JPS5830660Y2 - Reinforced plastic tube socket mold - Google Patents

Description

[Detailed description of the invention] The present invention is a reinforced plastic pipe holder that facilitates mounting on a core mold and removing the manufactured reinforced plastic pipe from the socket in the process of manufacturing a reinforced plastic pipe with a socket. This relates to a mouth mold.

Conventionally, when manufacturing a reinforced plastic pipe with a socket, for example, as in Japanese Patent Publication No. 51-16071, an annular inner mold is divided into three or more parts in the circumferential direction, and a few of the three or more mold pieces are One mold piece has a dividing surface so that it can be moved directly into the central space of this annular inner mold with respect to the mold pieces adjacent on both sides, and the annular inner mold is axially moved to a local part of the rotating core metal. An internal mold device for forming a tube socket may be used, which is mounted so as to be relatively movable.

However, the conventional method described above has the disadvantage that it is not easy to attach and fix it to the rotating core metal, and even if attempts are made to improve this point, the current situation is that no good method has been found to successfully remove the mold at the same time. Ta.

The present invention was made with the aim of solving the above-mentioned conventional drawbacks, and its gist is that the annular body is split in the axial direction so that it can be divided into a plurality of split types, An expandable member is provided on the inner circumferential surface of the split mold in a direction substantially perpendicular to the axial direction of the tubular body, and at least one of the split molds is movable inward relative to each other. Socket molding of a reinforced plastic pipe that can be freely fitted between a locking tool provided at one end of at least one split mold and a receiver provided at one end of another split mold. It exists in the type.

Hereinafter, the present invention will be explained with reference to embodiments of the drawings.

1 is a toroidal body.

As shown in FIGS. 1 to 3, the annular body 1 has a crack in its axial direction and is divided into four divided molds 11, 12, 13, 14.
The opposing split molds 11 and 13 can be moved inward relative to the other opposing split molds 12 and 14, so that they can be dropped when demolding.

The divided molds 11 and 13, 12 and 14 are each of the same type.

This will be explained in detail mainly for split types 11 and 12.
The split molds 11 and 12 have side walls 112 and 1 on both sides of a curved substrate 111 and 121, respectively, to form an annular body 1.
13.122.123 are provided.

The split mold 11 is provided with locking tools 114, 114 protruding outward from the end on the inner circumferential surface of the substrate 111 at one end thereof, and locking tools 114, 114 protruding outward from the end at the inner circumferential surface of the substrate 111 at the other end. Projecting piece 11
5 is provided.

The split mold 12 is provided with a receiver 124 on the inner circumferential surface of the base plate 121 at the lower end thereof, to which the locking tool 114 of the split mold 11 can be locked, and a receiver 124 on the inside of the base plate 121 at the other end to which the locking tool 114 of the split mold 11 can be locked. The protruding pieces 135 are connected by bolts 2, and female threads 125 are formed therein.

Expandable members 116 are provided on the inner peripheral surfaces of the substrates 111 and 121 of the split molds 11 and 12 in a direction substantially perpendicular to the axial direction of the annular body 1, respectively.
, 126 are provided, and the tips of the elastic members 116, 126 are
The side walls 112 and 113 are arranged to protrude from the side walls 112 and 122, respectively.

As shown in FIG. 6, the elastic material 116 used includes a rod 1163 inserted into a short cylindrical portion 1161 via a spring body 1162.

When assembling the annular body 1 using the split molds 11 and 12 and 13 and 14, first attach the protruding pieces 115 to the internal threads 145 and 125 by bolts 2 and 2 to the split molds 11 and 14 and 12 and 13, respectively.
゜135 are connected to form two sets of split molds, and then the two sets of split molds are connected to the locking tools 1 provided at both ends.
14, 134 and the receivers 124, 144 are fitted on the core mold 3 to be mounted, and assembled into the annular body 1 to form a socket mold.

In addition, this assembly is such that the locking tool provided at one end of at least one split mold can finally be fitted freely with the receiving tool provided at one end of the other split mold. This can be done as appropriate.

In this case, the extensible members 116, 126, 136, and 146 have their tips abutted against the core mold 3, and their elastic force acts to push and spread the split molds 11, 12, 13, and 14 outward, thereby locking them. The fit between the tool 114° 134 and the receivers 124, 144 is made strong, the outer diameter of the assembled annular body 1 is set to a predetermined outer diameter, and the annular member 1 is fixed to a predetermined position on the core mold 3. It plays the role of fixing it in position.

In addition, when removing the socket mold from the socket part of the reinforced plastic pipe formed on the socket mold installed on the core mold 3, first remove the core mold 3 from the socket mold. In this state, remove the bolts 2, 2, and remove the locking tools 114, 134 and the receiver 12.
4, 144 are unfitted, and the split mold 11.13 is dropped inward to peel off the mold, and then the split mold 12.
14 is peeled inward and demolded.

Next, the manner of use of the embodiment of the present invention described above will be explained with reference to FIGS. 4 and 5.

When mounting the socket mold on the core mold 3, which rotates in the circumferential direction and moves in the axial direction, first, the split molds 11 and 14 and 12 and 13 are connected with bolts 2 and 2, respectively, and two sets of molds are formed. A split mold is formed, and these two sets of split molds are temporarily attached to the arms 41, 41' of the socket mold mounting device 4, as shown in FIG. Move the locking tool 1
14, 134 and the receivers 124 and 144 are fitted on the core mold 3 to assemble the annular body 1, and the socket molding die is mounted on the core mold 3.

In this case, the annular body 1 is expanded by the elastic force of the elastic members 116, 126, 136, and 146, and the socket mold is firmly attached to a predetermined position so as to have a predetermined outer diameter dimension. .

A molding material 5' such as glass roving impregnated with thermosetting resin liquid on the core mold 3 and the socket mold mounted thereon.
The molding material layer 5 is shaped by winding the molding material layer 5, and after being hardened through a curing furnace 6, the core mold 3 is removed and the molding material layer 5 is cut at a predetermined position on the outer periphery of the socket molding die. Cut at 7.

After that, the bolts 2, 2 are removed, the split molds 11, 13 are dropped inward to perform peeling, and then the split mold 1 is removed.
2 and 14 are peeled inward to produce a reinforced plastic pipe with a socket.

As mentioned above, in the socket mold of the reinforced plastic tube of the present invention, the annular body can be divided into a plurality of divided molds, and the elastic material is placed on the inner circumferential surface of the divided molds in a direction substantially perpendicular to the axial direction of the tubular body. is provided, and when the split molds are assembled, the locking tool provided at one end of at least one split mold can finally be freely fitted with the receiving tool provided at one end of the other split mold. Therefore, it can be installed onto the core mold instantly and reliably, and even if the core mold is rotating in the circumferential direction and moving in the axial direction, the socket can be inserted without stopping the core mold. A mold can be attached,
At this time, the tip of the elastic material comes into contact with the core mold, and its elastic force acts to push and spread the split molds outward, making the fitting between the locking tool and the receiver strong, and the assembled receiver The outer diameter of the mouth mold is set to a predetermined outer diameter, the socket mold can be securely placed at a predetermined position on the core mold, and at least one of the split molds can be relatively moved inward. Therefore, it is possible to easily remove the socket mold from the inside of the socket of the molded reinforced plastic pipe.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the present invention, Fig. 2 is a front view of Fig. 1, Fig. 3 is a longitudinal sectional view taken along line 11 in Fig. 1, and Fig. 4 is an assembled state of the present invention. FIG. 5 is a plan view illustrating how the present invention is used, and FIG. 6 is a partial vertical cross-sectional view showing an example of an elastic material used in the present invention. Explanation of the symbols: 1... Annular body, 3... Core type, 11゜12.13, 14... Divided type, 114...
...Locking tool, 116...Elastic material, 124...
...Receptacle.

Claims (1)

[Scope of utility model registration request] The annular body has a crack in the axial direction so that it can be divided into a plurality of split molds, and an elastic material is provided on the inner peripheral surface of the split mold in a direction substantially perpendicular to the axial direction of the annular body, and the split mold At least one of the split molds is movable inwardly, and when the split molds are assembled, a locking device is finally provided at one end of at least one split mold and a locking device provided at one end of the other split mold. A socket mold for a reinforced plastic pipe that can be freely fitted with a receptacle.