A method for repackaging boxes in a multi-channel packaging machine

Abstract

This invention discloses a box replenishment method for a multi-channel packaging machine. Firstly, five sets of feeding channels are marked: along the conveying direction of the replenishment conveyor chain, from the front end to the rear end, the five feeding channels are marked as E, D, C, B, and A. Then, the replenishment priority levels for the five feeding channels are set: First priority: when two consecutive replenishment operations are performed, a gap of one or more feeding channels is required; Second priority: the replenishment order priority of the feeding channels is E > D > C > B > A; and the first priority is prioritized during replenishment. Finally, the replenishment mechanism pushes the packaging boxes on the replenishment conveyor chain into the feeding channel to be replenished. This multi-channel packaging machine replenishment method ensures timely replenishment of boxes in each feeding channel, avoiding feeding system malfunctions caused by material accumulation in the channel preventing box packing.

Description

Technical Field

[0001] This invention belongs to the field of packaging machinery, and more specifically relates to a method for replenishing boxes in a multi-channel packaging machine. Background Technology

[0002] To improve packaging efficiency, existing technologies have proposed multi-channel counting packaging machines. These machines utilize multiple parallel feeding channels and counting hoppers to convey and count materials. Finally, all counted materials enter a single main hopper for discharge and packaging. While these multi-channel counting packaging machines effectively improve packaging efficiency, the convergence of materials from multiple conveying channels into a single main hopper and hopper leads to waiting times and pauses in material delivery during the packaging process. This prevents continuous counting without stopping the machine, thus impacting packaging efficiency. To address this issue, the applicant has developed a multi-channel independent packaging machine. Each channel connects to a separate packaging box, enabling simultaneous parallel packaging of multiple boxes. This effectively solves the problem of long waiting times during material delivery and significantly improves packaging efficiency. However, when this packaging machine and packaging method replenishes boxes in the conventional sequential manner, it has been found that some or certain channels may not be replenished in a timely manner or may not receive replenishment for a long time. This causes the material in the channel to accumulate and cannot be packed, resulting in a malfunction of the feeding system and affecting the normal packing operation. Summary of the Invention

[0003] The purpose of this invention is to provide a box replenishment method for a multi-channel packaging machine, which solves the problems mentioned in the background art, so that each material feeding channel can be replenished in a timely manner, avoiding the problem of material feeding system failure caused by the continuous accumulation of materials in the channel that cannot be boxed.

[0004] This invention provides a box replenishment method for a multi-channel packaging machine. The multi-channel packaging machine includes a feeding device and a box replenishment device. The feeding device includes five independent material discharge channels. The box replenishment device includes a box replenishment conveyor chain and five box replenishment mechanisms corresponding to the five material discharge channels. The five box replenishment mechanisms replenish the packaging boxes conveyed on the box replenishment conveyor chain to the five material discharge channels respectively. The box replenishment method is as follows:

[0005] The first step is to mark the five sets of material drop channels: along the conveying direction of the replacement box conveyor chain, mark the five sets of material drop channels as E, D, C, B, and A from the front end to the back end of the replacement box conveyor chain;

[0006] The second step is to set the priority levels for the replenishment of boxes in the 5 sets of material drop channels: First priority: When two consecutive replenishment operations are performed, the replenishment must be performed with an interval of one or more material drop channels; Second priority: The replenishment order priority of the material drop channels is E > D > C > B > A; and the first priority is given priority when replenishing boxes.

[0007] The third step is box replacement: the packaging box is conveyed along the box replacement conveyor chain to the corresponding position of the drop channel of the box to be replaced, and then the box replacement mechanism pushes the packaging box on the box replacement conveyor chain into the drop channel of the box to be replaced.

[0008] Preferably, the feeding device further includes 5 independent feeding channels, which are transverse channels, including a primary feeding assembly, a secondary feeding assembly, and a tertiary feeding assembly arranged in series in a downwardly inclined manner; the primary feeding assembly, the secondary feeding assembly, and the tertiary feeding assembly are all independently set up, and each includes an inclined feeding trough and a vibrator connected to the bottom of the inclined feeding trough; the end of the inclined feeding trough of the tertiary feeding assembly is connected to the front section of the discharge channel.

[0009] Preferably, the material discharge channel is a vertical channel, and an upper buffer bin assembly, a lower buffer bin assembly, and a discharge bin assembly are arranged sequentially in a vertical position within the material discharge channel; the upper buffer bin assembly includes an upper buffer bin and an upper buffer bin door, the lower buffer bin assembly includes a lower buffer bin and a lower buffer bin door, and the discharge bin assembly includes a discharge hopper disposed below the lower buffer bin; a counting component is provided at the upper front of the upper buffer bin, and the counting component is connected to the control system signal and performs real-time counting of the material entering the upper buffer bin;

[0010] During packaging counting, the upper buffer chamber door opens while the lower buffer chamber door closes, allowing materials to enter the lower buffer chamber directly. Once the quantity of materials in the lower buffer chamber reaches the required number of repackaged items, the upper buffer chamber door closes, and the counting component simultaneously obtains the quantity of materials entering the upper buffer chamber. At the same time, the lower buffer chamber door opens, and all materials in the lower buffer chamber pass through the discharge hopper and enter the packaging box blocked by the second baffle cylinder. After all materials in the lower buffer chamber have fallen out, the lower buffer chamber door closes, and the upper buffer chamber door opens, allowing all materials in the upper buffer chamber to enter the lower buffer chamber at once.

[0011] Preferably, each material feeding channel is equipped with a guide box conveyor chain at its lower part; along the conveying direction of the guide box conveyor chain, a first box-blocking cylinder and a second box-blocking cylinder are arranged above the guide box conveyor chain; the first box-blocking cylinder is arranged close to the replenishment box conveyor chain, the distance between the first box-blocking cylinder and the second box-blocking cylinder is greater than the length of a packaging box, and the distance between the first box-blocking cylinder and the replenishment box conveyor chain is greater than the length of a packaging box; the second box-blocking cylinder is arranged behind the material feeding channel, and the material falling along the material feeding channel enters the packaging box blocked by the second box-blocking cylinder.

[0012] Preferably, the guide box conveyor chain and the box replenishment mechanism are respectively disposed on both sides of the box replenishment conveyor chain; the box replenishment mechanism includes an L-shaped push plate and a horizontal push box cylinder connected to the push plate and perpendicular to the conveying direction of the box replenishment conveyor chain; the push plate includes a first vertical plate perpendicular to the conveying direction of the box replenishment conveyor chain and a second vertical plate parallel to the conveying direction of the box replenishment conveyor chain; the second vertical plate is fixed to the end of the first vertical plate away from the box replenishment conveyor chain.

[0013] The beneficial effects of the box replenishment method for a multi-channel packaging machine according to the technical solution of the present invention are: by changing the conventional box replenishment sequence and setting a reasonable box replenishment priority, it ensures that each material feeding channel can replenish boxes in a timely manner, and avoids the problem of material feeding system failure caused by the continuous accumulation of materials in the channel that cannot be boxed. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the multi-channel packaging machine in the technical solution of the present invention.

[0015] Figure 2 This is a schematic diagram of the multi-channel packaging machine in this scheme, where the feeding device is not shown.

[0016] Figure 3 This is a schematic diagram of the material feeding channel in the technical solution of the present invention.

[0017] Figure 4 This is a schematic diagram of the material feeding channel in the technical solution of the present invention.

[0018] Figure 5 This is a schematic diagram of the box-repairing mechanism in the technical solution of the present invention.

[0019] Figure 6 This is a schematic diagram of the guide box conveyor chain in the technical solution of the present invention.

[0020] Figure 7 This is a schematic diagram of the guide box conveyor chain in the technical solution of the present invention from another perspective.

[0021] The components include: 1. Main box supply device; 11. Box supply and blocking cylinder; 2. Box replenishment device; 20. Box replenishment mechanism; 21. Box replenishment conveyor chain; 22. Push plate; 221. First vertical plate; 222. Second vertical plate; 23. Guide slider; 231. Guide rail; 24. Adapter plate; 25. First-stage box pushing cylinder; 26. Second-stage box pushing cylinder; 27. First guide sleeve; 28. First guide rod; 31. Box guide conveyor chain; 311. First wide conveyor chain; 312. First partition plate; 32. First blocking cylinder; 321. First blocking cylinder mounting bracket; 33. Second blocking cylinder; 331. Second blocking cylinder mounting bracket; 34. First-stage photoelectric opening. 35. Secondary photoelectric switch; 4. Feeding device; 41. Feeding channel; 411. Primary feeding assembly; 412. Secondary feeding assembly; 413. Tertiary feeding assembly; 414. Horizontal material conveyor belt; 42. Dropping channel; 421. Upper buffer bin; 422. Upper buffer bin door; 423. Lower buffer bin; 424. Lower buffer bin door; 4241. Door tilting plate; 425. Discharge hopper; 426. Lower buffer bin door drive cylinder; 427. Lower buffer bin door drive linkage assembly; 428. Upper buffer bin door drive cylinder; 43. Loose material guide plate; 44. Loose material protrusion; 5. Box ejection device; 100. Packaging box. Detailed Implementation

[0022] To facilitate understanding of the technical solution of the present invention by those skilled in the art, the technical solution of the present invention will now be further described in conjunction with specific embodiments and the accompanying drawings.

[0023] This invention provides a box replenishment method for a multi-channel packaging machine. The multi-channel packaging machine includes a control system and, controlled by the control system, a main box feeding device 1, a box replenishment device 2, a material feeding device 4, and a box dispensing device 5, achieving automatic box replenishment, automatic material feeding, automatic counting, automatic packaging, and automatic box dispensing control. In this solution, the material feeding device 4 includes five independent material drop channels 42. The box replenishment device 2 includes a box replenishment conveyor chain 21 and five box replenishment mechanisms 20, each corresponding to one of the five material drop channels 42. The five box replenishment mechanisms 20 replenish the boxes conveyed on the box replenishment conveyor chain 21 to the five material drop channels 42.

[0024] Each material drop channel 42 has a guide box conveyor chain 31 at its lower part. Along the conveying direction of the guide box conveyor chain 31, a first blocking cylinder 32 and a second blocking cylinder 33 are positioned above it. The first blocking cylinder 32 is located close to the replenishing box conveyor chain 21, and the distance between the first blocking cylinder 32 and the second blocking cylinder 33 is greater than the length of a packaging box. The distance between the first blocking cylinder 32 and the replenishing box conveyor chain 21 is also greater than the length of a packaging box. The second blocking cylinder 33 is located at the lower rear of the material drop channel 42. Material falling along the material drop channel 42 enters the packaging box blocked by the second blocking cylinder 33. During packaging, the second blocking cylinder 33 pushes downwards, blocking a packaging box that is currently being packaged. The first blocking cylinder 32 pushes downwards, blocking a packaging box that is awaiting packaging. To ensure packaging efficiency and avoid or reduce feeding waiting time, each guide box conveyor chain 31 should have one box being packaged and one box to be packaged. After the box being packaged is completed, it will be promptly conveyed out. Then, the box to be packaged will be moved to the position blocked by the second stop cylinder 33. At this time, a box needs to be promptly moved to the position blocked by the first stop cylinder 32. If the box is not replenished in time, there will be no empty box to replace the box being packaged, which will cause material to accumulate in the material drop channel 42 of the feeding device 4, preventing timely packaging and causing a malfunction in the feeding and dropping system, thus affecting the normal packaging process. Based on this, a box replenishment method is proposed below.

[0025] The method for replacing the box is as follows:

[0026] The first step is to mark the five sets of material drop channels 42: along the conveying direction of the replenishment box conveyor chain 21, from the front end to the rear end of the replenishment box conveyor chain 21, mark the five sets of material drop channels 42 as E, D, C, B, and A;

[0027] The second step is to set the priority levels for the replenishment of boxes in the 5 sets of material drop channels 42: First priority: When two consecutive replenishment operations are performed, the replenishment must be performed with an interval of one or more material drop channels; Second priority: The replenishment order priority of material drop channels 42 is E>D>C>B>A; and the first priority is given priority when replenishing boxes.

[0028] The third step is box replacement: the packaging box is conveyed along the box replacement conveyor chain 21 to the corresponding position of the box to be replaced drop channel 42, and then the box replacement mechanism 20 pushes the packaging box on the box replacement conveyor chain 21 into the box to be replaced drop channel 42.

[0029] According to the above box replenishment method, firstly, when the machine is started, all five feeding channels are empty. The main box supply device 1 transports the packaging boxes to the box replenishment conveyor chain 21, which then transports them sequentially to the corresponding positions of feeding channels E, C, A, D, and B. The box replenishment mechanism 20 replenishes boxes in feeding channels E, C, A, D, and B in sequence. Since there are no packaging boxes on the five box guide conveyor chains 31 at the start of the machine, during the first box replenishment, all the first box blocking cylinders 32 retract upwards. The box guide conveyor chain 31 directly transports the first replenished packaging box to the blocking position of the second box blocking cylinder 33. Then, the feeding device 4 is started to complete the packaging, which allows for a quick transition to the packaging state. Then, the front of all the first-block cylinders 32 extends downwards, and the five channels are replenished in the order of E, C, A, D, B. At this time, there is a packaging box to be packaged at the blocking position of each of the five groups of first-block cylinders 32. After the packaging box blocked by the second-block cylinder 33 is finished and output, the packaging box to be packaged blocked by the first-block cylinder 32 can be replenished in time to ensure packaging efficiency and avoid the problem of material accumulation on the feeding device 4.

[0030] After the first box replenishment is completed, the packaging machine enters the packaging operation state. At this time, because the feeding speeds of the various feeding channels 41 of the feeding device 4 are inconsistent, and the material in the same drop channel cannot be guaranteed to be conveyed in a completely uniform state, and the conveying speed is not necessarily the same at different times, the five drop channels 42 do not necessarily complete the boxing in the order of the first replenishment, that is, they do not necessarily complete the boxing in the order of E, C, A, D, B, nor do they necessarily always complete the boxing in a certain order. That is, starting from the third replenishment, the boxing is not necessarily replenished in the order of E, C, A, D, B. From the third replenishment onwards, it is necessary to replenish the box at the position corresponding to the drop channel that has completed the boxing in a timely manner, but it is not necessarily the channel that completed the boxing first that is replenished first. All replenishment is carried out according to the replenishment logic and replenishment method described above. The box replenishment logic is as follows: Set the replenishment priority levels for 5 groups of material drop channels 42: First priority: When two consecutive replenishment operations are performed, the replenishment must be performed with an interval of 1 or more material drop channels; Second priority: The replenishment order priority of the material drop channels is E > D > C > B > A; and the first priority is given priority when replenishing boxes.

[0031] Assuming that boxing is completed first in material drop channel E, while the other four channels are not yet filled, the box replenishment mechanism 20 immediately replenishes boxes in material drop channel E. During the replenishment process in material drop channel E, material drop channels A and D complete boxing almost simultaneously. At this time, the first stop cylinder 32 in material drop channels A and D is empty and needs to be replenished immediately. According to the first priority: when two consecutive box replenishment operations are performed, there must be an interval of one or more material drop channels before replenishment; the second priority: the replenishment priority of material drop channel 42 is E>D>C>B>A; and the first priority replenishment logic is given priority during replenishment; therefore, in this case, the box replenishment is performed first in material drop channel A (there is no interval between material drop channel D and the previous replenishment material drop channel E).

[0032] Suppose that during the box replenishment process in the feeding channel A, the feeding channels C and B have also completed the boxing process. At this time, the channels that need to replenish boxes are D, C, and B. According to the box replenishment logic, the feeding channel D is replenished first (because the feeding channel B is not separated from the feeding channel A, so it does not meet the first priority; although the feeding channels D and C are separated from the feeding channel A, they still need to meet the second priority in addition to meeting the first priority, so the feeding channel D is replenished first).

[0033] Suppose that when a box is being replenished in the feeding channel D, the feeding channel E has already finished packing the box. At this time, the feeding channels that need to be replenished are feeding channels E, C, and B. According to the box replenishment logic, the box is replenished in feeding channel B.

[0034] Suppose that when a box is being replenished in the feeding channel B, the feeding channel A has already finished packing the box. At this time, the feeding channels that need to be replenished are feeding channels E, C, and A. According to the box replenishment logic, the box is replenished in feeding channel E at this time.

[0035] Suppose that when a box is being replenished in the feeding channel E, the feeding channel D has already finished packing the box. At this time, the feeding channels that need to be replenished are feeding channels D, C, and A. According to the box replenishment logic, the box is replenished in feeding channel C at this time.

[0036] As can be seen in the upper right corner, after 6 box replenishment operations, all 5 groups of material feeding channels completed at least one box replenishment, and channels D, C, and B, which initially had missing boxes, also completed the box replenishment. This effectively avoids the problem of material feeding system failure caused by the continuous accumulation of materials in the feeding or feeding channels, thus ensuring the efficiency of packaging work.

[0037] If the box replenishment logic described above is not followed, but rather the conventional box replenishment logic in existing technology, i.e., replenishing boxes in the order of E, D, C, B, A, then starting from the third replenishment, the replenishment process becomes as follows: First, feeding channel E completes its boxing process, and immediately replenishment is performed on feeding channel E. While replenishment is being performed on feeding channel E, feeding channels A and D complete their boxing processes, and immediately replenishment is performed on feeding channel D. While replenishment is being performed on feeding channel D, feeding channels C and B complete their boxing processes, and at this point, feeding channels C, B, and A require replenishment, so immediately replenishment is performed on feeding channel C. While replenishment is being performed on feeding channel C, feeding channel E completes its boxing process, and at this point, feeding channels E, B, and A require replenishment, so immediately replenishment is performed on feeding channel E. While replenishment is being performed on feeding channel E, feeding channel D completes its boxing process, and at this point, feeding channels D, B, and A require replenishment, so immediately replenishment is performed on feeding channel D. When a box is being replenished in feeding channel D, feeding channel C has already finished packing. Feeding channels C, B, and A all require replenishment, so feeding channel C is immediately replenished. Starting from the third replenishment, after six consecutive replenishments, feeding channels A and B, which initially finished packing, never receive a replenishment. This means that after boxes awaiting packaging are also packed in the feeding channels, boxes cannot be replenished in time, causing material to accumulate in the corresponding feeding channels for an extended period, preventing packaging and leading to feeding failures. It also indirectly reduces the number of packaging channels, impacting packaging efficiency.

[0038] If the "first-come, first-served" box replenishment logic is followed, meaning that starting from the third replenishment, the replenishment is performed first for the material channels E, D, C, B, and A that finish packing first, then two problems arise: firstly, the replenishment signals for material channels that finish packing simultaneously may become disordered; secondly, the need to avoid interference between boxes being conveyed on the replenishment conveyor chain 21 can lead to longer delivery intervals and lower replenishment efficiency. For example, if material channels B and E finish packing sequentially, replenishment should be performed first for material channel B. Since boxes being conveyed to material channel E need to pass through material channel B, when replenishing material channels B and E sequentially, it is necessary to ensure that replenishment for material channel B is completed before replenishment for material channel E can begin, to avoid interference or collision between boxes being replenished for material channel E and their corresponding positions on material channel B. Therefore, in summary, the "first-come, first-served" replacement logic should be excluded first. The replacement logic must at least meet the following replacement logic: "The replacement priority of the material drop channel is E > D > C > B > A".

[0039] In this scheme, the feeding device 4 also includes 5 independent feeding channels 41. The feeding channels 41 are transverse channels, including a primary feeding assembly 411, a secondary feeding assembly 412, and a tertiary feeding assembly 413 arranged in series in a downwardly inclined manner. The primary feeding assembly 411, secondary feeding assembly 412, and tertiary feeding assembly 413 are all independently set and each includes an inclined feeding trough and a vibrator connected to the bottom of the inclined feeding trough. The vibrator drives the inclined feeding trough to vibrate, realizing the conveying and dispersion of materials. The amplitude and vibration frequency of the vibrator on each feeding assembly can be independently adjusted and set, allowing the vibration speeds of the three inclined feeding troughs connected in series within a feeding channel to be set differently, which is beneficial for material dispersion. Similarly, the conveying speed between each feeding channel can be adjusted as needed. Different conveyor speeds can be used depending on the amount of material. This leads to the aforementioned situation where "the 5 sets of material drop channels 42 do not necessarily complete the boxing in the order of the first replenishment, that is, not necessarily in the order of E, C, A, D, B, nor necessarily always in a certain order. That is, starting from the third replenishment, the replenishment is not necessarily in the order of E, C, A, D, B. From the third replenishment onwards, it is necessary to replenish the boxes at the corresponding positions of the material drop channels that have completed packing in a timely manner." Therefore, it is necessary to propose the replenishment logic in this solution, and to replenish boxes according to the replenishment logic in this solution.

[0040] To further ensure the dispersion of materials, especially the dispersion and conveying of some viscous materials, material guide plates 43 are respectively installed at the end of the inner side of each inclined vibrating trough. If material enters the material guide plate 43, the material will be conveyed along the material guide plate for a certain distance before falling down. In this way, the material falls down later than the material that arrives at the end of the inclined guide trough at the same time, that is, it is separated from the material that arrives at the end of the inclined guide trough at the same time, thus realizing the dispersion of materials. Meanwhile, the bulk material guide plate 43 can also shape the conveyed material. Especially in the inclined guide chute within the three-stage feeding assembly 413, the material quantity is small, and the material is basically conveyed along the inner bottom surface of the inclined guide chute. In this way, the bulk material guide plate 43 at the end of the inclined guide chute within the three-stage feeding assembly 413 will have a blocking and shaping effect on the material along the inner bottom surface of the inclined guide chute. For example, if a material falls on the inner bottom surface of the inclined guide chute and is close to the inner side, when the material reaches the end of the inner bottom surface of the inclined guide chute, a small part of the material will be subject to the frictional resistance of the bulk material guide plate 43, preventing the material from moving onto the bulk material guide plate 43. This allows the material to fall completely along the inner bottom surface, thus shaping the falling posture of the material. This ensures that the material falls as close as possible to the center line of the inner bottom surface of the inclined guide chute, and finally falls as close as possible to the center line of the falling channel 42, which facilitates accurate counting and direct falling into the packaging box, avoiding deviation.

[0041] To further disperse the material, material protrusions 44 are evenly distributed on the inner surface of each inclined guide chute. When the material encounters the material protrusions 44, it will bounce with a certain amplitude, causing the materials that are stuck together or close together to separate and disperse.

[0042] In this scheme, the end of the inclined feeding trough of the three-stage feeding assembly 413 is connected to the front section of the dropping channel 42, and a horizontal material conveyor belt 414 is connected to the end of the three-stage feeding assembly 413 to achieve further shaping and speed control of the material, so that it enters the dropping channel 42 at the required speed and trajectory.

[0043] In this design, the material discharge channel 42 is a vertical channel, and within it, an upper buffer bin assembly, a lower buffer bin assembly, and a discharge bin assembly are arranged sequentially in a vertical position. The upper buffer bin assembly includes an upper buffer bin 421 and an upper buffer bin door 422. The lower buffer bin assembly includes a lower buffer bin 423 and a lower buffer bin door 424. The discharge bin assembly includes a discharge hopper 425 located below the lower buffer bin 423. A counting component, which is a camera, is located at the upper front of the upper buffer bin 421. This counting component is connected to the control system signal and performs real-time counting of the material entering the upper buffer bin 421.

[0044] During packaging counting, the upper buffer chamber door 422 opens while the lower buffer chamber door 424 closes, allowing materials to directly enter the lower buffer chamber 423. Once the quantity of materials in the lower buffer chamber 423 reaches the required number for sub-packaging, the upper buffer chamber door 422 closes, and the counting component simultaneously obtains the quantity of materials entering the upper buffer chamber 421. Simultaneously, the lower buffer chamber door 424 opens, and all materials in the lower buffer chamber 423 pass through the discharge hopper 425 and enter the packaging box blocked by the second baffle cylinder 33. After all materials have exited the lower buffer chamber 423, the lower buffer chamber door 424 closes, and the upper buffer chamber door 422 opens, allowing all materials in the upper buffer chamber 421 to enter the lower buffer chamber 423 at once.

[0045] The design of this structure allows the counted material to be temporarily stored in the upper or lower buffer bin 423, providing sufficient time for the output of finished packaging boxes and the replenishment of empty packaging boxes. At the same time, the material is not stopped during the box changing and replenishment process, and the counting is not paused, ensuring packaging efficiency.

[0046] In the above scheme, the lower buffer compartment 423 is located directly below the upper buffer compartment 421, and the upper buffer compartment door 422 is a horizontal support plate with an upper buffer compartment door drive cylinder 428 connected to the rear. The push rod of the upper buffer compartment door drive cylinder 428 extends and retracts, driving the upper buffer compartment door 422 to move back and forth, thereby realizing the closing and opening of the upper buffer compartment 421.

[0047] To ensure the rapid and one-time drop of materials within the lower buffer bin 423, the lower buffer bin door 424 consists of two opposing door tilting plates 4241. The tops of the two tilting plates 4241 are connected to lower buffer bin door drive linkage assemblies 427. The two lower buffer bin door drive linkage assemblies 427, located away from the tilting plates 4241, are connected to lower buffer bin door drive cylinders 426. The extension and retraction of the lower buffer bin door drive cylinders 426, through the lower buffer bin door drive linkage assemblies 427, causes the two tilting plates 4241 to move towards or away from each other, thus closing or opening the lower buffer bin door 424. The door opening and closing is achieved via cylinders, resulting in simple and rapid operation, instantaneous opening and closing of the door, ensuring accurate counting, precise door opening and closing positioning, and a low failure rate.

[0048] In this design, the guide box conveyor chain 31 and the replenishment box mechanism 20 are located on opposite sides of the replenishment box conveyor chain 21. The replenishment box mechanism 20 includes an L-shaped push plate 22 and a horizontal pusher cylinder connected to the push plate 22 and perpendicular to the conveying direction of the replenishment box conveyor chain 21. The push plate 22 includes a first vertical plate 221 perpendicular to the conveying direction of the replenishment box conveyor chain 21 and a second vertical plate 222 parallel to the conveying direction of the replenishment box conveyor chain 21. The second vertical plate 222 is fixed to the end of the first vertical plate 221 away from the replenishment box conveyor chain 21. When pushing the box, the first vertical plate 221 is located on the side of the pushed packaging box away from the main box supply device 1, thereby limiting the conveyed packaging box and ensuring that the packaging box stops at the corresponding position of the drop channel that needs to be replenished. Then, the second vertical plate 222 pushes the packaging box onto the guide box conveyor chain 31 corresponding to the drop channel that needs to be replenished. The L-shaped structure of the push plate 22 achieves the limiting and positioning of the packaging box, as well as the smooth ejection of the packaging box.

[0049] In this design, a guide slider 23 and a transfer plate 24 are connected to the push plate 22. A guide rail 231 is connected to the guide slider 23. The horizontal box-pushing cylinder includes a primary box-pushing cylinder 25 and a secondary box-pushing cylinder 26. The front end of the push rod of the primary box-pushing cylinder 25 is directly fixed to the push plate 22, and the cylinder body of the primary box-pushing cylinder 25 is fixed to the transfer plate 24. The front end of the push rod of the secondary box-pushing cylinder 26 is fixed to the transfer plate 24. During operation, the primary box-pushing cylinder 25 first pushes out, pushing the push plate 22 onto the box-repairing conveyor chain 21, so that the first vertical plate 221 is positioned above the packaging box in the conveying direction, allowing the packaging box to reach the position to be replenished. Then, the secondary box-pushing cylinder 26 operates, driving the push plate 22 and the primary box-pushing cylinder 25 to move as a whole, causing the push plate 22 to push the packaging box onto the box-guided conveyor chain 31. Using two separate cylinders to achieve box-pushing and box-repairing is simple to control and has a compact structure. A first guide sleeve 27 is connected to the adapter plate 24, and a first guide rod 28 passes through the first guide sleeve 27. The first guide rod 28 is fixed to the push plate 22 and parallel to the first-stage push box cylinder 25, thereby reducing the force on the first-stage push box cylinder 25 in the radial direction and extending the service life of the first-stage push box cylinder 25.

[0050] In this scheme, a box-feeding blocking cylinder 11 is set at the end of the main box-feeding device 1. When box feeding is not required, the box-feeding blocking cylinder 11 is pushed out to limit the packaging box being conveyed on the main box-feeding device 1, preventing the packaging box from continuing to be conveyed forward, so that the packaging box waits on the main box-feeding device 1. After receiving the box feeding signal, the box-feeding blocking cylinder 11 is released, and the packaging box is conveyed forward and enters the corresponding position of the material drop channel that needs to be replenished on the replenishment box conveying chain 21.

[0051] In this design, several first partitions 312 are added to the conveying surface of the first wide conveyor chain 311, and the conveyor chain between two adjacent first partitions 312 forms the guide box conveyor chain 31. One end of the guide box conveyor chain 31 is connected to the side of the replenishment box conveyor chain 21 and is opposite to the push plate 22, while the other end extends to the box ejection device 5, thereby conveying the packaged boxes to the box ejection device. A first box-blocking cylinder mounting bracket 321 and a second box-blocking cylinder mounting bracket 331 are provided above the first wide conveyor chain 311, which are used to install the first box-blocking cylinder 31 and the second box-blocking cylinder 33, respectively. After installation, the first box-blocking cylinder 31 is vertical and suspended above the center line of the guide box conveyor chain 31. After the push rod of the second box-blocking cylinder 31 is pushed down, it blocks the packaged box. After the first box-blocking cylinder 31 retracts, the packaged box blocked by the first box-blocking cylinder 31 is conveyed forward with the guide box conveyor chain 31 to the position of the second box-blocking cylinder 33 and blocked by the second box-blocking cylinder 33.

[0052] In the above scheme, the first box-stopping cylinder 31 and the second box-stopping cylinder 33 realize the box feeding method of one replenishment and one loading. On the one hand, it ensures that the next box can be loaded immediately after the previous box is loaded. At the same time, combined with the feeding device 4, it effectively shortens the packaging waiting time and maximizes the packaging efficiency. Meanwhile, it only provides one box replenishment position, simplifies the box replenishment operation, avoids interference and other problems during box replenishment, simplifies the equipment, and reduces equipment costs.

[0053] In this scheme, a primary photoelectric switch 34 and a secondary photoelectric switch 35 are respectively installed in front of the first blocking cylinder 31 and the second blocking cylinder 33. The primary photoelectric switch 34 and the secondary photoelectric switch 35 respectively sense whether the first blocking cylinder 31 and the second blocking cylinder 33 are blocked by a packaging box. If there is no packaging box, the signal is sent to the control system, and the control immediately replenishes the box.

[0054] The technical solution of the present invention has been described above by way of example in conjunction with the embodiments and accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A method of replenishing cartons in a multi-lane packaging machine, characterized by, The multi-channel packaging machine comprises a feeding feeding device and a box replenishing device, the feeding feeding device comprises five groups of independent feeding channels, and the box replenishing device comprises a box replenishing conveying chain and five groups of box replenishing mechanisms corresponding to the five groups of feeding channels respectively. Firstly, the five groups of feeding channels are marked respectively: along the conveying direction of the box replenishing conveying chain, the five groups of feeding channels are marked as E, D, C, B and A from the front end to the rear end of the box replenishing conveying chain. Secondly, the box replenishing priority of the five groups of feeding channels is set: the first priority is that the box replenishing operation needs to be performed on one or more than one feeding channel in an interval when the box replenishing operation is performed continuously for two times; the second priority is that the box replenishing arrangement priority of the feeding channels is E>D>C>B>A, and the first priority is satisfied preferentially when the box is replenished. Thirdly, the box is replenished: the packaging box is conveyed to the position corresponding to the feeding channel to be replenished along the box replenishing conveying chain, and then the box replenishing mechanism pushes the packaging box on the box replenishing conveying chain out to the feeding channel to be replenished.

2. The method of magazine replenishment for a multi-lane packaging machine according to claim 1, characterized in that, The feeding feeding device further comprises five groups of independent feeding channels, the feeding channels are transverse channels, and the feeding channels comprise a first feeding assembly, a second feeding assembly and a third feeding assembly which are arranged in series in a downward inclined manner; the first feeding assembly, the second feeding assembly and the third feeding assembly are independently arranged and each comprises an inclined feeding groove and a vibration machine connected to the bottom of the inclined feeding groove; and the end of the inclined feeding groove of the third feeding assembly is connected to the front end of the feeding channel.

3. The case replenishment method for a multichannel packaging machine according to claim 1, characterized in that, The feeding channel is a vertical channel, and the feeding channel comprises an upper buffer bin assembly, a lower buffer bin assembly and a discharge bin assembly which are arranged in sequence in an up-down position; the upper buffer bin assembly comprises an upper buffer bin and an upper buffer bin door, the lower buffer bin assembly comprises a lower buffer bin and a lower buffer bin door, and the discharge bin assembly comprises a discharge hopper arranged below the lower buffer bin; the front part of the upper end of the upper buffer bin is provided with a counting assembly, and the counting assembly is connected to the control system signal and counts the material entering the upper buffer bin in real time; When the packaging is counted, the upper buffer bin door is opened and the lower buffer bin door is closed, the material directly enters the lower buffer bin, the upper buffer bin door is closed when the number of the material in the lower buffer bin reaches the packaging number, the counting assembly synchronously obtains the number of the material entering the upper buffer bin, and the lower buffer bin door is opened, the material in the lower buffer bin passes through the discharge hopper and enters the packaging box blocked by the second blocking cylinder; after the material in the lower buffer bin is discharged, the lower buffer bin door is closed and the upper buffer bin door is opened, and the material in the upper buffer bin enters the lower buffer bin at one time.

4. The case replenishment method for a multichannel packaging machine according to claim 1, characterized in that, The lower part of each feeding channel is provided with a box guiding conveying chain, and the first blocking cylinder and the second blocking cylinder are arranged above the box guiding conveying chain along the conveying direction of the box guiding conveying chain. The first blocking box air cylinder is arranged close to the box supplementing conveying chain, the distance between the first blocking box air cylinder and the second blocking box air cylinder is greater than the length of one packaging box, and the distance between the first blocking box air cylinder and the box supplementing conveying chain is greater than the length of one packaging box; the second blocking box air cylinder is arranged behind the blanking channel, and the material falling along the blanking channel enters the packaging box blocked by the second blocking box air cylinder.

5. The method of replenishing cartons of a multi-lane packaging machine according to claim 4, characterized in that, The box guiding conveying chain and the box supplementing mechanism are arranged on the two sides of the box supplementing conveying chain; the box supplementing mechanism comprises an L-shaped push plate and a horizontal box pushing air cylinder connected to the push plate and perpendicular to the conveying direction of the box supplementing conveying chain; the push plate comprises a first vertical plate perpendicular to the conveying direction of the box supplementing conveying chain and a second vertical plate parallel to the conveying direction of the box supplementing conveying chain; and the second vertical plate is fixedly connected to the end of the first vertical plate away from the box supplementing conveying chain.

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