Non-stop intelligent packaging production line and packaging method thereof

Abstract

The invention belongs to the technical field of intelligent packaging production lines, and particularly relates to a non-stop intelligent packaging production line and a packaging method.The intelligent packaging production line comprises a feeding conveying belt and a feeding mechanical arm which are arranged in a spaced mode, and further comprises an upper temporary storage space and a lower temporary storage space; the two layers of temporary storage spaces are both used for ferrying material boxes, a material carrying basket and a double-bent hook connected with the material carrying basket are arranged between the two layers of temporary storage spaces, the material carrying basket idles in the two layers of temporary storage spaces after the material boxes are stacked at one end of the feeding conveying belt, and the idling time is used for compensating the feeding interval time; the material carrying basket is concave, an elastic piece for vertically limiting the material box is fixed to an opening of the concave shape, and the two sides of the material carrying basket are fixedly provided with bubble bags, plug gauges and elastic bands, wherein the plug gauges and the elastic bands are located on the two sides of the bubble bags respectively. According to the device, the capacity of the ferry material boxes is increased by idling between the feeding station and the film wrapping station, the material boxes at the stacking station can be dredged, the idling time is used for compensating the feeding interval time, and the productivity waste caused by feeding interval shutdown is prevented.

Description

Technical Field

[0001] The present invention belongs to the technical field of intelligent packaging production lines, and particularly relates to a non-stop intelligent packaging production line and its packaging method. Background Art

[0002] Through automated equipment and robotic technology, intelligent packaging production lines have achieved automated operations in the packaging process, greatly reducing manual operations. For example, in the case of small gift boxes, tea boxes, beverage powder boxes, facial mask boxes, etc., the downstream packaging lines of products have achieved automated packaging to replace traditional manual packaging. Especially for these small boxes flowing at a speed of hundreds or thousands per hour, traditional manual packaging methods are no longer sufficient to meet the requirements.

[0003] After these small boxes are received, they are neatly stacked and sent into the heat shrink film in the form of stacks. They flow downstream, and the heat shrink film is tightened around the stacked small boxes by heating, and then the opening is closed to complete the packaging. In the packaging stage, the technical solution of wrapping the incoming materials with heat shrink film is very mature. It is not only relatively light but also has good packaging continuity. Especially, the heat shrink film can be continuously fed without being cut into segments. However, there are still the following problems on the packaging production line:

[0004] 1. When a large batch of materials arrives, although the heat shrink film continuously wraps them, these small boxes are prone to congestion at the entrance of the stacking station, inducing the stop of feeding.

[0005] 2. Some manufacturers choose to increase the number of stacking stations and heat shrink film wrapping stations to divert the congested small boxes. This not only doubles the space occupied during installation but also causes double waste of production capacity due to idleness during the interval between incoming materials. Summary of the Invention

[0006] The purpose of the present invention is to provide a non-stop intelligent packaging production line and its packaging method, which can rotate idly between the feeding station and the film wrapping station to increase the capacity of the ferry boxes, and can also dredge the boxes at the stacking station. This idle rotation time is used to make up for the feeding interval time to prevent waste of production capacity caused by downtime during the feeding interval.

[0007] The technical solution adopted by the present invention is specifically as follows:

[0008] A non-stop intelligent packaging production line includes a feeding conveyor belt and a feeding manipulator arranged at intervals, and further includes:

[0009] Upper and lower two-layer temporary storage spaces. Both of the two-layer temporary storage spaces are used for ferrying boxes, and a loading basket and a double-bend hook connected to the loading basket are arranged between them. After the loading basket stacks the boxes at one end of the feeding conveyor belt, it rotates idly in both of the two-layer temporary storage spaces, and this idle rotation time is used to make up for the feeding interval time;

[0010] The material loading basket is concave, and an elastic member for vertically limiting the material box is fixed at the opening of the concave shape. Bubble bladder bags are fixed on both sides of the material loading basket, and a plug gauge and an elastic belt are respectively located on both sides of the bubble bladder bags. During the rotation process, through the binding force of the elastic belt, the bubble bladder bags and the plug gauge straighten the material box from both sides, and the elastic member vertically straightens the material box.

[0011] As a preferred solution, the lower temporary storage space includes a horizontally fixed frame and a vertically fixed frame integratedly, a support assembly is rotatably installed between the horizontally fixed frame and the vertically fixed frame, and two material loading belts sleeved with the support assembly;

[0012] The support assembly includes load-bearing rollers and limiting metal wheels arranged at intervals on the outer surface of the material loading belt, and a rotating shaft inserted into the material loading belt. The load-bearing rollers, the rotating shaft and the limiting metal wheels are all arranged between the horizontally fixed frame and the vertically fixed frame.

[0013] As a preferred solution, the upper temporary storage space includes a storage rack arranged above the feeding conveyor belt and a sky rail assembly for transferring the material loading basket;

[0014] The sky rail assembly includes a linear module located above the storage rack, a lifting mechanism moved by the linear module, and a lifting ring connected to the lifting mechanism. When the lifting ring is lowered by the lifting mechanism, it is used to sleeved the upper hook of the double-bent hook.

[0015] As a preferred solution, the elastic member includes an upper arm bone bracket fixedly connected to the double-bent hook. A hard brush and a bubble bladder bag fixedly connected to the lower surface of the upper arm bone bracket are fixed inside the material loading basket. The hard brush and the bubble bladder bag are used to vertically straighten the material box located inside the material loading basket;

[0016] As a preferred solution, a traction belt connected to the elastic belt is arranged between the two bubble bladder bags. The traction belt bypasses the upper surface of the hard brush, and bifurcated joints are integrally installed at both ends of the traction belt. The hard brush is pulled obliquely in a triangle by the bifurcated joints and the elastic belt to stick to the material box.

[0017] As a preferred solution, bubble bladder bags are fixed on both sides of the material loading basket, and a plug gauge and an elastic belt are respectively located on both sides of the bubble bladder bags. The elastic belt binds the bubble bladder bags and the plug gauge to stick to the inner wall of the material loading basket, and the bubble bladder bags and the plug gauge straighten the material box from both sides.

[0018] As a preferred solution, the lifting mechanism includes a loading flange base fixedly connected to the linear module stage and a vertical air cylinder fixed to the lower surface of the loading flange base. The cylinder rod of the vertical air cylinder is fixedly connected to the lifting ring.

[0019] As a preferred solution, damping blocks and distance sensors are fixedly arranged at intervals on one side of the hanging ring close to the loading conveyor belt, and the distance sensor is used to detect the distance between the hanging ring and the double-bend hook.

[0020] As a preferred solution, two symmetrical limiting conveyor belts are rotatably installed on both sides of the loading conveyor belt, and through grooves for the limiting conveyor belts to pass through are formed in the lower edge of the loading basket.

[0021] A packaging method for a non-stop intelligent packaging production line includes the following steps:

[0022] Step 1: The loading manipulator grabs the material boxes one by one and places them on the loading conveyor belt until they are sent into the loading basket.

[0023] Step 2: The material boxes are limited by friction to prevent them from slipping until they are sent into the loading basket and trigger the detection unit to complete the stacking action.

[0024] Step 3: The loading belt extends upward to form a space for stacking the loading baskets, and the loading baskets are stacked vertically during the transportation process to save the placement space.

[0025] Step 4: The overhead rail assembly is started to grab the double-bend hook at the top of the vertical rack, lift it and place it on the storage rack, temporarily store the material boxes carried by it on the storage rack, and then send them back to the support assembly of the loading belt through the overhead rail assembly after the incoming materials are consumed.

[0026] Step 5: The loading basket stops at one end of the heat shrink film wrapping machine, and the horizontal push cylinder is started to push the stacked material boxes onto the heat shrink film wrapping machine.

[0027] Step 6: On the heat shrink film wrapping machine, the stacked material boxes are fed into the heat shrink film in a jogging manner by the material box conveyor belt, and then the heat sealing knife is lowered. While pressing the heat shrink film, heating is carried out, and the heat shrink film is sealed and cut off by high temperature to complete the film wrapping.

[0028] The technical effects achieved by the present invention are as follows:

[0029] The present invention is provided with a plurality of loading baskets to stack the material boxes respectively, which can idle between the loading station and the film wrapping station, utilize the upper space to increase the capacity of ferrying the material boxes, and is used for online swallowing a large amount of incoming materials. During the interval of incoming materials, the loading conveyor belt will idle, and at this time, these material boxes are continuously spit out to the film wrapping station, and the idling capacity can be adjusted according to the surplus space of the packaging production line to prevent the waste of production capacity caused by downtime during the loading interval.

[0030] The present invention suspends the loading basket above the vertical frame through the overhead rail assembly at the highest point of the ferry material box and sends it into the storage rack, so as to increase the idling capacity and make the best use of the upper space. The loading baskets are vertically stacked during the transportation process to save the placement space, especially to avoid the packaging production line being too long. The length of the packaging production line can be adjusted according to the site, or the damaged or worn loading baskets can be removed and replaced with new ones.

[0031] The present invention surrounds the plug gauge with an arc-shaped bubble bag. When loading, the material box squeezes the arc-shaped bubble bag to deform, and two plug gauges provide rigid support from both sides. The outer surface of the bubble bag here is composed of a plurality of bubbles and can be easily deformed. To prevent skewing, an elastic band is used to bind the bubble bag and the plug gauge to the inner wall of the loading basket to prevent unnecessary shaking or deflection caused by inertia during the movement of the material box with the loading basket, thereby ensuring accurate material delivery.

[0032] In the present invention, when the material box is centered, the bubble bags need to face the middle, so a traction belt made of wear-resistant silicone material is used to pull the two bubble bags toward the middle, which is convenient for sticking to the material box, and the bristle brush is pulled in a triangular shape and tilted by the forked section and the elastic belt to stick to the material box, so as to prevent the bristle brush from being excessively bent upwards due to being squeezed by the material box. In addition, due to the high stability of the triangle, the pushing effect brought to the bristle brush by the material box when the material comes in can be shared, so as to maintain stability.

[0033] The packaging method adopted by the present invention includes steps one to six, which facilitates the work of ferrying material boxes. Based on the intelligent packaging production line, the packaging process of the mask material box is designed to optimize the packaging production process and reduce jams. In particular, the ferrying capacity is doubled by using the lower ferry space composed of n vertical racks and horizontal racks, and the upper ferry space in the material storage rack. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is a front view of the first embodiment of the present invention;

[0035] Figure 2 It is a front view of the loading conveyor belt in the first embodiment of the present invention;

[0036] Figure 3 is a front view of the side-by-side carrying belts in the first embodiment of the present invention;

[0037] Figure 4 is a side view of a loading basket in the first embodiment of the present invention;

[0038] Figure 5 is a front view of a detection unit in Embodiment 1 of the present invention;

[0039] Figure 6 is a front view of the horizontal thrust cylinder in the first embodiment of the present invention;

[0040] Figure 7 It is a side view of the overhead rail assembly in the first embodiment of the present invention;

[0041] Figure 8 It is a front view of the lifting mechanism in the first embodiment of the present invention;

[0042] Figure 9 It is a front view of the hanging ring in the first embodiment of the present invention;

[0043] Figure 10 It is a rear view of the shrink film wrapping machine table in the first embodiment of the present invention;

[0044] Figure 11 It is a flowchart of the packaging method in the second embodiment of the present invention.

[0045] In the drawings, the list of components represented by each reference numeral is as follows:

[0046] 1. Loading conveyor belt; 2. Loading manipulator; 3. Horizontal frame; 4. Vertical frame; 5. Loading belt; 6. Loading basket; 601. Bubble bag; 602. Plug gauge; 603. Elastic band; 604. Traction belt; 605. Fork joint; 7. Double-bend hook; 8. Stock rack; 9. Shrink film wrapping machine table; 901. Shrink channel; 10. Heat sealing knife; 11. Upper arm bone bracket; 12. Hard brush; 13. Bubble bag; 14. Plastic sheet; 15. Load-bearing roller; 16. Rotating shaft; 17. Limit metal wheel; 18. Linear module; 19. Hanging ring; 20. Loading flange base; 21. Vertical cylinder; 22. Damping block; 23. Distance sensor; 24. Limit conveyor belt; 25. Through groove; 26. Displacement sensor; 27. Elastic cord; 28. Load-bearing cross beam; 29. Transverse push cylinder; 30. Limit plate. Detailed implementation manners

[0047] In order to make the purpose and advantages of the present invention clearer, the present invention will be specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or several specific implementation manners of the present invention, and does not strictly limit the scope of protection specifically claimed by the present invention.

[0048] Embodiment 1:

[0049] As Figures 1 - 10 shown, a non-stop intelligent packaging production line includes a loading conveyor belt 1 and a loading manipulator 2 arranged at intervals, and also includes a horizontal frame 3, a stock rack 8 and a shrink film wrapping machine table 9. Among them, the loading conveyor belt 1, the loading manipulator 2 and the shrink film wrapping machine table 9 are all controlled by an external control panel. The incoming materials are grabbed by the loading manipulator 2 and placed on the loading conveyor belt 1 one by one. After being stacked in the horizontal frame 3, they are sent into the shrink film wrapping machine table 9. Some material boxes can be temporarily stored in the stock rack 8 to prevent blockage at the stacking station, so that the loading conveyor belt 1 can continue to feed without stopping.

[0050] Loading stage:

[0051] Refer to the appendix Figure 1 、 Figure 2 and Figure 3 ,The loading manipulator 2 automatically grabs the material box on the tray and places it on the loading conveyor belt 1, flowing uniformly towards the horizontal rack 3. In order to straighten the material box, two symmetrical limiting conveyor belts 24 are rotatably installed on both sides of the loading conveyor belt 1. The two limiting conveyor belts 24 push the material box from both sides towards the middle in a V-shape. In this embodiment, the two horizontal racks 3 are arranged side by side at one end of the loading conveyor belt 1, and vertical racks 4 are fixed on their upper surfaces. A support assembly and two loading belts 5 sleeved on the support assembly are rotatably installed between the horizontal rack 3 and the vertical rack 4. After the material box leaves the loading conveyor belt 1, it will enter the interval between the two loading belts 5.

[0052] Refer to the appendix Figure 1 、 Figure 3 and Figure 4 ,In order to ferry the material box, a loading basket 6 and a double-bent hook 7 connected to the loading basket 6 are arranged between the two loading belts 5. During loading, the loading belt 5 rotates the loading basket 6 until the lower wall of the loading basket 6 is flush with the upper belt of the loading conveyor belt 1 for receiving materials one by one. Among them, the double-bent hook 7 is formed by welding two "C"-shaped steel parts side by side and can be well hung on the support assembly.

[0053] Stacking stage:

[0054] For example, the material box for loading facial masks is relatively long but thin, and generally at least four are packaged together. These material boxes are placed horizontally on the loading conveyor belt 1 and are sent into the loading basket 6 one by one for horizontal stacking. After reaching the quantity of one package, the loading basket 6 will be removed, and then an empty loading basket 6 will be sent up by the loading belt 5.

[0055] Refer to the appendix Figure 2 、 Figure 3 and Figure 4 ,Since the center of gravity of the material box is shifted when it is sent into the loading basket 6 from one side, which may cause the loading basket 6 to tilt. Therefore, in this embodiment, a through groove 25 for the limiting conveyor belt 24 to pass through is opened at the lower edge of the loading basket 6. In this way, part of the limiting conveyor belt 24 supports and straightens the material box in the loading basket 6 in the through groove 25, facilitating the loading basket 6 to remain stable. After being filled with material boxes, the center of gravity returns to the middle of the loading basket 6, facilitating it to remain stable during subsequent transmission.

[0056] Refer to the appendix Figure 1 、 Figure 3 and Figure 5, the surfaces of these material boxes are smooth and easy to slip off. Therefore, the material loading basket 6 is designed to be concave, and an upper arm bone bracket 11 fixedly connected to the double-bend hook 7 is fixed at the opening of the concave shape. It is supported by the upper arm bone bracket 11. Also, a hard brush 12 connected to the lower surface of the upper arm bone bracket 11 and a bubble bladder bag 13 penetrating through the lower surface of the material loading basket 6 are adhesively bonded inside the material loading basket 6. The hard brush 12 rubs against the material box for positioning to prevent it from slipping off. In this way, when loading materials, the loading conveyor belt 1 sends the material box into the material loading basket 6, which will squeeze the bubble bladder bag 13. Also, a plastic sheet 14 and a detection unit are horizontally arranged between the two loading belts 5, so that the air flow blown out by the bubble bladder bag 13 agitates the plastic sheet 14 to trigger the detection unit, which is used to detect the signal that a single material loading basket 6 is full.

[0057] Refer to the appendix Figure 1 , Figure 3 and Figure 5 , the air flow blown out by the bubble bladder bag 13 generates a lateral thrust, which may push the detection unit and the plastic sheet 14 to shift. Therefore, resetting is required. The detection unit includes a displacement sensor 26 fixed between two vertical frames 4 and two elastic ropes 27 adhesively bonded to the plastic sheet 14, so that after the air flow stops, the elastic ropes 27 rebound to pull the plastic sheet 14 back to its original position. The displacement sensor 26 is used to detect the displacement signal of the plastic sheet 14 agitated by the air flow, and the two elastic ropes 27 respectively pull both sides of the plastic sheet 14.

[0058] Among them, the displacement sensor 26 always faces the plastic sheet 14 and is connected to an external control panel through a signal converter. Once the displacement signal is detected, the external control panel responds. In other embodiments, it can also be first signal-connected to a terminal machine and then the signal is sent to the external control panel to separate the stacking action from the film wrapping action of the heat shrink film wrapping machine 9.

[0059] Transportation stage:

[0060] Refer to the appendix Figure 1 , Figure 3 and Figure 4 , since the material boxes often come in batches and there are intervals between the incoming materials, and the processing capacities of the stacking action and the film wrapping action are limited, it is necessary to increase the capacity of the ferry material box between these two actions. The support component of this embodiment includes load-bearing rollers 15 and limit metal wheels 17 arranged at intervals on the outer surface of the loading belt 5 and a rotating shaft 16 inserted inside the loading belt 5. One hook under the double-bend hook 7 can be hung on the load-bearing roller 15, so that the material loading basket 6 moves with the loading belt 5. The load-bearing roller 15, the rotating shaft 16 and the limit metal wheel 17 are all arranged between the horizontal frame 3 and the vertical frame 4. In this way, multiple material loading baskets 6 can be accommodated simultaneously between the loading conveyor belt 1 and the heat shrink film wrapping machine 9, and the material boxes can be continuously transported to the heat shrink film wrapping machine 9 during the incoming material interval to avoid shutdown.

[0061] Furthermore, the number of vertical racks 4 is n, where n≥2. In this way, the loading belt 5 is supported in a concave shape and is laterally continuous, making the most of the upper space. During the process of conveying these loading baskets 6, they are stacked vertically, saving storage space. In particular, it avoids the packaging production line from being too long and can adjust the length of the packaging production line according to the site conditions. And in this embodiment, the shape of the load-bearing roller 15 is not limited to a round rod shape. It can also be a quadrangular prism, a hexagonal prism, etc. The advantage is that it can horizontally limit the double-bend hook 7 and facilitate keeping the loading basket 6 stable when stacking or unloading the material boxes.

[0062] Refer to the appendix Figure 1 、 Figure 3 and Figure 4 As shown in the appendix, since the hard brush 12 and the air bubble bag 13 are only aligned with the middle of the material box and the two components are relatively soft, the material boxes of this batch need to be righted from both sides. Therefore, air bubble bags 601 are bonded to both sides of the loading basket 6 in this embodiment, and the plug gauges 602 and elastic bands 603 are respectively located on both sides of the air bubble bags 601. The arc-shaped air bubble bags 601 surround the plug gauges 602. When loading the material box, the air bubble bags 601 are deformed by the extrusion of the material box, and the two plug gauges 602 provide rigid support from both sides respectively. The outer surface of the air bubble bags 601 here is composed of several air bubbles and can be easily deformed. To prevent skewing, the elastic bands 603 are used to bind the air bubble bags 601 and the plug gauges 602 to stick to the inner wall of the loading basket 6, so as to prevent unnecessary shaking or deviation of the material box caused by inertia during the movement with the loading basket 6 and ensure accurate feeding.

[0063] Furthermore, when the material box is centered, the air bubble bag 13 needs to face the middle. Therefore, a traction belt 604 connected to the elastic band 603 is arranged between the two air bubble bags 601 on both sides. In this way, the traction belt 604 made of wear-resistant silica gel material is used to pull the two air bubble bags 13 towards the middle, which is convenient for closely adhering to the material box. And the traction belt 604 is wound around the upper surface of the hard brush 12, and bifurcated joints 605 are integrally installed at both ends of the traction belt 604. The hard brush 12 is pulled obliquely in a triangular shape by the bifurcated joints 605 and the elastic band 603 to stick to the material box, preventing the hard brush 12 from being overly warped upwards due to the extrusion of the material box. Also, due to the high stability at the triangle, it can share the pushing effect brought by the incoming material box to the hard brush 12 to maintain stability.

[0064] Temporary storage stage:

[0065] Refer to the appendix Figure 1 、 Figure 7 and Figure 8The lifting mechanism 19 is used to lift and lower the load box 6 to the loading platform 4, and the lifting mechanism 19 is used to lift and lower the load box 6 to the loading platform 4.

[0066] Furthermore, the staff can operate on the external control panel to control the overhead rail assembly to remove the damaged or old loading basket 6 on the supporting assembly and place it on the storage rack 8, and send the intact loading basket 6 in the storage rack 8 to the supporting assembly to complete the replacement of the loading basket 6. There is no need for the staff to manually replace the loading basket 6, which facilitates improving the intelligence of the packaging production line. In particular, each loading basket 6 on the supporting assembly can be numbered, and their positions can be marked on the screen through animation according to the production rhythm.

[0067] Furthermore, the material storage rack 8 is divided into a waiting area and a hanging basket area, which are used to store the loading basket 6 containing material boxes and the idle loading basket 6 respectively. The linear module 18 can be controlled to drive the lifting ring 19 to cross the waiting area and the hanging basket area to grab the target loading basket 6.

[0068] Refer to the attached Figure 1 , Figure 7 and Figure 8 In order to transfer the loading basket 6 more smoothly, the lifting mechanism of this embodiment includes a loading flange base 20 fixedly connected to the linear module 18 platform and a vertical cylinder 21 fixed to the lower surface of the loading flange base 20. The two ends of the loading flange base 20 are slidably connected to the slide rails of the top beam to straighten the vertical cylinder 21, and the cylinder rod of the vertical cylinder 21 is fixedly connected to the two lifting rings 19 through a concave steel rod, so that the two lifting rings 19 can synchronously cover the two double-bend hooks 7. When the vertical cylinder 21 is extended or contracted, the two ends of the concave steel rod can slide along the vertical guide rails to further straighten from both sides, so that the lifting ring 19 can remain stable.

[0069] Refer to the attached Figure 7 , Figure 8 and Figure 9, the actual strokes of the linear module 18 and the vertical cylinder 21 can both be controlled through a program. However, it is not so easy to grasp the distance relative to the double-bend hook 7. Therefore, a damping block 22 and a distance sensor 23 are fixedly spaced on the side of the lifting ring 19 close to the feeding conveyor belt 1. The distance sensor 23 is used to detect the distance between the lifting ring 19 and the double-bend hook 7. Once the lifting ring 19 approaches the double-bend hook 7, buffering is carried out through the deformation of the damping block 22 made of rubber material to prevent hard collision. Then, the distance signal is monitored in real time through the distance sensor 23 until a certain range is reached, triggering the in-place signal, and then the loading basket 6 can be moved away to facilitate preparing to capture the double-bend hook 7.

[0070] Film covering stage:

[0071] Refer to appendix Figure 1 and Figure 10 , as the loading belt 5 rotates, the incoming material idles between the horizontal frame 3 and the vertical frame 4 and then is sent into the heat-shrinkable film wrapping machine table 9. This idle time is used to make up for the feeding interval time. The loading baskets 6 stop at one end of the heat-shrinkable film wrapping machine table 9 one by one. In order to automatically transfer the material boxes, in this embodiment, a load-bearing cross beam 28 is fixedly bolted between the two sides of the vertical frames 4 close to the heat-shrinkable film wrapping machine table 9, and a horizontal pushing cylinder 29 facing the heat-shrinkable film wrapping machine table 9 is fixedly bolted in the middle of the load-bearing cross beam 28. The horizontal pushing cylinder 29 is signal-connected to an external control panel. Starting the horizontal pushing cylinder 29 can extend the cylinder rod horizontally. After entering the loading basket 6, it pushes the stacked material boxes onto the heat-shrinkable film wrapping machine table 9. However, this will cause the center of gravity of the loading basket 6 to be unstable. Therefore, a limiting plate 30 is fixedly bolted to the cylinder rod of the horizontal pushing cylinder 29. During the pushing process, the stacked material boxes are horizontally straightened by the limiting plate 30 to prevent the loading basket 6 from tilting.

[0072] Refer to appendix Figure 1 and Figure 10 , the heat-shrinkable film wrapping machine table 9 is arranged at one end of the horizontal frame 3 far from the feeding conveyor belt 1, and a material box conveying belt and a tripod that can expand the heat-shrinkable film are installed on the upper surface. The stacked material boxes can be sent into the heat-shrinkable film by the material box conveying belt. At the same time, a heat-sealing knife 10 is also arranged on the heat-shrinkable film wrapping machine table 9. After the heat-sealing knife 10 is lowered through the hydraulic system, while pressing the heat-shrinkable film, it is heated. The heat-shrinkable film is sealed and cut off by high temperature, and then lifted away from the heat-shrinkable film to complete film wrapping. Then, it is sent into the heat-shrinkage channel 901 by the material box conveying belt, and the heat-shrinkable film is shrunk tightly against the stacked material boxes by heating.

[0073] Embodiment 2:

[0074] In order to facilitate the work of ferrying the material boxes, based on the intelligent packaging production line in the embodiment, the packaging process of the face mask material boxes is designed to optimize the packaging production process and reduce jams.

[0075] As Figure 11As shown in the figure, a packaging method for a non-stop intelligent packaging production line includes the following steps:

[0076] Step 1: The loading manipulator 2 grabs the material boxes one by one and places them on the loading conveyor belt 1. The limiting conveyor belt 24 passes through the through groove 25 to support and hold the material boxes until they are sent into the loading basket 6 to keep them stable. After the loading basket 6 is filled with material boxes, its center of gravity will return to the middle.

[0077] Step 2: Since the surface of the material box is smooth and it is easy to slip off, a hard brush 12 is used to rub the material box for limiting to prevent it from slipping off. In this way, when loading, the loading conveyor belt 1 sends the material box into the loading basket 6, which will squeeze the air bubble bag 13 to blow out air flow, agitating the plastic sheet 14 to trigger the detection unit to detect the signal that a single loading basket 6 is full, and complete the stacking action.

[0078] Step 3: While the loading belt 5 is suspended by n vertical frames 4 and a horizontal frame 3, the loading belt 5 extends upward to form a space for stacking the loading baskets 6. During the process of transporting these loading baskets 6, they are stacked vertically, saving the placement space, especially avoiding the excessive length of the packaging production line, and the length of the packaging production line can be adjusted according to the site conditions.

[0079] Step 4: In the case of a huge amount of incoming materials, it is necessary to further increase the capacity of the ferry material box. The overhead rail assembly is started to drive the hanging ring 19 to buckle the double-bend hook 7 at the top of the vertical frame 4, lift it and place it on the storage rack 8, temporarily store the material boxes carried by it on the storage rack 8, and then send it back to the support assembly of the loading belt 5 after the incoming materials are consumed.

[0080] The staff can operate on the external control panel to control the overhead rail assembly to remove the damaged or old loading baskets 6 on the support assembly, place them on the storage rack 8, and send the intact loading baskets 6 in the storage rack 8 to the support assembly to complete the replacement of the loading baskets 6. There is no need for the staff to manually replace the loading baskets 6, which is convenient for improving the intelligence of the packaging production line.

[0081] Among them, each loading basket 6 on the support assembly can be numbered, and according to the production rhythm, their positions can be marked in the form of an animation on the screen to facilitate the staff to understand the position of each loading basket 6.

[0082] Step 5: As the loading belt 5 rotates, the loading baskets 6 stop at one end of the heat shrink film wrapping machine 9 one by one. In order to automatically transfer the material boxes, the horizontal push cylinder 29 is started to extend its cylinder rod horizontally. After entering the loading basket 6, it pushes the stacked material boxes onto the heat shrink film wrapping machine 9, and the stacked material boxes are horizontally straightened by the limiting plate 30 to avoid the skew of the loading basket 6.

[0083] Step six: On the heat shrink film wrapping machine 9, the heat shrink film is propped up by a tripod, and the stacked material boxes are fed into the heat shrink film by the material box conveyor belt in an inching manner, and then the heat sealing knife 10 is lowered by the hydraulic system to press the heat shrink film while heating it. The heat shrink film is sealed and cut by the high temperature, and then lifted up and separated from the heat shrink film to complete the film wrapping. The film is then fed into the heat shrink channel 901 and heated to shrink the heat shrink film and fit tightly to the stacked material boxes.

[0084] The above is only a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the art unless otherwise specified and limited.

Claims

1. A non-stop intelligent packaging production line, comprising a feeding conveyor belt (1) and a feeding robot (2) arranged at intervals, characterized in that: Also includes: Upper and lower temporary storage spaces, both of which are used to ferry material boxes, and a loading basket (6) and a double-bend hook (7) connected to the loading basket (6) are arranged between the two. After the loading basket (6) stacks the material boxes at one end of the feeding conveyor belt (1), it idles in the two temporary storage spaces, and the idling time is used to make up for the feeding interval time; The loading basket (6) is concave and an elastic member for vertically limiting the material box is fixed at the opening of the concave shape. Bubble bags (601) and plug gauges (602) and elastic bands (603) respectively located on both sides of the bubble bags (601) are fixed on both sides of the loading basket (6). During the rotation process, the bubble bags (601) and the plug gauges (602) are used to straighten the material box from both sides through the binding force of the elastic bands (603), and the elastic member is used to vertically straighten the material box.

2. The non-stop intelligent packaging production line according to claim 1 is characterized by: The temporary storage space at the lower layer comprises a transverse frame (3) and a vertical frame (4) which are fixed in one piece, and a support assembly and two carrying belts (5) sleeved with the support assembly are rotatably mounted between the transverse frame (3) and the vertical frame (4); The support assembly comprises a load-bearing roller (15) and a limiting metal wheel (17) arranged at intervals on the outer surface of the carrying belt (5), and a rotating shaft (16) inserted into the interior of the carrying belt (5); the load-bearing roller (15), the rotating shaft (16) and the limiting metal wheel (17) are all arranged between the horizontal frame (3) and the vertical frame (4).

3. The non-stop intelligent packaging production line according to claim 1 is characterized by: The temporary storage space at the upper layer comprises a material storage rack (8) arranged above the loading conveyor belt (1) and a ceiling rail assembly for transferring the loading basket (6); The overhead rail assembly comprises a linear module (18) located above the material storage rack (8), a lifting mechanism moved by the linear module (18), and a lifting ring (19) connected to the lifting mechanism, wherein the lifting ring (19) is used to cover a hook on the double-bend hook (7) when it is lowered by the lifting mechanism.

4. The non-stop intelligent packaging production line according to claim 2 is characterized by: The elastic member comprises an upper arm support (11) fixedly connected to the double-bend hook (7); a bristle brush (12) and an air bubble bag (13) fixedly connected to the lower surface of the upper arm support (11) are fixed inside the loading basket (6); the bristle brush (12) and the air bubble bag (13) are used to vertically straighten the material box located inside the loading basket (6).

5. The non-stop intelligent packaging production line according to claim 4 is characterized by: A traction belt (604) connected to an elastic belt (603) is provided between the two bubble bags (601); the traction belt (604) passes around the upper surface of the bristle brush (12) and forked sections (605) are integrally installed at both ends of the traction belt (604); the bristle brush (12) is pulled in a triangular shape and tilted by the forked section (605) and the elastic belt (603) to stick to the material box.

6. The non-stop intelligent packaging production line according to claim 3 is characterized by: The lifting mechanism comprises a loading flange base (20) fixedly connected to the carrier of the linear module (18) and a vertical cylinder (21) fixed on the lower surface of the loading flange base (20), wherein the cylinder rod of the vertical cylinder (21) is fixedly connected to the lifting ring (19).

7. The non-stop intelligent packaging production line according to claim 3 is characterized by: A damping block (22) and a distance sensor (23) are fixed at intervals on one side of the lifting ring (19) close to the feeding conveyor belt (1), and the distance sensor (23) is used to detect the distance from the lifting ring (19) to the double-bend hook (7).

8. The non-stop intelligent packaging production line according to claim 1 is characterized by: Two symmetrical limiting conveyor belts (24) are rotatably mounted on both sides of the loading conveyor belt (1), and a through slot (25) for the limiting conveyor belt (24) to pass through is provided on the lower edge of the loading basket (6).

9. The non-stop intelligent packaging production line according to claim 2 is characterized in that: Also includes: A heat shrink film wrapping machine (9), the heat shrink film wrapping machine (9) being arranged at one end of the transverse frame (3) away from the feeding conveyor belt (1) and having a heat sealing knife (10) installed on the upper surface, the heat shrink film wrapping machine (9) being used to wrap the material box after idling between the transverse frame (3) and the vertical frame (4); A load-bearing crossbeam (28) is fixed between the two vertical frames (4) on one side close to the heat shrink film wrapping machine (9), a horizontal thrust cylinder (29) facing the heat shrink film wrapping machine (9) is fixed in the middle of the load-bearing crossbeam (28), and a cylinder rod of the horizontal thrust cylinder (29) is fixed with a limit plate (30).

10. A packaging method for a non-stop intelligent packaging production line, applied to the non-stop intelligent packaging production line according to claim 1, characterized in that: The following steps are involved: Step 1: the loading robot (2) grabs the material boxes one by one and places them on the loading conveyor belt (1) until they are sent into the loading basket (6); Step 2: Limiting the material box by friction to prevent it from slipping, until the material box is sent into the loading basket (6) to trigger the detection unit, and the stacking action is completed; Step 3: the material carrying belt (5) extends upward to form a space for stacking the material carrying baskets (6), and the material carrying baskets (6) are stacked vertically during the conveying process; Step 4: Start the overhead rail assembly to grab the double-bend hook (7) at the top of the vertical frame (4), lift it and place it on the material storage rack (8), temporarily store the material box it carries on the material storage rack (8), and after the incoming material is consumed, it is sent back to the support assembly of the carrying belt (5) through the overhead rail assembly; Step 5: the material loading basket (6) is parked at one end of the heat shrink film wrapping machine (9), and the horizontal push cylinder (2) is started to push the stacked material boxes onto the heat shrink film wrapping machine (9); Step 6: On the heat shrink film wrapping machine (9), the stacked boxes are fed with heat shrink film by the box conveyor belt in an inching manner, and then the lower heat sealing knife (10) is lowered to press the heat shrink film while heating it. The heat shrink film is sealed and cut by the high temperature to complete the film wrapping.

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