Material box

Abstract

The utility model provides a material box which comprises a bottom plate and limiting pieces, the limiting pieces are arranged on the periphery of the bottom plate, and a storage space is defined by the bottom plate and the limiting pieces; the inner side face, at least facing the storage space, of the limiting piece and the top end of the limiting piece are covered with first flexible layers. The limiting piece is provided with at least two supporting blocks, the supporting faces of the at least two supporting blocks are located on the same horizontal plane, and the supporting faces of the supporting blocks are higher than the first flexible layer at the top end of the limiting piece. According to the material box, the supporting block protruding out of the first flexible layer is arranged at the top of the limiting piece, so that when the material box is stored, the bottom plate of the upper-layer material box is supported by the supporting block of the lower-layer material box, the bottom plate of the upper-layer material box is prevented from making contact with the first flexible layer at the top end of the limiting piece of the lower-layer material box, and abrasion of the first flexible layer is avoided.

Description

Technical Field

[0001] This application relates to the field of chip storage, specifically a type of storage cartridge. Background Technology

[0002] Material boxes are used to hold sheet materials (such as silicon wafers, battery cells, separators, etc.). In order to prevent the sheet materials from being damaged by bumping against the inner side of the material box during storage, a flexible layer can be attached to the inner side of the material box. The flexible layer extends upward from the inner side of the material box, goes around the top of the material box, and then extends downward to attach to the outer side of the material box.

[0003] To save space, material boxes are usually stacked together when storing them. The problem this causes is that the bottom plate of the upper material box presses directly onto the flexible layer on top of the lower material box, causing wear and tear on the flexible layer of the lower material box. Utility Model Content

[0004] To address the aforementioned technical problems, this application provides a solar cell power detection device, the detailed technical solution of which is as follows:

[0005] A material box includes a base plate and a limiting member, wherein:

[0006] Limiting components are provided around the perimeter of the base plate, and the base plate and the limiting components together form a storage space.

[0007] The limiting member is covered with a first flexible layer on at least the inner side facing the storage space and on the top of the limiting member.

[0008] The limiting member is provided with at least two support blocks, the support surfaces of the at least two support blocks are located on the same horizontal plane, and the support surfaces of the support blocks are higher than the first flexible layer at the top of the limiting member.

[0009] The material box provided in this application has a support block protruding from the top of the limiting member. Therefore, when storing the material box, the bottom plate of the upper material box is supported by the support block of the lower material box, thereby preventing the bottom plate of the upper material box from contacting the first flexible layer at the top of the limiting member of the lower material box and avoiding wear on the first flexible layer.

[0010] In some embodiments, the limiting member includes a plurality of limiting columns, which are vertically installed on the base plate, and the inner side and top of the limiting columns are covered with a first flexible layer; and / or, the limiting member includes a plurality of limiting beams, each limiting beam including at least two vertical beams and at least one horizontal beam, the vertical beams being vertically fixed on the base plate, all vertical beams being arranged side by side and connected by the horizontal beams, and the vertical beams being provided with a first flexible layer, which at least covers the inner side and top of the corresponding vertical beam.

[0011] This application can, depending on actual needs, use a number of limiting columns to form a storage space, or use a number of limiting beams to form a storage space, or combine limiting columns and limiting beams to form a storage space.

[0012] In some embodiments, when the limiting member includes a plurality of limiting posts, the limiting posts are spaced apart around the perimeter to form a storage space, and support blocks are installed on the limiting posts; when the limiting member includes a plurality of limiting beams, the limiting beams are spaced apart around the perimeter to form a storage space, and support blocks are installed on the limiting beams; when the limiting member includes a plurality of limiting posts and a plurality of limiting beams, the limiting posts and limiting beams are spaced apart around the perimeter to jointly form a storage space, and support blocks are installed on the limiting posts and / or limiting beams; the storage space is cuboid in shape, and support blocks are provided at at least two opposite sidewalls of the storage space.

[0013] The storage space is designed as a cuboid shape, allowing for the stacking of rectangular wafers such as battery cells. By installing support blocks on at least two opposite sidewalls of the storage space, it is ensured that the support blocks can provide support to the upper wafer from at least both sides, thereby guaranteeing the stability of the upper wafer.

[0014] In some embodiments, when the limiting member includes a limiting post, the support block is detachably installed on the top of the limiting post. The support surface of the support block is higher than the first flexible layer at the top of the corresponding limiting post. The first end of the first flexible layer is fixed to the outer side of the limiting post via the support block. The first flexible layer extends upward from the first end, passes around the top of the limiting post, adheres to the inner side, and extends downward to the bottom of the inner side of the limiting post.

[0015] The support block serves to support the bottom plate of the upper material box and prevent wear on the first flexible layer, and also fixes the first end of the first flexible layer to the outer side of the limiting column.

[0016] In some embodiments, when the limiting member includes a limiting post, a first buffer layer is provided between the inner side of the limiting post and the first flexible layer, and the first buffer layer is used to support the first flexible layer.

[0017] The first buffer layer supports the first flexible layer on the limiting column and acts as a buffer to protect the cells and other materials as they fall into the material box.

[0018] In some embodiments, when the limiting member includes a limiting beam, at least one upright beam has a support block at its top, and the support surface of the support block is higher than the first flexible layer at the top of the corresponding upright beam.

[0019] This allows the limiting beam to support the upper material box. Since the supporting surface of the limiting beam is relatively large, the stability of the support for the upper material box can be further improved by setting the support block on the limiting beam.

[0020] In some embodiments, a clearance gap is provided between the support block and the top of the corresponding upright beam; an installation groove is provided at the bottom of the upright beam, and a first clamping block is installed in the installation groove; a first flexible layer covers the inner and outer sides of the upright beam and passes through the clearance gap, and the two ends or the bottom of the first flexible layer are fixed in the installation groove by the first clamping block.

[0021] By fixing the first flexible layer with an installation groove and a first clamping block at the bottom of the upright beam, it can be ensured that the first flexible layer can be tensioned on the top and inner side of the upright beam. By setting an avoidance gap between the support block and the top of the upright beam, the first flexible layer is avoided, allowing it to bypass the top of the upright beam and cover it.

[0022] In some embodiments, when the limiting member includes a limiting beam, a second buffer layer is provided between the inner side of the vertical beam in the limiting beam and the first flexible layer.

[0023] The second buffer layer supports the first flexible layer on the opposing beam and also acts as a buffer to protect the cells and other components as they fall into the material box.

[0024] In some embodiments, when the limiting member includes a plurality of limiting columns and a plurality of limiting beams, there are two limiting beams. The two limiting beams are arranged opposite to each other and respectively constitute two opposite first sidewalls of the storage space. All the columns in the limiting beams are arranged at intervals along the first direction. The other two opposite second sidewalls of the storage space are respectively constituted by a plurality of limiting columns arranged at intervals along the second direction. The first direction is perpendicular to the second direction.

[0025] The limiting columns form two opposing first side walls of the storage space, and the two limiting beams form the other two opposing first side walls of the storage space, making the overall material box symmetrical and increasing the structural stability of the material box.

[0026] In some embodiments, the width of the limiting beam along the first direction is greater than the width of the limiting column along the second direction.

[0027] The limiting beam is wider than the limiting column, which further enhances the supporting strength of the limiting beam. Moreover, it can achieve the limiting effect by simply setting one limiting beam on each side of the storage space, making the structure of the material box simpler.

[0028] In some embodiments, when the limiting member includes a limiting beam, the limiting beam also includes a baffle. The limiting beam has two crossbeams, which are spaced apart in a third direction. The limiting beam is locked to the base plate by one of the crossbeams, and the other crossbeam serves as a first handle. At least one baffle is connected between the two crossbeams.

[0029] The crossbeam, which serves as the first handle, allows for pushing, pulling, lifting, and lowering of the material box, facilitating its position adjustment. A baffle between the two crossbeams prevents the user's hand from touching the sheets stored in the storage space while holding the first handle.

[0030] In some embodiments, the mounting positions of the limiting columns and / or several limiting beams on the base plate are adjustable so that the size of the storage space is adjustable.

[0031] The storage space size can be adjusted, enabling the material box to store sheets of different sizes, thus improving the compatibility of the material box.

[0032] In some embodiments, the material box includes a plurality of partitions disposed on a base plate located within the storage space, all partitions dividing the storage space into at least two storage sub-spaces; the top of the partitions and the first and second side surfaces of the storage sub-spaces facing both sides are covered with a second flexible layer, and the support surface of the support block is higher than the second flexible layer at the top of the partitions.

[0033] By incorporating partitions, the material box has at least two storage sub-spaces, increasing the available storage space and allowing for the categorized storage of tablets in different sub-spaces. Since both opposite sides of the partition are covered with a second flexible layer, the contact between the partition and the edges of the tablets stored in its respective sub-spaces is soft, preventing damage to the tablets. Furthermore, because the support surface of the support block is higher than the second flexible layer at the top of the partition, the second flexible layer at the top of the partition will not contact the stacked material boxes above.

[0034] In some embodiments, the mounting position of the partition on the base plate is adjustable so that the size of the storage subspace is adjustable.

[0035] The size of the storage subspace can be adjusted, enabling the storage subspace to store sheets of different sizes and improving the compatibility of the material box.

[0036] In some embodiments, a third buffer layer is provided between the first side surface of the partition and the second flexible layer, and between the second side surface of the partition and the second flexible layer.

[0037] The third buffer layer supports the second flexible layer on the separator and also acts as a buffer to protect the cells as they fall into the hopper. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the material box structure in an embodiment of this application;

[0039] Figure 2 This is a schematic diagram of the limiting column in an embodiment of this application from one viewpoint;

[0040] Figure 3 This is a structural schematic diagram of the limiting column in the embodiment of this application from another perspective;

[0041] Figure 4 This is a schematic diagram of the limiting beam in an embodiment of this application from one viewpoint.

[0042] Figure 5 This is a schematic diagram of the limiting beam in an embodiment of this application from another perspective;

[0043] Figure 6 This is a schematic diagram of the limiting beam after omitting the first flexible layer in the embodiments of this application, viewed from one angle.

[0044] Figure 7 This is a schematic diagram of the limiting beam with the first flexible layer omitted from the embodiments of this application, viewed from another perspective.

[0045] Figure 8 This is a schematic diagram of the partition structure in an embodiment of this application.

[0046] Figures 1 to 8 Includes:

[0047] Base plate 1;

[0048] Support block 2;

[0049] First flexible layer 3;

[0050] Limiting column 4;

[0051] Limiting beam 5: vertical beam 51, horizontal beam 52, baffle 53, mounting groove 54, clearance gap 55;

[0052] First buffer layer 6;

[0053] First clamping block 7;

[0054] Partition 8;

[0055] Second flexible layer 9;

[0056] Second buffer layer 10;

[0057] Third buffer layer 110;

[0058] Storage space A. Detailed Implementation

[0059] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0060] As described in the background section, when storing material boxes, they are generally stacked together. The problem that arises is that the bottom plate of the upper material box directly presses on the flexible layer at the top of the lower material box, causing wear and tear on the flexible layer of the lower material box.

[0061] To address this issue, this application provides a material box that prevents the bottom plate of the upper material box from contacting the flexible layer at the top of the limiting member of the lower material box when the material boxes are stacked together.

[0062] like Figure 1 As shown, the material box provided in this application includes a base plate 1 and a limiting member. The limiting member is arranged on the base plate 1 around the perimeter, and the base plate 1 and the limiting member together form a storage space A.

[0063] The limiting member is covered with a first flexible layer 3 on at least the inner side facing the storage space A and on the top of the limiting member.

[0064] The limiting member is provided with at least two support blocks 2, the support surfaces of the at least two support blocks 2 are located on the same horizontal plane, and the support surfaces of the support blocks 2 are higher than the first flexible layer 3 at the top of the limiting member.

[0065] The material box provided in this application has a support block 2 protruding from the top of its limiting member, which extends beyond the first flexible layer 3. Therefore, when storing the material box, the bottom plate of the upper material box rests on the support block 2 of the lower material box, thus preventing the bottom plate of the upper material box from contacting the top of the first flexible layer 3 of the limiting member of the lower material box and avoiding wear on the first flexible layer 3. The first flexible layer 3 can be made of modified Teflon material to protect the sheet.

[0066] Figure 1 As shown, optionally, the limiting component includes several limiting columns 4 and several limiting beams 5. The limiting columns 4 and limiting beams 5 are spaced apart around the perimeter to form a storage space A. The support block 2 is installed on the limiting columns 4 and / or limiting beams 5.

[0067] like Figures 2 to 3 As shown, the limiting post 4 is vertically installed on the base plate 1, and the inner surface and top of the limiting post 4 are covered with a first flexible layer 3. Figures 4 to 5 As shown, the limiting beam 5 includes at least two vertical beams 51 and at least one horizontal beam 52. The vertical beams 51 are vertically fixed to the base plate 1, and all the vertical beams 51 are arranged side by side and connected by the horizontal beam 52. A first flexible layer 3 is provided on the vertical beams 51, and the first flexible layer 3 covers at least the inner side and top of the corresponding vertical beam 51.

[0068] This application can use a combination of limiting columns 4 and limiting beams 5 to enclose the storage space A according to actual needs.

[0069] Of course, in other embodiments, only a number of limiting columns 4 may be used as limiting elements, and the storage space A may be formed by the number of limiting columns 4 spaced apart around the perimeter. Alternatively, only a number of limiting beams 5 may be used as limiting elements, and the storage space A may be formed by the number of limiting beams 5 spaced apart around the perimeter.

[0070] like Figure 1 As shown, optionally, storage space A is cuboid in shape. The storage box with cuboid storage space A can store rectangular sheets such as battery cells. Of course, by adjusting the number and arrangement of the limiting columns 4 and / or limiting beams 5, storage space A can also be made into other suitable shapes to store sheets of corresponding shapes.

[0071] For a material box with a rectangular storage space A, in order to ensure that the support block 2 at the top of the limiting member can provide stable support for the upper material box, support blocks 2 are provided at at least two opposite side walls of the storage space A. Figure 1 In the illustrated embodiment, all the limiting columns 4 and all the limiting beams 5 are equipped with support blocks 2 at their tops, ensuring that support blocks 2 are present on all four side walls of the storage space A. This allows the four edges of the bottom plate of the upper material box to be supported one-to-one on the support blocks 2 on the four side walls of the lower material box, ensuring stable support for the upper material box. Alternatively, support blocks 2 can be provided only on two or three opposite side walls of the storage space A. By adaptively adjusting the number and size of the support blocks 2, it can be ensured that these support blocks 2 can provide stable support for the upper material box.

[0072] Continue to refer to Figure 1 As shown, there are two limiting beams 5, which are arranged opposite to each other and respectively form two opposite first sidewalls of the storage space A. All the vertical beams 51 in the limiting beams 5 are arranged at intervals along a first direction (such as the X direction). The other two opposite second sidewalls of the storage space A are respectively composed of several (e.g., Figure 1 The five limiting columns 4 are arranged at intervals along the second direction (such as the Y direction), and the first direction is perpendicular to the second direction.

[0073] Optionally, the width of the limiting beam 5 along the first direction is greater than the width of the limiting column 4 along the second direction. This can further enhance the support strength of the limiting beam 5 and achieve the limiting effect by simply setting one limiting beam 5 on each of the opposite sides of the storage space A, making the structure of the material box simpler.

[0074] like Figures 2 to 3As shown, when the limiting component includes the limiting post 4, the support block 2 is detachably installed on the top of the limiting post 4, and the supporting surface of the support block 2 is higher than the first flexible layer 3 at the top of the corresponding limiting post 4. The first end of the first flexible layer 3 is fixed to the outer side of the limiting post 4 via the support block 2, and the first flexible layer 3 extends upward from the first end, passes around the top of the limiting post 4, and then adheres to the inner side and extends downward to the bottom of the inner side of the limiting post 4.

[0075] Among them, the support block 2 can not only support the bottom plate of the upper material box and prevent wear on the first flexible layer 3, but also fix the first end of the first flexible layer 3 to the outer side of the limiting column 4.

[0076] Optionally, a fixing groove is provided at the bottom of the inner side of the limiting column 4, and the second end of the first flexible layer 3 extends into the fixing groove. A pressure block is fitted in the fixing groove, and the pressure block presses against the second end of the first flexible layer 3. The pressure block and the second end of the first flexible layer 3 are locked and fixed in the fixing groove by locking screws.

[0077] Continue to refer to Figures 2 to 3 As shown, optionally, a first buffer layer 6 is provided between the inner side of the limiting column 4 and the first flexible layer 3. The first buffer layer 6 serves a buffering effect to cushion and protect the sheet as it falls into the material box. The first buffer layer 6 is made of a soft material, such as sponge or foam.

[0078] like Figures 4 to 7 As shown, when the limiting member includes the limiting beam 5, at least one upright beam 51 of the limiting beam 5 is provided with a support block 2 at its top, and the support surface of the support block 2 is higher than the first flexible layer 3 at the top of the corresponding upright beam 51.

[0079] A clearance gap 55 is provided between the support block 2 and the top of the corresponding upright beam 51. The bottom of the upright beam 51 is provided with a mounting groove 54, and a first clamping block 7 is installed in the mounting groove 54.

[0080] Optionally, the first flexible layer 3 is a strip structure, covering the inner and outer sides of the upright beam 51, with both ends of the first flexible layer 3 fixed in the mounting groove 54 by the first clamping block 7. Alternatively, the first flexible layer 3 can also be an annular strip, wrapping around the upright beam 51, with the bottom of the first flexible layer 3 and the first clamping block 7 fixed in the mounting groove 54.

[0081] As can be seen, by setting the mounting groove 54 and the first clamping block 7 at the bottom of the upright beam 51, the two ends or the bottom of the first flexible layer 3 can be fixed to ensure that the first flexible layer 3 is tensioned on the upright beam 51. By setting the clearance gap 55 between the support block 2 and the top of the upright beam 51, the first flexible layer 3 is bypassed, allowing the first flexible layer 3 to bypass the top of the upright beam 51 and thus cover the top of the upright beam 51.

[0082] like Figure 4 As shown, optionally, a second buffer layer 10 is provided between the inner side of the upright beam 51 in the limiting beam 5 and the first flexible layer 3. The second buffer layer 10 serves a buffering effect to cushion and protect the sheet as it falls into the material box. The second buffer layer 10 is made of a soft material, such as sponge or foam.

[0083] Continue to refer to Figure 5 As shown, optionally, when the limiting member includes the limiting beam 5, the limiting beam 5 also includes a baffle 53. The limiting beam 5 has two crossbeams 52, which are spaced apart in a third direction (such as the vertical direction). The limiting beam 5 is locked to the base plate 1 by one of the crossbeams 52 (such as the crossbeam at the bottom), and the other crossbeam 52 (such as the crossbeam in the middle) serves as the first handle. At least one baffle 53 is connected between the two crossbeams 52.

[0084] The crossbeam 52, which serves as the first handle, allows for pushing, pulling, lifting, and lowering of the material box, facilitating position adjustments. A baffle 53 is positioned between the two crossbeams 52 to prevent the user's hand from touching the sheet material stored in storage space A when gripping the first handle.

[0085] To meet different customer needs, one or more second handles can also be set separately on the base plate 1.

[0086] by Figure 4 Taking the limiting beam 5 as an example, in actual processing, the limiting beam 5 and the two support blocks 2 on it can be integrally processed by injection molding. The processing is convenient and the cost is low. After the limiting beam 5 is installed on the bottom plate 1, it is easier to ensure that the support surfaces of the two support blocks 2 are on the same horizontal plane, thereby ensuring stable support for the bottom plate 1 of the upper material box.

[0087] like Figure 1 As shown, optionally, the installation positions of the limiting column 4 and the limiting beam 5 on the base plate 1 are adjustable, so that the size of the storage space A can be adjusted. This allows the material box in this embodiment to store sheets of different sizes, improving the compatibility of the material box.

[0088] For example, targeting Figure 1As shown, two limiting beams 5 are arranged opposite each other, forming two opposite first sidewalls of storage space A. All the vertical beams 51 in the limiting beams 5 are spaced apart along a first direction (e.g., the X direction). The other two opposite second sidewalls of storage space A are formed by several limiting columns 4 spaced apart along a second direction (e.g., the Y direction). A first mounting groove extending along the first direction is provided on the base plate 1 at the position corresponding to each limiting column 4. Each limiting column 4 is installed in its corresponding first mounting groove and can slide along the groove to adjust its position. After the limiting column 4 is adjusted to its position, it can be locked to the base plate 1 with screws. Similarly, a first mounting groove extending along the second direction is provided on the base plate 1 at the position corresponding to the limiting beam 5. The limiting beam 5 is installed in its corresponding second mounting groove and can slide along the groove to adjust its position. After the limiting beam 5 is adjusted to its position, it can be locked to the base plate 1 with screws.

[0089] like Figure 1 and Figure 8 As shown, optionally, the material box includes several partitions 8, which are disposed on the base plate 1 located within the storage space A, and the partitions 8 divide the storage space into at least two (e.g., Figure 1 The four storage sub-spaces are as follows. The top of the partition 8 and the first and second side surfaces of the storage sub-spaces facing both sides are covered with a second flexible layer 9. The support surface of the support block 2 is higher than the second flexible layer 9 at the top of the partition 8. The second flexible layer 9 may be made of modified Teflon material to protect the sheet.

[0090] By setting the partition 8, the material box has at least two storage sub-spaces, thereby increasing the storage space and allowing for the categorized storage of tablets in different storage sub-spaces. Since the two opposite sides of the partition 8 are covered with a second flexible layer 9, the partition 8 makes soft contact with the edges of the tablets stored in the storage sub-spaces on both sides, thus avoiding damage to the tablets.

[0091] Furthermore, since the support surface of the support block 2 is higher than the second flexible layer 9 at the top of the partition 8, the second flexible layer 9 at the top of the partition 8 will not come into contact with the stacked boxes above.

[0092] Optionally, the mounting position of the partition 8 on the base plate 1 is adjustable, so that the size of the storage sub-space is adjustable, thereby enabling the storage sub-space to store sheets of different sizes and improving the compatibility of the material box. For example... Figure 1As shown, similarly, a third mounting groove extending in the second direction can be provided on the base plate 1 at the position corresponding to the partition 8. The partition 8 is installed in the corresponding third mounting groove and can slide along the third mounting groove to adjust its position. After the partition 8 is slid into place, it can be locked to the base plate 1 with screws, thereby making the size of each storage sub-space adjustable. Alternatively, the number and size of the storage sub-spaces can be adjusted by removing the partition 8.

[0093] like Figure 8 As shown, optionally, a third buffer layer 110 is provided between the first side surface of the partition 8 and the second flexible layer 9, and between the second side surface of the partition 8 and the second flexible layer 9.

[0094] The third buffer layer 110 supports the second flexible layer 9 on the separator 8 and also acts as a buffer to protect the cells and other components as they fall into the hopper. The third buffer layer 110 is made of a soft material, such as sponge or foam.

[0095] The application has been described in sufficient detail and with certain specificities above. Those skilled in the art should understand that the descriptions in the embodiments are merely exemplary, and all changes made without departing from the true spirit and scope of this application should fall within the protection scope of this application. The scope of protection claimed in this application is defined by the claims, and not by the above descriptions in the embodiments.

Claims

1. A material box, characterized in that, The material box includes a base plate and a limiting component, wherein: The limiting member is provided around the perimeter of the base plate, and the base plate and the limiting member together form a storage space; The limiting member is covered with a first flexible layer on at least the inner side facing the storage space and on the top of the limiting member. The limiting member is provided with at least two support blocks, the support surfaces of the at least two support blocks are located on the same horizontal plane, and the support surfaces of the support blocks are higher than the first flexible layer at the top of the limiting member.

2. The material box as described in claim 1, characterized in that, The limiting component includes a plurality of limiting columns, which are vertically installed on the base plate. The inner side and top of the limiting columns are covered with the first flexible layer. And / or, the limiting member includes a plurality of limiting beams, the limiting beams including at least two vertical beams and at least one horizontal beam, the vertical beams being vertically fixed to the base plate, all the vertical beams being arranged side by side and connected by the horizontal beams, the vertical beams being provided with the first flexible layer, the first flexible layer at least covering the inner side and top of the corresponding vertical beam.

3. The material box as described in claim 2, characterized in that, When the limiting component includes a plurality of the limiting columns, the limiting columns are spaced apart around the perimeter to form the storage space, and the support block is installed on the limiting columns; When the limiting member includes a plurality of the limiting beams, the limiting beams are spaced apart around the perimeter to form the storage space, and the support block is installed on the limiting beams; When the limiting component includes a plurality of limiting columns and a plurality of limiting beams, the limiting columns and the limiting beams are spaced apart around the perimeter to form the storage space, and the support block is installed on the limiting columns and / or the limiting beams. The storage space is rectangular in shape, and the support block is provided on at least two opposite sidewalls of the storage space.

4. The material box as described in claim 2, characterized in that, When the limiting member includes the limiting post, the support block is detachably installed on the top of the limiting post. The support surface of the support block is higher than the first flexible layer at the top of the corresponding limiting post. The first end of the first flexible layer is fixed to the outer side of the limiting post via the support block. The first flexible layer extends upward from the first end, passes around the top of the limiting post, and then adheres to the inner side and extends downward to the bottom of the inner side of the limiting post.

5. The material box as described in claim 2, characterized in that, When the limiting member includes the limiting post, a first buffer layer is provided between the inner side of the limiting post and the first flexible layer, and the first buffer layer is used to support the first flexible layer.

6. The material box as described in claim 2, characterized in that, When the limiting member includes the limiting beam, at least one of the vertical beams is provided with the support block at its top, and the support surface of the support block is higher than the first flexible layer at the top of the corresponding vertical beam.

7. The material box as described in claim 6, characterized in that, A clearance gap is provided between the support block and the top of the corresponding vertical beam; The bottom of the vertical beam is provided with an installation groove, and a first clamping block is installed in the installation groove; The first flexible layer covers the inner and outer sides of the upright beam and passes through the clearance gap. The two ends or the bottom of the first flexible layer are fixed in the mounting groove by the first clamping block.

8. The material box as described in claim 2, characterized in that, When the limiting member includes the limiting beam, a second buffer layer is provided between the inner side of the vertical beam in the limiting beam and the first flexible layer.

9. The material box as described in claim 2, characterized in that, When the limiting component includes several limiting columns and several limiting beams, there are two limiting beams. The two limiting beams are arranged opposite each other and respectively constitute two opposite first sidewalls of the storage space. All the columns in the limiting beams are arranged at intervals along a first direction. The other two opposite second sidewalls of the storage space are respectively constituted by several limiting columns arranged at intervals along a second direction. The first direction is perpendicular to the second direction.

10. The material box as described in claim 9, characterized in that, The width of the limiting beam along the first direction is greater than the width of the limiting column along the second direction.

11. The material box as described in claim 2, characterized in that, When the limiting component includes the limiting beam, the limiting beam also includes a baffle. The limiting beam has two crossbeams, which are spaced apart in a third direction. The limiting beam is locked to the base plate by one of the crossbeams, and the other crossbeam serves as a first handle. At least one baffle is connected between the two crossbeams.

12. The material box as described in claim 2, characterized in that, The installation position of the limiting column and / or several limiting beams on the base plate is adjustable so that the size of the storage space can be adjusted.

13. The material box as described in claim 2, characterized in that, The material box includes several partitions, which are disposed on the base plate located within the storage space. All the partitions divide the storage space into at least two storage sub-spaces. The top of the partition and the first and second side surfaces of the storage sub-spaces facing both sides are covered with a second flexible layer. The support surface of the support block is higher than the second flexible layer at the top of the partition.

14. The material box as described in claim 13, characterized in that, The partition is installed in an adjustable position on the base plate so that the size of the storage subspace is adjustable.

15. The material box as described in claim 13, characterized in that, A third buffer layer is provided between the first side surface of the partition and the second flexible layer, and between the second side surface of the partition and the second flexible layer.

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