CN109914055B - High-end environment-friendly PU leather base cloth anhydrous dyeing process and production line thereof - Google Patents

Abstract

The high-end environment-friendly PU leather base cloth waterless dyeing process and the production line thereof comprise the following steps of gray fabric in sequence and continuously: cloth feeding → desizing → water washing → drying → color rolling at normal temperature → drying and color development → cropping. The PU leather base cloth anhydrous dyeing process and the production line thereof are ideal in design, each link is operated separately and independently, and the production mode of the production line is formed, so that the production efficiency is greatly improved, and 50% of labor can be reduced. The water consumption is low, the PU leather base fabric can be dyed at normal temperature, the energy is saved, the environment is protected, the dyeing energy consumption is basically equal to zero, the dyeing rate is high, the prepared PU leather base fabric has high strength and no color difference, and the product quality is high. Meanwhile, the labor intensity of workers is reduced, the operation is simpler and more convenient, and the cloth hair and flying flowers, the dirt on the ground and the dirty water are effectively controlled, so that the production environment in a factory building is cleaner.

Description

High-end environment-friendly PU leather base cloth anhydrous dyeing process and production line thereof

Technical Field

The invention relates to the field of textile dyeing and finishing, in particular to a high-end environment-friendly PU leather base cloth waterless dyeing process and a production line thereof.

Background

The development of the industries of Chinese artificial leather and synthetic leather becomes a new industry with considerable development potential, the artificial leather and the synthetic leather develop rapidly, the market widens nowadays, and a variety of leather products with various colors are visible everywhere in daily life, such as interior decoration, sofa fabric, automobile interior decoration, clothes, shoes, bags and the like. Taking PU leather as an example, the PU leather is artificial leather, the lower layer is fabric (cloth) or non-woven material (non-woven fabric), the upper layer is coated with resin, and then the material imitating natural leather is subjected to various post treatments, so the fabric (cloth) or non-woven material (non-woven fabric) of the lower layer is generally called PU leather base cloth, the PU leather base cloth has the characteristics of high strength, high density and high quantification, the comprehensive performance of the PU leather base cloth is superior to that of needled cloth and woven cloth, and the manufactured leather has soft and plump hand feeling, high tensile strength, good air permeability and good simulation effect.

The existing PU leather base cloth generally adopts a dye vat (also called a jig dyeing machine) to carry out desizing, washing and dyeing operation. The existing dye vat mainly comprises a cloth storage tank, a circulating system, a filtering and heat exchanger, a charging barrel (an auxiliary vat), a cloth discharging roller, a cloth placing device and the like. The production process generally comprises the following steps: cloth feeding → desizing → water discharging → water washing → water discharging → high temperature dyeing (remark: the dyes generally adopt sulfur dyes and sodium sulfide) → water discharging → water washing → color fixing softness → water discharging → cloth feeding → drying → cropping. The existing dye vat can realize desizing, washing and dyeing operation on PU leather base cloth, but the integral merging operation of all links has some defects, the existing dye vat is intermittent dyeing operation, the procedures of grey cloth entering and exiting the vat are complicated, the yield of a single dye vat is limited, and the production efficiency is greatly influenced; the existing dye vat needs to operate in a high-temperature environment, the dyeing energy consumption is large, the grey cloth is boiled and dyed in the dye vat for a long time, the strength of the prepared PU leather base cloth is not good, the dyeing rate is not high (generally 60% -70%), the stability of the product quality is not good, the temperature of the dye vat is adjusted frequently and complexly in different links, and the error of manual operation is easy to occur; the existing dye vat has long flow, large water consumption, large discharge capacity, can generate a large amount of sewage, and dye in the dye vat is easy to lose; during the whole dyeing operation, the procedures of grey cloth entering and exiting a cylinder and the like which are frequently carried out manually are needed, so that the air humidity in the factory building is relatively high, and the carrying tools (such as a cloth pushing vehicle and the like) in the factory building are frequently used, so that the flowing speed of the air in the factory building is increased, the black miasma in the factory building and the universal stains on the ground are easily caused, the air smell in the factory building is also unpleasant (hydrogen sulfide gas can be generated), and the production environment in the factory building is seriously influenced.

Disclosure of Invention

The invention provides a high-end environment-friendly PU leather base cloth anhydrous dyeing process and a production line thereof, aiming at overcoming the defects of unsatisfactory dyeing mode, low production efficiency, high energy consumption, low product quality, high sewage discharge and the like of the existing PU leather base cloth.

In order to solve the technical problems, the technical scheme of the invention is as follows:

the high-end environment-friendly PU leather base cloth anhydrous dyeing process comprises the following steps of gray fabric in sequence and continuously:

a) and (4) feeding, namely performing open-width feeding on the folded and stacked grey cloth.

b) Desizing, namely removing the sizing agent on the flat grey cloth.

c) And (4) washing, namely continuously washing the desized grey cloth.

d) And (5) drying, namely drying the washed grey cloth.

e) And (2) carrying out normal-temperature color rolling, and dyeing the dried grey cloth at normal temperature through color paste, wherein the color paste consists of a dispersed filter cake and an integrated auxiliary agent, and the proportion of the dispersed filter cake to the integrated auxiliary agent is 1: 3-5; the integrated auxiliary agent comprises, by weight, 15-25 parts of oleic acid polyoxyethylene ether, 10-15 parts of lauryl alcohol polyoxyethylene ether, 20-30 parts of isomeric tridecanol polyoxyethylene ether, 35-45 parts of lignosulfonate and 5-10 parts of a water softener.

f) And (3) drying and coloring, namely continuously drying the color-rolled grey cloth until the dyeing on the grey cloth is stable, wherein the dye-uptake rate can reach 100%.

g) And (4) dropping, namely orderly winding and collecting the grey cloth after color development.

And c, the flat-width grey cloth in the step a needs to be subjected to fluff removing treatment on the front surface and the back surface.

In the step b, at least two times of continuous desizing treatment are carried out on the grey cloth after the width is expanded, and after each desizing treatment, the grey cloth needs to be subjected to rolling and rolling drying treatment; and c, performing continuous washing treatment on the desized grey cloth for at least two times, and performing rolling and rolling drying treatment on the grey cloth after each washing treatment.

And e, before the normal-temperature color rolling, temporary storage and stacking treatment are carried out on the dried grey cloth.

The high-end environment-friendly PU leather base cloth waterless dyeing production line comprises an open-width cloth feeding frame, a desizing washing machine, a first drying cylinder drying machine, a temporary storage stacking frame, a continuous color rolling machine, a second drying cylinder drying machine and a cloth dropping frame, wherein gray cloth passes through the open-width cloth feeding frame, the desizing washing machine, the first drying cylinder drying machine, the temporary storage stacking frame, the continuous color rolling machine, the second drying cylinder drying machine and the cloth dropping frame in sequence and continuously; the open width cloth feeding frame comprises a frame, and an expanding roller set, a cloth guide roller, a fluff remover, a cloth tightener and a cloth outlet roller which are arranged on the frame along a grey cloth advancing path, wherein the fluff remover comprises a dust hood, a main pipeline and left and right branch pipelines, the dust hood penetrates through the inside of the grey cloth and removes fluff on the front surface and the back surface of the grey cloth, the main pipeline is provided with a dust collector, the left branch pipeline and the right branch pipeline are communicated with the left side wall and the right side wall of the dust hood correspondingly, and the left branch pipeline and the right branch pipeline are communicated with the left side wall and the right side wall of the dust hood correspondingly respectively.

The dust hood is in a transversely-arranged elliptic cylinder shape and has an inner layer structure and an outer layer structure, the inner layer is an inner cover, the outer layer is an outer cover, the upper top surface and the lower bottom surface of the outer cover are both provided with strip-shaped outer openings through which grey cloth passes, the left side wall and the right side wall of the inner cover are both provided with discharge ports communicated with the inside of the outer cover, the left side wall and the right side wall of the outer cover are respectively provided with mounting ports communicated with a left branch pipeline and a right branch pipeline, the upper top surface and the lower bottom surface of the inner cover are both provided with strip-shaped inner openings through which the grey cloth passes, the caliber of each strip-shaped outer opening is larger than that of each strip-shaped inner opening, and the caliber of each strip-shaped inner opening is equal to or slightly larger than the thickness of the grey cloth.

The desizing washing machine comprises a strip-shaped horizontal frame, a desizing unit and a washing unit, wherein the desizing unit and the washing unit are arranged in the horizontal frame and arranged in front and back, the desizing unit comprises a plurality of desizing groove bodies which are sequentially arranged in a close manner and used for containing desizing agent solution, and a plurality of first roll assemblies which are matched with the plurality of desizing groove bodies in a one-to-one correspondence manner, an upper cloth guide roller and a lower cloth guide roller which are sequentially arranged in the length direction of each desizing groove body in a staggered manner at intervals from top to bottom are arranged in each desizing groove body, and each first roll assembly is positioned on the rear section part corresponding to the top surface of each desizing groove body; the washing unit comprises a plurality of washing tank bodies which are arranged in sequence and are used for containing clean water, and a plurality of second roll assemblies which are matched with the washing tank bodies in a one-to-one correspondence mode, wherein an upper cloth guide roller and a lower cloth guide roller which are arranged in a staggered mode at intervals up and down in sequence along the length direction of each washing tank body are arranged in each washing tank body.

The first drying cylinder drying machine and the second drying cylinder drying machine comprise drying frames, and a cloth feeding mechanism, a cloth discharging mechanism, a steam heat-conducting drying cylinder group, a transmission device and a power device which are arranged on the drying frames, wherein the cloth feeding mechanism and the cloth discharging mechanism are respectively positioned on two sides of the drying frames, the steam heat-conducting drying cylinder group is three pairs of four pairs of steam heat-conducting drying cylinders which are staggered and tangent, and the centers of the four pairs of steam heat-conducting drying cylinders are positioned on the same straight line.

Further, the temporary storage stacking rack comprises a groove body with a semicircular section and a supporting groove body, two movable rollers which are oppositely arranged are arranged on one side part of the groove body, a gap channel through which a single-layer grey fabric passes is formed between the two movable rollers, and the width of the gap channel is equal to or slightly larger than the thickness of the grey fabric.

The continuous color rolling machine comprises a color rolling frame body, a dyeing tank body and a roller mechanism, wherein the dyeing tank body is arranged on the color rolling frame body and is used for containing color paste, the roller mechanism is positioned at the rear part of the dyeing tank body, a plurality of upper cloth guide rollers and a plurality of lower cloth guide rollers which are staggered up and down at intervals are arranged on the color rolling frame body, the upper cloth guide rollers are positioned above the dyeing tank body, and the lower cloth guide rollers are positioned in the dyeing tank body; the rolling mechanism comprises a dyeing roller arranged on the rolling color frame body, a driven upper roller, a driving middle roller, a driven lower roller and a power device for driving the driving middle roller to rotate, wherein the driven upper roller, the driving middle roller, the driven lower roller and the power device are longitudinally arranged, a first channel through which dyed grey cloth passes is formed between the driving middle roller and the driven lower roller, and a second channel through which the dyed grey cloth passes is formed between the driven upper roller and the driving middle roller.

From the above description of the present invention, it can be seen that the advantages of the present invention over the prior art are: the PU leather base cloth anhydrous dyeing process and the production line thereof are ideal in design, each link is operated separately and independently, and the production mode of the production line is formed, so that the production efficiency is greatly improved, and 50% of labor can be reduced. The water consumption is low (the water consumption is 10-20% of that of the traditional process), only the water is used in the washing step, the washing step and the desizing step are independently separated, and the washing water (such as simple filtration treatment) can be recycled. The process adopts the specially prepared color paste for dyeing, only needs normal temperature, saves energy and protects environment, the dyeing energy consumption is basically equal to zero, the dye-uptake rate is high (can reach 100 percent), the prepared PU leather base cloth has good strength, no color difference and excellent product quality. During the whole dyeing operation, workers do not need to frequently go into and out of the cylinder of the grey cloth, the labor intensity of the workers is reduced, the operation is simpler and more convenient, and the cloth hair flying, the dirt on the ground and the dirty water are effectively controlled, so that the production environment in a factory building is cleaner, and the production environment in the factory is essentially changed.

Drawings

FIG. 1 is a schematic diagram of the present invention.

Fig. 2 is a schematic diagram of the combination of the open-width cloth feeding stand and the desizing unit in the invention.

FIG. 3 is a schematic front view of the lint picker of the open width cloth feeding frame of the present invention, wherein the dust hood is cut away.

FIG. 4 is a schematic top view of a dust hood of the lint picker of the present invention.

FIG. 5 is a schematic view of a desizing and washing machine of the present invention.

FIG. 6 is a schematic view of a first cylinder dryer of the present invention.

Fig. 7 is a front view of the temporary storage and stacking rack of the present invention.

Fig. 8 is a schematic top view of a temporary storage and stacking rack of the present invention.

Fig. 9 is a schematic front view of the continuous padding machine according to the present invention.

FIG. 10 is a schematic view of a dye tank in the continuous padding machine according to the present invention.

FIG. 11 is a block diagram of the control flow of the automatic feeding device in the continuous color press of the present invention.

FIG. 12 is a schematic view of the cooperation between the second cylinder dryer and the doffer of the present invention.

Fig. 13 is a partially enlarged schematic view of a portion a of fig. 12.

Fig. 14 is a partially enlarged schematic view at B in fig. 12.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

The high-end environment-friendly PU leather base cloth anhydrous dyeing process comprises the following steps of gray fabric in sequence and continuously: a) feeding, namely performing open-width feeding on the folded and stacked grey cloth; the fabric after the open width is also required to be subjected to the fluff removing treatment on the front and back surfaces.

b) Desizing, namely removing sizing agent on the flat gray fabric; the method comprises the following steps of carrying out continuous desizing treatment on the open-width grey cloth for at least two times, and carrying out rolling and rolling drying treatment on the grey cloth after each desizing treatment.

c) Washing, namely continuously washing the desized grey cloth; and carrying out continuous washing treatment on the desized grey cloth at least twice, and carrying out rolling and rolling drying treatment on the grey cloth after each washing treatment.

d) And (5) drying, namely drying the washed grey cloth.

e) Temporarily storing, namely temporarily storing and stacking the dried grey cloth.

f) And (2) carrying out normal-temperature color rolling, and dyeing the dried grey cloth at normal temperature through color paste, wherein the color paste consists of a dispersed filter cake and an integrated auxiliary agent, and the proportion of the dispersed filter cake to the integrated auxiliary agent is 1: 4; the integrated auxiliary agent comprises, by weight, 20 parts of oleic acid polyoxyethylene ether, 12 parts of lauryl alcohol polyoxyethylene ether, 25 parts of isomeric tridecanol polyoxyethylene ether, 40 parts of lignosulfonate and 8 parts of water softener.

g) Drying and color development, namely continuously drying the color-rolled grey cloth until the dyeing on the grey cloth is stable, wherein the dye uptake can reach 100%; and drying the grey cloth by adopting a drying cylinder drying machine to develop color.

h) And (4) dropping, namely orderly winding and collecting the grey cloth after color development.

In addition, the proportion of the dispersed filter cake of the color paste to the integral auxiliary agent can also be 1: 3. the integrated auxiliary agent comprises 15 parts of oleic acid polyoxyethylene ether, 15 parts of lauryl alcohol polyoxyethylene ether, 20 parts of isomeric tridecanol polyoxyethylene ether, 45 parts of lignosulfonate and 5 parts of water softener according to weight percentage. The proportion of the dispersed filter cake of the color paste to the integral auxiliary agent can also be 1: 5. the integrated auxiliary agent comprises 25 parts of oleic acid polyoxyethylene ether, 10 parts of lauryl alcohol polyoxyethylene ether, 30 parts of isomeric tridecanol polyoxyethylene ether, 35 parts of lignosulfonate and 10 parts of water softener according to weight percentage.

Reference is made to figures 1, 2 and 3. The high-end environment-friendly PU leather base cloth waterless dyeing production line comprises an open-width cloth feeding frame 1, a desizing and washing machine 2, a first drying cylinder drying machine 3, a temporary storage stacking frame 4, a continuous color rolling machine 5, a second drying cylinder drying machine 6 and a cloth dropping frame 7, wherein gray cloth 8 sequentially and continuously passes through; the open width cloth feeding frame 1 comprises a frame 10, and an expanding roller group 11, a cloth guide roller 12, a fluff remover 13, a cloth tightener 14 and a cloth outlet roller 15 which are arranged on the frame 10 along the traveling path of the grey cloth, wherein the fluff remover 13 comprises a dust hood 131, a main pipeline 132 and left and right branch pipelines 133 and 134, the dust hood 131 penetrates through the grey cloth 8 from the inside and removes fluff on the front surface and the back surface of the grey cloth 8, the main pipeline 132 is provided with a dust collector, the left and right branch pipelines are communicated with the main pipeline 132, and the left and right branch pipelines 133 and 134 are respectively and correspondingly communicated with the left and right side walls of the dust hood 131. Due to the design of the fluff remover 13, fluff, dust and other sundries on the grey cloth 8 can be effectively removed, and the fluff, dust and other sundries are prevented from entering the desizing and washing machine 2 to damage a roll assembly or influence the quality of the PU leather base cloth.

Reference is made to fig. 2, 3 and 4. The dust hood 131 is in a transversely-arranged elliptic cylinder shape and has an inner-layer structure and an outer-layer structure, the inner layer is an inner cover 135, the outer layer is an outer cover 136, the upper top surface and the lower bottom surface of the outer cover 136 are both provided with strip-shaped outer openings 137 through which grey cloth passes, the left side wall and the right side wall of the inner cover 135 are both provided with discharge openings communicated with the inside of the outer cover 136, the left side wall and the right side wall of the outer cover 136 are respectively provided with mounting openings communicated with the left branch pipeline 133 and the right branch pipeline 134, the upper top surface and the lower bottom surface of the inner cover 135 are both provided with strip-shaped inner openings 138 through which the grey cloth passes, the caliber of the strip-shaped outer openings 137 is larger than that of the strip-shaped inner openings 138, and the caliber of the strip-shaped inner openings 138 is equal to or slightly larger than the thickness of the grey cloth 8. The inner and outer layers of the dust hood 131 greatly improve the efficiency of removing the fluff, dust and other impurities on the grey cloth 8, and when the grey cloth 8 passes through the inner hood 135, part of the fluff, dust and other impurities can fly out from the strip-shaped inner opening 138 due to the friction or extrusion effect of the strip-shaped inner opening 138, and at the moment, due to the protection effect of the outer hood 136, the fluff, dust and other impurities can be sucked into the main pipeline 132 along the left branch pipeline 133 and the right branch pipeline 134 and then discharged. Can effectively prevent sundries such as fluff, dust and the like from flying in the factory building, so that the production environment in the factory building is cleaner.

Reference is made to figures 1, 2 and 5. The desizing and washing machine 2 comprises a strip-shaped horizontal frame 20, and a desizing unit and a washing unit which are arranged in the horizontal frame 20 and arranged in front and back, wherein the desizing unit comprises three desizing groove bodies 21 which are sequentially arranged in an abutting mode and used for containing desizing agent solution, and three first roll assemblies 22 which are matched with the three desizing groove bodies 21 in a one-to-one correspondence mode. The water washing unit comprises three water washing groove bodies 24 which are arranged closely in sequence and used for containing clean water and three second roll assemblies 25 which are correspondingly matched with the three water washing groove bodies 24 one by one. The desizing and washing machine adopts three times of continuous desizing and three times of washing, and is matched with the operation of carrying out one-time rolling drying on the gray fabric after one-time desizing, and the operation of carrying out one-time rolling drying on the gray fabric after one-time washing, so that the efficiency and the effect of desizing and washing the gray fabric are improved.

Reference is made to fig. 2 and 5. An upper cloth guide roller 211 and a lower cloth guide roller 212 which are sequentially arranged in a staggered manner at intervals up and down along the length direction of each desizing slot body 21 are arranged in each desizing slot body 21, and each first roll assembly 22 is positioned on the rear section part corresponding to the top surface of the desizing slot body 21. A steam heating pipe 213 for heating the desizing agent solution is further arranged in each desizing tank body 21, the steam heating pipe 213 is positioned below the lower cloth guide roller 212, and a first top cover 23 for preventing heat dissipation is covered at the notch of each desizing tank body 21. This first top cap 23's design plays certain thermal-insulated effect of keeping warm to desizing agent solution, prevents that heat from the notch effluvium in every desizing cell body 21, the energy saving. Each desizing tank body 21 is provided with a feeding pipe 214 for adding desizing agent solution into the desizing tank body, a solution overflow port 215 for preventing the desizing agent solution from overflowing, and a sewage discharge cleaning port 216 positioned at the bottom of the desizing tank body, each of the three first roll assemblies 22 comprises a roll frame body 221, a first front guide roll 222 arranged on the roll frame body 221, a main roll 223 and an auxiliary roll 224 which are arranged up and down, and a first power device 225 for driving the main roll 223 to rotate so as to drive the grey cloth 8 to transmit forwards, wherein the first power device 225 comprises a motor and a speed reducer connected with an output shaft of the motor, and the main roll 223 is in transmission connection with an output shaft of the motor through the speed reducer.

In addition, the number of the desizing trough bodies 21 can also be two or four, and the like, and the number of the first roll assemblies 22 can also be two or four, and the like.

Reference is made to fig. 2 and 5. An upper cloth guide roller 241 and a lower cloth guide roller 242 which are arranged in a staggered manner at intervals up and down along the length direction of each washing tank body 24 are arranged in each washing tank body. Still be equipped with the steam heating pipe 243 that is used for heating clear water solution in every wash tank body 24, this steam heating pipe 243 is located the below of cloth guide roller down, and the notch department lid of every wash tank body 24 is equipped with the second top cap 25 that is used for preventing the heat and scatters, and the design of this second top cap 25 plays certain heat preservation thermal-insulated effect to clear water solution, prevents that heat from scattering out from the notch department in every wash tank body 24, energy saving. Each of the wash tanks 24 is provided with an inlet pipe 244 to which clean water is added, a clean water overflow port to prevent the overflow of the clean water, and a drain outlet 246 at the bottom thereof. The first two second roll assemblies 25 are substantially identical in composition to the first roll assembly 22 and therefore their internal structure will not be described in detail; the latter second roll assembly 25 includes a roll frame body 251, and a water outlet roll 252 mounted on the roll frame body 251, a driven upper roll 253 arranged in a longitudinal direction, a driving middle roll 254, a driven lower roll 255, and a power unit 256 for driving the driving middle roll 254 to rotate, a first passage through which the washed blank fabric 8 passes is formed between the driving middle roll 254 and the driven lower roll 255, and a second passage through which the washed blank fabric passes is formed between the driven upper roll and the driving middle roll.

In addition, the number of the water washing tanks 24 may be two or four, and the like, and the number of the second roll assemblies 25 may be two or four, and the like.

Reference is made to figures 1, 6 and 13 of the drawings. The first drying cylinder drying machine 3 and the second drying cylinder drying machine 6 both comprise a drying rack 30, a cloth feeding mechanism 31, a cloth discharging mechanism 32, a steam heat-conducting drying cylinder group 33 and a power device for driving the steam heat-conducting drying cylinder group to operate, wherein the cloth feeding mechanism 31, the cloth discharging mechanism 32, the steam heat-conducting drying cylinder group 33 and the power device are arranged on the drying rack 30, the power device comprises a variable frequency motor 37 and a transmission device, the power device drives the steam heat-conducting drying cylinder group to operate as a common prior art, the internal structure and the action principle of the steam heat-conducting drying cylinder group are not detailed herein, the cloth feeding mechanism 31 and the cloth discharging mechanism 32 are respectively positioned on two sides of the drying rack 30, the steam heat-conducting drying cylinder group 33 is three pairs of every pair of four staggered and tangent steam heat-conducting drying cylinders 330, and the centers of every pair of four steam heat-conducting drying cylinders 330 are positioned on the same straight line.

Reference is made to figures 1, 12 and 13. The number of the steam heat-conducting dryer groups 33 of the second drying cylinder dryer 6 is three, a first balance adjusting assembly 34 is arranged between the first steam heat-conducting dryer group 33 and the second steam heat-conducting dryer group 33, a second balance adjusting assembly 35 is arranged between the second steam heat-conducting dryer group 33 and the third steam heat-conducting dryer group 33, the first balance adjusting assembly 34 is positioned at the lower part of the drying rack 30, and the second balance adjusting assembly 35 is positioned at the upper part of the drying rack 30. The first and second balance adjusting parts 34, 35 each include a base 360 fixed on the drying rack 30, a swing rod 361 movably connected to the base 360, a cloth guide roller 362 mounted on both ends of the swing rod 361, a swing shaft 363 connected to the middle of the swing rod 361, and a cylinder 364 driving the swing shaft 363 to rotate and horizontally arranged, and a piston rod of the cylinder 364 is connected to the swing shaft 363.

Reference is made to figures 1, 12 and 14 of the drawings. The cropping frame 7 includes cropping frame 70 and sets gradually fabric guide roller 71, cropping roller 72 and swing frame 73 along the cloth outlet direction on cropping frame 70, cropping roller 72 rotates under the drive of motor 74, set up drive roll 731 and cloth pressing roller 732 on the swing frame 73, cropping frame 7 is still including installing fan 75 that cools down on cropping frame 70 and to the leather base cloth surface, and this fan 75 is located between fabric guide roller 71 and the cropping roller 72. Because the temperature of the PU leather base cloth from the second drying cylinder drying machine 6 is generally higher, the design of the fan 75 is adopted, so that the surface of the PU leather base cloth is cooled in the conveying process, and the influence of local color difference and wrinkle change on the product quality caused by overhigh temperature of the PU leather base cloth stacked in the material receiving vehicle 76 is avoided.

Reference is made to figures 1, 7 and 8. The temporary storage and stacking rack 4 comprises a groove body 40 with a semicircular cross section and a supporting groove body 41, wherein one side part of the groove body 40 is provided with two movable rollers 42 and 43 which are oppositely arranged, a gap channel 44 for a single-layer blank 8 to pass through is formed between the two movable rollers 42 and 43, and the width of the gap channel 44 is equal to or slightly larger than the thickness of the blank 8. This design of piling bin 4 of keeping in divide into the first half section and the second half section of mutual independent control with whole production line, if first half section equipment breaks down temporarily, owing to have the grey cloth of piling of keeping in piling bin 4 of keeping in, can not influence the operation of second half section equipment at once, has improved the practicality that the production line used. The design of the two movable rollers 42 and 43 ensures that the phenomenon of wrinkling and even bonding can not occur before the grey cloth enters the continuous padding machine, thereby greatly improving the effect of dyeing the grey cloth by the color paste.

Reference is made to figures 1 and 9 of the drawings. The continuous color rolling machine 5 comprises a color rolling frame body 50, a dyeing tank body 51 which is arranged on the color rolling frame body 50 and is used for containing color paste, and a rolling mechanism 52 which is positioned at the rear part of the dyeing tank body 51, wherein a plurality of upper cloth guide rollers 52 and a plurality of lower cloth guide rollers 53 which are staggered up and down at intervals are arranged on the color rolling frame body 50, the plurality of upper cloth guide rollers 52 are positioned above the dyeing tank body 51, and the plurality of lower cloth guide rollers 53 are positioned in the dyeing tank body 51; the nip roller mechanism 52 comprises a dyeing roller 520 mounted on the color-rolling frame body 50, a driven upper nip roller 521, a driving middle nip roller 522, a driven lower nip roller 523 and a power device 524 for driving the driving middle nip roller to rotate 522, wherein a first passage through which the dyed gray fabric passes is formed between the driving middle nip roller 522 and the driven lower nip roller 523, and a second passage through which the dyed gray fabric passes is formed between the driven upper nip roller 521 and the driving middle nip roller 522. This roll in succession look machine 5 adopts the integrative structure of rolling the look after dyeing before, and dyeing effect is good, and the structure is more firm moreover.

Reference is made to fig. 9 and 10. The dyeing tank body 51 comprises a front half section 511 for dyeing grey cloth and a rear half section 512 for receiving redundant color paste rolled by the roller mechanism 52, the plurality of lower cloth guide rollers 53 are positioned in the front half section of the dyeing tank body 51, and the dyeing roller 520, the driven upper roller 521, the driving middle roller 522 and the driven lower roller 523 are all positioned above the rear half section 512 of the dyeing tank body. By adopting the design of the dyeing tank body 51, the waste phenomenon of color paste in the continuous color rolling link is effectively avoided, and the material cost is saved.

Reference is made to figures 1, 9 and 11. The continuous color press 5 further comprises an automatic feeding device, the automatic feeding device comprises a color paste storage container 550, a liquid level sensor 551 positioned in the dyeing tank body 51, a feeding water pump 552 for pumping the color paste in the color paste storage container 550 into the dyeing tank body 51, and a controller 553 for controlling the operation of the water pump 552, and the liquid level sensor 551 is electrically connected with the controller 553. The design of the automatic feeding device is adopted, so that the color paste amount is more accurately added into the dyeing tank body 51, the error caused by manual observation of the amount is avoided, and the waste of the color paste amount is also avoided.

The design concept of the present invention is only the specific embodiment of the present invention, but the present invention is not limited to the specific embodiment, and any insubstantial modification of the present invention using the design concept shall fall within the behavior of infringing the protection scope of the present invention.

Claims (4)

1. High-end environmental protection PU leather base cloth anhydrous dyeing production line, its characterized in that: the continuous dyeing and finishing machine comprises an open-width cloth feeding frame, a desizing and washing machine, a first drying cylinder drying machine, a temporary storage stacking frame, a continuous dyeing machine, a second drying cylinder drying machine and a cloth dropping frame, wherein gray cloth sequentially and continuously passes through the open-width cloth feeding frame, the desizing and washing machine, the first drying cylinder drying machine, the temporary storage stacking frame, the continuous dyeing machine, the second drying cylinder drying machine and the cloth dropping frame; the open width cloth feeding frame comprises a frame, and an expanding roller set, a cloth guide roller, a fluff remover, a cloth tightener and a cloth outlet roller which are arranged on the frame along the advancing path of the grey cloth, wherein the fluff remover comprises a dust hood, a main pipeline and left and right branch pipelines, the dust hood penetrates through the inside of the grey cloth and removes fluff on the front surface and the back surface of the grey cloth, the main pipeline is provided with a dust collector, the left branch pipeline and the right branch pipeline are communicated with the left side wall and the right side wall of the dust hood correspondingly; the dust hood is in a transversely-arranged elliptic cylinder shape and has an inner-layer structure and an outer-layer structure, the inner layer is an inner hood, the outer layer is an outer hood, the upper top surface and the lower bottom surface of the outer hood are both provided with strip-shaped outer openings through which grey cloth passes, the left side wall and the right side wall of the inner hood are both provided with discharge ports communicated with the interior of the outer hood, the left side wall and the right side wall of the outer hood are respectively provided with mounting openings communicated with a left branch pipeline and a right branch pipeline, the upper top surface and the lower bottom surface of the inner hood are both provided with strip-shaped inner openings through which the grey cloth passes, the caliber of each strip-shaped outer opening is larger than that of each strip-shaped inner opening, and the caliber of each strip-shaped inner opening is equal to or slightly larger than the thickness of the grey cloth; the desizing and washing machine comprises a strip-shaped horizontal frame, a desizing unit and a washing unit, wherein the desizing unit and the washing unit are arranged in the horizontal frame in a front-back manner, the desizing unit comprises a plurality of desizing groove bodies which are arranged next to each other in sequence and used for containing desizing agent solution, and a plurality of first roll assemblies which are matched with the plurality of desizing groove bodies in a one-to-one correspondence manner, an upper cloth guide roller and a lower cloth guide roller which are arranged in a staggered manner at intervals up and down along the length direction of each desizing groove body are arranged in each desizing groove body, and each first roll assembly is positioned on the rear section part corresponding to the top surface of the desizing groove body; the washing unit is including in proper order near arranging and being used for holding a plurality of washing cell bodies of clear water and with a plurality of second roll assembly of a plurality of washing cell body one-to-one matched with, be equipped with in every washing cell body along its length direction in proper order about interval stagger arrange go up fabric guide roller and fabric guide roller down, still be equipped with in every desizing cell body and be used for carrying out the steam heating pipe that heats to desizing agent solution, this steam heating pipe is located the below of fabric guide roller down, the notch department lid of every desizing cell body is equipped with the first top cap that is used for preventing heat loss.

2. The high-end environment-friendly PU leather base cloth waterless dyeing production line of claim 1, wherein: first drying cylinder drying machine and second drying cylinder drying machine all include the drying frame and install the cloth feeding mechanism, go out cloth mechanism, steam heat conduction dryer group, transmission and power device in the drying frame, cloth feeding mechanism and play cloth mechanism are located the both sides of drying frame respectively, steam heat conduction dryer group is three to every crisscross tangent to four steam heat conduction dryer, and every center to four steam heat conduction dryer is in same straight line.

3. The high-end environment-friendly PU leather base cloth waterless dyeing production line of claim 1, wherein: the temporary storage stacking rack comprises a groove body with a semicircular section and a supporting groove body, two movable rollers which are oppositely arranged are arranged on one side part of the groove body, a clearance channel through which a single-layer grey cloth passes is formed between the two movable rollers, and the width of the clearance channel is equal to or slightly larger than the thickness of the grey cloth.

4. The high-end environment-friendly PU leather base cloth waterless dyeing production line of claim 1, wherein: the continuous color rolling machine comprises a color rolling frame body, a dyeing tank body and a roller mechanism, wherein the dyeing tank body is arranged on the color rolling frame body and is used for containing color paste, the roller mechanism is positioned at the rear part of the dyeing tank body, a plurality of upper cloth guide rollers and a plurality of lower cloth guide rollers are arranged on the color rolling frame body in a vertically staggered mode at intervals, the upper cloth guide rollers are positioned above the dyeing tank body, and the lower cloth guide rollers are positioned in the dyeing tank body; the rolling mechanism comprises a dyeing roller arranged on the rolling color frame body, a driven upper roller, a driving middle roller, a driven lower roller and a power device for driving the driving middle roller to rotate, wherein the driven upper roller, the driving middle roller, the driven lower roller and the power device are longitudinally arranged, a first channel through which dyed grey cloth passes is formed between the driving middle roller and the driven lower roller, and a second channel through which the dyed grey cloth passes is formed between the driven upper roller and the driving middle roller.

Images