JP2504950Y2 - Yarn supply processing device in jet room - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a device for performing yarn feeding processing when yarn breakage occurs between a weft cheese and a main nozzle for weft insertion.

[Prior Art] This type of yarn feeding processor is disclosed in Japanese Utility Model Laid-Open No. 1-62377 and Japanese Patent Laid-Open No. 1-118644. In each of these devices, the tip of the weft yarn of the preliminary cheese is gripped by the nippers, and when it is necessary to thread the weft measuring and storing device of the winding system, the nippers that grip the weft yarn end from the standby position. It is arranged to be switched to the through position. The tip of the weft arranged at the threading position is released from the nipper and introduced into the weft measuring and storing device by a suction action.

[Problems to be Solved by the Invention] The weft thread passed through the weft length measuring and storage device needs to be wound several times on the thread winding surface before the operation of the loom is started. This pre-winding must be done neatly on the winding surface in order to prevent weft insertion errors, and for that purpose a tensor is placed between the weft cheese and the weft measuring and storing device to wind on the winding surface. It is necessary to give an appropriate tension to the weft. If there is no tensioner, the weft may be pulled out from the weft cheese when the loom is stopped. If such a pullout occurs, the weft insertion will be hindered thereafter.

However, in the above-mentioned conventional device, it is not possible to thread the tenser and the yarn feeding process cannot be automated.

It is an object of the present invention to provide a yarn feeding processing device capable of automating the yarn feeding process regardless of the presence of a tensor.

[Means for Solving the Problems] Therefore, in the present invention, a plurality of weft cheeses for individually applying tension to the wefts drawn from a plurality of weft cheeses and supplied to the weft measuring and storing device are provided. The same number of tensors are installed, and a yarn feeding guide nozzle for inserting the wefts that have passed through the tensors into the weft introduction part of the weft measuring and storing device is installed in front of the weft measuring and storing device, and a plurality of tensors are provided. By moving either one of the yarn guide nozzles, the yarn delivery port of the tensor and the inlet of the yarn supply nozzle can be switched and faced by the facing switching means, and the tensioning of the tenser to the weft yarn can be temporarily released by the releasing means. I did it.

[Operation] The tip of the weft thread other than the weft cheese that has been passed through the weft measuring and storing device is passed through the tensor in advance, and the yarn delivery port of the tensor that holds the weft that is passed through the weft measuring and storing device and the feeding The inlet of the yarn guide nozzle faces. When the weft thread passing through the weft length measuring and storing device is cut before the weft length measuring and storing device, the yarn feeding port of another tensor and the inlet of the yarn feeding guide nozzle are switched to face each other, and the tenser is released by the releasing means. The tension applied to the weft is temporarily released. In this state, the yarn feeding guide nozzle jets, and the weft yarn tip extending from the tenser is introduced into the yarn feeding guide nozzle by the suction action of this jet, and the weft measuring and storing device is also fed by the jet action of the in-feed yarn nozzle. Is inserted.

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

Three weft cheeses 1A, 1B,
1C is installed and supported. In the front of the weft cheeses 1A, 1B, 1C, a known winding type weft measuring and storing device 2 is installed, and the yarn winding tube 2a is rotated by a motor M different from a loom drive motor (not shown). Driven. The weft yarn fed from the thread winding tube 2a as the thread winding tube 2a rotates is controlled to be pulled out from the thread winding surface 2b by the retracting operation of the locking pin 3a driven by the electromagnetic solenoid 3. Electromagnetic solenoid 3
Is supported on a convergent guide tube 5, and a yarn breakage sensor 4 composed of a transmission type photoelectric sensor is installed near the inner end of the weft introduction pipe 2c communicating with the yarn winding pipe 2a.

A blow nozzle 6 is connected to the weft introducing pipe 2c of the weft measuring and storing device 2. A yarn feeding guide nozzle 7 is arranged in the vicinity of the weft introduction pipe 2c, and its jetting direction is in the weft introduction pipe.
It is set to point to the inlet 2d of 2c. The blow nozzle 6 and the yarn feeding guide nozzle 7 are two-way valve type electromagnetic valves.
It is connected to the pressurized air supply tank via V ₅ and V ₄ .

An air cylinder 8 is arranged and fixed laterally between the weft cheeses 1A, 1B, 1C and the yarn feeding guide nozzle 7, and a slider 9 is fixed to the tip of a drive rod 8a thereof. A guide rod 10 is arranged immediately above the air cylinder 8 so as to be parallel to the drive rod 8a and penetrate the slider 9. The slider 9 is slidable with respect to the guide rod 10, and an air cylinder 11 is supported on the slider 9.
The drive rod 11a of the air cylinder 11 is parallel to the guide rod 10. Each of the air cylinders 8 and 11 is connected to the pressurized air supply tank via three-way valve type electromagnetic valves V ₁ and V ₂ .

The drive rod 11a of the air cylinder 11 has three tensors 12
A, 12B, 12C are fixed. Stand for each tensor 12A, 12B, 12C
The guide rod 10 is inserted through the guide rod 12a, and each pedestal 12a has a tensor 12A, 12A in a slidable relationship with the guide rod 10.
B, 12C, a pair of thread guides 12b, 12 supported in front of and behind the base 12a
c, and two leaf springs 12d and 12e in a joined state fixed to the base 12a between the yarn guides 12b and 12c. The weft ya drawn from the weft cheese 1A is the double thread guide 12 of the tensor 12A.
It is passed through b and 12c and is sandwiched between the leaf springs 12d and 12e. Similarly, weft Yb of weft cheese 1B is tenser 12B.
The weft Yc of the weft cheese 1C is inserted and sandwiched in the tenser 12C.

In the state shown in FIG. 1, the weft ya of the weft cheese 12A is passed through the weft guide nozzle 7 to the weft measuring and storing device 2, and the weft ya drawn from the weft cheese 1A is the tensa 12A.
Moderate tension is given by. Make sure that the tips of the remaining wefts Yb and Yc extend slightly from the thread guide 12c.
It is passed through B and 12C.

An air cylinder 13 is arranged downward just above the front area of the inlet 7a of the yarn feeding guide nozzle 7.
The sharp release pin 13a that constitutes the release means by the operation of
Is switched between the retracted position shown by the solid line in FIG. 2 and the release position shown by the chain line in FIG. The ethialinda 13 is connected to the pressurized air supply tank via a _three- way valve type electromagnetic valve V ₃ .

The blow nozzle 14 and the suction pipe 15 are arranged opposite to each other with the area immediately in front of the convergent guide tube 5 interposed therebetween. The suction pipe 15 is close to the suction port of the blower 16, and the blower 16 and the suction pipe
A cutter 18 driven by an air cylinder 17 is interposed between the cutter 15 and the cylinder 15. The blow nozzle 14 is connected to a pressurized air supply tank via a two-way valve type electromagnetic valve V ₆ , and the air cylinder 17 is connected to a pressurized air supply tank via a three-way valve type electromagnetic valve V ₇ .

A transfer arm 19 is rotatably supported by a motor 20 near the suction pipe 15, and a weft yarn detector 21 composed of a transmission type photoelectric sensor is attached to a tip end hook portion of the transfer arm 19. The leading end hook portion of the transfer arm 19 rotates between the solid line position and the chain line position in FIG. 6 to sweep near the suction port of the suction pipe 15 and come close to the inlet of the weft inserting main nozzle 22.

A thread break sensor 23, which is a transmission type photoelectric sensor, is installed in the inlet of the weft-insertion main nozzle 22, and a fixed blade 22a is fixed to the upper end of the weft-insertion main nozzle 22. An introduction duct 24 and a blow nozzle 25 are vertically opposed to each other with the jetting region of the weft insertion main nozzle 22 interposed therebetween, and an air guide 26 and a suction pipe 27 are arranged behind the outlet of the introduction duct 24. A weft yarn detector 28 consisting of a transmission type photoelectric sensor is installed in the air guide 26, and a blow nozzle for producing an ejector action is provided in the suction pipe 27.
27a is connected.

The weft insertion main nozzle 22, the introduction duct 24, the blow nozzle 25, the air guide 26, and the suction pipe 27 are all mounted on the sley, and the swing regions of these respective members 22, 24, 25, 26, 27 are A take-up motor 29 and an air cylinder 30 at the rear
Is installed. The take-up motor 29 has a drive roller 29
A is operatively connected, and a driven roller 30a is attached to the air cylinder 30, and the rollers 29a and 30a are brought into pressure contact between the introduction duct 24 and the air guide 26 by the protruding operation of the air cylinder 30.

Weft main nozzle 22 and the blow nozzle 25,27a for insertion via the solenoid valve V _8, V _9, V ₁₀ of both two-way valve type, the air cylinder 30 through the electromagnetic valve V ₁₁ of the three-way valve-type pressure It is connected to the air supply tank. As shown in FIG. 7, the electromagnetic valves V _{1 to} V ₁₁ , the motors M, 20, 29, the blower 16 and the electromagnetic solenoid 3 are commanded by a control computer C which is different from the loom control computer. The control computer C determines the electromagnetic valves V _{1 to} V ₁₁ , the motors M, 20, 29, and the blower based on the detection information from the yarn breakage sensors 4, 23 and the weft yarn detectors 21, 28.
16 and electromagnetic solenoid 3 are controlled.

The flow charts of Figures 8 (a)-(d) are weft cheese.
A yarn feeding process program when a yarn breakage occurs between 1A, 1B, 1C and the weft measuring and storing device 2 will be described, and the yarn feeding process will be described below with reference to this flowchart.

FIGS. 1 and 3 show the weft supply state of the weft yarn Ya drawn from the weft yarn cheese 1A during the operation of the loom, and the yarn guide 12c of the tensor 12A faces the inlet 7a of the yarn supply guide nozzle 7. That is, an electromagnetic valve that controls the supply of compressed air to both air cylinders 8 and 11.
Both V ₁ and V ₂ are demagnetized.

When the weft yarn Ya is cut on the yarn feeding path between the weft cheese 1A and the weft measuring and storing device 2, the yarn breakage sensor 4 detects this yarn breakage and the yarn feeding error detection information is sent to the control computer C. The control computer C sends a loom stop signal to the loom control computer based on the yarn feeding error detection information, and the loom control computer outputs a loom stop command in response to this signal. This allows the main nozzle for weft insertion on the sley.
22 stops near the cloth fell position. After the machine is stopped, the control computer C commands the excitation of the electromagnetic valve V ₉ and the electromagnetic solenoid 3. As a result, the blow nozzle 25 jets and the locking pin 3a separates from the bobbin winding surface 2b. The control computer C then energizes the solenoid valve V ₈ . As a result, the weft-insertion main nozzle 22 is jetted, and the bobbin winding surface 2b
If there is a winding residual thread on the upper side, this winding residual thread is ejected from the weft inserting main nozzle 22. As shown by the chain line in FIG. 3, this injection residual yarn Ya ′ is blown into the introduction duct 24 by the jetting action of the blow nozzle 25, and the weft yarn detector in the air guide 26.
Reach 28 installation positions.

The control computer C degausses the control valves V ₈ and V ₉ based on the yarn presence information from the weft yarn detector 28 and energizes the electromagnetic valve V ₁₁ . This allows the weft insertion main nozzle 22
And the injection of the blow nozzle 25 is stopped, and the roller pair 29a, 30a
Join together. Next, the control computer C uses the electromagnetic valve.
Exciting V ₁₀ and operating the take-up motor 29.
As a result, the residual yarn Ya ′ is drawn by the roller pair 29a, 30a and is sucked into the suction pipe 27. When all the remaining yarns Ya 'pass between the roller pairs 29a, 30a, the control computer C stops the operation of the take-up motor 29 based on the yarn non-detection information from the weft yarn detector 28, and the electromagnetic valve V ₁₁ ,
Command the demagnetization of V ₁₀ . As a result, the ejection of the blow nozzle 27a is stopped and the roller pairs 29a, 30a are separated from each other.

If there is no winding residual thread on the thread winding surface 2b, weft detector 28
Does not detect the presence of yarn, and the control computer C proceeds to the following yarn supply process after the winding residual yarn process when the yarn presence detection information cannot be obtained within a predetermined time.

The control computer C operates the blower 16 and energizes the electromagnetic valves V ₅ and V ₆ . This allows the blow nozzle 6
Is injected, an air flow is generated between the blow nozzle 14 and the suction pipe 15. The jet flow from the blow nozzle 6 blows out from the bobbin winding tube 2a into the convergent guide tube 5, and the blow nozzle 14
And the suction pipe 15 join together. The control computer C then energizes the electromagnetic valve V ₄ . Thereby, the yarn feeding guide nozzle 7 jets for a predetermined time. If the cut end of the broken weft yarn Ya is inside the yarn feeding guide nozzle 7, this cut end is inserted into the weft introduction pipe 2c, and the yarn break sensor 4 outputs yarn presence detection information.

The control computer C knows the excitation / demagnetization state of the electromagnetic valves V ₁ and V ₂ , and when the thread breakage sensor 4 cannot obtain the thread presence detection information within a predetermined time, it excites the electromagnetic valves V ₁ and V ₂ . Switch degauss. 1 and 5 (a), weft
Ya is used, both electromagnetic valves V ₁ and V ₂ are in a demagnetized state, and the tensor 12A is arranged at a yarn feeding position facing the yarn feeding guide nozzle 7 directly below the air cylinder 13.
In Fig. 5 (b), weft Yb is used and the electromagnetic valve
Only V ₂ is in the excited state and the tenser 12B is arranged at the yarn feeding position. In FIG. 5 (C), the weft yarn Yc is used, both electromagnetic valves V ₁ and V ₂ are in the excited state, and the tensor 12C is arranged at the yarn feeding position directly below the air cylinder 13.

When a yarn feeding error occurs in the state of FIG. 5 (a), the control computer C energizes the electromagnetic valve V ₂ . As a result, the drive rod 11a of the air cylinder 11 projects, and the tenser 12B is switched to the yarn feeding position as shown in FIG. 5 (b). The joint position of both leaf springs 12d and 12e of the tensor 12B is arranged immediately below the release pin 13a of the air cylinder 13, and the yarn guide 12c of the tensor 12B is located at the inlet of the yarn feeding guide nozzle 7.
Face 7a. The control computer C then energizes the electromagnetic valve V ₃ . This causes the release pin 13a to move the leaf springs 12
The leaf springs 12d and 12e are released from the joints by protruding toward the joint positions of d and 12e. The leading end of the weft Yb held between the leaf springs 12d and 12e is released from this joint to release the leaf springs 12d and 12e.
The clamping action of e is released.

Under the condition that the tip of the weft Yb is released from the gripping action of the tensor 12B, the control computer C causes the electromagnetic valve V ₄
Is excited for a predetermined time. As a result, the yarn feeding guide nozzle 7 jets for a predetermined time, and this jetting action causes a suction action at the inlet 7a. The tip of the weft yarn Yb, which extends slightly from the yarn guide 12c of the tenser 12B, is sucked by the yarn feeding guide nozzle 7 by this suction action.
The weft introduction pipe 2c of the weft measuring and storing device 2 which is sucked into the inside
Is blown into. Since the weft Yb is released from the grip of the tensor 12B, the weft Yb can be easily pulled out from the tensor 12B, and threading to the weft measuring and storing device 2 is reliable.

When a yarn feeding error occurs in the state of FIG. 5 (b), the control computer C energizes the electromagnetic valve V ₁ . As a result, the tenser 12C moves to the yarn feeding position, and the weft yarn Yc is inserted into the weft yarn introducing tube 2c by the yarn feeding guide nozzle 7. Fifth
When a yarn feeding error occurs in the state of FIG. 7C, the control computer C demagnetizes the electromagnetic valves V ₁ and V ₂ . As a result, the tensor 12A moves to the yarn feeding position, and the weft Ya is inserted into the weft introduction tube 2c.

The weft Yb blown into the weft introduction pipe 2c is blown out from the yarn winding pipe 2a by the jetting action of the blow nozzle 6 and passed through the weft measuring and storing device 2. Weft for weft measuring and storing device 2
If the threading of Yb is successful, the thread breakage sensor 4 outputs the thread presence detection information. The control computer C switches the tenser 12C to the yarn feeding position when the yarn presence detection information cannot be obtained within a predetermined time, and thread the weft Yc. When the yarn presence detection information is not obtained even if the facing switching between the tensor and the yarn feeding guide nozzle 7 is performed twice, the control computer C stops the operation of the blower 16, the electromagnetic solenoid 3 and the electromagnetic valve.
The demagnetization of V ₃ , V ₅ , and V ₆ is instructed, and an alarm is issued to the alarm device 31.

When the threading of the weft Yb into the weft measuring and storing device 2 is successful, the control computer C demagnetizes the electromagnetic valve V ₃ after a predetermined time has elapsed after the thread presence detection information from the thread break sensor 4 is obtained. As a result, the release pin 13a retracts to the retracted position, and the leaf springs 12d and 12e of the tensor 12B hold the weft Yb. In addition, demagnetize the electromagnetic solenoid 3 and the electromagnetic valves V ₅ and V ₆ , and lock the pin 3a.
Engages with the bobbin winding surface 2b, and the ejection of the blow nozzles 6 and 14 stops.

The weft Yb blown out from the bobbin 2a reaches the air flow between the blow nozzle 14 and the suction pipe 15 by the converging action of the converging guide tube 5, and is sucked into the suction pipe 15. Weft Yb
Is gripped by the tensor 12B, so the suction pipe 1
An appropriate tension is applied to the weft Yb by the suction action of 5.

The control computer C rotates the motor M by a predetermined amount while the weft Yb is suctioned and gripped by the suction pipe 15.
As a result, the weft yarn Yb is pre-wound by a predetermined amount on the yarn winding surface 2b. After this preliminary winding, the control computer C causes the electromagnetic valve V ₇
Demagnetize. As a result, the cutter 18 performs a cutting operation, and the weft Yb is cut into a predetermined length. Then the motor
20 is rotated by a predetermined amount, and the transfer arm 19 is pivotally arranged from the solid line position in FIG. 6 to the chain line position. When the weft yarn Yb is hooked on the tip end hook portion of the transfer arm 19 by this rotating operation, the weft yarn detector 21 outputs the yarn presence detection information. When the control computer C cannot obtain the yarn presence detection information from the weft yarn detector 21 within a predetermined time, it stops the operation of the blower 16, reversely operates the motor 20, and outputs an alarm command to the alarm device 31.

When the thread presence detection information is obtained, the electromagnetic solenoid 3 is excited and the locking pin 3a is separated from the thread winding surface 2b. or,
The electromagnetic valves V ₉ and V ₈ are excited, and the blow nozzle 25 and the weft inserting main nozzle 22 eject. The weft Yb hooked by the transfer arm 19 is transferred and arranged in the vicinity of the inlet of the weft-insertion main nozzle 22, and is introduced into the weft-insertion main nozzle 22 by the suction action of the weft-insertion main nozzle 22 and at the same time. It is ejected from the main nozzle 22. The weft Yb ejected from the weft insertion main nozzle 22 is blow nozzle 25.
The control computer C demagnetizes the electromagnetic solenoid 3 and the electromagnetic valves V ₉ and V ₈ based on the yarn presence detection information from the weft detector 28 and stops the operation of the blower 16 by the jetting action of . If the yarn presence detection information cannot be obtained, an alarm command is output to the alarm device 31.

When the thread presence detection information is obtained, the control computer C
Excites the solenoid valve V ₁₁ . As a result, the drive roller 29a
And the driven roller 30a are joined, and the weft yarn Yb is attached to both rollers 29a, 30a.
Is caught in between. Under this gripped state, the motor M rotates a predetermined amount, and the weft Yb is pre-wound on the yarn winding surface 2b by a predetermined amount.

After this preliminary winding, the electromagnetic valve V ₁₀ is excited and
The take-up motor 29 operates, and the weft Yb is drawn and sucked by the suction pipe 27. This take-up tension causes weft
Yb is cut and separated by the fixed blade 22a on the main weft inserting nozzle 22. When all the cut and separated yarns pass the installation position of the weft detector 28, the weft detector 28 outputs the yarn non-detection information,
The control computer C commands the operation stop of the take-up motor 29 and the demagnetization of the electromagnetic valves V ₁₁ and V ₁₀ based on the yarn non-detection information. Then, the machine base rotates and shifts to the start position, and prepares for machine restart.

When the yarn feeding process is completed in this way, a predetermined amount of the weft Yb is pre-wound on the yarn winding surface 2b of the weft length measuring and storage device 2, and the pre-wound is wefted after the operation of the loom is restarted. If the preliminary winding yarn is not wound on the winding surface 2b in an orderly manner, weft insertion failure is likely to occur, which causes weft insertion error. For good pre-winding, the pre-winding may be performed while applying an appropriate tension to the weft Yb. For that purpose, tensors 12A, 12B, 12C are required between the weft cheese and the weft measuring and storing device 2. Becomes In this embodiment, when a yarn feeding error occurs, the unused weft tenser is switched to the inlet 7a of the yarn feeding guide nozzle 7 so as to face it, and when the yarn feeding guide nozzle 7 is jetted, a new weft yarn is measured. It is passed through the long storage device 2. In this way, the thread winding surface 2 is applied under the proper tension of the tensors 12A, 12B, 12C.
The weft is wound on b and pre-winding is performed well. As a result, the preliminary winding yarn is wound on the winding surface 2b in an orderly manner,
Good weft insertion is performed.

Such tensors 12A, 12B, 12C are also necessary to prevent unnecessary weft pulling out from the weft cheese when the loom is stopped. Without the tensors 12A, 12B, and 12C, the weft is pulled out excessively due to inertia when the loom is stopped,
When the loom is restarted, the wound yarn storage state on the yarn winding surface 2b becomes poor, and weft insertion errors are likely to occur.

In the present invention, the weft threads are passed through the tensors 12A, 12B, 12C in advance, and the tensors 12A, 12B, 12C and the yarn feeding guide nozzle 7 are arranged so as to face each other, so that the threaders are automatically threaded. Very difficult treatments can be avoided, which makes it possible to pre-wind the weft well and to avoid unnecessary withdrawal of the weft from the weft cheese.

Of course, the present invention is not limited to the above-mentioned embodiment. For example, as shown in FIGS. 9 (a) and 9 (b), the turntable 32a above the yarn feeding stand 32 is rotated by the motor 33,
An embodiment in which a plurality of weft cheeses 1A, 1B, 1C, 1D and the respective tensors 12A, 12B, 12C, 12D on the turntable 32a are switched to positions facing the yarn feeding guide nozzle 7 is also possible. In this embodiment, weft cheese 1A, 1B, 1C, 1D and tenser 12
A, 12B, 12C and 12D are always in the optimal arrangement positional relationship, and the weft yarns are extracted from the weft cheeses 1A, 1B, 1C and 1D in the optimum state.

In each of the above-described embodiments, the weft holding state by the tensor is released by the release pin 13a. However, by appropriately increasing the injection pressure in the yarn feeding guide nozzle 7, the threading can be performed in the holding state by the tenser. Can be done.

In each of the above-mentioned embodiments, the tensor side is switched so that the inlet 7a of the yarn feeding guide nozzle 7 and the yarn guide 12c are switched and face each other. As shown in FIG.
A, 12B, 12C are arranged in a fan shape, and the yarn feeding guide nozzle 7 is connected to the motor 3
The yarn guide 12c of the tensors 12A, 12B, 12C and the inlet 7a of the yarn feeding guide nozzle 7 may be switched by turning at 4 so as to face each other. The configuration in which the yarn feeding guide nozzle 7 side is switched and arranged leads to a reduction in space of the entire apparatus.

Further, in this embodiment, an air gripping type tensor can be adopted instead of the mechanical gripping type tensor.

[Effects of the Invention] As described in detail above, according to the present invention, when a yarn feeding error occurs, the yarn of the tenser is moved by moving one of the same number of tensors as one of the plurality of weft cheeses and one yarn feeding guide nozzle. Since the delivery port and the inlet of the yarn feeding guide nozzle can be switched to face each other, and the tension imparting to the weft yarn of the tensor can be temporarily released by the releasing means, the following effects can be obtained.
That is, in spite of the presence of the tensor, the threading to the winding type weft measuring and storing device is reliably performed automatically, and the preliminary winding of the weft thread on the thread winding surface that influences the weft insertion state is well performed. It has an excellent effect that it can be performed.

[Brief description of drawings]

1 to 8 show an embodiment embodying the present invention.
FIG. 2 is a plan sectional view showing a yarn feeding guide state during operation of a loom, FIG. 2 is a rear view of a main part, FIG. 3 is a front sectional view in the same state as FIG. 1,
FIG. 4 is a perspective view of a main part, FIGS. 5 (a), (b), and (c) are front views of the main part, and FIG. 6 is a front view showing a state in which a weft is passed through a weft measuring and storing device. Fig. 7 is a block diagram, Figs. 8 (a) to 8 (d) are flowcharts showing a yarn feeding processing program, and Fig. 9 (a) is a plan view of a main part showing another example, ninth.
FIG. 10B is a front view of the main part, and FIG. 10 is a plan sectional view of the main part showing another example. Weft measuring and storing device 2, yarn feeding guide nozzle 7, inlet 7a, tensors 12A, 12B, 12C, yarn guide 12c that serves as a yarn delivery port, air cylinders 8 and 11 that form facing switching means, and release that constitutes releasing means. Pin 13a.

Claims (1)

(57) [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. , The same number of tensors as the plurality of weft cheeses for individually applying tension to the wefts drawn from the plurality of weft cheeses and supplied to the weft measurement storage device, and measuring the wefts passing through the tensors The yarn feeding guide nozzle for inserting into the weft yarn introducing portion of the storage device and either one of the plurality of tensors and the yarn feeding guide nozzle are moved to switch the yarn feeding port of the tensor and the inlet of the yarn feeding guide nozzle to face each other. A yarn feeding apparatus in a jet loom, which is configured by opposing switching means for causing the weft yarn to be released from the tensioner and releasing means for temporarily releasing the tension applied to the weft yarn.