JPS5939292B2 - Method for molding reinforced resin tubular body with socket and mold thereof - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for molding a reinforced resin tubular body with a socket and a mold thereof.

When molding a reinforced resin tubular body with a socket, for example,
As in Publication No. 8-100863, a stepped cylinder consisting of two large diameter cylindrical parts and a small diameter cylindrical part with the same outer diameter of the large part cylindrical part is formed from one small diameter cylindrical part. Concentrically between the end face and the other large diameter cylindrical part end face,
and a mold for forming a joint part is formed by joining them in a divisible manner, and a plurality of the molds for forming a joint part are integrally joined in a divisible manner directly or through an intervening mold at the end face of the small diameter cylindrical part. Molding is carried out using a mold, and JP-A-52-1
As in Japanese Patent No. 23464, molding may be performed using a core metal assembled by detachably connecting at least two mold members.

However, since there is no way to mold pipe joints of multiple shapes or sizes with a single core mold as described above, it is difficult to mold reinforced resin tubular bodies with sockets of each shape or size. The drawback was that each core mold had to be prepared, which required a huge amount of cost.

5 The present invention has been made with the aim of solving the conventional drawbacks as described above, and includes a mold main body and a socket molding part, and a socket that is slidable in the axial direction on the outer periphery of the mold main body. fixing the socket molding part of a mold for a reinforced tubular body with a socket in which the mouth molding part is attached to a predetermined position of the mold body, forming a reinforced resin molding material layer around the mold body and the socket molding part, 2. A method for molding a reinforced resin tubular body with a socket, which comprises curing the resin, releasing the fixation of the socket molding part, removing the mold body, and then removing the socket molding part; and 2. A socket comprising a mold body and a socket molding part, the socket molding part is attached to the outer periphery of the mold body so as to be slidable in the axial direction, and the socket molding part can be fixed at a predetermined position on the mold body. Includes a reinforced resin tubular body mold.

Hereinafter, the present invention will be explained by way of examples with reference to the drawings.

FIG. 4 is a sectional view showing a socket-type pipe joint molding die according to an embodiment of the present invention, and FIG. 5 is a partially cutaway perspective view showing a part of the embodiment shown in FIG. 4 on an enlarged scale.

Reference numeral 1 denotes a mold body, and a pair of annular members 11 and 11' having an outer diameter that is approximately the same as the inner diameter of the central part of the reinforced resin tubular body with a socket to be molded is provided with a mold body that protrudes inwardly and outwardly, respectively. Annular flange parts 111 and 11V are provided, and an uneven part is provided on the end face of the other end, and an uneven part is provided on the end face of both ends, respectively, having the same outer diameter as the annular members 11 and 11'. One end of the provided short annular members 112, 112' is connected, and the other ends of the short annular members 112, 112/ can abut each other.

Through holes 111a..., 111a/... are provided in the outwardly projecting portions of the flanges 111, 111', and female threads are provided in the through holes 111a..., 111a'... Long bolt 4 with that as a hole..., 47.
... is inserted, and the flange portion 111,
111'. Reference numerals 2 and 27 designate socket molding parts, in which flanges 211 and 2117 are provided at one end of the cylindrical members 21 and 21', respectively, and the external shape of the cylindrical members is shaped to accommodate a reinforced resin tubular body with a socket to be molded. The shape matches the inner surface shape of the mouth part, and the inner diameter of the cylindrical members 21, 21' and the flange parts 211, 211' is approximately the same as the outer diameter of the annular members 11, 11' at the smallest part. .

The flanges 211, 211' have through holes 11 in the mold body 1.
1a..., 111a'..., into which the long bolts 4..., 4'... are screwed together.
..., 211a'... and through hole 211b...211
b'... are provided, and the through holes 211b..., 211
A female thread is screwed into b'..., and short bolts 5..., 5/... are inserted through this hole, and the flange portion is secured by the bolts 5..., 5'... 211,2
Annular plates 6, 6' can be fixed to the inner surface of 11'. Reference numeral 3 denotes the shaft center, and male threaded portions are provided on the outer circumferential surfaces of both ends.

Reference numerals 7 and 7' designate connection members having a flange portion provided outwardly at one end of the short tube.

On the annular members 11, 11' of the mold body 1, annular bodies 6, 6' are placed.
The socket molding parts 2, 2/ to which are fixed are attached so as to be slidable in the axial direction, and the ends of the short annular members 112, 112' are brought into contact with each other, and the mold body 1 is connected to the shaft via the connecting members 7, 77. Fix it to core 3.

After that, the long bolts 4..., 4', .
..., and tighten the long bolts 4..., 4'... from both sides with nuts at appropriate lengths.
By fixing 117VC, the socket molding parts 2, 2' are fixed at predetermined positions in the mold body 1, and a socket type joint molding mold is formed. 1 to 3 are cross-sectional views illustrating a method of forming a socket-type pipe joint according to an embodiment of the present invention using the socket-type pipe joint forming mold shown in FIGS. 4 and 5. FIG. Fourth
A reinforced resin molding material in which reinforcing material such as glass ropeing is impregnated with unsaturated polyester resin is wound around the mold body 1 and the socket molding parts 2 and 2' of the socket-type pipe joint mold shown in Figures 1 and 5. A reinforced resin molding material layer 10 is formed and cured (see FIG. 1). After that, remove the nut screwed onto the shaft core 3 and remove the shaft core 3, and also remove the long bolts 4... by unscrewing the nuts, and remove the through holes 111a.
A long bolt 8 that is screwed into the female thread screwed into...
screw in, and attach the tip to the flange part 21 of the socket molding part 2.
1, the mold body 1 is further screwed in and removed from the inner surface of the reinforced resin molding material layer 10 (see FIG. 2).

After that, remove the short bolts 5... and open the through holes 111b.
A long bolt 9 that is screwed into a female thread screwed into...
・ After screwing the tip into contact with the annular plate 6, screw it in again and remove the socket molded part 2 from the inner surface of the socket part of the reinforced resin molding material layer 10 (see Fig. 3), and remove the socket. Mold pipe fittings.

Yes, the elbow type pipe fitting mold or cheese type pipe joint mold 2,2/or 2,2' shown in FIG. 6 or FIG.
, 2/' can be mounted and fixed to form elbow-type pipe joints or cheese-type pipe joints of various shapes or sizes. As in the above embodiment, the smallest part of the inner diameter of the cylindrical members 21, 21' of the socket molding parts 2, 2' and the flange parts 211, 21V is approximately the same as the outer diameter of the annular member 11, 1V of the mold body 1. This is preferable because the socket molding parts 2, 2' can be easily slid in the axial direction on the outside of the mold body 1 and can be placed in a predetermined position.

Further, it is preferable that the mold body 1 is removed by pushing the mold body 1 from the socket molding part 2 because the mold body 1 can be easily removed.

As mentioned above, the method for molding a reinforced resin tubular body with a socket according to the present invention is a method for molding a reinforced resin tubular body with a socket, in which a socket molding part is attached to the outside of the mold body so as to be slidable in the axial direction. The mouth molding part is fixed at a predetermined position on the mold body, and a reinforced resin molding material layer is formed around the mold body and the socket molding part.
A single mold can be used to mold tubular bodies such as pipe fittings or pipes of multiple shapes or sizes, and after the reinforced resin molding material layer formed around the mold body and socket molding part is cured. , since the fixation of the socket molding mold is released, the mold body is removed, and then the socket molding part is removed.
A reinforcing tubular body with a socket can be molded by easily removing the mold body and the socket molding part from the molded body in an orderly manner.

The mold for forming a reinforced resin tubular body with a socket according to the present invention has a second main body and a socket molding part, and the socket molding part is attached to the outside of the mold body so as to be slidable in the axial direction. Since the molding part can be fixed at a predetermined position on the mold body, the socket molding part can be fixed at a predetermined position on the mold main body. It can be used as a mold for molding a body.

[Brief explanation of the drawing]

1 to 3 are cross-sectional views illustrating a method for forming a socket-type pipe fitting according to an embodiment of the present invention, and FIG. 4 is a cross-sectional view showing a mold for forming a socket-type pipe joint according to an embodiment of the present invention. FIG. 5 is a partially cutaway perspective view enlarging a part of the one shown in FIG. 1, FIG. 6 is a sectional view showing an elbow type pipe joint molding die according to another embodiment of the present invention, and FIG. FIG. 2 is a sectional view showing a cheese-type pipe joint molding die according to another embodiment of the present invention. Brief explanation of symbols 1...Mold body, 2, 2'.
... Socket molding part, 10 ... Reinforced resin molding material layer.

Claims (1)

[Scope of Claims] 1. A receiver for a reinforced resin tubular body mold with a socket, which comprises a mold body and a socket molding part, and the socket molding part is attached to the outer periphery of the mold body so as to be slidable in the axial direction. The mouth molding part is fixed at a predetermined position on the mold body, a reinforced resin molding material layer is formed around the mold body and the socket molding part, and after this is cured, the socket molding part is released and the mold is removed. A method for molding a reinforced resin tubular body with a socket, the method comprising removing the main body and then removing the socket molding part. 2. The method for molding a reinforced resin tubular body with a socket according to claim 1, wherein the socket molding part has an inner diameter that is approximately the same as the outer diameter of the mold body. 3. The method for molding a reinforced resin tubular body with a socket according to claim 1 or 2, wherein the mold body is removed by pushing the mold body from the socket molding section. 4. A method for molding a reinforced resin tubular body with a socket according to claim 1, 2 or 3, wherein the tubular body is a pipe joint. 5 A receiver comprising a mold body and a socket molding part, the socket molding part is attached to the outer periphery of the mold body so as to be slidable in the axial direction, and the socket molding part can be fixed at a predetermined position on the mold body. Reinforced resin tubular body mold with mouth. 6. A mold for forming a reinforced resin tubular body with a socket according to claim 5, wherein the socket molding part has a portion having an inner diameter that is approximately the same as the outer diameter of the mold body. 7. A mold for a reinforced resin tubular body with a socket according to claim 5 or 6, wherein the tubular body is a pipe joint.