A tray

Abstract

This utility model discloses a pallet, belonging to the field of pallets. The pallet of this utility model, by setting the hardness of the inner limiting side of the limiting part and the supporting side of the supporting part to be less than the hardness of the substrate, and simultaneously providing an inner through hole on the substrate corresponding to the accommodating area, with the diameter of the inner through hole or the diameter of the inscribed circle ≤10mm, thereby ensuring strength and protective performance while reducing systematic errors in the production process and reducing human errors in production and transportation. Limiting the diameter of the inner through hole ensures the overall strength of the pallet.

Description

Technical Field

[0001] This utility model relates to the field of tray technology, and more specifically, to a tray in the field of semiconductor technology. Background Technology

[0002] Trays are indispensable carriers in the chip packaging, testing, and placement processes, accompanying the entire chip manufacturing process. In the semiconductor industry, trays mainly refer to plastic trays used for packaging, testing, and transporting integrated circuits (ICs), also known as IC trays or electronic chip trays.

[0003] Trays play a crucial role in semiconductor packaging and testing, protecting chips and facilitating automated testing and installation. They typically require characteristics such as anti-static properties, high-temperature resistance, and dimensional stability. With the rapid development of the semiconductor industry, the IC tray market is also growing. Trays play a vital role in the semiconductor industry, and market demand grows in tandem with the industry's growth. Manufacturers need to continuously innovate and improve materials and manufacturing processes to meet the industry's demand for high-performance trays.

[0004] However, due to the lack of proper design, existing pallets are prone to causing system errors during use, especially damaging components. Therefore, improvements to existing pallets are needed. Utility Model Content

[0005] 1. Technical problem to be solved by the utility model

[0006] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a tray. By setting the hardness of the inner side of the limiting part and the supporting side of the supporting part to be less than the hardness of the substrate, and providing an inner through hole on the substrate corresponding to the accommodating area, with the diameter of the inner through hole or the diameter of the inner circle ≤10mm, the system error in the production process and the human error in the production and transportation process are reduced while ensuring strength and protective performance.

[0007] 2. Technical Solution

[0008] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0009] This utility model provides a tray, including

[0010] A substrate, comprising a first surface and a second surface, wherein the hardness of the substrate is H1;

[0011] Positioning units are provided at positions corresponding to the first and second surfaces. Each positioning unit is provided with a limiting part and a supporting part, and the height of the limiting part is greater than the height of the first supporting part.

[0012] The limiting part encloses and forms a receiving area, and the supporting part is located at the edge of the receiving area; and the hardness of the inner limiting side of the limiting part is H2, and the hardness of the supporting side of the supporting part is H3; then H1 > H2; and H1 > H3;

[0013] At least one accommodating area has an internal through hole on its substrate, which is a circular through hole and / or a non-circular through hole; wherein the maximum diameter of the circular through hole is R1, and R1≤10mm; and the maximum diameter of the inscribed circle of the non-circular through hole is R2, and R2≤10mm.

[0014] By using the above technical solution, the hardness of the inner side of the limiting part and the supporting side of the supporting part is set to be less than the hardness of the substrate. At the same time, an inner through hole is provided on the substrate corresponding to the accommodating area. The diameter of the inner through hole or the diameter of the inscribed circle is ≤10mm. This ensures strength and protective performance while reducing systematic errors in the production process and reducing human errors in the production and transportation process. The limited diameter of the inner through hole can ensure the overall strength of the pallet. An excessively large diameter will weaken the strength of the pallet.

[0015] Preferably, the projected area of ​​the accommodating region on the substrate is S1, and the total area of ​​the internal through holes within the accommodating region is S2.

[0016] If f1 = S1 / S2, then 1 / 10S1 ≤ f1 ≤ 4 / 5S1; or

[0017] 1 / 3S1≤f1≤3 / 5S1.

[0018] The above technical solution reduces the material usage rate of internal through holes, but it cannot completely fill the substrate. Better load-bearing capacity is achieved through a part of the physical structure, so the area ratio of internal through holes needs to be limited.

[0019] Preferably, the non-circular through hole includes one or more of the following shapes: polygonal, elliptical, fan-shaped, and irregular.

[0020] The above technical solutions allow for different settings of the specific shape of the circular through hole, depending on the actual situation or load requirements.

[0021] Preferably, the edges of the non-circular through-hole of the polygon are provided with arcs.

[0022] Through the above technical solution, the arc part can improve the overall tear resistance when bearing load at the edge connection part during the load-bearing process.

[0023] Preferably, the substrate outside the accommodating area is provided with an external through hole, which is a circular through hole and / or a non-circular through hole; wherein, the maximum diameter of the circular through hole is R1, R1≤10mm; and the maximum diameter of the inscribed circle of the non-circular through hole is R2, R2≤10mm.

[0024] The above technical solution also limits the specific size of the corresponding external through hole to avoid accidental contact or touching during the picking process.

[0025] Preferably, the area of ​​the substrate outside the accommodating area is S3, and the total area of ​​the external vias outside the accommodating area is S4;

[0026] If f2 = S3 / S4, then f2 ≤ 1 / 2S4.

[0027] Preferably, the accommodating area is rectangular or rectangular, with point P as its geometric center, and the internal through holes of the accommodating area are centrally symmetrically distributed with respect to point P.

[0028] Through the above technical solution, the load-bearing capacity of the accommodating area itself can be more uniform, and the distribution of the internal through holes itself forms a better support effect and firmness.

[0029] Preferably, the minimum distance between the edge of the inner through hole and the side of the inner side of the limiting part is D1, then D1≥1.5mm; or D1≥2mm; or D1≥3mm.

[0030] Through the above technical solution, the distance between the limiting part and the non-solid part ensures the basic strength of the limiting part 2 and the basic support strength of the substrate within the accommodating area.

[0031] Preferably, the limiting part and / or the supporting part have protrusions inside, the protrusions are fixedly connected to the substrate, and the outer side of the protrusions is wrapped with flexible material.

[0032] Through the above technical solution, when there is a protrusion inside the limiting part and the supporting part, the pre-positioning effect can be achieved, the forming effect in the process of wrapping flexible materials can be improved, and the forming effect can be improved in the wrapping process by forming roughness on the outer surface of the protrusion.

[0033] Preferably, an adsorption zone is provided at the geometric center of the accommodating area, and no internal through holes are provided in the adsorption zone.

[0034] The above technical solution forms a complete entity, which facilitates the picking function applicable to the transfer suction cup.

[0035] Preferably, the adsorption zone is centered at point P, which is the geometric center of the accommodating area, and an auxiliary tangent circle M is drawn along the edge of the inner through hole near the adsorption zone. The diameter of the auxiliary tangent circle M is R3, where R3 ≥ 10 mm.

[0036] Preferably, at least one receiving area is not provided with an internal through hole, and the receiving areas at both ends of the substrate are provided with internal through holes.

[0037] Preferably, the main body thickness of the substrate is 1.2 to 1.80 mm, and the edge height of the substrate is 10 to 15 mm.

[0038] Preferably, the inner side of the limiting part and the supporting side of the supporting part have at least one layer of flexible material; or

[0039] The limiting part and the supporting part are made of flexible material.

[0040] Preferably, the flexible material is TPU, TPE, or a silicone layer.

[0041] Preferably, the maximum diameter R1 of the circular through hole is 3mm ≤ R1 ≤ 8mm; and / or the diameter of the largest inscribed circle of the non-circular through hole is R2, 3mm ≤ R2 ≤ 8mm.

[0042] Preferably, the maximum diameter R1 of the circular through hole is 5mm ≤ R1 ≤ 8mm; and / or the diameter of the largest inscribed circle of the non-circular through hole is R2, 5mm ≤ R2 ≤ 8mm.

[0043] Preferably, the limiting portion includes a first-direction limiting portion and a second-direction limiting portion, and the first-direction limiting portion and the second-direction limiting portion are perpendicular to each other;

[0044] A first directional limiting part and a second directional limiting part are provided at any corner of the accommodating area, and the first directional limiting part and the second directional limiting part are connected by a connecting part.

[0045] Through the above technical solution, the connecting part can make the first direction limiting part and the second direction limiting part tend to return to their original state after expansion, so that the first direction limiting part and the second direction limiting part have a common limiting effect.

[0046] Preferably, the support portion includes a first-direction support portion and a second-direction support portion, wherein the first-direction support portion and the second-direction support portion are perpendicular to each other;

[0047] A first directional support and a second directional support are provided at any corner of the accommodating area. The first directional support is parallel to and connected to the first directional limiting part. The second directional support is parallel to and connected to the second directional limiting part.

[0048] Preferably, the first direction limiting portion and the second direction limiting portion are not connected at the second surface.

[0049] Through the above technical solution, this asymmetrical arrangement allows for a larger load-bearing structure on the first surface, which bears the main load, while the second surface, primarily used for secondary positioning during closing, is not suitable for excessive connection area. The first and second directional limiting portions on the second surface have more flexible movement and avoidance capabilities, preventing any impact on the device. Simultaneously, this arrangement saves material and makes it easier for users to distinguish between the first and second surfaces.

[0050] 3. Beneficial effects

[0051] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0052] This invention provides good protection for the chip by setting the hardness of the inner limiting side of the limiting part and the supporting side of the supporting part to be less than the hardness of the substrate. The inner limiting side of the limiting part and the supporting side of the supporting part have at least one layer of flexible material; or the limiting part and the supporting part are made of flexible material. Even if there is shaking, the chip still has a good protective effect. Simultaneously, an inner through-hole is provided on the substrate corresponding to the accommodating area. The diameter of the inner through-hole or the diameter of the inscribed circle is ≤10mm. This prevents operators' fingers, machine arms, or operating suction cups from directly passing through the inner through-hole during transportation and handling, thus avoiding damage to the device caused by human error or mechanical parts. It also prevents the device from being pushed out of the accommodating area. This ensures strength and protective performance while reducing systematic errors in the production process and reducing human error during production and transportation. The limited diameter of the inner through-hole ensures the overall strength of the tray; an excessively large diameter would weaken the tray's strength. Attached Figure Description

[0053] Figure 1 This is a schematic diagram of the first surface (front) of the tray;

[0054] Figure 2 This is a schematic diagram of the second surface (back side) of the tray;

[0055] Figure 3 This is an enlarged schematic diagram of the first surface (front) of the tray;

[0056] Figure 4 Schematic diagram of a tray with an adsorption area;

[0057] Figure 5 This is a schematic diagram of the shape of a non-circular through hole;

[0058] Figure 6 A schematic diagram showing that all accommodating areas have through holes. Detailed Implementation

[0059] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments.

[0060] The structures, proportions, and sizes illustrated in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art in understanding and reading the invention. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed in this utility model. Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity and not intended to limit the scope of implementation. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0061] Example 1

[0062] Combination Figures 1-6 A tray according to this embodiment includes a substrate 001, the substrate 001 including a first surface 010 (e.g., Figure 1 As shown, it can also be called the front surface) and the second surface 020 (as shown). Figure 2 As shown (also referred to as the back side), the hardness of substrate 001 is H1; positioning units 110 are provided at positions corresponding to the first surface 010 and the second surface 020, such as... Figure 1 or Figure 2 In the dotted area, the tray can be provided with 3, 4 or 6 positioning units 110; the positioning unit 110 is provided with a limiting part 210 and a support part 220, and the height of the limiting part 210 is greater than the height of the first support part 220. In this embodiment, the limiting part 210 is used to limit the main contact device, and the limiting part 210 is mainly used to provide overall support strength. The two are connected and share the force and load.

[0063] The limiting part 210 encloses and forms a receiving area 002, such as Figure 1 In the shaded area, the support portion 220 is located at the edge of the accommodating area 002; and the hardness of the inner limiting side 210a of the limiting portion 210 is H2, while the hardness of the supporting side 220a of the support portion 220 is H3; therefore, H1 > H2; and H1 > H3. That is to say, compared to the substrate 001, the inner limiting side 210a and the supporting side 220a are softer, which protects the device.

[0064] The substrate 001 is made of one of MPPO, PAS, PPE, or ABS. The inner limiting side 210a of the limiting portion 210 and the supporting side 220a of the supporting portion 220 are made of flexible materials, such as TPU, TPE, or a silicone layer. This provides good protection for the chip, ensuring good protection even during shaking. It also guarantees the overall strength of the substrate 001. In other embodiments, H3 can be greater than H2, allowing the supporting side 220a of the supporting portion 220 to provide better stable support.

[0065] The specific setup method is as follows:

[0066] The limiting inner side 210a of the limiting portion 210 and the supporting side 220a of the supporting portion 220 each have at least one layer of flexible material. That is, the limiting portion 210 and the supporting portion 220 each have a protrusion (not shown in the figure) provided on the substrate 001 inside, and a layer of flexible material is wrapped around the protrusion; or the limiting portion 210 and the supporting portion 220 are made of flexible material, thereby achieving a supporting function. When the limiting portion 210 and the supporting portion 220 each have a protrusion inside, a pre-positioning effect can be achieved, improving the molding effect during the process of wrapping the flexible material.

[0067] At least one accommodating region 002 has an internal through-hole 310 on its substrate 001. The internal through-hole 310 is a circular through-hole 301 and / or a non-circular through-hole 302. The maximum diameter R1 of the circular through-hole (not shown in the figure) is ≤10mm. The maximum diameter of the inscribed circle of the non-circular through-hole 302 is R2, ≤10mm. The aforementioned maximum diameter refers to the size corresponding to the circular through-hole with the largest diameter, even if multiple diameters exist.

[0068] Preferably, the maximum diameter R1 of the circular through hole 301 is 3mm ≤ R1 ≤ 8mm; and / or the diameter of the largest inscribed circle of the non-circular through hole 302 is R2, 3mm ≤ R2 ≤ 8mm. More preferably, the maximum diameter R1 of the circular through hole 301 is 5mm ≤ R1 ≤ 8mm; and / or the diameter of the largest inscribed circle of the non-circular through hole 302 is R2, 5mm ≤ R2 ≤ 8mm. In this embodiment, the inner through hole 310 is a circular through hole 301 and / or a non-circular through hole 302; specifically, the maximum diameter R1 of the circular through hole 301 can be selected as a circular through hole 301 of 1, 3, 5, 6, 7, 8, 9, or 10mm; the diameter of the largest inscribed circle of the non-circular through hole 302 is R2, which can be a non-circular through hole 302 of 1, 3, 5, 6, 7, 8, 9, or 10mm. This prevents operators' fingers, machine arms, or mechanical parts such as suction cups from directly passing through the inner through hole during transportation and handling, thus avoiding damage to the device caused by human error or mechanical parts. It also prevents the device from being pushed out of the containment area, ensuring strength and protection performance while reducing systematic errors in the production process and reducing human errors in production and transportation.

[0069] The present invention provides a tray in which the projected area of ​​the accommodating region 002 on the substrate 001 is S1, and the total area of ​​the inner through holes 300 in the accommodating region 002 is S2.

[0070] Since f1 = S1 / S2, then 1 / 10S1 ≤ f1 ≤ 4 / 5S1; or 1 / 3S1 ≤ f1 ≤ 3 / 5S1. This ensures that the pallet has high strength while also providing through holes with a relatively large area. The through holes not only reduce the material used in the pallet but also significantly reduce its weight, thereby lowering both production and transportation costs. It is worth noting that since the pallet is repeatedly used and requires cleaning and drying each time it is reused, setting a suitable hole area can greatly improve the efficiency of the cleaning solution flow during the cleaning process, thus enhancing the effectiveness of subsequent drying and cleaning. The ratio of the total area S2 of the internal through hole 300 is limited so that the hole area of ​​the substrate 001 located in the receiving area 002 is relatively larger, but the substrate 001 outside the receiving area 002 is basically a solid structure, which ensures the structural strength of the outer substrate 001 part during the picking process. The main stress part is the outer solid plate, avoiding the reduction of the overall structural strength.

[0071] The substrate 001 outside the accommodating area 002 is provided with an external through hole 320, which is a circular through hole (not shown in the figure) and / or a non-circular through hole 302; wherein, the maximum diameter of the circular through hole 301 is R1, R1≤10mm; the maximum diameter of the inscribed circle of the non-circular through hole 302 is R2, R2≤10mm. The selection method of the hole diameter of the circular through hole 301 and the non-circular through hole 302 outside the accommodating area 002 can refer to the circular through hole 301 and the non-circular through hole 302 in the accommodating area 002. The area of ​​the substrate 001 outside the accommodating area 002 is S3, and the total area of ​​the external through holes 320 outside the accommodating area 002 is S4; f2=S3 / S4, then f2≤1 / 2S4, the purpose of which is to improve strength. Since the substrate 001 in the accommodating area 002 is responsible for supporting the overall strength of the entire tray, the proportion of its hole area should be smaller than that of the substrate 001 inside the accommodating area 002.

[0072] It is worth noting that, under normal circumstances, the substrate 001 outside the accommodating area 002 is provided with an external through hole 320. In order to ensure the structural strength of the substrate 001, it will be provided near the side of the substrate 011 or towards both ends of the substrate 001, so that the middle part of the substrate 001 is as continuous as possible, and the support strength is guaranteed during transportation or picking.

[0073] The non-circular through-hole 302 of this utility model includes one or more of the following shapes: polygonal, elliptical, fan-shaped, and irregular. The non-circular through-hole 302 with polygonal shapes has an arc 3021 at the connection between its edges. Figure 5 As shown, this invention is used to increase the tear resistance of the joints when the perforated body is subjected to force, thereby improving its firmness during repeated use. The accommodating area 002 of this invention is rectangular or rectangular, with its geometric center at point P. The internal through holes 300 of the accommodating area 002 are centrally symmetrically distributed with respect to point P to obtain a more uniform structural support force.

[0074] In this utility model, the minimum distance between the edge of the inner through hole 310 and the side of the limiting inner side 210a of the limiting part 210 is D1, where D1 ≥ 1.5 mm; or D1 ≥ 2 mm; or D1 ≥ 3 mm. Figure 3 As shown; thus ensuring the basic strength of the limiting part 210 and the basic support strength of the substrate 001 in the accommodating area 002.

[0075] In general, the diameter limits of the inner through hole 310 and the outer through hole 320 are also to ensure the area ratio of the holes, specifically to ensure the overall strength of the tray. If there are excessively large through holes, the overall strength of the tray will be weakened. In conjunction with the limiting part 210 and the supporting part 220, the device can be protected while ensuring a certain structural strength. At the same time, the presence of the inner through hole 310 and the outer through hole 320 has the effect of reducing the overall weight.

[0076] Preferably, the minimum distance between the edge of the inner through hole 310 and the side of the support side 220a of the support portion 220 is also D1. This will similarly limit the basic strength of the support portion 220. Specifically, during the support process, the limiting portion 210 and the support portion 220 have a certain solid connection portion near the outer side of the receiving area 002. By limiting the minimum distance, it is ensured that the inner portion of the limiting portion 210 and the support portion 220 has at least a certain distance of solid portion. This avoids the situation where, when the whole is subjected to force, if the extension length of the inner solid portion is insufficient, it will cause the limiting portion 210 and the support portion 220 to tilt inward, which may result in a clamping force on the device.

[0077] Reference Figure 4 This invention provides an adsorption area 111 at the geometric center of the accommodating area 002. This adsorption area 111 does not have an internal through-hole 310; that is, it is a complete solid part. An auxiliary tangent circle M is drawn around the geometric center of the accommodating area 002, centered at point P, along the edge near the internal through-hole 310 of the adsorption area 111. The diameter of this auxiliary tangent circle M is R3, where R3 ≥ 10 mm. Thus, during use, the adsorption area 111 provides an adsorption position for the transfer suction cup, facilitating the transfer and movement of the tray. Simultaneously, the solid adsorption area 111 in the middle can also connect to the solid parts outside the accommodating area through the solid parts located at the edge of the internal through-hole 310, forming a stable supporting force in the middle area.

[0078] This invention allows for the absence of internal through-holes 310 in at least one accommodating region 002, such as the accommodating region 002 located in the middle, while the accommodating regions 002 at both ends of the substrate 001 are provided with internal through-holes 310. Figure 1 , 2 Or as shown in Figure 4, of course, all can be configured with through holes, such as... Figure 6 As shown, internal through holes 310 are provided in all accommodating areas 002. The main body thickness of the substrate 001 of this utility model is 1.2-1.8 mm, and the height of the edge of the substrate 001 is 10-15 mm. No internal through holes 310 are provided in the accommodating area 002 in the middle position, so that the middle part of the substrate 001 serves as a center to provide better main support points in all directions.

[0079] The limiting part 210 of this utility model includes a first-direction limiting part 211 and a second-direction limiting part 212. The first-direction limiting part 211 and the second-direction limiting part 212 are perpendicular to each other. In other embodiments, the included angle between them can also be other angles, not just right angles. The first-direction limiting part 211 and the second-direction limiting part 212 are provided at any corner of the accommodating area 002, and the corresponding first-direction limiting part 211 and the second-direction limiting part 212 are connected by a connecting part 230, thereby improving the overall connection strength and the effectiveness of the limiting part 211, so as to avoid deformation or cracking of the limiting part 210. At the same time, the connecting part 230 enables the first-direction limiting part 211 and the second-direction limiting part 212 to tend to return to their original state after expansion, so that the first-direction limiting part 211 and the second-direction limiting part 212 have a common and linked limiting effect.

[0080] The support portion 220 of this utility model includes a first direction support portion 221 and a second direction support portion 222, which are perpendicular to each other. A first direction support portion 221 and a second direction support portion 222 are respectively provided at any corner of the accommodating area 002. The first direction support portion 221 is parallel to and connected to the first direction limiting portion 211. The second direction support portion 222 is parallel to and connected to the second direction limiting portion 212.

[0081] In this embodiment, a multi-directional limiting part 210 and a support part 220 are provided on the first surface 010, while only a single limiting part 210 and a support part 220 are provided on the second surface 020. That is, the corners of the accommodating area 002 are not connected by a connecting part 230. The reason for this asymmetrical arrangement is that the first surface 010, which bears the main load, requires a larger load-bearing structure. Since the second surface 220 is mainly used for secondary limiting during closing, it is not suitable for excessive connection area to avoid affecting the device. During contact, the single-unit limiting part 210 and support part 220 have greater adaptability and can avoid additional impact on the device already placed on the lower tray. This arrangement also saves material and makes it easier for the user to distinguish between the first surface 010 and the second surface 020, i.e., to differentiate the front and back.

[0082] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A tray, characterized in that: include The substrate (001) includes a first surface (010) and a second surface (020), and the hardness of the substrate (001) is H1. Positioning units (110) are provided at positions corresponding to the first surface (010) and the second surface (020). The positioning units (110) are provided with a limiting part (210) and a supporting part (220), and the height of the limiting part (210) is greater than the height of the first supporting part (220). The limiting part (210) encloses and forms a receiving area (002), and the supporting part (220) is located at the edge of the receiving area (002); and the hardness of the limiting inner side (210a) of the limiting part (210) is H2, and the hardness of the supporting side (220a) of the supporting part (220) is H3; then H1 > H2; and H1 > H3; At least one receiving area (002) has an internal through hole (310) on its substrate (001), the internal through hole (310) being a circular through hole (301) and / or a non-circular through hole (302); wherein the maximum diameter R1 of the circular through hole (301) is R1≤10mm; and the maximum diameter of the inscribed circle of the non-circular through hole (302) is R2, R2≤10mm.

2. A pallet according to claim 1, characterized in that: The projected area of ​​the accommodating region (002) on the substrate (001) is S1, and the total area of ​​the internal through holes (300) in the accommodating region (002) is S2. If f1 = S1 / S2, then 1 / 10S1 ≤ f1 ≤ 4 / 5S1; or 1 / 3S1≤f1≤3 / 5S1.

3. A pallet according to claim 1, characterized in that: Non-circular through holes (302) include one or more of the following shapes: polygonal, elliptical, fan-shaped, and irregular.

4. A pallet according to claim 3, characterized in that: The non-circular through hole (302) of the polygon has an arc (3021) at the connection between the edges.

5. A pallet according to claim 1, characterized in that: The substrate (001) outside the accommodating area (002) is provided with an external through hole (320), which is a circular through hole (301) and / or a non-circular through hole (302); wherein, the maximum diameter R1 of the circular through hole (301) is R1≤10mm; and the maximum diameter of the inscribed circle of the non-circular through hole (302) is R2≤10mm.

6. A pallet according to claim 5, characterized in that: The area of ​​the substrate (001) outside the accommodating region (002) is S3, and the total area of ​​the external through-hole (320) outside the accommodating region (002) is S4; If f2 = S3 / S4, then f2 ≤ 1 / 2S4.

7. A pallet according to claim 5, characterized in that: The accommodating area (002) is rectangular or rectangular, with point P as its geometric center. The internal through holes (300) of the accommodating area (002) are centrally symmetrically distributed with point P as the base point.

8. A pallet according to claim 1, characterized in that: The minimum distance between the edge of the inner through hole (310) and the side of the limiting inner side (210a) of the limiting part (210) is D1, then D1≥1.5mm; or D1≥2mm; or D1≥3mm.

9. A tray according to claim 1, characterized in that: The limiting part (210) and / or the supporting part (220) have protrusions inside, the protrusions are disposed on the substrate (001), and the outer side of the protrusions is wrapped with a flexible material.

10. A tray according to claim 1, characterized in that: An adsorption area (111) is provided at the geometric center of the accommodating area (002), and no internal through hole (310) is provided in the adsorption area (111).

11. A tray according to claim 10, characterized in that: The adsorption region (111) is drawn with point P as the geometric center of the accommodating region (002) as the center, and an auxiliary tangent circle M is drawn along the edge of the inner through hole (310) near the adsorption region (111). The diameter of the auxiliary tangent circle M is R3, and R3≥10mm.

12. A pallet according to claim 1, characterized in that: At least one receiving area (002) is not provided with an internal through hole (310), and the receiving areas (002) at both ends of the substrate (001) are provided with internal through holes (310).

13. A tray according to any one of claims 1-12, characterized in that: The substrate (001) has a main body thickness of 1.2 to 1.80 mm and an edge height of 10 to 15 mm.

14. A tray according to any one of claims 1-12, characterized in that: The limiting inner side (210a) of the limiting part (210) and the supporting side (220a) of the supporting part (220) have at least one layer of flexible material; or The limiting part (210) and the supporting part (220) are made of flexible material.

15. A pallet according to claim 14, characterized in that: The flexible material is TPU, TPE, or a silicone layer.

16. A pallet according to any one of claims 1-12, characterized in that: The maximum diameter R1 of the circular through hole (301) is 3mm ≤ R1 ≤ 8mm; and / or The diameter of the largest inscribed circle of the non-circular through hole (302) is R2, where 3mm ≤ R2 ≤ 8mm.

17. A pallet according to claim 16, characterized in that: The maximum diameter R1 of the circular through hole (301) is 5mm ≤ R1 ≤ 8mm; and / or The diameter of the largest inscribed circle of the non-circular through hole (302) is R2, where 5mm ≤ R2 ≤ 8mm.

18. A tray according to any one of claims 1-12, characterized in that: The limiting part (210) includes a first direction limiting part (211) and a second direction limiting part (212), and the first direction limiting part (211) and the second direction limiting part (212) are perpendicular to each other; A first direction limiting part (211) and a second direction limiting part (212) are provided at any corner of the accommodating area (002), and the first direction limiting part (211) and the second direction limiting part (212) are connected by a connecting part (230).

19. A pallet according to claim 18, characterized in that: The support portion (220) includes a first direction support portion (221) and a second direction support portion (222), wherein the first direction support portion (221) and the second direction support portion (222) are perpendicular to each other; A first directional support portion (221) and a second directional support portion (222) are provided at any corner of the accommodating area (002). The first directional support portion (221) is arranged parallel to the first directional limiting portion (211) and is connected to the first directional limiting portion (211). The second directional support portion (222) is arranged parallel to the second directional limiting portion (212) and is connected to the second directional limiting portion (212).

20. A pallet according to claim 19, characterized in that: Located at the second surface 020, the first direction limiting part (211) and the second direction limiting part (212) are not connected.

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