JPH10245764A - Automated hooked rug weaving machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automated hooked rug weaving machine that can automatically and surely do the selection and exchange from a wide variety of pile yarns, enables labor saving and improve the yield and production efficiency in the production of embroider carpet. SOLUTION: This automated hooked rug weaving machine is provided with the hooking machine that is movably and rotatably arranged to the upper part of the base fabric and with the yarn-exchanging and feeding machine. This yarn-exchanging and feeding machine is equipped with the selector S that holds a plurality of pile yarns 1a, 1b from the pile yarn source 2 at their ends in the prescribed waiting position and sends out one pile yarn selected from the waiting pile yarn group from a single yarn outlet, the clumps 4a, 4b hold individual pile yarns, the feed-back means 5a, 5b that forcibly feed individual pile yarns 1a, 1b and pull back them in the reverse direction, the yarn guiding tube 9 that guides the pile yarn from the yarn outlet at the selector S toward the hooking machine 8, the forced feed means 62 that sends one of pile yarns 1a, 1b in the selector S via the yarn-guiding tube 9 to the hooking machine 8 by using air pressure.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic hook drag loom which is suitable for weaving various patterns, especially multicolored patterns having large hand-woven patterns, on a base cloth such as an embroidered carpet by a hooking machine.

[0002]

2. Description of the Related Art Conventionally, in the production of embroidery carpets having a pattern having a large change in hand-woven tone, hand-held hook machines have been used to weave along patterns and the like drawn on a base cloth. Requires great skill and great effort,
There was a drawback of inefficiency. Therefore, in recent years, a hook machine is movably disposed above a horizontally stretched base cloth, and the hook machine is moved in accordance with design data or a program previously input to an NC (numerical control) device. As a result, an automatic hook drag loom in which pile yarns are automatically woven into a base cloth has appeared (Japanese Patent Publication Nos. 1-35855 and 2-27468).

In such an automatic hook drag loom, X
A second traveling platform is movably provided in a Y direction orthogonal to the X direction on a first traveling platform movably provided in a direction, and a hook machine is pivotably mounted on the second traveling platform. The two carriages move so that the hollow needle of the hook machine moves to the designated position based on the signal from the NC device, the lowered needle penetrates the base cloth, and the needle rises and is pulled out of the base cloth. At this time, the pile yarn passed through the needle is implanted and cut by the cutting mechanism built in the hook machine, and the needle similarly penetrates the base fabric at the next moving position, so that the bile yarn is both on the surface of the base fabric. The pattern is woven to connect the positions, and the required pattern is woven by repeating this process. Thus, the hook machine is controlled by the turning mechanism so that the oblique cut surface at the tip of the needle always faces rearward in the moving direction.

[0004]

By the way, since the pattern of the embroidery carpet is generally woven in multiple colors, in the above-mentioned automatic hook drag loom, when the weaving of a required section by a certain pile thread is completed, the embroidery carpet is supplied to the hook machine. The weaving is performed again by changing the type of yarn to be laid, but at the time of this yarn change, the pile yarn whose weaving has been completed is completely removed from the yarn path of the hook machine, and the new pile yarn is It is necessary to send to the position. However, conventionally, since this thread change operation is performed manually, it takes a great deal of time, and the following weaving becomes impossible due to an operation error, and a defective product may be generated due to an incorrect thread selection or the like. In addition to that, the time spent on thread replacement has been a factor in reducing the production efficiency of embroidered carpets.

[0005] A first object of the present invention is to provide an automatic hook drag loom capable of automatically and reliably selecting and exchanging yarns for various kinds of pile yarns in view of the above-mentioned circumstances. An object of the present invention is to save labor and improve yield and production efficiency in the production of embroidery carpets and the like. Also,
A second object of the present invention is to provide an automatic hook drag loom which can automatically perform the above-described yarn selection and exchange, in particular, which can move the hook machine lightly with a small driving force, thereby increasing the speed of weaving. The aim is to reduce operating costs.

[0006]

In the automatic hook drag loom according to the first aspect of the present invention, in order to achieve the first object, the hook machine extends above the stretched base fabric in the same manner as described above. In a configuration in which it is arranged so as to be movable and swivelable in both XY directions, a yarn exchange supply device for supplying and exchanging pile yarns to the hook machine is provided, and the yarn exchange supply device includes a plurality of yarn exchange supplies supplied from a pile yarn supply source. A selection unit that holds the tip of the pile yarn at a predetermined standby position and sends out one pile yarn selected from a pile yarn group in a standby state from a single yarn outlet, and a selection unit from a pile yarn supply source to a selection unit. Feedback means for forcibly feeding each pile yarn individually through the yarn feeding path and pulling back in the opposite direction;
A yarn guiding tube for guiding the pile yarn from the selection unit to the hook machine, a pressure feeding means for feeding one of the pile yarns in the selection unit to the hook machine via the yarn guiding tube by air pressure, and a control device. This control device, when feeding one pile yarn selected from the pile yarn group in the selection unit to the hook machine, operates the corresponding pressure feeding means, and the tip of the pile yarn is moved to the needle point of the hook machine. While the corresponding feedback means is operated to feed until reaching, at the time of yarn exchange, the corresponding feedback means is pulled back until the leading end of the pile yarn which has been woven returns to the selection section, and then the leading end of the pile yarn is returned. Is set to be held at a predetermined standby position.

[0007] According to such a configuration, the tips of a plurality of pile yarns having different colors, materials, and the like are arranged in a collection state in the selection portion, and the base yarn is selected using one of the pile yarns. When weaving into the cloth, the feeding means corresponding to the pile yarn is fed until the tip of the pile yarn reaches the needle point of the hook machine via the air pressure of the pressure feeding means. At this time, since the other pile yarns are not fed, the pile yarns are not fed into the selected pile yarns. However, in the case where the weaving of the predetermined section is completed and the yarn is exchanged, the corresponding feedback means is pulled back until the leading end of the pile yarn whose weaving is completed returns to the selection section, and after stopping this pulling, The pile yarn used for the next weaving may be sent to the hook machine in the same manner as described above. Therefore, regardless of the number of yarns to be selected, the selection of the pile yarn and the exchange and feeding are all performed automatically.

According to the second aspect of the present invention, a clamp means for individually gripping each pile yarn is additionally provided interposed in the yarn feeding path from the pile yarn supply source to the selection section,
When feeding one of the pile yarns selected from the pile yarn group in the selection section to the hook machine, the control device activates the pressure feeding means with only the corresponding clamp means in an open state, and the tip of the pile yarn is turned to the hook machine. While the corresponding feedback means is operated to feed until the needle point is reached, the corresponding feedback means is pulled back until the leading end of the piled-in pile yarn returns to the selection section when the yarn is replaced, and then the clamping means is operated. In a gripping state, the tip of the pile yarn is set to be held at a predetermined standby position.

According to such a configuration, the other pile yarns other than the specific pile yarn selected for weaving are gripped by the corresponding clamping means. Will not be lost
More reliable pile yarn selection and exchange feeding can be realized.

According to a third aspect of the present invention, in order to achieve the second object, in the automatic hook drag loom of the first or second aspect, a pile yarn supply source and a yarn exchange supply device are provided at a fixed portion, At the time of yarn exchange, the hook machine is returned to a position facing the outlet of the yarn outlet pipe of the yarn exchange supply device to transfer pile yarn. According to this configuration,
Since it is not necessary to bear the weight of the pile yarn supply source and the yarn exchange supply device on the hook machine side, the entire traveling section on the hook machine side is light and can be moved lightly with a small driving force, and can be selected and replaced. Even if the number of pile yarns increases, the running property of the hook machine is not affected, so that high-quality multicolor weaving using a large number of pile yarns of different colors and materials can be easily realized.

According to a fourth aspect of the present invention, in the automatic hook drag loom according to any one of the first to third aspects, each of the pile yarn supply sources is provided between the installation portion of the clamp means and / or the feedback means of the yarn exchange supply device and the pile yarn supply source. A plurality of conduits through which the pile yarns are individually inserted are provided, and each conduit is provided with air introducing means for introducing air in a direction in which the pile yarns are pulled back. Therefore, in the yarn exchange after the completion of the weaving in the predetermined section, the pile yarns whose weaving has been completed are fed to the corresponding feeder.
At the time of pulling back by the operation of the back means, by introducing air into the above-mentioned conduit, the surplus derived amount of pile yarn accompanying this pulling can be quickly sent out to the pile yarn supply source side, whereby the clamping means and the feed It is possible to avoid a situation in which the extra lead-out portion of the pile yarn is entangled with the constituent members of the back means, peripheral members, and the like, thereby causing trouble. In particular, in the configuration in which the yarn exchange supply device is installed at the fixed portion as in the above-mentioned claim 3, the entrance of the yarn introduction pipe and the side of the yarn exchange supply device as the hook machine returns to the pile yarn transfer position. The pile yarn that has been drawn out between the outlet of the yarn outlet pipe becomes excessive, but this excess is absorbed by the return to the pile yarn supply source through the conduit together with the return movement of the hook machine. However, the surplus does not sag and cause no problem.

According to a fifth aspect of the present invention, in the automatic hook drag loom according to any one of the first to fourth aspects, the feed-back means of the yarn exchanging and feeding device includes a drive roller capable of rotating forward and reverse and a pile roller for each pile yarn. And a feed roller that is separated from and connected to the drive roller.The pile yarn sandwiched between the two rollers is fed and pulled back by the rotation drive of the drive roller, and the amount of rotation of the drive roller depends on the rotation amount of the drive roller. It is configured to set the tip position of the pile yarn at the time of feeding and pulling back. Therefore, the pile yarn can be reliably fed and pulled back, and the pile yarn feed amount in both operations can be accurately determined.

According to a sixth aspect of the present invention, in the automatic hook drag loom of the fifth aspect, the driving roller of the feedback means is formed of a single rotating body that is long in the axial direction. Are configured to individually move away from each other. Therefore, the configuration of the feedback means becomes extremely simple as compared with a case where a pair of a driving roller and a feed roller is provided for each pile.

According to the seventh aspect of the present invention, the above-mentioned fifth or sixth aspect is provided.
In the automatic hook drag loom of
A plurality of swinging rods pivotally supported at an intermediate portion in a swingable manner corresponding to each pile yarn, and driving means for individually swinging the swinging rods, one end of the swinging rod is clamped A movable holding portion forming a pair with the fixed holding portion of the means is formed, and a feed roller of a feedback unit is provided on the other end side of the swinging rod, and one of the movable holding portion and the feed roller is provided on the other side thereof. , The other is separated from its counterpart. In this case, the clamp means and the feed-back means corresponding to each pile yarn can be operated by one drive means. Therefore, as compared with a configuration in which both are individually operated, an actuator such as an air cylinder as the drive means is used. The number will be halved.

According to an eighth aspect of the present invention, in the automatic hook drag loom according to any one of the first to seventh aspects, a portion between the installation portion of the clamping means and / or the feedback portion of the yarn exchange and supply device and the selection portion is provided. A plurality of guide tubes through which the respective pile yarns are individually inserted are provided, and each guide tube is provided with an air introducing means for introducing air in the pile yarn feeding direction. Therefore, when the selected pile yarn is fed to the hook machine, the pile yarn is extended from the standby state in the selection section by the air pressure by the air introduction means at the same time as the feeding operation of the feedback means is started. This is ensured, and the tip will quickly enter the entrance of the yarn outlet tube.

According to a ninth aspect of the present invention, in the automatic hook drag loom according to any one of the first to eighth aspects, the selection section of the yarn exchanging and feeding device has a plurality of yarn inlets corresponding to the respective pile yarns at one end. In addition to having a single yarn outlet at the other end, the yarn inlet has a yarn merging portion connected to the yarn outlet via a separate passage and a funnel-shaped merging space. And In this configuration, mutual interference between the pile yarns can be reliably prevented, and the funnel-shaped space form effectively guides the air to the inlet of the yarn outlet tube by the air pressure of the pumping means. It will be able to send more reliably.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a principle of operation of a yarn exchange and supply device in an automatic hook drag loom of the present invention. In this figure, two pile yarns (1a) are used for explanation of the principle.
Although the portion corresponding to (1b) is shown as a representative, actually, the same configuration corresponding to each of a large number of pile yarns is arranged.

As shown, the pile yarns (1a) (1
b) are each composed of a composite yarn obtained by combining a plurality of single yarns unwound from a plurality of cones (21) of the pile yarn supply source (2), and the pile yarn supply source (2) More specifically, they are guided to the clamp section (C) through the conduits (3a) (3b)... And then sent to the feedback section (F) and the selection section (S). Then the conduit (3
a) (3b).. have air inlets (31a) (31b).
An air inlet (3) for introducing air in the retraction direction to each outlet side
2a), (32b)...

A pile yarn (1a) is attached to the clamp portion (C).
(1b) In correspondence with each of the fixed holding portions (4
0), and clamping means (4a) (4b)... Composed of a movable holding portion (42) that moves toward and away from the air cylinder (41) via the air cylinder (41). A drive roller (51) that rotates forward and reverse by a servomotor (50) corresponding to each of the pile yarns (1a) (1b). And feed-back means (5a) (5b). The selection section (S) holds the tips of the plurality of pile yarns (1a) and (1b) via the feed-back means (5a) and (5b) at a predetermined standby position, and controls the pile yarn groups in the standby state. And a funnel-shaped case (60) constituting a yarn merging section (6).
And a plurality of guide tubes (7a) and (7b) for introducing pile yarns (1a) and (1b) therethrough. The above case (6
0) has yarn inlets (61) arranged annularly along the periphery of its large-diameter end face, and pile yarns (1a) (1b)... From the feed-back portion (F). Are connected to one another, and a single thread lead-out pipe (9) connected to the hook machine (8) is connected to the end on the smaller diameter side. . And the guide tube (7
a) (7b) are provided with air introduction ports (71a) (71b)... for introducing air in the yarn feeding direction, and an air introduction pipe is provided at the center of the end face on the large diameter side of the case (60). (6
2) is connected.

Thus, the air inlets (31a) (31b)... And the air inlets (32) of the conduits (3a) (3b).
a) Introducing / stopping air to (32b) ..., movable holding portion (42) of clamping means (4a) (4b) ... and feed roller (53) of feedback means (5a) (5b) ... , Forward / reverse rotation of the servo motor (50), drive / stop of the servo motor (50), air inlets (71a) (71b) of guide tubes (7a) (7b) ... and air inlet tubes (6)
The switching operation of the introduction / stop of the air to 2) is automatically performed by a signal output from the control unit CPU.

In this yarn exchange / supply device, initially, all of the pile yarns (1a) (1b)... Are fixedly clamped (40) and movable clamped portions (42) of the clamping means (4a) (4b). ) So that each end is kept in a predetermined standby position in the selection section (S), that is, in a state where it is located in the yarn joining section (6) or in the guide pipes (7a) and (7b). . At this time, air is not introduced into any part, and the feedback means (5a) (5b)
All of the feed rollers (53) of the drive rollers (5)
1), the servomotor (50) is also stopped. When the pile yarn (1a) is selected as the weaving yarn by the hook machine (8), for example, the clamping means (4) is used.
a) is opened and the feedback means (5
Only the air cylinder (52) of (a) operates to sandwich the pile thread (1a) between the feed roller (53) and the drive roller (51), and the air inlets (31a) (71a)
The servo motor (50) rotates forward by a predetermined amount while sending air to the compressed air introduction pipe (62). This allows
The tip of the pile yarn (1a) waiting in the yarn joining portion (6) or in the guide tubes (7a) (7b) is a yarn outlet tube (9).
To the needle (8) of the hook machine (8) through the yarn introduction pipe (28) on the hook machine (8) side.
It is fed to the tip position of a) and is sandwiched by the feed roller mechanism (81) in the hook machine (8). When the servo motor (50) stops, the feedback means (5)
The feed roller (53) of (a) is separated from the drive roller (51), the feeding of air to the air inlets (31a) (71a) and the compressed air inlet pipe (62) is stopped, and the pile by the hook machine (8) is stopped. The weaving of the yarn (1a) becomes possible.

On the other hand, when the weaving of the required section with the pile yarn (1a) is completed and the yarn supplied to the hook machine (8) is replaced with, for example, the pile yarn (1b), only the feed-back means (5a) is used. Operates to pinch the pile yarn (1a), release the pinching of the feed roller mechanism (81) on the hook machine (8) side, and send the air to the air inlet (32a) while driving the servo motor (50). Is reversed by a predetermined amount. As a result, the pile yarn (1a) sent to the needle point of the hook machine (8) is pulled back to the selection section (S) including the yarn merging section (6), and the surplus derivation due to this pulling-back. Is sent out to the pile yarn supply source (2) through the conduit (3a). When the servo motor (50) stops, the pinching by the feedback means (5a) is released, and at the same time, the clamping means (4a) closes to grip the pile yarn (1a), and then the clamping means (4b) Open and feedback means (5
pile yarn (1b) between rollers (51) and (53) of b)
The servomotor (50) rotates forward by a predetermined amount while sending air to the air inlets (31b) (71b) and the air inlet pipe (62), and the pile yarn (1)
As in the case of a), the tip of the pile yarn (1b) is sent to the needle point of the hook machine (8), and the feedback means (5)
The weaving of the pile yarn (1b) becomes possible by releasing the pinching of b) and stopping the air supply to each part.

Hereinafter, an automatic hook drag loom according to an embodiment of the present invention will be described with reference to FIGS.
As shown in FIGS. 2A and 2B, this loom has a rectangular machine frame (11) for disposing the base fabric (10) in a horizontally stretched state.
loom body (11) provided with a), and its machine frame (11a)
The stand (12
a) a yarn exchange supply device (12) installed above.

In the loom main body (11), a first traveling platform (13) is movably mounted on a machine frame (11a) along a longitudinal direction (X direction). The second traveling platform (14) with the hook machine (8) attached to the machine frame (11)
a) is mounted so as to be movable along the short side direction (Y direction), and has a rectangular support frame (11) inside the machine frame (11a).
b) is detachably arranged, and the support frame (11b) supports the wooden frame (10a) on which the base cloth (10) is stretched in a horizontal state. Thus, the hook machine (8) is supported by a pair of columns (16) and (16) erected on the turntable (15) on the second carriage (14) so as to be able to move up and down, and is driven by a servomotor (15a). The turntable (15) is configured to be rotatable by driving, and according to design data and a program input to an NC device (not shown), the base cloth (10) is driven by the running of the both carriages (13) and (14). The pile yarn (1) is woven into the base fabric (10) while sequentially moving upward to a designated position.

Further, below the first traveling platform (13), two bearing rollers (17) (17) provided with a large number of flanges (17a)... The mounted bearing frame (18) is arranged. This support frame (18) is provided with a connecting body (18) attached to both ends in the longitudinal direction.
a) The wheels (18b) and (18b) of (18a) are
Brackets fitted to rails (11c) (11c) disposed inside 1a) and brackets suspended from both longitudinal ends of the first traveling platform (13) via the coupling bodies (18a) (18a). (13a) It is connected to (13a) so as to be able to ascend and descend, and moves in the X direction in synchronization with the first traveling platform (13) while moving the stretched base fabric (10) with the needle of the hook machine (8). Are supported from below by the support rollers (17) and (17) at the positions on both sides of the base cloth (1).
0) is suppressed, and the weaving accuracy of the target pattern is increased. Then, rail (11c)
(11c) is lower at both ends than the position below the support frame (11b), and the position of the support frame (18) is lowered at this lower portion, so that contact with the support frame (11) is avoided.

In FIG. 2, (19a) is a ball screw for moving the first traveling platform (13) and the support frame (18) in the X direction, and the power of the servomotor (19b) is controlled by the gearbox (19c), It is transmitted via the connection shaft (19d) and is driven to rotate. Reference numeral (20a) denotes a ball screw for moving the second traveling platform (14) in the Y direction on the first traveling platform (13), and is rotated by a servomotor (20b).

The yarn exchange and supply device (12) comprises a clamp section (C), a feedback section (F), and a selection section (S), and is provided on the wall (22) of the pile yarn supply source (2). Each of a plurality of pile yarns (1) unwound from a plurality of cones (21) attached thereto is individually guided to a clamp portion (C) through a conduit (3) and then a feedback portion (F) is connected. Selection section (S)
To be sent to In FIG. 1, the clamp section (C), the feed-back section (F), and the selection section (S) are arranged in a horizontal direction so that the relationship with the loom main body (11) can be easily understood. However, as shown in FIGS. 3 to 5, in actuality, the clamp portion (C) is disposed in the vertical direction on the base frame (23) having a vertical shape and a rectangular shape in a plan view, with the clamp portion (C) at the top. Further, unlike each of the cones (21) shown in FIG. 1 used in the description of the principle, the pile yarn (1) itself manufactured in advance using a plurality of yarns is wound.

As shown in detail in FIG. 3, each conduit (3)
Is bent in a substantially inverted U-shape in which the inlet side of the pile yarn (1) is lengthened, and an air inlet (31) for introducing air to the inlet side in the feed direction has a direction in which air is drawn back to the outlet side. The horizontal frame (23a) (2) made of an angle material at the top of the base frame (23) at the air inlets (31) and (32) is provided in a branch shape.
3b). A cup-shaped yarn receiver (24) is disposed between each conduit (3) and the pile yarn supply source (2), and the pile yarn (1) unwound from the cone (21).
Enter the respective conduits (3) via the thread receiver (24).

In the clamp section (C), pile yarns (1)...
Of the clamping means (4).. Corresponding to each of the horizontal frame (2)
3b). In the feed-back section (F), a drive roller (51) made of a single long cylindrical material having a large number of grooves along the axial direction on the surface is provided with a bearing (51a).
A servomotor (50) that is horizontally arranged along the position directly below the fixed holding portion (40) via (51a), and has one end thereof for rotating the driving roller (51) forward and backward.
Is installed. Thus, the movable holding portion (42) of each clamp means (4) and the feed roller (53) of each feed-back means (5) are separately provided by an air cylinder in the principle description according to FIG. Although the forward and backward operations are performed, here, a configuration is adopted in which both (42) and (53) are operated by a single driving means.

That is, brackets (25a) corresponding to each of the pile yarns (1) are arranged on the horizontal frame (23a).
Is fixed, and a swinging rod (25) is attached to each bracket (25a).
Is pivotally supported at an intermediate portion so as to be swingable in a vertical plane, a movable holding portion (42) of a clamp means (4) is provided at an upper end thereof, and a feed roller (53) of a feedback means (5) is provided at the lower end thereof. ) Is attached, and the swinging rod (25) is swingably displaced by an air cylinder (26), so that the movable holding section (42) comes into contact with the fixed holding section (40) and the feed roller (53). Is apart from the driving roller (51), the feed roller (53) is the driving roller (51).
The movable holding portion (42) is separated from the fixed holding portion (40) in contact with the movable holding portion (42) and the feed roller (5).
3) are both a fixed holding section (40) and a driving roller (5).
It is configured to be switched to three positions, i.e., away from 1). Therefore, in this configuration, the required number of driving means such as an air cylinder is reduced by half, and the structure is extremely reduced as compared with a case where the movable holding portion (42) and the feed roller (53) are individually operated. Become simple.

As shown in detail in FIG. 6, a funnel-shaped case (60) constituting the yarn merging portion (6) is installed in the selection portion (S), and each of the pile yarns (1). The lower ends of the guide pipes (7) with the upper end opening directly under each of the feedback means (5) correspond to the case (6).
0) are connected to the yarn inlets (61) which are provided in a ring shape along the periphery of the large-diameter upper end surface.
Each of the yarn inlets (61) is connected to an individual passage (61a) provided in the case and a funnel-shaped converging space (61b) to form a single unit at the lower end of the case (60) on the small diameter side. Is communicated with the yarn outlet (63). In addition, this yarn outlet (6
3) is connected to one thread outlet pipe (9). on the other hand,
An air introduction pipe (62) provided at the center on the large diameter side of the case (60) is connected to an air ejection nozzle (62a) penetrating through the center of the case and facing the yarn outlet (63).

Each of the guide tubes (7) is provided with an air inlet (71) (see FIG. 3) for introducing air in the yarn feeding direction at an upper portion, and a base frame is provided at the air inlet (71). The horizontal frame (23) made of the angle material of (23)
c). An air inlet (27) for introducing air in the yarn feeding direction is provided at a base side of the yarn outlet pipe (9).
(See FIG. 5) to constitute the pressure feeding means.

In the yarn exchange and supply device (12) having the above-described structure, when the yarn is not supplied to the hook machine (8), the color and the material are different as described in the explanation of the principle. All of the pile yarns (1)... Are clamped by the fixed clamping portion (40) and the movable clamping portion (42) of the clamping means (4), respectively, and the leading end of each of the pile yarns (1) is in or at the yarn joining portion (6). Waiting in a state located in the upper guide tube (7),
No air is introduced into any of the air inlets (31), (32), (71), and (27), and the servomotor (50) is also stopped. At this time, the tip of each pile yarn (1) is connected to each passage (6) in the case (60) at the yarn merging portion (6), for example.
1a) and does not interfere with each other.

When the yarn is fed to the hook machine (8), the hook machine (8) is first moved to the yarn transfer / feed device (12) in the movable range thereof. Wait in position. In this standby position, as shown by the imaginary line in FIG. 5, the entrance of the yarn introduction pipe (28) provided on the hook machine (8) side is connected to the yarn outlet pipe (9) on the yarn exchange and supply device (12) side. It is set to face the exit. Next, the pile yarn (1) to be used for weaving is selected, and as described in the explanation of the principle, the corresponding clamping means (4) is opened, and the roller (53) of the feedback means (5) is selected.
The pile yarn (1) is pinched between (51) and the air introduction ports (31), (71), (27) and the air introduction pipe (6).
2) The servo motor (50) is rotated forward by a predetermined amount while sending air to (2). Thereby, the tip of the pile yarn (1) waiting in the yarn joining portion (6) extends to the inlet side of the yarn outlet tube (9) by receiving air pressure, and the yarn outlet conduit (9) and It is sent to the needle point of the hook machine (8) through the yarn introduction pipe (28) on the hook machine (8) side, and is sandwiched by the feed roller mechanism (81) on the hook machine (8) side.
Then, when the servo motor (50) is stopped, the pinching of the feedback means (5) is released, and the air introduction ports (31), (71), (27) and the compressed air introduction pipe (62) are formed.
When the feeding of the air to the hook is stopped, the above-described weaving by the hook machine (8) becomes possible.

When the weaving of the required section with the pile yarn (1) is completed and the yarn to be supplied to the hook machine (8) is replaced, the conduit (3) corresponding to the pile yarn (1) whose weaving has been completed is completed. )) While sending air to the air inlet (32).
The hook machine (8) is returned to the yarn transfer position. Thereby, the yarn introduction pipe (28) on the hook machine (8) side
The excess of the pile yarn (1) drawn out between the inlet of the yarn and the outlet of the yarn outlet pipe (9) on the side of the yarn exchange and supply device (12) moves to the yarn transfer position of the hook machine (8). As a result, the yarn is returned to the yarn exchange supply device (12) side, sent out to the pile yarn supply source (2) through the conduit (3), and accumulated in the yarn receiver (24). It is possible to reliably avoid a situation in which the device (12) sags and becomes entangled with the machine frame (11a) and causes trouble.

When the hook machine (8) returns to the yarn transfer position, only the feedback means (5) corresponding to the pile yarn (1) for which weaving has been completed is operated to pinch the pile yarn (1). Servo motor (50) in a state where the pinching of the feed roller on the hook machine (8) side is released
Is reversed by a predetermined amount, and the tip of the pile yarn (1) sent to the needle point of the hook machine (8) is pulled back to the yarn joining portion (6). At this time, since the air supply to the air introduction port (32) of the conduit (3) is continued, the surplus withdrawal due to the withdrawal also accumulates in the yarn receiver (24) through the conduit (3), and the surplus withdrawal A situation in which the entanglement with each part of the clamp means (4) or the feedback means (5) or the peripheral part and a trouble may be reliably avoided. When the pull-back of the pile yarn (1) is completed, the same yarn feeding operation as described above is performed for the pile yarn (1) used for the next weaving, thereby completing the yarn exchange.

When the hook machine (8) is at the yarn transfer position, the length of the supply path of the pile yarn (1) from the yarn junction (6) to the needle point of the hook machine (8) is constant. Because there is a drive roller (5) by a servo motor (50)
By setting the rotation amount in 1), it is easy to always keep the tip of the pile yarn (1) at a fixed position at the end of the yarn feeding and pulling back. In the above embodiment, the air introduction port (71) of the guide tube (7) stops the air introduction except at the time of feeding the yarn. However, the feed-back portion of the standby pile yarn (1). In order to maintain the tension state in F), air may be constantly introduced.

The automatic hook drag loom of the present invention also includes a configuration in which the pile yarn supply source (2) and the yarn exchange supply device (12) are mounted on a movable portion for moving the hook machine (8). However, as in the embodiment, the yarn exchange and supply device (1)
If 2) is installed at the fixed portion, the entire running portion on the hook machine (8) side becomes lighter and can be moved lightly with small driving force, and the number of pile yarns (1) to be selectively replaced increases. Does not affect the running performance of the hook machine (8), so that high-quality multicolor weaving using a large number of pile yarns (1) having different colors and materials can be easily performed. Further, in the embodiment, the configuration in which the loom body (11) is provided with the bearing frame (18) that moves in synchronization with the first traveling platform (13) is shown. However, in the present invention, the bearing frame (18) may be omitted. Good.
Further, in the present invention, the clamping means (4) and the feeder
The gripping / releasing operation of the back means (5) is not limited to the illustrated air cylinder, and various other driving mechanisms such as a cam mechanism can be employed, and the shape and arrangement of each component including the loom body (11) side. The detailed configuration such as the operation mechanism and the like can be variously changed besides the embodiment.

[0039]

According to the first aspect of the present invention, as an automatic hook drag loom, the selection and exchange of pile yarn to be supplied to the hook machine for weaving into the base cloth are all automatically performed by the yarn selection and exchange device. Therefore, it is possible to reduce labor in manufacturing embroidered carpets and the like, and to improve product yield and production efficiency.

According to the second aspect, when the pile yarn is replaced, a more reliable selective feeding operation of the selected pile yarn can be realized.

According to the third aspect of the present invention, since the automatic hook drag loom is provided with the yarn selecting and changing device at the fixed portion, the hook can be moved lightly with a small driving force, and the weaving speed can be increased. And the operating cost can be reduced, and the number of pile yarns to be selected is not restricted at all, so that high-quality multicolor weaving using various types of pile yarns with different colors and materials can be easily performed. Things are provided.

According to the fourth aspect of the present invention, in the above automatic hook drag loom, when the pile yarn that has been woven has been pulled back from the hook machine at the time of yarn replacement, the pulled back portion is quickly sent to the pile yarn supply source side. In addition, even in a configuration in which the yarn exchange and supply device is installed at the fixed part, the excess amount of pile yarn that accompanies the return of the hook machine to the pile yarn transfer position is absorbed by being sent to the pile yarn supply source side. Thus, there is no risk that the excess pile yarn associated with the pull-back will be entangled with the various parts of the yarn selection / exchange device, or the excess amount associated with the return of the hook machine will be sagged and entangled with the machine frame or the like.

According to the fifth aspect of the present invention, in the above automatic hook drag loom, the yarn exchange supply device is provided with the feedback means including the drive roller and the feed roller, so that the pile yarn is supplied during the yarn exchange. In addition, the pull-back operation becomes more reliable, and the feed amount of the pile yarn in both operations can be accurately determined.

According to the sixth aspect of the present invention, in the automatic hook drag loom in which the yarn exchange and supply device is provided with the above-mentioned feed-back means comprising the drive roller and the feed roller, the structure of the feed-back means becomes extremely simple. In addition, the manufacturing cost of the yarn exchange and supply device can be reduced.

According to the seventh aspect of the present invention, in the automatic hook drag loom described above, the clamp means and the feedback means required for the yarn exchange and supply device can be operated by one drive means, and both can be individually operated. The number of actuators such as air cylinders as driving means is halved as compared with the configuration for operation, thereby significantly simplifying the structure and greatly reducing the manufacturing cost.

According to the eighth aspect of the present invention, there is provided an automatic hook drag loom capable of more easily and surely feeding pile yarns to a hook machine.

According to the ninth aspect of the present invention, in the automatic hook drag loom, particularly, the tips of the pile yarns in the selection section of the yarn exchanging and feeding device hardly interfere with each other, and the selected pile yarns are transferred to the hook machine. What can be delivered reliably is provided.

[Brief description of the drawings]

FIG. 1 is a perspective view schematically showing an operation principle of a yarn exchange supply device in an automatic hook drag loom according to the present invention.

FIGS. 2A and 2B show the entirety of an automatic hook drag loom according to an embodiment of the present invention, wherein FIG. 2A is a schematic side view and FIG.

FIG. 3 is a vertical cross-sectional front view of the yarn exchange and supply device in the automatic hook drag loom.

FIG. 4 is a cross-sectional plan view of the yarn exchange supply device.

FIG. 5 is a vertical sectional side view of the yarn exchange supply device.

FIG. 6 is a longitudinal sectional view of a yarn merging portion in the yarn exchange supply device.

[Explanation of symbols]

1, 1a, 1b ... pile yarn 2 ... pile yarn supply source 3, 3a, 3b ... conduit 31, 31a, 31b ... air introduction port (air introduction means) 32, 32a, 32b ... Air inlets (air introduction means) 4, 4a, 4b Clamping means 40 Fixed holding section 41 Air cylinder 42 Movable holding section 5, 5a, 5b Feed back Means 50 ··· Servo motor 51 ··· Drive roller 52 ··· Air cylinder 53 ··· Feed roller 6 ··· Thread converging section 61… Thread inlet 63… Thread outlet 62… Air introduction Pipes (pressurizing means) 7, 7a, 7b ... Guide pipes 71, 71a, 71b ... Air inlet (air introducing means) 8 ... Hook machine 8a ... Needle 9 ... Thread outlet pipe 10 ... Base cloth 11 ... Loom main body 11a ... Machine frame 12 ... Thread exchange supply device 13 ... First traveling platform 14 ... Second traveling platform 15 ... Rotating disk 21 ... Cone 25 ... Swing rod 26 ... air cylinder (driving means) 27 ... air inlet (pressure feeding means)

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Shuhei Tatsumura 14-19 Nishiekimaecho, Ibaraki-shi, Osaka Inside Japan Labor Saving Machinery Co., Ltd.

Claims (9)

[Claims] 1. A first traveling platform that is movable in the X direction above a stretched base fabric, a second traveling platform is movably provided in a Y direction orthogonal to the X direction, and the second traveling platform is provided. A hook machine for weaving pile yarns into the base cloth is provided rotatably, and a yarn exchange supply device for supplying and exchanging pile yarns to the hook machine is provided. A selection unit that holds the tips of the plurality of pile yarns supplied from the source at a predetermined standby position and feeds one pile yarn selected from a standby pile yarn group from a single yarn outlet; and a pile yarn. Feedback means intervening in the yarn feeding path from the supply source to the selection unit for individually feeding each pile yarn and pulling it back in the opposite direction, and pile yarn from the yarn outlet of the selection unit to the hook machine A yarn guide tube for guiding
And a control device for feeding one of the pile yarns in the selection section to the hook machine through the yarn outlet pipe by air pressure, and a control device, wherein the control device is selected from a pile yarn group in the selection portion. When sending one pile yarn to the hook machine,
The corresponding pressure feeding means is operated, and the corresponding feedback means is fed until the tip of the pile yarn reaches the needle point of the hook machine. An automatic hook drag loom which is set so as to hold the leading end of the pile yarn at a predetermined standby position after pulling back the corresponding feed-back means until returning to the predetermined position. 2. A second traveling platform is provided on a first traveling platform that is movable in the X direction above the stretched base cloth, and is movable in a Y direction that is orthogonal to the X direction. A hook machine for weaving pile yarns into the base cloth is provided rotatably, and a yarn exchange supply device for supplying and exchanging pile yarns to the hook machine is provided. A selection unit that holds the tips of the plurality of pile yarns supplied from the source at a predetermined standby position and feeds one pile yarn selected from a standby pile yarn group from a single yarn outlet; and a pile yarn. Clamp means for individually gripping each pile yarn via a yarn feeding path from a supply source to a selection section; and forcibly feeding each pile yarn individually via the yarn feeding path. Feedback means to pull back in the opposite direction A yarn lead-out pipe for guiding the pile yarn from the yarn outlet of the section to the hook machine, a feeding means for feeding one of the pile yarns in the selection part to the hook machine through the yarn lead-out pipe by air pressure, and a control device. When the above-mentioned control device sends one pile yarn selected from the pile yarn group in the selection unit to the hook machine,
Only the corresponding clamp means is in the open state to operate the pressure feeding means, and the corresponding feedback means is fed until the tip of the pile yarn reaches the needle point of the hook machine. An automatic hook which is set so as to hold the tip of the pile yarn at a predetermined standby position by pulling back the corresponding feedback means until the tip of the pile yarn returns to the selection portion, and then holding the clamp means in a gripping state. Drag loom. 3. A pile yarn supply source and a yarn exchange supply device are provided at a fixed portion, and when the yarn is exchanged, the hook machine is returned to a position facing an outlet of a yarn exit pipe of the yarn exchange supply device to transfer pile yarn. The automatic hook drag loom according to claim 1 or 2, wherein the automatic hook drag loom is performed. 4. A plurality of conduits through which each pile yarn is individually inserted is provided between a pile yarn supply source and an installation portion of a clamping device and / or a feedback device of the yarn exchange supply device. The automatic hook drag loom according to any one of claims 1 to 3, further comprising air introducing means for introducing air in a direction in which the pile yarn is pulled back. 5. The feed-back means of the yarn exchange / supply device comprises a drive roller capable of rotating forward and backward, and a feed roller provided for each pile yarn and operating to separate from and contact the drive roller. The pile yarn sandwiched between the rollers is fed and pulled back by rotating the driving roller, and the tip position of the pile yarn at the time of feeding and pulling back is set by the rotation amount of the driving roller. The automatic hook drag loom according to any one of claims 1 to 4. 6. A drive roller of the feed-back means is constituted by a single rotating body which is long in the axial direction, and a feed roller corresponding to each pile yarn is configured to individually move toward and away from the drive roller. 6. The automatic hook and drag loom according to claim 5, wherein 7. A yarn exchange supply device comprising: a plurality of swinging rods pivotally supported at an intermediate portion in a swingable manner corresponding to each pile yarn; and driving means for individually swinging the respective swinging rods. Wherein one end side of the swinging rod constitutes a movable holding portion paired with a fixed holding portion of the clamp means, and a feed roller of the feed back means is provided on the other end side of the swinging rod, 7. The automatic hook drag loom according to claim 5, wherein when one of the movable holding portion and the feed roller comes into contact with the other side, the other is separated from the other side. 8. A plurality of guide tubes for individually inserting each pile yarn is provided between a selection portion and an installation portion of a clamping device and / or a feedback device of a yarn exchange / supply device. The automatic hook drag loom according to any one of claims 1 to 7, further comprising air introduction means for introducing air in a pile yarn feeding direction. 9. The selection section of the yarn exchange and supply device has a plurality of yarn inlets corresponding to respective pile yarns at one end in an annular arrangement, and a single yarn outlet at the other end. The automatic hook drag loom according to any one of claims 1 to 8, further comprising a yarn merging portion connected to the yarn outlet via an individual passage and a funnel-shaped merging space.