JP2576658Y2 - Long member of loom - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a long member such as a back roller, a breast beam, a surface roller, a press roller, a guide beam, and a cross roll in a loom.

[0002]

2. Description of the Related Art In a loom, for example, Japanese Patent Application Laid-Open No. 58-540
As disclosed in Japanese Patent Publication No. 46, various long members such as a back roller, a breast beam, a surface roller, a press roller, a guide beam, and a cross roll are known. This will be described with reference to FIG. In FIG. 4, the warp W wound around the warp beam 101 is wound around the back roller 102, reaches the weaving front 105 via the heald 103 and the reed 104,
Due to the opening movement of the heald 103 and the beating movement of the reed 104, it is woven on the woven fabric 106 by being vertically interlaced with the weft (not shown) inserted by the weft insertion mechanism (not shown). After the woven fabric 106 is wound around the breast beam 107, it passes through the contact surface between the breast beam 107 and the surface roller 108, and is wound around the circumference of the surface roller 108 substantially one round. It is wound around the press roller 109 through the contact surface between the surface roller 108 and the press roller 109, and the surface roller 1
08 and the woven fabric 106, and is wound around the cross roll 110 while being pulled at a constant speed. The back roller 102 is provided with a wear resistance and a corrosion resistance by coating a metal surface layer such as a stainless steel pipe on a core body which is an iron cylindrical roller body having both ends opened. I have. Since the back roller 102 performs a so-called easing motion that reciprocates in the longitudinal direction of the loom in small increments in response to a change in the tension of the warp W, the back roller 102 is required to have high deflection rigidity while being lightweight.

[0003] Under such circumstances, use of a back roller 114 as shown in FIG. 5 has been attempted in recent years.
The back roller 114 comprises a core body 115 which is a cylindrical roller body having both ends opened and made of a composite reinforced resin (FRP) such as a resin containing carbon fiber. Covering the metal surface layer 116,
Both ends of the metal surface layer 116 are bent radially inward.
In addition, a metal flange 118 having a shaft 117 projecting outward is inscribed at both ends of the core body 115. The flange 118 is fastened to the core body 115 with a screw 119 penetrating from the metal surface layer 116 to the core body 115.

[0004]

However, in the conventional example shown in FIG. 5, the metal surface layer 4 is merely coated on the core body 115, and the composite reinforced resin forming the core body 115 is elastic. Because of the body, the metal surface layer 116 is distorted, and the distortion is promoted over time by repeated easing movements.
There is a possibility that the warp W may not be sent uniformly with respect to the rotation amount of 14.

[0005] In view of the above, the object of the present invention is to reduce the overall weight of a long member such as a back roller and to increase the accuracy and durability of a metal surface layer.

[0006]

According to the present invention, a long member of a loom is provided with a core body made of a composite reinforced resin, and a metal surface layer coated with a core layer through a polymer layer and reduced in diameter. It consists of.

[0007]

The uniform diameter can be secured in the longitudinal direction by reducing the diameter of the metal surface layer. In addition, since the metal surface layer clamps the core body via the polymer layer, the core body made of the composite reinforced resin is tightened without applying excessive stress during the diameter reduction processing. Therefore, the core body is not broken at the time of diameter reduction processing, and the metal surface layer is not partially distorted by the external force acting on the warp or the woven fabric during the operation of the loom.

[0008]

FIG. 1 shows a back roller as a long member of a loom according to one embodiment. In FIG. 1, a back roller 1 includes a core body 2 made of a composite reinforced resin such as FRP,
The core body 2 includes a metal surface layer 4 covered with a flexible polymer layer 3 and reduced in diameter. Specifically, the core 2 constitutes a cylindrical roller body made of a composite metal resin and having both ends opened. The polymer layer 3
It is a resin adhesive mainly composed of a urethane-based polymer material. The metal surface layer 4 has a seamless cylindrical shape made of metal such as stainless steel having an inner diameter slightly larger than the outer diameter of the core body 2.

Then, as shown in FIG. 2, a metal surface layer 4 is coated on the outer peripheral surface of the core body 2 with a resin adhesive 3 interposed therebetween, and then is drawn through a die 5. Thus, the metal surface layer 4 is reduced in diameter by the processing hole 6 having a dimension slightly smaller than the outer diameter of the metal surface layer 4 in the die 5. The diameter reduction of the metal surface layer 4 by the die 5 is performed once or twice. Then, the metal surface layer 4 is brought into close contact with the outer peripheral surface of the core body 2 via the resin adhesive 3. At the time of this diameter reduction processing, stress is not directly applied to the core body 2 made of the composite reinforced resin, but is absorbed by the resin adhesive 3, so that the core body 2 is tightened without applying excessive stress. In this state, cracking of the core body 2 can be prevented. Further, the resin adhesive 3 is compressed and becomes a polymer layer after curing,
Further, the adhesion between the metal surface layer 4 and the core body 2 is enhanced. Thereafter, as shown in FIG. 3, screw insertion holes 7 are formed in the core 2 from the outer peripheral sides of both ends of the metal surface layer 4, and steps 8 are formed inside both ends of the core 2. Further, as shown in FIG.
A plurality of metal flanges 10 formed with indentations are inscribed in stepped portions 8 on both inner sides of the core body 2, and screws 11 are fastened from the screw insertion holes 7 to the screw holes 12 of the flange 9. Thereby, the back roller 1 is configured.

According to this embodiment, the diameter of the stainless steel metal surface layer 4 is reduced to a uniform diameter in the longitudinal direction. Further, since the metal surface layer 4 clamps the core body 2 made of the composite reinforced resin via the polymer layer 3, the core body 2 made of the composite reinforced resin is tightened without applying excessive stress. ing. For this reason, the core body 2 can be prevented from cracking at the time of diameter reduction processing, and even if the back roller 1 repeats the easing motion during operation of the loom, the metal surface layer 4 does not partially deform. Therefore, the axial uniformity of the diameter of the metal surface layer 4 is maintained for a long time, and the feed amount of the warp W with respect to the rotation amount of the back roller 1 is always uniform.

The back roller 1 has a metal surface layer 4 that covers a core body 2 made of a composite reinforced resin with a polymer layer 3 interposed therebetween.
Is squeezed into a perfect circle using a jig such as a die 5 shown in FIG.
Since it can be absorbed by the polymer layer 3, the core body 2 itself does not need to be processed with high precision.

In addition, the present invention is applied to a device other than the back roller 1.
It can also be applied to long members such as breast beams, surface rollers, press rollers, guide beams, and cross rolls.

[0013]

As described above, according to the present invention, a core body made of a composite reinforced resin and a metal surface layer coated with a polymer layer via a polymer layer and reduced in diameter are used. In addition, a uniform diameter is secured in the longitudinal direction by reducing the diameter of the metal surface layer. Further, since the metal surface layer fastens the core body via the polymer layer, the core body made of the composite reinforced resin is tightened without applying unreasonable stress during the diameter reduction processing. Therefore, the core can be prevented from cracking at the time of diameter reduction processing, and the metal surface layer is not partially distorted by the external force acting from the warp or the woven fabric during the operation of the loom. Therefore, when employed in the back roller, the feed amount of the warp with respect to the rotation amount of the back roller is always uniform.
In addition, since the roundness error at the time of molding the core is absorbed at the time of reducing the diameter of the metal surface layer, there is an advantage that the core does not need to be processed with high precision.

[Brief description of the drawings]

FIG. 1 is a partially cutaway side view showing one embodiment.

FIG. 2 is a cross-sectional view illustrating a diameter reduction process of a metal surface layer according to one embodiment.

FIG. 3 is a cross-sectional view showing a state where the diameter is reduced in one embodiment.

FIG. 4 is a configuration diagram showing a conventional loom.

FIG. 5 is a partially cutaway side view showing a conventional back roller.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Back roller 1 2 ... Core body 3 ... Polymer layer 4 ... Metal surface layer

Claims (1)

(57) [Scope of request for utility model registration] 1. A long member of a loom, comprising: a core body made of a composite reinforced resin; and a metal surface layer covered with a polymer layer via a polymer layer and reduced in diameter.