JPH0650807U - Variable frame type - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a variable frame mold capable of molding a molding base of various sizes with one type. [Structure] A groove 4 is formed on an upper surface of a step portion 1b provided in an opening 1a of a frame body 1. Legs 2 provided on the lower surface of the liner receiver 2
b is inserted into the groove 4, and the bolt 7 is screwed into the fixing member 5 inserted into the groove 4 to fix the liner receiver 2 to the frame body 1. On the other hand, the ridge 3a provided on the rear surface of the liner 3 is inserted into the groove 2a provided on the front surface of the liner receiver 2, and the bolt 8 is screwed into the fixing member 6 inserted into the groove 2a, whereby the liner 3 is received. Fix to 2. By fixing the liner receiver 2 at the position where it abuts against the inner wall surface 1c of the frame and forming a framework closed by the liner 3, the maximum molding space is formed, and the liner receiver 2 is separated from the inner wall surface 1c of the frame most. By forming a framework that is fixed in position and closed by the liner 3, a minimum molding space is created.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a frame die for pressure molding such as tiles, which has a variable inner dimension and is capable of molding products of different dimensions with one type of frame die.

[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 desired product.

By the way, when manufacturing tile products having different sizes, or when products having the same size have different firing shrinkage rates due to differences in raw materials, the size of the molding base is not changed. Don't Therefore, looking at the means for coping with the dimensional change of the molding base, with respect to the frame die 30, various frame dies of various sizes are prepared in advance for a large dimensional change, and an appropriate size is prepared. It is a common policy to replace it with another one. On the other hand, for a dimensional difference such as a difference in firing shrinkage, a method of replacing the liner 31 mounted on the inner wall surface of the frame mold 30 with one having a different thickness is adopted.

[0004]

[Problems to be solved by the device]

 However, it is not preferable to use various types of frame molds 30 having different sizes and liners 31 having different thicknesses, because this leads to an increase in cost.

The present applicant has previously filed a technique for making it possible to form tile bases of different sizes by making the inner dimensions of the frame mold variable (actual fair 2- 5924). However, since the above-mentioned prior art aims to make a slight change in the molding base size in consideration of the difference in firing shrinkage rate due to the difference in raw material, the inner dimension of the frame die is about ± 10 mm. Although it is suitable for increasing or decreasing the number, it is hard to say that it is suitable for making further drastic dimensional changes.

[0006]

[Means for Solving the Problems]

 The present invention provides a variable frame type structure that can cope with a considerably large size change, and is characterized by a frame body and a liner receiver mounted inside the frame body. And a liner mounted on the front surface of the liner receiver, wherein the liner receiver is movable vertically to the inner wall surface of the frame, and the liner is movable along the front surface of the liner receiver. And a fixing means for fixing the liner receiver to the frame and a fixing means for fixing the liner to the liner receiver.

[0007]

[Action]

 In the variable frame type according to the present invention, the liner receiver can move vertically to the inner wall surface of the frame body, and the liner can move along the front surface of the liner receiver. Therefore, after fixing the liner receiver to the frame at a position separated from the inner wall surface of the frame by a required distance, the liner is moved along the front surface of the liner receiver to form a closed frame, thereby reducing the required area. A molding space having can be formed. That is, the closer the fixing position of the liner receiver is to the inner wall surface of the frame, the larger the molding space is formed. Conversely, the farther the fixing position of the liner receiver is from the inner wall surface of the frame, the smaller the molding space is. It is formed.

[0008]

【Example】

 FIG. 1 shows an embodiment of a variable frame type A according to the present invention. The variable frame mold A comprises a frame body 1, four liner receivers 2 mounted inside the frame body 1, and four liner 3 mounted on the surface of each liner receiver 2.

As shown in FIG. 2A, the frame 1 has a square opening 1a at a substantially central position, and as shown in FIG. 2B, one side of the opening 1a has a step portion. 1b is installed around. Further, as can be seen from the drawings, in the upper surface portion of the stepped portion 1b (the vertical direction in FIG. 2B is the vertical direction of the frame body 1), the narrow portion 4a on the inlet side and the inner side are formed. The groove 4 having a convex cross section composed of the wide portion 4b of the frame 1 is perpendicular to the inner wall surface 1c of the frame 1 and extends from the inner side surface 1d of the opening 1a to the end of the step 1b (the position of the wall surface 1c in the frame). , Two are provided in parallel on each side of the square. Each pair of the grooves 4 is arranged so that the two intermediate positions of the grooves 4 are close to the left or right side (the right side in the illustrated example) from the center of each inner side surface 1d. Further, in the wall portion of the frame body 1, screw holes 10 penetrating the inside and the outside are formed at substantially intermediate positions of each set of the grooves 4.

The shapes of the liner receiver 2 and the liner 3 are as shown in FIG. The liner receiver 2 is a substantially rectangular parallelepiped member, and penetrates the front surface in the left-right direction, and has the same shape as the groove 4 of the frame body 1, that is, the narrow portion 2d on the inlet side and the wide portion on the inner back side. 2e and a groove 2a having a convex cross section are formed. Two parallel leg portions 2b corresponding to the grooves 4 of the frame 1 are formed on the lower surface. Further, at a position rearward of the groove 2a, a through hole 2c is formed which vertically penetrates the leg portion 2b.

On the other hand, the liner 3 is a member having a shape called a rectangular parallelepiped having a small depth dimension or a plate having a little thickness. In this embodiment, its length dimension is larger than that of the liner receiver 2 (see FIG. 1). A protrusion 3a corresponding to the groove 2a of the liner receiver 2 is formed in the center of the rear surface of the liner 3, and two to a proper number of through holes 3b are formed at the positions of the protrusions 3a in the front-rear direction. Has been formed.

In this embodiment, a common structure is used for the means for fixing the liner receiver 2 to the frame body 1 and the means for fixing the liner 3 to the liner receiver 2. This will be described with reference to FIGS. 3 and 4. To fix the liner receiver 2 to the frame body 1, the fixing member 5 having the convex portion 5a and the screw hole 5b on the upper surface is inserted into the groove 4 of the frame body 1, and the leg portion on the lower surface of the liner receiver 2 is attached. 2b is inserted into the groove 4 of the frame 1, and the bolt 7 inserted through the through hole 2c of the liner receiver 2 is screwed into the screw hole 5b of the fixing member 5 and tightened. As clearly shown in FIG. 4, the sum of the height of the leg portion 2b of the liner receiver 2 and the height of the convex portion 5a of the fixing member 5 is slightly shorter than the length of the narrow portion 4a in the groove 4 of the frame body 1. Is set. Therefore, by tightening the bolt 7, the upper surface wall portion of the frame body 1 is sandwiched between the lower surface of the liner receiver 2 and the upper surface of the fixing member 5, and the liner receiver 2 is fixed to the frame body 1.

The liner 3 is fixed to the liner receiver 2 by a structure similar to that described above. That is, the liner 3 is mounted on the front surface of the liner receiver 2, and the bolt 8 inserted through the through hole 3 b of the liner 3 is screwed into the screw hole 6 b of the fixing member 6 inserted into the groove 2 a of the liner receiver 2. Since the total height of the protrusion 3a of the liner 3 and the height of the convex portion 6a of the fixing member 6 is set to be slightly shorter than the length of the narrow portion 2d of the groove 2a of the liner receiver 2, The liner 3 is fixed to the front surface of the liner receiver 2 by tightening.

In the fixing structure described above, by loosening the bolt 7, it is possible to move the liner receiver 2 along the groove 4 on the stepped portion 1b of the frame 1 in a direction perpendicular to the inner wall surface 1c. On the other hand, by loosening the bolt 8, it is possible to move the liner 3 on the front surface of the liner receiver 2 along the groove 2a. Therefore, the fixing positions of the liner receiver 2 and the liner 3 are , Can be changed easily.

In this embodiment, a screw hole 10 is formed in the wall portion of the frame body 1 at a substantially intermediate position of each set of the grooves 4 (see FIGS. 1 to 3), and the bolt 9 is inserted in the screw hole 10. Are screwed together to support the rear surface of each liner receiver 2 at its tip (see FIGS. 1 and 4). Based on such a configuration, the force in the expansion direction (retraction direction) acting on the liner receiver 2 via the liner 3 can be supported by the bolt 9 during the pressure molding. Therefore, even if high pressure is applied, the liner receiver 2 can be supported. There is no possibility of causing fluctuation in the fixed position of 2.

Further, in the present embodiment, the bolts 7 and 8 are hexagon socket head bolts, and the heads 7a and 8a of the bolts 7 and 8 are provided in the through holes 2c and 3b of the liner receiver 2 and the liner 3, respectively. An expanded diameter portion for storing is provided (see FIGS. 3 and 4). With this configuration, when the bolts 7 and 8 are fastened to the fixing members 5 and 6 and the liner receiver 2 and the liner 3 are fixed, the bolts 7 and 8 are entirely housed in the through holes 2c and 3b so as not to project. It is possible to

As shown in FIG. 1A, the variable frame mold A configured as described above fixes each liner receiver 2 at a position where it abuts against the inner wall surface 1c of the frame body 1, and When the liner 3 is fixed to the liner receiver 2 at a position where they form a closed framework, a molding space S ₁ having a maximum side length can be formed. On the contrary, as shown in FIG. 1 (B), each liner receiver 2 is fixed at a position as far as possible from the inner wall surface 1c of the frame body 1, and each liner 3 has one end surface of each frame body 1c. When the closed frame is formed by being fixed to the liner receiver 2 at a position where it abuts against the inner wall surface 1c of the above, a molding space S ₂ having a minimum side length is formed.

As shown in FIG. 2, each set of the grooves 4 of the frame body step portion 1b in this embodiment is provided such that the middle position between the two is slightly shifted to the right from the center of the opening inner side surface 1d. Therefore, each liner receiver 2 is moved forward and backward at a position slightly to the right of the center of the inner wall surface 1c of the frame 1. This is to make the distance as large as possible when the liner receiver 2 is moved forward and separated from the inner wall surface 1c of the frame.

As described above, in the variable frame mold A according to the present invention, the size difference between the maximum molding space S ₁ and the minimum molding space S ₂ can be set wide, and within the range, By adjusting the fixing positions of the liner receiver 2 and the liner 3, it is possible to form a molded body having one side having various lengths.

The variable frame type according to the present invention can be applied in various ways. For example, the shape of the molding space is not necessarily limited to the square shape, but may be a rectangular shape, and may be a triangular shape or a polygonal shape. Further, by appropriately selecting the outer diameter dimension of the liner receiver and the liner 3, the range of changing the dimension can be set variously. Besides, the present invention does not prevent various modifications according to the embodiments.

[0021]

[Effect of device]

 As is clear from the above description, the variable frame mold according to the present invention can greatly change the size of the molding space surrounded by the liner, so that one type of frame mold can be used for molding bases of various sizes. It can be molded. Therefore, unlike the prior art, it is not necessary to replace the liner or the frame mold itself when the dimensional change of the molding material is required, so that the working efficiency is improved and the cost is reduced.

[Brief description of drawings]

FIG. 1 shows an embodiment of a variable frame mold according to the present invention, in which (A) is a plan view in which the molding space is maximized,
(B) is a plan view showing a state in which the molding space is minimized.

2A and 2B show a frame body that constitutes the variable frame type shown in FIG. 1, in which FIG. 2A is a plan view and FIG. 2B is XX of FIG.
It is a front sectional view in a line.

FIG. 3 is an exploded perspective view showing a structure for fixing a liner receiver to a frame body and a structure for fixing a liner to the liner receiver in the variable frame mold shown in FIG.

FIG. 4 is a side sectional view of a main part of the variable frame mold shown in FIG.

FIG. 5 is an exploded perspective view showing a conventional molding die.

[Explanation of symbols]

A Variable frame type 1 Frame 1a Opening 1b Step 1c Inner wall surface 2 Liner receiver 2a Groove 2b Leg 2c Through hole 3 Liner 3a Projection 3b Through hole 4 Groove 5 Fixing member 6 Fixing member 7 Bolt 8 Bolt 9 Bolt S ₁ Molding space (at maximum) S ₂ Molding space (at minimum)

Claims (1)

[Scope of utility model registration request] 1. A frame mold for molding tiles and the like, which comprises a frame body, a liner receiver mounted inside the frame body, and a liner mounted on the front surface of the liner receiver. The receiver is movable vertically with respect to the inner wall surface of the frame body, and the liner is movable along the front surface of the liner receiver. The fixing means for fixing the liner receiver to the frame body and the liner receiver A variable frame type, characterized in that it is provided with a fixing means for fixing to.