JPH03277893A - Collective piping fixing method by multi-step arrangement - Google Patents

Abstract

PURPOSE:To facilitate fixation of piping units by arranging them in a mold, injecting fused thermosetting resin for casting embedment of the piping units while forming a base with a primary molding provided with set grooves, further arranging the pipelines and injecting the fused thermosetting resin while forming a cover with a secondary molding for casting embedment. CONSTITUTION:A plurality of piping units P are arranged respectively in assembling ports 2 of a mold, while the mold is set in a hollow part. Fused thermosetting resin is injected and charged in the hollow part. The units P are castingly embedded therein, and grooves 3 are formed. A base 1 provided with set grooves 4 is formed accompanied by a primary molding. Further, the pipelines P are arranged in the set grooves 4. Fused thermosetting resin is injected and charged in the remained hollow part in the molding and the grooves 3 on the side walls of the base 1. A cover 5 is formed by a secondary molding, castingly embedded and fixed. The fixation is thus performed with ease and certainly. It is possible to prevent crush, deformation of the pipe on its connection part, and thereby prevent it from escaping.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention generally relates to metal pipes or resin pipes having a relatively small diameter of about 15 m/m or less as fuel pipes, vacuum pipes, hydraulic pipes, etc. for automobiles, etc. The present invention relates to a method for fixing a collection of pipes using a multistage arrangement related to the arrangement of tubes (hereinafter simply referred to as pipes).

(Prior art) Conventionally, this type of method for fixing collective pipes in a multi-tiered arrangement has been performed using a separate resin body that has been bent in advance and is generally molded with clamping claw walls for a plurality of pipes on its surface. By using a clamp body made of a resin material or a separate clamp body made of a resin material molded in a mating shape consisting of a pair, the straight pipe portion on each piping side is press-fitted to each claw wall portion of the clamp body. Either they can be fixed in parallel, or they can be inserted into a pair of semicircular grooves provided between opposing faces of mating shapes, and they can be attached in parallel and arranged in parallel using hooking means using claw walls. was.

(Problem to be Solved by the Invention) However, in such a conventional fixing method, since the clamp body is separately molded in advance, it is difficult to assemble piping to each clamping claw wall or groove. Not only does this cause extremely troublesome work and a significant drop in work efficiency, but it can also lead to problems with the claw walls forming the clamping wall or the mutual hooking means, or aging fatigue of these claw walls over a long period of time. Fixation is generally unstable, with parts of the piping often coming off due to vibration, etc.
In addition, piping made of resin tubes has the problem of being crushed and deformed due to variations in the degree of clamping at fixed portions, which obstructs flow. Furthermore, since the clamps are simply arranged and fixed in a parallel direction, restrictions are forced especially on collective piping due to multi-stage arrangement, and at the same time, the clamp body itself is long, which often causes problems in narrow spaces. I decided to invite him.

The present invention has been made in view of the above-mentioned problems of the prior art, and even if the collective piping is arranged in multiple stages, the assembly eliminates the troublesome work and significantly improves productivity. It eliminates the worry of the pipes coming off and securely fixes them, eliminates soaking and deformation at the fixed part even when piping is made of resin tubes, further expands the arrangement restrictions for pipes that are assembled together, and makes it possible to securely fix the clamp body. It is an object of the present invention to propose a method for fixing collective piping that is compact and can be used even in a narrow space and is compatible with multi-tiered arrangements.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention has a plurality of relatively small-diameter pipes that pass through both side wall surfaces in one mold consisting of a pair of split molds and are hollow inside. The assembly leading to the part is arranged in the hole part in a substantially parallel manner while maintaining a distance from each other, and the pipe is inserted and set in the hollow part, and then from the spout part of the mold. A molten thermoplastic resin material is injected and filled into the hollow part, and then cooled to solidify, thereby casting and embedding the pipe, extending over the outer surface perpendicular to the side wall surface and the outer bottom surface thereof. A concave groove is formed therein, and a base body side is formed in the primary molding as a clamp body having at least one substantially semicircular set groove extending in the width direction on the upper surface, and each of the set grooves is then formed. With pipes of similar small diameter placed and arranged in the set groove, the other metal plate is positioned opposite to the set groove and has substantially semicircular engagement grooves on both side walls thereof communicating with the internal hollow part. Forming a lid side that encloses the groove portion on the upper surface of the base body by injecting and filling a molten resin material into the hollow portion inside the mold and the groove portion of the side wall of the base body, and performing secondary molding as the filling occurs; The gist of this invention is to provide a method for fixing a collection pipe in a multi-stage arrangement, in which the pipes are then cast and buried all at once and fixed by performing a cooling process.

(Function) Since the present invention uses such a fixing method, following the molding of the side wall of the base body as a clamp body through primary forming in which a plurality of pipes are cast and buried in parallel, the plurality of pipes arranged on the upper surface of the base body side wall is formed as a clamp body. By forming a lid body that encloses the base side, and then casting and embedding it in the same way and fixing it in multiple stages, assembling the pipes becomes cumbersome even if the pipes are arranged in multiple stages. This eliminates the problem of simple and reliable fixing, which significantly improves productivity and eliminates the worry of detachment at the fixed part. By using a resin material with a melting point lower than that of the resin tube for the body side, it is possible to eliminate soaking and deformation at the fixed part, and furthermore, by fixing in a multi-stage arrangement, it is possible to limit the arrangement of piping due to collective assembly. In addition, the clamp body can be made compact so that it can be used even in a narrow space.

(Example) Hereinafter, embodiments of the present invention will be described based on the drawings. FIG. 1 is a plan view of a collective arrangement constructed by the method of fixing collective pipes by multistage arrangement of the present invention, and FIG. 1 is a side view, FIG. 3 is a perspective view of the base body forming the molded clamp body of FIG. 1, FIG. 4 is a perspective view of the molded lid body side of FIG. 1, and FIGS. 5 and 6. The figure is an explanatory diagram showing the steps of the method of the present invention, and (P) is a pre-bent pipe with a diameter of 6 m/m.
The piping consists of three metal pipes (lower stage) and three nylon-11 resin tubes (upper stage) that are approximately parallel to the lower stage and have a thickness of 6 m/m. P) is installed in one of the molds consisting of a pair of split molds, and the holes (2) are installed in a manner that they are approximately parallel to each other with a distance maintained between them. The straight pipe part of the pipe (P) is positioned and set in the hollow part by inserting the pipe in a non-arranged state, and then a molten material made of thermoplastic resin made of polyethylene is injected into the hollow part from the spout at pressure. It is made by injecting and filling 250 kg/-.Then, by performing cooling treatment by circulating cooling water inside the mold and solidifying it, the straight pipe part is perpendicular to the side wall surface where the straight pipe part is cast and buried. A U-shaped concave groove (3) is formed across the outer side surface and the outer bottom surface, and a plurality of approximately semicircular set grooves (4) extending in the width direction are arranged in parallel at intervals on the upper surface. The base body (1) side is formed by primary molding as a clamp body (FIG. 5).

Furthermore, with the resin tubes (P) placed and arranged in substantially the same direction in each of the set grooves (4), the resin tubes (P) are positioned opposite to each of the set grooves (4) on both side wall surfaces thereof. Using the other mold, which is provided with a substantially semicircular engagement groove that communicates with the internal hollow part, the same melted polyethylene resin as described above is injected into the hollow part and into the internal hollow part of the mold at an injection pressure of 150) tg/-. The groove (3) on the side wall of the base body (1) is shaped like a letter.
) A lid body (5) that encloses the concave groove (3) from the upper surface and upper surface of the base by injection into the part and secondary molding accompanying filling.
By forming the sides and then performing a cooling treatment, a multi-tier arrangement of pipes was obtained by casting and embedding them all at once and fixing them (FIG. 6).

In addition, in the above embodiment, one base body side was shown, but when a plurality of base bodies (1) having pipes (P) cast and embedded thereon are stacked up and a lid body (5) is formed, they are stacked together. It can also be fixed. Further, the pipes (P) only need to be arranged substantially in parallel, and they do not necessarily have to be parallel, but can be fixed at a certain angle, and there may be a large angle between the stages.

Furthermore, although it is not worth considering if the piping (P) is a metal pipe, if it is a resin tube, the following combinations are related to the melting point of the base (1) or lid (5) that forms the clamp body: For example, nylon-6, -6 on the resin tube side
, 6, -11 and -12, these nylon-based, vinyl chloride, polypropylene, AB
A thermoplastic resin material having a melting point lower than that of the resin tube, such as S or polyacetal, is appropriately selected and used as desired.

(Effects of the Invention) As explained above, the method for fixing collective pipes by multi-stage arrangement according to the present invention is particularly advantageous in that, following the formation of the base body (1) as a clamp body in the above-mentioned subsequent molding, Since a plurality of pipes (P) are arranged in multiple stages and are cast and buried all at once by secondary forming by forming a lid body (5) that covers the base side, even if the pipes are assembled in a multi-stage arrangement, the pipes ( The assembly of P) can be done easily without any troublesome work, and can be fixed securely, resulting in a marked improvement in productivity.At the same time, the worry of detachment at the fixed part is eliminated,
In addition, even when arranging resin tubes, it is possible to eliminate crushing and deformation at the fixed part due to the difference in melting point with the clamp body, and furthermore, by fixing in a multi-stage arrangement, the arrangement of pipes that are concentrated in one place is limited. This is an extremely useful method for fixing a collection pipe using a multi-stage arrangement, which allows the clamp body to be made compact and convenient for use in a narrow space.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a collective arrangement constructed by a method for fixing collective pipes using multistage arrangement according to an embodiment of the present invention, FIG. 2 is a side view of FIG. 1, and FIG. 3 is a molding of FIG. 1. FIG. 4 is a perspective view of the molded lid body side of FIG. 1, and FIGS. 5 and 6 are explanatory diagrams showing the steps of the method of the present invention. (1)... Base, (2)... Hole for assembly, (3)...
・Concave groove, (4)...set cover, (5)...lid body, (
P)...Piping.

Claims (1)

[Claims] A plurality of relatively small-diameter pipes are installed in one mold consisting of a pair of split molds in an assembly hole that penetrates both side walls and communicates with the internal hollow part, and are arranged approximately parallel to each other with a distance between them. At the same time, the piping is positioned and set in the hollow part, and then the molten thermoplastic resin is injected and filled into the hollow part from the spout of the mold, and then it is cooled and solidified. By doing so, the piping is cast and buried,
A primary clamp body having a concave groove formed across an outer surface perpendicular to the side wall surface and an outer bottom surface thereof, and at least one set groove formed in a substantially semicircular shape extending in the width direction on the upper surface. The base side is formed by molding, and then piping having the same small diameter is placed and arranged in each of the set grooves, and the inner hollow part is placed on both side walls of the set groove, facing the set groove. The other mold, which is provided with a substantially semicircular engagement groove that communicates with the mold, injects the molten resin into the hollow part inside the mold and into the concave groove part of the side wall of the base body, and the secondary molding that accompanies the filling causes the base body to be formed. 1. A method for fixing collective piping in a multi-stage arrangement, characterized in that a lid body side that encloses a concave groove portion is formed on the upper surface, and then a cooling treatment is performed to cast and embed it all at once and fix it.