CN1157508C

CN1157508C - Tricot machine

Info

Publication number: CN1157508C
Application number: CNB011030100A
Authority: CN
Inventors: F; F·埃克斯纳
Original assignee: Karl Mayer Textilmaschinenfabrik GmbH
Current assignee: Karl Mayer Textilmaschinenfabrik GmbH
Priority date: 2000-01-14
Filing date: 2001-01-12
Publication date: 2004-07-14
Anticipated expiration: 2021-01-12
Also published as: DE20000582U1; US20010008079A1; ITTO20010015A0; CN1306108A; KR20010086279A; FR2803858A1; ITTO20010015A1; KR100385628B1; JP2001214353A

Abstract

A warp knitting machine with cumulate reducer producing for the displacement of a comb in which at least one addition member is made operative by an eccentric cam which, with the assistance of a switchable coupling, is rotated 180 degrees by a drive shaft. The mean rate of rotation of the drive shaft depends upon the main drive shaft and which rate, at the switching moment, is substantially reduced to 0. A sensor obtains the rate of rotation and the turning angle position of the main shaft and outputs an corresponding sensor signal. Drive is implemented by electric motor. A motor control mechanism for an electric motor includes an input port for the sensor signal. In addition to storing at least one movement curve, which is read out dependent upon the angular position of the main shaft for the formation of a control signal, and which has at least one segment of reduced angular rotational speed, the machine is provided with synchronization means in timely correspondence with the switching moment.

Description

Warp knitting machine

Technical field

The present invention relates to a kind of with accumulating the warp knitting machine that decelerator produces the sley bar displacement, wherein have at least an additional link to work by an eccentric wheel, it is driven for moving 180 ° by a power transmission shaft revolution with the clutch that can connect, its mean speed depends on the rotating speed of main shaft, and preferably is reduced in the moment of connecting and approaches zero.

Background technology

This a kind of warp knitting machine is put on market, and its basic structure can obtain from DE 31 17 683 C2.If drive by a so-called step drive device at the main shaft of this power transmission shaft by warp knitting machine, the rotating speed of power transmission shaft is reduced earlier, almost reach till zero up to the moment of connecting, and then the words that raise gradually, then clutch can be connected reliably, and make moving component (eccentric wheel, connecting rod and like) enter operation with not too high acceleration from inactive state.Step drive device has a bigger structure, and need make with very high precision, thereby is a very expensive component.Another shortcoming also is: the quiescent time of stepper drive and the adjustment of collecting apparatus cost are bigger, and must realize by mechanical means.

Summary of the invention

Task of the present invention is to provide a kind of foregoing the sort of warp knitting machine with simple structure.

Solve like this according to this task of the present invention, be that it has rotating speed and the corner that a sensor detects main shaft, and output corresponding sensor-signal, power transmission shaft drives by a motor, and be provided with the control device of a motor, this control device has the input unit of a sensor signal, the memory of storage at least one curve movement, this curve movement is read out to constitute the relation between control signal and the angle of eccentricity position, and have the section that at least one tarnsition velocity reduces, control device also has one to make described section with connecting the synchronisation stage that moment is consistent in time.

In this structure, a power transmission shaft of accumulation decelerator of having abandoned extremely being used always so far be the substitute is and used a servomotor by the method that main shaft mat mechanical means drives, and it only connects by a signal circuit with main shaft.It can be connected with required process with simple method.It is achieved like this, and promptly a stored curve movement is scanned, and moves by this.By the method, can need obtain so-called quiescent time with very simple method and very little occupation of land, and regulate with shirtsleeve operation.

Here advantageously: in control device of electric motor, be provided with the mechanism that is used for changing curve movement.Can consider different acceleration and deceleration thus, being occurred when moving with different rotating speeds as power transmission shaft at the accumulation decelerator.

Recommendable in addition is to be provided with tarnsition velocity is reduced section at connecting the mechanism that moment regulates in sensor.This mechanism can be used for making the static of accumulation decelerator power transmission shaft to realize synchronously with connecting moment, and in order to accurately to be adjusted to the configuration of an optimization.

Also like this consider that in an embodiment preferred promptly clutch is provided with a groove one on by the synchronizing shaft that motor drove at least, and have at least a ratchet to be inserted in the groove connecting moment.This ratchet can rotate round a point of rotation on the eccentric wheel, and pulls out from groove after revolution moves 180 °.When using ratchet, have a bit very important, should be directed extremely lentamente through this ratchet at connection moment groove exactly.

In a very simple embodiment, the accumulation decelerator is made up of a mirror disk (Spiegelscheibe) and an additional link (Additionsglied).Mirror disk is used for controlling common pin foremast yarn and underlap.Additional link then makes this control move round a predetermined needle gage.For example can obtain in the additional link of a pin of when main shaft revolution second circle, connecting one basically by fringe form once the fabric of not decoherencing.

This also represent this additional link can not only with it and also can also be with other style point elements, for example a mirror disk combines.

Now that the present invention is described in detail is as follows according to the preferred embodiment shown in the accompanying drawings.

Description of drawings

Fig. 1-by warp knitting machine structure circuit diagram of the present invention,

An embodiment of Fig. 2-curve movement,

Fig. 3-by the part stereogram of a mapping mode of the adoptable accumulation decelerator of the present invention.

The adjusting of Fig. 4-an eccentric wheel and connecting rod.

The specific embodiment

Warp knitting machine 1 has a sley bar 2 in Fig. 1, and it moves by a direction with an accumulation decelerator 3, and returns again with a spring 4, shown in double-head arrow 5.Warp knitting machine 1 also has a main shaft 6 and affiliated sensor 7 thereof, and it sends the sensor signal of the rotating speed and the corner of main shaft 6.As is generally known for example being the scanning with encoding strip, this sensor comes work.

Accumulation decelerator 2 has a mirror disk 8, and its circumference has been determined the deposit of the sley bar that one or several working cycles is required.The rotating speed of mirror disk 8 is identical or its whole mark (ganzzahlige Bruchteil) of the rotating speed with main shaft 6 as previously mentioned, and by a kind of common coupling device 9, for example a kind of mechanical connection by the change-speed gearing deceleration transmission produces.

Accumulation decelerator 3 also has an additional link 10 that schematically illustrates, and it works by means of a connection clutch 11, and sley bar 2 is shifted round a predetermined needle gage number.It is achieved like this, and promptly motor 12 drives the power transmission shaft of expression not, and this power transmission shaft is connected with an eccentric wheel connecting moment, makes shift component work (referring to DE 31 17 683 C2) by a connecting rod after 180 ° of rotations.

Importantly the rotation speed n of motor 12 is not a constant, is reduced to and approaches zero but connect moment at each.Therefore produce a curve movement 13 (being the relation of the rotation speed n of motor 12), as shown in FIG. 2 to the corner α of main shaft b.It has the section R that a corner rotating speed reduces.The minimum of a value of curve movement 13 should overlap with connecting moment S.

One control device 14 has a memory 15 that is used for many this curve movements 13.By selecting various required curve movements 13 or changed in an input port 16.

Sensor signal is to carry by the input port 17 of a synchronisation stage 18, and it comes operated clutch 11 by a lead 19 at connection moment S on the one hand, and mat one calculator 20 comes the relation of scanning motion curve 13 and main shaft 6 angle position α on the other hand.The tachometer value of the motor 12 that is obtained converts a control signal in an output circuit 21.This output signal is defeated by motor 12 by a lead 22, and therefore the actual speed of motor forms a regulating loop to motor 12 each position by another lead 23 notice output circuits 21.

The position of curve movement 13 and shape are preferably to select like this according to the mean speed of motor 12, be that it not only produces one and approach zero rotating speed connecting moment S, and deceleration before this and in succession acceleration after this also the quality and the speed of need and moving component are complementary.The adjusting of quiescent time is done simple the adjusting by one and is realized on sensor 7.

In Fig. 3, corresponding parts are represented with the label that respectively adds 100.Sley bar 102 is operated by a push rod 131 by an angle lever 130, and its position is determined by the acting in conjunction of the additional link 132 of some.This additional link produces effect by connecting rod 133, and it moves in the ranks of additional link 132 by means of eccentric wheel 134 or leaves therefrom.Eccentric wheel 134 is respectively connected the clutch revolution by one and is driven for moving 180 °, wherein has one to be rotatably supported in ratchet on the eccentric wheel 134 and to be inserted in the groove on the synchronizing shaft 135 on clutch.Synchronizing shaft 135 is connected in the sealed mode of shape with a gear, and it carries out transmission by a driving wheel 136 that is fixed on the power transmission shaft 137.Power transmission shaft 137 is driven by a motor 112.This motor is controlled with the method identical with motor 12 among Fig. 1.

In the embodiment of Fig. 1, be provided with a mirror disk 8 and constitute two row fringes.So sley bar is regulated round a pin by means of additional link 10.And then it be behind two other fringe ranks and one with the reverse adjusting of sley bar.Produce a fabric of not decoherencing of forming by fringe basically in this way.Only with an independent additional link 10, it changes at per two of main shaft 6 discharges once connection clutch 11 in this working method.With it correspondingly, also only in main shaft 6 per two changes the rotating speed of motor 12 produce and descend.

Claims

1. the warp knitting machine that has the accumulation decelerator that is used for producing sley bar skew, wherein at least one additional link works by an eccentric wheel, it respectively drives for 180 ° by the rotation of a power transmission shaft by means of the clutch that can connect, its mean speed depends on the mean speed of main shaft, and connecting moment rotating speed decline, it is characterized in that: sensor detects the rotating speed and the angle position of main shaft (6), and the output corresponding sensor-signal, and power transmission shaft is by a motor (12; 112) drive, and be provided with a control device of electric motor (14), it has the input port (17) of a sensor signal, the memory (15) of storage at least one curve movement (13), curve movement is the relation that is used for being read out with between the angle position that constitutes sensor signal and main shaft (6), and have section (R) that at least one corner rotating speed descends and one and make described section in time with connecting the synchronisation stage that moment is consistent.

2. according to the warp knitting machine of claim 1, it is characterized in that: in control device of electric motor (14), be provided with the mechanism that is used for changing curve movement (13).

3. according to the warp knitting machine of claim 1 or 2, it is characterized in that: on sensor (7), be provided with and be used for regulating the mechanism of the decline section (R) of corner rotating speed for the relation of connecting moment (S).

4. according to the warp knitting machine of claim 1, it is characterized in that: clutch (11) is provided with a groove one on by electric motor driven synchronizing shaft (135) at least, and at least one is inserted into ratchet in the groove connecting moment, it can rotate round a run-on point on eccentric wheel (134), and extracts in groove after revolution moves 180 °.

5. according to the warp knitting machine of claim 1, it is characterized in that: accumulation decelerator (3) is made of a mirror disk (8) and described additional link (10).