JPH079598A - Continuous molding apparatus for tubular member - Google Patents

Abstract

PURPOSE:To continuously mold a tubular member having in arbitrary cross-sectional shape by impregnating the braids formed around a mandrel with a resin and molding the impregnated braids into a predetermined cross-sectional shape and curing the same to form a tubular member. CONSTITUTION:A resin impregnation device P having a resin soln. tank P1 for impregnating the braids (b) formed around a mandrel (m) with a liquid thermosetting resin is provided. Lip members P2, P2' formed from an elastomer such as rubber are attached to the window parts provided to the side walls of the resin soln. tank P1 in order to prevent the leakage of the liquid resin in the resin soln. tank P1 from the periphery of the braids (b) formed on the mandrel (m) inserted in the resin soln. tank P1. A molding and curing device H consisting of a die member h1 for molding the resin impregnated braids on the mandrel (m) into a predetermined cross-sectional shape and a molding chamber h2 for heating and curing the braids (b) molded into the predetermined cross-sectional shape on the mandrel (m) by the die member h1 is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tubular body continuous molding system for continuously molding tubular bodies having various sectional shapes from a braid composed of a braider.

[0002]

2. Description of the Related Art Conventionally, various braiders that compose a tubular braid have been known, and the braid composed by such a braider is once removed from the braider and then impregnated and cured with a resin. It is also known to produce rigid tubular bodies.

[0003]

In the conventional system in which a tubular braid is impregnated with a resin and cured to form a tubular body, the braider and the resin impregnation process are not connected as a continuous continuous molding system. Since the braid composed is once removed from the braider and sent to the next resin impregnation process, etc., productivity is poor, and since it is not a continuous continuous molding system, uniform quality is obtained. It was difficult to mold the tubular body. Further, the braid removed from the braider, because it is difficult to maintain the shape without a core member such as a mandrel, a step such as inserting the core member into the braid in the resin impregnation step is required, Productivity will be further deteriorated. Further, there is no known tubular continuous molding system for continuously molding a braid composed of a tubular shape into various sectional shapes.

The object of the present invention is to solve the problems of the conventional system for forming a tubular body by impregnating a braid with a resin, and to continuously produce tubular bodies having various cross-sectional shapes of uniform quality with excellent productivity. The object of the present invention is to provide a continuous molding system for tubular bodies.

[0005]

In order to achieve the above-mentioned object, the present invention comprises forming a braid around a mandrel supported in a cantilevered manner, and impregnating the braid on the mandrel with a resin. The tubular body is formed by molding and hardening into a predetermined cross-sectional shape. Examples of the present invention will be described below, but the present invention is not limited to these examples as long as the gist of the present invention is not exceeded.

[0006]

1 is a front view of a braider.
And the braider used for the tubular body continuous molding system of the present invention will be described with reference to FIG. 2 and its side view. 1 and 2, bobbin carrier C
The rectangular portion shown by the dotted line in the upper part of FIG. 3 is shown by omitting the yarn guide portion c3 described later.

The braider B is formed in a curved upper plate U having a predetermined radius of curvature R, which is arranged in a substantially cylindrical machine base Fb having a horizontal axis and an opening e on one side, and is drilled in the upper plate U. A bobbin carrier C traveling along the track, a driving device D for traveling the bobbin carrier C along the track,
The composition position stabilizing guide member G, the mandrel supporting device M, the bobbin supporting device I for the middle thread or the reinforcing thread, and the like are included.

Each of the above devices and members will be described below. First, mainly using FIG. 3 which is an enlarged front view of the drive unit D for causing the bobbin carrier C including the I-I cross section of FIGS. 2 and 2 to travel along the track, the upper plate U of the braider B is used. A drive device D for causing the bobbin carrier C to travel along the track will be described.

As shown in FIG. 2, the curved upper plate U is a suitable fixing member disposed at a predetermined interval on a machine frame f1 arranged in a machine stand Fb having a substantially cylindrical shape. f2, f
2'and the upper plate U is provided with a known track in the circumferential direction. f3 is a hollow bolt attached to the machine frame f1 by a nut f4, and the hollow bolt f3 is fitted with a gear d1 via an appropriate bearing f5.
An impeller d2 having a groove on the upper surface thereof to which an engagement shaft c1 of a bobbin carrier C described later is fitted is fixed to the gear d1 so as to rotate integrally with the gear d1.

Y is a yarn that is unwound from a bobbin mounted on a bobbin carrier C and heads to a composition point Z on a mandrel m that is cantilevered by a mandrel supporting device M, and y is a substantially cylindrical shape. Frame Fb 'of machine base Fb
Is unwound from a bobbin carrier C which is arranged substantially horizontally, is guided in a substantially right angle direction by a guide roller f6 attached to a machine base Fb, and is inserted into a hollow bolt f3. It is a yarn for a middle yarn or a yarn for reinforcement (hereinafter, simply referred to as a "filament for a medium yarn") toward Z.

The gear d is driven by a suitable driving means such as a motor.
By rotating 1 to rotate the impeller d2,
The engagement shaft c1 of the bobbin carrier C fitted in the groove formed in the impeller d2 is moved to move the bobbin carrier C along the track. As described above, by running the bobbin carrier C along the track formed in the curved upper plate U, a large number of yarns Y are interlaced to form the braid b on the mandrel m. If necessary, the yarn y for the middle thread is wound from the bobbin carrier C arranged substantially horizontally on the frame Fb ′ of the machine base Fb, and the yarn is rewound from the bobbin carrier C traveling along the track. The braid b is formed by intertwining with Y.

Next, the bobbin carrier C will be described with reference to FIG. 4, which is a front view of the bobbin carrier C. In FIG. 4, c2 is an upper flange, and the upper flange c
2, a mast c4 having a U-shaped cross section and a spindle c5 in which a yarn guide portion c3 is rotatably arranged at the tip end are provided upright. A bobbin c6 around which the yarn Y is wound is inserted and attached to the spindle c5, and a fryer c8 having a bearing c7 is rotatably fitted to the tip end of the spindle c5.

A slit (not shown) extending in the vertical direction is provided at the tip of the spindle c5, and a pair of hook members c9, c whose tip is substantially triangular is provided in the slit.
9'is arranged, and the lower ends of the hook members c9, c9 'are pivotally supported by a shaft (not shown) attached to the spindle c5. The hook members c9, c9 'are constantly urged in directions away from each other by an elastic member such as a compression spring arranged between the hook members c9, c9', and the bobbin c6 or the flyer c8 is hooked on the hook members c9, c9 '.
The hook members c9, c9 'are rotated in a direction in which they approach each other when they are inserted into the bobbin c6 or the flyer c8 so that they can be mounted on the spindle c5. Bobbin c6 or flyer c8 is spindle c5
When mounted on the bobbin c, the hook members c9, c9 'are expanded in a direction in which they are separated from each other by an elastic member such as a compression spring.
6 or the fryer c8 is configured so as not to come out of the spindle c5.

Reference numeral c6 'is a cylindrical bobbin cover, which is attached to the upper flange c2. The cylindrical bobbin cover c6 'is wound around an adjacent bobbin when the yarn Y wound around the bobbin c6 is pulled out or droops when the bobbin carrier C is inclined or positioned upside down. This is to prevent troubles such as being entangled with the thread that is present or entangled with other members of the braider.

A tension washer c11 and a guide roller c1 are arranged in this order from the bottom in a substantially U-shaped frame c10 of the yarn guide portion c3 arranged at the tip of the mast c4.
2. A slack eliminating member c13 and a guide roller c14 are arranged. A guide portion c15 having a guide roller c15 'is attached to the tip of the slack eliminating member c13, and the other end of the slack eliminating member c13 has a coil spring c.
One end of 16 is attached, and the coil spring c16
The other end of is attached to the frame c10. The slack eliminating member c13 is pivotally supported on the frame c10 via a shaft member c17 ′ attached to a bearing member c17 arranged on the frame c10, and is always counterclockwise in FIG. 4 by a coil spring c16. It is biased to rotate. Therefore, when the yarn Y unwound from the bobbin c6 becomes loose, the slack eliminating member c13 rotates counterclockwise around the shaft member c17 'in FIG. 4 to absorb the looseness of the yarn Y. Is configured. The through hole c through which the yarn Y is inserted is provided in the frame c10 adjacent to the tension washer c11 and the guide roller c14.
18 and c19 are drilled. The substantially U-shaped frame c10 is configured to be rotatable clockwise about an axis c20 disposed on the mast c4. When the bobbin c6 or the fryer c8 is mounted on the spindle c5, the frame c10 is used. Is rotated clockwise to create a space above the spindle c5,
The bobbin c6 or the fryer c8 is attached to the 5. After mounting the bobbin c6 or the fryer c8 on the spindle c5, the frame c10 is rotated counterclockwise and arranged at the position shown in FIG. Further, the frame c10 is configured to be held in the position shown in FIG. 4 by an appropriate locking means unless the locking means is released.

In FIG. 4, c21 is a substantially elliptical lower flange, and c22 is disposed between an upper flange c2 and a lower flange c21 which are slidably fitted into a track formed in the upper plate U. It is a guide part. The bobbin carrier C is configured to travel along the track while being held substantially perpendicular to the upper plate U by sandwiching the upper plate U by the upper flange c2 and the lower flange c21.

Next, the composition position stabilizing guide member G will be described with reference to FIGS. The composition position stability guide member G includes a substantially annular first composition position stability guide member g1 and a first composition position stability guide member g1 which are attached to a frame g1 ′ extending substantially horizontally from the intermediate frame Fb ″ of the machine base Fb. On the other hand, the floor member Fr arranged at a predetermined interval.
The second composition position stabilizing guide member g2, which is also substantially annular and is attached to the front end of the frame g2 'that is erected on the above.

The first composition position stabilizing guide member g1 and the second
The composition position stability guide member g2 is arranged with a predetermined interval between the yarns Y that sway as the bobbin carrier C, which travels while meandering along a track formed in the upper plate U, moves laterally. The first composition position stability guide member g1 and the second composition position stability guide member g2 guide the composition point to keep the composition point at a substantially constant position, and thus the composition point is substantially constant. By maintaining the position, a stable composition can be realized without the yarn Y to be composed being entangled in an irregular state near the composition point,
Therefore, it is possible to manufacture a braid b having a uniform shape and a stable braid b.

Next, the bobbin carrier C as described above.
A tubular body continuous molding system for continuously molding a braid b composed by using a braider B traveling along a track into tubular bodies having various cross-sectional shapes will be described. First, the overall configuration of the tubular body continuous molding system using the braider B will be described with reference to FIG. M is a mandrel supporting device for cantilever supporting a metal mandrel m, preferably a metal mandrel m whose surface is coated with a resin having a low friction coefficient such as Teflon. The tip portion m ′ of the mandrel m inserted into the member is a tubular body b ′ having a predetermined cross-sectional shape of the braid b.
(Note that the braid b impregnated with resin and molded and hardened to have a predetermined cross-sectional shape is referred to as a "tubular body".) However, it is preferable that the tubular body b ′ having various cross-sectional shapes can be exchanged by suitable means such as screwing means in order to form the tubular body b ′. The mandrel m is preferably tapered so that it becomes thinner toward the tip. In particular, it is preferable that the mandrel m after being located in the molding and curing device H described later is tapered.

P is a resin impregnating device having a resin liquid tank p1 for impregnating the braid b formed around the mandrel m with, for example, a liquid thermosetting resin. The resin liquid tank p1 has a resin liquid tank p1. As shown in FIG. 6, which is a partially enlarged perspective view of the resin liquid tank p1, the liquid state in the resin liquid tank p1 from around the braid b composed on the mandrel m inserted in the resin liquid tank p1 is shown. Lip members p2 and p2 'made of an elastic material such as rubber for sealing the resin so as not to leak are attached to windows p3 and p3' formed in the side wall of the resin liquid tank p1. . Further, the resin impregnating apparatus P is provided with a heater p5 with a temperature controller p4 for adjusting the viscosity of the liquid resin in the resin liquid tank p1.

H is a die member h1 for molding the braid b on the mandrel m impregnated with resin into a predetermined sectional shape.
And a molding and curing device configured by a molding chamber h2 for heating and curing the braid b on the mandrel m molded into a predetermined cross-sectional shape by the die member h1. As shown in FIG. 7 which is a partially enlarged perspective view showing a mounting state of the die member h1 of the molding and curing apparatus H and FIG. 8 which is a cross-sectional view taken along the line I-I of FIG. Is a wall portion h of the molding chamber h2 by a suitable fastener h3 such as a bolt or a nut.
2 ', and the rear part h1' of the die member h1 is
A blower h5 having an appropriate heating means h4 such as a heater at its tip extends in a molding chamber h2 having an appropriate length. A suitable fastener h6 such as a screw is provided inside the die member h1.
The die h7 is attached so that it can be replaced.

9 is a cross section taken along the line I--I of FIG.
As shown as an example in (a) (b) (c),
A mandrel m whose tip m ′ has a predetermined cross-sectional shape,
By arranging it inside the die h7 having a shape corresponding to the tip m'of the mandrel m, the tip m'of the mandrel m is
Also, the tubular body b ′ having various cross-sectional shapes corresponding to the cross-sectional shape of the die h7 can be molded. FIG. 9A shows an example of molding a tubular body having a triangular cross section, FIG. 9B shows an example of molding a tubular body having a quadrangular cross section, and FIG. 9C shows an example. This is an example of molding a tubular body having a U-shaped cross section. Of course, these are given as one example, and tubular bodies b ′ having various cross-sectional shapes can be appropriately molded. It is preferable that the tip end m ′ of the mandrel m is configured to gradually change from a circular shape to a predetermined cross-sectional shape for smooth molding of the tubular body b ′.

A die h7 arranged inside the die member h1.
The braided b molded by the cross-sectional shape of the above and the shape of the corresponding tip portion m ′ of the mandrel m is hardened by the hot air sent by the blower h5 heated by the heating means h4, and has a predetermined cross-sectional shape. molded into b '.
Then, it is cut into a predetermined length by a suitable cutting means (not shown). In addition, in FIG. 5, A is a device for pulling the tubular body disposed near the outlet of the molding and curing device H.

Through the above steps, the resin-cured tubular body b'can be continuously molded from the braid b composed of the braider B. The braider B is not limited to the one described above, and the braid b is continuous.
Can be used, and the die member h1 of the molding and curing apparatus H can be a molding roller having a predetermined shape.

[0025]

Since the present invention is constructed as described above, it has the following effects.

A tubular body having an arbitrary cross-sectional shape cured with a resin can be continuously molded from a braid composed of a braider.

Since the molded and cured tubular body can be manufactured in a consistent continuous molding system, a uniform quality tubular body is obtained.

[Brief description of drawings]

FIG. 1 is a front view of an exemplary braider used in the tubular body continuous molding system of the present invention.

FIG. 2 is a side view of the braider of FIG.

FIG. 3 is an enlarged front view of a drive device for causing a bobbin carrier including a cross section taken along line I-I of FIG. 2 to travel along a track.

FIG. 4 is a front view of the bobbin carrier.

FIG. 5 is an overall configuration diagram of a tubular body continuous molding system using a braider.

FIG. 6 is a partially enlarged perspective view of a resin impregnating device.

FIG. 7 is a partially enlarged perspective view showing an attached state of a die member of a molding and curing device.

8 is a cross-sectional view taken along the line II of FIG.

9 is a cross-sectional view of the tip of the die and mandrel taken along the line I-I of FIG.

[Explanation of reference symbols] B ... Brader H ... Molding and curing device M ... Mandrel support device P ...・ ・ ・ ・ ・ ・ Resin impregnation device h1 ・ ・ ・ ・ ・ ・ Die member h2 ・ ・ ・ ・ ・ ・ ・ Molding room p1 ・ ・ ・ ・ ・ ・ ・ Resin liquid tank

Claims (1)

[Claims] 1. A method of forming a braid around a mandrel supported in a cantilever manner, impregnating the braid on the mandrel with a resin, and then molding and curing the braid into a predetermined cross-sectional shape to form a tubular body. Characteristic tubular body continuous molding system.