KR102243145B1 - Weft guide unit for rapier looms - Google Patents

Abstract

The present invention relates to a weft guide unit (200) for rapier looms, which transfers a flat weft yarn (F) to a conveying unit (100) sequentially entering and exiting from side to side to cross and reciprocate left and right between warps vertically performing an opening/closing movement. According to the present invention, the weft guide unit (200) comprises: a guide block (210) fixedly disposed on the left side facing the conveying unit (100) and allowing the weft yarn (F) to be flatly mounted thereon; a guide pin (220) mounted on the upper end of the guide block (210) to move from side to side and entering and exiting the conveying unit (100) to perform an opening/closing movement to grip the weft yarn (F); a guide plate (230) intermittently moving left and right along the guide pin (220) at the upper end of the guide block (210) and pulling the weft yarn (F) to the right side to introduce the same into the conveying unit (100); and a driving unit (240) fixedly disposed on the left side of the guide block (210) and connected to the guide pin (220) to apply a left and right movement force. Accordingly, as the weft guide unit transfers weft to a correct position by linking with the conveying unit and automatically opens and closes the conveying unit so that the weft is gripped during a transfer process, an existing separate opener to open and close the conveying unit can be omitted, thereby increasing weaving speed and reducing costs required for manufacturing and maintenance.

Description

Weft guide unit for rapier looms

The present invention relates to a weft guiding unit for a rapier loom, and more particularly, by interlocking with the conveying unit to deliver the weft to an accurate position, while automatically opening and closing the conveying unit so that the weft is gripped in the conveying process, the existing conveying unit is It relates to a weft guide unit for a rapier loom capable of reducing the cost required for manufacturing and maintenance as well as improving the weaving speed by omitting a separate opener to open and close.

In general, in the case of fabrics (fibers) that have a predetermined width and are used as weft yarns (weft yarns) with thin flat yarns or film yarns, the weft yarns must be transferred with strong force. Weaving with a peer loom.

The rapier loom for flattening can be divided into a body part for opening and moving the warps continuously arranged back and forth in a predetermined pattern, and a weft part for conveying the weft between the warps.

Here, the weft section includes a conveying unit (carrier) that directly grips the weft and moves reciprocating between the warps, and a guide unit that transmits the supplied weft to the conveying unit.

The existing guiding unit only performs a role of wrapping the supplied weft and transferring it to a conveying unit or a tong unit (gripper) in a straight state without being disturbed.

However, it is difficult to correctly transfer the weft to the carrying unit that moves left and right simply by transferring the weft in alignment.

That is, since only the weft yarn enters the conveying unit while the guiding unit is fixed, the weft entering the conveying unit moves away from the guiding unit and is not maintained in a straight state in parallel but is struck downward.

Therefore, there is a problem that the weft is not correctly inserted into the conveying unit or even deviated from the retracted position.

On the other hand, the conveying unit grips the transmitted weft from one side, and in order to return the weft to the other side after passing between the warps, a pair of pressing units (openers) for opening and closing the conveying unit from the left and right sides of the loom are essentially required.

The pressing unit is located a predetermined distance from the conveying unit, and there is a condition that the pressing operation must be performed in a state in which the conveying unit is completely stopped, so that the overall speed of the loom is reduced and it is difficult to control.

Therefore, there is an urgent need to develop a guide unit capable of replacing one pressing unit while catching the weft in a straight state and delivering it directly to the conveying unit.

Republic of Korea Patent Publication No. 10-0435507 (Name of invention: gripper tape guide for rapier loom)

The present invention has been proposed to solve the above problems, while interlocking with the conveying unit to deliver the weft to the correct position, while automatically opening and closing the conveying unit so that the weft is gripped in the conveying process, a separate opening and closing of the existing conveying unit It is an object to provide a weft guide unit for a rapier loom capable of reducing the cost required for manufacturing and maintenance as well as improving the weaving speed since the opener can be omitted.

In addition, the present invention realizes that the guide pin for opening and closing the transport unit and the guide plate for holding and transmitting the weft are moved together, so that moving force can be simultaneously added with only a single driving unit, so that easy and simple operation control and power loss can be prevented. It is an object to provide a weft guide unit for a rapier loom.

In addition, the present invention is implemented so that even if a single driving unit moves the guide pin and the guide plate together, the guide pin and the guide plate are delayed with a predetermined time difference, so that the guide pin and the guide plate sequentially enter and exit the transport unit. It is an object of the present invention to provide a weft guide unit for a rapier loom capable of preventing the weft from shifting or disengaging from the unit.

The present invention relates to a weft guide unit for a rapier loom that passes a flat weft to a conveying unit that moves horizontally and reciprocates across the inclinations of the vertical opening movement, and is fixedly disposed on the left side facing each other with the conveying unit. , A guide block for flatly seating the weft; A guide pin mounted to be movable left and right on an upper end of the guide block, and for opening/closing movement so that the weft is grasped by entering the conveying unit; A guide plate intermittently moving left and right along a guide pin at an upper end of the guide block, and pulling the weft to the right to lead it into the transport unit; And a driving unit fixedly disposed on the left side of the guide block and connected to the guide pin to add a left and right movement force.

At this time, the guide pin according to the present invention, a body portion having a circular or angular cross-sectional shape that is movable left and right to the upper end of the guide block; An awl protruding extending to the right side of the body and inclined upward/downward so that the conveying unit is opened and closed; A U-shaped cross-sectional connection portion extending to the left side of the body portion and being hinge-connected to the driving portion to receive a left-right movement force; It characterized in that a rectangular delay slot for receiving the guide plate so as to flow to the left and right at the middle of the guide body and intermittently transmitting the left and right movement forces of the driving unit differently from each other; is formed.

In addition, the guide plate according to the present invention may include a rail portion inserted into the delay slot so as to be movable left and right; It is characterized in that formed as a; extending from the rail portion in a b-shaped contour shape, and embracing the weft thread seated on the guide block.

In addition, the guide plate according to the present invention is fixedly mounted on the bottom surface of the hand part, and a finger member that wraps or presses the weft with a predetermined friction.

In addition, in the delay slot according to the present invention, in a state in which the rail part is finally positioned to the left, the hand part is located to be avoided from the awl part to the left, and when the rail part is finally positioned to the right, the hand part and the awl part It characterized in that it is positioned to extend to the right from the same position or awl.

In addition, the driving unit according to the present invention, a driving cam that is rotatably disposed at the left rear of the guide block and rotates eccentrically by receiving a rotational force from the outside; A cam link having an a-shaped contour shape that is rotatably disposed at the left rear of the guide block and swings back and forth in engagement with the driving cam; A conversion link of an a-shaped contour shape that is rotatably disposed on the upper left of the guide block and is hingedly connected to the cam link to swing from side to side; And a connecting rod hingedly connected to the guide pin and the conversion link, and moving in an elliptical manner by the conversion link to move the guide pin left and right.

In addition, the driving unit according to the present invention is hinge-connected between the cam link and the switching link to transmit the kinetic force, and an adjustment rod for varying the operating position of the guide pin; characterized in that it is further configured.

In addition, the guide unit according to the present invention, the guide pin, the guide plate, and the weft yarn enter the right side by the driving unit to bring the weft yarn into the transfer unit, but the guide pin enters the line to open the transfer unit, and the guide plate After that, it is characterized in that the weft is introduced into the opened conveying unit.

In addition, the guide unit according to the present invention, a guide pin and a guide plate by the driving unit, advance to the left with the weft thread inserted into the transport unit, but the guide pin advances to the left to close the transport unit, and the The guide plate is characterized in that it advances after stopping at the delay slot until the conveying unit grips the weft.

First, the present invention improves weaving speed by automatically opening and closing the conveying unit so that the weft is gripped in the delivery process while interlocking with the conveying unit to deliver the weft to the correct position. As a result, a separate opener for opening and closing the existing conveying unit can be omitted. In addition, there is an effect that can reduce the cost required for production and maintenance.

Second, the present invention implements a guide pin for opening and closing the transport unit and a guide plate for holding and transmitting the weft, so that moving force can be simultaneously added with only a single driving unit, so that easy and simple operation control and power loss can be prevented. It works.

Third, the present invention is implemented so that even if a single driving unit moves the guide pin and the guide plate together, the guide pin and the guide plate are delayed with a predetermined time difference, so that the guide pin and the guide plate sequentially enter and exit the transport unit. There is an effect of preventing the weft from shifting or disengaging from the unit.

In addition to the above-described effects, specific effects of the present invention will be described together with explanation of specific matters for carrying out the present invention.

1 is a block diagram showing a main part of a rapier loom in which a conveying unit and a guiding unit are arranged according to the present invention.
2 is a perspective view showing a transport unit and a guide unit according to the present invention.
3 is a perspective view showing the main part of the transport unit according to the present invention.
Figure 4 is an exploded view showing a separate guide unit according to the present invention.
5 and 6 are perspective views showing an enlarged main part of the guide unit according to the present invention.
7 to 10 are operational state diagrams showing a process in which the guiding unit according to the present invention transfers weft to the conveying unit.

Hereinafter, various embodiments of the present document will be described with reference to the accompanying drawings. However, this is not intended to limit the techniques described in this document to specific embodiments, and it should be understood that various modifications, equivalents, and/or alternatives of the embodiments of this document are included. In connection with the description of the drawings, similar reference numerals may be used for similar elements.

In addition, expressions such as "first," "second," etc. used in this document can modify various elements regardless of their order and/or importance, and to distinguish one element from other elements. It is used only and does not limit the corresponding components. For example, the'first part' and the'second part' may represent different parts regardless of order or importance. For example, without departing from the scope of rights described in this document, a first component may be referred to as a second component, and similarly, a second component may be renamed to a first component.

In addition, terms used in this document are only used to describe a specific embodiment, and may not be intended to limit the scope of other embodiments. Singular expressions may include plural expressions unless the context clearly indicates otherwise. Terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by one of ordinary skill in the technical field described in this document. Among terms used in this document, terms defined in a general dictionary may be interpreted as having the same or similar meanings as those in the context of the related technology, and unless explicitly defined in this document, they have ideal or excessively formal meanings. Is not interpreted as. In some cases, even terms defined in this document cannot be interpreted to exclude embodiments of this document.

The present invention relates to a weft guide unit 200 for a rapier loom that transfers a flat weft (F) to a transport unit 100 that moves left and right, and a guide block 210 and a guide pin as shown in FIGS. 1 and 2 It is a weft guide unit for a rapier loom having 220 and a guide plate 230 and a driving unit 240 as main components.

For reference, the transport unit 100 according to the present invention receives the flat weft yarn F from the guide unit 200 sequentially entering and leaving the left and right, and reciprocates to the left and right while crossing the slopes that open up and down vertically.

The transport unit 100 is composed of a body 110, a hook 120, a pressure plate 130, a coil spring 140, a plate spring 145, and a cover 150, as shown in FIG. 3.

The body 110 is disposed on the right side facing each other with the guide unit 200, and receives a moving force from the outside to reciprocate left and right.

The hook 120 is inserted and mounted at the rear of the body 110 and swings left and right in connection with the guide unit 200.

The pressure plate 130 protrudes on the left front side of the hook 120 and grips the weft thread F drawn in from the guide unit 100.

The coil spring 140 is inserted and mounted on the rear right side of the body 110, and adds an ascending elastic force to the right bottom portion of the hook 120.

The plate spring 145 is fixedly mounted in front of the body 110, and is always engaged with the upper surface of the pressure plate 130, and directly adds a descending elastic force.

The cover 150 is fixedly mounted on the upper end of the body 120, and covers and protects the recesses of the hook 120 to the coil spring 140.

That is, when the guide unit 200 enters the body 110, the hook 120 swings to the right due to interference with the guide unit 200, and the upper surface of the body 110 together with the hook 120 The closed pressing plate 130 is opened and at the same time the weft thread F is drawn under the opened pressing plate 130.

Conversely, when the guide unit 200 advances from the body 110, the interference with the guide unit 200 is released, so that the hook 120 and the pressure plate 130 are elastic of the coil spring 140 and the plate spring 145. It is returned to the left by the, and thereby the weft (F) drawn in is pressed and gripped by the pressure plate 130.

With respect to the operation of the transport unit 100 will be described again together with the guide unit 200 to be described later.

First, the guide block 210 according to the present invention is fixedly disposed on the left side facing each other with the conveying unit 100 as shown in FIGS. 1 and 2, and serves to flatly seat the weft yarn (F).

As shown in FIG. 4, the guide block 210 has a rail groove 211 that accommodates the guide pin 220 so as to be slidable left and right.

And a guide surface 212 is formed on the right side of the rail groove 211 to guide the weft yarn F to slide in a flat state.

Here, the rail groove 211 and the guide surface 212 are only illustrated as an example and need not be limited to the illustrated shape or structure.

And the guide pin 220 according to the present invention is mounted to be movable left and right on the upper end of the guide block 210 as shown in FIGS. 2 and 4.

The guide pin 220 serves to open and close (swing) the hook 120 so that the pressure plate 130 can grasp the weft yarn F by entering and exiting the transport unit 100 by the driving unit 240. do.

The guide pin 220 is composed of a body portion 221, an awl portion 222, a connection portion 223, a delay slot 224, as shown in FIG.

The body portion 221 is formed in a circular or rectangular cross-sectional shape, and is mounted in engagement with each other so as to be movable left and right on the upper end of the guide block 210.

The awl portion 222 protrudes to the right side of the body portion 221 and is formed to be inclined upward/downward so as to be forcibly inserted between the body 110 and the hook 120.

The connecting portion 223 extends and protrudes in a C-shaped cross-sectional shape to the left of the body portion 221, and the connecting rod 244 of the driving portion 240 is hinge-connected to receive a left-right movement force.

The delay slot 224 is formed in a longitudinal direction, that is, a rectangle at the middle of the guide body 221, and accommodates the guide plate 230 to be able to flow left and right.

The delay slot 224 serves to intermittently transmit the left and right movement force of the driving unit 240 to the guide plate 230 differently from each other.

That is, when the guide pin 220 enters the transport unit 100, the guide plate 230 constrained in the delay slot 224 moves with it.

On the other hand, when the guide pin 220 advances, the guide plate 230 slides in the delay slot 224 and has a stopped state at the entered position until interference occurs.

That is, in a state in which the rail part 231 of the guide plate 230 is finally positioned to the left of the delay slot 224, the hand part 232 is positioned so as to be avoided from the awl part 222 to the left.

And in a state in which the rail part 231 is finally positioned to the right of the delay slot 224, the hand part 232 is positioned at the same position as the awl part 222 or extending to the right side from the awl part 222.

Subsequently, the guide plate 230 according to the present invention is inserted into the delay slot 224 as shown in FIGS. 2 and 4 and intermittently moves left and right along the guide pin 220 at the top of the guide block 210.

The guide plate 230 serves to pull the weft yarn F to the right while moving to the right together with the guide pin 220 to be inserted into the transport unit 100.

That is, the guide plate 230 is formed in a b-shaped contour shape, and is formed to be divided into a rail part 231 and a hand part 232 as shown in FIG. 6.

The rail part 231 is inserted to be movable left and right in the delay slot 224, and at one end, a closing member for preventing separation from the delay slot 224 may be mounted.

The hand part 232 extends in a b-shaped contour shape from the rail part 231 and embraces the weft thread F seated on the upper end of the guide surface 212.

Here, the guide plate 230 includes a finger member 233 fixedly mounted on the bottom surface of the hand part 232.

The finger member 233 wraps the outer surface of the weft thread F with a predetermined friction or presses the upper surface.

That is, the finger member 233 grabs the weft thread F with a predetermined friction and pulls it to the conveying unit 100 to be transmitted.

And when the transfer of the weft (F) to the transport unit 100 is completed, the weft (F) along the transport unit 100 allows the slip to pass to the right.

Therefore, it is preferable that the finger member 233 is formed of a composite of Teflon and a rubber material so as to be able to pull with a predetermined friction while preventing damage to the weft (F).

Of course, the finger member 233 may have a structure that automatically grips and releases the weft yarn F by an electrical signal or a mechanical external force of the driving unit 240.

Finally, the driving unit 240 according to the present invention is fixedly disposed on the left side of the guide block 100 as shown in FIGS. 1 and 2, and is connected to the guide pin 220 to add a left and right movement force.

As shown in FIG. 1, the driving unit 240 includes a driving cam 241, a cam link 242, a switching link 243, a connection rod 244, and an adjustment rod.

The driving cam 241 is rotatably disposed at the left rear of the guide block 210 and rotates eccentrically by receiving a rotational force from the main motor of the loom.

The cam link 242 is formed in an a-shaped contour shape, and is rotatably disposed on the left rear side of the guide block 210.

One end of the cam link 242 is in close contact with the outer surface of the driving cam 241, and the other end is hinged to the adjustment rod 245 to swing back and forth.

The conversion link 243 is formed in an a-shaped contour shape, and is rotatably disposed on the upper left of the guide block 210.

One end of the switching link 243 is hingedly connected to the adjustment rod 245, and the other end is hingedly connected to the connecting rod 244 to swing left and right.

The connecting rod 244 is hinged to each of the guide pin 220 and the conversion link 243 to move the guide pin 220 left and right.

The adjustment rod 245 is hingedly connected to the cam link 242 and the switching link 243, respectively, and transmits the motion force.

The adjustment rod 245 is composed of a connection shaft having a predetermined length and a hinge portion that is screwed to both ends of the connection shaft.

That is, the distance between the hinges at both ends of the adjustment rod 245 is varied according to the rotation of the connection shaft.

Therefore, it is possible to change the operating origin of the guide pin 220 by adjusting the length of the adjustment rod 245, so that the degree of entry into the transport unit 100 can be precisely controlled.

Hereinafter, a process in which the guiding unit 200 according to the present invention transfers the weft yarn F to the conveying unit 100 will be described as follows.

First, as shown in FIG. 7, the weft yarn F is seated on the guide block 210, and the guide plate 230 surrounds the weft yarn F and holds it with a predetermined frictional force.

And when the guide pin 220 moves to the right by the driving unit 240, the guide plate 230 and the weft yarn (F) together with the guide pin 220 as shown in FIG. The weft (F) is introduced into (130).

That is, the guide pin 220 is linearly inserted into the bottom of the hook 120, thereby opening the pressure plate 130 together with the hook 120 while swinging to the right.

Thereafter, as the guide plate 230 subsequently approaches the left side of the pressure plate 130, the weft thread F is inserted under the open pressure plate 130 without interference.

Subsequently, when the guide pin 220 returns to the left by the driving unit 240, the guide pin 220 advances to the left with the weft thread F inserted into the conveying unit 100 as shown in FIG. 9.

That is, as the guide pin 220 advances from the hook 120, the hook 120 and the pressure plate 130 are closed by the elasticity of the coil spring 140 and the plate spring 145, and the pressure plate 130 The weft (F) drawn in is pressed and held.

At this time, while the guide pin 220 advances at high speed, the guide plate 230 maintains a stopped state in the delay slot 224 by its own gravity.

Therefore, as the pressure plate 130 presses the weft yarn F and the guide plate 230 holding the weft yarn F remains stationary until the gripping is completed, the weft yarn F is held in a more accurate and stable posture. I can do it.

And when the guide pin 220 is finished advancing from the hook 120, the guide plate 230 interferes with the delay slot 224, so that the weft yarn F gripped by the pressure plate 130 is placed as shown in FIG. It returns with the guide pin 220.

On the other hand, it has been described that the guide pin 220 and the guide plate 230 from the guide block 210 enters and exits the conveying unit 200, but the transfer process of the weft F is the conveying unit 200 reciprocating left and right. Because it is made in the middle of the actual guide pin 220, the guide plate 230, and the transport unit 200 is preferably viewed as moving toward each other and moving away at the same time.

In the above, preferred embodiments of the present invention have been illustrated and described, but the present invention is not limited to the specific embodiments described above, and the present invention is not departing from the gist of the present invention claimed in the claims. Of course, various modifications may be implemented by those skilled in the art, and these modified embodiments should not be individually understood from the technical spirit or prospect of the present invention.

F: weft
100: transport unit
110: body
120: hook
130: pressure plate
140: coil spring
145: leaf spring
150: cover
210: guide block
211: rail groove
212: guide surface
220: guide pin
221: body part
222: awl
223: connection
224: delay slot
230: information board
231: rail part
232: hand part
233: finger member
240: drive unit
241: drive cam
242: cam link
243: conversion link
244: connecting rod
245: adjustable rod

Claims (9)

In the weft guide unit 200 for a rapier loom, which transfers the flat weft (F) to the conveying unit (100) reciprocating horizontally and crossing between the inclined vertically opening motion
A guide block 210 that is fixedly disposed on the left side facing each other with the conveying unit 210, and flatly seats the weft yarn (F);
A guide pin 220 mounted to be movable left and right on the upper end of the guide block 210 and for opening/closing movement so that the weft yarn F is gripped by entering the conveying unit 100;
A guide plate 230 intermittently moving left and right along the guide pin 220 at the upper end of the guide block 210, and pulling the weft thread F to the right and leading into the transport unit 100;
A driving unit 240 fixedly disposed on the left side of the guide block 100 and connected to the guide pin 220 to add a left and right movement force;
Weft guide unit for a rapier loom, characterized in that comprising a.
The method of claim 1,
The guide pin 220,
A body portion 221 having a circular or angular cross-sectional shape that is movably engaged with the upper end of the guide block 210 so as to move left and right;
An awl part 222 protruding extending to the right side of the body part 221 and inclined upward/downward so that the conveying unit 100 is opened and closed;
A U-shaped cross-sectional connecting portion 223 extending to the left side of the body portion 221 and hingedly connected to the driving portion 240 to receive a left and right movement force;
A rectangular delay slot 224 for accommodating the guide plate 230 to be movable left and right at the middle of the guide body 221 and intermittently transmitting the left and right movement forces of the driving unit 240 to be different from each other;
A weft guide unit for a rapier loom, characterized in that it is formed.
The method of claim 2,
The guide plate 230,
A rail part 231 inserted in the delay slot 224 so as to be movable left and right;
A hand part 232 extending from the rail part 231 in a b-shaped contour shape and embracing the weft thread F seated on the guide block 210;
Weft guide unit for a rapier loom, characterized in that formed of.
The method of claim 3,
The guide plate 230 is
A finger member 233 that is fixedly mounted on the bottom of the hand part 232 and wraps or presses the weft thread F with a predetermined friction;
Weft guide unit for a rapier loom, characterized in that configured.
delete The method of claim 1,
The driving unit 240,
A driving cam 241 that is rotatably disposed at the left rear of the guide block 210 and rotates eccentrically by receiving a rotational force from the outside;
A cam link 242 having an a-shaped contour that is rotatably disposed at the left rear of the guide block 210 and meshes with the driving cam 241 and swings back and forth;
A conversion link 243 of an a-shaped contour shape which is rotatably disposed on the upper left of the guide block 210 and is hingedly connected to the cam link 242 to swing left and right;
A connecting rod 244 hingedly connected to the guide pin 220 and the switching link 243, and moving in an elliptical shape by the switching link 243 and moving the guide pin 220 left and right;
Weft guide unit for a rapier loom, characterized in that consisting of.
The method of claim 6,
The driving unit 240,
An adjustment rod 245 that is hingedly connected between the cam link 242 and the switching link 243 to transmit an exercise force, and to change an operating position of the guide pin 220;
A weft guide unit for a rapier loom, characterized in that it is further configured.
The method of claim 2,
The guide unit,
The guide pin 220, the guide plate 230, and the weft yarn (F) enter the right side by the driving unit 240 to bring the weft yarn (F) into the transport unit 100,
Rapier weft, characterized in that the guide pin 220 enters the line to open the conveying unit 100, and the guide plate 230 enters afterward, and the weft (F) is introduced into the opened conveying unit 100. Weft guide unit for the machine.
The method of claim 8,
The guide unit,
The guide pin 220 and the guide plate 230 by the driving unit 240 leave the weft yarn F inserted into the transport unit 100 and advance together to the left,
After the guide pin 220 advances to the left and closes the conveying unit 100, the guide plate 230 stops at the delay slot 224 until the conveying unit 100 grasps the weft (F). Weft guide unit for a rapier loom, characterized in that advanced.

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