Warp knitting machine
Technical field
The present invention relates to a kind of warp knitting machine with at least two loop-forming element sley bars, wherein at least one loop-forming element sley bar is fixed on the guiding pressure pin axle by at least one guiding pressure pin.
Background technology
Different loop-forming elements works together to be used to form coil on warp knitting machine.In order to make yarn can form coil, the thread-carrier of guiding this yarn must not only be parallel to the width of knitting machine, just move on sideslip direction with respect to knitting needle, and moves perpendicular to described width.Cause that a kind of mobile cause in back often is the deflection of corresponding sley bar.For this reason, described loop-forming element sley bar is fixed on the guiding pressure pin axle by the guiding pressure pin.Same knitting needle and pusher jack also are arranged on the sley bar of deflection.
Be in operation, loop-forming element must not collide each other.Each collision all can cause fault, and all must shut down when breaking down.Under the very thin situation of needle gage, described loop-forming element only has very little spacing to each other, and this makes that the danger of loop-forming element collision is big especially.The same risk that occurs described fault when operating rate is higher also increases.
Even people had made the corresponding in other words loop-forming element sley bar of described loop-forming element accurate pointing each other before coming into operation, still can break down but be in operation, because because different variations in temperature can produce length variations.Such as between shutdown stage and production phase, having the huge temperature difference sometimes.At first these temperature difference are discharged by the different heat energy of machine itself and produce.But also there are some external actions also can produce negative effect as the temperature difference in machine environment or sun direct projection.
Therefore be disclosed in the warp knitting machine and when shutting down, the spindle drive shell heated.Injection oil in the casing is heated to a predetermined temperature with heater for this reason, then temperature is evenly distributed in casing with oil.In the temperature range of described predetermined temperature when being in knitting machine and producing.Simultaneously in the production phase, also can use this oil, the overtemperature that is used to discharge heat and avoids thus when machine speed is very high producing by rubbing action and similar effect.Be in operation in case of necessity and must use cooling device for this reason, this cooling device remains on oily temperature on the predefined level in running.By this knockdown temperature-adjusting device, can influence the thermal expansion in the machine and partly influence the needle gage precision thus.
Be used to make the negative effect of the temperature difference to be unlikely the use that the measure that becomes too big is the loop-forming element sley bar made by fiber reinforced plastics.This plastics sley bar at material with respect to not too responsive aspect the expansion of variations in temperature.At this, described loop-forming element sley bar remains on the guiding pressure pin axle by means of a plurality of guiding pressure pins, and described guiding pressure pin axle extends on whole working width equally.Problem in this case is, these guiding pressure pin axles be formed from steel usually and thus under heat affecting the degrees of expansion with respect to the loop-forming element sley bar differ widely.This will cause very disadvantageous distortion, and this distortion has a negative impact to the needle gage precision.Because the described loop-forming element sley bar that is made of plastics absorbs any heat hardly, do not pass to described sley bar and discharge thus from the guiding pressure pin so do not have any heat yet.
This produces such consequence again, the alluvial of certain heat promptly appears in process of production and the pressure pin that causes leading on temperature raise, described guiding pressure pin then obviously cools down when shutting down.At this cooling can appear, because described guiding pressure pin can freely be subjected to the influence of room temperature relatively.
The guiding pressure pin of different loop-forming element sley bars can have diverse size and material volume.Therefore described different guiding pressure pin also produces expansion in various degree.This situation just causes described loop-forming element to move relative to each other.This situation such as when compound needle and the pusher jack acting in conjunction with regard to danger close.Just reliably guaranteed under the situation that this acting in conjunction only remains unchanged in position to each other.
Be head it off, in DE 10 2,004 023 802 B3, propose to make described guiding pressure pin axle with fiber reinforced plastics.But like this described guiding pressure pin also must be made by fiber reinforced plastics, and this just makes the very high and increase expense of solution cost.
Summary of the invention
Task of the present invention is this failure risk to be remained on the very little degree in that warp knitting machine is in service.
This task is being resolved in the following way aspect a kind of warp knitting machine that starts described type, even described guiding pressure pin has temperature-adjusting device.
Described guiding pressure pin (warp knitting machine has a plurality of described guiding pressure pins usually) can be remained on the predetermined temperature by described temperature-adjusting device.The thermal expansion that can from the beginning described guiding pressure pin be obtained under this temperature now takes in, and is used for the described loop-forming element that moves by means of this guiding pressure pin is accurately located.Described temperature-adjusting device also can work when shutting down, thereby just obtains loop-forming element desired position to each other when warp knitting machine starts.
Preferred described temperature-adjusting device also acts on guiding pressure pin axle.Corresponding, described guiding pressure pin axle also remains on the corresponding temperature, thereby also can regulate desired loop-forming element position on the sideslip direction of described warp knitting machine more accurately, the temperature when wherein considering operation certainly.
Preferred described temperature-adjusting device acts on the guiding pressure pin by described guiding pressure pin axle.Unique prerequisite of doing like this is to exist heat conduction to connect between described guiding pressure pin axle and guiding pressure pin.In many cases, it is simpler that described guiding pressure pin axle is carried out adjustment, because can touch described guiding pressure pin axle better than guiding pressure pin itself in some sections.
Preferred described guiding pressure pin axle is hollow shaft and has a passage that this passage is connected with a joint that is used for heat-carrying agent medium.Like this this heat-carrying agent medium can be guided by described guiding pressure pin axle, be used for loading predetermined temperature to described guiding pressure pin axle.This temperature then also acts on described guiding pressure pin.If correctly select this temperature at the very start, such as this temperature being chosen the temperature that when producing, exists, described loop-forming element is very accurately positioned to each other with warp knitting machine, be used for fault is remained on very little degree.
Preferred described heat-carrying agent medium is a liquid.Though be provided with at the required cost of seal of guiding pressure pin axle slightly high when using liquid.But liquid obviously more can be given heat delivery guiding pressure pin axle than gas or heat is discharged from guiding pressure pin axle.
Preferred described heat-carrying agent medium is an oil.Then this heat-carrying agent medium can be used to lubricate simultaneously.
Preferred described joint is connected with the spindle drive shell.Can use oil to be used for described guiding pressure pin axle is carried out adjustment thus, and in addition the guiding pressure pin be carried out adjustment from the spindle drive shell.Because the temperature in the spindle drive shell can be placed on the correct temperature, so can under the situation that does not have bigger fringe cost, corresponding oil is used for guiding pressure pin axle is carried out adjustment fundamentally.
Preferably in the flow path of heat-carrying agent medium, arrange a volume flow regulator.Then this volume flow adjuster can be used for guiding pressure pin axle and guiding pressure pin are carried out adjustment.If make the volume flow throttling, the heat that imports so in the described guiding pressure pin axle is just less.Corresponding, described temperature can not rise so violently.In contrast, if described volume flow adjuster allows bigger flow, that just can improve temperature.
Scheme or additional project as an alternative can be provided for the thermoregulator of described heat-carrying agent medium.Also can regulate the temperature of described guiding pressure pin with thermoregulator.
Preferred described temperature-adjusting device acts on described guiding pressure pin from the outside.Basically there is no need to change described guiding pressure pin thus.
Preferred described temperature-adjusting device has and the coefficient heater strip of described guiding pressure pin.Can be such as to this heater strip supply of electrical energy, thereby to its heating and with the described guiding pressure pin of corresponding heat transferred.Can in certain limit, regulate the temperature of described guiding pressure pin thus.
Preferred described temperature-adjusting device has heat radiator, and available this heat radiator carries out radiation to described guiding pressure pin.Then heat can contactlessly be delivered on the described guiding pressure pin.
Another kind substitute or additional project in, described temperature-adjusting device has induction mechanism.Utilize induction mechanism also energy contactlessly can be delivered on the described guiding pressure pin, this energy can be used to regulate temperature.Described induction mechanism can produce eddy current in the guiding pressure pin and/or in the guiding pressure pin axle, itself produces electrical loss heat again described eddy current, and electrical loss heat then improves the temperature of described guiding pressure pin and/or guiding pressure pin axle.Can be such as described induction mechanism on the moving track next door of side arrangement at described guiding pressure pin.
Same preferred described temperature-adjusting device has electric cooling element.Described element can be such as being to make ball element (Pelletierelement).This cooling element can be used for reducing slightly the temperature of described guiding pressure pin and/or guiding pressure pin axle in process of production.
Description of drawings
The present invention will be described in conjunction with the accompanying drawings by means of preferred embodiment below.Wherein:
Fig. 1 is the schematic diagram of the disappearing fiber of warp knitting machine,
Fig. 2 is the surrounding environment of described disappearing fiber, and
Fig. 3 is the diagrammatic elevation view of warp knitting machine.
The specific embodiment
Fig. 1 shows the schematic diagram of the disappearing fiber 1 of warp knitting machine 2 (Fig. 3).In disappearing fiber 1, arranged a plurality of loop-forming elements, that is to say that pusher jack 4 under the compound needle 3, one and two are to bent needle 5,6.Certainly perpendicular to the drawing horizontal layout a plurality of described loop-forming element 3-6.Described direction perpendicular to the figure paper plane is also referred to as " sideslip direction ".It is equivalent to a specific direction, and described warp knitting machine 2 extends on width along this direction.
Be to produce knitwear, describedly must move with respect to compound needle 3, thereby form coil bent needle 5,6.At this, described bent needle 5,6 was moved around along sideslip direction in a lopping cycle.Move at these and to carry out moving between section respectively perpendicular to sideslip direction.Described compound needle 3 is parallel to its longitudinal extension section (about Fig. 1: move and return from the lower-left to upper right) and moves.If described compound needle 3 is in corresponding position of shift-in, so described pusher jack 4 just must closed described compound needles, make this compound needle 3 can catch yarn and it is pulled through from coil.
At this, described compound needle 3 and pusher jack 4 must compare accurate localization to each other.If described pusher jack is arranged too far from compound needle 3, it sometimes just can not correctly activate described compound needle 3 so.If described pusher jack 4 is arranged too closely from compound needle 3, the power that acts on so on the described compound needle 3 is sometimes just too big.
Fig. 2 illustrates different elements now, and these elements are used for the corresponding mobile of single loop-forming element 3-6.Represent with identical Reference numeral with components identical in Fig. 1.
Described compound needle 3 is fixed on the needle stand 7.7 of described needle stands are arranged on the guiding pressure pin axle 9 by guiding pressure pin 8.If should rotate by guiding pressure pin axle 9, the pressure pin 8 that leads so makes described knitting needle 3 carry out above-mentioned moving with regard to deflection.Said knitting needle moves in camber line.
Described pusher jack 4 is fixed on the slide bar 10, and 10 of this slide bars are fixed on the guiding pressure pin axle 12 by guiding pressure pin 11.Described guiding pressure pin 11 is such as being clamped in by clamping device 13 on the described guiding pressure pin axle 12.
If move described pusher jack 4, that just rotates described guiding pressure pin axle 12 and correspondingly makes described guiding pressure pin 11 deflections.
As can be seen, the described guiding pressure pin 8,11 that is used for needle stand 7 and slide bar 10 differs widely on volume and length.Therefore variations in temperature in this zone can cause the length variations of the described guiding pressure pin 8 that is used for needle stand 7 and be used for greatest differences between the length variations of guiding pressure pin 11 of slide bar 10.When described variation occurring, the spacing between described compound needle 3 and described pusher jack 4 changes in disadvantageous mode.
Described bent needle 5,6 is fixed on the sley bar 14,15, sley bar 14,15 then is arranged on the guiding pressure pin axle 18 by guiding pressure pin 16,17.Same described sley bar 14,15 also moves perpendicular to sideslip direction because of rotatablely moving of guiding pressure pin axle 18.
In order especially to keep constant in the temperature in described guiding pressure pin 8,11 zones, the serviceability temperature adjusting device makes an explanation to this temperature-adjusting device by means of Fig. 3 below.
Figure 3 illustrates warp knitting machine 2, an oil groove 20 is arranged in this main shaft shell 19 with main shaft shell 19.This oil groove 20 remains on the predetermined temperature by temperature-adjusting device 21.Described for this reason temperature-adjusting device 21 not only comprises heater 22, and comprises the heat exchanger 23 as cooling device.Described temperature-adjusting device 21 makes described oil groove 20 have the temperature of substantial constant.This temperature is such as the temperature that is equivalent to be regulated when warp knitting machine moves.
Arranged different support 24 on described spindle drive shell 19, these supports 24 are supporting described guiding pressure pin axle 9,12,18.In Fig. 3, can find out described guiding pressure pin axle 9.Guiding pressure pin axle 12 then is directed to 9 on pressure pin axle and covers.
Described guiding pressure pin axle 9 (same situation also is applicable to guiding pressure pin axle 12, even following not being further explained) is a hollow shaft, and it surrounds a passage 25.This passage 25 is connected with described oil groove 20 by pipeline 26.Pump 27 is input into oil the guiding pressure pin axle 9 from oil groove 20 by pipeline 26.After oil passed through from described guiding pressure pin axle 9, return line 28 was again with its defeated getting back in the described oil groove 20.
By here as the oil of heat-carrying agent medium, with described guiding pressure pin axle 9 remain on oil groove 20 on the identical temperature.This temperature passes to described guiding pressure pin 8,11, and they also remain on the described identical temperature thus.Essentially, only needing that described guiding pressure pin 8,11 is carried out heat conduction with the pressure pin axle 9,12 that leads accordingly is connected.
Regulating described loop-forming element 3,4 o'clock, preferably just be adjusted in existing temperature in service, thereby when the position of the especially described compound needle 3 in position of regulating described loop-forming element and pusher jack 4, be created in existing temperature in service from the oil of described oil groove 20 by means of described heat-carrying agent medium.
Can be in the flow path of oil installation volume flow regulator 29 and/or thermoregulator 30, utilize these two adjusters 29,30 can influence from from the heat output of the oil of oil groove 20 to described guiding pressure pin axle 9.If with described volume flow adjuster 29 a spot of oil can be flow through from described guiding pressure pin axle 9, that is just correspondingly with the described guiding pressure pin of a spot of heat transferred axle 9, thereby the degree that elevates the temperature is very little.When flow is big, then correspondingly more heat is passed to described guiding pressure pin axle 9, thereby produce corresponding higher temperature.By means of described thermoregulator 30, the temperature of the oil of the pressure pin axle 9 that can lead flowing through is transferred higher or lowerly.Certainly with the mode that is not shown specifically sensor is set, these sensors are detected temperatures on guiding pressure pin 8,11 and/or guiding pressure pin axle 9,12, so that described temperature is notified to described adjuster 29,30.
Clearly, also can correspondingly carry out adjustment to the guiding pressure pin axle 18 of bent needle 5,6 to being used for.
Can carry out adjustment to described guiding pressure pin 8,11,16,17 in the mode that is not shown specifically, can carry out adjustment such as heater strip, induction heating apparatus or heat radiator by alternate manner by the electricity operation at this.Also can on every guiding pressure pin 8,11, arrange cooling element, make the cooling element of ball element form such as layout.