CS209418B2 - Method of dying porous material a device for executing the same - Google Patents

Abstract

The work is carried out with at least one row of dye nozzles which extends transversely to the direction of movement of the sheet-like textile structure, which can be a web of carpet material, pressurised jets of dye liquor issuing continuously from the dye nozzles. Each jet of dye liquor is directed either onto the sheet-like structure or away from this according to the pattern to be produced and according to the speed of movement of the sheet-like textile structure. By means of data blocks with pattern data, the selective deflection of each of the jets of dye liquor within successive cycles is controlled. Each cycle is initiated by the movement of the sheet-like textile structure over a distance corresponding to the pattern fineness. Within each cycle, the directing of each jet of dye liquor onto the sheet-like textile structure takes place only during a predetermined time interval which is followed by a rest time. During this rest time, which is at least as long as the recovery time of the dye-liquor jet deflection device composed of the air-supply lines (62) and of the solenoid valves (64), all the jets of dye liquor are directed away from the sheet-like textile structure. The proposed spray-printing process is also suitable for the printing of fine or complicated patterns. <IMAGE>

Description

BACKGROUND OF THE INVENTION The present invention relates to the patterned application of dyes to porous textile materials, in particular patterned dyeing of textile hair products such as carpets.

Textile fibers - and textile materials have long been dyed with natural and synthetic synthetic dyes and, in particular, have been printed - by color-decorating the surface or surfaces of materials with precisely-repeated shapes and colors to form a sample. Such color printing of textile products is achieved by hand printing, cylindrical printing and film printing.

In the - most recent - it has been proposed to print textile - including hair - carpets by programmed spraying or blasting - bright dyes on the surface of - moving products, such as - described in patents - United States of America - No. 3,443 -878 -a No. 3 -570275 and - in British Patent 978 452.

Generally, such a device consists of a series of dye applicator bars or tubes separated - in the direction of movement of the textile material - and each comprises segmented dye nozzles interspersed - across - the moving material. -Each nozzle can be activated by a suitable - electric, pneumatic or mechanical means to divide the dyes into moving - material - and the sample control for using the dyes in the desired range 2 can be supplemented by various conventional - programming devices such as - mechanical-discs and drums,. -coded .. punched tapes, -magnetic - tapes .a - computers.

U.S. Patents 3,433,878 -and -3,572,075 dyes that are deflected by a jet of air or mechanical delamination to provide a dye stream impact on the product or recirculation to the dye supply hopper.

) is highly desirable. The ability - to obtain very detailed, sharp - and complicated lacquer specimens - as - can be obtained by conventional weaving processes - using - multiple yarn colors - as in -axminster or weaving weaving processes. Thus, in the pattern dyeing of hair products, it is particularly important to precisely deposit - the dye in a precise amount - onto the hair yarn of the product.

It is desirable to use - in a rather small amount - to dye the single yarn or tuft of fibers or the corresponding region without undesirable - wicking - or - migration into adjacent tufts of pile fibers. Then, of course, the accuracy of the amount and placement of the dye - on the hair product - becomes considerably - important - in dyeing hair products - complex patterns.

Certain factors can have a detrimental effect on the precise placement of hair dyes. The speed of movement of the product must be carefully in accordance with the application of the dyes. When the speed of the dye stream changes with respect to the movement of the carpet to which it is applied, unwanted tinting and inaccurate placement problems arise.

To minimize such problems, the present invention provides a method of dyeing a textile material to obtain a specific pattern wherein the material moves relative to a series of dye-emitting apertures extending transversely to the material movement, the liquid dye stream being continuously discharged from each aperture and selectively controlled . and the material in accordance with the pattern to be applied to the material, wherein the selected direction of dye streams is governed by the patterns of pattern data during repetitive cycles, each cycle being invoked in accordance with the movement of the material through a predetermined cycle. a predetermined distance, wherein all dye streams are capable of being directed to the material in each cycle during a predetermined period of time, the streams are directed in accordance with the sample data during each period of time, and a rest period is maintained within each cycle during which all dye streams in a row, direct the material.

In this way, a given area of the article is dyed by repeated intermittent dye deposition instead of an uninterrupted continuous flow of dye stream across the area. For example, if it is desired to apply a continuous solid dye line along the length of the article below a single dye stream, the stream does not impact the product continuously along the line length, but instead dye is applied in separate increments by periodic biases of the stream correlated with product movement. This ensures much more precise control of the amount of dyes that can be deposited on the article and also minimizes the risk of improper dye placement due to possible irregular movement of the carpet during dye deposition to a specified area of the article.

As a further aid for placing accurate amounts of dye on the hair carpet, the advantages of embodiments of the present invention provide means for applying streams to the article for selectively variable time periods within said time period from each cycle, thereby allowing the amount of dye · applied from each beam is independently controllable for achieving complex tinting and / or _optionally, in situ "by mixing dyes of various spray bars.

The invention also relates to an apparatus for carrying out the method of the above, comprising a conveyor for moving the material at at least one row of apertures arranged transversely adjacent to the conveyor, means for pumping liquid dye in continuous streams out of the apertures; dye streams outside the conveyor-carrying material, a conveyor-sensitive recording device to provide timing signals determining sequential processing cycles corresponding to increments from conveyor movement, an exemplary control device operable to selectively control the deflection means in accordance with programmed data to retain selected dye streams impinge on the material during one or more periods of time within each cycle, and a timing means determining the duration of each said period of time The period is less than the cycle time and determined independently of any changes in the cycle time.

BRIEF DESCRIPTION OF THE DRAWINGS The invention is illustrated by the accompanying drawings, which show an exemplary embodiment of the invention, by way of example and in which: FIG. 1 is a schematic side view of a jet dyeing and textile printing apparatus; Fig. 3 is a schematic side view of the nozzle dye applicator section shown in Fig. 2, showing only a single nozzle blasting rod; Fig. 4 is a more detailed perspective view of the blasting rod shown in Fig. 3 and illustrating its practical attachment to the dye delivery system; Fig. 5 is an enlarged schematic cross-sectional view of the spray gun of Fig. 4; Fig. 6 is a timing diagram showing the sequence of triggering dye streams onto the pile material to be dyed; Fig. 7 is a block diagram of the electronic registration system; 8 is a block diagram of the device for FIG. 9 is a block diagram of the main block panel of FIG. 8, FIG. 11 is a block diagram of the splitter of FIG. 8, FIG. 12 is a block diagram of FIG. and Fig. 13 is a block diagram of a circuit for controlling the distribution cycle action.

Giant. 1 shows a jet printing apparatus for exemplary coloring of carpet plates. The apparatus consists of a feed table 10 from which the carpet plates are transferred to the lower ends of the inclined conveyor 12 of the nozzle applicator section 14. wherein the plates are suitably printed by programmed processing with a series of jet blasting rods generally designated 16 that inject jets of dye or other liquid when needed on the hair surface of the plates during passage thereof. The patterned plates leaving the applicator section are carried by a conveyor 18, 20 driven by the motors 22, 24 to the steam chamber 26 where it is secured.

The dyed plates leaving the steam chamber 26 are guided through a water scrubber 28 to remove unacceptable dye residues and then pass through a hot air dryer 30 to a collection table 32 where the dried plates are stacked.

Typically, the conveyor system can be used to transport other materials such as continuous or wide woven hair mats for dyeing, while providing conventional inlet and take-up windings.

Details of the apparatus are shown in Figures 2 to 5. Figure 2 is an enlarged schematic plan view of the nozzle applicator section 14 of Figure 1 and illustrates an endless conveyor 12 whose support chains and sprockets (not shown) are suitably supported for movement on the rotatable shafts 34, 36, of which one shaft 36 is driven by a motor 38. To print carpet, rectangular or square-shaped plates, the surface of the conveyor 12 is provided with a series of separating bars or spacers 40 that precisely place the plates separately from each other on the support bars of the conveyor.

As the conveyor moves, the plates pass successively adjacent and below substantially the same blast bars 16, of which five, 42 to 50, are shown schematically, distributed along the conveyor path as they extend over its overall width.

As best seen in Figures 3 and 4, which show only one spray bar 42 to keep track of, each spray bar of substantially identical construction includes a plurality of individual nozzle apertures 52 arranged along the bar and configured to direct dyes in narrow streams or dye nozzle towards to the surface of the pile carpet as these pass through.

Each blasting rod comprises a dye supply manifold 54 (FIG. 5) connected to the nozzle apertures 52 and which is supplied with liquid dye from a separate dye reservoir 56. The pump 58 delivers the liquid dye from the pressurized container 56 to the manifold 54 and the nozzle orifices 52. During processing, the liquid dye is forced continuously in small streams or nozzles from the orifices 52 to the print material.

Arranged adjacent and perpendicular to the outlet of each nozzle orifice is the outlet 61 of the air supply pipe 62 [FIG. 5), each connected to a separate solenoid valve 64 (FIG. 4).

The solenoid valves are supplied with air from the air compressor 66. Although the valves for each blast rod are shown in Figures 2 and 3 as one valve symbol 64, for clarity, the solenoid valve and the individual air supply tubes are provided for each valve bore of each blast rod. such that the individual dye streams can be individually controlled. The valve is controlled by an exemplary control device or mechanism 68 for regularly providing air streams for impinging against continuously flowing dye streams and deflecting them into a trap or tank 95 from which the dye is recirculated through duct 95 and into reservoir 56.

The pattern control device 68 includes a digital switching device with a magnetic device for advancing the tape to accommodate the pattern information. Generally, for printing repeating samples, the magnetic tape may be provided with a repeating sequence of information that is transmitted to the soleid valves until the desired number of plates is printed. In this case, a series of 10 plates (5 pairs) can be placed separately to each other on the conveyor belt and the pattern control device is initially activated as the front edge of the first plate appears below the first spray bar 42. Information from the magnetic tape and switchgear is it then causes the solenoid valves to be opened and closed.

Each solenoid valve is normally open to supply air streams for impact against continuously flowing dye streams and their deflection, all at once into the blast tank tank for circulation.

As the first pair of plates passes under the first blasting rod, the pattern control device is actuated, some of the normally open valves are closed so that the corresponding dye streams do not deflect but fall directly onto the textile material.

Thus, by switching the solenoid air valves on and off in the desired sequence, a printed dye pattern is formed on the textile material during its passage.

During continued use of the dyeing device, the speed of the conveyor conveying the textile materials may change slightly or its position may otherwise change, allowing the pattern applied to the plates to be offset with the material to be printed.

Means are provided for correlating the position of the conveyor to the point of triggering signals from the exemplary device 68 to the relief valves. As detailed in FIGS. 2 and 3, the control system includes a synchronization switch 70, a transducer 72, and an electronic registration system 74. The switch 70 periodically engages a mechanical thumb thumb 76 mounted to the edge of the conveyor 12 while the transducer 72 is operatively connected to the shaft 36. for converting the mechanical movement of the conveyor into electrical pulses occurring namely every millimeter.

As best shown in FIG. 2, a transducer 72, which may be of a mechanical, optical or electromagnetic type, is mechanically coupled to the shaft 36 of the transmission 78 to transmit the desired number of pulses per centimeter of conveyor path. In this case, the converter 72 is connected to transmit 10 electrical pulses per centimeter of path.

The signals from the transducer 72 pass through the electronic registration system 74 to the pattern control device 68 as the conveyor moves the plates around the blast bars. The signals are directed to trigger the individual streams of the blasting rod onto the pile material only when the material is moved to a predetermined, preselected distance relative to the positions of the spray bar.

For example, when a tufted tufted hair carpet having a row of 2.5 mm loop spacing in both the longitudinal and transverse directions is desired, the spray bar hole pitch would be 2.5 mm and the signal recording system for activation of the exemplary control device would be adapted for four commands per centimeter of conveyor path.

During the corresponding time interval

2.5 mm of the conveyor path, the exemplary control device has means for applying dye streams to the hair product for selected periods of time.

As best illustrated by the timeline in FIG. 6, then, when the exemplary device has received a command E from the registration system 74, it is adapted to send a command signal to close selected air valves and apply dye from corresponding dye streams to the pile carpet. The time for which any one air valve can remain closed (with no deflection air being supplied to the dye stream) can be varied within the time period by a suitable means, such as an analog or digital timer.

The duration of the active time period T at which the selected valves may be actuated is fixed at the start of the operation and is uniform at each time interval I, although time intervals I may vary. In selecting the time period in which the exemplary control device can send command signals to the valves of any spray bar, the best time period that can be selected is shorter than the shortest time interval I that can be expected from the amount that leaves the idle time Q during each interval so that this time Q is sufficient for the valve switching speeds, for the electronic timing offset and for the change in the conveyor speed.

For example, the conveyor and the hair product can move at such a speed that the commands are transmitted to the master controller at nominally 82 millisecond intervals I. The fixed time period T within this time period in which the dye can be applied to the hair surface is set to 25 milliseconds. for the actual deposition times in this period, they are programmed in the switch processing cycle.

The time period T may be interrupted up to a number of time segments, for example 31, and each air valve may be signaled to remain closed for a select number of such segments C that constitute the on time operation. The remaining segments in which the valve is open to deflect the dye stream should form an off processing time within the switching time period T.

This embodiment has a particular advantage when it is desired to "in situ" mix dyes from different spray bars. Thus, it is apparent that when two spray bars contain primary colors blue and yellow, different shades of green can be obtained by subsequent application of the dye.

to the same spot on the carpet, a dye increment from one spray bar supplying a blue dye stream and a dye increment from the other spray bar supplying a yellow dye stream.

When in-screen mixing cannot be used in a dyeing operation but dyeing is to be achieved by applying the desired dyes in selected areas but from a single spray bar containing the desired color, the air valves that are selected for operation may remain closed for the whole. The duration of the time period would be selected at the beginning of the dyeing operation, based on the characteristics of the hair product, the viscosity and the flow rate of the dye, and the like to ensure that the amount of dye applied to the product is sufficient to fully cover the desired loop or loops. to their base without knocking or sinking into adjacent surfaces.

Of course, the exact size and gap of the dyeing holes, the viscosity of the dye to be applied, the amount of dyes to be applied to an individual target on the hair product, and the like will vary depending on the individual characteristics of the products to be dyeed.

Experience in exemplary dyeing of pile products shows that for carpets having a density range of 500 to 1500 g per .1 m ² and a pile height of from 3.2 mm to 3.8 mm, dye nozzle spacing of 2.5 mm and dimensions. holes of 0.25 mm to 0.65 mm / s with a nozzle length to a diameter ratio of 5 to 13) produces the desired process results. Further, the viscosity of the dyes in the range of about 50 to 1000 has been found to be highly effective in dyeing carpets. In practice, the pressure of the dye streams can vary from 0.055 to 0.105 MPa.

Of course, the exact time I intervals between the E commands, the time T periods, in which signals can be transmitted from the sample machine to the valves, and the idle time Q periods in the processing cycle will vary depending on many parameters such as carpet speed, density and pile yarn type. used in the carpet, required separation of minimum dye increments applied to the hair, viscosity and dye deposition pressure, minimum valve switching speeds and the like.

In practical experience, the dyeing apparatus described herein was used to sample a dye product at 9 meters per minute using a 300% stretch of liquid dye deposited on the weight of the hair yarn and with a minimum dye increment of 2.5 mm along the product, interval the time between commands E would be 16.5 milliseconds. The period T, during which trigger signals could be transmitted, would last 15 milliseconds, leaving a quiescent period Q of 1.5 milliseconds. This would ensure a minimum rest period for a valve switching time of 1.5 millis209418 cunt (air valve switching speed) when the valves are to be kept in the off position throughout the switching period of time period T.

As has been discovered, the pile product moves on an inclined path during application of the dye streams thereto. The inclination angle used is chosen to balance the deleterious effects of gravity on dye flow directionality and the melt or spread of dye increment upon application to the hair surface, while maintaining a sufficient gap between the spray bar and the hair surface to allow gravity flow from the recirculation well or trough; the possibility of dye dripping from the spray bar onto the carpet is minimized. Angles from 15 ° to 50 ° from the horizontal can be used, 25 ° have been found quite sufficient.

Giant. 7 is the registration system 74. When the sync switch 70 is actuated by the thumb thumb 76 just when the first carpet plate on the conveyor reaches the spray bar 42, it resets the flip-flops 65, 87 and the counting sections of computers / comparators 71, 73, 75. Each pulse from the inverter 72 sets the flip-flop 65 to start clock 69a for oscillation. The pulses from the clock 69 and pass to the computers / comparators 71 and 73. The comparator section of the computer / comparator 71 is manually set by a number (shown on the manually adjustable digital indicator 71a as 10) that allows this number of control pulses to pass to the computers / comparators 71 and before resetting the counting section 71 and the flip-flop 65 to stop the clock oscillation.

The comparator section of the computer / comparator is set with a number (shown on the manually adjustable digital indicator ^ 3 and as 25) that allows this number of control pulses to pass to the counting section 73 before the pulse is sent from the computer / comparator 75 back to the reconfigured computer. The comparator 73 transmits one of its coupled pattern signals to temporarily close one or more solenoid valves that allow the corresponding dye streams to impact on the carpet plates.

When the computer / comparator 75 has received a given number of pulses from the computer / comparator 73 (shown on manually adjustable digital indicator 75a as 980), it transmits a signal to the flip-flop 67 to set the flip-flop and disable the gate "a". or pulses to be transmitted to the exemplary control device by the computer / comparator 73. This setting on the indicator 75a is selected according to the number of plates or the length of the textile material to be printed in one operating cycle of the exemplary control device.

The number of pulses per cm transmitted by the converter 72 is multiplied by the computer / comparator 71 and then divided by the computer / comparator 73 to reduce, in the example given, the pulse rate (per cm) by a factor of 10/25. This ratio can be adjusted by adjusting the indicators 71a and 73a in such a way that the pattern fits exactly into the plates. In this way, compensation may be provided for such factors as wear on the conveyor 12.

Giant. 8 is a block diagram of an exemplary control device 68. The main control panel 80 has an input 84 connected to the computer 69 and an input line 86 from the electronic registration system and outputs the line 85 to the computer 69. The control panel 80 has eight additional outputs connected by conductors 81 to eight splitters. 82. Eight spray bars, such as spray bar 42, are connected to individual manifolds 82 by conduits 96 and each include a spray bar connecting panel 98 coupled to a solenoid valve label 100 by conductor 102.

Each of the eight spray bars includes 1560 nozzles driven by 1560 solenoid valves. Exemplary data from computer 69 includes blocks of 8 X 1568 bits and control pulses.

When the conveyor 12 has moved 2.5 mm, the electronic registration system 74 sends a command to the control panel 80, which then requests via line 85 one block of sample data from the computer 69. The computer then provides an output serial bit stream of sample data including control pulses. via line 84 to control panel 80.

Giant. 9 illustrates a serial data format from a computer 69 for a normal operating cycle. The control panel 80 multiplies the data and control pulses into nine groups of 1568 bits, each group being transmitted to one of the eight distributors 82. The first 1560 bits of each group provide sample information for each of the 1560 nozzles in the spray bar, while the last 8 bits are not used in the normal cycle.

Giant. 10 schematically illustrates the circuit board circuit technique 80 for multiplying sample data and control pulses. The control panel 80 includes a pair of lines 84a and 84b that receives sample data and control pulses from the computer 69. The control pulses are applied to the first decoder 118.

The sample data is fed to the second decoder 138.

Each of the decoders 118, 138 receives the address information from the address computer 140 via lines 142 and 144, respectively, and routes the received bits to the eight corresponding distributors via lines 146, 148 in accordance with this address information. The address computer 140 continually increases its number by one after a predetermined number of control pulses that are received by the panel 80 to identify one of the lines 146, 148, and thereby to switch the number of data bits and control pulses to that line.

To increment the address computer 140, events 84b are also coupled to the disposable multivibrator 152 in the 949418 event, whose positive output pulse is applied to the computer / comparator 160.

In a method well known when the computer / comparator 160 has counted a certain number, the output pulse is transmitted to the NAND gate 176, whose other input is connected to the multivibrator 152. The gate output 176 is applied to the count input of the address computer 140.

When no further pulses are received from the computer 69, indicating that all sample data has been supplied, the address computer is reset to zero.

Thus, line 84b is also associated with resettable multivibrator 182 by line 183, the output of which is connected to the main reset input of computer 140. The multivibrator 182 continuously restarts to ensure that no output reset signals are received until control pulses are received at its input. . Further, the computer 160 is reset when it counts a certain number. Thus, the output of gate 176 is also applied to the disposable multi-vibrator 188. The output of the disposable multivibrator 188 is applied to the NOR gate 192, which receives as the second input via line 184, the output from the newly executable multivibrator 182. 160

Decoder. 138 directs the received data to different outputs 148 for transmission to the appropriate splitter 82. As will be appreciated from the data format of FIG. 9, the first 1568 bits of the serial bit stream are switched to the first distributor, the second 1568 bits to the second distributor, and so on. Finally, the computer 140 is incremented by one of every 1568 clock bits. Similarly, the decoder 118 directs the control pulses on line 146 individually to the blast bars.

The sample data and control pulses are multiplied into eight groups of 1568 bits, the function of each distributor 82 is to decode each received group into thirteen subgroups of 120 bits per subgroup, each subgroup. corresponding. width 120 X 2.5 mm across conveyor width 12. Same multiplier technique as. 10 is used and is not shown or described in detail.

Briefly, each of the two decoders (one for data, the other for control pulses) has fourteen output lines 224, 226 (FIGS. 11 and 13). The first 120 bits are passed to the first output lines, the second 120 bits to the second lines, and so on. The last 8 bits of clock data from the group of 1568 bits received by one distributor are loaded. to the fourteenth output lines 224, 226 of the decoders.

With sample data and. the control pulses for the spray bar now grouped into thirteen groups each. 120 bits per group, the distributor 82 registers these bits in a series of thirteen groups on the shift register. Each register in the group is able to register four bits of sample data, and therefore data from any line 224 from the data decoder (not shown but just briefly described) is moved to thirty registers forming a single 120-bit shift register. In Fig. 11, only two of these registers 288, 290 are shown. The first shift register 288 receives an exemplary data through line 224 that is in accordance with control pulses received from line 226 and transducer 292. Each of the thirty shift registers has four output lines 296 for each of the four registered bits fed as one input to the four respective operational differential amplifiers 298. The fourth link of the first shift register 288 is coupled to the input of the second shift register and so on to be able to move 120 bits down to 30 registers . Each of the operational amplifiers 298 has its second input associated with the pick-up line 302, which is the voltage that is used to. controlling, via the amplifier output line 304, the various solenoid valves for a predetermined and varying trigger time in accordance with the sample information registered in the registers.

For example, the four registered bits in shift register 288 represent entry 0. or 1 and may correspond to 0 volts and + 5 levels. Output from each of the operational. The amplifiers 298 will depend on whether the voltage level on line 26 is higher or lower than the voltage level on select line .302. Only when the data bit voltage exceeds the selection line voltage will the output from the amplifier be such as to activate the solenoid valve and allow the dye to flow from the corresponding nozzle onto the carpet plate. Also, the length of activation or start-up time, when the selection line voltage is applied, will control the amount of dye deposited on the carpet plate. Further, during insertion of the bits into the shift registers, none of the solenoid valves should be controlled by exemplary data; therefore during this. an insertion period of sufficiently high voltage of the picking line is ensured. to prevent the amplifiers 298 from changing state and energizing the solenoid valves.

Giant. 12 illustrates a circuitry for providing a suitable selection line voltage to transmit the above quantities. Giant. 12 shows thirteen identical ones. closures 306 for solenoid valves, one. for each of the thirteen groups of 120 bits each stored in the distributor 82. Each shutter 306 includes an operational amplifier 308 whose output. is connected to manual switch 310 with contacts. 310a, 310b and 310c. The input of each of the amplifiers 308 is connected to a 43 volt power supply provided by five diodes 316. The second input of each of the amplifiers 308 is coupled via line 318 to the NAND output of gate 320, one input of which is connected to the spray rod trip relay 322. and whose second input is associated with the output of the startup multivibrator 278.

The output of the shutters 306 is the selection line voltage at the line 302 that is fed to the operational amplifiers 298 of one of the corresponding groups of 120 bits.

0 9 4 1 9

During insertion, the re-start multivibrator 268 is still triggered by control pulses from line 146. Thus, the start multivibrator 278 is not re-started. Therefore, the NAND gate 320 will be out of operation and the line input 318 to the respective 30П amplifiers will be 4-5 volts. Since this [-5 volt voltage is greater than 4-3 volts if the second input of amplifiers 308, the output of these amplifiers will be at + 15 volts. Thus, +15 volts is applied through the output line 302 through contacts 319a, 310c to one of the inputs of the amplifiers 298. Since the data bit voltage does not exceed +5 volts, the operational amplifiers cannot change the state for operation of the solenoid valves during insertion. In addition, a relatively high +15 volt pick-up voltage will also prevent circuit failures from causing the amplifiers 298 to close during insertion. The manual switch 310 can have its contacts 310a and 310b closed to close the shift register and hence one section behind the spray bars using +15 volts on line 320.

After insertion, no control pulses are received by the reset multi-vibrator 268; thus, the output signal is provided to trigger the multivibrator 278 for negative transmission of such a signal. The multivibrator 278 then generates trigger pulses on line 286, the duration of which is proportional to the charge stored on capacitor 280 obtained by resistor 282 from line 284. Line 284 is connected to a downstream voltage divider (not shown) that can be turned on to provide a charging voltage of such that the duration of the trigger pulse has a selected value within 4.5 to 12 ms, or within 4.5 to 47 ms.

The trigger pulse is provided as one input to the gate 320 which, with the trip relay 322 closed, will be able to provide an output pulse of 0 volts on line 318. As this voltage is less than +3 volts supplied by power supply 312, amplifiers 308 will change the state As a result, a +2 V selection signal is applied over line 302 to one input of each amplifier 298 (FIG. 11). Since the second input to each of the amplifiers 298 will be 0 or 5V corresponding to the sample data stored in the shift registers, the amplifiers 293 turn on the operating states depending on these data.

To further ensure that the spray rod nozzles 52 are not controlled in accordance with the sample data until all the shift registers of that spray rod are filled, the output from the reboot multivibrator 298 is steady, then no pulses are received about 25 microseconds to delay the start of the multivibrator 278.

The outputs 304 of amplifiers 298 (FIG. 11) are connected to transistor drivers in solenoid valve shield 100 (FIG. 8), each exciter having a solenoid valve winding in its manifold to shut off that valve when the corresponding data beat is "1" and while the selection line voltage is 2 V.

If the conveyor belt is moving relatively quickly, it is possible for the control panel 80 to request new sample data from the computer 69 while the distributor 82 induces the application of dyes to the carpet in accordance with the sample data from the previously requested data. This condition is known as overspeed and can occur when a relatively long activation or start time is set. That is, the conveyor 12 can move 2.5 mm to invoke the electronic registration system to generate an opening pulse to the control panel 80 to request new sample data while the start multivibrator 278 produces an activation pulse for a relatively long period of time over line 2B6. This undesirable condition can be detected by the overspeed circuitry shown in Fig. 12o and can be corrected by either slowing the conveyor belt speed or reducing the activation time. The overspeed circuitry includes a disposable multivibrator 344. having an input connected to the NAND output of gate 340 and the output associated with line 350 to alarm circuit 352. Gate 346 receives a clock input along line 146 and a second input, which is a trigger pulse from multivibrator 278.

If both control and trigger pulses are received by gate 346, this is an indication that the spray bar is triggered at the same time as the distributor receives the new sample data. In this state, the gate 346 will be able to provide an output pulse whose negative conversion will be the trigger multivibrator 344. The output from the multivibrator 344 will then be routed to the alarm circuit 352 including the first and second transistors 354 and 356. The transistor will turn ON. as light 358.

When the worker sees this light 359 switched on, he or she can then reduce the time, operation or reduce the speed of the conveyor belt. The above discussion focused on the normal processing cycle. In such a processing, when the carpet plate guide is below the spray bar, a predetermined DC amount of dye is applied through the nozzles 52 in accordance with exemplary data stored in the computer. However, the proposed pattern may need to be applied with varying concentrations of dye to a given carpet line. For example, the outer portions of the embodiment in a given row may require a light green color, while the inner portions may require a darker green. This difference in hue is achieved with a split cycle of processing, which will now be described.

Giant. 13 illustrates a circuit control system for providing either a normal or a split processing cycle. This circuitry is only required for the distributor

1, shown in FIG. 8. J-К flip-flop

The 36G has its JK inputs connected to the fourteenth of a9418 mu data line 224 of the data lines and a T or trigger input connected to the fourteenth line 226 of the control lines. The specific lines 224, 226 shown in Figure 13 transmit every 8 extra or sync bits shown in Figure 9. The output of flip-flop 360 is routed to a disposable multivibrator 364 that provides an output pulse along line 366. The duration or width of the output pulse from multivibrator 364 corresponds to the maximum activation time of any distributor 94 and is obtained by charging capacitor 368 through circuit 370 from a switched divider (not shown) in a manner similar to the case in which capacitor 280 of multivibrator 278 (FIG. 12) is charged.

The output from the multivibrator 364 is routed to another disposable multivibrator 370 that is activated in the negative signal transmission line. 366. The output from multivibrator 370 is routed to line 85 (see also FIG. 8) leading back to the computer to request multiple sample data for each of eight distributors. The computer provides a block of sample data sensitive to either pulse E from the registration system of FIG. 7 or pulse from multivibrator 370. During a normal processing cycle, eight sync bits for. each of the eight groups of 1568 bits all have records of 0, as shown in FIG. 9.

These 8 bits are routed through the fourteenth line 224 to the flip-flop 360. Because all of these. the bits are zero, the flip-flop 360 does not change state, and no output is provided to activate the multivibrator 364. Thus, the multivibrator 370 is not triggered and no request for additional sample data is processed until the next pulse E from the registration system 74.

In split cycle processing, the data format includes odd and even cycles in which the odd cycle will have at least one and preferably all of the eight sync bits as entry 1. Eight sync bits from the even cycle will be 0.

During the odd or first cycle of split cycle 1, the data bit appears at the J-K terminals and the flip-flop 360 is triggered at the T terminal by the clock, causing the flip-flop to start the multivibrator 364. This signal in its negatively passed conversion then triggers a multivibrator 370 which provides an opening pulse to request sample data for an even cycle for all distributors 82.

The computer 69 will then supply the additional sample data with synchronization bits that are all 0 so that there is no further request for the sample data until the registration. system 74 prepares another pulse E.

In the split cycle operation, the odd sample data cycle provides information for distributing a predetermined amount of dye into a row of carpet board. During the even cycle, the sample data provides information to apply additional dye to the desired areas of this row of carpet plate, thereby increasing the concentration in these areas and ensuring different tinting of the individual color.

In a split cycle operation, even cycle data should not be required while any distributor 82 is operating in accordance with the odd cycle data stored in the shift registers. Otherwise, the sample even-cycle data will be shifted to the registers before the odd-cycle data is used to apply the desired amount of dye. To prevent this, output. the pulse from the multivibrator 384 has a width equal to the maximum activation time of any distributor, and the advantage arises from the fact that there is an approximately 1 millisecond delay between storing data at eight distributors 82.

Information. thus multiplied by the control panel 80 is first stored in the distributor 1, and it takes approximately 1 millisecond. It. it continues to be approximately eight milliseconds between distributor 1 and 8.

If, for example, the maximum activation time of Distributor 82 is 10 milliseconds a. is set for Distributor 3, then no even-cycle data will be received by this. Distributor 3 before the startup is complete. When Distributor 1 receives odd data. cycle, multivibrator 364 produces an output pulse that lasts 10 milliseconds. After two milliseconds of starting at Distributor 1, Distributor 3 is populated and starts starting after 10 milliseconds. In just 8 milliseconds, Distributor 1 can be ready to store even-cycle data (if its activation time is only 8 milliseconds).

However, there are still 2 milliseconds. the duration of the pulse remaining from the multivibrator 364 (and 4 milliseconds of the start time left in the distributor 3). Then after a further 2 milliseconds, the multivibrator 370 is started and the even data. cycles are requested from a distributor 3 having only 2 milliseconds left. trigger time. . Finally, after 2 milliseconds the even cycle data is moved to. Distributor 3 registers just. how this completed data execution. odd cycle.

In this split-cycle operation, and taking into account the lag time in storing sample data in the registers of eight distributors 82, even-cycle data may be requested while other distributors still run odd-cycle data. This allows the desired pattern to be distributed at a very high degree, as the conveyor moves on. near infinitesimal distances prior to application of the dye to increase concentration along a certain area of the row of carpet panel.

Spray sticks. 42 to 50 are continuously maintained. and can be separated from one another by, for example, a distance of 25 cm.

As a result, the sample data in the computer 69 must be stored on the magnetic tape at a distance corresponding to the time that elapses when the row of carpet plate is moved 25 cm from one spray bar to the next. Thus, if the spray bar 1 applies red dye and the spray bar 2 emits green dye and the two adjacent areas on the row of carpet board receive the red and green dye, then the data stored in the computer will be separated so that when these areas are below the spray bar 1 will be applied to one area and then, when this row of plate is moved by 25 cm, the green dye is applied to the other area.

The present invention can be used to apply any desired pattern to a product and is particularly suitable for applying non-geometric patterns, such as oriental or floral patterns, that require detailed colored areas of small irregular size.

The textile material may be long from a tufted pile carpet material from which a number of flat rugs may be cut. The pattern may then be a flat preposition that is applied in successive portions of the length of the material while it moves continuously under the spray nozzles and then the finishing processes as described in relation to Fig. 1.

Although the invention is described with reference to particularly difficult problems associated with exemplary dyeing of hair products and in particular carpets, it should be understood that the method and apparatus of the present invention can be used to satisfactorily dye other porous textile materials such as yarn bedding, woven knitted and nonwoven products and so on.

The use of an analog timing device for controlling the start time has been explained in relation to FIG. 12. In a split cycle operation or its extension described with reference to FIG. 6, a series of analog timing switches can be used, which are switched into operation in the control sequence. different trigger times for two or more segments into which. T is divided.

The process of the invention can be demonstrated by giving the following typical examples.

He did

2.04 number cotton yarn, 4.5 twist per 2.54 cm With twisted staple yarn, anthron nylon type 838 are glued to the underlying reinforced nonwoven film to create a cut pile woven carpet with 13.5 yarn ends at 2.54 cm across and 18 yarn ends at 2.54 cm longitudinally. The carpet having a pile yarn weight of 1370 g / m ² and a pile height of 6.5 mm is cut into boards of an area of 46 cm ² . The plates are slightly brushed to position the hair perpendicularly and placed on the conveyor 12 of the jet dye 29 described herein. The conveyor has suitable guides for accurate placement of the plates in separate intervals 5 cm apart. A computer-generated exemplary control tape is used in an exemplary control device to control the application of colorant to the plates to form a uniformly arranged pattern of 36 squares with an edge of 2.54 cm on each plate. However, each spray bar is disabled as the guide crosses.

The dyeing bath used contains:

Component parts by weight formic acid (90%) 2.5

Progalan PNC - 20.6

Chemco Defoamer 73 Special1,0

Polygum CP0,7

Tectilon Blue 4G 200% 0.1 Water95.1

100 ’

Mixture of wetting agents and surfactants - Chemical Processing of Georgia.

Alcohol blend - Chemical Processing of Georgia.

Modified Natural Resin Dust - Polymer Southern

Dye - acid blue 40 - Ciba Geigy.

The dyeing bath has a pH of 2.3 and a viscosity of 54 mPa as measured by a Brookfield viscometer (LVF model) using spindles 1 at 60 rpm.

The jet spraying machine is adjusted to reproduce 10 of the above-described plates in a dyeing cycle that is triggered by a signal from a conveyor-controlled microswitch precisely positioned on the conveyor. The pressure in the air manifold is 0.056 MPa. Linear conveyor speed is 18 m / min.

Air deflected dyeing nozzles of said 0.35 mm diameter and 3.2 mm channel length are arranged along the blast bars at 2.5 mm pitch in the transverse direction, i.e. perpendicular to the direction of movement of the carpet. The dye flow through the individual orifice is 35 mm / min. measured as continuous current. The pattern of said squares is formed by triggering the dyeing baths of 24 millisecond duration in the desired areas at each time the conveyor (and hence the plates) are displaced by 2.5 mm relative to the fixed position of the dyeing nozzles. The distance from the dye nozzle to the pile surface is approximately

3.8 mm.

The printed plates are then steamed for 4 minutes on a continuous belt steamer under saturated steam conditions (100 ° C, 0.1 MPa).

At the steamer outlet, a series of water spray nozzles cover the back of the plates and cool air is blown onto the face of the plates. The sheets are then passed through a washing machine which sprayes water and ambient temperature on the face and extracts it. The aim is to remove the residual thickeners, г O S 4 1 8 chemicals and any unattached dye. The plates are then dried in a rotary drum drier at 135 ° C. After starting the oven, the plates are placed on a flat water-covered table for five minutes before inspection and packaging.

Example Z

2,24 figure · cotton yarns, 4 turns per 2,54 cm With staple yarn Anso (Allied Chemical) nylon spun yarns are sewn in 4 mm pitches, 3,65 m wide machine for sewing cut hair into Typar (Du Pont polypropylene) nonwoven substrate. The pile height is 13.5 mm. After dyeing and finishing, including cutting, the pile height is 12.7 mm and the face fiber weight is 1150 g / m ² .

For sample preparation, the product described above is cut manually into 46 cm long and 23 cm wide pieces.

The specimen pieces are then stained on a base shade foulter by immersing the piece in the dye bath tank (composition below) for 8 seconds and passing it through a conventional dye bath wring, stretching down to 10% based on the weight of the face yarns. The composition of this basic color shade is:

component weight parts

Polygum CP (Polymer) 0.9

NaHaPOí0.4

NazHPO 6 0.1

Merpacyl yellow 4G (powder) (Du Pont) 0.02188

Merpacyl red G (powder) (Du Pont) 0.00400

Merpacyl blue 2GA (powder) (Du Pont) 0.00700 water 98.568 The pH of the final mixture is 6.3 and the viscosity is 62 mPaS measured on a Brookfield viscometer model LVF with spindle 1 at 60 rpm.

The supported samples are then placed on the conveyor of the jet dyeing machine and passed under two successive spray bars at a rate of 1.8 m per minute. Two colors are applied from separate spray bars to the tufted carpet sample and the composition of the two dye baths is shown below. Each spray bar has a nominal dye nozzle diameter of 0.5 mm, 3.2 mm channel length, with 2.54 mm pitches. The distance between the spray bars is 30.5 cm. The pressure at both spray bar manifolds is 0.098 MPa and the pressure at both air manifolds is 0.070 mPa. The dyeing flow rate for a single nozzle, measured continuously, is 120 mm · per minute, and the nozzle orifices are located about 3,8 3.8 mm from the hair surface.

Composition of dyes component weight parts

Polygum CP (Chem. Process of Ga) 1.0 Formic acid (90%) 1.5

Chemco · defoamer 73 · Special [Chem. Process of Ga.) 1.0

Progalan PCN-2 (Chem. Process of Ga.) 0.6 dyes from I or II below water residue to 100 ·% pH == 2.5

Viscosity = 145 mPas [Brookfield model LVF, spindle 1, 30 rpm)

Spray dyes · Spray bar I Spray bar II

Verona - Isalan Yellow NV (250%)

Ciba Geigy - Tectilon Blue 46 (200%) Allied Chem - Alizarin Violet - NRR

0,10000

0.00132

0.00100 “0.10232

0.375

0.00496

0.00392

0.38388

The stained samples are backed with 1070 g / m ² yarn latex adhesive and 140 g / m ² SB woven Polyback (Patchogue - Plymouth

100% polypropylene fiber).

The samples are sprayed with a sample spray device.

The nozzles are triggered in the desired areas of the product for 24 millisecond pulse durations.

After sample staining, the samples are steamed for 8 minutes in saturated steam (100 ° C, 0.1 MPa) and then washed with cold water, passed through a squeezing roller and dried at 120 ° C.

Claims (12)

A method of dyeing a porous textile material to obtain a desired pattern using an apparatus wherein the material is moved relative to a plurality of orifices from which the dye is displaced across the material movement and during each increment of movement a liquid dye stream discharged from each orifice selectively directs off the material and onto the material in accordance with the pattern to be applied to the material, characterized in that all dye streams are directed to the material for a predetermined period of time (T), less than the time (I) required for one increment of motion wherein the dye streams are rectified in accordance with the pattern during each of the time periods (T), and at the time (I) required for one increment of motion, a rest period (Q) is maintained, during which rest periods (Q) dyes direct outside the material. Method according to claim 1, characterized in that the rest period (Q) always follows the end of the time period (T). Method according to claim 1 or 2, characterized in that the dye streams are directed to the material at time periods (T) selectively during predetermined time segments (C) adjusting the time period (T). 4. A method according to any one of claims 1 to 3, characterized in that the preselected time periods (T) in each cycle [I] have the same duration. 5. An apparatus for carrying out the method of items 1 to 4 comprising a conveyor. for moving the material, at least one row of apertures arranged transversely adjacent to the conveyor, a pump for pumping liquid dye in continuous streams out of the apertures, controllable flow deflectors individually to the apertures and acting perpendicular to deflect dye streams from the material carried by the conveyor comprising a conveyor-sensitive recording device (64, 65) to provide timing signals (E) indicative of a sequence of processing cycles corresponding to conveyor increment, an exemplary control device (94) operable to selectively control the deflection means in accordance with stored data to retrieve impinging selected dye streams on the material during the Time Period (T) or at least one segment (C) of the Time Period (T) in each cycle and the Timing Circuits (278, 280, 282) to determine the duration of each Time Period (T) as is shorter n cycle time and determined independently of any changes in cycle time. 6. The apparatus of claim 5, comprising a data block source (69) each relating to one of said time periods (T), a memory (288,290) in an exemplary row. BACKGROUND OF THE INVENTION a device (94) for storing one block of data and a circuit responsive to each time signal (E) from a recording device for transferring fresh blocks of data from a source to a memory. The apparatus of claim 6, wherein the exemplary control device (94) further comprises a circuit (360, 363, 370) responsive to selected blocks from the data blocks to initiate the transmission of further blocks of data from the source (69) to the memory (288). 290) at the end of the time period segment. 8. The apparatus of claim 7, wherein the exemplary control device further comprises a circuit for preventing data transmission with respect to any deflecting means as long as they are ordered to allow the dye streams to impinge on the material. Device according to any one of Claims 5 to 8, characterized in that the recording system comprises a pulse transmitter (64) in accordance with equal conveyor path increments and an adjustable pulse rate multiplier and / or divider (68 to 72) to provide time signals (64). E) to a speed that is adjustable in proportion to the speed of the transmitted pulses. 10. A device according to any one of Claims 5 to 9, wherein the exemplary control device. (94) is arranged to store one data bit for each aperture, wherein the bit value determines whether the corresponding dye stream remains deflected or allowed to fall on the material while being. a timing circuit (278, 280, 282) is provided to provide a time pulse (302) determining the duration of its time period (T) or segment (C), and a gate (298) to produce logical products between the time pulse (302) and data bits ( 296) to provide signals (304) that individually control the deflecting means such that each dye stream is allowed to impact the material for only one value of the corresponding data bit and then only during the time pulse. Device according to any one of Claims 5 to 10, characterized in that it comprises rows (50 to 54) of apertures (55) located in the direction of movement of the conveyor (12), registers (288, 290) in memory for storing a block of data relating to all apertures in all rows, each register being arranged to store a group of bits corresponding to one row of apertures, a data source (69) adapted to transmit a block of data in serial form, and a splitter (138, 140) adapted to split bits in their groups to corresponding registers . Device according to any one of Claims 5 to 14, characterized in that the exemplary control device comprises a safety control circuit (346, 344, 352) for generating an alarm when the cycle (I) becomes too short in relation to a preselected time period .