A linear speed-linked zone-addressing pulse jet finishing device and control method

Abstract

This invention discloses a linear velocity-linked, zone-addressable pulse jet finishing device and its control method. The device includes a frame, a continuous fabric conveying assembly, a jet finishing assembly, and an electrical control assembly. The jet finishing assembly includes a nozzle mounting beam, a main liquid supply pipe, distribution pipes, and an array of pulse nozzles arranged along the width direction. Each nozzle has a built-in chip and a zone-addressable interface. The electrical control assembly collects the linear velocity and outputs corresponding pulse parameters to each zone nozzle, enabling the application amount per unit area to be adjusted in conjunction with the linear velocity and compensated for width. The device is equipped with a filtration, reflux / drainage, and optional bypass rinsing structure, and can be modularly installed before and after a setting machine for functional finishing such as antibacterial, flame-retardant, and infrared heat shielding. Compared to padding, this invention can achieve the target functional effect with a lower wet application amount, which helps reduce reagent consumption and drying evaporation load, while improving the adaptability and maintenance convenience of the particle system.

Description

Technical Field

[0001] This invention belongs to the field of textile machinery and intelligent control technology, specifically relating to a linear speed linkage zoned addressing pulse jet finishing device and control method. Background Technology

[0002] Functional finishing of textiles imparts properties such as antibacterial, flame retardant, water repellency, stain resistance, and heat shielding to fabrics. Traditional functional finishing often employs a pad-on process, where the fabric is impregnated with a finishing solution, then passed through rollers to absorb the solution before drying and curing. This method is mature and widely applicable, but it generally suffers from problems such as high solution load, reagent loss due to solution replacement and re-carrying / hanging, time-consuming cleaning when changing products or formulas, heavy wastewater treatment burden, and high drying and evaporation load. In high-value-added auxiliaries such as antibacterial and heat shielding applications, reagent loss and energy costs are even more prominent.

[0003] Spray finishing, which atomizes or sprays finishing liquid onto the fabric surface during operation via nozzles, offers advantages such as on-demand application, low wet application volume, ease of continuous operation, and energy conservation and emission reduction, theoretically making it more suitable for large-scale functional finishing applications. However, existing spray finishing equipment still has several shortcomings in continuous industrial operation, making it difficult to simultaneously achieve "quantitative controllability, uniformity, long-term stability, and maintenance costs," mainly reflected in:

[0004] 1) The amount applied per unit area fluctuates with the linear velocity, resulting in insufficient reproducibility of the quantitative application. Existing equipment often uses hydraulic / pneumatic nozzles, which are adjusted by the supply pressure, valve opening, or number of nozzles. In actual production, the linear velocity varies due to start-stop, acceleration / deceleration, tension fluctuations, and fabric splicing. If the spray volume cannot be linked to the linear velocity in real time, the amount applied per unit area will fluctuate with the change in linear velocity, leading to unstable performance in antibacterial grade, flame retardant index, and heat shielding, or causing localized over-application that results in quality problems such as stickiness, hardening, and migration.

[0005] 2) The difference between the edge and center of the spray pattern along the width direction is significantly affected by the wind field, easily leading to streaks and uneven functional distribution. The spray pattern is affected by factors such as edge dispersion, negative pressure of the casing, airflow disturbance, fabric flatness, and differences in tension distribution, resulting in different actual liquid volumes at the edges and center. If uniform control parameters are used across the entire width, it is difficult to implement differentiated compensation for different width areas, easily leading to underspray or overspray at the edges, lateral streaks, migration, and uneven functional distribution. For systems such as heat shielding that are sensitive to coating thickness, the above unevenness may also manifest as thermal mottles and apparent temperature fluctuations.

[0006] 3) Traditional pressure nozzles have limited response and repeatability, making it difficult to achieve high-frequency pulse on-demand spraying. Functional adjustments in industrial production often require rapid opening and closing, segmented application, or adjustment of spray volume according to operating conditions. Conventional pressure nozzles have limited dynamic response and repeatability under high linear velocity conditions, easily exhibiting spray lag, trailing, intermittent instability, or spray volume drift, thus hindering the implementation of precise quantitative and on-demand application.

[0007] 4) Insufficient system adaptability and maintainability; particulate / high-solids finishing solutions are prone to clogging and incur high downtime costs. Flame-retardant and heat-shielding systems often contain inorganic particles or dispersions, accompanied by high-solids binders. Fine-aperture high-precision spraying solutions have stringent requirements for system cleanliness and are prone to clogging due to particle deposition, crystallization, or gelation; while the inconvenience of nozzle disassembly, cleaning, and drainage increases downtime and maintenance costs, affecting the availability of continuous production.

[0008] Based on existing publicly available solutions, many technical approaches focus on improvements such as nozzle type, spray beam arrangement, liquid supply stabilization, or wind deflection and suction. However, most still employ a "whole-width uniform parameter" control architecture, making it difficult to simultaneously address the issues of linear speed fluctuation and width edge-to-center difference. While directly transplanting digital printing piezoelectric nozzles can improve accuracy, the high maintenance costs and small nozzle size are detrimental to the long-term stable operation of systems containing particulate functional additives. Therefore, to achieve reproducible functional finishing effects under continuous industrial conditions, the key to jet finishing lies in simultaneously achieving: real-time controllable application amount per unit area and compensable uniformity in the width direction, while also considering the compatibility with particulate systems and ease of maintenance.

[0009] For the reasons mentioned above, it is necessary to introduce an engineered architecture for nozzle chip-based zoned control: integrating addressable chip units on the nozzle side allows the nozzle array to be driven independently by width zones, and outputs pulse parameters in conjunction with the linear speed signal. This enables on-demand quantitative control and edge-to-center difference compensation that varies with linear speed, while maintaining nozzle diameter compatibility with the particle system and ease of maintenance. This improves appearance and functional consistency and reduces overall cost. Therefore, it is necessary to provide a linear speed-linked intelligent spraying device and its control method with chip-based zoned control, suitable for modular upgrades of existing stenter production lines. Summary of the Invention

[0010] This invention addresses the problems of existing spray finishing devices in continuous industrial operation, such as fluctuations in the amount applied per unit area with linear speed, difficulty in compensating for side-to-center differences in the width direction, difficulty in achieving on-demand high-frequency pulse quantitative application, and easy clogging and inconvenient maintenance of functional finishing liquids containing particles or high solids content. It proposes a linear speed-linked intelligent spray finishing device and its control method with chip-based partition control to improve the controllability and reproducibility of spray quantitative application, improve the uniformity of application in the width direction, and enhance the reliability of continuous operation.

[0011] To address the above problems, the present invention provides a linear speed linkage zoned addressing pulse jet finishing device, comprising a frame, a continuous fabric conveying assembly, a jet finishing assembly, and an electrical control assembly;

[0012] The continuous fabric conveying assembly is used to drive the fabric to run continuously and form a surface to be processed.

[0013] The spray finishing assembly includes a nozzle mounting beam, a liquid supply main pipe, a distribution pipeline, and multiple pulse nozzles arranged along the width direction.

[0014] Each of the pulse nozzles has a built-in nozzle chip, and each of the pulse nozzles is provided with an addressing interface that is electrically connected to the nozzle chip.

[0015] The electronic control component includes a linear speed detection unit and a nozzle drive control unit. The linear speed detection unit is used to acquire the linear speed signal of the fabric, and the nozzle drive control unit is electrically connected to each of the addressing interfaces.

[0016] The nozzle drive control unit is configured to generate pulse drive parameters based on the fabric linear speed signal, and to address and drive the plurality of pulse nozzles through the addressing interface, so that the pulse nozzles in different partitions in the width direction output different pulse drive parameters respectively, so as to realize the unit area application amount is adjusted in conjunction with the linear speed and to perform partition compensation for the application amount in the width direction.

[0017] Furthermore, the nozzle chip includes a driver board for receiving addressing information and performing pulse driving, wherein the addressing interface is a bus interface, a pin terminal or a connector interface, and is used to transmit nozzle address information and / or pulse driving parameters.

[0018] Furthermore, the nozzle drive control unit implements at least one of the following addressing modes through the addressing interface:

[0019] Addressing driver for a single nozzle; addressing driver for a group of nozzles; addressing driver for nozzles in width zones.

[0020] Furthermore, multiple pulse nozzles located in different zones along the width direction form width zones, including at least a left zone, a middle zone, and a right zone, and different zones correspond to different zone compensation coefficients K. i Or different partition target application amount A i .

[0021] Furthermore, the nozzle drive control unit adjusts the linear velocity v and the target application amount A per unit area according to the linear velocity v and the target application amount A. set Calculate the target injection volume per unit time and map the target injection volume per unit time to the pulse drive parameters of each zone.

[0022] Furthermore, the electronic control component includes a human-machine interface for setting the target application amount A per unit area. set and / or partition compensation coefficient K i It is used to select on-demand injection mode and / or zone compensation mode.

[0023] A linear velocity-linked zone-addressable pulse injection control method includes the following steps:

[0024] Step 1: Collect the fabric linear velocity v;

[0025] Step 2: Collect or measure the actual application amount for each zone, and compare the actual application amount for each zone with the target application amount A per unit area. set Determine the compensation coefficient K for each partition based on the deviation. i ;

[0026] Step 3: Based on the fabric linear velocity v and the target application amount A per unit area set and the compensation coefficient K for each zone i Generate the pulse drive parameters corresponding to each partition;

[0027] Step 4: Implement independent addressing drive for each zone nozzle through the addressing interface, so that each zone nozzle performs pulse spraying according to the corresponding pulse drive parameters, thereby realizing the linkage control of the unit area application amount and linear velocity, as well as the zone compensation of the application amount in the width direction.

[0028] Furthermore, in step two:

[0029] S1. Determine the initial compensation coefficient K for each partition. i =1; Measure the actual wet application amount Ai,meas per unit area of ​​each zone; where the compensation coefficient K for the i-th zone is... i Through K i =A set / A i,meas Sure;

[0030] S2, K as needed i Amplitude limiting is applied to avoid excessive correction in a single step; the target wet application amount A for the i-th partition. i,set Through A i,set =K i ×A set Sure.

[0031] Furthermore, in step three:

[0032] Obtain the target wet application amount A for each zone i,set Based on the fabric linear speed v and the partition width W i Number of nozzles N i The pulse drive parameters required for each zone are determined by the single-pulse ejection rate of the nozzle; where the required wet mass flow rate m for the i-th zone is...i Determine by the following formula:

[0033] m i =(A i,set ×v×W i ) / 60

[0034] Where v is in m / min, W i The unit is m, m i The unit is g / s.

[0035] Furthermore, under fixed injection pressure, finishing fluid viscosity, and nozzle conditions, a single nozzle was calibrated to obtain the single-pulse ejection rate m under 100% duty cycle conditions. p 100. Let the number of nozzles in the i-th section be Ni, and the pulse frequency be f, then the duty cycle D of this section is... i Determine D using the following formula: i =m i / (N i ×f×m p ,100).

[0036] Compared with the prior art, the present invention has at least the following beneficial effects:

[0037] (1) Chip addressing partitioned differential output: The nozzle has a built-in chip and achieves independent partition driving through the addressing interface (322), so that different width partitions output different pulse driving parameters, thereby compensating for edge-to-center differences, improving application uniformity and reducing the risk of stripe / migration defects.

[0038] (2) Linear speed linkage makes quantitative control more controllable: Based on the linear speed signal, pulse drive parameters are generated and updated so that the amount applied per unit area is matched with the linear speed linkage, thereby improving the quantitative controllability and reproducibility.

[0039] (3) More stable particle system adaptation and continuous operation: filtration, micro filter element, large diameter spray chamber / orifice, and reflux / drainage and optional online flushing structure help reduce the risk of clogging and spray fluctuation, and improve the reliability of continuous operation.

[0040] (4) Easy maintenance and modification: quick-release liquid supply and electrical connection facilitate nozzle maintenance, and modular structure facilitates the installation of a stenter before / after, improving the convenience of engineering application.

[0041] The degree to which the above effects are achieved is related to operating parameters such as fabric type, solid content of finishing formula, linear speed and equipment thermal efficiency. However, the present invention provides a stable basis for partition addressing and linear speed linkage pulse control, which is beneficial to improving the consistency of continuous finishing and reducing overall costs. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the overall structure of the device;

[0043] Figure 2 A schematic diagram showing the installation of the spray finishing assembly and nozzle array;

[0044] Figure 3 This is a schematic diagram of a chip-embedded pulse nozzle structure and its zoned addressing connection.

[0045] Figure 4 This is a schematic diagram illustrating the relationship between linear velocity detection and zoned pulse-on-demand injection control.

[0046] Figure Labels

[0047] 1. Rack;

[0048] 2. Continuous fabric conveying assembly; 21. Guide roller; 22. Traction roller; 23. Linear speed detection unit;

[0049] 3. Spray finishing assembly; 31. Nozzle mounting beam (31); 32. Pulse nozzle; 321. Nozzle chip; 322. Addressing interface; 323. Quick-release electrical connector; 324. Quick-release liquid supply connector;

[0050] 33 Main supply line; 34 Distribution line; 35 Filter; 36 Replaceable microfilter cartridge; 37 Return / drain interface; 38 Bypass flushing channel; 39 Online flushing return valve;

[0051] 4. Electrical control components; 41. Nozzle drive control unit; 42. Pulse drive power supply; 43. Human-machine interface; 44. Addressing / zone communication bus;

[0052] 5. Sterilizer; 51. Sterilizer inlet; 52. Sterilizer outlet;

[0053] F: Fabric; S: Surface to be processed. Detailed Implementation

[0054] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0055] Example 1

[0056] like Figures 1-4 As shown, a finishing device with chip-based partition control and linear speed linkage intelligent spraying function and its control method include: a frame 1, a continuous fabric conveying assembly 2, a spraying finishing assembly 3, an electrical control assembly 4, and a setting machine 5 connected to the production line.

[0057] The continuous fabric conveying assembly 2 includes a guide roller 21, a traction roller 22, and a linear speed detection unit 23. The fabric F is continuously passed through the spray finishing assembly 3 under the traction of the traction roller 22, and the linear speed detection unit 23 outputs a linear speed signal v. The continuous fabric conveying assembly 2 is used to drive the fabric F to run continuously and form the surface S to be finished.

[0058] The spray finishing assembly 3 includes a nozzle mounting beam 31 and multiple pulse-type nozzles 32 arranged along the width direction. The multiple pulse-type nozzles 32 form a nozzle array, and the nozzle array forms wide sections according to the width. The wide section includes at least a left section, a middle section, and a right section. Each pulse-type nozzle 32 integrates a nozzle chip 321 and is connected to an addressing / section communication bus 44 through an addressing interface 322 to realize addressing control of each nozzle or each section of nozzles. A quick-release electrical connector 323 and a quick-release liquid supply connector 324 are provided between the nozzle and the system to facilitate quick disassembly and maintenance of the nozzle.

[0059] The liquid supply side includes a main liquid supply pipe 33, a distribution pipe 34, a filter 35, and a replaceable microfilter element 36 for the nozzle inlet; and a return / drainage interface 37 is provided for draining, returning, or cleaning the liquid supply path. A bypass flushing channel 38 and an online flushing return valve 39 are also provided. The bypass flushing channel 38 is connected to the return / drainage interface to perform online flushing, return, or drainage cleaning of the liquid supply path and / or the nozzle when the nozzle stops spraying, reducing the risk of blockage and spray fluctuations.

[0060] Furthermore, a filter is provided on the main supply pipe and / or the distribution pipe, and a replaceable microfilter 36 is provided at the inlet of the pulse nozzle 32.

[0061] Furthermore, the pulse nozzle 32 includes a large-diameter spray chamber and a large-diameter spray orifice to accommodate functional finishing liquids containing particles or high solids content.

[0062] The electronic control component 4 includes a nozzle drive control unit 41, a pulse drive power supply 42, a human-machine interface 43, and an addressing / zone communication bus 44. The human-machine interface 43 is used to set the target application amount A per unit area. set Zoning compensation coefficient K i and operating mode; the nozzle drive control unit 41 operates according to the linear velocity v and A. set With K i Calculate the pulse drive parameters for each partition (including pulse frequency f). i Duty cycle D i or pulse width PW i And, through the addressing / partition communication bus 44, different pulse parameters are sent to the corresponding partition nozzles to realize linear speed linkage quantitative and width partition compensation.

[0063] Furthermore, the pulse drive parameters include at least one of pulse frequency, duty cycle, pulse width, pulse period, number of pulses per unit time, or nozzle opening and closing sequence, and the pulse drive parameters of different zones are different from each other in at least one of them.

[0064] Furthermore, the linear speed detection unit is located at the traction roller or connected to the traction roller drive, and the linear speed signal is at least one of the following: traction roller speed signal, encoder signal, speed measuring wheel signal, or motor feedback signal.

[0065] Furthermore, the device has a modular structure and is equipped with an installation interface for connecting to the inlet or outlet of the stenter, so as to realize the retrofit and modification of existing stenter production lines.

[0066] Example 2

[0067] This embodiment provides a linear speed-linked partitioned addressing pulse jet control method for implementing the linear speed-linked partitioned addressing pulse jet finishing device in Embodiment 1, including the following steps:

[0068] Step 1: Collect the linear velocity v of the fabric (F).

[0069] Step 2: Collect or measure the actual application amount for each zone, and compare the actual application amount for each zone with the target application amount A per unit area. set Determine the compensation coefficient K for each partition based on the deviation. i ;

[0070] Step 3: Based on the fabric linear velocity v and the target application amount A per unit area... set and the compensation coefficient K for each zone i Generate the pulse drive parameters corresponding to each partition;

[0071] Step 4: Implement independent addressing drive for each zone nozzle through addressing interface 322, so that each zone nozzle performs pulse spraying according to the corresponding pulse drive parameters, thereby realizing the linkage control of the unit area application amount and linear velocity, as well as the zone supplementation of the application amount in the width direction; and can perform online flushing backflow or drainage cleaning when preset maintenance conditions are met.

[0072] In this embodiment, A set Determined by the target dry application rate, solid content, and deposition efficiency; K i The parameters are determined by the deviation between the actual applied amount and the target wet applied amount in each zone; the pulse parameters of each zone are calculated by the target applied amount, linear velocity, zone width, number of nozzles, and single pulse spray volume.

[0073] In this embodiment, the partition compensation coefficient K iDetermination: Due to factors such as edge scattering, uneven coverage, tension differences, or airflow disturbances in the width direction during the spray finishing process, the actual application amount in different zones may deviate. Therefore, a zone compensation coefficient K needs to be introduced. i Make corrections.

[0074] Specifically, a baseline injection is first performed under uncompensated conditions, i.e., the initial compensation coefficient for each zone is set to K. i =1; then measure the actual wet application amount A per unit area of ​​each zone. i,meas The compensation coefficient K for the i-th partition. i Determine by the following formula:

[0075] K i =A set / A i,meas

[0076] K can be used if necessary i Amplitude limiting is applied to prevent excessively large corrections in a single step. Determine K. i Afterwards, the target wet application amount A for the i-th partition. i,set Determine by the following formula:

[0077] A i,set =K i ×A set

[0078] In this invention, the determination of pulse drive parameters for each zone is as follows: after obtaining the target wet application amount A for each zone... i,set Then, based on the fabric linear speed v and the partition width W i Number of nozzles N i The pulse drive parameters required for each zone are determined by the nozzle's single-pulse ejection rate. The required wet mass flow rate m for zone i is... i Determine by the following formula:

[0079] m i =(A i,set ×v×W i ) / 60

[0080] Where v is in m / min, W i The unit is m, m i The unit is g / s.

[0081] Under fixed injection pressure, finishing fluid viscosity, and nozzle conditions, a single nozzle was calibrated to obtain the single-pulse ejection rate m under 100% duty cycle conditions. p,100 Let N be the number of nozzles in the i-th section. i If the pulse frequency is f, then the duty cycle D of this partition is... i Determine by the following formula:

[0082] D i =mi / (N i ×f×m p,100 ).

[0083] Furthermore, when the linear velocity changes beyond a preset threshold, the pulse drive parameters are updated to maintain a stable amount applied per unit area.

[0084] Furthermore, when preset maintenance conditions are met, online flushing and reflux or drainage cleaning is performed, including opening the online flushing and reflux valve and flushing the liquid supply passage and / or nozzles through the bypass flushing channel and the reflux / drainage interface.

[0085] Example 3

[0086] Antibacterial finishing is sensitive to the amount of effective ingredients applied per unit area and the uniformity of width. Traditional dip rolling processes are prone to fluctuations in the amount applied when the speed changes or the roll yield fluctuates, and there are problems such as bath liquid backflow and liquid discharge when changing the direction. Conventional continuous spraying is mostly controlled by the same parameters of the whole width, which makes it difficult to simultaneously take into account the quantitative control of linear speed linkage and the compensation of edge-center difference.

[0087] Fabric F: Cotton-ammonia knitted jersey (approximately 180 g / m², width 170 cm, thickness 0.55 mm, moisture content approximately 6%). The device of this invention is installed before the stenter inlet 51. Zoning: Left / middle / right three zones.

[0088] 1) Finishing solution formulation

[0089] Quaternary ammonium salt polymer antibacterial agent (effective content approximately 10%): 25 g / L

[0090] Water-based adhesive (PU / acrylic, solids content approximately 35%): 18 g / L

[0091] Crosslinking agent (solid content approximately 30%): 4 g / L

[0092] Wetting and penetrating agent: 1 g / L

[0093] Defoamer: 0.2 g / L

[0094] Water: Replenish

[0095] 2) Process parameters

[0096] Linear speed v: 30 m / min (operating range 20–40 m / min)

[0097] Target wet application rate A per unit area set 28 g / m²

[0098] Zonal compensation coefficient: K L =1.05, K M =1.00, K R =1.05

[0099] Pulse parameters: f = 35 Hz; Middle zone D M =20%; Border region D L =D R =21%

[0100] Curing: 150℃ × 60 s in a setting machine

[0101] A set =28g / m²; the actual applied amounts in the left, middle, and right zones, measured by benchmark spraying, were 26.7g / m², 28.0g / m², and 26.7g / m², respectively. Based on this, K was obtained. L =28.0 / 26.7=1.05、K M =1.00、K R =1.05. Furthermore, given the effective width of the equipment, the width of the zones, the number of nozzles in each zone, and the single-pulse output of a single nozzle, the target application rate, the required mass flow rate, and the duty cycle for each zone can be calculated sequentially, thus obtaining the central zone D. M =20%, Border Region D L =D R =21%.

[0102] The nozzle drive control unit 41 updates the pulse parameters of each zone in real time after receiving the linear velocity v, so that the amount applied per unit area remains stable as the linear velocity changes; different zones output different pulse parameters for edge-to-center difference compensation. The liquid supply system activates the online filter and microfilter cartridge, and if necessary, flushing and reflux or drainage cleaning can be performed through the online flushing return valve 39.

[0103] 3) Comparative Example 1 (Impregnating Antibacterial Process)

[0104] Fabric F: Cotton-ammonia knitted jersey (approx. 180 g / m², width 170 cm, thickness 0.55 mm, moisture content approx. 6%). Equipment: Padding machine, setting machine curing section. Formulation: Same active ingredients as in Example 1.

[0105] parameter:

[0106] Rolling yield: Target 70–90%

[0107] Linear speed: 20–40 m / min

[0108] Curing: 150 ℃ × 60 s

[0109] 4) Effect Comparison

[0110]

[0111] Example 4

[0112] Flame retardant finishing typically involves high-solids or particulate dispersion systems. Traditional padding is susceptible to effects from bath sedimentation, cyclic shearing, and secondary contamination of the rolls, leading to feed drift and surface defects. High-precision piezoelectric nozzles are sensitive to particles and have high maintenance costs. Continuous industrial processes require spray structures adapted to particulate systems, stable feed control, and convenient maintenance.

[0113] Polyester-cotton woven fabric (approximately 240 g / m², width 160 cm, thickness 0.80 mm, moisture content approximately 8%). This device is installed before the stenter inlet 51. Zoning settings: five zones (edge ​​zone compensation).

[0114] 1) Finishing solution formula:

[0115] APP dispersion (solid content approximately 50%): 110 g / L

[0116] Nitrogen-based synergist dispersion: 25 g / L

[0117] Water-based adhesive (solids content approximately 35%): 22 g / L

[0118] Crosslinking agent: 5 g / L

[0119] Dispersant / wetting agent: 1.5 g / L

[0120] Defoamer: 0.3 g / L

[0121] Water: Replenish

[0122] 2) Process parameters:

[0123] Linear speed v: 18 m / min (operating range 10–25 m / min)

[0124] A set 55g / m²

[0125] Partition compensation: Border K edge =1.03, K=1.00 in the middle zone

[0126] Pulse parameters: f = 30 Hz; D = 25% in the middle region; D = 25.8% in the edge region.

[0127] Curing: 170 ℃ × 90 s

[0128] Maintenance strategy: When the differential pressure reaches the threshold or the cumulative operation reaches the set time, the online flushing return valve 39 is opened. The cleaning fluid flushes the distribution pipeline 34, the nozzle inlet microfilter 36 and the nozzle inlet channel through the bypass flushing channel 38. The waste liquid is discharged or recirculated through the return / drain interface 37. The nozzle is quickly disassembled and assembled through the quick-release liquid supply connector 324 and the quick-release electrical connector 323.

[0129] 3) Comparative Example 2 (Traditional Impregnation Flame Retardant Process)

[0130] Polyester-cotton woven fabric (approximately 240 g / m², width 160 cm, thickness 0.80 mm, moisture content approximately 8%). Equipment: padding car + drying and curing section. Formulation: Same as in Example 2 or equivalent with increased dosage.

[0131] Process parameters:

[0132] Roll-up ratio: 80–110% (Flame retardants often require a higher liquid loading rate)

[0133] Linear speed: 10–25 m / min

[0134] Curing: 170 ℃ × 90 s

[0135] 4) Comparison of Results (Table)

[0136]

[0137] Example 5

[0138] Fragrance finishing (fragrance retention / slow release) often employs microcapsule or encapsulated fragrance systems. However, if applied before the high-temperature setting stage, the active ingredients are easily lost due to high-temperature volatilization. Traditional post-application of fragrance after padding leads to problems such as high liquid carryover, long drying time, and easy sticking to rollers and contamination. Modularizing the spraying device and placing it in the post-application stage to achieve linear speed linkage and quantitative control is more conducive to low liquid carryover, uniform fragrance retention, and reduced fragrance consumption.

[0139] Fabric: Lightweight polyester fabric (approximately 90 g / m², width 180 cm, thickness 0.20 mm, residual moisture content after setting ≤2%). This device is installed 52 after the setting machine exit. Zoning: Left / Center / Right three zones.

[0140] 1) Finishing solution formulation

[0141] Flavor microcapsule dispersion (solid content approximately 30%): 30 g / L

[0142] Film-forming binder (flexible aqueous polymer, solids content approximately 25–35%): 10 g / L

[0143] Crosslinking agent: 2 g / L

[0144] Wetting agent: 0.5 g / L

[0145] Defoamer: 0.2 g / L

[0146] Water: Replenish

[0147] 2) Process parameters

[0148] Linear speed v: 25 m / min

[0149] A set 18 g / m²

[0150] Partition compensation: K L =1.03, K M =1.00, K R =1.03

[0151] Pulse parameters: f = 40 Hz; Middle zone D M =14%; Border region D L =D R =14.5%

[0152] 3) Comparative Example 3 (Conventional Dipping)

[0153] Fabric: Lightweight polyester fabric (approximately 90 g / m², width 180 cm, thickness 0.20 mm, residual moisture content after setting ≤2%). Equipment: Padding car (or immersion tank + padding car) is located after the setting machine; low-temperature drying may be added if necessary.

[0154] Formula: Same ingredients as in Example 3.

[0155] parameter:

[0156] Rolling allowance: 60–90%

[0157] Linear speed: 15–35 m / min

[0158] 4) Comparison of Results (Table)

[0159]

[0160] Summarize

[0161] The comparison between the above embodiments and the traditional impregnation rolling process shows that:

[0162] 1) This invention uses a nozzle built-in chip + addressing interface 322 to build a partitioned addressable control architecture, so that different width partitions can output different pulse parameters, realize side-center difference compensation, and thus improve the uniformity of the width direction;

[0163] 2) By using linear speed-linked pulse metering, the amount applied per unit area can remain stable even under speed-changing or fluctuating operating conditions, reducing the fluctuation in the consistency between functional indicators and appearance.

[0164] 3) By using a filter / microfilter + reflux drainage + bypass online flushing and quick-release structure, the reliability of continuous operation of systems containing particles / high solids content is improved and maintenance downtime is reduced;

[0165] 4) The device can be modularly installed in front of or behind the stenter, adapting to front- or rear-mounted finishing, improving the applicability and economy of production line modification.

[0166] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A linear velocity-linked zone-addressing pulse jet finishing device, characterized in that, It includes a frame (1), a continuous fabric conveying assembly (2), a spray finishing assembly (3), and an electrical control assembly (4); The continuous fabric conveying assembly (2) is used to drive the fabric to run continuously and form a surface to be processed (S). The spray finishing assembly (3) includes a nozzle mounting beam (31), a liquid supply main pipe (33), a distribution pipe (34), and multiple pulse nozzles (32) arranged along the width direction. Each of the pulse nozzles (32) has a built-in nozzle chip (321) and each of the pulse nozzles (32) has an addressing interface (322) that is electrically connected to the nozzle chip (321). The electronic control component (4) includes a linear speed detection unit (23) and a nozzle drive control unit (41). The linear speed detection unit (23) is used to acquire the linear speed signal of the fabric, and the nozzle drive control unit (41) is electrically connected to each of the addressing interfaces (322). The nozzle drive control unit (41) is configured to generate pulse drive parameters based on the fabric linear speed signal, and to address and drive the plurality of pulse nozzles (32) through the addressing interface (322), so that the pulse nozzles (32) in different partitions in the width direction output different pulse drive parameters respectively, so as to realize the unit area application amount is adjusted in conjunction with the linear speed and the application amount in the width direction is compensated in partitions.

2. The linear speed linkage zoned addressing pulse jet finishing device according to claim 1, characterized in that: The nozzle chip (321) includes a driver board for receiving addressing information and performing pulse driving. The addressing interface (322) is a bus interface, pin terminal or connector interface, and is used to transmit nozzle address information and / or pulse driving parameters.

3. The linear speed linkage zoned addressing pulse jet finishing device according to claim 1, characterized in that: The nozzle drive control unit (41) implements at least one of the following addressing modes through the addressing interface (322): Addressing driver for a single nozzle; addressing driver for a group of nozzles; addressing driver for nozzles in width zones.

4. The linear speed linkage zoned addressing pulse jet finishing device according to claim 1, characterized in that: Multiple pulse nozzles (32) located in different zones along the width direction form width zones, including at least a left zone, a middle zone, and a right zone, and different zones correspond to different zone compensation coefficients K. i Or different partition target application amount A i .

5. The linear speed linkage zoned addressing pulse jet finishing device according to claim 4, characterized in that: The nozzle drive control unit (41) adjusts the linear velocity v and the target application amount A per unit area based on the linear velocity v and the target application amount A per unit area. set Calculate the target injection volume per unit time and map the target injection volume per unit time to the pulse drive parameters of each zone.

6. The linear speed linkage zoned addressing pulse jet finishing device according to claim 1, characterized in that: The electronic control component (4) includes a human-machine interface (43) for setting the target application amount A per unit area. set and / or partition compensation coefficient K i It is used to select on-demand injection mode and / or zone compensation mode.

7. A linear velocity-linked partitioned addressing pulse jet control method, used to implement the linear velocity-linked partitioned addressing pulse jet finishing device as described in claims 1-6, characterized in that, Includes the following steps: Step 1: Collect the fabric linear velocity v; Step 2: Collect or measure the actual application amount for each zone, and compare the actual application amount for each zone with the target application amount A per unit area. set Determine the compensation coefficient K for each partition based on the deviation. i ; Step 3: Based on the fabric linear velocity v and the target application amount A per unit area set and the compensation coefficient K for each zone i Generate the pulse drive parameters corresponding to each partition; Step 4: Implement independent addressing drive for each zone nozzle through the addressing interface (322), so that each zone nozzle performs pulse spraying according to the corresponding pulse drive parameters, thereby realizing the linkage control of the unit area application amount and linear velocity, as well as the zone compensation of the application amount in the width direction.

8. The linear velocity linkage zone addressing pulse injection control method according to claim 7, characterized in that, In step two: S1. Determine the initial compensation coefficient K for each partition. i =1; Measure the actual wet application rate A per unit area of ​​each zone. i,meas Wherein, the compensation coefficient K of the i-th partition i Through K i =A set / A i,meas Sure; S2, K as needed i Amplitude limiting is applied to avoid excessive correction in a single step; the target wet application amount A for the i-th partition. i,set Through A i,set =K i ×A set Sure.

9. The linear velocity linkage zone addressing pulse injection control method according to claim 7, characterized in that, In step three: Obtain the target wet application amount A for each zone i,set Based on the fabric linear speed v and the partition width W i Number of nozzles N i The pulse drive parameters required for each zone are determined by the single-pulse ejection rate of the nozzle; where the required wet mass flow rate m for the i-th zone is... i Determine by the following formula: m i =(A i,set ×v×W i ) / 60 Where v is in m / min, W i The unit is m, m i The unit is g / s.

10. The linear velocity linkage zone addressing pulse injection control method according to claim 9, characterized in that: Under fixed injection pressure, finishing fluid viscosity, and nozzle conditions, a single nozzle was calibrated to obtain the single-pulse ejection rate mp,100 under 100% duty cycle conditions. Let N be the number of nozzles in the i-th section. i If the pulse frequency is f, then the duty cycle D of this partition is... i Determine by the following formula: D i =m i / (N i ×f×mp,100)。

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