JPH0755045Y2 - Mold receiving structure for forming paving block materials - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION The present invention is generally used as a mold for molding pavement block materials.

[0002]

2. Description of the Related Art Currently, various types of designed pavement block materials are generally used. The molding die is divided into a frame die 1 and ribs 2 as shown in FIG. An aggregate is filled between a metal mold 4 called a core in the industry which is fitted and set in the designed cavity 3 and compression-molded by high vibration. The die is fixed with sand or gravel filling the cavity to make it durable against wear and abrasion, and is made of metal or iron material. The metal bar 5 is fitted into the groove formed horizontally on the upper surface of the die and welded to both ends of the die. And the end of the extended bar was fixed to the rib 2 or the frame mold 1. However, as described above, since the molding means is compression molding due to high vibration of the mold, there are peeling and dropping due to cracks in the welding 6 part of the bar and the receiving mold during the molding process, and there is a breakage accident such that the bar itself is broken. Not only the durability of the mold but also the workability is impaired.

[0003]

SUMMARY OF THE INVENTION In view of the above problems, the present invention is to solve the problem of bar breakage and peeling and dropping of welded parts. It was necessary to propose a new mold-receiving structure that does not improve or otherwise deteriorate the molding function.

[0004]

[Means for Solving the Problems] A means for achieving the above object
As a step, one of the receiving molds with the fixing bar groove laterally provided on the upper surface
Part is hard synthetic resin material, or the whole of the die is hard
When composed of synthetic resin material or reinforced plastic material
In both cases, the pressing plate of the through bar and the fixing hole of the pressing plate are provided on the upper surface of the mold.
The receiving structure provided with is used as a means .

[0005]

[Embodiment 1] FIGS. 1 to 3 show a part of a receiving mold made of a hard synthetic resin.
1 shows a working structure made of a material , 10 is a metal receiving mold called a core, and 11 is a bar 1 which is laterally provided on the upper surface of the receiving mold.
The fitting groove 12 of 8 is a cushioning material formed of a hard synthetic resin material such as nylon attached to the receiving mold. As shown in FIG. 3, the fitting groove 11 of the bar is formed in the recess 13 provided in the receiving mold. The recessed buffer synthetic resin material 14 provided may be fitted. Reference numeral 15 is a bolt screw hole, and 16 is a metal pressing plate fixed to the upper surface of the die. Reference numeral 17 is a bolt cap hole, and 19 is a receiving die weight release hole. The bar 18 is a through bar that fits into and is attached to the bar groove 11. In the receiving mold, the upper part of the through bar fitted in the bar groove is fixed by a pressing plate 16 with bolts, and both ends of the extending part are fixed to ribs or frames of the frame mold.

[0006]

[Embodiment 2] Reference numeral 20 in FIGS. 4 and 5 shows the structure of another embodiment, in which the entire receiving die is molded from a hard synthetic resin material. As the molding material, engineering plastics such as nylon 6 and nylon 66 having high abrasion resistance and mechanical strength, or thermosetting epoxy resin, polyester resin, thermoplastic polyamide, polyacetal resin or the like can be considered. In addition, metal powder, metal fibers,
It may be molded with a reinforced plastic containing a reinforcing material such as glass fiber, or may be a mold having friction characteristics in which molybdenum disulfide or acetylene black is mixed in order to reduce the friction coefficient.

[0007]

[Embodiment 3] A steel mold, an aluminum powder, and an epoxy resin and a polyester resin are mixed at a ratio of 80:20. The synthetic resin receiving molds 20 of Embodiments 2 and 3 shown in FIGS. 4 and 5 have a structure in which the fitting groove 11 of the through bar 18 is provided, and the through bar 18 is fixed to the holding groove 16 and the fixing tool. No buffer material is required.

[0008]

[Effect] As described above, the present invention is a novel mold which is constructed by forming a part or the whole of a mold for molding a paving block material with a synthetic resin material, and a pressing plate for fixing the through bar and a fixing tool. It is a structure. Conventionally, it has been considered that a molding tool such as a block made of a solid material such as sand or gravel is a mold as a general-purpose technical means in the industry from the viewpoint of wear resistance and strength, but there are many drawbacks due to the vibration molding described above. In view of the above, it is an object of the present invention to provide a new and improved receiving mold that goes beyond the conventional mold concept.

As a feature of the present invention, first, the bar for fixing the receiving mold to the set is a through bar without welding, so that the load of the receiving mold on the bar is dispersed and cracks and breakage accidents due to conventional welding fixing are eliminated, and work is performed. It has the advantage of greatly improving sexuality. Further, if the receiving die main body is entirely made of synthetic resin material, the specific gravity is about one-third the weight of the conventional iron die, and the load strength and durability of the bar by vibration forming are remarkably deteriorated. Furthermore, the effect of releasing the mold after molding was good, and the finishing accuracy of the molded product was also improved.

[Brief description of drawings]

FIG. 1 is a receiving flat portion in which a negative portion is made of a synthetic resin material and a negative portion of a holding plate is omitted.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG.

FIG. 4 is a plan view of the holding plate with a negative part omitted, which is made of synthetic resin as a whole.

5 is a sectional view taken along line CC of FIG.

FIG. 6 is an overall plan view of a conventional molding die including a frame die 1 and a receiving die 4 with a portion omitted.

[Explanation of symbols]

 10 Receiving type 11 Bar groove 12 Relaxation material 13 Recessed portion 15 Bolt screw hole 16 Holding plate 18 Through bar 20 Synthetic resin receiving type

Claims (2)

[Scope of utility model registration request] 1. A receiver fitted and fixed in a cavity of a frame die.
In the die, a die with a fixing bar groove laterally provided on the upper surface
If some or all of these are made of hard synthetic resin material
In both cases, the holding plate of the through-bar and the holding plate
Molding of paving block material characterized by having fixed holes
Receiving type structure . 2. A reinforced plastic for all of the receiving die according to claim 1.
Pavement block material characterized by being composed of sticks
Molding structure for molding .