A finished cigarette box automatic cover belt device and system

Abstract

The present invention relates to an automatic cover-tie device and system for finished cigarette boxes, the device comprises a strap bracket, an unfolding mechanism for flipping the cover of the box cover, and a strapping mechanism for picking up the strap from the strap bracket and covering the strap on the side of the carton, wherein: the unfolding mechanism comprises four cover-tie modules for flipping the cover of each box cover; the strapping mechanism comprises four clamping modules for clamping the strap, a moving module for driving the clamping modules to transfer, and a stripping module for pulling the strap away from the clamping modules, and the straps clamped by each clamping module at the same time are in a rectangular ring shape that matches the carton cover area; the strap bracket comprises four vertical rods for pre-tensioning the annular strap to a rectangular ring shape, and the annular strap tensioned by the vertical rods is also in a rectangular ring shape that matches the carton cover area. It can automatically flip the carton cover and automatically perform the strapping operation, reduce manpower occupation, and reduce the restriction of the cigarette box cover-tie process on the operation speed of packing and supplying finished cigarettes.

Description

Technical Field

[0001] The invention relates to the field of packing lines, and in particular to an automatic cover-covering and belting device and system for finished cigarette boxes. Background Art

[0002] In the process of packing and feeding finished cigarettes, the folded cartons on the production line need to be unfolded first, so that the four side panels of the carton are unfolded into a rectangular tube. At this time, the upper and lower flaps of the carton are still coplanar with the adjacent carton side panels. Therefore, the flaps constituting the bottom of the carton need to be closed first, and then the flaps constituting the cover of the carton need to be turned toward the outside of the carton so that the flaps constituting the cover of the carton are lower than the top opening of the carton, ensuring that the top opening of the carton is not blocked by the cover of the carton. Before the actual packing operation, it is generally necessary to first swing the flaps constituting the cover of the carton to fit the outer side of the side panel of the carton, and then put a ring-shaped strap (such as a ring-shaped hemp rope) on the side of the carton from top to bottom, and use the ring-shaped strap to tighten the carton flap to the outer side of the carton side panel to prevent the freely swinging cover from interfering with the packing operation.

[0003] At present, when arranging cigarette boxes, the operation of closing the bottom of the box can be automated, but when unfolding the box cover, the staff still needs to manually flip the box cover and put on the straps. However, this process is complicated and requires the straps to be aligned and put on the side of the box. This operation requires a long time of repeated unfolding of the box cover and putting on the straps, which is labor-intensive, takes up a lot of manpower, and has low work efficiency. The speed of the manual cigarette box flip cover and strapping process is difficult to maintain stable. If the speed of the flip cover and strapping process slows down, it will not be able to provide enough cartons for packing, which will cause the subsequent finished cigarette packing and supply operations to be suspended, affecting work efficiency. Therefore, the industry urgently needs to develop a device that can automatically unfold the cigarette box cover and put the straps on the side of the cigarette box. Summary of the invention

[0004] The present invention solves the problem that when workers need to manually unfold the box cover and put on the belt on the cigarette box during the process of packing and supplying finished cigarettes, it will occupy a lot of manpower, have low work efficiency, and affect the efficiency of subsequent packing and supplying of finished cigarettes. Provided is a finished cigarette box automatic cover and belt putting device and system to solve this technical problem, adopts an unfolding mechanism and a belt putting mechanism to cooperate, and the movable structure of the unfolding mechanism can automatically flip the various swing covers of the carton cover to fit with the outer side surface of the carton side plate when moving, and then the belt putting mechanism clamps the annular strap to be put on, and directly puts the clamped annular strap on the side of the carton. During the whole process, there is no need for workers to manually unfold the box cover and put on the belt, which reduces manpower occupation, improves work efficiency, and reduces the limitation of the cigarette box flipping and belting process on the packing and supplying operation speed of finished cigarettes.

[0005] In order to solve the above technical problems, the technical solution of the present invention is as follows:

[0006] A finished cigarette box automatic cover strapping device comprises a frame and a strap bracket on which an annular strap is placed, the frame is provided with an unfolding mechanism for flipping the swing cover of the carton cover to fit the outer side of the carton side plate, and a strap strapping mechanism for picking up the strap from the strap bracket and transferring the strap to the side of the carton, wherein:

[0007] The unfolding mechanism comprises four flap modules corresponding to the swing flaps of the box cover, with the side of the swing flap facing the inside of the carton when the box cover is closed as the inner side, and the flap module comprises a movable structure abutting against the inner side of the corresponding swing flap, a longitudinal shift component driving the movable structure to rise and fall, and a transverse shift component driving the movable structure to deflect in the horizontal direction, and the deflection track of the movable structure driven by the transverse shift component intersects with the projection of the rotation axis of the corresponding swing flap on the same horizontal plane;

[0008] The strapping mechanism comprises four clamping modules for clamping the straps, a moving module driving the clamping modules to transfer between the strap bracket and the carton, and a strap-pulling module for pulling the straps sleeved on the side of the carton away from the clamping module, the clamping module comprises a clamping seat and two vertical clamping sections connected below the clamping seat for clamping the straps, the two clamping sections are controlled to open and close in the horizontal direction, and the straps clamped by the clamping modules at the same time are in a rectangular ring shape that matches the strapping area of ​​the carton, the strap-pulling module is arranged next to the carton, and the strap-pulling module comprises a sliding seat that is controlled to slide vertically, a shifting block that is rotatably connected to the sliding seat, and a rotation driving assembly that drives the shifting block to rotate, when the strap clamped by the clamping module is sleeved on the outside of the carton, the rotation trajectory of at least one end of the shifting block intersects with the projection of the strap on the same horizontal plane;

[0009] The strap bracket includes four vertical poles for pre-tensioning the annular strap to a rectangular ring shape. The annular strap tensioned by the vertical poles is in a rectangular ring shape that matches the carton strap area. The side of the vertical pole that abuts the strap is also provided with a vertical through groove for a clamping section of the corresponding clamping module to pass through.

[0010] Preferably, in the unfolding mechanism, the longitudinal movement assembly includes a vertically arranged linear motor and a longitudinal movement frame connected to the mover of the linear motor, the movable structure is rotationally coordinated with the longitudinal movement frame, and the rotation axis of the movable structure is parallel to the rotation axis of the corresponding rocker cover, and the transverse movement assembly includes a power cylinder connected between the movable structure and the longitudinal movement frame, and the cylinder body and piston rod of the power cylinder are respectively hinged to the longitudinal movement frame and the movable structure.

[0011] Preferably, a smooth arc surface is provided at a portion where the movable structure abuts against the corresponding swing cover, and the axis of the arc surface is parallel to the rotation axis of the corresponding swing cover.

[0012] Preferably, when the clamping module clamps the annular band, the clamping section of the clamping module located inside the annular band is the inner clamping section. After the swing cover of the box lid is flipped over to fit the side of the carton, while the clamping module is putting the annular band on the side of the carton, the inner clamping section of the clamping module is located in the gap between two adjacent swing covers, and the annular band clamped by the clamping module is directly fit with the side of the swing cover facing away from the carton.

[0013] Preferably, when the clamping module clamps the annular band, the clamping section of the clamping module located inside the annular band is the inner clamping section, and the part of the clamping module located inside the annular band is also provided with a limiting structure. When the clamping module puts the band on the side of the carton, the clamping module abuts against the top opening of the carton through the limiting structure to limit the maximum distance of the clamping module sliding toward the bottom of the carton.

[0014] The limiting structure is an extension section formed by the clamping seat extending toward the inner side of the annular binding band, and the extension section protrudes from the side of the inner clamping section facing away from the outer clamping section; or

[0015] The limiting structure is a horizontal section connected to the inner clamping section, and the horizontal section is located on a side of the inner clamping section facing away from the outer clamping section.

[0016] Preferably, four belt-pulling modules are provided, and when the clamping module sleeves the annular strap onto the side of the carton, each belt-pulling module is located adjacent to a clamping module.

[0017] Preferably, each of the belt-pulling modules is matched with an adjacent clamping module, one end of the belt-pulling block is rotatably connected to the sliding seat around a vertical axis, and the other end of the belt-pulling block is a free end. The corresponding belt-pulling modules and clamping modules are configured as follows:

[0018] In the process of pulling the strap on the side of the carton away from the clamping module, the height position of the pull block of the pull belt module is higher than the strap, and the clamping module is located on the rotation path of the free end of the corresponding pull block. When the pull block rotates until its free end abuts against the corresponding clamping module, the free end of the pull block is located above the strap.

[0019] Preferably, the finished cigarette box automatic flip cover strapping device further comprises a strap loading rack and an automatic loading device cooperating with the strap bracket, wherein:

[0020] The strap loading rack includes two horizontal and mutually parallel cross bars for hanging the straps to be loaded, the height positions of the two cross bars are consistent, one end of the cross bar extends toward the strap bracket and is suspended, the two cross bars pass through the inner side of the annular strap to be loaded, a section of the strap between the two cross bars is defined as a load-bearing section, the length direction of the cross bar is the loading direction, and the horizontal direction and perpendicular to the loading direction is the tensioning direction;

[0021] The strap bracket includes a platform matched with the vertical pole, the top surface of the platform is lower than the position of the horizontal rod toward the support of the strap to be loaded, the platform is provided with through holes for each vertical pole to pass through in the vertical direction, the four through holes are arranged in two rows and two columns along the loading direction and the tensioning direction, and the through holes have a margin space for the vertical pole to slide in the tensioning direction, and the platform is also provided with a double-freedom displacement module for driving each vertical pole to slide in the vertical direction and the tensioning direction;

[0022] The automatic feeder includes a clamp for clamping the load-bearing section of the strap to be loaded and a loading displacement module for driving the clamp to slide back and forth between the strap loading rack and the platform along the loading direction. At least two clamps for clamping a strap are arranged along the tensioning direction, and the height positions of the two clamps correspond to the height position of the load-bearing section of the strap to be loaded.

[0023] In the process of the clamp sliding the strap along the loading direction and feeding it from the strap loading rack to the platform, the area through which the part of the strap clamped between the clamps moves as the clamp moves is defined as the dragging area, and when the four vertical poles of the strap bracket slide along the tensioning direction, there is at least one set of vertical pole distribution positions so that the four vertical poles are all located within the projection range of the dragging area on the top surface of the platform.

[0024] Preferably, each of the cross bars is provided with a conveyor belt assembly, and the conveyor belt assembly includes two pulleys rotatably connected to the cross bar and a closed-loop belt wrapped around the two pulleys, the rotation direction of the pulleys is parallel to the tensioning direction, and the two pulleys are arranged in parallel along the loading direction, and the cross bar supports the straps to be loaded through the belts of the conveyor belt assembly, and a plurality of belt grooves for the straps to be embedded are provided on the outer side of the belt, and the belt grooves are connected along the width direction of the belt, and the belt grooves of the two conveyor belt assemblies correspond to each other in the distribution positions along the length direction of the belt.

[0025] Preferably, there are two strap loading racks, which are respectively arranged on both sides of the strap bracket, and two groups of clamps of the automatic loader are correspondingly provided, and the two groups of clamps are respectively used to clamp the straps to be loaded on the two strap loading racks.

[0026] Preferably, the four clamping modules of the strap mechanism are all connected to the same plate body, and the moving module is connected to the plate body, and drives the four clamping modules to move synchronously through the plate body.

[0027] A finished cigarette box automatic flap belting system comprises a carton production line with a flap belting station and the above-mentioned finished cigarette box automatic flap belting device, wherein the finished cigarette box automatic flap belting device cooperates with the carton to be belted at the flap belting station.

[0028] For the cartons to be taped that move through the flap-capping station, the belt-pulling modules of the strapping mechanism are respectively located on both sides of the path along which the carton to be taped moves along the carton assembly line; when the active structure of the flap module is raised to the highest position, the flap module located on the carton moving path as a whole avoids the moving trajectory of the carton to be taped.

[0029] Preferably, the flap-covering and strapping station of the cigarette box assembly line is provided with a blocker, and the blocker is located on the path of the cigarette box moving along the cigarette box assembly line to control the carton to be strapped to stop accurately at the flap-covering and strapping station.

[0030] Beneficial technical effects of the technical solution of the present invention:

[0031] (I) The unfolding mechanism includes four flap modules corresponding to the flaps of the carton cover. The movable structure of the flap module can be offset in the horizontal direction and lifted in the vertical direction. The trajectory of the movable structure offset in the horizontal direction intersects with the projection of the rotation axis of the corresponding flap on the same horizontal plane. Therefore, when the movable structure abuts against the inner side of the corresponding flap, the movable structure moves toward the outside of the carton and can move downward to push the corresponding flap to flip and fit with the outer side of the carton side panel, thereby realizing the operation of automatically unfolding the cover.

[0032] The strapping shape clamped by the four clamping modules of the strapping mechanism is a rectangular ring that fits the strapping area of ​​the carton. The moving module drives the clamping module to move, so that the rectangular ring-shaped strap can be accurately put on the side of the carton. The shifting block of the strapping module can move vertically and rotate around the vertical axis, and the rotation trajectory of one end of the shifting block intersects with the projection of the strap on the horizontal plane. After the shifting block is controlled to move above the strap on the side of the carton, the clamping module is controlled to loosen the strap and move upward. The strap is blocked by the shifting block and remains on the side of the carton, and the strapping operation is completed.

[0033] The unfolding mechanism cooperates with the strapping mechanism to realize the operation process of automatically unfolding the carton cover, putting an annular strap on the side of the carton, and tightening the swing cover of the carton cover. There is no need for staff to manually flip the cover and strap it, which can reduce manpower occupation and improve work efficiency. Moreover, the speed of automatic flipping and strapping operations can also remain stable, avoiding the problem of suspension of finished cigarette packing and supply operations due to slowing down of the flipping and strapping speed of the cigarette box, thereby improving the efficiency of finished cigarette packing and supply operations.

[0034] (ii) In the process of the movable structure contacting the swing cover and pushing the swing cover to unfold, relative sliding will occur between the movable structure and the swing cover. Therefore, the part where the movable structure contacts the swing cover is set as an arc surface, and the movable structure abuts against the swing cover through the arc surface. Since the axis of the arc surface is parallel to the rotation axis of the swing cover, when the arc surface and the swing cover slide relative to each other, the inner side surface of the swing cover will not be scratched.

[0035] (III) When the strapping mechanism puts the annular strap on the side of the carton, the inner clamping section of the clamping module is located in the gap between two adjacent flaps, so the strap does not need to contact the flap through the inner clamping section, and can directly fit the flap. Therefore, during the strapping process, the circumference of the strap only needs to meet the condition of being able to tightly tighten the flap of the carton, and no additional margin is required for the circumference of the strap. When the strap is put on the outside of the carton, it can ensure that the strap can stably tighten the flap of the carton and is not easy to fall off. In addition, when the clamping module puts the strap on the side of the carton, the inner clamping section of the clamping module does not contact the flap during movement, which can also prevent the inner clamping section from scratching the flap.

[0036] (IV) The strap bracket includes a platform that cooperates with the vertical pole. The vertical pole can be raised and lowered relative to the platform and can also slide along the tensioning direction. The multiple clamps of the automatic loader are arranged along the tensioning direction. The clamp drives the clamped strap to slide along the feeding direction through the strap bracket. The range through which the part of the strap clamped by the clamp slides along the feeding direction is the dragging range. The four vertical poles are all moved to the dragging area within the projection range of the platform, and before the clamped strap is slid and fed to the strap bracket, the vertical poles are lowered in advance to prevent the vertical poles from hindering the movement of the strap.

[0037] When the strap clamped by the clamp slides through each vertical pole along the feeding direction, the vertical pole is promptly controlled to extend upward from the top surface of the platform so that the vertical pole is inserted into the inner side of the ring strap. Then the vertical poles arranged along the tensioning direction are controlled to slide away from each other so that the ring strap is tensioned into a rectangular ring that matches the carton strapping area. The four clamping modules of the strapping mechanism can then easily align and clamp the strap, and the automatic feeder cooperates with the slidable vertical pole to automatically put the strap on the four vertical poles of the strap bracket, realizing automatic and continuous supply of straps.

[0038] (V) A conveyor belt assembly is installed on the crossbar, and the straps to be loaded are hung on the belt of the conveyor belt assembly. Therefore, the conveyor belt assembly can be used to feed the hung straps to the strap bracket one by one to the designated position. The clamp of the automatic loader can move to the designated position to clamp the strap each time. There is no need to change the sliding distance required for the clamp to clamp the strap next time after each clamping. This facilitates automatic control and is less likely to cause problems such as the clamp clamping empty straps or clamping multiple straps at the same time.

[0039] (VI) There is a strap loading rack on each side of the strap bracket, and the automatic loader has two sets of clamps, which are respectively matched with the two strap loading racks. In actual use, the automatic loader can alternately clamp the straps on the two strap loading racks. After transferring the straps of one strap loading rack to the strap bracket, it does not need to return empty-handed, but can directly go to clamp the straps of another strap loading rack, which can improve the working efficiency of the automatic loader.

[0040] In addition, the automatic loader can also continuously clamp the straps hanging on one strap loading rack until all the straps on the strap loading rack are transferred, and then control the automatic loader to clamp the straps on another strap loading rack. At this time, the strap loading rack that has been taken out can be replaced, that is, the strap loading will not be interrupted during the process of replacing the strap loading rack, ensuring that the automatic loader can continuously load, and the flap strapping operation will not be interrupted due to the replacement of the strap loading rack. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It shows a schematic structural diagram of the automatic cover belt system for finished cigarette boxes in an embodiment of the present invention;

[0042] Figure 2 A schematic diagram showing the coordination of the unfolding mechanism, the strapping mechanism and the carton production line in an embodiment of the present invention is shown;

[0043] Figure 3 Shows Figure 2 The enlarged view of point A in the middle;

[0044] Figure 4 A schematic diagram showing the cooperation between the unfolding mechanism and the carton to be strapped in an embodiment of the present invention is shown;

[0045] Figure 5 A schematic diagram showing the cooperation between the strapping mechanism and the carton to be strapped in an embodiment of the present invention is shown;

[0046] Figure 6 a shows a schematic diagram of a structural scheme of connection between a limiting structure and an inner clamping section in an embodiment of the present invention;

[0047] Figure 6 b shows a schematic diagram of the structural scheme of the connection between the limiting structure and the clamping seat in an embodiment of the present invention;

[0048] Figure 7 A schematic diagram of the structure of a strap supply device in an embodiment of the present invention is shown;

[0049] Figure 8 A schematic diagram showing the connection between the strap loading rack and the conveyor belt assembly in an embodiment of the present invention is shown;

[0050] Fig. 9 A schematic diagram showing the coordination between the loading strap to be loaded and the conveying strap loading rack in an embodiment of the present invention is shown;

[0051] Fig.10 A schematic diagram showing the cooperation between the strap bracket and the automatic feeder in an embodiment of the present invention is shown;

[0052] Fig.11 A schematic diagram showing the connection between the dual-degree-of-freedom displacement module and the vertical pole in an embodiment of the present invention is shown;

[0053] Fig.12 a shows a schematic diagram of a vertical pole structure in the form of an angle steel in an embodiment of the present invention;

[0054] Fig.12 b shows a schematic diagram of the vertical pole structure in the form of a rectangular pole body in an embodiment of the present invention.

[0055] Markings in the accompanying drawings:

[0056] 1- rack;

[0057] 2-Carton assembly line; 21-Flip cover belt station;

[0058] 3-unfolding mechanism; 31-longitudinal movement assembly; 311-longitudinal movement frame; 32-lateral movement assembly; 321-power cylinder; 33-movable structure; 331-arc surface;

[0059] 4-belt mechanism; 41-moving module; 411-plate body; 42-clamping module; 421-clamping seat; 422-inner clamping section; 423-outer clamping section; 424-clamping cylinder; 425-limiting structure; 43-belt module; 431-sliding seat; 432-shifting block; 433-rotation drive assembly;

[0060] 5-binding bracket; 51-platform; 511-through hole; 52-vertical pole; 521-through slot; 53-dual-degree-of-freedom displacement module;

[0061] 6-belt loading rack; 61-column; 62-crossbar; 63-conveyor belt assembly; 631-pulley; 632-belt; 633-belt groove;

[0062] 7-automatic loader; 71-sliding seat; 72-clamp; 721-clamping body; 722-clamping claw; 73-loading displacement module;

[0063] 8-carton; 81-shake cover;

[0064] 9-binding strap; 91-load-bearing section. DETAILED DESCRIPTION

[0065] In order to make the purpose, technical scheme and advantages of the present invention clearer, the following is a further detailed description of a finished cigarette box automatic flip cover belt device and system proposed by the present invention in combination with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the present invention will be clearer. It should be noted that the accompanying drawings adopt a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, please refer to the accompanying drawings. It should be noted that the structure, proportion, size, etc. illustrated in the accompanying drawings of this specification are only used to match the content disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effect that the present invention can produce and the purpose that can be achieved, should still fall within the scope of the technical content disclosed by the present invention.

[0066] The following will be combined with the attached Figures 1 to 12 The technical scheme of the automatic cover-covering and strapping device and system for a finished cigarette box of the present invention is described in detail with specific embodiments. Example

[0067] like Figures 1 to 12 As shown, the automatic flip-cover and strapping device for finished cigarette boxes of this embodiment includes a frame 1 and a strap bracket 5 on which a ring-shaped strap 9 is placed. The range of the frame 1 covers the strap bracket 5 and the carton 8 to be strapped. The frame 1 is equipped with an unfolding mechanism 3 for flipping the swing cover 81 of the carton 8 to fit the outer side of the side panel of the carton 8 and a strapping mechanism 4 for picking up the strap 9 from the strap bracket 5 and transferring the picked strap 9 to the side of the carton 8. After placing the carton 8 upright (the closed bottom of the box is at the bottom and the open lid is at the top), the unfolding mechanism 3 can automatically unfold the swing cover 81 of the box cover of the carton 8, and flip the swing cover 81 of the box cover to fit the outer side of the side plate of the carton 8. Then the belt mechanism 4 puts the annular binding belt 9 on the belt position of the side of the carton 8. At this time, the swing cover 81 of the box cover is also tightened by the binding belt 9 to prevent the swing cover 81 from turning upward and resetting. After the above-mentioned flap and belt operation, the carton 8 can be used to hold finished cigarettes. Since the staff does not need to manually flip the cover and belt the work, it can reduce manpower occupation and improve work efficiency. The operating speed of the automatic flap and belt can be kept stable, which can avoid the problem of suspension of the finished cigarette packing and supply operation due to the unstable flap and belt speed of the cigarette box, thereby improving the efficiency of the finished cigarette packing and supply operation.

[0068] The unfolding mechanism 3 in this embodiment is specifically described as follows:

[0069] First, the side of the swing cover 81 facing the inside of the carton 8 when the box cover is closed is defined as the inner side, and the unfolding mechanism 3 includes four flip modules corresponding to each swing cover 81 of the box cover, and the four flip modules are respectively used to push the corresponding swing cover 81 to rotate so that the swing cover 81 rotates to fit the outer side of the side plate of the carton 8. The flip module includes an active structure 33 abutting against the inner side of the corresponding swing cover 81, a longitudinal movement component 31 driving the active structure 33 to rise and fall, and a transverse movement component 32 driving the active structure 33 to deviate in the horizontal direction.

[0070] In this embodiment, one pair of longitudinal moving components 31 in relative positions is a linear motor installed on the frame 1, the mover of the linear motor slides in a controlled manner in the vertical direction, and the mover of the linear motor is also fixedly connected to a longitudinal moving frame 311, the transverse moving component 32 and the movable structure 33 are both installed on the longitudinal moving frame 311, and the other pair of longitudinal moving components 31 in relative positions is a power cylinder 321, the cylinder body of the power cylinder 321 is installed on the ground, and the position is relatively fixed to the frame 1. The piston rod of the power cylinder 321 is connected to the longitudinal moving frame 311, driving the longitudinal moving frame 311 to slide vertically. The movable structure 33 in this embodiment is a rod structure, the top of the movable structure 33 is rotatably connected to the longitudinal moving frame 311, the rotation axis of the movable structure 33 is parallel to the rotation axis of the corresponding rocker cover 81, and the bottom end of the movable structure 33 cooperates with the corresponding rocker cover 81 to push the corresponding rocker cover 81 to flip. The transverse movement component 32 is installed between the movable structure 33 and the longitudinal movement frame 311. The transverse movement component 32 in this embodiment uses a power cylinder 321. The cylinder body and piston rod of the power cylinder 321 are respectively hinged to the longitudinal movement frame 311 and the movable structure 33. When the power cylinder 321 is extended or retracted, the movable structure 33 can be driven to swing relative to the longitudinal movement frame 311. The swing trajectory of the bottom end of the movable structure 33 intersects with the projection of the rotation axis of the corresponding swing cover 81 on the same horizontal plane.

[0071] It should be understood that in order to control the horizontal displacement of the movable structure 33, the transverse movement component 32 can also adopt a linear drive mechanism that drives the movable structure 33 to slide in the horizontal direction. The linear drive mechanism is installed on the longitudinal movement frame 311, and the movable structure 33 only needs to be connected to the above-mentioned linear drive mechanism to use the linear drive mechanism to drive the movable structure 33 to shift in the horizontal direction.

[0072] When the lid of the carton 8 is closed, each flap 81 of the lid of the carton 8 to be flipped still remains coplanar with the adjacent side panels of the carton 8. It should be understood that in order for the movable structure 33 to smoothly push the flap 81 to be flipped, the trajectory of the bottom end of the movable structure 33 offset in the horizontal direction and the projection of the corresponding flap 81's rotation axis on the same horizontal plane should be in an intersecting relationship. When pushing the flap 81 to flip, it is also necessary to control the lifting of the movable structure 33 so that the flap 81 can be smoothly pushed against the outer side of the side panel of the carton 8. During the whole process, the transverse movement component 32 and the longitudinal movement component 31 cooperate with each other to drive the bottom end of the movable structure 33 to move, so that the flap 81 can be pushed to flip to fit the outer side of the side panel of the carton 8. The whole process is automatic and no manual flipping operation is required.

[0073] Specifically, since the movable structure 33 in this embodiment realizes lateral movement by rotation, the following conditions must also be met to smoothly push the swing cover 81 of the carton 8 cover against the outer side of the carton 8 side plate:

[0074] Before the lid of the carton 8 is opened, the bottom end of the movable structure 33 needs to be able to rise above the swing cover 81 to smoothly pass over the swing cover 81; when the movable structure 33 moves to the side of the corresponding swing cover 81 facing the inside of the carton 8, the bottom end of the movable structure 33 needs to move downward to below the top edge of the corresponding swing cover 81 to smoothly abut against the inner side of the corresponding swing cover 81. When the movable structure 33 pushes the swing cover 81 of the box lid to rotate, the bottom end of the movable structure 33 needs to move to the outside of the side plate of the carton 8 and be below the rotation axis of the corresponding swing cover 81 to push the corresponding swing cover 81 to swing to a state of fitting with the outer side of the side plate of the carton 8.

[0075] Furthermore, when the bottom end of the movable structure 33 contacts the inner side of the swing cover 81 and pushes the swing cover 81 to unfold, relative sliding will continue to occur between the bottom end of the movable structure 33 and the swing cover 81. If the movable structure 33 slides relative to the swing cover 81 through the sharp corner, the inner side of the swing cover 81 will be scratched. In order to avoid the above problems, the bottom end of the movable structure 33 in this embodiment is also connected to a cylindrical structure, the axis of the cylindrical structure is parallel to the rotation axis of the corresponding swing cover 81, the movable structure 33 contacts the swing cover 81 through the side of the cylindrical structure, and the side of the cylindrical structure is a smooth annular arc surface 331, the axis of the arc surface 331 is parallel to the rotation axis of the corresponding swing cover 81, and the movable structure 33 slides relative to the inner side of the corresponding swing cover 81 through the arc surface 331 of the cylindrical structure, ensuring that the inner side of the swing cover 81 is not scratched.

[0076] In addition, after the cover is flipped, each cover module of the unfolding mechanism 3 should be kept outside the carton 8 so as not to interfere with the subsequent strapping operation.

[0077] The strap mechanism 4 in this embodiment is specifically described as follows:

[0078] The strapping mechanism 4 includes four clamping modules 42 for clamping the strap 9 , a moving module 41 for driving the clamping modules 42 to move between the strap bracket 5 and the carton 8 , and a strap pulling module 43 for pulling the strap 9 wrapped around the side of the carton 8 away from the clamping module 42 .

[0079] The four clamping modules 42 in this embodiment are all installed on the bottom surface of the same plate body 411. The moving module 41 can make the four clamping modules 42 move synchronously by driving the plate body 411 to move. The four clamping modules 42 are arranged in the form of a rectangular array. Each clamping module 42 corresponds to a side edge between the side panels of the carton 8 to be covered. The strap 9 clamped by the four clamping modules 42 at the same time is in a rectangular ring shape that matches the carton covering area. The moving module 41 drives each clamping module 42 to move, so that each clamping module 42 approaches the corresponding side edge respectively and falls along the length direction of the side edge. The annular strap 9 clamped by the clamping module 42 can be accurately covered on the side of the carton 8, and the annular strap 9 can be used to tighten the swing cover 81 that has been turned over to fit the outer side of the side panel of the carton 8 to prevent the swing cover 81 from rotating and resetting.

[0080] It should be understood that in the above description of "the binding strap 9 is in a rectangular ring shape that fits the carton strapping area", the "carton strapping area" means that when the various swing flaps 81 of the lid of the carton 8 are swung to fit the outer side of the side panel of the carton 8, the sides of the four swing flaps 81 facing away from the carton 8 are combined to form a carton strapping area for the binding strap 9. "The binding strap 9 is in a rectangular ring shape that fits the carton strapping area" means that after the lid of the carton 8 is unfolded, when the annular binding strap 9 is put on the carton strapping area, the annular binding strap 9 fits the sides of the various swing flaps 81 facing away from the carton 8, thereby constraining the position of the swing flaps 81 so that the swing flaps 81 remain in contact with the outer side of the side panel of the carton 8 and cannot be rotated to reset.

[0081] Specifically, each clamping module 42 includes a clamping seat 421 located at the top and two vertically extending clamping sections connected to the bottom of the clamping seat 421 for clamping the strap 9. The two clamping sections are controlled to open and close in the horizontal direction to perform the action of clamping the strap 9 or putting down the strap 9. When the four clamping modules 42 clamp the same annular band 9, the clamping section of each clamping module 42 located on the inner side of the annular band 9 is named as the inner clamping section 422, and the clamping section located on the outer side of the annular band 9 is named as the outer clamping section 423. The inner clamping section 422 in this embodiment is fixed in position, and the outer clamping section 423 slides with the clamping seat 421 in a horizontal direction pointing to the inner clamping section 422. The clamping seat 421 is equipped with a clamping cylinder 424 for driving the outer clamping section 423 to slide back and forth. By controlling the outer clamping section 423 to slide close to or away from the inner clamping section 422, the inner clamping section 422 and the outer clamping section 423 can be opened and closed. However, it should be understood that in fact, only the inner clamping section 422 can be controlled to slide, or the inner clamping section 422 and the outer clamping section 423 can be controlled to slide at the same time, as long as the two clamping sections of the clamping module 42 can be relatively close to or away from each other.

[0082] In this embodiment, arc grooves are provided on the sides of the two clamping sections of the clamping module 42 that face each other. When the two clamping sections clamp the strap 9, the strap 9 can be embedded in the arc grooves, ensuring that the clamping module 42 can stably clamp the strap 9.

[0083] After the swing flaps 81 of the box cover of the carton 8 are unfolded by the unfolding mechanism 3 to fit the outer side surfaces of the side panels of the carton 8 , there is a gap between two adjacent swing flaps 81 at the side edges of the carton 8 . Each clamping module 42 corresponds to a side ridge of the carton 8. When the annular band 9 is put on the side of the carton 8 by using the above four clamping modules 42, the inner clamping section 422 of each clamping module 42 is against the corresponding side ridge of the carton 8, and the inner clamping section 422 of each clamping module 42 is located in the gap between two adjacent swing covers 81 and slides in the gap without contacting the carton band area. That is, the annular band 9 does not need to contact the inner side surface of the swing cover 81 through the inner clamping section 422. By reasonably designing the width or thickness of the inner clamping section 422, the band 9 clamped by the clamping module 42 can be directly fitted with the side of the swing cover 81 facing away from the carton 8. Therefore, the circumference of the band 9 only needs to be sufficient to tighten the swing cover 81 of the carton 8. There is no need to use a band 9 with a longer circumference, which can reduce the problem of the band 9 loosening. In addition, when the clamping module 42 moves downward along the corresponding side edge of the carton 8, the inner clamping section 422 of the clamping module 42 is always in the gap between two adjacent swing covers 81 and does not contact the swing covers 81 of the carton 8, so the swing covers 81 will not be scratched.

[0084] In addition, when the clamping module 42 slides downward along the side ridges of the carton 8 to put the strap 9 on the side of the carton 8, it is also necessary to accurately control the distance that the clamping module 42 slides downward. If the strap 9 clamped by the clamping module 42 moves downward and crosses the swing cover 81 of the carton 8, the strap 9 can only be put on a position lower than the swing cover 81 of the carton 8. However, in this case, the strap 9 cannot be used to tighten the swing cover 81. In order to avoid the above-mentioned problems, each clamping module 42 is also equipped with a limiting structure 425. When the clamping module 42 slides downward along the side ridges of the carton 8, the clamping module 42 abuts against the top opening of the carton 8 through the limiting structure 425, which can limit the distance that the strap 9 clamped by the clamping module 42 slides downward, so as to avoid putting the strap 9 on a position lower than the swing cover 81 of the carton 8.

[0085] An optional structural form of the above-mentioned limiting structure 425 is specifically introduced: the limiting structure 425 is a horizontal section integrally formed with the inner clamping section 422 (see the attached Figure 6 a), the horizontal section is located on the side of the inner clamping section 422 facing away from the outer clamping section 423, that is, when the clamping module 42 puts the strap 9 on the side of the carton 8, the horizontal section is located on the side of the inner clamping section facing the carton 8. In the process of the clamping module 42 putting the strap 9 on the side of the carton 8, as the clamping module 42 continues to slide downward, the bottom surface of the horizontal section abuts against the open edge of the top of the carton 8, which can prevent the clamping module 42 from sliding downward further, ensuring that the strap 9 accurately tightens the swing cover 81 of the box cover.

[0086] In addition, the limiting structure 425 can also be configured as follows: the limiting structure 425 is an extension section formed by the clamping seat 421 extending toward the inner side of the annular binding belt 9 (see the attached Figure 6 b) The extension section protrudes from the side of the inner clamping section 422 facing away from the outer clamping section 423, that is, when the clamping module 42 puts the strap 9 on the side of the carton 8, the extension section is located on the side of the inner clamp facing the carton 8. In actual design, it is only necessary to ensure that when the clamping module 42 puts the strap 9 on the side of the carton 8, the limiting structure 425 can abut against the open edge of the top of the carton 8 to limit the sliding distance of the clamping module 42.

[0087] In addition, the mobile module 41 in this embodiment is installed on the frame 1, and the mobile module 41 includes two mutually cooperating linear drive mechanisms to drive the clamping module 42 to move up and down and move in the horizontal direction. The linear drive mechanism can specifically adopt components such as linear guides, pressure cylinders and linear motors to realize the action process of driving the clamping module 42 to move between the strap bracket 5 and the carton 8 to be strapped. In addition, if necessary, a rotary driver such as a rotary cylinder, a servo motor and other components can be installed to adjust the angle of the mobile module 41. When the automatic flip-cover strapping device for finished cigarette boxes in this embodiment is actually installed, the mobile module 41 is reasonably configured according to the relative position relationship between the strap bracket 5 and the carton 8 to be strapped, ensuring that the clamping module 42 can move between the strap bracket 5 and the carton 8 to be strapped and complete the action of picking up the strap 9 and setting the strap 9.

[0088] In this embodiment, the belt mechanism 4 also has four belt-pulling modules 43, which are arranged around the outside of the carton 8. The belt-pulling modules 43 include a sliding seat 431 that slides in a controlled vertical direction. In this embodiment, a pressure cylinder is used to drive the sliding seat 431 to rise and fall in the vertical direction, but a screw module or a linear motor can also be used to drive the sliding seat 431 to rise and fall. The top surface of the sliding seat 431 is rotatably connected with a shifting block 432, which rotates around a vertical axis, and a rotation drive component 433 that drives the shifting block 432 to rotate is also installed on the sliding seat 431. The rotation drive component 433 is a motor or a rotary cylinder.

[0089] Specifically, the shift block 432 is rotatably connected to the sliding seat 431 through one end thereof, and the end of the shift block 432 rotatably connected to the sliding seat 431 is defined as the connection end, and the other end is defined as the free end. After the clamping module 42 puts the clamped strap 9 on the side of the carton 8, the rotation track of the free end of the shift block 432 intersects with the projection of the strap 9 on the same horizontal plane.

[0090] After the clamping module 42 puts the strap 9 on the side of the carton 8, the above-mentioned stripping module 43 is used to strip the strap 9 from the clamping module 42. First, the sliding seat 431 is controlled to rise, so that the stripping block 432 rises to a position higher than the strap 9; then the stripping block 432 is driven to rotate, so that the free end of the stripping block 432 rotates to the top of the strap 9; then the strap 9 is separated from the clamping module 42. In the process of separating the strap 9 from the clamping module 42, the two clamping sections of the clamping module 42 are first controlled to move away from each other and no longer clamp the strap 9, and then the sliding seat 431 and the stripping block 432 can be controlled to slide downward, and the free end of the stripping block 432 can be used to strip the strap 9 from between the two clamping sections of the clamping module 42; or the clamping module 42 can be controlled to move upward to separate from the carton 8, and the free end of the stripping block 432 can be used to prevent the strap 9 from moving with the clamping module 42, so that the strap 9 is separated from the upwardly moving clamping module 42.

[0091] In this embodiment, each belt-pulling module 43 corresponds to a clamping module 42. When the clamping module 42 puts the annular strap 9 on the side of the carton 8, the positions of the four belt-pulling modules 43 are adjacent to the corresponding clamping modules 42, and at this time, the clamping module 42 is also located on the rotation path of the free end of the corresponding shifting block 432. Then, the shifting block 432 is used to shift the strap 9 away from the clamping module 42. When the free end of the shifting block 432 is rotated to abut against the corresponding clamping module 42, the free end of the shifting block 432 is located above the strap 9, that is, the clamping module 42 is used to limit the rotation angle of the shifting block 432. When the shifting block 432 is rotated, the free end of the shifting block 432 can be conveniently and accurately suspended above the strap 9, which is convenient for control. The shifting block 432 can also be used to accurately shift the strap 9 away from the clamping module 42, and the shifting block 432 is not easy to stagger the strap 9 when rotating.

[0092] When the free end of the shift block 432 of the shifting module 43 rotates to the top of the strap 9, the shift block 432 is driven to slide downward. Since the position where the shift block 432 applies force to the strap 9 is adjacent to the corresponding clamping module 42, the strap 9 can be easily shifted away from the adjacent clamping module 42 without causing the strap 9 to be significantly bent or deformed. If the free end of the shift block 432 is used to prevent the strap 9 from moving upward so that the strap 9 is separated from the upward clamping module 42, since the free end of the shift block 432 is adjacent to the clamping module 42, the strap 9 is limited from the position adjacent to the clamping module 42 to ensure that the strap 9 is not easily displaced. When the clamping module 42 moves upward, it can be easily detached from the strap 9 limited by the adjacent shift block 432 to prevent the strap 9 from being dragged by the clamping module 42 to the open edge of the carton 8.

[0093] The strap bracket 5 in this embodiment is specifically described as follows:

[0094] The strap bracket 5 includes a horizontal platform 51 and four vertical poles 52 for pre-tensioning the ring strap 9 to a rectangular ring shape. The four poles 52 are arranged in a rectangular array, and each pole 52 corresponds to a clamping module 42. The ring strap 9 tensioned by the poles 52 is in a rectangular ring shape that fits the carton strapping area. When the clamping module 42 needs to pick up the ring strap 9 on the strap bracket 5, the four clamping modules 42 are controlled to move synchronously, so that each clamping module 42 can be easily moved to the position of the corresponding pole 52 and the strap 9 can be clamped from the corresponding pole 52.

[0095] Specifically, in order to facilitate the clamping module 42 to clamp the strap 9 from the corresponding vertical rod 52, the vertical rod 52 is provided with a through slot 521 that penetrates vertically on the side of the vertical rod 52 that abuts against the strap 9, and the through slot 521 divides the area where the vertical rod 52 contacts the strap 9 into two sections. When the clamping module 42 clamps the strap 9 from the position of the corresponding vertical rod 52, the inner clamping section 422 and the outer clamping section 423 of the clamping module 42 are first controlled to move away from each other and open, and the inner clamping section 422 of the clamping module 42 moves to the top of the through slot 521 of the corresponding vertical rod 52, and then each clamping module 42 is driven to move downward synchronously, and the inner clamping sections 422 of the clamping module 42 all slide downward along the corresponding through slot 521. After the bottom end of the inner clamping section 422 slides past the strap 9, the inner clamping section 422 and the outer clamping section 423 of the clamping module 42 are controlled to move closer to each other and close, so that the strap 9 can be clamped.

[0096] It should be understood that the inner clamping section 422 of the clamping module 42 in this embodiment is fixed in position, and the outer clamping section 423 slides in a controlled manner. When the clamping module 42 is moved, the moving position of the inner clamping section 422 can be accurately controlled, so that the inner clamping section 422 of each clamping module 42 can be accurately moved to the top of the through groove 521 of each corresponding vertical rod 52.

[0097] Specifically, the upright pole 52 in this embodiment is Fig.12 The angle steel shown in a comprises two integrally formed perpendicular metal sheets, and the cross section is L-shaped. The side ridges of the two metal sheets are in contact with the binding band 9, and the area enclosed between the two metal sheets and the binding band 9 can be regarded as the through slot 521 of the vertical rod 52. When the angle steel is used as the vertical rod 52 to tighten the annular binding band 9, each angle steel is in contact with the binding band 9 through the side ridges of the two metal sheets, and the through slot 521 between the two metal sheets can be inserted into the inner clamping section 422 of the clamping module 42.

[0098] In another embodiment, the vertical rod 52 can also be selected from Fig.12 The vertical rod body shown in b has a rectangular cross-section, and a through groove 521 extending vertically is provided on the side where the rod body contacts the strap 9. The through groove 521 vertically penetrates the rod body, and the through groove 521 divides the area where the rod body contacts the strap 9 into two sections. When the rod body is in contact with the annular strap 9 through the side where the through groove 521 is provided, the through groove 521 of the rod body can also be used for the inner clamping section 422 of the clamping module 42 to be inserted.

[0099] It should also be understood that after the inner clamping section 422 of the clamping module 42 is inserted downward into the through groove 521, the through groove 521 of the vertical rod 52 can also constrain the inner clamping section 422 of the clamping module 42, so that the inner clamping section 422 entering the through groove 521 can only slide downward along the through groove 521 and is not easily offset, so that the inner clamping section 422 of the clamping module 42 can be accurately inserted into the inner side of the annular strap 9.

[0100] See also Figures 7 to 10 The finished cigarette box automatic flip cover strapping device in this embodiment also includes a strap loading rack 6 and an automatic loader 7 that cooperate with the strap bracket 5. A large number of straps 9 to be transferred to the strap bracket 5 are temporarily stored on the strap loading rack 6. These straps 9 are also the straps 9 to be loaded. The automatic loader 7 is used to transfer the straps 9 to be loaded to the strap bracket 5 one by one for the clamping module 42 to clamp. The strap loading rack 6, the automatic loader 7 and the strap bracket 5 constitute a complete strap supply device. Among them:

[0101] There are two strap loading racks 6, which are respectively located on both sides of the strap bracket 5. The strap loading racks 6 include a base and a column 61 installed on the base. The column 61 is fixedly installed with two parallel cross bars 62 for hanging the strap 9 to be loaded on one side facing the strap bracket 5. The two cross bars 62 are installed in the horizontal direction, one end of the cross bar 62 extends toward the strap bracket 5, and the end of the cross bar 62 extending toward the strap bracket 5 is suspended. The two cross bars 62 simultaneously pass through the inner side of the annular strap 9 to be loaded to provide support for the annular strap 9. When the annular strap 9 is hung on the two cross bars 62, a section of the strap 9 between the two cross bars 62 is defined as a load-bearing section 91.

[0102] Before continuing to introduce the strap 9 supply device, the length direction of the cross bar 62 is defined as the feeding direction, and the horizontal direction perpendicular to the feeding direction is defined as the tensioning direction. The two strap feeding racks 6 are arranged side by side on both sides of the strap bracket 5 along the feeding direction.

[0103] In the improved embodiment of the strap loading rack 6, a conveyor belt assembly 63 is also installed on each crossbar 62, and the conveyor belt assembly 63 includes two pulleys 631 rotatably connected to the crossbar 62, a closed-loop belt 632 surrounding the two pulleys 631, and a motor driving the pulleys 631 to rotate. The two pulleys 631 are arranged side by side along the loading direction, and the rotation direction of the pulleys 631 is parallel to the tensioning direction. The crossbar 62 supports the strap 9 to be loaded through the belt 632 of the conveyor belt assembly 63, and the strap 9 is suspended on the part of the belt 632 with the outer side facing upward. In addition, the outer side of the belt 632 is also provided with a plurality of belt grooves 633 for the strap 9 to be inserted, and the belt grooves 633 are evenly arranged along the length direction of the belt 632, and each belt groove 633 penetrates the belt 632 along the width direction of the belt 632. The pulleys 631 of the two conveyor belt assemblies 63 rotate synchronously during operation, and the distribution positions of the belt grooves 633 in the two conveyor belt assemblies 63 along the length direction of the belt 632 always remain corresponding to each other. The two belt grooves 633 corresponding to each other in the two belts 632 are defined as a group. When the straps 9 are hung on the belts 632 of the two conveyor belt assemblies 63, each strap 9 is embedded in the two belt grooves 633 of the same group. The belt grooves 633 of the belt 632 can prevent the straps 9 from falling off, and at the same time, when multiple straps 9 are hung on the belt 632, the multiple straps 9 can be kept evenly arranged.

[0104] The conveyor belt assembly 63 can supply the suspended straps 9 toward the strap bracket 5, so that each suspended strap 9 can be supplied to the designated position one by one, and the clamp 72 of the automatic loader 7 can move to the above-mentioned designated position each time to clamp the strap 9. There is no need to change the distance that the clamp 72 needs to move to clamp the strap 9 next time after each clamping of the strap 9, which facilitates automatic control and is less likely to cause the clamp 72 to clamp empty straps or clamp multiple straps 9 at the same time.

[0105] The four vertical rods 52 of the strap bracket 5 are all arranged vertically, and the four vertical rods 52 are arranged in two rows along the feeding direction and in two columns along the tensioning direction. The upper surface of the platform 51 of the strap bracket 5 is kept horizontal, and the upper surface of the platform 51 is lower than the height position of the load-bearing section 91 of the annular strap 9. The platform 51 is provided with four through holes 511 for each vertical rod 52 to pass through, and the four through holes 511 are arranged in two rows and two columns along the feeding direction and the tensioning direction, and the vertical rod 52 passes through the through holes 511 in the vertical direction. Each through hole 511 has a residual space for the vertical rod 52 to slide in the tensioning direction, and the bottom surface of the platform 51 is installed with a double-degree-of-freedom displacement module 53 that drives each vertical rod 52 to slide in the vertical direction and the tensioning direction. When the vertical rod 52 is raised or lowered, the top of the vertical rod 52 can switch between a state higher than the upper surface of the platform 51 and a state lower than the upper surface of the platform 51; when the vertical rod 52 slides in the tensioning direction, the distance between the two vertical rods 52 in the same row can be changed. The above-mentioned dual-degree-of-freedom displacement module 53 includes a linear motor and a power cylinder 321, wherein the linear motor is connected to the bottom surface of the platform 51, the cylinder body of the power cylinder 321 is connected to the mover of the linear motor, and the piston rod of the power cylinder 321 is connected to the bottom end of the vertical rod 52, thereby driving the vertical rod 52 to rise and fall in the vertical direction and slide in the tensioning direction. In addition, the linear motor and the power cylinder 321 can also be replaced by a screw drive assembly or other linear drive.

[0106] The automatic feeder 7 includes two groups of clamps 72 for clamping the load-bearing section 91 of the strap 9 to be loaded and a loading displacement module 73 for driving the clamp 72 to slide back and forth between the strap loading rack 6 and the platform 51 along the loading direction. The two groups of clamps 72 are respectively responsible for clamping and pulling the straps 9 to be loaded hanging on the two strap loading racks 6. Both groups of clamps 72 are installed on the same sliding seat 71 that slides along the loading direction. The sliding seat 71 is installed on the frame 1 and slides with the frame 1. The loading displacement module 73 in this embodiment is a linear motor that drives the sliding seat 71 to slide back and forth along the loading direction. In addition, the sliding seat 71 is also equipped with a vertical cylinder that drives the clamp 72 to slide vertically. The vertical cylinder can be used to drive the clamp 72 to move up and down, and the height position of the clamp 72 can be adjusted to align the clamp 72 with the strap 9 to be loaded.

[0107] Specifically, each group of clamps 72 includes two clamps 72 arranged in parallel along the tensioning direction, and the clamps 72 include a clamping body 721 and two clamping jaws 722 movably connected to the clamping body 721. The clamping jaws 722 of the clamp 72 are located on the side of the clamping body 721 facing the strap loading rack 6. The two clamping jaws 722 are vertically parallel and controlled to open and close in the vertical direction to achieve the action of clamping and releasing the strap 9. The specific structure for driving the clamping jaws 722 to open and close needs to be selected according to the activity mode of the clamping jaws 722. If the clamping jaws 722 are rotatably connected to the clamping body 721, a rotary drive element such as a motor or a rotary cylinder is used; if the clamping jaws 722 are slidably matched with the clamping body 721, a linear drive device such as a linear motor, a pressure cylinder, and a screw drive module is used, which will not be described in detail here. It should also be noted that the height position of the opening and closing of the clamping jaws 722 of the clamp 72 corresponds to the height position of the load-bearing section 91 of the strap 9 to be loaded, so as to ensure that the load-bearing section 91 of the strap 9 to be loaded can be clamped smoothly.

[0108] After the two clamps 72 of the same group clamp the load-bearing section 91 of the strap 9 to be loaded, in the process of the clamps 72 sliding along the loading direction from the strap loading rack 6 toward the platform 51 of the strap bracket 5, the area where the part of the strap 9 clamped between the two clamps 72 slides along the clamps 72 is defined as the dragging area. For the above-mentioned dragging area, in the process of the four vertical rods 52 of the strap bracket 5 sliding along the tensioning direction, there is at least one group of vertical rods 52 distribution positions, which can make the four vertical rods 52 all located within the projection range of the dragging area on the top surface of the platform 51.

[0109] Before using the clamp 72 to drive the clamped loading strap 9 to move, first control the two vertical rods 52 in each row to slide closer in the tensioning direction, so that each vertical rod 52 enters the projection range of the dragging area on the top surface of the platform 51; then control the vertical rod 52 to descend, ensure that the top of the vertical rod 52 is not higher than the sliding track of the load-bearing section 91 of the strap 9, so as not to hinder the sliding of the load-bearing section 91 of the strap 9. If the top of the vertical rod 52 is lower than the top surface of the platform 51 of the strap bracket 5, the problem of hindering the sliding of the load-bearing section 91 of the strap 9 can be completely avoided. When loading, the clamp 72 holding the strap 9 slides from the strap loading rack 6 toward the platform 51 of the strap bracket 5, and controls each vertical rod 52 of each clamp 72 to rise immediately after the clamp 72 passes, so that the vertical rod 52 protrudes from the top surface of the platform 51 of the strap bracket 5. When the clamp 72 pulls the band 9 to move, the unclamped part of the band 9 is directly placed on the top surface of the platform 51. After the vertical rod 52 is raised, it can be inserted into the inner side of the ring band 9. If the top of the vertical rod 52 is higher than the sliding track of the load-bearing section 91 of the band 9 after it is raised, it can be ensured that it will be inserted into the inner side of the ring band 9. After all the vertical rods 52 are raised, the clamp 72 is controlled to release the ring band 9. After the ring band 9 falls on the top surface of the platform 51, each vertical rod 52 is located on the inner side of the ring band 9. At this time, the two vertical rods 52 in each row are controlled to slide away in the tensioning direction until the four vertical rods 52 slide to the preset position to tighten the ring band 9. The above-mentioned preset position of the vertical rod 52 should meet the following conditions: when the vertical rod 52 reaches the preset position, the four vertical rods 52 tighten the ring band 9 to a rectangular ring that fits the carton strap area. Subsequently, the clamping module 42 of the strap mechanism 4 moves to the position corresponding to the vertical rod 52 to clamp the strap 9. Since the preset position of the vertical rod 52 is fixed, the clamping module 42 of the strap mechanism 4 only needs to move to the fixed position to clamp the strap 9 each time. There is no need to adjust the displacement distance of the clamping module 42 each time the strap 9 is clamped, thereby facilitating automatic operation.

[0110] In addition, the clamp 72 drives the clamped strap 9 to move along the feeding direction. After the clamped portion of the strap 9 moves through each vertical rod 52, the two rows of vertical rods 52 are both located within the length range of the entire strap 9 along the feeding direction.

[0111] In this embodiment, the automatic loader 7 cooperates with the vertical pole 52 that can slide along the tensioning direction, so that the strap 9 can be automatically put on the side of the four vertical poles 52, thereby realizing automatic and continuous supply of the strap 9. At the same time, the strapping mechanism 4 can accurately pick up the strap 9 tensioned by the vertical pole 52, ensuring automatic and continuous operation of the strapping operation.

[0112] Since the two strap loading racks 6 are respectively arranged on both sides of the strap bracket 5, the automatic feeder 7 also has two groups of clamps 72, each corresponding to one strap loading rack 6, and the clamping claws 722 of the two groups of clamps 72 are respectively facing the two sides, and the clamping claws 722 of the two groups of clamps 72 are respectively responsible for clamping the straps 9 to be loaded suspended by the corresponding strap loading rack 6. There are two specific usages:

[0113] 1. The sliding seat 71 of the automatic loader 7 slides back and forth between the two strap loading racks 6 along the loading direction. When a group of clamps 72 of the automatic loader 7 clamps the strap 9 from the strap loading rack 6 on one side and transfers the strap 9 to the strap bracket 5, there is no need to return empty-handed. Another group of clamps 72 can be used to directly clamp the strap 9 from the strap loading rack 6 on the other side, which can improve the working efficiency of the automatic loader 7.

[0114] Second, the automatic feeder 7 uses a set of clamps 72 to continuously clamp the straps 9 on the corresponding strap loading rack 6 until all the straps 9 on the strap loading rack 6 are transferred, and then another set of clamps 72 is activated to continuously clamp the straps 9 on the corresponding strap loading rack 6. In this way, replacing the empty strap loading rack 6 will not interrupt the loading of the straps 9, ensuring that the automatic feeder 7 can maintain continuous loading, and the flap strapping operation will not be interrupted due to the interruption of the strap 9 loading.

[0115] In order to facilitate the replacement of the emptied strap loading rack 6, universal wheels are installed at the four corners of the bottom surface of the base of the strap loading rack 6, so that the strap loading rack 6 can be easily transferred and replaced to replenish the straps 9 to be loaded.

[0116] The present embodiment also discloses an automatic flip-cover and strapping system for finished cigarette boxes, comprising a carton assembly line 2 having a flip-cover and strapping station 21 and the above-mentioned automatic flip-cover and strapping device for finished cigarette boxes. The carton assembly line 2 is divided by the flip-cover and strapping station 21 into a first conveying section for conveying cartons 8 to be strapped and a second conveying section for conveying already strapped cartons 8. The above-mentioned automatic flip-cover and strapping device for finished cigarette boxes cooperates with the cartons 8 to be strapped at the flip-cover and strapping station 21.

[0117] On the carton production line 2, a stopper (not shown) is installed at the position corresponding to the flap-covering and strapping station 21, and the stopper is used to block the carton 8 to be strapped, so that the carton 8 to be strapped stops at the flap-covering and strapping station 21 and receives the flap-covering and strapping process. After the flap-covering and strapping process is completed, the stopper is released again, so that the strapped carton 8 continues to be conveyed forward.

[0118] It should be noted that in the automatic flap-covering system for finished cigarette boxes, it should be ensured that the cartons 8 to be covered and the cartons 8 already covered can move smoothly along the carton assembly line 2. Therefore, during the activity of the flap module, when the active structure 33 rises to the highest position, the flap module located on the moving path of the carton 8 avoids the moving track of the carton 8 to be covered as a whole, so as not to hinder the carton 8 from moving along the carton assembly line 2. Among them, the two flap modules located on both sides of the moving path of the carton 8 only need to control the lateral movement component 32 to drive the active structure 33 away from the carton assembly line 2; the two flap modules located on the moving path of the carton 8 need to rise to completely avoid the moving track of the carton 8.

[0119] In addition, the belt shifting modules 43 of the belt wrapping mechanism 4 are respectively located on both sides of the path along which the carton 8 to be wrapped moves along the carton assembly line 2. When the shifting block 432 of the belt shifting module 43 rotates away from the carton 8, the carton 8 passes between the shifting blocks 432 on both sides along the carton assembly line 2 without hindering the movement of the carton 8.

[0120] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0121] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A finished cigarette box automatic cover belt device, characterized in that: The machine comprises a frame and a strap bracket on which a ring-shaped strap is placed, wherein the frame is provided with an unfolding mechanism for flipping the swing cover of the carton cover to fit the outer side of the carton side plate, and a strapping mechanism for picking up the strap from the strap bracket and transferring the strap to the side of the carton, wherein: The unfolding mechanism comprises four flap modules corresponding to the swing flaps of the box cover, with the side of the swing flap facing the inside of the carton when the box cover is closed as the inner side, and the flap module comprises a movable structure abutting against the inner side of the corresponding swing flap, a longitudinal shift component driving the movable structure to rise and fall, and a transverse shift component driving the movable structure to deflect in the horizontal direction, and the deflection track of the movable structure driven by the transverse shift component intersects with the projection of the rotation axis of the corresponding swing flap on the same horizontal plane; The strapping mechanism comprises four clamping modules for clamping the straps, a moving module driving the clamping modules to transfer between the strap bracket and the carton, and a strap-pulling module for pulling the straps sleeved on the side of the carton away from the clamping module, the clamping module comprises a clamping seat and two vertical clamping sections connected below the clamping seat for clamping the straps, the two clamping sections are controlled to open and close in the horizontal direction, and the straps clamped by the clamping modules at the same time are in a rectangular ring shape that matches the strapping area of ​​the carton, the strap-pulling module is arranged next to the carton, and the strap-pulling module comprises a sliding seat that is controlled to slide vertically, a shifting block that is rotatably connected to the sliding seat, and a rotation driving assembly that drives the shifting block to rotate, when the strap clamped by the clamping module is sleeved on the outside of the carton, the rotation trajectory of at least one end of the shifting block intersects with the projection of the strap on the same horizontal plane; The strap bracket includes four vertical poles for pre-tensioning the annular strap to a rectangular ring shape. The annular strap tensioned by the vertical poles is in a rectangular ring shape that matches the carton strap area. The side of the vertical pole that abuts the strap is also provided with a vertical through groove for a clamping section of the corresponding clamping module to pass through.

2. The automatic cover-covering device for finished cigarette boxes according to claim 1, characterized in that: In the unfolding mechanism, the longitudinal movement assembly includes a vertically arranged linear motor and a longitudinal movement frame connected to the mover of the linear motor, the movable structure and the longitudinal movement frame are rotationally coordinated, and the rotation axis of the movable structure is parallel to the rotation axis of the corresponding rocker cover, and the transverse movement assembly includes a power cylinder connected between the movable structure and the longitudinal movement frame, and the cylinder body and piston rod of the power cylinder are respectively hinged to the longitudinal movement frame and the movable structure.

3. The automatic cover-covering device for finished cigarette boxes according to claim 1, characterized in that: A smooth arc surface is provided at the position where the movable structure abuts against the corresponding swing cover, and the axis of the arc surface is parallel to the rotation axis of the corresponding swing cover.

4. The automatic cover-covering device for finished cigarette boxes according to claim 1, characterized in that: When the clamping module clamps the annular band, the clamping section of the clamping module located on the inner side of the annular band is the inner clamping section. After the swing cover of the box lid is flipped over to fit the side of the carton, while the clamping module is putting the annular band on the side of the carton, the inner clamping section of the clamping module is located in the gap between two adjacent swing covers, and the annular band clamped by the clamping module is directly fit with the side of the swing cover facing away from the carton.

5. The automatic cover-covering and strapping device for finished cigarette boxes according to claim 1, characterized in that: When the clamping module clamps the annular band, the clamping section of the clamping module located inside the annular band is the inner clamping section. The part of the clamping module located inside the annular band is also provided with a limiting structure. When the clamping module puts the band on the side of the carton, the clamping module abuts against the top opening of the carton through the limiting structure to limit the maximum distance of the clamping module sliding toward the bottom of the carton. The limiting structure is an extension section formed by the clamping seat extending toward the inner side of the annular binding band, and the extension section protrudes from the side of the inner clamping section facing away from the outer clamping section; or The limiting structure is a horizontal section connected to the inner clamping section, and the horizontal section is located on a side of the inner clamping section facing away from the outer clamping section.

6. The automatic cover-covering and strapping device for finished cigarette boxes according to claim 1, characterized in that: There are four belt-pulling modules. When the clamping module sleeves the annular strap onto the side of the carton, each belt-pulling module is located adjacent to a clamping module.

7. The automatic cover-covering and strapping device for finished cigarette boxes according to claim 6, characterized in that: Each of the belt-pulling modules is matched with an adjacent clamping module. One end of the belt-pulling block is rotatably connected to the sliding seat around a vertical axis, and the other end of the belt-pulling block is a free end. The belt-pulling modules and clamping modules that are matched are configured as follows: In the process of pulling the strap on the side of the carton away from the clamping module, the height position of the pull block of the pull belt module is higher than the strap, and the clamping module is located on the rotation path of the free end of the corresponding pull block. When the pull block rotates until its free end abuts against the corresponding clamping module, the free end of the pull block is located above the strap.

8. The automatic cover-covering and strapping device for finished cigarette boxes according to claim 1, characterized in that: The finished product cigarette box automatic cover strapping device also includes a strap loading rack and an automatic loading device that cooperate with the strap bracket, wherein: The strap loading rack includes two horizontal and mutually parallel cross bars for hanging the straps to be loaded, the height positions of the two cross bars are consistent, one end of the cross bar extends toward the strap bracket and is suspended, the two cross bars pass through the inner side of the annular strap to be loaded, a section of the strap between the two cross bars is defined as a load-bearing section, the length direction of the cross bar is the loading direction, and the horizontal direction and perpendicular to the loading direction is the tensioning direction; The strap bracket includes a platform matched with the vertical pole, the top surface of the platform is lower than the position of the horizontal rod toward the support of the strap to be loaded, the platform is provided with through holes for each vertical pole to pass through in the vertical direction, the four through holes are arranged in two rows and two columns along the loading direction and the tensioning direction, and the through holes have a margin space for the vertical pole to slide in the tensioning direction, and the platform is also provided with a double-freedom displacement module for driving each vertical pole to slide in the vertical direction and the tensioning direction; The automatic feeder includes a clamp for clamping the load-bearing section of the strap to be loaded and a loading displacement module for driving the clamp to slide back and forth between the strap loading rack and the platform along the loading direction. At least two clamps for clamping a strap are arranged along the tensioning direction, and the height positions of the two clamps correspond to the height position of the load-bearing section of the strap to be loaded. In the process of the clamp sliding the strap along the loading direction and feeding it from the strap loading rack to the platform, the area through which the part of the strap clamped between the clamps moves as the clamp moves is defined as the dragging area, and when the four vertical poles of the strap bracket slide along the tensioning direction, there is at least one set of vertical pole distribution positions so that the four vertical poles are all located within the projection range of the dragging area on the top surface of the platform.

9. The automatic cover-covering and strapping device for finished cigarette boxes according to claim 8, characterized in that: Each of the cross bars is provided with a conveyor belt assembly, which includes two pulleys rotatably connected to the cross bars and a closed-loop belt wrapped around the two pulleys. The rotation direction of the pulleys is parallel to the tensioning direction, and the two pulleys are arranged in parallel along the loading direction. The cross bar supports the straps to be loaded through the belts of the conveyor belt assembly. A plurality of belt grooves for the straps to be embedded are provided on the outer side of the belts. The belt grooves are connected along the width direction of the belts, and the belt grooves of the two conveyor belt assemblies correspond to each other in the distribution positions along the length direction of the belts.

10. The automatic cover-covering and strapping device for finished cigarette boxes according to claim 8, characterized in that: There are two strap loading racks, which are respectively arranged on both sides of the strap bracket. There are two groups of clamps for the automatic loader, which are respectively used to clamp the straps to be loaded on the two strap loading racks.

11. The automatic cover-covering and strapping device for finished cigarette boxes according to claim 1, characterized in that: The four clamping modules of the strap mechanism are all connected to the same plate body, and the moving module is connected to the plate body, and drives the four clamping modules to move synchronously through the plate body.

12. An automatic cover-belting system for finished cigarette boxes, characterized in that: The invention comprises a carton production line with a flap-covering and strapping station and an automatic flap-covering and strapping device for finished cigarette boxes according to any one of claims 1 to 11, wherein the automatic flap-covering and strapping device for finished cigarette boxes cooperates with the carton to be strapped at the flap-covering and strapping station. For the cartons to be taped that move through the flap-capping station, the belt-pulling modules of the strapping mechanism are respectively located on both sides of the path along which the carton to be taped moves along the carton assembly line; when the active structure of the flap module is raised to the highest position, the flap module located on the carton moving path as a whole avoids the moving trajectory of the carton to be taped.

13. The automatic cover-covering and strapping system for finished cigarette boxes according to claim 12, characterized in that: The flap-covering and strapping station of the carton assembly line is provided with a blocker, and the blocker is located on the path where the cigarette box moves along the carton assembly line, so as to control the carton to be strapped to stop accurately at the flap-covering and strapping station.

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