JPH0571042A - Yarn feeder for loom - Google Patents

Abstract

PURPOSE:To improve yarn feed operating efficiency by delivering a weft yarn tip in its state preinserted into a hollow core of a yarn feed unit installed in a stand member in a yarn feed station through an air stream to a downstream device. CONSTITUTION:Yarn is fed in an air jet loom. In the process, each yarn feed unit (P) conveyed through a robot, installed in a stand member (S) located in a feed part of a yarn feed station and kept in a state of its weft yarn tip preinserted into a paper tube is moved to the yarn feed part by rotation of a chain 66. An air nozzle 96 is subsequently operated to push out the weft yarn tip in the above-mentioned paper tube to the outside by an air stream of the nozzle. The weft yarn tip is then delivered to a weft yarn receiving unit 99 installed connectedly to the tip of a nozzle 43 for threading the weft yarn, guided to the interior of the nozzle 43 and subsequently introduced into a downstream device. Thereby, new yarn feed is carried out without performing operation to tie the terminal end of the preceding weft yarn to the tip of the succeeding weft yarn.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a yarn feeding device for drawing a weft yarn from a yarn feeding body and feeding the yarn to a downstream side device of the yarn feeding body in a loom.

[0002]

2. Description of the Related Art As a conventional yarn feeding device of this type, there is one shown in Japanese Patent Application Laid-Open No. 1-256468. The configuration of this device will be described with reference to FIG. 17. A weft package stock area 4 is provided separately from the loom area 1 in which a plurality of looms 2 are installed, and as shown in FIG. The yarn supplying body P is placed and stored on the conveyor 5 in the stock area 4 in a state of being inserted into the T. Rail 6 laid between the stock area 4 and the loom area 1
The yarn feeder exchange robot 7 runs along the line. The robot 7 receives the yarn supplying body P from the yarn supplying body supplying station 9 in the stock area 4, conveys the yarn supplying body P to the weft supplying station 8 of each loom 2, and finishes the supplying of the wefts to form an empty bobbin having no yarn layer. It is transported from the station 8 to the empty bobbin collecting station 10 on the stock area 4 side.

The yarn feeders P stocked in the stock area 4 are attached to the tray T on the conveyor 5 as shown in FIG. That is, the yarn feeding body P placed at a certain position where the yarn ends of the inner layer and the outer layer are inserted is attached to the peg 14 of the tray T, and the yarn ends Y1 and Y2 of the inner layer and the outer layer are fed together. The position of the yarn end is positioned at the center of the yarn supplying body P by being inserted and suspended from the upper end into the center hole 13 of the yarn body P or the peg 14.

Here, the procedure for automatically supplying and replacing the yarn supplying body P to the loom is as follows. First, as shown in FIG. 18, the yarn ends Y1, Y of the inner and outer layers of the weft of the yarn feeder P
2 are tied together and inserted into the center hole 13 of the yarn feeder P or the peg 14. Then, the yarn supplying body P is woven by the robot 7 into the loom 2
The weft feeding station 8 of the
The weft yarn in the center hole 13 of the yarn supplying body P or the peg 14 is cut above, and the tip end portion of the weft yarn remaining in the center hole 13 of the yarn supplying body P or the peg 14 is being used by an automatic knotting device. The weft yarn end portion of the body P is tied, while the weft yarn tip portion of the yarn supplying body P in use is tied to the tip portion of another preliminary yarn feeding body P.

[0005]

However, in such a conventional yarn feeder, as described above, in the weft yarn feeding station 8 of the loom 2, the front end portion and the end portion are connected. There is a drawback that the device becomes complicated and large-scaled such that a device for performing complicated work such as once cutting the weft yarn and then tying the leading end portion to the weft yarn end portion of the yarn supplying body P in use is required.

In view of the conventional problems as described above, the present invention eliminates the need for the work of preparing the weft yarn in the hollow core of the yarn feeder by connecting the leading end and the trailing end of the weft, and at the same time, in the loom. At the weft yarn feeding station, workability is improved and the device is improved by eliminating the need for a device for performing complicated work such as cutting the weft yarn once and then tying the weft yarn end portion to the weft yarn end portion of the yarn feeder being used. The present invention provides a yarn feeding device for a loom, which is simplified.

[0007]

Therefore, the yarn feeding device for a loom according to the present invention includes a stand member for supporting a yarn feeding body, in which a weft end portion is previously inserted in a hollow core, at a yarn feeding station of the loom. And a means for pulling out the weft yarn tip end portion in the hollow core of the yarn feeder supported by the stand member by an air flow from the core and delivering it to the downstream side device of the yarn feeder.

[0008]

With this construction, the weft yarn tip portion is inserted into the hollow core of the yarn feeder in advance and supported by the stand member at the yarn feeding station of the loom. Then, on this stand member, the tip portion of the weft yarn in the hollow core is pulled out from the hollow core by an air flow and delivered to a downstream side device, for example, a weft yarn storage length measuring device. Therefore, at the yarn feeding station of the loom, there is no need for a device for performing a complicated work such as once cutting the weft yarn having the leading end portion and the trailing end portion tied together and then joining the leading end portion to the weft end portion of the yarn feeder being used. It is possible to simplify the device and improve workability.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 12 show a first embodiment of the present invention. 1 and 2, a weft yarn storage length measuring device 1 is provided on a support plate 11 of each loom, which is arranged in plural in the loom area.
2 are erected. The length measuring device 12 includes a motor 31
A rotating body 32 that is rotationally driven by a belt 31a
A drum 33 which is rotatably supported by the rotating body 32 and is held in a stationary state; and a locking body 34a which is driven by an electromagnetic actuator 34 so as to enter and withdraw into a hole on the tip side peripheral surface of the drum 33. , A pipe-shaped winding guide 35 that is attached to the rotating body 32, rotates integrally with the rotating body 32, and winds the weft yarn around the drum 33 while guiding the weft yarn.

Motor 31 and electromagnetic actuator 34
Are controlled by a rotation control unit 37 and a locking body control unit 38 provided in the control device 36, respectively, and these control units 3
An arithmetic processing unit 39 is connected to the units 7, 38. An air injection control unit 40 is connected to the arithmetic processing unit 39. The weft unwinding sensor 41 is a photoelectric sensor, which outputs a signal corresponding to the unwinding number of the weft that is rewound around the drum 33 during weft insertion, and this signal is input to the arithmetic processing unit 39.
Further, the crank angle sensor 42 outputs a signal corresponding to the crank angle of the rotating shaft of the main motor of the loom (not shown), and this signal is similarly input to the arithmetic processing unit 39.

A winding guide 3 provided on the rotating body 32.
A weft threading nozzle 43 is provided so as to face the inlet side of the nozzle 5, and a pipe 44 communicating with the inside is attached to the outer circumference of the nozzle 43. And this nozzle 4
The blast air from 3 passes through the pipe of the winding guide 35, and then is jetted from the outlet thereof toward the weft inlet of the base end of the main nozzle 45. Also, the nozzle 4
A weft sensor 46 is provided between the rotating body 32 and the rotating body 32. The sensor 46 outputs a signal corresponding to the presence or absence of the weft 22 passing through the nozzle 43, and this signal is input to the arithmetic processing unit 39. ..

In the drawing, unexplained reference numerals 56 and 57 are air supply pipes, 58 is a weft pulling / removing device, and 59 is a reed. Next, at the weft yarn feeding station 8 of the loom 2 where the yarn feeder is conveyed by a yarn feeder exchange robot, which will be described later, running along a rail laid between the stock area 4 of the yarn feeder and the loom area 1. There is provided a yarn supplying device that draws out the weft from the yarn supplying body and supplies the weft to the above-described weft storage length measuring device which is a downstream side device of the yarn supplying body.

To explain the structure of such a yarn feeder, in FIG. 1, a pair of struts 60 which are parallel to each other and extend in the vertical direction are fixed via anchors 61 on the floor surface on which the loom is supported. There is. In this pillar 60,
A yarn feeder transport device is provided. This carrying device is configured as follows.

That is, a pair of horizontal rails 62 that are parallel to each other and extend in the horizontal direction are fixedly attached to the upper ends of the columns 60 at their longitudinal intermediate portions. Further, a pair of horizontal rails 63 extending in the horizontal direction in parallel with each other are fixedly attached to the lower end portions of the columns 60 at the intermediate portions in the longitudinal direction thereof.
In FIG. 2, on the inner surfaces of the left and right end portions of the horizontal rails 62 on the upper end portion side, the rotation shafts of the sprockets 64 extending vertically from the surfaces and facing each other are rotatably supported.
The sprockets 64 at the left and right ends of the cross rails 62 face each other in parallel with each other. Further, the inner surface of each of the left and right end portions of each of the horizontal rails 63 on the intermediate portion side similarly extends vertically from the surface and opposes each other.
The four rotation shafts are rotatably supported, and each horizontal bar 62,
The sprockets 64 at the left and right ends of 63 are parallel to each other and face each other. Then, a single chain 66 is wound around the four sprocket units 65 formed by the pair of sprockets 64. The chain 66 is formed by connecting a number of chain constituent members 66a, and a roller 66b is interposed at the connecting portion. In this case, the chain 6
6 is wound so as to form a substantially rectangular shape, and the sprocket 64 is located at each of the four corners.

In FIG. 1, one sprocket 64 of the sprocket unit 65 located on the lower left side of the four sprocket units 65 is a chain drive motor 6.
Drive sprocket 64 to which the rotational drive force from 7 is transmitted
a. That is, the upper end side horizontal bar 62 and the intermediate part side horizontal bar 63.
A stay 68 is fixed between the pair of columns 60 between
A plate-like bracket 69, which extends in the horizontal direction in which the horizontal rails 62 and 63 extend, is fixedly attached to the stay 68 in the longitudinal direction. A motor 67 is fixedly attached to the lower surface of the end of the bracket 69 that faces the drive sprocket 64a. Drive shaft 6 of this motor 67
7a extends vertically downward, and a bevel gear 70 is provided at its tip.
Is fixedly attached. A bevel gear 71 that meshes with the bevel gear 70 is fixedly attached to the rotary shaft of the drive sprocket 64a. Therefore, when the bevel gear 70 rotates via the drive shaft 67a by driving the motor 67, the bevel gear 71 rotates and the drive sprocket 64a rotates. As a result, the chain 66 is driven while rotating the other sprockets 64, and each chain 66 is moved.

Four side portions A, B, C and D are formed on the chain 66 wound in a substantially rectangular shape,
Two yarn feeder stand members S that support the yarn feeder P are fixedly attached to each of the side portions A, B, C, and D. As shown in FIGS. 3 and 4, the yarn feeder stand member S is formed by integrally forming a peg 74 on a tray 72 via a shaft portion 73, and the peg 74 gradually increases from the base end to the tip. It is formed in a truncated cone shape with a small diameter. A large-diameter hole 75 is formed in the tray 72 and the shaft 73 of the yarn feeder stand member S along the central axis thereof. A small diameter hole 76 is formed in the peg 74 along the central axis thereof. An air supply member 77 is fitted in the hole 75.
A through hole 78 is formed along the central axis of the air supply member 77, and a circumferential groove 79 having a predetermined width that is continuous in the circumferential direction is formed at an axially intermediate portion of the outer peripheral surface. Therefore, the small-diameter hole 76 formed in the peg 74 and the through hole 78 of the air supply member 77 communicate with each other to form an air circulation hole 80.

The air supply member 77 is provided with four air supply holes 81 which are inclined and penetrate so as to connect the inner peripheral surface and the outer peripheral surface thereof. On the other hand, the shaft portion 73 is provided with an air supply hole 82 penetrating between the outer peripheral surface and the inner peripheral surface thereof. The air supply hole 82 is formed so that the diameter gradually decreases from the outer peripheral surface side opening of the shaft portion 73 to the inner peripheral surface side opening. The inner peripheral surface side opening of the air supply hole 82 is a one-way valve that normally closes the opening, that is, a one-way valve 83 that allows only an air flow from the outer peripheral surface side opening to the inner peripheral surface side opening.
Is installed.

The tray 72 of each of the yarn feeder stand members S is illustrated on a support plate 84 fixedly attached to a pair of chain constituent members 66a spaced at predetermined intervals on each side A, B, C, D. The thread feeder stand member S is detachably fastened by a bolt or the like so that the thread feeder stand member S can be appropriately replaced according to the shape of the paper tube as the hollow core of the yarn feeder P described later.

The yarn feeder P set on the yarn feeder stand member S is constructed as shown in FIG. 5, and the paper tube 86 around which the weft yarn 85 is wound gradually increases from one end to the other end. It is formed in a substantially conical shape with a small diameter. The yarn feeder P is supported by the yarn feeder stand member S by inserting the paper tube 86 into the peg 74 of the yarn feeder stand member S.

Here, in order to securely hold the paper tube 86 inserted into the peg 74 of the yarn feeder stand member S, the inner peripheral surface of the paper tube 86 is pressed from the inside of the paper tube 86. It is equipped with a clamp member (not shown) that clamps with a clamp. The clamp member includes a pressing portion and an operating portion. The pressing portion is provided at four locations on the outer peripheral surface of the peg 74 so as to be flush with the outer peripheral surface, and the operating portion is disposed on the front side of the chain 66 in the yarn feeding portion. It operates by a guide described later to move the pressing portion to the inner peripheral surface side of the paper tube 86.

A curved portion 86a, which is formed by curving the opening end inward, is provided at the small diameter side opening of the paper tube 86. Further, the paper tube 86 is provided at a substantially intermediate position in the axial direction of the paper tube 86.
A wire net 87 arranged so as to partition the inside is fixedly attached. The function of the wire net 87 will be described later. In the yarn feeder transporting device having the above-described configuration, a feeder for the yarn feeder P transported by a yarn feeder replacing robot, which will be described later, is provided at the upper portion of the device and a weft yarn is pulled out from the yarn feeder P at the device side portion. A yarn supplying portion for supplying the weft yarn storage length measuring device 12, which is a device on the downstream side of the yarn supplying body P, and a collecting portion for collecting an empty pipe having no yarn layer after supplying the weft yarn 85 to the lower portion of the device. It is provided.

The constructions of the supply section, yarn supply section and collection section will be described in detail. First, in FIG. 6, the yarn feeder exchange robot R runs along a rail 88 laid between the stock area and the loom area, receives the yarn feeder P from the yarn feeder supply station in the stock area, and feeds the weft yarn. Transport to the station. Two yarn feeder support portions 89 are provided side by side on an elevator board 91a on the lower surface of the main body 91 of the yarn feeder robot R. The yarn feeder support portion 89 is inserted into the small diameter side opening of the paper tube 86 of the yarn feeder P,
A chuck portion 90 (see FIG. 12) for locking and chucking the inner peripheral surface is provided. It should be noted that a chuck portion that locks and chucks the outer peripheral surface of the entire yarn feeder P may be used.

The main body 91 of the robot R is a yarn feeder P.
When the paper tube 86 of the yarn feeder P is inserted into the peg 74 of the yarn feeder stand member S by stopping at the position above the feeding portion of the transporting device of FIG. The chucking is released and the yarn feeder P is supplied. In this case, a guide rod 92 extending vertically upward through the vicinity of the yarn supplying body P is erected on the upper end horizontal bar 62, and a guide hole (not shown) into which the guide rod 92 is guided and inserted is provided below the elevating table 91a. The guide rod 92 is provided so that the guide rod 92 is inserted into the guide hole when the elevating table 91a is lowered, so that the position of the yarn supplying body P and the yarn supplying body stand member S is surely performed.

At this time, a photo sensor 107 described later detects the yarn feeder P. The yarn feeder P set on the yarn feeder stand member S as described above is, as shown in FIG.
The weft yarn tip portion 85a is inserted into the paper tube 86 through the small-diameter side opening of the paper tube 86. In this case, the weft yarn tip portion 85a is placed on the metal net 87 inside the paper tube 86.

Here, a chuck portion 90 for engaging and chucking the inner peripheral surface of the paper tube 86 is adopted as the feeding portion, but when the weft portion of the yarn feeder is chucked, this chuck winds the weft. This method was adopted because it may break the attached state and the weft may not be unwound well during operation of the loom, resulting in yarn breakage. On the other hand, however, the following problems may occur when the yarn feeder P is transferred from the robot R to the transport device.

That is, when the yarn supplying body P is transferred from the robot R to the conveying device, the weft yarn end portion 85a inserted into the paper tube 86 is separated from the inside of the paper tube 86 of the chuck portion 90 of the robot R. There is a risk that it will be pulled out together with the chuck portion 90. For this reason, in this embodiment, as described above, the yarn feeder stand member S is provided with a yarn suction device including an air supply member or the like to prevent the weft yarn tip portion from being pulled out. ing.

That is, a pair of air nozzles 93 for injecting air from the outer peripheral side opening of the air supply hole 82 of the yarn feeder stand member S shown in FIGS. 3 and 4 toward the inner peripheral side opening. One pair is provided corresponding to the yarn feeder stand members S. The tip of the air nozzle 93 has the air supply hole 82.
Is set at a position facing the opening on the outer peripheral surface side, and the other end is a single electromagnetic valve 9 supported by a bracket 69.
4 and an air regulator 95 to connect to an air supply source (not shown). Therefore, when the photo sensor 107 detects the yarn feeder P, the electromagnetic valve 94 is opened, and the air from the air supply source is simultaneously supplied to the two air nozzles 93, and the air is supplied from each of the two air nozzles 93. The holes 82 are ejected from the outer peripheral surface side opening portion toward the inner peripheral surface side opening portion. As shown in FIG. 4, this blast air pushes the one-way valve 83 open, flows into the space inside the circumferential groove 79, flows into the air supply hole 81 from the space, and is jetted into the air circulation hole 80. The air injected into the air circulation hole 80 is discharged from the rear end portion of the air supply member 77, that is, the rear end opening portion of the air circulation hole 80. As a result, a suction force of air is generated in the air circulation hole 80, and the weft yarn tip portion 85 inserted in the paper tube 86.
It is possible to prevent a from being sucked toward the peg 74 side and the weft yarn tip portion 85a being pulled out of the paper tube 86.

The yarn supplying section is provided with an air ejecting means for injecting air toward the inside of the paper tube 86 of the yarn supplying body P conveyed from the supplying section to the yarn supplying section by driving (moving) the chain 66. The weft yarn tip portion 85a inserted into the paper tube 86 is pulled out from the paper tube 86 by a jet air flow and delivered to the weft storage length measuring device 12.

That is, the air nozzle 96 for injecting air from the rear end opening of the air circulation hole 80 of the yarn feeder stand member S toward the tip opening is one of the pair of yarn feeder stand members S in the yarn feeder. A single unit is provided corresponding to the lower yarn feeder stand member S. The tip of this air nozzle 96 is
At the back side of the chain 66 in the yarn supplying section, the position is set at a position facing the rear end side opening of the air circulation hole 80 of the yarn supplying body stand member S through the window of the chain constituent member 66a, and the other end. The section is connected to an air supply source (not shown) via an electromagnetic valve 97 supported by a bracket 69 and an air regulator 98. Therefore, the electromagnetic valve 97
Is opened, air from the air supply source is supplied to the air nozzle 96, and as shown in FIG. 3, air is jetted from the air nozzle 96 toward the front end opening from the rear end opening of the air circulation hole 80, respectively. .. This air flows from the air circulation hole 80 to the paper tube 86.
Of the weft thread 8 which is injected into the paper tube 86 and inserted into the paper tube 86.
5a is pushed outward from the tip of the paper tube 86 and the weft tip 85a is transferred to the weft storage length measuring device 12. When air is ejected from the rear end opening of the air circulation hole 80 toward the front end opening, as shown in FIG.
Since the air flows into the inner space of the circumferential groove 79 to close the one-way valve 83, the air does not flow out of the air supply hole 82.

Here, as shown in FIGS. 1 and 7, a trumpet-shaped weft receiver 99 is connected to the tip of the weft threading nozzle 43, and as shown in FIG. The weft yarn tip portion 85 extruded outward from the tip portion of the tube 86
receive a. The weft yarn end portion 85a thus received by the weft yarn receiving body 99 is introduced into the nozzle 43 to which high pressure air is sent by the pipe 44.

The yarn supplying portion is provided with a chain guide 100 for preventing the swing of the chain and a positioning guide 101 for the yarn supplying body stand member S. These guides 10
Nos. 0 and 101 are arranged so as to sandwich the chain 66 between the front side and the back side of the chain 66 in the yarn supplying section. Guide 10
0 and 101 are integrally fixedly connected to each other, and cross rails 62 and 6 are connected.
It is fixedly supported by a support bracket 102 which is fixed to 3.

The collecting section is provided with means for withdrawing an empty paper tube 86 (empty tube 86A) from which all the wefts 85 have been drawn out from the yarn feeder stand member S, and means for collecting the withdrawn empty tube 86A. Be done. That is, the chain 6 of each strut 60
In the yarn feeder stand member conveying path below 6
An empty tube extracting cam 103 is provided for each. As shown in FIG. 8, the hollow tube extracting cam 103 is composed of a substantially L-shaped main body 103a and an attachment portion 103b bent at a right angle from one end portion of the main body 103a. The long piece of the main body 103a is tapered at the lower edge so that the width gradually becomes smaller from the tip to the mounting portion. Each tube extraction cam 103
The mounting portions 103b of the above are respectively brought into contact with the inner surface of the support column 60 and fastened by the bolts 104, and the long pieces are set so that the long pieces extend horizontally and are parallel to each other and the tapered portion is on the lower side. It Double tube extraction cam 103
The long pieces are set so as to sandwich the shaft portion 73 of the yarn feeder stand member S from both sides with a slight gap.

Therefore, the yarn feeder stand member S holding the empty pipe 86A is conveyed in the collecting portion, and the shaft portion 73 of the yarn feeder stand member S passes between the long pieces of both the empty pipe extracting cams 103. At this time, by moving the yarn feeder stand member S while the end surface of the rear end portion of the empty tube 86A is in contact with the taper portion of the long piece, a force that pushes down the empty tube 86A is generated. Is removed from the peg 74 and falls.

Below the space conveying section between the columns 60, a hollow tube recovery slider guide 105 having a substantially U-shaped cross-section whose upper surface and front surface are open is inclined so that the front surface side is lower. Are installed. An empty tube collection box 106 is provided on the anchor 61 at the lower end of the column 60 via a guide 127 at a position near the lower end of the column 60. The open end of the empty tube recovery slider guide 105 faces the opening on the upper surface of the empty tube recovery box 106. The bottom plate of the empty pipe collection box 106 is inclined in the same direction as the empty pipe collection slider guide 105, and the dropped empty pipe 86A is replaced by the empty pipe collection box 106.
I try to collect them efficiently on one side.

The bottom plate 106 of the empty tube collection box 106
In the gap formed between the lower surface of the a and the upper surface of the anchor 61, a weight detection type sensor 137 for determining whether the empty tube recovery box 106 is present by sensing the weight of the empty tube recovery box 106 is provided. Has been. Next, the operation of the yarn feeding device of the loom configured as described above will be described.

The yarn feeder changing robot R runs along a rail 88 laid between the stock area and the loom area,
The yarn feeder P from the yarn feeder supply station in the stock area
To receive. In this case, the fully-wound yarn feeder P is chucked and held by the two yarn feeder support portions 89 provided on the elevating table 91a on the lower surface of the yarn feeder exchange robot main body 91. The yarn feeder exchange robot R holding the fully wound yarn feeder P runs to the weft yarn feeding station. In addition, the yarn feeder P is shown in FIG.
As shown in FIG. 5, the weft yarn tip portion 85a is inserted into the small diameter portion of the paper tube 86 through the small diameter side opening portion, and the weft yarn tip portion 85a is on the wire net 87 inside the paper tube 86.

The robot main body 91 stops and descends at a position above the supply portion of the feeder for the yarn feeder P, and the paper tube 86 of the yarn feeder P is fitted (supported) on the peg 74 of the yarn feeder stand member S. At that time, the chucking by the chuck 90 is released, and the yarn feeder P is supplied. In this case, the guide rod 92 is inserted into the guide hole when the robot main body 91 descends, and the positioning of the yarn feeder P and the yarn feeder stand member S is reliably performed.

Here, in the supply section of the conveying device, photosensors 107 each comprising a light projecting section and a light receiving section are provided at positions facing the weft winding section of the yarn supplying body P located on the right side of the drawing. It is fixedly attached to the bracket 108 which is erected on the horizontal rail 62. This photo sensor is
The presence or absence of the yarn supplying body P is detected. When the absence of the yarn supplying body P is detected, a signal for instructing the yarn supplying body exchange robot R to supply the yarn supplying body P and turning on a lamp (not shown) is sent. It is designed to output.

When the yarn feeder P is supplied to the carrying device, the carrying device is driven. That is, by driving the motor 67,
When one bevel gear 70 rotates via the drive shaft 67a, the other bevel gear 71 rotates and the drive sprocket 6
4a rotates. As a result, the chain 66 is driven while rotating the other sprockets 64, and each chain 6
6 moves are made.

When the yarn supplying body P is conveyed from the supplying section to the yarn supplying section by the movement of the chain 66, the driving of the conveying device is stopped. Then, the two yarn feeders P conveyed to the yarn feeder
The weft tip portion 85a inserted into the paper tube 86 of the lower yarn feeder P is drawn out from the paper tube 86 by the jet air flow and delivered to the weft storage length measuring device 12.

That is, when the electromagnetic valve 97 is opened, the air from the air supply source is supplied to the air nozzle 96, and the air is supplied from the air nozzle 96 to the rear end opening of the air circulation hole 80 of the yarn feeder stand member S. Is ejected toward the tip opening. This air is jetted into the paper tube 86 from the air circulation hole 80, and the weft tip portion 85a inserted into the paper tube 86 is pushed outward from the tip portion of the paper tube 86.

The weft yarn tip portion 85a pushed outward from the tip portion of the paper tube 86 is received by the weft yarn receiving body 99 connected to the tip portion of the weft threading nozzle 43, and received by the weft yarn receiving body 99. The weft yarn tip portion 85a is introduced into the nozzle 43 to which high-pressure air is sent by the pipe 44. Then, the operation of the loom is started.

The operation of this loom will be explained. During the operation of the loom, the winding guide 35 rotated by the rotation of the rotor 12 by the motor 31 rotates the outer circumference of the drum 33, and the weft yarn 22
Is wound around the drum 33 and stored for length measurement. When the winding of a predetermined amount or more is completed, this is detected by a winding amount sensor (not shown), and the rotation of the motor 31 is stopped via the rotation control unit 37.

At the time of weft insertion, air is supplied from the pipe 56 in accordance with a command from the air injection control unit 40, air injection from the main nozzle 45 is started, and the electromagnetic actuator 3 is started.
4 operates and the locking body 34a retreats from the hole of the drum 33. This releases the lock on the weft thread 22,
The main nozzle 45 injects air supplied from the pipe 56 to pull out the weft yarn 22 and start weft insertion. At this time, the weft yarn 22 on the drum 33 is pulled out while being rewound around the drum 33.

Then, the unwinding number of the weft yarn 22 from the drum 33 is monitored by the unwinding sensor 41. When one pick length is N turns, the number of signals generated from the unwinding sensor 41 becomes N. The electromagnetic actuator 34 is actuated and the locking body 34a plunges into the locking body 34a. As a result, when the N-winding is unwound, the weft is locked by the locking body 34a and the weft ends. Next, when the weft yarn of the lower side yarn feeder that is supplying yarn in the yarn supplying section is used up, the weft sensor 46 does not detect the tail of the weft yarn 22 wound around the drum 33. This signal is input to the rotation control unit via the arithmetic processing unit 39,
The loom stops operating. With this signal, as shown in FIG.
The locking body 34a retreats to release the locking of the weft yarn 22, and air is jetted from the main nozzle 45 to fly the weft yarn 22 remaining on the drum 33. The weft yarn 22 is sucked and removed by the weft yarn suction / removal device 58.

Next, the weft yarn 2 wound around the drum 33.
When the weft yarn sensor 46 no longer detects the tail of No. 2, the transport device is driven and each chain 66 is moved. By the movement of the chain 66, the yarn feeder P located on the upper side in the yarn feeder is moved. It is transported to the lower side. or,
The yarn feeder located on the lower side is conveyed to the right side of the drawing of the collecting unit. Further, the yarn feeders held on the right side of the two yarn feeders held in the supply unit and waiting are conveyed to the yarn feeding unit (see FIG. 10).

In the yarn supplying section, the tip of the weft thread inserted into the paper tube of the yarn supplying body located on the lower side is pulled out by the jet air flow from the inside of the paper tube in the same manner as described above, and the weft storage length measuring device. And the weft thread is pulled through (see FIGS. 10 and 11). On the other hand, the yarn supplying body P conveyed to the right side of the drawing of the collecting section is an empty paper tube (empty tube 86A) in which all the wefts 85 are drawn out, and this is pulled out from the yarn supplying body stand member S. The empty tube 86A extracted together with this is collected.

That is, when the shaft portion 73 of the yarn feeder stand member S passes between the long pieces of both hollow tube extracting cam bodies 103a in the collecting section, the rear end surface of the hollow tube 86A comes into contact with the tapered portion of the long pieces. While moving the yarn feeder stand member S, a force is generated to push down the empty tube 86A,
The empty pipe 86A is pulled out from the peg 74 and falls. The empty tube 86A that has dropped is the empty tube recovery slider guide 105.
It is dropped into the empty tube collection box 106 from here.

As described above, the yarn supplying body P is supplied in the supplying section, the yarn supplying section supplies the yarn by the jet air flow, and the empty tube 86A is collected in the collecting section. It will be carried out sequentially and continuously. With such a configuration, the robot R conveys the yarn supplying body P to the conveying device, sets the yarn supplying body P on the yarn supplying body stand member S of the conveying device to support the yarn supplying body P, and drives the conveying device to reach the yarn supplying unit. Since the fed yarn is fed from the fed yarn feeder P, it is possible to easily and automatically switch the feeding of the weft yarn from the yarn feeder P, and the yarn feeding structure in the yarn feeder is inserted into the paper tube 86. The weft end portion 85a thus formed is drawn out from the inside of the paper tube 86 by the jet air flow and delivered to the weft storage length measuring device 12. Therefore, the weft yarn 85 in the paper tube of the yarn feeder is provided at the front end portion and the end portion thereof. There is no need for the troublesome work of tying and connecting with, and a device for tying the tip to the weft end of the yarn feeder being used after cutting the weft with the end and end tied together is also unnecessary. It is possible to simplify the device and improve workability.

In particular, according to the above-described embodiment, the wire net 87 is arranged inside the paper tube 86 to prevent the weft yarn tip portion 85a from jumping out to the rear end side of the paper tube 86.
It is possible to prevent the weft yarn tip portion 85a from being pinched when the peg 74 of the yarn supplying body stand member S is fitted. Further, the yarn feeder stand member S is provided with a yarn suction device such as an air supply member to prevent the weft yarn tip portion 85a from being pulled out. Therefore, the robot R feeds the yarn to the conveying device. When the body P is delivered, the weft tip portion 85a inserted into the paper tube 86 is inserted into the paper tube 8 of the chuck portion 90 of the robot R.
There is no possibility of being pulled out together with the chuck portion 90 when detached from the inside.

In the above-described embodiment, the wire net 87 is arranged inside the paper tube 86 to prevent the weft tip portion 85a from jumping out to the rear end side of the paper tube 86. However, instead of the wire net 87, a plate member is used. A circular hole is provided in the center of the plate member, and the yarn supplying body P is brought into communication with the air circulation hole 80 of the stand member S and the circular hole. In this state, the paper tube 8 of the chuck portion 90 of the robot R is
If the tip of the weft in the paper tube 86 is drawn into the air circulation hole 80 by the air blown from the air nozzle 93 when it is separated from the inside of the weft 6, the weft stored in the weft storage length measuring device 12 is moved to the weft storage length measuring device 12 side. When passing through the
Since 0 and the round hole function as a nozzle, the weft thread pulling operation becomes easier.

Further, as shown in FIG. 12, if a recess 86b is provided inside the leading end of the paper tube 86 and the weft 85 is allowed to escape into the recess 86b, the chuck portion 90 which is locked inside the paper tube 86 is formed. It is possible to prevent the weft 85 from being entangled.
Further, in the yarn supplying section, if the yarn supplying bodies P arranged in two rows are pick-tailed to execute the yarn supplying,
Since the yarn is continuously fed from the two yarn feeders P, the number of times the loom is stopped can be reduced.

Further, when the yarn feeder stand member S holding the empty pipe 86A is conveyed in the collecting portion and the shaft portion 73 of the yarn feeder stand member S passes between the empty pipe extracting cams 103. , The empty tube 86A is pushed down, and the empty tube 86A is pulled out from the peg 74 and dropped.
It is not necessary to detach the 6A from the transport device by means having a special drive device.

Now, the second embodiment of the present invention will be described. In this embodiment, in order to reliably pull out the weft, a delivery device for reliably delivering the drawn weft to the weft storage length measuring device 12 is provided. That is, FIG.
3 to 16, the delivery device includes a holding body 109 that sucks and holds the pulled-out weft yarn end portion 85a,
From the side of the yarn supplying body P to the holding body 109, the weft storage length measuring device 12
Arm 110 that moves to the nozzle 43 on the side, and the arm 1
And an operating device 111 that moves up and down and swings 10.

The holding body 109 has an open end,
The open portion is formed of a substantially tubular member that expands like a trumpet, and is formed of rubber, resin, or the like. The actuator 111
Is composed of two air cylinder devices 112, 113. The rear end of the main body 112a of the one air cylinder device 112 is rotatably supported. The rear end of the main body 113a of the other air cylinder device 113 is rotatably supported,
The tip of the piston rod 113b is rotatably connected to the outer surface of the air cylinder device body 112a. A mounting member 114 is connected to the tip of the piston rod 112b of the air cylinder device 112, and the rear end of the holding body 109 is rotatably connected to the mounting member 114. A driven gear 115 is fixedly attached to the rear end of the holder 109, and the gear 115 is supported by the attachment member 114,
It is meshed with a drive gear 116 that is rotationally driven by a motor or a rotary solenoid (not shown). Therefore, when the driven gear 115 is rotated by the rotation of the driving gear 116, the holding body 109 is rotated with respect to the mounting member 114. A suction pipe 117 that communicates with an air suction means (not shown) is connected to the rear end of the holder 109, and the suction pipe 117 communicates with the internal space of the holder 109. Further, an air cylinder device 118 is fixedly attached to the outer peripheral surface of the holding body 109, and a piston rod 118a of the cylinder device 118 is pierced and supported by the holding body 109, and the tip end thereof has an inner peripheral surface of the holding body 109. A weft pressing member 119 located along the is fixedly attached. The weft pressing member 119 is moved forward and backward in the holder 109 by the operation of the air cylinder device 118, and presses the weft tip 85a located in the holder 109 to hold the weft during the forward movement. ..

Next, the operation of such a device will be explained. When the air cylinder device 112 is operated from the state shown in FIG. 13 and the piston rod 112b is extended, the holder 1
09 moves toward the yarn feeder P side. Then, the holding body 109 is rotated at a position where the open end of the holding body 109 faces the opening of the leading end of the paper tube 86 of the yarn feeding body P, and the holding body 1 is rotated.
The leading end opening portion of 09 is brought into pressure contact with the leading end opening portion of the paper tube 86 of the yarn feeder P (see FIG. 14).

Here, when the weft yarn tip portion 85a inserted into the paper tube 86 is pulled out by the blast air as described above, the pulled out weft yarn tip portion 85a is held by the holder 109.
Inserted inside. Then, when air is sucked by the suction pipe 117, the weft yarn tip portion 85a is held by the holding member 109.
Is pulled toward the rear end of the inside of. Here, the weft pressing member 119 is advanced in the holding body 109 by the operation of the air cylinder device 118, and the pressing member 119 is pressed against the weft yarn tip portion 85a located in the holding body 109 to hold it.

Next, when the air cylinder device 113 is operated to extend the piston rod 113b, the air cylinder device 112 swings as shown in FIG.
At the same time, the weft yarn tip portion 85a held by the holding body 109 is pulled out from the yarn feeder P. Holder 1
09 moves toward the nozzle 43 side, and at the position where the open end of the holder 109 faces the weft suction portion of the nozzle 43, as shown in FIG. The open end of 109 is brought into pressure contact with the weft suction part of the nozzle 43.

Here, the pressing member 11 for the weft yarn end portion 85a
The pressure fixing by 9 is released and the nozzle 4 is connected by the pipe 44.
When high-pressure air is sent to the nozzle 3,
Will be introduced in. According to this embodiment, the weft yarn tip portion 85a pulled out from the paper tube 86 of the yarn feeder P can be directly delivered to the weft yarn storage length measuring device 12 without flying.

[0060]

As described above, according to the yarn feeding device of the loom of the present invention, the stand at the yarn feeding station of the loom with the tip of the weft yarn inserted in the hollow core of the yarn feeder in advance. Since the member supports the yarn feeder, and the tip of the weft yarn inserted into the hollow core is drawn out from the core by an air flow and delivered to the downstream side device of the yarn feeder, the yarn feeder of the loom After cutting the weft once at the station,
It is possible to eliminate the need for a device that performs complicated work such as tying the weft yarn end portion to the weft yarn end portion of the yarn feeder being used,
It is of great utility in improving workability and simplifying the device.

[Brief description of drawings]

FIG. 1 is a system configuration diagram of a first embodiment of a yarn feeding device for a loom according to the present invention.

2 is a view taken in the direction of arrow X in FIG.

FIG. 3 is a cross-sectional view showing a configuration of a yarn feeder stand member in the above embodiment.

FIG. 4 is a cross-sectional view showing the configuration of the yarn feeder stand member in the above embodiment.

FIG. 5 is a cross-sectional view showing the structure of the yarn feeder in the above embodiment.

6A and 6B are views showing the configuration of a yarn feeder exchange robot in the same embodiment, in which FIG. 6A is a front view and FIG. 6B is a side view.

FIG. 7 is a sectional view showing a yarn feeding state in the above embodiment.

8A and 8B are views showing an empty tube extracting structure in the same embodiment, where FIG. 8A is a side sectional view and FIG.

FIG. 9 is a system configuration diagram illustrating the operation of the above embodiment.

FIG. 10 is a system configuration diagram illustrating the operation of the above embodiment.

FIG. 11 is a system configuration diagram illustrating the operation of the above embodiment.

FIG. 12 is a diagram showing the configuration of another embodiment of the yarn feeder,
(A) is a sectional view, (B) is a top view

FIG. 13 is a system configuration diagram of a second embodiment of a yarn feeding device for a loom according to the present invention.

FIG. 14 is a system configuration diagram illustrating the operation of the above-described embodiment.

FIG. 15 is a system configuration diagram illustrating the operation of the above-described embodiment.

FIG. 16 is a system configuration diagram illustrating the operation of the above-described embodiment.

FIG. 17 is a diagram illustrating a conventional yarn feeding system.

FIG. 18 is a sectional view showing a structure of a conventional yarn feeder and yarn feeder supporting means.

[Explanation of symbols]

 12 Weft Storage Measuring Device 80 Air Circulation Hole 85 Weft 85a Weft Thread Tip 86 Paper Tube 96 Air Nozzle P Yarn S S Yarn Stand Member

Claims (1)

[Claims] 1. A stand member for supporting, at a yarn feeding station of a loom, a yarn feeder having a weft yarn tip portion previously inserted in a hollow core, and a hollow core of the yarn feeder supported by the stand member. A weft feeding device for a loom, comprising means for pulling out the weft yarn end portion from the core by an air flow and delivering it to a downstream side device of the yarn feeding body.