A box opening machine

Abstract

The present application relates to the technical field of box opening machine, in particular to a kind of box opening machine, including bottom frame, top frame and be arranged on its paper feeding box mechanism, material taking mechanism, unfolding mechanism, moving mechanism, packing mechanism and lifting mechanism.Paper feeding box mechanism realizes intermittent feeding by drive and one-way bearing, gravity moving unit makes first cross push material frame abut against paper box side edge;Material taking mechanism adjusts adsorption size by second cross push material frame;Unfolding mechanism sequentially completes lower outer rocker cover outer opening, inner rocker cover folding and lower outer rocker cover folding, lifting mechanism is completed by third air nozzle Upper outer rocker cover folding;Moving mechanism is moved by supporting frame, second air nozzle and third air nozzle cooperation paper box;Packing mechanism is completed by material supporting unit, push material unit and material blocking unit Packing;Lifting mechanism drives paper box to descend layer by layer in packing stage.The present application realizes the full-process automation of paper box feeding, material taking, rocker cover unfolding, paper box moving and material packing.

Description

Technical Field

[0001] This invention relates to the field of case opener technology, specifically to a case opener. Background Technology

[0002] Carton erectors are commonly used automated equipment in packaging production lines. They are used to automatically open folded cardboard or cartons to form the desired shape for subsequent packing and sealing operations. The entire workflow of a carton erector typically involves multiple processes, including carton storage and feeding, carton picking and conveying, carton flap opening and closing, carton conveying and flipping, and material packing.

[0003] In the existing technology, the devices involved in the above-mentioned processes generally have the following shortcomings: First, in the cardboard box feeding stage, existing devices typically use a motor to continuously drive the feeding wheel to rotate, relying on the friction between the feeding wheel and the cardboard box to feed them out sequentially. This continuous rotation feeding method makes it difficult to precisely match the feeding speed with the opening cycle, easily leading to problems such as cardboard box accumulation due to excessive feeding or empty opening stations due to excessive feeding. Furthermore, stacked cardboard boxes are prone to skew during feeding due to the lack of lateral restraints, resulting in feeding jams or stacking.

[0004] Secondly, in the paper box picking process, existing picking mechanisms usually adopt a fixed push plate or push rod structure. The size and shape of the pushing parts are fixed once they are manufactured. However, in actual production, the specifications of paper boxes often need to be changed and adjusted. Fixed-size pushers cannot be adapted to paper boxes of different specifications, resulting in poor versatility.

[0005] Third, in the flap unfolding stage, the existing flap folding mechanism usually drives the rocker arm directly to fold the inner flap and outer flap inward and close them together through a cylinder or motor. However, due to the interference between the outer flap and the inner flap during the folding process, the outer flap will block the folding path of the inner flap before closing the inner flap, causing the inner flap to fail to fold into place smoothly, which affects the efficiency and quality of carton forming.

[0006] Fourth, in the carton transfer process, after the carton bottom is sealed, the existing carton opening machine usually uses manual handling or robotic arms to transfer the carton to the conveyor line. Manual handling is inefficient, while robotic arms are complex in structure, expensive, and have poor applicability to cartons of different sizes.

[0007] Therefore, a box-opening machine that can solve the above problems is needed. Summary of the Invention

[0008] To achieve the above objectives, the present invention provides the following technical solution: A box-opening machine includes a bottom frame and a top frame disposed on top of the bottom frame. A side channel is provided on one side of the bottom frame, and a top channel is provided on the top frame. The bottom frame and the top frame are provided with: A paper box feeding mechanism is located at one end of the bottom frame and is used to convey the paper box to be formed forward.

[0009] The material handling mechanism, located on the top frame, is used to pick up the paper box and transfer it to the unfolding station.

[0010] An unfolding mechanism, located on the top frame, is used to unfold the flaps of the cardboard box sequentially.

[0011] A moving mechanism, mounted on the bottom frame, is used to receive cartons output from the unfolding mechanism and transfer them to the packing station.

[0012] A packing mechanism, located on the bottom frame, is used to pack materials into cartons.

[0013] The lifting mechanism is mounted on the top frame and located between the unfolding mechanism and the packing mechanism. The lifting mechanism has two states: the upper outer flap is folded and the carton is lifted. It also has a third air nozzle.

[0014] During the unfolding phase, the lifting mechanism uses a third air nozzle to attract the upper outer flap and drive it to rise and fall, thereby achieving the opening and closing of the upper outer flap.

[0015] The moving mechanism has a liftable support frame and a second air nozzle set on the support frame. After the carton is output from the unfolding mechanism, it is received by the support frame and the bottom is adsorbed by the second air nozzle.

[0016] During the transfer phase, the lifting mechanism uses the third air nozzle to absorb the top of the carton. The support frame and the third air nozzle form a support and absorption combination for the bottom and top of the same carton, respectively, transferring the carton from the output end of the unfolding mechanism to the input end of the packing mechanism.

[0017] The lifting mechanism drives the carton to descend vertically layer by layer during the packing stage.

[0018] Preferably, the paper feeding mechanism includes a base, a fixed tray, a movable tray, a rotating shaft rotatably mounted on the base, a synchronous pulley mounted on the rotating shaft, a synchronous belt wound around the synchronous pulley, and a driving component for intermittently rotating the rotating shaft.

[0019] The drive component converts reciprocating motion into unidirectional intermittent rotation of the rotating shaft through a one-way bearing.

[0020] The drive component includes a drive cylinder, a first rocker arm, and a one-way bearing.

[0021] Preferably, the paper feeding mechanism further includes a gravity moving unit disposed on the side wall of the base, the gravity moving unit including a sliding block, a first connecting rod, a first cross pusher, a guide wheel, a connecting rope and a counterweight.

[0022] The first cross pusher includes rods that are rotatably connected in a cross manner. The counterweight applies a constant tension to the sliding block through a connecting rope and a guide wheel, so that the first cross pusher continuously abuts against the side of the cardboard box.

[0023] Preferably, the material handling mechanism includes a first electric linear module, a fixed rod disposed at the sliding end of the first electric linear module, and a second cross-shaped pusher mounted on the fixed rod.

[0024] The second cross pusher consists of two cross-rotating rods that can be adjusted in terms of horizontal and vertical projection dimensions by rotating relative to each other around the intersection point. The second cross pusher is equipped with a first air nozzle for adsorbing paper boxes.

[0025] Preferably, the unfolding mechanism includes a first operating unit for opening the lower outer flap outward, a second operating unit for closing one side of the inner flap, a third operating unit for closing the other side of the inner flap, and a fourth operating unit for closing the lower outer flap.

[0026] The first operating unit includes a second electric linear module and a first push plate disposed at its moving end, the first push plate having an inclined bending portion.

[0027] The second operating unit includes a lifting cylinder, a support plate disposed at the telescopic end of the lifting cylinder, a second rocker arm hinged to one end of the support plate, and a push cylinder connected between the support plate and the second rocker arm. A roller is rotatably connected to the end of the second rocker arm.

[0028] The third operating unit includes a first connecting plate, a first drive motor disposed at the bottom of the first connecting plate, a third rocker arm disposed at the output end of the first drive motor, and an inner rocker cover push plate fixed to the end of the third rocker arm.

[0029] The fourth operating unit includes a third electric linear module, a movable plate disposed at the sliding end of the third electric linear module, a second drive motor fixed to the side wall of the movable plate, and a fourth rocker arm connected to the output end of the second drive motor. The end of the fourth rocker arm is fixed with a lower outer rocker cover closing push plate.

[0030] Preferably, the lifting mechanism includes a top horizontal electric moving module disposed on the top frame, a fixed plate disposed on the sliding end of the top horizontal electric moving module, a third lifting cylinder fixed on the fixed plate, and a connecting plate connected to the telescopic end of the third lifting cylinder. The third air nozzle is disposed at the bottom of the connecting plate, and the suction port of the third air nozzle faces downward, for adsorbing the top of the carton or the upper outer flap.

[0031] Preferably, the moving mechanism includes a lifting device, a horizontal moving device disposed at the moving end of the lifting device, and a support frame connected to the moving end of the horizontal moving device. The bottom of the support frame is provided with multiple strip grooves, round holes, and clearance holes. The second air nozzle is installed at the bottom of the support frame, with its suction port facing vertically upward and extending into the round hole. An electric push rod is fixed on one side of the support frame, and a limit push plate is fixed at the moving end of the electric push rod.

[0032] Preferably, a roller conveyor is provided at the bottom of the bottom frame. When the lifting device drives the support frame to move downward to the lowest position, the upper part of the roller of the roller conveyor is embedded in the strip groove.

[0033] The frame of the roller conveyor is equipped with a tilting unit. The tilting unit includes an L-shaped frame rotatably connected to both sides of the frame and a rotating cylinder that drives the L-shaped frame to swing. A second connecting rod is provided between the two L-shaped frames. The L-shaped frame is provided with a clearance groove for avoiding the roller.

[0034] Preferably, the packing mechanism includes a support frame, a belt conveyor mounted on the support frame, a material support unit for supporting the bottom of the material, and a material pusher unit for pushing the material into the carton.

[0035] The material support unit includes an L-shaped plate, a fourth electric moving module disposed on the L-shaped plate, and a material support plate connected to the sliding end of the fourth electric moving module.

[0036] The feeding unit includes a fifth electric moving module, an L-shaped connecting rod connected to the sliding end of the fifth electric moving module, and a material pusher plate fixed to the end of the L-shaped connecting rod.

[0037] The packing mechanism also includes a first lifting cylinder, a second lifting cylinder, and a material blocking unit respectively disposed on different sides of the material support unit; The first lifting cylinder has a first L-shaped baffle at its moving end, and the second lifting cylinder has a limit baffle at its moving end. The material blocking unit includes a sixth electric moving module, a seventh electric moving module, and a second L-shaped baffle.

[0038] This invention utilizes an intermittent drive mechanism comprised of a drive cylinder, a first rocker arm, and a one-way bearing. This mechanism converts the reciprocating extension and retraction motion of the drive cylinder into a unidirectional intermittent rotational motion of the rotating shaft. This allows the feeding unit to rotate a fixed angle and push a fixed number of cartons forward one step at a time, achieving precise synchronization between the feeding cycle and the opening cycle. This effectively avoids the problems of carton accumulation or empty opening stations caused by speed mismatches in continuous feeding methods. Simultaneously, the gravity-driven movement unit applies a constant pulling force to the sliding block via a counterweight, ensuring that the first cross-shaped pusher continuously presses against the side of the cartons. This effectively limits the cartons' movement in the width direction, ensuring precise forward movement along a straight line and preventing feeding jams or stacking problems caused by carton skew.

[0039] This invention utilizes a first operating unit of the unfolding mechanism and a third air nozzle of the lifting mechanism to first open the upper and lower outer flaps outward, creating unobstructed operating space for the folding of the inner flaps. After the second and third operating units close the inner flaps in place, the fourth operating unit and the lifting mechanism then close the outer flaps sequentially. The entire process is clearly sequenced and does not interfere with each other, fundamentally solving the problem of the outer flaps naturally falling and obstructing the folding path of the inner flaps in traditional methods, significantly improving the smoothness and yield of carton forming. Simultaneously, the second cross-shaped pusher of the material handling mechanism employs a structure of two cross-rotating rods. By adjusting the cross angle, the horizontal and vertical projection dimensions can be changed simultaneously, quickly adapting to different carton specifications without replacing any parts, effectively improving versatility and changeover efficiency.

[0040] This invention utilizes the support frame of the moving mechanism and the third air nozzle of the lifting mechanism to provide support and suction to the bottom and top of the same carton, respectively. This achieves smooth and automated transfer of the carton from the output end of the unfolding mechanism to the input end of the packing mechanism, preventing tilting or tipping during transport. The packing mechanism uses a first lifting cylinder, a second lifting cylinder, and a baffle unit to provide omnidirectional limiting and guidance for the material in the horizontal, vertical, and vertical directions, ensuring that the material is arranged in a neat queue before being pushed. This effectively solves the problem of materials easily rolling and shifting during transport due to their smooth surface and light weight. During the packing stage, the lifting mechanism drives the carton to descend vertically layer by layer, causing the opening height of the carton to decrease synchronously with the layered loading of material. This ensures that the pushing unit accurately delivers material into the carton opening each time it pushes it, achieving precise layered packing of stacked materials and improving the utilization rate of the carton's internal space. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the paper feeding box mechanism of the present invention; Figure 3 This is a schematic diagram of the drive component mounting structure of the present invention; Figure 4 This is a schematic diagram of the material handling mechanism of the present invention; Figure 5 This is a schematic diagram of the unfolding mechanism of the present invention; Figure 6 This is a schematic diagram of the third operation unit structure of the present invention; Figure 7 This is a schematic diagram of the fourth operation unit structure of the present invention; Figure 8 This is a schematic diagram of the installation structure of the moving mechanism of the present invention; Figure 9 This is a schematic diagram of the moving mechanism structure of the present invention; Figure 10 This is a schematic diagram of the packing mechanism of the present invention; Figure 11 This is a schematic diagram of the material support unit structure of the present invention.

[0042] In the picture: 1. Bottom frame; 11. Top frame; 12. Side passage; 13. Top passage; 2. Paper box feeding mechanism; 21. Base; 22. Fixed tray; 23. Movable tray; 24. Rotating shaft; 25. Synchronous pulley; 251. Synchronous belt; 26. Drive component; 261. Drive cylinder; 262. First rocker arm; 263. One-way bearing; 27. Gravity movement unit; 271. Sliding block; 272. First connecting rod; 273. First cross pusher frame; 274. Guide wheel; 275. Connecting rope; 276. Counterweight; 3. Material handling mechanism; 31. First electric linear module; 311. Fixing rod; 32. Second cross pusher; 33. First air nozzle; 4. Deployment mechanism; 41. First operating unit; 411. Second electric linear module; 412. First push plate; 42. Second operating unit; 421. Lifting cylinder; 422. Support plate; 423. Second rocker arm; 424. Roller; 425. Push cylinder; 43. Third operating unit; 431. First connecting plate; 432. First drive motor; 433. Third rocker arm; 434. Inner flap push plate; 44. Fourth operating unit; 441. Third electric linear module; 442. Moving plate; 443. Second drive motor; 444. Fourth rocker arm; 445. Lower outer flap closing push plate; 5. Moving mechanism; 51. Lifting device; 511. Horizontal moving device; 52. Support frame; 521. Strip groove; 522. Circular hole; 523. Clearance hole; 53. Second air nozzle; 54. Electric push rod; 55. Limiting push plate; 56. Roller conveyor; 57. Tilting unit; 571. L-shaped frame; 5711. Clearance groove; 572. Second connecting rod; 573. Rotary cylinder; 6. Packing mechanism; 61. Support frame; 62. Belt conveyor; 63. Material support unit; 631. L-shaped plate; 632. Fourth electric moving module; 633. Material support plate; 64. Pushing unit; 641. Fifth electric moving module; 642. L-shaped connecting rod; 643. Material pusher plate; 65. First lifting cylinder 651. First L-shaped baffle; 66. Second lifting cylinder; 661. Limit baffle; 67. Material blocking unit; 671. Sixth electric moving module; 672. Seventh electric moving module; 673. Second L-shaped baffle; 7. Lifting mechanism; 71. Top horizontal electric moving module; 72. Fixing plate; 73. Third lifting cylinder; 74. Third air nozzle. Detailed Implementation

[0043] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0044] Example: Figure 1-11 As shown, a carton opener includes a bottom frame 1 and a top frame 11 disposed on top of the bottom frame 1. The bottom frame 1 is a rectangular frame made of industrial aluminum profiles and is used to support all the mechanisms of the machine. The top frame 11 is fixedly supported above the bottom frame 1 by vertical columns and together with the bottom frame 1, forms an upper and lower installation space. A side passage 12 is provided on one side of the bottom frame 1, which runs horizontally through the machine for the horizontal passage and conveying of cartons or boxes. A top passage 13 is provided on the top frame 11, which runs along the length of the top frame 11 and is used for the movement and operation of some components of the material handling mechanism 3, the unfolding mechanism 4, and the lifting mechanism 7.

[0045] The bottom frame 1 and top frame 11 are equipped with a paper box feeding mechanism 2, a material picking mechanism 3, an unfolding mechanism 4, a moving mechanism 5, a box packing mechanism 6, and a lifting mechanism 7. Along the carton conveying direction, the paper box feeding mechanism 2, the moving mechanism 5, and the box packing mechanism 6 are sequentially arranged on the bottom frame 1; the material picking mechanism 3, the unfolding mechanism 4, and the lifting mechanism 7 are correspondingly arranged on the top frame 11. Each mechanism is centrally controlled by a PLC according to a preset program, and photoelectric sensors detect the position signals of the paper box and materials.

[0046] The paper box feeding mechanism 2 is located at one end of the bottom frame 1 and is used to convey the paper boxes to be formed forward. The paper box feeding mechanism 2 includes a base 21, a fixed tray 22, a movable tray 23, a rotating shaft 24 rotatably mounted on the base 21, a synchronous pulley 25 mounted on the rotating shaft 24, a synchronous belt 251 wound around the synchronous pulley 25, and a driving component 26 for intermittently rotating the rotating shaft 24. The base 21 is fixed to one end of the bottom frame 1, and the fixed tray 22 and the movable tray 23 are located on both sides of the base 21 to support stacked paper boxes. The movable tray 23 can slide and adjust its spacing relative to the fixed tray 22 to accommodate paper boxes of different widths. The rotating shaft 24 is rotatably mounted on the base 21, the synchronous pulley 25 is fixedly mounted on the rotating shaft 24, and the synchronous belt 251 is wound around the synchronous pulley 25. The upper surface of the synchronous belt 251 protrudes from the upper surfaces of the fixed tray 22 and the movable tray 23 to contact the bottom surface of the bottommost paper box.

[0047] The drive component 26 includes a drive cylinder 261, a first rocker arm 262, and a one-way bearing 263. The cylinder body of the drive cylinder 261 is hinged to the side plate of the base 21, and the piston rod is hinged to one end of the first rocker arm 262. The other end of the first rocker arm 262 is sleeved on the rotating shaft 24, and the one-way bearing 263 is embedded inside the first rocker arm 262. The inner ring of the one-way bearing 263 is interference-fitted with the rotating shaft 24, and the outer ring is fixedly connected to the first rocker arm 262. The permissible rotation direction of the one-way bearing 263 is consistent with the feeding direction.

[0048] During operation, the drive cylinder 261 reciprocates, causing the first rocker arm 262 to swing back and forth. When the first rocker arm 262 swings forward, the one-way bearing 263 locks, causing the rotating shaft 24 to rotate, which in turn pushes the carton forward one step distance via the synchronous pulley 25 and the synchronous belt 251. When the first rocker arm 262 swings in the opposite direction, the one-way bearing 263 unlocks, and the first rocker arm 262 idles relative to the rotating shaft 24, while the rotating shaft 24 does not rotate. Thus, the reciprocating motion of the drive cylinder 261 is converted into the unidirectional intermittent rotation of the rotating shaft 24, realizing intermittent feeding of the carton.

[0049] The paper box feeding mechanism 2 also includes a gravity moving unit 27 disposed on the side wall of the base 21. The gravity moving unit 27 includes a sliding block 271, a first connecting rod 272, a first cross pusher 273, a guide wheel 274, a connecting rope 275, and a counterweight 276. The sliding block 271 is slidably disposed on the side wall of the base 21. One end of the first connecting rod 272 is fixedly connected to the sliding block 271, and the other end is connected to the first cross pusher 273. The first cross pusher 273 includes rods that are rotatably connected to each other, which can adapt to changes in the position of the side of the paper box. The guide wheel 274 is rotatably disposed on the side wall of the base 21. One end of the connecting rope 275 is connected to the sliding block 271, and the other end passes over the guide wheel 274 and suspends the counterweight 276.

[0050] During operation, the counterweight 276 moves downwards under its own weight, applying a constant pulling force towards the cardboard box to the sliding block 271 via the connecting rope 275 and guide wheel 274. This keeps the first cross-shaped pusher 273 tending to move towards the side of the cardboard box and continuously pressing against it, applying an auxiliary clamping force. As the stacking height of the cardboard boxes changes, the first cross-shaped pusher 273 automatically adjusts its position under the pulling force of the counterweight 276.

[0051] The material handling mechanism 3 is mounted on the top frame 11 and is used to pick up and transfer the cardboard boxes to the unfolding station. The material handling mechanism 3 includes a first electric linear module 31, a fixed rod 311 disposed at the sliding end of the first electric linear module 31, and a second cross pusher 32 mounted on the fixed rod 311. The second cross pusher 32 is composed of two rods that are rotatably connected in a cross direction. The horizontal and vertical projection dimensions can be adjusted by rotating relative to each other around the intersection point. A first air nozzle 33 for picking up the cardboard boxes is mounted on the second cross pusher 32.

[0052] The first electric linear module 31 is horizontally fixed to the top frame 11 along the feeding direction, and its sliding end can reciprocate horizontally. A fixing rod 311 is fixed to the sliding end of the first electric linear module 31. The second cross-shaped pusher 32 is mounted on the fixing rod 311. By adjusting the intersection angle of the two rods, the projected dimensions of the second cross-shaped pusher 32 in the horizontal and vertical directions can be changed, thus adapting to different specifications of cardboard boxes. The first air nozzle 33 is connected to an external negative pressure air source for adsorbing the surface of the cardboard box. During operation, the first electric linear module 31 drives the second cross-shaped pusher 32 to move towards the cardboard box feeding mechanism 2, and the first air nozzle 33 generates negative pressure to adsorb the cardboard box onto the second cross-shaped pusher 32; subsequently, the first electric linear module 31 moves in the reverse direction, smoothly transferring the cardboard box to the unfolding station. Because the size of the second cross-shaped pusher 32 is adjustable, it can adapt to different specifications of cardboard boxes without replacing parts, improving versatility and changeover efficiency.

[0053] The unfolding mechanism 4 is mounted on the top frame 11 and is used to unfold the flaps of the carton sequentially. The unfolding mechanism 4 includes a first operating unit 41 for opening the lower outer flap outward, a second operating unit 42 for closing one side of the inner flap, a third operating unit 43 for closing the other side of the inner flap, and a fourth operating unit 44 for closing the lower outer flap.

[0054] The first operating unit 41 includes a second electric linear module 411 and a first push plate 412 disposed at its moving end. The first push plate 412 has an inclined bent portion. The second electric linear module 411 is horizontally fixed to the top frame 11, and the first push plate 412 is fixed to the moving end of the second electric linear module 411. During operation, the second electric linear module 411 drives the first push plate 412 to move horizontally. The bent portion of the first push plate 412 pushes down the outer flap from the inside, causing it to flip outward and open, creating unobstructed space for the subsequent closing of the inner flap.

[0055] The second operating unit 42 includes a lifting cylinder 421, a support plate 422 disposed at the telescopic end of the lifting cylinder 421, a second rocker arm 423 hinged to one end of the support plate 422, and a push cylinder 425 connected between the support plate 422 and the second rocker arm 423. A roller 424 is rotatably connected to the end of the second rocker arm 423. The cylinder body of the lifting cylinder 421 is vertically fixed to the top frame 11, and the piston rod extends vertically upward. The support plate 422 is horizontally disposed and its bottom is fixedly connected to the end of the piston rod of the lifting cylinder 421. One end of the second rocker arm 423 is hinged to one end of the support plate 422, and the free end is rotatably connected to the roller 424. The cylinder body of the push cylinder 425 is hinged to the support plate 422, and the end of the piston rod is hinged to the end of the second rocker arm 423. During operation, the lifting cylinder 421 drives the support plate 422 to rise to a suitable height, which in turn pushes the cylinder 425 to swing the second rocker arm 423, causing the roller 424 to roll and contact the inner side of the inner flap, pushing it flat and closing. Using roller contact effectively avoids scratches on the carton surface caused by rigid pushing.

[0056] The third operating unit 43 includes a first connecting plate 431, a first drive motor 432 disposed at the bottom of the first connecting plate 431, a third rocker arm 433 disposed at the output end of the first drive motor 432, and an inner rocker cover pusher plate 434 fixed to the end of the third rocker arm 433. The first connecting plate 431 is horizontally fixed to the top frame 11, the housing of the first drive motor 432 is fixed to the bottom of the first connecting plate 431, and the output shaft passes vertically upward through the first connecting plate 431; one end of the third rocker arm 433 is fixedly connected to the output shaft of the first drive motor 432, and the other end is fixed with the inner rocker cover pusher plate 434. During operation, the first drive motor 432 drives the inner rocker cover pusher plate 434 through the third rocker arm 433 to push the inner rocker cover on the other side flat and close from the outside.

[0057] The fourth operating unit 44 includes a third electric linear module 441, a movable plate 442 disposed at the sliding end of the third electric linear module 441, a second drive motor 443 fixed to the side wall of the movable plate 442, and a fourth rocker arm 444 connected to the output end of the second drive motor 443. A lower outer flap closing push plate 445 is fixed to the end of the fourth rocker arm 444. The third electric linear module 441 is horizontally fixed on the top frame 11, and its sliding end can reciprocate in the horizontal direction. The movable plate 442 is fixed to the sliding end of the third electric linear module 441. The housing of the second drive motor 443 is fixed to the side wall of the movable plate 442, and its output end is connected to the lower outer flap closing push plate 445 through the fourth rocker arm 444. During operation, the third electric linear module 441 adjusts the horizontal position of the movable plate 442, and the second drive motor 443 drives the lower outer flap closing push plate 445 through the fourth rocker arm 444 to push the lower outer flap flat and close.

[0058] The lifting mechanism 7 is also used to open and close the upper outer flap during the unfolding phase. The lifting mechanism 7 includes a top horizontal electric moving module 71 mounted on the top frame 11, a fixed plate 72 mounted on the sliding end of the top horizontal electric moving module 71, a third lifting cylinder 73 fixed to the fixed plate 72, and a connecting plate connected to the telescopic end of the third lifting cylinder 73. A third air nozzle 74 is located at the bottom of the connecting plate, with its suction port facing downwards, for suctioning the top of the carton or the upper outer flap. During the unfolding phase, the third lifting cylinder 73 drives the connecting plate downwards, and the third air nozzle 74, after suctioning the upper outer flap, rises, causing it to open outwards. During the closing phase, the third lifting cylinder 73 drives the connecting plate downwards, causing the upper outer flap to smoothly fold and close. Through the coordinated action of the above-mentioned operating units, the unfolding mechanism 4 first opens the upper and lower outer flaps outward, then closes the inner flaps on both sides in sequence, and finally closes the outer flaps. The entire action process is clear in sequence and does not interfere with each other, fundamentally solving the problem of the outer flaps naturally falling down and blocking the folding path of the inner flaps in the traditional method.

[0059] The moving mechanism 5 is mounted on the bottom frame 1 and is used to receive the cartons output from the unfolding mechanism 4 and transfer them to the packing station. The moving mechanism 5 includes a lifting device 51, a horizontal moving device 511 disposed at the moving end of the lifting device 51, and a support frame 52 connected to the moving end of the horizontal moving device 511. The bottom of the support frame 52 has multiple strip grooves 521, round holes 522, and clearance holes 523. A second air nozzle 53 is installed at the bottom of the support frame 52, with its suction port facing vertically upward and extending into the round hole 522. An electric push rod 54 is fixed to one side of the support frame 52, and a limit push plate 55 is fixed to the moving end of the electric push rod 54.

[0060] The lifting device 51 is vertically fixed to the bottom frame 1, and its moving end can reciprocate vertically. The horizontal moving device 511 is horizontally fixed to the moving end of the lifting device 51, and its moving end can reciprocate horizontally. The support frame 52 is fixedly connected to the moving end of the horizontal moving device 511, and is U-shaped, used to support the carton. The second air nozzle 53 is connected to a negative pressure air source, and its suction port faces vertically upward and passes through the round hole 522, used to suction the bottom of the carton. The electric push rod 54 is fixed to one side of the support frame 52, and its moving end is fixed with a limit push plate 55.

[0061] During operation, the lifting device 51 drives the support frame 52 to rise to the output end of the unfolding mechanism 4. After the carton is output from the unfolding mechanism 4, it is received by the support frame 52, and the second air nozzle 53 generates negative pressure to adsorb the bottom of the carton. Subsequently, the electric push rod 54 drives the limiting push plate 55 to move towards the carton, limiting and clamping the carton from the side to prevent the carton from shifting or shaking due to external vibration or inertial force during the transfer process, ensuring the stability and positioning accuracy of the carton's transfer posture. The horizontal moving device 511 drives the support frame 52 to move horizontally to above the packing station.

[0062] A roller conveyor 56 is also installed at the bottom of the bottom frame 1. When the lifting device 51 drives the support frame 52 to move downward to the lowest position, the upper part of the rollers of the roller conveyor 56 is embedded in the strip groove 521, so that the bottom of the carton can smoothly transition onto the roller conveyor 56. A flipping unit 57 is installed on the frame of the roller conveyor 56. The flipping unit 57 includes an L-shaped frame 571 rotatably connected to both sides of the frame and a rotating cylinder 573 that drives the L-shaped frame 571 to swing. A second connecting rod 572 is provided between the two L-shaped frames 571. The L-shaped frame 571 has a clearance groove 5711 for avoiding the roller. During operation, the rotating cylinder 573 drives the L-shaped frame 571 to swing around the rotation center. The second connecting rod 572 ensures that the two L-shaped frames 571 swing synchronously. The clearance groove 5711 avoids the roller, thereby flipping the carton from a vertical state to a horizontal state, realizing automatic adjustment of the carton's posture.

[0063] During the transfer phase, the lifting mechanism 7 uses the third air nozzle 74 to adsorb the top of the carton, and the moving mechanism 5 uses the second air nozzle 53 to adsorb the bottom of the carton. The two mechanisms work together to support the bottom and adsorb the top of the same carton, respectively, so as to smoothly transfer the carton from the output end of the unfolding mechanism 4 to the input end of the packing mechanism 6.

[0064] The packing mechanism 6 is mounted on the bottom frame 1 and is used to load materials into cartons. The packing mechanism 6 includes a support frame 61, a belt conveyor 62 mounted on the support frame 61, a material support unit 63 for supporting the bottom of the material, and a material pusher unit 64 for pushing the material into the carton. The packing mechanism 6 also includes a first lifting cylinder 65, a second lifting cylinder 66, and a material blocking unit 67 respectively mounted on different sides of the material support unit 63.

[0065] A support frame 61 is fixed to the bottom frame 1. A belt conveyor 62 is horizontally positioned above the support frame 61 for conveying materials to be boxed. The material support unit 63 includes an L-shaped plate 631, a fourth electric moving module 632 mounted on the L-shaped plate 631, and a material support plate 633 connected to the sliding end of the fourth electric moving module 632. The L-shaped plate 631 is fixed to the support frame 61 and located at the discharge end of the belt conveyor 62. The fourth electric moving module 632 is horizontally fixed to the inner bottom surface of the L-shaped plate 631, and its moving end can reciprocate in a direction perpendicular to the conveying direction of the belt conveyor 62. The material support plate 633 is horizontally positioned, and its bottom is fixedly connected to the moving end of the fourth electric moving module 632. Its upper surface is flush with the upper surface of the belt conveyor 62, and it is used to support the bottom of the material.

[0066] The pushing unit 64 includes a fifth electric moving module 641, an L-shaped connecting rod 642 connected to the sliding end of the fifth electric moving module 641, and a material pusher plate 643 fixed to the end of the L-shaped connecting rod 642. The fifth electric moving module 641 is horizontally fixed on the bottom frame 1 and located behind the belt conveyor 62. Its moving end can reciprocate along the conveying direction of the belt conveyor 62. The upper end of the vertical section of the L-shaped connecting rod 642 is fixed to the moving end of the fifth electric moving module 641, and the horizontal section extends forward to the top of the belt conveyor 62. The material pusher plate 643 is vertically fixed to the end of the horizontal section of the L-shaped connecting rod 642. During operation, the fifth electric moving module 641 drives the material pusher plate 643 to push the material on the belt conveyor 62 into the carton. The material support plate 633, driven by the fourth electric moving module 632, synchronously supports the bottom of the material to ensure that the material enters the carton smoothly.

[0067] The moving end of the first lifting cylinder 65 is equipped with a first L-shaped baffle 651, and the moving end of the second lifting cylinder 66 is equipped with a limit baffle 661. The material blocking unit 67 includes a sixth electric moving module 671, a seventh electric moving module 672, and a second L-shaped baffle 673. The first lifting cylinder 65, the second lifting cylinder 66, and the material blocking unit 67 are respectively located on different sides of the material supporting unit 63, providing omnidirectional limiting and guidance for the material in the horizontal, vertical, and height directions, ensuring that the material is arranged in a neat queue before being pushed, preventing jamming, scattering, or tipping due to material deviation. The height and position of each baffle can be flexibly adjusted by the corresponding lifting cylinder or electric moving module, enabling the device to adapt to different stacking heights, different specifications of materials, and different sizes of cartons.

[0068] During the packing stage, the third air nozzle 74 of the lifting mechanism 7 maintains adsorption on the top of the carton. Each time the packing mechanism 6 loads a layer of material, the third lifting cylinder 73 drives the connecting plate and the carton to descend by one layer height, so that the opening height of the carton decreases synchronously with the material being loaded layer by layer. This ensures that the material is accurately pushed into the carton from the opening each time the pushing unit 64 pushes the material, achieving precise layered packing of stacked materials and improving the utilization rate of the carton's internal space.

[0069] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A box opener, comprising a bottom frame (1) and a top frame (11) disposed on top of the bottom frame (1), wherein a side channel (12) is provided on one side of the bottom frame (1), and a top channel (13) is provided on the top frame (11), characterized in that, The bottom frame (1) and the top frame (11) are provided with: The paper box feeding mechanism (2) is located at one end of the bottom frame (1) and is used to convey the paper box to be formed forward. The material handling mechanism (3) is set on the top frame (11) and is used to pick up the paper box and transfer it to the unfolding station; An unfolding mechanism (4) is provided on the top frame (11) for unfolding the flaps of the carton sequentially; The moving mechanism (5) is set on the bottom frame (1) and is used to receive the carton output from the unfolding mechanism (4) and transfer it to the packing station; A packing mechanism (6) is provided on the bottom frame (1) for packing materials into cartons; The lifting mechanism (7) is set on the top frame (11) and located between the unfolding mechanism (4) and the packing mechanism (6). The lifting mechanism (7) has two states: the upper outer flap folding and the carton lifting. It also has a third air nozzle (74). The lifting mechanism (7) in the unfolding stage uses the third air nozzle (74) to adsorb the upper outer flap and drive it to rise and fall, so as to realize the opening and closing of the upper outer flap; The moving mechanism (5) has a liftable support frame (52) and a second air nozzle (53) set on the support frame (52). After the carton is output from the unfolding mechanism (4), it is received by the support frame (52) and the bottom is adsorbed by the second air nozzle (53). During the transfer phase, the lifting mechanism (7) adsorbs the top of the carton through the third air nozzle (74). The support frame (52) and the third air nozzle (74) form a support and adsorption combination on the bottom and top of the same carton respectively, and transfer the carton from the output end of the unfolding mechanism (4) to the input end of the packing mechanism (6). The lifting mechanism (7) drives the carton to descend vertically layer by layer during the packing stage.

2. The case opener according to claim 1, characterized in that: The paper feeding mechanism (2) includes a base (21), a fixed tray (22), a movable tray (23), a rotating shaft (24) rotatably mounted on the base (21), a synchronous pulley (25) mounted on the rotating shaft (24), a synchronous belt (251) wound around the synchronous pulley (25), and a driving member (26) for intermittently rotating the rotating shaft (24). The drive component (26) converts the reciprocating motion into the unidirectional intermittent rotation of the rotating shaft (24) through a one-way bearing (263); The drive unit (26) includes a drive cylinder (261), a first rocker arm (262), and a one-way bearing (263).

3. The case opener according to claim 2, characterized in that: The paper feeding mechanism (2) further includes a gravity moving unit (27) disposed on the side wall of the base (21). The gravity moving unit (27) includes a sliding block (271), a first connecting rod (272), a first cross pusher (273), a guide wheel (274), a connecting rope (275), and a counterweight (276). The first cross pusher (273) includes push rods that are rotatably connected in a cross manner. The counterweight (276) applies a constant tension to the sliding block (271) through the connecting rope (275) and the guide wheel (274), so that the first cross pusher (273) continuously abuts against the side of the cardboard box.

4. A case opener according to claim 1, characterized in that: The material handling mechanism (3) includes a first electric linear module (31), a fixed rod (311) disposed at the sliding end of the first electric linear module (31), and a second cross pusher (32) mounted on the fixed rod (311). The second cross pusher (32) consists of two push rods that are rotatably connected in a cross direction. The projection dimensions of the horizontal and vertical directions can be adjusted by rotating relative to each other around the intersection point. The second cross pusher (32) is equipped with a first air nozzle (33) for adsorbing paper boxes.

5. A case opener according to claim 1, characterized in that: The unfolding mechanism (4) includes a first operating unit (41) for opening the lower outer flap outward, a second operating unit (42) for closing one side of the inner flap, a third operating unit (43) for closing the other side of the inner flap, and a fourth operating unit (44) for closing the lower outer flap. The first operating unit (41) includes a second electric linear module (411) and a first push plate (412) disposed at its moving end, the first push plate (412) having an inclined bending portion; The second operating unit (42) includes a lifting cylinder (421), a support plate (422) disposed at the telescopic end of the lifting cylinder (421), a second rocker arm (423) hinged to one end of the support plate (422), and a push cylinder (425) connected between the support plate (422) and the second rocker arm (423). A roller (424) is rotatably connected to the end of the second rocker arm (423). The third operating unit (43) includes a first connecting plate (431), a first drive motor (432) disposed at the bottom of the first connecting plate (431), a third rocker arm (433) disposed at the output end of the first drive motor (432), and an inner rocker cover push plate (434) fixed to the end of the third rocker arm (433). The fourth operating unit (44) includes a third electric linear module (441), a movable plate (442) disposed at the sliding end of the third electric linear module (441), a second drive motor (443) fixed to the side wall of the movable plate (442), and a fourth rocker arm (444) connected to the output end of the second drive motor (443). The lower outer rocker cover closing push plate (445) is fixed at the end of the fourth rocker arm (444).

6. A case opener according to claim 1, characterized in that: The lifting mechanism (7) includes a top horizontal electric moving module (71) set on the top frame (11), a fixing plate (72) set on the sliding end of the top horizontal electric moving module (71), a third lifting cylinder (73) fixed on the fixing plate (72), and a connecting plate connected to the telescopic end of the third lifting cylinder (73). The third air nozzle (74) is set at the bottom of the connecting plate, and the suction port of the third air nozzle (74) faces downward, for adsorbing the top of the carton or the upper outer flap.

7. A case opener according to claim 1, characterized in that: The moving mechanism (5) includes a lifting device (51), a horizontal moving device (511) disposed at the moving end of the lifting device (51), and a support frame (52) connected to the moving end of the horizontal moving device (511). The bottom of the support frame (52) is provided with multiple strip grooves (521), round holes (522) and clearance holes (523). The second air nozzle (53) is installed at the bottom of the support frame (52), with its suction port facing vertically upward and extending into the round hole (522). An electric push rod (54) is fixed on one side of the support frame (52), and a limit push plate (55) is fixed at the moving end of the electric push rod (54).

8. A case opener according to claim 7, characterized in that: The bottom frame (1) is provided with a roller conveyor (56). When the lifting device (51) drives the support frame (52) to move downward to the lowest position, the upper part of the roller of the roller conveyor (56) is embedded in the strip groove (521). The roller conveyor (56) is provided with a flipping unit (57) on its frame. The flipping unit (57) includes an L-shaped frame (571) rotatably connected to both sides of the frame and a rotating cylinder (573) that drives the L-shaped frame (571) to swing. A second connecting rod (572) is provided between the two L-shaped frames (571). The L-shaped frame (571) is provided with a clearance groove (5711) for avoiding the roller.

9. A case opener according to claim 1, characterized in that: The packing mechanism (6) includes a support frame (61), a belt conveyor (62) mounted on the support frame (61), a material support unit (63) for supporting the bottom of the material, and a material pusher unit (64) for pushing the material into the carton. The material support unit (63) includes an L-shaped plate (631), a fourth electric moving module (632) disposed on the L-shaped plate (631), and a material support plate (633) connected to the sliding end of the fourth electric moving module (632). The feeding unit (64) includes a fifth electric moving module (641), an L-shaped connecting rod (642) connected to the sliding end of the fifth electric moving module (641), and a material pusher plate (643) fixed to the end of the L-shaped connecting rod (642). The packing mechanism (6) further includes a first lifting cylinder (65), a second lifting cylinder (66), and a baffle unit (67) respectively disposed on different sides of the material support unit (63). The first lifting cylinder (65) has a first L-shaped baffle (651) at its moving end, and the second lifting cylinder (66) has a limit baffle (661) at its moving end. The material blocking unit (67) includes a sixth electric moving module (671), a seventh electric moving module (672), and a second L-shaped baffle (673).

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