JP3509697B2 - Method and apparatus for fixing a yarn sheet leading end to a warping drum of a cone type partial warping machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for fixing a yarn sheet starting end to a warping drum of a cone type partial warper.

[0002]

In the known partial warping method, a group of yarns is wound as a yarn sheet on a cone drum, cut when reaching the end of the yarn sheet, and formed into a second yarn layer beside the first yarn layer. To be done. This process is repeated until the warping drum is full. The thread sheet starting end is hung on each hook strip provided on the warping drum. Therefore, during the beam rewinding operation, the warp yarn can be rewound with the set rewinding tension until the final one turn. However, this hanging requires great care of the operator and cannot be automated.

For the purpose of automatic operation, it is known that the thread sheet is not cut when the first thread layer is finished, but is automatically lifted to the thread sheet starting end of the next thread layer. At that time, all the leading ends of the thread sheets are loosely placed on the warping drum. As a result, at the end of the beam rewinding process, that is to say the last 5 to 8 turns, the rewinding tension cannot be maintained and must be reduced to the desired minimum warp tension. Therefore, a pressing roll is additionally used, which is pressed against the warp drum and the yarn above it in order to increase the frictional force. Such pressing rolls with an associated drive are expensive and impact the grooves provided in the warping drum.

[0004]

The object of the invention is a warping drum of a cone type warping machine, which can be carried out easily and wholly or partly automatically. It is to show a measure to fix the leading end of the thread sheet.

[0005]

According to the invention, starting from the preamble of claim 1, the first double-sided adhesive tape is inserted into the longitudinal groove of the waist of the warping drum over the working width. The second one-sided adhesive tape has its free end fixed to the first adhesive tape, and after the start end of the first thread sheet is attached,
A second adhesive tape is placed on this leading edge and solved by placing the second adhesive tape on each leading edge after the attachment of the respective leading edge of each trailing thread sheet.

When the leading end of the thread sheet is placed on the warping drum, temporary adhesion occurs on the first adhesive tape in the groove. This adhesion is enhanced when the second adhesive tape is placed on the leading end of the thread sheet. A particularly reliable bond is obtained because the second adhesive tape is pressed in the direction of the first adhesive tape when the yarn sheet is wound on the warping drum. As a result, it does not matter whether the new thread sheet start is in each case separated from the thread sheet end of the preceding thread layer or is automatically transferred to a new winding location without such a cutting process. In any case, it is possible to rewind the warp beam with the set rewind tension until the last one turn.

[0007] Preferably, the second adhesive tape is wound into a roll, and is unwound when placed on each starting end. This payout is a particularly simple way of placing the second adhesive tape on the leading end of the thread sheet.

In order to solve the problems posed with respect to the design, the device according to the preamble of claim 3 comprises a longitudinal groove of the warping drum, a first double-sided adhesive tape in this longitudinal groove, and a second It is characterized by a roll made of a single-sided adhesive tape and a roll support which is slidable along the longitudinal groove and rotates together with the warping drum.

The roll support is easy to handle, either manually or automatically, and is sufficiently small to rotate with the warp drum. The additional components required for the fastening device are inexpensive.

Particularly preferably, the leg portion of the roll support is a lead rod (for separating the warp yarn,
(Also referred to as a rod, a twill rod, or a tambo) , and the Leeds rod is guided in a Leeds rod holder provided in the warping drum cone. Therefore, the roll support thus constructed can be operated (pulled) as a known twilling rod, which facilitates automation.

[0011] Preferably, the roll support is an integrally formed thin plate product. By doing so, it becomes a simple and reliable component.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below in detail based on preferred embodiments with reference to the drawings.

The cone type partial warping machine 1 shown in FIGS. 1 to 3 has a warping drum 2 on which a plurality of yarn layers 3 are already present. The thread layer 3 has a gradient corresponding to the cone of the cone type partial warper 1 and each comprises a thread sheet 4.
The thread sheet 4 is formed by a group of threads that are drawn together from the creel 5. When the yarn layer 3 is warped, the warping drum 2 rotates in the direction of arrow 6. At the beginning of each yarn layer 3, the starting end portion 7 of the yarn sheet 4 is adhered to the warp drum 2 by an adhesive joint 8.
It is fixed to. After that, that is, when rewinding, when the warp drum 2 rotates in the direction of the broken line arrow 9 and the entire warp sheet 10 is wound up on the common warp beam 11, the rewinding reaches virtually the last one. It can be performed without reducing the rewind tension.

Warping drum 2 to produce an adhesive bond 8.
A longitudinal groove 12 is provided on the peripheral surface of the warp, and a first double-sided adhesive tape 13 is provided in the longitudinal groove. The adhesive tape 13 extends over the entire working width of the longitudinal groove 12 of the warp drum 2.
Inserted in. The thread at the starting end 7 of each thread sheet 4 is placed on the adhesive tape 13. Further, there is a second one-sided adhesive tape 14, and this adhesive tape 14 is pressed firmly against the thread sheet starting end portion 7 by radial pressure during the time period so that the thread sheet starting end portion 7 is pressed against the first adhesive tape 13. The second adhesive tape 14 is pulled out from the roll 15. The roll 15 is slidable parallel to the axis of the warping drum 2. The roll 15 is held by a roll support 16 which is constructed as a single piece of bent sheet metal, and the roll support 16 is one of the two mounting brackets (ears) 17 for supporting the roll 15 and the lead rod. And a leg portion 18. The leg portion 18 is guided in a Leeds rod holder (not shown). The roll support 16 can be adjusted manually or automatically, as suggested by the automatic rod device (entrainer) 19 shown in phantom in FIG. 1 and as is known per se for Reeds rods. In FIG. 3, the driver 19 is shown as part of the automatic rod device.

The details are processed as follows. First, the first adhesive tape 13 is inserted into the groove 12. The roll support 16 is moved to the right in FIG. 1 within the cone range. Therefore, the starting end portion of the second adhesive tape 14 is also manually pressed to be joined to the first adhesive tape 13. The thread sheet 4 is then placed on the warp drum 2 with its leading end 7 next to the cone. The roll support 16 is moved to the left so that the yarn at the yarn sheet starting end portion 7 is completely covered. This can be done with the usual automatic rod device as suggested by the driver 19. Next, the first yarn layer 3 is produced by warping the yarn sheet 4. If the desired thread layer height is reached, first
The thread sheet 4 is displaced to the left relative to the warp drum 2, whether after the thread layer 3 is cut off or by automatically riding on a new mounting point on the warp drum 2. . On the other hand, the roll support 16 is pulled to the left,
At that time, the second adhesive tape 14 is unwound and placed on the thread of the thread sheet starting end portion 7. This process is repeated for each yarn layer 3 until the yarn has been fed to the entire working width of the warping drum 2.

Adhesive bonding is preferably performed at position 0 ° when the warp drum 2 is stopped, ie at the upper end of the warp drum. The roll support 16 rotates together with the warping drum 2. Immediately before reaching the 0 ° position, a normal Ayatori reed (Schieberi
et) is used to cause the starting end portion 7 of the new thread sheet 4 to pass by the side of the roll 15. Next, at the 0 ° position, the roll support 16 is displaced by the entrainer 19 by the width of one warp band.

After the warping process is performed in this manner, the next time the rewinding is performed, the warping drum can be rewound while maintaining the rewinding tension until the final one turn. Only during the last one rotation, the warp drum 2 is stopped, the warp ends are pulled out from the grooves 12, and the warp yarns are cut at the adhesive joints.

[0018]

According to the present invention, the novel adhesive bond can be manufactured at low cost, does not require a large expenditure,
Very good results. Therefore, it contributes to the reduction of the manufacturing cost of the warper. It is also possible to equip already delivered machines with additional equipment.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view of a cone type partial warping drum including a fixing device according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the warping drum showing a state during warping and rewinding.

FIG. 3 is a perspective view schematically showing an automatic rod device.

[Explanation of symbols]

1 cone type warping machine 2 Warping drum 3 thread layers 4 First thread sheet 5 creel 7 Starting part (of thread sheet) 8 Adhesive bonding 10 warp sheet 11 beams 12 Longitudinal groove 13 First adhesive tape 14 Second adhesive tape 15 rolls 16 roll support 17 Mounting bracket 18 legs 19 Takeshi

Continuation of the front page (56) References JP-A-55-22091 (JP, A) JP-B-52-17561 (JP, Y2) (58) Fields investigated (Int.Cl. ⁷ , DB name) D02H 13 / 36 D02H 9/02 D02H 13/34

Claims (5)

(57) [Claims] 1. A method for fixing a yarn sheet starting end portion to a warping drum of a cone type warping machine, wherein a first double-sided adhesive tape (13) extends a longitudinal length of a waist portion of the warping drum (2) over a working width. After being inserted into the groove (12), the free end of the second one-sided adhesive tape (14) is fixed to the first adhesive tape (13), and after attaching the starting end portion (7) of the first thread sheet (4),
The second adhesive tape (14) is placed on this starting end portion (7), and after mounting the starting end portion (7) of each succeeding thread sheet, the second adhesive tape (14) is attached to each starting end portion (7). A method characterized by being placed on. 2. A method according to claim 1, characterized in that the second adhesive tape (14) is wound into a roll (15) which is unwound when placed on each starting end (7). 3. A device for fixing a yarn sheet starting end portion to a warping drum of a cone type warping machine, wherein a longitudinal groove (12) of the warping drum and a first double-sided adhesive tape in the longitudinal groove (12) are provided. (13), a roll (15) made of a second single-sided adhesive tape (14), and a roll support (1) slidable along the longitudinal groove (12) and rotating together with the warping drum (2).
6) A device characterized by the above. 4. A leg (18) of the roll support (16) is configured as a reed rod, and the reed rod is guided in a reed rod holder formed in a warping drum cone. The device according to claim 3, wherein 5. Apparatus according to claim 3 or 4, characterized in that the roll support (16) consists of a single piece of bent sheet metal.