Automatic packaging box production line

Abstract

According to the automatic packaging box production line, an eccentric wheel and a supporting base are matched to achieve the effect that after patterns on the periphery of a printing roller are printed, the printing roller falls down and is not separated from a paper tape, and then a pressing roller and the printing roller are separated in a linkage rotation mode through a first connecting shaft structure; and the printing roller rotates to the next printing starting point through the driving rotating mechanism, linkage of the pressing roller and the printing roller is achieved again through the first connecting shaft structure, only a set of patterns need to be arranged on the periphery of the printing roller, and printing of the patterns of any size can be adapted.

Description

Technical Field

[0001] The invention belongs to the field of packaging box production, and in particular relates to an automatic production line for packaging boxes. Background Art

[0002] As the name suggests, a packaging box is a box used to package products. It is used to ensure the safety of products during transportation and improve the grade of products.

[0003] The production of existing packaging boxes can refer to a new type of printing production line disclosed in Chinese patent number CN201520538144.2, which requires the provision of paper tape through a reeling mechanism, and multiple printing passes to form a pattern on the surface of the paper tape, and then the packaging box cardboard is cut from the paper tape by die-cutting. In addition, in order to improve the quality of the packaging box, indentation, hot stamping and other processes are also performed. These processes belong to different product quality requirements and are non-essential processes.

[0004] The existing printing is all done by a rolling printing press, so that the ink on the printing roller is printed on the surface of the paper tape under the cooperation of the pressure roller and the printing roller.

[0005] The problem with the above printing is that in order to ensure the effective coordination between the printing roller and the pressure roller, the size of the printing roller of each printing machine is usually constant, and the circumference of the printing roller is larger than the printing pattern, so that the outer surface of the printing roller needs to be provided with multiple groups of the same patterns along the circumferential direction, which makes the pattern engraving on the surface of the printing roller cumbersome and increases the cost, especially for non-mass-produced packaging boxes, which greatly increases the production cost. In addition, in order to ensure that each group of circumferential patterns can be printed in a cyclic manner, it is usually necessary to calculate the spacing between adjacent circumferential patterns, which not only makes the pattern arrangement design of the printing roller complicated, but also the spacing between adjacent patterns is constant and cannot be adjusted during printing. Summary of the invention

[0006] In view of the deficiencies in the prior art, the purpose of the present invention is to provide an automated production line for packaging boxes, which uses an eccentric wheel and a support seat to achieve the falling of the pattern on the periphery of the printing roller after printing without being released from the paper tape, and then releases the linked rotation of the pressure roller and the printing roller through the first coupling structure, and rotates the printing roller to the next printing starting point through an active rotation mechanism, and then re-realizes the linkage between the pressure roller and the printing roller through the first coupling structure. It only needs to set a group of patterns on the periphery of the printing roller, which can be adapted to the printing of patterns of any size.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] An automated production line for packaging boxes, characterized in that it comprises: an unwinding mechanism, multiple printing devices, multiple drying devices, a laminating device, a creasing device, a die-cutting device and a transmission device; the unwinding mechanism is provided with a roll of rolled paper, and the roll of rolled paper is output in the form of a continuous paper tape by rotating under the drive of the transmission device, the paper tape passes through each printing device to print and form a pattern layer, the paper tape passes through the drying device to dry the ink printed on the paper tape, the paper tape passes through the laminating device to coat the surface of the pattern layer for protection, the paper tape passes through the creasing device to form a bending creasing on the paper tape, and the paper tape passes through the The die-cutting device is used to cut the packaging box from the paper tape; the printing device includes a frame and a pressure roller, a printing roller, a linkage mechanism and an active rotation mechanism installed on the frame. The pressure roller is rotatably installed on the frame. The linkage mechanism includes a first transmission gear, a second transmission gear, a second linkage shaft, a third linkage shaft, a first shaft connection structure, an eccentric wheel, and a support seat. The axial directions of the second linkage shaft and the third linkage shaft are parallel to the axial direction of the pressure roller, and are respectively located at the axial ends of the printing roller, and are rotatably installed on the frame. There are gears between the second linkage shaft and the printing roller and between the third linkage shaft and the printing roller. A telescopic universal coupling is provided to enable the printing roller to approach or move away from the pressure roller. The first transmission gear is fixedly arranged at one axial end of the pressure roller. The second transmission gear is rotatably installed on the outer periphery of the second linkage shaft, and the first transmission gear and the second transmission gear are meshed. The first coupling structure includes a coupling slide and a first cylinder. The coupling slide is slidably arranged on the second linkage shaft and rotates synchronously with the second linkage shaft. The first cylinder is used to drive the coupling slide to slide. The second transmission gear is provided with a first coupling portion at one end facing the coupling slide. The coupling slide faces the second A second coupling portion is provided at one end of the transmission gear, and the coupling slide seat slides to make the first coupling portion and the second coupling portion cooperate to realize the synchronous rotation of the second transmission gear and the coupling slide seat, and the coupling slide seat slides to make the first coupling portion and the second coupling portion disengage to release the synchronous rotation of the second transmission gear and the coupling slide seat, and the active rotation structure is used to drive the third linkage shaft to rotate circumferentially, the eccentric wheel is fixedly arranged on the printing roller, and the support seat is arranged on the frame and is located below the eccentric wheel to support the eccentric wheel, and the printing roller rotates and approaches or moves away from the pressure roller with the cooperation of the eccentric wheel and the support seat.

[0009] The present invention is further configured as follows: an ink pool and an inkjet printer are also provided on the frame; the ink pool is located below the printing roller and the bottom part of the printing roller is immersed in the ink pool so that the ink in the ink pool adheres to the surface of the printing roller; the inkjet printer is used to absorb the ink in the ink pool and spray it toward the surface of the printing roller so that the ink adheres to the surface of the printing roller.

[0010] The present invention is further configured as follows: the linkage mechanism also includes a lifting mechanism, the lifting mechanism is arranged on the frame and is used to lift the support seat.

[0011] The present invention is further configured as follows: the linkage mechanism also includes a third transmission gear and a transmission assembly, the third transmission gear is rotatably installed on the outer periphery of the second linkage shaft, and the second transmission gear and the third transmission gear are located at both ends of the coupling slide, the third transmission gear is provided with a third coupling portion at one end of the coupling slide facing the coupling slide, and the fourth coupling portion is provided at one end of the coupling slide facing the third transmission gear, the coupling slide slides to make the third coupling portion and the fourth coupling portion cooperate to realize synchronous rotation of the third transmission gear and the coupling slide, the coupling slide slides to make the third coupling portion and the fourth coupling portion disengage to release the synchronous rotation of the third transmission gear and the coupling slide, and the transmission assembly is used to mesh the second transmission gear and the third transmission gear, and make the rotation directions of the second transmission gear and the third transmission gear opposite.

[0012] The present invention is further configured as follows: the coupling slide has a first mating state, a second mating state and a third mating state; in the first mating state, the first coupling portion and the second coupling portion are mated, and the third coupling portion and the fourth coupling portion are disengaged; in the second mating state, the first coupling portion and the second coupling portion are disengaged, and the third coupling portion and the fourth coupling portion are disengaged; in the third mating state, the first coupling portion and the second coupling portion are disengaged, and the third coupling portion and the fourth coupling portion are mated.

[0013] The present invention is further configured as follows: the transmission assembly includes a transmission housing seat and a first transmission shaft, a second transmission shaft, a fourth transmission gear, a fifth transmission gear, a sixth transmission gear, and a seventh transmission gear arranged in the transmission housing seat; the first transmission shaft and the second transmission shaft are rotatably mounted on the transmission housing seat; the fourth transmission gear and the fifth transmission gear are fixedly arranged on the first transmission shaft; the sixth transmission gear and the seventh transmission gear are fixedly arranged on the second transmission shaft; the fourth transmission gear and the second transmission gear are meshed; the fifth transmission gear is meshed with the sixth transmission gear; and the seventh transmission gear is meshed with the third transmission gear; and the transmission housing seat is detachably arranged on the frame.

[0014] The present invention is further configured as follows: the first transmission gear, the second transmission gear, and the fourth transmission gear are spur gears or helical gears, and the third transmission gear, the fifth transmission gear, the sixth transmission gear, and the seventh transmission gear are bevel gears or bevel gears; the first transmission shaft and the second linkage shaft are arranged in parallel, and the second transmission shaft and the second linkage shaft are arranged vertically.

[0015] The present invention is further configured as follows: a plurality of coupling slots are arranged circumferentially on the outer circumference of the first coupling part and the third coupling part, the second coupling part and the fourth coupling part are cylindrical in shape matching the outer circumference of the first coupling part and the third coupling part, and a plurality of coupling inserts are arranged on the inner circumference of the second coupling part and the fourth coupling part; each of the coupling slots and the coupling inserts is in the shape of a long strip extending along the axial direction of the second linkage shaft; each of the coupling slots is provided with an insertion port for inserting the coupling insert, each of the insertion ports is flared, and each of the coupling inserts is provided with an insertion end for inserting into the coupling slot, and each of the insertion ends is contracted.

[0016] The present invention is further configured as follows: the active rotation mechanism includes a matching slide, a second cylinder, a second motor, a first connecting disk, and a second connecting disk, the matching slide is arranged on the frame along the axial sliding of the third linkage shaft, the second cylinder is used to drive the matching slide to slide, the second motor is fixedly arranged on the matching slide, the first connecting disk is fixedly arranged on the third linkage shaft, the second connecting disk is fixedly arranged on the output shaft of the second motor, the first connecting disk is circumferentially arranged with a first tooth portion on a side facing the second connecting disk, and the second connecting disk is circumferentially arranged with a second tooth portion on a side facing the first connecting disk; the second cylinder drives the matching slide to slide so that the first connecting disk and the second connecting disk are engaged through the first tooth portion and the second tooth portion to realize the synchronous rotation of the output shaft of the second motor and the third linkage shaft; the second cylinder drives the matching slide to slide so that the first connecting disk and the second connecting disk are separated to realize the disengagement of the output shaft of the second motor and the third linkage shaft.

[0017] The present invention is further configured as follows: a first motor is arranged on the frame, and an output shaft of the first motor is connected to an end of the pressure roller away from the first transmission gear to drive the pressure roller to rotate.

[0018] By adopting the above technical scheme, 1. When batch and rapid printing is required, the printing roller used is a printing roller with a circumferentially uniformly distributed pattern, the eccentric wheel is changed to a concentric wheel, and the concentric wheel is supported by the support seat to realize that the printing roller is always pressed against the pressure roller, and the first cylinder is used to ensure that the coupling slide and the second transmission gear are always matched, so that the pressure roller and the printing roller can move synchronously with the cooperation of the first transmission gear and the second transmission gear to print continuously on the transmitted paper tape without stopping, which is the same as the existing traditional printing method; 2. When small-scale and special printing is required, the printing roller used is engraved with patterns only in part of the area, and the rest of the area does not need to be engraved, so that the production cost of the printing roller is lower, and the cooperation of the eccentric wheel and the support seat is adopted, so that when the maximum radius section of the eccentric wheel and the support seat cooperate, the printing roller is lifted upward to press the paper tape on the pressure roller, and the circumferential limit of the second linkage shaft and the second transmission gear can be carried out under the action of the first coupling structure. The printing roller and the paper tape are rotated synchronously, and the printing roller and the paper tape are printed in the process of rotation. After the printing of the engraved pattern is completed, the eccentric wheel rotates to a position where the radius is less than the maximum radius and cooperates with the support seat. Therefore, under the action of gravity, the printing roller will be out of contact with the paper tape without printing. After that, the first cylinder can be used to drive the coupling slide to realize the disengagement of the first coupling part and the second coupling part. Therefore, the printing roller can be driven to rotate independently of the printing roller and pass over the part without engraving the pattern for the next time through the work of the active rotating mechanism. During this period, the printing roller can be driven to rotate to transmit the paper tape to the next process, so that a gap is formed between the two embossed patterns on the paper tape. The printing roller can also be kept stationary during this period to realize that no gap is generated between the two embossed patterns, so as to solve the defect that the gap between the two embossed patterns in the existing printing cannot be adjusted, so as to make the printing more diverse. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of a specific embodiment of the present invention;

[0021] Figure 2 A schematic diagram of a printing device in a specific embodiment of the present invention;

[0022] Figure 3 A cross-sectional view of a portion of the structure of a printing device in a specific embodiment of the present invention;

[0023] Figure 4for Figure 3 A partial enlarged view of

[0024] Figure 5 for Figure 3 A partial enlarged view of

[0025] Figure 6 for Figure 3 A partial enlarged view of

[0026] Figure 7 It is a three-dimensional cross-sectional view of a shaft coupling slide in a specific embodiment of the present invention;

[0027] Figure 8 It is a three-dimensional diagram of the third transmission gear in a specific embodiment of the present invention;

[0028] Fig. 9 It is a stereoscopic view of the first connecting disk in a specific implementation manner of the present invention.

[0029] Description of reference numerals:

[0030] 1. Frame;

[0031] 11. The first motor;

[0032] 2. Pressing roller;

[0033] 3. Printing roller;

[0034] 4. Linkage mechanism;

[0035] 41. first transmission gear; 42. second transmission gear; 43. second linkage shaft; 44. third linkage shaft; 45. first linkage structure; 46. eccentric wheel; 47. support seat; 48. lifting mechanism; 49. third transmission gear;

[0036] 421, first connecting shaft;

[0037] 431, hexagonal prism segment;

[0038] 451, shaft slide; 453, carrier;

[0039] 4511, second connecting shaft portion; 4512, fourth connecting shaft portion; 4513, through hole;

[0040] 491, third connecting shaft;

[0041] 5. Active rotation mechanism;

[0042] 51. Matching slide; 52. Second cylinder; 53. Second motor; 54. First connecting plate; 55. Second connecting plate;

[0043] 541, first latching tooth portion; 551, second latching tooth portion;

[0044] 6. Universal coupling;

[0045] 7. Transmission components;

[0046] 71, first transmission shaft; 72, second transmission shaft; 73, fourth transmission gear; 74, fifth transmission gear; 75, sixth transmission gear; 76, seventh transmission gear;

[0047] 81. ink pool; 82. inkjet printer; 83. scraper; 84. baffle; 85. coupling slot; 86. coupling insert;

[0048] 851, insertion port; 861, insertion end;

[0049] 91. Unwinding mechanism; 92. Printing device; 93. Drying device; 94. Laminating device; 95. Impressing device; 96. Die-cutting device; 97. Rewinding mechanism; 98. Transport device. DETAILED DESCRIPTION

[0050] In order to enable those skilled in the art to better understand the present invention, and thus to more clearly define the scope of the present invention, the present invention is described in detail with respect to some specific embodiments of the present invention. It should be noted that the following are only some specific implementation methods of the present invention, which are only part of the embodiments of the present invention, wherein the specific and direct description of the relevant structure is only for the convenience of understanding the present invention, and each specific feature does not naturally and directly limit the scope of implementation of the present invention. The conventional selection and replacement made by those skilled in the art under the guidance of the present invention should be regarded as within the scope of the present invention.

[0051] like Figure 1-Figure 9As shown, the present invention discloses an automated production line for packaging boxes, comprising an unwinding mechanism 91, three printing devices 92, three drying devices 93, a laminating device 94, a creasing device 95, two die-cutting devices 96, a rewinding mechanism 97 and two transmission devices 98; wherein the unwinding device is located on the far left, and a transmission device 98 is arranged on the right side of the unwinding device, so that the roll paper provided by the unwinding device is arranged thereon, and under the drive of the transmission device 98, the roll paper is output in the form of a continuous paper tape by rotating, and then the three printing devices 92 are arranged in an array, and the three drying devices 93 are respectively arranged on the three printing devices 92, so that the paper tape passes through each printing device 92 for The pattern layer is formed by printing, and before the paper tape is output from the corresponding printing device 92, the ink printed on the paper tape is dried by the drying device 93 on the printing device 92. A transmission device 98 is arranged after the printing device 92, so that the two transmission devices 98 are transmitted between the printing devices 92 to ensure that the paper tape between the printing devices 92 has a better transmission to ensure the accuracy of printing. Then, a laminating device 94, a creasing device 95, and a die-cutting device 96 are arranged, and the printed paper tape is laminated, creasing, and cut in turn to obtain a packaging box cardboard, and a winding mechanism 97 is arranged on the far right to wind up the waste tape obtained after cutting the packaging box cardboard.

[0052] Specifically, the transmission device 98 adopts the arrangement of upper and lower roller groups, so that the upper and lower roller groups rotate in opposite directions to transmit the paper tape to the right.

[0053] The drying device 93 may adopt hot air drying or ultraviolet drying, which is selected according to the actual situation. In this embodiment, UV ink is used to print the paper tape and ultraviolet rays are used to dry it.

[0054] Specifically, the laminating device 94 uses the upper film output by the upper film roll, the lower film output by the lower mold roll, and the printed paper tape to synchronously input the upper and lower roller groups to coat the upper and lower films on the upper and lower sides of the paper tape.

[0055] Among them, the creasing device 95 and the die-cutting device 96 can use the upper and lower roller groups to form a creasing on the paper tape or cut the packaging box cardboard from the paper tape during the paper tape transmission process. In addition, the creasing device 95 and the die-cutting device 96 can also use the upper and lower die holders to clamp the paper tape up and down to form a creasing on the paper tape or cut the packaging box cardboard from the paper tape. Among them, the upper and lower roller groups for creasing and die-cutting are more used in continuous non-stop printing, while the upper and lower die holders for creasing and die-cutting are more used in printing with irregular layout.

[0056] Preferably, the printing device 92 in this embodiment includes a frame 1 and a pressure roller 2, a printing roller 3, a linkage mechanism 4 and an active rotation mechanism 5 installed on the frame 1. The pressure roller 2 is rotatably installed on the frame 1 along the axial direction at both ends by means of bearings. The linkage mechanism 4 includes a first transmission gear 41, a second transmission gear 42, a second linkage shaft 43, a third linkage shaft 44, a first shaft connection structure 45, an eccentric wheel 46, and a support seat 47. The axial directions of the second linkage shaft 43 and the third linkage shaft 44 are parallel to the axial direction of the pressure roller 2, and are respectively located at the axial ends of the printing roller 3, and are rotatably mounted on the frame 1 by means of bearings. A universal coupling 6 with a retractable length is arranged between the second linkage shaft 43 and the printing roller 3 as well as between the third linkage shaft 44 and the printing roller 3 to enable the printing roller 3 to approach or move away from the pressure roller 2. The first transmission gear 41 is fixedly arranged at one axial end of the pressure roller 2 by means of a key connection. The second transmission gear 42 is rotatably mounted on the outer periphery of the second linkage shaft 43 by means of a copper sleeve or a bearing, and the first transmission gear 41 and the second transmission gear 42 are meshed. The first shaft coupling structure 45 includes a shaft coupling slide 451 and a first cylinder. The shaft coupling slide 451 is slidably disposed on the second linkage shaft 43 and rotates synchronously with the second linkage shaft 43. The first cylinder is used to drive the shaft coupling slide 451 to slide. The second transmission gear 42 is provided with a first shaft coupling portion 421 at one end thereof facing the shaft coupling slide 451. The shaft coupling slide 451 is provided with a second shaft coupling portion 4511 at one end thereof facing the second transmission gear 42. The shaft coupling slide 451 slides to make the first shaft coupling portion 421 and the second shaft coupling portion 4511 cooperate to achieve synchronous rotation of the second transmission gear 42 and the shaft coupling slide 451. The shaft coupling slide 451 slides to make the first shaft coupling portion 421 and the second shaft coupling portion 4511 disengage to release the synchronous rotation of the second transmission gear 42 and the shaft coupling slide 451. The active rotation structure is used to drive the third linkage shaft 44 to rotate circumferentially. The eccentric wheel 46 is fixedly disposed on the printing roller 3 , and the support seat 47 is disposed on the frame 1 and is located below the eccentric wheel 46 to support the eccentric wheel 46 . The printing roller 3 rotates and approaches or moves away from the pressing roller 2 in cooperation with the eccentric wheel 46 and the support seat 47 .

[0057] Therefore, 1. When batch and fast printing is required, the printing roller 3 used is a printing roller 3 with a circumferentially uniformly distributed pattern, and the eccentric wheel 46 is changed to a concentric wheel, and the concentric wheel is supported by the support seat 47 to realize that the printing roller 3 is always pressed against the pressure roller 2, and the first cylinder ensures that the coupling slide 451 and the second transmission gear 42 are always matched, so that the pressure roller 2 and the printing roller 3 can move synchronously under the cooperation of the first transmission gear 41 and the second transmission gear 42 to print continuously on the transmitted paper tape without stopping, which is the same as the existing traditional printing method; 2. When a small amount of special printing is required, the printing roller 3 used is engraved with patterns only in part of the area, and the rest of the area does not need to be engraved, so that the production cost of the printing roller 3 is lower, and the cooperation of the eccentric wheel 46 and the support seat 47 is adopted, so that when the maximum radius section of the eccentric wheel 46 and the support seat 47 cooperate, the printing roller 3 is pushed upward to press the paper tape on the pressure roller 2, and under the action of the first coupling structure 45, the second linkage shaft 43 and the second transmission gear 42 can be limited circumferentially The printing roller 3 rotates synchronously, so that under the cooperation of the first transmission gear 41 and the second transmission gear 42, the pressing roller 2 and the printing roller 3 rotate synchronously and print the engraved pattern during the rotation. After the engraved pattern is printed, the eccentric wheel 46 rotates to a position where the radius is less than the maximum radius and cooperates with the support seat 47, so that under the action of gravity, the printing roller 3 will be out of contact with the paper tape without printing. After that, the first cylinder can drive the coupling slide 451 to slide to achieve the disengagement of the first coupling part 421 and the second coupling part 4511, so that the printing roller 3 can be rotated independently of the pressing roller 2 through the work of the active rotation mechanism 5 to pass over the part without the engraved pattern for the next time. During this period, the pressing roller 2 can be driven to rotate to transmit the paper tape to the next process, so that a gap is formed between the two patterns embossed on the paper tape. The pressing roller 2 can also be kept stationary during this period to achieve no gap between the two patterns embossed, so as to solve the defect that the gap between the two patterns embossed in the existing printing cannot be adjusted, so that the printing is more diverse.

[0058] Specifically, a hexagonal through hole 4513 is opened on the inner circumference of the connecting shaft slide 451, and the second linkage shaft 43 is provided with a hexagonal section 431 adapted to the shape of the aforementioned through hole 4513. Through the cooperation of the two, the Lianzhou slide is slidably set on the second linkage shaft 43 and can rotate with the second linkage shaft 43.

[0059] In addition, a carrier 453 is also arranged on the outer periphery of the coupling slide 451, and the two are installed by means of bearings so that the coupling slide 451 can rotate relative to the carrier 453, and the carrier 453 slides in the front and rear directions in cooperation with the frame 1 by means of slide rails, and the sliding of the coupling slide 451 is realized by driving the carrier 453 to slide by the first cylinder.

[0060] Preferably, the number of combinations of the eccentric wheel 46 and the support seat 47 in this embodiment is two groups, which are respectively located on both sides of the axial direction of the printing roller 3, and the eccentric wheel 46 is fixedly installed on the end of the printing roller 3 by means of bolts. In addition, the support seat 47 is L-shaped, wherein one L-shaped section of the support seat 47 is located below the eccentric wheel 46 to support the eccentric wheel 46, and the other L-shaped section of the eccentric wheel 46 is located on the side of the eccentric wheel 46 away from the printing roller 3 to axially limit the printing roller 3, thereby preventing the axial deviation of the printing roller 3 from affecting the printing accuracy due to the connection of the telescopic universal coupling 6.

[0061] Preferably, the linkage mechanism 4 in this embodiment further includes a lifting mechanism 48, which is disposed on the frame 1 and is used to lift the support seat 47. Therefore, after the pattern on the printing roller 3 is printed and the printing roller 3 and the pressure roller 2 are separated under the action of the eccentric wheel 46 and the support seat 47, the printing roller 3 is further lowered by the lifting mechanism 48, and the printing roller 3 can be reversely rotated under the action of the active rotation mechanism 5. Among them, for the printing roller 3 whose curvature of the pattern on the printing roller 3 is greater than π, forward rotation is adopted to more quickly realize reset for the next printing, and for the printing roller 3 whose curvature of the pattern on the printing roller 3 is less than π, reverse rotation is adopted to more quickly realize reset for the next printing.

[0062] Specifically, the lifting mechanism 48 adopts a cylinder.

[0063] In addition, the linkage mechanism 4 in this embodiment also includes a third transmission gear 49 and a transmission assembly 7. The third transmission gear 49 is rotatably mounted on the outer periphery of the second linkage shaft 43 by means of a copper sleeve or a bearing, and the second transmission gear 42 and the third transmission gear 49 are located at both ends of the coupling slide 451. In addition, a third coupling portion 491 is provided at one end of the third transmission gear 49 facing the coupling slide 451, and a fourth coupling portion 4512 is provided at one end of the coupling slide 451 facing the third transmission gear 49. The coupling slide 451 slides to make the third coupling portion 491 and the fourth coupling portion 4512 cooperate to achieve synchronous rotation of the third transmission gear 49 and the coupling slide 451. The coupling slide 451 slides to make the third coupling portion 491 and the fourth coupling portion 4512 disengage to release the synchronous rotation of the third transmission gear 49 and the coupling slide 451. The transmission assembly 7 is used to mesh the second transmission gear 42 and the third transmission gear 49, and make the second transmission gear 42 and the third transmission gear 49 rotate in opposite directions.

[0064] Therefore, in addition to using the active rotation mechanism 5 to reverse the printing roller 3, the third transmission gear 49 can also be used to cooperate to achieve reversal. Specifically, after the pattern on the printing roller 3 is printed, the first cylinder drives the shaft connecting slide 451 to slide to release the cooperation between the first connecting shaft portion 421 and the second connecting shaft portion 4511, and the third connecting shaft portion 491 and the fourth connecting shaft portion 4512 are matched, and the printing roller 3 is lowered downward by the lifting mechanism 48 to ensure that the printing roller 3 does not contact the paper tape during the reversal process, and then the printing roller 3 is synchronously driven to rotate by the rotation of the pressure roller 2, and the two rotate in the same direction. That is, the printing roller 3 rotates in the opposite direction to the printing rotation, and stops rotating when the printing roller 3 rotates to the next printing position. At this time, the lifting mechanism 48 drives the support seat 47 to rise to the original position so that the printing roller 3 can be pressed on the paper tape, and then the first cylinder drives the connecting shaft slide 451 to slide to release the cooperation between the third connecting shaft part 491 and the fourth connecting shaft part 4512, and makes the first connecting shaft part 421 and the second connecting shaft part 4511 cooperate to work for the next printing. It should be noted that this method has fewer driving sources, but there must be a distance between the two printed patterns.

[0065] From the above structure, it can be seen that the coupling slide 451 has a first matching state, a second matching state and a third matching state; in the first matching state, the first coupling part 421 and the second coupling part 4511 are matched, and the third coupling part 491 and the fourth coupling part 4512 are disengaged; in the second matching state, the first coupling part 421 and the second coupling part 4511 are disengaged, and the third coupling part 491 and the fourth coupling part 4512 are disengaged, that is, Figure 3 in the third mating state, the first coupling portion 421 and the second coupling portion 4511 are disengaged, and the third coupling portion 491 and the fourth coupling portion 4512 are mated.

[0066] Preferably, the transmission assembly 7 in this embodiment includes a transmission housing seat (not shown in the figure) and a first transmission shaft 71, a second transmission shaft 72, a fourth transmission gear 73, a fifth transmission tooth 74, a sixth transmission gear 75, and a seventh transmission tooth 76 arranged in the transmission housing seat, the first transmission shaft 71 and the second transmission shaft 72 are rotatably mounted on the transmission housing seat, the fourth transmission gear 73 and the fifth transmission tooth 74 are fixedly arranged on the first transmission shaft 71, the sixth transmission gear 75 and the seventh transmission tooth 76 are fixedly arranged on the second transmission shaft 72, the fourth transmission gear 73 and the second transmission gear 42 are meshed, the fifth transmission tooth 74 and the sixth transmission gear 75 are meshed, and the seventh transmission tooth 76 and the third transmission gear 49 are meshed; the transmission housing seat is detachably arranged on the frame 1.

[0067] Therefore, the transmission structure formed by the linked fourth transmission gear 73, fifth transmission gear 74, sixth transmission gear 75, and seventh transmission gear 76 links the second transmission gear 42 and the third transmission gear 49 to achieve opposite rotation directions of the second transmission gear 42 and the third transmission gear 49 to achieve reverse output, and the transmission component 7 is simplified.

[0068] Preferably, the first transmission gear 41, the second transmission gear 42, and the fourth transmission gear 73 in the present embodiment are spur gears or helical gears, and the third transmission gear 49, the fifth transmission gear 74, the sixth transmission gear 75, and the seventh transmission gear 76 are bevel gears or bevel teeth; the first transmission shaft 71 and the second linkage shaft 43 are arranged in parallel, and the second transmission shaft 72 and the second linkage shaft 43 are arranged vertically, so that the overall structure is more concise, and different transmission ratios can be set by using the bevel gear combination, so as to control the spacing between the two printed patterns. Specifically, a detachable transmission shell seat with different transmission ratios is used to cooperate with the frame 1 to input different transmission ratios.

[0069] It should be noted that when the copper sleeve is used, the axial ends of the copper sleeve also need to be positioned to prevent the second transmission gear 42 and the third transmission gear 49 from moving in the axial direction.

[0070] In addition, an ink pool 81 and an inkjet ejector 82 are also provided on the frame 1 .

[0071] Among them, the ink pool 81 is located below the printing roller 3 and the bottom part of the printing roller 3 is immersed in the ink pool 81 so that the ink in the ink pool 81 adheres to the surface of the printing roller 3, and a scraper 83 is also arranged on the frame 1 to make the ink used for printing on the printing roller 3 more uniform; the ink pool 81 mainly supplies ink for two methods: continuous printing and forward rotation and resetting the printing roller 3.

[0072] Among them, the inkjet device 82 includes a pipe extending along the axial direction of the printing roller 3, and a plurality of nozzles are arranged on the pipe along the length direction. In addition, the pipe is also provided with a straw to extend into the ink pool 81, so that the ink in the ink pool 81 is sprayed out through the straw, the pipe, and the nozzle in sequence by a pump so that the ink adheres to the surface of the printing roller 3, so that the part with the pattern on the printing roller 3 does not need to pass through the ink pool 81 for the ink to adhere, and can be directly reversed and reset.

[0073] In addition, a baffle 84 is provided above the nozzle to prevent splashing ink from being sprayed onto the paper tape.

[0074] Specifically, in the present embodiment, a plurality of coupling slots 85 are circumferentially arranged on the outer circumference of the first coupling portion 421 and the third coupling portion 491, and correspondingly, the second coupling portion 4511 and the fourth coupling portion 4512 are cylindrical in shape to match the outer circumference of the first coupling portion 421 and the third coupling portion 491, and a plurality of coupling strips 86 are arranged on the inner circumference of the second coupling portion 4511 and the fourth coupling portion 4512; wherein each coupling slot 85 and coupling strip 86 is in the shape of a long strip extending along the axial direction of the second linkage shaft 43.

[0075] Therefore, when the coupling slide 451 slides to make the second coupling part 4511 approach the first coupling part 421, or the fourth coupling part 4512 approach the third coupling part 491, the cylindrical second coupling part 4511 is sleeved on the outer periphery of the first coupling part 421 or the fourth coupling part 4512 is sleeved on the outer periphery of the third coupling part 491, and then the alignment connection is achieved through the plug-in cooperation of multiple connecting strips and connecting slots.

[0076] Preferably, each coupling slot 85 is provided with an insertion port 851 for inserting a coupling strip 86, and each insertion port 851 is flared. Each coupling strip 86 is provided with an insertion end 861 for inserting into the coupling slot 85, and each insertion end 861 is contracted, so that the connection between the coupling slot 85 and the coupling strip 86 is smoother.

[0077] Specifically, the active rotation mechanism 5 in this embodiment includes a matching slide 51, a second cylinder 52, a second motor 53 (servo motor), a first connecting plate 54, and a second connecting plate 55. The matching slide 51 is arranged on the frame 1 along the axial sliding movement of the third linkage shaft 44 in the form of a guide rail. The second cylinder 52 is installed on the frame 1, and the output shaft of the second cylinder 52 is connected to the matching slide 51 to drive the matching slide 51 to slide. The second motor 53 is fixedly arranged on the matching slide 51, the first connecting plate 54 is fixedly arranged on the third linkage shaft 44, and the second connecting plate 55 is fixedly arranged on the output shaft of the second motor 53. The first engaging teeth 541 are arranged circumferentially on one side of the second connecting disk 54 facing the second connecting disk 55, and the second engaging teeth 551 are arranged circumferentially on one side of the second connecting disk 55 facing the first connecting disk 54; the second cylinder 52 drives the matching slide 51 to slide so that the first connecting disk 54 and the second connecting disk 55 are engaged through the first engaging teeth 541 and the second engaging teeth 551, so that the output shaft of the second motor 53 and the third linkage shaft 44 rotate synchronously; the second cylinder 52 drives the matching slide 51 to slide so that the first connecting disk 54 and the second connecting disk 55 are separated so that the output shaft of the second motor 53 and the third linkage shaft 44 are disengaged. The matching slide 51 that is arranged to slide can realize the connection or separation of the second motor 53 and the third linkage shaft 44 under the drive of the second cylinder 52, so that the second motor 53 is connected only when the second motor 53 is needed to drive the printing roller 3 to rotate, so as to prevent the second motor 53 from being damaged due to long-term idling.

[0078] Preferably, a first motor 11 (servo motor) is provided on the frame 1 in this embodiment, and the output shaft of the first motor 11 is connected to one end of the pressure roller 2 away from the first transmission gear 41 to drive the pressure roller 2 to rotate, so that one end of the pressure roller 2 is provided with the first transmission gear 41 to cooperate with the linkage mechanism 4 below, and the other end is provided with the first motor 11 to make the overall structure more orderly and compact.

[0079] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automated production line for packaging boxes, characterized in that: include: An unwinding mechanism (91), a plurality of printing devices (92), a plurality of drying devices (93), a laminating device (94), a creasing device (95), a die-cutting device (96) and a transmission device (98); The unwinding mechanism (91) is provided with a roll of rolled paper and is arranged thereon. The roll of rolled paper is outputted in the form of a continuous paper tape by rotating under the drive of a transmission device (98). The paper tape passes through various printing devices (92) to print and form a pattern layer. The paper tape passes through a drying device (93) to dry the ink printed on the paper tape. The paper tape passes through a coating device (94) to coat the surface of the pattern layer with a film for protection. The paper tape passes through an indentation device (95) to form a bending indentation on the paper tape. The paper tape passes through a die-cutting device (96) to cut a packaging box cardboard from the paper tape. The printing device (92) comprises a frame (1), a pressure roller (2) mounted on the frame (1), a printing roller (3), a linkage mechanism (4) and an active rotation mechanism (5); the pressure roller (2) is rotatably mounted on the frame (1); the linkage mechanism (4) comprises a first transmission gear (41), a second transmission gear (42), a second linkage shaft (43), a third linkage shaft (44), a first shaft connection structure (45), an eccentric wheel (46) and a support seat (47); the axial directions of the second linkage shaft (43) and the third linkage shaft (44) are parallel to the axial direction of the pressure roller (2) and are respectively located at the printing roller (3) and the rotation axis of the pressure roller (2). The printing roller (3) and the printing roller (3) are rotatably mounted on the frame (1); a telescopic universal coupling (6) is provided between the second linkage shaft (43) and the printing roller (3) and between the third linkage shaft (44) and the printing roller (3) to enable the printing roller (3) to approach or move away from the pressing roller (2); the first transmission gear (41) is fixedly arranged at one axial end of the pressing roller (2); the second transmission gear (42) is rotatably mounted on the outer periphery of the second linkage shaft (43); the first transmission gear (41) and the second transmission gear (42) are meshed; the first coupling structure (45) comprises a coupling slide seat (451) and a first cylinder; The shaft coupling slide (451) is slidably disposed on the second linkage shaft (43) and is synchronously rotated with the second linkage shaft (43); the first cylinder is used to drive the shaft coupling slide (451) to slide; the second transmission gear (42) is provided with a first shaft coupling portion (421) at one end thereof facing the shaft coupling slide (451); the shaft coupling slide (451) is provided with a second shaft coupling portion (4511) at one end thereof facing the second transmission gear (42); the shaft coupling slide (451) slides so that the first shaft coupling portion (421) and the second shaft coupling portion (4511) cooperate to realize the second transmission gear (42) and the shaft coupling slide (451). 1) synchronous rotation, the coupling slide (451) slides to disengage the first coupling part (421) and the second coupling part (4511) to release the synchronous rotation of the second transmission gear (42) and the coupling slide (451), the active rotation structure is used to drive the third linkage shaft (44) to rotate circumferentially, the eccentric wheel (46) is fixedly arranged on the printing roller (3), the support seat (47) is arranged on the frame (1) and is located below the eccentric wheel (46) to support the eccentric wheel (46), and the printing roller (3) rotates and approaches or moves away from the pressure roller (2) under the cooperation of the eccentric wheel (46) and the support seat (47).

2. The automated packaging production line according to claim 1, characterized in that: The frame (1) is also provided with an ink pool (81) and an inkjet printer (82); The ink pool (81) is located below the printing roller (3) and the bottom portion of the printing roller (3) is immersed in the ink pool (81) so that the ink in the ink pool (81) adheres to the surface of the printing roller (3); The inkjet device (82) is used to absorb the ink in the ink pool (81) and spray the ink toward the surface of the printing roller (3) so that the ink adheres to the surface of the printing roller (3).

3. The automated packaging production line according to claim 1, characterized in that: The linkage mechanism (4) further comprises a lifting mechanism (48), wherein the lifting mechanism (48) is arranged on the frame (1) and is used to lift the support seat (47).

4. The automated packaging production line according to claim 1 or 3, characterized in that: The linkage mechanism (4) further comprises a third transmission gear (49) and a transmission assembly (7); the third transmission gear (49) is rotatably mounted on the outer periphery of the second linkage shaft (43); the second transmission gear (42) and the third transmission gear (49) are located at two ends of a shaft coupling slide (451); a third shaft coupling portion (491) is provided at one end of the third transmission gear (49) facing the shaft coupling slide (451); a fourth shaft coupling portion (4512) is provided at one end of the shaft coupling slide (451) facing the third transmission gear (49); The third connecting shaft (491) and the fourth connecting shaft (4512) are shifted to make the third connecting shaft (491) and the fourth connecting shaft (4512) cooperate to achieve the synchronous rotation of the third transmission gear (49) and the connecting shaft slide (451); the connecting shaft slide (451) slides to make the third connecting shaft (491) and the fourth connecting shaft (4512) disengage to release the synchronous rotation of the third transmission gear (49) and the connecting shaft slide (451); the transmission assembly (7) is used to mesh the second transmission gear (42) and the third transmission gear (49) and make the rotation directions of the second transmission gear (42) and the third transmission gear (49) opposite.

5. The automated packaging production line according to claim 4, characterized in that: The shaft coupling slide seat (451) has a first mating state, a second mating state and a third mating state; In the first mating state, the first coupling portion (421) and the second coupling portion (4511) are mated, and the third coupling portion (491) and the fourth coupling portion (4512) are disengaged; In the second mating state, the first coupling portion (421) and the second coupling portion (4511) are disengaged, and the third coupling portion (491) and the fourth coupling portion (4512) are disengaged; In the third mating state, the first coupling portion (421) and the second coupling portion (4511) are disengaged, and the third coupling portion (491) and the fourth coupling portion (4512) are mated.

6. The automated packaging production line according to claim 4, characterized in that: The transmission assembly (7) comprises a transmission housing seat and a first transmission shaft (71), a second transmission shaft (72), a fourth transmission gear (73), a fifth transmission tooth (74), a sixth transmission gear (75), and a seventh transmission tooth (76) arranged in the transmission housing seat, wherein the first transmission shaft (71) and the second transmission shaft (72) are rotatably mounted on the transmission housing seat, the fourth transmission gear (73) and the fifth transmission tooth (74) are fixedly arranged on the first transmission shaft (71), the sixth transmission gear (75) and the seventh transmission tooth (76) are fixedly arranged on the second transmission shaft (72), the fourth transmission gear (73) is meshed with the second transmission gear (42), the fifth transmission tooth (74) is meshed with the sixth transmission gear (75), and the seventh transmission tooth (76) is meshed with the third transmission gear (49); The transmission housing seat is detachably arranged on the frame (1).

7. The automated packaging production line according to claim 6, characterized in that: The first transmission gear (41), the second transmission gear (42), and the fourth transmission gear (73) are spur gears or helical gears, and the third transmission gear (49), the fifth transmission gear (74), the sixth transmission gear (75), and the seventh transmission gear (76) are bevel gears or bevel gears; The first transmission shaft (71) and the second linkage shaft (43) are arranged in parallel, and the second transmission shaft (72) and the second linkage shaft (43) are arranged in perpendicularity.

8. The automated packaging production line according to claim 4, characterized in that: The outer circumference of the first shaft connecting portion (421) and the third shaft connecting portion (491) is provided with a plurality of shaft connecting slots (85) arranged in a circumferential direction; the second shaft connecting portion (4511) and the fourth shaft connecting portion (4512) are cylindrically shaped to match the outer circumference of the first shaft connecting portion (421) and the third shaft connecting portion (491); the inner circumference of the second shaft connecting portion (4511) and the fourth shaft connecting portion (4512) is provided with a plurality of shaft connecting strips (86); Each of the shaft coupling slots (85) and shaft coupling inserts (86) is in the shape of a long strip extending along the axial direction of the second linkage shaft (43); Each of the shaft coupling slots (85) is provided with an insertion opening (851) for inserting a shaft coupling inserting strip (86), and each of the insertion openings (851) is arranged in an expanded manner; each of the shaft coupling inserting strips (86) is provided with an insertion end (861) for inserting into the shaft coupling slot (85), and each of the insertion ends (861) is arranged in a contracted manner.

9. The automated packaging production line according to claim 1, characterized in that: The active rotation mechanism (5) comprises a matching slide (51), a second cylinder (52), a second motor (53), a first connecting disk (54), and a second connecting disk (55); the matching slide (51) is arranged on the frame (1) to slide along the axial direction of the third linkage shaft (44); the second cylinder (52) is used to drive the matching slide (51) to slide; the second motor (53) is fixedly arranged on the matching slide (51); the first connecting disk (54) is fixedly arranged on the third linkage shaft (44); the second connecting disk (55) is fixedly arranged on the output shaft of the second motor (53); a first latching tooth portion (541) is arranged circumferentially on one side of the first connecting disk (54) facing the second connecting disk (55); and a second latching tooth portion (551) is arranged circumferentially on one side of the second connecting disk (55) facing the first connecting disk (54); The second cylinder (52) drives the matching slide seat (51) to slide so that the first connecting disk (54) and the second connecting disk (55) are engaged with each other through the first engaging tooth portion (541) and the second engaging tooth portion (551), thereby realizing synchronous rotation of the output shaft of the second motor (53) and the third linkage shaft (44); The second cylinder (52) drives the matching slide seat (51) to slide so as to separate the first connection disk (54) and the second connection disk (55) so as to achieve the disengagement of the output shaft of the second motor (53) and the third linkage shaft (44).

10. The automated packaging production line according to any one of claims 1 to 9, characterized in that: A first motor (11) is arranged on the frame (1), and an output shaft of the first motor (11) is connected to an end of the pressure roller (2) away from the first transmission gear (41) to drive the pressure roller (2) to rotate.

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