JPH0813284A - Yarn-winding apparatus - Google Patents

Abstract

PURPOSE:To provide a yarn-winding apparatus capable of automatically winding a weft on a delivery pulley. CONSTITUTION:This yarn-winding apparatus 1 is provided with a belt 15 placed outside of a yarn delivery pulley 7 and driven by a driving pulley 13, a fixed cam member 29 supported on the belt 15 in an integrally rotatable state, a mobile cam member 31 having gear teeth 22 on the circumference and rotatably supported by the fixed cam member 29, a mobile shaft 32 slidably supported by the fixed cam member 29 and the mobile cam member 31, having a yarn extraction member 3A attached to one end through a yarn guiding member 19 and contacting the other end of the shaft with the mobile cam member, a cam part 34 formed between the fixed cam member 29 and the mobile cam member 31 and allowing the slide of the rotating mobile shaft 32 on the mobile cam member 31, a yarn winding shifting mechanism placed between the mobile shaft 32 and the fixed cam member 29 and having a spring member 33 to force the mobile shaft to return to the initial position, and a rack member 18 engaging with the gear 22 at a prescribed position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for winding a weft on a delivery pulley in a weft delivery device.

[0002]

2. Description of the Related Art Conventionally, there are a water jet type and an air jet type in a fluid jet type loom, in which the upper thread and the lower thread of a warp yarn are alternately replaced by a heald frame, and the upper thread and the lower thread are While forming an opening by folding back the opening, the weft is sent to the opening by a fluid consisting of an air flow or a water flow of a weft sending device, and the weft is driven by a reed to weave the cloth. One or a plurality of wefts sent out by a fluid is arranged between a yarn feeder containing the wefts and a main nozzle, wound around a pulley having a groove on its peripheral surface, and then introduced into the main nozzle. The operation of cutting the weft and winding it around the pulley at the time of setting is performed manually by the operator of the apparatus each time.

[0003]

In such a weft feeding device, the weft cutting operation and the winding operation around the pulley at the time of setting are manually performed each time, so that it is troublesome and the work efficiency is not good. There is a problem. Further, in order to automate the device, automatic winding of wefts is desired.

[0004]

In view of the above, according to the invention of claim 1, a belt which is arranged outside the yarn feeding member and is rotationally driven by a drive pulley, and a fixed member which is rotatably supported integrally with the belt. A cam member, a movable cam member that is rotatably supported by the fixed cam member, and has a gear formed on its peripheral surface, a slidably supported member by the fixed cam member and the movable cam member, and a thread guide member at one end. The thread through is locked,
A movable shaft having the other end in contact with the movable cam member, a cam portion formed between the fixed cam member and the movable cam member, and sliding the movable shaft when the movable cam member rotates,
A thread winding member that is interposed between the movable shaft and the fixed cam member and has a spring member that gives the movable shaft a habit of returning to the initial position, and a rack that meshes with the gear at a predetermined position. . According to a second aspect of the present invention, the cam portion is formed in a cam profile that allows the movable shaft to slide in a stepwise manner, a plurality of yarn guide members are arranged in parallel in the sliding direction of the movable shaft, and the yarn delivery member is provided with the above-mentioned. A plurality of circumferential grooves facing the yarn guide member are formed, and the rack member is provided on the upstream side in the rotational direction of the belt with respect to the installation site of the yarn guide member.

[0005]

According to the first aspect of the invention, when the belt is driven to rotate by the drive pulley, the thread winding member rotates in the same direction, and the thread locked at one end of the movable shaft through the thread guide member is removed. It is wound around a yarn delivery member located inside the belt. When the thread winding member rotates and the gear of the movable cam member meshes with the rack, the movable cam member rotates with respect to the fixed cam member, and the movable shaft is slid by the action of the cam portion provided therebetween. It When the movable shaft slides to a certain range, it is slid back toward the initial position by the spring force of the spring member. According to the second aspect of the present invention, the belt rotates so that the tooth portion of the moving cam member and the rack member are rotated in the rotational direction of the belt rather than the position where the thread guide member is arranged in parallel in the sliding direction of the movable shaft. The movable shaft is slid stepwise by the cam flow feel of the cam portion every time it meshes on the upstream side, and the yarn locked on the movable shaft is spirally wound between the yarn guide member and the yarn sending member. Can be hung.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 3, reference numeral 1 indicates a yarn winding device mounted on the weft yarn delivering device 2. The weft feeding device 2 serves as a yarn feeding member around which the weft yarn 3 is wound by the yarn winding device 1 between the main nozzle 6 and the tensioner 5 which gives tension to the weft yarn 3 which is accommodated in the bobbin 4 and supplied. The feed pulley 7 is arranged. The feed pulley 7 is
Here, the weft 3 is rotated clockwise by the drive motor 12 that is driven when the weft is fed, and the wound weft 3 is fed to the side of the main nozzle 6 arranged on the right side in the drawing, which is the weft feeding direction. On the peripheral surface of the feed pulley 7, two annular V grooves 7a,
7b is formed in the axial direction (see FIG. 2).
On the right side of the main nozzle 6, there is formed a woven portion 10 which is formed by alternately replacing the upper thread and the lower thread of the warp 8 by a heald frame (not shown) and weaving the opening 9 to form the woven section 10. The weft yarn 3 sent from the main nozzle 6 is driven into the opening 9 by the reed 11 thus woven, and the cloth is woven.

As shown in FIG. 2, the yarn winding device 1 is provided axially displaced with respect to the feed pulley 7 between the tensioner 5 and the main nozzle 6. As shown in FIGS. 1 and 2, the yarn winding device 1 includes an endless belt 15 wound around a drive pulley 13 and a driven pulley 14, and a yarn winding member 1 supported integrally rotatably on the belt 15.
6, a rack 18 provided on the base plate 17, a yarn guide 19 as a yarn guide member that regulates the position of the weft yarn 3, and a gripper that intermittently holds and releases the weft yarn 3 wound around the yarn guide 19 and the feed pulley 7. 20 and 20 are provided.

The drive pulley 13 has a diameter larger than that of the feed pulley 7 and is rotatably supported by a shaft 21 provided under the base plate 17, and a gear 22 is formed on the outer peripheral surface thereof. A drive gear 24 provided on a drive shaft 23a of a drive motor 23 fixed to the base plate 17 meshes with the gear 22, and drives the drive pulley 13 to rotate clockwise in FIG. The gear 22 has a diameter larger than that of the drive gear 24, and reduces the rotation of the drive gear 24. The driven pulley 14 is rotatably supported by a shaft 25 supported by a base plate 17 located above the yarn guide 19. Therefore, the belt 15 hung between the driven pulley 14 and the drive pulley 13 is arranged outside the yarn guide 19 and the feed pulley 7. As shown in FIG. 2, an L-shaped support plate 27 is provided on a partial surface of the belt 15 via a U-shaped support base 26 with screws 28.
It is fixed at. A fixed cam member 29 forming the thread winding member 16 is fastened and fixed to the support plate 27.

The thread winding member 16 is a fixed cam member 2
9, a movable cam member 31 rotatably supported by the fixed cam member 29, a movable shaft 32 slidably supported by the fixed cam member 29 and the movable cam member 31, and a movable shaft 32 and the fixed cam member 29. A coil spring 33 as a spring member and a cam portion 34 formed between the fixed cam member 29 and the movable cam member 31 are mainly arranged. The fixed cam member 29 is a tubular member, and a sleeve 29a formed on one side of the fixed cam member 29 projects from the support plate 27 toward the feed pulley 7 side. A guide pin 35 is fixed to the sleeve 29a toward the inside thereof. Sleeve 2
On the other side of the fixed cam member located opposite to 9a, the cam 2
9b is provided. The cam 29b is formed by cutting the peripheral surface of the fixed cam 29 member so as to have three step portions indicated by reference numerals and in FIG. The movable cam member 31 is
The fixed cam member 29, which remains uncut, is rotatably supported by being covered on the peripheral surface thereof, and a portion facing the cam 29b is formed as a cam 31b corresponding to the cam. A ring gear 30 as a gear that meshes with the rack 18 when the thread winding member 16 is rotationally moved is formed on the peripheral end portion 31a of the movable cam member located on the opposite side of the cam 31b. The movable cam member 31 is also rotatable with respect to the movable shaft 32. The movable shaft 32 includes a fixed cam member 29 and a movable cam member 3.
1 and has a flat portion 32b at one end 32a thereof. A leaf spring 36 is fixed to the flat portion 32b at one end thereof so as to be openable and closable, and constitutes a locking portion of the weft yarn tip 3a. A pin 35 is provided at the approximate center of the movable shaft 32.
A guide groove 37 that engages with is formed to extend in the axial direction, and engages with the pin 35 to prevent the movable shaft 32 from rotating. The length of the guide groove 37 is set longer than the sliding range of the movable shaft 32 so as not to prevent the coaxial movement. A ring-shaped spring hook portion 38 is provided on the shaft located between the guide groove 37 and the one end 32a. The other end 33b of the coil spring 33, whose one end 33a is locked to the outer circumference of the sleeve 29a of the fixed cam member, is locked to this spring hook 38, and the habit of returning to the initial direction shown by the arrow A on the movable shaft 32. Is giving.

The rack 18 is arranged on the base plate 17 located upstream of the yarn guide 19 in the rotational direction of the belt 15, and is adapted to mesh with the ring gear 30 before the belt 15 makes one rotation. . Yarn guide 19
Is fixed to the bracket 39 between the drive pulley 13 and the driven pulley 14, as shown in FIG. Three yarn guides 19 are arranged side by side in the axial direction so as to face the feed pulley 7. The bracket 39 is
It is fixed to a plate 40 fixed to the base plate 17 via a bracket 41 that supports the gripper 20. The gripper 20 is fixed to the bracket 41 and arranged between the yarn guide 19 and the feed roller 7. The gripper 20 opens and closes the disc 20C provided on the movable rod 20B of the electromagnetic solenoid 20A with respect to the disc 20D fixed to the bracket 41, and normally, the spring 42 locked to the movable rod 20B and the plate 40. And arrow C
It is urged in the closing direction indicated by. The gripper 20 is adapted to open the disk 20C to the open position shown in the drawing when a drive signal is applied to the electromagnetic solenoid 20A.

As shown in FIG. 1, a pair of guide pins 43 are arranged between the gripper 20 and the feed pulley 7. The guide pin 43 displaces the weft thread 3 wound around the yarn guide 19 and the feed pulley 7 between a position indicated by a chain double-dashed line and a position retracted by a solid line. As shown in FIG. 9, the guide pins 43 are fixed to the free ends 44a of a pair of levers 44 rotatably provided on the lower left and right sides of the gripper 20, respectively. The movable piece 45 of the solenoid 45 is connected to the base end 44b of the lever 44, and when the yarn winding device 1 is operating, it occupies the retracted position shown by the solid line, and when the weft feeding device 2 is in the operating state, It is rotated by the solenoid 45 to the entry position shown by the dotted line.

Here, the profiles of the cam 29b and the cam 31b will be described. The cam portion 34 is for sliding the movable shaft 32 in steps, and as shown in FIG. 6, a step portion formed continuously with the cam 29b, and a step portion formed with the cam 31b. ,,, and a stepped portion that matches with, ',', and skein structure, and both are normally placed in a matched state. Each step can move only one step when the belt 15 makes one rotation and the rack 18 and the ring gear 30 mesh with each other, and the movable shaft 32 moves when the belt 15 makes two rotations.
Is slidably guided toward the initial position.
Specifically, the stepped portions are formed to have the same width L, and when the stepped portion 'is engaged with the stepped portion, the movable shaft 32 is displaced in the direction of the arrow B, and the stepped portion is moved to the stepped portion. When'is engaged, it has a profile that displaces the movable shaft 32 in the direction of arrow A. The gear ratio between the rack 15 and the ring gear 30 is set to 1: 2.

The operation of the yarn winding device 1 thus constructed will be described. First, the weft thread 3 from the bobbin 4 through the tensioner 5 is moved to the yarn guide 19 on the left side in FIG.
The tip 3a is passed through a, and the tip 3a is locked to the leaf spring 36 of the tip 32a of the movable shaft 32. Next, a start switch (not shown) is turned on to activate the drive motor 23 to drive the gear 22 and rotate the belt 15 wound around the drive pulley 13 and the driven pulley 14 clockwise in FIG. Then, the yarn winding member 16 rotates integrally with the belt 15 and moves on the outer peripheral side of the feed pulley 7, and the weft yarn 3 is wound around the V groove 7a of the feed pulley. When the rotation of the belt 15 advances and the rack 18 positioned in front of the yarn guide 19 meshes with the ring gear 30, the ring gear 30 rotates 1/2. When the ring gear 30 rotates, the movable cam member 3
As shown in FIG. 7, the stepped portion 1'overrides the stepped portion 1 and the movable shaft 32 resists the spring force of the coil spring 33 and is shown by a solid line from the initial position shown by the two-dot chain line in FIG. Slide to the first displacement position. Due to this sliding displacement of the movable shaft 32, the position of the weft 3 is displaced in the direction of arrow B.

When the yarn winding member 16 passes through the rack 18 and the yarn guide 19 and starts the second rotation, the movable shaft 3
2, the weft yarn 3 displaced by the first sliding displacement is passed through the yarn guide 19b at the center in FIG. 2, and is wound around the V groove 7b of the feed pulley as the rotation of the belt 15 progresses.
When the yarn winding member 16 rotates together with the belt 15 and the ring gear 30 and the rack 18 are meshed with each other for the second time, as shown in FIG.
After getting over the step, you will be guided to the step. Due to this displacement of the movable cam member 31, the movable shaft 32 slides from the first displacement position shown by the chain double-dashed line in FIG. 5 to the second displacement position shown by the solid line, and the weft yarn 3 hung on the V groove 7b is indicated by the arrow B. Shift in direction,
After passing through the yarn guide 19c on the right side in FIG. 2, the movable cam member 3 is moved along the step of the fixed cam member 29.
1'stepped portion 'is guided and the movable shaft 32 is moved to the coil spring 33.
It slides in the direction of arrow A due to the habit of returning. When the yarn winding member 16 passes through the yarn guide 19 and enters the third rotation, the switch (not shown) of the drive motor 25 is turned off to stop the rotation of the belt 15 when it is within the range not exceeding the feed pulley 7 in FIG. Threading member 1
Stop moving 6.

Thus, the movable shaft 32 for locking the weft 3
The belt winding member 16 for supporting the movable shaft.
The weft yarn 3 can be automatically and spirally wound around the V grooves 7a and 7b formed on the feed pulley 7 by displacing the weft yarn 5 in a stepwise manner in synchronization with the rotation.

When the drive motor 25 is switched off and the weft feed-out device 2 is set to the operating state, the solenoid 45 is driven and the guide pin 43 placed at the retracted position shown by the solid line in FIG. The weft 3 is displaced to the entry position indicated by the dotted line, and is held by the pin 43 outside the opening / closing area of the gripper 20, the weft 3 is located in the opening / closing area of the gripper 20, and the gripper 20 moves its solenoid 2
The weft yarn 3 is clamped by the gripper 20 after being closed by 0A.

In this embodiment, the gear 22 of the drive pulley 13 is driven by the drive gear 24 of the drive motor 23 to rotationally move the thread winding member 16 fixed to the belt 15. However, the present invention is not limited to this. Instead of the gear 22, for example, a plurality of blades are changed to the gear 22 to form on the outer peripheral end of the drive pulley 13, and the weft feed device 2 is used as a drive source.
The drive pulley 13 may be driven to rotate by spraying the fluid (compressed air) used in (1) on the blades.

[0018]

According to the invention described in claim 1, since the weft yarn can be automatically wound around the outside of the yarn sending member,
It is not necessary to manually cut the weft thread and wind it around the pulley at the time of setting, and it is possible to automate the device, resulting in improved work efficiency.
Further, in the invention according to claim 2, the weft can be wound around the feed member in a spiral shape by displacing the support shaft for locking the weft in stages.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a yarn winding device showing an embodiment of the present invention.

FIG. 2 is a side sectional view of the yarn winding device.

FIG. 3 is a front view showing a schematic configuration of a weft yarn feeding device equipped with a yarn winding device.

FIG. 4 is an enlarged view showing a first operation of the yarn winding device.

FIG. 5 is an enlarged view showing a second operation of the yarn winding device.

FIG. 6 is a development view of a cam portion when a movable shaft is at an initial position.

FIG. 7 is a development view of the cam portion when the movable shaft is at the first displacement position.

FIG. 8 is a development view of the cam portion when the movable shaft is at the second displacement position.

FIG. 9 is an enlarged view showing the configuration and operation of a weft guide pin and its drive mechanism.

[Explanation of symbols]

 1 thread winding device 3 thread (weft) 7 thread sending member (feed pulley) 7a, 7b circumferential groove 13 drive pulley 15 belt 16 thread winding member 17 rack 19 thread guide member (yarn guide) 29 fixed cam member 30 gear (ring) Gear) 31 movable cam member 32 movable shaft 32a one end 32b other end 33 spring member (coil spring) 34 cam portion

Claims (2)

[Claims] 1. A belt, which is disposed outside a yarn delivery member and is rotationally driven by a drive pulley, a fixed cam member rotatably supported by the belt, and a rotatably supported member by the fixed cam member. , A movable cam member having a gear formed on its peripheral surface, and a fixed cam member and a movable cam member slidably supported the yarn through a yarn guide member at one end, and the other end is movable. A movable shaft that contacts the cam member, a cam portion that is formed between the fixed cam member and the movable cam member, and that slides the movable shaft when the movable cam member rotates, the movable shaft and the fixed cam member. A yarn winding device including a yarn winding member that is interposed between the movable shaft and a spring member that gives a habit of returning the movable shaft to an initial position, and a rack that meshes with the gear at a predetermined position. 2. A cam profile is formed in a cam profile for sliding the movable shaft stepwise, a plurality of thread guide members are arranged in parallel in the sliding direction of the movable shaft, and a plurality of circumferences facing the thread guide member. 2. The yarn winding device according to claim 1, wherein the groove is formed in the yarn feeding member, and the rack member is provided on the upstream side in the rotational direction of the belt with respect to the arrangement portion of the yarn guiding member.