CN103184610A

CN103184610A - Heald with yarn-friendly yarn eyelet

Info

Publication number: CN103184610A
Application number: CN2012105585332A
Authority: CN
Inventors: C·格特; R·格罗斯曼; M·古森科
Original assignee: Groz Beckert KG
Current assignee: Groz Beckert KG
Priority date: 2011-10-21
Filing date: 2012-10-19
Publication date: 2013-07-03
Anticipated expiration: 2032-10-19
Also published as: EP2584078A1; JP2013087410A; KR101997537B1; CN103184610B; TWI583837B; TW201333291A; KR20130044157A; JP6126767B2; EP2584078B1

Abstract

The invention relates to a heald (10) used for a heald frame (14). The heald (10) comprises a heald main body (11) which is preferably formed by plastic through injection molding. A yarn eyelet (15) of the heald (10) is provided with a wrap yarn (16) so as to move on a direction (F) of the wrap yarn. Observing on a longitudinal direction (L) of the heald main body (11), the yarn eyelet (15) is defined by two yarn supporting surfaces (25) which are disposed oppositely. The two yarn supporting surfaces (25) have the same design. Each yarn supporting surface (25) is provided with a first plane section (42) and a second plane section (43). Observing on a wrap yarn direction (F), angles of inclination [sigma] of the two plane sections (42,43) are constant and are preferably different. The angles of inclination are measured relative to a reference plane E. The reference plane E is horizontal-oriented when the heald (10) is at a using position. The plane sections (42,43) are connected in manners of non-step and non-edge through a central bending section (44). The central bending section (44) is convex when observed on a direction of yarn supporting surface (25).

Description

Heald with guide eye of the friendly type of yarn

Technical field

The present invention relates to a kind of heald of the heald frame for loom.Heald frame carries a large amount of healds, and wherein each heald all has guide eye, and warp thread is guided through guide eye when heald is in the use location.In operating process, the formation shed open thereby heald frame moves up and down in loom.Weft yarn moves in the shed open.Like this, warp thread and heald bear sizable stress.Yet big acceleration or the delay of heald may not cause to warp thread with to the excessive wear of heald or to their any infringement.

Background technology

Open source literature US5348055A has described a kind of heald that is made of web (web) shape metalwork.Guide eye is to form by opening is stamped in the metal web.Thus, two bridge-type parts that define guide eye and extend along the longitudinal direction of heald main body have been formed.Therefore for warp thread therefrom passes, the bending of bridge-type part goes out the plane of metal web, and presents distance distance each other walking crosswise in warp direction and walk crosswise in the direction of longitudinal direction.Consider this heald, formed seamed edge in the zone of guide eye, described seamed edge causes the heavy wear of warp thread potentially.Open source literature DE4336362C2 discloses similar heald.

Open source literature EP1739215B1 has described a kind of heald of plastics.Be flat and can end in the mode of rounding outside the heald main body at two the yarn seating surfaces that define guide eye on the longitudinal direction of yarn.Two bridge-type parts are at warp thread direction and walk crosswise the size that distance on the direction of warp thread defines the yarn seating surface with essentially rectangular profile.Therefore, heald is thick relatively on the zone of guide eye.

Another plastic heddle has been described among the open source literature EP1739215B1.Two yarn seating surfaces that define the heald main body in a longitudinal direction are configured to Bao Qiaozhuan, and roughly the same with the thickness of two bridge-type parts that define guide eye.The seating surface of warp thread is very little.

From the known other plastic heddle of open source literature CN2723472Y.Crooked warp thread seating surface is arranged between two bridge-type parts that define guide eye and extends at the longitudinal direction of heald main body.

Summary of the invention

Think that this is known systems, can find out to the objective of the invention is to produce the heald that reduces the warp thread wearing and tearing.

The heald of the feature of this target by presenting Patent right requirement 1 is realized.

According to the present invention, heald is included in the heald main body of extending at longitudinal direction between two stomidiums.The heald main body is provided with the guide eye of admitting warp thread.It is mobile at warp thread direction that warp thread passes guide eye.Warp thread direction is interpreted as and means: in the longitudinal direction observation of warp thread or when the yarn seating surface of association is observed, and the bearing of trend of warp thread in guide eye.Warp thread is changeed in the longitudinal direction skew of warp thread by heald.Entire length along warp thread is observed, and described warp thread extends along the warp thread surface that longitudinal direction and warp thread direction by the heald main body limit substantially.

Guide eye is defined by two yarn seating surfaces of heald main body, and described seating surface is arranged in a longitudinal direction mutually apart from a distance.Each yarn seating surface extends along first vertical side and second vertical side of heald main body.These two vertical sides are preferably designed so that adjoins guide eye and does not have step and/or seamed edge.Each yarn seating surface comprises first planar section and second planar section, and these two surface segment are connected to each other by the mode of central bend section with no step and no seamed edge.Therefore these two surface segment interconnect in the mode of not damaging yarn.These two planar section can be used for by the suitable inclination angle preassignment warp thread of respective surfaces section in the warp thread approaching side of guide eye and the inclination in warp thread receding side.Like this, when warp thread is seated on the corresponding yarn seating surface, can make the profile of yarn seating surface-when seeing from warp thread direction--be suitable for the open shed position of heald.Therefore, in the open shed position, the seating surface between warp thread and the heald is big, has therefore reduced the local stress of warp thread.The wearing and tearing of warp thread and the wearing and tearing of heald are reduced.

Advantageously, the curvature of central bend section on warp thread direction is steady state value.Therefore the profile of curved section is deferred at warp thread direction and is constant radius, and produces the cylinder cover section of cylinder as it should be.Curvature itself guarantees that the stress on the warp thread can be not excessive in guide eye.

Longitudinal direction in the heald main body is observed, and described heald main body comprises two bridge-type parts that limit guide eye, and described bridge-type part preferably has identical profile.In this exemplary embodiment, on each bridge-type part, be provided with the flat yarn spigot surface in the side towards the yarn seating surface.Especially, each yarn guide face is oriented so that its normal vector points to laterally with respect to warp thread direction and laterally with respect to the horizontal direction of longitudinal direction.Thus, the yarn guide face is along being extended by the plane of warp thread direction and longitudinal direction definition.The mode that is arranged to not damage yarn along the yarn guide face of warp thread direction orientation guides yarn to pass through guide eye.

In another preferred embodiment, the fore-and-aft distance of measuring at warp thread direction between two bridge-type parts is than meeting at right angles with respect to warp thread direction and the rectangular lateral separation of transversely measuring between two bridge-type parts is big at least five times with respect to longitudinal direction.Like this, the yarn seating surface in the zone between the bridge-type part is given enough big seating surfaces of warp thread at the longitudinal direction of described yarn, in order to further reduce any local stress on the warp thread.Heald is meeting at right angles with respect to warp thread direction and with respect to the meet at right angles thickness sum the most much 20% of described two bridge-type parts transversely of measuring of longitudinal direction in that the width at guide eye place is comparable.Therefore, heald is relative thin in the horizontal, this be why heald quantity can be very big on the heald axle.

In addition, advantageously, if each yarn seating surface has first transition zone of the bending on warp thread direction between first vertical side of heald main body and first planar section, and/or have at second vertical side of heald main body and second transition zone of the bending on warp thread direction between second planar section.Thus, between two sides and corresponding yarn seating surface of heald main body, the arc-shaped transition of no seamed edge is possible.The curvature of these two transition zones can be of different sizes.In preferred illustrative embodiment, to observe at warp thread direction, the curvature of first and/or second transition zone is steady state value.First transition zone and/or second transition zone do not have step particularly and do not have seamed edge, enter the flat surface sections of adjoining of yarn seating surface and enter vertical side of adjoining.

The end of adjoining described first transition zone of first side, and/or the end of adjoining described second transition zone of described second side preferably acutangulates with warp thread direction.Especially, first side and second lateral ends are being extended with the spaced same distance of the parallel mode that tilts with respect to warp thread direction.The end that is adjacent to transition zone of respective side connects two bridge-type parts of heald main body.

In a preferred embodiment, observe from longitudinal direction, first side and/or second side rotate around the axis that is parallel to longitudinal direction in the zone of adjacent guide eye at least, make the normal vector of win side and/or second side and the warp thread direction that adjoins corresponding yarn seating surface form acute angle.In its heald eye area, the heald main body of this embodiment is rotated around the axis that is parallel to the longitudinal direction extension, and then has formed the passage area that is used for warp thread between two bridge-type parts.

If advantageously: in the release position of the heald of association, the first surface section is adapted to the warp thread entering angle at the inclination angle of warp thread direction and/or the second surface section is adapted to the warp thread receding angle at the inclination angle of warp thread direction.The warp thread entering angle refers to as lower angle, that is: under this angle, the warp thread of guiding by guide eye with respect to move towards heald with the reference planes of extending that meet at right angles with respect to longitudinal direction.The warp thread receding angle refers to warp thread with respect to the angle of reference planes, and under this angle, warp thread moves towards selvedge from heald.In this design, the local stress on warp thread, therefore and the local stress on the yarn seating surface of heald very little, thereby minimum wear.Usually, the warp thread entering angle can have identical size with the warp thread receding angle.

Each bridge-type part has flat outer surface in the side with respect to described yarn guide face, and described flat outer surface preferably is parallel to described yarn guide in the face of accurate.Therefore flat outer surface can be parallel to warp thread direction and extend, and this is that the yarn that why moves between two adjacent healds can slide along outer surface.

In two ends on the longitudinal direction of being positioned at of heald main body, the heald main body has the stomidium zone, and wherein the stomidium of heald is arranged to for the heald supporting track is installed.In a preferred embodiment, two of the heald main body sides are designed to not have step or seamed edge at least outside these stomidium zones.Therefore, this has guaranteed that heald can slide along the warp thread that moves through described heald, and described heald can not tangled in these warp thread.

Preferably, heald is made of plastics and/or plastic base composite material, especially by casting technique for example injection molding make.Heald can be made one by adhesive material, and does not have seam and joint.Preferably, guide eye is directly defined by the heald main body.Heald main body plug-in unit for example heald rail can omit.

Description of drawings

Advantageous embodiments according to heald of the present invention can and obtain from specification from the dependent patent claim.Specification is subject to essential characteristic of the present invention and other situations.Accompanying drawing is in order to replenish reference.Below, the present invention is made an explanation with respect to accompanying drawing in conjunction with exemplary embodiment.Accompanying drawing is as follows:

The schematically showing in side view of Fig. 1 heald walked crosswise in the transverse observation of the longitudinal direction of warp thread direction and heald main body;

Fig. 2 warp thread passes the schematic diagram of perspective view form of the process of two example healds;

The diagrammatic side view of warp thread process among Fig. 3 such as Fig. 2;

The perspective diagram of the section of the exemplary embodiment of Fig. 4 heald, described section has guide eye;

Fig. 5 V-V Section line in Fig. 4, the cutaway view of the heald of Fig. 4;

The enlarged diagram of the guide eye of heald among Fig. 6 such as Fig. 4 and Fig. 5;

The schematic diagram of the yarn seating surface of the heald that Fig. 7 observes in a longitudinal direction; And

Fig. 8 shears the part schematic diagram by heald main body in the zone of yarn seating surface, and wherein, shear surface is along warp thread direction and longitudinal direction orientation.

The specific embodiment

The present invention relates to the heald 10 shown in Fig. 1.In the exemplary embodiment, heald 10 comprises heald main body 11, and it is made of plastics or plastic base composite material is made, for example by casting technique, for example injection molding.Heald main body 11 is extended at longitudinal direction L, and has the stomidium zone 12 that has stomidium 13 in each of two longitudinal end.Stomidium 13 is arranged to the heald supporting track in order to the respective associated that heald 10 is installed to heald frame 14.Heald main body 11 has the guide eye 15 that approximately is centered between described two stomidiums 13.On the use location of heald 10, warp thread 16 is guided through guide eye 15.When longitudinal direction L observed, the guide eye 15 that warp thread 16 passes heald 10 moved at warp thread direction F.

In order to form shed open, heald frame 14 on the use location of heald 10 along vertical direction--the longitudinal direction L corresponding to heald main body 11 moves.Like this, be guided through heald 10 guide eye 15 warp thread 16 upwards or biased downward leaving water plane.From the back rest 19, perhaps from offset staff, warp thread 16 extends and enters at warp inlet side 20 guide eye 15 of heald 10 towards the heald 10 of respective associated.In the open shed position, warp thread 16 with respect to the horizontal plane extends at the warp thread entering angle α that tilts towards guide eye 15 at warp inlet side 20.Withdraw from the side 21 at the warp thread relative with warp inlet side 20, warp thread 16 withdraws from opposite horizontal plane with the warp thread receding angle β from guide eye 15 and extends towards selvedge 22.Schematically shown in Figure 3, be in top shed or lower shed according to heald frame 14, warp thread entering angle α and warp thread receding angle β can vary in size, and for example can think that at top shed be the first value α 1, β 1, are the second value α 2, β 2 at lower shed.In addition, the size of warp thread entering angle α and warp thread receding angle β also depends on the position of heald frame between selvedge 22 and the back rest 19, and this is by shown in the heald frame 14 shown in dotted lines in Figure 3.Herein in the exemplary embodiment of Miao Shuing, warp thread entering angle α is less than warp thread receding angle β because heald frame 14 from the distance of the back rest 19 greater than the distance of heald frame 14 from selvedge 22.

Outside at least two stomidium zone 12, heald main body 11 has the outer surface that does not have seamed edge (edge) or step fully.Therefore, guarantee that the warp thread 16 of another heald frame 14 of passing can slide along heald 10 in yarn close friend's (not damaging yarn) mode between two adjacent healds 10, and can not stumbled.Reduce the risk of excessive wear or the yarn fracture of warp thread 16 thus.Be plotted in lines on the heald main body 11 among Fig. 4 only in order to illustrate the profile of heald main body 11, do not represent the edge.

In order to pick up (pick up) warp thread 16 in yarn close friend's mode, guide eye 15 has special design.On longitudinal direction L, guide eye 15 is defined by two yarn seating surfaces 25 that are oppositely arranged.When the heald frame 14 that supports heald 10 during at top shed or lower shed, guiding is passed the warp thread 16 of guide eye 15 by a support in described two yarn seating surfaces 25.

Meeting at right angles with respect to warp thread direction F and with respect to longitudinal direction L on the rectangular horizontal Q, guide eye 15 is delimited by two the bridge-type parts (bridge) 26 that are arranged to be in each other a distance.Its with side that the warp thread 16 that is moved through guide eye is associated on, each bridge-type part 26 has the yarn guide face 27 of flat.The yarn guide face 27 of bridge-type part 26 extends on the plane that is limited by warp thread direction F and longitudinal direction L.The normal vector NF of yarn guide face 27 points to horizontal Q.The yarn guide face 27 of bridge-type part 26 connects two yarn seating surfaces 25 of heald main body 11.Such result is, formed guide eye 15, and described guide eye peripherally defines by described two yarn seating surfaces 25 with by described two the yarn guide faces 27 on the bridge-type part 26.

Each bridge-type part 26 has flat outer surface 28 in contrast to yarn guide face 27 at its face on the side of guide eye 15.Outer surface 28 is parallel to yarn guide face 27 and extends.The thickness of bridge-type part 26 on horizontal Q records between yarn guide face 27 and outer surface 28 and between 0.4 and 0.5 millimeter.The outer surface 28 of bridge-type part 26 is parts of the outer surface of heald main body 11, and can't help step or seamed edge and define.

Two longitudinal edges that roughly point to warp thread direction F 29 of each bridge-type part 26 connect yarn guide face 27 and outer surface 28.They are crooked or arc, make yarn guide face 27 and outer surface 28 two longitudinal edges 29 by bridge-type part 26 interconnect with no step or the mode of not having a seamed edge.In an embodiment, two longitudinal edges 29 facing each other of two of heald main body 11 bridge-type parts 26 have fixing radius on warp thread direction F, as institute in Fig. 5 obviously.Longitudinal edge 29 away from the bridge-type part 26 of guide eye 15 orientations can have a plurality of radiuses and/or flat section.

Have distance B L between two bridge-type parts 26, define guide eye 15, described distance is corresponding to the inner width of last two the bridge-type parts 26 of warp thread direction F.Lateral separation DQ on the horizontal direction Q between two bridge-type parts 26, as recording between two flat yarn guide faces 27 in example, described lateral separation DQ is corresponding to the inner width between two bridge-type parts 26 on horizontal Q direction.At least 5 times of fore-and-aft distance DL and more specifically 5 to 7 times to lateral separation DQ.For example, lateral separation DQ can be 0.15 to 0.2mm.Fore-and-aft distance DL for example can be that 1mm is to 1.5mm.The distance that the width B of heald main body 11 in the zone of guide eye 15 measured on horizontal Q by the outer surface 28 of bridge-type part 26 is described.In the exemplary embodiment that herein illustrates, width B can be 1.0 to 1.5mm.Heald main body 11 the width B at guide eye 15 places can be for example than the thickness d of two bridge-type parts 26 and greatly at the most 10%.

Yarn seating surface 25 is divided into a plurality of zones.Zones of different is illustrated among Fig. 7 and Fig. 8.Each yarn seating surface 25 extends between first side 33 of heald main body 11 and second side 34.These two

sides

33,34 are arranged on the flat sides of heald main body 11, its deviate from mutually and on the longitudinal edge 35 of heald main body 11 with the mutual transition of the mode that does not have step and seamed edge.These two

sides

33,34 are set to be parallel to each other usually.The normal vector NA of the normal vector NA of first side 33 and second side 34 ends at stomidium zone 12 separately towards horizontal Q.Adjoin in guide eye 15, these two sides 33, the 34 face M of the longitudinal center rotations with respect to heald main body 11, described median plane meets at right angles with respect to horizontal Q, makes to adjoin two sides 33 in

guide eye

15,34 normal vector NA with respect to horizontal Q and to be incline direction with respect to warp thread direction F to extend.Normal vector NA becomes anglec of rotation γ with respect to horizontal Z, for example, the angle ranging from 15 to 20 degree.Such two bridge-type parts 26 are set to respect to the face M of longitudinal center of heald main body 11 at ipsilateral upper offset not, and lateral separation DQ is formed between these two bridge-type parts 26 thus.

Because this orientation of

side

33,34 on the zone of guide eye 15 of heald main body 11, adjoin in the end 33a of first side 33 of yarn seating surface 28 or adjoin in the end 34a of second side 34 of yarn seating surface 25, extending with the anglec of rotation γ with respect to warp thread direction F, and therefore tilting and therefore also tilt with respect to horizontal Q with respect to warp thread direction F.

Adjoin between two

sides

33,34 of heald main body 11 of guide eye 15 two sides 33, the distance B S of the orientation measurement of 34 normal vector NA is greater than the thickness d of a bridge-type part 26.In the exemplary embodiment, this distance B S between the

side

33,34 is almost corresponding to the diagonal-size of bridge-type part 26.Distance B S between the

side

33,34 is less than the fore-and-aft distance DL between the bridge-type part 26.

Yarn seating surface 25 extends between the end 34a of the end 33a of first side 33 and second side 34.Described yarn seating surface comprises first transition zone 40 that adjoins first side 33 and second transition zone 41 that adjoins second side 34.Two

transition zones

40,41 are curve-like.In the present embodiment,

transition zone

40,41 curvature are constants at warp thread direction F.As shown in Figure 8, heald main body 11 is cut open in the plane in the zone of yarn seating surface 25, and described plane parallel is extended in the longitudinal median plane M of heald main body 11.The plane of cutting thus, limits by warp thread direction F with by longitudinal direction L.This plane of cutting tilts to extend with respect to first side 33 of adjoining yarn seating surface 25 and second side 34.In the plane that this is cut, described two

transition zones

40,41 have curved profile, similar circular arc for example, and wherein the circular arc of the circular arc of first transition zone 40 with radius r 1, the second transition zone 41 has radius r 2.Two radius r 1, r2 can be identical size or different sizes.

Described

transition zone

40,41 profile are limited to the yarn guide zone A of guide eye 15.Yarn guide zone A should be understood to mean the zone of guide eye 15, and wherein transversely Q is mobile between bridge-type part 26 for warp thread 16.According to example, yarn guide zone A defines (Fig. 7) by two planes that two yarn guide faces 27 by bridge-type part 26 limit.In preferred illustrative embodiment, be limited to yarn guide zone A in the shape of the yarn seating surface of describing before and afterwards 25 and section thereof.The outside of this yarn guide zone A, yarn seating surface 25 has plane and/or convex shape, and it does not have step or seamed edge, and especially, it can deviate from the shape that limits at yarn guide zone A.Depression on the yarn seating surface 25 is able to avoid this yarn guide zone the inside and outside of A.

In the embodiment that revises, one curvature in described two

transition zones

40,41 can be inconstant on warp thread direction F.

In addition, yarn seating surface 25 has first planar section 42 and second planar section 43.These two

planar section

42,43 are extended on different planes.With inclination angle δ 1 extension approximately, extend with the right angle with respect to longitudinal direction F by described reference planes with respect to reference planes E for first planar section 42.The first inclination angle δ 1 is constant on warp thread direction F.Second planar section 43 is with respect to reference planes E about second inclination angle δ 2 that tilts.The second inclination angle δ 2 is constant on warp thread direction F.The first inclination angle δ 1 is corresponding to warp thread entering angle α, and the second inclination angle δ 2 is corresponding to warp thread receding angle β.When heald 10 was in the open shed position in heald frame 14, warp thread supported and to face described two

planar section

42,43 and be not subjected to stress by two

transition zones

40,41 especially.Opposite with

transition zone

40,41 curved surface, warp thread 16 tangentially extends in the direction of

respective planes section

42 or 43, makes described warp thread extend across

transition zone

40,41 and at first form with

planar section

42,43 and to contact.

Have central bend section 44 between two

planar section

42,43, described curved section 44 is connected this two

planar section

42,43 in the mode of no step and no seamed edge.In an exemplary embodiment, curved section 44 has constant profile at warp thread direction F.In the sectional view among Fig. 8, along warp thread direction F, therefore the profile of curved section 44 is formed by the circular arc with the 3rd radius r 3.In the exemplary embodiment, outside the central plane X that is centered close to first side 33 and second side 34 of the circular arc of curved section 44.

Therefore, the profile of yarn seating surface 25 is asymmetric with respect to the central plane X between two sides 33,34.Yet in variant embodiment, this profile also can be with respect to this central plane X symmetry.

On the whole, yarn seating surface 25 is designed to not have step and seamed edge.When warp thread direction F observed, described plane showed constant inclination or constant curvature at each section, wherein, formed the tangent line transition respectively.According to the present invention, the contour shape of yarn seating surface is (prespecified) that predesignates and therefore tilts with respect to the side 33 of heald

main body

11,34 normal vector NA on warp thread direction F, and yarn seating surface 25 is adjoined in described side.

The inclination of described yarn seating surface 25 or curvature and

section

40,41,42,43,44 thereof are arranged on A place, yarn guide zone at least as described, and therefore can depart from outside the A of yarn guide zone from it.

The present invention relates to a kind of heald 10 for heald frame 14.Heald 10 comprises heald main body 11, and it preferably is made of plastics by injection molding.The guide eye 15 of heald 10 is arranged to for warp 16 to move at warp thread direction F.Longitudinal direction L in heald main body 11 observes, and guide eye 15 is defined by two yarn seating surfaces 25 that are oppositely arranged.These two yarn seating surfaces 25 have identical design.Each yarn seating surface 25 has first planar section 42 and second planar section 43.F observes at warp thread direction, and these two

planar section

42,43 inclination angle δ are constant, and are preferably different sizes.Inclination angle δ measures with respect to reference planes E, and this plane of reference E is oriented in horizontal direction when heald is in its use location.These two

planar section

42,43 interconnect with no step and the mode of not having a seamed edge by the central bend section 44 got involved, and this central bend section 44 has the convex formula when the direction observation of yarn seating surface 25.

List of reference signs

10 healds

11 heald main bodys

12 stomidium zones

13 stomidiums

14 heald frames

15 guide eyes

16 warp thread

19 back rest

20 warp thread approaching sides

21 warp thread receding sides

22 selvedges

25 yarn seating surfaces

26 bridge-type parts

27 yarn guide faces

28 outer surfaces

The longitudinal edge of 29 filling members

33 first sides

33a first lateral ends

34 second sides

34a second lateral ends

The longitudinal edge of 35 heald main bodys

40 first transition zones

41 second transition zones

42 first planar section

43 second planar section

44 curved section

α warp thread entering angle

First value of α 1 warp thread entering angle

Second value of α 2 warp thread entering angles

β warp thread receding angle

First value of β 1 warp thread receding angle

Second value of β 2 warp thread receding angles

The γ anglec of rotation

δ 1 first inclination angle

δ 2 second inclinations angle

The width of B heald main body

The thickness of d bridge-type part

The DL fore-and-aft distance

The DQ lateral separation

Distance between the DS side

The E reference planes

The F warp thread direction

The L longitudinal direction

The M longitudinal median plane

The normal vector of NA side

Normal vector r1 first radius on NF yarn guide plane

R2 second radius

R3 the 3rd radius

Q is horizontal

The X central plane

Claims

1. heald (10) that is used for heald frame (14) has:

Extend and have the heald main body (11) of guide eye (15) at longitudinal direction (L), described guide eye (15) is arranged to admit warp thread (16), and it is mobile at warp thread direction (F) that described warp thread passes described guide eye (15);

Wherein, described guide eye (15) by on described heald main body (11) along the longitudinal direction (L) define the extension between first side (33) of described heald main body (11) and second side (34) of described yarn seating surface each other apart from two yarn seating surfaces (25) that a distance exists;

And wherein, each yarn seating surface (25) has first planar section (42) and second planar section (43), and described first planar section (42) and second planar section (43) are connected to each other with no step and no seamed edge mode by curved section (44).

2. heald as claimed in claim 1 (10), it is characterized in that: the curvature (1/r3) of described central bend section (44) is constant at warp thread direction.

3. heald as claimed in claim 1 or 2 (10), it is characterized in that: described guide eye (15) is defined by two bridge-type parts (26) that the longitudinal direction (L) in described heald main body (11) extends extraly, and each of described bridge-type part (26) has flat yarn guide face (27).

4. heald as claimed in claim 3 (10) is characterized in that: the normal vector (NF) of described yarn guide face (27) is laterally with respect to described warp thread direction (F) and laterally with respect to horizontal direction (Q) orientation of described longitudinal direction (L).

5. as claim 3 or 4 described healds (10), it is characterized in that: the fore-and-aft distance (DL) of described two bridge-type parts (26) of measuring at warp thread direction is bigger at least five times than the lateral separation (DQ) at described two bridge-type parts (26) of horizontal direction (Q) measurement, and described horizontal direction (Q) meets at right angles with respect to described warp thread direction (F) and with respect to described longitudinal direction (L).

6. as the described heald (10) in the claim 2 to 5, it is characterized in that: the width (B) on described guide eye (15) of described heald (10) is than with respect to described warp thread direction (F) and with respect to the thickness sum the most much 20% of described two bridge-type parts (26) of the rectangular horizontal direction of described longitudinal direction (L) (Q) measurement.

7. the described heald (10) in the claim as described above, it is characterized in that: each yarn seating surface (25) has: first transitional surface (40) between described first side (33) and first surface section (42), the described first yarn seating surface is in warp thread direction (F) bending, and/or second transition zone (41) between second side (34) and second surface section (43), the described second yarn seating surface is in warp thread direction (F) bending.

8. heald as claimed in claim 7 (10), it is characterized in that: the end (33a) of adjoining described first transition zone (40) of described first side (33), and/or the end (34a) of adjoining described second transition zone (41) of described second side (34), (F) acutangulates with warp thread direction.

9. as claim 7 or 8 described healds (10), it is characterized in that: the curvature (1/r1) of described first transition zone (40) and/or the curvature (1/r2) of described second transition zone (41) are constant along described warp thread direction (F) in yarn guide zone (A) at least, in described yarn guide zone (A), transversely direction (Q) is mobile between can the bridge-type part (26) in guide eye (15) for warp thread (16).

10. the described heald (10) in the claim as described above is characterized in that: adjoin first side (33) of corresponding yarn seating surface (25) and/or the normal vector (NA) of second side (34) and form acute angle with described warp thread direction (F).

11. the described heald (10) in the claim as described above, it is characterized in that: in the open shed position of the heald frame (14) of association, the inclination angle of described first surface section (42) (δ 1) is adapted to warp thread entering angle (α), and/or the inclination angle of second surface section (43) (δ 2) are adapted to warp thread receding angle (β).

12. the described heald (10) in the claim as described above, it is characterized in that: each bridge-type part (26) has flat outer surface (28) in the side with respect to described yarn guide face (27), and described flat outer surface is parallel to described yarn guide face (27) orientation.

13. the described heald (10) in the claim as described above, it is characterized in that: first side (33) and/or second side (34) stomidium zone (12) at least are designed to do not have step and seamed edge in addition.

14. the described heald (10) in the claim as described above, it is characterized in that: described guide eye (15) is directly defined by described heald main body (11).

15. the described heald (10) in the claim as described above, it is characterized in that: it is the heald that is made of plastics.