JPS5994649A - Backrest apparatus of loom - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to a bankrest device in a loom.

In a loom, warp yarns sent out from a warp line are turned in a substantially horizontal direction by hackrest rollers and supplied to the heald frame side, and the warp line is determined by the hackrest position.

For this reason, as a conventional device, for example, JP-A-55-805
As shown in Publication No. 46, a hackrest holder that holds a hackrest roller is attached to the mounting head on the side of the frame so that it can be moved vertically (up and down) using an elongated hole, and a warp line is installed. By changing the tension up and down, the difference in tension between the upper and lower threads during the shedding movement of the warp threads can be used to create a special texture in textiles made of spun threads. be.

Furthermore, it is not only the warp line that is determined by the hackrest position, but also the quantum (distance between the hackrest and the heald frame) can be changed by adjusting the position in the horizontal direction (back and forth direction). By making the quantum length long, when the vertical momentum of the heald frame (opening M) is constant, the difference in path length between opening and closing, and therefore the difference in tension, can be reduced, especially for filament yarns, etc. This is effective when using On the other hand, if the quantum length is made long, the travel time from the hack rest to the weave becomes longer, which inevitably increases the number of opening and closing operations, which becomes a factor in the generation of fuzz. Therefore, it is desirable to adjust the quantum depending on the type of warp and the type of fabric.

On the other hand, in looms, particularly cotton looms, in order to suppress fluctuations in warp tension caused by opening and closing, a hackless roller is actively swung in synchronization with the opening and closing, a so-called active easing operation.

Therefore, when changing the hackrest position up or down or forward or backward, it is necessary to adjust the relationship between the positive easing mechanism and the drive system. In other words, there is a drive lever that is supported by the frame and is swung by a drive source in synchronization with the opening and closing of the warp threads, and a hackrest roller that is swingably supported by a hackrest holder that is movable and adjustable with respect to the frame. It is necessary to connect the swinging lever to be held by a rotor F having a length adjustment mechanism, and to change the lot length when changing the puncture rest position. This is because after setting the hackrest holder in the specified state, the type of fabric changes,
For example, when the hackrest holder is moved in the vertical direction, if the lot length remains the same, the movement of the hackrest roller relative to the warp opening/closing movement will change even if the amplitude of the hackrest roller is the same. This is because the optimal tension cannot be applied to the warp threads, and therefore readjustment is necessary.

However, in the past, there was no standard for readjustment, so readjustment was not easy.

The present invention was made with the aim of solving such conventional problems, and the hackrest holder and the swinging lever each have a predetermined swinging position of the swinging lever relative to the hackrest holder. For example, readjustment is facilitated by providing insertion holes for temporary fixing pins whose axes coincide with each other at the center of swing.

An embodiment of the present invention will be described below based on the drawings.

FIG. 1 is a side view of the entire loom (view of the right frame viewed from the outside), in which 1 indicates the frame, 2 indicates the warp beam support, and 3 indicates the warp beam. warp beam 3
The warp yarns 4 sent out from the heald frame 5 pass through a guide roller 25, which will be described later, and are turned approximately horizontally while being guided by a cross roller 16, which will be described later. The opening is opened and closed by the vertical movement of the heald frame 5,
When a weft yarn (not shown) is inserted into the warp opening in front of the reed 7, it is driven into the front 6 and a woven fabric 8 is woven, and the woven fabric 8 passes through a pre-stroller 9 and the like to a cross roller (not shown). It is wound up.

Figure 2 is a plan view of the backrest part (view of the left frame viewed from above), Figure 3 is a side view of the same upper part (view of the left frame viewed from inside), Figure 4 is the IV of Figure 3. - It is a TV sectional view. Note that the hackrest portion is symmetrical.

The hackrest portion will be explained with reference to FIGS. 1 to 4. In the figures, 10 is the hackrest mounting base of the frame 1;
Reference numeral 11 denotes a backrest holder that is attached to the inner surface of the attachment heir 10 as described later.

A fixed shaft 12 is provided protruding from the hack rest holder 11.
A mounting arm 13 having a forked tip is fixedly attached to the fixed shaft 12 . The mounting arm 13 has a shaft 14 at its tip, and this shaft 1
4, a U-shaped swinging leno X-15 is swingably supported. A shaft portion 17 of a hackless roller 16 is rotatably held at one end of the swinging leno\-15.

A shaft 18 is supported along the frame 1 and makes reciprocating angular movements in relation to the main shaft of the loom, and a drive lever 19 is fixed to this shaft 18.

A rod 20 is rotatably attached to the tip of the drive lever 19, and a tip rotatably attached to the other end of the U-shaped swinging lever 19 is an eve-shaped lot 20.
1 and adjust the lot length to form the holding tool 22.
Both rods 20, 21 are connected by being clamped and fixed by. 38 is a bolt for fixing the holding tool 22.

In addition, the hackrest holder 11 has another fixing/shaft 23.
is provided in a protruding manner, and a leno\-24 is rotatably supported on this fixed shaft 23. A shaft portion 26 of a guide roller 25 is rotatably supported at the tip of the lever 24. Here, the lever 24 is rotated counterclockwise in FIG. 3 due to its own weight including the guide roller 25 and the tension of the warp threads 4 applied to the guide roller 25, and comes into contact with a stopper (not shown), thereby causing the guide roller 25 to be positioned. is now fixed. Note that the guide roller 25 is moved by lever 24.
The reason why the warp hem 3 is rotated clockwise in FIG. 3 is to avoid getting in the way when replacing the warp hem 3.

To explain the attachment relationship between the mounting heir 10 and the hackrest holder 11, the mounting heir 10 has a horizontal direction (
A long hole 27 is formed which also serves as a guide portion and extends in the front-rear direction. The hackrest holder 11 is formed with a long groove 28 serving as a guide section extending in the vertical direction (vertical direction) and two long holes 29a and 29b extending parallel to the long groove 28.

On the other hand, as shown in FIG. 5, a substantially cross-shaped piece 30 is provided, in which a horizontal part 31 and a vertical part 32, each forming a rectangle, are shifted and joined together. It is fitted into the elongated hole 27 of the heath 10 so as to be slidable in its extending direction (that is, in the horizontal direction). Also, piece 30
The vertical portion 32 of the hackrest holder 11 is fitted into the length a28 of the hackrest holder 11 so as to be slidable in its extending direction (therefore, in the vertical direction).

Then, at the intersection of the elongated hole 27 of the mounting head 10 and the elongated holes 29a, 29b of the hackrest holder 11, the elongated holes 29a, 2! of the hackrest holder 11 are opened. The bolts 33'a and 33b are inserted into the elongated hole 27 of the mounting hese 10 from i and fixed by tightening nuts 34a and 34b.

Further, a screw hole 35 is formed on the top surface of the hex crest holder 11, and the tip of the bolt 36 screwed into the screw hole 35 is inserted into the vertical portion 3 of the piece 30.
2 in contact with the top surface. This bolt 36 is used to adjust the vertical position of the pack rest holder 11.

Here, a reference pin insertion hole 4] is formed in the puncture crest holder 11, and this pin insertion hole 41 is provided at a reference position at which the hackrest roller 16 should pivot.

Further, a pin insertion hole 42 is also formed in the shaft portion 17 of the swinging lever 15, and in this example, the hackrest roller 16 held by the swinging lever 15.

Therefore, when the swing lever 15 comes to the swing center, the 2
The axes of the two pin insertion holes 4] and 42 match, and in this state the temporary fixing pin 43 can be inserted into these pin insertion holes 41 and 42, and the swing lever 15 is at the swing center position in the inserted state. It is designed to be temporarily fixed.

The adjustment work will be explained.

First, stop the loom at the center of swing. In this state, the pin insertion hole 41 of the hackrest holder 11 and the pin insertion hole 42 of the swinging lever 15 match, so insert the temporary fixing pin 43 from the pin insertion hole 4I of the hackrest holder 11 to the pin of the swinging lever 15. Insert into the insertion hole 42. As a result, the swing lever 15 is attached to the hack rest holder 11.
Therefore, the hackrest roller 16 is temporarily fixed at the swing center position.

Next, loosen the bolt 3B of the retainer 22 of the rod 20.21 to make the rod telescopic, and then loosen the bolt 33a.

Adjust the vertical and horizontal positions of the No. 1 crest hole 11 by loosening the nuts 34a and 34b of 33b.

Adjustment in the vertical direction (vertical direction) can be made by rotating the bolt 36 in the screw-in direction to move the hackrest halter 11 upward relative to the piece 30, or by rotating the bolt 36 in the withdrawal direction. By this, the /rest holder 11 is moved downward with respect to the piece 30, that is, the piece 3 is moved downward.
The hackrest holder 11 is moved up and down with respect to the mounting head 10 by sliding between the vertical @ 32 of 0 and the long groove 28.

Adjustment in the horizontal direction (back and forth direction) is performed by moving the crest holder 11 back and forth.

At this time, the piece 30 is horizontally engaged with the long groove 2B of the pack rest holder at its vertical portion 32.
The piece 30 moves in the horizontal direction together with the hackrest holder 11, and the horizontal portion 3N of the piece 30 slides within the elongated hole 27 of the mounting head 10.

During such adjustments in the vertical and horizontal directions, the mounting base 10 and the crest holder 11 are kept at right angles by the substantially cross-shaped piece 30, and are therefore not twisted. Also, adjusting one will not upset the other.

After adjusting the position, tighten the bolts 33a and 33b located at the intersection of the long hole 27 and the long holes 29a and 29b with nano) 34a.
.

It can be fixed by tightening 34b.

In this state, the opening 2o and the opening 21 slide as appropriate, and while the amount of fitting is automatically adjusted, the holding tool 22 and the opening 38 are tightened and fixed. This allows the lot length to be automatically adjusted.

Thereafter, the temporary fixing bolts 43 are removed from the pin insertion holes 4] and 42 to complete all adjustment work.

As a result, the mounting position of the hackrest holder 11 relative to the mounting base 1o on the side of the frame 1, that is, the hackrest position, can be adjusted in both the vertical and horizontal directions, and the warp line and quantum can be optimally set, and the warp and It is possible to adapt the rod 20 to the type of fabric, but the frame 1 is also able to move the rod 20 based on the swinging of the drive lever 19.
．． 21 and the swing lever 15-, the backrest roller 16 can be swung in synchronization with the opening/closing opening of the warp yarns, and an accurate easing effect can be ensured.

Note that the pin insertion hole 41 on the reference side provided in the pack rest holder 11 does not necessarily have to be located at the center of swing, and may be provided at a portion corresponding to the maximum amplitude, for example.

As explained above, according to the present invention, the hackrest roller can be temporarily fixed to the packrest holder at the reference position, so when adjusting the mounting position of the hackrest holder, it is extremely difficult to adjust the relationship with the easing mechanism. The effect is that the easing action can be performed easily and accurately.

[Brief explanation of the drawing]

Fig. 1 is a side view of the entire loom showing an embodiment of the present invention (a view of the right side frame viewed from the outside), and Fig. 2 is a plan view of the main parts of the same loom (a view of the hackrest portion of the left side frame viewed from above). ), Figure 3 is a side view of the main parts of the same as above (a view of the left frame viewed from inside), Figure 4 is a sectional view IV-IV of Figure 3, Figure 5
The figure is a perspective view of the piece. 1...Frame 10...Mounting base 11.
...Tsubatsu Crest Holder 15...Swing Lever 16...Notes Crest Roller 19...Drive Lever 20.21...Rod 22...Holder 25...Guide Roller 27... Long hole that also serves as a horizontal guide 28...Long groove that serves as a vertical guide
29a, 29b...long hole 30...piece 31...
・Horizontal part 32...Vertical part 33a, 33b...
Holt 41.42...Pin insertion hole 43...Temporary pin Patent applicant Nissan Motor Co., Ltd. Agent Patent attorney Fujio Sasashima

Claims (1)

[Claims] Hackrest holder (11) on the loom frame (1)
At the same time, the hackless 1-roller (16) is held by the bankrest holder (a rocking lever (15) that is swingably supported by the river), and the frame (1)
A loom in which a drive lever (19) that is supported by a wall and swings in synchronization with opening and closing of warp threads and the swing lever (15) are connected by a rond (20, 21) having a length adjustment mechanism. In the hackrest holder (11) and the swing lever (I5), the hackrest 1 to
Temporary fixing pins (4) whose axes coincide with each other at a predetermined swing position of the swing lever (15) relative to the holder (11).
3) A hackrest device for a loom, characterized in that the insertion holes (41, 42) are provided.