A full-range cigarette case unpacking system and its unpacking method

Abstract

The present invention discloses a full - specification case - opening system for cigarette cartons and its case - opening method. The case - opening system includes a transmission line, along the conveying direction of the transmission line, a lower cover unfolding mechanism, an upper cover unfolding mechanism, a clamping side - ear opening mechanism and a centering mechanism are successively installed. On both sides of the centering mechanism, a cigarette pushing mechanism and a buffer belt conveyor are respectively installed. A guiding stop bar is fixedly installed on one side of the transmission line close to the cigarette pushing mechanism. The present invention can realize the case - opening work of cigarette cartons with different sizes, reduce labor and material resources, reduce the types of equipment, improve the system compatibility and work efficiency at the same time. Meanwhile, the clamping range of the two - way clamping mechanism in the lower cover unfolding mechanism and the upper cover unfolding mechanism of the present invention is increased, and the relationship of the travel multiple of the movable pulley and the fixed pulley is also adopted in the descending centering mechanism (108), so that the types of cigarette carton sizes that the two mechanisms can adapt to in the horizontal and vertical directions are increased.

Description

Technical Field

[0001] The invention relates to a full-quality standard cigarette box opening system and a box opening method thereof, belonging to the technical field of full-quality standard cigarette box opening. Background Art

[0002] Since the size of standard cigarettes is fixed, the old box openers are designed to accommodate standard cigarettes. With the development of the tobacco industry, various slim cigarettes and special-shaped cigarettes have emerged, which has put forward new functional requirements for box openers. The length, width and height of special-shaped cigarettes are much different from those of standard cigarettes. Traditional box openers are no longer suitable for opening boxes of a wide variety of cigarettes.

[0003] If different sizes of cigarette cases need to be compatible, the unpacking mechanism needs to be able to automatically position cigarette cases of different sizes, and the cigarette push plate of the cigarette push mechanism also needs to be able to automatically adjust and adapt to the size of the cigarette case. In this way, it is urgent to design a new unpacking system for all-grade cigarette cases. Summary of the invention

[0004] The object of the present invention is to provide a full-size cigarette box unpacking system and a method thereof, so as to realize the unpacking of cigarette boxes of different sizes, reduce manpower and material resources, reduce the types of equipment, and at the same time improve system compatibility and work efficiency.

[0005] The technical solution of the present invention is a full-grade cigarette box opening system, including a transmission line, along the conveying direction of the transmission line are sequentially installed a lower cover unfolding mechanism, an upper cover unfolding mechanism, a clamping and opening side ear mechanism and a centering mechanism, a cigarette pushing mechanism and a buffer belt conveyor are respectively installed on both sides of the centering mechanism, and a guide baffle is fixedly installed on the side of the transmission line close to the cigarette pushing mechanism.

[0006] Furthermore, the lower cover deployment mechanism and the upper cover deployment mechanism have the same structure, both of which include a gantry, a lifting frame, a spiral elevator, a lifting motor, a bidirectional clamping mechanism, a descending centering mechanism and a cover deployment device. A first linear guide rail is symmetrically fixedly installed on the gantry, and a lifting frame is slidably connected between the first linear guide rails. Two spiral elevators are symmetrically installed on the top of the gantry, and the lifting rods of the two spiral elevators are hinged to the lifting frame. The two spiral elevators are connected by a horizontal transmission shaft. A lifting motor is fixedly installed on one side of one of the spiral elevators, and the output shaft of the lifting motor is connected to the input shaft of the spiral elevator through a sprocket mechanism. A bidirectional clamping mechanism and a descending centering mechanism are installed on the lifting frame, and a cover deployment device is installed on the bidirectional clamping mechanism.

[0007] Furthermore, the two-way clamping mechanism includes second linear guide rails symmetrically fixed at both ends of the lifting frame. Transverse plates are slidably connected to the second linear guide rails at both ends. Clamping arms are fixedly connected to the bottoms of the transverse plates. A cover unfolding device is fixedly connected to the lower ends of the clamping arms. A cylinder bracket is fixedly installed on the lifting frame and between the transverse plates at both ends. A long clamping cylinder and a short clamping cylinder are respectively fixedly connected to the cylinder bracket. The telescopic rods of the long clamping cylinder and the short clamping cylinder are respectively in transmission connection with the transverse plates at both ends.

[0008] Furthermore, the descending centering mechanism includes a horizontal support plate fixedly connected to the lifting frame. A pair of guide sleeves are fixedly installed on the horizontal support plate. Guide posts are slidably connected in the guide sleeves. A protective cover is fixedly connected to the lower ends of the guide posts. A photoelectric detection switch is fixedly installed in the protective cover. A trigger rod corresponding to the photoelectric detection switch is slidably connected to the bottom of the protective cover. A sprocket A is rotatably connected to the top of the horizontal support plate. A sprocket B is rotatably connected to the lifting frame. A linkage chain is connected between the sprocket A and the sprocket B. One end of the linkage chain is fixedly connected to the protective cover, and the other end is fixedly connected to the gantry. A gas spring is also fixedly connected to the horizontal support plate. The telescopic rod of the gas spring passes through the horizontal support plate and is fixedly connected to the top of the protective cover.

[0009] Furthermore, the cover unfolding device includes a connecting plate fixedly connected to the clamping arm. A cutter unfolding cylinder is fixedly connected to the top of the connecting plate. Two chutes are fixedly installed in parallel on the upper part of the connecting plate. An upper rack and a lower rack are respectively slidably connected in the two chutes. A synchronous gear is rotatably connected to the connecting plate and between the upper rack and the lower rack. The synchronous gear is simultaneously engaged with the upper rack and the lower rack. A left movable plate and a right movable plate are respectively fixedly connected to the upper rack and the lower rack. The telescopic rod of the cutter unfolding cylinder is in transmission connection with the left movable plate. Cutter lifting cylinders are symmetrically fixedly installed at the upper ends of the left movable plate and the right movable plate. Third linear guide rails are symmetrically fixedly installed at the lower ends of the left movable plate and the right movable plate. A cutter mounting seat is slidably connected to the third linear guide rails. The telescopic rod of the cutter lifting cylinder is in transmission connection with the cutter mounting seat. A cutter is fixedly connected to the cutter mounting seat. A smoke pressing plate and a suction cup telescopic cylinder are respectively fixedly connected to the lower part of the connecting plate. A cover suction cup is fixedly connected to the telescopic rod of the suction cup telescopic cylinder.

[0010] Further, the clamping and opening side ear mechanism comprises a vertical frame and a fourth linear guide symmetrically fixedly installed on the upper part of the vertical frame, the fourth linear guide being slidably connected with a lifting bracket, a lifting slide cylinder being fixedly installed between the fourth linear guides, and the slide of the lifting slide cylinder is fixedly connected to the lifting bracket, a fifth linear guide being fixedly connected to the lifting bracket, a left sliding seat and a right sliding seat being slidably connected at both ends of the fifth linear guide, and at the same time, a left long cylinder and a right short cylinder are fixedly installed on the lifting bracket, respectively, the telescopic rods of the left long cylinder and the right short cylinder are transmission connected to the left sliding seat and the right sliding seat respectively, a rotating cylinder is fixedly connected to the bottom of the left sliding seat and the right sliding seat, a curved rod is fixedly connected to the rotating table of the rotating cylinder, a side ear suction cup is fixedly connected to the lower end of the curved rod, a pushing plate is also fixedly connected to the left sliding seat, a side ear pressing cylinder is fixedly connected to the middle part of the vertical frame, and a side ear pressing rod is fixedly connected to the telescopic rod of the side ear pressing cylinder.

[0011] Furthermore, the clamping and centering mechanism includes an L-shaped frame and a sixth linear guide rail symmetrically fixed on the top of the L-shaped frame, a left sliding seat and a right sliding seat are slidably connected to the two ends of the sixth linear guide rail respectively, a scissors telescopic arm is connected between the left sliding seat and the right sliding seat, a cylinder mounting plate is fixedly connected on the sixth linear guide rail and between the left sliding seat and the right sliding seat, a cigarette clamping cylinder is fixedly connected to the cylinder mounting plate, and the telescopic rod of the cigarette clamping cylinder is transmission-connected to the left sliding seat, a pair of vertical guide rods and a cigarette clamping plate lifting cylinder are slidably connected to the left sliding seat and the right sliding seat, a cigarette clamping plate is fixedly connected to the lower end of the vertical guide rod, and the telescopic rod of the cigarette clamping plate lifting cylinder is transmission-connected to the cigarette clamping plate.

[0012] Furthermore, the cigarette pushing mechanism includes a cigarette pushing frame and a smoke pushing cylinder fixed on the top of the cigarette pushing frame. Two cigarette pushing rods are symmetrically slidably connected to the top of the cigarette pushing frame. A cigarette pushing plate assembly is fixedly connected to the ends of the two cigarette pushing rods, and the telescopic rod of the smoke pushing cylinder is transmission-connected to the cigarette pushing plate assembly.

[0013] Furthermore, the cigarette pushing plate assembly includes a cigarette pushing mounting plate fixedly connected to the telescopic rods of two cigarette pushing rods and a cigarette pushing cylinder simultaneously. On both sides of the cigarette pushing mounting plate, width expansion cylinders are symmetrically and fixedly connected. On the telescopic rods of the width expansion cylinders, width expansion plates are fixedly connected. On the inner side of the cigarette pushing mounting plate, seventh linear guide rails are symmetrically and fixedly connected. On the seventh linear guide rails, height adjustment plates are slidably connected. On the top of the height adjustment plates, height expansion plates are fixedly connected. In the middle of the cigarette pushing mounting plate, a sprocket and chain mechanism is installed. On the chain of the sprocket and chain mechanism, a connecting piece is fixedly connected, and the connecting piece is fixedly connected to the height adjustment plate. On the cigarette pushing rack, a height adjustment transmission shaft is rotatably connected. On the cigarette pushing rack and at one end of the height adjustment transmission shaft, a height adjustment motor is fixedly installed, and the output shaft of the height adjustment motor is drivingly connected to the end of the height adjustment transmission shaft. The other end of the height adjustment transmission shaft is drivingly connected to the sprocket and chain mechanism.

[0014] Meanwhile, the present invention also provides an unpacking method based on the above-mentioned all-specification cigarette case unpacking system, including the following steps:

[0015] Step 1: First, convey the cigarette case along the transmission line. When the cigarette case is conveyed to the station where the lower cover unfolding mechanism or the upper cover unfolding mechanism is located, stop the conveyance. At this time, open the lower cover and the upper cover of the cigarette case through the lower cover unfolding mechanism and the upper cover unfolding mechanism respectively. When opening the lower cover or the upper cover of the cigarette case, use the cover unfolding device on the lower cover unfolding mechanism or the upper cover unfolding mechanism to press the upper cover or the lower cover on both sides of the cigarette case, and then use the cover suction cup to suck the lower cover or the upper cover of the cigarette case and pull it outwards to form a certain gap. At this time, insert two cutting knives into the gap and make the two cutting knives expand left and right simultaneously to cut the tape between the upper cover or the lower cover and the cigarette case, thus completing the work of unfolding the upper cover or the lower cover.

[0016] Step 2: After unfolding, under the action of the guiding stop rods on the side of the transmission line, the unfolded upper cover or lower cover will remain in the unfolded state during the subsequent conveyance process. When the cigarette case is conveyed to the station where the side ear opening and clamping mechanism is located, stop the conveyance. At this time, use the side ear suction cup on the side ear opening and clamping mechanism to suck the side ear of the cigarette case and pull it outwards to open the side ear of the cigarette case. Then, use the side ear pressing rod to press the pulled side ear. Since the guiding stop rods on the transmission line are connected to the side ear pressing rod, the side ears of the cigarette case also remain in the unfolded state during the conveyance process.

[0017] Step 3: When the cigarette case with the upper cover, lower cover, and side ears all opened is conveyed to the clamping and centering mechanism, the clamping and centering mechanism symmetrically contracts inward through the cigarette clamping plates on both sides, so that the cigarette case is located at the midline position of the cigarette pushing mechanism. At this time, adjust the height and left - right width of the cigarette pushing plate assembly according to the size of the cigarette case to ensure that the cigarette pushing plate assembly can push out the cigarette stack in the cigarette case at one time. After the cigarette pushing plate assembly is adjusted, the cigarette pushing plate assembly on the cigarette pushing mechanism extends, pushes the cigarette stack in the cigarette case into the buffer belt conveyor, and finally the cigarette stack is distributed and exits the factory by the buffer belt conveyor.

[0018] Due to the adoption of the above - mentioned technical solution, the advantages of the present invention are as follows: The present invention can realize the unpacking work of cigarette cases of different sizes of piece cigarettes, reduce labor and material resources, reduce the types of equipment, and at the same time improve the system compatibility and work efficiency. At the same time, in the lower cover unfolding mechanism and the upper cover unfolding mechanism of the present invention, the clamping range of the bidirectional clamping mechanism is increased, and the dynamic pulley and fixed pulley stroke multiple relationship is also adopted in the descending centering mechanism, so that the types of cigarette case sizes that the two mechanisms can adapt to in the horizontal and vertical directions are increased; similarly, the height and left - right width of the cigarette pushing plate assembly of the cigarette pushing mechanism can be adjusted to ensure that the cigarette pushing plate assembly can push out the cigarette stack in the cigarette case at one time to meet the cigarette pushing work of cigarette cases of different sizes. Brief Description of the Drawings

[0019] Figure 1 is the three - dimensional view of the structural schematic diagram of the present invention;

[0020] Figure 2 is the front view of the structural schematic diagram of the present invention;

[0021] Figure 3 is the front view of the structural schematic diagram of the lower cover unfolding mechanism;

[0022] Figure 4 is Figure 3 the three - dimensional view of

[0023] Figure 5 is Figure 4 the partial structural schematic diagram of

[0024] Figure 6 is Figure 5 the three - dimensional view of

[0025] Figure 7 is the three - dimensional view of the structural schematic diagram of the bidirectional clamping mechanism;

[0026] Figure 8 is the three - dimensional view of the structural schematic diagram of the descending centering mechanism;

[0027] Figure 9 is the three - dimensional view of the structural schematic diagram of the cover unfolding device;

[0028] Figure 10It is the front view of the structural schematic diagram of the capping unfolding device;

[0029] Figure 11 It is Figure 10 the right view of;

[0030] Figure 12 It is the front view of the structural schematic diagram of the upper capping unfolding mechanism;

[0031] Figure 13 It is the front view of the structural schematic diagram of the clamping and opening side ear mechanism;

[0032] Figure 14 It is Figure 13 the left view of;

[0033] Figure 15 It is Figure 13 the three-dimensional view of;

[0034] Figure 16 It is the three-dimensional view of the structural schematic diagram of the centering mechanism;

[0035] Figure 17 It is Figure 16 the partial structural schematic diagram of;

[0036] Figure 18 It is the three-dimensional view of the structural schematic diagram of the cigarette pushing mechanism;

[0037] Figure 19 It is Figure 18 the bottom view of;

[0038] Figure 20 It is the external structural schematic diagram of the cigarette pushing plate assembly;

[0039] Figure 21 It is the first-layer internal structural schematic diagram of the cigarette pushing plate assembly;

[0040] Figure 22 It is the second-layer internal structural schematic diagram of the cigarette pushing plate assembly;

[0041] Figure 23 It is the third-layer internal structural schematic diagram of the cigarette pushing plate assembly;

[0042] Figure 24 It is the structural schematic diagram when the centering mechanism and the cigarette pushing mechanism are working. Specific embodiments

[0043] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the drawings and embodiments.

[0044] Embodiment of the present invention: The structural schematic diagram of the full-specification piece cigarette unpacking system is as shown in Figure 1 and Figure 2As shown, it includes a transmission line 1, along the conveying direction of the transmission line 1 are sequentially installed a lower cover unfolding mechanism 2, an upper cover unfolding mechanism 3, a clamping and side ear opening mechanism 4 and a clamping and centering mechanism 7, on both sides of the clamping and centering mechanism 7 are respectively installed a cigarette pushing mechanism 6 and a buffer belt conveyor 8, and on the side of the transmission line 1 close to the cigarette pushing mechanism 6 is fixedly installed a guide baffle rod 5.

[0045] See also Figures 3 - 6 The lower cover unfolding mechanism 2 and the upper cover unfolding mechanism 3 have the same structure, and both include a door frame 101, a lifting frame 103, a spiral lift 104, a lifting motor 105, a bidirectional clamping mechanism 106, a descending centering mechanism 108 and a cover unfolding device 109. The first linear guide rails 102 are symmetrically fixedly installed on the door frame 101, and the lifting frame 103 is slidably connected between the first linear guide rails 102. Two spiral lifts 104 are symmetrically installed on the top of the door frame 101, and the two spiral lifts The lifting rod of the machine 104 is hinged to the lifting frame 103, and the two spiral elevators 104 are connected by a horizontal transmission shaft 107. A lifting motor 105 is fixedly installed on one side of one of the spiral elevators 104, and the output shaft of the lifting motor 105 is connected to the input shaft of the spiral elevator 104 through a sprocket mechanism. A two-way clamping mechanism 106 and a descending centering mechanism 108 are installed on the lifting frame 103, and a capping unfolding device 109 is installed on the two-way clamping mechanism 106.

[0046] See also Figure 7 The bidirectional clamping mechanism 106 includes a second linear guide rail 1061 symmetrically fixed at both ends of the lifting frame 103, and a transverse plate 1062 is slidably connected to the second linear guide rail 1061 at both ends, a clamping arm 1065 is fixedly connected to the bottom of the transverse plate 1062, and a capping unfolding device 109 is fixedly connected to the lower end of the clamping arm 1065. A cylinder bracket 1066 is fixedly installed on the lifting frame 103 and located between the transverse plates 1062 at both ends, and a long clamping cylinder 1063 and a short clamping cylinder 1064 are fixedly connected to the cylinder bracket 1066, and the telescopic rods of the long clamping cylinder 1063 and the short clamping cylinder 1064 are respectively transmission-connected to the transverse plates 1062 at both ends.

[0047] See also Figure 8The descending centering mechanism 108 includes a horizontal support plate 1081 fixedly connected to the lifting frame 103, a pair of guide sleeves 1082 fixedly installed on the horizontal support plate 1081, a guide column 1083 slidably connected in the guide sleeve 1082, a protective cover 1088 fixedly connected at the lower end of the guide column 1083, a photoelectric detection switch 1086 fixedly installed in the protective cover 1088, a trigger rod 1087 corresponding to the photoelectric detection switch 1086 slidably connected at the bottom of the protective cover 1088, and a horizontal support plate 1081 fixedly connected to the lifting frame 103. A sprocket A1089 is rotatably connected to the top of 1081, a sprocket B1090 is rotatably connected to the lifting frame 103, and a linkage chain 1085 is connected between the sprocket A1089 and the sprocket B1090. One end of the linkage chain 1085 is fixedly connected to the protective cover 1088, and the other end is fixedly connected to the door frame 101. A gas spring 1084 is also fixedly connected to the horizontal support plate 1081, and the telescopic rod of the gas spring 1084 passes through the horizontal support plate 1081 and is fixedly connected to the top of the protective cover 1088.

[0048] See also Figures 9 - 11 The capping and unfolding device 109 comprises a connecting plate 1091 fixedly connected to the clamping arm 1065, a cutter unfolding cylinder 1093 fixedly connected to the top of the connecting plate 1091, two slide grooves 1104 fixedly installed in parallel on the upper part of the connecting plate 1091, an upper rack 1092 and a lower rack 1099 are slidably connected in the two slide grooves 1104, a synchronous gear 1096 is rotatably connected on the connecting plate 1091 and located between the upper rack 1092 and the lower rack 1099, and the synchronous gear 1096 is meshed with the upper rack 1092 and the lower rack 1099 at the same time, a left movable plate 1097 and a right movable plate 1095 are fixedly connected to the upper rack 1092 and the lower rack 1099, respectively, and the cutter unfolding cylinder 1093 is fixedly installed on the upper part of the connecting plate 1091. The telescopic rod of 93 is transmission connected with the left movable plate 1097, and the cutter lifting cylinder 1098 is symmetrically fixedly installed on the upper ends of the left movable plate 1097 and the right movable plate 1095, and the third linear guide rail 1106 is symmetrically fixedly installed on the lower ends of the left movable plate 1097 and the right movable plate 1095, and the cutter mounting seat 1105 is slidably connected on the third linear guide rail 1106, and the telescopic rod of the cutter lifting cylinder 1098 is transmission connected with the cutter mounting seat 1105, and the cutter 1101 is fixedly connected to the cutter mounting seat 1105, and the smoke pressing plate 1100 and the suction cup telescopic cylinder 1094 are respectively fixedly connected to the lower part of the connecting plate 1091, and the capping suction cup 1102 is fixedly connected to the telescopic rod of the suction cup telescopic cylinder 1094.

[0049] The working principle of the lower cover unfolding mechanism 2 is as follows:

[0050] When the cigarette carton reaches the station of the lower cover unfolding mechanism 2, the lifting motor 105 drives the screw elevator 104 to rotate, causing the lowering centering mechanism 108 on the lifting frame 103 to descend until the trigger rod 1087 on the lowering centering mechanism 108 contacts the top of the cigarette carton. At this time, the photoelectric detection switch 1086 is triggered and sends a trigger signal to the PLC control system, and the PLC control system starts to orderly control each mechanism to execute actions. At this time, the transmission line 1 and the lifting motor 105 stop working, so that the cigarette carton stays directly below the lower cover unfolding mechanism 2. Then the long clamping cylinder 1063 acts, causing the cover unfolding device 109 on the left side to move closer to the cover unfolding device 109 on the right side until the pressing plates 1100 on the two cover unfolding devices 109 press the upper covers on both sides of the cigarette carton from both sides. Then the sucker telescopic cylinder 1094 extends, and the cover sucker 1102 sucks the lower cover of the cigarette carton and pulls it out by a gap of 5-10 mm. At this time, the cutter 1101 is at the highest position and in the central position of the cover unfolding device 109. After the cover sucker 1102 pulls out the lower cover, the cutter lifting cylinder 1098 immediately extends, causing the cutter 1101 to insert into the gap between the lower cover and the cigarette carton. At this time, the cutter unfolding cylinder 1093 also extends, causing the two cutters 1101 to separate to both sides and cut the tape between the lower cover and the cigarette carton, thus completing the action of unfolding the lower cover.

[0051] In addition, since the lowering centering mechanism 108 is connected to the gantry 101 through the linkage chain 1085, under the action of the sprocket A 1089 and the sprocket B 1090, a stroke multiple relationship is formed between the lifting frame 103 and the lowering centering mechanism 108, that is: the distance that the lifting frame 103 descends is exactly twice the distance that the lowering centering mechanism 108 descends. Since the cover unfolding device 109 is fixed below the lifting frame 103, when the trigger rod 1087 at the lower end of the lowering centering mechanism 108 contacts the top of the cigarette carton, the pressing plate 1100 of the cover unfolding device 109 just reaches the position of the upper cover of the cigarette carton.

[0052] See Figure 12 , the structure and working principle of the upper cover unfolding mechanism 3 are the same as those of the lower cover unfolding mechanism 2, but the upper cover and the lower cover of the cigarette carton are symmetrically arranged. Therefore, the cover sucker 1102 on the upper cover unfolding mechanism 3 is arranged above the pressing plate 1100 and the cutter 1101.

[0053] See Figures 13 - 15The clamping and opening side ear mechanism 4 includes a vertical frame 401 and a fourth linear guide 409 symmetrically fixedly installed on the upper part of the vertical frame 401, and a lifting bracket 406 is slidably connected to the fourth linear guide 409. A lifting slide cylinder 411 is fixedly installed between the fourth linear guide 409, and the slide of the lifting slide cylinder 411 is fixedly connected to the lifting bracket 406. A fifth linear guide 413 is fixedly connected to the lifting bracket 406, and a left sliding seat 414 and a right sliding seat 415 are respectively slidably connected at both ends of the fifth linear guide 413. At the same time, a left long cylinder 407 is respectively fixedly installed on the lifting bracket 406 And the right short cylinder 408, the telescopic rods of the left long cylinder 407 and the right short cylinder 408 are respectively connected to the left sliding seat 414 and the right sliding seat 415 for transmission, the rotating cylinder 405 is fixedly connected to the bottom of the left sliding seat 414 and the right sliding seat 415, the curved rod 410 is fixedly connected to the rotating table of the rotating cylinder 405, the side ear suction cup 403 is fixedly connected to the lower end of the curved rod 410, and the thrust plate 404 is also fixedly connected to the left sliding seat 414, and the side ear pressing cylinder 412 is fixedly connected to the middle part of the vertical frame 401, and the side ear pressing rod 402 is fixedly connected to the telescopic rod of the side ear pressing cylinder 412.

[0054] When the cigarette box reaches the clamping and opening side ear mechanism 4 station, first the push plate 404 will find the front end position of the cigarette box, the long cylinder 407 on the left side will be actuated, and the cigarette box will be pushed backwards by the push plate 404, and the cigarette box will be positioned to the middle position of the clamping and opening side ear mechanism 4 by the photoelectric switch, and then the lifting slide cylinder 411 will control the side ear suction cups 403 on both sides to descend, and the rotating cylinder 405 will be actuated to make the side ear suction cups 403 turn to the side ear position of the cigarette box and suck the side ear of the cigarette box. At this time, the rotating cylinder 405 moves in the opposite direction to open the side ear of the cigarette box, and finally the side ear pressing cylinder 412 will be actuated to make the side ear pressing rod 402 press the side ear, and then the suction cup will be released and rise to reset. Afterwards, because the guide stop rod 5 on the transmission line 1 is connected with the side ear pressing rod 402, the side ear of the cigarette box is also in the unfolded state during the transportation process.

[0055] See also Figures 16 - 17, the clamping and centering mechanism 7 includes an L-shaped frame 701 and symmetrically fixed sixth linear guide rails 702 at the top of the L-shaped frame 701. A left sliding seat 710 and a right sliding seat 706 are respectively slidably connected to both ends of the sixth linear guide rail 702. A scissor telescopic arm 709 is connected between the left sliding seat 710 and the right sliding seat 706. A cylinder mounting plate 703 is fixedly connected to the sixth linear guide rail 702 and located between the left sliding seat 710 and the right sliding seat 706. A cigarette clamping cylinder 705 is fixedly connected to the cylinder mounting plate 703, and the telescopic rod of the cigarette clamping cylinder 705 is in transmission connection with the left sliding seat 710. A pair of vertical guide rods 708 and a cigarette clamping plate lifting cylinder 707 are slidably connected to both the left sliding seat 710 and the right sliding seat 706. A cigarette clamping plate 704 is fixedly connected to the lower end of the vertical guide rod 708, and the telescopic rod of the cigarette clamping plate lifting cylinder 707 is in transmission connection with the cigarette clamping plate 704.

[0056] When the cigarette case with the upper cover, lower cover, and side ears all opened is conveyed to the station where the clamping and centering mechanism 7 is located, the cigarette clamping plate lifting cylinder 707 drives the cigarette clamping plates 704 on both sides to descend. Then the cigarette clamping cylinder 705 acts, causing the cigarette clamping plates 704 on both sides to contract inward simultaneously, so that the cigarette case is located at the midline position of the cigarette pushing mechanism 6, facilitating the cigarette pushing mechanism 6 to push out the cigarette stack in the cigarette case.

[0057] See Figures 18 - 19 , the cigarette pushing mechanism 6 includes a cigarette pushing frame 601 and a cigarette pushing cylinder 603 fixed at the top of the cigarette pushing frame 601. Two cigarette pushing rods 602 are symmetrically slidably connected to the top of the cigarette pushing frame 601. A cigarette pushing plate assembly 605 is fixedly connected to the ends of the two cigarette pushing rods 602, and the telescopic rod of the cigarette pushing cylinder 603 is in transmission connection with the cigarette pushing plate assembly 605.

[0058] The main operation of the cigarette pushing mechanism 6 is to drive the cigarette pushing plate assembly 605 to move back and forth through the cigarette pushing cylinder 603, so that the cigarette pushing plate assembly 605 enters the cigarette case and pushes the cigarette stack in the cigarette case into the buffer belt conveyor 8.

[0059] See Figures 20 - 23, the pushing cigarette plate assembly 605 includes a pushing cigarette mounting plate 613 fixedly connected to the telescopic rods of two pushing cigarette rods 602 and a pushing cigarette cylinder 603 at the same time. On both sides of the pushing cigarette mounting plate 613, width expansion cylinders 612 are symmetrically and fixedly connected. On the telescopic rod of the width expansion cylinder 612, a width expansion plate 609 is fixedly connected. On the inner side of the pushing cigarette mounting plate 613, seventh linear guide rails 611 are symmetrically and fixedly connected. A height adjustment plate 615 is slidably connected to the seventh linear guide rail 611. On the top of the height adjustment plate 615, a height expansion plate 610 is fixedly connected. A sprocket and chain mechanism 616 is installed in the middle of the pushing cigarette mounting plate 613. A connecting piece 614 is fixedly connected to the chain of the sprocket and chain mechanism 616, and the connecting piece 614 is fixedly connected to the height adjustment plate 615. A height adjustment transmission shaft 607 is rotatably connected to the pushing cigarette rack 601. A height adjustment motor 605 is fixedly installed on the pushing cigarette rack 601 and at one end of the height adjustment transmission shaft 607. The output shaft of the height adjustment motor 605 is drivingly connected to the end of the height adjustment transmission shaft 607. The other end of the height adjustment transmission shaft 607 is drivingly connected to the sprocket and chain mechanism 616. In order to protect the width expansion plate 609 and the height expansion plate 610, a protective plate 608 is also installed outside them.

[0060] After the cigarette box changes, the width and height of the pushing cigarette plate assembly 605 need to be adjusted to ensure that the pushing cigarette plate assembly 605 can push out the cigarette stack in the cigarette box at one time. When adjusting the width of the pushing cigarette plate assembly 605, the telescopic rod of the width expansion cylinder 612 can be controlled, so that the width expansion plates 609 on both sides of the pushing cigarette plate assembly 605 move outward or inward, so as to achieve the purpose of adjusting the width of the pushing cigarette plate assembly 605. Similarly, when adjusting the height of the pushing cigarette plate assembly 605, the height adjustment motor 605 operates to drive the sprocket and chain mechanism 616 to rotate, and then drive the chain on the sprocket and chain mechanism 616 to move. The connecting piece 614 on the chain drives the height adjustment plate 615 to move up and down, so that the height expansion plate 610 on the height adjustment plate 615 also moves up and down together, so as to achieve the purpose of adjusting the height of the pushing cigarette plate assembly 605.

[0061] The overall working process of the full-specification cigarette unpacking system of the present invention includes the following steps:

[0062] Step 1: First, convey the cigarette case along the conveyor line 1. When the cigarette case is conveyed to the station where the lower cover unfolding mechanism 2 or the upper cover unfolding mechanism 3 is located, stop the conveyance. At this time, open the lower cover and the upper cover of the cigarette case through the lower cover unfolding mechanism 2 and the upper cover unfolding mechanism 3 respectively. When opening the lower cover or the upper cover of the cigarette case, use the cover unfolding device 109 on the lower cover unfolding mechanism 2 or the upper cover unfolding mechanism 3 to press the upper cover or the lower cover on both sides of the cigarette case, and then use the cover suction cup 1102 to suck the lower cover or the upper cover of the cigarette case and pull it out a certain gap. At this time, insert two cutting knives 1101 into the gap and make the two cutting knives 1101 expand left and right simultaneously to cut off the tape between the upper cover or the lower cover and the cigarette case, thus completing the work of unfolding the upper cover or the lower cover;

[0063] Step 2: After unfolding, under the action of the guiding stop bar 5 on the side of the conveyor line 1, the unfolded upper cover or lower cover will always be in an unfolded state during the subsequent conveyance. When the cigarette case is conveyed to the station where the clamping and opening side ear mechanism 4 is located, stop the conveyance. At this time, use the side ear suction cup 403 on the clamping and opening side ear mechanism 4 to suck the side ear of the cigarette case and pull it outwards to open the side ear of the cigarette case, and then press the pulled side ear with the side ear pressing rod 402. Since the guiding stop bar 5 on the conveyor line 1 is connected to the side ear pressing rod 402, the side ear of the cigarette case will also always be in an unfolded state during the conveyance;

[0064] Step 3: When the cigarette case with the upper cover, the lower cover, and the side ear all opened is conveyed to the clamping and centering mechanism 7, the clamping and centering mechanism 7 symmetrically contracts inwards through the clamping plates 704 on both sides, so that the cigarette case is located at the midline position of the cigarette pushing mechanism 6. At this time, adjust the height and the left - right width of the cigarette pushing plate assembly 605 according to the size of the cigarette case to ensure that the cigarette pushing plate assembly 605 can push out the cigarette stack in the cigarette case at one time. After the cigarette pushing plate assembly 605 is adjusted, see Figure 24 , the cigarette pushing plate assembly 605 on the cigarette pushing mechanism 6 extends to push the cigarette stack in the cigarette case into the buffer belt conveyor 8, and finally the cigarette stack is distributed and exits the field by the buffer belt conveyor 8.

[0065] It should be noted that, in order to achieve automatic control, the actions of each motor and cylinder in this application are uniformly controlled by the existing upper computer and PLC system, and position sensors are configured at each station to detect whether the actions of the unpacking system are in place and which station the cigarette case runs to.

[0066] In summary, the present invention can achieve the unpacking work of piece cigarette cartons of different sizes, reduce manpower and material resources, reduce the types of equipment, improve the system compatibility, and improve the work efficiency. At the same time, the clamping range of the bidirectional clamping mechanism 106 in the lower cover unfolding mechanism 2 and the upper cover unfolding mechanism 3 of the present invention is increased, and the movable pulley and fixed pulley stroke multiple relationship is also adopted in the descending centering mechanism 108, so that the types of carton sizes that the two mechanisms can adapt to in the horizontal and vertical directions are increased; similarly, the height and left-right width of the cigarette pushing plate assembly 605 of the cigarette pushing mechanism 6 can be adjusted to ensure that the cigarette pushing plate assembly 605 can push out the cigarette stack in the carton at one time to meet the cigarette pushing work of different size cartons.

Claims

1. A full - specification cigarette case - opening system, comprising a transmission line (1), characterized in that: A lower cover unfolding mechanism (2), an upper cover unfolding mechanism (3), a clamping and side ear opening mechanism (4) and a clamping and centering mechanism (7) are sequentially installed along the conveying direction of the transmission line (1); a cigarette pushing mechanism (6) and a buffer belt conveyor (8) are respectively installed on both sides of the clamping and centering mechanism (7); and a guide stopper (5) is fixedly installed on the side of the transmission line (1) close to the cigarette pushing mechanism (6); the lower cover unfolding mechanism (2) and the upper cover unfolding mechanism (3) have the same structure, and both include a door frame (101), a lifting frame (103), a spiral lift (104), a lifting motor (105), a bidirectional clamping mechanism (106), a descending centering mechanism (108) and a cover unfolding device (109 ), a first linear guide rail (102) is symmetrically fixedly installed on the door frame (101), a lifting frame (103) is slidably connected between the first linear guide rails (102), two spiral elevators (104) are symmetrically installed on the top of the door frame (101), and the lifting rods of the two spiral elevators (104) are hingedly connected to the lifting frame (103), the two spiral elevators (104) are transmission-connected via a horizontal transmission shaft (107), a lifting motor (105) is fixedly installed on one side of one of the spiral elevators (104), the output shaft of the lifting motor (105) is transmission-connected to the input shaft of the spiral elevator (104) via a sprocket mechanism, and the lifting frame (103) is symmetrically installed on the top of the door frame (101), and the lifting rods of the two spiral elevators (104) are hingedly connected to the lifting frame (103), and the two spiral elevators (104) are transmission-connected via a horizontal transmission shaft (107), and a lifting motor (105) is fixedly installed on one side of one of the spiral elevators (104), and the output shaft of the lifting motor (105) is transmission-connected to the input shaft of the spiral elevator (104) via a sprocket mechanism, and the lifting frame (103) is symmetrically installed on the top of the door frame (101), and the lifting rods of the two spiral elevators (104) are hingedly connected to the lifting frame (103), and the two spiral elevators (104) are transmission-connected via a horizontal transmission shaft (107). A bidirectional clamping mechanism (106) and a descending centering mechanism (108) are installed on the lifting frame (103); a cover unfolding device (109) is installed on the bidirectional clamping mechanism (106); the descending centering mechanism (108) comprises a horizontal support plate (1081) fixedly connected to the lifting frame (103); a pair of guide sleeves (1082) are fixedly installed on the horizontal support plate (1081); a guide column (1083) is slidably connected in the guide sleeve (1082); a protective cover (1088) is fixedly connected at the lower end of the guide column (1083); a photoelectric detection switch (1086) is fixedly installed in the protective cover (1088); and a photoelectric detection switch (1086) is slidably connected to the bottom of the protective cover (1088). A trigger rod (1087) corresponding to the measuring switch (1086) is rotatably connected to a sprocket A (1089) on the top of the horizontal support plate (1081), and is rotatably connected to a sprocket B (1090) on the lifting frame (103), and a linkage chain (1085) is connected between the sprocket A (1089) and the sprocket B (1090), one end of the linkage chain (1085) is fixedly connected to the protective cover (1088), and the other end is fixedly connected to the door frame (101), and a gas spring (1084) is also fixedly connected to the horizontal support plate (1081), and a telescopic rod of the gas spring (1084) passes through the horizontal support plate (1081) and is fixedly connected to the top of the protective cover (1088);The capping unfolding device (109) includes a connecting plate (1091) fixedly connected to the clamping arm (1065). A cutter unfolding cylinder (1093) is fixedly connected to the top of the connecting plate (1091). Two chutes (1104) are fixedly installed in parallel on the upper part of the connecting plate (1091). An upper rack (1092) and a lower rack (1099) are respectively slidably connected in the two chutes (1104). A synchronous gear (1096) is rotatably connected on the connecting plate (1091) and located between the upper rack (1092) and the lower rack (1099), and the synchronous gear (1096) meshes with both the upper rack (1092) and the lower rack (1099). A left movable plate (1097) and a right movable plate (1095) are respectively fixedly connected to the upper rack (1092) and the lower rack (1099), and the telescopic rod of the cutter unfolding cylinder (1093) is in transmission connection with the left movable plate (1097). Cutter lifting cylinders (1098) are symmetrically fixedly installed at the upper ends of the left movable plate (1097) and the right movable plate (1095). Third linear guides (1106) are symmetrically fixedly installed at the lower ends of the left movable plate (1097) and the right movable plate (1095). A cutter mounting seat (1105) is slidably connected to the third linear guide (1106), and the telescopic rod of the cutter lifting cylinder (1098) is in transmission connection with the cutter mounting seat (1105). A cutter (1101) is fixedly connected to the cutter mounting seat (1105). A smoke pressing plate (1100) and a sucker telescopic cylinder (1094) are respectively fixedly connected to the lower part of the connecting plate (1091). A capping sucker (1102) is fixedly connected to the telescopic rod of the sucker telescopic cylinder (1094).; 2. The full-range cigarette case opening system according to claim 1, characterized in that: The two-way clamping mechanism (106) includes second linear guide rails (1061) symmetrically fixed at both ends of the lifting frame (103). Transverse plates (1062) are slidably connected to the second linear guide rails (1061) at both ends. Clamping arms (1065) are fixedly connected to the bottoms of the transverse plates (1062). A cover unfolding device (109) is fixedly connected to the lower ends of the clamping arms (1065). A cylinder bracket (1066) is fixedly installed on the lifting frame (103) and between the transverse plates (1062) at both ends. A long clamping cylinder (1063) and a short clamping cylinder (1064) are respectively fixedly connected to the cylinder bracket (1066). The telescopic rods of the long clamping cylinder (1063) and the short clamping cylinder (1064) are respectively in transmission connection with the transverse plates (1062) at both ends.

3. The full-range cigarette case opening system according to claim 1, characterized in that: The clamping side ear mechanism (4) includes a vertical frame (401) and fourth linear guide rails (409) symmetrically and fixedly installed on the upper part of the vertical frame (401). A lifting bracket (406) is slidably connected to the fourth linear guide rails (409). A lifting slide cylinder (411) is fixedly installed between the fourth linear guide rails (409). The slide of the lifting slide cylinder (411) is fixedly connected to the lifting bracket (406). A fifth linear guide rail (413) is fixedly connected to the lifting bracket (406). A left sliding seat (414) and a right sliding seat (415) are respectively slidably connected to both ends of the fifth linear guide rail (413). At the same time, a left long cylinder (407) and a right short cylinder (408) are respectively fixedly installed on the lifting bracket (406). The telescopic rods of the left long cylinder (407) and the right short cylinder (408) are respectively in transmission connection with the left sliding seat (414) and the right sliding seat (415). Rotary cylinders (405) are fixedly connected to the bottoms of the left sliding seat (414) and the right sliding seat (415). A curved rod (410) is fixedly connected to the rotary table of the rotary cylinder (405). A side ear suction cup (403) is fixedly connected to the lower end of the curved rod (410). A push plate (404) is also fixedly connected to the left sliding seat (414). A side ear pressing cylinder (412) is fixedly connected to the middle of the vertical frame (401). A side ear pressing rod (402) is fixedly connected to the telescopic rod of the side ear pressing cylinder (412).

4. The full-specification cigarette case opening system according to claim 1, wherein: The clamping and centering mechanism (7) includes an L-shaped frame (701) and symmetrically fixed sixth linear guide rails (702) on the top of the L-shaped frame (701). A left sliding seat (710) and a right sliding seat (706) are respectively slidably connected to both ends of the sixth linear guide rail (702). A scissor telescopic arm (709) is connected between the left sliding seat (710) and the right sliding seat (706). A cylinder mounting plate (703) is fixedly connected on the sixth linear guide rail (702) and between the left sliding seat (710) and the right sliding seat (706). A cigarette clamping cylinder (705) is fixedly connected to the cylinder mounting plate (703), and the telescopic rod of the cigarette clamping cylinder (705) is in transmission connection with the left sliding seat (710). A pair of vertical guide rods (708) and a cigarette clamping plate lifting cylinder (707) are slidably connected to both the left sliding seat (710) and the right sliding seat (706). A cigarette clamping plate (704) is fixedly connected to the lower end of the vertical guide rod (708), and the telescopic rod of the cigarette clamping plate lifting cylinder (707) is in transmission connection with the cigarette clamping plate (704).

5. The full-line cigarette case opening system according to claim 1, wherein: The cigarette pushing mechanism (6) includes a cigarette pushing frame (601) and a cigarette pushing cylinder (603) fixed on the top of the cigarette pushing frame (601). Two cigarette pushing rods (602) are symmetrically and slidably connected to the top of the cigarette pushing frame (601). A cigarette pushing plate assembly (604) is fixedly connected to the ends of the two cigarette pushing rods (602), and the telescopic rod of the cigarette pushing cylinder (603) is in transmission connection with the cigarette pushing plate assembly (604).

6. The full-range cigarette case opening system according to claim 5, wherein: The cigarette pushing plate assembly (604) includes a cigarette pushing mounting plate (613) fixedly connected to both the two cigarette pushing rods (602) and the telescopic rod of the cigarette pushing cylinder (603). Width expansion cylinders (612) are symmetrically and fixedly connected to both sides of the cigarette pushing mounting plate (613). A width expansion plate (609) is fixedly connected to the telescopic rod of the width expansion cylinder (612). Seventh linear guide rails (611) are symmetrically and fixedly connected to the inner side of the cigarette pushing mounting plate (613). A height adjustment plate (615) is slidably connected to the seventh linear guide rails (611). A height expansion plate (610) is fixedly connected to the top of the height adjustment plate (615). A sprocket and chain mechanism (616) is installed in the middle of the cigarette pushing mounting plate (613). A connecting piece (614) is fixedly connected to the chain of the sprocket and chain mechanism (616), and the connecting piece (614) is fixedly connected to the height adjustment plate (615). A height adjustment transmission shaft (607) is rotatably connected to the cigarette pushing frame (601). A height adjustment motor (605) is fixedly installed at one end of the height adjustment transmission shaft (607) on the cigarette pushing frame (601), and the output shaft of the height adjustment motor (605) is in transmission connection with the end of the height adjustment transmission shaft (607). The other end of the height adjustment transmission shaft (607) is in transmission connection with the sprocket and chain mechanism (616).

7. An unpacking method for the unpacking system of all product specification cigarette cases according to any one of claims 1 to 6, characterized in that Including the following steps: Step 1: First, convey the cigarette case along the conveyor line (1). When the cigarette case is conveyed to the station where the lower cover unfolding mechanism (2) or the upper cover unfolding mechanism (3) is located, stop the conveyance. At this time, open the lower cover and the upper cover of the cigarette case through the lower cover unfolding mechanism (2) and the upper cover unfolding mechanism (3) respectively. When opening the lower cover or the upper cover of the cigarette case, use the cover unfolding device (109) on the lower cover unfolding mechanism (2) or the upper cover unfolding mechanism (3) to press the upper cover or the lower cover on both sides of the cigarette case, then use the cover suction cup (1102) to suck the lower cover or the upper cover of the cigarette case and pull it outwards to form a certain gap. At this time, insert two cutting knives (1101) into the gap and make the two cutting knives (1101) expand left and right simultaneously to cut the tape between the upper cover or the lower cover and the cigarette case, thus completing the work of unfolding the upper cover or the lower cover. Step 2: After unfolding, under the action of the guiding stop rod (5) on the side of the conveyor line (1), the unfolded upper cover or lower cover will remain in the unfolded state during the subsequent conveyance process. When the cigarette case is conveyed to the station where the clip-opening side ear mechanism (4) is located, stop the conveyance. At this time, use the side ear suction cup (403) on the clip-opening side ear mechanism (4) to suck the side ear of the cigarette case and pull it outwards to open the side ear of the cigarette case, and then use the side ear pressing rod (402) to press the pulled-out side ear. Since the guiding stop rod (5) on the conveyor line (1) is connected with the side ear pressing rod (402), the side ear of the cigarette case also remains in the unfolded state during the conveyance process. Step 3: When the cigarette case with the upper cover, the lower cover, and the side ear all opened is conveyed to the clip-centering mechanism (7), the clip-centering mechanism (7) symmetrically contracts inwards through the clip cigarette plates (704) on both sides to make the cigarette case located at the midline position of the cigarette pushing mechanism (6). At this time, adjust the height and the left-right width of the cigarette pushing plate assembly (604) according to the size of the cigarette case to ensure that the cigarette pushing plate assembly (604) can push out the cigarette stack in the cigarette case at one time. After the cigarette pushing plate assembly (604) is adjusted, the cigarette pushing plate assembly (604) on the cigarette pushing mechanism (6) extends to push the cigarette stack in the cigarette case into the buffer belt conveyor (8), and finally the cigarette stack is distributed and exits the factory by the buffer belt conveyor (8).

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