A foreign matter control process and system before material unpacking

Abstract

A foreign matter control process and system before material unpacking, the process comprising: S1: conveying an outer tray carrying bagged material to a target position of a feeding scanning area to obtain material information; S2: conveying the outer tray-material combination after obtaining the material information to a material blowing area, grabbing the bagged material to separate it from the outer tray, performing all-around blowing on the separated bagged material, and diverting the empty outer tray to a tray recycling position; S3: conveying an inner tray to the material blowing area, placing the blown bagged material on the inner tray to form an inner tray-material combination, and outputting the inner tray-material combination to an elevator, and lifting it to an unpacking machine for unpacking operation; the unpacking machine outputs the empty inner tray to the empty tray waiting position through the elevator. The application also includes a foreign matter control system before material unpacking. The application can effectively reduce the risk of introducing magnetic and non-magnetic foreign matters from the outside.

Description

Technical Field

[0001] This invention relates to the field of material handling technology, and in particular to a process and system for controlling foreign matter before unpacking materials. Background Technology

[0002] Bagged materials refer to materials packaged in flexible bags, such as ton bags. These bags have a large capacity, capable of holding hundreds of kilograms to several tons of material. They are generally made of polyester fibers such as polypropylene and polyethylene, and are characterized by simple structure, light weight, foldability, recyclability, small space occupation, and low price. Due to these characteristics, ton bags are widely used in industries such as chemicals, building materials, plastics, and minerals, and are especially suitable for packaging and transporting powdery, granular, and lumpy items. When used with cranes or forklifts, they can achieve unitized transport.

[0003] In automated bag-breaking operations for ton bags, effectively controlling and reducing magnetic and non-magnetic foreign objects carried by the bag's surface and other factors has always been a key aspect of ensuring material cleanliness and quality. However, in existing bag-breaking and material handling processes, on the one hand, foreign objects may adhere to the bag surface during ton bag transportation. After the bags are opened in the unpacking area, these foreign objects are carried into the material, severely affecting its cleanliness. On the other hand, pallets may also carry foreign objects during transportation, thus contaminating the ton bags and further affecting the material's cleanliness.

[0004] It can be said that existing automated bag-breaking equipment cannot completely remove magnetic and non-magnetic foreign objects introduced from the external environment during the process. Therefore, this invention urgently needs to design a foreign object control technology before unpacking materials to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned shortcomings of the prior art and provide a foreign matter control process and system for materials with high cleanliness before unpacking.

[0006] The technical solution of this invention is:

[0007] One aspect of the present invention is a foreign matter control process before unpacking materials, comprising the following steps:

[0008] S1: Transport the outer pallet containing bagged materials to the target location in the loading and scanning area to obtain material information;

[0009] S2: After obtaining the material information, the outer pallet-material assembly is transported to the material blowing area. The bagged material is grabbed in the material blowing area to separate it from the outer pallet. The separated bagged material is blown in all directions, and the empty outer pallet is diverted and transferred to the pallet recycling position.

[0010] S3: Convey the inner pallet to the material blowing area, place the blown bagged material onto the inner pallet to form an inner pallet-material assembly, output the inner pallet-material assembly to the elevator, and lift it to the unpacking machine for unpacking operation; the unpacking machine outputs an empty inner pallet, which enters the empty pallet waiting position via the elevator. After receiving the pallet shift information, the inner pallet is conveyed to the material blowing area to wait for the next bagged material dropping operation;

[0011] S4: Outputs the waste bags after unpacking bagged materials.

[0012] Furthermore, in S2, the outer pallet-material assembly after obtaining material information is transported to the material purging area through the pallet transfer area, and the outer pallet returning from the material purging area is transported to the pallet recycling position through the pallet transfer area.

[0013] Furthermore, in S3, the conveying path between the inner tray and the material blowing area is configured in a closed channel, and the inner tray can be blown clean after being conveyed to the material blowing area.

[0014] Furthermore, in S3, the inner pallet-material assembly output from the material purging area first enters the automatic scanning area to obtain material information, and then enters the elevator through the material turning area to be lifted to the unpacking machine for unpacking operation; afterwards, the elevator outputs an empty inner pallet, which is turned through the material turning area and then transported to the empty pallet waiting position. After receiving the pallet shifting information, the inner pallet sequentially enters the material purging area through the material turning area and the automatic scanning area.

[0015] Furthermore, it also includes operational avoidance procedures between the outer pallet-material assembly, the outer pallet, the inner pallet-material assembly, and the inner pallet:

[0016] After detecting that an outer pallet has entered the pallet recycling position, the system controls the next outer pallet-material assembly located in the loading scanning area to enter the pallet transfer area to wait.

[0017] After detecting that the inner pallet has entered the empty pallet waiting position, the inner pallet-material assembly is controlled to be conveyed from the material purging area to the elevator; and when the inner pallet-material assembly passes through the automatic scanning area during the conveying process, the outer pallet-material assembly waiting in the pallet conversion area is controlled to enter the material purging area according to the scanning information; and when the next outer pallet-material assembly enters the loading scanning area, the outer pallet in the material purging area is controlled to be conveyed back to the pallet recycling position according to the scanning information, and the empty inner pallet in the empty pallet waiting position is controlled to be conveyed to the material purging area.

[0018] A foreign matter control system before unpacking materials according to the present invention includes:

[0019] The loading and scanning area is used to receive the outer pallet-material assembly and obtain material information.

[0020] The pallet conversion area is used to change the orientation position, send the outer pallet-material assembly to the material purging area, and transport the outer pallet returning from the material purging area to the pallet recycling position;

[0021] The material purging area is used to grab bagged materials and separate them from the outer pallet, and to purge the separated bagged materials from all directions.

[0022] The enclosed passage is used to transport the inner pallet-material assembly from the material purging area to the elevator, and also to send the empty inner pallet output by the elevator to the material purging area.

[0023] The elevator is used to lift the inner pallet-material assembly to the unpacking machine and output the empty inner pallet to the empty pallet waiting position;

[0024] The unpacking machine is used to unpack bagged materials and return the empty inner pallet to the elevator.

[0025] Furthermore, the sealing channel includes:

[0026] The indoor conveyor line is used to transport the inner tray-material assembly output from the material purging area to the automatic scanning area.

[0027] Automatic scanning area is used to acquire material information of the inner pallet-material assembly;

[0028] The material turning area is used in conjunction with the automatic scanning area to deliver the inner pallet-material assembly to the elevator, and also to deliver the empty inner pallet output by the elevator to the empty pallet waiting position or the automatic scanning area.

[0029] The empty pallet waiting position is used to receive inner pallets from the material turning area and also to output inner pallets, allowing them to pass sequentially through the material turning area, automatic scanning area, and indoor conveyor line into the material blowing area.

[0030] Furthermore, the feeding scanning area, pallet conversion area, and material blowing area are arranged horizontally in sequence, and the pallet recycling position is located on one side of the pallet conversion area; the empty pallet waiting position, automatic scanning area, and material turning area are located in the same horizontal direction, and the automatic scanning area and empty pallet waiting position are located on both sides of the material turning area, and the output end of the material turning area is connected to the feed end of the elevator.

[0031] Furthermore, the pallet conversion area, automatic scanning area, and material turning area are all equipped with turntable rollers for changing the conveying direction; the output end of the elevator is connected to two unpacking machines through the unpacking machine conveyor line and the turntable distribution area; each unpacking machine is located on both sides of the turntable distribution area; the turntable distribution area is also equipped with turntable rollers, which are used to send the inner pallet-material assembly to the unpacking machine, and also to return the empty inner pallet output by the unpacking machine to the elevator by turning.

[0032] Furthermore, it also includes a control system, which is used to control the next outer pallet-material assembly located in the loading scanning area to enter the pallet conversion area to wait after detecting that the outer pallet has entered the pallet recycling position; to control the inner pallet-material assembly to be transported from the material purging area to the elevator after detecting that the inner pallet has entered the empty pallet waiting position; to control the outer pallet-material assembly waiting in the pallet conversion area to enter the material purging area according to the scanning information of the automatic scanning area; and to control the outer pallet located in the material purging area to be transported back to the pallet recycling position according to the scanning information of the loading scanning area, while controlling the empty inner pallet located in the empty pallet waiting position to be transported to the material purging area.

[0033] The beneficial effects of this invention are as follows: Firstly, it can perform six-sided blowing to clean the material before it enters the unpacking machine, preventing foreign objects adhering to the surface of the ton bag from entering the unpacking area. Furthermore, by coordinating the outer pallet with the inner pallet, the outer pallet does not enter the unpacking area and only needs to pass through the inner pallet in the unpacking area for internal circulation. This effectively reduces the risk of introducing magnetic and non-magnetic foreign objects from the outside and greatly improves the cleanliness of the material. Secondly, by designing the outer pallet-ton bag assembly, the outer pallet, the inner pallet-ton bag assembly, and the operational avoidance between the inner pallets, the overall production line's capacity cycle time is effectively improved. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure of the foreign object control system according to an embodiment of the present invention;

[0035] Figure 2 yes Figure 1 A partially enlarged schematic diagram of the embodiment shown;

[0036] Figure 3 This is a flowchart illustrating the foreign object control method according to an embodiment of the present invention.

[0037] Explanation of reference numerals in the attached diagram:

[0038] 1. Feeding and scanning area; 2. Pallet transfer area; 3. Material blowing area; 4. Elevator; 5. Unpacking machine; 6. Pallet recycling station; 7. Empty pallet waiting station; 8. Indoor conveyor line; 9. Automatic scanning area; 10. Material turning area; 11. Forklift; 12. Unpacking machine conveyor line; 13. Turntable material sorting area; 14. Waste bag conveyor line. Detailed Implementation

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

[0040] like Figure 1 and Figure 2 The diagram illustrates a foreign matter control system for materials before unpacking. It includes a control system and, sequentially arranged along the bagged material conveying path, a feeding scanning area 1, a pallet transfer area 2, a material blowing area 3, a sealed passage, an elevator 4, and at least one unpacking machine 5. In this embodiment, the bagged material refers to material with packaging bags, such as ton bags. The following explanation uses ton bags as an example.

[0041] The material loading and scanning area 1 is used to receive the outer pallet-ton bag assembly and obtain material information;

[0042] Pallet conversion area 2 is used to change the direction position, send the outer pallet-ton bag assembly to the material blowing area 3, and transport the outer pallet returning from the material blowing area to the pallet recycling position 6;

[0043] Material purging zone 3 is used to grab the ton bags and separate them from the outer pallet, and to purge the separated ton bags in all directions;

[0044] A closed channel is used to transport inner pallet-ton bag assemblies (or pallet ton bags for short, see [link]). Figure 3 It is used to transport materials from the material purging area 3 to the elevator 4, and also to send the empty inner pallet output by the elevator 4 to the material purging area 3;

[0045] Elevator 4 is used to lift the inner pallet-ton bag assembly to unpacking machine 5 and output empty inner pallets to empty pallet waiting position 7;

[0046] Unpacking machine 5 is used to unpack ton bags and return the empty inner pallet to elevator 4.

[0047] The sealed channel includes:

[0048] Indoor conveyor line 8 is used to send the inner pallet-ton bag assembly output from material blowing area 3 to automatic scanning area 9;

[0049] Automatic scanning area 9 is used to acquire material information of the inner pallet-ton bag assembly;

[0050] The material turning area 10 is used in conjunction with the automatic scanning area 9 to send the inner pallet-ton bag assembly to the elevator 4. It is also used to send the empty inner pallet output by the elevator 4 to the empty pallet waiting position 7 or the automatic scanning area 9.

[0051] The empty pallet waiting position 7 is used to receive the inner pallet conveyed by the material turning area 10, and also to output the inner pallet, so that the inner pallet passes through the material turning area 10, the automatic scanning area 9 and the indoor conveyor line 8 in sequence into the material blowing area 3.

[0052] The foreign object control system in this embodiment also includes a control system, which is used to control the next outer pallet-ton bag assembly located in the loading scanning area 1 to enter the pallet conversion area 2 to wait after detecting that the outer pallet has entered the pallet recycling position 6; to control the inner pallet-ton bag assembly to be transported from the material blowing area 3 to the elevator 4 after detecting that the inner pallet has entered the empty pallet waiting position 7; to control the outer pallet-ton bag assembly waiting in the pallet conversion area 2 to enter the material blowing area 3 according to the scanning information of the automatic scanning area 9; and to control the outer pallet located in the material blowing area 3 to be transported back to the pallet recycling position 6 according to the scanning information of the loading scanning area 1, while controlling the empty inner pallet located in the empty pallet waiting position 7 to be transported to the material blowing area 3.

[0053] like Figure 3 As shown: This embodiment describes a method for controlling foreign matter before unpacking materials, including the following steps:

[0054] S101: Transport the outer pallet carrying the ton bag to the target position of the loading scanning area 1 to obtain the material information of the ton bag;

[0055] Specifically, the forklift 11 transports the outer pallet carrying the ton bag to the target position of the loading scanning area 1. When the outer pallet reaches the target position, the scanning device in the loading scanning area 1 automatically collects the material information of the ton bag. The material information includes, but is not limited to, the material name and the ton bag model, and transmits the material information to the control system.

[0056] S102: The outer pallet-ton bag assembly after obtaining material information is conveyed to the material blowing area 3. The ton bag is grabbed in the material blowing area 3 to separate it from the outer pallet. The separated ton bag is blown in all directions, and the empty outer pallet is diverted and transferred to the pallet recycling position 6.

[0057] Specifically, after acquiring material information, the outer pallet-ton bag assembly is conveyed to the material purging area 3 via the pallet transfer area 2. The loading scanning area 1, pallet transfer area 2, and material purging area 3 are arranged horizontally in sequence, with a pallet recovery position 6 on one side of the pallet transfer area 2. The pallet transfer area 2 is used to convey the outer pallet-ton bag assembly and the outer pallet in different directions: sending the outer pallet-ton bag assembly to the material purging area 3, and conveying the outer pallet returning from the material purging area 3 to the pallet recovery position 6, ultimately for storage in the pallet warehouse. More specifically, the pallet transfer area 2 includes a turntable roller, which in turn includes a roller conveyor line and a turntable base supporting the entire roller conveyor line; the roller conveyor line is responsible for the linear conveying of materials; the turntable base is used to drive the roller conveyor line to rotate, changing its conveying direction, for example, conveying the outer pallet-ton bag assembly forward and empty outer pallets to the left.

[0058] Material purging zone 3 is used for multi-sided purging of ton bags to prevent foreign objects adhering to the outer surface of the ton bags from entering the unpacking machine. Material purging zone 3 includes an air shower chamber, which is equipped with a gripping mechanism, a purging conveyor line, and an air shower purging mechanism. The gripping mechanism grips the ton bags, separating them from the outer pallet, and then the air shower purging mechanism purifies the ton bags from all six sides. The outer pallet is conveyed backward by the purging conveyor line to the turntable roller, and then to the pallet recovery position 6 via the turntable roller; the ton bags, after purging, are conveyed forward by the purging conveyor line to the sealed channel. Soft curtain doors can be installed at both the inlet and outlet of the air shower chamber to isolate the air shower chamber from external equipment, facilitating the input and output of ton bags while maintaining the cleanliness of the air shower chamber. This embodiment, by purging the ton bags from all six sides, greatly improves the cleanliness of the outer surface of the ton bags, effectively reducing the risk of introducing magnetic and non-magnetic foreign objects from the outside.

[0059] The main operating steps of this embodiment are as follows: After scanning, the outer pallet-ton bag assembly is conveyed to the material blowing area 3 via the turntable roller in the pallet conversion area 2, i.e., entering the air shower chamber, which is equipped with multiple air shower nozzles. The air shower chamber is equipped with a detection sensor to detect whether the outer pallet-ton bag assembly is in place. When it is detected that it is in place, the control system controls the gripping mechanism to descend, gripping the ton bag and moving it upward to the target position. The gripped ton bag is then blown on all six sides through the multiple air shower nozzles. During the cleaning of the ton bag, the outer pallet is output along the blowing conveyor line inside the air shower chamber, and after being turned by the turntable roller, it is sent to the pallet recycling position for recycling. After being blown clean, the ton bag is output from the soft curtain door at the output port of the air shower chamber and enters the next process, i.e., the sealed passage, where the air shower chamber is separated by the soft curtain door.

[0060] S103: Convey the inner pallet to the material blowing area 3, and place the cleaned ton bag after blowing onto the inner pallet to form an inner pallet-ton bag assembly. Output the inner pallet-ton bag assembly to the elevator 4, and then lift it to the unpacking machine 5 for unpacking operation. The unpacking machine 5 outputs an empty inner pallet, which enters the empty pallet waiting position 7 via the elevator 4. After receiving the pallet relocation information, the inner pallet is conveyed to the material blowing area 3 to wait for the next ton bag dropping operation.

[0061] Specifically, the aforementioned conveying path from the material purging area to the elevator takes place within a sealed passage. The sealed passage is equipped with an indoor conveyor line 8 connected to the air shower, and sequentially connected to the indoor conveyor line 8 are an automatic scanning area 9, a material turning area 10, and an empty pallet waiting position 7. The material turning area 10 is positioned opposite the feed inlet of the elevator 4. The automatic scanning area 9, the material turning area 10, and the empty pallet waiting position 7 are located at the same horizontal level, with the automatic scanning area 9 and the empty pallet waiting position 7 located on either side of the material turning area 10.

[0062] Both the automatic scanning area 9 and the material turning area 10 are equipped with turntable rollers. These two turntable rollers work together to reposition the inner pallet-ton bag assembly from the material blowing area 3 to the elevator 4. They also transport empty inner pallets output from the elevator 4 to the empty pallet waiting position 7. The inner pallets then sequentially pass through the material turning area 10, the automatic scanning area 9, and the indoor conveyor line 8 before entering the material blowing area 3. By setting up a sealed channel, the cleanliness of the ton bags after blowing is maintained, reducing the risk of introducing magnetic and non-magnetic foreign objects from the outside. Simultaneously, it ensures that the internal circulation of the inner pallets is not contaminated by the external environment, thus guaranteeing the cleanliness of the ton bags.

[0063] After the inner pallet-ton bag assembly enters the sealed passage, a soft curtain door separates the air shower room from the sealed passage. The inner pallet-ton bag assembly is conveyed along the indoor conveyor line 8 to the automatic scanning area 9. The scanning equipment installed on the side scans the inner pallet-ton bag assembly to verify whether its information is consistent with the first scan, thereby ensuring that the ton bag enters the process normally. After the inner pallet-ton bag assembly passes through the automatic scanning area 9 and the turntable rollers of the material turning area 10, it enters the elevator 4 to be lifted to the unpacking machine 5 for unpacking operation. Afterwards, the elevator 4 outputs an empty inner pallet, which is turned by the turntable rollers of the material turning area 10 and conveyed to the empty pallet waiting position. After receiving the pallet relocation information, the inner pallet enters the air shower room of the material blowing area 3 through the material turning area 10, the automatic scanning area 9, and the indoor conveyor line 8 to receive the next blown ton bag.

[0064] The unpacking machine 5 is a device used to remove the outer packaging bags of materials to release the materials inside. Preferably, two unpacking machines 5 are provided, namely unpacking machine A and unpacking machine B, to improve work efficiency. The output end of the elevator 4 is connected to the two unpacking machines via the unpacking machine conveyor line 12 and the turntable distribution area 13, with unpacking machine A and unpacking machine B located on opposite sides of the turntable distribution area 13. The turntable distribution area 13 is equipped with turntable rollers, used to convey the inner pallet-ton bag assembly to unpacking machine A or unpacking machine B, and also to return the empty inner pallets output by unpacking machine A or unpacking machine B to the elevator 4 via a turning mechanism, and then the elevator 4 descends to the empty pallet waiting position 7.

[0065] S104: Output waste bags after unpacking the ton bags.

[0066] Specifically, waste bag conveying line 14 is provided on one side of the waste bag output port of unpacking machine A and unpacking machine B for outputting the unpacked waste bags.

[0067] It is understood that the aforementioned conveyor lines can be conveyor belts or conveyor rollers, and in this embodiment, conveyor rollers are preferred.

[0068] It is understood that after the inner tray is sent to the material blowing area 3 in this embodiment, the inner tray can also be blown in all directions by the air shower blowing mechanism to reduce the risk of introducing magnetic and non-magnetic foreign objects from the outside.

[0069] It is understood that this embodiment also sets detection points in the required areas to prevent collisions between the outer pallet-ton bag assembly and the empty outer pallet, and between the inner pallet-ton bag assembly and the empty inner pallet during transportation. A preferred embodiment of this embodiment is as follows:

[0070] An outer pallet detection sensor is installed at pallet recycling position 6. After an outer pallet enters pallet recycling position 6, it sends information to the control system. The control system then controls the next outer pallet-ton bag assembly located in loading scanning area 1 to enter pallet conversion area 2 to wait.

[0071] An inner pallet detection sensor is installed at the empty pallet waiting position 7. Upon detecting an inner pallet entering the empty pallet waiting position 7, the sensor sends information to the control system, which then controls the inner pallet-ton bag assembly to be conveyed from the material blowing area 3 to the elevator 4. When the inner pallet-ton bag assembly passes through the automatic scanning area 9 during conveyance, the scanning equipment there sends scan information to the control system. The control system then controls the outer pallet-ton bag assembly waiting in the pallet transfer area 2 to enter the material blowing area 3. Similarly, when the next outer pallet-ton bag assembly enters the loading scanning area 1, the scanning equipment there sends scan information to the control system, which then controls the outer pallet in the material blowing area 3 to be conveyed back to the pallet recovery position 6. Simultaneously, it controls the empty inner pallet at the empty pallet waiting position 7 to be conveyed to the air shower chamber in the material blowing area 3. This cycle repeats, achieving avoidance between the outer pallet-ton bag assembly, the outer pallet, the inner pallet-ton bag assembly, and the inner pallet, effectively improving the overall production line's cycle time.

[0072] It is understood that the above-mentioned transport body can also achieve the operation avoidance in other ways in this embodiment, such as by setting an interval time to achieve staggered transport.

[0073] It is understandable that the aforementioned detection sensor can be a camera or a photoelectric sensor.

[0074] It is understood that the scanning equipment in the material loading scanning area and the automatic scanning area of ​​this embodiment can be used to detect material information and to notify the control system through the detected information, so as to realize the operation and avoidance between the outer pallet-ton bag assembly, the outer pallet, the inner pallet-ton bag assembly, and the inner pallet.

[0075] In summary, this invention, through its foreign matter control method and system, achieves two main benefits. First, it enables six-sided blowing of materials before they enter the unpacking machine, preventing foreign matter adhering to the surface of the ton bags from entering the unpacking area. Furthermore, by coordinating the outer and inner pallets, the outer pallet does not enter the unpacking area; instead, it allows internal flow through the inner pallet within the unpacking area. This effectively reduces the risk of introducing magnetic and non-magnetic foreign matter from the outside, significantly improving material cleanliness. Second, by designing the outer pallet-ton bag assembly, the outer pallet, the inner pallet-ton bag assembly, and the operational avoidance between the inner pallets, the overall production line's capacity cycle time is effectively improved.

[0076] Furthermore, the term "connection" should be interpreted broadly, for example, it can include fixed connections, detachable connections, or integral connections; it can include direct connections or indirect connections through an intermediate medium, and it can also include internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0077] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0078] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A foreign matter control process before unpacking materials, characterized in that, Includes the following steps: S1: Transport the outer pallet containing bagged materials to the target location in the loading and scanning area to obtain material information; S2: After obtaining the material information, the outer pallet-material assembly is transported to the material blowing area. The bagged material is grabbed in the material blowing area to separate it from the outer pallet. The separated bagged material is blown in all directions, and the empty outer pallet is diverted and transferred to the pallet recycling position. S3: Convey the inner pallet to the material blowing area, place the blown bagged material onto the inner pallet to form an inner pallet-material assembly, output the inner pallet-material assembly to the elevator, and lift it to the unpacking machine for unpacking operation; the unpacking machine outputs an empty inner pallet, which enters the empty pallet waiting position via the elevator. After receiving the pallet shift information, the inner pallet is conveyed to the material blowing area to wait for the next bagged material dropping operation; S4: Outputs the waste bags after unpacking bagged materials; It also includes the following operational avoidance steps between the outer pallet-material assembly, the outer pallet, the inner pallet-material assembly, and the inner pallet: after detecting that the outer pallet has entered the pallet recycling position, the next outer pallet-material assembly located in the loading scanning area is controlled to enter the pallet conversion area to wait; after detecting that the inner pallet has entered the empty pallet waiting position, the inner pallet-material assembly is controlled to be transported from the material purging area to the elevator; and when the inner pallet-material assembly passes through the automatic scanning area during the transportation process, the outer pallet-material assembly waiting in the pallet conversion area is controlled to enter the material purging area according to the scanning information; and when the next outer pallet-material assembly enters the loading scanning area, the outer pallet located in the material purging area is controlled to be transported back to the pallet recycling position according to the scanning information, and the empty inner pallet located in the empty pallet waiting position is controlled to be transported to the material purging area.

2. The foreign matter control process before unpacking materials according to claim 1, characterized in that, In S2, the outer pallet-material assembly after obtaining material information is transported to the material purging area through the pallet transfer area, and the outer pallet returning from the material purging area is transported to the pallet recycling position through the pallet transfer area.

3. The foreign matter control process before unpacking materials according to claim 1, characterized in that, In S3, the conveying path between the inner tray and the material blowing area is configured in a closed channel, and the inner tray can be blown clean after being conveyed to the material blowing area.

4. The foreign matter control process before unpacking materials according to claim 3, characterized in that, In S3, the inner pallet-material assembly output from the material purging area first enters the automatic scanning area to obtain material information, and then enters the elevator through the material turning area to be lifted to the unpacking machine for unpacking operation; afterwards, the elevator outputs an empty inner pallet, which is turned through the material turning area and then transported to the empty pallet waiting position. After receiving the pallet shifting information, the inner pallet sequentially enters the material purging area through the material turning area and the automatic scanning area.

5. A foreign matter control system before unpacking materials, characterized in that, include: The loading and scanning area is used to receive the outer pallet-material assembly and obtain material information. The pallet conversion area is used to change the orientation position, send the outer pallet-material assembly to the material purging area, and transport the outer pallet returning from the material purging area to the pallet recycling position; The material purging area is used to grab bagged materials and separate them from the outer pallet, and to purge the separated bagged materials from all directions. The enclosed passage is used to transport the inner pallet-material assembly from the material purging area to the elevator, and also to send the empty inner pallet output by the elevator to the material purging area. The elevator is used to lift the inner pallet-material assembly to the unpacking machine and output the empty inner pallet to the empty pallet waiting position; The unpacking machine is used to unpack bagged materials and return the empty inner pallet to the elevator; The sealed passage includes: The indoor conveyor line is used to transport the inner tray-material assembly output from the material purging area to the automatic scanning area. Automatic scanning area is used to acquire material information of the inner pallet-material assembly; The material turning area is used in conjunction with the automatic scanning area to deliver the inner pallet-material assembly to the elevator, and also to deliver the empty inner pallet output by the elevator to the empty pallet waiting position or the automatic scanning area. The empty pallet waiting position is used to receive inner pallets from the material turning area and also to output inner pallets, so that the inner pallets pass through the material turning area, the automatic scanning area and the indoor conveyor line in sequence into the material blowing area. It also includes a control system, which is used to control the next outer pallet-material assembly located in the loading scanning area to enter the pallet transfer area to wait after detecting that the outer pallet has entered the pallet recycling position; to control the inner pallet-material assembly to be transported from the material purging area to the elevator after detecting that the inner pallet has entered the empty pallet waiting position; to control the outer pallet-material assembly located in the pallet transfer area to enter the material purging area according to the scanning information of the automatic scanning area; and to control the outer pallet located in the material purging area to be transported back to the pallet recycling position according to the scanning information of the loading scanning area, while controlling the empty inner pallet located in the empty pallet waiting position to be transported to the material purging area.

6. The foreign matter control system before unpacking materials according to claim 5, characterized in that, The feeding scanning area, pallet conversion area, and material blowing area are arranged horizontally in sequence, and the pallet recycling position is located on one side of the pallet conversion area; the empty pallet waiting position, automatic scanning area, and material turning area are located in the same horizontal direction, and the automatic scanning area and empty pallet waiting position are located on both sides of the material turning area, and the output end of the material turning area is connected to the feed end of the elevator.

7. The foreign matter control system before unpacking materials according to claim 5 or 6, characterized in that, The pallet conversion area, automatic scanning area, and material turning area are all equipped with turntable rollers for changing the conveying direction; the output end of the elevator is connected to two unpacking machines through the unpacking machine conveyor line and the turntable distribution area; each unpacking machine is located on both sides of the turntable distribution area; the turntable distribution area is also equipped with turntable rollers, which are used to send the inner pallet-material assembly to the unpacking machine, and also to return the empty inner pallet output by the unpacking machine to the elevator by turning.

Images