JPS593580B2 - Weft insertion method and device for shuttleless looms - Google Patents

Description

Detailed Description of the Invention This invention relates generally to a method and device for inserting weft in a shuttleless loom, and in particular to a method and device for inserting the weft by gripping the weft with a bullet and making the bullet fly. be.

In order to eliminate the various drawbacks of the conventionally known fluid loom or six-cog gripper loom,
- A completely new weft insertion method different from the conventional ones as disclosed in Publication No. 15586, that is, a water ball is fixed to the tip of the weft to be inserted using a jet of compressed air, and the weft is made to fly inside the opening of the weft. A weft insertion method for phaseless looms was proposed.

In this prior art weft insertion method, when a water sphere is formed by a water sphere forming apparatus, the ice grains, which are the raw material for the water sphere, are guided through a single passage into the water sphere forming cylinder or forming chamber where the tip of the weft yarn is present. As a result, it is difficult to ensure that the weft thread is gripped by the water ball at one foot of the water ball, that is, at a position as close as possible to the center axis of the bullet.

If gripping is uncertain, even if the surface of the water ball slightly melts while the water ball is being accelerated by a jet of compressed air or flying through the girder, the weft may separate from the water ball.

In addition, if the gripping is not done at one foot position, the relationship between the direction of action of the weft tension on the water ball and the flying direction of the ice ball will change each time the weft is inserted, so the trajectory of the water ball will not be constant.

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

Such drawbacks are more likely to occur in shuttleless looms of the water polo weft insertion type, which require relatively high speed operation.
This is a problem that must be solved.

Therefore, the main object of the present invention is to provide a weft insertion method and device for a shuttleless loom that guarantees stable weft insertion by always reliably gripping the weft yarn at one foot position by loading the bullet.

For this purpose, the present invention c'; 11 Ice bullet molding, bullet loading, and bullet loading molding apparatus Ice grains serving as a raw material are supplied through at least two ice grain supply passages, and the tip of the weft in the molding chamber is connected to the two passages. Sandwiched by ice grains supplied from
It consists in a weft insertion method in a shuttleless loom in which the warp threads are allowed to fly through the openings for weaving.

Further, in order to carry out the above-mentioned weft insertion method, the present invention provides the following steps:
A bullet-loading and molding device having a molding chamber, a supply means for supplying ice grains serving as a raw material to the molding chamber through at least two ice grain supply passages, and a bullet-loading and firing device connected to the molding chamber, The bullet forming device includes compression means for compressing the two groups of ice particles supplied to the forming chamber in opposite directions and forming them into a ball, and the ball is launched into the warp opening by the water ball launcher. It consists in a weft insertion device in a running shuttleless loom.

Other objects and advantages of the invention will become more readily apparent from the following detailed description of the preferred embodiment, illustrated in the accompanying drawings.

The method and apparatus of the present invention can use materials that change from a liquid phase to a solid phase and vice versa as materials for the weft conveying body.
Also includes products made from paraffin or materials with properties equivalent to paraffin.

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, FIG. 1 is an explanatory diagram showing a partial cross-section of the entire weft insertion device according to the present invention. To roughly explain this weft insertion device, the tip of the weft yarn W from the weft cone 7 is loaded with a bullet. It passes through the firing device A and enters the molding chamber of the bullet molding device B, into which ice grains produced by the ice grain manufacturing device C are supplied through two ice grain supply passages.

The two supplied ice grain groups are molded in a molding chamber surrounding the tip of the weft W, forming a sheet 31.

The weft 31 is fired by the bullet loading and firing device A, passes through the forming chamber and the acceleration tube 29, and flies within the opening of the warp T, and weft insertion is performed in this manner.

Next, the above-mentioned weft insertion method and apparatus will be explained in more detail.

A length measuring drum 2, which is rotatably supported as a part of the machine stand 1, is pressed against the circumferential surface of a rotating roller 3 by a spring 4.

The rotating roller 3 is connected to a suitable drive device (
(not shown) and is constantly rotated.

Therefore, the length measuring drum 2 is also constantly rotated by the rotating roller 3 to measure the length of the weft yarn W from the weft cone 7.

In front of the length measuring drum 2 is a weft tension adjustment device 8, and in the rear is a storage device 9 for pooling a predetermined amount of weft yarns.

Therefore, the weft yarn W from the weft cone 7 passes through the guide 10, the tension adjustment device 8, and the guide 11, is measured on the cylindrical surface of the length measuring drum 2, and then further passes through the guide 12 and reaches the storage device 9.

The storage device 9 is provided with openings 9a and 9b at the top and bottom of the storage device 9. Air normally passes through these openings 9a and 9b as shown by arrows, and from the opening 9c on the left side of the storage device 9 to the opening 9d on the right side. The weft yarn W passing through is loosened as shown in the figure.

Immediately before weft insertion 61, a predetermined amount of weft yarn W is pooled in the storage device 9.

A weft control device 13 and a weft pullback device 14 are arranged behind the storage device 9.

The weft pulling device 14 is composed of a guide roller 15, a vertically movable bin 16, etc.
The purpose is to pull back the tip of the weft W cut by the cutter 30 disposed at the exit of the weft 9 into the molding chamber of the bullet loading and molding device B, and when pulling back, the pins 166'' move in a direction away from each other. The weft braking device 13 brakes the weft W between its holding plates 13a and 13b during pulling back.

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

The ammunition firing device A includes an air injection cylinder 17 attached to a part of the machine base, and a piston 18 disposed therein.

The cylinder 17 is provided with an inflow hole 19 for compressed air.

A lever 20 is pivotally attached to the piston 18, and by driving this lever 20 in a manner to be described later, the piston 18 is allowed to reciprocate.

Supply of compressed air to the ammunition firing device A is carried out by the compressor 21.

Compressor 21 (having one piston 22, this piston 22
is driven by an appropriate drive device (not shown) via the crankshaft 23 and the connecting rod 24.

Air compressed by compressor 21 (J compressed air tank 2
5. The pressure regulating valve 26 and the auxiliary air tank 27 are passed through the passage 28, and the air is supplied into the cylinder 17 from the inlet hole 19 connected to the end of the passage 28, and passes through the nozzle when the piston 18 moves to the left. The bullet loading and firing device A, to which pressure is applied for firing, which will be described later, has an elongated cylindrical hollow acceleration tube 29 extending toward the opening of the warp threads T.

A known cutter 30 for cutting the weft W after weft insertion is arranged near the tip of the accelerating tube 29.

In addition, behind the ice bullet forming device B, there are tension pads 213 and 214 which are appropriately driven and come into contact with each other in the acceleration tube 29 during the weft pulling operation, and elastically grip the weft to apply a predetermined tension to the weft. It is possible to arrange.

The ice bullet molding device B, which constitutes the main part of the present invention, is arranged to intersect with the ice bullet firing device A described above, and the intersection becomes a molding chamber for the ice bullet 31.

The ice bullet 31 (J
, also in a manner to be described later, is fired by the ice bullet firing device A, obtains the required speed by the acceleration tube 29, and heads toward the opening of the warp threads T.

The structure and operation of the ice bullet molding device B, which is the main part of the present invention, and the ice bullet firing device A, which is closely related thereto, will be explained in detail later.

Ice grains 32 produced by the ice grain manufacturing device C are supplied to the ice bullet molding device B by an ice grain supplying device in order to be used as a raw material for the ice bullets 31.

The ice production device C includes an insulating chamber 34 having walls 33 constructed of a suitable insulating material.

A freezing chamber 35 is formed within the heat insulating chamber 34,
An evaporation tube 36 is wrapped inside this.

Brine is supplied to this freezer compartment 35 from an opening (not shown).

A cylindrical ice particle production chamber 37 is formed in the center of the freezing chamber 35 , and a water injection pipe 39 rotatably supported by a ball bearing 38 enters the ice particle production chamber 37 from outside the insulation chamber 34 . ing.

The water injection pipe 39 is provided with an appropriate number of nozzles 41 in a portion inside the ice particle production chamber 37 for injecting ice-making water supplied from a water tank 40 placed above the heat insulation chamber 34.

42 is a moving pulley fixed to the upper part of the water injection pipe 39, and is driven by an appropriate drive source (not shown).

This drive causes the water injection pipe 39 to rotate.

Although not shown, the water injection pipe 39 is provided with a scraping plate that slides into contact with the freezing surface 43 of the ice particle production chamber 37, so that ice formed on the freezing surface 43 can be scraped off.

Below the freezing chamber 35, there is a funnel-shaped collection port 44 for the ice particles 32.

The lower end of the collection port 44 communicates with the ice particle supply device.

On the other hand, the lower end of the evaporation pipe 36 protrudes outside the heat insulation chamber 34 and is connected to an outlet pipe 45.

The outlet pipe 45 is connected to a compressor 46, and the compressor is connected to the condenser 4.
7, 48 is a side fan that cools the condenser 47, 49 is a suction pipe that sucks the warm air heated by the condenser 47, and the inlet 50 (1) is a funnel-shaped inlet facing the blower fan 48. It has expanded to

Further, the condenser 47 is connected to a receiver 51, and a refrigerant pipe 52 extending therefrom is connected to the evaporator pipe 3 through an expansion valve 53.
It is connected to the part of the heat insulating chamber 34 of No. 6 that goes outside.

Ice grains 32 manufactured by such ice grain manufacturing apparatus C
enters the ice grain supply device from the lower end of the collection port 44.

This ice particle supply device is surrounded by the aforementioned insulating wall 33 and includes a screw 56 rotatably supported by bearings 54 and 55.

One end of the screw 56 comes out of the wall 33 and is connected to a gear train 57, and a suitable drive device (not shown) for the gear train 57.
The screw 56 is rotated by the rotation.

The other end of the screw 56 has two ice grain supply passages 58 and 59.
It ends near the entrance.

Therefore, from the above explanation, the ice grains 32 made by the ice grain production device C are transferred to the two passages 58 by the ice grain supply device.
and 59 to the ice bullet molding device B, where the tip of the weft W is molded together to form an ice bullet 31. This ice bullet 31 is fired by the ice bullet launcher A and passes through the accelerating tube 29. After exiting, it became clear that the warp threads T passed through the opening.

60 is a woven fabric. Next, the ice bullets 31 that have passed through the openings of the warp threads T as described above are processed by the ice bullet processing device E.

This ice bullet processing device E4j includes a box-shaped ice bullet melting table 61 disposed opposite to the acceleration tube 29.

At the vertical extension 62 of the melting table 61, there is a flying ice bullet 3.
A heater 63 capable of melting 1 is provided.

Further, above the melting table 61 there is a hot air jet nozzle 64 .

The blowout nozzle 64 is connected to a suction pipe 49 that sucks hot air heated by the condenser 47.

A water tank 65 located below the melting table 61 receives melted cold water, and the cold water is injected into the water tank 40 located above the ice grain production device C by a water pump 66.

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 ice bullet firing device A and the ice bullet forming device B will be explained in detail.

FIG. 2 is a partially cross-sectional side view of the ice bullet molding device B enlarged from the side of the accelerator tube 29, and the ice bullet molding device B includes a block 68 having a molding chamber 67.

The passages 58 and 59 described above are connected to this flock 68, and further communicate with one ends of ice grain supply passages 58a and 59a provided in the block 68.

The cross-sectional area of the passages 58a and 59a becomes smaller toward their other ends so that the ice particles 32 are gradually compressed when passing through them.

Preliminary compression of the ice grains in the passages 58a and 59a makes it possible to shorten the stroke of the main forming pistons 69 and 70 for compressing the ice particles in the forming chamber 67, thus enabling high-speed operation, and the device Miniaturized.

The other ends of the passages 58a and 59a terminate above the molding chamber 67, and are spaced apart from each other so that the bifurcated cutter 71 can advance and retreat at right angles to the molding chamber 67. are doing.

Located between the legs 71a and 71b of the forked cutter 71 having ice cutting edges is a fixed blocking plate 72 that blocks the other ends of the passages 58a and 59a with respect to each other, the lower end of the blocking plate 72 is located directly above the molding chamber 67.

When the cutter 71 is raised as shown in FIG.
The ice particles 32 are fed until they hit the blocking plate 72, and as they descend as shown in FIG. 2, the ice particles 32 are cut by the cutter 71 and supplied into the molding chamber 67.

Therefore, the passages 58, 58a, 59 and 59a and the cutter 71 can be considered as means for supplying the ice particles 32 to the molding chamber 67.

The cutter 71 is operated by a drive shaft 73 via a cam and a lever 74 (not shown) provided therein.

The lever 74 is attached to the block 68 and is attached to the arm 75.
It is attached so that it can swing around a pin 76.

Therefore, the cutter 71 is moved up and down at appropriate timing by the rotation of the shaft 73, and supplies the ice particles 32 to the molding chamber 67.

The actuation of the main forming pistons 69 and 70 is also effected by the shaft 73.

That is, a cam 77 is provided on the shaft 73, and this cam 77 is connected to the main molded piston 6 that protrudes outside the block 68.
9 engages with a lever 79 having a forked end portion sandwiching a pin 78 provided at the end of the lever 79 .

The lever 79 is swingable about the pin 80.

Also, the other main piston 7 protrudes outside the block 68.
A similar pin 81 is also provided at the end of the lever 82, and this pin 81 and the forked end portion of the lever 82 engage with each other.

The lever 82 is swingable about a pin 83, and is pivoted counterclockwise in FIG. Always energized.

A connecting rod 87 swingably connects the levers 79 and 82.

Therefore, when the cam 77 operates to rotate the lever 79 counterclockwise, the main forming piston 69 is brought to the leftward retracted position as shown in FIG.
This rotation causes the lever 82 to rotate clockwise via the connecting rod 87, overcoming the action of the spring 85, and similarly brings the other main forming piston 70 to the exit position.

Next, when the cam 77 does not operate, the lever 82 is rotated counterclockwise and the lever 79 is rotated clockwise by the action of the spring 85, as shown in FIG. and 69 to the entry or molding position shown.

When the main body of the ice bullet 31 to be manufactured is a cylindrical body, the recesses 88 formed at the inner ends of the 6J1 main molded pistons 69 and 70
and 89 form a cylindrical body (!) as shown in FIG.

As described above, the main molding pistons 69 and 70 separated into left and right sides can be moved simultaneously in opposite directions by one driving source (cam 77), and the operating mechanism thereof is simple and easy.

Furthermore, if the levers 79 and 82 are configured so that their rotation centers can be changed by, for example, a combination of an elongated hole and a bolt, it is possible to adjust the stroke of the main molding piston, adjust the molding position, and adjust the molding position and acceleration tube. It is possible to easily perform alignment with the position.

The cross-sectional area of the other ends (inner ends) of the passages 58a and 59a and the cross-sectional area of the legs 71a and 71b of the cutter 71 are large enough to mold one ice bullet 31 at a predetermined compression ratio by one operation of the cutter 71. It's sato.

Further, the shape of the tip of the cutter 71 is such that the tips of the legs 71a and 71b are the same as those of the ice bullet 31 when viewed from the axial direction of the ice bullet 31 as shown in FIG. It is inclined downward from the center to the outside, and when viewed along the axial direction of the ice bullet 31 as shown in FIG. part) slopes downward.

FIG. 8 is an enlarged sectional view taken along the line ■--■ in FIG. 2, and it can be seen from this figure that the leg portions 71a and 71b4j have rectangular cross sections.

In this way, the ice grains to be supplied are cut by the cutter 71 in the amount necessary to produce one ice bullet, but the cutting cuts the legs 71a and 71b of the cutter 71 into the passages 58a and 58.
Even while blocking the inner end (exit side) of 9, ice particles (1 passage 5
8a and 59a, the surface hardness of the surface of the ice grain that hits the leg (the weft is gripped between these surfaces) increases, and when the ice grain is then cut and compressed, it becomes more reliable. Capable of gripping weft threads.

FIG. 7 shows an enlarged view of the vicinity of the molding chamber 67 in FIG. 2.

Therefore, the axis direction of the ice bullet (not yet formed) is the 7th
The direction is perpendicular to the plane of the figure.

FIG. 6 (J) is an enlarged perspective view showing the vicinity of the molding chamber 67 in FIG. 4.

Therefore, in FIG. 6, the ice pieces that are cut (not yet formed) are in the horizontal direction.

As can be seen from these Figures 6 and 7 as well as Figures 9 and 10, the block 68 that limits the molding chamber 67 has two rails extending horizontally at right angles to the axial direction of the ice bullet. A section 90 is formed, and the main molded pistons 69 and 7
0 is the groove 91 formed between the two rail parts 90.
It has a sliding part 92 that fits into the.

Therefore, when the two main molded pistons 69 and 70 come together as shown in FIG.
The main molded piston 69 comes into contact with each other.
The leading edges defining the recesses 88 and 89 of and 70 can be protected from damage.

The distance between the two rail parts 90 is determined by the cutter 71 in the molding chamber 6.
The passage 58a is smaller than the axial length of the ice grain group 32 supplied to the passage 58a, and the ice grain group 32 gradually decreases in cross-sectional area.
and 59a, the ice particles 32 entering the molding chamber 67 straddle the two rail sections 90 as shown in FIG. 9, and are prevented from falling into the grooves 91. do not have.

Therefore, with this configuration, the main forming pistons 69 and 70 compress the ice grain group 32 only with the surfaces that define the concavities 88 and 89, so that it is possible to effectively form the ice particles with a small compression force. can.

Next, as can be seen from FIGS. 4 to 6, the molding chamber 67 includes the aforementioned main molding pistons 69 and 70, two rear doors 94 and 95 that define the rear end of the ice bullet, and the head of the ice bullet. It is defined by front doors 96 and 97.

Vertical line 98 in FIG. 7 is the boundary between rear doors 94 and 95 when they are closed.

As is clear from FIG. 5, the drive shaft 73 has a cam 77 for the main molding piston in between, and a cam 99 for the rear door and the front door.
and 100 are provided.

Rear door 94°95 and front door 96 by cams 99 and 100
, 97 are operated using the same mechanism as in the case of the operation of the main molded pistons 69 and 70 by the cam 77 (the levers 79, 82, the connecting rod 87, etc. described in connection with FIGS. 2 and 3). Since it can be done, its explanation will be omitted.

Since the front doors 96 and 97 have concave surfaces corresponding to the shape of the ice warhead 31a and compress the head 31a, they may also be called preformed pistons.

Further, the grooves 91 between the rail portions 90 in the molding chamber 67 communicate with a drainage hole 101, so that water released during compression molding of the ice grain group 32 can be removed from the molding chamber 67.

In addition, when manufacturing the ice bullet 31 having the truncated conical head 31a (FIG. 4) as described above, the two ice grain groups 32 that are the raw materials for the ice bullet 31 are shown in FIG. As shown, it is preferable that the tip or head has a sharp shape.

In order to have such a shape, the passages 58a and 59a must be
It is sufficient to have the other end (inner end) shaped like this.

Assuming that the ice bullets to be manufactured have a conical head shape, but the ice particles supplied are rectangular parallelepipeds,
When the front doors 96 and 97 compress the corresponding portions of the ice grain group, the corners of the rectangular parallelepiped become caught between the joint surfaces of the front doors 96 and 97, which not only requires a large force for compression, but also makes it impossible to form. It may happen.

Therefore, with the shape of the ice grain group in this invention, compression force acts efficiently on the ice grain group, making it easier to mold, and therefore the main molding piston, front door, and rear door operate smoothly, and compression molding becomes easier. The driving power for this can be reduced.

From the above, it can be seen that it is preferable that the axial cross-sectional shape of the ice grain group 32, that is, the inner end shapes of the passages 58a and 59, be approximately similar to the axial center cross-sectional shape of the ice bullet 31.

From the above explanation, the ice particles 32 move from the passage 58 to 58a,
9 to 59a, and is extruded from the exits of passages 58a and 59a in the shape shown in FIG. The cams 77, 99 and 100 ride on the rail portion 90 and then rotate as the shaft 73 rotates.
The main molded piston 79,
70, the rear doors 94, 95 and the front doors 96, 97 operate,
The desired shape 31 is molded in the molding chamber 67.

The thus compression-molded Japanese 31 must be fired by the Japanese firing device A and pass through the opening of the warp threads T.

Although the Japanese launch device described below is of the type that uses compressed air, the present invention is not limited to this type, and may also be of the type that uses pressurized liquid or a spring (such as a spring). good.

First, if the molded 31 adheres to the surface of the main molded piston, the firing timing, flying speed, and acceleration time will become unstable, which will eventually hinder reliable weft insertion. , it is necessary to remove the adhesion of Japan 31 that may have occurred.

In Figures 4 and 5, the Japanese launcher A is the accelerator tube 2.
The block 68 has an opening 102 in linear alignment with the molding chamber 67 and the molding chamber 67;
A piston 103 connected to 4 is arranged.

Lever 104 is actuatable by a suitable mechanism (not shown).

This piston 103 is actuated at least after the front door and the rear door have left and moves slightly forward (to the left in FIG. 4) to remove the adhesion by shifting the position of the sheet 31 within the molding chamber 67.

After this action, the piston 103 returns to its original position.

The opening 102 communicates with a compressed air inflow hole 19 (see FIGS. 1 and 5) via a passage 105 provided in the block 68, and compressed air from the compressor 21 flows through the inflow hole 19 to the opening 102. The compressed air is supplied into the interior through a compressed air valve (not shown).

On the other hand, a nozzle section 106 is formed between the tip of the opening 102 and the tip of the piston 103, and the compressed air flows through the nozzle section 1.
06 suddenly injected, causing Japan 31 to launch.

Therefore, the threads 31 pass through the acceleration tube 29, pass through the openings of the warp threads T, and reach the thread processing device E.

Thereafter, the weft W is cut by a cutter 30 located near the exit of the accelerating tube 29, and pulled back by the weft pulling device 14, so that the tip is located approximately in the center of the forming chamber 67 as shown in FIG. The tip is held by rear doors 94 and 95 at a position corresponding to approximately the center of Japan.

Incidentally, instead of using the piston 103 to prevent adhesion of the ferrule 31, the main molding pistons 69 and 70 may be vibrated or heated after molding.

Figure 11 shows a Japanese 3 with the shape shown in Figures 12 and 13.
1' is a perspective view of main molding pistons 69' and 70' for molding.

The main molded pistons 69' and 70' (only one 69' is shown due to symmetry) have semi-cylindrical recesses 8.
A block 108 having a pyramid-shaped protrusion 107 extending toward 8 is fitted, and the block 108 is fitted with a screw 1
09 to the main molded piston 69'.

The protrusion 101 extends across the entire width of the main molded piston 69', and its thickness and width decrease toward the portion corresponding to the tip of the piston.

As shown in FIGS. 12 and 13, a groove 107a is formed in the portion corresponding to the protrusion 107 of the main molding piston 31', which is molded using such main molding pistons 69' and 70'. The shape will be the same.

When weft insertion is performed using this Japanese 31',
, the compressed air from the above-mentioned Japanese launcher A enters the groove 107a from the tail end of the Japanese 31' and attempts to rotate the Japanese 31', so the flight attitude of the Japanese 31' is stabilized, and therefore the flight attitude of the Japanese 31' is stabilized. The flight path remains constant.

In addition, it becomes less susceptible to the effects of air turbulence within the opening.

Furthermore, by determining the flight path force in Japan, it becomes possible to reduce the size of the main forehole, the beating stroke, and the opening amount of the warp yarns, and more stable high-speed weft insertion can be performed.

In addition, by stabilizing Japan's flight attitude, Japan is able to fly long distances at high speed, and it is also possible to insert the weft into wide-width looms at high speed, resulting in extremely high productivity. A loom is obtained.

The grooves formed in Japan can have various shapes other than those shown.

Another embodiment of the present invention is shown in FIGS. 14 to 16.

In this embodiment, an auger device is used as the ice particle production device C, and a Japanese firing device A and an ice bullet type device B are arranged at or near the top of this auger device.

Furthermore, in this embodiment, the ice grains produced by the auger device are directly guided into the molding chamber of the Japanese molding device B symmetrically with respect to the weft using the driving force of the auger device. The sword device C also functions to supply ice grains.

In FIGS. 14 to 16, the ice particle production device, that is, the auger device C (is equipped with a heat insulating chamber 110 formed in a substantially cylindrical shape with a double-walled groove structure.

A suitable heat insulating material 113 is packed between the double walls 111 and 112 constituting the heat insulating chamber 110.

A refrigerant pipe 114 is wound around the outer periphery of the inner wall 112.
The inside of the inner wall 112 is a generally cylindrical freezing chamber 115.

A suitable refrigerant may be added to the inlet pipe 11 as best shown in FIG.
6 into the refrigerant pipe 114 and exits through the outlet pipe 117.

Water also enters the freezer compartment 115 through the inlet pipe 118.

A /d auger 119 is arranged vertically in the freezing compartment 115, the lower end of the auger 119 is driven by a motor 121 via a reducer 120 outside the freezing compartment 115, and the upper end extends to the vicinity of the freezing compartment outlet 122. There is.

Further, the lower end is supported by a ball bearing 123, and the upper end is supported by a bearing 124.

A seal ring 126 is provided between the bottom plate 125 of the freezer compartment 115 and the lower end of the auger to prevent water leakage.

The auger 119 includes a screw 121.

Therefore, when the auger 119 is driven by the motor 121, the screw 127
At the same time, the scraped ice flakes are transported upward toward the freezer compartment outlet 122.

A freezing chamber outlet 122 provided in the first annular member 128 communicates with a plurality of ice particle supply passages 130 to 135 (FIG. 16) provided in another second annular member 129.

The first annular member 128 is a bearing 1 surrounding the upper end of the auger 119.
24 and the inner wall 112, and is fixed to the a-wall 112 by suitable means.

Further, the second ring-shaped member 129 is attached to the heat insulating material 113 by appropriate means so that its lower surface 136 is in close contact with the upper surface of the first ring-shaped member 128.

The upper surface 131 of the second segment-shaped member 129 forms a part of the upper surface of the auger device, and the Japanese firing device A and the Japanese molding device B are arranged thereon.

The arrangement of passageways 130-135 is shown in FIG.

In FIG. 16, the inlet side openings of the passages 130 to 135 that open to the lower surface 136 of the second annular member 129 are represented by dotted lines, and the outlet side openings that open to the upper surface 137 are represented by solid lines.

The inlet openings (dotted lines) of the passages 130-135 are spaced approximately circularly, and the outlet openings (solid lines) are spaced rectangularly or in two rows, so that the passages 130-135 are separated from the inlet side. The shape is slightly twisted toward the exit side.

Further, although not shown, the freezer compartment outlet 122 may be considered to have an arrangement, shape, and number corresponding to the inlet side openings of the passages 130 to 135 of the second annular member 129.

Next, the passages 130 to 135 communicate with the ice particle supply chamber or passages 138 and 139 of the Japanese molding apparatus B.

The ice particle supply chambers 138 and 139 each have a forming piston 1
40 and 141 extend in the direction of movement of the molded pistons 140 and 141, and are provided with bypass passages 142 and 143 (FIG. 16), respectively.

The bypass passages 142 and 143 exit from the rear ends of the ice particle supply chambers 138 and 139 (the side away from the molding chamber 144) and
．． It enters the front end (the side closer to the molding chamber 144).

As shown in FIG. 16, the outlet openings (indicated by solid lines) of the passages 130 and 133 open directly into the ice supply chambers 139 and 138, but the outlet openings of the passages 131, 135 and 132°134 open directly into the ice supply chambers 139 and 138. (shown with a solid line) is the bypass passage 14
3 and 142, respectively.

With the above structure, the ice particles 32 pushed up by the auger 119 are delivered to the freezer compartment outlet 122 and the passage 13.
0 to 135, it enters the ice particle supply chambers 138 and 139 and its bypass passages 142 and 143 and is filled.

Now, in this state, assuming that the molding pistons 140 and 141 shown in FIG. The ice grains pass through the supply chambers 138 and 139 from the rear end to the front end.

Further, when the molded pistons 140 and 141 are retracted so that their front surfaces partially or completely cross the bypass passages 142 and 143, the bypass passages 142 and 143 and the passage 13
The ice particles from the outlet side opening of 0,133 are molded into the piston 14.
0 and 141 appear in front.

Next, as the shaping pistons 140 and 141 move forward, the ice particles are carried by the front surfaces of the shaping pistons 140 and 141 into the shaping chamber 144, where compression shaping takes place in the manner described for the previous embodiment.

The forming pistons 140 and 141 are operated by the following mechanism.

In FIG. 15, rods 145 and 146 connected to molded pistons 140 and 141? j each has an end extending outside the ice grain supply chambers 138 and 139, with which swing levers 147 and 148 engage.

Swing levers 147 and 148 are connected to pins 149 at their lower ends.
and 150, and is provided with cam followers 151 and 152 at the center of the dome, and biased counterclockwise and clockwise by springs 153 and 154, respectively, at an approximately intermediate portion between the upper cam follower and the upper cam follower. has been done.

Therefore, the molded pistons 140 and 141? '; i Normally biased in the backward direction.

On the other hand, cams 156 and 157 are connected to the cam followers 151 and 157 on a drive shaft 155 that extends parallel to the rods 145 and 146 and is driven by an appropriate drive source (not shown).
spaced apart so that it can come into contact with the

Therefore, as the drive shaft 155 rotates, the cams 156 and 15
7, the levers 147 and 148 are swung, and the molding pistons 140 and 141 are moved forward and backward.

In this embodiment, the cylinder to be molded is a cylindrical body, and the molding chamber 144 is located between the molding pistons 140 and 141.
, one front door 158 (FIGS. 14 and 16), and the front surface of the small diameter portion 160 of the piston 159 of the Japanese launcher A.

As shown in FIG. 14, the front door 158 has an extension part 161 that protrudes outside the molding chamber, and the extension part 161 connects to the cam 155 attached to the drive shaft 155 via levers 162 and 163.
4, and the levers 162 and 163 are biased toward the cam 164 by a spring 166 stretched between the pin 165 and a fixed part (not shown).

Further, the lever 162 swings about the pin 167 as a fulcrum.

Therefore, the front door 158 is opened and closed via the levers 162 and 163 by the operation of the cam 164 as the drive shaft 155 rotates.

The front door 158 is designed to open immediately after molding in Japan.

On the opposite side of the front door with respect to Japan, a Japanese launcher A is arranged in line with the molding chamber 144 and the acceleration tube 168.

The Japanese launcher A includes a piston 159.

The piston 159 consists of a small diameter part 160 and a large diameter part 169, and the front surface of the small diameter part 160 is connected to the rear end surface (the first
In Fig. 6, the large diameter portion 169? j Extends to the outside of the cylinder 170.

A pin 171 is provided at the end of the large diameter portion 169 outside the cylinder, and this pin 171 and a lever 172 engage with each other.

The lever 172 is swingably supported by a pin 173 at its lower end, and is supported by a spring 174 at a relatively upper end.
In FIG. 4, the piston 159 is always urged counterclockwise, that is, in the direction of the molding chamber 144, and is connected to the cam 176 via a cam follower 175 at the center.

Cam 176 is also fixed to drive shaft 155.

Therefore, the piston 159 can move forward and backward by the operation of the cam 176 as the drive shaft 155 rotates.

A weft guide tube 177 extends through the center of the piston 159.

The weft guide tube 177 may or may not move together with the piston 159, and a hole through which the weft W passes is provided in the center.

At least before the ice grains are supplied to the forming chamber 144, the front end of the weft guide tube 177 is slightly protruding from the front surface of the piston small diameter section 160, as shown in FIGS. It's inside.

As shown in the figure, the tip of the weft W has a slight distance from the weft guide tube 177.

Therefore, when the two groups of ice particles are supplied to the forming chamber 144 by the forming pistons 140 and 141, the tip of the weft yarn is sandwiched between the two groups of ice particles, so that the weft yarn is gripped almost at the center of the formed group in Japan. It turns out.

A compressed air inlet 178 is located approximately in the center of the cylinder 170.
is provided.

The above-mentioned molded piston cam 1 in this second embodiment
56, 157, the operation timings of the front door cam 164 and the Japanese firing piston cam 176 are as follows.

First, before ice grains are supplied to the molding chamber 144, the front door 158 and the piston 159 are moved to the position shown in FIG. moves and compresses the ice grains, making them into Japan.

After that, the front door 158 is opened, and the piston 159 moves forward a little and pushes the material with the front surface of its small diameter portion 160 to remove the adhesion between the material and the surface of the molded piston, and then the piston 159 begins to move back and air compressed air. exposing the inlet 178 of the.

After the ice is ejected by the introduced compressed air, the forming pistons 140 and 141 move back to supply the next group of ice particles.
In preparation for compression and molding, on the other hand, after the weft W is pulled back to the position shown in FIG. 14 by a weft pulling device (not shown), the front door 15
8 and piston 159 are also returned to the positions shown in FIG.

As described above, in the second embodiment, since the ice grain manufacturing apparatus C and the Japanese molding apparatus B are directly connected, the entire apparatus becomes compact.

In addition, since the ice grains are directly supplied by the auger 119 of the ice grain supply device C, there is no need to use any other special equipment, and the amount of ice made can be easily controlled by rotating the auger 119 on its side. It can be changed.

Furthermore, since the entire device becomes compact, it is easier to cover the device with a heat insulating material, melting of ice particles is reduced, and power consumption is also reduced.

In addition, since the ice grain manufacturing equipment C and the Japanese molding equipment B are connected and the distance between them is short, the possibility of melting is reduced, and even if it melts, the water will not return to the ice grain manufacturing equipment. Since it refreezes, there is no need to consider countermeasures against melted water.

In addition, in the second embodiment, the freezer compartment outlet 12
Considering the shape of the passage connecting 2 and the ice grain supply chambers 138 and 139, the passage can be made only for 130 and 133. In this case, the molding mechanism is a reciprocating piston, and the piston is a Japanese molded piston. During the operation, the supply of ice grains to the ice grain supply chamber may be stopped at the piston surface.

11 to 20 show a third embodiment.

In this embodiment, two molding pistons that perform molding by rotating and oscillating motion are installed symmetrically with the weft in the middle, and the ice grains are supplied, compressed, and molded by rotation of the molding pistons over 180 degrees. It is.

In FIG. 17, the Japanese molding device B is the same ice grain manufacturing device (not shown) as that used in the first or second embodiment or other known ice grain manufacturing device.
is mounted on top of the

The Japanese molding apparatus B has a block 179 and a block 11.
Reference numeral 9 includes ice particle supply passages 182 and 183 that communicate with the freezing chamber outlets 180 and 181 of the ice particle production apparatus, respectively.

A molding chamber 184 is formed in this block 179, and molding pistons 185 and 186 are symmetrically arranged on both sides of the molding chamber 184 in such a manner that their molding concave surfaces 187 and 188 can pass through the ends of the ice grain supply passages 182 and 183. It is located in a central location.

Molded pistons 185 and 186 are keyed to keys 189 and 190
It is fixed to the shafts 191 and 192 by , and its contour is limited by a part of the concentric small circle and a part of the large circle, and the two molded concave surfaces 187 or 188 connecting these parts. ing.

The two molded concave surfaces on one molded piston are opposite in orientation and are opposed to each other with a distance of 180° or more.

The rotations of the two molding pistons 185 and 186 are completely synchronous, so that when one of the molding concave surfaces of one molding piston reaches the molding chamber 184, one of the molding concave surfaces of the other molding piston also reaches the molding chamber.

Therefore, as shown in FIG. 19, when the forming pistons 185 and 186 rotate in the same direction indicated by the arrows, the ice grains present in the ice particle supply passages 182 and 183 are scraped off by the forming concave surfaces 187 and 188 of the forming pistons. , the molding pistons 185 and 186 are transported to the molding chamber 184 without interfering with each other.

As shown in FIG. 17, upon reaching the molding chamber 184, the molding concave surfaces 187 and 188 come together and form the ice grains therebetween.

The direction of the arrow is then reversed and the next molded concave surface operates in the same manner as above.

As shown in FIG. 20, the shafts 191 and 19 are rotatably supported by ball bearings 193 and 194, respectively.
Pinions 195 and 196 are fixed to 2.

The pinions 195 and 196 mesh with a rack 197 which can be driven reciprocally by suitable means not shown, so that the reciprocating movement of the rack 197 causes the forming piston to
Rotation oscillations 85 and 186 are performed.

FIG. 18 is a cross-sectional view taken along the line X■-X■ in FIG. You can see that it is placed.

Reference numerals 200 and 201 are front doors that open vertically, and their contact surfaces in the illustrated closed state are at the same level as the center of the acceleration tube 198.

The front surface of the piston 199 functions as the rear door of the molding chamber.

A pore 202 is provided in the center of the piston 199, and the weft W passes through the pore 202.

Further, the piston 199 is provided with an air passage 204 that communicates the small hole 202 with the compressed air supply port 203.

The rear end of the piston 199 extends outside the block 179 and is actuated by a swing lever 205.

The operation of the third embodiment will be explained.

Weft W cut in front of the accelerating tube after one weft insertion is completed
? The tip of the weft yarn is pulled back to the front of the front door 200° 201 as shown in FIGS. 18 and 20 by the weft pulling device 14 (FIG. 1).

At this time, the front door 200°20Hj is not yet closed, and a weak air flow is being sent through the compressed air supply port 203 and the air passage 204, and the weft thread W? ′;! Due to this air flow, the molding chamber 184 is arranged in a row of shelves approximately in the center thereof.

Therefore, the next time the front doors 200, 201 are closed, the tips of the wefts W are reliably gripped.

Thereafter, the ice grains are supplied from two directions to the molding chamber 184 by the molding pistons 185 and 186, where the ice grains are gripped approximately at the center and molded.

After molding, the piston 199 moves slightly forward to perform final compression in the axial direction of the molded material, and then the front doors 200 and 201 are opened to remove the adhesion of the material, and then the piston 199 is retracted and the compressed air supply port 203
is held, and Japan launches.

As mentioned above, in this third embodiment, supply of ice particles,
Since compression and molding can be performed only by rotating and rocking the molding piston, the mechanism is extremely simple.

Also, molded concave surfaces 187 of molded pistons 185 and 186
Since the end areas of the ice grain supply passages 182 and 183 through which the ice grains and ice grains 188 pass are large, the ice grains are supplied through a wide surface, and the required amount can be supplied in a short time.

Furthermore, the device becomes more compact, allows for efficient insulation, and can sufficiently prevent the melting of ice grains.

FIG. 21 is a schematic sectional view illustrating the outline of a fourth embodiment, and this embodiment includes a plurality of molded pistons 208 and 20 that open in the circumferential surfaces of rotating drums 206 and 207, respectively.
9 are provided radially at equal intervals, these are arranged symmetrically with the molding chamber 210 in the middle, and by intermittently rotating these rotating drums 206 and 207, ice is formed in the molding pistons 208 and 209. Grain supply passages 211 and 212
The ice grains 213 and 214 compressed into approximately half pieces of ice to be molded in the molding piston are sent to the molding chamber 210, where they are molded with the weft W sandwiched between them. This method is based on the following method.

In this embodiment, the range of the ice supply passages 211 and 212 in contact with the rotating drums 206 and 207 can be sufficiently large, and the drum can be rotated at a small angle to supply ice grains for one pick. There are no time constraints and you can exercise easily.

Similarly, the compression time on one side can be long, and preliminary compression can be performed in the molding piston section before the molding position, making final molding in Japan easier.

Further, although the movement of the rotating drum is intermittent, since it is primarily a rotational movement, the mechanism is simple and high-speed rotation is possible.

Furthermore, since the entire device is compact and can be easily coated with a heat insulating material, there is less energy loss due to melting of ice particles or ice.

As is clear from the above explanation, according to the present invention, the ice grains that are the raw material for Japanese molding are divided into two and supplied to the molding chamber from two directions, so that during molding in Japan, the weft is divided into two ice grains. Being sandwiched between the grain groups, it is possible to reliably hold the weft yarn at a fixed position, particularly at a position as close as possible to the central axis.

Therefore, even if the surface of the weft may melt slightly during the flight inside the acceleration tube and the opening of the warp, there is no fear that the weft will separate from the weft, and the tension of the weft will act on the center of the weft. , flights in Japan are always stable.

In addition, since the final supply process of ice grains to the forming chamber is carried out from the left and right directions, the amount of movement of the mechanism is small, which not only makes the device more compact, but also makes the forming movement easier and allows for higher speeds of the loom. can be achieved.

Therefore, the present invention provides a weft insertion method and apparatus in a shuttleless mechanism that ensures stable weft insertion by always reliably gripping the weft at a fixed position.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway schematic explanatory view showing the entire weft inserting device according to the present invention, and FIG. 2 is an elevational view partially showing a Japanese forming device in the weft inserting device of FIG. 1 in cross section. Third
Figures (1) An elevational view showing the Japanese molding equipment shown in Figure 2 during molding, Figure 4 is a cross-sectional side view partially shown in elevation along the line IY-IV in Figure 3, and Figure 4a is an elevational view showing the Japanese molding equipment during molding. A sectional view taken along line a-a in the figure,
Fig. 5 is a plan view of Fig. 4 partially shown in section, Fig. 6 is an enlarged perspective view of the molding chamber, Fig. 7 is an enlarged view of the vicinity of the molding chamber in the state shown in Fig. 2, and Fig. 8 is A sectional view taken along the line ■-■ in Fig. 2, Fig. 9 is a perspective view of a group of ice particles before compression molding riding on the rail part of the molding chamber, Fig. 10 is a perspective view of the molding piston, and Fig. 11 The figure is a perspective view of a modified example of the molded piston.
2 and 13 are a side view and an end view of the piston molded by the molded piston shown in FIG. FIG. 16 is a cross-sectional plan view taken along line XVI-XVI in FIG. 15, and FIGS. 11 to 20 are cross-sectional views of further embodiments. , FIG. 17 is a diagram showing the state during molding, and FIG. 18 is a diagram showing the state at the time of molding.
FIG. 19 is a diagram showing a state in the middle of molding, and FIG. 20 is a diagram taken along line xx-xx in FIG. 17. FIG. 21 is a sectional view showing an outline of still another embodiment of the present invention. In the diagram, W (1 weft, Tζ) warp, lj Himi launcher B
is Japanese molding equipment, C is ice grain manufacturing equipment, D is ice grain supply equipment, 31.31'? Japan, 32 is ice grain or group of ice grains, 58
, 58a, 59, 59a are ice particle supply passages of the first embodiment;
61 is the molding chamber of the first embodiment, 69, 69', 70, 70
' is the molded piston (compression molding means) of the first embodiment, 13
0 to 135, 138 to 139 are ice particle supply passages of the second embodiment, 140 to 141 are molded pistons of the second embodiment, 14
4 is a molding chamber of the second embodiment, 182 to 183 are ice grain supply passages of the third embodiment, 184 is a molding chamber of the third embodiment, 185
~186? j Molded piston of third embodiment, 208-20
9 is a molding piston of the fourth embodiment, 210 is a molding chamber of the fourth embodiment, and 211 to 212 are ice particle supply passages of the fourth embodiment.

Claims (1)

[Scope of Claims] 1. A bullet raw material is supplied to a molding chamber of a weft inserting bullet molding device through at least two raw material supply passages, and the tip of the weft yarn in the molding chamber is used for the bullets supplied from the two passages. A weft insertion method for a shuttleless loom in which a bullet is sandwiched between raw materials and compressed together with a weft to form a weft insertion bullet, which is then flown into the warp opening to insert the weft. 2. A weft inserting bullet forming device having a forming chamber, a supply means for supplying bullet raw material to the forming chamber through at least two bullet raw material supply passages, and a bullet firing device connected to the forming chamber, The bullet molding device includes compression molding means for compressing two bullet raw materials supplied to the molding chamber in mutual directions and molding them into a bullet, and the bullet is caused to fly into the weft opening by the bullet firing device. Weft inserting device for shuttleless looms.