Packaging carton unfolding device

Abstract

The present invention provides a packaging carton unfolding device, which relates to the technical field of packaging carton. A packaging carton unfolding device comprises: a frame; a limit plate, the limit plate is slidably connected with a material stop plate for storing carton, the material stop plate is slidably connected with a measuring rod, the side wall of the frame is fixedly connected with a first rotation source, when the measuring rod moves to the crease, the first rotation source stops running; a transmission mechanism, which is used to drive the measuring rod to move along the length direction of the carton under the drive of the first rotation source; the driving shaft of the first rotation source is fixedly sleeved with a driving gear, the frame is hinged with a rotating rod, the frame is hinged with a first linear driver for driving the rotating rod to flip upward, the rotating rod is slidably connected with a transmission rack that can mesh with the driving gear, the transmission rack extends out of one end of the rotating rod and is fixedly connected with a transmission rod, and the transmission rod is fixedly connected with an unfolding suction cup for adsorbing the carton. The present invention has the effect of improving the unfolding efficiency of cartons of different specifications.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging cartons, and in particular to a packaging carton unfolding device. Background Art

[0002] Cartons are a common packaging material used for packaging, transporting and storing goods. Cartons are usually made of cardboard or corrugated cardboard, and are lightweight, strong and recyclable. During the production process of cartons, the pre-cut cardboard needs to be laid flat on the workbench, bent along the reserved folding lines, folded in half along the folding lines and flattened with fingers or tools. The unfolding of a carton refers to the process of unfolding a folded carton into a box body.

[0003] For example, the Chinese patent with the announcement number CN114212317B, which is named a carton opening machine, places the folded carton in the storage trough above the frame, and the carton is sent to the discharge port under the action of gravity. Under the action of the baffles on both sides of the storage trough and the shaping plate above, the folded carton can be neatly arranged at the discharge port end of the storage trough. The motor drives the crank connecting rod mechanism to move, and then drives the suction cup to make periodic rotational motion. When the suction cup reaches the discharge port of the storage trough, it can suck the surface of the carton. The suction cup drives the sucked carton to move, and the carton is placed and fixed at the designated station. The lifting shaping part of the shaping mechanism rises below the station to shape and open the carton.

[0004] For the above related technologies, refer to Figure 1 When the carton is flattened and folded, the top and bottom walls of the carton have creases. The shaping piece pushes the carton on the right side of the crease upward, and the carton on the right side of the crease turns counterclockwise 90 degrees to unfold. Due to the different specifications of different carton lengths and the difficulty in adjusting the distance of the shaping piece relative to the edge of the carton, when the length of the carton is too small, the shaping piece is located on the left side of the crease, and then the shaping piece pushes the carton on the left side of the crease to turn over. At this time, it is difficult to unfold the carton, and the carton will be bent and damaged, which has a negative impact on the unfolding work of the carton. Summary of the invention

[0005] In view of this, the present invention provides a packaging carton unfolding device, which aims to solve the problem that for cartons of different lengths, the distance between the shaping piece and the edge of the carton is difficult to adjust, which may cause the carton to be bent and damaged.

[0006] In order to solve the above technical problems, the present invention provides a packaging carton unfolding device, including: a frame; a limit plate, which is slidably arranged on the top wall of the frame, the limit plate is slidably connected to a material abutment plate for storing cartons, the material abutment plate is slidably connected to a measuring rod, and the side wall of the frame is fixedly connected to a first rotation source; a transmission mechanism is arranged on the side wall of the frame, and is used to drive the measuring rod to move along the length direction of the carton under the drive of the first rotation source; a driving shaft fixed sleeve of the first rotation source is provided with a driving gear, the frame is hinged with a rotating rod, the frame is hinged with a first linear drive for driving the rotating rod to flip upward, the rotating rod is slidably connected to a transmission rack that can mesh with the driving gear, the transmission rack is fixedly connected to a first transmission rod, and the first transmission rod is fixedly connected to an unfolding suction cup for adsorbing the carton.

[0007] By adopting the above technical solution, while the first rotating source drives the measuring rod to measure the distance between the crease and the edge of the carton, the first rotating source drives the unfolding suction cup to move along the length direction of the carton, and the moving distance of the unfolding suction cup is equal to the moving distance of the measuring rod, so that the unfolding suction cup can adaptively adjust its position according to different length specifications of the carton, so that the unfolding suction cup is located above the carton on the side of the crease close to the limit plate, and the position of the unfolding suction cup relative to the crease remains unchanged, so that the unfolding suction cup can unfold cartons of different specifications, while improving the efficiency of unfolding the cartons.

[0008] Optionally, the transmission mechanism includes a first pulley fixedly sleeved on the driving shaft of the first rotation source, a second pulley rotatably connected to the side wall of the frame, the first pulley and the second pulley sleeves are provided with a first conveyor belt, the second pulley is slidably connected to a second transmission rod, the second transmission rod is fixedly sleeved with a third pulley at one end away from the second pulley, the limiting plate is rotatably connected to a fourth pulley near the material stop plate, the third pulley and the fourth pulley sleeves are provided with a second conveyor belt, the material stop plate is provided with a fifth pulley at one end away from the fourth pulley, the fourth pulley and the fifth pulley sleeves are provided with a third conveyor belt, and the third conveyor belt is fixedly connected to the measuring rod.

[0009] Optionally, two limit plates are provided, and the carton is laid flat between the two limit plates. The lower end of the frame is fixedly connected to a second rotation source, and a driving shaft fixed sleeve of the second rotation source is provided with a transmission gear. The frame is rotatably connected to a driven gear that can mesh with the transmission gear, and the driven gear is fixedly connected to a bidirectional screw rod, and both ends of the bidirectional screw rod are respectively threadedly connected to one of the limit plates.

[0010] By adopting the above technical solution, the limit plate moves in the direction perpendicular to the thickness of the limit plate to adjust the position of the carton, so that the unfolding suction cup and the conveying suction cup can be aligned with the carton at the feeding mechanism, thereby improving the reliability of the unfolding suction cup and the conveying suction cup in achieving the function of adsorbing the carton.

[0011] Optionally, a second linear driver is fixedly connected to the side wall of the limiting plate, and the second linear driver is used to drive the material-blocking plate to move along the thickness direction of the limiting plate.

[0012] Optionally, a feeding mechanism is provided on the limiting plate, and the feeding mechanism is used to receive cartons and transport the cartons one by one to the unfolding suction cup.

[0013] By adopting the above technical solution, the feeding mechanism enables the unfolding suction cup to receive and unfold the cartons one by one, thereby improving the orderliness of the unfolding of the cartons.

[0014] Optionally, the side wall of the limit plate is fixedly connected to a third linear actuator, the driving shaft of the third linear actuator is hinged with a connecting rod, the connecting rod is fixedly connected to a driven rod, the side wall of the driven rod is fixedly connected to a material stop block for storing cartons, the inner side wall of the limit plate is provided with a baffle plate for limiting the movement of cartons above the bottom layer, the frame is fixedly connected to a conveying rack, the frame is slidably connected to a conveying plate for receiving the cartons on the material stop block, the conveying plate is fixedly connected to a third rotation source, the driving shaft of the third rotation source is fixedly sleeved with a conveying gear that can mesh with the conveying rack, and the top wall of the conveying plate is fixedly connected to a conveying suction cup.

[0015] By adopting the above technical solution, after the conveying suction cup conveys the carton to the bottom of the unfolding suction cup, when the unfolding suction cup absorbs the top wall of the carton to unfold the carton, the conveying suction cup continues to absorb the bottom wall of the carton, so that the conveying suction cup can not only convey the carton to the unfolding suction cup, but also fix the bottom wall of the carton when the top wall of the carton is flipped upward, thereby improving the reliability of the unfolding suction cup's function of flipping and unfolding the carton.

[0016] Optionally, the material baffle plate and the limiting plate are slidably connected, and the limiting plate is fixedly connected with a fourth linear actuator for driving the material baffle plate to move in a vertical direction.

[0017] By adopting the above technical solution, the fourth linear drive drives the limit plate to move, adjusts the distance between the baffle plate and the top wall of the frame, so that the distance between the baffle plate and the top wall of the frame is greater than the thickness of a carton and less than the thickness of two cartons, so that when the thickness of the cartons is different, the conveying suction cup can convey one carton to the unfolding suction cup each time.

[0018] Optionally, the frame is fixedly connected with a guide rod, and the two limit plates are slidably connected to the guide rod.

[0019] In summary, compared with the prior art, the present invention includes at least one of the following beneficial technical effects:

[0020] 1. While the first rotating source drives the measuring rod to measure the distance between the crease and the edge of the carton, the first rotating source drives the unfolding suction cup to move along the length direction of the carton, and the moving distance of the unfolding suction cup is equal to the moving distance of the measuring rod, so that the unfolding suction cup can be adaptively adjusted according to the different length specifications of the carton, so that the unfolding suction cup is located above the carton on the side of the crease close to the limit plate, and the position of the unfolding suction cup relative to the crease remains unchanged, so that the unfolding suction cup can unfold cartons of different specifications, while improving the efficiency of unfolding the carton.

[0021] 2. After the conveying suction cup conveys the carton to the bottom of the unfolding suction cup, when the unfolding suction cup absorbs the top wall of the carton to unfold the carton, the conveying suction cup continues to absorb the bottom wall of the carton, so that the conveying suction cup can not only convey the carton to the unfolding suction cup, but also fix the bottom wall of the carton when the top wall of the carton is flipped upward, thereby improving the reliability of the unfolding suction cup's function of flipping and unfolding the carton. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the carton;

[0023] Figure 2 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0024] Figure 3 A schematic diagram of a material stopper plate and a measuring rod according to an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of the expansion suction cup and the conveying suction cup according to an embodiment of the present invention;

[0026] Figure 5 It is a schematic structural diagram of a rotating rod and a transmission rack according to an embodiment of the present invention;

[0027] Figure 6 It is a structural schematic diagram of a transmission mechanism according to an embodiment of the present invention;

[0028] Figure 7 It is a structural schematic diagram of a feeding mechanism according to an embodiment of the present invention;

[0029] Figure 8 It is a schematic diagram of the structure of the transmission gear and the driven gear according to an embodiment of the present invention.

[0030] Explanation of the reference numerals: 1, frame; 11, guide rod; 2, limit plate; 21, material stop plate; 211, sliding groove; 22, measuring rod; 3, first rotation source; 31, driving gear; 32, rotating rod; 33, first linear drive; 34, transmission rack; 35, first transmission rod; 36, unfolding suction cup; 4, transmission mechanism; 41, first pulley; 42, second pulley; 43, first conveyor belt; 44, second transmission rod; 45, third pulley; 46, fourth pulley; 47, second transmission Conveyor belt; 48, fifth pulley; 49, third conveyor belt; 5, second rotation source; 51, transmission gear; 52, driven gear; 53, bidirectional screw; 6, second linear drive; 7, loading mechanism; 71, third linear drive; 72, connecting rod; 73, driven rod; 74, material block; 75, material baffle plate; 76, conveying rack; 77, conveying plate; 78, third rotation source; 781, conveying gear; 79, conveying suction cup; 8, fourth linear drive; 9, carton; 91, crease. DETAILED DESCRIPTION

[0031] To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will be combined with the embodiments of the present invention. Figure 1-Figure 8 , the technical scheme of the embodiment of the present invention is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0032] This embodiment provides a packaging carton unfolding device, referring to Figure 2 and Figure 3 A packaging carton unfolding device includes a frame 1, a limit plate 2 is slidably provided on the top wall of the frame 1, the limit plate 2 is slidably connected to a material stopper 21 for storing a carton 9 to be measured, a sliding groove 211 is provided on the top wall of the material stopper 21, a measuring rod 22 is slidably provided in the sliding groove 211, and specifically, the measuring rod 22 is a distance sensor. A first rotating source 3 is fixedly connected to the side wall of the frame 1, and when the measuring rod 22 moves to the fold 91, the first rotating source 3 stops running.

[0033] Reference Figure 2 , Figure 4 and Figure 5, the side wall of the frame 1 is provided with a transmission mechanism 4, which is used to drive the measuring rod 22 to move along the length direction of the carton 9 under the drive of the first rotation source 3. The driving shaft of the first rotation source 3 is fixedly sleeved with a driving gear 31, and the frame 1 is hinged with a rotating rod 32, and the frame 1 is hinged with a first linear driver 33 for driving the rotating rod 32 to flip upward. The rotating rod 32 is axially slidably connected to a transmission rack 34 that can mesh with the driving gear 31, and the transmission rack 34 extends out of the rotating rod 32. One end is fixedly connected to the first transmission rod 35, and the first transmission rod 35 is fixedly connected to an unfolding suction cup 36 for adsorbing the top wall of the carton 9. The carton 9 to be unfolded is laid flat on the top of the frame 1, and the carton 9 is located below the unfolding suction cup 36. The initial position of the unfolding suction cup 36 is on the side of the carton 9 close to the limit plate 2. Preferably, the distance between the unfolding suction cup 36 and the side wall of the carton 9 in the horizontal direction is 10 cm. When the first rotation source 3 stops running, the measuring rod 22 and the first transmission rod 35 move the same distance.

[0034] The carton 9 is laid flat on the abutment plate 21, and the measuring rod 22 is located just below the edge of the carton 9. The first rotating source 3 is started to drive the measuring rod 22 to move along the length direction of the carton 9 through the transmission mechanism 4. While the measuring rod 22 moves, the distance between the measuring rod 22 and the bottom wall of the carton 9 is measured until the measuring rod 22 moves to the fold 91 of the carton 9. The distance between the bottom wall of the carton 9 and the measuring rod 22 changes, and the measuring rod 22 receives the signal and feeds it back to the first rotating source 3, causing the first rotating source 3 to stop running.

[0035] While the first rotating source 3 drives the measuring rod 22 to move, the first rotating source 3 drives the transmission rack 34 to move along the length direction of the carton 9 through the driving gear 31, and the transmission rack 34 drives the unfolding suction cup 36 to move synchronously through the first transmission rod 35 until the first rotating source 3 stops running. At this time, the unfolding suction cup 36 and the measuring rod 22 move the same distance, and the unfolding suction cup 36 moves to the top of the carton 9 on the side of the fold 91 close to the limit plate 2. Preferably, the distance between the unfolding suction cup 36 and the fold 91 is 10 cm. The unfolding suction cup 36 absorbs the top wall of the carton 9, and the first linear drive 33 drives the rotating rod 32 to rotate clockwise (refer to Figure 4 ), the rotating rod 32 drives the unfolding suction cup 36 to rotate 90 degrees through the transmission rack 34 and the first transmission rod 35, so that the unfolding suction cup 36 unfolds the carton 9.

[0036] While the first rotating source 3 drives the measuring rod 22 to measure the distance between the crease 91 and the edge of the carton 9, the first rotating source 3 drives the unfolding suction cup 36 to move along the length direction of the carton 9, and the moving distance of the unfolding suction cup 36 is equal to the moving distance of the measuring rod 22, so that the unfolding suction cup 36 can adaptively adjust its position according to the different length specifications of the carton 9, so that the unfolding suction cup 36 is located above the carton 9 on the side of the crease 91 close to the limiting plate 2, and the position of the unfolding suction cup 36 relative to the crease 91 remains unchanged, so that the unfolding suction cup 36 can unfold cartons 9 of different specifications, while improving the efficiency of unfolding the cartons 9.

[0037] Reference Figure 2 and Figure 6 The transmission mechanism 4 includes a first pulley 41, a second pulley 42, a first conveyor belt 43, a second transmission rod 44, a third pulley 45, a fourth pulley 46, a second conveyor belt 47, a fifth pulley 48 and a third conveyor belt 49. The first pulley 41 is fixedly sleeved on the driving shaft of the first rotation source 3, the second pulley 42 is rotatably connected to the side wall of the frame 1, the first conveyor belt 43 is sleeved on the outer side wall of the first pulley 41 and the second pulley 42, the second pulley 42 is slidably sleeved on the second transmission rod 44, and the third pulley 45 is fixedly sleeved on the end of the second transmission rod 44 away from the second pulley 42. The fourth pulley 46 and the fifth pulley 48 are arranged on both sides of the material stopper plate 21, the second conveyor belt 47 is sleeved on the outer side wall of the third pulley 45 and the fourth pulley 46, and the third conveyor belt 49 is sleeved on the outer side wall of the fourth pulley 46 and the fifth pulley 48. The third conveyor belt 49 is fixedly connected to the measuring rod 22.

[0038] The diameters of the first pulley 41, the second pulley 42, the third pulley 45, the fourth pulley 46 and the fifth pulley 48 are all equal, so that the transmission ratio of two adjacent pulleys is 1:1, and the diameter of the first pulley 41 is equal to the pitch circle diameter of the transmission gear 51, so that when the first transmission source is started, the distances moved by the measuring rod 22 and the unfolding suction cup 36 are equal. The first rotating source 3 drives the measuring rod 22 to move along the length direction of the carton 9 through the first pulley 41, the first conveyor belt 43, the second pulley 42, the second transmission rod 44, the third pulley 45, the second conveyor belt 47, the fourth pulley 46 and the third conveyor belt 49 in sequence.

[0039] Reference Figure 2 and Figure 3, two limit plates 2 are provided, and the side wall of the limit plate 2 is fixedly connected with a second linear actuator 6, which is used to drive the material stopper 21 to move along the thickness direction of the limit plate 2. The second linear actuator 6 drives the material stopper 21 to move between the two limit plates 2, and the measuring rod 22 moves synchronously with the material stopper 21, so that the carton 9 is placed on the material stopper 21, so that the measuring rod 22 can measure the carton 9 on the material stopper 21. After the detection is completed, the second linear actuator 6 drives the material stopper 21 to move outside the limit plate 2.

[0040] Reference Figure 7 The limiting plate 2 is provided with a feeding mechanism 7, which is used to receive the cartons 9 and transport the cartons 9 one by one to the unfolding suction cup 36. As a result, the unfolding suction cup 36 receives the cartons 9 one by one and unfolds them, which improves the orderliness of the unfolding of the cartons 9.

[0041] Reference Figure 4 and Figure 7 The side wall of the limiting plate 2 is fixedly connected with a third linear actuator 71, the driving shaft of the third linear actuator 71 is hinged with a connecting rod 72, the connecting rod 72 is fixedly connected with a driven rod 73 at one end away from the third linear actuator 71, and the side wall of the driven rod 73 is fixedly connected with a stop block 74 for storing cartons 9, the stop block 74 extends into between the two limiting plates 2 at one end away from the driven rod 73, and the stop block 74 rotates around the driven rod 73 to transport the carton 9 downward. The inner wall of the limiting plate 2 is provided with a baffle plate 75 for limiting the movement of the carton 9 located above the bottom layer. The frame 1 is fixedly connected with a conveying rack 76. The frame 1 is slidably connected with a conveying plate 77 for receiving the carton 9 on the supporting block 74. The conveying plate 77 is fixedly connected with a third rotation source 78. The driving shaft of the third rotation source 78 is fixedly sleeved with a conveying gear 781 that can mesh with the conveying rack 76. The top wall of the conveying plate 77 is fixedly connected with a conveying suction cup 79, and the conveying suction cup 79 is used to adsorb the bottom wall of the carton 9.

[0042] The carton 9 to be unfolded is placed on the material stopper 74, and the driving shaft of the third linear actuator 71 moves upward, thereby driving the connecting rod 72 to rotate counterclockwise (refer to Figure 7 ), the connecting rod 72 drives the material stopper 74 to rotate through the driven rod 73, so that the edge of the material stopper 74 moves to the outside of the limiting plate 2, the material stopper 74 is separated from the carton 9, and the carton 9 falls to the conveying plate 77. The conveying suction cup 79 of the conveying plate 77 adsorbs the bottom wall of the lowest carton 9, and the third rotation source 78 drives the conveying gear 781 to rotate, and the conveying gear 781 drives the conveying plate 77 to move along the conveying rack 76 close to the unfolding suction cup 36. When the conveying suction cup 79 drives the carton 9 to move, the baffle plate 75 limits the movement of the carton 9 above the lowest carton 9, so that the conveying suction cup 79 only conveys the lowest carton 9 to the unfolding suction cup 36, and the function of the feeding mechanism 7 to convey the cartons 9 to the unfolding suction cup 36 one by one is realized.

[0043] After the conveying suction cup 79 conveys the carton 9 to the bottom of the unfolding suction cup 36, when the unfolding suction cup 36 absorbs the top wall of the carton 9 to unfold the carton 9, the conveying suction cup 79 continues to absorb the bottom wall of the carton 9, so that the conveying suction cup 79 can both convey the carton 9 to the unfolding suction cup 36 and fix the bottom wall of the carton 9 when the top wall of the carton 9 is flipped upward, thereby improving the reliability of the unfolding suction cup 36 to flip and unfold the carton 9.

[0044] Reference Figure 8 The carton 9 is laid flat between the two limit plates 2. The lower end of the frame 1 is fixedly connected to the second rotation source 5. The driving shaft of the second rotation source 5 is fixedly sleeved with a transmission gear 51. The frame 1 is rotatably connected to a driven gear 52 that can mesh with the transmission gear 51. The driven gear 52 is fixedly connected to a bidirectional screw rod 53. The two ends of the bidirectional screw rod 53 are respectively threadedly connected to a limit plate 2.

[0045] The second rotation source 5 rotates forwardly through the transmission gear 51 to drive the driven gear 52 to rotate, and the bidirectional screw rod 53 rotates synchronously with the driven gear 52, thereby driving the two limit plates 2 to move away from each other, and the second rotation source 5 reverses to drive the two limit plates 2 to move closer to each other, thereby adjusting the distance between the two limit plates 2 according to cartons 9 of different sizes, thereby adjusting the position of the carton 9 along the thickness direction of the limit plates 2, so that the unfolding suction cup 36 and the conveying suction cup 79 can be aligned with the carton 9 at the feeding mechanism 7, thereby improving the reliability of the unfolding suction cup 36 and the conveying suction cup 79 in achieving the function of adsorbing the carton 9.

[0046] Reference Figure 2 The baffle plate 75 is slidably connected to the limiting plate 2, and the limiting plate 2 is fixedly connected to a fourth linear actuator 8 for driving the baffle plate 75 to move in the vertical direction. When cartons 9 of different thicknesses need to be unfolded, the fourth linear actuator 8 drives the limiting plate 2 to move, and adjusts the distance between the baffle plate 75 and the top wall of the frame 1, so that the distance between the baffle plate 75 and the top wall of the frame 1 is greater than the thickness of one carton 9 and less than the thickness of two carton 9, so that the conveying suction cup 79 can only convey one carton 9 to the unfolding suction cup 36 at a time.

[0047] Reference Figure 2 and Figure 8 The frame 1 is fixedly connected with a guide rod 11, and both of the two limit plates 2 are slidably connected with the guide rod 11. The guide rod 11 can improve the accuracy of the moving direction of the limit plate 2 and the stability of the movement of the limit plate 2.

[0048] The implementation principle of the packaging carton unfolding device of the embodiment of the present invention is as follows: the carton 9 to be unfolded is placed on the material stopper 74, the material stopper 74 rotates and separates from the carton 9, and the carton 9 falls to the conveying plate 77. The conveying suction cup 79 of the conveying plate 77 absorbs the bottom wall of the carton 9 at the bottom, and moves the carton 9 along the conveying rack 76 close to the unfolding suction cup 36.

[0049] The carton 9 to be measured is laid flat on the material support plate 21, and the measuring rod 22 moves along the length direction of the carton 9. The measuring rod 22 measures the distance between itself and the carton 9 when it moves, until the measuring rod 22 moves to the fold 91 of the carton 9. The distance between the carton 9 and the measuring rod 22 changes, and the measuring rod 22 receives the signal and feeds it back to the first rotating source 3, causing the first rotating source 3 to stop running.

[0050] At the same time, the unfolding suction cup 36 moves synchronously along the carton 9 transported to the bottom of the unfolding suction cup 36, the unfolding suction cup 36 and the measuring rod 22 move the same distance, the unfolding suction cup 36 moves to the top of the carton 9 on the side of the crease 91 close to the limit plate 2, the unfolding suction cup 36 adsorbs the top wall of the carton 9, the first linear drive 33 drives the rotating rod 32 to rotate, and the rotating rod 32 drives the unfolding suction cup 36 to rotate 90 degrees, so that the unfolding suction cup 36 unfolds the carton 9.

[0051] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] The above are preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A packaging carton unfolding device, comprising a frame, characterized in that: Also includes: A limit plate is slidably arranged on the top wall of the frame, the limit plate is slidably connected to a material stopper plate for storing cartons, the material stopper plate is slidably connected to a measuring rod, and a first rotation source is fixedly connected to a side wall of the frame; A transmission mechanism, arranged on the side wall of the frame, for driving the measuring rod to move along the length direction of the carton under the drive of the first rotation source; The driving shaft fixing sleeve of the first rotating source is provided with a driving gear, the frame is hinged with a rotating rod, the frame is hinged with a first linear actuator for driving the rotating rod to flip upward, the rotating rod is slidably connected with a transmission rack that can mesh with the driving gear, the transmission rack is fixedly connected with a first transmission rod, and the first transmission rod is fixedly connected with an unfolding suction cup for adsorbing the carton; The transmission mechanism includes a first pulley fixedly sleeved on the driving shaft of the first rotation source, a second pulley rotatably connected to the side wall of the frame, the first pulley and the second pulley sleeves are provided with a first conveyor belt, the second pulley is slidably connected to a second transmission rod, the second transmission rod is fixedly sleeved with a third pulley at one end away from the second pulley, the limiting plate is rotatably connected to the fourth pulley near the material stop plate, the third pulley and the fourth pulley sleeves are provided with a second conveyor belt, the material stop plate is provided with a fifth pulley at one end away from the fourth pulley, the fourth pulley and the fifth pulley sleeves are provided with a third conveyor belt, and the third conveyor belt is fixedly connected to the measuring rod.

2. A packaging carton unfolding device according to claim 1, characterized in that: Two limit plates are provided, and the carton is laid flat between the two limit plates. A second rotation source is fixedly connected to the lower end of the frame, and a driving shaft fixed sleeve of the second rotation source is provided with a transmission gear. The frame is rotatably connected to a driven gear that can mesh with the transmission gear, and the driven gear is fixedly connected to a bidirectional screw rod, and both ends of the bidirectional screw rod are respectively threadedly connected to one of the limit plates.

3. A packaging carton unfolding device according to claim 1, characterized in that: The side wall of the limiting plate is fixedly connected with a second linear driver, and the second linear driver is used to drive the material-blocking plate to move along the thickness direction of the limiting plate.

4. A packaging carton unfolding device according to claim 1, characterized in that: The limiting plate is provided with a feeding mechanism, which is used to receive cartons and transport the cartons one by one to the unfolding suction cup.

5. A packaging carton unfolding device according to claim 4, characterized in that: The side wall of the limit plate is fixedly connected to a third linear driver, the driving shaft of the third linear driver is hinged with a connecting rod, the connecting rod is fixedly connected to a driven rod, the side wall of the driven rod is fixedly connected to a material stop block for storing cartons, the inner side wall of the limit plate is provided with a baffle plate for limiting the movement of cartons located above the bottom layer, the frame is fixedly connected to a conveying rack, the machine is slidably connected to a conveying plate for receiving the cartons on the material stop block, the conveying plate is fixedly connected to a third rotation source, the driving shaft of the third rotation source is fixedly sleeved with a conveying gear that can mesh with the conveying rack, and the top wall of the conveying plate is fixedly connected to a conveying suction cup.

6. A packaging carton unfolding device according to claim 5, characterized in that: The material baffle plate is slidably connected to the limiting plate, and the limiting plate is fixedly connected with a fourth linear actuator for driving the material baffle plate to move in a vertical direction.

7. The packaging carton unfolding device according to claim 2, characterized in that: The frame is fixedly connected with a guide rod, and the two limit plates are both slidably connected with the guide rod.

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