JPS58501136A - Weft measuring device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Weft measuring device The present invention is used in a fluid jet type loom to move the warp yarns in each weaving cycle of the loom. The present invention relates to a measuring device that measures the amount of weft yarn that is fed so as to be cut.

The weft thread measuring device winds the weft thread onto a fixed spool and a storage area of this spool. a weft supply arm for transporting the weft from said storage area and at the same time transporting said weft from said storage area; a thread guide arm for winding onto the discharge area of the spool; and a thread guide arm for winding onto the discharge area of the spool; After winding a predetermined amount of thread onto the discharge area in cooperation with the stopping means for pulling the thread axially from the spool.

The invention will now be described with reference to a number of embodiments and with reference to the accompanying drawings, in which: FIG.

FIG. 1 of the accompanying drawings shows a schematic perspective view of a part of the device according to the invention; FIG. 2 is a detailed axial cross-sectional view of the device according to the invention installed in a part of a loom; FIG. 3 is a cross-sectional view taken along the line ■-m in FIG.

First, in FIG. 1, a device 10 according to the invention includes a fixed spool 1 having a substantially cylindrical shape. 2 and a thread extending radially from the shaft of this spool and rotatably attached to this shaft. supply arm 14. The arm 14 is hollow and carries the thread 16 onto the spool. It is connected to a crank so that it can be wound around the winding.This point will be explained in detail later. Ru. This measuring device further includes a thread copying arm 17, and this arm 17. Appropriate Special Table Sho 58-501136 (2) for Mu 14 They are arranged diametrically opposite each other and are integrally rotatable.

The guide arm 17 picks up the yarn wound and piled up by the arm 14 and spools this yarn. Wind it again onto the spool at a position further along the . Moreover, the weft measuring device of the present invention , including a line stop finger 20 which prevents the line from leaving the spool 12. Then, the guide arm 17 starts winding the thread onto the spool.

As shown in FIG. 1, the device 10 is arranged to feed yarn to an air jet nozzle 22. This nozzle 22 feeds the yarn in a direction across the flag yarn from the weave* (not shown). Let it run. As previously mentioned, the thread 16 is placed in two different locations on the spool 12. It is wound around the lever spool. The two locations 24, 25 are each provided by a raised portion 26. The locations 24 and 25 are therefore physically separate. At location 24 Before operating the device, the thread is wound around the spool 12, the number of turns being The minimum number required to form 28 supply coils may be sufficient. Therefore, location 24 is form the storage area for the rolls. The supply coil of thread 28 basically has two main functions: In other words, the arm 14 has a function of supplying yarn to the yarn guide arm 17 and a function of supplying the yarn to the yarn guide arm 17. 1 to prevent the thread from slipping on the spool 12 when drawing the thread from the cage (not shown). It has the function of

During each weaving cycle of the loom, arms 14 and 17 rotate continuously. As the arm rotates, the arm 14 winds the supplied thread onto the spool, which thread is further It is picked up by arm 17 and turned clockwise again onto the spool. Therefore, arm 1 The winding speed 41 of the supply coil 28 is equal to the unwinding speed of the guide arm 17. The dimensions of will be constant. When winding the thread onto the spool 12 by the guide arm 17, The stop finger 2o moves axially along said spool and stops the arms 14 and 1. Leave from 7. During the weaving cycle at a predetermined time after the warp has been fed, the fingers 2o moved radially and left the spool, and was wound by arm 17. The thread leaves this via a jet nozzle 22 via a location 25 which defines the discharge area of the spool. It is pulled from the spool.

The stop fingers 20 are simultaneously retracted axially relative to the arms 14 and 17, and then and move the arm 17 radially inward to open the winding of the thread on the spool. Let it begin. Repeat this cycle.

In the supply coil 28, the fixed length of thread wound on the spool is basically is based on two changes: the number of rotations of the arm 17 in each cycle and the speed of the sprocket. is the diameter of the wheel.

This rotation speed is controlled by appropriately selecting the gear ratio on the drive shaft of the main loom. and this spool is preferably constructed such that its diameter is adjustable. stomach. Therefore, the amount of thread stored on the spool can be adjusted accurately and easily. Wear.

In addition, the stop finger is moved radially inward and is wound by the guide arm 17. By adjusting the timing when catching the thread that has separated from the spool, Capture and shift is possible in two independent configurations. Therefore, adjust the stop finger - If all the threads are moved radially inward before they are released from the spool, , the stop finger 20 itself will capture the thread. Also, adjust finger 20 Then all the thread wound on the spool by arm 17 is pulled from the spool. If moved radially inward after being made, the thread will be captured by arm 17. .

The point is that under given conditions, this second form of capture does not cause the yarn to stop abruptly. It can be said that it is suitable for In contrast, in the first form of yarn capture, the yarn is rapidly make it stop. Thus, when the thread is first stopped by arm 17, arm 17 The rotation unwinds the yarn from the supply coil 28, and this yarn is pulled from the arm 17 by the air jet nostle 22 at a speed determined by the It will be done. As a result, the arm passes through the stop finger 20 and the thread then passes through the stop finger 20. The thread is completely captured by the spool, and the thread is wound onto the spool by the continuous movement of the naam 17. let As mentioned above, the second catching form captures the thread that has been pulled off the spool. It involves two different stages. Rotational position of arm 17 relative to stop finger 20 and/or the timing at which the fingers 20 move radially inward. By appropriately adjusting the It becomes possible to adjust the length of the measured thread.

A specific embodiment of the invention will now be described with reference to FIGS. 2 and 3. Furthermore, this In these figures, parts corresponding to similar parts in Figure 1 have the same reference numerals. It will be displayed accordingly.

In FIG. 2, the spool 2 is made up of individual segments 30 and is Only a portion of the combination is shown. These segments 3-0 are radially movable be configured to vary the effective diameter of spool 12.

The annular boss 34 surrounds a bearing 37, which rotates around a shaft 40. Arms 4 and 17 are rotatably supported and protrude in the radial direction from a shaft 40. Ma In addition, this annular boss 34 has a number of magnetic bodies 44 arranged at intervals on its circumference. 7, and these magnetic bodies are magnetic bodies supported within the fixed support 46 of the device 10. 45 and 1θJ. The Vl-isomer 44.45 is attracted to 1-i, and the cyclic phos 34 Therefore, the spool 12 remains stationary even when the shaft 40 rotates. Moreover, the shaft 40 is A bearing 50 disposed within the support body 46 is supported. The shaft 40 has a center hole, 10a. 20) The central shaft is connected to the inner hole 142 of the arm]4 to form a passage for the thread]6. Ru. By providing an air duct 53 to supply compressed air to the center hole 40a, the yarn 16 runs through hole +4.2.40a. The shaft 40 has a Binion Kia lI f This Binion Kia is a kia that is supported on the loom's drive shaft 56. It meshes with 55.

The stop finger 20 is mounted on the support +A60. This support member 60 The pin 1' is pivotally mounted on the pin 6]. The spindle 61 is attached to a support member 62, This support member 62 is then pivotally attached to the spindle f]3J-. These spaces Pindle 61 and-! :63 is perpendicular to each other 1) :i positional relationship, so the fingers 20, it is possible to move in the axial direction by 1 in the cos spool, and furthermore, this spool has a phantom- 7 Stop finger 2 () that can move inward or outward in the direction of 2. Let's move on the ground, - the power of silk J267! ukena:8')re , this cam is attached to the supporting member 50 and -411's cam fluoro et al. The cooperating 5° cam 67 is formed as follows. That is, at the two peripheries Each cam has the same profile, which allows the fingers to be radially inward or radially Z-support by moving outward in the direction and in other cases by having different contours The fingers 20 are spun by pivoting the member 60 around the spindle 63. axially along the finger, and move the finger radially innermost or halfway. It is held in the outermost radial position.

As shown in FIG. It abuts against the 20 end. The purpose of this inclined box 26a is to allow the arm 17 to The thread wound on the pool 12 moves in the axial direction as follows: The aim is to prevent the threads from overlapping each other during winding by means of a mechanism that promotes this. Fi The axial movement speed of the thread 16 along the spool is the same as the axial movement speed of the thread 16 along the spool. It is set to a certain degree. A similar ramp 122 is provided at location 24 to connect arm 14 and IAl. , to work.

5 international search report

Claims (1)

[Claims] 11) A fixed spool and a thread supply assembly for winding the thread onto the storage area of the spool. The yarn is transferred from the storage area and simultaneously transferred to the spool discharge area. A thread guide arm is used to wind the thread onto the spool, and the discharge area of this spool cooperates with the thread guide arm to wind the thread onto the After the thread is wound on the discharge area, the thread wound on this discharge area is removed from the spool. An optical measurement device consisting of a stopping device that pulls in the direction. (2. In the optical measurement device according to claim 1, the stop device is wrapped relative to the spool between a first position and a second position to respectively capture or release the thread. An optical measuring device comprising a finger movable in the radial direction. (3) In the optical measuring device according to claim 2, the finger is placed in the second position. Optical measurement arranged to move from the first position to the first position to pull all threads from the discharge area Device. (4) In the optical measuring device according to claim 2, the finger is moved to the second position. The device shall be such that all threads are pulled out of the discharge area before being moved to the first position. Optical measurement device. (5) In the optical measurement device according to any of the claims, the storage area An optical measuring device consisting of an annular ridge separating the area and the discharge area. (6) In the optical measuring device according to claim 5, the raised portion is formed on the spool. It has an inclined surface extending toward the discharge end, and the yarn wound on this inclined surface is attached to the spout. consisting of being urged to move axially along the wall towards its discharge end. Optical measurement device. (7) In the optical measuring device according to any of the above claims, The arm and the thread guide arm face each other on the diameter line and share a common axis so that they rotate together. Optical measurement device consisting of being mounted on top. (8) In the optical measuring device according to claim 7, the common axis is inside the housing. The spool is rotatably mounted on the shaft, and the spool rotatably supports the shaft. Uzing is an optical meter consisting of cooperating magnetic poles to restrain the rotation of the spool. Measuring equipment. (9) In the optical measurement device according to any of the above claims, the spool is Consisting of multiple segments, these segments can be configured to be movable in a radial direction. Optical measuring device consisting of adjusting the diameter of the spool.