A box opening mechanism and a box packing machine

Abstract

The application relates to a box opening mechanism and a box filling machine, which comprise a first box opening assembly arranged on a rack of the box filling machine and used for rotating and transporting flat boxes from a storage place to a paper box conveying mechanism; a second box opening assembly used for opening the flat paper boxes in cooperation with the first box opening assembly during the transportation of the flat boxes by the first box opening assembly; and a box opening plate arranged on the front side of the first box opening assembly and used for contacting each lug plate at the front opening of the paper box and rotating the lug plate outward to open the front opening of the paper box during the transportation of the paper box. In the box opening mechanism and the box filling machine, the lug plate at the front opening of the paper box is opened synchronously during the opening of the paper box into a three-dimensional state, so that the front opening of the paper box is not shielded and is completely in an open state, the material is stably pushed into the paper box by a subsequent pushing mechanism, and the lug plate at the front opening of the paper box is fixed and sealed.

Description

Technical Field

[0001] This invention relates to the field of cartoning machine technology, and in particular to a carton opening mechanism and a cartoning machine. Background Technology

[0003] The existing carton opening mechanism in the cartoning machine opens the carton from a flat shape to a three-dimensional shape, and then transports the three-dimensional carton to the feeding station to load materials. However, the ear plate of the front opening of the carton that allows the materials to enter may block the front opening of the carton. When the materials enter, the ear plate will be folded into the carton, which will cause the carton to be unable to be sealed and thus become a defective product, resulting in a reduction in the cartoning efficiency of the cartoning machine. Summary of the Invention

[0004] This invention provides a box opening mechanism and a box packing machine. During the process of opening the carton into a three-dimensional state, the ear plate at the front opening of the carton is opened simultaneously, so that the front opening of the carton is not blocked and is fully open. This facilitates the subsequent pushing mechanism to stably push the material into the carton and ensures that the ear plate at the front opening of the carton is fixedly sealed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A box-opening mechanism, comprising: The first box-opening assembly is located on the frame of the cartoning machine. Its rotation axis is set in the front-to-back direction. It is used to rotate and transport the flat carton from its outer peripheral storage area to the carton conveying mechanism below it. The second box-opening assembly is mounted on the frame, and its rotation axis is set along the front-to-back direction. It is used to cooperate with the first box-opening assembly to open the flat paper box into a three-dimensional paper box during the transportation of the flat paper box by the first box-opening assembly. The box-opening plate includes an opening lug plate and a retaining plate. The opening lug plate is located in front of the first box-opening assembly, and the retaining plate is located in front of the carton conveying mechanism and is connected to the frame and vertically arranged. The opening lug plate is connected to the upper end of the retaining plate. The rear side of the opening lug plate is inclined forward relative to the rear side of the retaining plate so that during the rotation and transportation of the carton by the first box-opening assembly and the second box-opening assembly and the opening of the carton, the rear side of the opening lug plate is in contact with each lug plate at the front opening of the carton. During the downward movement towards the rear side of the retaining plate, each lug plate rotates away from the front opening of the carton, and when each lug plate abuts against the rear side of the retaining plate, the opening of each lug plate is at its maximum, so that the front opening of the three-dimensional carton placed on the carton conveying mechanism is in a fully open state.

[0006] Preferably, the ear-opening plate includes a first plate, a second plate, and a third plate, and the sides near the first box-opening assembly are respectively configured as a first inclined surface, a second inclined surface, and a third inclined surface; The first plate is connected to the retaining plate, and the second plate and the third plate are both connected to the first plate, so that the second inclined surface and the third inclined surface are both connected to the first inclined surface and form the opening surface. The second inclined surface and the third inclined surface are arranged along the rotation direction of the carton. The rear side of the retaining plate is set as the retaining surface. The angle between the first inclined surface and the retaining surface is smaller than the angle between the second inclined surface and the retaining surface and the angle between the third inclined surface and the retaining surface. The first long ear plate rotates and continuously abuts against the first inclined surface, and its opening increases as it approaches the holding surface; the second long ear plate abuts against the second inclined surface, the third inclined surface, and the first inclined surface in succession during rotation, and its opening increases as it approaches the holding surface; both the first and second short ear plates abut against the second inclined surface and the first inclined surface in succession during rotation, and their openings increase as they approach the holding surface.

[0007] Preferably, the opening plate further includes a guide rod, the guide rod being connected to the retaining plate, and the guide rod and the opening plate being arranged along the rotation direction of the carton; During the rotation and transportation process, the first long ear plate at the front opening of the cardboard box first contacts the guide rod, causing the first long ear plate near the retaining plate of the front opening of the flat box to initially rotate away from the front opening. Then it rotates continuously in contact with the first inclined surface. During the above process, the first long ear plate at the front opening of the cardboard box is further away from the rear side of the retaining plate than the second long ear plate.

[0008] Preferably, the box-opening plate further includes connecting plates, all of which are connected to the first plate, the second plate, and the third plate, so that the connecting plates connect the first inclined surface, the second inclined surface, and the third inclined surface near the side of the first box-opening assembly.

[0009] Preferably, the box-opening plate further includes a fourth plate that is inclined forward, the fourth plate being connected to the retaining plate, the guide rod being connected between the fourth plate and the first plate, and the side of the fourth plate near the first box-opening assembly being configured as a fourth inclined surface; During the rotation and transportation process, the portion of the first long ear plate that detaches from the first inclined surface comes into contact with the fourth inclined surface.

[0010] Preferably, a first guide plate and a second guide plate connected to the frame are further provided between the opening plate and the first opening component, and the two are spaced apart and form guide holes for clamping the front end of the paper box. The guide holes are inclined toward the external paper box conveying mechanism, and the guide holes cooperate with the clamping component of the external paper box conveying mechanism so that the paper box falls to the bottom of the clamping component.

[0011] Preferably, the first box-opening component includes a first drive mechanism and a gripping component; The gripping component includes a mounting plate and a first suction member. The mounting plate is connected to the first drive shaft of the first drive mechanism, and the first suction member is disposed on the mounting plate. The second box opening assembly includes a second drive mechanism and a first swing arm. The second drive mechanism is disposed on the first drive mechanism. The second drive shaft of the second drive mechanism is parallel to the first drive shaft. The second drive shaft is connected to the first swing arm so that the first swing arm can swing and open the flat cardboard box sucked on the first suction member during the swing.

[0012] Preferably, it also includes an auxiliary box-opening component, which is located outside the first box-opening component. The auxiliary box-opening component rotates to approach the cardboard box during the rotating transport process, picks up the cardboard box, and opens it.

[0013] Preferably, the auxiliary box-opening component and the first drive mechanism are connected by a linkage assembly, so that the auxiliary box-opening component rotates to approach the cardboard box which is in the process of rotating transport, picks up and opens the cardboard box.

[0014] A cartoning machine includes a carton opening mechanism, a carton conveying mechanism, and a carton storage mechanism. The first carton opening component in the carton opening mechanism picks up a flat carton from the carton storage mechanism and, in conjunction with the second carton opening component and the auxiliary carton opening component, opens the flat carton. During the opening process, the ear plate at the front opening of the carton contacts the carton opening plate and opens. The opened carton is then placed into the clamping component of the carton conveying mechanism for transport.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The flat cardboard box is opened by the cooperation of the first and second opening components. During the opening process, each ear plate at the front opening of the cardboard box can further contact the side of the opening plate. Under the action of the side of the opening plate, each ear plate at the front opening of the cardboard box rotates outward, so that the front opening of the cardboard box is not blocked and is fully open. This makes it easy for the subsequent pushing mechanism to push the material into the cardboard box stably. The ear plates will not fold into the cardboard box due to the pushing of the material, ensuring that the ear plates of the front opening of the cardboard box are fixedly sealed.

[0016] 2. Each ear plate at the front opening of the cardboard box rotates and opens away from the front opening of the cardboard box through the action of the opening plate. This process is completed during the transportation of the cardboard box by the first opening component. That is, during the process of the cardboard box changing from a flat cardboard box to a three-dimensional cardboard box, each ear plate at the front opening of the cardboard box rotates and opens away from the front opening of the cardboard box. The ear plates at the front opening of the cardboard box placed on the cardboard box conveying mechanism are in a rotating abutment state, and the front opening of the cardboard box is in an open state, which improves the opening efficiency of the cardboard box to a certain extent.

[0017] 3. The retaining plate is vertically set and located in front of the carton conveying mechanism. The front opening ear plate of the carton, which is in contact with the retaining plate, is already in the open state. During the carton transportation process, the front opening of the carton can remain open through the action of the retaining plate to prevent the ear plate at the front opening of the carton from springing back. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 The axial side of the box opening mechanism and the carton transport mechanism in the embodiments of the present invention. Figure 1 ; Figure 2 The axial side of the box opening mechanism and the carton transport mechanism in the embodiments of the present invention. Figure 2 ; Figure 3 The axial side of the box opening plate in an embodiment of the present invention Figure 1 ; Figure 4 The axial side of the box opening plate in an embodiment of the present invention Figure 2 ; Figure 5 This is a top view of the box opening panel in an embodiment of the present invention; Figure 6 This is a schematic diagram of the movement of each ear plate at the front opening of the paper box in an embodiment of the present invention, wherein A, B, C, and D correspond to the first long ear plate, the second long ear plate, the first short ear plate, and the second short ear plate, respectively; Figure 7 This is an isometric view of the ear-opening plate, the first guide plate, and the second guide plate in an embodiment of the present invention; Figure 8 This is a front view of the ear plate, the first guide plate, and the second guide plate in an embodiment of the present invention; Figure 9 This is an isometric view of the first box-opening assembly, the second box-opening assembly, and the auxiliary box-opening assembly according to an embodiment of the present invention; Figure 10 This is an isometric view of the first box-opening component in an embodiment of the present invention; Figure 11 This is a schematic diagram of the connection components in an embodiment of the present invention.

[0020] Explanation of reference numerals in the attached figures: 1. First box opening assembly; 11. First drive mechanism; 111. First drive shaft; 12. Mounting plate; 13. First suction component; 2. Second box opening assembly; 21. Second drive shaft; 22. First swing arm; 23. Roller; 3. Box opening plate; 31. Holding plate; 311. Holding surface; 32. Guide rod; 33. First plate; 331. First inclined surface; 34. Second plate; 341. Second inclined surface; 35. Third plate; 351. Third inclined surface; 36. Connecting plate; 37. Fourth plate; 371. Fourth inclined surface; 4. First guide plate; 5. Second guide plate; 6. Guide hole; 7. Auxiliary box opening assembly; 71. Third drive mechanism; 72. Second swing arm; 73. Second suction component; 8. Linkage assembly; 81. First rod; 82. Second rod; 83. Third rod; 9. Carton transport mechanism. Detailed Implementation

[0021] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0024] This invention provides a box-opening mechanism, installed on the frame of a cartoning machine, for transporting flat cartons located above it to a carton transport mechanism 9 located below it, and opening the flat cartons during transport. Figures 1-2As shown, the box-opening mechanism specifically includes a first box-opening component 1, a second box-opening component 2, and a box-opening plate 3. Both the first and second box-opening components 1 and 2 are mounted on the frame, and their rotation axes are both set along the front-to-back direction. The first box-opening component 1 is used to transport the flat cardboard box from its storage location to the lower cardboard box conveying mechanism via rotation. During the transport of the flat cardboard box, the second box-opening component 2 opens the box by rotating its sides, making it three-dimensional. The box-opening plate 3 is... On the outside of the first box opening assembly 1, specifically on the front side of the first box opening assembly 1, during the rotation and transport of the cardboard box, as the cardboard box is opened, each ear plate at the front opening of the cardboard box abuts against the side of the box opening plate 3 near the first box opening assembly 1. Under the action of the box opening plate 3, each ear plate at the front opening of the cardboard box will rotate outward relative to the front opening of the cardboard box, so that the front opening of the cardboard box opens. The opened front opening of the cardboard box is placed at the external cardboard box conveying mechanism and transported to the pushing station. The pushing mechanism at the pushing station pushes the material into the cardboard box.

[0025] Specifically, such as Figures 3-5 As shown, the box-opening plate 3 includes an opening lug plate and a retaining plate 31. The retaining plate 31 is vertically arranged, and the opening lug plate is connected to the upper end of the retaining plate 31. The rear side of the opening lug plate is inclined forward relative to the rear side of the retaining plate 31. The opening lug plate is located in front of the first box-opening assembly, and the retaining plate 31 is located in front of the paper box conveying mechanism 9. Thus, during the downward rotation and transport of the paper box by the first box-opening assembly, the lug plate at the front opening of the paper box first abuts against the rear side of the opening lug plate, and then abuts against the rear side of the retaining plate 31. Because the rear side of the opening lug plate is inclined forward... As each lug at the front opening of the cardboard box rotates downwards towards the rear side of the retaining plate 31, it gradually rotates away from the front opening and opens. When each lug abuts against the rear side of the retaining plate 31, the opening of the lug is at its maximum, and the front opening of the cardboard box is fully open. At this time, the first opening assembly 1 releases the cardboard box, and the cardboard box is placed at the cardboard box conveying mechanism 9. During the transport of the cardboard box by the cardboard box conveying mechanism 9, each lug at the front opening of the cardboard box abuts against the retaining plate 31, keeping the front opening of the cardboard box continuously open. It should be noted that materials are generally loaded into the cardboard box through the front opening, and the aforementioned front-to-back direction is based on the front opening of the cardboard box.

[0026] In summary, the first box-opening component 1 and the second box-opening component 2 work together to open the flat cardboard box into a three-dimensional state during rotation. During the opening of the flat cardboard box, each ear plate at the front opening of the cardboard box can further contact the side of the box-opening plate 3. Under the action of the rear side of the box-opening plate 3, each ear plate at the front opening of the cardboard box rotates away from the front opening of the cardboard box and opens, ensuring that the front opening of the cardboard box is not obstructed and is fully open. This facilitates the subsequent pushing mechanism to stably push the material into the cardboard box. The ear plates will not fold into the cardboard box due to the pushing of the material, ensuring that the ear plates at the front opening of the cardboard box are fixedly sealed. Furthermore, the cardboard box placed on the cardboard box transport mechanism 9 maintains the contact action of the rear side of the plate, ensuring that the front opening of the cardboard box remains open and does not spring back.

[0027] Specifically, the opening ear plate includes a first plate 33, a second plate 34, and a third plate 35. The first plate 33 is connected to the retaining plate 31, and the second plate 34 and the third plate 35 are respectively connected to the first plate 33. The sides of the first plate 33, the second plate 34, and the third plate 35 near the first box opening assembly 1 are respectively set as a first inclined surface 331, a second inclined surface 341, and a third inclined surface 351. The first inclined surface 331, the second inclined surface 341, and the third inclined surface 351 form the box opening surface. Moreover, the first inclined surface 331, the second inclined surface 341, and the third inclined surface 351 are inclined forward. When the front opening ear plate of the paper box contacts the above-mentioned inclined surfaces, the ear plate rotates and opens as the front opening ear plate of the paper box rotates and approaches the retaining surface 311.

[0028] like Figure 6 As shown, the second inclined surface 341 and the third inclined surface 351 are located outside the first inclined surface 331 along the rotation direction of the cardboard box. Therefore, during the rotation of the front opening ear plate of the cardboard box, except for the first long ear plate, all other ear plates will first contact the second inclined surface 341. The second long ear plate will successively abut against the second inclined surface 341, the third inclined surface 351 and the first inclined surface 331 during the rotation, and the opening will increase as it approaches the holding surface 311. The first short ear plate and the second short ear plate will successively abut against the second inclined surface 341 and the first inclined surface 331 during the rotation, and the opening will increase as they approach the holding surface 311.

[0029] To ensure that the first and second short lugs can stably contact and rotate open with the second inclined surface 341, the angle between the first inclined surface 331 and the retaining surface 311 is made smaller than the angle between the second inclined surface 341 and the retaining surface 311. Specifically, the second inclined surface 341 is further tilted forward based on the first inclined surface 331, so that the slope of the second inclined surface 341 is greater than that of the first inclined surface 331. This allows the first and second short lugs to more easily rotate outwards to contact the second inclined surface 341 during rotation, and then move to the first inclined surface 331. As the lugs rotate toward the retaining surface 311, their opening gradually increases. Similarly, to ensure that the second long lugs stably abut against the second inclined surface 341, the third inclined surface 351, and the first inclined surface 331 during rotation, such that the angle between the first inclined surface 331 and the retaining surface 311 is smaller than the angle between the third inclined surface 351 and the retaining surface 311, when the second long lugs reach and abut against the third inclined surface 351, they will naturally reach and abut against the first inclined surface 331 during rotation. As the second long lugs rotate toward the retaining surface 311, their opening gradually increases. When the second long ear plate moves from the second inclined plane 341 to the third inclined plane 351, the distance between the second inclined plane 341 and the third inclined plane 351 can be set to be smaller so that the second long ear plate can stably reach the third inclined plane 351 from the second inclined plane 341. In order to ensure that the second long ear plate reaches the third inclined plane stably, the angle between the third inclined plane 351 and the first inclined plane 331 can be made not less than the angle between the second inclined plane 341 and the first inclined plane 331, so that the third inclined plane 351 is set to be more inclined forward relative to the first inclined plane and the second inclined plane 341.

[0030] Specifically, the box opening plate also includes guide rods 32, all of which are connected to the upper end of the retaining plate 31. The guide rods 32 and the opening ear plates are arranged along the rotation direction of the carton. During the rotation and transportation of the carton, the first long ear plate (upper ear plate) of the front opening of the carton first contacts the guide rods 32 during the rotation and transportation process, and the first long ear plate is initially opened. The first long ear plate, which is initially opened, can continue to abut against the first inclined surface 331 during the rotation process. During the rotation process, the opening of the first long ear plate gradually increases, while the other ear plates contact other inclined surfaces during the rotation and transportation process, causing each ear plate to rotate outward. When each ear plate (the first long ear plate (upper ear plate), the second long ear plate (lower ear plate), the first short ear plate, and the second short ear plate) contacts the retaining surface 311 of the retaining plate 31 near the retaining surface 311 of the first box opening assembly 1, the opening of each ear plate of the front opening of the carton is at its maximum, and the front opening of the carton is in a fully open state and is not obstructed.

[0031] It is important to understand that during the entire carton rotation and transportation process, the lugs at the front opening of the carton also rotate. When the first long lug contacts the guide rod 32, it is closer to the outer carton conveying mechanism than the second long lug. When the first long lug contacts the holding surface 311, it is further away from the outer carton conveying mechanism than the second long lug. Therefore, when the first long lug is closer to the carton conveying mechanism than the second long lug, the vertical distance between the opening surface further away from the holding surface 311 or the carton conveying mechanism and the plane containing the holding surface 311 is greater. The portion of the first long ear plate that contacts the opening surface is closer to the holding surface 311 or the paper box conveying mechanism than the portion of the second long ear plate that contacts the opening surface. Therefore, the vertical distance between the portion of the first long ear plate that contacts the opening surface and the plane of the holding surface 311 is smaller than the vertical distance between the portion of the second long ear plate that contacts the opening surface and the plane of the holding surface 311. The second long ear plate can contact the opening surface and rotate, while the first long ear plate needs to contact the guide rod 32 first and rotate initially before it can stably contact the opening surface and continue to rotate, thus ensuring the stable rotation and opening of the first long ear plate.

[0032] The contact process between the front opening lugs of the cardboard box and the opening plate 3 is as follows: First, the front opening of the cardboard box moves to the outside of the first plate 33. During the rotation of the cardboard box, the first long lug continuously contacts the guide rod 32 to open it. During the opening of the cardboard box, the remaining lugs are slightly rotated outward. Then, the first long lug (upper lug) abuts against the first inclined surface 331, and the first short lug abuts against the second inclined surface 341. During the abutment of the first long lug against the first inclined surface 331, the first short lug rotates to and abuts against the first inclined surface 331, and the second long lug abuts against the second inclined surface 341. Subsequently, the cardboard box continues to rotate, and the second long lug... When the plate reaches and abuts the third inclined surface 351, it rotates outward upon contact. Then, when the second long ear plate (lower ear plate) reaches and abuts the first inclined surface 331, the second short ear plate abuts the second inclined surface 341 and rotates outward. Then, the second short ear plate abuts the first inclined surface 331 and rotates outward. All ear plates abut against the first inclined surface 331. As they rotate downward toward the retaining surface 311, the opening of each ear plate increases, and they finally abut against the retaining surface 311, keeping the front opening of the carton open and not blocked by the ear plates. Finally, the first long ear plate (upper ear plate) is located above the second long ear plate (lower ear plate).

[0033] Specifically, such as Figure 3As shown, the box-opening plate 3 also includes a connecting plate 36. The connecting plate 36 is connected to the first plate 33, the second plate 34 and the third plate 35, so that there is no gap between the second plate 34 and the third plate 35. The opening plate structure of the Zhenggege is stronger and has a longer service life. Moreover, the connecting plate 36 connects the first inclined surface 331, the second inclined surface 341 and the third inclined surface 351 near the side of the first box-opening component 1. It can also connect the second inclined surface 341 and the third inclined surface 351 through the side of the connecting plate 36, so that the second long ear plate can move stably from the second inclined surface 341 to the third inclined surface 351 and abut against the third inclined surface 351.

[0034] To avoid the long opening plate affecting the installation of other connecting parts, its length is less than that of the retaining plate 31, and it is located directly in front of the half-circle transport carton of the first box opening assembly 1. However, the carton is transported by rotating in an arc, so during the process of the carton abutting against the first inclined surface 331 and then against the retaining surface 311, the first long opening plate will mostly detach from the first inclined surface 331, leaving the first long opening plate mostly unsupported. This causes the first long opening plate to spring back, preventing it from smoothly abutting against the retaining surface 311. Therefore, the box opening plate 3 also includes a fourth plate 37 that is inclined forward, such as... Figure 3 As shown, the fourth plate 37 is connected to the retaining plate 31. The side of the fourth plate 37 near the first opening assembly 1 is set as the fourth inclined surface 371. During the rotation and transportation process, the part of the first long ear plate that is separated from the first inclined surface 331 will abut against the fourth inclined surface 371, which plays a transitional support role. The first long ear plate eventually moves stably to the retaining surface 311 and abuts against the retaining surface 311. Preferably, the guide rod 32 is connected between the fourth plate 37 and the first plate 33. Both the fourth plate 37 and the first plate 33 are connected to the guide rod 32 so that there is no gap between the fourth plate 37 and the first plate 33, and the first long ear plate can move stably from the first inclined surface 331 to the fourth inclined surface 371.

[0035] Because the carton conveying mechanism has a clamping assembly, which is generally composed of a clamping plate with a certain height, and the first opening assembly 1 is a rotating mechanism, the lowest point of the first opening assembly 1 should be higher than the clamping plate. To ensure that the carton can stably enter and be clamped by the clamping assembly when the first opening assembly 1 releases the carton at its lowest point, as follows... Figures 7-8As shown, a first guide plate 4 and a second guide plate 5 connected to the frame are provided between the opening plate 3 and the first opening assembly 1. The first guide plate 4 and the second guide plate 5 are spaced apart and form guide holes 6 for clamping the front end of the paper box. The guide holes 6 are inclined towards the external paper box conveying mechanism, that is, inclined downward. When the first opening assembly 1 places the paper box at the lowest point, the paper box enters the guide hole 6. Since the first opening assembly 1 will grab the upper part of the paper box, the part of the paper box placed in the guide hole 6 will fall into the clamping assembly. The clamping assembly will move under the drive of the paper box conveying mechanism, thereby the clamping assembly will drive the front end of the paper box to slide along the guide hole 6 and separate from the guide hole 6 to enter the bottom of the clamping assembly and be stably clamped.

[0036] Specifically, the first guide plate 4 and the second guide plate 5 are spaced apart from the retaining plate 31, so that when the front end of the carton slides through the guide hole 6, the first long ear plate and the second long ear plate at the front opening of the carton are respectively located between the first guide plate 4 and the retaining plate 31 and between the second guide plate 5 and the retaining plate 31, so that the first long ear plate and the second long ear plate are stably attached to the retaining plate 31. At the outer pushing station, there are two pressure plates, and the two pressure plates and the retaining plate 31 are arranged side by side with the first guide plate 4 along the carton transport direction. At the pushing station, the first long ear plate (upper ear plate) must be kept fully open so as not to block the front opening of the carton and ensure that the material enters the carton through the front opening. During the carton transportation process, the first long ear plate (upper ear plate) moves between the first guide plate 4 and the holding plate 31, and then enters between the two pressure plates set at the subsequent pushing station, so that the first long ear plate (upper ear plate) is stably in the open state, ensuring that the first long ear plate (upper ear plate) does not block the front opening of the carton and that the material enters the carton through the front opening.

[0037] Specifically, such as Figures 9-10 As shown, the first box-opening assembly 1 includes a first driving mechanism 11 and a gripping assembly. The gripping assembly includes a mounting plate 12 and a first suction member 13. The mounting plate 12 is connected to the first drive shaft 111 of the first driving mechanism 11. The first suction member 13 is disposed on the mounting plate 12. The first suction member 13 can be configured as a suction cup and equipped with an air tube. The air tube and the first suction member 13 pick up the paper box from the flat paper box storage area, and under the drive of the first driving mechanism 11, drive the mounting plate 12 and the first suction member 13 to rotate, transporting the paper box to the paper box conveying mechanism below. The first driving mechanism 11 includes a rotating motor and a driving assembly. The rotating motor and the driving assembly work together to enable the first suction member 13 to achieve a prismatic trajectory, with each 1 / 4 circumference being a concave arc. The driving assembly can use an existing mechanism to achieve the prismatic trajectory, which will not be described in detail here.

[0038] Specifically, the second box-opening assembly 2 includes a second drive mechanism and a first swing arm 22. The second drive mechanism is located on the first drive mechanism 11, and its second drive shaft 21 is parallel to the first drive shaft 111. The second drive shaft 21 is connected to the first swing arm 22, passes through the mounting plate 12, and cooperates with the bearing on the mounting plate 12 so that the second drive shaft 21 can rotate relative to the mounting plate 12 and drive the first swing arm 22 to swing relative to the mounting plate 12, so as to squeeze and push open the flat cardboard box picked up by the first suction member 13 during the swing. Specifically, the second drive mechanism can be a rotary motor or other drive mechanism, and the end of the first swing arm 22 away from the second drive shaft 21 has a roller 23. The roller 23 squeezes the side of the cardboard box, changing the cardboard box from a flat shape to a three-dimensional state.

[0039] It should be noted that the first suction member 13 and the second box opening component 2 can be configured in multiple ways. In this embodiment, there are three of each, which are evenly distributed around the mounting plate 12. One first suction member 13 and one second box opening component 2 form a box opening component, which changes the flat shape into a three-dimensional state during the transportation of the cardboard box.

[0040] The box opening mechanism also includes an auxiliary box opening component 7, which is located outside the first box opening component 1. The auxiliary box opening component 7 rotates to approach the cardboard box during the rotation and transportation process, and can pick up and open the cardboard box, thereby stabilizing the flat cardboard box to open into a three-dimensional shape, and preventing the second box opening component 2 from failing to open the flat cardboard box into a three-dimensional shape. Specifically, the auxiliary box opening component 7 includes a third drive mechanism 71, a second swing arm 72, and a second suction member 73. The second suction member 73 can be set as a suction cup and equipped with an air tube. The output shaft of the third drive mechanism 71 is connected to the end of the second swing arm 72, and drives the second suction member 73 on the other end of the second swing arm 72 to rotate to approach and move away from the first suction member 13 on the first box opening component 1.

[0041] To ensure the consistency of rotation between the auxiliary box-opening component 7 and the first box-opening component 1, such as Figure 11As shown, the auxiliary box-opening assembly 7 and the first drive mechanism 11 are connected by a linkage assembly 8, so that the drive source (rotary motor) in the first drive mechanism 11 can simultaneously drive the first suction member 13 and the second suction member 73 to operate simultaneously, ensuring better consistency in the cooperation between the first suction member 13 and the second suction member 73, and making the box opening more stable. Specifically, the linkage assembly 8 is a four-bar linkage assembly 8, which includes a first rod 81, a second rod 82, and a third rod 83. The adjacent ends of the first rod 81, the second rod 82, and the third rod 83 are rotatably connected. The first rod 81 is connected to the drive shaft of the drive source in the first drive mechanism 11, and the third rod 83 is connected to the input shaft of the third drive mechanism 71. The third drive mechanism 71 can be a gear assembly to adjust the rotation speed of the second swing arm 72. Moreover, the output shaft of the drive source of the first drive mechanism 11 can be connected to a gear set, and the first rod 81 is connected to the output gear shaft of the gear set to further adjust the rotation speed of the first rod 81.

[0042] This invention also discloses a cartoning machine, including the aforementioned carton opening mechanism, carton conveying mechanism, and carton storage mechanism. The first carton opening component 1 in the carton opening mechanism grabs a flat carton from the carton storage mechanism and, together with the second carton opening component 2 and the auxiliary carton opening component 7, opens the flat carton. During the opening process, the ear plate at the front opening of the carton contacts the opening plate 3 and opens, and the front opening of the carton is finally in an open state. The open carton is placed into the clamping component of the carton conveying mechanism for transportation. The carton storage mechanism is configured as a conveyor belt conveying mechanism.

[0043] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A box-opening mechanism, characterized in that, include: The first box-opening assembly is located on the frame of the cartoning machine. Its rotation axis is set in the front-to-back direction. It is used to rotate and transport the flat carton from its outer peripheral storage area to the carton conveying mechanism below it. The second box-opening assembly is mounted on the frame, and its rotation axis is set along the front-to-back direction. It is used to cooperate with the first box-opening assembly to open the flat paper box into a three-dimensional paper box during the transportation of the flat paper box by the first box-opening assembly. The box-opening plate includes an opening lug plate and a retaining plate. The opening lug plate is located in front of the first box-opening assembly, and the retaining plate is located in front of the carton conveying mechanism and is connected to the frame and vertically arranged. The opening lug plate is connected to the upper end of the retaining plate. The rear side of the opening lug plate is inclined forward relative to the rear side of the retaining plate so that during the rotation and transportation of the carton by the first box-opening assembly and the second box-opening assembly and the opening of the carton, the rear side of the opening lug plate is in contact with each lug plate at the front opening of the carton. During the downward movement towards the rear side of the retaining plate, each lug plate rotates away from the front opening of the carton, and when each lug plate abuts against the rear side of the retaining plate, the opening of each lug plate is at its maximum, so that the front opening of the three-dimensional carton placed on the carton conveying mechanism is in a fully open state.

2. The box-opening mechanism according to claim 1, characterized in that, The ear-opening plate includes a first plate, a second plate, and a third plate, and the sides near the first box-opening assembly are respectively configured as a first inclined surface, a second inclined surface, and a third inclined surface; The first plate is connected to the retaining plate, and the second plate and the third plate are both connected to the first plate, so that the second inclined surface and the third inclined surface are both connected to the first inclined surface and form the opening surface. The second inclined surface and the third inclined surface are arranged along the rotation direction of the carton. The rear side of the retaining plate is set as the retaining surface. The angle between the first inclined surface and the retaining surface is smaller than the angle between the second inclined surface and the retaining surface and the angle between the third inclined surface and the retaining surface. The first long ear plate rotates and continuously abuts against the first inclined surface, and its opening increases as it approaches the holding surface; the second long ear plate abuts against the second inclined surface, the third inclined surface, and the first inclined surface in succession during rotation, and its opening increases as it approaches the holding surface; both the first and second short ear plates abut against the second inclined surface and the first inclined surface in succession during rotation, and their openings increase as they approach the holding surface.

3. The box-opening mechanism according to claim 2, characterized in that, The box-opening plate also includes a guide rod, which is connected to the retaining plate. The guide rod and the opening plate are arranged along the rotation direction of the carton. During the rotation and transportation process, the first long ear plate at the front opening of the cardboard box first contacts the guide rod, causing the first long ear plate near the retaining plate of the front opening of the flat box to initially rotate away from the front opening. Then it rotates continuously in contact with the first inclined surface. During the above process, the first long ear plate at the front opening of the cardboard box is further away from the rear side of the retaining plate than the second long ear plate.

4. The box-opening mechanism according to claim 3, characterized in that, The box-opening plate also includes connecting plates, which are connected to the first plate, the second plate and the third plate, so that the connecting plates connect the first inclined surface, the second inclined surface and the third inclined surface near the side of the first box-opening assembly.

5. The box-opening mechanism according to claim 3, characterized in that, The box-opening plate also includes a fourth plate that is inclined forward. The fourth plate is connected to the retaining plate. The guide rod is connected between the fourth plate and the first plate. The side of the fourth plate near the first box-opening assembly is configured as a fourth inclined surface. During the rotation and transportation process, the portion of the first long ear plate that detaches from the first inclined surface comes into contact with the fourth inclined surface.

6. The box-opening mechanism according to claim 2, characterized in that, A first guide plate and a second guide plate connected to the frame are provided between the box opening plate and the first box opening component. The two guide plates are spaced apart and form guide holes for clamping the front end of the paper box. The guide holes are inclined toward the external paper box conveying mechanism. The guide holes cooperate with the clamping component of the external paper box conveying mechanism so that the paper box falls to the bottom of the clamping component.

7. The box-opening mechanism according to any one of claims 1-6, characterized in that, The first box-opening component includes a first drive mechanism and a gripping component; The gripping component includes a mounting plate and a first suction member. The mounting plate is connected to the first drive shaft of the first drive mechanism, and the first suction member is disposed on the mounting plate. The second box opening assembly includes a second drive mechanism and a first swing arm. The second drive mechanism is disposed on the first drive mechanism. The second drive shaft of the second drive mechanism is parallel to the first drive shaft. The second drive shaft is connected to the first swing arm so that the first swing arm can swing and open the flat cardboard box sucked on the first suction member during the swing.

8. The box-opening mechanism according to claim 7, characterized in that, It also includes an auxiliary box-opening component, which is located outside the first box-opening component. The auxiliary box-opening component rotates to approach the cardboard box that is in the process of rotating and transporting, picks up the cardboard box and opens it.

9. The box-opening mechanism according to claim 8, characterized in that, The auxiliary box opening component and the first drive mechanism are connected by a linkage assembly so that the auxiliary box opening component rotates to approach the cardboard box which is in the process of rotating transport, picks up and opens the cardboard box.

10. A cartoning machine, characterized in that, The device includes the box opening mechanism, the box conveying mechanism, and the box storage mechanism as described in claim 9. The first box opening component in the box opening mechanism grabs the flat box from the upper box storage mechanism and, together with the second box opening component and the auxiliary box opening component, opens the flat box. During the opening of the flat box, the ear plate at the front opening of the box contacts the box opening plate and opens. The opened box is then placed into the clamping component of the box conveying mechanism for transport.

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