MXPA97003749A

MXPA97003749A - Post design for house furniture

Info

Publication number: MXPA97003749A
Application number: MXPA/A/1997/003749A
Authority: MX
Inventors: A Turner Craig; J Kulakusky Anthony
Original assignee: Saint Gobain/Norton Industrial Ceramics Corporation
Priority date: 1994-11-22
Filing date: 1997-05-21
Publication date: 1998-07-03

Abstract

An oven furniture assembly consisting of: a) a pair of vertical posts, b) a plurality of short horizontal beams extending from one of said posts at identical intervals and in the same direction, defining the upper surfaces at a certain interval. of the pair of beams a horizontal surface, and c) a spar resting on each of the horizontal surfaces, where each beam is supported only by the single pole from which it extends.

Description

POST DESIGN PñRfl OVEN FURNITURE BACKGROUND OF THE INVENTION In the production at high volumes of ceramic parts the manufacturing line is commonly designed for continuous production. In the continuous production lines, the kiln cars containing ceramic pieces are not taken. High temperature furnace. When the pieces 1 (1 are exposed to the high temperatures of the furnace, they are realized until their desired structure.) Because the operation of the furnace is a funcionamiento i tensivo of energy, is mportan + e pack a car of furnace with the greater possible quantity of pieces from ceramics to reinforce efficiency. However, if the packaging is very tight and the pieces touch each other during cooking, they will melt with each other. Therefore, the packaging pattern must also ensure that the pieces do not touch each other. Each of these objectives is supported OR by equipping the kiln car with a support structure called "oven cabinet", within which the ceramic pieces can be placed in a suitable way and in a tight but controlled pattern. construction of a design of furniture for oven Typical 5 (as shown in Figure 1), vertical poles are placed within the base of the oven carriage 5. Each of these poles 1 has transverse holes (not shown) that run back and forth at predetermined and identical intervals. Two parallel beams 7 at the same height form a support plane for the spar 8. The parallel spars 8 in turn form support planes for the fiber blocks < 3. The ceramic pieces are loaded onto the fibrous block in the direction indicated by A (ie, between the poles la and Ib). Figure 2 illustrates another prior art design representation previously mentioned in which some of the fibrous blocks are removed, an additional center beam is used, and the peripheral beams are in the inside of the posts. Figure 3 is another prior art design in which the positions of the fiber blocks and the spars are rotated approximately 90 degrees. Although the above-described support structure avoids contact between the ceramic pieces and the packages relatively efficiently, there is a continuing need to improve the efficiency of their design. For example, the design shown in Figure 1 is efficient only when the ceramic pieces are of the same height as the space defined between two intervals. However, when smaller pieces are placed in the structure, a top space is formed between the top of the piece and the next interval. This superior space represents lost production. To minimize estm science, the technique has sought to modify this design. In a modofication, the posts are equipped with many more rows of holes that allow the horizontal beams to be placed at selected heights according to the height of the pieces to be cooked. This flexibility in the height of the rows allows to minimize the upper space. However, it was discovered that in some applications, this design would not resist repeated cooking. Accordingly, there is a need for the development of a superior oven cabinet design that minimizes the upper space and can withstand repeated cooking.

BRIEF DESCRIPTION OF THE INVENTION In a first embodiment of the present invention, an oven furniture assembly is provided consisting of: a) a pair of vertical posts; b) a plurality of short horizontal beams extending from each of said posts at identical intervals and in the same direction, defining at a certain interval the upper surfaces of the pair of beams a horizontal surface, and c) a spar resting on each one of the horizontal surfaces, where each v ga is supported only by the single post from which it extends.

According to the first embodiment, a preferred embodiment of the oven furniture assembly is provided, which consists of: a) a horizontal surface of the oven carriage, b) four vertical posts each having a first end fixed on the horizontal surface of the oven. oven carriage, said posts separated so that the first ends of the poles define a rectangle on the surface of car for oven, c) four horizontal VLgas, one extending from each of said posts to the same height and in the same direction, defining the upper surfaces of the beams a horizontal surface, and d) two beams, each resting on two of the parallel but not coaxial beams, said beams positioned in parallel horizontal relationship to define a horizontal plane, where each beam it is supported only by 'the only post from which it extends. In a second embodiment of the present invention, an oven furniture assembly is provided consisting of: a) two post beams in parallel and horizontal relation, and b) an end block having two ends and a length between them. ends of at least about 762 rnm, wherein each end of the fiber block is supported by one of the two spars and the fiber block is not otherwise supported, and wherein the fiber block consists essentially of carbon carbide. recrystallized silicon. In a third embodiment of the invention a method is provided which consists of: a) forming an oven furniture assembly consisting of: i) a horizontal surface of a baking sheet, 11) four vertical posts each having a first end fixed on the horizontal surface of oven carriage, said posts separated so that the first ends of the posts define a rectangle on the surface of car for oven, i i) cuat or horizontal beams, one extending from each of said posts at the same height and in the same direction, the upper surfaces of the beams defining a horizontal surface inside the posts, two beams, each resting on two of the parallel beams but not coaxial, said beams being in horizontal relation parallel, b) load a block of rectangular fiber on the two spars, the fiber block has pieces of ceramic placed on it, in which the load proceeds p or below the height of the posts, c) cook the pieces, and d) remove the fiber block that has the cooked ceramic pieces placed in the same assembly, in which the removal proceeds below the height of the posts. In a fourth embodiment of the present invention, an oven furniture assembly consisting of a vertical post is provided, and the vertical post consists of: a) upper and lower support blocks, each support block consisting of a support projection comprising extends horizontally and in the same direction, and b) a separating block vertically separating the upper and lower support blocks, and c) means for fixing the position of the support and separation blocks, said means consist of a channel member vertically disposed, wherein at least a portion of at least one of the blocks is cloned within the vertically disposed channel member.

DESCRIPTION OF THE FIGURES Figures 1-3 are drawings of conventional designs of the prior art. Figures 4-5 are drawings of the first embodiment of the present invention. Figures 6-7 are drawings of the fourth embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION The first embodiment of the present invention utilizes a shortened horizontal beam supported by a single pole to thereby increase the available height between each fiber block. It has been observed that when ceramic pieces are loaded into conventional oven furniture designed in accordance with Figure 1, both the vLga 7 co or the spar 8 present themselves in the normal cross section towards the load direction R. These installations should be avoided when the parts are loaded in the R direction, so this valuable space is wasted . It is believed that the presentation of these surfaces in the load cross section commonly reduces the space available for cooking by between approximately 10% and approximately 30%. Therefore, in the first embodiment of the present invention (as illustrated in FIG. 4), the conventional design is modified by replacing the long horizontal beam 7 of FIG. 1 with two shorter honing beams 10 (which only they partially present themselves in the normal cross section towards the loading direction), and eliminating the intermediate beam 8. Because this design allows the elimination of the intermediate beam 8 and reduces the load interference of the beam 7, the height available for loading is increased. Figure 4 describes a typical design for the first embodiment of the present invention. In Figure 4, four vertical posts 1 are placed on the base of the oven carriage. Vertical poles l are separated to define corners of a rectangle when viewed from above. Each post contains transverse holes that extend through them at identical vertical intervals and in the same direction. R through these holes short horizontal beams 10 slide. Because the beams 10 are shorter than the conventional beams 7, they do not reach any other post. When the beams 10 are slid into place, the upper surfaces of a pair of beams from the poles aligned normal to the direction R in a certain interval (that is, the beams 10a and 10b) define a horizontal surface. As shown in Figure 5, this horizontal surface commonly contains a transverse groove 11 for accurate and secure placement of the spar within the post. When the stringers 8a and 8b rest on the beams 10, a second horizontal surface is defined. On this second horizontal surface rests a block of fiber 9. In preferred embodiments, the short beam extends beyond the vertical post only to just pass the inside face of the spar (see, for example, Figure 5). In FIG. 5, the short beam is prevented from moving inwardly by means of its nail head and is prevented from moving outwardly by means of the cross-beam of the transverse groove. In the second embodiment of the present invention, a long bracket block 9 (ie, longer than approximately 762 mm) is provided, which requires only an end bracket. One embodiment of this invention is shown in Figure 4. It is believed that all conventional fiber blocks that were at least 609 nm in length were considered to be so long that they were susceptible to breaking or breaking during cooking. Therefore, conventional fiber blocks either required central beams below them for additional central support or were designed in small dimensions. For example, in FIG. 1, conventional fiber blocks 9 extend only towards the central spar. Consequently, there was no expectation that merely the long fiber blocks supported peripherally would not break or break. However, it was unexpectedly discovered that the fiber blocks of approximately 914 X 457 X 4 rom (made from a recrystallized silicon carbide called CRYSTRR) did not breach 0.0254 m when they were subjected to 30 firings at 1400 ° C and a load of at least about 56 lg. This finding eliminates the need for a center beam and increases the cooking space available for me by using the short horizontal beams described above. In the third embodiment of the present invention, the mechanically assisted and / or robotic handling of the ceramic loaded fiber blocks is provided. Conventional loading and unloading typically required the placement and manual removal of the items in the fiber block. Nevertheless, it has been observed by the present inventors that the space defined between the upper part of the horizontal beam 7 and the bottom of the fiber block 9 in the conventional assembly shown in figure 1 can be exploited for perrnitp a spatula type flat tool for loading and remove the loaded fiber blocks. Since the fiber block 9 and the central beam 8 deploy a fixation of usable height, it is expected that the handling described above facilitates the placement and removal of the loaded fiber blocks of the first embodiment as illustrated in Figure 4. The fourth embodiment of the present invention describes a divided post design. Although the oven cabinet design as illustrated in FIG. 4 improves the space available for cooking, it does not allow the craftsman to adjust the height of each row of beams after the vertical posts are fixed. As illustrated in Figure 6, the split-pole design solves this problem by dividing the conventional vertical pole along its longitudinal axis (resulting in two thinner posts 15), by sliding a first intermediate piece 13a between the two poles. vertical 15, placing the horizontal beam 14 over the top of the first intermediate piece 13a, sliding a second intermediate piece 13b over the top of the horizontal beam 14, and so on, and finally containing the pole divided with the lid 12. This design allows the craftsman to tailor the height at which the horizontal beams are placed in a particular production series - thus minimizing the headroom and improving productivity, but without sacrificing the integrity of the post. It is also contemplated that the H-shaped blocks and posts can be modified to the designs presented in Figure 7 and still achieve their purpose of flexibility between firings. The vertical posts of the present invention may be made of any refractory material typically used for oven furniture posts, including carbides, such as silicon carbide or cordierite. Preferably, the posts are made either by liquid casting or by extruding either silicon carbide bonded to nitride or recrystallized silicon carbide either in one or two pieces. Most preferably, RDVRNCER or CRYSTRR is used, each of which is available from the Norton Company of Uorcester, HA. The posts are typically fixed to the base of the oven carriage by means of a curable and curable material. Typically, the post has a cross section of about 127 rn X 127 and a height of at least about 2,438 rn. The horizontal beams of the present invention can be made of any refractory material typically used for furnace furniture beams, including carbides, such as silicon carbide. Preferably, the poles are made either by liquid casting or extruding either mtride-bonded silicon carbide, silicon carbide silicon or recrystallized silicon carbide either in one or two parts. Most preferably, RDVRNCER or CRYSTRR is used, each of which is available from the Norton Cornpany of Uorcester, Nfl. When used together with the poles of 127 inrn X 127 rnrn X 2,438 rnm, the beams typically measure 50.8 X 50.8 X 203 inrn. The stringers of the present invention are typically made from the same material selected for the horizontal beams. When used in conjunction with the 127 m X 127 mm x 2,438 m rnm posts, the stringers typically measure 38.1 X 38.1 X 1829 rnr. The fiber blocks of the present invention may be made of any refractory material typically used for the fiber blocks of furnace furniture, including carbides, silicon carbide or silicon carbide. Preferably, the fiber blocks are made from CRYSTRR, manufactured by the Norton Cornpany of Uorcester, riR. The present invention can be used in any number of oven furniture applications, including sanitary ware, high and low voltage porcelain, grinding wheels, automotive components, artistic articles and dining room fixtures.

Claims

NOVELTY OF THE INVENTION CLAIMS

1. - On an oven cabinet assembly consisting of: a) a pair of vertical posts; b) a plurality of short horizontal beams extending from each of said posts at identical intervals and in the same direction, defining at a certain interval the upper surfaces of the pair of beams a horizontal surface, and c) a spar resting on each one of the horizontal surfaces, where each beam is supported only by the single post from which it extends.

2. An oven furniture assembly consisting of: a) a horizontal surface of an oven carriage, b) four vertical posts each having a first end fixed to the horizontal surface of the oven carriage, said separate posts for that the first ends of the posts define a rectangle on the surface of the car for furnace, c) four horizontal beams, one extending from each of said posts at the same height and in the same direction, defining the upper surfaces of the beams a horizontal surface, and d) two stringers, each resting on two of the parallel beams but not coaxial, said beams positioned in parallel horizontal relation to define a horizontal plane, where each beam is supported only by the single post from which it is extends.

3. The assembly according to claim 2, which further consists of a fiber block resting on the longitudinal members defining a horizontal plane.

4. An oven furniture assembly consisting of: a) two longitudinal beams positioned in parallel and horizontal relation, and b) a fiber block having two ends and a length between the ends of at least approximately 762 nm, where each end of the fiber block is supported by one of the two spars and the fiber block is not supported in any other way, and wherein the fiber block consists essentially of recrystallized silicon carbide.

5. The oven cabinet assembly according to claim 4, wherein the fiber block has a length of approximately 914 nm, a width of approximately 457 nm, and a thickness of approximately 4 mm.

6. The oven furniture assembly according to claim 4, further comprising: c) a horizontal surface of the oven carriage, d) four vertical posts each having a first end fixed to the horizontal surface of the carriage. for furnace, said poles spaced apart so that the first ends of the poles define a rectangle on the furnace carcass surface, and e) a plurality of parallel horizontal beams extending from each other to the poles at identical vertical intervals and in the same direction, defining at a certain interval the upper surfaces of the pair of beams a horizontal surface, wherein each of the two beams rests on one of the horizontal surfaces defined by the plurality of horizontal beams.

7. The oven furniture assembly according to claim 4, further comprising: c) a horizontal surface of the oven carriage; d) four vertical posts each having a first end fixed to the horizontal surface of the carriage; for furnace, said posts separated so that the first ends of the posts define a rectangle on the furnace car surface, and e) four horizontal beams, one extending from each of said posts at the same height and in the same direction, defining the upper surfaces of the beams a horizontal surface, wherein each of the two beams rests on the horizontal surface defined by the plurality of horizontal beams.

8. A method that consists of: a) forming an oven cabinet assembly consisting of: i) a horizontal surface of an oven car, n) four vertical posts each having a first end fixed to the horizontal surface of the oven. car for ovensaid spaced apart poles so that the first ends of the poles define a rectangle on the kiln car surface, nor) four horizontal beams, one extending from each of said poles to the a. same height and in the same direction, the upper surfaces of the beams defining a horizontal surface within the posts, two beams, each resting on two of the parallel but not coaxial beams, said beams being in a horizontal relation par- alela, b) loading a block of rectangular fiber on the two side rails, the fiber block has pieces of ceramics placed on it, in which the load proceeds below the height of the poles, c) cooking the pieces, and d) removing the block of fiber that has the pieces of ceramics cooked placed on the ism of the assembly, in which the removal proceeds below the height of the posts.

9. The oven furniture assembly consisting of a vertical post, and the vertical post consists of: a) upper and lower support blocks, each support block consisting of a support projection that extends hopontally and in the same direction, and b) a separating block that vertically separates the upper and lower support blocks, and c) means for fixing the position of the support and separation blocks, said means consist of a vertically disposed channel member, wherein at least a portion of at least one of the blocks is positioned within the vertically disposed channel member.

10. The oven cabinet assembly according to claim 9, wherein at least a portion of at least one of the blocks is positioned within the channel member disposed verf cally.

11. The oven cabinet assembly according to claim 9, wherein the vertically disposed channel member consists of a pair of parallel and spaced apart vertical ends having upper ends and a cover connecting to the upper end of each. limb, and on which at least a portion of each block is disposed between the extremities.

12. The assembly according to claim 11, wherein the blocks are connected to each vertical end by means of a male / female connection arranged vertically.

13. The assembly according to claim 9, wherein the blocks and the means for fixing the position of the blocks are fixed by means of at least one vertically disposed connection.

14. The assembly according to the rei indication 9, in which the vertical post is made of a material selected from the group consisting of nitride-bound silicon carbide and recrystallized silicon carbide

15. The assembly in accordance with the claim 9, in which the true posts are made of a material selected from the group consisting of carbides and cordierite.