JPH02264040A - Cradle for preparing machine throughput in weaving machine - Google Patents

Abstract

PURPOSE:To smoothly carry out threading of warp through heald frames by equipping an opening and closing mechanism to relatively displace part of plural sheets of heald frames mutually vertically from the rest of the plural sheets of heald frames directly under the plural sheets of heald frames held on a main body of supporting member constituting a cradle. CONSTITUTION:Shafts 38 and 39 are laid between left and right bearing bars 35 and 37 and an operation lever 40 is fixed to a projecting end of one shaft. An eccentric cam group 44A on the shaft 38 is raised by rotation of the operation lever 40, an eccentric cam group 44B is dropped, a heald frame 49B is dropped from a closing position, a heald frame 49A is raised from the closing position, a line of warps T1 is opened, adjoining warps are mutually vertically separated and threading resistance during threading of warp through the heald frames is reduced.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention supports a warp beam and a member through which warp threads have been inserted, and a machine preparation mechanism that enables threading of the warp, which is one of the steps of preparation. This relates to a cradle for use.

[Prior art] The process of installing a warp beam on a loom and passing the warp threads to the weaving device is a work process.A new warp beam was developed in consideration of shortening the time required for this work, which would lead to improved operating efficiency of the loom. A common procedure is to insert the warp threads into the dropper, heddle frame, and reed of the warp cut detection device before installation. As a means for that purpose, the applicant has
Japanese Patent No. 243352 discloses a cradle for preparing a mechanism. This receiver has a positional relationship that allows it to support the warp threads of the warp beam in approximately the same shape as the warp delivery shape of the loom. It is composed of a support body that removably supports the threading member, and a warp pulling-out mechanism that pulls out the warp threads of the warp beam all at once via the warp threading member on the support body.

The empty warp beam that has been removed from the loom and the warp threading member through which the warp threads have been passed are supported by the support body, and the leading ends of the warp threads that have been threaded through the reed are collectively connected to a warp pull-out mechanism. In this state, the warp threads are cut between the empty warp beam and the warp threading member, and the warp threads of the full warp beam are connected to the old warp threads on the warp threading member side. Then, by operating the warp pull-out mechanism, the warp threads are pulled out all at once from the full warp beam until the warp knots pass through the reed.This completes the warp thread threading, which is one of the preparation steps, and with this completion. The full warp beam and the warp passing member through which the warp threads are passed are stored in a state where the warp threads are supported in a warp delivery shape on the loom. Therefore, the connection between the warp thread threading work, which is one of the preparation steps, and storage are extremely smooth. In addition, the support shape of the warp in this storage configuration is different from the warp delivery shape on the loom where warp threads do not become entangled with each other.
Therefore, there is no friction between the warp passing member and the warp threads, which may cause damage to the warp threads. Further, since the warp threading member supporting the warp threads in substantially the same shape as the warp delivery shape is similar to the state in which it is mounted on a loom, there are various advantages such as easy automation of mounting and removal by mechanical means.

[Problems to be Solved by the Invention] However, when the warp threads are intertwined with each other when the warp threads are drawn through the healds of a plurality of heald frames, this entanglement causes a large insertion resistance. will lead to thread breakage. In particular, since the knots of the old and new warp threads are aligned substantially in a straight line in the width direction of the warp series, they tend to become entangled with each other, making it even more difficult to insert the knots.

The object of the present invention is to provide a loom preparation holder with the function of smoothly threading the warp threads into the heald frame on the loom preparation holder, which has the various advantages described above.

[Means for Solving the Problems] For this purpose, in the present invention, the receiver connects a portion of a plurality of heald frames and the remainder thereof to each other directly below the plurality of heald frames supported on a support body constituting a stand. An opening/closing mechanism was installed to allow relative vertical displacement.

[Operation] The plurality of heald frames are divided into two groups that are vertically and relatively displaced by the opening/closing opening mechanism, and the longitudinal line passing through the plurality of heald frames forms an opening. After this open state, if the warp threads are drawn through the warp threading member by the warp drawing mechanism, the warp series will be divided into upper and lower sections in front of the heald frame. Therefore, even if the warp threads are entangled with each other, this entanglement is gradually resolved and the insertion resistance is reduced. In addition, in the closed state, the knots that are aligned substantially straight in the warp row direction are divided into upper and lower parts, and the density of the knot portion where the warp thread density is highest is reduced, making it easier to pass through the healds.

[Example] Hereinafter, an example embodying the present invention will be described based on FIGS. 1 to 4.

Connection bar 10-. A guide plate 15 is fixed to the upper surface of the pedestal 14a at the front of the support body 14, which consists of a pair of symmetrical side frames connected by 11.12.13.
A guide groove 15a is recessed in the upper surface of the guide plate 15, and mounting recesses 15b are provided at both front and rear ends of the guide groove 15a.
15c is formed. A hook 33 is rotatably attached near the rear end of the guide Fi 15, and is restricted by a pin 34 between the solid line position in FIG. 1 and the 'wA line position.

A support bracket 16 is fixed to the upper end surface of the pedestal 14a, and a mounting recess 16a is provided on the upper surface of the support bracket 16.
is formed.

A support platen) 17 is fixed to the rear surface of the upper end of both left and right branches 14b at the rear of the support body 14, and both brackets 1
A shaft 18 is rotatably supported between the shafts 7 and 7. A ratchet 23 is rotatably supported by one of the support brackets 17, and is urged to rotate clockwise by a torsion spring (not shown). A winding roller 1 is mounted on the shaft 18.
A number of needles 20 are fixedly attached to the roller 19, and a large number of needles 20 are implanted in a row in the axial direction on the circumferential surface of the roller 19. A ratchet wheel 21 is fixed to one end of the shaft 18 so as to be able to engage with a ratchet 23, and a handle 22 is attached to the outside of the ratchet wheel 21.
are installed and fastened in parallel. This causes the handle 22 to move to the first position.
It can be rotated only in the direction of the arrow in the figure.

Lower horizontal bars 140 on either side of the support body 14
A lever 26 is rotatably supported on the lever 2.
A brake plate 27 is rotatably supported at the tip of the brake member 6 . A guide column 28 is erected at the rear of the lower horizontal bar 14c corresponding to the rear end of the lever 26.
An adjustment handle 29 is screwed and supported to be movable up and down.

A pair of upper and lower rings 30 are located in the middle of the adjustment handle 29.
31 are fixed at appropriate intervals, and the lever 26
A fork at the rear end extends between the rings 30, 31, and a pressure spring 32 is interposed between the upper ring 30 and the fork.

A bearing bar 35 is installed between the intermediate portions of the pair of left and right columns 14b, and a support bracket 36 is suspended and supported at the intermediate portion of the pair of left and right upper horizontal bars 14d that constitute the support body 14. A bearing bar 37 is installed between the lower ends of the upper horizontal bar 14d. Double wheel support bar 35
．． Support shafts 38 and 39 are rotatably installed between the left and right ends of the bearing bar 37, and an operating lever 40 is fixed to the protruding end of one of the support shafts 38 that protrudes from the bearing bar 35. At the same time, an operating knob 41 is slidably attached to the tip of the operating lever 40. Further, a transmission lever 42 is fixed to the other support shaft 39 protruding from the bearing bar 35. The tips of both levers 40.42 are connected by a transmission rod 43, and both levers 40.42 are connected by a transmission rod 43.
and the transmission rod 43 constitute a parallel four-bar link mechanism. Therefore, when the operating lever 40 is rotated by operating the operating knob 41, both the support shafts 38 and 39 are rotated by the same amount in the same direction.

A plurality of eccentric cams 44A and 44B are fixed in parallel on the support shaft 38 between the two wheel receiving bars 35 and 37, and the odd-numbered eccentric cams 44A group and the even-numbered eccentric cams 44 from the front side.
The B group is arranged with an angular difference of 180°. Similar eccentric cams 45A and 45B are fixed in parallel on the other support shaft 39, and the odd-numbered eccentric cam 44 from the front side
The A group and the even-numbered eccentric cam 44B groups are arranged with an angular difference of 180''.
0 is in the hanging state, the eccentric cam 44A.

Both levers 40.42 and eccentric cams 44A, 44B, relative to the support shaft 38.39, so that the uppermost parts of the cam surfaces of 44B and eccentric cams 45A, 45B are all at the same height position.
The angular positional relationship is set for the installation of 45A and 45B.

A pair of fitting holes 35a are transparently provided at a portion of the bearing bar 35 corresponding to the rotation locus of the shaft 41a of the operation knob 41.
The shaft 41a can be fitted into both fitting holes 35a.

A guide member 46 is erected at both upper horizontal bars 14d between the support column 14b and the support bracket 36.
A plurality of guide grooves 46a are formed on the opposing surface side.

The number of guide grooves 46a is greater than the number of eccentric cams 44 on one support shaft 38.
The number of sheets is the same as that of A and 44B, and the guide groove 46a and the eccentric cam 44A.

44B lost one time in the front-back direction.

A holding frame 24 for the reed device is installed and supported between the two branches 14b in the vicinity of the mounting position of the support bracket 17.

A support bracket 64 is fixed on the upper rear end of the pedestal 14a, and a back roller 65 is provided between both brackets 64.
is rotatably supported.

When the warp threads of the warp beam on the loom are consumed, the loom device, for example as disclosed in Japanese Patent Application Laid-Open No. 63-99355, detects the warp cut of the empty warp beam on the loom by means of a warp cut detection device, which has passed its warp threads. The loom, together with the heald frame and reed, is carried to the preparation room, and the loom with the above-mentioned structure and the preparation support are transferred onto a table as shown in FIG. Both left and right bearing portions 47a of the empty warp beam 47 are attached to the mounting recess 15.
After being temporarily placed on the guide groove 15a, it is rolled onto the mounting recess 15c. Due to this transfer arrangement, the brake plate 27
is pressed against the flange portion of the empty warp beam 47 by the action of the pressing spring 32, and rotation of the empty warp beam 47 is prevented. By hooking the hook 33 to the warp beam shaft 47b, lifting of the empty warp beam 47 due to the action of the pressing spring 32 is prevented, and the empty warp beam 47
will not come off from the mounting recess 15c.

On the other hand, a warp cut detection device 48 incorporating a large number of droppers 48a is mounted between the mounting recesses 16a of both the left and right support brackets 16. Also, multiple heald frames 49A, 49B
are inserted into the guide grooves 46a of the pair of left and right guide members 46 and moved downward, and the eccentric cams 44A, 44B, 45A, 45
It is placed and supported on the cam surface of B. Each eccentric cam 44A, 4
4B.

Since the uppermost parts of the cam surfaces of 45A and 45B are at the same height, the warp threads T passing through each heald frame 49A and 49B are in a closed state. Further, the reed 50 is placed and held on the holding frame 24. A cloth W is attached to the tip side of the warp thread T1 of the empty warp beam 47.
is left behind, and the needle 20 on the winding roller 19 is inserted into this cloth W.

If the handle 22 is rotated from this state, the warp threads T1 are pulled and taut. This will cause the sky warp beam 4
The path of the warp T1 from 7 to the reed 50 is between the warp path and the path on the loom. After the warp threads are tensioned, a tape is attached to the warp T1 row in its width direction, and the attached portion is cut along the tape. Then, for the preparation stage of the machine, the empty warp beam 47 is removed from the stand and a full warp beam 51 is mounted instead as shown in FIG.
1 warp thread T2 and diameter thread T1 are tied one by one using a splicing device. At this time, the tip side of warp thread T2 is also pasted with tape, and the pasted parts of both warp threads TI and T2 are tied together by an appropriate means. Yarn splicing work is performed by pinching and supporting.

After the yarn splicing is completed, the tape is removed and the adjusting handle 29 is screwed and moved, for example, to the position indicated by the chain line in FIG. Then, when the handle 22 is rotated, the full wap beam 51 rotates while receiving the braking action of the brake plate 27, and both the old and new warp threads T2. The knot t of T1 is pulled through the warp cut detection device 48. The knot t is detected by the warp cut detection device 48
After passing through, the rotation operation of the handle 22 is temporarily stopped,
The operating lever 40 is rotated to fit the shaft 41a of the operating knob 41 into either the left or right fitting hole 35a as shown in FIG. As a result, the eccentric cam 44A on the support shaft 38
, 44B, the uppermost part of one group of eccentric cams 44A moves downward, and the uppermost part of the other group of eccentric cams 44B moves upward, as shown in FIG. are moved downward from the closed position, and the even-numbered heald frames 49B are moved upward from the closed position.

The heald frame 49A group and the heald frame 49B group are vertically displaced relative to each other, thereby opening the warp line.

The warp threads T1 are passed through the insertion holes of the heald frame 49A and the heald frame 49B in order from the end, so that adjacent warp threads are vertically separated from each other. If the rotation of the handle 22 is resumed after this open state, the heald thread will gradually separate into upper and lower heald frames and be pulled through the heald frames 49A, 49B, and when the heald thread is in the closed state, it will move approximately - in the width direction. The knots t, which were aligned directly on the warp, are divided into two groups along the upper and lower warp lines. Therefore, even if the warp threads are intertwined with each other, this intertwining is gradually resolved, and the heald frames 49A, 49B The entanglement disappears before . As a result, the warp threads are attached to the heald frame 49A.
, 49B are pulled through smoothly.

Moreover, since the entanglements are gradually resolved, the warp tension does not increase suddenly and warp breakage does not occur.

In addition, when the warp series is in a closed state, the thread density is high near the knots t that are aligned approximately on a straight line in the width direction, and it is difficult to pass through the heddle frame if this continues. In the open state where the heald frames 49A and 49B are opened, the thread density at the insertion portions of the heald frames 49A and 49B is significantly reduced. Therefore, the knot t also passes smoothly through the heald frames 49A and 49B.

Smooth drawing of the warp yarns in this manner also makes it possible to increase the drawing speed, and a machine workpiece without yarn breakage can improve the efficiency of preparatory work. In addition, the structure in which the warp series are opened facilitates the twill removal work before thread splicing, and also makes it easier to detect entanglements between the upper and lower warp thread rows. Further, even when the knot t passes through the dropper 48a of the warp cut detection device 48 or the reed 50, the knot t is separated vertically, and as a result, the knot t can be detected at warp passing members other than the heald frames 49A and 49B. Passage resistance is reduced, and the efficiency of preparation work for the machine on the bench is further increased.

As shown in FIG. 5, after the knot t has passed through the reed 50, the operating lever 40 is returned to the hanging position and the heald frames 49A, 49B are
Return to the closed position and cut and remove the knot to complete the threading operation.

The present invention is, of course, not limited to the above-mentioned embodiment, but also includes the embodiments shown in FIGS. 6 and 7, for example.

In the embodiment shown in FIG. 6, the guide groove 52a of the guide member 52 that guides the heald frames 49A, 49B has a dead end at the lower part, and the heald frames 49A, 49B are supported by the guide member 52. Directly below the left and right ends of the heald frames 49A and 49B supported by the guide member 52, a support shaft 53 is arranged so as to be rotatable in the front and rear direction, and on both support shafts 53, a plurality of eccentric cams 54 are mounted. is fixed directly below the heald frame 49A. A worm wheel 55 is fixed to the front end of one of the support shafts 53, and a chain 56 is passed between the two support shafts 53 via a sprocket 25, and is meshed with the worm wheel 55. By rotating the worm 57, the eccentric cam 54 is rotated. This results in a heald frame 49A.

Only one of the heald frames 49A of the heald frames 49B is arranged upwardly, and the longitudinal series is opened by relative displacement between the heald frames 49A and 49B. This opening provides the same effect as described above.

In the embodiment shown in FIG. 7, the guide groove 58b of the guide member 58 into which the heald frame 49B is inserted penetrates downward, and the guide groove 58a into which the heald frame 49A is inserted has a dead end. A support bar 59 is disposed directly below the left and right ends of the heald frames 49A, 49B so as to be movable up and down.
9 has a support projection 59a erected directly below the heald frame 49B.

That is, the heald frame 49A is supported by the guide member 58, and the heald frame 49B is supported by the support bar 59.

The support bar 59 is provided with a rack portion 59b, and a pinion 6o is meshed with the rack portion 59b. A worm wheel 61 is arranged parallel to the support shaft of the pinion 60, and by rotating a worm 62 meshing with the worm wheel 61 with a handle 63, the support bar 59
moves up and down.

The support bar 59 is always disposed at the uppermost moving position, and at the uppermost moving position, the heald frame 49A is at the same height as the remaining heald frames 49B. Therefore, by moving the support bar 59 downward by rotating the handle 63, the heald frame 49A moves downward and the warp threads are opened. Of course, a configuration in which the heald frame 49A is moved upward is also possible.

[Effects of the Invention] As described in detail above, the present invention provides a structure in which a receiver is a heald frame by vertically displacing a part of a plurality of heald frames supported on a support body constituting a stand and the rest of the heald frames relative to each other. Since the warp threads are drawn through the heald frame, the warp threads are gradually separated vertically as they pass through the heald frame, thereby reducing the passing resistance when passing through the heald frame and allowing the warp threads to be drawn smoothly. It has this excellent effect.

[Brief explanation of drawings]

1 to 5 show an embodiment embodying the present invention.
The figure is a side view showing the empty warp beam and the warp member with its warp threaded through it mounted on the stand, Figure 2 is a perspective view of the main part, and Figure 3 is a full warp beam in place of the empty warp beam. 4 is a perspective view of the main parts showing the opened state, and FIG. 5 is a side view showing the threading completed state.
6 and 7 are perspective views of main parts showing other examples. Support body 14, operating lever 40 and eccentric cams 44A, 44B, 45A that constitute the opening/closing mechanism. 45B1 Warp Tl, T2゜

Claims (1)

[Claims] 1. A support body that removably supports at least the warp beam, a plurality of heald frames and reeds through which the warp threads of the warp beam are inserted, with a positional relationship that allows the warp threads of the warp beam to be supported in substantially the same shape as the warp delivery shape of the loom. and a warp pull-out mechanism that pulls out the warp threads of the warp beam all at once via the heald frame on the support body and the reed, in which a plurality of heald frames supported on the support body are provided. A cradle for preparing a loom for a loom, which is equipped with an opening/closing mechanism for vertically displacing a part of a plurality of heald frames and the rest of the heald frames relative to each other.