JP3928906B2 - Transport container - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a transport container made of a vacuum molded body of synthetic resin thin plates that can be stacked, and more particularly to a transport container that prevents the load from being applied to articles in the container when stacked. .
[0002]
[Prior art]
In the production process of electronic parts and the like, the work-in-process is carried in a transfer container called a tray. For example, in the production process of the liquid crystal display panel, a transport container as illustrated in FIG. 7 is used.
[0003]
Since the article to be handled is small and lightweight, the entire container 1 is made of a synthetic resin thin plate vacuum molded body, and the support substrate 2 has a predetermined depth for storing an article (work in process) not shown. An article storage unit 3 is formed. In this example, four article storage portions 3 are formed on the support substrate 2. Further, a side frame wall 4 is integrally provided around the support substrate 2.
[0004]
In the mass production process, a large number of transport containers 1 having the same shape are prepared. However, in order to increase transport efficiency, a predetermined number of transport containers 1 are often stacked in a so-called vertical stack, and more in one operation. The goods are transported to the next process.
[0005]
[Problems to be solved by the invention]
However, this has the following problems. That is, in addition to having the same shape, each transport container 1 is provided with a taper for die cutting with respect to the vacuum molding die on the side frame wall 4 and the side wall 3a of the article storage unit 3.
[0006]
For this reason, when these conveyance containers 1 are stacked in the same direction, there is almost no gap. This means that when an article is stored in the article storage unit 3, the article is pressed (squeezed) by the load of the transport container 1 stacked on the article storage unit 3. It can have an adverse effect. In the case of a liquid crystal display panel, it appears as a display defect.
[0007]
In order to avoid this, as a first method, for example, a spacer member or the like is formed in the container 1 for transportation and a predetermined gap is secured between the article storage portions 3 of the containers 1 or as a second method. Instead of stacking the transport containers 1 in the same direction, the other transport containers 1 may be stacked at different angles, for example, by 90 degrees with respect to the lower transport container 1.
[0008]
However, in the first method, the position where the spacer member is provided must be changed between the transport container 1 disposed below and the transport container 1 disposed above, and therefore two types of molding dies are used. Is necessary and is not preferable in terms of cost.
[0009]
Further, in the stacking as in the second method, since there is no catch between the respective containers 1 for transportation and the piles of the vertical stack are not stable, careful attention is required for transportation. Moreover, even if great care is taken, there is a case where a so-called landslide may occur, resulting in unexpected damage.
[0010]
Further, when stacking the transport containers 1 as described above, if the placement angle is changed every other container, when the articles are taken out from the article storage section 3 of the transport container 1, the orientation of the articles is different. Therefore, it is difficult to apply an automatic machine for the handling, which is not preferable in terms of productivity.
[0011]
The present invention has been made in order to solve such a problem, and the purpose thereof is for transportation so that an extra load is not applied to the stored articles even when the containers for transportation are stacked in the same direction. To provide a container.
[0012]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a transport container made of a synthetic resin thin plate vacuum formed body that can be stacked, and a support substrate having an article storage portion having a depth larger than the thickness of the article to be transported. A side frame wall formed around the support substrate, and a stack fitting means that presents a first recess on the bottom surface side of the support substrate and a first protrusion on the top surface side of the support substrate, In the transport container that is stacked by fitting the first convex portion of the fitting means of another transport container into the first concave portion of the fitting means, the first of the fitting means. A stopper is formed on the inner wall surface of the concave portion so as to abut against the first convex portion on the other transport container side during stacking and regulate the stacking height, and the bottom surface side of the support substrate. In the second convex portion, on the upper surface side of the support substrate, the second convex portion Exhibit section, opening of the same second recess is characterized in that it further includes an auxiliary stopper that is smaller fence than the bottom surface of the second protrusion.
[0013]
In this case, the position of the stopper is appropriately determined in relation to the height (thickness) of the article to be stored. That is, the stopper is provided at a position where the bottom surface of the article storage portion of the transport container placed thereon does not hit the article.
[0014]
Thereby, an extra load is not applied to the article. In addition, since the mutual relationship between the upper and lower transfer containers is maintained by the stacking fitting means, so-called mountain collapse does not occur even when a large number of the containers are stacked.
[0015]
Since the transport container is made of a synthetic resin thin plate vacuum molded body, the stopper can be formed in a reverse taper shape when viewed from the opening surface side of the first recess, which is another feature of the present invention. One.
[0016]
The fitting means is preferably provided between the side frame wall and the article storage portion. However, when a plurality of the article storage portions are formed on the support substrate, the fitting means is used as the fitting means. It can also be provided between the article storage units.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
The invention will now be described in more detail on the basis of the embodiments shown in the drawings.
[0018]
FIG. 1 is a perspective view of a transport container 10 according to this embodiment, and FIG. 2 is a plan view thereof. Similarly to the conventional example described above, the entire container 10 is made of a synthetic resin thin plate vacuum formed body, and the support substrate 2 has an article storage unit having a predetermined depth for storing the article (in-process product). 3 is formed.
[0019]
Further, a side frame wall 4 is integrally provided around the support substrate 2. Also in this example, four article storage portions 3 are formed on the support substrate 2, and FIG. 2 shows a liquid crystal display as an article placed in one of them (the lower right-side article storage portion 3). Panel L is schematically shown by hatching.
[0020]
FIG. 3 is a cross-sectional view taken along line AA of FIG. 2 , and FIG. 4 is an enlarged cross-sectional view of the transfer container 10 stacked. According to this, the stack first fitting means 20 is provided between the side frame wall 4 and the article storage section 3, and the stack second fitting means 30 is also provided between the article storage sections 3. Is provided.
[0021]
That is, in this embodiment, there are four first fitting means 20 along the side frame wall 4, and there are two second fitting means 30 between the respective article storage portions 3 arranged side by side in FIG. 2. Since each 1st fitting means 20 is the same structure and each 2nd fitting means 30 is also the same structure, each one is demonstrated.
[0022]
The first fitting means 20 includes the side frame walls 4 and the side walls 3 a of the article storage unit 3. The first fitting means 20 is a concave portion 21 on the bottom surface side of the support substrate 2 and a convex portion 22 on the top surface side of the support substrate 2. Looking at the recess 21 side, the side frame wall 4 and the side wall 3a are provided with a taper T1 for punching that gradually widens toward the opening surface.
[0023]
As a result, as shown in FIG. 4, the concave portion 21 of the transport container 10 disposed on the upper side is fitted into the convex portion 22 of the transport container 10 disposed on the lower side. In this case, the side frame wall 4 is formed with a stopper 24 for regulating the fitting depth.
[0024]
The stopper 24 is formed in a reverse taper shape when viewed from the opening surface side of the recess 21. That is, the stopper 24 is formed by denting a part of the side frame wall 4 into the recess 21. The stopper 24 has a reverse taper with respect to a vacuum molding die (not shown) of the transport container 10, but can be easily removed from the molding die if the resin is soft to some extent.
[0025]
Unlike this embodiment, the stopper 24 may be provided on the side wall 3a side or on both the side frame wall 4 and the side wall 3a, but in any case, as shown in FIG. Are stacked, abutting against the convex portion 22 of the transport container 10 disposed on the lower side, between the bottom surface of the article storage section 3 and the stored article (in this example, the liquid crystal display panel L) Is provided at a position where a predetermined gap is generated.
[0026]
The second fitting means 30 includes a side wall 3 a of one article storage section 3 and a side wall 3 a of the other article storage section 3, and a recess 31 is formed on the bottom surface side of the support substrate 2, as in the first fitting means 20. And the convex part 32 is exhibited on the upper surface side of the support substrate 2.
[0027]
When the concave portion 31 is viewed, each side wall 3a, 3a is also provided with a die-cutting taper that gradually widens toward the opening surface side, but one side wall 3a has the first fitting means 20 described above. The same stopper 34 is formed. That is, the stopper 34 is formed so as to contact the convex portion 32 of the counterpart second fitting means 30, thereby restricting the fitting depth between the second fitting means 30.
[0028]
In addition, the transport container 10 further includes an auxiliary stopper 40. In this embodiment, nine auxiliary stoppers 40 are arranged substantially evenly so as to be positioned at the four corners of each article storage unit 3. The auxiliary stopper 40 also serves as a reinforcing rib of the support substrate 2.
[0029]
Here, the configuration of the auxiliary stopper 40 will be described with reference to the cross-sectional view of FIG. 5 (cross-sectional view taken along the line BB of FIG. 2) and the enlarged cross-sectional view of the transport container 10 of FIG. Each auxiliary stopper 40 has the same configuration.
[0030]
The auxiliary stopper 40 is a convex portion 41 on the bottom surface side of the support substrate 2 and has a concave portion 42 on the upper surface side of the support substrate 2, opposite to the stacking fitting means 20, 30, and its opening surface is It is a long hole.
[0031]
The wall surface of the convex part 41 and the concave part 42 is provided with a taper T2 for punching that gradually widens toward the opening side of the concave part 42. Therefore, since the opening surface of the concave portion 42 is larger than the bottom surface of the convex portion 41 as it is, the convex portion 41 enters the opening surface of the counterpart concave portion 42 when stacked, and does not serve as a stopper.
[0032]
Therefore, in this embodiment, a vertical wall surface 43 that rises perpendicularly from the bottom of the concave portion 42 is formed in a part of the concave portion 42, thereby making the opening surface of the concave portion 42 substantially smaller than the bottom surface of the convex portion 41, When stacked, the convex portion 41 does not enter the opening surface of the counterpart concave portion 42.
[0033]
That is, the vertical wall surface 43 acts as a stopper. In this embodiment, a pair of vertical wall surfaces 43 are provided oppositely on each long side of the opening surface of the recess 42, but one may be provided, and depending on circumstances, the vertical wall surface 43 may be disposed on the short side. May be formed. In any case, since it is the vertical wall surface 43, it does not hinder the removal from the molding die.
[0034]
In the auxiliary stopper 40, the stoppers 24 and 34 of the first and second fitting means 20 and 30 act appropriately and effectively, and the support substrate 2 is deformed by the weight of the stored article L. Unless otherwise, as shown in FIG. 6, the height (length) dimension is set so as not to contact each other.
[0035]
That is, the auxiliary stopper 40 is used, for example, when the number of stacking stages of the transport container 10 is large and the stoppers 24 and 34 of the first and second fitting means 20 and 30 are not able to withstand the load and are removed. First contact the opponent.
[0036]
In the above embodiment, the stacking fitting means is the first and second fitting means 20, 30, but any one of them may be used. Moreover, in the said Example, although the fitting means for stack | stuck and an auxiliary stopper are used together, for example, when the articles | goods to convey are lightweight, you may use only an auxiliary stopper.
[0037]
【The invention's effect】
As described above, according to the present invention, in a transport container made of a synthetic resin thin plate vacuum formed body that can be stacked, the stack height with other transport containers is regulated in the stack fitting means. By forming the stopper to be provided, a transport container that does not apply an extra load to the transported article even when stacked in the same direction while having the same shape is provided.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a transport container according to the present invention.
FIG. 2 is a plan view of the embodiment.
3 is a cross-sectional view taken along line AA in FIG.
4 is a cross-sectional view taken along the line AA of FIG. 2 in a state where the transfer containers according to the embodiment are stacked, and an enlarged cross-sectional view of a main part thereof.
5 is a cross-sectional view taken along line BB in FIG.
6 is an enlarged cross-sectional view of a main part along the line BB in FIG. 2 in a state where the transfer containers according to the embodiment are stacked.
FIG. 7 is a perspective view showing a transfer container as a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 2 Support substrate 3 Article storage part 3a Side wall 4 Side frame wall 10 Container for conveyance 20 Stack first fitting means 21, 32 Concavity 22, 32 Convex parts 24, 34 Stopper 30 Stack second fitting means 40 Auxiliary stopper 41 Convex part 42 Concave part 43 Vertical wall surface (stopper)

Claims (5)

A support container comprising a vacuum molded body of synthetic resin thin plates that can be stacked, a support substrate having an article storage portion with a depth larger than the thickness of the article to be transported , and a side frame wall formed around the support substrate And a stacking fitting means that is a first recess on the bottom surface side of the support substrate and a first protrusion on the top surface side of the support substrate, and in the first recess of the fitting means In the transport container that is stacked by fitting the first convex portion of the fitting means of the other transport container,
The inner wall surface of the first recess of the fitting means is formed with a stopper that abuts against the first convex portion on the other transport container side during stacking and regulates the stacking height. And
The bottom side of the supporting substrate exhibits a second recess in the upper surface side of a and the supporting substrate and the second convex portion, the opening face of the second recess is smaller fence than the bottom surface of the second protrusion A transport container, further comprising an auxiliary stopper. The wall surface of the second convex portion and the second concave portion of the auxiliary stopper is tapered except for a part thereof, whereas a part thereof is a bottom portion of the second concave portion. is a vertical wall which rises vertically from, for transport according to claim 1, by the vertical wall opening surface of said second recess, characterized in that it is small fence than the bottom surface of the second protrusion container. The stopper is transport container according to claim 1 or 2, characterized in that it is formed in a reverse tapered shape when viewed from the opening surface side of the first recess. The fitting means, the transport container according to any one of claims 1 to 3, characterized in that provided between the side frame walls and the article storage portion. The said support substrate is formed with two or more said articles | goods accommodating parts, The said fitting means is provided among those articles | goods accommodating parts , The any one of Claim 1 thru | or 4 characterized by the above-mentioned. Container for transportation.

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