CN1019824B - Openshe dwell type bobby mechanism - Google Patents

Abstract

The multi-arm shedding mechanism that loom is used has support to make the frame mechanism of reciprocating first knife-shaped plate of out-phase and second knife-shaped plate radially with the frequency of loom, and a plurality of rocking arms can be combined with braiding Coupling and control braiding are combined So that form the warp thread shed open.For in hook and the knife-shaped plate one or another are meshed, hook is installed on the pivot in each rocking arm, when driving the hook motion, just can be meshed with a knife-shaped plate that starts to control making usefulness.Hook is by the control of braiding style controlling organization, and therefore, the rocking arm of commutation can move by the mode of style controlling organization defined.

Description

Openshe dwell type bobby mechanism

The present invention relates to the loom Openshe dwell type bobby mechanism, particularly relate to the chain loom that has with the frequency transmission operated of loom.

In the design knitting program, Openshe dwell type bobby mechanism can provide optimal shed open performance." opening " allow warp thread from two reference positions opening warp thread controllably; " pause " then allows to make when weft yarn inserts opening to keep narrow and stable.Therefore, opening has been eliminated and will inevitably cause useless the end of a thread motion in the past when unity reference is controlled, and pauses and has then avoided because of excessive and unstable warp excess elongation and the broken string that causes of shed open.Chain loom with the frequency work of loom is controlled by a gear drive usually, its typical case's representative is Leeming chain loom and the Knowles chain loom that everybody knows, they mainly comprise a travelling gear and the crankshaft toothed wheel with the continuous operation of loom frequency, (it is by controllably transmission, each half way around), like this, each half way around motion of bent axle all can be passed to rocking arm by a crank rod, and the end positions of bent axle then defines two reference positions of opening.In the Leeming chain loom, starting to control the mechanism that makes usefulness is travelling gear, and in the Knowles chain loom, what start to control making usefulness then is driven gear.In both cases, travelling gear has only half cycle that tooth is arranged, so anodontia half represented no load movement and caused pause.Gear-driven chain loom is suitable for positive opening very much, but can not adapt to high loom speed, and the restriction of this speed is because well-known factor: the gear drive part is to the resistance of quick control; The inertia that crank mechanism transmits motion; The acceleration of driven gear is very big when each motion begins; And the difficult modulability of dead time.However, gear-driven chain loom still has the stable intrinsic advantage of opening, because, in opening and pause

In the course of action, driving parts and driven part do not contact each other.

In the chain loom with half frequency work of loom, for example in the Keighley chain loom that everybody knows, it is very common using reciprocating type transmission mechanism.It but is rare using reciprocating type transmission mechanism in the chain loom of loom full rate work.But, a previous invention of the inventor (is seen Swiss Patent No.370,025 and BP No.988,690) then be exception, in this patent, similar to the Leeming chain loom, control by transmission mechanism, the present invention is then more similar to the Knowles chain loom, and it is controlled by follower.And consistent with the standard technology of dobby machine, the present invention uses rocking arm to form the shed open of braiding Zong Fine-floss-silk.

The objective of the invention is to overcome the shortcoming that chain loom in the prior art can not controllably pass to the total movement of transmission mechanism the rocking arm that separately weaves Zong Fine-floss-silk, and a kind of chain loom that has reciprocal transmission mechanism is provided, this transmission mechanism can controllably pass to the rocking arm that separately weaves Zong Fine-floss-silk to its total movement.

For realizing above-mentioned purpose of the present invention, the invention provides the multi-arm shedding mechanism that a kind of loom is used, comprise first knife-shaped plate and second knife-shaped plate, support the framework of first and second knife-shaped plates, a plurality of rocking arms, comprise and make the mechanism that hook mechanism activates and the controlling organization of style mechanism, according to the present invention, described first and second knife-shaped plates are installed on first and second by first and second gears and first and second side arms respectively, first gear and first side arm are associated working, and all be fixed on first, second gear and second side arm also are associated working, but be contained on second, they are unfixing dead, first gear and second gear intercouple, but first fixing dead in the comprehensive Fine-floss-silk of multi-arm, then fixes for second, therefore

By coming first of back rotation just can make the transmission knife-shaped plate between two fixed positions, out of phase do radially reciprocating motion with the loom frequency; Described rocking arm rotates around fixed axis, and each rocking arm all has a fixed gap and one to be contained in two-way hook on the axle on the rocking arm, and when described rocking arm during in last reference position, breach is meshed with a lifter;

Described controlling organization comprises some compound rods, each bar has a rigid element and an elastic part, also comprise the style tube, the style tube has protruding pin, when compound rod contacts with protruding pin, compound rod rises, and make rocking arm in last reference position, and when compound rod and pin interbody spacer facing to the time, compound rod is fallen on the public rod, make hook and a knife-shaped plate mesh and discharge lifter and throw off rocking arm, rocking arm just comes on the following reference position that is limited by cross bar.

The major advantage of multi-arm heald lifting device of the present invention is: it connects the total movement of transmission device and rocking arm; It reaches the purpose of control by the hook of easy operation and control; It guarantees good opening stability by keep driven part and the discontiguous way of transmission mechanism in opening and pause process; It can begin each driven motion with moderate acceleration; It has the equipment that changes the dead time; The size of its dobby is rather economical.

Below, set forth the present invention by the accompanying drawing example.

Chain loom cross-sectional front view when Fig. 1 is in the reference position for the performance rocking arm.

(for the sake of clarity, having omitted the knife-shaped plate transmission mechanism).

Fig. 2 is and Fig. 1 corresponding view, but the expression rocking arm is in reference position down, and shows abridged mechanism among Fig. 1.

Fig. 3 is for being installed in chain loom a kind of possible layout on the loom.

As can be seen from Figure 1, transmission knife-shaped plate 1 and 2 is out of phase done radially reciprocating motion with the loom frequency, and shown in long arrow, each knife-shaped plate is the opening stroke that begins it from different reference positions.After the trip finished, knife-shaped plate was got back to original position, and still, knife-shaped plate is unloaded during backhaul, and two knife-shaped plates move simultaneously, produced a pause phase.All have a fixed gap 4 and one to be contained in two-way hook 5 on the axle 25 of rocking arm 3 on a plurality of each rocking arm of rocking arm 3() be to install like this, can make hook between two knife-shaped plates and can be on specific reference position alternately join with one of them knife-shaped plate, rocking arm 3 rotates around fixed axis 12.Fig. 1 shows a representational rocking arm when being parked in reference position (corresponding with the reference position of knife-shaped plate 2), on this position, gap position 4 be supported in cross bar 7 on fixed axis on lifter 6 be meshed.This controlling organization is made up of some compound rods 24 and braiding style tube 10, each rocking arm has a compound rod 24, it is made up of rigid element 8 and elastic part 9, the style tube intermittently rotates, when each backhaul of knife-shaped plate, it makes a move, (not shown intermittent motion mechanism is because this mechanism is very common).Cylinder 10 whenever makes a move and promptly drives interval between protruding pin 10 or pin facing to each compound rod 24.If require rocking arm to be on the reference position, then protruding pin 10 ' appearance.Fig. 1 shows the last reference position of rocking arm 3 and the relevant position of hook 5 and lifter 6.As can be seen, if on the style tube 10 continue a protruding pin 10 ' after another protruding pin does not also appear, rocking arm 3 and its hook 5 just remain and remain on the ad-hoc location that breaks away from fully with knife-shaped plate.

When requiring rocking arm 3 from the disengagement of last reference position, the cylinder below compound rod 24

The gap makes compound rod 24 landing between the pin that occurs on 10, and drop on one public excellent 19, this just makes hook 5 fall on the position that is meshed with knife-shaped plate 2, meanwhile, spring leaf 9 is left behind from lifter 6, and knife-shaped plate 2 arrives the end of its lost motions at this moment, engages with hook 5, discharge lifter 6, and throw off rocking arm 3.When rocking arm 3 leans against fixing cross bar 17, just arrive reference position down, at this moment, hook 5 is in the centre position between the transmission knife-shaped plate 1,2 again, as shown in Figure 2.As can be seen, rocking arm 3 is drawn downward bias by cotton rope 21, and this offseting downward can only make rocking arm 3 arrive on the following reference position that is limited by cross bar 17 among Fig. 2, and the gap occurs when between the pin on the cylinder 10, and all rocking arms all drop on the cross bar 17.

Fig. 2 shows the transmission mechanism of knife-shaped plate 1,2, and is in the rocking arm 3 of reference position down.Transmission knife-shaped plate 1,2 is respectively installed on axle 11 and the axle 12 by gear 13,14 and side arm 15,16.Gear 13 and side arm 15 are associated working, and all are fixed on the axle 11, and gear 14 and side arm 16 also are associated working, but they are unfixing dead on axle 12.Gear 13 and 14 intercouples.But axle 11 is fixing dead in the multi-arm heald frame, and axle 12 is then fixed, and therefore, by turning cylinder 11 back and forth transmission knife-shaped plate 1,2 is moved back and forth in the opposite direction.Fig. 1 and 2 illustrates the same inboard of multi-arm heald frame 20.The opposite side (not shown) of heald frame is being supported the other end of axle 11,12, on these axles, the corresponding part of gear 13,14 and side arm 15,16 has been installed.Therefore, in fact knife-shaped plate 1 and 2 is positioned at face within another side arm by separately pairing side arm 15 and side arm of 16() drive.The both sides of multi-arm heald frame 20 are bound up by cross bar 17,18.A representational rocking arm 3 and lifter 6 and the compound rod 24 relevant with it only are shown among figure, and usually, the quantity of rocking arm is that 12-24 is individual, and all be installed on same in the heart so that carry out commutation work in the same way.

Making rocking arm 3 style tube 10 below reference position shown in Figure 2 disengagement leans against compound rod 24 forward protruding pin 10 of appearance to by knife-shaped plate 1 realizes.This protruding pin raises compound rod 24, thereby relevant lifter and hook are also raise, so hook is meshed with the knife-shaped plate 1 that is in the opening start of a run, then, rocking arm is just passed in the whole motion of knife-shaped plate.When rocking arm arrive to be gone up the reference position, knife-shaped plate 1 just in time began its counter motion again, lifter 6 and breach 4 engagements, and hook 5 is fallen on the compound rod 8, and working cycles is again from the position of Fig. 1.Careful studies show that, lifter 6 must have a kind of resilient pressure that hook 5 and knife-shaped plate 2 are broken away from, and meshes with knife-shaped plate 1, and this pressure can be produced by the spring leaf 9 of compound rod.

Fig. 3 is the diagrammatic front view that the loom of chain loom of the present invention is housed.By cotton rope 21 the braiding Zong Fine-floss-silk 22 of each rocking arm 3 with loom 23 linked, it is the opening practice that meets the chain loom of common passive type that this installation is arranged.Braiding Zong Fine-floss-silk 22 since the elastic reaction that produced by the bottom motion offset downward, and by cotton rope 21 with this offset downward to move pass on the rocking arm 3.Axle 11 is linked to each other make spools 11 to come back rotation with the bent axle of loom by a crank mechanism (not shown) by the frequency of loom.Because the crank rod of axle 11 is in the drawings covered, so with dashed lines draws.Therefore, back and forth during turning cylinder 11, two strokes of transmission mechanism equate, and its dead time equals the loom circulation half by simple crank.But, if require to shorten the dead time (for example) according to the needs of narrow loom, can be with the turning cylinder 11 back and forth of drawback movement fast, this motion is that everybody knows, and is not shown.Must be noted that importantly the transmission knife-shaped plate must be with the motion of different pendulum angle so that pass to rocking arm 3 to same motion, this condition has just thought about when design gear 13 and 14 s' gearratio.

The weight that also have to be noted that the hook that is used for controlling transmission is quite light, and

And commutate easily than corresponding part in chain loom by the loom frequency movement.In addition, the motion each time of its transmission mechanism is all from zero acceleration, and makes driven part carry out identical motion.Another point it should be noted that rocking arm is not only accepted the total movement of transmission mechanism, and swings with a wide angle of waving.Owing to allow rocking arm all to swing, so might reach this requirement around identical axle or very approaching each other axle with the transmission knife-shaped plate.As a result, very short rocking arm just can transmit and reach the required enough motions of opening.When it is used for other dobbies, also has same economy.

Claims (6)

1, the multi-arm shedding mechanism used of a kind of loom, comprise first and second knife-shaped plates, support first and second knife-shaped plates framework, a plurality of rocking arm, comprise and make the mechanism that hook mechanism activates and the controlling organization of style mechanism, it is characterized in that:

Described first and second knife-shaped plates (1,2) respectively by first and second gears (13,14) and first and second side arms (15,16) be installed to first and second (11,12) on, first gear (13) and first side arm (15) be associated working and all be fixed on first (11), second gear (14) and second side arm (16) also are associated working, but be contained on second (12), they are unfixing dead, first gear (13) and second gear (14) intercouple, but first (11) are unfixing dead in the multi-arm heald frame, second (12) are then fixed, therefore by coming back rotation second (11) just can make transmission knife-shaped plate (1,2) between two fixed positions, out of phase do radially reciprocating motion with the loom frequency;

Described rocking arm (3) rotates around fixed axis (12), each rocking arm (3) all has a fixed gap (4) and axle (the two-way hook on (25) that is contained on the rocking arm (3), when described rocking arm (3) in last base position constantly, breach (4) is meshed with a lifter (6);

Described controlling organization comprises some compound rods (24), and each bar has a rigid element (8) and an elastic part (9); Also comprise style tube (10), style tube (10) has protruding pin (10), compound rod (24) and protruding pin (10) are when contacting, compound rod (24) rises, and make rocking arm (3) in last reference position, and when compound rod (24) faced toward with the pin interbody spacer, compound rod (24) was fallen on the public rod (19), make hook (5) discharge lifter (6) and throw off rocking arm (3) with a knife-shaped plate (2) engagement, rocking arm (3) just comes on the following reference position that is limited by cross bar (17).

2,, it is characterized in that the movement locus of described two knife-shaped plates is reciprocating with the rocking arm harmonic motion according to the chain loom of claim 1.

3, according to the chain loom of claim 1, the center of rotation that it is characterized in that described rocking arm and knife-shaped plate is on same axle.

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