KR20010076194A - Apparatus for Treating Weft End in Shuttleless Loom - Google Patents

Abstract

PURPOSE: To provide a weft end-treating device capable of surely catching weft and stably and surely carrying out application of tension and yarn end treatment by a simple constitution. CONSTITUTION: This weft end treating device comprises a body arranged on the side opposite to selvage side on anti-yarn feed side according to a cutter for cutting weft end and supported by a frame of a loom and a transferring member for transferring end of weft subjected to picking toward cloth fell side together with transfer of a reed while coming into contact with weft portions on both sides of the body. The body has a fluid passage extending in the direction crossing with oscillating direction of the reed and has a slid opening in the extending direction of the weft end on transferring passage of the weft end and extending to the fluid passage. The body and the transferring member are kept in position relationship in which weft end is introduced into the slit prior to beating of weft in cloth width area.

Description

Apparatus for Treating Weft End in Shuttleless Loom}

Field of invention

TECHNICAL FIELD The present invention relates to a weft stage treatment apparatus for a drumless loom such as a fluid injection loom, and more particularly, to a weft stage treatment apparatus having a tensioning function and a division treatment function to the weft yarn.

Background of the Invention

As a division system of the weft division which combines the tensioning function to tension the encased weft yarn prior to the body needle and the division processing function of capturing and discharging the weft end portion by fluid without using the division treatment yarn. There are some suction pipes which suck the water on the side of the semi-finished yarn (Patent Nos. 4-26463 and JP-A-52-42375). In this prior art, the suction pipe has a suction port extending in the inclined movement direction, and the suction port extends from a position at which the tip of the enclosed weft thread reaches to a position including immediately before.

In the above prior art, since a suction tube uses a suction tube wide open, sufficient tension cannot be applied to the weft yarn, and only a suction tube cannot impart satisfactory tension to the weft yarn. In order to provide sufficient tension with only the suction pipe, a large-capacity blower and the like are required, and therefore, it is not suitable for the original purpose of eliminating the cutting process yarn and reducing the running cost.

In order to solve the above problem, in the prior art, it is necessary to add another mechanism for applying tension or maintaining tension to the weft yarn. However, such a configuration not only complicates the configuration, but also makes it difficult to adjust the tension applied to the weft yarn.

One of the other weft end treatment devices that combines the tensioning and wetting process of the weft yarn, and arranges the ejection and suction pipes of the fluid facing the moving direction of the inclined side on the semi-finished side, between the ejection pipe and the suction pipe. There is a formation of jet streams (Special Office 47-42075).

In the other conventional art, the ejection pipe and the suction pipe are spaced in the inclined movement direction from the position where the tip of the inflated weft reaches to the position including the clothfell. The tip of the encased weft arrives directly in the jet stream formed by the ejection pipe, and is introduced into the suction pipe aboard the jet stream.

However, in the other prior art, since the tip of the weft that enters between the blowoff pipe and the suction pipe directly strikes the jet, the tip of the weft of the weft is very likely to be bounced off by the jet. As a result, the weft end is not introduced into the suction pipe, and no tensioning or division treatment is performed at all.

SUMMARY OF THE INVENTION An object of the present invention is to provide a weft yarn treating apparatus having both a tensioning function and a step treating function for the weft yarn, in which a weft yarn is reliably picked up with a simple configuration, and a stable and reliable tensioning and cutting process is performed.

The above and other objects of the present invention can be achieved by the present invention described below. Hereinafter, the content of the present invention will be described in detail.

1 is a side view showing an embodiment of a gastric processing apparatus according to the present invention.

FIG. 2 is a plan view of the weft cutting processor shown in FIG.

3 is a view showing an embodiment of a main body.

4 is a plan view of the main body shown in FIG.

5 is an enlarged view of the main body shown in FIG.

6 is a sectional view of the main body shown in FIG.

FIG. 7 is a view for explaining the operation of the weft-stage treatment apparatus shown in FIG. 1, (A) shows a first step, and (B) shows a position of the weft with respect to the main body in the first step. (C) shows the second process, (D) shows the position of the weft with respect to the main body in the second process, (E) shows the third process, and (F) It is a figure which shows the position of the weft with respect to a main body in the process of 3.

8 is a view showing another embodiment of the main body.

9 is a view showing another embodiment of the arrangement position of the main body with respect to the immediately preceding;

Fig. 10 is a side view of the stomach treatment apparatus showing another embodiment of the arrangement position of the main body with respect to the immediately preceding;

* Explanation of major symbols *

10: weft processor 12, 70: main body

14, 80: transfer member 16: cutter

28: frame of the loom 30: body

40, 74: slit 42: space part

44, 76 fluid passage 46: upstream region of the fluid passage

48: downstream region of the fluid passage 50: arc guide surface

78: Information CF: Immediately

CL: Direct WE: Weft

The weft end processing apparatus of the drumless loom according to the present invention is disposed on the opposite side to the side of the semi-finished side with respect to the cutter for cutting the weft end, the main body supported by the frame of the loom, and the end of the enclosed weft yarn both side weft of the main body While in contact with the portion, it includes a conveying member for conveying toward the immediate side in accordance with the movement of the body.

The main body has a fluid flow path extending in a direction intersecting with the swinging direction of the body, and at the same time, the main body has a slit that opens in the extending direction of the upper end portion on the movement path of the upper end portion and reaches the fluid flow path. The main body and the transfer member are maintained in a positional relationship in which the weft end portion is introduced into the slit prior to the body needle of the weft yarn in the straight width region.

The end of the encased weft yarn is moved to the front side by the transfer member moving in accordance with the forward movement of the body, and is introduced into the slit opening on the movement path and extending to the fluid flow path. At this time, since the upper end portion is conveyed in the state in which both sides of the main body are in contact with the conveying member, the upper end portion is reliably conveyed in the slit and reliably reaches the action region of the fluid in the main body through the slit.

When the upper end portion reaches the fluid action region in the main body, it is reliably introduced into the fluid flow path in the main body and is bent, thereby tensioning by friction with the fluid and the wall of the fluid flow path. The weft end portion is introduced into the slit before the body needle where the weft thread is constrained to the inclination, whereby the weft catching and tensioning are performed stably and reliably. In addition, despite the need for a fluid flow path that operates extensively, and thus, the running cost is reduced, sufficient tension is applied to the weft yarns.

As described above, according to the present invention, a fluid flow path extending in a direction intersecting with the swinging direction of the body, and a slit for guiding the upper end portion to the fluid flow path are formed in the main body, and the upper end portion is passed through the slit by the transfer member. Since the transfer to the working area is carried out, the weft is securely captured with a simple configuration, and stable and reliable tensioning and division processing are performed.

Preferably, the transfer member is a member that swings at the same position as the body in the swinging direction of the body, and the weft inlet side end of the slit is located on the inclined discharging side rather than immediately before. By doing so, another mechanism for introducing the weft end portion into the slit prior to the body needle becomes unnecessary, and the configuration becomes simpler.

It is preferable that the inner end of the slit is located on the inclined discharging side rather than immediately before. In this case, since the weft end portion is captured by the fluid passing through the fluid flow path on the inclined delivery side rather than immediately before, the weft end portion is bent between the straight end and tension is further applied to the weft yarn.

The inner end of the slit is preferably located near the center of the fluid flow path. Doing so causes the fluid to act on the weft yarn at a position where the flow is strong, thus making the introduction and capture of the weft yarn into the fluid passage more secure.

The fluid flow path may be a region downstream from the slit and may have an obtuse angle with respect to the slit. By doing so, since the angle which forms the flow of the downstream fluid in which the weft is introduced with respect to the inlet direction of the weft to the slit is large, the weft is introduced into the fluid flow path more smoothly.

The fluid flow path may have a region upstream than the slit, and the region downstream may have a larger diameter than the region upstream. By doing so, since the flow of the fluid from the upstream region to the downstream region is smooth, compared with the case where the diameters of both regions are the same, the division is smoothly introduced into the downstream region.

Example

1 to 6, the weft end treatment device 10 includes a main body 12 on a block and a transfer member 14 for advancing the weft end. The encased weft and its ends are moved by the body 30 and the conveying member 14 from right to left in a state perpendicular to the ground in Figs. 1, 3, 5 and 6, respectively.

The main body 12 is disposed on the side opposite to the straight end CL side of the semi-finished yarn side (downstream of the weft moving side) with respect to the weft cutting cutter 16, the waterproof plate 18, and the filler 20. It is supported by the frame 28 of the loom through the stay 22, the bracket 24, the temple bar 26, and the like.

The conveying member 14 is attached to the lead holder 34 so as to move the semi-finished side end of the inlaid weft yarn toward the immediately preceding CF in accordance with the movement of the body 30. The lead holder 34 is attached to the locking shaft 38 by the sleigh sword 36 and is also rocked by the locking shaft 38 to swing the conveying member 14 together with the body 30.

As shown in Fig. 3 to Fig. 6, the main body 12 has a horizontal U-shaped slit 40 into which the upper end portion is introduced, a space portion 42 to which a fluid for cutting process is supplied, and a space portion at the upper end portion. It has a fluid flow path 44 which connects to 42 and communicates with it. The fluid flow path 44 is constituted by an upstream flow path, i.e., an upstream area 46 and a downstream flow path, i.e., a downstream area 48, formed in the same axis.

The slit 40 is open to both sides in the thickness direction (indentation direction) of the main body 12, and is open to the upstream side (inclination sending side) of the inclined traveling direction. The opening end of the weft inlet side end of the slit 40 is connected to the upper and lower arc-shaped guide surface 50 formed in the main body 12 to guide the weft end to the slit 40. The opening / closing side end (inner end) of the slit 40 reaches the upper portion of the downstream region 48 and connects to the downstream region 48 and is located near the center of the downstream region 48.

The fluid injection pipe 52 is fitted to the main body 12 by screwing one end thereof into the space 42 and being screwed into the screw hole 54 (not shown). The pipe 52 is connected to a compressed fluid supply device (not shown) such as a pump, a blower, and supplies a fluid such as water and air.

The weft catching pipe 56 sandwiches its end portion in the downstream region 48 and is attached to the main body 12 by a screw (not shown) that is screwed into the screw hole 58. The pipe 56 is connected to yarn recovery means (not shown), and the weft end portion is discharged from the yarn recovery means together with the fluid after being cut from the portion of the straight area. When the fluid for weft cutting is a liquid, it is preferable that the liquid is recovered by the yarn recovery means and circulated so as to be used for the division treatment again.

The upper and lower regions 46 and 48 are formed such that the axis of the downstream region 48 is larger than 90 degrees, that is, an obtuse angle with respect to the slit 40. It is preferable that the diameter D1 of the upstream region 46 and the inner diameter D2 of the downstream region 48, especially the pipe 56, have a relationship of D1 < D2.

The stay 22 is fixed to the main body 12, and has the horizontal U-shaped cutout 60 which opens to the downstream side as shown in FIG. The stay 22 is a bracket 24 by a plurality of bolts 62 shown in Figs. 1 and 2 using the notch 60 so that the slit 40 of the main body 12 extends in the inclined traveling direction. ) Is attached. The position of the main body 12 in the running direction of the inclination can be changed or adjusted by changing or adjusting the attachment position of the stay 22 to the bracket 24.

The position of the main body 12 in the inclined traveling direction is arrange | positioned so that the inner end of the slit 40 may be located in the inclined sending side (inclined traveling direction upstream) rather than immediately before CF in the example shown. However, since the tension applied to the inclination varies depending on the distance between the inner end of the slit 40 and the immediately preceding CF in the traveling direction of the inclined, the position of the main body 12 in the inclined traveling direction is a kind of weft yarn. In this case, it is set and maintained in a proper position according to the tension to be applied.

The conveying member 14 is a plate-shaped member attached to the lead holder 34 so that in the illustrated example, it is outward from the straight end CL on the semi-finished side and in the same position as the position of the body 30 in the inclined travel direction. to be. In the illustrated example, the conveying member 14 is formed using one or more plate-shaped members, and the one or more notches that the main body 12, the cutter 16, the waterproof plate 18, the filler 20, etc. can pass through. 64) (see FIG. 2). However, the conveying member 14 may be the body 30 itself, may extend the body 30 to the position shown, and may have the above-mentioned notch 64 by slotting a body knife.

The cutter 16 is already known with high accuracy and mobility. Therefore, the high precision is attached to the cutter bracket 66, and the movable degree is supported by the cutter bracket 66 so that a pivotal motion is possible. The movable degree is rocked with respect to the high precision by the drive mechanism including the plurality of rocking arms 68 to cut the weft thread.

The waterproof plate 18 is attached to the filler 20 in order to prevent the filler 20 from malfunctioning under the influence of water, which is a fluid for filling in the case of a water jet loom. However, in the case of an air jet loom or a filler of a type that is not affected by water even in a water jet loom, the waterproof plate 18 may be omitted. The filler 20 is a conventional sensor for detecting that the weft thread has entered the predetermined position, and is attached to the temple bar 26.

Referring to Fig. 7, the operation of the weft cutting unit 10 will be described.

The encased weft WE extends beyond the main body 12 to the front side of the body 30 and the conveying member 14 as shown in Figs. 7A and 7B. The weft WE is conveyed forward by the body 30 toward the immediately preceding CF. At this time, the weft end portion located outside the straight end CL on the semi-finished yarn side is caught by the transfer member 14 and is conveyed forward (arrow direction) by the transfer member 14.

Subsequently, the weft end portion of the weft yarn WE is introduced from the opening side end in the slit before being immersed in the immediately preceding CF, as shown in FIGS. 7C and 7D, and the inside of the slit 40 It is further transported forward to reach the operating region of the compressed fluid flowing in the body 12. At this time, since the weft end portion is in contact with the conveying member 14 on both sides of the slit 40 in the advancing direction (indentation direction) of the weft yarn, the weft end portion is reliably introduced into the fluid action region without being ejected by the compressed fluid. It is conveyed to the inner end of the slit 40 reliably. In addition, since the weft import port side end of the slit 40 is located on the inclined discharging side rather than immediately before CF, the weft end portion is introduced into the slit 40 before the body needle of the weft yarn WE to immediately before CF. No other mechanism is needed, and the configuration is simplified.

Subsequently, the weft end portion enters the downstream region 48 and the weft trapping pipe 56 by the pressurized fluid, which is securely captured and reliably tensioned. As a result, the weft end portion is captured by the compressed fluid before being restrained by the oblique heat, and sufficient tension acts on the weft yarn WE in the straight width region.

Thereafter, as shown in Figs. 7E and 7F, the weft yarns WE are immersed in the immediately preceding CF with sufficient tension. The tension to the weft yarn WE is not only imparted by the compression fluid, but also by the bending of the weft end portion caused by the inner end of the slit 40 located on the inclined discharging side rather than immediately before CF. In addition, the trapping and holding of the weft end part are performed not only by the pressurized fluid, but also by the bending of the weft end part and the friction force between the weft end part and the wall of the fluid flow path 44.

Tension and seizure of the gastric tip is maintained even after the body needle because the traction force by the compression fluid continues to act on the gastric tip even after the body needle. The wefts WE thus tensioned and trapped at the end are cut off from the portion within the width region at the time when the weft end reaches the working region of the cutter 20 after the incidence of several picks. The cut sand portion is discharged through the capturing pipe 56 by the pressurized fluid.

The weft end treatment apparatus 10 has a structure in which the weft end portion is transported to the fluid action region of the main body by a conveying member 14 which swings together with the body 30, and at the same time, the fluid flow path 44 of the main body 12 is Since the structure extends in the direction intersecting with the swinging direction of the body 30, a sufficient tension is applied to the weft yarn WE, even though the running cost is reduced by a simple configuration without requiring a fluid flow path for operating the fluid extensively. Is given to.

As with the weft-side treatment apparatus 10, if the downstream region 48 of the fluid flow path 44 has a larger diameter than the upstream region 46, the flow from the upstream region 46 to the downstream region 48 is increased. The flow of the fluid is smoothed, and as a result, the upper fore end portion smoothly enters the downstream region 48 as compared with the case where both regions 46 and 48 have the same diameter. However, the diameters of the two regions 46 and 48 may be the same, and in this case, it is preferable to devise properly so that the fluid does not flow out of the slit 40 toward the opening.

In addition, when the downstream region 48 of the fluid flow path 44 has an obtuse angle with respect to the slit 40, the angle of the downstream fluid flow with respect to the entry direction of the weft thread WE into the slit 40 becomes large, As a result, the wefts WE are smoothly introduced into the fluid flow path 44, in particular the downstream region 48. However, the downstream region 48 may be extended in the direction that goes straight with the slit 40.

In addition, when the inner end of the slit 40 is located near the center of the fluid flow path 44, the fluid acts on the weft yarn at the position where the flow is strong, so that the introduction and capture of the weft WE into the fluid passage is more effective. To be sure. However, the slit 40 may be formed so that the inner end of the slit 40 is forward (upstream of the tilting direction) or rearward (downstream of the tilting direction) from the center of the fluid flow path 44.

Although the slit 40 and the fluid flow path 44 are formed in the block-shaped main body 12 in the above embodiment, the pipe-like member 72 is used as in the main body 70 shown in FIG. The slit 74 may be formed in the upper member 72, and the inside of the pipe-shaped member 72 may be the fluid flow path 76. In this case, it is preferable to provide at least one guide plate 78 having the arc-shaped guide surface 50 for guiding the weft yarn to the slit 74 in the pipe-like member 70.

Instead of positioning the main body so that the inner end of the slit is located on the inclined discharging side rather than immediately before CF, as shown in Fig. 9, the inner end of the slit 40 is located on the woven fabric side immediately after CF, and the slit 40 The main body 12 may be positioned so that the opening side end of the s) is positioned on the inclined discharging side than the previous CF.

In addition, instead of positioning the main body so that the opening side end of the slit is located on the inclined discharging side rather than immediately preceding CF, the main body may be positioned so that the opening side end of the slit is located on the woven fabric side immediately after CF. In this case, instead of oscillating the transfer member at the same position as the body so that the weft end portion is introduced into the slit prior to the body needle of the weft yarn in the straight width region, as shown in FIG. It is preferable to move to the immediately preceding CF side earlier, and to move to the woven fabric side than immediately before CF.

In the embodiment shown in Fig. 10, the conveying member 80 is attached to a rocking arm 82 which is rocked by a driving means such as a cam mechanism. The conveying member 80 is retracted in the same position as the body 30 until the end of the inlet so as not to disturb the upper mouth, and is driven to oscillate ahead of the body 30 after the end of the inlet.

Instead of injecting the compressed fluid from the compressed fluid supply device from the upstream side to the downstream side of the fluid flow path, a suction device may be connected to the downstream flow path to suck the fluid flow path from the downstream, and both the compressed fluid supply device and the suction device You can also use

The present invention has the effect of providing the weft-stage treatment apparatus that combines the weft threading function and the step-processing function of the weft yarn which is securely captured by the simple configuration, and the tensioning and the cutting process is performed stably and surely.

Simple modifications or changes of the present invention can be easily carried out by those skilled in the art, and all such modifications or changes can be seen to be included in the scope of the present invention.

Claims (6)

The main body 12, 70 supported in the frame 28 of the loom and the ends of the enclosed weft yarn WE are disposed in a direction opposite to the direct end side of the semi-finished side with respect to the weft cutting cutter 16. While in contact with both sides of the weft of the, and includes a conveying member (14, 80) for conveying toward the immediately preceding (CF) side in accordance with the movement of the body 30, The main body 12, 70 has fluid flow paths 44, 76 extending in a direction orthogonal to the swinging direction of the body 30, and opens in the extending direction of the weft end portion on the movement path of the weft end portion. Furthermore, it has slits 40 and 74 leading to the fluid flow path, The main body 12 and 70 and the conveying members 14 and 80 maintain a positional relationship in which the weft end portion is introduced into the slits 40 and 74 prior to the body needle of the weft yarn WE in a straight width region. Weft division processing apparatus for a drum-free loom, characterized in that. 2. The conveying member (14) according to claim 1, wherein the conveying member (14) is a member that swings at the same position as the body in the swinging direction of the body (30), and the weft inlet side ends of the slits (40, 74) are immediately preceding (CF). It is located on the inclined discharging side more than the upper end treatment apparatus characterized in that. The weft end processing apparatus according to claim 1 or 2, wherein an inner end of the slit (40, 74) is located on the inclined discharging side rather than immediately before (CF). The gastric treatment apparatus according to any one of claims 1 to 3, wherein an inner end of the slit (40, 74) is located near the center of the fluid flow path (44, 76). 5. The fluid flow path (44, 76) according to any one of the preceding claims, wherein the fluid passages (44, 76) are obtuse with respect to the slits (40, 74) in an area (48) downstream of the slits (40, 74). Weft end treatment device, characterized in that it comprises a region 48. 5. The fluid passage 44, 76 has an upstream region 46 than the slits 40, 74, and the downstream region 48. 6. Has a diameter larger than the upstream region (46).