CN103789944A - Needle drive device for embroidery machinery - Google Patents

Abstract

The needle drive device has a drive portion (4) that is provided with a rectangular shell-like recess (21) that is fitted with a drive rod (7). The hold-down force is acted between the drive rod and the drive portion. The hold-down force is formed between the recess of the drive portion and the drive rod. The hold-down force between the drive-side end of the drive portion and the drive rod is acted by a magnetic force. The recess is formed as locking connection. The drive rod is engaged by a locking lug in the recess.

Description

The pin of knitting machine drives

Technical field

The present invention relates to a kind of pin as claim 1 knitting machine as described in the preamble drives.

Background technology

In the knitting machine of described type, there are many knitting needles to be loaded by public drive unit.Drive unit mainly comprises drive rod, and it is connected with many levers anti-rotationly, thereby these levers are driven in rotation direction and vibrate by drive rod.Therefore the free end that vibrates lever swings quiveringly with the angular ranges of approximately 25 degree, and the upper end of lever is connected with drive rod, and it extends conventionally in the whole machine length of knitting machine.

Therefore drive rod is for example correspondingly the slewing area vibration of 25 degree take two ends.On drive rod, place the driving claw of multiple parallel and adjacent settings.Between driving claw and drive rod be connected by the rear end at driving claw on unlimited dished form, driving claw surrounds the basic drive rod for circular contour at least in part, the displacement that realizes thus driving claw drives.

The microscler handle shape parts that driving claw itself is designed to conventionally be made of plastics, and on leading section, be loaded with needle rack, and be provided with knitting needle on the leading section of knitting.

Needle rack is supported movably in two spaced sliding bearings, and wherein sliding bearing is contained in housings, and its position remains on knitting machine regularly.

In order to make pin in definite position work, be known that sincere son is set below needle rack, it forms rotatable hook, and the bottom surface that makes hook abut against driving claw at definite position of rotation of sincere son thus pushes, and this makes it be disengaged by its half unlimited depression and drive rod.Can make in this way the drive rod of each driving claw and vibratory drive be disengaged.

For fear of drive rod by mistake pull-out from half unlimited depression on the rear end of driving claw, knownly by spring, driving claw is loaded like this, make it by remaining on drive rod under its half effect that is recessed in spring force of opening wide.

Therefore if driving claw and drive rod are disengaged, must overcome the spring force of the spring that presses driving claw, be disengaged with drive rod thereby make half of driving claw open wide depression.

Known in the prior art, the described spring that presses is arranged on the join domain between needle rack and driving claw.

This presses spring and on needle rack, produces relatively violent, less desirable torque, and this makes the sliding bearing that is attached to needle rack bear in less desirable mode the power of tumbling, and this has caused the sliding surface of sliding bearing to wear and tear in advance.

Especially in the time of high speed, can bring problem, because vibration is not only present on the mass axis of driving claw, the drive end depression of therefore surrounding partly the driving claw of drive rod may be disengaged with drive rod, thereby causes danger.For fear of this point, must make to press spring and produce relatively large spring force, for guaranteeing that half of driving claw opens wide the positive engagement being recessed on drive rod.But spring force is larger, needle rack turns over or to block rib also larger in the danger of the sliding bearing the inside of subordinate in shell updip, and wearing and tearing are also larger.

When this external high rotating speed, on driving claw, produce additional vibration and oscillation, they have the depression of driving claw end and the trend that drive rod is disengaged of making equally.This also always needs larger spring force, and this is less desirable.

Summary of the invention

Therefore the object of the invention is, the pin that improves the knitting machine of the above-mentioned type drives, and makes the sliding bearing that is attached to needle rack under very small wearing and tearing.

In order to achieve this end, the invention is characterized in the technology instruction of claim 1.Dependent claims is favourable embodiment.

According to the present invention, the defect having realized that is, provides half of spring and the driving claw that press of loading to open wide depression and arrange at intervals, and consequent lever arm is at driving claw and be contained on the needle rack of driving claw the inside and produce less desirable torque.

Therefore according to the present invention, the compaction forces that the half unlimited top of caving in of driving claw is pressed on drive rod produces and the direct half unlimited region of caving in by being pressed in driving claw voluntarily.Avoid being thus arranged on the spring that presses that leaves this recess and produce disadvantageous leverage.Also eliminated thus and be regarded as the disadvantageous torque of needle rack, and sliding bearing no longer carrys out prestrain with the tilting moment of needle rack.

Therefore key character of the present invention is, removal belongs to the spring that presses of prior art, it not only applies and presses torque on the drive end of driving claw in less desirable mode, but also additionally applies tilting moment or rotating torques on the sliding bearing of the shell end of needle rack in less desirable mode.Because press spring and be substantially disposed in middle part or the front end position of driving claw, therefore not only produce and press torque in less desirable mode, and additionally produce tilting moment.

In a word, the invention describes three kinds of diverse ways, they are all for reaching identical object, remove the known tilting moment relevant to pressing spring and are only in half unlimited depression drive rod is produced to compaction forces at the drive end below of driving claw.

Compaction forces herein, be between the depression of driving claw and drive rod and directly produce at the drive end of driving claw, and used the drive rod without spring, this spring additionally produces tilting moment in less desirable mode on the sliding bearing of the shell end of needle rack.

All examples described below itself can both form separately patent and itself all advocates patent protection.Also relate to three independently patent requirements at this, they are all for identical object, that is, avoid on the sliding bearing of the shell end of needle rack, increasing wearing and tearing, therefore can not produce the tilting moment acting on sliding bearing.

Therefore in the preferred embodiment of the present invention, be intended to remove spring and the substitute is directly produce compaction forces on the drive end of driving claw.

This compaction forces is designed to magnetic force by first embodiment of the invention, this means between the drive end of driving claw and drive rod and applied magnetic force, and it makes two parts keep together with the form of permanent magnet.

Only, mention the sincere period of the day from 11 p.m. to 1 a.m of driving claw due to operation, can cancel this magnetic-adsorption, drive sincere sub-bottom side to press sincere son by abutting against simply, thereby sincere son opposing magnetic force is pulled out from driving claw.

Therefore be by applying the advantage that this magnetic force has because removed spring completely, therefore removed less desirable, as the essential tilting moment existing in spring solution above.Only the drive end of driving claw be in be arranged at this driving claw depression and drive rod between produce compaction forces.

In order to produce this magnetic compaction forces, have different embodiments, and these can both obtain from content of the present invention.

In the first embodiment, described driving claw is made up of plastic material, and in described plastic material, for example, one or more permanent magnets is set above the depression of driving claw, and they produce compaction forces together with ferromagnetic drive rod.

Therefore described drive rod also must be made up of a kind of material of magnetic.In this programme, it must be made up of iron type materials.It also can comprise plastic material, and inserts therein corresponding magnetic part.

Equally in another embodiment, other magnet can be also set in drive rod itself, they be embedded into the magnet acting in conjunction in driving claw.

Needn't necessarily form magnet by rectangular magnet.It can be also bowl-shape magnet, the bowl-shape magnet in the depression of described this driving claw on the width range of diameter, surround drive rod and therefore with its collaborative work.On little space, produce in this way the very large magnetic force between driving claw and drive rod.

Be independent of foregoing solution, but in the another solution also realizing with foregoing solution work in combination, desired, be connected to form by the locking of mechanism at the drive end of driving claw and the compaction forces that is associated with between the drive rod of drive system.

Being fastened and connected of this machinery so has feature and forms, make depression itself be designed to grab and close connection, make thus drive rod only extend and join depression the inside to by flexibly overcoming latch projection in the lock flange of driving claw, and remain there by latching force.

Can stipulate in another embodiment, apply sealed power by one or more spring-loading locking balls, described locking ball can take the bonding station on drive rod circumference to.

What replace locking ball or beaming roller is also to use other Lock Part, for example alignment pin, or spring itself also can be formed as locking member.

With above-mentioned feature the first feature, the scheme that permanent magnet is set in order to produce definite compaction forces combines, and here described mechanical locking also can be additionally with combined for generation of the permanent magnet of magnetic attachment power.

The content of another independent claims that provide in the 3rd embodiment of the present invention's design is to provide compaction forces by mechanical linkage guiding mechanism.; pressing by mechanical connecting rod between driving claw and drive rod leads to realize; make the fixing connecting rod in position for example be arranged on driving claw top; and described driving claw is connected with at least one guide finger; described guide finger extends on the surface-supported bottom side of moving area in definite range of movement of driving claw, thereby prevents that the drive end depression of driving claw is disengaged with drive rod.

But in another shift position of driving claw, depression and the drive rod of the sincere son end of the driving claw of driving claw are disengaged.The guide finger being connected with driving claw in this range of movement thus can pushed movement, allows thus to pull out from the sincere sub-concave end of the drive surfaces of drive rod.

The another embodiment of the present invention's design is that described connecting rod guiding is no longer designed to be fixed to shell and be formed on outside, but connecting rod guiding is arranged on the drive end of driving claw itself.Drive rod has and leaves drive rod arranges and the drive pin that is connected with drive rod in this case.In for example long hole shape of this drive pin on the drive end of driving claw, bending connecting rod guiding, be guided, and with the machine-processed acting in conjunction of leading of this connecting rod.

In this mobile guide, only can guarantee that, on the specific displaced position of driving claw, the depression of driving claw end can be disengaged with drive rod.

This pull-out location is the position that driving claw reclaims completely, because on the position of this recovery, on driving claw, no longer effect has dynamic force, and this will only make driving claw and drive rod be disengaged.

All the above embodiments can combine mutually, but also enjoy alone protection.

Subject matter of the present invention is not only provided by the content of each claim, and is provided by the mutual combination of each claim.

Allly comprise that in data disclosed explanation and feature in summary, the space structure shown in especially are in the accompanying drawings all the rights that the present invention advocates, they are compared and innovate with prior art alone or in combination.

Accompanying drawing explanation

Explain in detail the present invention by means of the accompanying drawing of multiple embodiments below.Provide the important feature of other the present invention and advantage of the present invention at this by accompanying drawing and its description.

Accompanying drawing illustrates:

Fig. 1 is the side view driving according to the pin of the knitting machine of prior art,

Fig. 2 is the side view having according to the driving claw of the feature of first embodiment of the invention,

Fig. 3 is the profile having according to the driving claw rear end being fastened and connected of the second embodiment,

Fig. 4 is the profile with another locking syndeton according to Fig. 3,

Fig. 5 is the stereogram of another embodiment of driving claw and the first embodiment of pull bar guiding,

Fig. 6 A-6B is another embodiment of the guiding of the connection connecting rod two different pivot locations between driving claw and drive rod.

Reference numerals list

1 pin

2 needle racks

3a sliding bearing

3b sliding bearing

4 driving claws

5 pivots

6 springs

7 drive rods

8 levers

9 pivots

10 torques

11 arc of movement

12 positions

13 positions

14 shells

15 sincere sons

16 pivots

17 directions of arrow

18's) hook

19's) bearing block

20 directions of arrow

21's) depression

22 permanent magnets

23 permanent magnets

24 pull-back forces

25 wear surfaces

26 wear surfaces

27's) excircle

28 latch projection

29 enter inclined-plane

30 lock flange

31 locking balls

32 springs

33 corresponding bearings

34 cross-drilled holes

35 connecting rods

36 guide fingers

37 directions of arrow

38 directions of arrow

39's) bearing-surface 40 distances

41 free positions

42 drive pins

43 couplers

44 slide rails

45 guide rails

46 guide rails

47's) central axis

48 directions of arrow

The specific embodiment

By means of the Fig. 1 that describes prior art, parts of the present invention are described.All identical parts shown in Figure 1 are also applicable to the present invention, and different is to have removed in the present invention the spring 6 shown in Fig. 1.

Pin 1 is from being fixed on above needle rack 2.Needle rack 2 is at sliding bearing 3a, and 3b the inside is longitudinally being supported movably.Driving claw 4 is connected also therefore driving needle support 2 with needle rack 2 at pivot 5.Driving claw 4 is placed in its back-end on drive rod 7, and it is vibrated and seesawing around pivot 9 by lever 8.

In the time that pin 1 is not worked, lift like this driving claw 4, it is no longer placed on drive rod 7.This point realizes by sincere sub 15 according to Fig. 1, and it is swingable and can in the direction of arrow 17, swing around pivot 16.(in the direction of arrow 17, swing) in this position, 21 be disengaged with the drive rod 7 of drive end thereby the bottom surface of driving claws 4 is pressed on hook 18 top and make the active force of driving claw antagonistic spring 6 make to cave in.

Like this, the aft section of driving claw 4 no longer engages with drive rod 7.

In order to realize being re-engaged and mobile driving of driving claw 4, make sincere sub 15 in the direction contrary with arrow 17, to swing, spring 6 makes again the depression 21 on the rear end of driving claw 4 engage with the excircle of drive rod 7 under the condition that applies its elastic load thus.

According to the defect in the solution of prior art being, spring 6 applies less desirable tilting moment on needle rack 2, because this needle rack is at the sliding bearing 3a of front-end and back-end, 3b not only moves the inside in the direction of arrow 20, and has additionally applied less desirable torque 10 on needle rack 2.This has caused just in time making the upper wear surface 26 on lower wear surface 25 and the rear end sliding bearing 3b on front end sliding bearing 3a to bear special load, thereby has produced the less desirable wearing and tearing to sliding bearing 3.

Therefore according to the present invention, remove spring 6, thereby remove less desirable torque 10 and make sliding bearing 3 remove less desirable tilting moment load.

For description below also will be pointed out, lever 8 is for example angle swinging with approximately 25 degree between position 12,13, therefore not only in arrow 20 directions, apply the motion of pure linearity, but also apply the circular motion of arc 11, it also acts on needle rack 2 in less desirable mode.

In addition sliding bearing 3a, 3b are contained in shell 14 the insides, sincere sub 15 also can be rotated to support on pivot 16 thereon.

Spring 6 acts on driving claw 4 in the embodiment shown bearing block 19 and the other end are inserted and secured on inside the hole of needle rack 2.

In order to remove spring and less desirable torque 10, in Fig. 2, according to first embodiment of the invention, be directly created in the magnetic adsorbability between these parts of driving claw and the end face of drive rod 7 at depression 21 positions of driving claw.

In embodiment herein, two permanent magnets 22,23 are arranged side by side abreast, and make the magnetic surface of its polarization as far as possible closely be arranged on depression 21 tops, and therefore directly act on the excircle 27 of drive rod 7.

In depression 21, produce the magnetic adsorbability between the drive end of driving claw 4 and the end face of drive rod 7 thus, and can not produce less desirable according to the torque 10 of Fig. 1 prior art.

Replace one or more permanent magnets that form 22,23 substantially flatly, can use bowl-shape permanent magnet.

What replace this bowl-shape permanent magnet is the magnetic part that also can use one pole polarization, wherein even can the magnetizable permanent magnet of the first one pole be set on drive rod 7 end faces and the magnet of phase contrapolarization is set in an opposed side, further improve thus the magnetic adsorbability between two parts of driving claw 4 and drive rod 7.

In another embodiment of the present invention, replace magnetic force or what be combined with magnetic picture is put forward latching force.In Fig. 3, show this point.As can be seen from Figure 3, depression 21 is associated with a position, 21 on the angular range that is greater than 180 degree, extend and latch projection 28 is set in this scope by making to cave in, it is connected with the lock flange 30 of elastic reaction, and it also has the inclined-plane of entering 29.

Therefore,, if drive rod 7 imports to depression 21 the insides in the direction of arrow 48, before drive rod 7 joins depression 21 the insides to, first must flexibly overcome latch projection 28.

It is the locking connection of mechanism.

As mentioned above, being fastened and connected also additionally with the magnetic adsorbability shown in good grounds Fig. 2 to this mechanism.

Identical condition is also applicable to connect in another locking shown in Fig. 4.Only illustrate herein, 21 excircle be open wide and in the angle that is not more than 180 degree, extend, make thus drive rod 7 by its excircle 27 easily import to depression 21 the insides.

But on excircle 27, be provided with spring-loading locking ball 31, it abuts against corresponding bearing 33 by spring 32 and setovers, produce thus definite latching force, and only could be disengaged with the excircle of drive rod 7 27 in the condition lower recess 21 that overcomes this latching force.

Also can will mutually combine according to the embodiment of Fig. 3 and Fig. 4.

Be bearing in movably cross-drilled hole 34 the insides on driving claw 4 ends at this spring-loading locking ball 31.

Fig. 5 and Fig. 6 illustrate connecting rod guiding, and their or lockings attached with magnetic are connected in combination works, and still also can advocate voluntarily right of the present invention.

Shown in Figure 5, the connecting rod 35 that is fixed to shell forms the first embodiment of connecting rod guiding, and connecting rod has formed bearing-surface 39 below.

If driving claw 4 is moved to the left in the direction of arrow 38, the guide finger 36 that makes to be thus fixed on driving claw 4 sides is bearing on the bearing-surface 39 of connecting rod 35, and the depression 21 of driving claw 4 can not be disengaged with drive rod 7.

But shown in shift position driving claw be likely drawn out, because guide finger 36 enters into the scope of the free position 41 on connecting rod 35 rear ends, therefore whole driving claw can lift with together with accompanying guide finger 36 in the direction of arrow 37, can make thus the driving claw depression 21 engaging with drive rod 7 be disengaged with it.

Distance 40 between bearing-surface 39 and guide finger 36 means, guide finger 36 with certain gap on connecting rod 35 along slip.

In another embodiment of the guiding of slide rail shown in Fig. 6 A and Fig. 6 B, two different position of function shown in it.

In Fig. 6 A, show in position 12, driving claw 4 can not be disengaged with drive rod 7.For this reason, drive pin 42 is connected with the central shaft 47 of drive rod 7 by the coupler 43 not being shown specifically, and is embedded into the first guide rail 45 the insides of the slide rail 44 of two bodies.

Therefore slide rail 44 is made up of the first guide rail 45, and the arc of movement 11 that it is basically parallel to lever 8 by its longitudinal axis is aimed at, and can not be disengaged with slide rail 44 thus at this position pin 42.

And in position 13, drive pin 42 enters the scope of the second guide rail 46, it is basically perpendicular to the extending longitudinally of the first guide rail 45, therefore can be disengaged and pull out with drive pin 42 at this position pawl 4.

All above-mentioned embodiments are characterised in that, only in the drive end region of driving claw 4, the region being associated with the drive rod 7 of drive end in its depression 21 produces compaction forces or the releasable power of connection, at sliding bearing 3a, on 3b, do not produce less desirable torque 10, the wearing and tearing of therefore having removed these sliding bearings.

Guarantee thus greatly to improve the service life that whole pin drives, and can realize higher rotating speed.

Claims (10)

1. the pin for knitting machine drives, comprise driving claw (4), it has depression (21), in described depression (21), embed drive rod (7), wherein between drive rod (7) and driving claw (4), act on compaction forces, it is characterized in that, between the depression (21) of driving claw (4) and drive rod (7), form the compaction forces acting on driving claw (4).

2. the pin for knitting machine as claimed in claim 1 drives, and it is characterized in that, the compaction forces between drive end and the drive rod (7) of driving claw (4) works with the form of magnetic force.

3. the pin for knitting machine as claimed in claim 1 or 2 drives, and it is characterized in that, in the top of the depression (21) of driving claw (4), at least one permanent magnet is set, and jointly produces compaction forces with ferromagnetic drive rod (7).

4. drive for the pin of knitting machine as claimed any one in claims 1 to 3, it is characterized in that, described magnet rectangular area or bowl-shape surround or round the depression (21) of driving claw (4).

5. the pin for knitting machine drives, comprise driving claw (4), it has depression (21), in described depression (21), embed drive rod (7), wherein the compaction forces between drive rod (7) and driving claw (4) works, it is characterized in that, described compaction forces works with the form of the sealed connection of machinery.

6. the pin for knitting machine as claimed in claim 5 drives, and it is characterized in that, described depression (21) is formed as sealed connection, and wherein said drive rod (7) joins in depression (21) by lock flange (30).

7. the pin as described in claim 5 or 6 drives, and it is characterized in that, described latching force works by least one spring-loaded locking ball (31), wherein leans on the excircle (27) in drive rod (7) at locking ball described in latched position (31).

8. pin as claimed in claim 6 drives, and it is characterized in that, described sealed connection is formed by the form of at least one stop pin or at least one spring or at least one beaming roller.

9. the pin for knitting machine drives, comprise driving claw (4), it has depression (21), in described depression, embed drive rod (7), wherein compaction forces works between drive rod (7) and driving claw (4), it is characterized in that, described compaction forces forms with the form of mechanical linkage guiding, and wherein at least one guide finger (36) leans on the connecting rod fixing at least one position (35).

10. pin as claimed in claim 9 drives, and it is characterized in that, described drive rod (7) is furnished with drive pin (42), and it joins in the connecting rod guiding on the drive end of driving claw (4).

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