JP2014152412A - Torchon lace machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a torchon lace machine capable of providing an optimum fabric as an industrial composite material (for example, a structural material for aircrafts) which does not cause brittleness in a carbon fiber yarn due to the folding thereof and is not reduced in non-deforming strength due to the elongation thereof.SOLUTION: A torchon lace machine of the present invention knits a knitted product of carbon fiber yarns in an approximately semicircular shape and includes traction means for expanding the knitted product outward. When carbon fiber yarns are woven (knitted) in a bias manner, the knitted product can be made while being always extended in a bias direction. In this case, when sub-knitted products knitted with waste yarns are made on both side edges of the knitted product, even if the sub-knitted products are damaged during traction by the traction means, they can be separated later.

Description

  The present invention relates to a torsion lace machine in which a knitted product can be extended in the bias direction when weaving (knitting) carbon fiber yarns into a biased shape.

In general, a torsion lace machine is configured to knit a knitted yarn into a knitted product having a cylindrical shape (circular cross section), and to squeeze the knitted product into a flat shape while being held in a cylindrical shape by a pinching roller and to wind the knitted product with a winding roller. (See JP-A-9-111626). The knitted product knitted with this torsion lace machine usually uses thread removal at appropriate locations around the circumference, and after knitting, the thread is pulled out and flattened for various uses (for example, hem decorations for women's clothes, collar decorations) Etc.). Therefore, carbon fiber yarn is used in a torsion lace machine, knitted into a cylindrical shape using a pulling yarn, then flattened in a tubular shape, wound up, and then pulled out and opened to remove the yarn from the carbon fiber yarn. It can also be made as an industrial composite material (eg, aircraft structural material) that exhibits a non-deformable force in the direction.
JP-A-9-111626

  However, the carbon fiber exhibits extremely high strength against tensile in the length direction, but is brittle against bending. Therefore, as in Patent Document 1, there is a problem that when the carbon fiber yarn is knitted in a biased shape and crushed into a flat shape with a pinching roller and flattened, this portion becomes brittle. . In addition, if the carbon fiber yarn is woven (knitted) in a biased shape with a torsion lace machine, the carbon fiber yarn is loosened and does not extend in the bias direction, and the elongation in the bias direction occurs. The non-deformation force may be reduced, and it was not satisfactory as an industrial composite material (for example, an aircraft structural material).

  The present invention is intended to solve the above-mentioned problems, and the object of the present invention is to prevent the carbon fiber yarn from being brittle due to breakage, and can be prepared in a state of being stretched in the bias direction in advance. It is an object of the present invention to provide a torsion race machine capable of obtaining an ideal industrial composite material (for example, an aircraft structural material) that does not reduce non-deformation force due to the above.

  In order to achieve the above object, the present invention is characterized by comprising traction means for knitting a knitted product made of carbon fiber yarn in a substantially semicircular shape and expanding the knitted product outward, When weaving (knitting) the yarn into a biased shape, it was constructed so that it could be created while always being stretched in the biased direction.

  Further, the invention of claim 2 is characterized in that the knitted product includes a sub-knitted product knitted by scraping on both side edges of the knitted product. Although it may be removed, a sub-knitted product is knitted from both ends of the knitted product made of carbon fiber yarns by discarding the yarn, and the sub-knitted product is brought into contact with the traction means.

  According to the present invention, the carbon fiber yarn can be knitted into a semicircular shape, opened, and wound, so that no brittleness caused by the breakage of the carbon fiber yarn is caused. Moreover, even if the knitted product (main product) made of carbon fiber yarn is damaged when the both side edges are expanded outward by the traction means, if the knitted product part is removed, it is extended in the bias direction. Can be created in the state. Therefore, various excellent effects such as that the knitted product itself can be used as an industrial composite material (for example, an aircraft structural material) are exhibited.

  Further, according to the invention described in claim 2, if there is a possibility of being damaged at the time of towing depending on the type of towing means, knitting a sub knitted product by discarding on both side edges of the knitted product made of carbon fiber yarn, If the traction means is brought into contact with this and expanded outward, the sub-knitted product formed by discarding can be separated later. Therefore, the effective part which can be used as a structural material for aircrafts has an excellent effect of becoming wider.

  Next, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a front view showing a space between a race guide and a take-up roller of a torsion race machine, FIG. 2 is a plan view schematically showing a knitted product knitted in a semicircular shape, and FIG. 4 is a plan view showing the relationship between the spreading means and the knitted product, and FIG. 5 is a side view showing the spreading means.

  As shown in FIG. 1, the torsion lace machine 1 of the present application moves the spindle runner 2 left or right along the circumference by the rotation of a large number of rotor metals (not shown) arranged around (for example, 180 ° ± α). The carbon fiber yarn 4 unwound from the bobbin 3 fitted into the spindle 2 'mounted on the spindle runner 2 is crossed at the race knitting portion 4' and beaten with a lead knife 5, As shown in FIG. 2, a semi-circular knitted product (main product) 6 is knitted. The knitted product 6 moves up in the race guide 7, is opened from a semicircular shape to a flat shape, and is taken up by a take-up roller 8. In other words, unlike the conventional case, the cylinder is not crushed and wound up.

  The knitted product 6 is knitted in a biased shape using the carbon fiber yarns 4, and a sub-knitted product 9 is knitted on both side edges of the knitted products (low-cost yarns). The sub-knitted product 9 comes into contact with the traction means 10 and 10 as shown in FIGS. 1 and 2 while ascending in the race guide 7. Of course, the side edges of the knitted product 6 may be in direct contact with the traction means 10, 10. As shown in FIG. 4, the pulling means 10, 10 is a roller 12 in which a projecting needle 11 is planted on a peripheral surface thereof and is superimposed on a shaft bar 13 in an oblique manner (a temple). Since the protruding needle 11 on the surface is inserted into the sub-knitted product 9, when the knitted product 6 rises, the roller 12 is also rotated in accordance with this, and the roller 12 expands the knitted product 6 outward by the inclination. Will be opened.

  As shown in FIG. 5, the traction means 10 and 10 are in contact with the sub-knitted product 9 via the side surfaces thereof, so that the knitted product (main product) 6 is formed on the sub-knitted product 9 knitted on both side edges. Directly contact and expand in the directions of arrows A and A ′. When the sub-knitted product 9 is expanded, the knitted product (main product) 6 is also stretched flat.

  The pulling means 10 and 10 are pivotally supported (fixed) on the machine main body 14 via a shaft rod 13, and the inclination angle of the roller 12 is controlled by operating a handle portion 13 ′ provided at the end of the shaft rod 13. Can be changed. That is, by operating the handle portion 13 ', the inclination angle of the roller 12 stacked in an oblique manner can be changed, so that the expansion angle of the sub-knitted product 9 can be freely selected.

  The sub-knitted product 9 that will be damaged greatly by being stabbed into the projecting needle 11 of the roller 12 is finally separated from the knitted product (main product) 6, and thus is constituted by discarding. Yes. Further, since the sub-knitted product 9 is separated from the knitted product 6, the function of the knitted product 6 itself used also as an aircraft structural material or the like is not hindered. Needless to say, this does not limit the use of the carbon fiber yarn itself as a discarded yarn.

  Next, the operation of the present torsion race machine 1 will be described. First, it was unwound from a bobbin 3 fitted in a spindle 2 'mounted on a spindle runner 2 that moves left or right along the circumference by the action of a large number of rotor metals (not shown) arranged around the circumference. The carbon fiber yarns 4 are crossed at the lace knitting portion 4 ′ and knitted as a semi-circular knitted product 6 by striking with a lead knife 5. At the same time, sub-knitted products 9, 9 are formed on both side edges of the knitted product 6. Knitted by scrapping.

  The knitted product 6 and the sub-knitted products 9, 9 are raised through the race guide 7. Accordingly, the sub-knitted products 9 and 9 are expanded outwardly in contact with the traction means 10 and 10 installed in the race guide 7, and accordingly, the knitted product (main product) 6 is biased. It will be extended in the direction.

  The knitted product 6 and the sub-knitted products 9, 9 extended in the bias direction are flattened and wound around the winding roller 8. Thereafter, the sub-knitted products 9, 9 are separated from the knitted product 6, while the knitted product 6 is utilized as an industrial composite material that exhibits non-deformation force in the bias direction by the carbon fiber yarn 4.

  The present invention is a torsion race machine that uses carbon fibers arranged in a flat shape and can be formed in a flat woven shape in the bias direction, and is used as a material for increasing the strength of aircraft, space rockets, etc. It can easily produce industrial composite materials, and is widely applicable not only in the torsion lace industry.

It is a front view which shows from the race guide of a torsion race machine to a winding roller. It is a top view which shows roughly the knitted goods knitted by the semicircle shape. It is a side view which shows between a race guide and a winding roller. It is a top view which shows the relationship between an expansion means and a knitted product. It is a side view which shows an expansion means.

DESCRIPTION OF SYMBOLS 1 This application torsion race machine 2 Spindle runner 2 'Spindle 3 Bobbin 4 Carbon fiber yarn 5 Lead knife 6 Knitted product 7 Race guide 8 Winding roller 9 Sub-knitted product 10 Pulling means 11 Projection needle 12 Roller 13 Shaft bar 13' Handle part

Claims (2)

  A torsion lace machine characterized by comprising traction means for knitting a knitted product made of carbon fiber yarns in a substantially semicircular shape and expanding the knitted product outward.   2. The torsion race machine according to claim 1, wherein the knitted product includes a sub-knitted product knitted on both side edges by yarn discarding.

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