Automatic loading and unloading system for polycrystalline silicon and automatic returning system for steel pallets
By establishing an automated transport channel between the automated warehouse and the loading trucks, an automated polysilicon loading and pallet return system has been implemented, solving the problem of low loading efficiency, achieving automated loading and pallet return, improving management level and reducing safety risks.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN YONGXIANG CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-07-24
Smart Images
Figure CN224547508U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of polysilicon production technology, specifically to an automatic loading system for polysilicon materials and an automatic return system for steel pallets. Background Technology
[0002] In polysilicon production workshops, the traditional method of loading silicon materials is manual forklift loading, which is not only labor-intensive but also inefficient. Furthermore, due to the large volume and heavy weight of polysilicon materials, there is a risk of them falling during transport, posing a safety hazard to operators. To improve the logistics efficiency of the manufacturing industry, automated storage and retrieval systems (AS / RS) have emerged. Also known as high-bay warehouses, AS / RS are warehouses that use material handling equipment for the inbound and outbound operations of goods. They typically consist of high-rise racks, stacker cranes, conveyors, control systems, and a warehouse management system (WMS), enabling automated storage and retrieval of unit goods under computer system control.
[0003] As disclosed in the prior art, patent CN218705950U discloses a polycrystalline silicon finished product transfer and storage system, which includes: an automated storage and retrieval system (AS / RS), an automated guided vehicle (AGV), and a four-way vehicle. The AS / RS has a first storage space with a first opening at one end. The four-way vehicle is positioned within the first storage space. The AGV has a first output end. When the distance between the AGV and the AS / RS is less than a threshold value, the first output end contacts and engages with the first opening. The AS / RS has a first storage space, the four-way vehicle can move within the first storage space to transport materials, and the AGV can transport materials to the AS / RS from outside the AS / RS.
[0004] The aforementioned patents are mainly used to realize the transfer and storage of polysilicon finished products inside automated warehouses. However, when it is necessary to load polysilicon finished products in the automated warehouses onto trucks, there is a lack of an automated transportation channel connecting the automated warehouses and the loading trucks. In view of this, this solution proposes a system that can connect the automated warehouses and the loading trucks to realize the automatic loading of polysilicon materials and the automatic return of steel pallets to the warehouse. Utility Model Content
[0005] This invention aims to solve the problem of low loading efficiency and low automation of polysilicon finished products caused by the lack of an automated transport channel between the automated warehouse and the loading trucks. It proposes an automated loading and pallet return system for polysilicon. This system establishes an automated transport channel between the automated warehouse and the loading trucks, realizing automated loading of polysilicon and automated return of steel pallets, thereby improving the loading efficiency of polysilicon and enhancing the management and automation level of polysilicon finished product transfer.
[0006] To achieve the above-mentioned objectives, the technical solution of this utility model is as follows:
[0007] An automated polysilicon loading and pallet return system includes an automated polysilicon loading conveyor line and an automated pallet return conveyor line. The starting point of the automated polysilicon loading conveyor line is connected to the pallet exit port, and it is used to transport pallets carrying polysilicon from the exit port to the loading point. The loading point is equipped with a loading machine for transferring the pallets to loading trucks. The automated pallet return conveyor line is located below the automated polysilicon loading conveyor line. A lifting conveyor is installed between the automated polysilicon loading conveyor line and the automated pallet return conveyor line. The lifting conveyor is used to load empty pallets after unloading onto the automated pallet return conveyor line. The ending point of the automated pallet return conveyor line is connected to the pallet return port.
[0008] Preferably, the automatic silicon loading conveyor line and the automatic steel pallet return conveyor line include multiple conveying devices connected end to end in a preset conveying direction. The conveying devices include linear conveying devices and directional conveying devices, and the directional conveying devices are arranged between two linear conveying devices perpendicular to the conveying direction.
[0009] Preferably, the linear conveying equipment includes a chain conveyor, a belt conveyor, and an idler conveyor; the turning conveying equipment includes a roller lifting transfer machine and a chain lifting transfer machine.
[0010] Preferably, the automatic silicon loading and conveying line includes a front low-level conveying line connected to the pallet exit and a rear high-level conveying line higher than the automatic steel pallet return conveying line, and a hoist is provided between the low-level conveying line and the high-level conveying line to lift the pallets from the low-level conveying line to the high-level conveying line.
[0011] Preferably, photoelectric sensors for detecting the current position information of pallets are installed on the automatic silicon loading conveyor line and the automatic steel pallet return conveyor line, and the photoelectric sensors are connected to the drive motor signals of each conveying device.
[0012] Preferably, there are two pallet outlets. The automatic silicon loading conveyor line is arranged symmetrically based on the two outlet positions, so that each pallet outlet corresponds to a loading point, and the two loading points are arranged symmetrically with the center line connecting the two pallet outlets as the axis.
[0013] Preferably, a detection point and a corresponding manual handling channel are set at the connection between the automatic silicon loading conveyor line and the pallet outlet. The outlet of the manual handling channel is connected to the automatic steel pallet return conveyor line. A turning conveyor is set at the intersection of the manual handling channel and the automatic silicon loading conveyor line.
[0014] Preferably, the loading machine is connected to a track located between the loading point and the loading vehicle, and the loading machine is equipped with forks that cooperate with the pallet to pick up materials.
[0015] In summary, this utility model has the following advantages:
[0016] 1. This utility model establishes an automated transportation channel between the automated warehouse and the loading trucks, thereby realizing the automated loading of polysilicon materials and the return of pallets to the warehouse. This improves the loading efficiency of polysilicon materials and the management and automation level of polysilicon finished product transfer, while reducing the intensity of manual labor and the safety risks to operators.
[0017] 2. This utility model is equipped with a manual processing channel, which can process the silicon material in the unqualified pallets and load it manually, so as to realize the detection and transfer of unqualified materials, thereby realizing the control and management of silicon material loading quality.
[0018] 3. In this utility model, based on the two pallet outlets, the automatic loading and conveying line for silicon material is also arranged symmetrically. Each of the two pallet outlets is set with a corresponding loading point. The two loading points are arranged symmetrically with the center line connecting the two pallet outlets as the axis. This can save the floor space occupied by the automatic loading and pallet return system as much as possible and make reasonable use of space. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the layout of the automatic loading and automatic return system for polysilicon materials and steel pallets of this utility model.
[0020] Figure 2 This is a side view of the loading machine.
[0021] Figure 3 This is a schematic diagram of the structure of a roller lifting transfer machine;
[0022] Figure 4 This is a schematic diagram of the chain-lift transfer machine.
[0023] Figure 5 This is a schematic diagram showing the installation location of the steering conveyor equipment;
[0024] Figure 6 This is a schematic diagram of the operation of the lifting conveyor.
[0025] In the picture:
[0026] 1. Automated loading conveyor line for silicon material; 2. Automated return conveyor line for steel pallets; 3. Outlet; 4. Hoist; 5. Lifting conveyor; 6. Steering conveyor; 7. Loading machine; 8. Manual forklift; 9. Return outlet; 10. Forks; 11. Manual handling channel; 12. Stack; 13. Rail; 14. Loading truck; 15. Chain conveyor; 601. Roller lifting transfer machine; 602. Chain lifting transfer machine. Detailed Implementation
[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0030] In the description of this utility model, it should be noted that the terms "upper," "vertical," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, 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 this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0031] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0032] This utility model provides an automatic polysilicon loading and automatic steel pallet return system, including an automatic polysilicon loading conveyor line 1 and an automatic steel pallet return conveyor line 2. The starting point of the automatic polysilicon loading conveyor line 1 is connected to the pallet exit 3, and is used to transport pallets carrying polysilicon from the exit 3 to the loading point. The loading point is equipped with a loading machine 7 for transferring the material stacks 12 on the pallets to the loading trucks 14. The automatic steel pallet return conveyor line 2 is located below the automatic polysilicon loading conveyor line 1. A lifting conveyor 5 is installed between the automatic polysilicon loading conveyor line 1 and the automatic steel pallet return conveyor line 2. The lifting conveyor 5 is located at the loading point and is used to load empty pallets after unloading onto the automatic steel pallet return conveyor line 2. The ending point of the automatic steel pallet return conveyor line 2 is connected to the return port 9 of the automated warehouse.
[0033] In this solution, the automated silicon material loading conveyor line 1 and the automated steel pallet return conveyor line 2 can be implemented using existing conveying equipment. For example, for linear conveying, chain conveyors 15, belt conveyors, and idler conveyors can be used; for directional conveying, roller lifting transfer machines can be used. Each conveyor has its own drive motor and corresponding conveying mechanism. By combining the aforementioned conveying equipment end-to-end according to a pre-set layout, an automated conveyor line can be formed. The position of the steel pallet on the conveyor line can be detected using photoelectric sensors, infrared sensors, or other position sensors. Based on the detected steel pallet position signal, the conveying equipment can be assisted in completing the automatic connection and steering control during the steel pallet transportation process.
[0034] Through the above arrangement, this solution can be combined with an automated warehouse to realize the automatic loading and pallet return of polysilicon, improve the loading efficiency of polysilicon, reduce the intensity of manual labor, and improve the management and automation level of the polysilicon finished product loading and conveying line.
[0035] The working process of this utility model is as follows: The pallet carrying the material stack 12 is output from the warehouse outlet 3 and enters the silicon material automatic loading conveyor line 1. After the pallet is transported to the designated loading point by the conveying equipment, the loading machine 7 loads the silicon material in the pallet onto the truck. After the loading machine 7 completes the loading, the empty pallet is lowered to the steel pallet automatic return warehouse conveyor line 2 by the lifting conveyor 5. The steel pallet automatic return warehouse conveyor line 2 transports the empty pallet to the return warehouse outlet 9 to realize the return to the warehouse.
[0036] Example 1
[0037] This embodiment provides, for example Figure 1 The system shown includes an automatic loading and automatic return system for polysilicon, comprising an automatic loading conveyor line 1 for polysilicon and an automatic return system for steel pallets 2 for steel pallets. The starting point of the automatic loading conveyor line 1 is connected to the pallet outlet of the automated warehouse, and the ending point of the automatic loading conveyor line 1 is equipped with a loading machine 7.
[0038] In this design, to accommodate the height of the pallet outlet 3, the section before the automatic silicon loading conveyor line 1 connecting to the pallet outlet 3 is a low-level conveyor line, at the same height as the automatic steel pallet return conveyor line 2. The section after the automatic silicon loading conveyor line 1 is a high-level conveyor line, with a height difference of approximately 0.5m between it and the automatic steel pallet return conveyor line 2. This design utilizes a lift 4 to raise the height of the pallets at both ends of the automatic silicon loading conveyor line 1, thus saving space and facilitating loading to match the height of the loading truck 14. Preferably, an existing logistics pallet lift can be used as the lift.
[0039] The automatic steel pallet return conveyor line 2 is located below the automatic silicon material loading conveyor line 1, and the end point of the automatic steel pallet return conveyor line 2 connects to the return port 9 of the automated warehouse. At the loading point, a lifting conveyor 5 is installed to connect the automatic steel pallet return conveyor line 2 and the automatic silicon material loading conveyor line 1. The lifting conveyor 5 can transport empty pallets after loading to the automatic steel pallet return conveyor line 2.
[0040] The automated silicon material loading conveyor line 1 and the automated steel pallet return conveyor line 2 mainly utilize existing conveying equipment combined end-to-end along the conveying route to achieve automated conveying. For example, in the straight conveying stage, methods such as... Figure 6 The chain conveyor shown can also be implemented using belt conveyors, roller conveyors, or other equipment, which have independent drive motors and corresponding transmission mechanisms.
[0041] At the bends in the conveyor line, a turning conveyor 6 can be installed to change the conveying direction of the pallets, allowing it to connect with the conveyor after the turn. In this solution, the turning conveyor 6 can be as follows: Figure 3 The roller lifting transfer machine 601 shown or as... Figure 4 The chain lifting transfer machine 602 is shown. The roller lifting transfer machine 601 includes a power unit and a conveyor roller driven by the power unit and perpendicular to the material conveying direction. The chain lifting transfer machine 602 includes a power unit and a conveyor chain driven by the power unit and perpendicular to the material conveying direction. The roller lifting transfer machine 601 / chain lifting transfer machine 602 is arranged in the gaps in the middle of the chain conveyor, such as... Figure 5 As shown, by controlling the lifting and lowering of the roller lifting transfer machine 601 / chain lifting transfer machine 602, the conveying surface and conveying direction in contact with the bottom of the pallet are changed, thereby changing the current conveying direction of the material and realizing the turning and transportation of the material.
[0042] Furthermore, both conveyor lines are equipped with photoelectric sensors to detect the current position of the pallets. The position detection signals from the photoelectric sensors can assist each conveyor device in completing the automatic transport of the pallets.
[0043] In this scheme, the structure of the loading machine 7 is as follows: Figure 2 As shown, the loading machine 7 is connected to the track 13 and can travel back and forth between the loading point and the loading truck 14. The loading machine 7 is equipped with forks 10. When the loading machine 7 reaches the loading point, it extends the forks 10 to take out the stack of materials 12 from the steel pallet, and then delivers the stack of materials 12 to the corresponding loading position by rotating the forks 10.
[0044] Preferably, to improve outbound loading efficiency, in this embodiment, the number of pallet outlets 3 can be set to two. Based on the two pallet outlets 3, the automatic silicon loading conveyor line 1 can also be arranged symmetrically, with each of the two pallet outlets 3 corresponding to a loading point. These two loading points are arranged symmetrically about the center line connecting the two pallet outlets 3, and each has a corresponding loading machine 7 and a lifting conveyor 5. The automatic steel pallet return conveyor line 2 connects the lifting conveyors 5 corresponding to the two loading points. This arrangement can minimize the footprint of the automatic loading and pallet return system, make reasonable use of space, and improve outbound loading efficiency.
[0045] In this solution, the lifting conveyor 5 can be a scissor lift conveyor. The scissor lift conveyor can switch between high-level and low-level conveyor lines, serving a connecting function. Figure 6 As shown.
[0046] The workflow in this embodiment is as follows:
[0047] The pallet carrying the material stack 12 is output from the outlet 3 and enters the automatic silicon loading conveyor line 1. It is continuously conveyed by the conveying equipment. When it reaches the elevator 4, the pallet is lifted by the elevator 4 to the high-level conveyor line for continued conveying.
[0048] When the photoelectric sensor detects that the pallet has reached the turning point, the steering conveyor 6 is activated to change the conveying direction of the pallet;
[0049] When the pallet arrives at the loading point, the lifting conveyor 5 waits to be loaded. The loading machine 7 moves to the picking point via the track 13, extends the forks 10 to connect to the material stack 12, stops at the position to be loaded / unloaded by laser detection, and delivers the material stack 12 to the corresponding loading position by rotating the forks 10 to complete the loading work. The forks 10 are then retracted, completing one loading action.
[0050] After loading is completed, the lifting conveyor 5 descends to the same height as the automatic steel pallet return conveyor line 2, and transports the empty pallets to the automatic steel pallet return conveyor line 2 to realize the return transportation of empty pallets.
[0051] Example 2
[0052] Based on Example 1, this example proposes an automatic polysilicon loading and steel pallet return system. Further, a detection point is installed at the junction of the automatic polysilicon loading conveyor line 1 and the pallet exit 3. This detection point is mainly used to check whether the parameters of the currently output palletized polysilicon are qualified, such as the weight and appearance of the polysilicon. A manual processing channel 11 is also connected to this detection point. Pallets that fail the detection directly enter the manual processing channel 11, whose exit connects to the automatic steel pallet return conveyor line 2 for returning unqualified polysilicon or empty pallets to the warehouse. In this scheme, the manual processing channel 11 is located close to the loading point to facilitate the processing of unqualified polysilicon before manual loading.
[0053] In this scheme, a steering conveyor 6 is installed at the inspection point, located at the junction of the manual processing channel 11 and the automatic silicon loading conveyor line 1. Pallets that pass inspection can proceed normally onto the automatic silicon loading conveyor line 1. Pallets that fail inspection are guided by the steering conveyor 6 to the manual processing channel 11, where they are processed and then loaded onto trucks using a manual forklift 8. The working principle of the steering conveyor 6 is the same as in Embodiment 1, and will not be repeated here.
[0054] The settings in this embodiment enable the detection and transfer of substandard materials, thereby achieving control and management of the silicon material loading quality.
[0055] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.
Claims
1. An automatic loading system for polysilicon and an automatic return system for steel pallets to the warehouse, characterized in that, The system includes an automatic silicon loading conveyor line (1) and an automatic steel pallet return conveyor line (2). The starting point of the automatic silicon loading conveyor line (1) is connected to the pallet exit (3) and is used to transport pallets carrying silicon from the exit (3) to the loading point. The loading point is equipped with a loading machine (7) for transferring the material stacks (12) on the pallets to the loading truck (14). The automatic steel pallet return conveyor line (2) is located below the automatic silicon loading conveyor line (1). A lifting conveyor (5) is provided between the automatic silicon loading conveyor line (1) and the automatic steel pallet return conveyor line (2). The lifting conveyor (5) is used to load empty pallets after unloading onto the automatic steel pallet return conveyor line (2). The end point of the automatic steel pallet return conveyor line (2) is connected to the pallet return port (9).
2. The automatic loading and automatic pallet return system for polycrystalline silicon as described in claim 1, characterized in that, The automatic silicon loading conveyor line (1) and the automatic steel pallet return conveyor line (2) include multiple conveying devices connected in sequence in a preset conveying direction. The conveying devices include linear conveying devices and turning conveying devices (6). The turning conveying devices (6) are arranged between two linear conveying devices that are perpendicular to the conveying direction.
3. The automatic loading and automatic pallet return system for polycrystalline silicon as described in claim 2, characterized in that, The linear conveying equipment includes a chain conveyor, a belt conveyor and an idler conveyor; the turning conveying equipment (6) includes a roller lifting transfer machine (601) and a chain lifting transfer machine (602).
4. The automatic loading and automatic return system for polycrystalline silicon materials to the warehouse as described in claim 1, characterized in that, The automatic loading and conveying line (1) for silicon material includes a front low-level conveying line connected to the pallet outlet (3) and a rear high-level conveying line higher than the automatic return conveying line (2) for steel pallets. A hoist (4) is provided between the low-level conveying line and the high-level conveying line to lift the pallets from the low-level conveying line to the high-level conveying line.
5. The automatic loading and automatic pallet return system for polycrystalline silicon as described in claim 2, characterized in that, Photoelectric sensors for detecting the current position information of pallets are installed on the automatic silicon loading conveyor line (1) and the automatic steel pallet return conveyor line (2). The photoelectric sensors are connected to the drive motor signals of each conveying device.
6. The automatic loading and automatic pallet return system for polycrystalline silicon as described in claim 1, characterized in that, There are two pallet outlets (3). The silicon material automatic loading and conveying line (1) is arranged symmetrically based on the two outlets (3), so that each of the two pallet outlets (3) corresponds to a loading point, and the two loading points are arranged symmetrically with the center line of the line connecting the two pallet outlets (3) as the axis.
7. The automatic loading and automatic pallet return system for polycrystalline silicon as described in claim 1, characterized in that, The connection between the automatic silicon loading conveyor line (1) and the pallet outlet (3) is provided with a detection point and a corresponding manual processing channel (11). The outlet of the manual processing channel (11) is connected to the automatic steel pallet return conveyor line (2). A turning conveyor (6) is provided at the intersection of the manual processing channel (11) and the automatic silicon loading conveyor line (1).
8. The automatic loading and automatic return system for polycrystalline silicon materials to the warehouse as described in claim 1, characterized in that, The loading machine (7) is connected to the track (13), which is located between the loading point and the loading vehicle (14). The loading machine (7) is equipped with forks (10) that cooperate with the pallet to pick up materials.