Spool dividing equipment and spool dividing method

By designing an I-beam reel separator and adopting an automated material distribution mechanism and transportation system, the problems of low efficiency and incorrect proportioning of manual reel separators have been solved, achieving efficient and accurate I-beam reel separator operations.

CN120964375APending Publication Date: 2025-11-18SUZHOU SHENGDA ZHAOYING INTELLIGENT TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202511346978.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-09-19
Publication Date
2025-11-18

AI Technical Summary

Technical Problem

In the existing technology, the distribution operation of the H-beam reel mainly relies on manual operation, which leads to high labor intensity, low efficiency, and easy to cause mixing errors.

Method used

An I-beam wheel sorting device was designed, including a loading platform, a sorting platform, a transport system, and a sorting mechanism. The device automatically and accurately places the I-beam wheels into the loading area of ​​the sorting pallet to ensure that the sorting is carried out according to the preset ratio.

Benefits of technology

It has achieved automated tray splitting operation, which has significantly reduced labor intensity, improved tray splitting efficiency, and ensured the accuracy and reliability of tray splitting, thus avoiding the occurrence of mixing errors.

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Abstract

The invention belongs to the technical field of spool distribution, and discloses spool disc dividing equipment and a spool disc dividing method. According to the material distribution mechanism, the material distribution tray is divided into the carrying areas, the number of the placing positions in the carrying areas and the arrangement mode of all the placing positions in the carrying areas are adaptively set according to the matching requirement, and therefore the purpose that the spools can be accurately placed in the carrying areas of the material distribution tray through the material distribution mechanism is achieved. Compared with manual tray separation, the automatic tray separation device has the advantages that automatic tray separation operation can be realized, so that the labor intensity is greatly reduced, the tray separation efficiency is remarkably improved, and the overall production efficiency is effectively improved. And meanwhile, the placement positions in the carrying areas of the material distribution trays are accurately designed and arranged according to the preset proportion, so that the material distribution mechanism can be operated strictly according to the preset requirements when placing the spools, the occurrence of proportion errors is greatly reduced, and the accuracy and the reliability of the tray distribution operation are further ensured.
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Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of spool distribution, and in particular to a spool dividing device and a spool dividing method. BACKGROUND

[0002] In the manufacturing field of electric wires and cables, metal wires, etc., spools are the main bearing tools for cable and steel wire materials in roll shape, and the spool dividing operation is a key link in the production process. Specifically, the spool dividing operation needs to divide a plurality of spools distributed by an upstream work station to a plurality of material dividing trays according to the processing, storage and transportation requirements of a downstream work station, and the spools carried by each material dividing tray need to meet the preset ratio.

[0003] In the prior art, the spool dividing operation is generally completed by manual work, specifically, the workers need to manually carry the spools and place them on the material dividing trays according to the ratio requirements. However, manual work has high labor intensity and low efficiency, which leads to low production efficiency, and manual operation is prone to ratio errors. SUMMARY

[0004] The present application aims to provide a spool dividing device and a spool dividing method to solve the problem of high labor intensity and low efficiency of manual work, which leads to low production efficiency, and manual operation is prone to ratio errors.

[0005] To achieve this purpose, the present application adopts the following technical solutions:

[0006] In one aspect, the present application provides a spool dividing device, comprising:

[0007] a feeding table configured to receive a feeding tray, and a dividing table configured to receive a dividing tray, the dividing tray being divided into a loading and placing area, a preset number of placing positions being provided in the loading and placing area, and all the placing positions being arranged in a preset manner;

[0008] a transportation system configured to transfer the feeding tray loaded with a plurality of stacks of spools to the feeding table, and to pick up the empty feeding tray from the feeding table, and further configured to transfer the empty dividing tray to the dividing table, and to pick up the full dividing tray from the dividing table;

[0009] a material dividing mechanism configured to pick up the spools from the feeding tray and place the spools into the placing positions.

[0010] Preferably, the outer periphery of the material dividing mechanism is provided with two or more dividing tables.

[0011] Preferably, the dividing tray is divided into two or more loading and placing areas.

[0012] As preferred, the transport system comprises a first transport vehicle configured to move the feeding tray and a second transport vehicle configured to move the dispensing tray.

[0013] As preferred, the feeding table is provided with a first accommodating groove, one side of the first accommodating groove is formed as a first opening, and the first transport vehicle puts the feeding tray into the first accommodating groove through the first opening.

[0014] The dispensing table is provided with a second accommodating groove, one side of the second accommodating groove is formed as a second opening, and the second transport vehicle puts the dispensing tray into the second accommodating groove through the second opening.

[0015] As preferred, the feeding table and the dispensing table are provided with fences around the periphery.

[0016] As preferred, the dispensing mechanism comprises a mechanical hand configured to drive a gripper to move, and the gripper is configured to clamp the spool.

[0017] As preferred, the dispensing tray is provided with a pin, and all the placement positions are provided with the pin correspondingly, and the dispensing mechanism can wrap the spool around the periphery of the pin.

[0018] Another aspect of the present application also provides a spool dispensing method applied to the spool dispensing device as described above, and the spool dispensing method comprises:

[0019] The dispensing mechanism takes the spool from the feeding tray and places the spool at the placement position of the dispensing tray.

[0020] After the feeding tray on the feeding table is empty, the transport system replaces the feeding tray.

[0021] After the dispensing tray on the dispensing table is full, the transport system replaces the dispensing tray.

[0022] As preferred, the dispensing mechanism places the spool at all the placement positions of the dispensing tray one by one, so as to place a layer of spools on the dispensing tray.

[0023] The dispensing tray stacks the spools on the dispensing tray layer by layer until the dispensing tray loads a preset number of layers of spools.

[0024] The present application has the following advantages:

[0025] This invention utilizes a material distribution pallet divided into loading areas, with the number and arrangement of placement positions within each area tailored to specific mixing ratios. This allows for the precise placement of I-beams into the loading areas of the pallet via a material distribution mechanism. Compared to manual pallet distribution, this invention automates the process, significantly reducing labor intensity and improving efficiency, thereby enhancing overall production productivity. Furthermore, because the placement positions within the pallet's loading areas are precisely designed and arranged according to a preset ratio, the material distribution mechanism operates strictly according to these requirements when placing the I-beams, greatly reducing mixing errors and ensuring the accuracy and reliability of the pallet distribution process. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the I-beam wheel separator in an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the structure of the I-beam wheel separator after removing the fence in an embodiment of the present invention;

[0028] Figure 3 This is a top view of the I-beam wheel separator device after the fence has been removed in an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the structure of the loading platform and loading tray in an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the dispensing table and the material dispensing tray fully loaded with I-beam wheels in an embodiment of the present invention;

[0031] Figure 6 This is a schematic diagram of the dispensing table and the empty material dispensing tray in an embodiment of the present invention;

[0032] Figure 7 This is a schematic diagram of the dispensing stage in an embodiment of the present invention.

[0033] In the picture:

[0034] 100. H-beam wheel;

[0035] 1. Loading platform; 11. First receiving groove; 111. First opening; 112. First groove section; 113. Second groove section;

[0036] 2. Dispensing platform; 21. Second receiving slot; 211. Second opening; 212. Third slot; 213. Fourth slot;

[0037] 3. Loading pallet; 4. Distributing pallet; 41. Loading area; 411. Placement position; 42. Pin;

[0038] 51. First transport vehicle; 511. Forklift;

[0039] 6. Material sorting mechanism; 61. Robotic arm; 62. Gripper;

[0040] 7. Fence; 71. First entrance / exit; 72. Second entrance / exit. Detailed Implementation

[0041] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0042] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0043] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0045] Please see Figures 1 to 7This embodiment provides a bobbin wheel sorting device, which includes a loading platform 1, a sorting platform 2, and a sorting mechanism 6. The loading platform 1 is configured to receive a loading tray 3, the sorting platform 2 is configured to receive a sorting tray 4, the sorting tray 4 is divided into a loading area 41, and a preset number of placement positions 411 are provided in the loading area 41. All placement positions 411 are arranged in a preset manner. The sorting mechanism 6 is configured to pick up the bobbin wheel 100 from the loading tray 3 and place the bobbin wheel 100 into the placement position 411.

[0046] Therefore, in this embodiment, a loading area 41 is provided on the material distribution pallet 4. The loading area 41 is provided with a corresponding number of placement positions 411 according to a preset ratio, and the positions of all placement positions 411 are arranged so that the material distribution mechanism 6 can transfer the I-beams 100 to the material distribution pallet 4 according to the preset ratio. This ensures that when the material distribution pallet 4 flows to the downstream workstation, the I-beams 100 on the material distribution pallet 4 meet the preset ratio, thereby meeting the processing, storage and transportation needs of the downstream workstation.

[0047] Specifically, in this embodiment, the packaged I-beam wheels 100 need to meet the ratio of 6 stacks per group, with the 6 stacks arranged in a circle. To achieve this ratio, this embodiment designs the distribution tray 4, specifically dividing the distribution tray 4 into a loading area 41, with 6 placement positions 411 arranged in a circle. Thus, the distribution mechanism 6 can adaptably place the I-beam wheels 100 according to the specific design of the distribution tray 4, thereby ensuring that the I-beam wheels 100 packaged on the distribution tray 4 meet the preset ratio requirements.

[0048] Furthermore, the I-beam wheel sorting equipment also includes a transport system, which is configured to transfer a loading pallet 3 carrying several stacks of I-beam wheels 100 to the loading platform 1, and to remove an empty loading pallet 3 from the loading platform 1. In addition, the transport system is also configured to transfer an empty sorting pallet 4 to the sorting platform 2, and to remove a fully loaded sorting pallet 4 from the sorting platform 2.

[0049] That is, in this embodiment, the transportation system can first move the fully loaded loading pallet 3 to the loading platform 1 and the empty sorting pallet 4 to the sorting platform 2. The sorting mechanism 6 accurately places the I-beam 100 on the corresponding placement position 411 according to the specific arrangement of the placement positions 411 in the loading area 41 on the sorting pallet 4. After the sorting pallet 4 is fully loaded, the transportation system replaces the sorting pallet 4, and the fully loaded sorting pallet 4 is sent to the downstream station. In addition, when the loading pallet 3 is empty, the transportation system can replace the loading pallet 3, so that the sorting mechanism 6 can continuously perform the sorting operation of the I-beam 100.

[0050] Therefore, this embodiment can ensure that the downstream workstations receive I-beams 100 in a preset ratio of 6 stacks per group, with each group arranged in a circle, thus fully meeting the various processing, storage and transportation needs of the downstream workstations.

[0051] Therefore, this embodiment also provides a method for dividing a plate using an H-beam wheel. This method is applied to the H-beam wheel dividing equipment described above. The method includes:

[0052] The material distribution mechanism 6 picks up the I-beam 100 from the feeding pallet 3 and places the I-beam 100 at the placement position 411 of the material distribution pallet 4;

[0053] Once the loading pallet 3 on loading platform 1 is empty, the transportation system replaces loading pallet 3.

[0054] Once the material distribution pallet 4 on the dispensing station 2 is full, the transportation system replaces the material distribution pallet 4.

[0055] Based on the above description, this embodiment divides the material distribution tray 4 into a loading area 41, and adaptively sets the number of placement positions 411 within the loading area 41 and the arrangement of all placement positions 411 within the loading area 41 according to the mixing ratio requirements. This allows the material distribution mechanism 6 to accurately place the H-beams 100 into the loading area 41 of the material distribution tray 4. Compared to manual tray distribution, this embodiment achieves automated tray distribution, which not only greatly reduces labor intensity but also significantly improves tray distribution efficiency, thereby effectively improving overall production efficiency. Furthermore, because the placement positions 411 within the loading area 41 of the material distribution tray 4 are precisely designed and arranged according to a preset mixing ratio, the material distribution mechanism 6 can operate strictly according to the preset requirements when placing the H-beams 100, thereby greatly reducing the occurrence of mixing ratio errors and ensuring the accuracy and reliability of the tray distribution operation.

[0056] In addition, it is worth noting that in this embodiment, six dispensing platforms 2 are provided on the outer periphery of the dispensing mechanism 6. Specifically, based on the working rhythm of the transportation system, three dispensing platforms 2 are arranged on both sides of the dispensing mechanism 6. This allows the dispensing mechanism 6 to immediately dispense the dispensing pallets 4 on other dispensing platforms 2 to the I-beams 100 when the transportation system changes the dispensing pallets 4, thereby realizing the non-stop operation of the dispensing mechanism 6, further improving the dispensing efficiency, and further improving the overall production efficiency.

[0057] Of course, in other optional embodiments, two, three or four other numbers of dispensing stations 2 may also be arranged around the outer periphery of the dispensing mechanism 6. This embodiment does not impose specific limitations on this.

[0058] Furthermore, the material distribution pallet 4 is divided into two loading areas 41, thereby enabling the material distribution mechanism 6 to load two sets of I-beams 100 onto the material distribution pallet 4 at one time, thus further improving the efficiency of the material distribution operation.

[0059] Of course, in other alternative embodiments, the material distribution tray 4 may also be divided into three, four or five or other numbers of loading areas 41, and this embodiment does not impose specific limitations on this.

[0060] It is worth noting that in this embodiment, each placement position 411 requires stacking three I-beams 100.

[0061] Based on the above, in this embodiment, the material distribution mechanism 6 places I-beams 100 one by one into all the placement positions 411 of the material distribution tray 4, so as to place a layer of I-beams 100 on the material distribution tray 4. Moreover, the material distribution tray 4 stacks I-beams 100 layer by layer until the material distribution tray 4 has a preset number of layers of I-beams 100.

[0062] Based on the above, the material distribution pallet 4 is equipped with a pin 42, and all placement positions 411 are correspondingly provided with pins 42. The material distribution mechanism 6 can fit the I-beams 100 onto the outer periphery of the pins 42, thereby ensuring that the stacked I-beams 100 will not be scattered during transportation and storage.

[0063] Moreover, the pin 42 can also provide precise positioning for the material distribution mechanism 6 to place the I-beam 100. Specifically, after the material distribution mechanism 6 picks up the I-beam 100, it can accurately put the I-beam 100 on according to the position of the pin 42, avoiding the situation where the I-beam 100 is not stacked steadily or the proportion is incorrect due to placement deviation.

[0064] For example, the material distribution mechanism 6 can identify the position of the pin 42 through visual detection, and then accurately set the I-beam wheel 100 to the outer periphery of the pin 42.

[0065] Furthermore, in this embodiment, the material distribution mechanism 6 includes a robotic arm 61 and a gripper 62. The robotic arm 61 is configured to drive the gripper 62 to move, and the gripper 62 is configured to grip the I-beam wheel 100, so that the material distribution mechanism 6 can pick up the I-beam wheel 100 from the loading tray 3 and place the I-beam wheel 100 in the placement position 411.

[0066] The robotic arm 61 has multiple degrees of freedom and can flexibly adjust the position and orientation of the gripper 62 to adapt to the gripping needs of the I-beam 100 at different positions and angles. The gripper 62 ensures that the I-beam 100 will not slip during handling.

[0067] It is understood that the gripper 62 can be selected from various forms such as pneumatic calipers or electric calipers, as long as it can achieve stable gripping and release of the H-beam wheel 100. This embodiment does not impose specific restrictions on this.

[0068] In addition, the transportation system includes a first transport vehicle 51 and a second transport vehicle (not shown in the figure). The first transport vehicle 51 is configured to transfer the loading pallet 3, and the second transport vehicle is configured to move the distributing pallet 4. The first transport vehicle 51 and the second transport vehicle operate in parallel without interfering with each other, thereby saving the waiting time caused by the frequent switching of transportation tasks by a single transport vehicle, and further improving the efficiency of the distributing operation.

[0069] For example, in this embodiment, both the first transport vehicle 51 and the second transport vehicle are forklifts. The fork arm 511 of the first transport vehicle 51 can be inserted under the loading pallet 3 to transport the loading pallet 3, and the fork arm 511 of the second transport vehicle can be inserted under the distributing pallet 4 to transport the distributing pallet 4.

[0070] Based on the above, the loading platform 1 is provided with a first receiving groove 11, and one side of the first receiving groove 11 is formed as a first opening 111. The first transport vehicle 51 puts the loading pallet 3 into the first receiving groove 11 through the first opening 111. That is, the fork arm 511 of the first transport vehicle 51 can extend into the first receiving groove 11 through the first opening 111, thereby putting the loading pallet 3 into the first receiving groove 11. The first receiving groove 11 can position the loading pallet 3, thereby preventing the loading pallet 3 from shaking when the dispensing mechanism 6 dispenses the I-beam 100, thereby ensuring that the dispensing mechanism 6 can accurately pick up the I-beam 100.

[0071] The dispensing table 2 is provided with a second receiving groove 21. One side of the second receiving groove 21 forms a second opening 211. The second transport vehicle puts the dispensing pallet 4 into the second receiving groove 21 through the second opening 211. That is, the fork arm 511 of the second transport vehicle can extend into the second receiving groove 21 through the second opening 211 to put the dispensing pallet 4 into the second receiving groove 21. The second receiving groove 21 can position the dispensing pallet 4, thereby preventing the dispensing pallet 4 from shaking when the dispensing mechanism 6 dispenses the I-beam 100, thus ensuring that the dispensing mechanism 6 can accurately place the I-beam 100.

[0072] Based on the above, the first receiving groove 11 includes a first groove portion 112 and a second groove portion 113. The first groove portion 112 forms a first opening 111 on the side away from the second groove portion 113. The width of the first groove portion 112 gradually decreases from the side away from the second groove portion 113 to the side closer to the second groove portion 113. The first groove portion 112 can guide the loading tray 3 into the first receiving groove 11, thereby ensuring that the first receiving groove 11 can accurately position the loading tray 3.

[0073] The second receiving groove 21 includes a third groove 212 and a fourth groove 213. The third groove 212 forms a second opening 211 on the side away from the fourth groove 213. The width of the third groove 212 gradually decreases from the side away from the fourth groove 213 to the side closer to the fourth groove 213. The third groove 212 can guide the material distribution tray 4 into the second receiving groove 21, thereby ensuring that the second receiving groove 21 can accurately position the material distribution tray 4.

[0074] In addition, the loading platform 1 and the dispensing platform 2 are surrounded by a fence 7. It is understood that the fence 7 also surrounds the outer perimeter of the dispensing mechanism 6. The fence 7 can provide safety protection for the entire dispensing operation area of ​​the H-beam 100, thereby blocking external factors from interfering with the dispensing operation.

[0075] It is worth noting that the enclosure 7 is provided with a first inlet / outlet 71 and a second inlet / outlet 72. The first inlet / outlet 71 is directly opposite to the first opening 111 of the loading platform 1, so that the fork arm 511 of the first transport vehicle 51 can extend into the enclosure 7 and be inserted into the first receiving slot 11. All the sub-packaging platforms 2 are correspondingly provided with a second inlet / outlet 72, which is directly opposite to the second opening 211, so that the fork arm 511 of the second transport vehicle can extend into the enclosure 7 and be inserted into the second receiving slot 21.

[0076] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A plate-splitting device with an H-beam wheel, characterized in that, include: The loading platform (1) and the dispensing platform (2) are configured to receive the loading tray (3) and the dispensing platform (2) are configured to receive the dispensing tray (4). The dispensing tray (4) is divided into a loading area (41). The loading area (41) is provided with a preset number of placement positions (411), and all the placement positions (411) are arranged in a preset manner. The transport system is configured to transfer the loading pallet (3) carrying a plurality of stacking I-beams (100) to the loading platform (1), and to remove the empty loading pallet (3) from the loading platform (1), and is also configured to transfer the empty dispensing pallet (4) to the dispensing platform (2), and to remove the fully loaded dispensing pallet (4) from the dispensing platform (2); The material distribution mechanism (6) is configured to pick up the I-beam (100) from the loading tray (3) and place the I-beam (100) into the placement position (411).

2. The I-beam reel separator according to claim 1, characterized in that, The outer periphery of the material distribution mechanism (6) is provided with two or more of the aforementioned dispensing tables (2).

3. The I-beam reel separator according to claim 1, characterized in that, The material distribution tray (4) is divided into two or more loading areas (41).

4. The I-beam reel separator according to claim 1, characterized in that, The transportation system includes a first transport vehicle (51) and a second transport vehicle, the first transport vehicle (51) being configured to transfer the loading pallet (3) and the second transport vehicle being configured to transfer the distributing pallet (4).

5. The I-beam reel separator according to claim 4, characterized in that, The loading platform (1) is provided with a first receiving groove (11), and one side of the first receiving groove (11) is formed as a first opening (111). The first transport vehicle (51) puts the loading pallet (3) into the first receiving groove (11) through the first opening (111). The dispensing station (2) is provided with a second receiving groove (21), and one side of the second receiving groove (21) is formed as a second opening (211). The second transport vehicle puts the dispensing tray (4) into the second receiving groove (21) through the second opening (211).

6. The I-beam reel separator according to claim 1, characterized in that, The loading platform (1) and the dispensing platform (2) are surrounded by a fence (7).

7. The I-beam reel separator according to claim 1, characterized in that, The material distribution mechanism (6) includes a robotic arm (61) and a gripper (62). The robotic arm (61) is configured to drive the gripper (62) to move, and the gripper (62) is configured to grip the I-beam (100).

8. The I-beam reel separator according to claim 1, characterized in that, The material distribution tray (4) is equipped with a pin (42), and all the placement positions (411) are correspondingly provided with the pin (42). The material distribution mechanism (6) can fit the I-beam wheel (100) onto the outer periphery of the pin (42).

9. A method for dividing a plate using an I-beam wheel, applied to the I-beam wheel dividing equipment as described in any one of claims 1-8, characterized in that, The method for dividing the I-beam wheel includes: The material distribution mechanism (6) picks up the I-beam wheel (100) from the loading tray (3) and places the I-beam wheel (100) at the placement position (411) of the material distribution tray (4); After the loading pallet (3) on the loading platform (1) is empty, the transportation system replaces the loading pallet (3); Once the material distribution pallet (4) on the dispensing station (2) is fully loaded, the transportation system replaces the material distribution pallet (4).

10. The method for dividing the disc using an H-beam wheel according to claim 9, characterized in that, The material distribution mechanism (6) places the I-beams (100) one by one into all the placement positions (411) of the material distribution tray (4) to place a layer of the I-beams (100) on the material distribution tray (4); The material distribution tray (4) stacks the I-beams (100) layer by layer until the material distribution tray (4) has a preset number of layers of the I-beams (100).