DE2001260A1 - 19-homosteroids with sex h ormonal activity - Google Patents

Abstract

Compouds are of formula:- (where R is a system 3-keto-DELTA 4, -DELTA 1,4-DELTA 4,6 or -DELTA 1,4,6; 3-alkoxy-DELTA 3,5, -DELTA 3,5,7, -DELTA 4, -DELTA 4,6; 3-hydroxy -delta 4, -DELTA 4,6; 3-acyloxy -DELTA 3,5, -DELTA 2,4,6, -DELTA 4, -DELTA 4,6; R1 is alkyl or alkenyl; R2 is halo-alkenyl or halo-alkynyl; R3 is -OH, alkoxy, or acyloxy). Such compounds have anti-gonadotropic activity, and can be used as pharmaceutical agents in suitable formulations. Preparation is e.g. by reaction of the appropriate 17-oxo-19-homosteroid with a metal alkyl or Grignard reagent or by a variety of other methods.

Description

Electronically controlled circular knitting machine.

The invention relates to a circular knitting machine with one or more electronically controllable devices with a scanning device for scanning an information carrier and the shaping of the information stored on it into electrical control signals that can be used to control the named devices, furthermore with a transport device driven synchronously with the rotation of the needle cylinder to produce a relative movement between the information carrier and the scanning device, and with a pulse generator synchronized with the rotation of the needle cylinder Generation of clock pulses.

In known circular knitting machines of this type (USA patent 3,449,928) synchronization takes place between the transport of the information carrier and the rotation of the needle cylinder in that the transport roller of the information carrier by means of a shaft or Belt clutch is driven by the same device that rotates the needle cylinder causes. Which is unavoidable in shaft and belt drives due to play or slippage occurring phase shifts between the clock of the information carrier and the cycle of the needle cylinder can be remedied by using the pulse generator generated Clock pulses generated by scanning the information carrier generated command pulses are superimposed in such a way that the controllable devices a control signal only if there is a coincidence between a clock pulse and a command pulse is fed. Under the rhythm of the information carrier or

The cycle of the needle cylinder is understood here as the time interval, with the two consecutive pieces of information on the information carrier the scanning device or two cylinder needles lying next to each other in the needle cylinder be transported past a fixed point.

The round trick machine described works even at very high Needle cylinder rotation: aahl phase-locked synchronous, d. H. all by play or slip resulting errors are completely eliminated. As an information carrier, z * Bo a film tape, a punched tape or a magnetic tape can be used.

The disadvantage of the circular knitting machine described is on the one hand the fact that the information carrier as well as that needed to drive it Parts must always be arranged in the immediate vicinity of the circular knitting machine, because otherwise there is a mechanical coupling of the needle cylinder drive and information carrier transport can hardly be carried out, and that on the other hand for the phase-locked synchronization relatively complex additional devices are necessary.

These disadvantages are avoided if the one described above Circular knitting machine according to the invention, the transport device mechanically with a Stepper motor is coupled, which is electrically connected to the pulse generator is.

The inventive use of a stepper motor, the Supply voltage is supplied by the clock pulse generator, the z Bo between the If the webs of the needle cylinder located in the needle channels are scanned, you get pure electrical path a phase-locked synchronization. Giving up the advantage the aer information carrier and associated circuitry removed from the circular knitting machine can be arranged because the only connection between Stepper motor and circular knitting machine is a cable coming from the pulse generator, there is also the further advantage that the information carrier with each predetermined Cycle of the machine or with each predetermined cylinder needle stopped or after Shutdown can be restarted without the synchronous operation is disturbed or pattern errors are possible.

The stopping or starting of the information carrier at continuous running needle cylinder is desirable, for example, when in a knitted tube Matched pieces knitted in stockinette right-right or stockinette-right-left, rubbing off provided or smooth edges are to be formed. Leave such pieces of tubing Namely, without much effort by switching drums, timing chains, mechanical Switches and the like, i.e.

through a so-called festival program. Through such a Fixed programs can save many meters of the mostly tape-shaped information carrier and the manufacturing cost thereof can be reduced considerably because of use a circular knitting machine with e.g.

1680 cylinder needles and an information carrier with a marking line nro 1.5 mm about 2.5 m of the information carrier is required for one cylinder revolution are knitted according to a fixed program and often during many cylinder revolutions can be.

A major difficulty when switching from the fixed program to the electronic command and vice versa is that the input and Uncoupling the transport device of the information carrier in the case of very specific ones Cycle or needles of the needle cylinder must be done so that the transition from the one to the other type of control with a defined position of the needle cylinder he follows. Due to the large mass of the transport device, however, the shutdown of the information carrier or the acceleration of the same to the final speed not done within the required time of less than a millisecond be, bo that by briefly continuing to run the information carrier at Stopping or by slowly accelerating it to the final speed previously unavoidable pattern errors arise.

According to a further development of the invention, there is therefore on the circular knitting machine a device is provided by means of which the scanning of the information carrier occurs interrupted at a defined point relative to the needle cylinder or at the operating speed is resumed, this device can have at least one pulse generator included, which is connected to the stepper motor and this to stop the transport device Pulses with gradually decreasing repetition frequency to accelerate the transport device Pulses with gradually increasing frequency and in order to maintain the operational disability the transport device the clock.

supplies pulses with a constant repetition frequency At a Preferred embodiment are three rows of pulse-generating lines on the needle cylinder Elements provided, each associated with a pulse generator, the one Row of elements consisting of elements that are constantly spaced apart in the direction of rotation, the second elements row from gradually having a greater distance in the direction of rotation Elements and the third element row gradually a smaller one in the direction of rotation There is spaced elements, and are also program-controlled switches to connect the stepper motor to one of the three pulse generators intended. The stepping motor preferably drives one of the information carriers the transport roller moving past the scanning device.

The invention is described hereinafter in connection with the accompanying Drawing described for example.

Fig. 1 shows the needle cylinder of a circular knitting machine and the Parts required for needle selection including tax strips in perspective Opinion.

The fig. Figure 2 shows an improved embodiment of the invention, the the control strip can be stopped and started when the needle cylinder is rotated.

Fig. 3 is a timing diagram showing that of various Devices of the embodiment according to Figure 2 emitted pulses0 In Fig. 1 is only the rotatable in the direction of the part P needle cylinder 1 of a circular knitting machine shown schematically because the other parts of a circular knitting machine are known and are not necessary for understanding the invention. On the needle tube 1 are the cylinder needles which can be moved up and down independently of one another with the reference symbol 3 indicated. To select those Zy soothing needles that are involved in the striocing process or should not be involved, sheet magnets 5 are provided in a known manner, which are arranged at the individual knitting points on the circumference of the needle cylinder. It is only one electromagnet 5 is shown for disgrace. although with known circular knitting machines of this type generally 24, 36 or 48 electromagnets equally spaced around the needle are distributed around the circumference of the cylinder.

The control signals for the leaf magnets are transmitted from an information carrier 7 scanned, which by means of one or more transport rollers 9 on a scanning device.

device 11 is transported past. The information carrier 7 can for example be a pilmband on which the control signals are required for the knitting process Order stored in the form of translucent or opaque points are. As a result, the scanning device 11 can, for example, be an optical-electrical one Be a device that essentially consists of one or more photocells, on which the light bundles emanating from a light source 13 are focused, so that they appear depending on the presence of transparent or opaque points the control strip 7 emit electrical signals or not. The electrical signals are fed to and from an electronic system 17 via a multiple cable 15 there via lines 19 to the various electromagnets 5 forwarded. In other embodiments, a strip or card # shaped information carrier be used on which the scanning device is transported past.

In general, on the control strip 7, there are so many in the longitudinal direction running traces of transparent or opaque points provided, as electromagnets 5 are arranged on the circumference of the needle cylinder, so z. 3. 24, 36 or 48. A special electromagnet 5 is controlled by each marking track As a result, the scanning device generally has a corresponding number Photo cells on, so that each photo cell via a special line in the multiple cable 15 can be connected directly to the corresponding electromagnet 5. The electronic In this case, system 17 only contains the usual normalization and amplification circuits. In additional tracks on the control strip, markings can be used to compensate of phase shifts and light fluctuations. The required for this Circuits described, for example, in U.S. Patent 3.4490928 also accommodated in the electronic system 17.

The speed at which the information carrier 7 at the Scanning device 11 or the scanning device transported past the information carrier has to be in a special relationship with the speed of the needle cylinder 1 stand and, for example, be so large that the scanning device 11 is always accurate then a marking line on the information carrier running perpendicular to the direction of transport 7 scans when a cylinder needle 3 is guided past an electromagnet 5. In other words, the lateral distance with which two consecutive in the longitudinal direction Markings. of the inform mationstragers 7 on the scanning device 11 will be the same time interval with which two cylinder needles 3 lying next to one another around the circumference of the needle cylinder 1 on one Electromagnet 5 are transported past so that the transport of the information carrier 7 is synchron1s iert with the drowning of the needle cylinder 1 To achieve this, the transport roller 9 according to the invention is driven by a stepping motor 21, where, if necessary, between stepper motor 21 and transport roller 9 an over or Reduction 23 can be provided.

The stepper motor is Ubsr lines 25, the electronic system 17 and a line 27 is connected to a clock pulse generator 29 on the needle cylinder circumference is arranged and, for example, the needle channels or those located between them Scans webs and when the wheel cylinder rotates per passing needle electrical signal generated This signal can be standardized in the electronic system Square pulses are converted, with which the stepping motor 21 is fed. The In formationsträt-'er 7 is thus phase-locked synchronously per needle on the pulse generator wanders past to take a step, d. H. by the distance between two consecutive ones Marking lines carried on.

Devices that can be used as pulse generator 29, as well as the associated amplification and pulse shaper circuits are in themselves known and therefore do not need to be described in more detail (see USA patents 3,449,928, 3,327,499 and 3,313,128). What kind of pulse generator is used remains It is only important that the repetition frequency of the generated by it Clock signals strictly proportional to the speed of the needle cylinder is because otherwise there is no phase-locked synchronization between needle cylinder rotation and information carrier drive results.

The pulses emitted by the pulse generator 29 are shown in FIG (see pulse generator 2, synchronous operation).

I) The resulting step sequence of the stepper motor is also from Fig. 3 (cf. stepping motor, synchronous operation) can be seen.

An improved embodiment of the invention is shown in Fig. 2, Identical parts are provided with the same reference numerals. The embodiment according to Figure 2 has the advantage of being selectively based on a so-called fixed program the electronic control of the circular knitting machine (and vice versa) switched According to FIG. 2, there are three pulse generators on the circumference of the needle cylinder provided, in addition to the clock pulse generator 29, two further pulse generators 31 and 33. The pulse generators can, for. B. electromagnetically operating pulse generators (U.S. Patent 304490928), the appropriate webs 34 or the like on the needle cylinder 1 scan, or be an optical-electrical pulse generator (USA patent 3o313o128), which cooperate with a light source (not shown) that is inside the needle cylinder is arranged. For the latter case are above or below the needle channels 34 in the cylinder jacket expediently holes or slots as pulse-generating Elements 35.37 attached (Fig.2), through which the light dr light source on photocells the pulse generator 31,33 falls (U.S. Patent 3,313,128). The elements 35,37 can also be both above or both below the needle bars in the needle cylinder fastened steel bands 38,40 be formed0 Above the needle cylinder 1 iet a switching drum 39 is arranged, which is gradually supported by a driving lug 41 is rotated0 The driver nose 41 is attached to a disc 43, which is calibrated with the needle cylinder 1 rotates in the direction of arrow P. The number of steps to complete the the switching drum 39 is rotated further with each cylinder revolution, depends on the individual case away. In the Pig. 2, this number is equal to one.

On the switching drum 39 switching hooks 45, 47 are attached, which with Switches 49, 51 work together, which are arranged on the circumference of the switching drum 39 are. The switch 49 is with the pulse generator 31, the switch 51 with the pulse generator 33 connected.

Furthermore, 1 switching cam 53.55 is attached to the needle cylinder. Of the Switching cam 53 works with a further switch 57, the switching nookon 55 m1t another switch 59 together. The switch 57 is with the pulse generator 29 connected, whereas the switch 59 is connected to the electrical system 17 in this way is that the stepping motor 21 when this switch 59 is actuated by the stop cam 55 is switched from the pulse generator 33 to the pulse generator 31.

The pulse generating elements 35 or 37, aleo depending on the type of the pulse generator used, bars, slots, holes, light-reflecting discs or the like, are spaced in various ways.

The elements 35 have, seen in the rotational direction of the needle cylinder, an irntfr CIci noren Distance from one another, so that the repetition frequency of the pulses emitted by the pulse generator 31 becomes greater and greater when the first pulse is generated by element 35a and the last pulse is generated by element 35b. In contrast, the elements 37, also seen in the direction of rotation of the needle cylinder 1, have an ever greater distance from one another, eo that the repetition frequency of the pulses emitted by the pulse generator 33 becomes smaller and smaller when the first pulse through the element 37a and the last pulse through the element 37b is generated. The pulse-generating elements 34, which cooperate with the pulse generator 29, are at constant distances from one another, so that the pulse generator 29 emits pulses with a constant repetition frequency at a constant speed of the needle cylinder.

The arrangement can be made, for example, that the distance of the elements 35, starting with the element 35b, initially equal to the distance between two There are needles or webs 34 in the needle cylinder and then becomes larger until finally the distance from the penultimate element to element 35a is a multiple of the Stegabutandeu amounts to. Conversely, the distance between the elements 37, starting with element 37a, first be equal to a needle distance and then become larger and larger until it is between the penultimate element and the last element 37b a multiple of the needle spacing amounts to.

The two rows of elements 35 and 37 can be as in FIG Extend over half a cylinder circumference. However, this is not a requirement it depends, as is clear from the mode of operation described below, on it whether a half or less or more cylinder revolutions are necessary to to shut down the information carrier completely or from a standstill to its operating speed to accelerate.

The operation of the device described is as follows. It let us first assume that the needle cylinder rotates at a constant speed and the information carrier is at rest, the stepper motor 21 aleo is dead. In this operating state, knitting is carried out according to a fixed program, that is predetermined by some auxiliary devices. These auxiliary devices are not shown because they are not necessary for an understanding of the invention and are well known to the person skilled in the art.

On the circumference of the shift drum 39 is through the switching cam 47 programmed when to switch from the fixed program to the electronic control, d. H. the information carrier 7 is to be used for the knitting process. if the switching cam 7 reaches the switch 49, then a pulse is emitted by this, which is fed to the pulse generator 31, connects it to the Sohrittmotor 21 and at the same time the scanning device for the information carrier via lines not shown 7 switches on. The switching hook 47 is attached to the switching drum 39 in such a way that that the last element 35b of the element row 35, when the switch 49 is actuated, has just passed the pulse generator 31, d. H. that element 35a is the next Element is that is led past the pulse generator 31. The pulse generator gives As a result, pulses decrease according to the decreasing distance between the elements 35 more and more densely put together and at the end of the row of elements 35, i. H. at the Element 35b, have a distance that corresponds to the hadel distance. 0 In Fig. 3 shows next to the switch 49 the pulse through which the stepper motor 21 with the pulse generator 31.

is connected. After this impulse appears, the impulse generator gives 31 impulses with ever decreasing distance.

At that point of the needle cylinder where the element 95b is attached, is also the switching cam 53. Therefore, if the last Element 35b passes the pulse generator 31, the switch 57 is actuated, whereby the stepping motor 21 is switched from the pulse generator 31 to the clock pulse generator 29 will. The pulses supplied by this, which are shown in FIG. 3, white one to the needle or. Web spacing corresponding distance from each other. The from The switching pulse generated by the switch 57 is also visible in FIG.

The device described avoids that the information carrier after the switch-on pulse (switch 49) appears immediately with the needle cylinder cycle corresponding number of steps must be driven. Instead, he becomes accordingly the arrangement of the elements 35 initially driven very slowly until it finally when the element 35b takes effect, its full speed is reached. By doing Moment in which through the switch 57 of the clock pulse generator 29 to the stepping motor 21 is placed, the information carrier will therefore continue synchronously with the needle cylinder transported. At the same time, the switch 57 can be used to switch on the scanning device will.

After switching to the clock pulse generator 29, the knitting machine through the information carrier via one or more needle cylinder revolutions 7 can be controlled. The number of these revolutions is denoted by n in Fig. 3, When the electronic control switches back to the fixed program should, then the switching cam 45 reaches the switching drum 39 with the switch 51 In engagement, so that it supplies a switching pulse to the pulse generator 33, as a result of which this is applied to the stepping motor 21 instead of the clock pulse generator 29 At the time of switching, the element 37b has just passed the pulse generator 33, eo that the next pulse of this pulse generator caused by the element 37a will. As a result, the from the pulse generator 33 after actuation of the switch 51 emitted impulses become more and more distant from one another, as in Pigo 3 is shown. Since the first elements 37 correspond to the needle spacing Have a distance, the information carrier 7 will shortly after actuation of the switch 51 initially transported at the same speed, but then gradually braked.

At that point on the needle cylinder where the element is located 37b is located, the switching cam 55 is also introduced. When the pulse generator 33 has emitted the last pulse, the switch 59 is actuated, which via the Electronic system 17 blocks the voltage supply to the stepper motor 21 so that the Stepper motor 21 are exactly at the point reached by the last step remain. At the same time, the switch 59 instead of the pulse generator 33 again the pulse generator 31 is placed on the stepping motor 21, so for the next Pressing the switch 49 immediately the pulses generated by the pulse generator 31 again be fed to the stepper motor.

The device just described ensures that the Information carrier, if it is to be stopped, not within a needle cylinder cycle needs to be braked, but that the braking, for example, within half a needle cylinder revolution, aleo during, for example, 840 cycles can be. The speed of the information carrier is then at the end of this period of time so small that this is in the next cycle at a precisely defined point of the needle cylinder, i.e. where the switching cam 55 is located, comes to rest.

In the production of an information carrier that is used during the Striok process should be switched off temporarily; the procedure is such that between two consecutive areas that contain the information for a specific pattern, spaces be attached. These empty spaces wind in the direction of transport of the information carrier as long as the information carrier needs to operate at its operating speed brought to a standstill and brought back up to the operating speed from the standstill When, for example, the rubbing of elements 35 and 37 each half a cylinder revolution are long, then there remains between two areas of the Information carrier always a piece free, that of a full cylinder revolution, that is for example 1680 machine cycles, corresponds to, Therefore, if the knitted goods, for example, twice over 40 rows of stitches each according to a fixed program can be tricked, then two pieces are saved on the information carrier, which each correspond to 39 full courses, a major advantage of the invention This means that by using the additional pulse generators 31 and 33 it can be precisely determined at which needle of the needle cylinder the information carrier comes to a standstill or with which needle it will surely reach its top speed has reached and thus transported phase-locked eynchronously to the needle cylinder wirdO One can therefore hurry precisely those marking @ on the information carrier that must remain free between two information areas.

Another advantage of the invention is that the information carrier drive is not mechanically connected to the needle cylinder 1. As a result, you can use the devices belonging to a large number of circular knitting machines operating at the same time the electronic control in a separate room. All of the electronics which is indicated in Fig. 1 and 2 by the electronic system 17, can in one Control cabinet can be arranged centrally. The circular knitting machines are then with connected to this control cabinet only by a multiple cable.

The invention is not based on in wig. 2 arrangement of the elements shown 35 or 37 and the switching cams 45, 47 and 53, 55 or the switches 49, 51 and 57, 59 restricted.

The arrangement of these parts on the needle cylinder is much more in at the discretion of the designer and can be changed in many ways. In particular the elements 35, 37 need not extend over half a cylinder circumference.

Likewise, the invention is not limited to circular knitting machines, but also extends to circular-border knitting machines, in addition to the needle cylinder and to the cylinder needles also have a ribbed disc and dial needles.

The exemplary embodiment described in FIG. 2 assumes that to generate the normal clock pulses (pulse generator 29) and when accelerating or braking of the information carrier required pulse trains different pulse generators be used; According to further exemplary embodiments, however, the arrangement also be made so that the elements 35 and 37 one behind the other on the same Line are accommodated if only the switching cams 45, 47 and 53, 55 accordingly to be ordered. In this case, in addition to the clock pulse generator, 29 / another pulse generator can be used.

It is also possible to use a single pulse generator 29 to use. In this case, for example, an optical-electrical pulse generator could be used can be used as described in U.S. Patent 3,313,128, which begins with two Riehen cooperates with pulse-generating elements, the distances between which are constant or are gradually increasing or decreasing and depending on the operating state of the knitting machine optiech be scanned

Claims (1)

Claims 1. Circular knitting machine with one or more electronically controllable devices, with a scanning device for scanning an information carrier and to convert the information stored on it into electrical, for Control of the devices mentioned varusable control signals, also with a synchronously to the needle cylinder rotation driven transport device to produce a relative movement between information carrier and abtaeteinrichtung urJd with ein.mit the needle cylinder rotation synchronized pulse generator to generate of clock pulses, characterized in that the transport device (9) mechanically is coupled to a stepper motor (21). the elektrisoh to the pulse generator (29) is connected. 2. Circular knitting machine according to claim 1, characterized in that a device (31 to 59) is provided by means of which the scanning of the information carrier (7) with the needle cylinder (1) rotated at a defined point relative to the needle cylinder (1) Breakable and resumable after an interruption at operating speed is. 3. Circular knitting machine according to claim 2, characterized in that the device (31 to 59) contains at least one pulse generator with the Stepping motor (21) is connected and this to stop the transport device (9) pulses with gradually decreasing repetition frequency to accelerate the Transport device (9) pulses with gradually increasing repetition frequency and to maintain the operating speed of the transport device (9) Supplies clock pulses with constant repetition frequency. 4. Circular knitting machine according to claim 2, characterized in that three rows on the needle cylinder (1). of pulse-generating elements (34,35,37) are provided, which one pulse generator (29, 31, 33) is assigned to each, with one row of elements of elements (54) which are constantly spaced apart in the direction of rotation, the second row of elements from elements (37) gradually spaced apart in the direction of rotation and the third row of elements from gradually a smaller distance in the direction of rotation having elements (35), and the program-controlled switch (49,51,57,59) to connect the stepper motor to one of the three pulse generators (29,31,33) are provided. 50 circular knitting machine according to claim 3 or 4, characterized in that daoa electromagnetically operating pulse generators (29) are provided which the webs (34) of the needle cylinder (1) or located between the cylinder needles Scan corresponding elements attached to the needle cylinder at a preselected distance 0 6th Circular knitting machine according to claim 3 or 4, characterized in that optical-electrical working pulse generators (31,33) are provided in the needle cylinder (1) in Scan slots or holes (35,37) made at a selected distance. 7. Circular knitting machine according to claim 4, characterized in that the pulse generator (29) generating the clock pulses electromagnetic and the two other pulse generator (31,33) works optically-electrically. 8. Circular knitting machine according to claim 6 or 7, characterized in that therefore on an extended part (38,40) of the needle cylinder (1) two rows of Schlltsen (35,37) formed bind, of which dio a series of slots (37) with gradually increasing distance and the other row of slots (35) with gradually decreasing distance consists of 0 90 circular knitting machine according to claim 8, characterized in that that the rows of slots (35,37) each extend over half a needle cylinder circumference. 10. Circular knitting machine according to one of claims 1 to 9, characterized characterized in that it is designed as a round-edged knitting machine.