JPH0754250A - Braiding method - Google Patents

Abstract

PURPOSE:To reduce the number of process and improve the productivity by impregnating a resin into yarn moving toward the braiding point of a braider and then braiding the treated yarn. CONSTITUTION:In a braider for forming braid, a number of holes (h1') having a specific diameter are bored in the bottom of a cyclic resin tank (h1) arranged so as to surround a mandrel (m) and a resin liquid is dropped and impregnated from the hole (h1') into yarn Y pulled out from a bobbin carrier C traveling along the track of the braider and moving toward a braiding point Z and the residual resin is returned through a resin housing container (h2) and a circulating pipe (h3) to the resin tank (h1) and reutilized. After the yarn is subjected to resin impregnation treatment, a mandrel (m) is removed from a handle part (r1) of a robot R and transferred to a resin curing apparatus, etc., and forming of the braider or curing treatment, etc., of the resin are carried out to form a specific formed body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a braiding method for impregnating a braid composed of a braider with a resin.

[0002]

2. Description of the Related Art Conventionally, various braiders for forming braids have been known, and a braid composed by such a braider is once removed from the braider and then impregnated with a resin to cure the braid. It is also known to mold tubular bodies.

[0003]

In the conventional method of forming a tubular body by impregnating and curing a resin into a braid, since the braider and the resin impregnation step are not consistently connected, a braid composed of Since it is constructed so that it is once removed from the braider and then sent to the next resin impregnation step, the productivity is poor and the tubular body to be molded is expensive. 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.

An object of the present invention is to solve the problems of the conventional braiding method of molding a tubular body by impregnating a braid with a resin, and to provide a braiding method having excellent productivity.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is to construct a braid after impregnating a yarn toward a composition point of a braider with a resin. 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]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a braiding method will be described with reference to FIG. 1, which is a front view of a braider to which the braiding method of the present invention is applied. In addition, in FIG. 1, a rectangular portion shown by a dotted line above the bobbin carrier C is shown by omitting a yarn guide portion c3 described later.

On the frames Fr and Fr 'hanging from the frame Fc such as the ceiling, the substantially cylindrical machine base F of the braider B is mounted.
By attaching b, the braider B is suspended from the frame Fc so that the curved upper plate U becomes substantially horizontal. The curved upper plate U is attached substantially horizontally by suitable fixing members f2 and f2 'which are arranged at a predetermined interval on a machine frame f1 arranged in a machine stand Fb having a substantially cylindrical shape. A well-known track is formed in the upper plate U in the circumferential direction. Y is rewound from the bobbin mounted on the bobbin carrier C and attached to the hand part r1 of the robot R suspended from the frame Fc (in FIG. 1, as an example, a T-shaped mandrel). Is shown.) Composition point Z above
It is a yarn or a fiber bundle (hereinafter, simply referred to as a “yarn”) that is directed toward.

The engagement shaft c of the bobbin carrier C fitted in the groove formed in the impeller is rotated by rotating a known gear and impeller by a driving means (not shown).
1 is moved to move the bobbin carrier C along the track. As described above, the bobbin carrier C is caused to travel along the trajectory formed on the curved upper plate U arranged substantially horizontally so that a large number of yarns Y are interlaced and the robot R appropriately positions them. The braid b is formed on the controlled mandrel m.

Next, the bobbin carrier C will be described with reference to FIG. 2, which is a front view of the bobbin carrier C used in the present invention. Note that, as shown in FIG. 1, the bobbin carrier C travels in a substantially sideways state along a track formed in an upper plate U arranged substantially horizontally, but in FIG. Is the bobbin carrier C in the vertical state
Will be explained.

In FIG. 2, c2 is an upper flange,
The upper flange c2 is provided with 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 portion. Yarn Y on the spindle c5
A bobbin c6 around which is wound is inserted and a flyer 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.

A cylindrical bobbin cover c6 'is attached to the upper flange c2. Since the bobbin carrier C used in the present invention travels along the track in the lateral state, the cylindrical bobbin cover c6 ′ causes the yarn Y wound around the bobbin c6 to hang down.
It has a function of preventing troubles such as being entangled with a yarn wound around an adjacent bobbin or being entangled with other members of the braider.

A tension washer c11 and a guide roller c1 are arranged in this order from the bottom on the substantially U-shaped frame c10 of the yarn guide 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. 2 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. 2 to absorb the looseness of the yarn Y. Is configured.

The substantially U-shaped frame c10 is a mast c4.
Is configured to be rotatable clockwise about a shaft c20 disposed in the spindle c5. When the bobbin c6 or the flyer c8 is mounted on the spindle c5, the frame c10 is rotated clockwise to rotate the spindle c5. A space is created above and the bobbin c6 or the fryer c8 is mounted on the spindle c5. 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 by the appropriate locking means at the position shown in FIG. 2 unless the locking means is released. In addition, adjacent to the tension washer c11 and the guide roller c14, through holes c18 and c19 through which the yarn Y is inserted are formed in the frame c10.

In FIG. 2, 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 horizontally with respect to the upper plate U by sandwiching the upper plate U by the upper flange c2 and the lower flange c21.

Next, the resin impregnation apparatus H will be described with reference to FIGS. 3 and 1 which are enlarged perspective views of the resin impregnation apparatus H for impregnating the yarn Y toward the composition point Z with resin.

H1 is an annular resin tank arranged so as to surround a mandrel m supported by a frame (not shown) that is suspended from a frame Fc such as a ceiling. A large number of holes h1 ′ having a predetermined diameter are formed so as to be dropped. Resin tank h1
As shown in FIG. 1, above the braider B, the resin is dropped onto the yarn Y drawn from the bobbin carrier C traveling along the track of the braider B and heading toward the composition point Z, so that the resin drops. It is arranged.

H2 is a resin container containing a resin tank h1 and a filter h2 'disposed below the braider B for accommodating the residual resin dropped on the yarn Y, and h3 is a circulation pipe for returning the resin stored in the resin storage container h2 to the resin tank h1 by the pump h3 ′. As described above, the resin dropped from the resin tank h1 is impregnated in the yarn Y toward the composition point Z, and the remaining dropped resin is accommodated in the resin accommodating container h2 and again through the circulation pipe h3. It is configured to be returned to the resin tank h1.

As described above, the bobbin carrier C is
A large number of yarns Y are interlaced by running along a trajectory formed in a curved upper plate U arranged substantially horizontally, and a braid b is appropriately placed on a mandrel m whose position is controlled by a robot R. At the time of composition, the resin is impregnated by dropping the resin from the resin tank h1 onto the yarn Y drawn from the bobbin carrier C toward the composition point Z. After that, the mandrel m is removed from the hand portion r1 of the robot R, transferred to a resin curing device or the like, and the braid b is molded or the resin is cured to manufacture a molded body.

Although the T-shaped mandrel m is used as the mandrel m in the above-mentioned embodiment, various mandrel m such as H-shaped, I-shaped, cross-shaped or tetrapot type can be used. Can be used.

[0021]

Since the present invention is constructed as described above, it has the following effects. Since the yarn is impregnated with the resin when the braid is composed in the braider, the productivity of the molded product made of the braid can be improved. Since the braid is composed of the yarn impregnated with the resin, the resin is spread over the entire braid, so that a high-strength molded product can be molded.

[Brief description of drawings]

FIG. 1 is a front view of a braider to which the present invention is applied.

FIG. 2 is a front view of a bobbin carrier.

FIG. 3 is a perspective view of a resin impregnation device.

[Explanation of symbols]

 B: Braider C: Bobbin carrier m: Mandrel h1: Resin tank h2 ..... Resin container

Claims (1)

[Claims] 1. A braiding method, characterized in that a braid is formed after impregnating a yarn toward a composition point of a braider with a resin.