KR101248795B1

KR101248795B1 - Heald of Plastic Material

Info

Publication number: KR101248795B1
Application number: KR1020100016499A
Authority: KR
Inventors: 에른스트 하이네만; 데에르. 요한네스 브루스케
Original assignee: 그로츠-베케르트 카게
Priority date: 2009-02-26
Filing date: 2010-02-24
Publication date: 2013-04-03
Also published as: JP5697817B2; CN101818398A; EP2224046B1; JP2010209509A; KR20100097605A; EP2224046A1; CN101818398B

Abstract

The heald 7 according to the invention comprises a threaded region 9 having a threaded 10 bounded by two strips 12, 13 parallel to each other. The transition from the blind region 9 to the shafts 23, 24 is provided by the guide surface sections 21, 22 having a Z-shaped cross section. The two parallel legs 32, 33 of the Z-shaped cross section support the guide surfaces 35, 36, and the warp yarn 3b can pass past the guide surfaces without contacting the edge of the heald 7. .

Description

Heald of Plastic Material

The present invention relates to a heald for a loom. The weaving machine includes a number of healds that act as guides for warp threads. Each heald has at least one heald eye through which the warp moves. Additional warp moves through the gap between adjacent healds.

Many proposals have been made to improve the hills. In general, the hills are made of metal, for example a thin strip of steel sheet metal.

DE 43 36 362 discloses a heal of strip steel or alternatively fiber reinforced plastic material. The heald has a threaded region comprising a thread eye bounded by two strips. The two strips are arranged to be oriented parallel to each other. Viewed in the longitudinal direction of the warp, the two strips are laterally biased relative to each other. At the top and bottom of the bobbin region, there is a transition region adjacent to the bobbin, which transitions terminate in a flat shaft. The transition regions are inclined with respect to the warp direction. Due to this inclined position, warps disposed between the hills move along the edges of the transition region.

Other healds are known from US 5,348,055. This heald consists of a flat metal strip with end side end lugs. At approximately the center, there is an opening bounded by two strips. The area around the gap forms the gap. The strips are curved from the plane of the flat metal strip so that these strips are laterally biased relative to each other and laterally spaced apart from each other with respect to the warp direction to form a clearance. Each of the straight and planar strips terminates in a shaft in the region of the top and bottom of the bobbin. As a result of this, the thread has sharp corners at the top and bottom when viewed in the longitudinal direction of the thread.

Moreover, DE 10 2005 030 632 A1 discloses a heald of a plastics material, the heald having a gap bounded by two strips laterally biased relative to one another. At the top and bottom, thick areas configured as lamps are adjacent to the eye, and the lamps are arranged to keep the adjacent hills at a distance and to carefully guide the yarn moving between the hills through the respective blinds.

It is an object of the present invention to provide thin heels of plastic material, hereinafter referred to as plastic healds, which are particularly smooth on yarns moving outward through the heels.

This object is achieved by a heald according to claim 1.

The plastic heald according to the invention comprises a heald body having a blind area and two guide surface sections adjacent the blind area, the guide surface section terminating at the base body of the heald, ie its shaft. The bobbin area has a bobbin bounded by two strips parallel to each other. The guide surface extends away from the strip across the guide surface section to the heald shaft. A particular feature of the plastic heald according to the invention is the construction of the guide surface section. This guide surface section has a cross section comprising three different zones. The central region of the cross section represents a straight or curved connecting strip, where the legs extend away from both sides of the two ends of the strip. Guide surfaces are provided on the flanks of the legs. In cross section, the two edges of the legs forming the guide surfaces are arranged on lines, which lines are parallel to each other.

As a result of this means, a guide surface section is obtained which requires very little material and thus produces a low weight hill. However, the guide surfaces or the lines described above are not only parallel to each other, but also essentially parallel to the direction of passage of the blind which may be approximately equivalent to the warp direction. This direction is also parallel to the flat sides of the heald shaft and preferably to the flat sides of the strips delimiting the blind. By this measure, warp yarns traveling between the heels can pass through the flanks of the heels, where the threads each contact one surface but not the edges of the heels. This reduces the wear of the heels and the possibility of seal damage. Delicate yarns can be processed by the plastic heels according to the invention. Sharpening or other effects of the edges of the heels due to increased wear of the heels will rarely induce any yarn damage.

The warp direction, which is preferably aligned with the large flat sides of the heald shaft and the guide surfaces of the guide surface section, is defined by the longitudinal direction of the warp with the shed closed. This "closed shed position" is provided when each of the heald shafts is in the same position.

Both the strips delimiting the eye and the legs of the guiding section are preferably composed of a flat material having a matching thickness. In addition, the transition from the flat sides of the shaft to the guide surfaces and to the outside of the strip bordering the blind is preferably smooth and free of steps. Further preferably, the thickness of the legs and the thickness of the shaft supporting the guide surfaces correspond to each other.

Optionally, the connecting strip provided on the guide surface section may have a thickness that is different from the thickness of the legs at at least one point. This measure extends to a wide range of configurations and enables the guide section to not need to be configured in a complementary manner on both sides. The result is that adjacent hills cannot themselves rest on each other in a planar manner. Thus, the non-complementary shape of the guiding surface section is used as a means for keeping adjacent hills at a distance. This offers particular advantages when water weaving techniques are used. Thus, the attachment of adjacent hills in the blind area is prevented.

To provide such non-complementary guide surfaces, it may also be advantageous if the width of the guide surface in the transition zone to each strip is smaller than in the transition zone to each heald shaft. A change in the width of the guide surface can continue from the first end facing the shaft, ie from the strip side end to the second end facing the strip, ie the shaft side end. The width of the guide surface at its first end may correspond to the width of each strip, and the width of the guide surface at the second end may correspond to the width of the shaft of the base body of the heald.

In the plan view, the connecting strip preferably has a triangular contour. This connecting strip may have a curvature, or may also be flat as desired. This may indicate increasing thickness towards the shaft.

The guide surface sections preferably have shapes that are not complementary to each other at their ends, while the bobbins may have contours that fit together in complementary ways at their ends.

The heald may have other spacing means. Such spacer means may be end lugs, for example, or may be arranged in other positions. Preferably such spacing means are protrusions, beads, strips or the like that can be arranged on the lateral surface of the heald.

Additional features of advantageous embodiments of the invention are the subject matter of the description, the drawings, or the claims. This description is limited to the essential aspects of the invention and other situations. The drawings are to be considered as supplementary references.

According to the present invention, the wear of the heels and the possibility of thread damage can be reduced, and the attachment of adjacent heels in the blind area can be prevented.

1 is a schematic representation of two heald shafts of a loom.
2 is a perspective view of a detail of a heald according to the invention with two warps;
3 is a schematic perspective view of the end lug of the heald according to FIG. 2;
4 shows a perspective view of the heald according to FIG. 2 showing the alignment of various parts of the heald;
5 is a side view of the detail of the heald according to FIG. 4;
6 to 10 show various cross-sectional views of the heald according to FIG. 5.
11-14 show views of various embodiments of hills with spaced apart means.

1 shows two heald shafts 1, 2 of the weaving machine, which healds the warp groups 4, 5 consisting of the warp yarns 3 up and down out of the warp plane and thus shed (6) move up and down alternately to open. The warp yarn 3 is combined with the heels 7 provided on the heald shafts 1, 2, the details of one of the heels being shown individually in FIG. 2. Preferably, the heald 7 consists of a part in the form of a narrow elongated strip representing the plastic body. At the upper end and preferably also at the lower end of the body, end lugs 8 may be provided respectively, as shown, for example, in FIG. 3. The end lug 8 may be an integral part of the heald 7 or may be a separate element fastened to the heald.

Heald 7 includes a blind area 9 with a blind 10. The thread 10 is arranged to guide the warp yarn 3a forming the warp yarn longitudinal direction 11. The warp direction 11 corresponds to the longitudinal direction of the warp 3a when the warp is guided from the warp plane towards the top or towards the bottom, ie when each heald shaft is in the closed shed position. FIG. 2 shows another warp yarn 3b which does not move through the thread 10 of the heald 7 shown in FIG. 2 but moves through the thread of the other heel of the other heel shaft. The warp yarn 3b moves through the slit formed between the heald 7 according to FIG. 2 and its adjacent heald. The thread 10 is bounded by the warp longitudinal direction 11 and two strips 12, 13 arranged parallel to each other and at a distance from each other in the transverse direction thereof. Moreover, externally flat sliding surfaces 14, 15 are provided, which are also evident especially from FIG. 6. FIG. 6 shows a cross section A-A of the heald 7, the side view of which is shown in FIG. 5.

The lengths of the slide surfaces 14, 15 extend across the entire blind area 9 indicated on the hill 7 between the dashed lines 17, 18 of FIG. 4 and terminate at these dashed lines. Thus, the dotted lines 17, 18 correspond to the ends of the blind area 9. The wall sections 19, 20 are adjacent to the bobbin 10 via a rounded transition, which closes the bobbin 10 towards the top and bottom as is apparent from FIG. 2. The wall sections 19, 20 still belong to the blind area 9. Dotted lines 17 and 18 represent the ends of the area. Here, the blind area 9 terminates in the guide surface sections 21, 22, respectively, whereby the shafts 23, 24 of the base body of the heald 7 adjoin the guide surface sections. The shafts 23, 24 are preferably arranged on a common plane in which the end lugs 8 according to FIG. 3 are arranged. In FIG. 4, strips 12, 13 are arranged above or below the plane.

FIG. 5 shows in particular the configuration of the guide surface section 22 in conjunction with FIGS. 6 to 10, wherein the following description of this section corresponds to the description of the guide surface section 21. Both guide surface sections are arranged arranged symmetrically with respect to each other with respect to the bobbin 10.

As is apparent from FIG. 6, the slide surfaces 14, 15 form an outer clearance 25 greater than twice the thickness of each strip 12, 13. The sliding surface 14, 15 terminates at narrow side portions on the rounded edges 27, 28, and the distance 29 of the narrow edges to be measured in the warp longitudinal direction 11 is preferably in the heels 7. It is greater than or equal to the width 30 (FIG. 4) of the shaft 23 (or 24) of the base body. The distance from each other of the edges of the strips 12, 13 facing each other forms a lug width 31a to be measured in the warp longitudinal direction 11, the lug width preferably each of the slide surfaces 14, 15. Is greater than the width.

The distance of the inner surfaces 14a, 15b of the slide surfaces 14, 15 is defined by the lug width 31b to be measured across the warp longitudinal direction 11, which lug width is preferably Less than or equal to the thickness 26 of 15).

FIG. 7 shows a cross section at the end of the blind area 9 with respect to the slide surface section 22 (sections B-B in FIG. 5). Here, the thickness to be measured between the ends of the slide surfaces 14, 15 is still only as large as the thickness 25. In this way, the cross section has a crank shape. This configuration comprises two straight legs 32, 33 connected to each other by a connecting strip 34. The outer surfaces of the straight legs 32, 33 preferably form trapeze-shaped guide surfaces 35, 36 whose cutting edges are parallel to each other. Thus, the cutting edges are on parallel lines 37, 38 with respect to each other, which are dotted lines in FIG. 7. The connecting strip 34 is arranged at an acute angle α (FIG. 8) with respect to the lines 37, 38.

The distance between the guide surfaces 35, 36 or the lines 37, 38 decreases along the guide surface section 22 toward the shaft 24 of the base body of the hill 7 and terminates at the large flat side 47. . This is illustrated in the order of sections C-C, D-D, E-E in FIGS. 8 to 10. In the entire area of the guiding surface section 22, the guiding surfaces 35, 36 are preferably arranged parallel to the warp longitudinal direction 11. As shown by FIG. 5 and by comparison of FIGS. 8 and 9, the width of the guiding surface 35 increases from the blind area 9 toward the shaft 24 of the base body of the hill 7. . The same applies to the guide surface 36. Preferably and for easier explanation, the angle α (shown only in FIG. 8) of the connecting strip 34 with respect to the warp longitudinal direction 11 remains constant over the entire length of the guide surface section 22. do. The warp longitudinal direction 11 is parallel to the lines 37, 38. 8 characterizes the angle of the connecting strip 34 by its centerline 39. The angle α shown here corresponds to the corresponding angle shown in FIGS. 7 and 9.

Moreover, as is apparent from the comparison of FIGS. 7-9, the thickness 42 to be measured between the two preferably triangular surfaces 40, 41 increases from the blind area 9 toward the shaft 24. . As shown by section DD of FIG. 9, the thickness 42 exceeds the thickness 43 of the shaft 24 of the base body of the heald 7 at least in part of the guide surface section 22 (FIG. 10). .

As is particularly evident from FIG. 9, the heald 7 does not have any complementary lateral surface shapes on the guide surface section 22, at least in part due to the above-described measures. The width B1 of the guide surface 35 of FIG. 9 is clearly greater than the width B2 of the recess on the opposite side. Preferably, B2 is constant along the guide surface section 22. Thus, adjacent similar hills cannot bind to each other so that they fit. Thus, the guide surface section 22 forms a means for maintaining a minimum distance between the hills. Thus, in a water jet loom, adjacent hills are prevented from sticking together due to the action of adhesion from water on the hills.

The hills 7 described so far are moved up and down during operation. As is apparent from FIG. 1 together with FIG. 2, the warp yarn 3b moves along the side of the heald 7 during the ascending and descending movements of the heald shafts 1, 2. In this way, the seal moves from the shaft 24 over the guide surface 35 onto the sliding surface 14 and below the thread 10 again over the guide surface 35 ′ onto the side surface of the shaft 24. do. As long as all of the surfaces are oriented in the warp longitudinal direction 11, the warp yarn 3b does not rub against the edge at any point. Therefore, the thread is processed smoothly. Also, the heald is smoothly processed. Over time, even if an edge is formed on the periphery of the guide surfaces 35, 35 ′, 36 and / or on the strips 12, 13 and / or on the sliding surfaces 14, 15, these edges are warp There is no possibility of damaging the warp yarn 3b as in (3a).

The heald 7 is particularly suitable for water weaving. By doing so, it is practical if additional spacing means are provided, which are provided in addition to or as an alternative to the above-described structure of the guiding surface sections 21, 22 described above.

For example, FIG. 11 shows this spacing means with the use of two adjacent hills 7, 7 ′. As can be seen, the end lugs 8, 8 ′ are thicker than the respective shafts 23, 23 ′, thus keeping the shafts 23, 23 ′ at a distance.

As shown by FIG. 12, it is also possible to provide a projection, for example in the form of a spacer 44, at a suitable point of the end lug 8, for example. Such beads may also be provided on the flat side of the heald. It is also possible to apply a large number of such beads distributed for example on the lateral surface of the end lug 8.

It has also been found to be practical if the hill has protrusions in the region of its aligned opening 45, and the protrusions act as spacers. FIG. 13 shows two adjacent heels 7, 7 ′ where each of the aligned openings 45, 45 ′ is surrounded by a tubular or ring-shaped protrusion.

As shown by FIG. 14, such tubular or annular protrusions 46 may be arranged on each heald 7, 7 ′ on the two flat sides of the heels.

Regardless of the specific configuration of the spacing means, it is practical when direct attachment of adjacent hills in the region of the end lugs 8 as well as in the region of the sills 10 as evident from the above description is prevented by suitable spacing means. to be.

The heald 7 according to the invention comprises a threaded region 9 having a threaded 10 bounded by two strips 12, 13 parallel to each other. The transition from the blind region 9 to the shafts 23, 24 is provided by guide surface sections 21, 22 having a Z-shaped cross section. Two parallel legs 32, 33 of the Z-shaped cross section support the guide surfaces 35, 36 whereby the warp yarns 3b can pass through the guide surface without touching the edge of the heald 7. Can be.

1, 2: Heel shaft 3, 3a, 3b: warp
4, 5: Warp Group 6: Shed
7: Heel 8: End Lug
9: blind area 10: blind area
11: warp longitudinal 12, 13: strip
14, 15: Slide surface 14a, 15a: Inside surface of 14, 15
17, 18: line 19, 20: wall section
21, 22: guide section 23, 24: shaft
25: thread width 26: thickness
27, 28: edge 29, 30: width
31a: lug width (measured in the yarn longitudinal direction)
31b: lug width (measured transverse to the yarn longitudinal direction)
32, 33: Leg 34: connecting strip
35, 36: guide surface 37, 38: line
39: centerline 40, 41: surface
42, 43: thickness 44: separation means
45: alignment opening 46, 46 ': ring protrusion
47, 48: flat side

Claims

A plastic heald (7) having a heald body made of a plastic material, the heald body being
A blind area 9 with an eye 10 formed therein, said eye area 9 bounded by two strips 12, 13 parallel to each other,
Two guide surface sections 21, 22 arranged on opposing ends 17, 18 on the blind area 9 and having guide surfaces 35, 36, respectively, and
Two shafts 23, 24 adjacent the guide surface sections 21, 22,
Each cross section of the guide surface sections 21, 22 is a connecting strip 34 and these legs connecting two parallel legs 32, 33 supporting the guide surfaces 35, 35 ′, 36. One leg of the teeth 32, 33, the connecting strip making an angle α with the two legs 32, 33,
The connecting strip 34 has a thickness different from the thickness 43 of the two legs 32, 33 at at least one point,
The connecting strip 34 has a triangular shape,
Plastic heald, characterized in that the thickness of the connecting strip (34) is increased in a direction away from the eye (10) of the seal.

2. The guide surfaces (35, 35 ', 36) and side surfaces (47, 48) of the shafts (23, 24) are flat and parallel to one yarn movement direction (11), respectively. Plastic heald characterized in that it is oriented.

Plastic heald according to claim 1, characterized in that the strips (12, 13) and the legs (32, 33) have a matching thickness (26).

The plastic heald of claim 1, wherein the legs (32, 33) and the shafts (23, 24) have a matching thickness (26).

delete

2. The strip-side end of the guide surfaces 35, 36 according to claim 1, wherein the two guide surfaces 35, 36 of each guide surface section 21, 22 are from the shaft-side end of the guide surfaces 35, 36. And, leading to said two strips (12, 13).

2. The guide surface (35, 36) of claim 1 having a first end facing the shafts (23, 24) and a second end facing the strips (12, 13), and on the first end. And a greater width than on said second end.

The width of the guide surfaces 35, 36 on the strips 12, 13 is less than half the width of the shaft, while the width of the guide surfaces 35, 36 on the shafts 23, 24 is the shaft. Plastic heald characterized by greater than half the width.

2. The width of the guide surfaces 35, 36 corresponds to the width of the strips 12, 13 on the first end facing the shafts 23, 24, and to the strips 12, 13. Plastic heald, corresponding to the width of the shaft (23, 24) on the facing second end.

Plastic heald according to claim 1, characterized in that the connecting strip (34) has at least one surface (40, 41) having a triangular contour.

Plastic heald according to claim 1, characterized in that the connecting strip (34) has an increasing thickness towards the shaft (23, 24).

Plastic heald according to claim 1, characterized in that the blind area (9) has contours fitted to each other.

Plastic heald according to claim 1, characterized in that the shafts (23, 24) have end lugs (8) on their ends.

Plastic heald according to claim 10, characterized in that a spacer (44) is provided on the end lugs (8).

15. Plastic heald according to claim 14, characterized in that the separation means (44) consists of at least one protrusion provided on at least one side of the heald (7).