DE1809626A1 - Drive device of a circular knitting machine - Google Patents

Description

Patent attorney

Dipl.Phys. Dr Walther3unius * _{13> lovember 1968}

> 3 Hannover, Abbeitr. 20,

Br.J / Ha.

My file: 1563

ELISES - Zavody textilniho strojirenstvi, generalni reditelstvi, Liberec

Drive device of a circular knitting machine

The invention relates to a drive device of a single and multi-system single and also Double cylinder circular knitting machine, in particular to control the rotary movement of the I needle cylinder, with stepless speed control and reverse operation,

All previously known drive devices for circular knitting machines consist of mechanical ones Means, i.e. Gears, which are simple or more complex types of manual transmissions for the purpose of transmission the rotary motion of an electric motor on a needle cylinder. The pendulum motion dea Hade! Cylinders, which are beneficial when knitting a classic stocking heel is used, is usually achieved in that a tooth clutch

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ORIGINAL INSPSCTED

the mechanical drive ε middle and a crank gear disengages that by means of a crank mechanism a toothed segment given a reciprocating motion, which then the drive means for the needle cylinder forms, with between Toothed segment and needle cylinder a bevel gear pair is arranged.

There are also more recent devices known which drive devices for circular knitting machines improve, e.g. the use of multi-speed asynchronous drive motors can be mentioned, which enable the speed of the needle cylinder to be selected in advance.

Likewise, a device is known which is advantageous for changing the speed of the 'Ladelzylinders an electromagnetic induction coupling makes usable, which is usually between the drive motor and the drive pulley of the circular knitting machine is incorporated.

All previously known devices of this type are expensive to produce and to operate noticeably noisy. In addition, they are also quite complicated once they have all of the requirements meet which © are placed on drive devices of this type.

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INSPECTED.

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The device according to the present invention avoids the disadvantages mentioned.

The Vies en of the invention is that the Rotary movement of the needle cylinder with the aid of the shaft of a hydraulic motor, possibly with the interposition a simple gear transmission is derived,

It is useful if the control means of the hydraulic motor consist of a pump, filter, pressure oil distributor, Throttle valves, check valves and from a misery to prevent the interruption of the oil run.

It is advantageous if the pressure oil distributor with the help of mechanical, pneumatic, electromagnetic and other means such as electromagnets programmed by the programmer of the circular knitting machine being controlled.

The drive device is expediently designed in such a way that the throttle valves, which carry out the stepless regulation of the amount of pressurized oil, are controlled by the programmer of the Sundstrickmaechine, for example by turning a rotary control slide.

The essence of the invention and other features of the

909825/1177

ORIGINAL INSPECTED

Invention are based on a schematic in the drawing !! illustrated embodiment explained in more detail. Bs show:

Fig. 1 is a circuit diagram of the individual elements the hydraulic drive device, which drives the needle cylinder with a hydraulic motor controls a circular knitting machine;

Fig. 2 shows a longitudinal section through the hydraulic motor with built-in axial piston, as well as through a electromagnetic pressure oil distributor and through check valves with schematically shown Orifice which prevents interruption of the oil flow in the pressure line j

FIG. 3, following FIG. 2, a longitudinal section by two throttle valves and by one. their associated electromagnetic pressure oil distributor for starting and stopping the hydraulic motor}

Fig. 4, following Fig. 3, a longitudinal section through a high pressure gear oil pump, overflow valve, coarse and fine filter and a schematic !! illustrated oil container.

The lower part of a needle cylinder 1 partially shown in FIG. 1 is firmly connected to a gear of a gear drive 11a and can execute a rotary movement _{in the direction of the arrows B 1} and S _2. The other gear of the gear drive 11a is firmly connected to a shaft 21 (Fig. 2) of a hydraulic motor. This essentially consists of

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a rotatable obliquely mounted Üegenscheibe 22 "can be supported on the check axial pistons 23 which are slidably mounted in a rotor 24, which by means of a feather key 25 fe with the in la ren 26 at _u eordneten shaft 21 t connected Xot. The supply of Druckül to the axial piston 2> there are inlet channels 27, main channels 28, inlet openings 29 and the pressure line A ^ or B ^. The pressure oil used is discharged through overflow lines Gg, Grj , which connect the hydraulic motor 2 to an electromagnetic distributor 3. This distributor 3 beateht of a displaceable £, ela _t Erten slide 51, i which is arranged in a ^ relieving body 32 t the advance movement of üchiebere;. 31 controls an electromagnet 33 »welcixeiü the electric Jtrom by means of an electrical line 34 (ü'i ^ ^1. . 1) via an ochalter 35 üL '^. Ef.ihrt v / ird. The cylinder body 32 (^ i ^ .2) iat nit jüi / itrittüüfl'iiun ^ en; ba, 5ßb,;> 6c, tjviie with exit & üfinungen 37a , 37b provided, welcue to the i * üh-ϊ lLi% clea Drucküle &, bzv /. zur i'üuruxig ue & used jö.er Jberoch .'..... i. ^. fct. Read serve. The aforementioned dchie-Ler 31 i & t ^ it'oeit cushioned by a Di'uc.kfeder 3ö.

Li ... t ^ overflowleiüLUi .. C 1 ^ t with 'eiriei- .blende 4 vertuen, welchfi -, 1..V ., Nt / & rbrechun-, ei ^ c L.lltiufot; in i'BT Drucklei tu. üfjtj ^ ο.ιΐ ^ βΐ; ^ .n fcrieb & i .. _{l (} r teuit verhin- & and v / eicer ir. ei ■ <-. · -U ₁ * ·. "!" · .rl; Lei tu »;., Cn

Luk lines L ^, Il vorbiri.tcn Gen -VJ ,. . > ncti

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BATH ORIGINAL

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Manifold 3 with blow valves 5? 5 *? which each consist of a valve body 51 »51 *, within each of which a piston 52, 52 'is slidably mounted and _{cushioned by means of a compression spring 53 S} 53 *. Inlet openings of check valves shown in light are connected to outlet openings 63, 63 '(Ii ¹ IiL _1. 3) of throttle valves 6 ₉ 6 * by pressure lines Aj- »Bp. The throttle valves 6,6 * each consist of a valve body 61, 61 'v / which is provided with an inlet opening 62, 62 * as well as with an already mentioned outlet opening 63,63' and finally with an overflow opening 64,64 * . Furthermore, the throttle valves 6, 6 ″ each have a slidably mounted slide 66, 66 ′, which is cushioned by means of a compression spring 65, 65 *, and a rotary regulating slide 67, 67 ′ each, which can be rotated in a chamber 68, 68 'is stored.

Pressure lines A ^ _} 3L connect the mentioned throttle valves 6,6 * with; a? · - · electromagnetic distribution. Ler 7, which consists of a body 71 in which a slide 72 is longitudinally displaceable. The control of this slide 72 is carried out by electromagnets 13,13 '$ in which the electrical bfcrom is fed by means of electrical lines 75,75' (fig.1), while the switching of the electromagnetic solenoid 73,7; ' with the help of switches 74,74 '. The body 71 (B ¹ Ig. 3) is provided with inlet openings 76a, 76b, 76c and outlet openings 77a, 77b. The slide 72 is sprung by means of compression springs 78, 78,

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BAD ORlGINfAL

The supply τοη pressure oil in the electromagnetic The distributor 7 takes place with the aid of the pressure line A, from the outlet opening 83 (FIG. 4) of the fine filter 8, which consists of a body 81 with an inlet opening 82 ″. Inside the body 81 a filter insert 84 is pushed onto a perforated tube 85. A pressure line Ag connects the entry port 82 'with an exit port 105 of the overflow valve 10, welohee from one Body 101 consists in which a slide 102 is displaceable, mounted and by means of a compression spring 103 is cushioned. In the body 101 of the overflow valve 10 there is also an inlet opening 104 and a Overflow channel 106 is provided, which the stem of the slide 102 with a Sioherungamechaniemus 107 connects »

The pressure line A-j connects the overflow valve 10 with the pressurized oil source, i.e. with the high pressure gear oil pump 9, which aue a body 91 with a There is inlet connection 92 and outlet connection 93, in the body 91 two meshing gears 94 and 95 are rotatably mounted, one of which is a gear 95 fixed by means of a key 97 a shaft 96 is connected, which of a not shown electric motor is driven. A suction line A is connected to the suction nozzle 92, the free end of which is guided into a container 12 filled with oil

An overflow opening 108 of the overflow valve 10

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ORIGINAL INSPECTED

is connected to an inlet opening 114 of a slot filter 11 by a pipe O ₁ . The slit filter 11, which works as a coarse filter, consists of a body 111 in which lamellae 112 are mounted on journals (not shown) and on a screw 113. Furthermore, this body 111 is provided with an outlet opening 115, to which a pipe O _{2 is} connected in order to return filtered oil to the container 12 in the same way as the collecting overflow pipe Oq. :

The mode of operation of the device is as follows

By starting an electric motor, not shown, the drive shaft 96 (Pig.4) ^{1 of} the high-pressure gear oil pump 9 and with it the gear 95 in the partial direction S ~ is set in rotation, which is in constant engagement with the further gear 94. As a result of the negative pressure that forms in the suction line A, the oil 13 is sucked out of the container 12 into the inlet connection 92 and displaced through the gaps between the teeth of both gears 94 | 95 in the outlet supports 93, from where the oil is discharged with the aid of the pressure line A ₁ strö'.mt into the inlet opening 104 of the overflow valve TO. If further control means of the pressure oil are set so that the pressure oil can flow through the overflow valve 10 without hindrance, the pressure oil passes through a hole in the slide 102 into the outlet opening 105 of the overflow valve 10 and thus into the pressure line A ₂ · Bin.d the further control means of the pressure oil adjusted so that the pressure oil no longer causes the overflow

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1 UBPECTZD *

valve 10 can flow through, e.g. when the iladelaylinder 1 and the like are shut down, the slide 102 is displaced against the action of the compression spring 103 due to the oil pressure and the pressure oil is diverted through the overflow opening 108 with the help of the pressure line G ₁ into the base filter 11. In this filter, the oil flowing through between individual lamellae 112 is filtered, from where the filtered oil through the outlet _{opening 115 and pressure line O 2} back jjp. the container 12 flows.

Oil in pressure line A ₂ reaches Britta opening 82 of fine filter 8,

ee filtered through the filter insert 84 radial bores of the tube 35 in the j (Jffj »ung 83 and with the help of the pressure line Inlet opening 76b (Fig. 3) aees electrof Distributor 7 is derived with

Starting and stopping the hydraulic ^ follows. By closing the switch) the electrical current is passed through the in the windings of the electromagnet it »which the slide 72 (Fig.3) in

P «shifts. As a result, arrived through the outlet opening 77a into and into the inlet opening $ 2

6. In this valve, ά & * Druoköj, including the slide 66, is inserted into the chamber 68. By turning the regulating slide 67 in the direction of the arrow 3, the amount of the penetrating pressure oil is regulated, namely in such a way that the

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BAD ORJGiNAl

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Reguliereehieber 67 only a certain length of pressure oil in the outlet opening 63 efes ^; Throttle valve 6 lets through. It is advantageous if the rotary regulating slide 67 is controlled and set in the individual desired positions with the aid of an automatic programmer of mechanical, electronic or electromagnetic type. In the event that the pressure of the pressure oil introduced into the inlet opening 62 is greater than the set pressure of the spring 65 influencing the 3 cm.el ep 66, the slide 66 moves against the action of the spring 65 mentioned so, that the slide 66 allows the excess oil to drain into the overflow opening 64, which is connected to the collecting overflow line Oq through the overflow line 0 *.

The uruok oil flowing out of the outlet opening 63 of the 6 reaches the pressure line Ag * This with the help of the pressure line A »via the check valve 5 (Fig. 2), in which the pressure oil overcomes the force of the pressure spring 53 acting on the piston 52 opens into the Mxt ^ entrance opening 36b of the electromagnetic splitter 3 "with whichever change" of the rotary ion of the shaft 21 of the hydraulic motor 2 is carried out.

The slider 5t 'b # * n $ i apparent in the au »WXG * ² 8teilung DIMF performed · Druoköl in the outlet opening 3 7 ^ ψά β omit in the pressure line A _7, which inj" j Jkat ^ ittsöffnung 29 of the Haiiptkanalea 2Θ d «I EyiHulikmotors 2 opens. Aue de »EauptkattAl 28 we ^ ## f Jlruoköl t ortechreiteBd im

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BATH ORIGINAL

"EI ³ SiIII! ¹¹ : ¹ - ¹¹ JT '-!""'-'- MBaI - '" I "» ¹ " ¹ I

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Channels 27 fed to the axial piston 23, which by the action of the supplied oil on the rotatable obliquely mounted washer 22 a !Exert pressure. With regard to the progressive Introducing the pressure oil under the axial piston 23, a movement is formed in which the axial piston 23 is firmly connected to the shaft 21 Take Hotor 24 with you. The shaft 21 then causes the rotation of the fixedly connected to it a gear of the gear drive 11a (Fig. 1), which controls the rotary movement of the needle cylinder 1 in the direction of the arrow S ^. The ones in the hydraulic motor 2 supplied Druoköl quantity controls the speed of the shaft 21 and thus also the speed of the Hadelzylinders 1. From this it can be seen that the Speed of the Hadelzylinders 1 is regulated.

By closing the switch 35, electric current is supplied to the electromagnet 33 by means of the line 34, which, as a result of an electromagnetic effect _{, exerts such a force on the slide 31 in the direction of the arrow P g} (FIG. 2) that the effect of the compression spring 38 is overcome . ' The slide 31 assumes such a position that the pressure oil flows from the inlet opening 36b through the outlet opening 37b into the pressure line B *. As a result, the pressure oil is fed through the inlet opening 29 of the hydraulic motor 2 into the main channel 28 and into the inlet channels 27 in opposite directions, which results in an opposite effect of the pressure oil on the axial piston 23 and thus entrainment of the rotor 24

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ORIGINAL! MSPSCTED

in the opposite direction. In this way there is a change in the direction of rotation of the needle cylinder 1 from the original direction S- to the opposite direction of rotation S ₂ (lig.1).

In the first lall, ie when the hydraulic motor 2 _{drives the needle cylinder 1 in the direction of rotation S 1} , the pressure oil used is from the hydraulic motor 2 (Pig.2) through the overflow line On into the outlet opening 37b and inlet opening 3βο of the electromagnetic distributor 3 and further into the Overflow line Oq discharged, which has passed before the Mnäung in the Saminel overflow line Cq with the screen 4 in order to prevent an interruption of the oil flow in the pressure line of the entire hydraulic drive system.

In the second case, ie when the hydraulic motor 2 _{drives the needle cylinder 1 in the direction of rotation S 2} (FIG. 1), the pressure oil used is discharged from the hydraulic motor 2 (FIG. 2) through the overflow line Cg into the outlet opening 37a 'and inlet opening 36a dee electromagnetic distributor 3, which is connected to the overflow line Og.

Should it be desired, the rotation program of the hydraulic motor 2 and thus also of the Uadelzylinders 1 change that in the programmer's program

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is not included, which controls the rotary regulating valve 6-7 (Fig. 3) in the chamber 68 of the valve 6, then 25.B. With a substantial ■ increase in the speed of the needle cylinder 1 (TIg .1), the supply of electrical current to the electromagnet 73 'is interrupted by the switch 74 * and the electromagnet 73 is put into operation with the aid of the switch 74. Thus, against the action of the compression spring 78 ^r (Fig. 3), the slide 72 of the electromagnetic distributor 7 moves in the direction of the arrow P ^ and the pressure oil fed into the inlet opening 76b with the aid of the pressure line JU extends into the outlet opening 77b, at which the pressure line B _{1 is} connected. Buroii this pressure line B ^ that Druoköl is fed into the second throttle valve 6 ' , the rotary control valve 67 rotates in the chamber 68' in direction S 'as required by the programmer of this rotary control valve 67 *. The entire activity of the throttle valve 6 'and also of the check valve 5 *, which is connected to the aforementioned throttle valve, corresponds to the previously described mode of operation of the throttle valve 6 and check valve ^ 5.

In conclusion it is necessary to mention that the described drive device of the circular knitting machine merely represents an exemplary embodiment because, for example, different types are finer and also coarser Pilter,.! Druok oil sources, Druok oil dispensers and also

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Control devices can be used, with the help of which the amount of Brueköl delivered is regulated in the hydraulic motor, which also does not meet the condition is that it must be equipped with axial pistons.

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«09828/1177

INSPiGTED-.

Claims (3)

Patent claims » Drive device one in and one out more some bin and also double cylinder round triok machine, in particular for controlling the rotary movement of the needle cylinder, with stepless speed regulation and reverse operation, marked! that the rotary movement (in arrow direction S ₁ and S ₂ ) of the Hadelzylinders (1) with the help of the shaft (21) of a hydraulic motor (2), with the interposition of a simple gear mechanism (11a) is derived. 2. Drive device according to claim 1, characterized in that that the control means of the hydraulic motor (2) from a pump (9) »Vilter (8,11), Druokölverteiler (3.7), throttle valves (6.6 '), ßüokeonlag-' valves (5 »5 ') and from an orifice (4) to Prevention of the interruption of the oil flow. 3. Drive device according to claims 1 and 2 »characterized in that that the Druoköl distributor (3,7) with the help of mechanical, pneumatic, electromagnetic and other means, such as electromagnets (33,75,73 ') according to the program of the programmer of the Sunde trio kaasohine controlled? will. - 16 -. «09825/1177 ORIGINAL INSPiCfED Drive device according to Claims 1 to 3, characterized in that that the throttle valves (6,6 '), which the stepless e Carry out regulation of the pressure oil volume, from l'rogranmierer the dog's trick machine, e.g. by Turning a rotary control slide (67.67 ') being controlled. BATH ORIGINAL 909825/1177 Blank page