CN203006137U - tray - Google Patents

Abstract

The utility model relates to a tray, a plurality of plate-like parts can be accomodate at its upper surface to can be through range upon range of with a plurality of trays, and accommodate a plurality of plate-like parts, the characterized in that of tray: the upper surface of the tray is provided with: a vertical wall for limiting the plate-shaped component to move along the tray surface direction; and a plurality of supporting protrusions for supporting the plate-like member at the edge portion of the plate-like member, wherein a plurality of stopper protrusions are provided on the lower surface of the tray in correspondence with the supporting protrusions, and when another tray is stacked on the tray, the stopper protrusions of the other tray sandwich the plate-like member from both sides with the supporting protrusions of the tray, and the plate-like member is restricted from moving in a direction perpendicular to the tray surface, and the difference between the distance between the tip of the stopper protrusion of the other tray and the tip of the supporting protrusion of the tray in the direction perpendicular to the tray surface and the thickness of the plate-like member is a floating gap of the plate-like member, the floating gap being 20% or more of the thickness of the plate-like member.

Description

tray

technical field

The utility model relates to a laminated tray for accommodating a plurality of plate-like components. the

Background technique

Containers for small plate-shaped components such as cover glass used in solid-state imaging devices can be stored and transported on stacked trays. Each tray of the stack type tray can accommodate multiple glass cover plates, and by stacking and packing multiple trays, a large number of plate-shaped parts can be stored in a small container. For example, thousands of these plate-shaped parts can be accommodated in a smaller square box. the

When the glass cover is stored and transported on a laminated tray, the glass cover may collide with the next wall of the tray due to vibration during transportation, causing damage to the glass cover. In addition, external dust will also pollute the glass cover. Prior Art Document 1 studies the problem of dust pollution from glass cover plates. the

Prior art literature

Patent Documents

Patent Document 1: Japanese Utility Model Patent Publication No. 2010-47319

However, the inventors have found that, in addition to the pollution caused by dust, the factors affecting the yield of the glass cover are also formed on the glass cover when the protrusions in the tray are used to limit the movement of the glass cover. transfer marks. It is expected to reduce and eliminate transfer marks and improve the yield of plate-shaped parts such as glass cover plates. the

Utility model content

The purpose of this utility model is to provide a kind of tray, can accommodate a plurality of plate-shaped components on its upper surface, and can accommodate a plurality of plate-shaped components by stacking a plurality of said trays, which can further improve the capacity of the trays. Yield of a large number of plate parts. the

The tray of the present utility model is characterized in that: the upper surface of the tray is provided with: a vertical wall that restricts the movement of the plate-shaped component along the direction of the tray surface; and a wall for supporting the plate at the edge of the plate-shaped component A plurality of supporting protrusions of the shaped part, on the lower surface of the tray, corresponding to the supporting protrusions, a plurality of position-limiting protrusions are provided, and when another tray is stacked on the tray, the position-limiting of the other tray The protrusion and the supporting protrusion of the tray clamp the plate-shaped component from both sides, restricting the movement of the plate-shaped component in a direction perpendicular to the surface of the tray, so that the top end of the limiting protrusion of the other tray and the The difference between the top end of the support protrusion of the tray in the direction perpendicular to the tray surface and the thickness of the plate-shaped member is the floating gap of the plate-shaped member. More than 20% of the thickness of the part. the

According to the pallet of the present invention, by properly setting the distance between the support protrusion and the stopper protrusion, the floating gap of the plate-shaped member is more than 20% of the thickness of the plate-shaped member, which can effectively prevent the plate-shaped component accommodated in the stacked pallet from Form the transfer mark on the surface of the plate-shaped part and improve the pass rate of the plate-shaped part. the

Furthermore, in the tray of the present invention, it is preferable that the floating gap is 110 μm or more, and it is more preferable that the floating gap is 200 μm or less. the

By setting the floating gap of the plate-shaped part to 110 μm or more, it is possible to effectively suppress the formation of transfer marks on the surface of the plate-shaped part, and by setting the floating gap to 200 μm or less, it is possible to suppress the adverse effects of dust and ensure the yield of the plate-shaped part . the

Furthermore, in the tray of this invention, the vertical wall of one tray abuts on the lower surface of the other tray. By abutting the vertical wall on the lower surface of the other tray, the distance between the support protrusion and the stopper protrusion can be ensured, and the floating gap of the plate-shaped member can be secured. the

In addition, the edge of the upper surface of the tray of the utility model is protrudingly provided with a lower fastening frame; the edge of its lower surface is protrudingly provided with an upper fastening frame. The upper fastening frame of one tray and the lower fastening frame of the other tray are interlocked and abutted against each other. By interlocking and abutting the lower engaging frame on the upper surface of one pallet with the upper engaging frame on the lower surface of the other pallet, it is possible to prevent external dust and the like from invading and contaminating the plate-like parts, and to secure the supporting protrusions at the edge of the pallet. The distance between the stopper and the stop protrusion, so as to ensure the floating clearance of the plate part. the

The plate-shaped part of the utility model is a glass cover plate, and the thickness of the glass cover plate is 0.2-0.4mm. the

Description of drawings

Fig. 1 is a front view of a storage tray according to a first embodiment of the present invention. the

Fig. 2 is a partially enlarged front view of the storage tray of the first embodiment. the

Fig. 3 is a rear view of the storage tray of the first embodiment. the

Fig. 4 is a partially enlarged schematic view of the back side of the storage tray in the first embodiment. the

Fig. 5 is a schematic cross-sectional view showing a case where a plurality of storage trays are stacked in the first embodiment. the

FIG. 6 is a schematic partial sectional view showing setting of the floating gap T in the first embodiment. the

Figure 7 shows the transfer marks formed on the cover glass. the

FIG. 8 is a graph showing experimental results of transfer marks and dust generation rates in the first embodiment. the

FIG. 9 is a graph showing experimental results of transfer marks and dust generation rates in the first embodiment. the

Fig. 10 is a front view of a storage tray according to a second embodiment of the present invention. the

Fig. 11 is a partially enlarged schematic diagram of a front view of a storage tray according to a second embodiment. the

Detailed ways

Hereinafter, with reference to the accompanying drawings, taking a glass cover plate of a solid-state imaging device as an example of a plate-shaped component, specific embodiments of the storage tray for storing the plate-shaped component of the present invention will be described in detail. It should be noted that the scope of the present invention is not limited to the following specific embodiments. the

Fig. 1 is a front view of a storage tray 1 of the first real-time mode of the present invention. the

FIG. 2 is a partial enlarged view of the front view of the storage tray 1 in which the cover glass E is stored. the

As shown in Figures 1 and 2, a plurality of cross-shaped vertical walls 11 are formed on the upper surface of the storage tray 1, the vertical walls 11 are arranged in a matrix, and the space between the four adjacent vertical walls 11 accommodates a square glass cover plate E , the vertical wall 11 clamps the four corners of the glass cover E, and restricts the movement of the glass cover along the surface of the storage tray 1 (hereinafter referred to as "plane direction"). the

As shown in FIGS. 1 and 2 , a plurality of support protrusions 13 for supporting the cover glass E at the edge of the cover glass E are formed on the upper surface of the storage tray 1 . the

As shown in FIG. 2 , the glass cover E is accommodated in the spaces between the four adjacent vertical walls 11 . In FIG. 2 , four vacant parts at the upper left, upper right, lower left, and lower right of the cross-shaped vertical wall 11 abut against the top corners of the glass cover E respectively to limit the movement of the glass cover E. the

As shown in Figure 2, in this embodiment, on the upper surface of the storage tray 1, in the accommodation area of each glass cover E, along each side of the glass cover E, two support protrusions 13 are respectively provided, It is used to stably support the glass cover plate E, and prevent the lower surface of the glass cover plate E from contacting with the upper surface of the tray 1 to cause damage. the

As shown in FIG. 1 , a fastening frame 15 protrudes from the edge of the upper surface of the tray 1 . When a plurality of trays 1 are stacked, the engaging frame 15 and an engaging frame 25 provided on the back of the tray 1 described later are engaged with each other. the

Fig. 3 is a back view of the storage tray 1 of the present invention. FIG. 4 is a partially enlarged schematic view of the back of the storage tray 1 of the present invention. the

As shown in FIG. 3 , a plurality of limiting protrusions 23 are formed on the lower surface of the tray 1 . the

Fig. 4 shows that when another tray is stacked on the tray 1, the stop protrusion 23 (indicated by a solid line) on the lower surface of the other tray, and the vertical wall 11, the support protrusion 13 and the glass cover plate E positioned on the upper surface of the tray 1 (indicated by dashed lines) positional relationship. the

As shown in FIG. 4 , each limiting protrusion 23 is located at the midpoint of each side of the glass cover E accommodated on the upper surface of the tray 1, that is, two positioning protrusions arranged along each side of the glass cover E are located. The middle of the support protrusion 13. When another tray is stacked on the tray 1, the positioning protrusion 23 on the lower surface of the other tray presses the glass cover E from above, and the supporting protrusion 13 on the upper surface of the tray 1 supports the glass cover E from below. the

On the lower surface of the tray 1, a snap-fit frame 25 corresponding to the snap-fit frame 15 formed on the upper surface is protrudingly formed, and when a plurality of trays 1 are stacked, the snap-fit frame 15 and the snap-fit frame 25 are snapped together . the

FIG. 5 is a schematic cross-sectional view along a direction parallel to the left-right symmetry axis or the up-down symmetry axis of the trays 1 in FIG. 1 when a plurality of storage trays 1 are stacked on top of each other. the

As shown in Figure 5, the shape of the inner wall of the fastening frame 25 matches the shape of the outer wall of the fastening frame 15 of the lower pallet 1, so when a plurality of pallets 1 are stacked, the fastening frame 25 and the lower pallet 1 are aligned. The outer periphery of the fastening frame 15 is fastened to seal the inner space containing multiple glass cover plates E, so as to prevent external dust and the like from invading and polluting the glass cover plates E. the

When transporting the cover glass E on the container tray 1, multiple layers of trays 1 are stacked (for example, 11 layers of trays 1 are stacked, and the upper surface of the uppermost tray 1 does not contain the glass cover and is used only as a cover) and bundled, so it can be used The smaller container holds a large number of glass covers E for easy transport. In the stacked trays 1, the vertical walls 11 of the four top corners of the glass cover plate E limit the movement of the glass cover plate E in the direction of the tray plane, and the supporting protrusions 13 and the stop protrusions 23 limit the movement of the glass cover plate E in the vertical direction. Move in the plane direction of the pallet ((hereinafter referred to as "vertical direction")). the

When utilizing stacked multiple trays 1 to store and transport the cover glass E, in order to prevent the support protrusion 13 and the stop protrusion 23 of the tray 1 from pressing the cover glass E and causing damage to it, the support protrusion 13 and The vertical distance of the limiting protrusion 23 is slightly greater than the thickness of the glass cover E. Here, the difference between the vertical distance between the supporting protrusion 13 and the limiting protrusion 23 and the thickness of the glass cover E is called the floating gap T of the glass cover E. the

FIG. 6 is a schematic partial sectional view showing setting of the floating gap T. As shown in FIG. FIG. 6 is a part of FIG. 5 . the

In Fig. 6, the height of the support protrusion 13 is h13, the height of the limit protrusion 23 is h23, the height of the vertical wall 11 is h11, the height of the inner peripheral wall 15a of the fastening frame 15 is h15a, and the height of the outer peripheral wall 15b of the fastening frame 15 is h11. The height is h15b, the height of the inner peripheral wall 25a of the fastening frame 25 is h25a (in the example of FIG. 6, h25a=h15b), and the height of the accommodation space S is H (in the example of FIG. 6, H=h11=h15a) , The thickness of the glass cover E is hE. the

When a plurality of trays 1 are stacked, in the middle of the trays 1 , the vertical wall 11 abuts against the bottom surface of the upper tray 1 to form an accommodating space S with a height H. At the edge of the tray 1, the height h15a of the inner peripheral wall 15a of the fastening frame 15, the height h15b of the outer peripheral wall 15b of the fastening frame 15, and the height h25a of the inner peripheral wall 25a of the fastening frame 25 are appropriately set, so that the tray 1 The edge portion of the tray 1 is also formed to have the same accommodation space height H as the middle portion of the tray 1 . the

As described above, when storing and transporting a plurality of stacked pallets 1 packed together, the glass cover E can be prevented from being damaged by appropriately setting the height H of the storage space. the

When the floating gap T is too large, it is easy to cause dust to adhere to the glass cover E and cause defects. Therefore, the floating gap T is set as small as possible in the prior art. The floating gap T of the glass cover E can be obtained by the following formula 1. the

[Formula 1]

T=H-(h13+h23)-hE

The inventors of the present invention have found that after storage and transportation of the glass cover plates E accommodated in the stacked trays 1 , in addition to defects caused by adhered dust, there is also a defect of "transfer mark". The so-called "transfer marks" are traces formed by transferring the antistatic layer coated on the surface of the tray 1 to the glass cover E via the supporting protrusions 13 and the position-limiting protrusions 23 . the

FIG. 7 shows the transfer marks formed on the cover glass E. FIG. the

As shown in Figure 7, on the surface of the glass cover plate E, near the position pressed by the stop protrusion 23 on the lower surface of the tray, transfer marks 31, 33, 35, 37 are formed (refer to the enlarged figure in Figure 7 32, 34, 36, 38). the

The inventors of the present invention found that reducing the floating gap T of the glass cover E can effectively reduce dust pollution, but with the reduction of the floating gap T, the possibility of transfer marks on the glass cover E increases. Moreover, the inventors found through experiments that setting the floating gap T to be more than 20% of the thickness of the glass cover E can effectively reduce the occurrence of transfer marks. the

Furthermore, in the present embodiment, the floating gap T is preferably not less than 110 μm and not more than 200 μm. the

Next, experiments for verifying the above results will be described. the

[Prepare Tray 1]

First, prepare the pallet as shown in Figure 1, Figure 2, and Figure 3. The dimensions of each part of the tray shown in Figure 6 are shown in Table 1. In this experiment, tray 1 can accommodate 10×10=100 glass cover plates E. the

[Table 1]

parameters h13 h23 h11 h15a h15b h25a h Dimensions mm 0.50 0.50 1.50 1.50 1.20 1.20 1.50

It can be seen from Table 1 that according to the height h11 of the vertical wall 11 and the inner and outer wall heights of the fastening frame 15 and the fastening frame 25 , the height H of the accommodation space can be determined to be 1.50 mm. the

Then, according to the thickness of the glass cover plate E set in the column of thickness of the plate-shaped part in Table 2, prepare a glass cover plate sample of a corresponding thickness. the

The samples of glass cover plate E with different thicknesses are grouped and loaded into trays 1 shown in Table 1 respectively, and 10 layers of trays 1 filled with glass cover plate E samples of the same thickness are stacked and packaged (the uppermost tray 1 is empty), constitute the experimental groups of Examples 1-3 and Comparative Examples 1-3 shown in Table 2. the

For each packaged experimental group, in order to simulate the vibration received during transportation, a vibration test experiment was carried out. The experimental conditions are as follows: each experimental group is placed on a test bench that can vibrate back and forth in 3 directions, and vibrates in 3 directions at a frequency of 120 times/minute, and vibrates in each direction for 45 minutes. the

Then, each experimental group was unbundled, and each 300 glass cover plate E samples in the tray 1 of the first, fifth, and ninth floors from the bottom were taken out respectively to detect whether transfer marks occurred. The results of the experiments are shown in Table 2. the

As shown in Table 2, in Examples 1-3, the floating gap T is greater than 20% of the thickness hE of the glass cover E, and the occurrence ratio of transfer marks is very low (0, 0.3%, 2.0%). In Comparative Examples 1 to 4, the floating gap T was less than 20% of the thickness hE of the cover glass E, and the occurrence ratio of transfer marks was high (18.3%, 55.0%, 77.7%, 79.3%). the

[Table 2]

Fig. 8 is a graph showing experimental data of transfer marks and dust generation rate. the

In Fig. 8, the vertical axis on the left side represents the occurrence rate of transfer marks, the vertical axis on the right side represents the generation rate of dust, and the horizontal axis marks the thickness hE and The value of floating gap T. the

As shown in Figure 8, the ratios of the floating gap T to the thickness hE of the glass cover E in Examples 1 to 3 are 100%, 31.9%, and 24% respectively, and the ratios of the floating gap T to the glass cover E in Comparative Examples 1 to 4 The proportions of the thickness hE were 19.2%, 12.7%, 4.7%, 3.2%, respectively. In Examples 1 to 3, the occurrence rate of transfer marks was low, while in Comparative Examples 1 to 4, the occurrence rate of transfer marks was high. As shown in Fig. 8, the occurrence rate of dust is not high. the

In the present invention, the floating gap T of the glass cover E is preferably more than 110 μm, which can effectively suppress the transfer marks on the glass cover E contained in the stacked tray 1 and improve the yield of products. the

As the floating gap T of the cover glass E in the tray 1 increases, dust is generated on the cover glass E and causes problems. Therefore, the floating gap T of the cover glass E is preferably 200 μm or less. the

The inventor of this utility model has tested the occurrence rate of transfer marks and the generation of dust by using the same method as the above experiment on various glass cover plates E with a thickness ranging from 0.2 mm to 0.4 mm under different floating gap T conditions. Rate. The experimental results are shown in Fig. 9 . the

FIG. 9 shows the experimental results of the occurrence rate of transfer marks and the generation rate of dust when the floating gap T is 110 μm or more and 200 μm or less. the

In Fig. 9, the vertical axis on the left represents the occurrence rate of transfer marks, the vertical axis on the right represents the occurrence rate of dust, and the horizontal axis shows the values of the thickness hE of the cover glass E and the floating gap T used in this experiment. the

As shown in Figure 9, under the premise that the floating gap T is more than 20% of the thickness of the glass cover E, for the glass cover with a thickness of 0.2-0.4 mm, when the floating gap T is more than 110 μm and less than 200 μm, the transfer mark The incidence of dust and dust is suppressed below 1%, which can greatly improve the damage to the glass cover E when the glass cover E is transported by packing and stacking the multi-layer pallet 1, and greatly improve the pass rate of the glass cover E . the

Next, a second embodiment of the present utility model will be described with reference to FIG. 10 and FIG. 11 . the

Fig. 10 is a front view of a storage tray 100 according to a second embodiment of the present invention. FIG. 11 is a partially enlarged front view of the storage tray 100 according to this embodiment. the

In the tray 100 of this embodiment, except for the shape of the vertical wall 111, other structures are the same as those of the above-mentioned first embodiment, and the same symbols are used for the parts that are the same as those of the tray structure of the first embodiment, and repeated descriptions will not be repeated. . the

As shown in FIG. 10 , in the tray 100 of the present embodiment, a plurality of sets of square-shaped rib-shaped vertical walls 111 surrounding openings at four corners are formed on the upper surface. The vertical wall 111 includes a horizontal vertical wall 111a and a vertical vertical wall 111b. The horizontal vertical wall 111a restricts the horizontal movement of the glass cover E in the plane direction; the vertical vertical wall 111b restricts the vertical movement of the glass cover E in the plane direction. As shown in FIG. 11 , a group of vertical walls 111 (two horizontal vertical walls 111 a and two vertical vertical walls 111 b ) in the middle of four adjacent glass cover plates E form a square shape with openings at four corners. the

A plurality of square-shaped vertical walls 111 surrounding openings at four corners are arranged in a matrix on the upper surface of the tray 100 to define a plurality of areas for accommodating the glass cover E. the

According to the above-mentioned second embodiment, by forming the vertical wall 111 of the shape of a square that surrounds the opening at four corners, the length of the horizontal vertical wall 111a or the length of the vertical vertical wall 111b can be used to change the horizontal and vertical distances between the glass cover plates E, and, when When the distance between the glass cover plates E is large, the amount of materials used to form the tray 100 can be reduced, the cost can be reduced, and the weight of the tray can be reduced. Damage to glass cover E caused by load, etc. the

Claims (6)

1. A tray capable of accommodating a plurality of plate-shaped parts on its upper surface, and capable of accommodating a plurality of plate-shaped parts by stacking a plurality of said trays, said tray is characterized in that: On the upper surface of the tray are provided: an upstanding wall restricting movement of the plate-like member in the direction of the tray face; and a plurality of supporting protrusions for supporting the plate-shaped member at an edge portion of the plate-shaped member, On the lower surface of the tray, corresponding to the supporting protrusions, a plurality of position-limiting protrusions are arranged, When another tray is stacked on the tray, the stop protrusion of the other tray and the support protrusion of the tray clamp the plate-shaped part from both sides, and the plate-shaped part is restricted to move vertically to the tray. moving in the direction of the surface, Let the difference between the top end of the stop protrusion of the other tray and the top end of the support protrusion of the tray in the direction perpendicular to the tray surface, and the thickness of the plate-shaped member be the plate-shaped member floating gap, The floating gap is 20% or more of the thickness of the plate member. 2. The pallet according to claim 1, characterized in that: The floating gap is 110 μm or more. 3. The tray according to claim 1, characterized in that: The floating gap is 200 μm or less. 4. The pallet according to any one of claims 1 to 3, characterized in that: The vertical wall of the tray abuts against the lower surface of the other tray. 5. The tray according to any one of claims 1 to 3, characterized in that: The edge of the upper surface is protrudingly provided with a lower fastening frame; The edge of the lower surface is protrudingly provided with an upper fastening frame, The upper fastening frame of the other tray bottom and the lower fastening frame of the tray are interlocked and abutted against each other. the 6. The pallet according to claim 1, characterized in that: The plate-shaped component is a glass cover plate, and the thickness of the glass cover plate is 0.2-0.4 mm. the

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