JPH077345Y2 - Draw foil device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to the use of a foil thread as a weft thread between warp thread groups via a draw foil rod that automatically advances and retracts across a warp thread group when weaving a draw foil fabric. The present invention relates to an improvement of a pulling foil device for automatically inserting (horizontal insertion) into a sheet.

[Conventional technology]

Recently, as a pulling foil device of this kind, a tip portion of a pulling foil rod is provided with a thread grip (thread clamp), and the tip portion of the foil thread is gripped (sandwiched) into the warp thread group and then inserted between the warp groups. There has been proposed a thread gripping method for releasing the grip of the thread.

[Problems to be solved by the invention]

However, in the already proposed thread gripping type pulling foil device, especially for releasing the gripping of the thread by the thread gripping of the tip end portion of the foil thread after inserting the foil thread between the warp thread groups by retreating the pulling foil rod. There is a problem that the structure of the means is complicated, and if the timing of the operation of the means deviates even a little, an error may occur in releasing the grasping of the yarn.

In view of this, the present invention has a compact structure for releasing the grip of the front end of the foil yarn, especially after it is inserted between the warp yarn groups, and can surely release the grip of the front end of the foil yarn. The purpose of the present invention is to provide a pulling foil device of a system.

[Means for solving problems]

According to the present invention, the above object is to provide a rod case having a stopper at a front end portion and a side opening (side opening) extending in a front-back direction between a front end portion and a rear end portion, and the rod case. A rod main body movably supported in the front and rear direction, having a thread hole at the front end portion, and an operation block provided at the rear end portion with a belt connecting portion protruding outside the rod case through a side port of the rod case A thread grip that extends forward and backward between the rod body, the thread hole of the rod body and the operation block in a slightly movable direction, and is urged (forwardly) so as to always take the most forward position via a spring. An operation bar, which has a thread gripping head capable of closing a thread hole at the tip, and an end member provided at the rear end with an operation portion protruding outside the rod case through a side opening of the rod case, The end member is the most advanced part of the rod body Immediately before the state, a pulling foil rod including a thread gripping operation bar capable of contacting a stopper at the front end portion of the rod case, and a side wall adjacent portion of the rod case, which is stretched so as to extend back and forth in parallel with the pulling foil rod. , Connected to the belt connecting part attached to the operation block of the pulling foil rod,
A transmission belt that can be driven via a reversible motor, and a movable base that is installed at the rear end of the rod case so that it can move back and forth and that is urged to always take the most forward position via a spring. In the state where the operation block of the rod main body is in contact with the stopper of the movable table, the movable block has a stopper with which the operation block can directly or indirectly abut, and the thread grip release operation means installed on the movable table. , Push the operation part of the end member of the thread gripping operation bar backward,
This is achieved by a pulling foil device comprising a thread gripping operation bar capable of pushing the thread gripping operation bar rearward against the acting force of the spring.

Here, the thread grasping release operation means is composed of a direct-acting electromagnetic operating device installed in the rear part of the movable table and a swing hook member installed in the front part of the movable table. The operation portion of the end member of the thread gripping operation bar can be made swingable so as to be pushed rearward via the direct-acting electromagnetic operation device.

[Action]

In the trailing foil device of this invention, the trailing foil rod travels forward of the rod case through the forward rotation of the reversible motor to advance the trailing foil rod so that its substantial portion extends across the warp yarn group. The advancing of the pulling foil rod via the power transmission belt finally causes the end member of the thread gripping operation bar to come into contact with the stopper at the front end portion of the rod case to stop the advancing, and then the rod body moves the spring. It advances slightly while being compressed, and ends with the closure of the thread hole that becomes the thread gripping head of the thread gripping operation bar being released.

In such a forward state of the pulling foil rod, after the tip end portion of the foil thread is inserted into the open thread hole of the rod body, the pulling foil rod is moved through the backward movement of the reversible motor to the rear side of the transmission belt. Retract and pull the pull foil rod from between the warp groups. At this time, at the beginning, the rod body retracts when the thread gripping operation bar is stopped, and the thread hole is closed by the thread gripping head, so that the tip end of the foil thread is between the wall surface of the thread hole and the peripheral end surface of the thread gripping head. It is sandwiched between and gripped, and the foil yarn is guided between the warp yarn groups as the pulling foil rod retreats thereafter.

As the pulling foil rod retreats, the operation block of the hexagonal body retracts to the rear end area of the rod case, and the operation block directly or indirectly contacts the stopper attached to the movable table at the most advanced position. , When it is in a state of retracting together with the movable table, when the transmission belt is running or is temporarily stopped,
The yarn gripping release operating means is actuated to push the operating portion of the end member of the yarn gripping operation bar rearward, and retract the yarn gripping operation bar against the action force of the spring. As a result, the grip of the foil thread by the thread gripping head is released. Then, the tip of the foil thread is completely separated from the thread hole of the rod body due to a slight backward movement of the pulling foil rod due to a slight rearward movement of the transmission belt after the gripping of the foil thread is released, whereby the foil thread is completely removed. Horizontal loading is completed.

〔Example〕

The present invention can be implemented, for example, in the form as illustrated.

In the illustrated example, the rod case 10 in which the mounting plates 16 are fixed to the lower sides of the front and rear ends, and the rod body 22 and the thread gripping operation bar 32 slidably accommodated in the rod case 10.
Including the pulling foil rod 20 and the drive pulley 44 and the driven pulley 46 supported by each mounting plate 16, and a case-shaped movable base mounted on the rear end of the rod case 10.
50 and a thread grip releasing operation means 70 installed on the movable table 50.

A stopper 12 is attached to the front end portion of the rod case 10, and a side port 14 is formed on the side portion so as to extend substantially the entire length.

The rod main body 22 constituting the pulling foil rod 20 is an operation block provided with a thread hole 24 formed at the front end portion and a belt connecting portion 28 attached to the rear end portion and protruding outward through the side port 14 of the rod case 10. 26, and an axial groove 30 formed between the thread hole 24 and the operation block 26 formed in the upper layer portion.

Further, the thread gripping operation bar 32 is mounted in the shaft groove 30 of the rod body 22 so as to be slightly movable back and forth, and has a thread gripping head 34 of a size substantially corresponding to the thread hole 24 of the rod body 22 at the tip portion.
On the other hand, at the rear end, the side opening 14 of the rod case 10 is provided.
It has an end member 36 provided with an operating portion 38 that extends upward adjacent to the side opening forming side portion of the rod case 10 until it exceeds the upper surface of the rod case 10 via a side protrusion extending therethrough. The end member 36 is adapted to come into contact with the stopper 12 at the front end portion of the rod case 10 prior to the operation block 26. The end member 36 of the thread gripping operation bar 32
A spring 40 is mounted between the rear end surface of the rod body 22 and the front end surface of the lower portion of the operation block 26 of the rod body 22 so that the thread gripping operation bar 32 is always held by the thread gripping head 34 and the thread hole 24 is closed. It is biased forward.

The transmission belt 42 is connected to the operation block 26 via a belt joint 48 that engages with the belt connection portion 28 of the operation block 26 of the rod body 22 in a state of being adjacent to the side opening forming side portion of the rod case 10. There is.

The movable table 50 has a front wall and a rear wall at the top of the rod case 10.
A guide bar 54 extending along the rod case 10 is slidably engaged in the front and rear direction between support pins 52 that are provided upright on the upper surface of the rear end portion with a space in the front and rear. A pin stopper 56 extending through a guide hole 58 formed along the guide bar 54 on the side of the movable table 50 is fixed to an intermediate portion of the guide bar 54, and the pin stopper 56 and the front of the movable table 50 are fixed. A spring 60 extending between the wall portion and the wall portion is mounted so that the movable table 50 is always in the most advanced position in which the rear end of the guide hole 58 contacts the pin stopper 56. In addition, the movable table,
A stopper 62 with which the rear end of the belt joint 48 can abut is attached to the side portion of the rear portion on the side where the transmission belt is stretched.

The thread grasping release operation means 70 is attached to the lower part of the movable base 50, and is a direct-acting electromagnetic (solenoid) operation device (actuator) 72 having an operation shaft 74 installed in the rear part and extending forward and backward along the rod case 10. And, while the rear end portion installed in the front portion is pivotally attached to the tip end portion of the operation shaft 74, the tip end portion extends backward from the side mouth formation side of the rod case 10 toward the side mouth formation side while inclining rearward. In addition, it has a guide hole 78 with which a guide pin 66 attached to the side of the movable base 50 on which the transmission belt is stretched fits, and always takes the most advanced position with the operation axis 74 of the electromagnetic actuator 72 via the spring 80. On the rod case 10 which is urged, the swing hook member 76 is swingable through the side window 64 so as to come into contact with the operation portion 38 attached to the end member 36 of the thread gripping operation bar 32. Where the hook member
When the hook portion 76a of 76 and the belt joint 48 are in the retracted state of the pulling foil rod 20 in contact with the stopper 62 of the movable base 50, from the position occupied by the operation portion 38 of the end member 36 of the yarn gripping operation bar 32 in the most advanced state. It is also installed so that it is located slightly forward.

In this illustrated example, first, by the forward rotation drive of a reversible motor (not shown), the transmission belt 42 travels to the front side of the rod case 10 via the drive pulley 44, whereby the pull foil rod 20 advances, Its tip projects across the warp group from the opposite side. Immediately before the advancing of the pulling foil rod 20 is completed, the end member at the rear end of the thread gripping operation bar 32 is
36 abuts on the stopper 12 at the front end of the rod case 10, and the forward movement of the thread gripping operation bar 32, and thus the forward movement of the thread gripping head 34, is stopped. As a result, the rod body after this
A slight advance of 22 causes the thread hole 24 of the rod body 22 to separate from the thread gripping head 34, and the thread hole 24 opens.

When the tip end of the foil thread is inserted into the thread hole 24 thus opened, the reversible drive of the reversible motor causes the transmission belt 42 to travel to the rear side of the rod case 10, thereby retracting the pulling foil rod 20. And separate from the warp group. At this time, at the beginning of the reversing drive of the reversible motor, the rod body 22 is retracted while the thread gripping operation bar 32 is stopped, and the thread hole 24 is moved to the thread gripping head 34.
The leading end of the foil yarn is gripped by this, so that the foil yarn is inserted between the leading end portion and the warp group by the retracting of the pulling foil rod 20 thereafter.

The reversing drive of the reversible motor is the operation block of the pulling foil rod 10.
26 retracts in the rear end region of the rod case 10, stops immediately before the belt joint 48 contacts the stopper 62 of the movable base 50, and continues after avoiding the collision of the belt joint 48 with the stopper 62, This causes the movable base 50 to retract integrally with the pull foil rod 20. At this time, the end member of the thread gripping operation bar 32
The operating portion 38 of 36 is positioned slightly behind the hook portion 76a of the swing hook member 76.

Immediately after the movable base 50 begins to retract, the thread grip release operation means
The coil of the electromagnetic actuator 72 of 70 is excited and the operation shaft 74 is attracted backward. As a result, the swing hook member 76 is pulled rearward against the acting force of the spring 80, and the hook portion 76a of the swing hook member 76 projects through the window 64 toward the tensioning side of the power transmission belt and the thread gripping operation bar 32 While swinging backward while contacting the front end of the operating portion 38 of the end member 36, the thread gripping operation bar 32 is slightly retracted, and the thread hole 24 is closed by the thread gripping head 34,
That is, the grip of the tip of the foil thread is released. In this state, the pulling foil rod 20 continues to retract due to the reverse rotation of the reversible motor, whereby the tip end portion of the foil yarn is completely separated from the yarn hole 24.

At the final stage of the reversing drive of the reversible motor, the coil of the electromagnetic actuator 72 is de-energized, so that the operation shaft 74 and the swing hook member are released.
76 returns to its original most advanced position by the acting force of the spring 80, and along with this, the thread gripping operation bar 32 advances while keeping the acting force of the spring, and the thread gripping head 34 moves the rod through the thread gripping head 34. Body
The thread hole 24 of 22 is closed, and in this state, the next horizontal insertion of the foil thread is waited.

In addition to this, the present invention uses a hydraulic cylinder such as a pneumatic cylinder in place of the direct-acting electromagnetic actuator in the bar retracting operation means, uses a swing lever or a swing cam in place of the swing hook member, or The bar retreating means can be embodied in various forms, such as in a form in which the cam is rotationally driven via an electric motor or hydraulic motors.

[Effect of device]

According to the pulling foil device of the present invention, the means for releasing the grip of the tip portion of the foil thread at the tip portion of the pulling foil rod is substantially a thread grip releasing operation means installed at the rear end portion of the rod case. Since the structure is simple and the positional relationship between the operation portion attached to the end member of the thread gripping operation bar and the thread gripping release operation means is unchanged, especially when the thread gripping release operation means is activated, the thread gripping release operation is performed. It is possible to surely retract the yarn gripping operation bar by the means, that is, release the grip of the tip end portion of the foil yarn.

If the thread grip releasing operation means is composed of the direct-acting electromagnetic operating device and the swing hook member as shown in the drawing, the structure becomes more compact.

[Brief description of drawings]

The drawing shows a state in which the pulling foil rod of one embodiment of the pulling foil device according to the present invention is most retracted. FIG. 1 is a side view of the whole, and FIG. 2 is an enlarged sectional view of a part of FIG. 3 is an overall plan view, FIG. 4 is an enlarged sectional view of a part of FIG. 3, and FIG.
The drawing is a side view of the foil foil rod, FIG. 6 is a partially enlarged sectional view of FIG. 5, and FIG. 7 is a plan view of the foil foil rod. 10 …… Rod case, 12 …… Stopper, 14 …… Side port, 20
…… Pull foil rod, 22 …… Rod body, 24 …… Thread hole, 26…
… Operation block, 28 …… Belt connection part, 32 …… Yarn gripping operation bar, 34 …… Yarn gripping head, 36 …… End member, 38…
… Operation part, 40 …… Spring, 42 …… Transmission belt, 48 …… Belt joint, 50 …… Movable base, 60 …… Spring, 62 …… Stopper, 70 …… Thread grip release operation means, 72 …… Direct Dynamic electromagnetic actuator, 76 ... Swing hook member.

Claims (2)

[Scope of utility model registration request] 1. A rod case having a stopper at a front end thereof and a side port having a side opening extending forward and backward between a front end portion and a rear end portion, and a rod main body movably supported forward and backward by the rod case. And a rod body having an operation block with a threaded hole at the front end and a belt connecting portion protruding to the outside of the rod case through the side opening of the rod case at the rear end. A thread gripping operation bar that extends forward and backward slightly movable between blocks and is biased via a spring so as to always take the most advanced position. A thread hole can be closed at the tip. It has a thread gripping head,
At the rear end, there is an end member provided with an operating portion that protrudes out of the rod case through the side opening of the rod case.The end member contacts the stopper at the front end of the rod case immediately before the most advanced state of the rod body. A pulling foil rod including a thread gripping operation bar that can be contacted, and a belt connecting portion attached to a side adjoining portion of the rod case so as to extend back and forth in parallel with the pulling foil rod and attached to an operation block of the pulling foil rod. It is a transmission belt that is driven by a reversible motor, and a movable base that is installed at the rear end of the rod case so that it can move back and forth and that is biased through a spring so as to always take the most forward position. A movable base having a stopper with which the operation block of the rod body can directly or indirectly abut,
The thread gripping release operation means installed on the movable table, and in a state where the operation block of the rod body is in contact with the stopper of the movable table, the operation section of the end member of the thread clamping operation bar is pushed rearward to grasp the thread. A pulling foil device comprising a thread gripping releasing operation means capable of pushing the operation bar backward against the action force of a spring. 2. The thread grip releasing operation means comprises a direct-acting electromagnetic operating device installed in the rear part of the movable table and a swing hook member installed in the front part of the movable table, the swing hook member comprising: The pulling foil device according to claim 1, wherein the pulling foil device is swingable so as to push the operation portion of the end member of the thread gripping operation bar rearward via the direct acting electromagnetic operation device.