DE3033857A1 - DEVICE FOR CONTROLLING THE NEEDLE SELECTION IN ROUND KNITTING MACHINES, ESPECIALLY IN MACHINES FOR THE PRODUCTION OF STOCKINGS, FOR THE FORMATION OF JACQUARD AND LEFT-LEFT PATTERNS - Google Patents

Description

Device for controlling the needle selection in circular knitting machines, especially in machines for the production of hosiery, for the formation of jacquard and left-left patterns

The invention relates to a device of the type described in the preamble of claim 1.

The invention is based on the object of such a device so that it can be used for the production of Samples of textile samples and thus for production of work programs for the knitting machines. The device according to the invention, which with electromechanical Converters and electronic systems should be simple and far-reaching possibilities offer to vary the shape and dimensions of jacquard and left-left patterns.

According to the invention, this is achieved by a device with the claims 1 achieved features described.

Advantageous refinements and developments of the device according to the invention are the subject of the subclaims, Express reference is hereby made to shorten the description.

In the following the invention is based on the drawings explained in more detail:

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1A and 1B show block diagrams of the two control systems parts, one of which is attached directly to the or on each knitting machine, while the other is arranged separately from the machine (s),

Fig. 2 shows a device for generating needle signals,

Fig. 3 shows a device for generating the needle control signals per needle cylinder revolution and for generating commands and release signals,

Fig. 4 shows the components of the pin matrix, Figs. 5 and 6 show details of the pin matrix.

The control unit consists of two complexes, called control part A and control part B. Control part A is attached directly to the or each knitting machine, while control part B is separate from the or the Knitting machines arranged and for performing the operations described below when entering a Sample and when checking the result on a sample for short periods of time via electrical cables can be connected to a machine.

The individual components are shown schematically in the form of circuit blocks in FIGS. 1A and 1B.

In the illustration according to FIGS. 1 and 2, the needle cylinder denoted by 1 is equipped with an electromechanical needle selection device 2 combined, which acts on the feet of the needle pusher. The corresponding control commands are fed via a line 3, which is from a power amplifier 4 goes out. The power amplifier 4 is controlled by a decoder 5, the height of the Needle jack feet decoded. The corresponding information is the decoder 5 alternatively - via a Switch SW2 - either from a memory reader 6 or directly from that of the knitting machine

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separate control part B supplied. In to the control part B line 110, a data receiver 8 and a corresponding pulse shaper 10 are inserted.

With 12 a device for receiving sync signals is referred to. It includes a needle disk 14 and a zero disk 16. The disks 14 and 16 are provided with incisions that correspond to the needles, or with a single incision that defines an angular reference point. Work with disks 14 and 16 optical sensors 14A and 16A and corresponding input circuits 14B and 16b of symmetrical lines 14C and 16C together. These lines lead to line receivers 18 and 20 and synchronizing signal formers 22 and 24 to the decoder 5 and the memory reading device 6. With 26, a power supply is designated, one of which Feed line 28 lead to the power amplifier 4 and a feed line 30 to the electronic circuits.

In the connection, designated 32, between the decoder 5 and the power amplifier 6, a preselector 34 is inserted, by means of which the device differentiated liche machine types depending on their degree of fineness and the diameter of the needle cylinder and thus in Depending on the number of different levels of the needle jack can be adjusted.

The control part B, which is separate from the machine and which is also referred to below as the "control table", comprises a pen matrix 101 which forms the basic component for inputting a pattern. At 102 are recipients for denotes balanced lines 14C and 16C. With 103 two signal formers are referred to, which of the Device 12 generated synchronizing signals transform when the control part B is connected to the machine. At 104 is a pulse shaping circuit called the clock

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signal for writing the memory. The circuit also includes a counter and decoder 105 for the rows and a counter 106 for the columns. The latter is with a decoder 107 for the columns combined. The information from the decoder 105 is fed to the pin matrix 101 via the lines 205 Information, the matrix 101 is with the lines 207 via the decoder 107 of a writing device 108 for the memory and input circuits 109 of a symmetrical data line 110 supplied, via which it to the switch SW2 (Fig. 1A) and thus to the line receiver 8 of the control part A of the machine. 111 with a supply circuit is designated. A reset line for the columns for changing the column width is designated by 112. At 113 there is one Reset line for the rows to change the row width. With 114A there is a breaker switch for writing into the memories, designated 114B and 114C are toggle switches which are used to switch between those of the device 12 and those of the Clock generator 104 generated clock signals are used.

In Fig. 2 is from the parts 14, 14A, 14B. 18 and 21 existing device of Fig. 1A in more detail shown. At 314 is a line input circuit (Line driver). At 414 a line receiver is designated. That of the essentially The synchronizing signal generated as a monostable multivibrator device 22 is symbolically denoted by 322.

Fig. 3 shows a further embodiment of the device for generating the synchronizing signals as well as the others Instructions that are fed to a device designated 500, in which, among other things, the memory reading device for the memory 6 and the power amplifier 4 are included .. With 502 and 504 are circuits

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for the generation of exclusion signals, which the command signals during the alternating movement of the needle cylinder as well as at the end of each production cycle suppress for a product. They also generate a signal by means of which the system for a suitable Delay time is started before the inputted pattern is executed. During the said delay At the time, for example, a border or a falcon is made.

4 shows the circuit complex combined with the pin matrix 101 as a block diagram. The structure of the Pin matrix 101 is shown in more detail in FIGS. The circuit block 601 in FIG. 4 represents an up / down counter with a decoder for the row signals 603 and 605 are supplied with the clock signals of the needles and the cylinder rotation, respectively. A switch SW4 is used for switching the mode of operation from point-by-point scanning to quick reset. A signal is used for selection, that starts from the first row labeled RX and that in the monostable multivibrator 110 or the downstream bistable flip-flop circuit 109 is converted in a suitable manner. The circuit block 611 At least includes a forward-backward counter as well a corresponding decoder for scanning the Columns. A switch SW5 is used to switch the operating mode from a point-by-point. Scanning on a fast le provision. The corresponding control signal comes from the first column labeled RX and is transferred a bistable multivibrator 613 or a monostable multivibrator 615 out. One installed in the RX series Pin 617 as well as a pin 619 attached in column RY allow the dimensions in this way of the pattern in the X and Y directions.

5 shows a diagram of the matrix 101 with electronic

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Symbols. In Fig. 6, the structure is that known per se Matrix indicated, which can be used for the present purpose. Such a matrix is, for example on the market under the trade name SELECTRO. In the schematic representation, the perforated plate is the matrix designated 701. With 703 and 705 the linear transversal and vertical contact pieces are designated, which can be bridged with pins 707 at the crossing points. These 707 pins are equipped with 707D diodes.

The operation of the device is explained in more detail below:

The operator enters the desired pattern on the pen matrix 101 with the aid of the pens 707 and connects control table B using switches 11AA, 114B, 114C and SW2 with the machine. In this operating state the machine is controlled from the control table B, to which the synchronizing signals from the device 12 of Machine itself.

The operator first presents test pieces with the desired pattern and takes the required ones from this Improvements.

When the pattern has the desired shape, the control table is separated from the machine. The switches 114 are placed in such a position that the data of the pattern with the desired properties - those in the matrix 101 were entered - entered into a programmable read-only memory (PROM). For registered mail is used by the writing device 108 (FIG. 1B).

The memory content of the programmable read-only memory can then be combined with all information relating to the pattern be transferred to the memory reading device 6

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the one located on the machine (Fig. 1A). After the switch SW2 in the opposite switch position was brought, the mentioned information for the execution of the pattern can directly from the memory reading device 6 are transferred to the actuators. Saving and transferring the contents of the memory can be repeated several times to prepare several machines.

The electronic device is used in the preparation of a program as well as in the production of a program activated in the control part A assigned to the machine by signals received from the machine in question will. The specific signals are as follows: One generated by complex 14, 14A and 14B Signal for each needle; a signal generated by complex 16, 16A and 16B for each revolution; an exclusion signal for the control commands during the phases with alternating movement; an exclusion signal for the Deactivation of the system at the end of each cycle, which also includes the restart of the system after one with the beginning of a new cycle 'starting delay time (during which, for example, the border of a stocking is created is effected).

The first-mentioned signals are generated by the disk 14, the number of teeth of which corresponds to the number of needles and which acts on the optical sensor element 14A Output signals from this sensor element 14A are obtained from the elements via the method described with reference to FIGS. 1 and 2 14A, 314, 414, 22, 14B and 14C transfer existing circuitry to the control circuits.

The second-mentioned signals are generated by the disc 16, which has only one incision and consequently supplies a control command with each revolution. The electronic circuits for transmission and signaling

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formation are similar and consist of the parts 16A, 16B and 16C.

The latter two types of signals are used with the help of generated by microswitches 502 and 504 that are on the machine are arranged. These signals are fed to the system through circuitry similar to those described above Circuits are similar to those of monostable Kipp stages 506, 507 and 508 (Fig. 3) formed control circuit gen belong.

On the pen matrix 101, the pens are set in a manner which corresponds to the pattern to be executed. Included Each pin represents a mesh. The dimensions the matrix (number of columns X and rows Y) are limited by means of pins 617 and 619. This limitation takes place exclusively for operational reasons. In total, M rows and N columns can be in any Take advantage of selection. The electronic circuits carry out the various scanning functions of the matrix, the synchronization and the shifting of the control commands to the different levels of the needle selection device the end.

Before entering the actual pattern, its dimensions are determined by inserting the two pins 617 and 619 (Fig. 4) in the corresponding row RX and column RY of the matrix.

In the zone delimited in this way, the pins 707 are used to form the desired pattern.

When making a sock with a cuff, patterned area, heel, partially patterned foot part and Tip is done as follows: When the machine starts up (Fig. 3) - during the production of the envelope part - no pattern carried out until the monostatic

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bile flip-flop 5Ο6 supplies an enable signal. Afterward begins the pattern that is interrupted at the heel by the activation of the monostable toggle stage 508. The pattern begins anew in the foot part until the bistable flip-flop 507 generates a corresponding signal, which interrupts the pattern until the start of a new cycle.

With each passing needle, the scanning proceeds - controlled by the signals supplied by the disk 14 - by one step in the X direction. With each rotation signal (supplied by the disk 16 the scanning continues by one step in the Y direction. As soon as the corresponding to pin 617 or pin 619 Position that delimits the pattern area is reached in the X or Y direction, a scanning cycle ends, and a new one begins (reset).

By actuating the relevant control switch SW4 or SW5 (Fig. 4) there is also the possibility of "mirroring" on one and / or the other coordinate axis to work. When the position of the pen (s) is reached that shows the pattern in X- or Y- or limit in both directions, in this case the scanning of the matrix does not start again in the one described above Wise at zero, but it reverses its sense of direction and steps in the X and / or Y direction to the beginning of the row and / or column backwards. In this case, the scans are "pendular".

It is also possible to move the pattern in the X direction to extend, in particular to double, by the clock signals supplied by the disk 14, the increment the counter assigned to the rows, divided by 2. The pattern can also be used in the Y direction extended, for example doubled, quadrupled or multiplied by 8, 16,32 ... One achieves this by having the clock signals that the columns

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Advance assigned counter, dividing by the corresponding numbers. These possibilities can be passed through Act on the corresponding control elements located on the control panel of the matrix.

By choosing the direct or the negated data output, the patterns can be executed as positives or negatives (as desired by the operator). The data output of the matrix can also be suppressed and fixed data (supplied by the clock disk 14) can be fed in. In this way, a “rice-grain-like ¹¹ base” is obtained. No pins need to be inserted into the matrix.

It is also possible to electrically connect the data output of the matrix and the data corresponding to the rice grain-like base to combine. In this way you get a background for the pattern that is not smooth but like a grain of rice is.

All these possibilities can be noted in the memories and in this way entered into the memory reading device of the machine without using the control table B to help.

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Claims (5)

Claims Device for controlling the needle selection in circular knitting machines, especially for the production of hosiery, for Formation of jacquard and left-left patterns with electromechanical transducers marked by a with the or each knitting machine combined first control part and one that can be connected to this first control part and a second control part that can be separated from it, - The first control part comprises the following parts - a transducer for forming the passage Synchronous signals corresponding to the needles or an angular reference mark, - A memory reading device, which alternatively responds to the synchronous signals supplied by said signal shaper or responds to signals supplied by the second control part, - a decoder, - as well as a power amplifier, - And where the second control part um-. grasps - a pen matrix for composing the pattern, - counters and decoders for the matrix rows and columns, - A timer device (clock generator) as an alternative to that contained in the first control part Signal conditioner for the formation of the synchronous signals becomes effective, A memory writing device for receiving the information from the pen matrix - as well as means of transmission for the transmission of this information alternatively either to the aforementioned memory writing device as the basis for the Storage or directly to the decoder of the first control part for direct action on the Machine in the production of sample specimens, 130016/0 66 β
ORlGlMAl. whereby the manufacture of products is based on the stored information with the aid of the first control part is possible alone. 2. Apparatus according to claim 1, characterized in that a horizontal row and a vertical column counting devices are assigned to the pin matrix, which interact with a pin that can be inserted into a seat of the matrix row and the matrix column in such a way that that the scanning of the matrix in both coordinate directions and thus the extent of the pattern field is arbitrary is limited. 3. Apparatus according to claim 1 or 2, characterized in that switching means are provided by which the scans in the row and / or column direction can be switched between two operating modes, in which the scans are always in one sense of direction (with reset) or to produce mirror symmetry Patterns take place alternately with an alternating sense of direction. 4. Apparatus according to one of the preceding claims, characterized in that switching means are provided are, through which the information stored in the matrix or the memory for the expansion of a Patterns are repeatable in one or two directions. 5. Device according to one of the preceding claims, characterized in that means are provided by which the device during the production of a predetermined amount of the product, i.e. during one predetermined range of a work cycle of the knitting machine can be switched on. 13 0016/0656