JP2545229Y2 - Warp cut detection device in loom - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application field] The present invention relates to a dropper of a warp cut detecting device in a loom.

[Prior Art] When a warp is cut during weaving, it is necessary to detect the cut and stop the machine immediately. As a method, a dropper made of a conductor is supported for each warp, and a dropper bar containing a switch of an electric circuit is inserted into the dropper in a loose fit state, and the dropper falls on the dropper bar by warp cutting. It is known that a machine base is stopped by operating a switch of the electric circuit.

However, since all droppers have been uniform and have the same color, it has been very complicated to find a dropper from many droppers, and it is time consuming to find a cut portion of a warp. Was. Therefore, a device that quickly detects a dropped dropper is available
No. 420, JP-A-60-81355, and JP-A-62-20
No. 6062 discloses this.

The apparatus disclosed in Japanese Utility Model Publication No. Sho 60-21420 moves the dropper bar corresponding to the dropped dropper from side to side, so that the dropper that has lost the warp support swings left and right more than other droppers supported by the warp. The dropper is detected because the size is large, and the warp cutting point is washed out.

The device disclosed in Japanese Patent Application Laid-Open No. Sho 60-81355 displays a predetermined width including a warp cutting device on a display device, and finds a warp cutting portion by searching within the width.

The apparatus disclosed in Japanese Patent Application Laid-Open No. 62-206062 is provided with a photoelectric sensor, detects a dropped dropper by a detecting device movable in a weaving width direction, and drops the dropped dropper by turning on a light of a position determining device. The position of the dropper is displayed, or the dropped dropper is protruded above other droppers due to the grip, and the distance between the dropped dropper and other droppers is increased, so that the dropped dropper can be distinguished from other droppers. .

[Problems to be Solved by the Invention] However, as described above, since the droppers in the conventional device are all of a uniform color, and each dropper is of the same color, in the device disclosed in Japanese Utility Model Publication No. 60-20420, the dropper is selected from among many It is very troublesome to find a dropper to perform from only its movement amount.

In the apparatus disclosed in Japanese Patent Application Laid-Open No. Sho 60-81355, the warp yarn is usually of a high density, although only within the predetermined width, and the number of droppers is considerably large even within the predetermined width. In order to find a fallen object from among them, a considerable amount of time is wasted, and the operation efficiency is reduced. Further, when the predetermined width is reduced, a display device corresponding thereto is required, which not only complicates the control circuit and the like but also inevitably increases the cost.

Although the device disclosed in Japanese Patent Application Laid-Open No. 62-206062 improves the accuracy of detecting the warp cutting position, such a device is not only complicated in its control but also quite expensive. Further, as in the above-described apparatus, the detection of the warp cutting position is inevitably a complicated operation in that a dropper of a uniform color is searched for from a large number of droppers of the same color.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a warp cut detecting device capable of searching for a dropper easily dropped out of many droppers and quickly detecting a warp cut position.

[Means for Solving the Problems] Therefore, in the present invention, a plurality of droppers supported for each warp and aligned in the width direction of the warp row are provided, and when the warp is cut, the dropper corresponding to the cut warp drops. In the warp cut detection device in the loom that detects and stops the machine base, for each dropper, the tip of the dropper and the lower end of the dropper adjacent to the tip of the dropper dropped by the warp cut. The colors are different.

[Operation] Since each dropper has a different color at its tip and lower end, if one of the droppers falls due to warp cutting, the tip of the dropped dropper is placed in a normal state around the dropper. Since the color relationship is different from that of the dropper, the dropped dropper can be easily found.

Embodiment An embodiment of the present invention will be described with reference to FIGS. The sheet-like warp T sent from the warp beam 1 passes through the back roller 2 and the tension roller 3 to reach the warp cut detecting device 5, and the dropper 6 is provided for each warp T.
I support. Thereafter, the opening start point of the warp T is regulated in the width direction by a pair of warp press bars 8 arranged on the upper and lower sides of the warp T, and a shed is formed by the heald 4 moving up and down. Then, a weft yarn is inserted into the shed from a weft insertion device (not shown) and beaten by the reed 12 to form a woven fabric W.

The warp cut detecting device 5 includes the conductive dropper 6.
And a dropper bar 7. The dropper 6 has a slot 6a into which the dropper bar 7 is inserted.
And a through hole 6b through which one warp T is passed below the long hole 6a, and the long hole 6a is provided with a conductor 7a (described later) of the dropper bar 7 when the dropper 6 is supported by the warp T. Is formed in a sufficient size so as not to contact with. The tip 6c of the dropper 6 is coated with white paint near the upper end of the long hole 6a, and black paint is applied to the peripheral portion 6d of the dropper 6 from the lower portion of the white paint to near the lower end of the long hole 6a. It has been subjected. That is, the tip painted white
As shown in FIGS. 3 and 4, when the dropper that has undergone warp cutting falls, the adjacent dropper corresponding to the white-painted tip 6c is located as shown in FIGS. The color is arranged so that the position of is the lower part 6d painted black. In this embodiment, the long hole
The area around 6a is not painted so as not to lose its conductivity. A large number of droppers 6 spanning the warp T in the width direction
The dropper bar 7, which is inserted in a loosely fitted state, is composed of a conductor 7a, a resistor 7c, and an insulator 7b interposed therebetween. One end of the conductor 7a is connected to the loom control device 14 and the warp cutting position display circuit 13, while the resistor 7b
Constitutes a closed circuit with the DC power supply 9 and is connected to the warp cutting position indicating circuit 13; normally, the conductor 7a and the resistor 7c are not electrically connected to each other but via the dropper 6 'dropped by the warp cutting. It is to be connected.

A display device 11 comprising a plurality of equally spaced LEDs α _i (i = 1 to 6) for displaying a warp cut detection position is provided above the warp press bar 8, and the display device 11 is provided with the warp cut. A predetermined LED α _i based on a signal from the position display circuit 13
Is lit, and the warp cut point is displayed in a predetermined width unit.

The operation of the present embodiment configured as described above will be described. During machine operation, many droppers 6 supported for each warp are all at the same height, and the white paint near the tip 6c of the dropper 6 and the black paint on the lower part 6d are aligned in the width direction of the warp T. It is in a state where it has

When the warp T 'is cut, the dropper 6' corresponding to the warp T 'loses its support and falls onto the dropper bar 7. As a result, the conductor 7a and the resistor 7c are electrically connected via the dropper 6 ', and a voltage signal corresponding to the position of the dropped dropper 6' is input to the loom control device 14 to stop the machine base. On the other hand, the voltage signal is input to the warp cutting position display circuit 13, and the two LEDs α ₂ and α ₃ of the display device 11 are turned on by the output signal from the display circuit 13 to indicate the width including the warp cutting position. For details of the circuit configuration and the like of the warp cutting position display circuit 13 and the display device 11, a known technique disclosed in JP-A-60-81355 may be used.

Dropper 6 within the width displayed by the display device 11
The white line at the tip 6c of the dropper 6 and the black at the lower edge 6d of the dropper 6 are lined up neatly, and one of the lines is cut off by the dropper 6 'and white enters the black. Has become. Since white and black are different colors, the operator can very easily find the dropped dropper 6, that is, the cut portion of the warp T is recognized. Thereafter, the cut warp is connected to the woven fabric side, and the operation of the machine stand is restarted. As described above, the quicker the warp cut point is found, the shorter the time spent for connecting the cut warp to the woven fabric and restarting the operation of the loom stand, and the higher the operating efficiency of the loom.

In the above embodiment, the tip 6c of the dropper 6 is painted white and the lower peripheral edge 6d is painted black. However, contrast may be provided by other colors. May be set to a color corresponding to the contrast.

The present invention is, of course, not limited to the above embodiment, and the dropper bar 7 corresponding to the dropped dropper 6 can be used.
May be moved from side to side to detect the warp cutting position based on the difference in the amount of movement between the dropper 6 ′ and the other dropper 6 that has fallen and lost the support of the warp. In this case, the dropper 6 and the dropper 6 ′ The corresponding dropper 6 'can be found very easily from the division of the arrangement of the contrast colors in accordance with the difference in the amount of movement from the above, and the time spent for the operation of detecting the warp cutting position can be reduced.

[Effects of the Invention] As described in detail above, in the present invention, the dropper dropped by warp cutting has a periphery adjacent to the tip end of each dropper because the tip end portion and the lower portion have different colors. The color of the dropper is different from that of other droppers, making it easy to find the position of the dropper even when viewed from the top of the machine, reducing the time required to restart the loom, including the subsequent warp splicing work. Thus, the operating efficiency of the loom can be improved.

[Brief description of the drawings]

Fig. 1 is a side view of a loom embodying the present invention, Fig. 2 is a schematic view showing an embodiment of the present invention, Fig. 3 is a side view showing a main part of the present invention, and Fig. 4 is a present invention. It is a front view which shows the principal part of. Warp cut detection device 5, dropper 6, dropper bar 7.

Claims (1)

(57) [Scope of request for utility model registration] 1. A plurality of droppers supported for each warp and aligned in the width direction of a warp row, and when a warp is cut, a drop of the dropper corresponding to the cut warp is detected to stop the machine base. In the warp cut detection device of the loom, for each dropper, the tip of the dropper,
A warp cut detecting device for a loom, characterized in that the lower end of the dropper adjacent to the tip of the dropper dropped by warp cutting is colored in different colors.