Material conveying device and its control method

Abstract

The present application discloses a material conveying device and a control method thereof. The device includes a first conveying unit, a second conveying unit, a transfer conveying device and a control unit. The transfer conveying device receives materials, and the control unit is configured to control the transfer conveying device to selectively convey the received materials to the first conveying unit or the second conveying unit. The control unit is further configured to control the second conveying unit to selectively convey the materials received by the second conveying unit to the first conveying unit or the non-conforming product station in a predetermined order, or to circulate the materials within the second conveying unit. The first conveying unit is connected to the next station and is configured to convey the materials received by the first conveying unit to the next station. The above solution realizes the efficient flow of materials, thereby improving the work efficiency.

Description

Technical Field

[0001] The present invention generally relates to the technical field of transmission pipeline devices, and more particularly to a material conveying device and a control method thereof. Background Art

[0002] Currently, in the production process of crystalline silicon solar cells, first, silicon raw materials are made into silicon rods through the crystal pulling process in a single crystal furnace, then the silicon rods are subjected to mechanical processing procedures such as cutting and squaring to obtain square silicon rods, and then the square silicon rods are sliced to obtain silicon wafers, and then crystalline silicon solar cells are made from the silicon wafers.

[0003] Currently, when performing mechanical processing such as cutting and squaring (cutting a round silicon rod into a square) on silicon rods, it is necessary to detect the oxygen-carbon and resistance life of the head and tail segments of the round silicon rods after cutting multiple silicon rods pulled from the same furnace (pot). Only the round silicon rods with qualified oxygen-carbon and resistance life can be conveyed to the next process for squaring. Since the detection of oxygen-carbon data is limited by monitoring means and requires a long waiting time, this results in the round silicon rods to be detected waiting in the oxygen-carbon detection loop for a long time and cannot be output in time, leading to the accumulation of round silicon rods in the oxygen-carbon detection loop and unable to meet the demand for efficient material flow, thus affecting production efficiency. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a material conveying device and a control method thereof, at least for improving production efficiency.

[0005] In a first aspect, the present invention provides a material conveying device, comprising:

[0006] A first conveying unit, a second conveying unit, a transfer conveying device and a control unit;

[0007] The transfer conveying device receives materials, and the control unit is configured to control the transfer conveying device to selectively convey the received materials to the first conveying unit or the second conveying unit;

[0008] The control unit is further configured to control the second conveying unit to selectively and in a predetermined order convey the materials received by the second conveying unit to the first conveying unit or a non-conforming product station, or circulate the materials within the second conveying unit;

[0009] The first conveying unit is connected to the next process and is configured to convey the materials received by the first conveying unit to the next process.

[0010] As an implementable mode, the control unit includes a first material information reading module and a control module:

[0011] The first material information reading module is configured to read at least the identification information of the material conveyed from the loading position to the transfer conveying device, and the identification information is used to characterize that the material belongs to a certain segmented section of a certain silicon rod among multiple silicon rods in the same furnace.

[0012] The control module is configured to control the transfer conveying device to selectively convey the material to the first conveying unit or the second conveying unit according to the identification information.

[0013] As an implementable manner, it further includes:

[0014] A material information writing module, which is configured to write identification information to the material to be conveyed from the loading position to the transfer conveying device.

[0015] As an implementable manner, the transfer conveying device includes a first transfer machine or a grasping manipulator.

[0016] As an implementable manner, the first material information reading module is arranged at the position of the transfer conveying device.

[0017] As an implementable manner, the control unit further includes a second material information reading module, which is configured to read the identification information of the material conveyed in the second conveying unit;

[0018] The control module is further configured to control the second conveying unit to selectively and in a predetermined order convey the material received by the second conveying unit to the first conveying unit or the non-conforming product station, or circulate the material in the second conveying unit according to the corresponding relationship between the identification information and the detection result.

[0019] As an implementable manner, the first conveying unit includes a first linear conveying unit and a second linear conveying unit, and the conveying directions of the first linear conveying unit and the second linear conveying unit are perpendicular to each other; the first linear conveying unit and the second linear conveying unit can convey materials to each other.

[0020] As an implementable manner, the first linear conveying unit includes a first linear sub-conveying unit and a second linear sub-conveying unit arranged one above the other;

[0021] The second linear conveying unit includes a third linear sub-conveying unit and a fourth linear sub-conveying unit arranged one above the other;

[0022] The transfer conveying device is located at the first end of the first linear sub-conveying unit;

[0023] A second transfer machine is provided at the second end of the first linear sub-conveyor unit or the first end of the third linear sub-conveyor unit, and the second transfer machine is used for material transfer between the first linear sub-conveyor unit and the third linear sub-conveyor unit;

[0024] A first lifting conveyor is provided at the second end of the third linear sub-conveyor unit, and the first lifting conveyor is used for material transfer between the third linear sub-conveyor unit and the fourth linear sub-conveyor unit;

[0025] A third transfer machine is provided at the first end of the fourth linear sub-conveyor unit or the second end of the second linear sub-conveyor unit, and the third transfer machine is used for material transfer between the fourth linear sub-conveyor unit and the second linear sub-conveyor unit.

[0026] As an implementable mode, a fifth lifting conveyor is provided between the transfer device and the first end of the first linear sub-conveyor unit, and the fifth lifting conveyor is at least used for material transfer between the first linear sub-conveyor unit and the second linear sub-conveyor unit.

[0027] As an implementable mode, it further includes:

[0028] A third conveyor unit, which includes a fifth linear sub-conveyor unit and a sixth linear sub-conveyor unit arranged one above the other;

[0029] The fifth linear sub-conveyor unit is used to convey materials to the transfer device;

[0030] A fourth transfer machine is provided below the transfer device, and the fourth transfer machine is used for material transfer between the sixth linear sub-conveyor unit and the second linear sub-conveyor unit.

[0031] As an implementable mode, a sixth lifting conveyor is provided at one end of the fifth linear sub-conveyor unit away from the transfer device, and the sixth lifting conveyor is at least used for material transfer between the fifth linear sub-conveyor unit and the sixth linear sub-conveyor unit.

[0032] As an implementable mode, it further includes:

[0033] At least one fourth conveyor unit, the transmission direction of the fourth conveyor unit is perpendicular to the transmission direction of the third conveyor unit, and the fourth conveyor unit includes a seventh linear sub-conveyor unit and an eighth linear sub-conveyor unit arranged one above the other;

[0034] A fifth transfer machine is provided at the first end of the seventh linear sub-conveyor unit or the second end of the fifth linear sub-conveyor unit, and the fifth transfer machine is used for transferring materials between the seventh linear sub-conveyor unit and the fifth linear sub-conveyor unit;

[0035] A second lifting conveyor 6 is provided at the second end of the seventh linear sub-conveyor unit, and the second lifting conveyor 6 is used for transferring materials between the seventh linear sub-conveyor unit and the eighth linear sub-conveyor unit;

[0036] A sixth transfer machine is provided at the first end of the eighth linear sub-conveyor unit or the second end of the sixth linear sub-conveyor unit, and the sixth transfer machine is used for transferring materials between the eighth linear sub-conveyor unit and the sixth linear sub-conveyor unit.

[0037] As an implementable manner, a material information writing module is provided at the seventh linear sub-conveyor unit.

[0038] As an implementable manner, the second conveyor unit includes a ninth linear sub-conveyor unit and a tenth linear sub-conveyor unit arranged one above the other;

[0039] A third lifting conveyor and a fourth lifting conveyor are respectively provided at the first end and the second end of the ninth linear sub-conveyor unit, and the third lifting conveyor and the fourth lifting conveyor respectively transfer materials between the ninth linear sub-conveyor unit and the tenth linear sub-conveyor unit.

[0040] As an implementable manner, the first linear sub-conveyor unit, the second linear sub-conveyor unit, the third linear sub-conveyor unit, the fourth linear sub-conveyor unit, the fifth linear sub-conveyor unit, the sixth linear sub-conveyor unit, the seventh linear sub-conveyor unit, the eighth linear sub-conveyor unit, the ninth linear sub-conveyor unit and the tenth linear sub-conveyor unit are roller conveyors and / or double-speed chain conveyors.

[0041] In a second aspect, the present invention provides a control method for the above-mentioned material conveying device, including the following steps:

[0042] Obtain the identification information of the materials received by the transfer device, and the identification information is used to characterize that the materials belong to a certain segment of a certain one of multiple silicon rods in the same furnace;

[0043] According to the mapping relationship between the identification information and the transfer direction, control the transfer device to selectively transfer the materials to the first conveyor unit or the second conveyor unit;

[0044] Control the second conveying unit to selectively convey the received materials to the first conveying unit or the non-conforming product station in a predetermined order, or circulate and convey the materials within the second conveying unit;

[0045] Control the first conveying unit to convey the received materials to the next station.

[0046] As an implementable mode, when the first conveying unit includes a first linear sub-conveying unit, a second linear sub-conveying unit, a third linear sub-conveying unit, a fourth linear sub-conveying unit, a first lifting conveyor and a fifth lifting conveyor,

[0047] Control the materials conveyed to the first conveying unit to circulate and convey between the first linear sub-conveying unit, the second linear sub-conveying unit, the third linear sub-conveying unit, the fourth linear sub-conveying unit, the first lifting conveyor and the fifth lifting conveyor.

[0048] In the above solution, according to whether the materials need to be detected for oxygen-carbon and resistance life, the materials can be selectively conveyed to the first conveying unit or the second conveying unit through the transfer conveying device. For example, the materials that do not need to be detected for oxygen-carbon and resistance life are conveyed to the first conveying unit, and the first conveying unit conveys the materials to the next process for square cutting. The materials that need to be detected for oxygen-carbon and resistance life are conveyed to the second conveying unit to detect the oxygen-carbon and / or resistance life of the corresponding materials, and the materials circulate in the second conveying unit waiting for the detection data of oxygen-carbon and / or resistance life. Since some materials only need to be detected for resistance life, and the time for the resistance life detection result is shorter than the time for the oxygen-carbon detection result, the second conveying unit conveys the materials that only need to be detected for resistance life and have normal resistance life to the transfer conveying device in a predetermined order, and then conveys the materials that need both oxygen-carbon detection and resistance life detection and have normal oxygen-carbon detection and resistance life detection to the transfer conveying device. Since the materials conveyed to the second conveying unit by the transfer conveying device can be in the order of the time length of the detection results, the materials with faster result times are conveyed out first, which can avoid the accumulation of materials in the second conveying unit, and only after some materials are conveyed out, can the materials that need to be detected be allowed to continue to be input into the second conveying unit. According to this rule, the efficient flow of materials is realized, thus improving the work efficiency. Description of the Drawings

[0049] By reading the detailed description of the non-limiting embodiments with reference to the following drawings, other features, purposes and advantages of the present application will become more obvious:

[0050] Figure 1 It is a schematic three-dimensional structure diagram of the material conveying device provided by the embodiment of the present invention;

[0051] Figure 2 Flow chart of the control method for the material conveying device provided by the embodiment of the present invention. Detailed implementation manners

[0052] The present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related invention, rather than limiting the invention. Additionally, it should be noted that for the convenience of description, only the parts related to the invention are shown in the drawings.

[0053] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0054] As Figure 1 shown, the material conveying device provided by the present invention includes:

[0055] A first conveying unit 1, a second conveying unit 3, a transfer conveying device and a control unit;

[0056] The transfer conveying device receives materials, and the control unit is used to control the transfer conveying device to selectively convey the received materials to the first conveying unit 1 or the second conveying unit 3. The transfer conveying device, as a component for material transfer and distribution, can convey the received materials to the first conveying unit 1 or the second conveying unit 3 as needed.

[0057] The control unit is further used to control the second conveying unit to selectively convey the materials received by the second conveying unit 3 to the first conveying unit 1 or the non-conforming product station in a predetermined order, or to circulate the materials within the second conveying unit 3.

[0058] For example but not limited to, the second conveying unit 3 is a circulating conveying unit, so that the materials can be circulated within the second conveying unit 3 and can be output from the second conveying unit 3 as needed. In this example, the materials are circulated within the second conveying unit 3 to wait for the detection of oxygen carbon and / or resistance life; here, the materials can be circular silicon rods, and in the subsequent introduction, the materials can also refer to the trays 14 for placing the circular silicon rods or the combination of the trays 14 with circular silicon rods placed thereon. When the materials conveyed by the second conveying unit 3 are waiting for the detection results, the circulating conveying unit circulates the materials waiting for the detection results, and after obtaining the corresponding detection results, selectively conveys the materials with the detection results to the transfer conveying device or the non-conforming product station in a predetermined order, so that the transfer conveying device conveys the materials to the first conveying unit 1, for the first conveying unit 1 to convey the materials to the next station connected thereto or to convey the non-conforming products to the non-conforming product station for rework or scrap processing, etc.

[0059] In the above solution, according to whether the material needs to be tested for oxygen-carbon and resistance life, the material can be selectively conveyed to the first conveying unit 1 or the second conveying unit 3 through the transfer conveying device. For example, the material that does not need to be tested for oxygen-carbon and resistance life is conveyed to the first conveying unit 1, and the first conveying unit 1 conveys the material to the next working station, such as but not limited to square cutting. The material that needs to be tested for oxygen-carbon and resistance life is conveyed to the second conveying unit 3 to test the corresponding material for oxygen-carbon and / or resistance life. And the material circulates in the second conveying unit 3 waiting for the test data of oxygen-carbon and / or resistance life. Since some materials only need to be tested for resistance life, and the time for obtaining the test result of resistance life is shorter than that of oxygen-carbon, the second conveying unit 3 conveys the materials that only need to be tested for resistance life and have normal resistance life to the transfer conveying device in a predetermined order, and then conveys the materials that need both oxygen-carbon test and resistance life test and are normal in both oxygen-carbon test and resistance life test to the transfer conveying device. Correspondingly, the second conveying unit also conveys the materials that fail in oxygen-carbon and / or resistance life test to the non-conforming product working station. Generally, the non-conforming product working station and the transfer conveying device can be located at both ends of the second conveying unit 3. As Figure 1 shown, the transfer conveying device is located at the left end (i.e., the first end) of the second conveying unit 3, and the non-conforming product working station is located at the right end (i.e., the second end) of the second conveying unit 3. Since the materials conveyed to the second conveying unit 3 by the transfer conveying device can be in the order of the time for obtaining the test results, the materials with faster result time are conveyed out first, which can avoid the accumulation of materials in the second conveying unit 3. And after some materials are conveyed out, only then can the materials that need to be tested be allowed to be input into the second conveying unit 3. According to this rule, the efficient flow of materials is realized, thus improving the work efficiency.

[0060] As an implementable mode, the control unit includes a first material information reading module and a control module:

[0061] The first material information reading module is used to read at least the identification information of the materials conveyed from the loading position to the transfer conveyor device. For example, the first material information reading module is used to read the identification information of the materials conveyed by the following fifth linear sub-conveyor unit 902 to the transfer conveyor device. For example, but not limited to, the transfer conveyor device includes the following first transfer machine 2, that is, the first material information reading module is used to read the identification information of the materials conveyed by the following fifth linear sub-conveyor unit 902 to the first transfer machine 2. The identification information is used to characterize that the material belongs to a certain segmented section of a certain silicon rod among multiple silicon rods in the same furnace; that is to say, the identification information indicates which segmented section of which silicon rod in a furnace the material is. The identification information can be text, letters, numbers or a combination thereof. For example, a total of six silicon rods are drawn in one furnace, each silicon rod is cut into six segments, and the fourth segment of the third silicon rod can be expressed as: 0304, the fourth segment of the third silicon rod, A3B4, etc.; the first material information reading module is, for example, but not limited to, a radio frequency card reader.

[0062] The control module is used to control the transfer conveyor device to selectively convey the materials to the first conveyor unit 1 or the second conveyor unit 3 according to the identification information. Generally, except for the last one among multiple silicon rods in a furnace (the last one can be called the completion segment, and the other ones can be called the circulation segments), the head segments and tail segments of the other silicon rods (circulation segments) are conveyed by the transfer conveyor device to the second conveyor unit 3, and the other segments are conveyed to the first conveyor unit 1; for the last silicon rod, in addition to the head segment and tail segment being conveyed by the transfer conveyor device to the second conveyor unit 3, the second-to-last and third-to-last segments are also conveyed to the second conveyor unit 3, and the other segments are conveyed to the first conveyor unit 1.

[0063] As an implementable manner, the material conveying device further includes:

[0064] The material information writing module is used to write identification information to the materials conveyed from the loading position to the transfer conveyor device. For example, but not limited to, the material information writing module is set at the position of the following seventh linear sub-conveyor unit 401, and the material information writing module is used to write identification information to the materials conveyed by the seventh linear sub-conveyor unit 401. The material information writing module is, for example, but not limited to, a radio frequency writer.

[0065] As an implementable manner, the transfer conveyor device includes the first transfer machine 2 or a grasping manipulator. In this example, the first transfer machine 2 is included for illustration. Correspondingly, the first material information reading module is set at the position of the first transfer machine 2 of the transfer conveyor device.

[0066] Among them, the transfer machine and the grasping manipulator are existing mature technologies, and those skilled in the art are familiar with their specific structures, so they will not be elaborated here.

[0067] As an implementable mode, the control unit further includes a second material information reading module, which is used to read the identification information of the materials conveyed in the second conveying unit; the second material information reading module can be set at the positions of the following third lifting conveyor 7 and / or fourth lifting conveyor 8 to read the representation information of the materials at the corresponding positions. The second material information reading module is, for example but not limited to, a radio frequency card reader.

[0068] The control module is further configured to control the second conveying unit to selectively and in a predetermined order convey the materials received by the second conveying unit to the first conveying unit or the non-conforming product station, or to circulate the materials within the second conveying unit according to the corresponding relationship between the identification information and the detection result. For example, a second material information reading module is provided at the position of the third lifting conveyor 7. When the materials are conveyed to the third lifting conveyor 7 by the following tenth linear sub-conveying unit 302, the identification information of the materials is read, and the corresponding detection result is queried. If the detection result is qualified, the third lifting conveyor 7 conveys the materials to the first transfer machine 2 above. If the detection result is unqualified or no detection result is obtained, the third lifting conveyor 7 conveys the materials to the ninth linear sub-conveying unit 301 above, so that the materials without results continue to be circulated and conveyed within the second conveying unit 3, or the materials held unqualified are conveyed to the fourth lifting conveyor 8 by the ninth linear sub-conveying unit 301, and the fourth lifting conveyor 8 conveys the materials with unqualified detection results to the non-conforming product station.

[0069] As an implementable mode, in order to improve the utilization rate of the plant space, the first conveying unit 1 includes a first linear conveying unit and a second linear conveying unit 17. The conveying directions of the first linear conveying unit and the second linear conveying unit 17 are perpendicular to each other, which can reduce the requirement for the length space of the plant and make full use of the width direction space of the plant; the first linear conveying unit and the second linear conveying unit 17 can convey materials to each other. Of course, in other implementation modes, the conveying directions of the first linear conveying unit and the second linear conveying unit 17 can also be the same or have a certain included angle. The specific arrangement mode of the first linear conveying unit and the second linear conveying unit 17 can be determined according to the space of the plant.

[0070] As an implementable mode, the first linear conveying unit includes a first linear sub-conveying unit 102 and a second linear sub-conveying unit 101 arranged one above the other. For example, the first linear sub-conveying unit 102 is located above the second linear sub-conveying unit 101;

[0071] The second linear conveying unit 17 includes the third linear sub-conveying unit 501 and the fourth linear sub-conveying unit 502 arranged one above the other. For example, the third linear sub-conveying unit 501 is located above the fourth linear sub-conveying unit 502;

[0072] The first transfer machine 2 is located at the first end of the first linear sub-conveyor unit 102 and is used to transfer materials from the first end of the first linear sub-conveyor unit 102 to the first linear sub-conveyor unit 102. Then, the materials are conveyed on the first linear sub-conveyor unit 102 to the next working station, such as the square-cutting working station, etc.

[0073] A second transfer machine is provided at the second end of the first linear sub-conveyor unit 102 or the first end of the third linear sub-conveyor unit 501. The second transfer machine is used to transfer materials between the first linear sub-conveyor unit 102 and the third linear sub-conveyor unit 501. In this example, the conveying directions of the first linear sub-conveyor unit 102 and the third linear sub-conveyor unit 501 are perpendicular to each other. By setting the second transfer machine, the materials conveyed on the first linear sub-conveyor unit 102 can be transferred to the third linear sub-conveyor unit 501.

[0074] In order to enable the materials to be conveyed in a cycle, a first lifting conveyor 10 is provided at the second end of the third linear sub-conveyor unit 501. The first lifting conveyor 10 is used to transfer materials between the third linear sub-conveyor unit 501 and the fourth linear sub-conveyor unit 502. For example, the materials conveyed by the third linear sub-conveyor unit 501 are transferred to the fourth linear sub-conveyor unit 502 through the first lifting conveyor 10.

[0075] It should be noted that the various lifting conveyors involved in this article can be the same. They can all include columns 802. For example, four columns 802 can be used. The four columns 802 can be distributed in a rectangular shape. A roller support 803 is slidably provided on the four columns in the vertical direction. A plurality of rollers 801 are horizontally arranged side by side on the roller support 803. Among them, a travel switch or a position sensor can also be provided on the roller support 803. When the materials are transferred onto the lifting conveyor and trigger the travel switch or the position sensor, the lifting conveyor rises or falls.

[0076] A third transfer machine is provided at the first end of the fourth linear sub-conveyor unit 502 or the second end of the second linear sub-conveyor unit 101. The third transfer machine is used to transfer materials between the fourth linear sub-conveyor unit 502 and the second linear sub-conveyor unit 101. In this example, the conveying directions of the fourth linear sub-conveyor unit 502 and the second linear sub-conveyor unit 101 are perpendicular to each other. By setting the third transfer machine, the materials conveyed on the fourth linear sub-conveyor unit 502 can be transferred to the second linear sub-conveyor unit 101.

[0077] Among them, the first linear sub-conveyor unit 102, the second linear sub-conveyor unit 101, the third linear sub-conveyor unit 501, and the fourth linear sub-conveyor unit 502 can be roller conveyors and / or double-speed chain conveyors. In this example, the first linear sub-conveyor unit 102 and the second linear sub-conveyor unit 101 are selected as double-speed chain conveyors, and the third linear sub-conveyor unit 501 and the fourth linear sub-conveyor unit 502 are selected as roller conveyors.

[0078] As an implementable manner, a fifth lifting conveyor (not shown in the figure) can also be provided between the first transfer machine 2 and the first end of the first linear sub-conveyor unit 102. The fifth lifting conveyor is at least used for material transfer between the first linear sub-conveyor unit 102 and the second linear sub-conveyor unit 101. By providing the fifth lifting conveyor and the first lifting conveyor 10, the first linear sub-conveyor unit 102, the second linear sub-conveyor unit 101, the third linear sub-conveyor unit 501, and the fourth linear sub-conveyor unit 502 can form a circulating conveyor path. For example, materials can be transferred from the first linear sub-conveyor unit 102 to the third linear sub-conveyor unit 501 through the second transfer machine, transferred from the third linear sub-conveyor unit 501 to the fourth linear sub-conveyor unit 502 through the first lifting conveyor 10, then transferred from the fourth linear sub-conveyor unit 502 to the second linear sub-conveyor unit 101 through the third transfer machine, and finally transferred from the second linear sub-conveyor unit 101 to the first linear sub-conveyor unit 102 through the fifth lifting conveyor, forming a circulating conveyor of materials. Through the circulating conveyor of materials, the materials can flow smoothly, avoiding the accumulation of materials on each conveyor unit and improving production efficiency.

[0079] As an implementable manner, the material conveying device further includes:

[0080] A third conveyor unit 24, the third conveyor unit 24 includes a fifth linear sub-conveyor unit 902 and a sixth linear sub-conveyor unit 901 arranged one above the other. For example, the fifth linear sub-conveyor unit 902 is located above the sixth linear sub-conveyor unit 901; both the fifth linear sub-conveyor unit 902 and the sixth linear sub-conveyor unit 901 are selected as roller conveyors. Of course, in other examples, double-speed chain conveyors can also be used.

[0081] The fifth linear sub-conveyor unit 902 is used for conveying materials to the first transfer machine 2;

[0082] A fourth transfer machine is provided below the first transfer machine 2. The fourth transfer machine is used for material transfer between the sixth linear sub-conveyor unit 901 and the second linear sub-conveyor unit 101. For example, the fourth transfer machine is used for transferring the materials conveyed by the second linear sub-conveyor unit 101 to the sixth linear sub-conveyor unit 901.

[0083] As an implementable mode, a sixth lifting conveyor (not shown in the figure) is provided at one end of the fifth linear sub-conveyor unit 902 away from the first transfer machine 2. The sixth lifting conveyor is at least used for conveying materials between the fifth linear sub-conveyor unit and the sixth linear sub-conveyor unit. Based on the above-mentioned first lifting conveyor, fifth lifting conveyor and the sixth lifting conveyor here, three circular conveying paths can be formed among the first linear sub-conveyor unit 102, the second linear sub-conveyor unit 101, the third linear sub-conveyor unit 501, the fourth linear sub-conveyor unit 502, the fifth linear sub-conveyor unit 902 and the sixth linear sub-conveyor unit 901, that is, a circular conveying path is formed among the first linear sub-conveyor unit 102, the second linear sub-conveyor unit 101, the third linear sub-conveyor unit 501 and the fourth linear sub-conveyor unit 502; a circular conveying path is formed between the fifth linear sub-conveyor unit 902 and the sixth linear sub-conveyor unit 901; and a circular conveying path is formed among the first linear sub-conveyor unit 102, the second linear sub-conveyor unit 101, the third linear sub-conveyor unit 501, the fourth linear sub-conveyor unit 502, the fifth linear sub-conveyor unit 902 and the sixth linear sub-conveyor unit 901. For example, when a circular conveying path is formed between the fifth linear sub-conveyor unit 902 and the sixth linear sub-conveyor unit 901; and a circular conveying path is formed among the first linear sub-conveyor unit 102, the second linear sub-conveyor unit 101, the third linear sub-conveyor unit 501, the fourth linear sub-conveyor unit 502, the fifth linear sub-conveyor unit 902 and the sixth linear sub-conveyor unit 901, the material can be conveyed from the first linear sub-conveyor unit 102 to the third linear sub-conveyor unit 501 through the second transfer machine, conveyed from the third linear sub-conveyor unit 501 to the fourth linear sub-conveyor unit 502 through the first lifting conveyor 10, then conveyed from the fourth linear sub-conveyor unit 502 to the second linear sub-conveyor unit 101 through the third transfer machine, and then conveyed from the second linear sub-conveyor unit 101 to the sixth linear sub-conveyor unit 901 successively through the fifth lifting conveyor and the fourth transfer machine, conveyed from the sixth linear sub-conveyor unit 901 to the fifth linear sub-conveyor unit 902 through the sixth lifting conveyor, and finally conveyed from the fifth linear sub-conveyor unit 902 to the first linear sub-conveyor unit 102 successively through the first transfer machine 2 and the fifth lifting conveyor to form a circular conveying of materials. Through the circular conveying of materials, the materials can be smoothly circulated, avoiding the accumulation of materials on each conveying unit and improving the production efficiency. In addition, the tray carrying the materials can be transferred to the position of material loading.

[0084] As an implementable mode, the material conveying device further includes:

[0085] At least one fourth conveying unit 4, the conveying direction of the fourth conveying unit 4 is perpendicular to the conveying direction of the third conveying unit 24, and the fourth conveying unit 4 includes a seventh linear sub-conveying unit 401 and an eighth linear sub-conveying unit 402 arranged one above the other; for example, the seventh linear sub-conveying unit 401 is located above the eighth linear sub-conveying unit 402. In this example, two fourth conveying units 4 are provided, and the two fourth conveying units 4 are located on both sides of the third conveying unit 24, and the conveying directions of the two fourth conveying units 4 are on the same straight line.

[0086] A fifth transfer machine is provided at the first end of the seventh linear sub-conveying unit 401 or the second end of the fifth linear sub-conveying unit 902, and the fifth transfer machine is used for material transfer between the seventh linear sub-conveying unit 401 and the fifth linear sub-conveying unit 902; for example, the fifth transfer machine is used to transfer the material conveyed by the seventh linear sub-conveying unit 401 to the fifth linear sub-conveying unit 902.

[0087] A second lifting conveyor 6 is provided at the second end of the seventh linear sub-conveying unit 401, and the second lifting conveyor 6 is used for material transfer between the seventh linear sub-conveying unit 401 and the eighth linear sub-conveying unit 402; for example, the second lifting conveyor 6 is used to transfer the material conveyed by the eighth linear sub-conveying unit 402 to the seventh linear sub-conveying unit 401. Among them, the seventh linear sub-conveying unit 401 can be used as a loading station, and accordingly, a material information writing module can be provided at the seventh linear sub-conveying unit 401.

[0088] A sixth transfer machine is provided at the first end of the eighth linear sub-conveying unit 402 or the second end of the sixth linear sub-conveying unit 901, and the sixth transfer machine is used for material transfer between the eighth linear sub-conveying unit 402 and the sixth linear sub-conveying unit 901. For example, the sixth transfer machine is used to transfer the material conveyed by the sixth linear sub-conveying unit 901 to the eighth linear sub-conveying unit 402. Both the seventh linear sub-conveying unit 401 and the eighth linear sub-conveying unit 402 are selected as double-speed chain conveyors. Of course, in other examples, roller conveyors can also be used.

[0089] As an implementable mode, the second conveying unit 3 includes a ninth linear sub-conveying unit 301 and a tenth linear sub-conveying unit 302 arranged one above the other; for example, the ninth linear sub-conveying unit 301 is located above the tenth linear sub-conveying unit 302, and both the ninth linear sub-conveying unit 301 and the tenth linear sub-conveying unit 302 are selected as double-speed chain conveyors. Of course, in other examples, roller conveyors can also be used.

[0090] A third lifting conveyor 7 and a fourth lifting conveyor 8 are respectively arranged at the first end and the second end of the ninth linear sub-conveying unit 301. The third lifting conveyor 7 and the fourth lifting conveyor 8 respectively convey materials between the ninth linear sub-conveying unit 301 and the tenth linear sub-conveying unit 302.

[0091] The working process and effect of the material conveying device will be described in detail below with a kind of technological process.

[0092] After the ingot is cut into multiple sections of round silicon rods, it is loaded onto the seventh linear sub-conveying unit 401 to transport the round silicon rods to subsequent workstations for squaring. Among them, a tray 14 is placed on the seventh linear sub-conveying unit 401, and the original silicon rod can be placed on the tray 14 for transportation. There is a radio frequency chip on the tray 14, and the identification information of the round silicon rod placed on the tray 14 is written into the radio frequency chip through a radio frequency writer. The seventh linear sub-conveying unit 401 conveys the round silicon rod on the tray 14 to the fifth linear sub-conveying unit 902 via the fifth transfer machine. The fifth linear sub-conveying unit 902 conveys the material to the first transfer machine 2. The radio frequency card reader located at the position of the first transfer machine 2 reads the identification information. If the identification information represents the first or last section of the loop section, the first section of the completion section, the last section, the second-to-last section or the third-to-last section, it will be transmitted to the ninth linear sub-conveying unit 301, otherwise it will be transmitted to the first linear sub-conveying unit 102.

[0093] Among them, the ninth linear sub-conveyor unit 301 corresponds to the oxygen-carbon and resistance life detection. According to the actual space of the workshop, the first linear sub-conveyor unit 102 and / or the third linear sub-conveyor unit 501 can be selectively corresponding to the slicing station. The materials conveyed to the ninth linear sub-conveyor unit 301 are correspondingly subjected to oxygen-carbon and / or resistance life detection, and circulate among the ninth linear sub-conveyor unit 301, the fourth lifting conveyor 8, the tenth linear sub-conveyor unit 302 and the third lifting conveyor 7 to wait for the detection results. Among them, the qualified ones are conveyed to the first linear sub-conveyor unit 102 through the first transfer machine 2 in sequence, and the unqualified ones are output from the fourth lifting conveyor 8. Since only the resistance life needs to be detected for the head and tail sections of the circulation section, and the time for the resistance life to obtain the detection result is shorter than the time for the oxygen-carbon to obtain the detection result, the ninth linear sub-conveyor unit 301 first conveys the head and tail sections of the qualified circulation section to the first transfer machine 2, while the head section, tail section, second-to-last section or third-to-last section of the completion section continue to circulate in the second conveyor unit 3 to wait for the oxygen-carbon detection result, and are then conveyed to the first transfer machine 2 when the oxygen-carbon detection and the resistance life detection are both normal for the head section, tail section, second-to-last section or third-to-last section of the completion section. Since the materials conveyed to the second conveyor unit 3 by the first transfer machine 2 can be in the order of the time lengths of their detection results, the ones with faster result times are preferentially conveyed out, which can avoid the accumulation of materials in the second conveyor unit 3. And after there are materials conveyed out, only then can new materials to be detected be allowed to be input into the second conveyor unit 3. According to this rule, the efficient flow of materials is realized, thus improving the work efficiency.

[0094] Correspondingly, the circular silicon rods transported to the first linear sub-conveyor unit 102 and / or the third linear sub-conveyor unit 501 are moved by a manipulator to a diamond wire slicing machine for slicing operations, while the tray 14 passes through the second transfer machine, the third linear sub-conveyor unit 501, the first lifting conveyor 10, the fourth linear sub-conveyor unit 502, the third transfer machine, the second linear sub-conveyor unit 101, the fourth transfer machine, the sixth linear sub-conveyor unit 901, the sixth transfer machine, the eighth linear sub-conveyor unit 402, the second lifting conveyor 6 in sequence to return to the seventh linear sub-conveyor unit 401 for loading the next circular silicon rod.

[0095] In a second aspect, as Figure 2 shown, the present invention provides a control method for the above-mentioned material conveying device, including the following steps:

[0096] S1: Obtain the identification information of the materials received by the transfer device, and the identification information is used to characterize that the materials belong to a certain segmented section of a certain silicon rod among multiple silicon rods in the same furnace;

[0097] For example but not limited to, a first material information reading module is provided at the position of the transfer device or on the path for conveying materials to the transfer device. The first material information reading module is used to read the identification information of the materials conveyed from the loading position to the transfer device. For example, for the materials conveyed from the fifth linear sub-conveying unit 902 to the transfer device, the identification information of the materials is read through the first material information reading module. The identification information is used to characterize which fractional segment of which silicon rod in a furnace the material is. The identification information can be text, letters, numbers or a combination thereof. For example, if six silicon rods are drawn in a furnace and each silicon rod is cut into six segments, the fourth segment of the third silicon rod can be expressed as: 0304, the fourth segment of the third silicon rod, A3B4, etc.; the first material information reading module is, for example but not limited to, a radio frequency card reader.

[0098] S2: According to the mapping relationship between the identification information and the transfer direction, control the transfer device to selectively transfer the materials to the first conveying unit or the second conveying unit;

[0099] Generally, for multiple silicon rods in a furnace except the last one (the last one can be called the completion segment, and the other ones can be called the circulation segments), the head segments and tail segments of each of the other silicon rods (circulation segments) are transferred by the transfer device to the second conveying unit 3, and the other segments are conveyed to the first conveying unit 1; for the last silicon rod, in addition to the head segment and tail segment being transferred by the transfer device to the second conveying unit 3, the second-to-last and third-to-last segments are also transferred to the second conveying unit 3, and the other segments are conveyed to the first conveying unit 1. Then the mapping relationship between the identification information and the transfer direction can be expressed as: the head segments and tail segments of the circulation segments are transferred in the direction of the second conveying unit 3, and the other segments are transferred in the direction of the first conveying unit; the head segment, tail segment, second-to-last and third-to-last segments of the completion segment are transferred in the direction of the second conveying unit 3, and the other segments are transferred in the direction of the first conveying unit 1.

[0100] S3: Control the second conveying unit to selectively and sequentially transfer the received materials to the first conveying unit or the non-conforming product station, or circulate and transfer within the second conveying unit;

[0101] The second conveying unit 3 may include a ninth linear sub-conveying unit 301 and a tenth linear sub-conveying unit 302 arranged vertically. The materials conveyed from the first transfer machine 2, which serves as a transfer device, to the second conveying unit 3 first reach the ninth linear sub-conveying unit 301. The materials conveyed to the ninth linear sub-conveying unit 301 are correspondingly subjected to oxygen-carbon and / or resistance life detection, and circulate among the ninth linear sub-conveying unit 301, the fourth lifting conveyor 8, the tenth linear sub-conveying unit 302, and the third lifting conveyor 7 to wait for the detection results. Among them, the qualified ones are conveyed to the first linear sub-conveying unit 102 through the first transfer machine 2 in sequence, and the unqualified ones are output from the fourth lifting conveyor 8 to the unqualified product station. Since only the resistance life needs to be detected at the head and tail sections of the circulation section, and the time for obtaining the detection result of the resistance life is shorter than that of the oxygen-carbon, the ninth linear sub-conveying unit 301 first conveys the head and tail sections of the qualified circulation section to the first transfer machine 2, while the head section, tail section, second-to-last section, or third-to-last section of the completion section continues to circulate in the second conveying unit 3 to wait for the oxygen-carbon detection result, and then the head section, tail section, second-to-last section, or third-to-last section of the completion section with normal oxygen-carbon detection and resistance life detection is conveyed to the first transfer machine 2. Since the materials conveyed from the first transfer machine 2 to the second conveying unit 3 can be prioritized for conveying out according to the order of the time for obtaining their detection results, with the ones with faster result times being conveyed out first, this can avoid the accumulation of materials in the second conveying unit 3. And after some materials are conveyed out, only then can new materials to be detected be allowed to be input into the second conveying unit 3. According to this rule, the efficient flow of materials is realized, thus improving the work efficiency.

[0102] S4: Control the first conveying unit 1 to convey the received materials to the next station. The next station can be the square-cutting station in this example. Of course, in other examples, it can also be other stations.

[0103] As an implementable manner, when the first conveying unit includes a first linear sub-conveying unit, a second linear sub-conveying unit, a third linear sub-conveying unit, a fourth linear sub-conveying unit, a first lifting conveyor, and a fifth upgrading conveyor

[0104] Control the materials conveyed to the first conveying unit 1 to circulate and be conveyed among the first linear sub-conveying unit 102, the second linear sub-conveying unit 101, the third linear sub-conveying unit 501, the fourth linear sub-conveying unit 502, the first lifting conveyor 10, and the fifth upgrading conveyor (not shown in the figure).

[0105] By setting the fifth lifting conveyor and the first lifting conveyor 10, the first linear sub-conveyor unit 102, the second linear sub-conveyor unit 101, the third linear sub-conveyor unit 501, and the fourth linear sub-conveyor unit 502 can form a circulating conveying path. For example, materials can be conveyed from the first linear sub-conveyor unit 102 to the third linear sub-conveyor unit 501 through the second transfer machine, from the third linear sub-conveyor unit 501 to the fourth linear sub-conveyor unit 502 through the first lifting conveyor 10, then from the fourth linear sub-conveyor unit 502 to the second linear sub-conveyor unit 101 through the third transfer machine, and finally from the second linear sub-conveyor unit 101 to the first linear sub-conveyor unit 102 through the fifth lifting conveyor, forming a circulating conveyance of materials. Through the circulating conveyance of materials, the materials can flow smoothly, avoiding the accumulation of materials on each conveying unit and improving production efficiency.

[0106] It should be understood that for the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. in the above text, it is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0107] The above description is only the preferred embodiment of the present application and the explanation of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by the specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the technical solutions formed by mutually replacing the above features with the (but not limited to) technical features having similar functions disclosed in the present application.

Claims

1. A material conveying device, characterized in that, Comprising: A first conveying unit, a second conveying unit, a transfer conveying device and a control unit; The transfer conveying device receives materials and selectively conveys the received materials to the first conveying unit or the second conveying unit; The second conveying unit selectively and in a predetermined order conveys the materials received by the second conveying unit to the first conveying unit or a non-conforming product station, or circulates and conveys within the second conveying unit, and performs a first inspection and / or a second inspection on the materials on the second conveying unit; The first conveying unit is connected to the next station and is used to convey the materials received by the first conveying unit to the next station, The control unit is used to control the transfer conveying device to selectively convey the received materials to the first conveying unit or the second conveying unit; the control unit is also used to control the second conveying unit to selectively and in a predetermined order convey the materials received by the second conveying unit to the first conveying unit or a non-conforming product station, or circulate and convey within the second conveying unit; The control unit includes a first material information reading module, a second material information reading module and a control module: the first material information reading module is used to at least read the identification information of the materials conveyed from the loading position to the transfer conveying device, and the identification information is used to characterize that the materials belong to a certain segment of a certain silicon rod among multiple silicon rods in the same furnace; the control module is used to control the transfer conveying device to selectively convey the materials to the first conveying unit or the second conveying unit according to the identification information; the second material information reading module is used to read the identification information of the materials conveyed within the second conveying unit; the control module is also used to control the second conveying unit to selectively and in a predetermined order convey the materials received by the second conveying unit to the first conveying unit or a non-conforming product station, or circulate and convey within the second conveying unit according to the corresponding relationship between the identification information and the inspection result.

2. The material conveying device according to claim 1, characterized in that, Further comprising: A material information writing module, and the material information writing module is used to write identification information to the materials conveyed from the loading position to the transfer conveying device.

3. The material conveying device according to claim 2, characterized in that, The transfer conveying device includes a first transfer machine or a grasping manipulator.

4. The material conveying device according to claim 3, characterized in that, The first material information reading module is arranged at the position of the transfer conveying device.

5. The material conveying device according to claim 1, characterized in that, The first conveying unit includes a first linear conveying unit and a second linear conveying unit, and the conveying directions of the first linear conveying unit and the second linear conveying unit are perpendicular to each other; the first linear conveying unit and the second linear conveying unit can convey materials to each other.

6. The material conveying device according to claim 5, wherein The first linear conveying unit includes a first linear sub-conveying unit and a second linear sub-conveying unit arranged one above the other; The second linear conveying unit includes a third linear sub-conveying unit and a fourth linear sub-conveying unit arranged one above the other; The transfer conveying device is located at the first end of the first linear sub-conveying unit; A second transfer machine is provided at the second end of the first linear sub-conveyor unit or the first end of the third linear sub-conveyor unit, and the second transfer machine is used for transferring materials between the first linear sub-conveyor unit and the third linear sub-conveyor unit; A first lifting conveyor is provided at the second end of the third linear sub-conveyor unit, and the first lifting conveyor is used for transferring materials between the third linear sub-conveyor unit and the fourth linear sub-conveyor unit; A third transfer machine is provided at the first end of the fourth linear sub-conveyor unit or the second end of the second linear sub-conveyor unit, and the third transfer machine is used for transferring materials between the fourth linear sub-conveyor unit and the second linear sub-conveyor unit.

7. The material conveying device according to claim 6, wherein, A fifth lifting conveyor is provided between the transfer device and the first end of the first linear sub-conveyor unit, and the fifth lifting conveyor is at least used for transferring materials between the first linear sub-conveyor unit and the second linear sub-conveyor unit.

8. The material conveying device according to claim 6, wherein It further includes: A third conveyor unit, the third conveyor unit includes a fifth linear sub-conveyor unit and a sixth linear sub-conveyor unit arranged one above the other; The fifth linear sub-conveyor unit is used for conveying materials to the transfer device; A fourth transfer machine is provided below the transfer device, and the fourth transfer machine is used for transferring materials between the sixth linear sub-conveyor unit and the second linear sub-conveyor unit.

9. The material conveying device according to claim 8, characterized in that, A sixth lifting conveyor is provided at one end of the fifth linear sub-conveyor unit away from the transfer device, and the sixth lifting conveyor is at least used for transferring materials between the fifth linear sub-conveyor unit and the sixth linear sub-conveyor unit.

10. The material conveying device according to claim 9, characterized in that, It further includes: At least one fourth conveyor unit, the transmission direction of the fourth conveyor unit is perpendicular to the transmission direction of the third conveyor unit, and the fourth conveyor unit includes a seventh linear sub-conveyor unit and an eighth linear sub-conveyor unit arranged one above the other; A fifth transfer machine is provided at the first end of the seventh linear sub-conveyor unit or the second end of the fifth linear sub-conveyor unit, and the fifth transfer machine is used for transferring materials between the seventh linear sub-conveyor unit and the fifth linear sub-conveyor unit; A second lifting conveyor is provided at the second end of the seventh linear sub-conveyor unit, and the second lifting conveyor is used for transferring materials between the seventh linear sub-conveyor unit and the eighth linear sub-conveyor unit; A sixth transfer machine is provided at the first end of the eighth linear sub-conveyor unit or the second end of the sixth linear sub-conveyor unit, and the sixth transfer machine is used for transferring materials between the eighth linear sub-conveyor unit and the sixth linear sub-conveyor unit.

11. The material conveying device according to claim 10, characterized in that, A material information writing module is provided at the seventh linear sub-conveyor unit.

12. The material conveying device according to claim 10, characterized in that, The second conveyor unit includes a ninth linear sub-conveyor unit and a tenth linear sub-conveyor unit arranged one above the other; A third lifting conveyor and a fourth lifting conveyor are respectively provided at the first end and the second end of the ninth linear sub-conveyor unit, and the third lifting conveyor and the fourth lifting conveyor are respectively used for transferring materials between the ninth linear sub-conveyor unit and the tenth linear sub-conveyor unit.

13. The material conveying device according to claim 12, characterized in that, The first linear sub-conveyor unit, the second linear sub-conveyor unit, the third linear sub-conveyor unit, the fourth linear sub-conveyor unit, the fifth linear sub-conveyor unit, the sixth linear sub-conveyor unit, the seventh linear sub-conveyor unit, the eighth linear sub-conveyor unit, the ninth linear sub-conveyor unit and the tenth linear sub-conveyor unit are roller conveyors and / or double-speed chain conveyors.

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