an inner mold when the cardboard is folded and formed. Corner gluing mechanism 7, which is located below the molding station of the machine frame, is used to fold the cardboard carried by the molding mechanism 6 into a cardboard box and glue and fix the four corners of the cardboard box. The box feeding conveyor belt 8 is located on the frame below the corner attaching mechanism 7 and is used to transport the formed paper boxes 9.

[0022] The lifting and loading mechanism 3 includes a tray 10, with two vertically arranged annular chains 11 on each side of the tray 10. The tray 10 is fixedly connected to the annular chains 11. A cardboard positioning sensor 12 is installed on the frame 1 above the annular chains 11. The tops of the two annular chains 11 on the same side are supported by an upper chain shaft 13 installed on the top of the frame, and the bottoms of the two annular chains 11 on the same side are supported by a lower chain shaft 14 installed at the bottom of the frame. A worm gear 15 is provided at the end of the lower chain shaft 14, and the worm gear 15 is connected to a drive shaft 1 installed at the bottom of the frame. The worm gear 17 on the 6 meshes with the drive shaft 16, and the end of the drive shaft 16 is connected to the lifting drive motor 18; the rear side of the tray 10 is vertically spaced with a left guide plate 19 and a right guide plate 20, the upper and lower parts of the left guide plate 19 and the right guide plate 20 are slidably connected to the horizontal guide rods 21 mounted on the frame through linear bearings, and a first bidirectional lead screw 22 is provided between the two horizontal guide rods 21. The two sides of the first bidirectional lead screw 22 are connected to the nuts on the left guide plate 19 and the right guide plate 20, respectively, and the end of the first bidirectional lead screw 22 is connected to the first adjusting motor 23. When the first adjusting motor 23 is working, it can drive the left guide plate 19 and the right guide plate 20 to move in opposite directions along the two horizontal guide rods 21 via the first bidirectional lead screw 22, so as to adjust the distance between the left guide plate 19 and the right guide plate 20 to match the short side width of the cardboard 2. After the cardboard 2 is placed on the tray 10, the short side of the cardboard is exactly placed between the left guide plate 19 and the right guide plate 20. When the tray 10 lifts the cardboard, the left guide plate 19 and the right guide plate 20 can guide the cardboard to prevent it from deviating. When the lifting drive motor 18 is working, it can drive the drive shaft 16 to rotate. The drive shaft 16 drives the worm gears 17 at both ends to rotate. The worm gears 17 then drive the worm wheel 15 at the end of the lower chain shaft 14 to rotate, thereby driving the lower chain shafts 14 on both sides to rotate synchronously, and then driving the four ring chains 11 to rotate synchronously, finally realizing the lifting and lowering of the tray 10. After placing the stack of cardboard 2 on the tray 10, the cardboard 2 can be loaded.

[0023] The material suction mechanism 4 includes a locking seat 24 fixedly installed on the frame. A horizontal sliding seat 25 is slidably installed on the locking seat 24 via a slide rail. The horizontal sliding seat 25 is connected to a material suction horizontal cylinder 26 installed on the locking seat 24. A vertical sliding frame 27 is slidably installed on the outside of the horizontal sliding seat 25 via a slide rail. The top of the vertical sliding frame 27 is connected to a material suction vertical cylinder 28 installed on the horizontal sliding seat 25. Two cardboard suction cups 29 are installed at the bottom of the vertical sliding frame 28. After the cardboard on the tray 10 is in place, the feeding mechanism 4 starts to work. First, the feeding horizontal cylinder 26 is activated, pushing the horizontal sliding seat 25 forward to above the cardboard. Then, the feeding vertical cylinder 28 is activated, driving the vertical sliding frame 27 downward, so that the cardboard suction cup 29 at the bottom of the vertical sliding frame 27 picks up the cardboard. Then, the feeding vertical cylinder 28 reverses its action, driving the vertical sliding frame 27 upward, and the feeding horizontal cylinder 26 also reverses its action, driving the horizontal sliding seat 25 backward to send the cardboard between the upper conveyor belt 31 and the lower conveyor belt 34, and the feeding operation can begin.

[0024] The feeding mechanism 5 includes an upper conveyor belt seat 30 installed at the bottom of the locking seat 24. An upper conveyor belt 31 is installed inside the upper conveyor belt seat 30. The rear end of the upper conveyor belt 31 is supported by a rotating shaft inside the upper conveyor belt seat 30, and the front end of the upper conveyor belt 31 is supported by an upper roller 32 installed on the frame. A lower conveyor belt seat 33 is installed on the frame below the upper conveyor belt seat 30. A lower conveyor belt 34 is installed inside the lower conveyor belt seat 33. The rear end of the lower conveyor belt 34 is supported by a rotating shaft inside the lower conveyor belt seat 33, and the front end of the lower conveyor belt 34 is supported by a lower roller 35 installed on the frame. One end of the upper roller 32 and the lower roller 35 are connected to a feeding motor 37 via a double-sided toothed synchronous belt 36. The feeding motor 37 drives the upper roller 32 through the double-sided toothed synchronous belt 36. The upper conveyor belt 31 and the lower conveyor belt 34 rotate synchronously in opposite directions with the lower roller 35, thereby driving the upper conveyor belt 31 and the lower conveyor belt 34 to rotate synchronously in opposite directions, which is used to drive the cardboard to be conveyed backward. The upper conveyor belt 31 and the lower conveyor belt 34 are provided with a left support frame and a right support frame on both sides. The left support frame and the right support frame each include a moving plate 38. The moving plate 38 is slidably mounted on the two main shaft beams 39 of the frame through linear bearings. A second bidirectional screw 40 is provided between the two main shaft beams 39. The two sides of the second bidirectional screw 40 are respectively connected to nuts on the moving plate 38. The end of the second bidirectional screw 40 is connected to the second adjusting motor 41. A straightening plate 42 is installed on the front side of the moving plate 38. A support plate 43 and a sliding plate 44 are installed on the rear side of the moving plate 38. The sliding plate 44 and the straightening plate 42 are aligned. When the second adjusting motor 37 is working, it can drive the second bidirectional lead screw 40 to rotate, thereby driving the moving plates 38 on both sides to move synchronously in opposite directions along the two main shaft beams 39, so that the distance between the two straightening plates 42 matches the long side dimension of the cardboard. The two straightening plates 42 can straighten the cardboard before it enters the upper conveyor belt 31 and the lower conveyor belt 34 to prevent the cardboard from deviating. When the upper conveyor belt 31 and the lower conveyor belt 34 rotate, they can transport the cardboard to the pallet 43 and the sliding plate 44. The pallet 43 on both sides is used to temporarily support the cardboard, and the sliding plate 44 on both sides is used to limit and guide the cardboard, so that the cardboard accurately enters the molding station. The molding station can be equipped with a position sensor to detect the position of the cardboard.

[0025] The molding mechanism 6 includes a gantry beam 45 mounted on the frame. An upper molding motor 46 is mounted on the gantry beam 45. The output shaft of the upper molding motor 46 is connected to a rack 48 via a gear 47. The rack 48 is slidably mounted in a rack seat 49 on the gantry beam 45. An upper mold 50 is mounted at the bottom of the rack 48. A lower suction cup 51 is provided below the upper mold 50. The lower suction cup 51 is mounted on the top of a support rod 52. The bottom of the support rod 52 is fixed to a card holder 53. The card holder 53 is slidably mounted on a slide rail on the bottom mounting plate of the frame. The card holder 53 is fixedly connected to an annular synchronous belt 54 vertically mounted on the bottom mounting plate of the frame. The annular synchronous belt 54 is driven to rotate by the lower molding motor 55. After the cardboard is precisely molded at the station, the molding mechanism 6 begins operation. The upper molding motor 46 operates, driving the rack 48 downwards via the gear 47. The rack 48 then drives the upper mold 50 at the bottom downwards. Simultaneously, the lower molding motor 55 operates, driving the clamping seat 53 upwards along the slide rail via the annular synchronous belt 54. The clamping seat 53, via the support rod 52, drives the lower suction cup 51 upwards. The upper mold 50 and the lower suction cup 51 cooperate to clamp and fix the cardboard. Once the cardboard is fixed, no further support is needed. The second adjusting motor 41 operates, driving the two side support plates 43 outwards via the second bidirectional lead screw 40 to detach from the cardboard. Molding can then proceed. The upper molding motor 46 and the lower molding motor 55 operate simultaneously, causing the upper mold 50 and the lower suction cup 51 to move the cardboard downwards into the corner-attaching mechanism 7. The corner-attaching mechanism 7 can be equipped with a positioning sensor to detect the cardboard's positioning.

[0026] The corner-attaching mechanism 7 includes a left slide plate 56 and a right slide plate 57 slidably mounted on the frame. The positions of the left slide plate 56 and the right slide plate 57 are adjusted by a handwheel screw 58. Two thermal bonding mechanisms 59 are respectively installed on the left slide plate 56 and the right slide plate 57. The positions of the thermal bonding mechanisms 59 are adjusted by a handwheel screw to match the size of the cardboard. The thermal bonding mechanism 59 includes a sliding base 60. Two short-side cardboard box guide plates 61 arranged at 90-degree right angles are installed at the front end of the sliding base 60. A thermocouple seat 62 is provided between the two short-side cardboard box guide plates 61. The front side of the thermocouple seat 62 has a 90-degree right-angle groove. The rear side of the thermocouple seat 62 is connected to one end of a push rod connecting seat 63. The other end of the push rod connecting seat 63 is connected to a thermal bonding cylinder 64. The top of the push rod connecting seat 63 is close to the thermocouple seat 64. A movable blade 65 is fixed at position 2. A blade holder 66 is provided above the push rod connecting seat 63. A fixed blade 67 is provided at the front end of the blade holder 66. The movable blade 65 and the fixed blade 67 cooperate to cut the tape. A roller seat 68 is provided above the blade holder 66. A drive roller 69 is installed inside the front end of the roller seat 68. The drive roller 69 is connected to the tape drive motor 70 through a transmission belt. A pressure roller 72 is installed above the drive roller 69 through a pressure roller seat 71. The pressure roller 72 cooperates with the drive roller 69 to feed the tape forward. A tape groove 73 is provided on the upper surface of the roller seat 68. A tape pulley 74 is connected to the rear end of the roller seat 68 through a bracket. The tape on the tape pulley 74 passes through the tape groove 73 and enters between the pressure roller 72 and the drive roller 69. Then it passes through the hole in the fixed blade 67 and hangs down to the bottom of the thermocouple seat 62. During the downward movement of the cardboard, the two short-side cardboard guide plates 61 of each thermal bonding mechanism guide the short sides of the cardboard and fold them upward. After the cardboard moves to the bottom, it stops moving. At this time, the two short-side cardboard guide plates 61 have folded the short sides of the cardboard upward to form a cardboard box shape. Then, the thermal bonding cylinder 64 is activated, driving the thermocouple seat 62 forward through the push rod connecting seat 63. The thermocouple seat 62 pushes the hanging tape forward so that the tape adheres to the short side joint of the cardboard box. During the forward movement of the thermocouple seat 62, the moving blade 65 at its top cooperates with the fixed blade 67 to cut the tape. Under the heating action of the thermocouple seat 62, the tape glues and fixes the short side joint of the cardboard box. Then, the thermal bonding cylinder 64 is activated, driving the thermocouple seat 62 backward through the push rod connecting seat 63. The tape drive motor 70 drives the drive roller 69 to rotate through the transmission belt. The drive roller 69 cooperates with the pressure roller 72 to transport the tape forward for the next use. At this point, the cardboard box has been formed. The upper mold 50 and the lower suction cup 51 drive the cardboard box to continue moving downwards until the cardboard box 9 falls into the box feeding belt 8. The box feeding belt 8 transports the formed cardboard box 9. The upper mold 50 and the lower suction cup 51 then return to their original positions to prepare for the next operation. This process can be repeated to achieve continuous forming of the cardboard box.

[0027] Working principle: During operation, stacks of cardboard 2 are first placed on tray 10. The first adjusting motor 23 operates, driving the left guide plate 19 and right guide plate 20 to move in opposite directions along the two horizontal guide rods 21 via the first bidirectional lead screw 22. This adjusts the distance between the left and right guide plates 19 and 20 to match the short side width of the cardboard 2. After the cardboard 2 is placed on tray 10, its short side is positioned precisely between the left and right guide plates 19 and 20, guiding the cardboard and preventing it from shifting. Then, the lifting drive motor 18 operates, driving the drive shaft 16 to rotate. The drive shaft 16 drives the worm gears 17 at both ends to rotate, which in turn drives the worm wheel 15 at the end of the lower chain shaft 14 to rotate, thereby driving the lower chain shafts 14 on both sides to rotate synchronously. This, in turn, drives the four ring chains 11 to rotate synchronously, ultimately achieving the up-and-down lifting of tray 10, thus realizing the loading of cardboard 2. After the cardboard 2 on the tray 10 is in place, the feeding mechanism 4 starts to work. First, the feeding horizontal cylinder 26 is activated, pushing the horizontal sliding seat 25 forward to above the cardboard. Then, the feeding vertical cylinder 28 is activated, driving the vertical sliding frame 27 downward, so that the cardboard suction cup 29 at the bottom of the vertical sliding frame 27 picks up the cardboard. Then, the feeding vertical cylinder 28 reverses its action, driving the vertical sliding frame 27 upward. The feeding horizontal cylinder 26 also reverses its action, driving the horizontal sliding seat 25 backward to send the cardboard between the upper conveyor belt 31 and the lower conveyor belt 34, and then the feeding operation can be carried out. During feeding, the second adjusting motor 37 operates, driving the second bidirectional lead screw 40 to rotate. This causes the moving plates 38 on both sides to move synchronously in opposite directions along the two main shaft beams 39, matching the distance between the two straightening plates 42 to the long side dimension of the cardboard. The straightening plates 42 can straighten the cardboard before it enters the upper conveyor belt 31 and the lower conveyor belt 34, preventing the cardboard from shifting. Then, the feeding motor 37 operates, driving the upper roller 32 and the lower roller 35 to rotate synchronously in opposite directions via the double-sided toothed synchronous belt 36. This, in turn, drives the upper conveyor belt 31 and the lower conveyor belt 34 to rotate synchronously in opposite directions. When the upper conveyor belt 31 and the lower conveyor belt 34 rotate, they can transport the cardboard to the rear support plate 43 and the sliding plate 44. The support plates 43 on both sides are used to temporarily support the cardboard, and the sliding plates 44 on both sides are used to limit and guide the cardboard, ensuring that the cardboard accurately enters the molding station. The molding station can be equipped with a position sensor to detect the cardboard's position, and then the molding process can begin. During molding, the upper molding motor 46 operates, driving the rack 48 downward through the gear 47. The rack 48 drives the upper mold 50 at the bottom to move downward. At the same time, the lower molding motor 55 operates, driving the clamping seat 53 upward along the slide rail through the annular synchronous belt 54. The clamping seat 53 drives the lower suction cup 51 upward through the support rod 52. The upper mold 50 and the lower suction cup 51 cooperate to clamp and fix the cardboard.After the cardboard is fixed, no further support is needed. The second adjusting motor 41 operates, driving the two side support plates 43 to move outward and detach from the cardboard via the second bidirectional lead screw 40. Then, molding can begin. The upper molding motor 46 and the lower molding motor 55 operate simultaneously, causing the upper mold 50 and the lower suction cup 51 to move the cardboard downward and into the corner-attaching mechanism 7. The corner-attaching mechanism 7 can be equipped with a positioning sensor to detect the cardboard's positioning. During the downward movement of the cardboard by the upper mold 50 and the lower suction cup 51, the two short-side cardboard guide plates 61 of each thermal bonding mechanism in the corner-attaching mechanism 7 can guide and fold the short sides of the cardboard upward. After the cardboard moves to the correct position, it stops moving. At this point, the two short-side cardboard guide plates 61 have folded the short sides of the cardboard upward to form a cardboard box shape. Then, the thermal bonding cylinder 64 actuates, driving the thermocouple holder 62 forward via the push rod connecting seat 63. The thermocouple holder 62 pushes the drooping tape forward to adhere the tape. As the thermocouple holder 62 moves forward, its top moving blade 65 and fixed blade 67 work together to cut the tape at the short side seam of the cardboard box. The tape, heated by the thermocouple holder 62, then bonds and secures the short side seam. Next, the heat-bonding cylinder 64 actuates, driving the thermocouple holder 62 backward via the push rod connecting seat 63. The tape drive motor 70 drives the drive roller 69 to rotate via the transmission belt. The drive roller 69, in conjunction with the pressure roller 72, feeds the tape forward for the next use. At this point, the cardboard box is formed. The upper mold 50 and lower suction cup 51 move the cardboard box downward until it falls into the feeding conveyor belt 8. The feeding conveyor belt 8 then transports the formed cardboard box 9. The upper mold 50 and lower suction cup 51 return to their original positions for the next operation. This repetitive process enables continuous cardboard box forming.

[0028] The above specific embodiments should not be construed as limiting the scope of protection of the present invention. For those skilled in the art, any alternative improvements or modifications made to the embodiments of the present invention shall fall within the scope of protection of the present invention.

[0029] Any aspects of this invention not described in detail are well-known to those skilled in the art.

Claims

1. A fully automatic cardboard box folding, forming, and corner-attaching machine, characterized in that: Includes a frame, on which are provided: A lifting and feeding mechanism is used to lift and feed paperboard and guide the lifting and feeding of the paperboard. The material suction mechanism is installed on the frame above the lifting and feeding mechanism and is used to suction the cardboard and feed it to the feeding mechanism. The feeding mechanism is installed on the frame above the lifting and feeding mechanism and is used to straighten the cardboard sent by the suction mechanism and transport it to the molding station for temporary support. A molding mechanism is located at the molding station of the machine frame and is used to drive the cardboard downward and serve as an inner mold when the cardboard is folded and formed. The corner-attaching mechanism is located below the molding station of the machine frame and is used to fold the cardboard carried by the molding mechanism into a cardboard box and attach and fix the four corners of the cardboard box. The box feeding conveyor belt is located on the frame below the corner attaching mechanism and is used to transport the formed paper boxes.

2. The fully automatic cardboard box folding and corner-attaching machine according to claim 1, characterized in that: The lifting and feeding mechanism includes a tray with two vertically arranged annular chains on each side. The tray is fixedly connected to the annular chains. A cardboard positioning sensor is installed on the frame above the annular chains. The tops of the two annular chains on the same side are supported by an upper chain shaft installed on the top of the frame, and the bottoms of the two annular chains on the same side are supported by a lower chain shaft installed on the bottom of the frame. The end of the lower chain shaft is provided with a worm gear, which meshes with a worm installed on a drive shaft at the bottom of the frame. The end of the drive shaft is connected to a lifting drive motor. A left guide plate and a right guide plate are vertically spaced at the rear of the tray. The upper and lower parts of the left and right guide plates are slidably connected to horizontal guide rods installed on the frame via linear bearings. A first bidirectional lead screw is provided between the two horizontal guide rods. The two sides of the first bidirectional lead screw are connected to nuts on the left and right guide plates, respectively. The end of the first bidirectional lead screw is connected to a first adjusting motor.

3. The fully automatic cardboard box folding and corner-attaching machine according to claim 1, characterized in that: The material suction mechanism includes a locking seat fixedly installed on the frame, a horizontal sliding seat slidably installed on the locking seat via a slide rail, the horizontal sliding seat being connected to a material suction horizontal cylinder installed on the locking seat, a vertical sliding frame slidably installed on the outside of the horizontal sliding seat via a slide rail, the top of the vertical sliding frame being connected to a material suction vertical cylinder installed on the horizontal sliding seat, and two cardboard suction cups being installed at the bottom of the vertical sliding frame.

4. The fully automatic cardboard box folding and corner-attaching machine according to claim 3, characterized in that: The feeding mechanism includes an upper conveyor belt seat installed at the bottom of the locking seat, in which an upper conveyor belt is installed. The rear end of the upper conveyor belt is supported by a rotating shaft within the upper conveyor belt seat, and the front end of the upper conveyor belt is supported by an upper roller mounted on the frame. A lower conveyor belt seat is installed on the frame below the upper conveyor belt seat, in which a lower conveyor belt is installed. The rear end of the lower conveyor belt is supported by a rotating shaft within the lower conveyor belt seat, and the front end of the lower conveyor belt is supported by a lower roller mounted on the frame. One end of the upper roller and the lower roller are connected to a feeding motor via a double-sided toothed synchronous belt. The feeding motor is connected to the feeding motor via a double-sided toothed synchronous belt. Synchronous belts drive the upper and lower rollers to rotate synchronously in opposite directions, which is used to convey the cardboard backward. Left and right support frames are provided on both sides of the upper and lower conveyor belts. The left and right support frames each include a movable plate. The movable plate is slidably mounted on the two main shaft beams of the frame through linear bearings. A second double-acting screw is provided between the two main shaft beams. The two sides of the second double-acting screw are respectively connected to nuts on the movable plate. The end of the second double-acting screw is connected to a second adjusting motor. A straightening plate is installed on the front side of the movable plate, and a support plate and a sliding plate are installed on the rear side of the movable plate. The sliding plate and the straightening plate are aligned.

5. The fully automatic cardboard box folding and corner-attaching machine according to claim 1, characterized in that: The molding mechanism includes a gantry beam mounted on a frame, an upper molding motor mounted on the gantry beam, the output shaft of the upper molding motor being connected to a rack via gears, the rack being slidably mounted in a rack seat on the gantry beam, an upper mold mounted at the bottom of the rack, a lower suction cup located below the upper mold, the lower suction cup being mounted on the top of a support rod, the bottom of the support rod being fixed to a mounting base, the mounting base being slidably mounted on a slide rail on the bottom mounting plate of the frame, the mounting base being fixedly connected to an annular synchronous belt vertically mounted on the bottom mounting plate of the frame, the annular synchronous belt being driven to rotate by the lower molding motor.

6. The fully automatic cardboard box folding and corner-attaching machine according to claim 1, characterized in that: The corner-attaching mechanism includes a left slide plate and a right slide plate slidably mounted on the frame. The positions of the left and right slide plates are adjusted by handwheels and screws. Two thermal bonding mechanisms are installed on the left and right slide plates respectively. The positions of the thermal bonding mechanisms are also adjusted by handwheels and screws. Each thermal bonding mechanism includes a sliding base. Two short-side cardboard box guide plates arranged at 90-degree angles are installed at the front end of the sliding base. A thermocouple holder is provided between the two short-side cardboard box guide plates. The front side of the thermocouple holder has a 90-degree right-angle groove. The rear side of the thermocouple holder is connected to one end of a push rod connecting seat. The other end of the push rod connecting seat... The end is connected to the heat-bonding cylinder. A moving blade is fixed at the top of the push rod connecting seat near the thermocouple seat. A knife holder is provided above the push rod connecting seat. A fixed blade is provided at the front end of the knife holder. The moving blade and the fixed blade cooperate to cut the tape. A roller seat is provided above the knife holder. A drive roller is installed inside the front end of the roller seat. The drive roller is connected to the tape drive motor through a transmission belt. A pressure roller is installed above the drive roller through a pressure roller seat. The pressure roller cooperates with the drive roller to feed the tape forward. A tape groove is provided on the upper surface of the roller seat. A tape pulley is connected to the rear end of the roller seat through a bracket.

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