JPH0650806U - Variable upper mold or lower mold - Google Patents

Abstract

(57) [Abstract] [Purpose] It is possible to attach molding plates of different sizes with one type of top in the upper mold or the lower mold. [Structure] The top 2 is divided into equal parts 3, and leg parts 3a and through holes 3b are provided on the lower surface of each part 3. On the other hand, in the base 4, a groove 5 having a convex cross section that passes through the center of the surface 4a and is orthogonal to
To form. Each of the divided bodies 3 is fixed to the base surface 4a by screwing a bolt 7 inserted into the through hole 3b of the divided body 3 into the fixing member 6 inserted in the groove 5 and tightening the bolt. By moving each divided body 3 along the groove 5 on the base surface 4a and fixing the divided body 3 at a position away from the center by a required distance, it becomes possible to attach a molding plate of a required size.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an upper die or a lower die of a molding die for pressure molding such as tiles, in which molding plates of different sizes can be attached to one type of frame.

[0002]

[Prior art]

 In order to manufacture a tile by a pressure molding method, a raw material powder is usually pressed by using a molding die including an upper die 20, a frame die 30 and a lower die 40 as shown in FIG. Appropriate treatment such as glaze and baking is applied to the shaped body to obtain the intended product.

By the way, when manufacturing tile products having different sizes, it is necessary to change the size of the molding base. For that purpose, in general, the size of each of the upper mold 20, the frame mold 30, and the lower mold 40 is measured. Changes need to be made.

Looking at the means for coping with this dimensional change with respect to the lower mold 40, the top 42 of the base 41 and the molding plate 43 attached to the top of the top 42 are preliminarily arranged in advance. A generally adopted method is to prepare a variety of products of various sizes, select the one suitable for the size of the molding base to be obtained, and replace it with them. Is. The reason why it is necessary to replace the molding plate 43 together with the molding plate 43 is that the molding piece 43 also corresponds to the size of the molding plate 43 in order to prevent the molding plate 43 from being deformed by high pressure during press molding. This is because it must have a large attachment area.

[0005]

[Problems to be solved by the device]

 As described above, conventionally, it has been necessary to prepare various sizes for the molding plate 43 and the top 42 in order to change the dimensions of the molding base. Therefore, there is a drawback in that cost rises when trying to diversify products.

Further, in general, the top 42 is fixed by a bolt inserted from the back surface side of the base 41. Therefore, when replacing the top 42, it is necessary to loosen the bolts from the back side of the base 41 and remove it. However, since the base 41 itself is also usually fixed to the pressure molding machine, it is necessary to attach and detach the base 41 in order to replace the top. In addition, are both the base 41 and the top 42 heavy. However, there is an inconvenience that the work is complicated and heavy labor.

[0007]

[Means for Solving the Problems]

 The present invention provides a technique capable of attaching molding plates of different sizes to each other in an upper die or a lower die without removing the base from a molding machine or the like with one type of top. The feature of the upper mold or the lower mold according to the present invention is that it comprises a base, a top attached to the surface of the base, and a molding plate attached to the surface of the top. Is composed of a plurality of divided bodies, and each divided body of the top is movable back and forth in the direction from the center to the outer periphery on the base surface, and each divided body of the top is moved from the surface side to the base. That is, it is provided with a fixing means.

[0008]

[Action]

 As described above, the conventional top needs to have an attachment area corresponding to the size of the forming plate. In other words, the size of the molding plate determines the size of the molding plate that can be attached to it. However, in the present invention, the pieces are divided into a plurality of divided bodies, and each divided body is moved on the surface of the base and fixed at a position separated by a required distance from the center, so that one type of pieces has different sizes. It is now possible to attach the molding plate of the wood. The area of the attachable forming plate is the smallest when the divided pieces of the top are gathered at the center of the base surface. When the pieces of the top are moved from the center of the base surface toward the outer circumference, the pieces are placed separately from each other. Expands. When each divided body is fixed to the outer peripheral edge of the base surface, the distance from the center becomes the largest, so that the area of the forming plate that can be attached becomes the maximum. According to the present invention, by appropriately setting the fixing position of each divided body within the above range, it is possible to attach molding plates of various sizes.

[0009]

【Example】

 FIG. 1 shows an embodiment of a variable lower mold A in which the present invention is applied to a lower mold of a molding die. The basic structure of the variable lower mold A is composed of a molding plate 1, a piece 2 to which the molding plate 1 is attached, and a base 4 to which the piece 2 is attached, as in the conventional case.

The molding plate 1 is composed of a plate body 1a and a liner 1b mounted on the side peripheral surface thereof.

The top 2 in the present invention is an assembly of a plurality of divided bodies 3. In this embodiment, each of the divided bodies 3 is a triangular prism whose planar shape is an isosceles right triangle, and when the right-angled tops are gathered at the center of the base surface 4a, they are attached to the attachment surface of the forming plate 1. The surface of the frame 2 is formed into a square (see FIG. 3).

A structure in which each divided body 3 of the top 2 is attached to the surface 4 a of the base 4 is shown in FIGS. 2 and 3. The base 4 is a plate-shaped body having a square planar shape, and two grooves 5 having a convex cross section with a narrow portion 5a on the inlet side and a wide portion 5b on the inner back side are formed on the surface 4a. It is formed so as to pass through the center of the front surface 4a and be orthogonal to each other so as to divide the surface 4a into four squares.

On the other hand, each divided body 3 of the top 2 has a leg portion 3a corresponding to the groove 5 projecting from the lower surface thereof, and the divided body 3 is vertically penetrated at the position of the leg portion 3a. Two to an appropriate number of through holes 3b are formed.

In order to fix the divided body 3 to the base 4, the fixing member 6 having the convex portion 6a and the screw hole 6b on the upper surface is inserted into the groove 5 of the base 4 and the leg portion 3a of the divided body 3 is inserted. Is inserted into the groove 5 of the base 4, the bolt 7 is inserted into the through hole 3b of the divided body 3, and the bolt 7 is screwed into the screw hole 6b of the fixing member 6 and tightened. As shown in FIG. 3, the total height of the leg portions 3a of the split body 3 and the height of the convex portions 6a of the fixing member 6 is set to be slightly shorter than the length of the narrow portion 5a of the groove 5 of the base 4. Has been done. Therefore, by tightening the bolt 7, the surface portion of the base 4 is sandwiched between the lower surface of the divided body 3 and the upper surface of the fixing member 6, and the divided body 3 is fixed to the base 4. Further, when the bolt 7 is loosened, each divided body 3 can move along the groove 5 on the surface 4 a of the base 4.

A means for attaching the molding plate 1 to the top 2 is shown in FIG. In this embodiment, a liner 1b mounted on the side surface of the plate body 1a is provided with a downward extension portion, and a bolt 8 penetrating the extension portion is screwed into the side surface portion of each divided body 3 of the top 2 and tightened. The means is adopted.

Further, in the present embodiment, the bolt 7 is a hexagon socket head bolt, and each through hole 3b of the divided body 3 is provided with an enlarged diameter portion for accommodating the head portion 7a of the bolt 7. With this configuration, when the divided body 3 is fixed to the base 4 by tightening the bolt 7, the entire bolt 7 is housed in the through hole 3b and does not project from the divided body 3.

The variable lower die A configured as described above can be attached when the divided bodies 3 are fixed at the position where they are gathered at the center of the base 4, as shown in FIG. The area of the molding plate 1 is minimized. On the contrary, as shown in FIG. 3B, when each divided body 3 is fixed to the outer peripheral edge portion as far as possible from the center of the base 4, the attachable area of the molded plate 1 becomes maximum. Therefore, in the variable lower mold A, the molding plates 1 having different areas can be attached by adjusting the fixing position of the divided body 3 within the above range.

The case where the present invention is applied to the lower mold of the mold has been described above, but it goes without saying that the present invention can be applied to the upper mold of the mold.

The embodiment of the present invention can be applied in various ways other than the above. For example, as shown in FIG. 5, the division body 3 of the top 2 is formed into a prismatic shape having a square planar shape, and a groove 5 is formed along the diagonal line on the surface 4a of the base 4 to form the division body 3 It can also be configured to move on the surface 4a in its diagonal direction.

Further, as shown in FIG. 6, an immovable portion may be provided at the center position of the base surface 4 a of the top 2 to serve as the support column 3 c of the molding plate 1.

Further, in each of the divided bodies in the illustrated embodiment, the top is divided into four equal parts, but this is not a limitation, and the number, shape and moving direction of the divided bodies are different from each other. It can be appropriately selected depending on the shape of the product to be manufactured.

Besides, the present invention does not prevent various modifications according to the embodiments.

[0023]

[Effect of device]

 As is clear from the above description, in the present invention, the top is composed of a plurality of division bodies, and each division body is movable on the base surface. Therefore, the division bodies can be moved by the required distance from the center of the base surface. By fixing it to a remote position, it is possible to attach a forming plate of the required size. In other words, since it is possible to attach molding plates of different sizes to one type of frame, it is not necessary to prepare many types of frames as in the conventional case, which leads to cost reduction.

Further, in the present invention, since each divided body forming the top is fixed to the base from the front side, the moving operation of each divided body of the top can be performed without removing the base from the molding machine or the like. can do. Therefore, the work load is greatly reduced compared to the conventional method in which the bases were removed and the tops were replaced.

[Brief description of drawings]

FIG. 1 shows an embodiment in which the present invention is applied to a lower mold, and is an exploded perspective view of a movable lower mold with a molding plate removed.

FIG. 2 is an exploded perspective view showing a structure in which a divided body of the movable lower die shown in FIG. 1 is attached to a base.

FIG. 3 is a side sectional view showing a main part of the movable lower die shown in FIG.

4A and 4B are plan views showing a state in which a molding plate is removed from the movable lower die shown in FIG. 1, in which FIG. It shows a state in which each of the divided pieces of the top has been moved to the outer peripheral edge portion of the base surface.

FIG. 5 is a plan view showing another embodiment of the lower movable die according to the present invention with the molding plate removed.

FIG. 6 is a plan view showing still another embodiment of the movable lower die according to the present invention with the molding plate removed.

FIG. 7 is a perspective view showing a conventional molding die in an exploded manner into an upper die, a frame die, and a lower die.

[Explanation of symbols]

 A Movable lower mold 1 Molded plate 2 Frame 3 Divided body of frame 3a Leg 3b Through hole 4 Base 4a Base surface 5 Groove 6 Fixing member 6a Projection 6b Screw hole 7 Bolt

Claims (1)

[Scope of utility model registration request] 1. An upper mold or a lower mold for molding a tile or the like, which comprises a base, a top attached to the surface of the base, and a forming plate attached to the surface of the top. ,
The top is composed of a plurality of divisions, and each division of the top is movable back and forth in the direction from the center to the outer periphery on the base surface, and each division of the top is from the front side. A variable upper mold or lower mold, which is provided with means for fixing to a base.