JPS595698B2 - Weft insertion device for shuttleless looms - Google Patents

Description

[Detailed Description of the Invention] The present invention generally relates to a weft insertion device for a shuttleless loom, and more particularly to a device that holds the weft yarn with a bullet and performs weft insertion by making the bullet fly. .

In order to eliminate the various drawbacks of conventionally known fluid looms or gripper looms,
No. 15586 discloses a completely new weft insertion method different from the conventional one, in which a water valve is fixed to the tip of the weft thread to be inserted using a jet of compressed air, and the weft thread is caused to fly inside the opening of the warp thread. A weft insertion method was proposed for a shuttleless loom for weaving.

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

If gripping is uncertain, even slight dissolution of the surface of the water valve during acceleration of the water valve by a jet of compressed air and flight in the shed may cause the weft yarn to separate from the water valve.

Furthermore, if gripping is not carried out at a constant position, the relationship between the direction in which the tension of the weft yarn acts on the water valve and the direction in which the water valve flies changes each time the weft is inserted, so that the trajectory of the water valve is not constant.

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

Such drawbacks are more likely to occur in shuttleless looms with a water valve 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 device for a shuttleless loom that ensures stable weft insertion by ensuring that the water valve always holds the weft at a fixed position.

For this purpose, the weft inserting device of the present invention includes a water valve forming device having a forming chamber, and a supply means for supplying ice grains, which are raw materials for water valves, to the forming chamber through at least two ice grain supply passages. and a water valve firing device connected to the molding chamber, and the water valve molding device presses two groups of ice particles supplied to the molding chamber in opposite directions to mold them into a water valve. In the process from the two ice grain supply passages to the water valve molding chamber, the molded water is The valve is crimped with the uneven surfaces interlocking with each other, and the water valve thus formed is made to fly into the opening of the warp by the ice object launching device.

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 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. , or those made of materials with properties equivalent to these.

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 according to the present invention. To roughly explain this weft insertion device, the tip of the weft yarn W from the weft cone I has an ice body. It is located in the molding chamber of the water valve molding device B through the firing device A, and the ice grains produced by the ice grain manufacturing device C are supplied to this molding chamber through two ice grain supply passages.

The two groups of ice particles supplied are molded in a molding chamber surrounding the tip of the weft W to form a water valve 31.

The water valve 31 is ejected by the ice ejecting device A, passes through the forming chamber and the acceleration tube 29, and flies within the opening of the warp threads T, thus performing weft insertion.

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

A length measuring drum 2 rotatably supported by 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 I 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, and air normally passes through these openings 9a and 9b as shown by arrows, from the opening 9c on the left side of the storage device 9 to the opening 9d on the right side. Loosen the weft yarn W to be pulled out as shown in the figure.

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

A weft braking device 13 and a weft pulling device 14 are arranged behind the storage device 9.

The weft pulling device 14 is composed of a guide roller 15, a vertically movable pin 16, etc., and an acceleration tube 29 as described later.
The purpose is to pull back the tip of the weft W cut by the cutter 30 disposed at the outlet of the weft into the molding chamber of the water valve molding device B, and when the pins 16 are pulled back, the pins 16 move away from each other. The weft braking device 13 brakes the weft W between its holding plates 13a and 13b during pulling back.

A compressed air water valve firing device A is arranged behind the weft pulling device 14.

The ice body launcher A includes an air injection cylinder 17 attached to a part of the machine base, and a piston 18 disposed within the air injection cylinder 17.

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

A v-bar 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.

Compressed air is supplied to the ice body launcher A by a compressor 21.

The compressor 21 has a piston 22, which is driven by an appropriate drive device (not shown) via a crankshaft 23 and a connecting rod 24.

The air compressed by the compressor 21 is transferred to a compressed air tank 25.
, passes through the pressure regulating valve 26 and the auxiliary air tank 27 through a passage 28, is supplied into the cylinder 17 from an inlet hole 19 connected to the end of the passage 28, and is passed through a nozzle when the piston 18 moves to the left. Firing reservoir pressure is applied to the water valve, which will be described later.

The ice body launcher A 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 water valve forming device B, there are tension pads 213 and 214 which are driven as appropriate and come into contact with each other in the acceleration tube 29 during the weft pulling operation to elastically grip the weft and apply a predetermined tension to the weft. It is possible to arrange.

The water valve molding device B, which constitutes the main part of this invention, is arranged to intersect with the above-mentioned ice body launching device A, and the intersection becomes a molding chamber for the water valve 31.

The water valve 31 molded in the molding chamber in the manner described below is
This is also ejected by the water valve ejecting device A in a manner to be described later, obtains the required speed through the accelerating tube 29, and heads toward the opening of the warp threads T.

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

Ice grains 32 produced by the ice grain production apparatus C are supplied to the water valve molding apparatus B by an ice grain supplying apparatus in order to be used as a raw material for the water valve 31.

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

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

Prine 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 driven 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 opening 44 for the ice particles 32.

The lower end of the collection port 44 communicates with an 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.
Connected to 7.

48 is a blower fan that air-cools the condenser 47, 49 is a suction pipe that sucks the warm air heated by the condenser 47, and its population is 5.
0f''i It expands into a funnel shape so as to face the blower fan 48.

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 above-mentioned 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 the screw 56 is rotated by rotation of the gear train 57 by a suitable drive device (not shown).

The other end of the screw 56 has two ice grain supply passages 58 and 59.
It ends near the 0 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 water valve molding device B, where it is molded together with the tip of the weft W to become the water valve 31. This water valve 31 is fired by the water valve firing device A and exits the accelerating tube 29. After that, it became clear that the warp yarns T passed through the openings.

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

This water valve processing device E includes a box-shaped water valve melting table 61 disposed opposite to the acceleration pipe 29.

At the vertical extension 62 of the melting table 61, there is a water valve 3 that has flown
A heater 6.3 is provided which can melt 1.

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 water valve firing device A and the water valve molding device B will be explained in detail.

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

The above-mentioned passages 58 and 59 are connected to this block 68, and further communicate with one ends of ice particle 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.

As shown in FIGS. 2 and 3, a bifurcated cutter 71 is disposed above the molding chamber 67 so as to be able to move up and down across the passages 58a and 59a at right angles.

The cutter 71 has spaced apart legs 71a with ice grain cutting edges.
and 71b, and there is a fixed blocking plate 72 between the legs 71a and 71b to block the passages 58a and 59a from each other.

The lower end of the blocking plate 72 is located directly above the molding chamber 67.

When the cutter 71 has risen sufficiently as shown in FIG. 3, the ice grains 32 are fed until they hit the blocking plate 72.

Therefore, the surface of the blocking plate 72 that comes into contact with the ice particles 32 is also connected to the passage 58.
Strictly speaking, these surfaces of the blocking plate 72 are the other ends of the passages 58a and 59a, but in this specification, the passages 58a and 59a are the surfaces that limit the passages 58a and 59a.
The other end of a is defined as a surface defined by the surfaces of the legs 71a and 71b of the cutter 71 on the side away from the blocking plate 72.

FIG. 5 is a cross-sectional view taken along the line v-■ in FIG.
However, the Suigo 31 in the molding chamber 67 is excluded), and from this figure, unevenness is formed on the surface of the cutter leg 71b (the same applies to the leg 71a) on the side facing the blocking plate 72. I understand that.

Moreover, as can be seen from FIGS. 5 and 6, the blocking plate 72
3 are also formed with unevenness corresponding to the unevenness provided on the cutter leg portion 71b. Therefore, as shown in FIG. As shown in the figure, unevenness is formed.

Therefore, when the cutter 71 descends as shown in FIG.
The ice grains 32 are cut by a cutter 71 and are supplied into the molding chamber while having irregularities.

That is, the opposing surfaces of the two ice grain groups 32 supplied to the molding chamber 67 have unevenness that complement each other.

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

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 a lever 79 having a forked end portion that pinches 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.

If the main body of the Suigo 31 to be manufactured is a cylindrical body, the recesses 88 and 89 formed at the inner ends of the main molded pistons 69 and 70 will form a cylindrical body as shown in FIG. 3 when the two are put together. However, it goes without saying that the scales can be changed arbitrarily depending on the shape of the water village 31.

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 such that the amount of ice grains cut by one operation of the cutter 71 is reduced to one at a predetermined compression rate. It has a size that allows the water valve 31 to be molded.

In addition, the shape of the tip of the cutter 71 is such that the tips of the legs 71a and 71b are shaped so that the ice particles can be easily cut when viewed from the axial direction of the water valve 31 as shown in FIG. It is inclined downward from the center to the outside, and when viewed along the axial direction of the water valve 31 as shown in FIG. part) slopes downward.

FIG. 6 is an enlarged sectional view taken along the line Vl-VI in FIG. 2, and it can be seen from this view that the legs 71a and 71b have a rectangular cross section with unevenness.

In this way, the ice grains to be supplied are cut by the cutter 71 in the amount necessary to manufacture one water valve, but the cutting cuts the legs 71a and 71b of the cutter γ1 into the passages 58a and 58.
Even while blocking the inner end (exit side) of passage 9a, ice particles remain in passage 5.
8a and 59a, the surface hardness of the surface of the ice grain that hits the leg (between which the weft is gripped) increases, and when it is then cut and compression molded, the weft is more securely held. can be grasped.

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

Therefore, the axial direction of the water valve (not yet molded) is the 7th
The direction is perpendicular to the plane of the figure.

In FIG. 5, the ice pieces to be cut (not yet formed) are in the horizontal direction.

As can be seen from FIGS. 5 and 7, the block 68 that defines the molding chamber 67 is formed with two rails 90 that extend horizontally at right angles to the axial direction of the water valve, and the main molding piston 69 and 70 have sliding parts 92 that fit into grooves 91 formed between the two rail parts 90.

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 rails 90 and do not fall into the grooves 91.

Therefore, with such a configuration, the main forming pistons 69 and γ0 compress the ice grain group 32 only on the surfaces that substantially limit the recesses 88 and 89, so that the ice particles can be effectively formed with a small compression force. be able to.

Next, as can be seen from FIGS. 4, 5, and 7, 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 water valve, and the water valve. It is defined by front doors 96 and 97 (front door 96 is not shown because it is symmetrical) defining the head of the machine.

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

Although not shown, the drive shaft 73 is provided with cams for the rear door and the front door, sandwiching a cam 77 for the main molding piston.

The operation of the rear doors 94, 95 and front doors 96, 97 by these rear door and front door cams is the same as the operation of the main molded pistons 69 and 70 by the cam 77 (see Fig. 2 and Since this can be done using the levers 79, 82, connecting condoms 8), etc. described in connection with FIG. 3, the explanation thereof will be omitted.

The front doors 96 and 97 have a concave surface corresponding to the shape of the water valve head 31'a and compress the head 31a, so they may 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 water valve 31 having the truncated conical head 31a (FIG. 4) as described above, the two ice grain groups 32, which are the raw materials for the water valve 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 water valve to be manufactured has a shape with a conical head, but the group of ice particles supplied is a rectangular parallelepiped,
When compressing the corresponding portions of ice grains using the front doors 96 and 97, the corner portions of the rectangular parallelepiped become wedged between the joint surfaces of the front doors 96 and 97, which not only requires a large force for compression, but also prevents molding. Sometimes it becomes impossible.

Therefore, with the shape of the ice grain group according to the present invention, compression force acts efficiently on the ice grain group, making it easier to mold.As a result, the main molding piston, front door, and rear door operate smoothly, and compression molding becomes possible. can save driving power.

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 shape of the passages 58a and 59a, be approximately similar to the axial center cross-sectional shape of the water valve 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 main molded piston cam 77 rides on the rail portion 90 and then rotates as the shaft 730 rotates.
, the main molding pistons 69, 70, the rear doors 94, 95, and the front doors 96, 97 operate at appropriate timings by the operation of the rear door and front door cams, and the desired water valve 31 is opened in the molding chamber 67.
It can be seen that it is molded.

The molded water valve 31 has an integral shape as shown in FIG.

The tip of the weft W is held in a zigzag shape as shown in the figure in the ice bullet 31 due to the uneven surface of the two ice grain groups before forming, so it separates from the water valve 31 during weft insertion. There is no problem at all, and you can insert the weft reliably.

The water valve 31 compression-molded in this manner must be fired by the water valve firing device A and must pass through the opening of the warp threads T.

Although the water valve firing device A described below is of a type that uses compressed air, the present invention is not limited to this type, and may be of a type that uses pressurized liquid, a spring, or the like.

First, if the molded water valve 31 adheres to the surface of the main molded piston, the water valve firing timing, water valve flight speed, and acceleration time will become unstable, which will eventually hinder reliable weft insertion. Therefore, any adhesion that may have occurred on the water valve 31 must be removed.

In FIG. 4, the water valve firing device A includes an opening 102 provided in the block 68 in line with the accelerating tube 29 and the molding chamber 67. A piston 103 is arranged that extends close to the piston 103 and has its other end connected to a lever 104.

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

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

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

The opening 102 communicates with the compressed air inflow hole 19 (see FIG. 1) via a passage 105 provided in the block 68.
Compressed air from the compressor 21 is supplied through the inflow hole 19 into the opening 102 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.
The water is suddenly injected from 06, causing the water valve 31 to fire.

Therefore, the water valve 31 passes through the acceleration pipe 29, passes through the opening of the warp thread T, and reaches the water valve processing device E.

Thereafter, the weft W is cut by a cutter 30 located near the exit of the accelerating tube 29, and is pulled back by the weft pulling device 14, so that the tip is located approximately at the center of the forming chamber 6r as shown in FIG. The tip is held by rear doors 94 and 95 at a position corresponding to approximately the center of the water valve.

Note that instead of using the piston 103 to prevent the water valve 31 from sticking, the main molding pistons 69 and 10 may be vibrated or heated after molding.

As is clear from the above description, according to the present invention, the group of ice particles having an uneven surface, which is the raw material for the water valve, is divided into two parts.
Since the weft is fed into the molding chamber from the same direction, during the molding of the water valve, the weft thread is sandwiched between the uneven surfaces of the two groups of ice grains, and is placed as close as possible to a certain position of the water valve, especially the central axis of the molded water valve. This makes it possible to reliably hold the weft yarn in the correct position.

Therefore, even if a large weft tension builds up during flight in the acceleration tube and the warp opening, or even if the surface of the water valve slightly dissolves, there is no fear that the weft will separate from the water valve. The weft tension acts on the center of the water valve, so the flight of the water valve is always stable.

Further, since the final supply process of ice particles to the molding chamber is performed from the left and right directions, the amount of movement of the mechanism is small and the apparatus becomes compact.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway schematic diagram showing the entire weft inserting device according to the present invention, FIG. 2 is a front view partially showing the water valve forming device in the weft inserting device of FIG. Fig. 3 is a front view showing the water valve molding device shown in Fig. 2 during molding, Fig. 4 is a side view partially shown in section along the line ■-IV in Fig. 3, and Fig. 4a is a side view showing the water valve molding device in Fig. A-a line sectional view, Figure 5 is the third
A cross-sectional view taken along the line v-■ in the figure (excluding Suigo in the molding room), Figure 6 is a cross-sectional view taken along the line V in Figure 2.
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 plan view of the Suigo molded according to the present invention. In the figure, W is the weft, T is the warp, Ar water valve firing device, B is the water valve forming device, C is the ice grain manufacturing device, D is the ice grain supply device,
31 is Suigo, 32 is ice grain or ice grain group, 58.58a,
59.59a is the ice grain supply passage, 67 is the molding chamber, 69.7
0 is the main molding piston (compression molding means).

Claims (1)

[Claims] 1. A weft inserting bullet forming device having a forming chamber, a supply means for supplying bullet raw materials 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 toward each other and molding them into a bullet. Weft insertion in a shuttleless loom in which irregularities are formed on the surfaces that engage with the surfaces of the two bullet raw materials that are pressed against each other during the process, and the formed bullets are flown into the warp openings by the bullet firing device. Device.