JPS6361167B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mold for molding bricks and tiles.

Traditionally, molds used to simultaneously mold multiple bricks and tiles back-to-back have a
The structure shown in the figure is known.

To explain the drawings, a support rack 1 holds a desired number of medium molds 2 by screwing them through support rods 3, and horizontally places them on the back side of a substrate 4, that is, in the center of the side from which the material material flows, and supports the legs of the support rack 1. A mold 6 is screwed to the center of the front side of the substrate 4, and the medium mold 2 and the mold 6 are combined to form the raw product a shown in FIG. There is.

When the support rack 1 is inserted into the opening 8 of the opening plate 7 and the substrate 4 is screwed onto the opening plate 7 installed in the opening box 9, and the molding extruder (not shown) is started, the dough passes through the sleeve 10 and enters the opening box. 9, it passes over the support frame 1 and enters the mold 6, and comes out as a raw product a having a cross-sectional shape b.

However, in this type of system, in order to replace a damaged or worn medium die 2, the heavy board 4 must be removed from the opening plate 7, and since the medium die 2 is located at a long distance from the mounting part of the support rack 1, it is difficult to fix the medium die 2. Due to the lack of quality, the distance between the medium molds 2 or between the inner walls of the mold 6 tends to become unstable, and there may also be vertical deviations, resulting in a lack of consistency in the cross-sectional shape b of the raw product a, and also causing cracks. Moreover, during firing, the way the fire hits the inner and outer surfaces is markedly different, resulting in a large difference in the degree of burntness between the inside and outside of the raw product A, which tends to cause warping and poor cutting, and increases the risk of drying and firing. The efficiency is low and when separating into two pieces, there are many adhesion parts, so more force is required, and therefore it is easy to break, as shown in Figure 3, when the product c is obtained, the back side d looks bad. There was a problem with that.

The present invention has been made with attention to these problems, and the mold is mounted directly on the mouth plate by eliminating the substrate, and the support frame is shaped and structured by cutting a flat steel plate as it is. This problem was solved by replacing it with a simpler one, forming a medium-sized group, and holding it firmly, dramatically improving the quality of the raw product, increasing the efficiency of inspection and maintenance, and reducing production costs.

Hereinafter, one embodiment of the present invention will be described based on FIG. 4 and subsequent figures.

Note that the same configurations as those of the conventional example are denoted by the same reference numerals, and detailed explanation thereof will be omitted.

11 is a rectangular opening 1 into which the mold 12 is fitted;
It is a mouth plate with 3 opened in the center.

Reference numeral 14 denotes a medium-sized support frame to which a desired number of medium-sized groups 15 are screwed; 16 is a horizontal rod portion of the medium-sized support frame 14 that is perpendicular to the flow direction of the fabric and has a streamlined cross-sectional shape; 17 is a hollow group; 15 are the support rods to which these are screwed, and 18 are the legs of the medium-sized support frame 14.

The mold 12 has a rectangular parallelepiped shape, and the opening 1 of the mouth plate 11
Cut both the left and right sides to a size that will fit into Step 1.
9 is formed, and this stepped surface is made to be in close contact with the surface of the mouth plate 11.

A desired number of forming holes 21 pass through the mold 12 through an intermediate mirror 20 so as to form the outer shape of the material dough, and the inner surface thereof is all hardened. At the center of the left and right sides of the back surface 22, there are legs 18 of a medium-sized support frame 14,
Engagement grooves 23, 23 into which 18 is fitted are formed. Further, at the left and right centers of the front surface 24 and at the center of the middle mirror 20, projections 25 are provided by screwing support plates 26 to form a thin groove f at the outer center of the raw product e.

The medium size group 15 is formed by connecting the side surfaces of a required number of medium sizes 27 formed in the shape of a flat rectangular parallelepiped in horizontal rows by thin-walled connecting parts 28, and the outermost side surface of the medium size 27 formed at the outermost side has a shaft. A blade portion 29 is formed extending in the direction, and the tip of the medium group 15 forms a wedge shape laterally, and is inserted into a wedge-shaped notch at the tip of the support rod portion 17 and screwed with a small screw 30 to form a horizontal rod. Part 16
maintain a parallel position and strengthen the bond.

To assemble these, the legs 18, 18 are engaged with the engagement grooves 23, 23, respectively, the medium-sized support frame 14 is assembled to the mold 12, the mold 12 is connected to the mouth plate 11, and the mounting bracket is 31, 31 and bolt V,
Screwed together by V.

Next, the operation will be explained based on the above configuration. The material dough for bricks or tiles extruded from the molding mouth of the extrusion molding machine goes from the sleeve 10 to the mouth box 9, passes over the medium-sized support frame 14, and passes through the molding machine. The dough flows into the forming hole 21 of the mold 12, but at that time, the dough is separated once at the horizontal rod portion 16 of the intermediate mold support frame 14, but the horizontal rod portion 16
is formed to have a streamlined cross-sectional shape that suppresses flow resistance, so separation or recombination of the fabric is performed extremely smoothly, reducing the pressure applied to the horizontal rod portion 16, and reducing the pressure on the supporting rod portion 17 and the flowing fabric. Coupled with the medium size group 16 having a wedge-shaped tip in which the biting amount increases, the flow of the dough becomes smooth, and the medium size group 1
5 and a protrusion 25 provided on the front surface 24 of the mold 12
As a result, narrow grooves f and cavities g of a predetermined depth and width are always formed in the molded raw product e.

As described above, according to the present invention, when the dough is introduced into the mold, not only the medium-sized group is firmly held even if the dough is relatively hard or contains solids, but also each Because the medium molds are connected and integrated, there is no deviation in mutual spacing or vertical position, and the narrow grooves and cavities of the raw product are formed uniformly. Furthermore, the internal surface area has been expanded, and the drying and firing conditions are evenly distributed inside and outside, which not only shortens the time, but also
Problems such as warping, cracking, cuts, and bulges are less likely to occur.

In addition, since there are only two adhering parts after firing, it can be easily separated by a light blow, so there is no chipping or damage, and the product h also has a clean backside i finish, which significantly improves the quality yield.

In addition, the medium-sized support frame has been improved by molding it as a flat steel plate and fitting it with legs and engagement grooves.
Because it is smaller, lighter, and has a simpler shape,
Not only can the production time and cost be significantly reduced, but there is also less risk of breakage, inspection and maintenance are simplified, and installation is easier and less slippery, and the time required for installation can be shortened.

In addition, since the substrate is eliminated and the mold is attached directly to the mouth plate, the weight can be reduced, the number of man-hours for attachment and detachment can be omitted, and costs can be saved.

Furthermore, since the medium-sized group can be attached and detached from the medium-sized support frame, even if replacement or repair is required due to wear or damage from long-term use, only the required medium-sized group can be removed and attached from the molding opening while still attached to the mold, making it extremely convenient. As mentioned above, the present invention has the effect of significantly improving production, process, and quality management.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view of a conventional mold and a perspective view of the discharge section of an extrusion molding machine; Fig. 2 is a perspective view showing a cross section of some raw products molded by the conventional mold; Fig. 3 is a perspective view of a part of the product, Fig. 4 is an exploded perspective view of the mold of the present invention and a perspective view of the discharge section of the extrusion molding machine, and Fig. 5 is a perspective view of a part of the product formed by the mold of the invention. FIG. 6 is a perspective view of a part of the product, FIG. 7 is a perspective view of the surface of the mold of the present invention, and FIG. 8 is a perspective view of the surface of the mold of the present invention. FIG. 9 is a perspective view showing the back side of the mold, and is also an exploded perspective view of the medium group and the tip of the support rod. 11... Mouth plate, 12... Mold, 14... Medium size support frame, 15... Medium size group, 16... Horizontal rod portion, 17...
... Support rod, 18 ... Leg, 21 ... Molding hole, 23
...Engagement groove, 25...Protrusion, 27...Medium size, 28
...Thin connection part, 29...Blade part.

Claims (1)

[Scope of Claims] 1. An engagement groove is formed on the back surface of the mold body in which the molding hole is formed, and the legs of the medium-sized support frame are engaged and fixed to the engagement groove, and the horizontal rods of the medium-sized support frame are A mold for molding bricks and tiles, comprising a group of medium molds formed by connecting a desired number of medium molds to a desired number of support rods branching from a section. 2. The above-mentioned medium-sized group is formed by connecting a desired number of medium-sized molds in horizontal rows by thin-walled connecting portions provided along the axial direction of the side surfaces, and screwed onto the supporting rod portions. The mold for molding bricks and tiles according to item 1. 3. The mold for molding bricks and tiles according to claim 1, wherein the medium mold group has a blade portion formed on the side surface of the outermost medium mold. 4. The mold for molding bricks and tiles according to claim 1, wherein the molding hole is located on the horizontal axis of the medium group and forms a desired protrusion.