A pallet-free intelligent sorting and packaging unit and method for aerated concrete products

Abstract

The present invention discloses a pallet-free intelligent sorting and packaging unit and method for aerated concrete products, including a blank-joining conveyor line, a blank-dividing fixture, a grouping conveyor line, a visual recognition system, a sorting fixture, a lifting roller table, a brick-dividing platform, a stacking fixture and a packaging conveyor line. The blank-joining conveyor line receives a single row of multi-layer aerated concrete products from a steaming and curing vehicle, and decomposes them into single-layer blanks through a blank-dividing fixture; the grouping conveyor area groups the single-layer blanks into single-section blanks for photographing and recognition by a visual recognition system, and the detected defective products are clamped out by a sorting fixture; the lifting roller table and the brick-dividing platform combine the single-section blanks into single-layer blanks of the required size for the stacking fixture to clamp and place on a transfer pallet on the packaging conveyor line to form a finished brick stack, and the pallet after packaging is left on the packaging conveyor line and can be reused many times. The present invention can intelligently sort aerated concrete products, realize fully automatic pallet-free packaging, improve work efficiency, and reduce labor and transportation costs.

Description

Technical Field

[0001] The invention belongs to the technical field of aerated concrete product packaging machinery, and in particular relates to a trayless intelligent sorting and packaging machine unit and method for aerated concrete products. Background Art

[0002] At present, the transportation of aerated concrete products mainly takes the following forms:

[0003] 1. After the products are placed on the transport vehicle through the fixture, they are manually stacked and loaded for transportation. During the stacking process, the damaged blanks are detected. Although this transportation method can pick out the damaged products, it will cause secondary damage during the manual handling and stacking process, increasing the breakage rate. At the same time, manual stacking is also a heavy physical labor, so this transportation method is gradually being eliminated.

[0004] Second, adopt the automatic packaging and transportation method. The current packaging and transportation method is mainly: the products are placed on the steel pallets on the production line by means of transfer, and then the products are disassembled into bricks with a length of 1.2 meters, a width of 0.6 meters, and a height of 1.2 meters, or bricks of 1.2 meters square, and then bundled and packaged by a sword-piercing or horizontal baler, and finally unloaded and stacked by a forklift or loaded by a forklift. Among them, the manufacturing cost of a pallet is about 200 yuan, which is equivalent to the price of a whole stack of aerated concrete products. Therefore, the cost of the pallet is a huge investment for the aerated concrete product manufacturer, and it also determines that the pallet needs to be recycled. However, due to the poor conditions of the construction site for the use of aerated concrete products, the pallets are generally stacked directly on the mud ground, so the recycling of the pallets is difficult. At the same time, because the pallets need to be transported back and forth by forklifts, the damage rate of the pallets is high, which also causes the high maintenance costs of the aerated concrete product manufacturers.

[0005] In addition, the above-mentioned packaging and transportation method is that the products are directly packaged and transported after leaving the kettle without being split and sorted. There must be damaged blanks in the packaged products, and the transaction of aerated concrete products is based on the number of complete products after unloading to the use site as the final transaction quantity. Therefore, although the damaged products are transported to the use site, they do not generate any value. Therefore, it is necessary to pick out the damaged products in the brick pile when transporting them out of the factory. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a pallet-free intelligent sorting and packaging unit and method for aerated concrete products, which can intelligently sort and pallet-free package aerated concrete products, reduce production and transportation costs, and improve work efficiency.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is: a pallet-free intelligent sorting and packaging unit for aerated concrete products, comprising:

[0008] The billet separation fixture is arranged above the billet connection conveyor line for receiving the aerated concrete products. The billet separation fixture and the billet connection fixture on the billet connection conveyor line cooperate to separate the aerated concrete products into single-layer billets for transportation;

[0009] The marshaling conveyor line is used to decompose the single-layer billets transmitted by the receiving billet conveyor line and eliminate the gaps between the billets to form single-section billets of required length; a visual recognition system for detecting the integrity of the billets is provided on one section of the marshaling conveyor line; a lifting roller table for combining the single-section billets to form a single-layer billet of required size is provided at the end of the marshaling conveyor line;

[0010] A sorting fixture, which receives control commands from the visual recognition system and clamps out the detected damaged blanks;

[0011] The brick-dividing platform is used to separate a single-layer blank into a plurality of groups of single-layer sub-blanks, and a forklift hole gap for forklift unloading is formed between adjacent single-layer sub-blanks;

[0012] The packaging conveyor line has a transfer pallet fixed on its upper part which moves synchronously with the transmission chain. The transfer pallet is provided with multiple gaps to form space for sword-through packaging. A stacking clamp for clamping the single-layer blanks on the lifting roller table and the brick-dividing platform is provided on one side of the input end of the packaging conveyor line.

[0013] Furthermore, the blank connection conveyor line, blank separation fixture and grouping conveyor line are set as one or more groups, which share a set of visual recognition system, sorting fixture, lifting roller platform, brick separation platform and stacking fixture.

[0014] Furthermore, the blank-joining conveyor line includes a frame, a conveyor chain and a lifting platform arranged in the middle of the frame. When the lifting platform is raised, it carries the entire mold blank. When it falls, the entire mold blank can be placed on the conveyor chain for transportation to the blank-joining fixture.

[0015] Furthermore, the blank separation fixture includes a fixed frame, a clamping device and a lifting device arranged on the ground, one end of the lifting device is connected to the fixed frame, and the other end is connected to the clamping device; the clamping device is provided with a clamping hand corresponding to the blank connection fixture, and the lifting device drives the clamping device to move up and down to separate the clamped blank from the lower layer of blanks.

[0016] Furthermore, the marshalling conveying line is composed of several sections of marshalling conveying parts connected to each other at the end. Each section of the marshalling conveying part is provided with a marshalling frame, a conveying chain and two transmission shafts. The transmission shafts are fixed at both ends of the marshalling frame. A driving wheel and a driven wheel are installed on each transmission shaft. The driving wheel drives the conveying chain of this section to move with the rotation of the transmission shaft, and the driven wheel rotates with the transmission shaft of the next section.

[0017] Furthermore, the visual recognition system includes a frame, multiple cameras and a computing module. The frame spans across the marshalling conveyor line. The cameras are arranged at different positions of the frame to take pictures of different surfaces of each section of the blank respectively. The computing module analyzes and processes the image information collected by the camera.

[0018] Furthermore, the brick dividing platform includes a brick dividing frame fixed on the ground, a fixed plate fixed on the top of the brick dividing frame, and movable plates arranged on both sides of the fixed plate; the two movable plates can be separated or closed on the same horizontal plane relative to the fixed plate under the action of the driving mechanism.

[0019] The packaging conveyor line is provided with a packaging machine and a laminating machine, and can complete the full-automatic packaging and laminating after the packed bricks are in place.

[0020] A pallet-free intelligent sorting and packaging method for aerated concrete products comprises the following steps:

[0021] The first step: transport the single-row multi-layer aerated concrete products on the steaming and curing vehicle to the billet conveyor line. Under the cooperation of the billet connecting fixture and the billet separating fixture, the aerated concrete products are decomposed into single-layer billets for transportation;

[0022] Step 2: The marshaling conveyor line receives the single-layer billets from the first step. During the process of conveying the billets, the whole layer of billets is decomposed into single-section billets of required length by starting and stopping different sections of the marshaling conveyor line.

[0023] Step 3: The visual recognition system collects image information of the single-section blanks in the second step section by section and performs comparative analysis, outputs control commands to the sorting fixture, and the sorting fixture takes out the detected damaged blanks;

[0024] Step 4: The grouping conveyor line regroups the sorted blanks to form single-section blanks of the required length, which are then combined into single-layer blanks of the required size via the lifting roller table;

[0025] Step 5: The stacking fixture places the single-layer blank for forklift holes formed in the fourth step on the brick separation platform, and separates the forklift hole layer blank for forklift unloading;

[0026] Step 6: The stacking fixture stacks the single-layer green bodies of regular size formed by the combination in the fourth step onto the transfer pallet to form a brick stack of a certain height, and then places the forklift hole layer green bodies in the fifth step, and then continues to place single-layer green bodies of regular size until the finished brick stack of the required height is formed;

[0027] Step 7: The packaging conveyor line transports the finished bricks in step 6 to the packaging station, and passes through the gaps on the transfer pallet for pallet-free packaging.

[0028] The beneficial effects brought by the present invention are:

[0029] (1) The present invention adopts an intelligent sorting method. Before the brick stacks are transported out of the factory, the integrity of the aerated concrete products is automatically identified by a visual recognition system, and the damaged products in the blanks are picked out by a sorting fixture, thereby ensuring that all the aerated concrete products sent to the use site are intact. The operation is convenient, labor is saved, production automation is realized, the overall yield and work efficiency are improved, and the transportation cost is reduced. In addition, the problem of manual missed inspection and secondary damage to the blanks caused by manual operation can be effectively avoided, and the error rate and breakage rate are greatly reduced.

[0030] (2) The transfer pallet of the present invention can move synchronously with the transmission chain of the packaging conveyor line. The transfer pallet is provided with a space for through-sword packaging, which ensures that when the forklift takes away the packaged brick stack, the brick stack is directly separated from the transfer pallet at the same time, and there is no need to recycle the pallet. This saves a lot of pallet manufacturing and maintenance costs for aerated concrete product manufacturers and reduces the waste of resources.

[0031] (3) The lifting roller table in the present invention facilitates the direct combination of single-section blanks into single-layer blanks, and the brick-dividing platform can automatically and quickly complete the production of forklift hole layer blanks. The lifting roller table, brick-dividing platform and stacking fixture work together to improve stacking efficiency. The design of the forklift hole layer allows forklifts to be used for both brick stack unloading and loading, solving the problems of high labor intensity and labor costs during manual loading.

[0032] (4) This system uses a set of visual recognition systems, sorting fixtures, lifting rollers, brick-splitting platforms and stacking fixtures to intelligently sort aerated concrete products on two marshaling conveyor lines at the same time. It is capable of large-scale operations and has a compact structure, which reduces the installation space. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the structure of the whole mold blank of the packaging of the present invention;

[0034] Figure 2 It is a plan view schematic diagram of the present invention;

[0035] Figure 3is a side view of the present invention;

[0036] Figure 4 It is a front view of the present invention;

[0037] Figure 5 It is an AA side view of the present invention.

[0038] Figure numerals: 1. Billet conveyor line; 2. Billet separation fixture; 3. Grouping conveyor line; 4. Visual recognition system; 5. Sorting fixture; 6. Lifting roller table; 7. Stacking fixture; 8. Brick separation platform; 9. Packing conveyor line; 10. Packing machine; 11. Laminating machine; 12. Lifting platform; 13. Frame; 14. Driven end; 15. Active end; 16. Billet connection fixture; 17. Return track of steaming and curing car; 18. Finished product fixture; 21. Fixed frame; 22. Clamping device; 2 3. Lifting device; 31. Marshalling rack; 32. Drive shaft; 41. Frame; 42. Camera; 51. Clamp; 52. Sorting robot; 61. Lifting drive mechanism; 62. Pushing mechanism; 63. Roller; 71. Palletizing gripper; 72. Palletizing robot; 81. Fixed plate; 82. Moving plate; 83. Brick separating rack; 91. Packing line rack; 92. Packing conveyor line driven end; 93. Packing conveyor line active end; 94. Transfer pallet; 511. Clip. DETAILED DESCRIPTION

[0039] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0040] See also Figures 1 to 5 A pallet-free intelligent sorting and packaging unit for aerated concrete products includes: a blank receiving conveyor line 1, a blank separating fixture 2, a grouping conveyor line 3, a visual recognition system 4, a sorting fixture 5, a lifting roller table 6, a stacking fixture 7, a brick separating platform 8, a packaging conveyor line 9, a packaging machine 10 and a laminating machine 11.

[0041] See also Figure 1 The aerated concrete bricks placed on the curing car consist of a row of products, each row of products consists of multiple layers of products, and each layer of products consists of multiple blocks of products. The return track 17 of the curing car passes under the finished product fixture 18, and the blank connection conveyor line 1 is arranged parallel to the return track 17 of the curing car under the finished product fixture 18. In order to match the production efficiency, in this embodiment, the blank connection conveyor line 1 is arranged in two. The finished product fixture 18 places the whole mold finished bricks on the blank connection conveyor line 1 respectively. The end of the blank connection conveyor line 1 is crossed by a blank separation fixture 2 covering all the blank connection conveyor lines 1. The blank separation fixture 2 cooperates with the blank connection conveyor line 1 to disassemble the blanks of the whole mold into layers of blanks.

[0042] The end of the blank connection conveyor line 1 is connected to the marshaling conveyor line 3, and the blanks are transferred layer by layer to the marshaling conveyor line 3 when the blank connection conveyor line 1 and the marshaling conveyor line 3 move forward synchronously. The marshaling conveyor line 3 is divided into multiple sections of marshaling conveying parts connected end to end, and the first section of the marshaling conveying part is connected to the end of the blank connection conveyor line 1. The marshaling conveyor line 3 decomposes the single-layer blanks into several sections with a length of 1.2 meters or multiples of 1.2 meters through the start and stop control between different sections, and then passes through the visual recognition system 4 across the marshaling conveyor line 3 section by section.

[0043] After a single section of the blank passes through the visual recognition system 4, the camera of the visual recognition system 4 takes pictures of multiple surfaces of the blank to collect image information, and compares and analyzes the images of intact blanks stored in advance, and then transmits the detection results to the electronic control system in the form of digital quantities. The sorting fixture 5 arranged in parallel with the visual recognition system 4 spans across the grouping conveyor line 3, and after receiving the detection results of the electronic control system, it takes out the detected damaged blanks. The grouping conveyor line 3 then groups the sorted blanks into a complete section of blanks.

[0044] The complete reassembled blanks are transported to the lifting roller table 6 perpendicular to the end of the marshaling conveyor line 3. The lifting roller table 6 is arranged crosswise with the marshaling conveyor line 3 to combine the two 1.2-meter-long blanks into a 1.2-meter-square blank.

[0045] The stacking fixture 7 and the brick-dividing platform 8 are arranged in the space between the lifting roller table 6 and the packing conveyor line 9. The stacking fixture 7 picks up the 1.2-meter-square blank from the lifting roller table 6 and places it on the transfer pallet 94 on the grouping conveyor line 3. The packing conveyor line 9 is adjacent to and vertically arranged with the grouping conveyor line 3. The stacked bricks are transported to the packing machine 10 or the laminating machine 11 across the packing conveyor line 9 via the packing conveyor line 9 for packing or laminating. The packed bricks are transported by forklifts for stacking or direct loading, completing the intelligent sorting and pallet-free packaging process of aerated concrete products.

[0046] The finished product clamp is a clamp commonly used in the prior art for transporting finished aerated concrete products, and will not be described in detail here.

[0047] The blank connection conveyor line 1 includes a lifting platform 12, a frame 13, a driven end 14, a driving end 15 and a blank connection fixture 16. The lifting platform 12 is arranged in the middle of the frame 13, and lifts the whole mold blank for receiving the finished fixture during normal operation; the driven end 14 and the driving end 15 are respectively arranged at the two ends of the frame 13, and a conveying chain such as a chain, a synchronous belt or a belt is used to form a closed loop for conveying the blank. The blank connection fixture 16 is arranged on the frame 13 near the driving end 15 side and corresponds to the blank separation fixture 2. When the finished fixture places the blank on the lifting platform 12, the lifting platform 12 descends and places the whole mold blank on the conveying chain. Driven by the driving end 15, the blank is transported to the blank connection fixture 16.

[0048] The blank separation fixture 2 includes a clamping device 22, a lifting device 23 and a fixed frame 21. The fixed frame 21 is fixed on the ground, and one end of the lifting device 23 is connected to the clamping device 22, and the other end is connected to the fixed frame 21, so that the clamping device 22 can move up and down; the clamping device 22 is provided with a gripper corresponding to the blank connection fixture 16. When working, the blank connection fixture 16 clamps the bottom layer of the aerated concrete product, and the clamping device 22 clamps the second to last layer of the blank, and then driven by the lifting device 23, the clamping device 22 clamps the second to last layer of the blank and rises, so that the bottom layer is left on the blank connection conveyor line 1, completing the layering operation of the whole mold blank.

[0049] The marshaling conveyor line 3 is composed of several sections of marshaling conveying parts. Each section is composed of a marshaling frame 31 and a transmission shaft 32; the marshaling frame 31 is fixed to the ground, the transmission shaft 32 is fixed to the marshaling frame 31, and each transmission shaft 32 is installed with a driving wheel and a driven wheel. The driving wheel of each section of the marshaling conveying part is fixed on the transmission shaft 32 of this section, and the rotation of the transmission shaft 32 drives the conveying chain of this section to move; the driven wheel is an idler wheel, which is installed on the transmission shaft 32 crosswise with the driving wheel, does not rotate with the transmission shaft 32 of this section, but rotates with the transmission shaft 32 of the next section. The driven wheel of the first section of the marshaling conveyor line 3 is installed at the active end 15 of the blank connection conveyor line 1, which can complete the transfer of the single-layer blank from the blank connection conveyor line 1 to the marshaling conveyor line 3. The start and stop control of two adjacent sections of the marshalling and conveying parts can be used to decompose the single-layer blank into the required length; the start and stop control of two adjacent sections of the marshalling and conveying parts can also be used to eliminate the gaps after sorting the damaged blanks; at the same time, the start and stop control of two adjacent sections of the marshalling and conveying parts can also be used to group blanks of different lengths.

[0050] Furthermore, in order to improve production efficiency, two or more marshaling conveyor lines 3 can be set up, and setting two marshaling conveyor lines 3 in conjunction with a set of lifting roller platforms 6 is the optimal configuration.

[0051] The visual recognition system 4 includes a frame 41, a camera 42 and a computing module. The frame 41 is fixed on the ground and spans across the marshaling conveyor line 3; three cameras are arranged on each marshaling conveyor line 3, which respectively take pictures of the top and two sides of each section of the blank. In specific implementation, when each section of the blank is transported by the marshaling conveyor line 3 through the visual recognition system 4, the camera 42 takes three photos of the three cross-sections of each section of the blank, and the computing module performs comparative calculation and analysis on each photo, and gives a set of digital detection results in the order of passing. The blank grade can be indicated by 1 for intact, 2 for second-class products with missing corners, 3 for broken, and 4 for missing bricks. After this result is transmitted to the electronic control system, the electronic control system controls the sorting fixture 5 to perform sorting operations according to the detection result.

[0052] The sorting fixture 5 includes a fixture 51 and a sorting robot 52. The sorting robot 52 is fixed on the ground and can drive the fixture 51 to move freely. The fixture 51 is fixed at the end of the sorting robot 52 and can reach the position where the damaged products need to be clamped under the drive of the sorting robot 52. A plurality of clamps 511 that can act independently are arranged on the fixture 51. When the fixture 51 reaches the position where the damaged bricks need to be clamped, the clamps 511 at the corresponding positions of the damaged bricks will act to clamp the damaged bricks at that position, thereby completing the sorting of the damaged bricks.

[0053] The lifting roller table 6 includes a push mechanism 62, a lifting drive mechanism 61 and a roller table 63. The push mechanism 62 is independently fixed on the ground at both sides and connected to a section at the end of the marshaling conveyor line 3; the roller table 63 is cross-arranged in the chain gap at the end of the marshaling conveyor line 3, and can be lifted and lowered under the drive of the lifting drive mechanism 61; under normal conditions, the roller table 63 is lower than the conveyor chain of the marshaling conveyor line 3; the lifting drive mechanism 61 is connected to the roller table 63 at the top, and the marshaling conveyor line 3 and the ground at the bottom. When the blank is transported to the top of the roller table 63 by the marshaling conveyor line 3, the roller table 63 is raised under the drive of the lifting drive mechanism 61, and the blank is lifted off the conveyor chain, and then the push mechanisms 62 on both sides push the blanks on the two marshaling conveyor lines 3 together to the middle position of the two marshaling conveyor lines 3 to form a 1.2-meter square single-layer blank. At the same time, a single-layer blank with a length of less than 1.2 meters for forklift hole retention can be formed according to the blanks of different lengths transported by the marshaling conveyor line 3.

[0054] The palletizing fixture 7 includes a palletizing gripper 71 and a palletizing robot 72. The palletizing robot 72 is fixed on the ground and can drive the palletizing gripper 71 to move freely; the palletizing gripper 71 is fixed at the end of the palletizing robot 72 and can reach the brick clamping position and the brick placing position under the drive of the palletizing robot 72. After the lifting roller table 6 forms a single-layer blank that meets the requirements, the palletizing robot 72 drives the gripper 71 to the lifting roller table 6 position to clamp the bricks, and then the palletizing robot 72 drives the palletizing gripper 71 to move to the transfer tray 94 position on the upper part of the packaging conveyor line 9, and then the palletizing gripper 71 moves to place the blank on the transfer tray 94. When stacking forklift holes is required, the lifting roller table 6 cooperates with the grouping conveyor line 3 to group out single-layer blanks of required length, and then the stacking robot 72 drives the stacking gripper 71 to clamp the blanks to the brick dividing platform 8. After the brick dividing platform 8 opens the forklift holes, the stacking robot 71 drives the stacking gripper 71 to clamp the bricks with forklift holes to the brick pile on the transfer pallet 94, and finally completes the stacking of the whole stack of bricks.

[0055] The brick-dividing platform 8 includes a fixed plate 81, a movable plate 82 and a brick-dividing frame 83. The brick-dividing frame 81 is fixed on the ground, and the fixed plate 81 and the brick-dividing frame 83 are installed as a whole and cannot be moved; there are two movable plates 82, which are also installed on the brick-dividing frame 83, arranged on both sides of the fixed plate 81, and can be moved in a direction away from the fixed plate 81. When the stacking gripper 71 places the blanks that need to be left with forklift holes on the brick-dividing platform 8, the blanks fall on the fixed plate 81 and the movable plates 82 on both sides respectively, and the movable plates 82 slide out to both sides to drive the blanks on the movable plates 82 to move, thereby leaving a forklift hole for forklift unloading between the blanks of the fixed plate 81 and the movable plate 82, completing the operation of leaving the forklift hole.

[0056] The packing conveyor line 9 includes a packing line frame 91, a packing conveyor line driven end 92, a packing conveyor line active end 93, a transfer tray 94 and a transmission chain. The packing line frame 91 is fixed on the ground, and the packing conveyor line driven end 92 and the packing conveyor line active end 93 are respectively fixed at both ends of the packing line frame 91, and the two are connected by a transmission chain. Driven by the active end 93, the bricks on the transfer tray 94 can be transferred to the packing position or the film coating position to complete the packing or film coating of the bricks.

[0057] The baler 10 and the laminating machine 11 are arranged on the baling conveyor line 9, and the bricks can be baled or laminating automatically after being stamped into place. According to the specific use occasion, the baler 10 and the laminating machine 11 can be replaced by manual baling and laminating without affecting the operation of the whole line.

[0058] A pallet-free intelligent sorting and packaging method for aerated concrete products comprises the following steps:

[0059] The first step is to transport the single-row multi-layer aerated concrete products on the steaming and curing vehicle to the billet conveying line 1, and under the cooperation of the billet clamp 16 and the billet separation clamp 2, the aerated concrete products are decomposed into single-layer billets for transportation.

[0060] Step 2: The marshaling conveyor line 3 receives the single-layer billets from the first step. During the transportation of the billets, the whole layer of billets is decomposed into single-section billets of required length by starting and stopping different sections of the marshaling conveyor line 3. Generally, the whole layer of billets is decomposed into single-section billets of 1.2 meters in length.

[0061] Step 3: The visual recognition system 4 takes photos of the single-section blanks in the second step section by section, collects image information from the top and both sides and performs comparative analysis. If a damaged or defective blank is detected, it is sent to the electronic control system through coding. The electronic control system then controls the sorting fixture 5 according to the received coding, outputs a control command to the sorting fixture 5, and the sorting fixture 5 clamps and takes out the detected damaged or defective blank.

[0062] Step 4: The marshaling conveyor line 3 re-groups the sorted blanks to form a complete section of 1.2-meter-long blanks, or re-groups to form blanks with a length of less than 1.2 meters, and transports them to the lifting roller table 6. The lifting roller table 6 combines the blanks with a length of 1.2 meters after marshaling on the marshaling conveyor line 3 to form a single-layer blank of 1.2 meters square; or combines the blanks with a length of less than 1.2 meters after marshaling on the marshaling conveyor line 3 to form a single-layer blank with the same width and a slightly smaller length for leaving a forklift hole.

[0063] Step 5: The stacking fixture 7 places the single-layer blank with a slightly shorter length for leaving forklift holes formed in the fourth step on the brick dividing platform 8. Through the action of the brick dividing platform 8, the blanks with a length of less than 1.2 meters are separated into three groups on both sides, and the length is extended to 1.2 meters, thereby leaving two holes for forklift tines to pass through, forming a forklift hole layer blank.

[0064] Step 6: The stacking fixture 7 stacks the 1.2-meter square single-layer blanks formed by the fourth step onto the transfer pallet 94 on the packaging conveyor line 9 to stack them into a brick stack of a certain height; then places the 1.2-meter square forklift hole layer blanks with fork tine space reserved, and then continues to place regular-sized 1.2-meter square single-layer blanks until the finished brick stack is stacked into the required height.

[0065] During the repeated stacking process of the stacking fixture 7, the upper layer of the forklift hole layer blanks is perpendicular to the direction of the forklift hole layer blanks, and other layers can also be cross-stacked at 90 degrees as needed until a finished brick stack of a required height is stacked.

[0066] Step 7: The packaging conveyor line 9 transports the finished bricks in the sixth step to the packaging or laminating station for bundling or laminating; when the sword baler is packaging, the sword passes through the gap on the transfer pallet 94 to complete the packaging operation of the finished brick stack, and finally the forklift is inserted into the forklift hole for unloading. The transfer pallet 94 is left on the packaging conveyor line 9 for reuse, completing the pallet-free packaging of aerated concrete products.

[0067] The brick piles packaged in this way have already sorted out the damaged ones in the blanks, which ensures that all the aerated concrete products sent to the site of use are intact, thereby improving the yield rate and reducing the transportation cost. When the forklift takes away the packed brick pile, the brick pile is separated from the transfer pallet 94 at the same time, and there is no need to recycle the pallet, which saves a lot of pallet production and maintenance costs for the aerated concrete product manufacturer and reduces the waste of resources. In addition, since the forklift can be used for both unloading and loading, the problem of high labor intensity and high labor costs during manual loading is solved.

[0068] It should be clarified that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0069] The above is only a preferred embodiment of the present invention. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A palletless intelligent sorting and packaging unit for aerated concrete products, characterized in that: include: A billet separation fixture (2) is arranged above a billet connection conveyor line (1) for receiving aerated concrete products, the billet separation fixture (2) and a billet connection fixture (16) on the billet connection conveyor line (1) cooperate to separate the aerated concrete products into single-layer billets for conveyance; The marshaling conveyor line (3) is used to decompose the single-layer blanks transmitted by the blank receiving conveyor line (1) and eliminate the gaps between the blanks to form single-section blanks of a required length; a visual recognition system (4) for detecting the integrity of the blanks is provided on one section of the marshaling conveyor line (3); and a lifting roller table (6) for combining the single-section blanks to form a single-layer blank of a required size is provided at the end of the marshaling conveyor line (3); A sorting fixture (5) receives a control command from the visual recognition system (4) and removes the detected damaged blanks; A brick separation platform (8) is used to separate a single-layer blank into a plurality of groups of single-layer sub-blanks, with forklift hole gaps formed between adjacent single-layer sub-blanks for forklift unloading; A packaging conveyor line (9) is fixed on the upper part of which a transfer tray (94) is moved synchronously with the transmission chain. The transfer tray (94) is provided with a plurality of gaps to form a space for sword-through packaging. A stacking clamp (7) for clamping the single-layer blanks on the lifting roller table (6) and the brick-dividing platform (8) is provided on one side of the input end of the packaging conveyor line (9); The blank separation clamp (2) comprises a fixed frame (21) arranged on the ground, a clamping device (22) and a lifting device (23); one end of the lifting device (23) is connected to the fixed frame (21), and the other end is connected to the clamping device (22); the clamping device (22) is provided with a gripper corresponding to the blank connection clamp (16); the lifting device (23) drives the clamping device (22) to move up and down, so that the clamped blank is separated from the blank in the lower layer; The marshaling conveying line (3) is composed of a plurality of marshaling conveying sections connected to each other at the end, each marshaling conveying section is provided with a marshaling frame (31), a conveying chain and two transmission shafts, the transmission shafts (32) are fixed at both ends of the marshaling frame (31), and a driving wheel and a driven wheel are installed on each transmission shaft (32), the driving wheel drives the conveying chain of the current section to move as the transmission shaft (32) rotates, and the driven wheel rotates with the transmission shaft (32) of the next section; The visual recognition system (4) comprises a frame (41), a plurality of cameras (42) and a computing module. The frame (41) spans across the marshaling conveyor line (3). The cameras (42) are arranged at different positions of the frame (41) to take pictures of different surfaces of each section of the blank. The computing module analyzes and processes image information collected by the cameras.

2. The trayless intelligent sorting and packaging unit for aerated concrete products according to claim 1 is characterized in that: The blank connection conveyor line (1), the blank separation fixture (2) and the grouping conveyor line (3) are arranged as one or more groups, which share a set of visual recognition system (4), sorting fixture (5), lifting roller platform (6), brick separation platform (8) and stacking fixture (7).

3. The trayless intelligent sorting and packaging unit for aerated concrete products according to claim 1 is characterized in that: The blank joining conveyor line (1) comprises a frame (13), a conveyor chain and a lifting platform (12) arranged in the middle of the frame. The lifting platform (12) carries the whole mold blank when it is raised, and can place the whole mold blank on the conveyor chain when it is lowered for transportation to the blank joining clamp (16).

4. The trayless intelligent sorting and packaging unit for aerated concrete products according to claim 1 is characterized in that: The brick-splitting platform (8) comprises a brick-splitting frame (83) fixed on the ground, a fixed plate (81) fixed on the top of the brick-splitting frame (83), and movable plates (82) arranged on both sides of the fixed plate (81); the two movable plates (82) can be separated or closed relative to the fixed plate (81) on the same horizontal plane under the action of a driving mechanism.

5. The trayless intelligent sorting and packaging unit for aerated concrete products according to claim 1 is characterized in that: The packaging conveyor line (9) is provided with a packaging machine and a laminating machine, and can complete fully automatic packaging and laminating after the packed bricks are in place.

6. The method for sorting and packaging aerated concrete products according to any one of claims 1 to 5, characterized in that: The following steps are involved: The first step is to transport the single-row multi-layer aerated concrete products on the steaming and curing vehicle to the billet conveying line (1), and under the cooperation of the billet connecting clamp (16) and the billet separating clamp (2), the aerated concrete products are separated into single-layer billets for transportation; Step 2: The marshaling conveyor line (3) receives the single-layer billet from the first step, and in the process of conveying the billet, the whole layer of billet is decomposed into single-section billets of required length by controlling the start and stop of different sections of the marshaling conveyor line (3); Step 3: The visual recognition system (4) collects image information of each section of the blank in the second step and performs comparative analysis, and outputs a control command to the sorting fixture (5), so that the sorting fixture (5) takes out the detected damaged blank; Step 4: The grouping conveyor line (3) regroups the sorted blanks to form single-section blanks of required length, which are then combined into single-layer blanks of required size via the lifting roller table (6); Step 5: The stacking fixture (7) places the single-layer blanks for leaving forklift holes formed by the combination in the fourth step on the brick separation platform (8), and separates the forklift hole layer blanks for forklift unloading; Step 6: The stacking fixture (7) stacks the single-layer green bodies of regular size formed by the combination in the fourth step onto the transfer pallet (94) to form a brick stack of a certain height, and then places the forklift hole layer green bodies in the fifth step, and then continues to place the single-layer green bodies of regular size until a finished brick stack of a required height is formed; Step 7: The packaging conveyor line (9) transports the finished bricks in step 6 to the packaging station, and passes through the gap on the transfer tray (94) to perform a tray-free packaging operation.

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