JP2006051628A - Cutting die and tool used therein - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cutting die enhanced in workability at production of a concrete block, having high durability and simple in its structure, and a tool used therein. <P>SOLUTION: The cutting die 10 is used for forming the concrete block 110 having a through-hole, a bottomed hole or a groove and equipped with a mold body 11 having the same shape as the outer shape of the cutting die and a plurality of the ribs 13 arranged to the surface coming into no contact with concrete formed into the concrete block of the mold body 11 at production of the concrete block to transmit the impact applied from the outside to the mold body. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a die that is suitable for use in forming a concrete block having a through hole, a bottomed hole, or a groove, and a jig used for the die.

  In general, lifelines such as electricity, gas, water, and telephone that are indispensable for people's lives are delivered to each house via piping buried in the ground. A concrete block or the like is used to fix the pipe in the ground. The concrete block is formed with a through hole, a bottomed hole or a groove into which a pipe such as a cylindrical tube or a U-shaped groove is inserted or engaged. Piping is fixed in the ground by being inserted into a through-hole or the like of a concrete block buried in the ground.

Here, the concrete shape of the concrete block is as follows. As shown in FIG. 12, the concrete block 100 in which the support groove 101 for supporting the U-shaped groove 102 is formed, and the cylindrical tube 112 is supported as shown in FIG. There are concrete blocks 110 and the like in which support holes 111 are formed. This method for manufacturing a concrete block includes a mold forming process, a concrete placing (filling) process, a mold removing process, and the like.
The concrete block 100 is supported by engaging the U-shaped groove 102 with the support groove 101, but a rectangular support hole is formed like the concrete block 110, and the U-shaped groove 102 is formed in the support hole. It may be supported by being hooked.

  First, in the mold forming step, the ends of the five pallet plates are assembled so as to be orthogonal to each other to form a mold that forms a bottomed cylindrical rectangular parallelepiped. These five pallet plates correspond to the five surfaces of the block. A cylindrical or prismatic die is fixed at a predetermined position on the bottom plate to form a die.

Next, in the concrete placing (filling) step, the concrete before hardening is poured into the mold.
In the mold removing step, the concrete block is formed by removing the mold and the plate after the concrete is dried and hardened.

  The dimensions of the above-described cylindrical tube, U-shaped groove, etc. are determined by the standard. For this reason, the shape of the die for forming the hole or groove having these outer shapes in the concrete block is determined according to this standard. Therefore, in a factory or the like that manufactures a concrete block, it is necessary to prepare a die cutout corresponding to the standard in advance.

  On the other hand, the die-cutting material includes steel (steel or steel), polystyrene foam and the like. Steel punching has the advantage of long life with no damage even if it is used repeatedly. However, due to its heavy weight, it takes time to transport the die, fix it to the pallet plate, etc., and rust occurs. Has the disadvantage that it must be rust-removed and work efficiency is poor.

  On the other hand, although the cut-out made of polystyrene foam has the advantage of good work efficiency because it is lightweight, the material is fragile, so the number of times it can be reused is as few as 2-3 times. Furthermore, polystyrene foam is subject to the recent problems of industrial waste that causes environmental pollution and is expensive to dispose of. For this reason, there is a drawback that a die cut made of styrene foam that is less frequently used has a high cost for disposal.

  Further, as a method for easily removing a die when manufacturing a concrete block, there is a die-cutting as disclosed in Patent Document 1. This die is provided with a rubber tube on the outside of a perforated tube forming the outer shape of the die. In the concrete block manufacturing procedure, concrete is placed after the die is fixed in the mold. Next, air is pumped into the perforated pipe to expand the rubber tube, and after the concrete has hardened, the air is discharged to deflate the rubber tube, and the perforated pipe and the rubber tube are extracted from the hardened concrete. . Thereby, the die can be easily extracted from the hardened concrete.

  However, the die-cutting described in Patent Document 1 described above not only complicates the structure, but also requires an external device such as an air pump that pumps air, which increases costs.

On the other hand, the above-described die cutting made of steel (steel or steel) or polystyrene foam has advantages and disadvantages and cannot be said to be a die cutting suitable for the production of concrete blocks.
Japanese Patent Laid-Open No. 9-196245

  The present invention has been made in view of the above problems, and has an object to provide a die-cutting and a jig used for the die-cutting that improve workability at the time of manufacturing a concrete block, have high durability, and have a simple structure. To do.

In order to solve the above-described problems, a die provided by the present invention is a die used for forming a concrete block having a through hole, a bottomed hole, or a groove, and a die main body that forms an outer shape of the die. The mold body includes a plurality of ribs that are disposed at predetermined positions on a surface that does not contact the concrete for forming the concrete block when the concrete block is manufactured, and that transmits impact applied from the outside to the mold body. It is characterized by that.
The said structure WHEREIN: It is preferable that the said rib is a columnar body extended in parallel with the axis | shaft extended substantially orthogonally to the said non-contact surface, and was embed | buried under the said mold main body.
The said structure WHEREIN: It is preferable that the said rib is a columnar body extended in parallel with the axis | shaft extended substantially orthogonally to the said non-contact surface, and penetrated the said mold main body.
The said structure WHEREIN: It is preferable that the said rib is a disk stuck on the predetermined position of the said surface which does not contact.
The said structure WHEREIN: It is preferable that the said type | mold main body is formed with a thermosetting resin.
The said structure WHEREIN: It is preferable that the said rib is wooden.
The said structure WHEREIN: It is preferable to provide the fixing | fixed part which fixes the said mold main body with adjustment allowance in the mold frame for forming the external shape of the said concrete block in the said mold main body.

It is a jig used for the above-mentioned die cutting, the tip extends to a predetermined position of the surface that does not contact, and the shape is provided with a plurality of leg portions where the starting ends intersect at one point, and by giving an impact to the starting end from the outside, This impact is transmitted from each tip to the mold body via a rib.
The said structure WHEREIN: It is preferable that the said jig for a die-cutting is wooden.

  The die-cutting according to the present invention has a simple structure, and can improve workability at the time of manufacturing a concrete block and improve durability. Furthermore, with the improvement in durability, the number of disposal processes can be greatly reduced as compared with the conventional case, and the cost can be reduced.

Embodiments of the present invention will be described below with reference to the drawings.
<Embodiment>
A die 10 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 11.

(1) Structure of die-cutting FIG. 1 is a perspective view showing a die-cutting 10 and a jig 20 according to the present embodiment, and FIG. 2 (FIGS. 3 and 4) is a longitudinal sectional view seen from the direction of arrows II-II in FIG. is there.
First, the die 10 has a die body 11, a fixing hole 12, a rib 13 and a mark 14, and this die 10 is used to form a support hole 111 for the concrete block 110.

  The mold body 11 forms the outer shape of the die 10 and is formed in a columnar shape by, for example, a thermosetting resin. Here, the thermosetting resin is a synthetic resin having a high degree of polymerization when heat is applied and having thermosetting properties. For example, a phenolic resin, a urea resin, a silicon resin, or the like that can be bonded in a net form. Refers to a molecular compound. In particular, since the concrete culturing temperature is about 50 to 60 ° C. when it is high, a thermosetting resin excellent in heat resistance is the best.

  The fixing hole 12 is a hole that is formed in a slit shape in the radial direction of the mold body 11, and is a hole that is used to fix the die 10 to the mold frame 30 when the concrete block 110 is manufactured. By forming the fixing hole 12 in a slit shape, an adjustment margin for fixing the die 10 to the fixing plate 31 of the mold 30 is provided.

The ribs 13 are located on the surface where the mold body 11 does not come into contact with the concrete for forming the concrete block 110 when the concrete block 110 is manufactured, and are embedded at four points that are spaced a predetermined distance from the approximate center of the surface. ing. As shown in FIG. 2, the rib 13 is made of, for example, a wooden column extending in parallel with an axis substantially orthogonal to the non-contact surface, and is buried in the mold body 11 so that the tip portion is not exposed.
The mark 14 is formed by sticking a rubber plate in order to identify the position of the rib 13 embedded in the mold body 11. This is to prevent the contact portion 23 of the jig 20 from directly hitting the mold body 11 and prevent the mold body 11 from being damaged.
Each rib 13 transmits an impact applied from the jig 20 to the outside of the mold body, and the impact of the mold body 11 on the support hole 111 of the concrete block 110 is released by the impact.

  Note that the structure of the die 10 is not limited to that shown in FIG. 2, and the rib 13 </ b> A may be provided so as to penetrate the frame main body 11 </ b> A as, for example, a wooden pillar 10 </ b> A shown in FIG. 3. Moreover, you may make it stick the wooden disc-shaped rib 13B on the predetermined position of the type | mold main body 11B like the cutting die 10B shown in FIG. The rib 13B is for preventing the contact portion 23 of the jig 20 from directly contacting the mold body 11 and preventing the mold body 11 from being damaged.

(2) Structure of Jig Next, as shown in FIG. 1, the jig 20 is formed in a substantially cross shape, and has a leg portion 22 that extends in a direction substantially perpendicular to the center with a starting portion 21 as a center. It is the structure which comprised the contact part 23 located in the front-end | tip of this, and contact | abutted to the rib 13. FIG. As shown in FIG. 8, the jig 20 has a cross section in which the starting end portion 12 protrudes from the leg portion 22 to one side and the contact portion 23 protrudes from the leg portion 22 to the other side. Further, the jig 20 is made of wood and is reduced in weight.
The jig 20 abuts each abutting portion 23 on the rib 13 and applies an impact to the starting end portion 21 with a hammer H or the like, so that the impact is applied to the rib 13 via each mark 14. Transmit at the same time.

(3) Manufacturing method of concrete block 110 Next, the manufacturing process of the concrete block 110 is demonstrated, referring FIGS. In this manufacturing method, in the same manner as the manufacturing method of the prior art, the mold forming process → the concrete placing process → the mold removing process.

(A) Mold Forming Process First, in the mold forming process, as shown in FIG. 5, the bottom plate 31 and the four side plates 32, a total of five plate bodies, are assembled so as to be orthogonal to each other. A mold 30 forming a cylindrical cuboid is formed. The five bottom plates 31 and side plates 32 correspond to the five surfaces of the concrete block 110.

  On the other hand, the columnar die 10 is fixed to a predetermined position of the bottom plate 31. Specifically, as shown in FIG. 6, the fixing hole 12 of the die 10 is inserted into the bolt 31A planted in the bottom plate 31, and the slit-shaped fixing hole 12 is slid with respect to the bolt 31A. Thus, the die 10 is slid in the direction indicated by the arrow a and adjusted to the desired position of the mold 30. Thereafter, a washer 31B and a nut 31C are screwed onto the bolt 31A, and the die 10 is sandwiched between the bottom plate 31 and the washer 31B. Thereby, the die 10 is fixed at a desired position of the mold 30. In addition, the length dimension of the fixing hole 12 becomes an adjustment allowance for the die 10 with respect to the mold 30.

(B) Placing Step Next, in the concrete pouring step, the uncured concrete is poured into the mold 30.

(C) Mold removal process The mold removal process forms the concrete block 110 by removing the die 10 and the mold 30 after the concrete is dried and hardened (see FIG. 7).
The outer periphery of the mold body 11 and the concrete block 110 are firmly fixed by the influence of the dry and hardened concrete. Therefore, in this embodiment, as shown in FIG. 8, the die 10 is removed from the concrete block 110 using the jig 20.

More specifically, in the operation of extracting the punching die 10 from the concrete block 110, the abutting portion 23 of the jig 20 is brought into contact with the mark 14, and then the starting end portion 21 of the jig 20 is tapped with a hammer H. As a result, the generated impact is transmitted in the following manner: the starting end portion 21 → the leg portion 22 → the abutting portion 23 → the mark 14 → the rib 13 → the mold body 11, and is uniformly transmitted to the outer periphery of the mold body 11 almost simultaneously. Due to this impact, the die body 11 (the die 10) is released from being fixed to the support hole 111 of the concrete block 110.
Thus, by using the die 10 and the jig 20 according to the present embodiment, the die 10 can be easily extracted from the concrete block 110.

(4) Effects of the Embodiment In the punching die 10 and the jig 20 according to the present embodiment, the impact is uniformly applied to the outer periphery of the die body 11 at the same time by tapping the start end 21 of the jig 20 with the hammer H in the mold removing process. It is transmitted and the fixation is released, and the die 10 can be easily removed from the concrete block 110.

  Moreover, since the die 10 is made of thermosetting resin and wood, and the jig 20 is made of wood, the weight is reduced, so that the work is easier and easier to work than the steel die. It can be greatly improved.

  Furthermore, since the mold body 11 that forms the outer shape of the mold 10 is formed of a thermosetting resin, the durability can be greatly increased compared to a mold made of polystyrene foam. For example, while a polystyrene foaming die could only be used for producing a concrete block 2 to 3 times, the die 10 according to this embodiment can be used 20 times or more even in the experimental stage. . Thereby, when the cutting die 10 by this embodiment is used, the expense which concerns on disposal can be reduced significantly compared with the case where the cutting die made from a polystyrene foam is used, and cost reduction can be aimed at.

(5) Modifications In the above-described embodiment, the case where the outer shape of the cutting die is a cylindrical shape has been described as an example, but it may be a rectangular column shown in the cutting die 40 of FIG. 9. This die 40 has a die body 41, a fixing hole 42 and a rib 43, and this die 40 is used to form the support groove 101 of the concrete block 100.
Further, as in the plan view shown in FIG. 10, a shape like a die 50 for a tube with a stand may be used. The die 50 has a die body 51, a fixing hole 52, and a rib 53.
Furthermore, in the said embodiment, although the shape of the type | mold main body made the upper surface and the lower surface the same shape, this invention is not restricted to this, and it goes to the side from the upper surface to the lower surface like the cutting die 10 'shown in FIG. A taper that contracts may be formed. By providing this taper, it is possible to easily remove the die 10 'from the concrete block in the mold removing step, and the workability can be further improved. Moreover, since the through holes, bottomed holes, or grooves of the manufactured concrete block are also tapered, it is possible to easily perform the insertion work by inserting the piping from the wide side to the narrow side. It becomes.

  In the above-described embodiment, the rib 13 has a structure in which the four ribs 13 are provided on the outer peripheral side of the die 10. However, the present invention is not limited to this, and a plurality of 2, 3, 5,. Accordingly, the number of leg portions 22 of the jig 20 may be matched to the number of ribs.

The fixing method of the die 10 with respect to the bottom plate 31 is not limited to the fixing structure using the slit-shaped fixing hole 12 and the bolts and nuts, but may be any configuration that can be fixed with an adjustment margin. For example, a bolt may be implanted in the die 10, a beam having a slit-like groove through which the bolt is inserted is provided in the mold, and the die 10 may be fixed to the mold by fixing the bolt 10 to the beam. .
Furthermore, by forming the slit-shaped fixing holes in a cross shape orthogonal to each other, it is possible to widen the adjustment allowance of the die 10.

It is a perspective view which shows the cylindrical die-cutting and jig concerning Embodiment of this invention. It is the longitudinal cross-sectional view of the cutting die seen from the arrow II-II direction in FIG. It is the longitudinal cross-sectional view of the cutting of another structure different from FIG. 2 seen from the arrow II-II direction in FIG. It is the longitudinal cross-sectional view of the cutting of the structure different from FIG. 2 seen from the arrow II-II direction in FIG. It is a figure which shows the formwork formed in the formwork formation process. It is a figure which shows the principal part at the time of fixing a cutting die to a formwork. It is a figure which shows the concrete block and mold which were formed in the placement process. It is a figure which shows the state which cancels | releases the sticking of the cutting die with respect to a concrete block using a jig. It is a perspective view which shows the rectangular parallelepiped die-cutting and jig by a modification. It is a top view which shows the cutting die for pipes with a base by a modification. It is a perspective view which shows the cutting die by which the side surface by the modification became a taper. It is a figure which shows the concrete block which supports the U-shaped groove | channel by a prior art. It is a figure which shows the concrete block which supports the cylindrical pipe | tube by a prior art.

Explanation of symbols

10, 10 ', 10A, 10B, 40, 50 ... die cutting,
11, 11 ′, 11A, 11B, 41, 51...
12, 12 ', 12A, 12B, 42, 52 ... fixing holes,
13, 13A, 13B, 43, 53 ... ribs,
14, 14 '... mark,
20 ... Jig,
21 ... the starting end,
22 ... Legs,
23 ... abutting part,
30 ... Formwork,
31 ... bottom plate,
32 ... side plate,
100, 110 ... concrete blocks,
101 ... support groove,
111 ... support hole.

Claims (9)

A die used to form a concrete block with through holes, bottomed holes or grooves,
A mold body forming the outer shape of the mold,
A plurality of ribs that are arranged at predetermined positions on a surface that does not come into contact with the concrete for forming the concrete block at the time of manufacturing the concrete block, and that transmit an external impact to the mold body;
Die-cutting characterized by having The die cutting according to claim 1,
The rib is a columnar body that extends in parallel with an axis extending substantially orthogonal to the non-contact surface and is embedded in the mold body. The die cutting according to claim 1,
The said rib is a columnar body extended in parallel with the axis | shaft extended substantially orthogonally to the said non-contact surface, and penetrated the said mold main body. The die cutting according to claim 1,
The said rib is a disk stuck on the predetermined position of the said surface which does not contact. The die cutting characterized by the above-mentioned. The die cutting according to claim 1,
The die body is formed of a thermosetting resin. In the die-cutting according to claim 2 or 3,
The die is characterized in that the rib is made of wood. The die cutting according to claim 1,
The die main body is provided with a fixing part for fixing the die main body with an adjustment margin to a mold for forming the outer shape of the concrete block. It is a jig used for the die-cutting according to claim 1,
The tip has a shape with a plurality of legs that extend to a predetermined position on the non-contacting surface and the leading ends meet at one point,
By applying an impact to the starting end from the outside, the impact is transmitted from each tip to the mold body via a rib. The jig according to claim 8, wherein
The die for jigs is a wood.

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