Environment-friendly ink-jet coding equipment for tobacco logistics packaging

Abstract

The invention belongs to the technical field of coding equipment. The problem that in the prior art, sprayed codes of special-shaped cigarette packets are easily printed at the bending transition positions of the top faces of the cigarette packets, and consequently display is not clear is solved. According to the environment-friendly ink-jet coding equipment for tobacco logistics packaging, a stack type sensing mechanism and a code spraying mechanism are sequentially arranged on a mounting frame in the conveying direction of a conveying rail, and the code spraying mechanism can move up and down relative to the mounting frame and can horizontally move in the width direction of the conveying rail; the stack type sensing mechanism comprises a mounting seat capable of moving up and down relative to the mounting frame, a plurality of displacement sensors are arranged on the mounting seat, detection rods of the displacement sensors are vertically arranged and connected to the mounting seat in an up-down moving mode, and the bottoms of the detection rods are connected with a horizontally-arranged pressing plate. The detection rods are further sleeved with reset springs located between the mounting base and the pressing plates, and the multiple pressing plates are arranged side by side in the width direction of the conveying track at intervals. The code spraying device has the advantage of being capable of ensuring clear code spraying display.

Description

Technical Field

[0001] The present invention belongs to the technical field of coding devices, and relates to an inkjet coding device for tobacco logistics packaging that is green and environmentally friendly. Background Art

[0002] Currently, after a merchant places an order, the tobacco logistics distribution center conveys and sorts the cartons of cigarettes through a production line to obtain cartons of cigarettes that match the variety and quantity of the order. At the same time, the obtained cartons of cigarettes are palletized in a way that each five cartons form a layer. Then, the palletized cartons of cigarettes are wrapped with a film and sealed to obtain a carton of cigarette package. Finally, a label is pasted on the carton of cigarette package. Generally, the label is pasted manually or by pneumatic control to push a cylinder to press the label downward on the already film-covered and packaged carton of cigarette package. The label records content such as the delivery route and sequence, customer information, and order details.

[0003] In recent years, in order to respond to green production and sustainable development, the tobacco logistics distribution center has begun to recycle the film-wrapped and sealed packaging of cartons of cigarettes (usually recycled during the next delivery or collected in a centralized manner when the quantity of film-wrapped and sealed packaging accumulates). However, because the label is pressed and adhered to the film-wrapped and sealed packaging manually or by a cylinder, and the adhesive of the label has strong adhesiveness in the dry state, the label is firmly fixed on the film-wrapped and sealed packaging of the carton of cigarette, resulting in difficulty in completely tearing off the label from the film-wrapped and sealed packaging subsequently. However, the residue and presence of the label will affect the recycling of the film-wrapped and sealed packaging.

[0004] To solve the problem that the film-wrapped and sealed packaging cannot be recycled due to the difficulty in tearing off the label, currently, the tobacco logistics distribution center has begun to try to use inkjet printing to form inkjet codes on the carton of cigarette package that are consistent with the label content. In this way, there is no need to perform the operation of tearing off the label after the film-wrapped and sealed packaging is recycled, which is more green and environmentally friendly. However, since the number of cartons of cigarettes ordered by different merchants is different, the number of cartons of cigarettes in different carton of cigarette packages is also different. And since the common practice is to palletize the cartons of cigarettes in a way that each five cartons form a layer, only when the number of cartons of cigarettes in the carton of cigarette package is a multiple of five, the top surface of the carton of cigarette package will be flat. Otherwise, an irregular carton of cigarette package will be obtained, that is, the top surface of the carton of cigarette package will be uneven (the heights of the five columns of cartons of cigarettes in the carton of cigarette package are not uniform). And if there is a height difference between adjacent cartons of cigarettes in the carton of cigarette package, a stepped bending transition will be formed, making part of the inkjet code likely to be printed at the bending transition position on the top surface of the carton of cigarette package, resulting in the information of the inkjet code not being able to clearly display and record content such as the delivery route and sequence, customer information, and order details. Summary of the Invention

[0005] The object of the present invention is to address the above problems existing in the prior art and propose an inkjet coding device for tobacco logistics packaging that is green and environmentally friendly. The technical problem to be solved by the present invention is to solve the problem that the inkjet code of the existing special-shaped cigarette packs is easily printed at the position where the top surface of the cigarette pack bends and transitions, resulting in unclear display.

[0006] The object of the present invention can be achieved by the following technical solutions:

[0007] An inkjet coding device for tobacco logistics packaging that is green and environmentally friendly, including a conveying track, and an installation frame is connected to the conveying track. It is characterized in that a stack type sensing mechanism and an inkjet coding mechanism are sequentially arranged on the installation frame along the conveying direction of the conveying track. The inkjet coding mechanism can move up and down relative to the installation frame and can horizontally move along the width direction of the conveying track. The stack type sensing mechanism includes an installation seat that can move up and down relative to the installation frame. A number of displacement sensors are arranged on the installation seat. The detection rods of the displacement sensors are vertically arranged and are connected to the installation seat so as to be movable up and down. The bottom of the detection rod is connected with a horizontally arranged pressing plate. A return spring is also sleeved on the detection rod and is located between the installation seat and the pressing plate. A number of the pressing plates are arranged side by side and at intervals along the width direction of the conveying track.

[0008] This inkjet coding device for tobacco logistics packaging that is green and environmentally friendly finds the highest height position (i.e., the best inkjet area) of the cigarette packs by setting the stack type sensing mechanism. The inkjet coding mechanism can move to the upper part of the best inkjet area in advance and perform the coding operation. There will be no stepped bending transition in the column of cigarettes with the highest height in the cigarette packs, thus avoiding the inkjet code being printed at the position where the top surface of the cigarette pack bends and transitions, and further solving the problem that the inkjet code of the existing special-shaped cigarette packs is easily printed at the position where the top surface of the cigarette pack bends and transitions, resulting in unclear display.

[0009] Specifically, during use, the cigarette packs after being packaged and sealed with film by the packaging machine are conveyed to this inkjet coding device for tobacco logistics packaging that is green and environmentally friendly through the conveying track. A controller that is electrically connected to the inkjet coding mechanism and a number of the displacement sensors is also installed on the installation frame. And the controller can control the movement and coding of the inkjet coding mechanism according to the sensing signals of a number of the displacement sensors. The cigarette packs continue to move forward and first enter below the stack type sensing mechanism. The controller controls the conveying track to stop, so that the cigarette packs stop moving forward. At this time, the cigarette packs are directly below the stack type sensing mechanism. A number of the pressing plates on the stack type sensing mechanism are respectively directly above a number of columns of cigarettes in the cigarette packs.

[0010] Next, the mounting base moves downward until all the pressing plates on the stack type sensing mechanism come into contact with the cigarette packs. At this time, the controller obtains the optimal inkjet area by comparing the detection signals of several displacement sensors. Specifically, the displacement sensor detection rod above the column of cigarette packs with the highest height has the largest movement. Therefore, the column of cigarette packs corresponding to the detection rod with the largest movement among several displacement sensors is the optimal inkjet area (the optimal inkjet area is above the column of cigarette packs with the highest height among the five columns of cigarette packs in the cigarette pack, and there is no stepped bending transition on the top surface of the column of cigarette packs with the highest height in the cigarette pack). Then, the controller controls the inkjet coding mechanism to move and reach above the optimal inkjet area in advance.

[0011] Then, the controller controls the conveying track to restart, and the cigarette packs continue to move forward. When the cigarette packs are conveyed below the inkjet coding mechanism, the controller controls the inkjet coding mechanism to perform inkjet coding operation on the cigarette packs (during the inkjet coding operation, there is a gap of about 5 cm between the inkjet coding mechanism and the cigarette packs, and the cigarette packs move forward normally during the inkjet coding operation). The inkjet code is printed on the column of cigarette packs with the highest height among the five columns of cigarette packs in the cigarette pack, so as to avoid the inkjet code being printed at the position of the bending transition on the top surface of the cigarette pack, and further solve the problem that the inkjet code of the existing special-shaped cigarette pack is easily printed at the position of the bending transition on the top surface of the cigarette pack, resulting in unclear display.

[0012] In the above inkjet coding device for green environmental protection tobacco logistics packaging, the inkjet coding mechanism includes a frame that can move up and down relative to the mounting frame. The frame is connected with an inkjet rack that can swing up and down. A roller is installed on one side of the inkjet rack close to the stack type sensing mechanism. The roller is horizontally arranged along the width direction of the conveying track, and the height of the roller is lower than the height of the inkjet rack. This enables the inkjet coding mechanism to still complete the coding operation when the position of the inkjet coding mechanism is relatively low.

[0013] In the above-mentioned inkjet coding device for green environmental protection tobacco logistics packaging, the vertical beams of the frame and the inkjet rack are connected through an anti-collision buffer assembly located above the rollers. There is a spacing between the cross beam of the frame and the inkjet rack. The anti-collision buffer assembly includes two first swing rods and two second swing rods arranged oppositely. The first swing rods and the second swing rods are arranged vertically opposite to each other one by one. The ends of the two first swing rods are respectively connected through a first rotating shaft and a second rotating shaft. The ends of the two second swing rods are respectively connected through a third rotating shaft and a fourth rotating shaft. The vertical beams of the frame are respectively connected to the first rotating shaft and the third rotating shaft through horizontally arranged bolts. The inkjet rack is respectively connected to the second rotating shaft and the fourth rotating shaft through horizontally arranged bolts. And the height of the first rotating shaft is higher than the height of the second rotating shaft, and the height of the third rotating shaft is higher than the height of the fourth rotating shaft. A parallelogram structure is respectively formed between the first swing rod, the second swing rod, the vertical beam of the frame and the inkjet rack on the same side. When the anti-collision buffer assembly is not in use, the inkjet rack can maintain a certain stability by itself. In addition, since the vertical beams of the frame are respectively connected to the first rotating shaft and the third rotating shaft through horizontally arranged bolts, and the inkjet rack is respectively connected to the second rotating shaft and the fourth rotating shaft through horizontally arranged bolts, the random shaking of the inkjet rack can be avoided, and the stability of inkjet printing can be ensured. At the same time, when the position of the coding mechanism is relatively low, since the rollers are installed on the inkjet rack, one side of the inkjet rack close to the rollers is connected to the frame through the anti-collision buffer assembly, and there is a spacing between the inkjet rack and the cross beam of the frame. In addition, the side of the inkjet rack far from the rollers is arranged in a suspended manner. When the cigarette packet contacts the rollers, the cigarette packet can drive the rollers to swing the inkjet rack upward to the upper part of the cigarette packet while moving forward. At the same time, the rollers contact the top surface of the cigarette packet and support the inkjet rack, so that the coding mechanism can still complete the coding operation.

[0014] In the above-mentioned inkjet coding device for green environmental protection tobacco logistics packaging, the fourth rotating shaft is located above the rollers. Anti-collision rubber wheels are respectively arranged between the first swing rod and the second swing rod on the same side of the frame. The two anti-collision rubber wheels are respectively installed on the vertical beams of the frame and are respectively abutted against the first swing rod on the same side. On the one hand, the anti-collision rubber wheels can avoid the collision between the first swing rod and the second swing rod. At the same time, the anti-collision rubber wheels can also play a role in limiting the swing of the first swing rod. Similarly, on the one hand, the rollers can avoid the collision between the second swing rod and the inkjet rack. At the same time, the rollers can also play a role in limiting the swing of the second swing rod.

[0015] In the above-mentioned inkjet coding device for green environmental protection tobacco logistics packaging, first reset buffer springs are respectively arranged between the first swing rod and the second swing rod on the same side of the frame, and second reset buffer springs are also respectively arranged between the cross beam of the frame and the two first swing rods. Both the first reset buffer spring and the second reset buffer spring can play the roles of buffering and resetting, so as to better realize the upward swing and reset of the inkjet rack of the coding mechanism. At the same time, when the position of the coding mechanism is relatively low, the cigarette packets will not be damaged when the rollers contact the cigarette packets.

[0016] In the above-mentioned inkjet coding device for green environmental protection tobacco logistics packaging, an anti-collision air cylinder is also installed on the inkjet rack. The output shaft of the anti-collision air cylinder is vertically arranged and connected with an anti-collision rubber block; rubber blocks with the same thickness are respectively attached and connected to the bottoms of several pressing plates. The anti-collision rubber block can prevent the inkjet rack from colliding with the frame when swinging upward. The anti-collision air cylinder can adjust the up and down position of the anti-collision rubber block, so that the anti-collision rubber block can better achieve anti-collision; while the rubber block can prevent the stack type induction mechanism from colliding hard with the cigarette packets and damaging the cigarette packets during operation.

[0017] In the above-mentioned inkjet coding device for green environmental protection tobacco logistics packaging, the conveying track includes a conveying motor and a plurality of conveying rollers that are synchronously rotated by the conveying motor and are arranged at intervals. The conveying track is installed with an encoder through a spring bracket. The rotating shaft of the encoder is horizontally arranged and connected with a wear-resistant wheel. The wear-resistant wheel abuts against one of the conveying rollers and is driven to rotate by the conveying roller. During use, the conveying motor and the encoder are respectively electrically connected to a controller installed on the mounting frame. By monitoring and recording the rotation speed and rotation direction of the conveying rollers in real time through the encoder, the controller installed on the mounting frame can control the rotation speed and direction of the conveying motor to accurately control the position and moving speed of the cigarette packets, so as to achieve accurate coding operation.

[0018] In the above-mentioned inkjet coding device for tobacco logistics packaging that is green and environmentally friendly, two horizontally opposite guide rods are further installed on the conveying track. A horn-shaped material passing channel is formed between the two guide rods. A stop rod and a top material cylinder are respectively installed on both sides of the conveying track and are both located behind the material passing channel. A top material plate opposite to the stop rod is connected to the output shaft of the top material cylinder. A plurality of pressing plates are located between the top material plate and the stop rod, and the top material plate can move along the direction perpendicular to the conveying direction of the conveying track under the drive of the top material cylinder. During use, the top material cylinder is also electrically connected to the controller on the mounting frame. When the cigarette carton passes through the material passing channel, the posture of the cigarette carton can be adjusted, so that the cigarette carton continues to move forward with a square posture. The top material cylinder can drive the top material plate to move along the direction perpendicular to the conveying direction of the conveying track until the top material plate presses the cigarette carton against the stop rod. At this time, the cigarette carton is directly below the stack type sensing mechanism, which is beneficial for the stack type sensing mechanism to find the position of the best inkjet area.

[0019] In the above-mentioned inkjet coding device for tobacco logistics packaging that is green and environmentally friendly, a first photoelectric sensor and a second photoelectric sensor are further installed on the conveying track. The emitter and receiver of the first photoelectric sensor are oppositely arranged and are respectively located beside the top material cylinder and adjacent to the stop rod. The emitter and receiver of the second photoelectric sensor are oppositely arranged on both sides of the coding mechanism. During use, the first photoelectric sensor and the second photoelectric sensor are respectively electrically connected to the controller. The first photoelectric sensor and the second photoelectric sensor can monitor the position of the cigarette carton in real time, so that the stack type sensing mechanism can better find the position of the best inkjet area, and at the same time enable the coding mechanism to better perform the coding operation.

[0020] In the above-mentioned inkjet coding device for tobacco logistics packaging that is green and environmentally friendly, a first cylinder, a driving motor, a driven pulley and a width slide rail of the conveying track are respectively installed on the mounting frame. The output shaft of the first cylinder is vertically downward and is connected to the mounting seat. The mounting seat is also connected to a first moving guide rod vertically inserted into the mounting frame. A sliding seat is slidably connected to the slide rail through a slider. A driving pulley is connected to the output shaft of the driving motor. A synchronous belt is sleeved between the driving pulley and the driven pulley. The sliding seat is connected to the synchronous belt. A second cylinder is installed on the sliding seat. The output shaft of the second cylinder is vertically downward and is connected to the cross beam of the frame. The cross beam of the frame is connected to a second moving guide rod vertically inserted into the sliding seat. The matching structure of the first cylinder and the first moving guide rod can achieve the accuracy of the vertical movement of the stack type sensing mechanism relative to the mounting frame. The structures such as the slide rail, the driving motor and the synchronous belt can achieve the accuracy of the horizontal movement of the coding mechanism along the width direction of the conveying track. The matching structure of the second cylinder and the second moving guide rod can achieve the accuracy of the vertical movement of the coding mechanism relative to the mounting frame.

[0021] Compared with the prior art, the advantages of this environmentally friendly inkjet coding device for tobacco logistics packaging are as follows: 1. This environmentally friendly inkjet coding device for tobacco logistics packaging finds the highest height position (i.e., the optimal inkjet area) of the cigarette packs by setting up a stack type sensing mechanism. The coding mechanism can move to the upper part of the optimal inkjet area in advance and perform the coding operation. There will be no stepped bending transition in the column of cigarettes with the highest height in the cigarette packs, thus avoiding the inkjet code being printed at the bending transition position on the top surface of the cigarette packs, and further solving the problem that the inkjet code of the existing special-shaped cigarette packs is easily printed at the bending transition position on the top surface of the cigarette packs, resulting in unclear display.

[0022] 2. An anti-collision buffer component is also provided on the coding mechanism of this environmentally friendly inkjet coding device for tobacco logistics packaging, so that when the actual position of the coding mechanism is slightly lower than the height of the cigarette packs, the coding mechanism can still complete the coding operation without damaging the cigarette packs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a three-dimensional structural schematic diagram of this environmentally friendly inkjet coding device for tobacco logistics packaging.

[0024] Figure 2 is a front structural schematic diagram of this environmentally friendly inkjet coding device for tobacco logistics packaging.

[0025] Figure 3 is a side structural schematic diagram when this environmentally friendly inkjet coding device for tobacco logistics packaging is in use.

[0026] Figure 4 is a partial three-dimensional structural schematic diagram when this environmentally friendly inkjet coding device for tobacco logistics packaging is viewed from below.

[0027] Figure 5 is a front structural schematic diagram of the coding mechanism of this environmentally friendly inkjet coding device for tobacco logistics packaging.

[0028] Figure 6 is a three-dimensional structural schematic diagram of the coding mechanism of this environmentally friendly inkjet coding device for tobacco logistics packaging.

[0029] Figure 7 is an exploded view of the coding mechanism of this environmentally friendly inkjet coding device for tobacco logistics packaging.

[0030] In the figure, 1 is a conveying track; 1a is a conveying motor; 1b is a conveying roller; 2 is a mounting bracket; 3 is a stack type sensing mechanism; 3a is a mounting base; 3b is a displacement sensor; 3b1 is a detection rod; 3c is a pressing plate; 3d is a return spring; 3e is a rubber block; 3f is a first cylinder; 3g is a first moving guide rod; 4 is an inkjet coding mechanism; 4a is a frame; 4a1 is a vertical beam; 4a2 is a cross beam; 4b is an inkjet rack; 4c is a roller; 4d is an anti-collision rubber wheel; 5 is an anti-collision buffer assembly; 5a is a first swing rod; 5b is a second swing rod; 5c is a first rotating shaft; 5d is a second rotating shaft; 5e is a third rotating shaft; 5f is a fourth rotating shaft; 5g is a first return buffer spring; 5h is a second return buffer spring; 6 is an anti-collision cylinder; 7 is an anti-collision rubber block; 8 is a spring support; 9 is an encoder; 10 is a wear-resistant wheel; 11 is a material guiding rod; 11a is a material passing channel; 12 is a material blocking rod; 13 is a material ejecting cylinder; 14 is a material ejecting plate; 15 is a first photoelectric sensor; 16 is a second photoelectric sensor; 17 is a slide rail; 18 is a driving motor; 19 is a driven pulley; 20 is a slider; 21 is a sliding seat; 22 is a driving pulley; 23 is a synchronous belt; 24 is a second cylinder; 25 is a second moving guide rod.

[0031] Figure 3 The item indicated by the dotted line below the stack type sensing mechanism is a cigarette pack. Specific embodiments

[0032] The following are specific embodiments of the present invention and in combination with the accompanying drawings, the technical solutions of the present invention will be further described, but the present invention is not limited to these embodiments.

[0033] An inkjet coding device for tobacco logistics packaging that is green and environmentally friendly, referring to Figures 1 - 7 , includes a conveying track 1, characterized in that a mounting bracket 2 is connected to the conveying track 1, a stack type sensing mechanism 3 and an inkjet coding mechanism 4 are sequentially arranged on the mounting bracket 2 along the conveying direction of the conveying track 1, the inkjet coding mechanism 4 can move up and down relative to the mounting bracket 2 and can move horizontally along the width direction of the conveying track 1, the stack type sensing mechanism 3 includes a mounting base 3a that can move up and down relative to the mounting bracket 2, a plurality of displacement sensors 3b are arranged on the mounting base 3a, the detection rods 3b1 of the displacement sensors 3b are vertically arranged and are connected to the mounting base 3a so as to be movable up and down, the bottom of the detection rod 3b1 is connected with a horizontally arranged pressing plate 3c, a return spring 3d is also sleeved on the detection rod 3b1 and is located between the mounting base 3a and the pressing plate 3c, and a plurality of the pressing plates 3c are arranged side by side and at intervals along the width direction of the conveying track 1. When in use, a controller electrically connected to the inkjet coding mechanism 4 and a plurality of the displacement sensors 3b is also installed on the mounting bracket 2, and the controller can control the movement and coding of the inkjet coding mechanism 4 according to the induction signals of a plurality of the displacement sensors 3b.

[0034] Reference Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 and Figure 7 ,Specifically, the inkjet coding mechanism 4 includes a frame 4a that can move up and down relative to the mounting frame 2. The frame 4a is connected with an inkjet rack 4b in a swingable manner up and down. A roller 4c is installed on one side of the inkjet rack 4b close to the stack type sensing mechanism 3. The roller 4c is horizontally arranged along the width direction of the conveying track 1, and the height of the roller 4c is lower than the height of the inkjet rack 4b.

[0035] Reference Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 and Figure 7 ,More specifically, the vertical beam 4a1 of the frame 4a and the inkjet rack 4b are connected by a collision prevention and buffer assembly 5 located above the roller 4c. There is a spacing between the cross beam 4a2 of the frame 4a and the inkjet rack 4b. The collision prevention and buffer assembly 5 includes two first swing rods 5a and two second swing rods 5b that are relatively arranged respectively. The first swing rods 5a and the second swing rods 5b are arranged one above the other. The ends of the two first swing rods 5a are respectively connected by a first rotating shaft 5c and a second rotating shaft 5d. The ends of the two second swing rods 5b are respectively connected by a third rotating shaft 5e and a fourth rotating shaft 5f. The vertical beam 4a1 of the frame 4a is respectively connected to the first rotating shaft 5c and the third rotating shaft 5e by horizontally arranged bolts. The inkjet rack 4b is respectively connected to the second rotating shaft 5d and the fourth rotating shaft 5f by horizontally arranged bolts. And the height of the first rotating shaft 5c is higher than the height of the second rotating shaft 5d. The height of the third rotating shaft 5e is higher than the height of the fourth rotating shaft 5f.

[0036] In this embodiment, it is preferred that the fourth rotating shaft 5f is located above the roller 4c. Anti-collision rubber wheels 4d are respectively arranged between the first swing rods 5a and the second swing rods 5b on the same side of the frame 4a. The two anti-collision rubber wheels 4d are also respectively installed on the vertical beam 4a1 of the frame 4a and are respectively abutted against the first swing rods 5a on the same side.

[0037] Reference Figure 5 、 Figure 6 and Figure 7 ,Furthermore, first reset buffer springs 5g are respectively arranged between the first swing rods 5a and the second swing rods 5b on the same side of the frame 4a. Second reset buffer springs 5h are also respectively arranged between the cross beam 4a2 of the frame 4a and the two first swing rods 5a.

[0038] Reference Figure 5 、 Figure 6 and Figure 7, Further, furthermore, an anti-collision air cylinder 6 is also installed on the inkjet rack 4b, and the output shaft of the anti-collision air cylinder 6 is vertically arranged and connected with an anti-collision rubber block 7; rubber blocks 3e with the same thickness are respectively attached to the bottoms of several pressing plates 3c.

[0039] Refer to Figure 2 , Figure 3 and Figure 4 , Specifically, the conveying track 1 includes a conveying motor 1a and several conveying rollers 1b that are driven by the conveying motor 1a to rotate synchronously and are arranged at intervals. The conveying track 1 is installed with an encoder 9 through a spring bracket 8. The rotating shaft of the encoder 9 is horizontally arranged and connected with a wear-resistant wheel 10. The wear-resistant wheel 10 abuts against one of the conveying rollers 1b and is driven to rotate by this conveying roller 1b. During use, the conveying motor 1a and the encoder 9 are respectively electrically connected to the controller.

[0040] Refer to Figure 1 , Figure 2 and Figure 3 , More specifically, two guiding rods 11 arranged horizontally and oppositely are also installed on the conveying track 1. A horn-shaped material-passing channel 11a is formed between the two guiding rods 11. A retaining rod 12 and a material-pushing air cylinder 13 are respectively installed on both sides of the conveying track 1 and are both located behind the material-passing channel 11a. A material-pushing plate 14 opposite to the retaining rod 12 is connected to the output shaft of the material-pushing air cylinder 13. Several pressing plates 3c are located between the material-pushing plate 14 and the retaining rod 12, and the material-pushing plate 14 can move along the direction perpendicular to the conveying direction of the conveying track 1 under the drive of the material-pushing air cylinder 13. During use, the material-pushing air cylinder 13 is electrically connected to the controller.

[0041] In this embodiment, it is preferred that a first photoelectric sensor 15 and a second photoelectric sensor 16 are also installed on the conveying track 1. The transmitter and receiver of the first photoelectric sensor 15 are arranged oppositely and are respectively located beside the material-pushing air cylinder 13 and adjacent to the retaining rod 12. The transmitter and receiver of the second photoelectric sensor 16 are arranged oppositely on both sides of the coding mechanism. During use, the first photoelectric sensor 15 and the second photoelectric sensor 16 are respectively electrically connected to the controller.

[0042] Refer to Figure 1 , Figure 2 and Figure 3, More specifically, a first air cylinder 3f, a driving motor 18, a driven pulley 19, and a slide rail 17 perpendicular to the conveying direction of the conveying track 1 are respectively installed on the mounting frame 2. The output shaft of the first air cylinder 3f is arranged vertically downward and connected to the mounting seat 3a. A first moving guide rod 3g vertically inserted into the mounting frame 2 is also connected to the mounting seat 3a. A sliding seat 21 is slidably connected to the slide rail 17 through a slider 20. A driving pulley 22 is connected to the output shaft of the driving motor 18. A synchronous belt 23 is sleeved between the driving pulley 22 and the driven pulley 19. The sliding seat 21 is connected to the synchronous belt 23. A second air cylinder 24 is installed on the sliding seat 21. The output shaft of the second air cylinder 24 is arranged vertically downward and connected to the cross beam 4a2 of the frame 4a. A second moving guide rod 25 vertically inserted into the sliding seat 21 is connected to the cross beam 4a2 of the frame 4a. In this embodiment, it is preferably set to have two slide rails 17, two driving pulleys 22, two driven pulleys 19, and two synchronous belts 23. The two slide rails 17 and the two driven pulleys 19 are respectively installed on both sides of the sliding seat 21. The two driving pulleys 22 are respectively located on both sides of the sliding seat 21 and are simultaneously connected to the output shaft of the driving motor 18. The two synchronous belts 23 are respectively sleeved on the driving pulley 22 and the driven pulley 19 on the same side and are respectively connected to both sides of the sliding seat 21.

[0043] The working principle of the inkjet coding device for green environmental protection tobacco logistics packaging is described below: During use, the cigarette cartons after being shrink-wrapped and sealed by a packaging machine (not shown in the figure) are conveyed to the inkjet coding device for green environmental protection tobacco logistics packaging through the conveying track 1. The cigarette cartons first pass through the feeding channel 11a formed by two guide rods 11, so that the cigarette cartons enter below the stack type sensing mechanism 3 in a square posture. At this time, the signal sent from the emitter of the first photoelectric sensor 15 to the receiver is blocked by the cigarette carton, and the receiver cannot receive the signal and triggers the first photoelectric sensor 15 to transmit an induction signal to the controller (not shown in the figure). The controller receives the induction signal and controls the conveying motor 1a to stop, the conveying roller 1b on the conveying track 1 stops rotating, and the cigarette cartons stop advancing. Then the controller controls the ejector cylinder 13 to drive the ejector plate 14 to move in a direction perpendicular to the conveying direction of the conveying track 1 until the ejector plate 14 presses the cigarette cartons against the stop rod 12. At this time, the cigarette cartons are located directly below the stack type sensing mechanism 3, and the rubber blocks 3e on the five pressing plates 3c of the stack type sensing mechanism 3 are respectively located directly above the five rows of cigarettes of the cigarette cartons.

[0044] Next, the controller controls the first cylinder 3f to drive the mounting seat 3a to move downward until the rubber blocks 3e on all the pressing plates 3c are in contact with the cigarette packs. At this time, the controller obtains the optimal inkjet area by comparing the detection signals of the five displacement sensors 3b. Specifically, the displacement sensor 3b detection rod 3b1 located above the column of cigarette packs with the highest height in the cigarette pack has the largest movement amount. Therefore, the optimal inkjet area can be obtained by comparing the movement amounts of the detection rods 3b1 of the five displacement sensors 3b. The column (or columns) of cigarette packs corresponding to the detection rod 3b1 with the largest movement amount among the five displacement sensors 3b is the optimal inkjet area (the optimal inkjet area is above the column (or columns) of cigarette packs with the highest height among the five columns of cigarette packs in the cigarette pack, and there is no stepped bending transition on the top surface of the column (or columns) of cigarette packs with the highest height in the cigarette pack). Refer to Figure 3 , the displacement sensor 3b detection rod 3b1 located above the column of cigarette packs with the highest height (among the five columns of cigarette packs) has the largest movement amount, and the column of cigarette packs with the highest height among the five columns of cigarette packs in the cigarette pack is the optimal inkjet area. Then, the controller controls the driving motor 18 to drive the inkjet coding mechanism 4 to move horizontally in a direction perpendicular to the conveying direction of the conveying track 1, and at the same time, the controller controls the second cylinder 24 to drive the inkjet coding mechanism 4 to move up and down relative to the mounting frame 2, so that the inkjet coding mechanism 4 reaches above the optimal inkjet area in advance.

[0045] Then, the controller controls the ejector cylinder 13 to reset. Next, the controller controls the conveying motor 1a to restart, and the conveying rollers 1b on the conveying track 1 rotate again, and the cigarette packs continue to move forward. When the cigarette packs are conveyed below the inkjet coding mechanism 4, the signal transmitted from the emitter to the receiver of the second photoelectric sensor 16 is blocked by the cigarette packs, and the receiver cannot receive the signal and triggers the second photoelectric sensor 16 to transmit an induction signal to the controller. The controller receives the induction signal and controls the inkjet coding mechanism 4 to perform inkjet coding operation on the cigarette packs (during the inkjet coding operation, there is a gap of about 5 cm between the inkjet coding mechanism 4 and the cigarette packs, and the cigarette packs move forward normally during the inkjet coding operation). The inkjet code is printed on the column of cigarette packs with the highest height among the five columns of cigarette packs in the cigarette pack, thus avoiding the inkjet code being printed at the position of the bending transition on the top surface of the cigarette pack, and further solving the problem that the inkjet code of the existing special-shaped cigarette packs is easily printed at the position of the bending transition on the top surface of the cigarette pack, resulting in unclear display.

[0046] It should be emphasized that an anti-collision buffer assembly 5 is also provided on the inkjet coding mechanism 4. When the actual position of the inkjet coding mechanism 4 is slightly lower than the height of the cigarette pack, the cigarette pack first contacts the roller 4c on the inkjet rack 4b. On the one hand, the roller 4c can avoid hard collision between the cigarette pack and the inkjet coding mechanism 4. On the other hand, when the cigarette pack moves forward, it can drive the roller 4c to swing the inkjet coding mechanism 4 upward to the upper side of the cigarette pack. The roller 4c contacts the top surface of the cigarette pack and supports the inkjet coding mechanism 4, enabling the inkjet coding mechanism 4 to still complete the coding operation. At the same time, the roller 4c is in rolling contact with the top surface of the cigarette pack. Coupled with the action of the first reset buffer spring 5g and the second reset buffer spring 5h, the roller 4c will not damage the cigarette pack. Specifically, the roller 4c is installed on the inkjet rack 4b. One side of the inkjet rack 4b close to the roller 4c is connected to the frame 4a through the anti-collision buffer assembly 5. There is a gap between the inkjet rack 4b and the cross beam 4a2 of the frame 4a. In addition, the side of the inkjet rack 4b far from the roller 4c is suspended. When the cigarette pack contacts the roller 4c, the cigarette pack can drive the roller 4c to swing the inkjet rack 4b upward to the upper side of the cigarette pack while moving forward (the anti-collision rubber block 7 can prevent the inkjet rack 4b from colliding with the frame 4a when swinging upward). At the same time, the roller 4c contacts the top surface of the cigarette pack and supports the inkjet rack 4b (multiple ink cartridges are provided on the inkjet rack 4b, which can realize inkjet coding printing of different colors), enabling the inkjet coding mechanism 4 to still complete the coding operation.

[0047] In addition, when the conveying track 1 is in the working state, the conveying roller 1b on the conveying track 1 can drive the wear-resistant wheel 10 to rotate to drive the encoder 9 to work. The encoder 9 monitors and records the rotation speed and rotation direction of the conveying roller 1b in real time, enabling the controller to precisely control the position and moving speed of the cigarette pack by controlling the rotation speed and direction of the conveying motor 1a, thereby realizing precise coding operation.

[0048] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art of the present invention can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0049] Although terms such as the conveying track 1, the conveying motor 1a, the conveying roller 1b, the mounting bracket 2, the stack type sensing mechanism 3, the mounting seat 3a, and the displacement sensor 3b are used more frequently herein, the possibility of using other terms is not excluded. The use of these terms is only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A green and environmentally friendly inkjet coding device for tobacco logistics packaging, comprising a conveying track (1), to which a mounting frame (2) is connected, characterized in that: The mounting frame (2) is provided with a stacking-type sensing mechanism (3) and a coding mechanism (4) in sequence along the conveying direction of the conveying track (1); the coding mechanism (4) can move up and down relative to the mounting frame (2) and can move horizontally along the width direction of the conveying track (1); the stacking-type sensing mechanism (3) comprises a mounting seat (3a) that can move up and down relative to the mounting frame (2); a plurality of displacement sensors (3b) are provided on the mounting seat (3a); a detection rod (3b1) of the displacement sensor (3b) is vertically arranged and connected to the mounting seat (3a) so as to be movable up and down; a horizontally arranged pressing plate (3c) is connected to the bottom of the detection rod (3b1); a return spring (3d) located between the mounting seat (3a) and the pressing plate (3c) is also sleeved on the detection rod (3b1); and a plurality of the pressing plates (3c) are arranged side by side and at intervals along the width direction of the conveying track (1).

2. According to claim 1, a green and environmentally friendly inkjet coding device for tobacco logistics packaging, characterized in that: The coding mechanism (4) comprises a frame (4a) that can move up and down relative to the mounting frame (2); the frame (4a) is connected to an inkjet frame (4b) in a manner that it can swing up and down; a roller (4c) is installed on a side of the inkjet frame (4b) close to the stack-type sensing mechanism (3); the roller (4c) is horizontally arranged along the width direction of the conveying track (1), and the height of the roller (4c) is lower than the height of the inkjet frame (4b).

3. The green and environmentally friendly inkjet coding equipment for tobacco logistics packaging according to claim 2 is characterized in that: The vertical beam (4a1) of the frame (4a) and the inkjet frame (4b) are connected via an anti-collision buffer assembly (5) located above the roller (4c); a spacing is provided between the horizontal beam (4a2) of the frame (4a) and the inkjet frame (4b); the anti-collision buffer assembly (5) comprises two first swing rods (5a) and two second swing rods (5b) which are arranged opposite to each other; the first swing rods (5a) and the second swing rods (5b) are arranged opposite to each other up and down, and the ends of the two first swing rods (5a) are connected via a first rotating shaft (5c) and a second rotating shaft (5d). The ends of the two second swing rods (5b) are connected respectively via a third rotating shaft (5e) and a fourth rotating shaft (5f); the vertical beam (4a1) of the frame (4a) is connected respectively to the first rotating shaft (5c) and the third rotating shaft (5e) via horizontally arranged bolts; the inkjet frame (4b) is connected respectively to the second rotating shaft (5d) and the fourth rotating shaft (5f) via horizontally arranged bolts; the height of the first rotating shaft (5c) is higher than the height of the second rotating shaft (5d); and the height of the third rotating shaft (5e) is higher than the height of the fourth rotating shaft (5f).

4. The green and environmentally friendly inkjet coding equipment for tobacco logistics packaging according to claim 3 is characterized in that: The fourth rotating shaft (5f) is located above the roller (4c), and anti-collision rubber wheels (4d) are respectively arranged between the first swing rod (5a) and the second swing rod (5b) on the same side of the frame (4a). The two anti-collision rubber wheels (4d) are also respectively mounted on the vertical beam (4a1) of the frame (4a) and are respectively arranged to abut against the first swing rod (5a) on the same side.

5. The green and environmentally friendly inkjet coding equipment for tobacco logistics packaging according to claim 3 is characterized in that: A first return buffer spring (5g) is respectively arranged between the first swing rod (5a) and the second swing rod (5b) located on the same side of the frame (4a), and a second return buffer spring (5h) is also respectively arranged between the cross beam (4a2) of the frame (4a) and the two first swing rods (5a).

6. The green and environmentally friendly inkjet coding equipment for tobacco logistics packaging according to claim 2, 3, 4 or 5, characterized in that: An anti-collision cylinder (6) is also installed on the inkjet frame (4b), and the output shaft of the anti-collision cylinder (6) is vertically arranged and connected to an anti-collision rubber block (7); the bottoms of the plurality of pressure plates (3c) are also respectively abutted and connected to rubber blocks (3e) of uniform thickness.

7. The green and environmentally friendly inkjet coding equipment for tobacco logistics packaging according to claim 1, 2, 3, 4 or 5, characterized in that: The conveying track (1) comprises a conveying motor (1a) and a plurality of conveying rollers (1b) which are driven by the conveying motor (1a) to rotate synchronously and are arranged at intervals. The conveying track (1) is equipped with an encoder (9) via a spring bracket (8). The rotating shaft of the encoder (9) is arranged horizontally and is connected to a wear-resistant wheel (10). The wear-resistant wheel (10) abuts against one of the conveying rollers (1b) and is driven to rotate by the conveying roller (1b).

8. The green and environmentally friendly inkjet coding equipment for tobacco logistics packaging according to claim 7 is characterized in that: The conveying track (1) is also provided with two material guide rods (11) arranged horizontally opposite to each other, and a trumpet-shaped material transfer channel (11a) is formed between the two material guide rods (11). The two sides of the conveying track (1) are also respectively provided with a material blocking rod (12) and a material ejection cylinder (13) both located behind the material transfer channel (11a). The output shaft of the material ejection cylinder (13) is connected with a material ejection plate (14) arranged opposite to the material blocking rod (12). A plurality of pressure plates (3c) are located between the material ejection plate (14) and the material blocking rod (12), and the material ejection plate (14) can be moved along a conveying direction perpendicular to the conveying track (1) under the drive of the material ejection cylinder (13).

9. The green and environmentally friendly inkjet coding equipment for tobacco logistics packaging according to claim 8, characterized in that: A first photoelectric sensor (15) and a second photoelectric sensor (16) are also mounted on the conveying track (1); a transmitter and a receiver of the first photoelectric sensor (15) are arranged opposite to each other and are located on the side of the ejection cylinder (13) and the adjacent side of the blocking rod (12), respectively; and a transmitter and a receiver of the second photoelectric sensor (16) are arranged opposite to each other on both sides of the coding mechanism.

10. The green and environmentally friendly inkjet coding equipment for tobacco logistics packaging according to claim 2, 3, 4 or 5, characterized in that: The mounting frame (2) is respectively mounted with a first cylinder (3f), a driving motor (18), a driven pulley (19) and a slide rail (17) perpendicular to the conveying direction of the conveying track (1); the output shaft of the first cylinder (3f) is vertically arranged downward and connected to the mounting seat (3a); the mounting seat (3a) is also connected to a first movable guide rod (3g) vertically inserted on the mounting frame (2); the slide rail (17) is slidably connected to a sliding seat (21) via a slider (20); the output shaft of the driving motor (18) is arranged vertically downward and connected to the mounting seat (3a); the mounting seat (3a) is also connected to a first movable guide rod (3g) vertically inserted on the mounting frame (2); the slide rail (17) is slidably connected to a sliding seat (21) via a slider (20); the output shaft of the driving motor (18) is arranged vertically downward and connected to the mounting seat (3a); the output shaft of the first cylinder (3f) is vertically arranged ... A driving pulley (22) is connected to the shaft, a synchronous belt (23) is sleeved between the driving pulley (22) and the driven pulley (19), the sliding seat (21) and the synchronous belt (23) are connected, a second cylinder (24) is installed on the sliding seat (21), an output shaft of the second cylinder (24) is vertically arranged downward and connected to a crossbeam (4a2) of the frame (4a), and a second movable guide rod (25) vertically inserted on the sliding seat (21) is connected to the crossbeam (4a2) of the frame (4a).

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