JPH086060Y2 - Yarn supply processing equipment in jet loom - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a device between a weft cheese and a winding type weft measuring and storing device, or between a weft measuring and storing device and a main nozzle for weft insertion. The present invention relates to a device for performing new weft supply processing when a weft supply error such as weft breakage occurs.

[Prior Art] This type of yarn feeding apparatus is disclosed in Japanese Patent Laid-Open No. 63-264949. In this conventional device, the suction guide body sucks and grips the weft tip portion on the weft cheese at the suction gripping action position near the peripheral surface of the weft cheese, and the suction guide body that suction grips the weft tip portion is the winding type weft measuring length. It is arranged to be moved to the side of the introduction pipe connected to the storage device. The weft tip, which is sucked and gripped by the suction guide body that is connected to the weft measuring and storing device and is moved to the introducing pipe side, is sucked and introduced into the introducing pipe by the suction action of the introducing pipe, and is passed to the weft measuring and storing device. It

[Problems to be Solved by the Invention] Although the shape of the suction grip of the weft yarn to be gripped by the suction guide body is linear, the area to be acted on by the linear yarn that is subjected to the action of the carrier flow such as suction or blowing However, the reliability is lacking in the transport system in which a transport flow is applied to such a linear yarn to move it to another position.

It is an object of the present invention to provide a yarn feeding processing device that can achieve certainty of yarn movement using a carrier flow.

[Means for Solving the Problem] Therefore, in the present invention, in the present invention, a dense holding means for densely holding the wefts, a switching means for switching the dense holding area of the dense holding means between a take-up working position and a standby position, and the dense packing. The yarn feeding processing device is configured by a carrier flow generation unit that generates a carrier flow that passes through the standby position in the holding area.

[Operation] When pulling out the weft tip portion from the weft cheese, the dense holding area of the dense holding means is arranged at the take-up action position in the vicinity of the weft cheese, and the weft tip portion on the weft cheese is taken over the dense holding area and gathered. Retained. As this holding method, there is, for example, a suction gripping method via a net, and the tip of the weft yarn on the weft cheese is densely held on the net.
Alternatively, there is a method in which the tip of the brush is attached and held in a dense state. When the dense holding area of the dense holding means that holds the leading ends of the wefts in this way is switched to the standby position, the carrying action of the carrying flow generating means causes the wefts densely held on the dense holding area to be carried by the carrying flow. Move in a given direction.

[Embodiment] An embodiment embodying the present invention will be described below with reference to FIGS.

A yarn feeder 1 is placed on the side of the loom stand, and a spindle 2 is rotatably supported on the upper surface of an upper frame 1a of the yarn feeder 1 while supporting the spindle 2 A turntable 3 is supported on the upper end. A motor 4 is mounted on the lower surface of the upper frame 1a, and its drive gear 4a meshes with a driven gear 5 fixed to the lower end of the support shaft 2. Therefore, the turntable 3 is rotated by the operation of the motor 4.

The turntable 3 has a pair of bobbin holding brackets 6,
7 is rotatably supported at a rotationally symmetrical position of 180 °,
Driven gears 6a, 7a are fixed to the lower ends of the bobbin holding brackets 6, 7. A motor 8 is provided on the upper surface of the upper frame 1a of the yarn feeder 1.
Is mounted, and the drive gear 8a is attached to the turntable 3
Are arranged on the rotation loci of the driven gears 6a, 7a accompanying the rotation of the. An air cylinder 9 is erected on the upper frame 1a within the turning radius of the turntable 3, and the tip of the rod 9a can intersect and separate from the rotation surface of the turntable 3. The air cylinder 9 is connected to a pressure air supply tank (not shown) via a three-way valve type electromagnetic valve V ₁ .

On the lower surface of the turntable 3, there are a pair of positioning recesses 3a, 3a.
b is a rotationally symmetric position of 180 ° and is provided so as to be engageable with the rod 9a, and when the positioning recess 3a and the rod 9a are engaged, the drive gear 8a meshes with the driven gear 6a and the positioning recess is formed.
The drive gear 8a meshes with the driven gear 7a when the rod 3a and the rod 3b are engaged with each other. If the motor 8 operates with the drive gear 8a and the driven gear 6a meshed, the weft cheese 10A on the bobbin holding bracket 6 rotates, and if the motor 8 operates with the drive gear 8a and the driven gear 7a meshed, the bobbin Retaining bracket 7
The upper weft cheese 10B rotates.

Winding diameter sensors 47 and 48, which are reflection type photoelectric sensors, are installed in the vicinity of the bobbin holding brackets 6 and 7, and detect the presence or absence of the weft cheeses 10A and 10B on the bobbin holding brackets 6 and 7.

Reference numeral 11 is a tail holder that holds the connection between the end of the weft Y ₁ of the weft cheese 10A and the start of the weft Y ₂ of the weft cheese 10B.

A pair of support brackets 1b is erected on one side of the yarn feeding stand 1, and a suction arm 12 is hung between the tip portions thereof so as to be rotatable around a support shaft 12a, and its tip ends. A suction pipe portion 13 and a net 13a which form a dense holding means are formed in the portion. The turning radius locus of the suction pipe portion 13 is set so as to intersect with the peripheral surface of the weft cheese (10A in the case shown) on the motor 8 side, and the net 13a is attached to the tip of the suction pipe portion 13. In addition, the roller 13b is attached in the vicinity thereof. A blower 14 is installed on the lower frame 1c of the yarn feeder 1, and the base end of the suction pipe portion 13 is connected to the blower 14 via a hose 15, a dust box 16 and a filter 16a.

A channel-shaped transport guide 17 is suspended from the tip of the support bracket 1b. The tip thereof reaches the base end of the weft cheese on the motor 8 side, and a window 17a is transparently provided on the inner back surface of the tip of the conveyance guide 17. The window 17a is set at the tip of the suction pipe portion 13, that is, on the turning radius locus of the net 13a, and the suction pipe portion 13 can move in and out of the window 17a. A blow nozzle 18 which constitutes a carrier flow generating means is attached to a base end portion of the carrier guide 17, and is connected to a pressure air supply tank via a two-way valve type electromagnetic valve V ₃ . The blowing direction of the blow nozzle 18 is the conveyance guide 17
The jet flow from the blow nozzle 18 is guided upward along the conveyance guide 17 along the inner back surface of the.

An air cylinder 19 constituting a switching means is attached to the tip of the support bracket 1b, and its drive rod 19a is connected to the suction arm 12. Air cylinder 1
9 is connected to the pressure air supply tank via a three-way valve type electromagnetic valve V ₂ , and when the electromagnetic valve V ₂ is in the demagnetized state, the drive rod 19a is in the protruding state and the suction arm 12 is shown in FIG. It is placed and held in the standby position. This match on the window 17a of the net 13a is conveying guide 17 in the standby position, the support shaft 12 and the suction arm 12 solenoid valve V ₂ is energized by its own weight
Rotate and fall around a. The roller 13b comes into contact with the peripheral surface of the weft cheese by this pivotal drop.

A yarn insertion guide 20 is horizontally arranged above the yarn supplying base 1 so as to be orthogonal to the rotation axis of the turntable 3, and a blow nozzle 21 is arranged at the base end portion thereof. The blow nozzle 21 is connected to the pressurized air supply tank via a two-way valve type electromagnetic valve V ₄ . An introduction port 20a is provided on the lower surface of the thread insertion guide 20. The introduction port 20a is set at a position where the axes of the pair of bobbin holding brackets 6 and 7 and the rotation axis of the turntable 3 intersect each other, and the upper end of the transport guide 17 is directed to the introduction port 20a.

A well-known winding type weft measuring and storing device 22 is installed immediately in front of the yarn insertion guide 20, and the yarn winding tube 22a is rotationally driven by a motor M different from a loom drive motor (not shown). . The weft yarn fed out from the yarn winding tube 22a by the rotation of the yarn winding tube 22a is controlled to be pulled out from the yarn winding surface 22b by the retracting of the locking pin 23a driven by the electromagnetic solenoid 23. A yarn breakage sensor 24, which is a transmissive photoelectric sensor, is installed in a weft introduction portion 22c communicating with the yarn winding tube 22a, and a weft insertion blow nozzle 25 is attached. The weft insertion blow nozzle 25 is connected to a pressurized air supply tank via a two-way valve type electromagnetic valve V ₅ . The jet flow from the weft insertion blow nozzle 25 is blown out toward the main nozzle 26 for weft insertion from the yarn winding tube 22a communicating with the weft introduction portion 22c of the weft measuring and storing device 22.

A plurality of yarn discharge blow nozzles 28 are mounted on the convergent guide tube 27 that supports the electromagnetic solenoid 23, and their jetting directions are set so as to be directed on the yarn winding surface 22b. The jet flow from the yarn discharge blow nozzle 28 sweeps over the yarn winding surface 22b, and when the locking pin 23a is separated from the yarn winding surface 22b, the winding yarn on the yarn winding surface 22b is the yarn winding surface. Excluded from 22b. The yarn discharge blow nozzle 28 is connected to the pressurized air supply tank via a two-way valve type electromagnetic valve V ₆ .

The blow nozzle 29 and the suction pipe 30 are arranged so as to face each other with the area immediately before the small diameter port of the convergent guide tube 27 interposed therebetween, and the blow nozzle 29 is connected to the pressure air supply tank via a two-way valve type electromagnetic valve V _7. In addition, the suction pipe 30 is a blower.
Connected to 31. Fixed blade 30 at the inlet of the suction pipe 30
a is attached, and in the suction pipe 30, a weft yarn detector 32 including a transmission type photoelectric sensor is installed.

An arm 33 is rotatably supported by a motor 34 near the suction pipe 30, and a fixed gripping body 33a is fixed to the tip of the arm 33. A movable gripping body 33b is rotatably supported at the tip of the arm 33 so as to be joined to the fixed gripping body 33a, and an electromagnetic solenoid 35 is operatively connected to the movable gripping body 33b. Both gripping bodies 33a, 33b are always in an open state, and the two gripping bodies 33a, 33b are joined by the excitation of the electromagnetic solenoid 35. The passing area of both gripping bodies 33a, 33b (hereinafter referred to as a thread gripping device) due to the swinging of the arm 33 intersects the area between the blow nozzle 29 and the suction pipe 30 facing each other, and the inlet of the weft inserting main nozzle 26. It is set close to 26a.

A thread breakage sensor 36 consisting of a transmissive photoelectric sensor is installed in the inlet 26a of the weft-insertion main nozzle 26, and a fixed blade 26b is provided at the upper end of the weft-insertion main nozzle 26. It is fixed so that it protrudes slightly from the tip.

A blow nozzle 37 is installed directly below the weft-insertion main nozzle 26, and the jetting direction is the main nozzle for weft-insertion.
It is set to intersect with 26 injection paths. A weft introduction duct 38 is installed directly above the weft insertion main nozzle 26, and its inlet 38a is set at a position facing the injection port of the blow nozzle 37 across the injection path of the weft insertion main nozzle 26. At the same time, the outlet 38b is set at a position that points toward the rear of the weft inserting main nozzle 26.

An air guide 39 is installed behind the exit 38b,
A weft detector 40 composed of a transmission type photoelectric sensor is attached to the tapered inner passage of the air guide 39. A suction pipe 41 is installed behind the air guide 39, the outlet side of the suction pipe 41 is curved toward a dust box (not shown), and a blow nozzle 42 is provided in this curved portion.
Are connected to point to the dust box.

The weft insertion main nozzle 26, the blow nozzle 37, the weft introduction duct 38, the air guide 39, and the suction pipe 41 are all mounted on the sley, and integrally swing as the sley swings. A weft take-up motor 43 is installed behind the swinging region of each of these members 26, 37, 38, 39, 41, and an air cylinder 45 is provided directly above the drive roller 44 operatively connected to the weft take-up motor 43. It is arranged. A driven roller 46 is rotatably supported by the drive rod so as to face the drive roller 44, and can be pressed against the drive roller 44 by the protruding operation of the air cylinder 45.

The weft insertion main nozzle 26 and the blow nozzles 37, 42 are both connected to the pressure air supply tank via two-way valve type electromagnetic valves V ₈ , V ₉ , V ₁₀ , and the air cylinder 45 is a three-way valve type. It is connected to the pressurized air supply tank via the solenoid valve V ₁₁ .

Each solenoid valve V ₁ as shown in FIG. 10 ~V _11, the motor 4,
8,34,43, M, blowers 14,31 and electromagnetic solenoids 23,35 are commanded by a control computer C which is different from the loom control computer. The control computer C uses the thread break sensor 24,3
6.In response to the detection signals from the weft yarn detectors 34, 40 and the winding diameter sensors 47, 48, the open / close control of the electromagnetic valves V _{1 to} V ₁₁ is performed, and the motors 4, 8, 34, 43, M, and the blower 14 , 31 and electromagnetic solenoids 23, 35 are controlled to be demagnetized.

FIGS. 11 (a) to 11 (d) show a case where a thread break occurs between the weft cheeses 10A and 10B and the weft measuring and storing device 22, that is, when the thread break sensor 24 detects the absence of the weft during the operation of the loom. 2 is a flowchart showing a yarn feeding processing program, and the yarn feeding processing work will be described below with reference to this flowchart.

During operation of the loom, yarn feeding is performed in the weft cheese (10A in the case shown) on the side of the transport guide 17, and Figs. 1 and 2 show the state of weft Y ₁ pulled out from the weft cheese 10A during loom operation. Represent When the weft cheese 10A becomes empty, this empty state is detected by the winding diameter sensor 47. The control computer C commands the opening of the electromagnetic valve V ₁ based on the detection information from the winding diameter sensor 47, and the positioning rod 9a separates from the positioning recess 3a. Then, the control computer C commands the operation of the motor 4 by a predetermined amount, and the turntable 3 is rotated half a turn. As a result, the weft cheeses 10A and 10B are replaced with each other, and the weft cheese 10B is arranged on the yarn drawing position.

If the weft Y ₁ is cut on the yarn feeding path between the weft cheese 10A and the weft measuring and storing device 22 when the weft cheese 10A is on the yarn drawing position, the yarn breakage sensor 24 detects this,
A yarn feeding error detection signal is sent to the control computer C. The control computer C sends a loom stop signal to the loom control computer in response to the yarn feeding error detection signal, and the loom control computer issues a loom stop command in response to this signal. As a result, the weft inserting main nozzle 26 on the sley is stopped near the cloth fell position. After the machine stand is stopped, the loom control computer issues a command to reverse the machine stand by a predetermined amount, and the weft inserting main nozzle 26 is moved to the final retracted position (threading position) shown in FIG.

After reversing the machine base, the control computer C sets the electromagnetic solenoid 23
Excitation and electromagnetic valves V ₉ and V ₈ are commanded to open, and the locking pin
23a is separated from the bobbin winding surface 22b, and the blow nozzle 37
And the main nozzle 26 for weft insertion jets. Winding surface 22b
When there is a winding residual yarn on the upper side, this winding residual yarn is ejected from the weft inserting main nozzle 26, but is introduced into the weft introducing duct 38 by the strong blowing action of the blow nozzle 37, and the air guide 39 It reaches the installation position of the weft detector 40 inside.

The control computer C commands the closing of the electromagnetic valves V ₈ and V ₉ based on the weft detection signal from the weft detector 40 and the opening of the electromagnetic valve V ₁₁ , and the main nozzle 26 for weft insertion and the blowing. The ejection of the nozzle 37 is stopped and the rollers 44 and 46 are joined. As a result, the weft yarn introduced into the air guide 39 is pressed and held by the rollers 44 and 46.

The control computer C commands the opening of the electromagnetic valve V ₁₀ and the operation of the take-up motor 43 so that the blow nozzle 42 jets and the weft take-up by the rollers 44 and 46 is started. When the weft passes between the pair of rollers 44 and 46, the weft detector 40
Detects the absence of weft, and the control computer C commands the operation stop of the take-up motor 43 based on the weft non-detection signal.
Further, the control computer C commands the closing of the electromagnetic valves V ₁₀ and V ₁₁ and the demagnetization of the electromagnetic solenoid 23. As a result, the ejection of the blow nozzle 42 is stopped, the rollers 44 and 46 are separated from each other, and the locking pin 23a is engaged with the yarn winding surface 22b.

If there is no winding residual yarn on the winding surface 22b, weft detector 4
0 does not detect the presence of the weft, and the control computer C
When the weft presence detection signal cannot be obtained within the predetermined time, the process shifts to the following yarn feeding process.

The control computer C with directing the operation of the blower 31, commands the opening of the electromagnetic valves _{V 7, V 6, V 5} , V 4. As a result, an air flow toward the suction pipe 30 is generated between the blow nozzle 29 and the suction pipe 30, and the blow nozzle 2
9,28,25 are jetted and blown out from the tip of the thread winding tube 22a toward the convergent guide tube 27 through the thread winding tube 22a. The blowout flow from the bobbin winding tube 22a is jetted from the tip end of the convergent guide tube 27 between the blow nozzle 29 and the suction pipe 30 by the converging action of the convergent guide tube 27, and between the blow nozzle 29 and the suction pipe 30. It joins the air flow and is introduced into the suction pipe 30.

After the air flow is generated on the path from the yarn insertion guide 20 to the suction pipe 30, the control computer C commands the excitation of the electromagnetic valve V ₂ , and the air cylinder 19 is retracted. As a result of this immersing operation, the suction arm 12 pivots and falls about the support shaft 12a due to its own weight as shown in FIGS.
The roller 13b attached to the abutting portion contacts the peripheral surface of the weft cheese 10A. In this contact state, the net 13a of the suction pipe portion 13
Is close to the surface of weft cheese 10A. Subsequently, the control computer C commands the operation of the blower 14, and the suction pipe unit 13
A suction action occurs at the tip of the. After the suction action occurs, the control computer C commands the operation of the motor 8 by a predetermined amount, and the weft cheese 10A rotates by a predetermined amount. By the suction action of the suction pipe portion 13 and the rotation of the peripheral surface of the weft cheese 10A, the weft cheese 10A
The upper end portion of the weft thread Y ₁₁ is connected to the suction pipe portion 13 via the net 13a.
And the weft yarn end portion Y ₁₁ is suction-held on the net 13a. Accordingly, the weft tip Y ₁₁ is on the net 13a by appropriately setting the amount of rotation of the weft cheese 10A is densely held by suction.

After rotating the weft cheese 10A by a predetermined amount, the control computer C
Command the demagnetization of the electromagnetic valve V ₂ , and the suction pipe portion 13 returns to the standby position as shown in FIG. By this return, the weft yarn end portion Y ₁₁ suction-held on the net 13a in a dense state is arranged near the inner back surface of the transport guide 17. Under this condition, the control computer C commands the opening of the electromagnetic valve V ₃ , and the blow nozzle 18 ejects. The jet flow from the blow nozzle 18 sweeps over the inner back surface of the conveyance guide 17, and the weft tip portion Y densely held on the net 13a by this sweep air flow.
_As shown in FIG. 7, ₁₁ is conveyed and guided along the conveyance guide 17 to the yarn insertion guide 20 side.

The weft yarn end portions Y ₁₁ densely held on the net 13a are effectively subjected to the jetting action of the blow nozzle 18 due to the dense shape. That is, the pressure receiving area of the jetting action in the dense yarn shape is significantly larger than the pressure receiving area of the jetting action in the linear yarn shape, and the jetting action of the blow nozzle 18 is slightly larger than the suctioning action by the suction pipe portion 13. Sufficient transporting action can be obtained with such a degree. Therefore, the weft yarn end portion Y ₁₁ pulled out from the peripheral surface of the weft cheese 10A is used as the weft measuring and storing device 22.
The weft cheese 1 of the weft yarn end portion Y ₁₁ is a prerequisite for successful threading into the weft measuring and storing device 22.
The movement from the 0A side to the weft measuring and storing device 22 side is reliably performed.

In the conventional suction gripping method in which the weft yarn tip portion is sucked and introduced into the suction pipe, it is necessary to cut the weft yarn tip portion, which has been sucked and introduced, into a short length by cutting with a cutter. If this trimming is not performed, the weft tip introduced into the suction pipe becomes a movement resistance when the weft tip is moved to another position by the air flow, and the weft tip held in a straight line moves. Becomes more difficult. However, in this embodiment, it is not necessary to perform such trimming by the cutter, and the mechanism and the control are simplified.

The suction pipe portion 13 with the net 13a for providing such a reliable yarn conveyance is always arranged and held in the standby position by the air cylinder 19 in the protruding state, but the net 13a at the tip of the suction pipe portion 13 is set to the weft cheese 10A. The operation to bring it closer to the peripheral surface of the air cylinder 19 is the immersion operation, that is, the electromagnetic valve.
Excitation of V ₂ is enough. When the electromagnetic valve V ₂ is excited, the suction arm 12 rotates and falls by its own weight, and the roller 13b comes into contact with the peripheral surface of the weft cheese 10A. This abutting action is weft cheese 10A
Regardless of the diameter of the suction pipe section 13
The control for disposing 13a close to the peripheral surface of the weft cheese 10A is extremely simple regardless of the diameter of the weft cheese 10A.

In the configuration in which the tip of the suction pipe portion 13 is arranged in the vicinity of the peripheral surface of the weft cheese 10A by the gravity dropping method, the arrangement shape of the weft cheese 10A at the yarn drawing position is important, and the weft on the yarn drawing position is the same as in the present embodiment. When the thread withdrawal target is moved to another weft cheese 10B with the consumption of the cheese 10A, the weft cheese 10B is arranged on the thread withdrawing position with the same arrangement shape as the weft cheese 10A, that is, both weft cheeses 10A, Replacement of 10B is required. In order to replace this, in this embodiment, the turntable 3 is rotatably supported in a horizontal plane, and this supporting structure is very excellent in weight balance. Therefore, the turntable 3 rotates smoothly, and the motor 4 can be small in size.

If the threading of the weft Y ₁ fails such that the tip of the weft Y ₁ does not pass through the weft measuring and storing device 22, the weft Y ₁ does not reach the inside of the suction pipe 30, but the control computer C causes the weft detector 32
With commanding deactivation of the solenoid valves _{V 3, V 4, V 5} , V 6, V 7, the closed and blocks 14, 31 in the case where the weft chromatic detection signal not be obtained within the set time from, An alarm command is sent to the alarm device 49.

If threading of the weft Y _{1 to} the suction pipe 30 is successful,
The control computer C is a solenoid valve V ₃ , V ₄ , V ₅ , V ₆ , V ₇ ,
Is closed and the operation of the block 14 is stopped. At this point, the blower 31 is in operation, and the tip of the weft Y ₁ is sucked and gripped by the suction pipe 30. Under this condition, the control computer C commands the motor M to operate by a predetermined amount, and the bobbin winding tube 22a rotates by a predetermined amount. As a result, the bobbin winding surface 22b
A predetermined amount of weft Y ₁ is pre-wound on the upper side.

Next, the control computer C commands the normal rotation of the motor 34 by a predetermined amount and the excitation of the electromagnetic solenoid 35. As a result, the yarn grippers 33a, 33b rotate and pass through the tension region of the weft Y _{1 in} the open state, and close after passing through the tension region of the weft Y ₁ . Thread gripper 33
The weft Y ₁ is gripped by the yarn grippers 33a, 33b by the closing operation of the a and 33b, and the gripped weft Y ₁ moves on the suction pipe 30 when moving toward the inlet 26a of the weft insertion main nozzle 26. The fixed blade 30a is contacted and cut and separated. This makes the weft Y
The extension length from _one yarn gripper 33a, 33b is adjusted to a constant length, and the extension end portion from the yarn gripper 33a, 33b is arranged in the vicinity of the inlet 26a of the weft inserting main nozzle 26.

After stopping the motor 34 from rotating in the normal direction by a predetermined amount, the control computer C commands the excitation of the electromagnetic solenoid 23 and commands the opening of the electromagnetic valves V ₉ and V ₈ , and the locking pin 23a causes the bobbin winding surface 2 to move.
The blow nozzle 37 and the weft-insertion main nozzle 26 spray while separating from the 2b. The jet of the weft-insertion main nozzle 26 produces a suction air flow at its inlet 26a, and the tip of the weft Y ₁ extending from the yarn grippers 33a, 33b is introduced into the weft-insertion main nozzle 26.

After that, the control computer C commands the demagnetization of the electromagnetic solenoid 35 and the reverse rotation operation of the motor 34 by a predetermined amount, and the thread gripper 33
The a and 33b release the tip of the weft Y ₁ and then return to the standby position. As a result, the tip of the weft Y ₁ introduced into the weft insertion main nozzle 26 is blown out from the weft insertion main nozzle 26, and the injection action of the blow nozzle 37 causes the weft introduction duct.
Introduced into 38.

When the tip of the weft Y ₁ reaches the position of the weft detector 40 in the air guide 39, the control computer C causes the weft detector
The subsequent yarn feeding process is continued based on the weft presence detection information from 40. When the threading into the weft inserting main nozzle 26 fails, the tip of the weft Y ₁ does not reach the position of the weft detector 40, but the control computer C detects the weft presence information from the weft detector 40. If it is not obtained within the set time, the solenoid valves V ₈ and V ₉ are closed and the solenoid solenoid 23
Command the demagnetization of. As a result, the weft insertion main nozzle 26
And the injection of the blow nozzle 37 is stopped and the locking pin
23a engages the bobbin winding surface 22b.

When the number of threading failures has not reached the set number n, the control computer C performs the processing operation after the preliminary winding of the weft on the weft measuring and storing device 22, and when the number of threading failures reaches the set number n. Is a blower 31 deactivation and alarm device
Command 49 alarms.

When the threading is successful, the control computer C determines the electromagnetic valve V ₈ , based on the weft presence detection signal from the weft detector 40.
V ₉ closed, blower 31 deactivated, electromagnetic solenoid 23
Command the demagnetization of. Next, the control computer C commands the excitation of the electromagnetic valve V ₁₁ , and the air cylinder 45 operates to project. As a result, the driven roller 46 is joined to the driving roller 44, and the weft Y ₁ is gripped between the rollers 44 and 46. continue,
The control computer C commands the motor M to operate a predetermined amount,
The weft Y ₁ is pre-wound by a predetermined amount. After this preliminary winding, the control computer C commands the opening of the electromagnetic valve V ₁₀ , and
It commands the operation of the weft take-up motor 43. As a result, the weft Y ₁ is pulled, and the pulling tension causes the weft Y ₁ to be cut and separated by the fixed blade 26b. This cut piece is taken up by both rollers 44 and 46 and blown nozzle 4
2 is discharged to the dust box.

When all the cut pieces of the weft Y ₁ pass through the air guide 39, the weft detector 40 detects the absence of the weft, and the control computer C stops the operation of the motor 43 and demagnetizes the electromagnetic valve V ₁₁ based on the weft non-detection information. Command. As a result, the operation of the weft take-up motor 43 is stopped and the roller pairs 44 and 46 are separated from each other. Then, the control computer C commands the closing of the electromagnetic valve V ₁₀ , and the injection of the blow nozzle 42 is stopped. After that,
The machine base rotates to the starting position and prepares for restarting the loom.

The present invention is of course not limited to the above-mentioned embodiment, but the embodiments shown in FIGS. 12 and 13 are also possible.

In the embodiment of FIG. 12, a brush 51 is attached to the tip of an arm 50 hung and supported so that it can drop by its own weight, like the suction arm 12 of the above embodiment.
In the self-weight falling state, the roller 50a comes into contact with the peripheral surface of the weft cheese 10A, and also contacts the bristle tips of the brush 51 and the peripheral surface of the weft cheese 10A. Therefore, weft cheese 10
When A is rotated, the bristle tips of the brush 51 relatively sweep over the peripheral surface of the weft cheese 10A, and the weft tip Y ₁₁ on the weft cheese 10A is brushed.
It adheres to 51 hair tips in a dense state. Weft Y with brush 51
₁₁ dense retention of bristles of the brush 51 is possible in only adhesion to the yarn, the weft Y ₁₁ which densely adhered to the brush 51 is peeled off easily by injection action of the blow nozzle 21. According to such a dense holding method that does not have a suction action, the mechanism and control are significantly simplified.

Needless to say, a suction action may be added to the adhered and dense holding of the brush 51, and thereby the weft thread tip can be more reliably peeled off from the peripheral surface of the weft cheese 10A.

FIG. 13 shows an embodiment in which the present invention is applied to the removal of unwound residual yarn on the yarn winding surface 22b of the weft measuring and storing device 22.

A suction pipe 53 is attached to the tip of the drive rod of the air cylinder 52, and a net 53a is fixed to the tip of the suction pipe 53. The air cylinder 52 is operatively connected to the motor 54, and the suction pipe 53 moves to the vicinity of the thread winding surface 22b and the suction pipe 30 inlet as shown by the chain line by the rotating operation of the motor 54 and the retracting operation of the air cylinder 52. It can be arranged. The suction pipe 53 is connected to the blower 31, and if the blower 31 is operated while the net 53a is arranged in the vicinity of the yarn winding surface 22b, the unwound residual yarn on the yarn winding surface weft 22b is adsorbed on the net 53a. It Attach the locking pin 23a to the bobbin winding surface 22.
If the net 53a is moved to the suction pipe 30 side along the yarn winding surface 22b while being separated from b, the unwound residual yarn is easily removed from the yarn winding surface 22b and is suction-held in a dense state on the net 53a. It The suction pipe 53 for sucking and gripping the wound residual thread in a dense state is arranged near the inlet of the suction pipe 30 and
The wound residual yarn densely held on 53a is surely sucked and introduced into the suction pipe 53 by the air flow between the suction pipe 30 and the blow nozzle 29.

[Effects of the Invention] As described in detail above, the present invention allows the weft yarns densely held by the dense-holding means to be placed on the transport stream generated by the transport-stream generating means, so that the dense-holding operation is performed for the yarn feeding process. The weft that has been subjected to is effectively subjected to the transport action of the transport flow,
As a result, there is an excellent effect that the weft movement in the predetermined direction, which is a prerequisite for the success of the yarn feeding process, can be surely performed.

[Brief description of drawings]

1 to 11 show an embodiment embodying the present invention.
Fig. 2 is a side sectional view showing a yarn feeding guide state during operation of a loom, Fig. 2 is a plane sectional view of the same, Fig. 3 is a bottom sectional view of an essential part, and Fig. 4 is a side sectional view showing a state in which a suction arm falls by its own weight. FIG. 5 and FIG. 5 are perspective views of the main part, FIG. 6 is a perspective view of the main part showing a state in which the suction arm returns to the waiting position with the wefts held densely, and FIG. 7 shows the wefts held densely. Fig. 8 is a perspective view showing a state in which the weft is being conveyed along the conveyance guide, Fig. 8 is a plan sectional view showing the state in which the weft tip passes through the weft measuring and storing device, and Fig. 9 shows the weft take-up. FIG. 10 is a side cross-sectional view showing a state where the roller pair is passed to the joining position, FIG. 10 is a block diagram,
FIGS. 11 (a) to 11 (d) are flowcharts showing the yarn feeding processing program, and FIGS. 12 and 13 are side sectional views of main parts showing other examples. Suction pipe part 13 and net 13 which constitute a dense holding means
a, an air cylinder 19 which constitutes a switching means, and a blow nozzle 18 which constitutes a carrier flow generating means.

Claims (1)

[Scope of utility model registration request] 1. A jet loom in which wefts drawn from weft cheese are measured and stored by a winding type weft measuring and storing device, and the wefts thus measured and stored are injected from a weft inserting main nozzle. A dense holding means for holding the wefts in a dense manner; a switching means for switching the dense holding area of the dense holding means between a working position and a standby position; and a conveyance for generating a conveying flow passing through the standby position of the dense holding area. A yarn feeding processing device in a jet loom configured by a flow generation means.