JPS5924217B2 - Bullet manufacturing equipment for shuttleless looms - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention generally relates to shuttleless looms, and more particularly to an apparatus for producing ice bullets that fly between the warp threads and insert the weft together with the tips of the weft threads using a jet of compressed air.

In order to eliminate the various drawbacks of conventionally known fluid looms or gripper looms, the Japanese Patent Publication No. 44-
A completely new weft insertion method different from the conventional one as disclosed in Japanese Patent No. 15586 is used, in which an ice bullet is fixed to the tip of the weft yarn to be inserted using a jet of compressed air, and the ice bullet is flown into the opening of the warp yarn. A weft insertion method was proposed for a weft-less loom that weaves by hand.

In this prior art weft insertion method, when an ice bullet is formed by an ice bullet forming device, the ice particles, which are the raw material for the ice bullet, pass through only one path to the water sphere forming cylinder or forming chamber where the tip of the weft yarn is located. Since the ice bullet is guided through the ice bullet, it is difficult to ensure that the weft yarn is gripped by the ice bullet at a fixed position of the ice bullet, that is, at a position as close as possible to the center axis of the ice bullet.

If gripping is uncertain, it is conceivable that the weft yarn may separate from the ice bullet even if the surface of the water sphere slightly melts during the acceleration of the ice bullet by a jet of compressed air or during flight in the offshore.

Furthermore, if the gripping is not performed at a constant position, the relationship between the way the weft tension acts on the water ball and the flying direction of the ice bullet changes each time the weft is inserted, so the trajectory of the ice bullet will not be constant.

In particular, the gripping of the weft threads is carried out near the circumferential surface of the ice bullet.
Moreover, in the case of uncertainty, the above-mentioned drawbacks become more apparent.

Such defects are more likely to occur in shuttleless looms with ice bullet weft insertion, which require relatively high speed operation.
This is a problem that must be solved.

In addition, in the conventional weft insertion method described above, the ice bullet forming device is configured to compress the ice particles in the forming chamber from two directions that are perpendicular to the axis and opposite in direction. In many cases, the drawback is that the device becomes complicated.

Therefore, an object of the present invention is to be able to reliably hold the weft thread at a desired position approximately along the axis of the main shaft, and to compress the ice grains, which are the raw material of the main shaft, in the axial direction. It is an object of the present invention to provide a main manufacturing device that requires fewer moving members.

Taking the above object into consideration, the main manufacturing apparatus of the present invention has the following features:
In order to manufacture a bullet that flies between the warp yarns together with the tip of the weft yarn using a jet of compressed air to insert the weft, a rotating plate is provided that is arranged to intersect the flight line of the bullet, and this rotating plate has a plurality of A cylinder is provided over the entire thickness of the rotating plate in such a manner that the axis of the cylinder passes through a first compression molding position in which the axis of the cylinder is successively aligned with the flight line during rotation of the rotating plate; a means for supplying ice grains, which is a Japanese raw material, to the cylinders, the means being disposed so as to communicate with the cylinders at a second ice grain filling position through which each cylinder of the plate passes before being aligned with the flight line; The ice grains in the cylinder are arranged so as to be able to enter the cylinder at the third pore forming position between the first and second positions, through which the cylinder through which the grains are fed pass, and the ice grains in the cylinder are provided with an axis for gripping the weft. means for forming pores extending in the direction; and a flight line arranged on the opposite side of the rotary plate from the warp to be aligned with the flight line so as to be movable in relation to the cylinder in the first position, and the flight line through which the weft passes. and a compression piston provided with a passage extending in the direction.

When each cylinder is at the second ice grain filling position, the ice grain supply means fills the cylinder with ice grains, and the rotary plate rotates to move the cylinder filled with ice grains to the third pore forming position. When proceeding, a perforation-shaped pore-forming means enters along the axis of the cylinder and forms pores for gripping the weft yarn in the ice grains therein.

After pore formation, the pore-forming means exits the cylinder.

When the rotary plate is further driven and the cylinder containing the ice grains with the pores formed therein is brought to the first compression molding position, the weft threads in the passage of the compression piston are exposed to the air flow. The action causes it to enter the pores of the ice grains.

Thereafter, a compression piston enters the cylinder and compresses the ice grains in the axial direction, thus gripping the weft threads in the desired position.

The invention will become more readily apparent from the following description of a preferred embodiment, illustrated in the accompanying drawings.

The apparatus of the present invention can use materials that change from a liquid phase to a solid phase and vice versa as the material for the weft conveying body. This also includes items made from materials with properties equivalent to those mentioned above.

In addition, ice grains do not simply refer to granular objects, but also to shapes that can be molded into one piece by compression, such as powder, snow, etc.
It also refers to flaky, semi-solid, etc.

First of all, FIG. 1 is an explanatory diagram showing a partial cross-section of the entire weft insertion device incorporating the Honjin manufacturing apparatus according to the present invention. The tip of the W is held in the ice grain production device A by a gripper 2 as described later.

The weft 2 is ejected by the ejection device B, passes through the acceleration tube 3, flies within the opening of the warp T, and weft insertion is performed in this manner.

Ice particles produced by the ice particle production apparatus C are supplied to the main production apparatus A through a passage or a supply means.

Next, the above-mentioned weft insertion device will be explained in more detail.

A length measuring drum 4 rotatably supported by a part of the machine base is pressed against the circumferential surface of a rotating roller 5 by a spring 6.

The rotating roller 5 is connected to a suitable drive device (
(not shown) and is constantly rotated.

Therefore, the length measuring drum 4 is also constantly rotated by the rotary roller 5 to measure the length of the weft from the weft cone 1.

A weft tension adjustment device 9 is provided in front of the length measuring drum 4, and a storage device 10 for pooling a predetermined amount of wefts is provided behind the length measuring drum 4.

Therefore, the weft yarn W from the weft cone 1 reaches the storage device 10 via the guide 11, the tension adjustment device 9 and the guide 12.

The storage device 10 is provided with openings at the top and bottom, and air normally passes through these openings as shown by the arrows, causing the weft W passing through the storage device 10 from the left side to the right side to loosen as shown by the dotted line. .

Immediately before weft insertion, a predetermined amount of weft yarn W is pooled in the storage device 10.

A weft braking device 13 and a weft pulling device 14 are arranged behind the storage device 10.

The weft yarn pullback device 14 is composed of a guide roller 15, a vertically movable pin 16, etc., and the weft yarn W is cut by a cutter 17 disposed at the exit of the acceleration tube 3, as will be described later.
The pins 16 move away from each other as shown by the chain lines during pulling back, and the weft braking device 13 pulls back the tips of the weft yarns W to a predetermined position in the ice grain production device A. is braked between the pair of holding plates.

A main firing device B using compressed air is arranged behind the weft pulling device 14.

The main launch device B includes an air injection cylinder 18 attached to a part of the aircraft base, and a piston 19 disposed within the cylinder 18.

The piston 19 also acts as a member of Japanese manufacturing equipment A, which will be described later.

The cylinder 18 is provided with an inflow hole 20 for compressed air.

A lever 21 is pivotally attached to the piston 19, and by driving this lever in a manner described later, the piston 19
is allowed to reciprocate.

Compressed air is supplied to the main launch device B by a compressor 22.

The compressor 22 has a piston 23, which is driven by an appropriate drive device (not shown) via a crankshaft 24 and a connecting rod 25.

The air compressed by the compressor 22 is transferred to a compressed air tank 26.
It is supplied into the cylinder 18 from the inlet 20 through the passage 27, and when the piston 19 moves to the left, pressure for firing is applied to the main body (to be described later) through the nozzle.

The main firing device B includes an elongated cylindrical hollow acceleration tube 3 extending toward the opening of the warp threads T.

A known cutter 17 for cutting the weft W after weft insertion is arranged near the tip of the accelerating tube.

The Japanese manufacturing equipment A of this invention is arranged to intersect with the main launcher B, and as will be described later, the molding chamber 40 (Fig. 2) of the main launching equipment 2 provided in the Japanese manufacturing equipment A is
It passes through the intersections of and B.

The main body 2 molded in the molding chamber 40 in the manner described below is fired by the main body firing device B in a manner also described later, obtains the required speed by the accelerator tube 3, and heads toward the opening of the warp threads T.

The structure and operation of the Japanese-manufactured device of the present invention and the main launch device B, which is closely related thereto, will be explained in detail later.

Ice grains produced by the ice grain manufacturing equipment C are supplied to the Japanese production equipment A via an ice grain supply passageway to be used as raw materials for the main body 2.

As the ice grain manufacturing device C, the above-mentioned Japanese Patent Publication No. 44-155
The device disclosed in Japanese Patent Application No. 86, or the device disclosed in the specification and drawings of Japanese Patent Application No. 115187/1987 filed by the same applicant as the present application can be employed.

Further, since the ice particle manufacturing device C has no direct relation to the gist of the invention of the present application, a detailed explanation thereof will be omitted.

Therefore, from the above explanation, the ice grains produced by the ice grain manufacturing apparatus C are supplied to the Japanese manufacturing equipment A through the ice grain supply passage, and are molded together with the tips of the wefts W in the molding chamber 40 to form the main body 2. It has become clear that this main line 2 is fired by the main line firing device B and passes through the opening of the warp threads T after exiting the acceleration tube 3.

29 is a woven fabric. Next, the main line 2 that has passed through the opening of the warp threads T as described above is processed by the Japanese processing device E.

This Japanese processing apparatus E includes, for example, an L-shaped Japanese melting table 30 disposed opposite the acceleration tube 3 with the warp T interposed therebetween.

A heater 31 capable of melting the flying main body 2 is provided on a vertical extension of the melting table 30.

Further, above the melting table 30, there is a jet nozzle 32 of hot air heated by a condenser (not shown) of the ice particle production device C.

A water tank 33 located below the melting table 30 receives melted cold water, and the cold water is injected into a water tank (not shown) of the ice grain production apparatus C by a water pump 34.

In this way, ice grains can be produced at a relatively low cost by effectively utilizing the phase change of water.

Next, details of the Japanese manufacturing equipment A and the main launch equipment B will be explained in detail.

FIG. 2 is a cross-sectional view of the Japanese manufacturing device A and the main firing device B, taken along a vertical plane that includes the weft or the flight line of the bullet.

The Japanese manufacturing apparatus A includes a rotating plate 35 disposed between the accelerating tube 3 and the cylinder 18.

The axis of the piston 19 that can be moved in and out of the cylinder 18 substantially coincides with the axis 3a of the accelerating tube 3, that is, the flight line of the bullet, and the rotary plate 35 is The rotation center line is eccentric from the axis 3a and is rotatably provided.

The rotating plate 35 is keyed to a rotating shaft 36, and the rotating shaft 36 is connected to the cylinder 1 via bearings 37 at both ends.
8 and a second plate member 39 to which the acceleration tube 3 is attached.

As shown in FIG. 3, the rotating plate 35 has a plurality of (16 in this embodiment) through holes 40 (which may also be called cylinders or molding chambers) equidistant from the center line of rotation. Each through hole 40 is sequentially substantially aligned with the axis 3a when the rotary plate 35 is driven by a drive mechanism described below.

As best shown in FIGS. 2 and 4, the first plate member 3
An ice grain supply passageway is connected to the outer surfaces of the second plate member 8 and the second plate member 39, and the first
An ice grain passage 41 is provided in the plate member 38 and the second plate member 39 over the entire thickness thereof.

The ice grain passages 41 may be provided on either one of the first and second plate members, and the number and shape of the ice grain passages 41 for one plate member are arbitrary, but it is most preferable that the ice grain passages 4
The through hole 40 is connected to the through hole 40 only while the through hole 40 is in communication with the
Since the ice grains are supplied to the ice grains, both plate members 38 and 3 are arranged so that the through hole 40 is communicated with the ice grain passage 41 for a relatively long period of time to ensure that the required amount of raw material is supplied.
9, each arcuate ice grain passage 41 is formed with its radius of curvature matching the axial distance between the through hole 40 and the rotary plate 35.

The position when the through hole 40 communicates with the ice grain supply passage is called the ice grain filling position or the second position.

Further, the position when the through hole 40 is aligned with the axis 3a is referred to as a compression molding position or a first position.

Further, as shown in FIG. 4, a pin 42 for forming a pore in the ice grains of the through hole 40 filled with ice grains is provided in the first position of the first plate member 38 in the direction of rotation of the rotary plate 35. It extends movably back and forth along the axis 3a in the direction toward the rotary plate 35 between the first and second positions on the upstream side (indicated by the arrow).

When the through hole 40 of the rotary plate 35 is in a position that allows the pin 42 that has advanced toward the rotary plate 35 to enter into the through hole, this position is called a pore forming position or a third position.

The Japanese manufacturing device A and the Japanese launching device are driven by a drive shaft 43 disposed below them via various cams.

The rotating plate 35 is driven by engagement between a grooved cam 44 fixed to the drive shaft 43 and teeth 45 provided on the outer periphery of the rotating plate 35.

The same number of teeth 45 as the through holes 40 are provided.

Further, the groove 44a of the grooved cam 44 rotates the teeth 45 by one pitch when the drive shaft 43 makes one rotation or a predetermined rotation, that is, the next tooth occupies the position where the previous tooth was. Rotate.

Further, when the grooved cam 44 drives the rotary plate 35 by its rotation, the grooved cam 44 is configured so that the required action is performed at the above-mentioned second position, third position, and first position of each through hole 40 of the rotary plate 35. The groove 44a is formed so that ice grain filling, pore formation, and compression firing can be performed.

The piston 19 is driven by a positive cam 4 fixed to a drive shaft 43.
6 via levers 47, 48, etc.

A driven roller 49 provided at one end of the lever 47 is connected to the positive cam 4.
6, and the other end is fixed to a pin 51 rotatably supported by a bearing 50.

Further, the lever 48 is also fixed to the pin 51 at one end, and pivoted to the mounting block 52 at the other end.

As best shown in FIG. 4, in addition to the piston 19, the above-mentioned pore forming pin 42 and positioning piston 53 are attached to the mounting block 52.

The pore forming pin 42 is moved to the rotary plate 35 by swinging the lever 48.
It is attached at a position where it can pass through the ice grains in the through-hole 40 in the third position along its axis when moving towards the weft, forming a pore 54 (FIG. 8) for gripping the weft, which will be described later. , the piston 19 passes the weft through the pore 54 of the ice grain in the through hole 40 in the first position, compresses the ice grain and forms it into a main body gripping the weft, and then moves the weft to a position where it can be launched. is attached to the positioning piston 5.
3 is the hole forming pin 42 and the piston 19 inside the through hole 40 where there is nothing inside after the main force has been fired.
It is installed at a position where it can reliably suppress the rotation of the rotary plate 35 and align the center of the through hole 40 with the axis 3a.

This positioning of the rotary plate allows operations such as pore formation, weft threading, ice grain compression, and domestic firing to be performed automatically and more easily and reliably.

As shown in FIGS. 2 and 4, the piston 19 is composed of a small diameter part 19a at the tip and a large diameter part 19b following it.The small diameter part compresses the ice particles, and the large diameter part compresses the ice particles.
The inflow hole 20 provided at 8 is opened and closed.

Therefore, the axis of the large diameter portion does not need to coincide with the axis 3a.

A weft passage 55 is formed linearly in the small diameter part 19a and the large diameter part 19b, and a countersunk hole 56 communicating with the passage 55 is formed at the tip of the small diameter part 19a.

Furthermore, a generally cylindrical sleeve 57 and a compression spring 58 are disposed on the piston 19 between the piston large diameter portion 19b and the mounting block 52, and the positions of these members 57 and 58 on the piston are determined. can be adjusted by means of an adjusting nut 59.

Therefore, even if the ice particle density in each cylinder or each through hole 40 is not constant, the compression stroke of the piston 19 will change depending on the ice particle density due to the action of the compression spring 58.
Not only does this not cause any hindrance to bullet molding, it is also possible to obtain a bullet of any hardness by adjusting the adjusting nut 59.

As shown in FIGS. 2 to 4, a pair of cams 60 are further attached to the drive shaft 43 for opening and closing the doors 61 and 62.

In order to transmit the movement of each cam 60 to the doors 61 and 62, a lever 64, which is pivotally connected at one end to a support shaft 63 and engaged at the other end to the outer end of the door, is moved by a spring 65 to a driven roller provided on the lever 64. 66 is constantly biased in the direction in which it contacts the cam 60.

The doors 61 and 62 are intended to prevent the ice particles in the through hole 40 from being pushed out toward the acceleration tube 3 when the ice particles are compressed by the piston small diameter portion 19a, and to form an arbitrary head shape in Japan. At least when the ice grains are compressed, they are in the closed position as shown in Figure 3, and at least when they are launched in Japan, they are in the open position.

Since the bullet manufacturing device of the present invention is constructed as described above, each cam 4 is driven by a drive shaft 43 that is constantly rotated.
4, 46 and 66 to the rotating plate 35 and the take block 5.
The pistons 19 and the doors 61, 62 attached to the wefts 2 and 2 are operated in an appropriate time relationship to produce an ideal bullet that reliably grips the weft along the axis.

That is, a plurality of through holes 40 are provided at equal intervals in the rotating plate 35.
If we pay attention to one specific one of them, the through hole 4
0 is a fixed ice grain passage 4 provided in the first plate members 38 and 39.
When passing through a second position (shown in FIG. 2) that communicates with the ice particle supply means and can receive ice particles from the ice particle supply means, the through hole is filled with ice particles; Pore forming pin 42
Upon reaching the third position (FIG. 4) aligned with the through hole, the through hole is removed from the through hole after the pore forming pin 42 extends into the through hole and forms a pore 54 in the ice particles therein. It remains in its third position long enough to exit.

During this time, the piston 19 is operated to compress and shoot the ice grains in the through hole before the through hole, and the positioning piston 53 enters the through hole two places ahead of the through hole and the rotating plate 35 is moved. Rotation is actively suppressed to ensure positioning.

Next, after the exit of the hole-forming pin 42, the through-hole is brought to the first position aligned with the piston 19, and the through-hole is used for predetermined operations, i.e., passing the weft into the hole 54, It remains in this first position until compression, firing, weft cutting by the cutter 17 (FIG. 1), weft pulling back by the weft pulling device 14 (FIG. 1), etc. are completed.

During this retention period, pores are formed in the ice grains in the through-hole after the through-hole by the pore-forming pin 42, and a rotation suppressing rod 53 is inserted into the through-hole in front of the through-hole to prevent rotation of the rotating plate. 35 rotation is suppressed.

Next, the through hole is brought to a position aligned with the rotation suppressing rod 53, and after a predetermined stay, returns to the above-mentioned second position.

Aspects of weft gripping, ice grain compression, and Japanese firing at the first position will be further explained with reference to FIGS. 8a and 8e.

FIG. 8a shows that after weft insertion by the previous bullet has been completed, the weft W is pulled back to the position shown in the figure by the weft pulling device 14 (FIG. 1), the piston small diameter portion 19a is stationary, and the small diameter hole 54 is The through hole 4 of the rotating plate 35 filled with ice particles having
0 is in the first position aligned with the piston small diameter portion 19a,
Doors 61 and 62 are shown in a closed state.

FIG. 8 shows that after the weft pull-back device is slightly loosened, low-pressure air is sent from the weft passage 55 (the illustration is omitted since it is easy for a person skilled in the art to configure the structure to perform this action). , air passes through the pores 54 of the ice grains and exits from the small hole 61 between the doors 61 and 62, so the flow causes the weft W to enter the pore 54.

At this time, the piston small diameter portion 19a has started moving toward the ice particles in the through hole 40.

FIG. 8C shows a state in which the piston small diameter portion 19a moves further forward and compresses the ice grains.

The front and rear portions of the ice particles are also compressed radially inward by the action of the substantially conical space 68 formed by the doors 61 and 62 and the inclined surface of the countersunk hole 56 formed at the front end of the piston small diameter portion 19a. The pores 54 are crushed from their front and rear ends, and the weft W starts to be gripped securely.

FIG. 8d shows the state in which the ice particles have been sufficiently compressed to form the bullet 2.

The weft W is securely gripped along the axis of the bullet 2.

8e shows that after the state shown in FIG. 8d, the piston's large diameter portion 19b retreats to the rear of the air inflow hole 20 provided in the cylinder 18, and the doors 61 and 62 open to allow the flight path of the bullet 2. After that, the high-pressure air valve 69 (FIG. 1) is opened, and the high-pressure air that enters the cylinder 18 through the inflow hole 20 causes the bullet 2 to be fired and reach the inlet of the acceleration tube 3.

In order to minimize air leakage during launch in Japan, a packing γ0 is disposed between the rotating plate 35 and the first plate member 38.

Various modifications and variations are possible without departing from the spirit and scope of the invention.

For example, FIGS. 5 and 6 show alternative drive mechanisms for rotary plate 35. FIG.

Teeth are cut on the outer periphery of the rotary plate 35, and another disk 71
It meshes with the.

The rotary plate 35 and the disc 71 have the same number of teeth.

The disk 71 is attached to a shaft 72 and has the same number of pins 73 as cylinders or through holes 40 provided in the rotating plate 35.
is provided on one side in a similar manner.

These pins 73 are connected to grooved cams 75 fixed to the drive shaft 74.
The disc γ1 is engaged with the drive shaft 74 for each rotation of the drive shaft 74.
is configured such that the rotating plate 35 rotates by one pitch of the pin γ3, that is, the rotary plate 35 rotates by one pitch of the through hole 40.

FIG. 7 shows the second plate member 39, except that the through hole γ6 provided in the rotary plate 35 is tapered and the doors 61 and 62 are disposed approximately in the middle of the second plate member 39 in the thickness direction. This embodiment is almost the same as the embodiment shown in FIGS.

When the ice grains begin to be compressed by the piston small diameter portion 19a, the pores 54 of the ice grains are crushed to the center by the action of the tapered surface of the through hole 76, and the weft passed through the pores 54 is securely attached to the bullet 2. be grasped.

The final molding of the bullet 2 is performed using a space T7 created by arranging the doors 61 and 62 approximately in the middle of the second plate member 39.
It is mainly done in

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of a weft insertion device incorporating the bullet manufacturing device according to the present invention, and Fig. 2 is a 3rd diagram of the bullet manufacturing device.
3 is a partially cross-sectional front view of the bullet manufacturing device shown in FIG. 2 as seen from the right side; FIG. FIG. 5 and FIG. 6 are views showing another drive mechanism, FIG. 7 is a view corresponding to FIG. 2 of another embodiment, and FIG. Figure 8 a''-e is an explanatory diagram of the manufacturing process in Japan. In the figure, A... Bullet manufacturing device, D... Ice particle supply means, T... Warp. , W... Weft, 2... Bullet, 19a... Compression means (
Piston small diameter part), 35... Rotating plate, 40...
...Through hole, 42...Pore forming means, 54
......Small hole for weft gripping, 55...Weft thread passage.

Claims (1)

[Claims] 1. In order to manufacture a bullet that flies between the warp yarns together with the tip of the weft yarn by a jet of compressed air and inserts the weft, a rotary plate is provided that is arranged to intersect the flight line of the bullet, and the rotary plate has a plurality of rotary plates. through-holes are provided in such a manner that the axis of the through-hole passes through a first position aligned with the line of flight one after another when the rotary plate rotates, and further, each through-hole of the rotary plate means for supplying ice grains, which are the raw material for the bullet, into the through hole at a second position through which the bullet passes before being aligned with the flight line; means for forming an axially extending weft gripping hole in the ice grain in the through hole in a third position between the positions; a compression means arranged in alignment with the line of flight so as to be movable back and forth with respect to the through hole, and provided with a passage extending in the axial direction through which the weft passes, the supply means in the through hole at the second position; supplying ice grains, forming a weft gripping hole in the ice grain in the through hole in the third position by the forming means, and forming a weft gripping hole for the ice grain in the through hole in the first position. A bullet manufacturing device for a shuttleless loom in which a weft thread is guided through a passage of the compression means, and the ice grains are compressed in the axial direction by the compression means to form a bullet.