JP3677465B2 - Dimensional control device for curing foam molded containers - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a size regulating device for curing foam molded containers, and relates to an apparatus used so that a foam molded container after molding does not cause a dimensional change.
[0002]
[Background Art and Problems to be Solved by the Invention]
Conventionally, in the case of large foam molded containers, after molding, the bottom side that becomes the lower side of the peripheral side wall during curing in the drying chamber etc. due to factors such as raw material old and new, molding conditions, drying time after molding, drying method etc. However, since the resin is present, the inward shrinkage is likely to occur, and the upper opening side of the foamed container is free from resin and is not hollow, so that the shrinkage is small. Therefore, the dimensional behavior of the foam-molded container cannot be predicted, the vertical dimension difference tends to be large, the dimensional change within the allowable range is not limited, and a defective product may be generated.
[0003]
In particular, in the case where the foam-molded container is formed with a longitudinal groove on the inner side surface that can accommodate highly accurate substrates such as a plasma display substrate (hereinafter referred to as a PDP substrate), dimensional stabilization has been extremely required.
Therefore, an object of the present invention is to provide a dimensional regulation device for curing that can solve such problems.
[0004]
[Means for Solving the Problems]
As a curing dimension regulating device for a foam molded container capable of solving the conventional problems and achieving the object of the present invention, as described in claim 1, at least both end portions with respect to the regulating main material facing each other An adjustment rod having a bolt fastening portion is connected to a frame to form a frame, and at least the upper end side of the foamed molded container is molded with the frame so that the size can be regulated during curing. It is said.
[0005]
According to the above-described curing dimension regulating device according to the present invention, at least the upper end side of the foam molded container is surrounded and contracted on the container bottom side side to reliably prevent the container opening side from changing dimensions in the expanding direction. In addition, dimensional stabilization during curing can be achieved.
Especially in the case of a container in which many grooves are formed on the inner surface so that the foam-molded container can accommodate the PDP substrates in the vertical grooves one by one, the dimensional stabilization also stabilizes the dimensions of the grooves into which the PDP substrates are placed. A foam-molded container suitable for housing a PDP substrate can be provided.
[0006]
In particular, in the present invention, when the regulation main material is made of square material as in claim 2 subordinate to claim 1, it is easy to apply from the outer surface of the foam molded container, and the foamed molded container has good stabilization at the time of surrounding. Become.
Further, according to the present invention, as in claim 3 dependent on claim 1 or 2, the adjustment rod is characterized in that a pipe located between the regulating main members is fitted to the outside. Then, when the container is surrounded by the frame, the dimensional change of the foam molded container can be reliably regulated by the length of the pipe, which is very convenient.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described below with reference to the drawings.
1 to 3 show a curing dimension regulating device according to the present invention for a box-shaped foamed container 1 suitable for accommodating PDP substrates one by one in a longitudinally opposed groove 10. Reference numerals 20 and 20 in the figure denote regulation main members facing each other, which are made of square members made of wood or synthetic resin, and are applied to the two upper sides of the container 1. Reference numerals 30 and 30 denote two adjusting rods having at least both ends as bolt fastening portions A and including bolt portions 31 and nuts 32. The bolt portions 31 and 31 of the bolt fastening portions A with respect to the regulation main members 20 and 20 are provided. Is tightened with nuts 32, 32 for preventing back and forth loosening, and the regulation main members 20, 20 and the adjustment rods 30, 30 are connected to form a frame, and this frame is foam-molded. At least the upper end side of the container 1 immediately after is surrounded so that dimensional regulation can be performed during curing performed in a drying chamber or the like (for example, about 8 hours after molding). There is almost no dimensional change after that even if the regulating device is dismantled after curing.
[0008]
As the adjustment rods 30 and 30 described above, a pipe p made of synthetic resin such as vinyl chloride positioned between the regulation main members 20 and 20 is used, and the pipe p of the container 1 is used. If the length of the pipe p is in a range that can be tolerated even if the container 1 undergoes a dimensional change, the pipe p can be contracted during curing on the bottom side, which is the lower side of the container 1. Thus, it is possible to reliably regulate the expansion on the opening side of the container 1 so that the same functions as the regulation main members 20 and 20 can be performed in an auxiliary manner.
[0009]
In practice, the embodiment in which the fastening to the container 1 using the frame body by the connection between the regulation main members 20 and 20 and the adjustment rods 30 and 30 is performed only at one place on the upper end side is illustrated. You may carry out by enclosing the outer side of the container 1 over several places by the relationship of depth or a magnitude | size.
[0010]
【The invention's effect】
With the use of the curing dimension regulating device according to the present invention, among the containers immediately after foam molding, at the top end side of the container to be expanded outward, as the bottom side that is the lower side of the container during dry curing contracts. The size restriction on the opening side can be fulfilled with certainty, and the vertical dimension difference of the container is restricted within an allowable range, and a good foam-molded container can be provided.
[Brief description of the drawings]
FIG. 1 is a perspective view.
FIG. 2 is a plan view.
FIG. 3 is a front view.
[Explanation of symbols]
1 Container 10 Groove 20, 20 Regulated main material 30, 30 Adjustment rod A Bolt fastening part 31 Bolt 32 Nut p Pipe

Claims (3)

An adjustment rod having bolt fastening portions at least at both ends is connected to the regulation main members facing each other to form a frame, and surrounds at least the upper end side of the molded foam molded container with the frame Dimension restriction device for curing foam molded container, characterized in that dimension regulation during curing can be performed. 2. The size regulating device for curing a foam-molded container according to claim 1, wherein the regulating main material is made of square wood. 3. The size regulating apparatus for curing a foam-molded container according to claim 1 or 2, wherein the adjusting rod is formed by fitting a pipe located between intervals of the regulating main material to the outside.

Images