JP6505577B2 - Glass article holder and method of manufacturing glass article - Google Patents

Description

  The present invention relates to a glass article holder and a method of manufacturing a glass article.

  DESCRIPTION OF RELATED ART Conventionally, the glass article holder which hold | maintains a glass article in conveyance of a glass article, and a process process is known. For example, Patent Document 1 discloses a glass article holder used in a firing process of a glass substrate and in and out of a firing furnace.

JP 2002-243368 A

  By the way, the glass article holder used conventionally is comprised with metal frame members, such as stainless steel. Therefore, if a process of performing heat treatment such as firing of the glass article is held in a state of being held by the glass article holder in the manufacturing process of the glass article, expansion and contraction due to temperature change occur in the glass article holder as well as the glass article. It occurs.

  If no special measures against heat are taken for such a glass article holder, for example, the distance between the holding parts holding the both ends of the glass article becomes large at the time of expansion and becomes small at the time of contraction. There is a risk of problems. In some cases, the distance between the holding parts of the glass article holder becomes large, and the glass article is detached from each holding part and falls down, causing damage to the glass article, or the distance between the holding parts becomes small. There is a risk that the quality of the glass article may be degraded, for example, by pressing the end of the article to damage it.

  The present invention has been made to solve the above problems, and an object thereof is to manufacture a glass article holder capable of holding a glass article in a stable state even if a temperature change occurs, and a glass article To provide a way.

  A glass article holder for solving the above problems comprises a body frame, and a glass article holder comprising first and second holders attached to the body frame so as to face each other and hold opposite ends of the glass article. The at least one of the first and second holding portions is not engaged with the main body frame in the opposing direction of the first and second holding portions, and the first and second holding portions Between the parts, an intervening member having a thermal expansion coefficient smaller than that of the main body frame is interposed, and the space between the two holding parts is maintained.

  According to this configuration, at least one of the first and second holding parts for holding the opposite end of the glass article is not engaged with the main frame in the opposing direction of the two holding parts, and both holding parts Between the two holding parts, the space between the two holding parts is maintained by the interposition member whose thermal expansion coefficient is smaller than that of the main body frame. That is, when the glass article holder is used in a large temperature change environment where heating and cooling are performed together with the glass article, the main body frame of the glass article holder expands and contracts, but the distance between the first and second holders is It is hard to be influenced by the expansion and contraction of the main body frame, and the change in the distance between the two holding parts can be kept small. Thereby, it is possible to hold the glass article in a stable state even if a temperature change occurs.

In the above glass article holder, preferably, the interposed member contains crystallized glass.
According to this configuration, since the intervening member interposed between the first and second holding portions is configured to include crystallized glass having a very small thermal expansion coefficient, the change in the distance between the first and second holding portions is It can be kept smaller more reliably.

In the above glass article holder, preferably, the glass article is in the form of a plate, and can be held so that the main plane is oriented in the direction intersecting the horizontal direction.
According to this configuration, the glass article holder can hold the main plane of the plate-like glass article in the direction intersecting the horizontal direction.

In the glass article holder, it is preferable that the glass article holder further comprises an attachment member for attaching at least one of the first and second holding parts to the interposed member by mounting.
According to this configuration, at least one of the first and second holding portions is in the mounting mode by mounting the mounting member to the intervening member that is less susceptible to the expansion and contraction of the main body frame, so The spacing between the first and second holders can be easily adjusted accordingly.

The manufacturing method of the glass article which solves the said subject includes the baking process of the glass article hold | maintained using the said glass article holder.
By including the firing step in the manufacturing process of the glass article, the temperature change to the glass article holder may be large and expansion and contraction of the glass article holder may occur, but by using the glass article holder of the above configuration It is possible to perform the manufacture while holding in a stable state.

  ADVANTAGE OF THE INVENTION According to the manufacturing method of the glass article holder of this invention, and a glass article, even if a temperature change arises, a glass article can be hold | maintained in the stable state.

(A) is a perspective view of the glass article holder in the state in which the glass article in one embodiment is held, and (b) is a perspective view of the glass article holder in the state without a glass article. It is a disassembled perspective view of a glass article holder. (A) is a top view of the glass article holder of embodiment, (b) is the AA sectional view.

Hereinafter, the manufacturing method of a glass article holder and a glass article is explained using figures.
As shown in FIGS. 1 to 3, the glass article holder 11 is a holder configured to be able to hold a plurality of sheet glass G in order to bake and transport the rectangular sheet glass G. In FIG. 1, one section of the glass article holder 11 in the longitudinal direction is shown.

  The glass article holder 11 includes a main body frame 12 made of a stainless steel frame member, two lower end holding portions 13 for supporting the lower end of the plate glass G at two points in one section, and both side ends of the plate glass G And two side end holding portions 14 for holding the two at one place. The lower end holding portion 13 and the side end holding portion 14 respectively have a plurality of (for example, five) concave portions 13 a and 14 a. Each of the concave portions 13a and 14a is configured such that each end of the sheet glass G can be inserted, and a plurality of sheets of sheet glass G are spaced from each other in the horizontal direction such that the main sheet G faces the substantially vertical direction. It can be held side by side. In addition, a contact member such as, for example, an alumina-based refractory suitable for receiving the load of the sheet glass G while being in contact with the sheet glass G is attached to the recess 13 a of the lower end holding portion 13. In addition, a contact member such as mica ceramic suitable for preventing breakage while in contact with the sheet glass G is attached to the recess 14 a of the side end holding portion 14.

  The main body frame 12 has a rectangular frame-like bottom frame 12a, a side frame 12b erected at four corners of the bottom frame 12a (only two corners in the longitudinal direction are shown in FIG. 1), and a side frame 12b. And a rectangular frame-shaped upper frame 12c connecting the upper ends. In the pair of long sides of the bottom frame 12a, a plurality of positioning holes 12d are provided in the longitudinal direction. The lower end holding portion 13 is disposed so as to extend across the widthwise direction of the bottom frame 12a, and the positioning pins 13b provided at both ends of the lower end holding portion 13 are positioning holes 12d for long sides of the bottom portion frame 12a. It is installed by being inserted into. Further, the position of the lower end holding portion 13 can be appropriately adjusted in the longitudinal direction of the bottom portion frame 12a according to the insertion position of the positioning pin 13b into the positioning hole 12d. That is, the position of the lower end holding portion 13 can be changed in accordance with the size of the sheet glass G to be held.

In the pair of long sides of the upper frame 12c, a plurality of positioning holes 12e are provided in the longitudinal direction. The pitch of the positioning holes 12e of the upper frame 12c may be the same as or different from the pitch of the positioning holes 12d of the bottom frame 12a. An elongated plate-like base plate 15 is mounted on the pair of long sides of the upper frame 12c along the longitudinal direction. The base plate 15 of this embodiment is made of an extremely low expansion material having an average linear thermal expansion coefficient at about 30 to 750 ° C. of about −10 to + 30 × 10 ⁻⁷ / ° C., for example, crystallized glass (for example, Nippon Electric Glass Co., Ltd. Neoceram N-0) is used.

  As shown in FIG. 2, the positioning hole 15a is provided in the base plate 15 corresponding to the arrangement position of the side end holding portion 14 (14x) on one side. The positioning pins 14b integrally provided at both ends of the one side end holding portion 14 (14x) are inserted into the positioning holes 12e of the upper frame 12c after the positioning holes 15a of the base plate 15 are inserted. Thus, the side end holding portion 14 (14x) on one side is installed so as to be stretched in the lateral direction of the upper frame 12c.

  The other side end holding portion 14 (14y) is attached to the pair of long sides of the upper frame 12c on which the base plate 15 is mounted via the attachment members 16, respectively. That is, the other side end holding portion 14 (14 y) is installed so as to be bridged in the short direction of the upper frame 12 c via the respective attachment members 16. In addition, the positioning hole corresponding to the arrangement position of the attachment member 16 is not provided in the base plate 15 especially.

  The mounting member 16 has a U-shaped mounting base 17 which is open at the lower side, and a mounting plate 18 which is inserted through a pair of mounting pins 17 a erected on the upper surface of the mounting base 17 and mounted on the mounting base 17. Have. The mounting base 17 is fitted into the long side portion of the upper frame 12c on which the base plate 15 is mounted, and the mounting position in the longitudinal direction of the upper frame 12c can be changed. Positioning holes 18 a are provided in the mounting plate 18. The mounting plate 18 uses the same crystallized glass as the base plate 15 in the present embodiment, but other members can also be used.

  The positioning pins 14 b integrally provided at both ends of the other side end holding portion 14 (14 y) are inserted into the positioning holes 18 a of the mounting plate 18 mounted on the mounting base 17. In this manner, the other side end holding portion 14 (14y) is installed using the mounting member 16 so as to be stretched in the lateral direction of the upper frame 12c.

  In this case, the other side end holding portion 14 (14y) is the space between the mounting member 16 (self-weight) including the mounting member 16 and the mounting plate 16 (mounting base 17) and the base plate 15 on the upper frame 12c. The static friction force due to the friction coefficient suppresses movement (position holding) from its own arrangement position. The other side end holding portion 14 (14y) lifts the mounting member 16 and lifts the mounting position of the mounting member 16 in the longitudinal direction of the upper frame 12c against the frictional force against the base plate 15. By changing the distance W, the distance W to the one side end holding portion 14 (14x) can be changed according to the size of the sheet glass G to be held and the like. Since the other side end holding portion 14 (14y) has a positioning structure without using pins and holes with respect to the upper frame 12c (base plate 15), fine adjustment of the distance W is also possible.

Next, the operation of the present embodiment will be described.
Since the manufacturing process of the plate glass G of the present embodiment includes the baking step, the glass article holder 11 is carried out with respect to the holding glass G with respect to the baking furnace. Therefore, the glass article holder 11 is exposed to a high temperature state in the firing furnace, and is rapidly cooled at the time of unloading from the firing furnace. Under such circumstances, the body frame 12 made of stainless steel expands and contracts. At this time, the lower end holding portion 13 positioned by the pin 13 b on the bottom frame 12 a of the main body frame 12 is displaced relative to the glass sheet G due to the expansion and contraction of the bottom frame 12 a particularly in the longitudinal direction. However, since the displacement direction of the lower end holding portion 13 is a position displacement in the direction along the edge of the sheet glass G, the stress acting on the sheet glass G from the recess 13 a of the lower end holding portion 13 is relatively small.

  On the other hand, in the case where the pair of side end holding portions 14 is positioned and fixed to the upper frame 12c of the main body frame 12 as in the prior art, the side edges are particularly affected by expansion and contraction in the longitudinal direction of the upper frame 12c. The holding portions 14 may affect the both side ends of the glass sheet G. Specifically, when the upper frame 12c expands in the longitudinal direction, the distance W between the pair of side end holding portions 14 widens, the holding of the sheet glass G is released, and the sheet glass G may collapse. In addition, when the upper frame 12c contracts in the longitudinal direction, the pair of side end holding portions 14 may be in pressure contact with each other so as to hold the sheet glass G close to each other, which may damage the sheet glass G.

  Based on this, in the glass article holder 11 of this embodiment, the side end holding portion 14 (14x) on one side is positioned on the upper frame 12c by the pin 14b, whereas the side end holding portion on the other side 14 (14y) is installed with respect to the mounting member 16 mounted on the mounting base 17 which consists of a low expansion material. That is, even if the upper frame 12c expands and contracts in the longitudinal direction due to a temperature change, the mounting base 17 does not easily expand and contract, and the upper frame 12c expands and contracts independently below the mounting base 17. Therefore, the side end holding portion 14 (14y) on the other side is less likely to be displaced. Accordingly, even when temperature changes occur such that the body frame 12 of the glass article holder 11 expands and contracts, the distance W between the pair of side end holding portions 14 (14x and 14y) does not substantially change. And the edge damage of the sheet glass G can be suppressed, and the sheet glass G can be held in a stable state.

Next, characteristic effects of the present embodiment will be described.
(1) In the present embodiment, the other side end holding portion 14 (14y) of the pair of side end holding portions 14 (14x, 14y) for holding the opposite end portion of the sheet glass G It is longitudinally non-engaged with the upper frame 12c. Further, the space W between the two holding parts 14 (14x, 14y) is held between the pair of side end holding parts 14 (14x, 14y) by the interposition of the base plate 15 whose thermal expansion coefficient is extremely smaller than that of the body frame 12. Is being done. That is, when the glass article holder 11 is used in a large temperature change environment where heating and cooling are performed together with the sheet glass G, the main body frame 12 expands and contracts, but the distance between the pair of side end holding portions 14 (14x, 14y) W is unlikely to be affected by the expansion and contraction of the main body frame 12, and the change in the distance W between the two holding portions 14 (14x, 14y) can be kept extremely small. Thereby, even if temperature change arises, the plate glass G can be hold | maintained in the stable state, and the manufacture can be performed.

  (2) Since the base plate 15 interposed between the pair of side end holding portions 14 (14x, 14y) is made of crystallized glass having a very small coefficient of thermal expansion, the side end holding portions 14 (14x, 14y) The variation of the distance W between the two) can be suppressed to a smaller value more reliably.

  (3) The other side end holding portion 14 (14y) has a mounting aspect by mounting the mounting member 16 to the base plate 15 which is less susceptible to the expansion and contraction of the main body frame 12, so the dimensions of the sheet glass G The distance W between the pair of side end holding portions 14 (14x, 14y) can be easily adjusted according to the like.

The above embodiment may be modified as follows.
In the above embodiment, the two side end holding portions 14 and the two lower end holding portions 13 are used in one section of the glass article holder 11. However, the number may be set freely.

  In the above embodiment, the crystallized glass is used for the base plate 15 and the crystallized glass is similarly used for the mounting base 17 of the mounting member 16, but another material having a thermal expansion coefficient smaller than that of the main body frame 12 such as ceramic is used. It is also good.

-Although the base plate 15 was comprised by one component in the said embodiment, you may comprise including parts other than crystallized glass in one part.
In the above embodiment, the mounting member 16 is used that allows only the other side end holding portion 14y of the two side end holding portions 14 to move relative to the base plate 15 (upper frame 12c), You may use for the side edge holding part 14x side of one side.

  In the above embodiment, the mounting member 16 is configured to use the mounting base 17 and the mounting plate 18, but the configuration of the mounting member 16 may be changed as appropriate. For example, it may be configured by one part having both the functions of the mounting base 17 and the mounting plate 18.

  -In the said embodiment, although the sheet glass G was hold | maintained to the perpendicular | vertical direction by the glass article holder 11, even if it applies to the glass article holder of the aspect hold | maintained in the direction and horizontal direction which cross | intersect a horizontal direction. Good.

  -In the said embodiment, although the plate glass G was hold | maintained at the glass article holder 11, you may hold | maintain another glass article.

  11: Glass article holder, 12: body frame, 14: side end holding portion (holding portion), 14x: side end holding portion on one side (first holding portion), 14y: side end holding portion on the other side 2 holding part), 15 ... base plate (intervening member), 16 ... mounting member, G ... plate glass (glass article).

Claims (5)

A glass article holder comprising: a main body frame; and first and second holders attached to the main body frame so as to be opposed to each other to respectively hold opposite ends of the glass article,
At least one of the first and second holding parts is not engaged with the main body frame in the opposing direction of the first and second holding parts, and the space between the first and second holding parts is not What is claimed is: 1. A glass article holder comprising: an interposing member having a thermal expansion coefficient smaller than that of a main body frame, and configured to hold an interval between the two holding parts.   The glass article holder according to claim 1, wherein the interposed member comprises crystallized glass.   The glass article according to claim 1 or 2, wherein the glass article is in the form of a plate, and the main plane is configured to be oriented so as to cross the horizontal direction and be able to be held. Equipment.   The glass article holding device according to any one of claims 1 to 3, further comprising: a mounting member for mounting at least one of the first and second holding portions by mounting on the intervening member. Equipment.   The manufacturing method of the glass article characterized by including the baking process of the glass article hold | maintained using the glass article holder as described in any one of Claims 1-4.

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