KR830000799B1 - How to supply auxiliary nozzle of jet loom - Google Patents

Abstract

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Description

How to supply auxiliary nozzle of jet loom

1 is a partially omitted perspective view showing an example of a jet loom used in the present invention.

2 is a right side view of FIG.

3 is a longitudinal sectional view showing a first embodiment of the device of the present invention.

4 is a cross-sectional view taken along the line A-A of FIG.

5 is a perspective view of only the on-off valve of the first embodiment of the apparatus of the present invention.

6 is an explanatory diagram of the operation timing of the auxiliary nozzle of the first embodiment of the present invention.

7 is a longitudinal sectional view showing a second embodiment of the device of the present invention.

8 is a right side view of a second embodiment of the apparatus of the present invention.

9 is a sectional view taken along the line B-B in FIG.

10 is an explanatory diagram of another operation timing of an auxiliary nozzle;

The present invention relates to a method for supplying an auxiliary nozzle in a jet loom in which a weft thread is inserted by using a compressed air jet stream.

In general, in an air loom in which weft yarns are inserted by air injection streams between the inclined openings, the air injection streams of the main nozzles cannot fly the weft yarns far enough at a sufficient speed. For this reason, an appropriate number of auxiliary nozzles are installed on the body frame, and a device for cooperating with main injection is used. However, since the amount of air ejected from a large number of auxiliary nozzles increases considerably, each auxiliary nozzle or a plurality of auxiliary nozzle groups is provided with a weft thread. In order to save injection flows, a subsidiary nozzle air supply device (Public Service 49-12142) has been proposed.

)를 천천히 운전시키면 위사는 주노즐에 의하여 정상운전 상태와 동일한 고속으로 북입구내에 분출되나 직기가 계속하여 운전되지 않으므로 보조노즐의 분사 타이밍이 위사의 비주 타이밍보다 늦어져서 보조노즐의 분사효과가 격감하고, 따라서 위사의 속도가 급속하게 떨어지고 도중에서 정지한다든가, 보조노즐에 걸린다든가 하여, 위사를 넣을 때 미스가 생긴다는 결점이 있었다.In the conventional apparatus, however, the auxiliary nozzles are sequentially sprayed in synchronism with the weaving timing of the loom. Therefore, when the weaving starts at a low speed until a certain degree of transition or when the weft is cut off. In case of maintenance, when seeing a drum pass at the time of re-operation, when the trouble occurs again, when checking the position before weaving, etc., or when it is necessary to see the status in one-peak motion,

) When the weaving machine is operated slowly, the weft is ejected into the north entrance by the main nozzle at the same high speed as the normal operation state, but the loom is not operated continuously. Therefore, there is a drawback that the weft speed drops rapidly and stops in the middle, or is caught by the auxiliary nozzle, and a miss occurs when the weft is inserted.

It is an object of the present invention to set the timing of spraying the auxiliary nozzles at the same time during the operation of the auxiliary nozzles, weaving the weft even when driving the loom slowly when weaving is started by simultaneously generating airflow over the entire length of the weft passage in the reservoir. An object of the present invention is to provide a method for supplying an auxiliary nozzle in a jet loom that can be reliably inserted.

1 to 6 illustrate a first embodiment of the present invention, 1 is a body having a guide (1a) installed on the frame 2, 3 is the side of the body (1) The weft yarn, which has been placed in the main nozzle and is inserted in advance into the main nozzle connected to the air supply of the base (not shown), into the reservoir (between the guide 1a) formed by the warp Y and the body 1 with the injection of high pressure air. It is supposed to be.

N is a plurality of auxiliary nozzles installed at equal intervals on the body frame (2), the upper end thereof is drawn near the guide (1a) to inject air in the non-circumferential direction of the weft yarns between the guide (1a) It is supposed to help the weirs.

By the way, although the auxiliary nozzles N are provided at least 10 per one loom, in the embodiment of the present invention, a method of supplying eight auxiliary nozzles for convenience will be described with reference to FIGS. 3 to 6.

4 is an elongated, four-cylindrical type exhaust casing in which a cylindrical exhaust chamber F is formed in the axial direction fixed to the base, and the pipe P connected to an air supply source (not shown) installed separately is exhausted. It is connected to the center bottom of the chamber F, and compressed air can be pressurized in this exhaust chamber F. As shown in FIG. 5 is eight passages installed in the up and down direction so as to communicate with the exhaust chamber F with respect to the upper part of the casing 4, and are arranged in the same direction in the longitudinal direction (only four are shown in this embodiment). P ₁ to P ₈ are the first to eighth pipes (the present embodiment communicating the base ends to the passages 5 and the tip ends to the eight auxiliary nozzles N ₁ to N ₈ , respectively). Only four are shown).

6 is a rotation shaft inserted in the axial direction in the exhaust chamber F of the casing 4, the gear 7 is mounted on the outer end thereof, the gear 7 is rotated at a constant speed in synchronization with the loom operation timing of the loom. It is supposed to be.

8A and 8B are a pair of open / close valves that are fitted on the rotary shaft 6, and one open / close valve 8A is rotatably installed in the substantially right half of the exhaust chamber F. Similarly, the on-off valve 8B is rotatably provided in the left half portion, and compressed air is supplied from the conduit P between the gaps L of both on-off valves 8A and 8B.

9a and 9b are a single-type air supply pit which is contemplated to be left at the outer end in parallel with the axial direction with respect to the outer periphery of the two open / close valves 8A and 8B. Is rotated so that the air supply pits 9a, 9b and the passage 5 communicate with each other when the air supply pits 9a, 9b are moved to the upper portion of the exhaust chamber F. Accordingly, both on / off valves 8A, 8B Compressed air pressurized in the interval L of the s) is supplied to the first to eighth pipelines P ₁ to P ₈ via the pits 9a and 9b and the passages 5 to supply the first to eighth auxiliary nozzles. It is made to be sprayed from (N ₁ to N ₈ ) in unison.

10 is a first air supply pit provided to communicate with the right end of the air supply pit 9a with respect to the outer circumference of the opening / closing valve 8A in the circumferential direction and to correspond to the passage 5 of the first pipe line P ₁ . Even after the valves 8A and 8B have been rotated to complete the injection of the pre-auxiliary nozzles N ₁ to N8, the compressed air is supplied to the first pipe line P _{1 for a} certain period of time from the first subsidiary nozzle P ₁ . It is supposed to be sprayed.

11 is a second air supply pit provided in a circumferential direction with respect to the outside of the on-off valve 8A and at a position corresponding to the passage 5 of the second conduit P ₂ , wherein the air supply pit 9a and the first air supply In communication with the pit 10, the on-off valve 8A is rotated and the second pipe line P _{2 for a} certain period of time even after the air supply to the first pipe line P ₁ by the first air supply pit 10 is finished. It is possible to supply compressed air.

12 and 13 are third and fourth air supply pit which are similar to the second air supply pit 11 with respect to the outer circumference of the opening / closing valve 8A, respectively, in the third and fourth pipe passages P ₃ and P _4, respectively. Compressed air can be supplied sequentially.

14 to 17 are fifth to eighth air supply pits, which are similar to the first to fourth air supply feet 10 to 13 with respect to the outer circumference of the on / off valve 8B, and are formed by rotation of the on / off valve 8b. Five to eighth pipes (P ₅ to P ₈ ) are sequentially communicated with each other, so that compressed air can be supplied to each of the pipes (P ₅ to P ₈ ) in a sequential order and slightly overlapping.

Next, the operation of the auxiliary nozzle air supply device configured as described above will be described.

6 shows the wefting operation period on the stroke axis X and the arrangement width of each of the auxiliary nozzles N ₁ to N ₈ on the vertical axis T. As shown in FIG.

When the operation of the loom starts, the pressure air is supplied into the exhaust chamber F by opening the pipe line P from the pressure air supply source and increasing the pressure. Then, when the weft threads from the main nozzle (3) to the high-pressure air and at the same time, the weft is in the exhaust chamber (F) by the air supply pit (9a, 9b and 10 to 17) of the opening and closing valves (8A, 8B) rotated. Filled compressed air is blown out from the auxiliary nozzles P ₁ to P ₈ to carry out upswing.

When the indenting operation is now started and the weft yarn starts to run into the reservoir by the compressed air from the main nozzle 3, the inlet-type air supply pit 9a, 9b of the rotating opening / closing valve 8A, 8B is exhausted. (F) is moved upwards and communicates with the first to eighth pipelines P ₁ to P ₈ and the compressed air in the exhaust chamber F is interposed between the first and the eighth auxiliary via the respective pipelines P ₁ to P ₈ . It is supplied to the nozzles N ₁ to N _{8 at the same time} , and an air flow is generated over the entire length of the weft passage in the reservoir. When the inlet operation progresses and the tip of the weft thread reaches the second auxiliary nozzle N ₂ through the vicinity of the first auxiliary nozzle N ₁ , the opening / closing valves 8A and 8B are rotated by a predetermined angle so that the built-in air supply pit ( 9a, 9b) so dropped that from P ₁ to P ₈₎ by gakgwan third to eighth conduit (P ₃ to P _8), the air supply is, but still in the first and second class gift (10, 11) comprises The weft yarn is intact as it is in communication with the first and second pipe passages P ₁ and P ₂ , and thus the weft is taxed by the jet of air injected from the first and second auxiliary nozzles N ₁ and N ₂ .

Again, when the weft thread reaches the third subsidiary nozzle N ₃ from the second subsidiary nozzle N ₂ , the third air supply pit 12 moves to the third pipe line P ₃ by the rotation of the on / off valve 8A. It is in communication with the air, and thus, the air is injected from the third auxiliary nozzle (N ₃ ) and the weft is taxed to the next fourth auxiliary nozzle (N ₄ ). Soon after, the fifth to eighth auxiliary nozzle step by step the air by sequentially continuing from (N ₅ to N ₈₎ spraying in the manner described above, the above live and taxation by the jet stream from the nozzles (N ₅ to N ₈₎ standing It will pass through the inside of the reservoir flexibly.

It is another and hold the injection period of the eighth auxiliary nozzle ₍₈ N), as shown in Figure 6 is to keep a certain degree of tension to the weft yarn to grant baditeul Scene.

As described above, in the first embodiment, the compressed air is initially supplied to the first to eighth auxiliary nozzles N ₁ to N ₈ with respect to the pair of on / off valves 8A and 8B which rotate in time with the operation of the loom. To first and second air supply pit (9a, 9b) for supplying all at once, and at the same time in order to inject air step by step from each of the auxiliary nozzles (N ₁ to N ₈ ) in sequence with the passage of the indentation operation Since the eighth-grade pits 10 to 17 are provided, air flow can be generated in advance in the entire weft passage of the mouth in the initial stage of the indentation operation, and thus, the weft yarns that are arranged by the main nozzles can be flexibly arranged.

In other words, when the auxiliary nozzles N ₁ to N ₈ are sprayed step by step during normal operation, vortices are easily generated locally and the ideal entrainment cannot be achieved. Since it is flowing, it is possible to carry out more flexibility.

In particular, when the weaving start of weaving that drives slowly until a certain amount of cloth is started, when the weft breaks off, the auxiliary nozzles that operate at the same timing as the operation of the loom, such as when the weaving is broken, are delayed, By generating the air flow at the same time can be surely carried out.

Next, the second embodiment of the present invention will be described with reference to FIGS.

This second embodiment omits the integrated air supply pits 9a and 9b of the on-off valves 8A and 8B, and simultaneously transfers the auxiliary auxiliary nozzles N ₁ to N ₈ to different positions of the exhaust casing 4. It differs from the structure of the said 1st Example by the provision of the air supply mechanism for injecting. In addition, the same code | symbol is attached | subjected about the member which has a function similar to the said 1st Example, and description is abbreviate | omitted.

20 is a cylindrical exhaust chamber which is installed in the long-hand direction with respect to the upper edge of the tasting 4, and communicates with the exhaust chamber F by the passage 21 and at the same time through the eight passages 22 by the passage ( N ₁ to N ₈ ), respectively.

23 is a rotation shaft which is inserted into the exhaust chamber 20 and has one end protruded to the outside, and the opening and closing which can open and close the passage 22 at the same position corresponding to the eight passages 22 on the shaft 23. The valve 24 is attached.

25 is an operating arm mounted on the outer end of the rotation shaft 23, a cam follower 26 is mounted at the center thereof, and the coil spring 27 receives a force in the clockwise direction of FIG. It is.

28 is an electromagnet solenoid fixed to the lower portion of the casing (4), 29 is an operation to support the lower end rotatably with respect to the fixed support shaft 30 and to connect the movable iron core 31 of the electromagnet solenoid 28 to the center With the lever, the coil spring 32 receives the force in the clockwise rotation direction of the drafting and at the same time the rotation in the same direction is regulated by the stopper 33 installed at the fixed position. The working arm 25 abuts against the lower end of the working arm 25, and moves the working arm 25 in the counterclockwise rotational direction of FIG. 8 against the elasticity of the coil spring 27 to stop at a predetermined position. 34 is a switch of the electromagnet solenoid 28.

(35) is a cam mounted close to the gear (7) with respect to the rotary shaft (6), it is possible to adjust the mounting position by slowing down the set bolt (36), the cam circumference (35a) of the cam (35) When the cam follower 26 is pressed by the on-off valve 24 of the pivot shaft 23, the passage 22 is closed, and when the call follower 26 moves to the valley 35b, the open / close valve ( 24 is predetermined to open the passage 22. In addition, the opening / closing valve 24 opens the passage 22 and supplies compressed air to the pre-auxiliary nozzles N ₁ to N _{8. The} timing of starting injection of the main nozzle 3 is the same as that of the first embodiment. It is supposed to be the same.

However, in the second embodiment, the operation timings of the main nozzles 3 and the auxiliary nozzles N ₁ to N ₈ coincide with each other during normal operation of expectations in which the auxiliary nozzles N ₁ to N ₈ effectively operate to some extent. In this case, the actuating arm 25 is stopped at the position indicated by the solid line in FIG. ₈ , and the injection nozzles N ₁ to N ₈ are not sprayed simultaneously, but the rotation shaft 6 is rotated to open / close the valves 8A and 8B. Only by the first to eighth air supply pit (10 to 17) of the first to eighth auxiliary nozzles (N ₁ to N ₈ ) to inject compressed air from the first to eighth auxiliary nozzle (N ₁ to N ₈ ).

Now, when starting the weaving, when the weft is boiled or when the operation timing of the maintenance start auxiliary nozzles N ₁ to N ₈ is later than the operation timing of the main nozzle 3, the switch 34 is operated in advance to operate the electromagnet solenoid ( When the 28 is excited, the movable iron core 31 is moved to the left in FIG. 8, and the operation lever 29 is rotated in the counterclockwise direction against the elasticity of the spring 32. As shown in FIG. The actuating arm 25 is then rotated in a counterclockwise direction of rotation in the drawing by the spring 27 about the pivot shaft 23 such that the cam follower 26 is the floor 35a or valley 35b of the cam 35. )

Then, when the operation of the base is canceled, the weft yarns are arranged from the main nozzles 3, and the opening and closing valves 8A and 8B rotate at the same timing as the main nozzles 3 from the respective auxiliary nozzles N ₁ to N ₈ . Compressed air is sprayed sequentially.

On the other hand, since the cam follower 26 is pushed once at the same time as the cam follower 26 starts to be indented while the cam 35 is rotated, eight opening / closing valves 24 pass through the operating arm 25 and the rotation shaft 23. To open. Therefore, compressed air is simultaneously injected from the auxiliary nozzles N ₁ to N ₈ at the same time as the start of the entrainment, and the entrainment can be reliably performed as described in the first embodiment.

When the expectation is normal operation, the switch 34 is disconnected to remove the magnetic force of the electromagnet solenoid 28. Then, the actuating lever 29, the arm and the cam follower 25 return to their original positions indicated by the solid line in FIG. Since the passage 22 is closed by the valve 24, the simultaneous injection operation of the auxiliary nozzles N ₁ to N ₈ is stopped.

In this way, in the second embodiment, in addition to the on-off valves 8A and 8B, an air supply mechanism capable of spraying the pre-auxiliary nozzles N ₁ to N ₈ is provided so that it can be used only when necessary, such as when starting the weaving. Therefore, the compressed air amount and power required for the timely normal operation can be made smaller than in the first embodiment, but other operations and effects are the same as in the first embodiment.

In addition, this invention is not limited to the said Example, It can also be embodied in the following Example.

(A) In the first embodiment, the single-type air supply pits 9a and 9b are operated at the start of entrainment, but the air supply pit 9a and 9b of the first to eighth air supply pit 10 to 17 It is installed in the middle (not shown), so that the pre-auxiliary nozzles N ₁ to N ₈ are simultaneously sprayed during the entraining operation (see FIG. 10).

(B) Install two or more valleys 35b to the cam 35 so that the auxiliary nozzles N ₁ to N ₈ may be sprayed two or more times during one indentation operation.

(C) In the above embodiment, the air supply pit is formed to correspond to each of the auxiliary nozzles, but the air is supplied from the air supply pit to a plurality of auxiliary nozzles.

(D) In the second embodiment, the air supply mechanism for simultaneously injecting the auxiliary nozzles N ₁ to N ₈ is operated as required by the manual switch 34. Configured to work time.

As described above, the present invention provides a pneumatic loom in which a plurality of auxiliary nozzles are sequentially sprayed to assist the weft of the wefts injected from the main nozzle, and the auxiliary nozzles are all used at least once in one indentation operation period. By spraying all at once, weaving at the beginning of the weft, when the weft is cut, there is an effect that can be put flexibly.

Claims (1)

A jet loom in which a plurality of auxiliary nozzles are sequentially sprayed to assist the weft of the wefts injected from the main nozzle, wherein all of the auxiliary nozzles are simultaneously sprayed at least once during one entraining operation period. Auxiliary nozzle supply method in the.

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