DE2060942A1 - Method and device for data transmission on knitting machines, in particular flat knitting machines - Google Patents

Description

PATENT ADVOCATE Dipl.-Ing. Rudolf Mobil ·? Π R Π Q Λ 9

741 Reutitngen / WOrib ^{Z υ} ^ ^4ί r. 05 phone

P 1559

Sign in Pirma

Ξ. Stoll &. Co

741 Reutlingen

Stollweg 1.

Method and device for data transmission to Striok machines, especially glaohatrioknaaohinen

The invention relates to a method and a device for transmitting data from an electronic unit Needle control devices wipe one fixed and one moving part of a knitting machine, in particular between the machine body and the carriage of a Flat knitting machine.

In flat knitting machines where electronically controlled Hadelwählsysteee on the moving carriage the machine are arranged, there is the problem of data transfer from a stationary sample program carrier to the moving carriage when you The slide is not affected by the inclusion of the sample program

209826/0295

P 1359 -Ä-

greatly increase the size of the WiIl _9, which would in any case have disadvantages with oioh. An electrical signal transmission via a movable cable causes difficulties in machines with long cadaver beds and makes special cable tensioning and guiding devices necessary. In addition, the drive of the machine slide (s) can be impaired by such cables. Signal transmission via contact rails attached to the machine body and contact brushes or grinders arranged on the machine slide encounters the difficulty that only a limited number of signals can be transmitted in this way and that the signal transmission is very susceptible to interference, because exposed contact parts in knitting machines run the risk of contamination are exposed to fiber fly.

The invention is based on the object of a method while avoiding the technical parts mentioned above and to develop a facility with which a large number of data can be interfered with between the stationary muoter program carrier and the sledge or a driver rigidly connected to it in the driving direction and vice versa can be transferred to a flat knitting machine. The object set is according to the invention solved in that the transmission in one or both directions wirelessly in the carrier frequency method on several independent data cards

209828/0295

P 1359 - 3 -

transmission takes place over a common transmission path. Each needle selection system of the moving machine part, in particular the machine slide, is expediently assigned a separate Dfitenkanal! Via which synchronization signals assigned to the relevant system are transmitted from the needle selection system to the address input of a fixed data memory assigned to it, and each needle selection system is expediently assigned an additional data channel. Via which it receives the control signals assigned to it over the same wireless transmission path from the stationary data memory ™ which is remote from the slide. The control signals for all needle selection systems can also be transmitted wirelessly to the slide via a common data channel, with the separately transmitted synchronization signals controlling the assignment of the control signals transmitted to the slide to the individual needle selection systems. The term carriage is understood here not only to mean the moving lock carrier of the flat knitting machine, but also the driver rigidly connected to it in the direction of movement. Aue, for reasons of easier dismantling of the slide, the electronic parts of the device on the slide side can be arranged on the driver. äk

The method according to the invention can be with a Carry out setup in which the carriage of the flat knitting machine has one for each needle selection system Has synchronizing pulse generator, the pulses of which are carrier-frequency modulated via a transmitter via the common wireless transmission path to a separate,

2 0 982 6/0295

P 1559 - 4 -

fixed receivers coupled with a filter stage and a demodulator. This Receiver is connected to an address input of a data memory. The data memory is on the output side with a stationary transmitter but carrier-frequency-modulated transmission of a control pulse via the wireless transmission path connected to a receiver of the carriage, and that with a filter stage and a receiver of the carriage provided with a demodulator is in turn connected to the associated needle dialing system.

The data memory is expediently used as an intermediate memory and made up of shift registers, with a row of shift registers for each needle selection system with separate data input, separate address input and separate output * In this case, in each row of shift registers stores the information for an additional open needle selection system for the total number of needles in a carriage direction. The rows of shift registers are synchronized with the synchronization pulses emitted by the slide by shifting and The signal content is transmitted from its outputs via the stationary transmitter to the carriage and the associated needle dialing systems are emptied. While the current register memory is being emptied in the course of a sole path, a second current register memory can be used from a collective information memory with the information

209826/0295

P 1359 - 5 -

mations for the closest slide path, for example the slide return path, are filled, and this second shift register memory is switched on during carriage reversal. During the following slide path, the first viewing register memory can then also the information for the following row of pockets can be filled.

With a method and a device according to the invention, several individual signals can be used in both Safe transmission of directions with a sufficient carrier frequency spacing, so that, for example, eight and more Nadelwählsysterae with separate information Can be supplied via a single wireless transmission street, depending on the level of the selected Carrier frequency between one on the machine body arranged induction loop or an antenna and a magnetic or electrical ground probe arranged on the slide. The fields that transmit signals are also in the event of a strong flight the induction loop or the antenna is not or only insignificantly influenced, so that with the selected system very secure data transmission is guaranteed.

The invention is described below with reference to the enclosed Drawing explained in more detail.

Show in detail

209826/0295

P 1359 - 6 -

1 shows a first embodiment of a device according to the invention in a block diagram;

Fig. 2 shows a second embodiment of a device according to the invention, also in Block diagram.

In Fig.1 is the carriage of a flat knitting machine symbolically represented by a box 10 formed from dash-dotted lines. In this box the parts of the data transmission device arranged on the slide are shown. Outside of of the Kaatena 10 are those on the stationary body of the flat knitting machine or elsewhere arranged parts of the device shown. In the case of the flat knitting machine, for example be a machine with a slide and eight different Hadelwählsysteatn arranged on this slide. These Hadelwählsysttme can be operated electromagnetically, for example, and are on pronounced points of the mechanical lock carried by the carriage, where they are arranged accordingly their position determine whether a needle should, for example, knit, catch, be transferred or be left in the rest position. Each of these eight needle selection systems is equipped with its own synchronous pulse generator that

209826/0295

P 1559-7- "■

Lent parts of the load-digging system arranged by a pitch, that is, the distance between two successive needles, emits a synchronizing pulse. In the block diagram of FIG. 1, these eight sync pulse generators are represented by a common box 11 with eight output lines 12. The eight output lines of the Synohronimpulsgeber are connected to eight inputs of a mounted on the carriage transmitter 13 'of the holds a separate carrier frequency band for each of the eight signal inputs, W to which an incoming sync pulse is modulated and an output 14 of the transmitter is applied to a field probe 15 through. The field probe 15, which is moved along with the carriage 10, serves both to transmit and to receive carrier-frequency-modulated pulses. It moves at a distance along a wire loop 16, which is arranged on the body of the flat knitting machine (not shown) and which forms the other end of the wireless signal transmission path between the carriage 10 and the stationary part of the device.

A receiver 17, which is coupled to a filter stage and a demodulator and which is connected to the field probe 15 via a line 18, is also arranged on the slide. From this recipient the to ^; the probe 15 received, emitted by the stationary part of the ^device: modulated or modulated

209826/0295

P 1359 - 8 -

Receive, filter and demodulate carrier frequency pulses and according to their carrier frequency band a specific line of the eight output lines 19 of the recipient 17 given. Any of the output lines

19 is connected to one of the eight needle selection systems, diC in the drawing by a common box

20 are symbolized. So the electoral systems will be a Dialing pulse transmitted from the stationary part of the facility directly or via an amplifier and pulse shaping unit in a known embodiment forwarded.

The stationary part of the facility has a reception area

21, the input of which is connected to the wire loop 16, and which, similar to the receiver 17 on the slide, is coupled to a demodulator and has eight output lines 22, each of which has a specific carrier frequency or a carrier frequency band and thus one of the eight needle dialing systems of the machine assigned 1st. The eight outputs 22 are connected to the eight address inputs of a buffer memory 23 which is made up of eight rows of shift registers, each row of shift registers being assigned to a needle selection system. The information ⁿ needle selection ⁿ , "no needle ^{selection 11} for each row of stitches or a carriage path is stored in the eight rows of shift registers. The intermediate memory 23 can be, for example,

- 9 -

209826/0295

P 1559-9-

wise from eight flip / flop memory rows with, for example There are a thousand spears each, if the flat knitting machine, for example, a thousand needles wearing. With every movement of the carriage by one needle step, i.e. a continuous adjustment of the carriage by the distance between two needles, is on every needle dial system generates a sync pulse, the shift register row of the Zwi- j | assigned to it Page memory 25 moved one step further, Dem- ,, correspondingly occurs at the output line 24 with every movement of the carriage by one needle step * Output pulse dier no output pulse on the output line 24 of the relevant register row of the buffer 25, depending on whether at the memory location arriving at the end of the shift register row L-Signsl or an O-Signal is stored. The eight Output lines 27 of the buffer 25 are connected to eight inputs of a transmitter 25, which like the Sender 15 on the slide has a different one for each input Srager frequency band on which the incoming impulses are modulated and via the selection output lines 26 are given to the conductor loop 16. However, an L signal could also simply be generated by the Transmission of an unmodulated carrier frequency pulse are displayed.

The buffer 25 is designed so that it the Nadelwählinformatiotien for all needle selection systems for

■ - 10 - ■

209826/0295

P 1359 - 10 -

Contains a slide path. The facility has a second buffer memory 23a, which alternates with the buffer 23 is used and that during the use of the buffer 23 in not shown Way from a collective store, for example a tape store, with the handle selection information for the next slide stroke, i.e. the next row of machines on a single-system flat knitting machine, is filled.

The circuit according to Fig.2 differs from that Circuit according to Fig.1 through the design of the transmitter and recipient. The circuit parts are marked with the same reference numbers plus a dash.

With this device, the synchronizing pulses generated in the synchronizing pulse 11 * of the individual hand-dialing systems, which appear at the outputs 12 ^f , are used to set an exit switch in the receiver 17 'arranged on the carriage 10 *, which ensures that only one specific and output 19 * assigned to a specific hand-dialing system 20 * is released for the next bathing-dialing signal arriving via input line 18 * tm receiver, while all other output lines 19 'are blocked. By this method, the transmitter 25 * masohinenkOrperseitigen the device sur a single carrier frequency is required, with which all of arriving at the input of the transmitter signals on the

- 11 -

209826/0295

P 1359 - 11 -

Le it he loop β 16 * can be given to emit. However, the device requires a synchronous sequence of the synchronizing pulse signals, so that with these arriving at the receiver 21 on the machine body side Synchronization pulses a signal assignment stage 27 can be controlled precisely, with which only an output 24 * of the buffer 23 * or 23a is connected to the transmitter 25 '. With eight I-dialing systems In a device according to FIG. 2, only nine different carrier frequency bands are therefore required. However, the prerequisite for proper functioning of the facility is that the eight synchronous' The pulses of the synchronous pulse generator do not overlap in time.

The invention can be modified in various ways. For example, the wireless transmission link could also be divided into several individual transmission links that are shielded from each other. This embodiment could be used in flat knitting machines with two or more needle beds.

Sound from a buffer can also be used by several synchronously running transmitters via a common stationary transmitter Machines can be controlled at the same time.

- 12 -

209826/029 5

Claims (1)

P 1359 - 12 - P atg η t _Mi a nsprüche rU Method for the transmission of data from an electronic needle control device between a fixed and a moving part of a knitting machine, in particular between the machine body and the slide of a flat knitting machine, characterized in that the transmission in one or both directions is wireless using the carrier frequency method on several independent data channels takes place via a common transmission link. 2. The method according to claim 1, characterized in that each needle selection system (20) of the moving machine part is assigned a separate data channel, via which the synchronization signals assigned to the system in question are transmitted from the Hadel selection system to the address input of a fixed data memory assigned to it, and that each needle selection system (20) is assigned an additional data channel via which it receives the control signals assigned to it from a fixed data memory (23) via the same wireless transmission link. - 13 - 209826/0295 P 1559 - 13 - 3. The method according to claim 1 and claim 2, characterized in that the control signals for eämtli ~ before needle selection systems (20 *) are transmitted wirelessly to the moving machine part (10 *) via a common data channel, and the separately transmitted synchronization signals the assignment of the to the moving machine part control signals transmitted on a one Hadelwählsysteme (20 ") jm control (Figure 2). 4 · Facility for carrying out the procedure according to One of claims 1 to 3 for a flat knitting machine, characterized in that the carriage (10) has one for each needle selection system (20) Has synchronization pulse generator (11), the pulses of which via a transmitter (13) carrier frequency modulated via the common wireless transmission ~ route to a separate, stationary, coupled with a filter stage and a demodulator Receivers (21) are transmitted and that the receiver (21) with an address input of a data w Memory (23) is connected « 5 «device according to claim 4» marked daduroh, that a signal output (24) of the data memory (23, 23a) with a stationary transmitter (25) for the carrier-frequency-modulated transmission of a control pulse see about the wireless transmission route on one - 14 - 209826/0295 P 1359 - Η - Receiver (17) of the carriage (10) is connected, and that with a filter stage and a Demodulator provided sap catcher (17) of the carriage (10) with an associated needle selection system connected is. 6. Device according to claim 4 and claim 5, characterized in that the stationary transmitter (23 *) works with a single carrier frequency for all control signals, and that the carriage-side receiver (17 ¹ ) via one of the transmitters (11 *) of the carriage (10 *) controlled signal assignment stage (27) with all needle selection systems (20 ') is connected (Fig.2). 7. Device according to one of claims 4 to 6, characterized in that the data memory (23,23a) is designed as a shift register store, which has a shift register row with a separate control input (22) for each needle selection system, has a separate data input and a separate output (24), and that in each row of registers only contains the information for the total number of needles in a carriage direction. 8. Device according to claim 7, characterized in that that two alternately connectable data memories (23 »23a) are provided, of which the - 15 - 209826/0295 "P 1550 '- 15 - One · can be filled with new information from a Samel information store, while the other is emptied over a Sohlittenweg. 9 * Device according to one of claims 4 to 8, characterized characterized in that the wireless transmission Streoke swish one on the nasal body arranged induction loop (16) or antenna and a magnetic or electric field probe (15) arranged on the slide. 10. Device according to one of Claims 4 to 9, characterized in that the slide sides electronic! Heile arranged on a carriage driver that is rigidly coupled to the carriage are. 209826/0295 Le first page