JPH089183Y2 - Ear processing device for loom - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial field of application) The present invention relates to a woven fabric ear treating device for treating the ears of a woven fabric woven on a loom on the loom. In particular, the present invention relates to a selvage treatment device for a loom that cuts and melt-fixes the selvage of a woven fabric by utilizing high-frequency micro vibration.

(Prior Art) As a processing device for cutting the selvages of a woven fabric woven on a loom, as described in Japanese Patent Laid-Open No. 54-88357, an ultrasonic vibration device is used to slightly vibrate at high frequency. There is known a processing device in which a woven selvage portion is pressed between a horn and an anvil supported by a loom body, and the selvage portion is sequentially crushed and cut as the woven cloth moves. At this time, the horn collides with the anvil and the horn and the anvil are heated to a high temperature of 150 to 160 ° C. Therefore, if polypropylene spun yarn having a relatively low melting point is arranged as the warp of the selvage, it is shown in FIG. When the ears 3 of the woven cloth 2 are cut by the pair of left and right processing devices 1 as described above, the warp yarns 4 in the ears that come into contact with the horn (not shown) at the tip of the processing device 1 are melted and adhere to the wefts. As a result,
A woven selvage free of warp fray can be obtained, which is cut into a desired fabric width and wound into a beam.

(Problems to be Solved by the Invention) However, in the above-described conventional processing apparatus 1, as shown in FIG. 5, the horn 6 attached to the lower end of the ultrasonic vibration device 5 is interleaved with the woven fabric 2. The anvils 7 arranged so as to face each other were formed in a symmetrical abacus ball shape. That is, the anvil 7 fixed to the mounting metal fitting 10 provided in the width direction of the woven cloth 2 with the bolt 10a has the maximum diameter at the center in the axial direction, and the outer periphery is bilaterally symmetrical with respect to the axial direction by an angle α. Is inclined at. The woven cloth 2 was sandwiched between the outer peripheral tip 7a, which is the maximum diameter portion, and the horn 6.

At this time, the woven fabric 2 is struck by the high frequency vibration by the horn 6 against the outer peripheral tip end 7a of the anvil 7, and is cut.
As shown in FIG. 6 (a), the larger the angle α _{1, the} outer peripheral tip
7a becomes sharp and the cutting performance is high. However, since the contact area A ₁ between the outer peripheral tip 7a and the woven cloth 2 is small, the amount of heat transferred from the heated anvil 7 to the woven cloth 2 is small,
The performance of melting the warp and fixing it to the weft is inferior.

On the contrary, as shown in FIG. 6 (b), when the angle α ₂ becomes small, the outer peripheral tip 7a of the anvil 7 becomes an obtuse angle, which deteriorates the cutting performance, but the contact area A ₂ becomes large, and therefore the melt fixing performance becomes high. Become.

Therefore, conventionally, it has been difficult to satisfy both the cutting performance and the melt-fixing performance without excess or deficiency. Woven cloth 2
Since the performance of these types varies depending on the thickness,
In the past, this was dealt with by adjusting the output of the ultrasonic vibration device.

The present invention has been made in view of the above points, and it is possible to satisfy both the cutting performance and the melt-fixing performance of the ears of a woven fabric without excess or deficiency, and moreover, in changing the type and thickness of the woven fabric. Another object of the present invention is to provide a selvage treatment device for a loom that can be easily handled.

[Constitution of device]

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a horn that is arranged at an ear portion of a woven fabric woven on a loom and that oscillates high-frequency micro-vibration, and is provided so as to face the horn. In the device for cutting and melting and fixing the woven fabric between the two by the operation of the horn, the anvil has a woven fabric on the throwing ear side and the anti-discarding ear side with respect to the anvil. It is characterized by different angles made by.

(Operation) According to the above configuration, the contact area between the anvil and the woven cloth is increased by reducing the angle formed by the woven cloth of the anvil on the anti-discarding ear side, and the heat of the anvil is applied to the woven cloth. Since it can be transmitted, the warp melts and adheres well to the weft. Further, by increasing the angle between the anvil and the woven fabric on the throw-away ear side, the woven fabric that is cut by being hit by the horn easily escapes downward, which facilitates cutting.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of this invention. In this figure, parts that are the same as or equivalent to the members shown in FIG. A processing device 1 for processing the selvages is provided in front of a cross roller (not shown) on both side selvages of the woven fabric woven on the loom. The processing device 1 includes a horn 6 attached to the lower end of an ultrasonic vibration device 5 as a high-frequency micro-oscillation device, and an anvil 9 that is pressed against the horn 6.

The ultrasonic vibration device 5 is attached to a loom body (not shown) so as to be movable toward the anvil 9, and is biased toward the anvil 9 by a spring (not shown) or the like. Further, the horn 6 is made of a special tool steel or the like in a substantially cylindrical shape, and is subjected to high frequency vibration by the ultrasonic vibration device 5 at a frequency of 30 kHz to 50 kHz and an amplitude of 20 μm to 30 μm. On the other hand, the anvil 9 is made of hard metal and is formed in a right-and-left asymmetrical abacus ball shape, and is fixed to the mounting bracket 10 with a bolt 10a. The mounting bracket 10 is mounted on the frame 11 of the loom.

The outer periphery of the anvil 9 is formed so that the ear 3 side is inclined at an angle α ₃ and the inner side of the woven fabric 2 is inclined at an angle β with respect to the outer peripheral tip 9a which is the maximum diameter portion. The angle α ₃ is 5 to 15 degrees, preferably 10 degrees, and the angle β is 30 to 90 degrees.

Next, the operation of this embodiment will be described. When the woven cloth 2 woven on the loom reaches the position of the processing device 1, the ears 3 on both sides of the woven cloth 2 are pinched between the horn 6 and the outer peripheral tip 9a of the anvil 9, and the woven cloth 2 The ears 3 are separated from the inner side of the woven fabric 2 along with the movement. At this time, the ears 3 of the anvil 9
Since the angle α ₃ of the outer circumference on the side is large, the horn 6
The ears 3 that have been crushed and crushed by being hit by the high-frequency vibrations of 2 easily escape and the cutting performance is improved. Further, since the angle β inside the woven fabric 2 of the anvil 9 is small, the area in which the outer peripheral tip 9a of the anvil 9 contacts the woven fabric 2 is large,
The heat from the hot anvil 9 is sufficiently transferred to the woven fabric 2.
Therefore, the warp yarn formed of the low melting point woven yarn is sufficiently melted and adhered to the weft yarn to obtain a woven fabric selvage portion without warp fraying.

According to this embodiment, the anvil 9 is left-right asymmetrical,
By setting the angle of the outer peripheral slope with respect to the woven fabric 2 to α ₃ <β, the cutting performance and the melt fixing performance of the selvage portion 3 can be improved.

The anvil 12 shown in FIG. 2 corresponds to the case where the angles α ₃ and β shown in FIG. 1 are 0 ° and 90 °, respectively. In this case, the width of the outer peripheral surface of the anvil 12 that contacts the woven fabric 2 is about 0.5 mm to 1 mm.
mm, and the end 12a of this surface on the side of the ear 3 is located substantially at the center of the lower end surface of the horn 6. Also in this embodiment, the same effect as the above-mentioned embodiment can be obtained.

In each of the above embodiments, the angles α and β of the outer peripheral surfaces of the anvils 9 and 12 are adjusted, and the output of the ultrasonic vibration device 5 is adjusted to correspond to the type and thickness of the woven fabric 2. Each of the above performances can be further improved.

Further, in the above embodiment, the angles α of the outer peripheral surfaces of the anvils 9 and 12,
Although the description has been made of the case where β is different for the left and right, the present invention is not limited to this, and as shown in FIG. 4, it is also possible to use the symmetrical anvil 13 by inclining the mounting member 10. The point is that the angles formed by the woven cloth on the side of the discarded ears and the side of the anti-discarded ears should be different.

[Effect of device]

As described above, according to the present invention, the angle formed by the woven fabric of the outer peripheral slope is made different between the throw-away side and the anti- throw away side with respect to the anvil provided in the selvage treatment device of the loom. Therefore, both the cutting performance and the melt-fixing performance of the selvage can be satisfied without excess and deficiency, and moreover, it is possible to easily cope with the change in the kind and thickness of the woven cloth.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention, FIG. 2 is a partial front view showing another embodiment of the present invention, FIG. 3 is a plan view showing a state of ear treatment, and FIG. FIG. 5 is a front view showing another embodiment of the present invention, FIG. 5 is a front view of a main part of a conventional ear treatment device, and FIG. 6 is an explanatory view showing the shape of the anvil. 1 ... Processing device 2 ... Woven fabric 3 ... Ear 5 ... Ultrasonic vibration device (high-frequency micro-vibration device) 6 ... Horn 7,9,12 ... Anvil

Claims (1)

[Scope of utility model registration request] 1. A woven fabric on a loom, comprising a horn arranged at an ear portion of the woven fabric and oscillating high frequency micro-vibration, and an anvil provided so as to face the horn. A device for cutting and melting and fixing the selvage in the loom, wherein the anvil has a different angle with respect to the woven cloth with respect to the throw-away side and the anti- throw away side.