JPH0634384Y2 - Threading device in weft measuring and storing device of loom - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention relates to winding for controlling the weft length measurement storage and the weft withdrawing from the winding surface by the engagement and disengagement action of the winding surface and the weft locking body. The present invention relates to a mechanism for threading a yarn from a yarn winding tube between a yarn winding surface and a balloon restraining ring of a weft measuring and storing device of a system.

(Prior Art) As a device for threading a weft measuring and storing device of a winding type to a main nozzle for weft insertion, there are those disclosed in JP-A-60-2749 and JP-A-61-142886. . JP 60
In the publication No. 2749, a guide nozzle having suction and injection functions is installed between the weft measuring and storing device and the main weft inserting nozzle, and the guide nozzle is switched between a standby position and an operating position near the winding surface. The cutting end portion of the weft yarn cut between the weft measuring and storing device and the guide nozzle is introduced into the guide nozzle by the suction guiding action of the guide suction pipe.

(Problems to be solved by the invention) However, the guide suction pipe that sucks the weft cutting end portion on the bobbin winding surface and conveys it to the guide nozzle at the operating position near the bobbin winding surface is provided with the guide nozzle from the vicinity of the bobbin winding surface. If there is a ring that straddles the introduction port and restrains the balloon of the weft yarn drawn from the yarn winding surface, the yarn cannot be passed between the yarn winding surface and the balloon restraining ring. Further, in this conventional device, there is no device for inserting the weft into the yarn introduction port communicating with the yarn winding tube of the weft measuring and storing device, and it is not easy to thread the weft measuring and storing device.

In Japanese Utility Model Laid-Open No. 61-142886, the balloon restraining ring is provided with a slit in the weft pulling direction, and the weft yarn is inserted from the outside to the inside of the balloon restraining ring through this slit. ing. Moreover, there is no device for inserting the weft into the weft measuring and storing device, and the complexity of the threading operation on the side of the weft measuring and storing device and the main nozzle for weft insertion cannot be eliminated.

An object of the present invention is to provide a threading mechanism that can automatically perform threading operation from the weft measuring and storing device to the main nozzle side for weft insertion even if there is a balloon restraining ring. To do.

(Means for Solving the Problem) Therefore, in the present invention, the engagement and disengagement action of the bobbin winding surface and the weft locking body controls the length measurement storage of the weft and the weft withdrawal from the bobbin winding surface to control the weft winding surface. In a weft measuring and storing device of a winding type that supplies the weft yarn on the yarn winding surface to the side of the main nozzle for weft insertion from between the balloon restraining ring, the weft measuring length storage device is provided outside the yarn introducing port of the rotary support tube and the yarn winding surface. A threading device configured to communicate with a thread winding tube having an outlet, the balloon restraining ring having a size substantially the same as the thread winding surface, and blowing the weft end into the thread introduction port of the rotary support tube. A nozzle is provided, and a guide groove is provided on the outer periphery of the bobbin winding surface so as to face the bobbin winding tube outlet that always stops at a predetermined position and to be directed to the space between the bobbin winding surface and the balloon restraining ring. Is.

(Operation) When the front end of the weft thread is inserted into the threading nozzle, the front end of the weft thread is blown out from the thread winding tube through the thread introduction port by the jetting action of the threading nozzle. The fluid ejected from the threading nozzle is blown out in the direction of the bobbin winding tube, and this blowing flow is automatically guided and converted between the bobbin winding surface and the balloon restraining ring in one operation by the guiding action of the guide groove. . Therefore, the tip of the weft yarn conveyed by the blowing flow is guided and inserted between the yarn winding surface and the balloon restraining ring.

(Embodiment) An embodiment embodying the present invention will be described below with reference to the drawings.

Reference numeral 1 is a bobbin winding motor independent of a machine base drive motor, and a rotary support tube 3 supported by a support ring 2 is operatively connected via a timing belt 4. Rotating support tube 3
A yarn winding pipe 5 having an outlet 5a is obliquely connected to the outside of the yarn winding surface 6a of the drum 6, and the outlet 5a and the rotation support pipe 3 are connected to each other.
The thread winding port 3a communicates with the thread winding port 3a, and the thread winding tube 5 is rotated integrally with the rotation support tube 3 by the operation of the thread winding motor 1. A drum 6 is supported on the tip of the rotary support tube 3 so as to be relatively rotatable, and a cover 7 fixed to the support ring 2 is attached.
The magnet 6 on the side of the drum 6 and the magnet 9 on the side of the drum 6 hold the drum 6 at a fixed position with respect to the cover 7. Therefore, the weft yarn Y passed through the rotary support tube 3 and the thread winding tube 5
Is supplied around the bobbin winding surface 6a by the rotation of the bobbin winding tube 5.

An electromagnetic solenoid 10 is installed below the bobbin winding surface 6a of the drum 6, and the weft thread locking body 10a is separated from the thread winding surface 6a by the excitation of the electromagnetic solenoid 10 and the weft thread locking body 10a is demagnetized. It intersects the bobbin winding surface 6a. As a result, the winding measurement storage of the weft Y and the withdrawal of the yarn from the yarn winding surface 6a are controlled. A balloon restraining ring 11 is installed in front of the drum 6, and a projector 12 and a light receiver 13 for detecting a weft pull-out and unwinding are provided opposite to each other on the inner circumference of the balloon restraining ring 11.

A threading nozzle 14 is installed in the vicinity of the introduction port 3a of the rotary support tube 3, and the jetting direction of the threading nozzle 14 is set to be directed to the introduction port 3a of the rotation support tube 3. The threading nozzle 14 is connected to a pressure air supply source (not shown) via a flow rate adjusting valve 15 and a manual switching valve 16 and is rotated from the threading nozzle 14 by turning on a push button 16a of the switching valve 16. Pressure air is jetted into the support tube 3.

A guide body 17 is installed on the upper part of the cover 7, and a guide groove 17a is provided on the inner surface side thereof. The guide groove 17a constantly stops at a predetermined position along the outer circumference of the thread winding surface 6a. Facing the outlet 5a and pointing the space between the bobbin winding surface 6a and the balloon control ring 11. A direction changing nozzle 18 is installed on the introduction side of the guide groove 17a, and the ejection direction thereof is set so as to be directed along the guide groove 17a. The direction changing nozzle 18 is connected to the switching valve 16 via a flow rate adjusting valve 21. A reflection type photoelectric sensor 19 is installed on the inner surface of the cover 7 behind the guide groove 17a, and the yarn winding tube 5 coming to a position facing the guide groove 17a is detected by the photoelectric sensor 19. .

The detection signal from the photoelectric sensor 19 is sent to the control computer C, and the control computer C commands the operation of the bobbin winding motor 1 based on the ON signal from the push button 20, and only when this ON signal is input, the bobbin winding tube 5 Based on the detection signal, an instruction to stop the operation of the bobbin winding motor 1 is issued. During normal operation, the control computer C commands the operation of the bobbin winding motor 1 in synchronization with the command from the machine base control computer. Further, the control computer C commands the excitation of the electromagnetic solenoid 10 at a predetermined time, and commands the demagnetization of the electromagnetic solenoid 10 when the number of weft pull-out unwind detection signals from the light receiver 13 reaches a set value.

Threading to the weft measuring and storing device is performed by first turning on the push button 20. When the push button 20 is turned on, the control computer C commands the operation of the bobbin winding motor 1,
The spooled tube 5 rotates around the drum 6. When the bobbin winding tube 5 comes to a position facing the guide groove 17a, the photoelectric sensor 19 detects it, and this detection signal is sent to the control computer C. Based on this detection, the control computer C issues an instruction to stop the operation of the bobbin winding motor 1, and the bobbin winding tube 5 stops at a position facing the guide groove 17a. Next, with the tip of the weft Y inserted into the inlet of the threading nozzle 14, the switching valve
When the push button 16a of 16 is pushed, the tip of the weft Y is inserted into the introduction port 3a of the rotary support tube 3 by the suction action and the jet action of the threading nozzle 14. The jet flow from the bobbin winding motor 1 is jetted from the bobbin winder tube 5 via the rotary support tube 3, and the tip of the weft Y conveyed by this jet flow is blown out from the outlet of the bobbin winder tube 5.

The air flow ejected from the outlet of the bobbin tube 5 merges with the jet flow from the direction changing nozzle 18 by the guide action of the guide groove 17a of the guide body 17, and is guided in the guide groove 17a. Therefore, the tip of the weft yarn Y is guided from the direction of the yarn winding tube 5 to the weft yarn withdrawing direction and guided into the balloon restraining ring 11. As a result, the tip of the weft yarn Y is passed from the space between the yarn winding surface 6a and the inner circumference of the balloon restraining ring 11 toward the main nozzle for weft insertion (not shown). The threading and the threading from the weft measuring and storing device to the side of the main nozzle for weft insertion are extremely simple.

Of course, the present invention is not limited to the above-mentioned embodiment, and for example, even if the direction-changing nozzle 18 in the above-mentioned embodiment is omitted, the weft-direction changing action from the yarn winding tube 5 to the inside of the balloon restraining ring 11 is a guide groove. It can be sufficiently achieved by only 17a. Further, by automating the moving arrangement of the bobbin winding tube 5 to the position facing the guide groove 17a and the switching operation of the switching valve 16, the weft measuring storage device from the weft cheese, and the weft measuring storage device to the weft insertion main device. It is possible to automate the yarn feeding mistake processing such as threading through the nozzle.

(Effect of the Invention) As described in detail above, the present invention divides the fluid flow, which is ejected from the threading nozzle toward the inlet of the weft measuring and storing device and is blown out from the thread winding tube, into the inside of the balloon suppression ring. Since the weft is conveyed by the jet flow from the threading nozzle, the tip of the weft is easily inserted inside the balloon restraining ring, and the side of the main nozzle for weft insertion and weft insertion into the weft measuring and storing device. It has an excellent effect that threading can be automatically performed extremely easily.

[Brief description of drawings]

The drawing is a side sectional view showing an embodiment embodying the present invention. Introducing port 3a, bobbin winding tube 5, bobbin winding surface 6a, balloon restraining ring 11, threading nozzle 14, switching valve 16, guide body 17, guide groove 17a, direction changing nozzle 18, weft Y.

Claims (1)

[Scope of utility model registration request] Claim: What is claimed is: 1. An engagement / disengagement action between a bobbin winding surface and a weft locking body controls the length measurement storage of the weft and withdrawal of the weft from the bobbin winding surface so that the bobbin winding surface is between the bobbin winding surface and the balloon restraining ring. In a weft measuring and storing device of a winding type that supplies the upper weft to a main nozzle side for weft insertion, a yarn introducing port of a rotary support pipe and a yarn winding pipe having an outlet outside the yarn winding surface are communicated with each other. And the balloon restraining ring is formed to have substantially the same size as the thread winding surface, and a threading nozzle for blowing the weft tip is provided in the thread introduction port of the rotary support tube, and the outer circumference of the thread winding surface. A threading device in a weft measuring and storing device of a loom, which is provided with a guide groove facing a yarn winding tube outlet that always stops at a predetermined position and directed to a space between the yarn winding surface and a balloon restraining ring. .