A packaging material for finished single-crystal square rods
By using elastic patches and embedded parts in the packaging of single-crystal finished square rods, the problems of edge pressing and wear caused by small groove alignment errors in EPP packaging materials were solved, thus improving the quality and safety of finished products during transportation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 四川永祥光伏科技有限公司
- Filing Date
- 2025-06-06
- Publication Date
- 2026-05-26
Smart Images
Figure CN224278015U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bar packaging technology, specifically to a packaging material for single-crystal finished square bars. Background Technology
[0002] As the final step in the processing of monocrystalline silicon rods, the alignment accuracy between the finished square rod and the groove in the packaging material is crucial, directly affecting the safety during automobile transportation.
[0003] Currently, the packaging material for G12 single-crystal finished square rods uses traditional EPP material, with multiple layers of square rods separated by partitions. However, in practical use, EPP packaging materials have the following problems:
[0004] 1. The small margin in the width direction of the groove supporting the square bar (the gap between the square bar and the side wall of the groove is too small) combined with the cumulative errors of various factors such as gears and racks, ground rail robots, and visual recognition in the automated packaging system, it is easy to cause the small redundancy of the alignment error between the square bar grasped and placed by the robot and the groove. The square bar is tilted along the length direction of the groove, which is very easy to press against the side wall of the groove and produce edge pressing.
[0005] 2. During truck transportation, the square bars may shift due to various vibrations and impacts caused by bumpy road conditions. This can lead to friction between the surface of the square bars and the EPP packaging material, resulting in surface defects such as abrasion marks, microcracks, and chipping, which reduces the quality of the finished product.
[0006] 3. The middle layer partition has a low safety factor (strength) and is prone to plastic deformation under the heavy pressure of the square bar, which reduces the centering accuracy of the square bar. Utility Model Content
[0007] To address the shortcomings of existing technologies, this utility model provides a single-crystal finished square rod packaging material, which solves the problems of small redundancy in the centering error between the groove and the square rod in existing EPP packaging materials, which can lead to edge pressing; easy damage to the surface of the square rod due to friction with the EPP packaging material; and low safety factor of the middle partition, which can cause plastic deformation and reduce the centering accuracy of the square rod.
[0008] To achieve the above objectives, the present invention provides the following technical solution:
[0009] A packaging material for finished single-crystal square rods includes:
[0010] The base plate is placed on the tray, and its top surface has a first groove for supporting the bottom square bar.
[0011] The intermediate lining, consisting of multiple layers stacked at equal intervals above the base plate, has second grooves on both its top and bottom surfaces corresponding to the first groove. These grooves cover the next layer (including the bottommost layer) and support the multiple intermediate layers and the topmost square rod.
[0012] A cover plate is provided above the middle liner, and its bottom surface has a third groove corresponding to the second groove, which is used to cover the uppermost square bar.
[0013] The bottom of the first to third grooves is covered with a first elastic patch, and the side walls of the first to third grooves are covered with L-shaped second elastic patches.
[0014] In one embodiment disclosed in this application, the first elastic patch is white and the second elastic patch is black.
[0015] In one embodiment disclosed in this application, the first elastic patch and the second elastic patch have the same thickness, which is 1 to 4 mm, and they are both made of EVA.
[0016] In one embodiment disclosed in this application, the widths of the first to third grooves are the same, each being 10 to 14 mm wider than the side width of the square bar.
[0017] In one embodiment disclosed in this application, multiple first grooves are provided at equal intervals along the top surface of the bottom plate, and every two adjacent first grooves are separated by a first rib.
[0018] The second groove is provided in multiple equal intervals along the top and bottom surfaces of the liner, and each pair of adjacent second grooves is separated by a second rib.
[0019] The third groove is provided at equal intervals along the bottom surface of the cover plate, and each two adjacent third grooves are separated by a third rib.
[0020] Second elastic patches are also laid and bonded on the first to third ribs respectively, so that the cross-section of the second elastic patch at this point is a U-shaped structure.
[0021] In one embodiment disclosed in this application, a plurality of parallel embedded parts are equidistantly embedded in the inner lining;
[0022] Each of the aforementioned embedded parts extends along the width direction of the second groove.
[0023] In one embodiment disclosed in this application, each of the embedded parts includes an intermediate plate and a straight plate;
[0024] The cross-section of the intermediate plate has an inverted V-shaped structure;
[0025] The single-plate is symmetrically connected to both sides of the middle plate, and the single-plate is provided with several holes at equal intervals to form a mechanical interlock with the middle lining during molding.
[0026] In one embodiment disclosed in this application, five first grooves are equally spaced along the top surface of the bottom plate, five second grooves are equally spaced along the top and bottom surfaces of the middle liner, and five third grooves are equally spaced along the bottom surface of the cover plate.
[0027] Three embedded parts are arranged parallel to each other along the length of the second groove, and each embedded part is stamped from a stainless steel sheet metal part.
[0028] In one embodiment disclosed in this application, the top surface of the cover plate is inlaid with an aluminum frame around its perimeter to fix it in place and withstand the pressure from the packing straps to prevent deformation.
[0029] In one embodiment disclosed in this application, the base plate, the middle liner, and the cover plate are respectively made of EPP material by compression molding.
[0030] Compared with the prior art, the beneficial effects of this utility model are:
[0031] 1. By setting the first and second elastic patches, not only can the square bar be isolated to avoid direct contact with the body of the first to third grooves and friction damage, thus fundamentally eliminating the basis for the appearance defects of the square bar, but it can also form a buffer protection for the square bar through its own rebound, ensuring the quality of the finished square bar.
[0032] 2. By increasing the width of the first to third grooves, the redundancy of the alignment error between the bar and the corresponding groove when the robot places the bar can be increased. Even if the bar is tilted along the length of the corresponding groove, it will be moderately corrected by the rebound of the second elastic patch, thereby completely eliminating the edge pressing caused by the small gap between the bar and the corresponding groove, and further ensuring the quality of the finished bar.
[0033] 3. By using multiple equidistant and parallel embedded parts, the safety factor (strength) of the lining can be improved, its plastic deformation can be effectively reduced, and the centering accuracy of the square bar can be improved. Attached Figure Description
[0034] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0035] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;
[0036] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;
[0037] Figure 3 This is a schematic diagram of the three-dimensional structure of the base plate;
[0038] Figure 4 A schematic diagram of the three-dimensional structure of the lining;
[0039] Figure 5 This is a schematic diagram of the right-side structure of the interlining;
[0040] Figure 6 This is a schematic diagram of the three-dimensional structure of the cover plate. Detailed Implementation
[0041] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.
[0042] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0044] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., 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 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. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0045] 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.
[0046] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this invention.
[0047] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.
[0048] See Figures 1-6 As shown, this utility model provides a packaging material for a single-crystal finished square rod, comprising:
[0049] The base plate 10 is placed on a tray (not shown in the figure), and its top surface has a first groove 11 for supporting the bottom square bar (not shown in the figure).
[0050] The intermediate lining 20, located above the base plate 10 and stacked at equal intervals, has second grooves 21 on both its top and bottom surfaces corresponding to the first groove 11, used to cover the next layer (including the bottommost layer) and support the multiple intermediate layers and the topmost square rod; and
[0051] A cover plate 30 is located above the middle lining 20, and its bottom surface has a third groove 31 corresponding to the second groove 21, which is used to cover the uppermost square bar.
[0052] The bottom of the first to third grooves is covered with a first elastic patch 40, and the side walls of the first to third grooves are covered with an L-shaped second elastic patch 50.
[0053] During packaging, the base plate 10 is first placed on the pallet. Then, a robotic arm picks up a square bar to be packaged and transported, and places it into the first groove 11. Next, the middle liner 20 is placed on top, and the second groove 21 on its bottom surface covers the square bar. Then, the robotic arm picks up another square bar to be packaged and transported, and places it into the second groove 21 on the top surface of the middle liner 20. This process of covering the middle liner 20 and placing square bars is repeated until the specified number of intermediate layers is reached. Then, the cover plate 30 is placed on top, and the third groove 31 on its bottom surface covers the top square bar. Finally, the packing straps on the pallet are pulled up and pressed down on the cover plate 30 before being fastened to complete the packaging of the square bar. The first elastic patch 40 and the second elastic patch 50 can isolate the square bar to avoid direct contact with the body of the first to third grooves and friction damage. At the same time, they can reduce the pressure of the square bar on the bottom and sides of the groove through their rebound, and can fully absorb and reduce the impact of vibration and other shocks during the placement and transportation of the square bar. In other words, by setting the first elastic patch 40 and the second elastic patch 50, not only can the square bar be isolated to avoid direct contact with the body of the first to third grooves and friction damage, thus fundamentally eliminating the basis for the appearance defects of the square bar, but it can also form a buffer protection for the square bar through its own rebound, ensuring the quality of the finished square bar.
[0054] The first elastic patch 40 is white, and the second elastic patch 50 is black. Using different colors distinguishes the first elastic patch 40 from the second elastic patch 50, thereby enhancing the aesthetics of the first to third grooves.
[0055] In this embodiment, the first elastic patch 40 and the second elastic patch 50 have the same thickness, which is 1 to 4 mm, and they are both made of EVA.
[0056] The widths of the first to third grooves are the same, each 10-14 mm wider than the side width of the square bar. Calculating the cumulative errors of various factors in the automated packaging system, such as gears and racks, the ground-rail robot, and visual recognition, the widths of the first to third grooves are designed with sufficient margin. This ensures that after theoretical alignment of the square bar with the first to third grooves, the distance between the side walls of the first to third grooves and the side of the square bar is 5-7 mm. In other words, by increasing the width of the first to third grooves, the redundancy of the alignment error between the square bar and its corresponding groove when the robot places it can be increased. Even if the square bar tilts along the length of the corresponding groove, it will be moderately corrected by the rebound of the second elastic patch 50, thereby completely eliminating edge pressing caused by excessively small gaps between the square bar and its corresponding grooves, further ensuring the quality of the finished square bar.
[0057] See Figures 1-4 and Figure 6As shown, multiple first grooves 11 are equally spaced along the top surface of the bottom plate 10, and each pair of adjacent first grooves 11 is separated by a first rib 12; multiple second grooves 21 are equally spaced along the top and bottom surfaces of the middle liner 20, and each pair of adjacent second grooves 21 is separated by a second rib 22; multiple third grooves 31 are equally spaced along the bottom surface of the cover plate 30, and each pair of adjacent third grooves 31 is separated by a third rib 32; second elastic patches 50 are also laid and bonded on the first to third ribs respectively, so that the cross-section of the second elastic patch 50 here is a U-shaped structure.
[0058] Multiple parallel embedded parts 23 are equidistantly inserted into the inner liner 20, each extending along the width direction of the second groove 21. Specifically, the embedded parts 23 are located in the center layer of the inner liner 20, between the second grooves 21 on its top and bottom surfaces, and are integrally formed with the inner liner 20. That is to say, by using multiple equidistant and parallel embedded parts 23, the safety factor (strength) of the inner liner 20 can be improved, its plastic deformation can be effectively reduced, and the centering accuracy of the square bar can be improved.
[0059] See Figure 5 As shown, each embedded part 23 includes a middle plate and a straight plate. The middle plate has an inverted V-shaped cross-section. The straight plate is symmetrically connected to both sides of the middle plate, and several holes are evenly spaced on the straight plate to form a mechanical interlock with the middle liner 20 during molding (that is, when the middle liner 20 is molded, the packaging material will pass through the holes on the straight plate).
[0060] In this embodiment, five first grooves 11 are equally spaced along the top surface of the bottom plate 10, five second grooves 21 are equally spaced along the top and bottom surfaces of the middle liner 20, and five third grooves 31 are equally spaced along the bottom surface of the cover plate 30; three embedded parts 23 are arranged parallel to each other along the length of the second groove 21, and each embedded part 23 is stamped from a stainless steel sheet metal part.
[0061] The top surface of the cover plate 30 is inlaid with an aluminum frame 33 around its perimeter to secure it and withstand the pressure from the packing straps to prevent deformation.
[0062] The base plate 10, the middle liner 20 and the cover plate 30 are made of EPP material by compression molding (steam molding).
[0063] The differences between traditional EPP packaging materials and this utility model, based on simulation and dynamic load capacity analysis, are shown in the following table:
[0064] EPP structure Transportation shock absorption rate Square bar displacement suppression Probability of grinding marks Redundancy of mean square error Safety factor Plastic deformation Traditional Packaging 3% Risk of crushing 100% 3mm 13-27 times ≥1.5mm This packaging 40-50% Lateral displacement reduced by 50%, longitudinal displacement ≤0.5% 0 7mm 45 times 0.6-0.9mm
[0065] Therefore, it can be seen that:
[0066] (1) By laying and bonding the first elastic patch 40 and the second elastic patch 50, the transport impact absorption rate of the square bar is increased by more than 13 times, the lateral displacement of the square bar is reduced by 50%, the longitudinal displacement is ≤0.5%, and the grinding marks are completely eliminated.
[0067] (2) By increasing the width of the first to third grooves, the redundancy of the centering error between the square bar and the groove is increased by more than 1 times, which can completely eliminate the edge pressing caused by the small gap.
[0068] (3) By using multiple equidistant and parallel embedded parts 23, the safety factor of the liner 20 is increased by 18 to 32 times, and the amount of plastic deformation is reduced by 40% to 60%.
[0069] In summary, this utility model fundamentally eliminates the basis for the appearance defects of the square rod by laying adhesive EVA elastic patches on the bottom and side walls of the corresponding groove to isolate the square rod; by increasing the width of the first to third grooves, the alignment error between the square rod and the groove caused by various cumulative errors is reduced, the alignment accuracy is improved, and the edge pressing is eliminated; the use of the embedded part 23 with the composite shape of "inverted V-shape + straight plate" improves the ability of the middle liner 20 to resist instantaneous deformation and impact.
[0070] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the technical solutions of this utility model. Any technical solution that can be implemented based on the above embodiments without creative effort should be considered to fall within the scope of protection of this utility model patent.
Claims
1. A packaging material for a single-crystal finished square rod, characterized in that, include: The base plate is placed on the tray, and its top surface has a first groove for supporting the bottom square bar. The intermediate lining, located above the base plate and stacked at equal intervals, has multiple layers, each with a second groove on its top and bottom surfaces corresponding to the first groove. These grooves cover the next layer (including the bottommost layer) and support multiple intermediate layers and the topmost square bar. A cover plate is provided above the middle liner, and its bottom surface has a third groove corresponding to the second groove, which is used to cover the uppermost square bar. The bottom of the first to third grooves is covered with a first elastic patch, and the side walls of the first to third grooves are covered with L-shaped second elastic patches.
2. The packaging material for single-crystal finished square rods according to claim 1, characterized in that, The first elastic patch is white, and the second elastic patch is black.
3. The packaging material for single-crystal finished square rods according to claim 1 or 2, characterized in that, The first elastic patch and the second elastic patch have the same thickness, which is 1 to 4 mm, and they are both made of EVA.
4. The packaging material for single-crystal finished square rods according to claim 1, characterized in that, The widths of the first to third grooves are the same, each being 10 to 14 mm wider than the side width of the square bar.
5. The packaging material for single-crystal finished square rods according to claim 1 or 4, characterized in that: Multiple first grooves are equally spaced along the top surface of the base plate, and each pair of adjacent first grooves is separated by a first rib. The second groove is provided in multiple equal intervals along the top and bottom surfaces of the liner, and each pair of adjacent second grooves is separated by a second rib. The third groove is provided at equal intervals along the bottom surface of the cover plate, and each two adjacent third grooves are separated by a third rib. Second elastic patches are also laid and bonded on the first to third ribs respectively, so that the cross-section of the second elastic patch at this point is a U-shaped structure.
6. The packaging material for single-crystal finished square rods according to claim 5, characterized in that: Multiple parallel embedded parts are equidistantly inserted into the inner lining; Each of the aforementioned embedded parts extends along the width direction of the second groove.
7. The packaging material for single-crystal finished square rods according to claim 6, characterized in that: Each of the aforementioned embedded parts includes an intermediate plate and a straight plate; The cross-section of the intermediate plate has an inverted V-shaped structure; The single-plate is symmetrically connected to both sides of the middle plate, and the single-plate is provided with several holes at equal intervals to form a mechanical interlock with the middle lining during molding.
8. The packaging material for single-crystal finished square rods according to claim 6 or 7, characterized in that: The first groove is provided with 5 grooves at equal intervals along the top surface of the bottom plate, the second groove is provided with 5 grooves at equal intervals along the top and bottom surfaces of the middle liner, and the third groove is provided with 5 grooves at equal intervals along the bottom surface of the cover plate; Three embedded parts are arranged parallel to each other along the length of the second groove, and each embedded part is stamped from a stainless steel sheet metal part.
9. The packaging material for single-crystal finished square rods according to claim 1, characterized in that, The top surface of the cover plate is inlaid with an aluminum frame around its perimeter to secure it and withstand the pressure from the packing straps to prevent deformation.
10. The packaging material for single-crystal finished square rods according to claim 1 or 9, characterized in that, The base plate, liner, and cover plate are all made of EPP material by compression molding.