JPH027888Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to an improvement in a static electricity removing device used in the final winding stage of a warp preparation machine such as a warping machine, a gluing machine, or a beam rewinding machine.

Prior Art The warp yarns supplied to the loom in the weaving process pass through preparatory machines such as a warping machine, a gluing machine, and a beam rewinding machine (hereinafter simply referred to as a warping machine, etc.) as a preparatory process, and then finally , finished in the shape of a loom beam. The final stage of each of these warp yarn preparation machines winds up a so-called yarn sheet, in which a large number of warp yarns are arranged in parallel in a plane, onto a flanged beam, and the warp yarns on this beam are The mutual spacing is regulated, for example by a zigzag comb, in order to optimize the processing and unwinding in subsequent steps.

On the other hand, the warp threads running in a sheet form inevitably generate static electricity due to contact running with the zigzag comb and various rollers, and the static electricity charged in the warp threads in this way is absorbed by each warp thread when it is wound onto a beam. This results in irregularities in the shape of the beam winding, fluctuations in thread tension during unwinding, or
This may cause thread breakage accidents.

Therefore, various types of static electricity eliminators have been devised in warper machines, etc. in an effort to eliminate such inconveniences, but the most common one is a large number of needle electrodes connected to a high-voltage power source. are lined up in a row, and a ground electrode is provided in parallel.A static elimination electrode is placed across the thread sheet, parallel to the thread sheet, near the thread sheet on the upstream side of the beam, and connected to the needle electrode and ground. By ionizing the air by the corona discharge generated between the electrodes and making the air near the yarn sheet highly conductive,
The purpose is to neutralize the static electricity charged on each warp thread.

However, even with such a static eliminator, when winding a yarn sheet onto a flanged beam,
It is extremely difficult to completely remove static electricity from the warp yarns at both ends of the beam, and large irregularities often occur at both left and right ends of the outer surface of the yarn layer of the wound beam. This phenomenon occurs because the warp yarns at both ends of the yarn sheet have a large bending angle with respect to the zigzag comb and yarn alignment reed, and therefore,
As the beam is subjected to strong friction, multiple electrostatic charges occur, and ions in the air are adsorbed by the beam flanges at both ends of the beam, which not only reduces the ion concentration in the air in that area. This is because the yarn sheet moves due to the thickening of the beam, making it impossible to perform static elimination to a certain level, but no practical countermeasures for this problem have hitherto been known.

Purpose of the invention Therefore, in view of the problems of the prior art, the purpose of this invention is to arrange a static elimination electrode across the yarn sheet and parallel to the yarn sheet, and to provide auxiliary static elimination electrodes near both ends of the yarn sheet. By increasing the ion concentration of the air in the area where the thread sheet travels, the static electricity charged on the warp threads of the thread sheet can be effectively neutralized as a whole. An object of the present invention is to provide a new static electricity eliminator such as a warper, which can almost completely eliminate the occurrence of irregularities in yarn layers at both ends of a beam even when the beam is wound up.

Structure of the invention The structure of this invention to achieve the above object is that a static elimination electrode is disposed parallel to the thread sheet across the thread sheet near the length measuring roller on the upstream side of the beam that winds the thread sheet. , auxiliary static eliminating electrodes are placed near both ends of the yarn sheet at the intermediate position in a direction substantially perpendicular to the yarn sheet, and the length of the auxiliary static eliminating electrode is at least close to the distance traveled by the yarn sheet due to the thickening of the beam. By doing so, the ions generated by the auxiliary static elimination electrode replenish the ions that are lost due to adsorption to the beam flange and prevent the ion concentration from decreasing at both ends of the yarn sheet. The gist is that the static electricity removal effect can be maintained at a sufficiently high level even for the warp yarns at both ends.

Example Examples will be described below with reference to the drawings.

A static electricity removing device in a warping machine, etc. consists of a static electricity removing electrode 11 disposed at an intermediate position between the length measuring roller 2 and the beam 1 with a flange 1a, and two auxiliary static electricity removing electrodes 12, 12 (see Fig. 1). , Figure 2).

A large number of warp threads W, W... are arranged in a plane to form a thread sheet S, which progresses in the direction of arrow A1 in the figure,
It is wound up into a beam beam 1 rotating in the direction of arrow A2 via a length measuring roller 2. A zigzag comb 3 is provided upstream of the length measuring roller 2, and regulates the mutual spacing between the warp yarns W forming the yarn sheet S.

The length measuring roller 2 is a roller that is passively driven as the yarn sheet S advances, and is driven by the output of a tacho generator (not shown) provided at the end of its shaft.
This controls the driving speed of the beam 1.

The beam 1 is a reel having a flange 1a, and is called a warping beam in a warping machine, a section beam in a gluing machine, and a warp beam or loom beam in a beam rewinding machine. It is. However, in this specification, the term "beam" is used to refer to the winding frame itself and to the thread sheet S rolled up into a cylindrical shape, according to customary practice, and when the reference numeral 1 is given, the former is When the symbol B is given, it refers to the latter.

The static elimination electrode 11 and the auxiliary static elimination electrode 12 have the same structure, but have different lengths. That is, the static elimination electrodes 11 and 12 are installed in a support pipe 24 having a notched side in the longitudinal direction, and a high-voltage insulated cable 2
3, a large number of needle electrodes 21, 21... are arranged in a row to reach the conductor 23a by penetrating the insulating coating 23b, and the needle electrodes 21, 21 are
It is assembled by arranging ground electrodes 22, 22 in parallel on both sides of ... (Fig. 4). Needle electrodes 21, 21
The distance between them is, for example, about 10 mm, and the static elimination electrode 11 has a length sufficient to cross the yarn sheet S, and also has a length that is sufficient to cross the yarn sheet S in the vicinity of the length measuring roller 2 and parallel to it. It is arranged near the back side of the same (Fig. 1, Fig. 2).

The auxiliary static eliminating electrodes 12, 12 are disposed near both ends of the yarn sheet S at a position between the length measuring roller 2 and the beam 1, and the direction thereof is approximately perpendicular to the yarn sheet S, and The length L, at least at the attachment position, is set to a value close to the moving distance d based on the moving angle θ at which the thread sheet S moves in accordance with the winding thickness of the beam B (FIG. 3).

Each needle electrode 21, 21, .
is connected to the output terminal of the high voltage power supply 13 (FIG. 5), and a high voltage is applied between it and the ground electrode 22.
Corona discharge occurs between 1 and 22, and therefore,
It can ionize the air around it well.

Now, when the yarn sheet S is wound onto the beam 1 after passing through the zigzag comb 3 and the length measuring roller 2, the yarn sheet S travels while being in contact with mechanical components including the zigzag comb 3 and the length measuring roller 2. , the warp yarns W, W, . . . forming the yarn sheet S are charged with static electricity. On the other hand, a static elimination electrode 11 is disposed near the length measuring roller 2 across the yarn sheet S, so that the yarn sheet S is exposed to a conductive atmosphere consisting of air ionized by the static elimination electrode 11. The static electricity charged on the warp threads W, W, . . . is neutralized and removed by this conductive atmosphere. Therefore, since the auxiliary static eliminating electrodes 12, 12 disposed on both sides of the yarn sheet S also ionize the air and increase the ion concentration in the air at both ends of the yarn sheet S, only the static eliminating electrode 11 In this case, the static electricity charged on the warp yarns W, W, . At this time, the auxiliary static elimination electrode 12 is placed in a direction substantially perpendicular to the thread sheet S,
In addition, since the length L is at least close to the moving distance d of the thread sheet S due to the thickening of the winding of the beam B, from the beginning to the end of the winding process of the beam B, the auxiliary static eliminating electrode 12 and the thread sheet The relative distance from the side edge of S is kept substantially constant, and therefore the static electricity removal effect described above can also be kept constant.

Note that the distance between the needle electrodes 21, 21, . . That is, regarding the static elimination electrode 11, the thread sheet S at both ends thereof
In the range facing both side ends of the auxiliary static elimination electrode 12, and in the range facing the side end of the thread sheet S moving during winding, rows of needle electrodes 21, 21... are arranged, respectively. By increasing the density, the amount of ions generated in that portion can be increased, so that the effect of removing static electricity from both ends of the yarn sheet S can be further improved.

In addition, it is also possible to arrange static elimination electrodes of appropriate lengths in the running direction of the thread sheet S at both ends of the thread sheet S on the upstream side of the length measuring roller. Effective in removing electricity.

Effects of the invention As explained above, according to this invention, in addition to the static elimination electrode installed across the yarn sheet near the length measuring roller of a warper, etc. By providing an auxiliary static elimination electrode having a length at least close to the travel distance of the yarn sheet in the direction, the ion concentration of the atmospheric air in the area where the side edge of the yarn sheet travels can be particularly increased. Therefore, it is possible to achieve the necessary and sufficient static electricity removal effect even at both ends of the moving yarn sheet, and therefore, the occurrence of irregularities in the yarn layer at both ends of the beam, which tended to be a problem in the past, can be achieved. It has the excellent effect of being able to almost completely suppress the

In addition, since the auxiliary static elimination electrodes are placed on both sides of the thread sheet in a direction perpendicular to the thread sheet, there is no risk of any hindrance to work when attaching or removing the beam. It also has the above benefits.

[Brief explanation of the drawing]

Figures 1 to 5 show examples, Figure 1 is an overall perspective explanatory view, Figure 2 is an overall side view, Figure 3 is an enlarged explanatory view of main parts of Figure 2, and Figure 4 is a static elimination electrode. 5 is an enlarged cross-sectional view of the auxiliary static elimination electrode, and FIG. 5 is an electrical system diagram. S... Thread sheet, B... Beam, L... Length of auxiliary static elimination electrode, d... Swinging distance of thread sheet, 1...
... Beam, 2 ... Length measuring roller, 11 ... Static elimination electrode, 12 ... Auxiliary static elimination electrode, 13 ... High voltage power supply,
21... Needle electrode, 22... Ground electrode.

Claims (1)

[Scope of utility model registration request] A static elimination electrode is disposed near a length measuring roller installed upstream of a beam that winds up a yarn sheet, and is disposed across the yarn sheet and parallel to the yarn sheet, and A warping machine characterized in that auxiliary static elimination electrodes are provided near both ends of a yarn sheet in a direction substantially perpendicular to the yarn sheet, the length of which is at least close to the distance traveled by the yarn sheet due to the winding thickening of the beam. Static electricity eliminator such as