CN1702218A

CN1702218A - Warp-knitting implement mounting bar

Info

Publication number: CN1702218A
Application number: CNA2005100739334A
Authority: CN
Inventors: K·米斯塔
Original assignee: Karl Mayer Textilmaschinenfabrik GmbH
Current assignee: Karl Mayer R&D GmbH
Priority date: 2004-05-27
Filing date: 2005-05-27
Publication date: 2005-11-30
Anticipated expiration: 2025-05-27
Also published as: JP2005336700A; EP1600543A1; KR20060048118A; TWI294930B; US20060010924A1; DE502004006772D1; ES2303001T3; CN100410437C; TW200606294A; EP1600543B1; KR100685457B1

Abstract

This invention provides tool bars having slight masses and high mechanical stability. The knitting tool bars having main bodies which are formed from a fiber-reinforced plastic and in which cavities 12 extended in the longitudinal direction are surrounded with walls is characterized in that the main bodies each is assembled from at least two opening members 10, 11; 10', 11'; 32, 33; 45, 46; 57, 58, 63.

Description

Warp-knitting implement mounting bar

Technical field

The present invention relates to a kind of knitting machine, have a warp-knitting implement mounting bar with the housing of fibre reinforced plastics, described housing surrounds a cavity with wall, this cavity extends along the longitudinal direction.

Background technology

Knitting machine has a plurality of sley bars that carry circle forming.For simplicity, all are participated in the braiding processes element-for example knitting needle, eye needle guide, warp loom sley bar, pile raising sinker, knocking-over sinker etc. all are referred to as " circle forming ".

A sley bar can extend on a bigger length, for example extends on the whole length of a knitting machine.It can reach about six meters length on the order of magnitude under individual cases.Even also the mechanical stability to sley bar proposes some requirement when shorter length.Particularly sley bar should have certain rigidity, should not vibrate.The quality of wishing sley bar on the other hand is as much as possible little, because it must be accelerated at each circulation time of knitting machine.Therefore quality is more little, and it is just little to be used to quicken required power, and the operating rate of knitting machine is also just high.

Usually the sley bar of knitting machine by light metal make, for example magnesium or aluminium.Though these materials are low weight, the sley bar of being made by these materials has considerable quality still.Therefore for example in DE38 40 531C1, advise making sley bar with a kind of plastics of reinforcement.For this reason, described sley bar has a hollow profile that has a cavity, and the outer wall that is sealed to a great extent around this cavity limits.The outside forms two fixedly section bars on hollow profile, support arm or pin base are used to be fixedly clamped.

Though owing to had such structure to make sley bar have smaller quality and than higher mechanical bearing capacity, yet this bearing capacity is limited.

Suggestion is made a kind of sley bar with reinforced plastics in DE41 11 108C2, wherein hollow profile by the plane overlappingly the band of upper and lower settings make, and this band is made with reinforcing fibre plastics that weave or woven pad by having one respectively.A molding is set in this cavity, and this molding is retained in the cavity for a long time, and comprises that nut thread spare is in order to fixed component.

Yet this structure has its shortcoming, promptly because molding has increased quality again.Must compare accurate in locating to nut thread spare in advance in addition.Change this position in fact no longer may afterwards.

Summary of the invention

Task of the present invention provides the sley bar that a kind of quality is little and mechanical stability is high.

Start at this paper that this task is to finish by following measure in the sley bar of described type, promptly described housing is made up of the section bar of two openings at least.

The section bar of opening is a kind of section bar that all can contact from all sides.Just as long as section bar has been produced described housing once assembling.Also just just produce cavity in this case.The result who does like this is, from all sides, also can freely contact these section bars from their medial surface, like this, just can implement many processing measures before these section bars of assembling before assembling.So just can for example save pure because nut thread spare must consider to be provided with the position in advance, and these positions not need later on.If directly as hollow profile processing, for example employing extruding, then also unnecessary material sections need be set on housing to housing, this may former having to for it.

At least one section bar is formed as extrusion.Can find that " intensity " of sley bar is along with the increase in order to the strength of pushing a section bar improves in certain boundary.If now use the section bar assemble case, yet at least one section bar preferably can be produced by following measure all section bars in high-intensity mode, promptly once produced these section bars in the extruding.Once can control desired pressure in the extruding, and exert pressure like that as requested.In the housing of a hollow profile with a kind of sealing, this can only just can reach by following measure, promptly adopts an iron core.But when housing is longer especially the difficulty be that iron core is removed again.Replacement scheme is to allow iron core still be retained in (DE41 11 108C2) in the housing.Yet this way can cause the increase of quality.

Preferably make described section bar have the connection plane that at least one wherein makes the section bar plane earth be close to.On these connection planes, bigger contact surface can be provided, connection enough and reliably between two or more section bars can be implemented in by these contact surfaces.

Wherein preferred way is that described section bar is pasted each other.Even by when using the adhesive of low final strength, also producing very high bed knife in the lip-deep large-area stickup of connection.

In cavity at least one section bar be provided with one fixedly auxiliary element also be favourable.Fixedly auxiliary element can be fixed on the section bar before the section bar assembling.Just be not when making this section bar, just to need to consider this fixedly auxiliary element.Fixedly auxiliary element can be arranged on the place, inboard that limits inner chamber subsequently of section bar, and if this inboard also can freely contact, this element can be installed so and it will be fixed on the there.

Wherein preferably fixedly auxiliary element be arranged on wherein in the position that two section bars overlap each other.This scheme has a plurality of advantages.On the one hand therein two section bars the intensity of the position middle shell of overlapping setting is big especially up and down; Not only fixing auxiliary element can be used on the other hand with some members, for example pin base or similarly member be fixed on sley bar, also can be simultaneously fixing auxiliary element be used to guarantee or strengthen two connections between the section bar.

Fixedly auxiliary element preferably sticks.This measure is mainly meaningful to making sley bar.If fixedly auxiliary element is fixed on the inboard of section bar, even then it also keeps its position when mounted.For example can be with a nut as being somebody's turn to do fixedly auxiliary element.This nut has provided screw thread, a bolt can be screwed in this screw thread subsequently.Certainly must pass described section bar in this case and make a hole.

The outside that section bar is preferably in it has the groove that extends transverse to longitudinal direction, is provided with the lath of waveform between these grooves.These grooves are used to hold pin, for example knitting needle.These laths support knitting needle along the longitudinal direction mutually, and limit the distance between the adjacent knitting needle.Extend because these laths are waveform, thereby improved intensity.Because described section bar is made by fibre reinforced plastics, for example carbon fibre reinforced plastic, so only have one " mountain "-can be basically so that at least a portion of fiber can be directed in that part of the section bar that groove wherein also is not deep into by waveform-this waveform.These laths have improved the resistivity to damaging.

A common cannelure that extends along the longitudinal direction is connected with described groove.Described cannelure is arranged in the additional section bars, and this additional section bars is arranged on the side outside the cavity of being positioned at of a section bar.This cannelure is used for for example holding the protuberance of knitting needle, and knitting needle is fixed on the opposite of knitting needle sley bar along the longitudinal direction with these protuberances.Because cannelure does not enter into the section bar that surrounds cavity, so avoided weakening to housing.So it is stable especially that sley bar keeps, and can also finish its needle support even so well, for example be the function of knitting needle at this.

At least one section bar is preferably made by a kind of prepreg (Prepreg).Prepreg is the semi-finished product that a kind of wherein fiber, for example carbon fiber and plastics mix to scale.Wherein these fibers methods according to the rules are arranged on plastics inner.Plastics form a kind of matrix, and this matrix is strengthened by fiber.Prepreg for example exists with the form of pad, and it can be put into forcing press and suppress.Compare with in pressing process, adding plastics, can obtain fiber usually by a prepreg and in plastic matrix, better distribute.After pressing process-and in this process, also imported heat usually, can carry out cure process to prepreg, keep its net shape then.The unwanted ledge of prepreg can be dismissed in compacting or after compacting, perhaps amputates or blocks in a process of separating.

Prepreg is formed as the UD-prepreg.(UD is unidirectional) fiber in fact only extends in one direction in the UD-prepreg.The tensile strength of the section bar that is made of prepreg on this direction is improved.Therefore, by selecting machine direction can apply very big influence to the intensity of sley bar.

Section bar is made of at least two prepregs that are provided with that overlap each other, and their machine direction surrounds a predetermined angle.This angle for example can be 90 °.Tensile strength in all directions of reality and impact resistance intensity are all strengthened in this case.

At least one prepreg preferably has a machine direction of extending along the longitudinal direction, and at least one prepreg has a machine direction transverse to the longitudinal direction extension.Mainly be that such scheme is favourable in the sley bar of supporting sley bar pin.Such sley bar both can move back and forth along the longitudinal direction in a circulation, also can move transverse to longitudinal direction.The fiber of prepreg all has enough intensity at this both direction.By prepreg is aimed at targetedly, make sley bar on all directions, keep dimensionally stable, in other words, be the change in size relevant can not occur in a longitudinal direction or on temperature transverse to the direction of longitudinal direction.

Advantageously, a machine direction with transverse to the longitudinal direction extension is set at least on an outer surface of described section bar.This is favourable for the above-mentioned groove of mentioning with the knitting needle sley bar relevantly especially, because those therebetween laths have the fiber identical with the direction of lath on their surface with on the layer that is positioned under it at least thereafter.Like this, the intensity of lath is improved greatly.

Housing preferably has the fibre composition higher than prepreg.This can produce by following measure, promptly applies a kind of extruding force when making at least one section bar.This extruding force is used for the part of plastics is extruded from extruder.This can simplify by following measure, is about to a prepreg of preparing for extruding and is wrapping in the textile material.By this measure, plastics are directed on the surface of prepreg quickly, and are directed to its edge through this surface.If for example prepreg has 60% fibre composition, is the housing with 70% fibre composition by what obtain after the higher extruding force so.

At least one section bar preferably has an arch portion section.Compare with a planar portions section, an arch portion section has higher intensity.An available extrusion process is produced the arch portion section.

Favourable also is, at least one section bar have a bending and away from the reinforcing lath of cavity.This reinforces lath, and certain position that provides in the knitting machine can easily be provided.This is reinforced lath and also can be used for simplifying the location of sley bar in knitting machine.Such reinforcing lath can easily produce in the forming process in extruder.

Stipulate that in a preferred scheme these section bars have a kind of shape, only just can be close to setting each other in unique back of once aiming at these section bars of this shape.These section bars just carry out so-calledly to the center so, and in other words, they are coupling mutually just in alignment procedures only.A kind of like this shape for example can reach by following measure, and promptly these section bars are provided with rounding or the projection that matches each other.

Description of drawings

The present invention will be described by preferred embodiment and connection with figures below.These accompanying drawings are:

Fig. 1: the woven extent sketch of a warp knitting machine,

Fig. 2: make a kind of sketch of a kind of pressing mold of opening section bar,

Fig. 3: the section bar of a sley bar,

Fig. 4: a sley bar that is assembled into by two section bars,

Fig. 5 a: a needle stand,

Fig. 5 b: one of Fig. 5 a is amplified the cross section,

Fig. 6 a: the perspective view of a needle stand,

Fig. 6 b: according to the enlarged drawing of the part of the needle stand of Fig. 6 a.

The specific embodiment

Fig. 1 represents a plurality of circle formings of a knitting machine, just sley bar 1a-1d, sinker bar 2,3 one needle stands 4 of slide bar.Sley bar 1a-1d supports sley point 5, and sley point 5 is fixed on the sley bar 1a-1d by a support 6 that also can be called the pin base.Sinker bar 2 supporting pusher jacks 7.Slide bar 3 supporting plates 8, needle stand 4 supporting knitting needles 9.

Sley bar 1a has a housing of being made up of two section bars 10,11.These two

section bars

10,11 surround a cavity 12.This cavity extends perpendicular to the pattern plane.Following handle is called " longitudinal direction " perpendicular to the direction on pattern plane, because the longitudinal direction of it and knitting machine is consistent.The knitting areas of knitting machine is shown in Figure 1.

Fig. 2 represents a pressing mold 13 that is used to produce section bar 11.This pressing mold has a upper member 14 and a lower member 15, and some dislocation ground expression of these two members in Fig. 2 is in order to expressing section bar 11.

Section bar 11 by at least two, preferably form by three UD prepregs.The fiber of this prepreg extends along the longitudinal direction or transverse to longitudinal direction.In order to produce section bar 11, overlapped placement and true-to-size UD-prepreg are inserted in the pressing mold 13.Make upper member 14 and lower member 15 relative motions with a kind of predetermined pressure, section bar 11 is shaped.Also can introduce heat if necessary.After the prepreg sclerosis, just obtained the section bar 11 of desired shape.Unnecessary marginal portion 16,17 can be with amputating or stamping-out falls.

Section bar 11 (this section bar also is applicable to all other section bars) forms as the opening section bar, that is to say that the both sides of section bar 11 all can contact.

Fig. 3 represents that has the fixedly section bar 11 of auxiliary element 20 of

punching hole

18,19 and.Fixedly auxiliary element 20 sticks on the lath 21, and this lath 21 has a joint face 22 in its outside, for example by pasting section bar 11 and section bar 10 is coupled together with this joint face.Fixedly auxiliary element 20 has a screwed hole 23 respectively for each hole 19, a bolt can be screwed in this screwed hole 23 for sley bar 1a being fixed on the folding bar (Legehebel) (or another support) that is not shown specifically later.

The screw member 24 that a bolt 25 can be screwed into is set in a similar fashion, so that the support 6 of sley point 5 is fixed on the sley bar 1a in hole 18.

The structure of another section bar 10 is identical with section bar 11 on principle.This section bar has a lath 26 in its upper end, this lath is provided with a hole 27.Reinforcing lath 28 ground that this lath has a bending point to, and this lath for example surrounds one 90 ° angle with lath 26.Reinforce lath 28 away from cavity 12.This reinforcing lath gives sley bar 1a in the bigger rigidity of longitudinal direction, but it and have no relations because it is adjacent with bolt when installment state, and this bolt is by screwed hole 23 guiding.

Sley bar 1d even so form, i.e. two section bar 10 ', 11 ' designs are identical, that is to say, can use identical section bar 10 ', 11 ', and 180 ° of upsets, to form sley bar 1d.But in a knitting machine, use identical sley bar usually.

Section bar 11 has a convex shoulder 29 with lath 21 opposed sides, and this convex shoulder is also formed a joint face 30.The corresponding convex shoulder 31 of (Fig. 1 and 4) convex shoulder 29 and section bar 10 adjoins mutually when installment state.

In order to make sley bar 1d, in pressing mold 13, make two section bars 10,11.Equally for example come

manufacturing hole

18,19 by boring or punching.Then these two

section bars

10,11 are assembled, and on

joint face

22,30, be connected to each other.This connection for example can be finished by stickup.Because be that large tracts of land is carried out bondingly on the whole length of sley bar,, still reach very high adhesive force even so so can use adhesive with less final strength.Additionally the

lath

21,26 of overlapping setting or convex

shoulder

29,31 also can be used for the bolt connection of knitting elements, perhaps are used for the fixing of sley bar.Pastes described in connecting in corresponding bolts and to have little significance, so can abandon it where necessary.

Sinker bar 2 also has two section bars 32,33, and they surround a cavity 34.Section bar 32,33 is close to each other in portion's section 35,36 or 37,38 places, and can be connected to each other together there.A bolt 39 is by portion's section 35,36 guiding, and this bolt is screwed in the nut 40, and nut 40 is for example by being pasted and fixed on the inboard of portion's section 35.Bolt 39 not only is fixed on sinker bar 2 one and supports on 41, and it has also guaranteed the connection between described two section bars 32,33.

A screw member 42 is also similarly by portion's section 37,38 guiding in sley bar 1a-1d.Bolt 43 is screwed in the screw member.Bolt is supporting pusher jack 7 on the one hand, is also connecting described two section bars 32,33 on the other hand.

At this, portion's section 36 also has one and reinforces lath 44.This lath and portion's section 36 approximately form a right angle, and therefore away from cavity 34.

Slide bar 3 also is made up of two section bars 45,46, and these two section bars surround a cavity 47.At this, these two section bars 45,46 have one respectively and reinforce lath 48,49, and wherein these two section bars 45,46 plane earth on reinforcing lath 48,49 is close to each other.It is crooked with respect to portion's section 50 of lower sectional material 46 ground that approximately meets at right angles to reinforce lath 48.Nut 51 sticks on the inboard of section bar 46.

Section bar 45 has portion's section 52,53 of two bendings.Crooked portion's section has improved the rigidity of section bar at longitudinal direction.Section bar 46 also has portion's section 54 of a bending, and wherein Wan Qu portion's section 53,54 is close to each other.Two section bars 45,46 can be pasted each other there.

The other end on the connection surface that forms on bent section 53,54, described two section bars 45,46 form clamp arm 55,56.Its support of slide plate 8 usefulness is clamped between this clamp arm.Certainly the also available screw of slide plate 8 is reinforced.

The needle stand 4 that Fig. 5 and 6 expressions have other individual components.At first this needle stand has two section bars 57,58.These two section bars are connected to each other at their reinforcing lath 59,60 places that the turning is arranged.A nut 61 sticks on the inboard of section bar 57.This nut can contact by hole 62, and like this, needle stand 4 just can be fixed on the support that is not shown specifically.

Be provided with another section bar 63 on the outside of section bar 58, this section bar amplifies expression in Fig. 5 b.Section bar 63 forms a cannelure 64, and a projection 65 of every pin 9 is embedded in this cannelure, in order that by slide plate along direction of motion locking pin 9.

Can see that from Fig. 5 b all three section bars 57,58,63 all are to constitute by three layers.These layers are used " 1 ", " 2 " and " 3 " expression.Every layer by a prepreg, just semi-finished product constitute, and wherein fiber, particularly carbon fiber embed in the plastic matrix.In this case, these prepregs are designed to UD-prepreg (unidirectional prepreg), that is to say, those fibers are all aimed at a direction.A plurality of during fabrication prepregs, be three in this case and be provided with overlappingly, in a press mold, press together each other as illustrated in fig. 2 then with similar.Wherein its fiber has the overlapping setting of prepreg of different orientation.Each outer 58-1 and 58-3 and 63-1 and 63-3 so aim at, i.e. their fiber and pattern plane parallel, and just (when the undeformed state of prepreg) is parallel with the direction of knitting needle 9.Prepreg 58-2 and prepreg 63-2 so aim in contrast, and promptly their fiber is positioned at longitudinal direction.

The prepreg that also is suitable for layer 57-1 to 57-3 similarly.

When forming profiles in a corresponding forming press 58,63 o'clock as what in Fig. 6 b, seen, these section bars form a waveform 66.Fiber at this waveform middle level 63-3 is parallel with knitting needle 9 in a plane.Not only mill out cannelure 64 after section bar 63 is shaped, wherein this cannelure 64 only passes the two-layer 63-1 of top, 63-2, and produce groove 67, in this groove, knitting needle 9 can be set later on.Yu Xia lath 68 is fibroplastic by outer 63-3 then.These fibers are from " bottom ", and slip into " bottom " again, and like this, the skin of waveform 66 is actually by coherent fibre structure and forms, and wherein with the end grappling of fiber, cannot not that is to say freely.This stability to waveform 66 has very big contribution.Similarly consideration also is applicable to lath 68.Its fiber at least at a side bearing in bottom.

Knitting needle 9 supports 69 by one and is bearing in the groove 67.This support 69 is fixed on the needle stand 4 by a securing member 70, and wherein securing member 70 is fixed on the needle stand 4 by a bolt 71.This bolt is screwed in the screw element 72.This screw element passes described two section bars 58,63.In addition, section bar 57,58,63rd in this embodiment, are bonded to each other.

Make

section bar

10,11,32,33,45,46,57,58, the UD-prepreg had been presented to respectively among the custom-designed pressing mold in 63 o'clock, then this pressing mold is being exerted pressure, also improving temperature in case of necessity.Highland selection pressure like this wherein, promptly a part of plastics of plastic matrix are extruded from pressing mold.Obtain such section bar by this measure, wherein fibre composition is than the fibre composition height of prepreg.Intensity by the made sley bar of these section bars has improved like this, afterwards.Yet do not allow from section bar, to remove too many plastics.Can also simplify extruding of plastics by following measure, be about to these prepregs and be wrapped in a kind of textile material, by this material plastics be discharged then.

After through compacting, each independent section bar also can be processed.For example can be according to length sawed-off or cut-out accurately with them.Also the projection parallel with longitudinal direction can be cut away or dismisses.The section bar of sley bar preferably will so be shaped: they only just can be provided with each other closely, as for example by by crooked position 53,54 with to reinforce the formed slide plate of lath 48,49 3 represented in once being aligned with each other.

Claims

1. the warp-knitting implement mounting bar of a knitting machine (1a, 1b, 1c, 1d, 2,3,4), this sley bar has a housing that has a kind of fibre reinforced plastics, and this housing surrounds a cavity (12,34) with wall, this cavity extends along the longitudinal direction, it is characterized in that described housing is by the section bar (10,11 of at least two openings; 10 ', 11 '; 32,33; 45,46; 57,58,63) form.

2. according to the described sley bar of claim 1, it is characterized in that at least one section bar (10,11; 10 ', 11 '; 32,33; 45,46; 57,58,63) form as extrusion.

3. according to claim 1 or 2 described sley bars, it is characterized in that section bar (10,11; 10 ', 11 '; 32,33; 45,46; 57,58,63) have at least one and connect surface (22,29), be close to each other at section bar plane earth described in this surface.

4. according to each described sley bar in the claim 1 to 3, it is characterized in that section bar (10,11 '; 10 ', 11 '; 32,33; 45,46; 57,58,63) paste each other.

5. according to each described sley bar in the claim 1 to 4, it is characterized in that at least one section bar (10,11; 10 ', 11 '; 32,33; 45,46; 57,58,63) a fixedly auxiliary element (20,40,51,61) is set in cavity (12,34).

6. according to the described sley bar of claim 5, it is characterized in that described fixedly auxiliary element (20,40,51,61) is arranged on wherein two section bars (10,11; 10 ', 11 '; 32,33; 45,46; 57,58,63) in the position that overlaps each other.

7. according to claim 5 or 6 described sley bars, it is characterized in that fixedly auxiliary element (20,40,51,61) pastes.

8. according to each described sley bar in the claim 1 to 7, it is characterized in that section bar (58,63) has the groove (67) that extends transverse to longitudinal direction in its outside, the lath (68) of waveform is set between this groove.

9. according to the described sley bar of claim 8, it is characterized in that, a common cannelure (64) that extends along the longitudinal direction is connected with groove (67), described cannelure is arranged in the additional section bars (63), and this additional section bars is arranged on being arranged on the side outside the described cavity of a section bar (58).

10. according to each described sley bar in the claim 1 to 9, it is characterized in that at least one section bar (10,11; 10 ', 11 '; 32,33; 45,46; 57,58,63) by a kind of prepreg (57-1,57-2,57-3; 58-1,58-2,58-3; 63-1,63-2 63-3) constitutes.

11., it is characterized in that described prepreg (57-1,57-2,57-3 according to the described sley bar of claim 10; 58-1,58-2,58-3; 63-1,63-2 63-3) forms as the UD-prepreg.

12., it is characterized in that section bar (10,11 according to the described sley bar of claim 11; 10 ', 11 '; 32,33; 45,46; 57,58,63) by at least two prepregs that overlap each other (57-1,57-2,57-3; 58-1,58-2,58-3; 63-1,63-2 63-3) constitutes, and their machine direction surrounds a predetermined angle.

13., it is characterized in that (57-2,58-2 63-2) have a machine direction of extending along the longitudinal direction at least one prepreg, and at least one prepreg (57-1,57-3 according to the described sley bar of claim 12; 58-1,58-3; 63-1 63-3) has a machine direction transverse to the longitudinal direction extension.

14. according to the described sley bar of claim 13, it is characterized in that, a prepreg (63-1) with the machine direction of extending transverse to longitudinal direction be set on an outer surface of section bar (63) at least.

15., it is characterized in that described housing has the fibre composition higher than prepreg according to each described sley bar in the claim 10 to 14.

16., it is characterized in that at least one section bar (10 ', 11 ' according to each described sley bar in the claim 1 to 15; 32,33; 45,46; 57,58,63) has an arch portion section.

17., it is characterized in that at least one section bar (10,11 according to each described sley bar in the claim 1 to 16; 10 ', 11 '; 32,33; 45,46; 57,58,63) have a bending and away from the reinforcing lath (28,44,48,49) of cavity.

18., it is characterized in that these section bars (45,46) have a kind of shape (53,54) according to each described sley bar in the claim 1 to 17, can only be close to each other with a kind of unique aligning direction with the described section bar of this shape.