Fabric desizing, scouring and bleaching production method and device

Abstract

The invention discloses a fabric desizing, scouring and bleaching production method and device, and particularly relates to the technical field of fabric printing and dyeing equipment.The fabric desizing, scouring and bleaching production device comprises a placement table, a pushing device is arranged on the other side of the outer surface of a cleaning box, and three cleaning devices are arranged in the middle of an inner cavity of the cleaning box; the two ends of the three cleaning devices and the two ends of the two limiting rollers extend out of the cleaning box, and desizing, scouring and bleaching combination machines are sequentially arranged on the side, away from the containing table, of the cleaning box. According to the fabric desizing, scouring and bleaching production device, by arranging the pushing device and the cleaning device, when the motor drives the cleaning device to rotate, the motor can drive the pushing device to operate through the limiting roller, so that the pushing device can push and pull cleaning pieces on the two sides in the cleaning device to move in a reciprocating mode, and when the cleaning pieces on the two sides move in a reciprocating mode, the cleaning pieces on the two sides move in a reciprocating mode. The fabric can be stretched, and the situation that the fabric wrinkles and enters the next stage, and the fabric treatment effect is further affected is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of fabric printing and dyeing equipment, in particular to a fabric descaling and bleaching production device. Background Art

[0002] The fabric desizing, scouring and bleaching production device is a device used for desizing, scouring and bleaching fabrics. It is mainly composed of a cloth feeding device, a desizing, scouring and bleaching combined machine, a washing device and a cloth discharging device. In this process, it is mainly divided into three steps: desizing, scouring and bleaching.

[0003] Chinese patent publication number CN111748951 B discloses a dyeing and finishing, singeing, descaling, boiling and bleaching integrated production device, including a singeing machine, an auxiliary agent application machine matched with the singeing machine is provided on one side of the singeing machine, a material guide rack is provided on the side of the auxiliary agent application machine away from the singeing machine, a guide belt drive type cold stacking device matched with the guide belt drive type cold stacking device is provided on the side of the guide belt drive type cold stacking device away from the guide belt, a first desizing machine is provided on the side of the first desizing machine away from the guide belt drive type cold stacking device, and a hot water tank matched with the oxygen bleaching rack is provided inside the oxygen bleaching rack. The device effectively ensures that the equipment can realize multiple desizing treatments, and utilizes multiple The desizing and scouring can better remove fiber impurities (natural impurities, artificial impurities). The equipment can make it more flexible in the cold stacking process through the adjustment of its own structure. The long-distance and large-area rolling and the adjustment of the rolling pressure can better carry out the liquid rolling treatment and achieve better results. However, in actual use, the device cannot clean the impurities on the surface of the fabric before the fabric enters the corresponding processing device, and when cleaning the surface of the fabric, the fabric cannot be flattened, resulting in the fabric entering the corresponding processing device with wrinkles, affecting the processing effect of the fabric. Summary of the invention

[0004] The main purpose of the present invention is to provide a method and device for producing fabric descaling and bleaching, which can effectively solve the problem that impurities on the surface of the fabric cannot be cleaned before the fabric enters the corresponding processing device, and the fabric cannot be flattened when the fabric surface is cleaned, resulting in the fabric entering the corresponding processing device in wrinkles, affecting the processing effect of the fabric.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A method for producing fabric descaling and bleaching,

[0007] Step 1: Grey fabric inspection and preparation

[0008] 1. Inspection

[0009] Carefully check the appearance of the grey fabric to see if there are any obvious damage, holes, uneven yarn thickness, etc. For example, for cotton fabrics, pay attention to the distribution of cotton knots and impurities.

[0010] Measuring the basic physical parameters of the grey fabric, including the width, length, and weight per unit area of ​​the fabric, helps determine the process parameters for subsequent processing, such as the amount of chemicals used and the operating speed of the equipment.

[0011] 2. Seam

[0012] Sew the head and tail ends of the grey cloth together smoothly using a special sewing machine. The quality of the seam head is directly related to the stability of the fabric's continuous operation in the equipment. The thickness of the seam head is required to be as consistent as possible with the main body of the grey cloth to avoid cloth jamming, cloth breakage, etc. during processing.

[0013] Step 2: Desizing process

[0014] 1. Selection and preparation of desizing agent

[0015] The desizing agent is selected according to the type of sizing on the grey cloth. If it is a starch sizing, amylase is usually used for desizing. For example, amylase is dissolved in water at a certain concentration (such as 1-3g / L), and an appropriate amount of penetrant (such as 0.5-1g / L JFC penetrant) is added to improve the permeability of the desizing agent.

[0016] For fabrics containing polyvinyl alcohol (PVA) slurry, a desizing solution containing caustic soda (such as 1-2 g / L) and an oxidant (such as 0.5-1 g / L hydrogen peroxide) can be prepared.

[0017] 2. Pad desizing

[0018] The fabric passes through the impregnation mill at an appropriate speed (such as 30-50m / min) to allow the fabric to fully absorb the desizing solution. The liquid pressing rate is generally controlled at 80% to 120%. For example, for thicker cotton fabrics, the liquid pressing rate can be slightly higher, reaching 100% to 120%; for thin chemical fiber fabrics, the liquid pressing rate can be controlled at 80% to 100%.

[0019] 3. Stacking or steam desizing

[0020] Pile desizing: The impregnated fabric is piled for a period of time at a certain temperature. For example, when using amylase for desizing, the fabric is piled at 50-60°C for 30 to 60 minutes to allow the amylase to fully decompose the starch slurry.

[0021] Steaming desizing: The fabric is steamed in a steamer. The steaming temperature is generally 90-100°C and the time is 15 to 30 minutes. Steaming can accelerate the reaction between the desizing agent and the size and improve the desizing efficiency.

[0022] 4. Wash with water

[0023] The fabric after desizing treatment needs to be washed to remove the decomposed sizing agent and desizing agent on the fabric. A multi-grid washing tank can be used for washing. The water temperature is generally reduced from about 80°C to room temperature grid by grid. The washing time for each grid is 3 to 5 minutes. At the same time, an appropriate amount of detergent (such as 0.5-1g / L) can be added during the washing process to enhance the washing effect.

[0024] Step 3: Cooking process

[0025] 1. Preparation of scouring liquid

[0026] The main component of the scouring liquid is caustic soda, and the concentration is generally 10-30g / L. Surfactants (such as 3-5g / L sodium dodecylbenzene sulfonate) and scouring aids (such as 2-3g / L sodium silicate) are also needed. Caustic soda can remove natural impurities such as wax, pectin, protein, etc. on the fabric. Surfactants improve the permeability and emulsification of the scouring liquid. Scouring aids can prevent the fabric from being excessively damaged by caustic soda during the scouring process.

[0027] 2. Scouring operation

[0028] Put the fabric into the scouring equipment (such as scouring pot or continuous scouring machine) and scour it under high temperature and high pressure. The scouring temperature is generally 120-130℃, the pressure is 0.15-0.2MPa, and the scouring time is 1-3 hours. During the scouring process, ensure that the fabric can fully contact with the scouring liquid. The scouring liquid can be continuously circulated through a circulating pump.

[0029] 3. Wash with water after scouring

[0030] The fabric after scouring should be washed to remove residual scouring liquid and impurities. The washing method is similar to the washing after desizing. Countercurrent rinsing can be used to improve washing efficiency. The pH value of the fabric after washing should be close to neutral. The pH value of the fabric can be tested to determine whether the washing is sufficient.

[0031] Step 4: Bleaching process

[0032] 1. Selection and preparation of bleach

[0033] Hydrogen peroxide bleaching: Adjust the pH value of hydrogen peroxide (concentration 2-5g / L) to 10.5-11 with caustic soda, and add stabilizers (such as sodium silicate 1-2g / L) and activators (such as urea 0.5-1g / L). This bleaching method has long-lasting whiteness and causes less damage to fabrics.

[0034] Sodium hypochlorite bleaching: prepare a bleaching solution containing sodium hypochlorite (effective chlorine content 1-3g / L), and add an appropriate amount of alkali (such as soda ash 0.5-1g / L) to adjust the pH value. The pH value is generally controlled at 9-10.5. However, the fabric tends to turn yellow after sodium hypochlorite bleaching, and the damage to the fiber is relatively large.

[0035] 2. Padding bleaching

[0036] The fabric passes through the padding machine at a suitable speed (such as 20-40m / min) so that the fabric absorbs the bleaching solution evenly, and the padding rate is controlled at 90% to 110%.

[0037] 3. Steaming or stacking bleaching

[0038] Steam bleaching: Steam the fabric after padding with bleaching liquid in a steamer at a temperature of 90-100°C for 30 to 60 minutes.

[0039] Pile bleaching: For some fabrics with higher strength requirements, pile bleaching can be used, piling the fabric at 40-50℃ for 2-4 hours.

[0040] 4. Washing and neutralization

[0041] The bleached fabric should be washed to remove residual bleach and reaction products. After washing, it should be neutralized with acid (such as acetic acid 0.5-1g / L) to make the pH value of the fabric reach 6-7, providing suitable pH for subsequent processing.

[0042] Step 5: Post-processing

[0043] 1. Drying

[0044] The fabric is dried by drying equipment (such as a drum dryer). The drying temperature is generally 100-150°C. The drying speed and temperature should be adjusted according to the type and thickness of the fabric. For example, for thin silk fabrics, the drying temperature can be controlled at 100-120°C. For thick cotton fabrics, the drying temperature can be appropriately increased to 130-150°C.

[0045] 2. Organize

[0046] After the fabric is dried, finishing operations such as stretching and shaping can be performed. Stretching can make the width of the fabric reach the specified size, and shaping can improve the dimensional stability and flatness of the fabric. For example, on a stenter, the width of the fabric is stretched to 5% to 10% wider than the grey cloth, and then shaped at a certain temperature (such as 180-200°C) and speed.

[0047] The present invention also discloses a production device for realizing the above-mentioned fabric descaling, boiling and bleaching production method, comprising a placing table, a cleaning box is arranged on one side of the placing table, a motor is arranged on one side of the outer surface of the cleaning box, a pushing device is arranged on the other side of the outer surface of the cleaning box, three cleaning devices are arranged in the middle of the inner cavity of the cleaning box, limiting rollers are arranged on both sides of the lower part of the inner cavity of the cleaning box, both ends of the three cleaning devices and the two limiting rollers extend to the outside of the cleaning box, the same side end faces of the three cleaning devices and the two limiting rollers are connected to the output end of the motor through a belt, and a descaling, boiling and bleaching combined machine is arranged in sequence on the side of the cleaning box away from the placing table.

[0048] Preferably, the pushing device includes a triangular plate and a mounting frame, the mounting frame is fixedly mounted on one side of the upper end of the placing table, the triangular plate is rotatably connected to one end of the three cleaning devices away from the motor, a threaded rod 1 is provided in the middle of the triangular plate, the threaded rod 1 is slidably mounted on the upper part of the outer surface of the mounting frame, a threaded rod 2 is provided at the lower part of the threaded rod 1, the threaded rod 2 is rotatably mounted on the middle part of the outer surface of the mounting frame, the threaded rod 1 and the threaded rod 2 are threadedly connected, a reciprocating mechanism is provided at the lower part of the outer surface of the mounting frame, the outer surface of the threaded rod 2 is connected to the lower side of the reciprocating mechanism by a belt, and the upper part of the outer surface of the reciprocating mechanism is connected to the end surface of the limiting roller away from the side of the placing table by a belt.

[0049] Preferably, the cleaning device includes a mounting cylinder 1, mounting cylinders 2 are provided on both sides of the inner cavity of the mounting cylinder 1, a connecting mechanism is provided on the side of the outer surfaces of the two mounting cylinders 2 that are close to each other, the connecting mechanism is fixedly installed in the middle of the inner cavity of the mounting cylinder 1, a telescopic rod 1 is provided in the middle of the inner cavity of the two mounting cylinders 2, and a plurality of cleaning parts are provided on the outer surfaces of the two telescopic rods 1, and the plurality of cleaning parts extend to the outside of the mounting cylinder 2.

[0050] Preferably, a plurality of limiting holes are provided on both sides of the outer surface of the mounting cylinder one, and the plurality of limiting holes are adapted for use with a plurality of cleaning parts. A transmission rod and a push rod are respectively provided at both ends of the mounting cylinder one. One end face of the transmission rod is connected to the output end of the motor through a belt, the outer surface of the push rod is fixedly connected to the outer surface of the triangular plate, the push rod extends to the interior of the mounting cylinder two on the same side, and the end face of the push rod is fixedly connected to the end face of the telescopic rod one on the same side.

[0051] Preferably, the connecting mechanism includes a two-way telescopic cylinder, both ends of which are fixedly connected to the end faces of the two mounting cylinders, a mounting ring is provided in the middle of the two-way telescopic cylinder, and the mounting ring is fixedly installed in the middle of the inner cavity of the mounting cylinder, a follower is provided in the middle of the inner cavity of the two-way telescopic cylinder, and a pushing member is provided on the outside of the two-way telescopic cylinder, and both ends of the pushing member extend into the inner cavities of the two mounting cylinders.

[0052] Preferably, the pushing member includes two pushing plates, which are respectively slidably installed in the inner cavities of the two mounting tubes, and the middle parts of the two pushing plates are respectively fixedly connected to the outer surfaces of the two telescopic rods, and multiple groups of push handles are provided on the side where the outer surfaces of the two pushing plates are close to each other, and springs are provided in the middle parts of the multiple groups of push handles.

[0053] Preferably, the follower includes a mounting plate, which is fixedly mounted in the middle of the inner cavity of the bidirectional telescopic cylinder, and gears are rotatably mounted on the upper and lower sides of the mounting plate, and the outer surfaces of the two gears are meshed with racks, and the outer surfaces of the four racks are fixedly connected to the end faces of the two mounting cylinders.

[0054] Preferably, the cleaning component includes a cleaning plate, which is slidably installed in the inner wall of the mounting tube 2, and elastic telescopic rods 2 are provided on both sides of one end of the cleaning plate close to the telescopic rod 1, and the two elastic telescopic rods 2 are fixedly installed on the outer surface of the telescopic rod 1, and a sliding rod is provided in the middle of one end of the cleaning plate close to the telescopic rod 1, and limit frames are provided on both sides of the outer surface of the sliding rod, and the two limit frames are fixedly installed on the inner cavity surface of the mounting tube 2.

[0055] Preferably, the limiting frame comprises a fixing frame, the fixing frame is fixedly mounted on the inner cavity surface of the second mounting tube, a slideway is arranged in the middle of the fixing frame, and the slideway is adapted for use with a slide rod.

[0056] Compared with the prior art, the present invention has the following beneficial effects:

[0057] 1. In the present invention, a motor and a cleaning device are provided. When the fabric passes through the cleaning device, the motor drives the cleaning device to rotate, so that the cleaning element in the cleaning device cleans the surface of the fabric, thereby preventing impurities on the fabric from entering the next stage and affecting the treatment effect on the fabric.

[0058] 2. In the present invention, a pushing device and a cleaning device are provided. When the motor drives the cleaning device to rotate, the motor also drives the pushing device to operate through the limiting roller, so that the pushing device can reciprocate and push and pull the cleaning parts on both sides of the cleaning device to move. When the cleaning parts on both sides reciprocate, the fabric can be stretched to prevent fabric wrinkles from entering the next stage and further affecting the treatment effect of the fabric.

[0059] 3. In the present invention, a plurality of cleaning devices and pushing devices can be driven by one motor, so that the cleaning device can achieve the above two different effects, thereby reducing the manufacturing cost of the device and also reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] Figure 1It is a schematic diagram of the overall structure of the present invention;

[0061] Figure 2 The overall structure of the present invention after removing the descaling and bleaching combined machine is shown in FIG. Figure 1 ;

[0062] Figure 3 The overall structure of the present invention after removing the descaling and bleaching combined machine is shown in FIG. Figure 2 ;

[0063] Figure 4 It is a schematic diagram of the assembly of the pushing device of the present invention;

[0064] Figure 5 For the present invention Figure 4 A partial enlarged view of the middle part;

[0065] Figure 6 The cleaning device structure of the present invention is shown in FIG. Figure 1 ;

[0066] Figure 7 The cleaning device structure of the present invention is shown in FIG. Figure 2 ;

[0067] Figure 8 It is a schematic diagram of the assembly of a telescopic rod of the present invention;

[0068] Fig. 9 It is a schematic diagram of the connection mechanism structure of the present invention;

[0069] Fig.10 It is a schematic diagram of the structure of the follower of the present invention;

[0070] Fig.11 It is a schematic diagram of the assembly of the cleaning part of the present invention;

[0071] Fig.12 It is a schematic diagram of the cleaning component structure of the present invention;

[0072] Fig.13 It is a schematic diagram of the limit frame structure of the present invention.

[0073] In the figure: 1, placing table; 2, cleaning box; 3, motor; 4, cleaning device; 41, mounting cylinder 1; 411, limiting hole; 412, transmission rod; 413, pushing rod; 42, mounting cylinder 2; 43, telescopic rod 1; 44, connecting mechanism; 441, two-way telescopic cylinder; 442, pushing member; 4421, pushing plate; 4422, pushing handle; 4423, spring; 443, driven member; 4431, mounting plate ; 4432, gear; 4433, rack; 444, mounting ring; 45, cleaning part; 451, cleaning plate; 452, elastic telescopic rod 2; 453, limit frame; 4531, fixed frame; 4532, slideway; 454, slide rod; 5, pushing device; 51, triangular plate; 52, threaded rod 1; 53, reciprocating mechanism; 54, mounting frame; 55, threaded rod 2; 6, limit roller; 7, de-boiling and bleaching combined machine. DETAILED DESCRIPTION

[0074] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0075] Embodiment 1

[0076] This embodiment discloses a method for producing fabric descaling and bleaching.

[0077] Step 1: Grey fabric inspection and preparation

[0078] 1. Inspection

[0079] Carefully check the appearance of the grey fabric to see if there are any obvious damage, holes, uneven yarn thickness, etc. For example, for cotton fabrics, pay attention to the distribution of cotton knots and impurities.

[0080] Measuring the basic physical parameters of the grey fabric, including the width, length, and weight per unit area of ​​the fabric, helps determine the process parameters for subsequent processing, such as the amount of chemicals used and the operating speed of the equipment.

[0081] 2. Seam

[0082] Sew the head and tail ends of the grey cloth together smoothly using a special sewing machine. The quality of the seam head is directly related to the stability of the fabric's continuous operation in the equipment. The thickness of the seam head is required to be as consistent as possible with the main body of the grey cloth to avoid cloth jamming, cloth breakage, etc. during processing.

[0083] Step 2: Desizing process

[0084] 1. Selection and preparation of desizing agent

[0085] The desizing agent is selected according to the type of sizing on the grey cloth. If it is a starch sizing, amylase is usually used for desizing. For example, amylase is dissolved in water at a certain concentration (such as 1-3g / L), and an appropriate amount of penetrant (such as 0.5-1g / L JFC penetrant) is added to improve the permeability of the desizing agent.

[0086] For fabrics containing polyvinyl alcohol (PVA) slurry, a desizing solution containing caustic soda (such as 1-2 g / L) and an oxidant (such as 0.5-1 g / L hydrogen peroxide) can be prepared.

[0087] 2. Pad desizing

[0088] The fabric passes through the impregnation mill at an appropriate speed (such as 30-50m / min) to allow the fabric to fully absorb the desizing solution. The liquid pressing rate is generally controlled at 80% to 120%. For example, for thicker cotton fabrics, the liquid pressing rate can be slightly higher, reaching 100% to 120%; for thin chemical fiber fabrics, the liquid pressing rate can be controlled at 80% to 100%.

[0089] 3. Stacking or steam desizing

[0090] Pile desizing: The impregnated fabric is piled for a period of time at a certain temperature. For example, when using amylase for desizing, the fabric is piled at 50-60°C for 30 to 60 minutes to allow the amylase to fully decompose the starch slurry.

[0091] Steaming desizing: The fabric is steamed in a steamer. The steaming temperature is generally 90-100°C and the time is 15 to 30 minutes. Steaming can accelerate the reaction between the desizing agent and the size and improve the desizing efficiency.

[0092] 4. Wash with water

[0093] The fabric after desizing treatment needs to be washed to remove the decomposed sizing agent and desizing agent on the fabric. A multi-grid washing tank can be used for washing. The water temperature is generally reduced from about 80°C to room temperature grid by grid. The washing time for each grid is 3 to 5 minutes. At the same time, an appropriate amount of detergent (such as 0.5-1g / L) can be added during the washing process to enhance the washing effect.

[0094] Step 3: Cooking process

[0095] 1. Preparation of scouring liquid

[0096] The main component of the scouring liquid is caustic soda, and the concentration is generally 10-30g / L. Surfactants (such as 3-5g / L sodium dodecylbenzene sulfonate) and scouring aids (such as 2-3g / L sodium silicate) are also needed. Caustic soda can remove natural impurities such as wax, pectin, protein, etc. on the fabric. Surfactants improve the permeability and emulsification of the scouring liquid. Scouring aids can prevent the fabric from being excessively damaged by caustic soda during the scouring process.

[0097] 2. Scouring operation

[0098] Put the fabric into the scouring equipment (such as scouring pot or continuous scouring machine) and scour it under high temperature and high pressure. The scouring temperature is generally 120-130℃, the pressure is 0.15-0.2MPa, and the scouring time is 1-3 hours. During the scouring process, ensure that the fabric can fully contact with the scouring liquid. The scouring liquid can be continuously circulated through a circulating pump.

[0099] 3. Wash with water after scouring

[0100] The fabric after scouring should be washed to remove residual scouring liquid and impurities. The washing method is similar to the washing after desizing. Countercurrent rinsing can be used to improve washing efficiency. The pH value of the fabric after washing should be close to neutral. The pH value of the fabric can be tested to determine whether the washing is sufficient.

[0101] Step 4: Bleaching process

[0102] 1. Selection and preparation of bleach

[0103] Hydrogen peroxide bleaching: Adjust the pH value of hydrogen peroxide (concentration 2-5g / L) to 10.5-11 with caustic soda, and add stabilizers (such as sodium silicate 1-2g / L) and activators (such as urea 0.5-1g / L). This bleaching method has long-lasting whiteness and causes less damage to fabrics.

[0104] Sodium hypochlorite bleaching: prepare a bleaching solution containing sodium hypochlorite (effective chlorine content 1-3g / L), and add an appropriate amount of alkali (such as soda ash 0.5-1g / L) to adjust the pH value. The pH value is generally controlled at 9-10.5. However, the fabric tends to turn yellow after sodium hypochlorite bleaching, and the damage to the fiber is relatively large.

[0105] 2. Padding bleaching

[0106] The fabric passes through the padding machine at a suitable speed (such as 20-40m / min) so that the fabric absorbs the bleaching solution evenly, and the padding rate is controlled at 90% to 110%.

[0107] 3. Steaming or stacking bleaching

[0108] Steam bleaching: Steam the fabric after padding with bleaching liquid in a steamer at a temperature of 90-100°C for 30 to 60 minutes.

[0109] Pile bleaching: For some fabrics with higher strength requirements, pile bleaching can be used, piling the fabric at 40-50℃ for 2-4 hours.

[0110] 4. Washing and neutralization

[0111] The bleached fabric should be washed to remove residual bleach and reaction products. After washing, it should be neutralized with acid (such as acetic acid 0.5-1g / L) to make the pH value of the fabric reach 6-7, providing suitable pH for subsequent processing.

[0112] Step 5: Post-processing

[0113] 1. Drying

[0114] The fabric is dried by drying equipment (such as a drum dryer). The drying temperature is generally 100-150°C. The drying speed and temperature should be adjusted according to the type and thickness of the fabric. For example, for thin silk fabrics, the drying temperature can be controlled at 100-120°C. For thick cotton fabrics, the drying temperature can be appropriately increased to 130-150°C.

[0115] 2. Organize

[0116] After the fabric is dried, finishing operations such as stretching and shaping can be performed. Stretching can make the width of the fabric reach the specified size, and shaping can improve the dimensional stability and flatness of the fabric. For example, on a stenter, the width of the fabric is stretched to 5% to 10% wider than the grey cloth, and then shaped at a certain temperature (such as 180-200°C) and speed.

[0117] Embodiment 2

[0118] The present application also discloses a fabric descaling and bleaching production device for realizing the above production method, such as Figure 1-Figure 3 As shown, it includes a placing table 1, a cleaning box 2 is arranged on one side of the placing table 1, a motor 3 is arranged on one side of the outer surface of the cleaning box 2, a pushing device 5 is arranged on the other side of the outer surface of the cleaning box 2, three cleaning devices 4 are arranged in the middle of the inner cavity of the cleaning box 2, and limiting rollers 6 are arranged on both sides of the lower part of the inner cavity of the cleaning box 2. Both ends of the three cleaning devices 4 and the two limiting rollers 6 extend to the outside of the cleaning box 2, and the same side end surfaces of the three cleaning devices 4 and the two limiting rollers 6 are connected to the output end of the motor 3 through a belt, and a de-boiling and bleaching combined machine 7 is arranged in sequence on the side of the cleaning box 2 away from the placing table 1.

[0119] Specifically, before the fabric is subjected to the descaling, boiling and bleaching treatment, the fabric needs to be placed on top of the placing table 1, and then the fabric is passed through three cleaning devices 4 and two limiting rollers 6 in the inner cavity of the cleaning box 2, and then the cleaned fabric is introduced into the inner cavity of the descaling, boiling and bleaching combined machine 7 for treatment.

[0120] Furthermore, after the fabric enters the inner cavity of the cleaning box 2, the fabric first enters the cleaning liquid in the inner cavity of the cleaning box 2, and then the fabric will contact the surfaces of the three cleaning devices 4 in turn. During this process, the motor 3 will drive the three cleaning devices 4 to rotate, so that the cleaning devices 4 clean the surface of the fabric. At the same time, the cleaning device 4 is pushed by the pushing device 5, and the cleaning device 4 can flatten the fabric.

[0121] Furthermore, the rotation speed of the three cleaning devices 4 driven by the motor 3 is greater than the rotation speed of the two limiting rollers 6 driven by the motor 3, which can be achieved by adjusting the size of the pulleys installed on the cleaning devices 4 and the limiting rollers 6.

[0122] In order to promote the movement of the three cleaning devices 4, Figure 4 and Figure 5 As shown, the pushing device 5 includes a triangular plate 51 and a mounting frame 54, the mounting frame 54 is fixedly mounted on one side of the upper end of the placing table 1, the triangular plate 51 is rotatably connected to one end of the three cleaning devices 4 away from the motor 3, a threaded rod 52 is provided in the middle of the triangular plate 51, the threaded rod 1 52 is slidably mounted on the upper outer surface of the mounting frame 54, a threaded rod 2 55 is provided at the lower part of the threaded rod 1 52, the threaded rod 2 55 is rotatably mounted on the middle part of the outer surface of the mounting frame 54, the threaded rod 1 52 and the threaded rod 2 55 are threadedly connected, a reciprocating mechanism 53 is provided at the lower part of the outer surface of the mounting frame 54, the outer surface of the threaded rod 2 55 is connected to the lower side of the reciprocating mechanism 53 by a belt, and the upper outer surface of the reciprocating mechanism 53 is connected to the end face of the limiting roller 6 away from the side of the placing table 1 by a belt.

[0123] Specifically, when the motor 3 drives the three cleaning devices 4 and the two limiting rollers 6 to rotate, the limiting roller 6 located on the side away from the placement table 1 will drive the reciprocating mechanism 53 to operate, so that the reciprocating mechanism 53 drives the threaded rod 2 55 to reciprocate. When the threaded rod 2 55 reciprocates, the threaded rod 2 55 will drive the threaded rod 1 52 to reciprocate, and then the threaded rod 1 52 will push the three cleaning devices 4 to move through the triangular plate 51.

[0124] In order to clean the surface of the fabric, the fabric should be flattened. Figure 6-Figure 8 As shown, the cleaning device 4 includes a mounting cylinder 41, mounting cylinders 42 are arranged on both sides of the inner cavity of the mounting cylinder 41, a connecting mechanism 44 is arranged on the side of the outer surfaces of the two mounting cylinders 42 close to each other, and the connecting mechanism 44 is fixedly installed in the middle of the inner cavity of the mounting cylinder 41, and telescopic rods 43 are arranged in the middle of the inner cavity of the two mounting cylinders 42, and multiple cleaning parts 45 are arranged on the outer surfaces of the two telescopic rods 43, and the multiple cleaning parts 45 extend to the outside of the mounting cylinder 42.

[0125] Further, such as Figure 6As shown, a plurality of limiting holes 411 are provided on both sides of the outer surface of the mounting cylinder 41, and the plurality of limiting holes 411 are adapted for use with the plurality of cleaning parts 45. A transmission rod 412 and a push rod 413 are respectively provided at both ends of the mounting cylinder 41. One end face of the transmission rod 412 is connected to the output end of the motor 3 through a belt, and the outer surface of the push rod 413 is fixedly connected to the outer surface of the triangular plate 51. The push rod 413 extends to the interior of the mounting cylinder 42 on the same side, and the end face of the push rod 413 is fixedly connected to the end face of the telescopic rod 43 on the same side.

[0126] Specifically, during the output of the motor 3, the motor 3 will drive the mounting cylinder 41 to rotate. During the rotation of the mounting cylinder 41, the mounting cylinder 41 will drive the two mounting cylinders 42, the two telescopic rods 43 and the multiple cleaning components 45 to rotate. During this process, the multiple cleaning components 45 can clean the impurities on the surface of the fabric. At the same time, the pushing device 5 will drive the mounting cylinder 42 and the telescopic rod 43 on one side to move, and then drive the mounting cylinder 42 and the telescopic rod 43 on the other side to move through the connecting mechanism 44. During this process, the mounting cylinders 42 and the telescopic rod 43 on both sides will drive the multiple cleaning components 45 to slide on the inner wall of the mounting cylinder 41, so that the cleaning components 45 on both sides will flatten the fabric outward.

[0127] In the process of the pushing device 5 pushing the installation cylinder 2 42 and the telescopic rod 1 43 on one side of the three cleaning devices 4 to move, in order to enable the connecting mechanism 44 to drive the installation cylinder 2 42 and the telescopic rod 1 43 on the other side to move, as shown in FIG. Fig. 9 As shown, the connecting mechanism 44 includes a two-way telescopic cylinder 441, both ends of which are fixedly connected to the end faces of the two mounting cylinders 42, a mounting ring 444 is provided in the middle of the two-way telescopic cylinder 441, and the mounting ring 444 is fixedly installed in the middle of the inner cavity of the mounting cylinder 41, a follower 443 is provided in the middle of the inner cavity of the two-way telescopic cylinder 441, and a pushing member 442 is provided on the outer side of the two-way telescopic cylinder 441, and both ends of the pushing member 442 extend into the inner cavities of the two mounting cylinders 42, respectively.

[0128] Further, such as Fig. 9 As shown, the pushing member 442 includes two pushing plates 4421, which are respectively slidably installed in the inner cavities of the two mounting tubes 42, and the middle parts of the two pushing plates 4421 are respectively fixedly connected to the outer surfaces of the two telescopic rods 43, and multiple groups of push handles 4422 are arranged on the side of the outer surfaces of the two pushing plates 4421 close to each other, and springs 4423 are arranged in the middle parts of the multiple groups of push handles 4422.

[0129] Further, such as Fig.10As shown, the follower 443 includes a mounting plate 4431, which is fixedly mounted in the middle of the inner cavity of the bidirectional telescopic cylinder 441, and gears 4432 are rotatably mounted on the upper and lower sides of the mounting plate 4431. The outer surfaces of the two gears 4432 are meshedly connected with racks 4433, and the outer surfaces of the four racks 4433 are fixedly connected to the end faces of the two mounting cylinders 42.

[0130] Specifically, when the pushing device 5 pushes the telescopic rod 1 43 connected to it through the pushing rod 413, the telescopic rod 1 43 on this side will be retracted first. During the retraction process, the telescopic rod 1 43 pushes the pushing plate 4421 on the other side to move through the pushing plate 4421 and the plurality of pushing handles 4422 on one side, so that the telescopic rod 1 43 on the other side is retracted. When the telescopic rods 1 43 on both sides are retracted to the corresponding positions, the pushing device 5 will also push the pushing rod 413 to move. At this time, the telescopic rod 1 43 on one side will push the matching mounting tube 2 42 to move. When the mounting tube 42 on one side is retracted, the telescopic rod 1 43 on the other side is retracted. When the second cylinder 42 moves, the installation cylinder 2 42 on one side pulls the installation cylinder 2 42 on the other side toward the side close to the installation ring 444 through the action of two gears 4432 and four racks 4433, so that the two sides of the two-way telescopic cylinder 441 are contracted. At this time, the multiple groups of push handles 4422 will also contract, and the spring 4423 in the middle will be stretched under force. In the above process, the cleaning component 45 will contract inside the installation cylinder 1 41, so that when the installation cylinders 2 42 on both sides move toward each other, the cleaning component 45 will not push the fabric toward the middle of the installation cylinder 1 41, causing the fabric to become more wrinkled.

[0131] Furthermore, when the pushing device 5 pushes the pushing rod 413 to the maximum stroke, the pushing device 5 will pull the telescopic rod 43 to move outward through the pushing rod 413. During this process, the telescopic rod 43 will first return to its initial state under the action of the spring 4423 in the middle of the multiple push handles 4422, and then drive the mounting cylinders 42 on both sides to move away from each other. When the telescopic rod 43 returns to its initial position, at this time, the multiple cleaning components 45 have extended to the outside of the mounting cylinder 41. When the mounting cylinders 42 on both sides move away from each other, the multiple cleaning components 45 can push the fabric on the surface of the mounting cylinder 41 to both sides, thereby flattening the fabric. At the same time, the multiple cleaning components 45 can clean the surface of the fabric.

[0132] In order to clean the fabric, Fig.11 and Fig.12As shown, the cleaning member 45 includes a cleaning plate 451, which is slidably installed in the inner wall of the mounting tube 42, and elastic telescopic rods 452 are arranged on both sides of one end of the cleaning plate 451 close to the telescopic rod 43, and the two elastic telescopic rods 452 are fixedly installed on the outer surface of the telescopic rod 43, and a sliding rod 454 is arranged in the middle of one end of the cleaning plate 451 close to the telescopic rod 43, and limit frames 453 are arranged on both sides of the outer surface of the sliding rod 454, and the two limit frames 453 are fixedly installed on the inner cavity surface of the mounting tube 42.

[0133] Further, such as Fig.13 As shown, the limiting frame 453 includes a fixing frame 4531 , which is fixedly mounted on the inner cavity surface of the mounting tube 42 , and a slideway 4532 is provided in the middle of the fixing frame 4531 , and the slideway 4532 is adapted for use with the slide rod 454 .

[0134] Specifically, when the pushing device 5 pushes the telescopic rod 43 to move through the pushing rod 413, the telescopic rod 43 will first be extended and retracted. During this process, the telescopic rod 43 drives the cleaning plate 451 to move through the two elastic telescopic rods 452, and then the cleaning plate 451 drives the sliding rod 454 to slide in the inner cavity of the slide 4532 in the limiting frames 453 on both sides, so that the sliding rod 454 slides to the lowest point of the slide 4532. At this time, the cleaning plate 451 will shrink inside the mounting tube 41. When the pushing device 5 pulls the pushing rod 413, the sliding rod 454 will be forced to slide upward in the inner cavity of the slide 4532. At this time, the cleaning plate 451 extends to the outside of the mounting tube 41, so that the surface of the fabric can be cleaned. At the same time, the fabric is flattened under the drive of the mounting tube 42.

[0135] It should be noted that the specific installation method, circuit arrangement and connection method, and control method of the motor 3 and the descaling, boiling and bleaching combined machine 7 used in the above-mentioned second embodiment are conventional designs in the prior art and will not be elaborated in detail in the present invention.

[0136] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A method for descaling and bleaching a fabric, characterized in that: Step 1: Grey fabric inspection and preparation 1. Inspection Carefully check the appearance of the grey fabric to see if there are any obvious damage, holes, uneven yarn thickness, etc. For example, for cotton fabrics, pay attention to the distribution of cotton knots and impurities. Measuring the basic physical parameters of the grey fabric, including the width, length, and weight per unit area of ​​the fabric, helps determine the process parameters for subsequent processing, such as the amount of chemicals used and the operating speed of the equipment.

2. Seam Sew the head and tail ends of the grey cloth together smoothly using a special sewing machine. The quality of the seam head is directly related to the stability of the fabric's continuous operation in the equipment. The thickness of the seam head is required to be as consistent as possible with the main body of the grey cloth to avoid cloth jamming, cloth breakage, etc. during processing. Step 2: Desizing process 1. Selection and preparation of desizing agent The desizing agent is selected according to the type of sizing on the grey cloth. If it is a starch sizing, amylase is usually used for desizing. For example, amylase is dissolved in water at a certain concentration (such as 1-3g / L), and an appropriate amount of penetrant (such as 0.5-1g / L JFC penetrant) is added to improve the permeability of the desizing agent. For fabrics containing polyvinyl alcohol (PVA) slurry, a desizing solution containing caustic soda (such as 1-2 g / L) and an oxidant (such as 0.5-1 g / L hydrogen peroxide) can be prepared.

2. Pad desizing The fabric passes through the impregnation mill at an appropriate speed (such as 30-50m / min) to allow the fabric to fully absorb the desizing solution. The liquid pressing rate is generally controlled at 80% to 120%. For example, for thicker cotton fabrics, the liquid pressing rate can be slightly higher, reaching 100% to 120%; for thin chemical fiber fabrics, the liquid pressing rate can be controlled at 80% to 100%.

3. Stacking or steam desizing Pile desizing: The impregnated fabric is piled for a period of time at a certain temperature. For example, when using amylase for desizing, the fabric is piled at 50-60°C for 30 to 60 minutes to allow the amylase to fully decompose the starch slurry. Steaming desizing: The fabric is steamed in a steamer. The steaming temperature is generally 90-100°C and the time is 15 to 30 minutes. Steaming can accelerate the reaction between the desizing agent and the size and improve the desizing efficiency.

4. Wash with water The fabric after desizing treatment needs to be washed to remove the decomposed sizing agent and desizing agent on the fabric. A multi-grid washing tank can be used for washing. The water temperature is generally reduced from about 80°C to room temperature grid by grid. The washing time for each grid is 3 to 5 minutes. At the same time, an appropriate amount of detergent (such as 0.5-1g / L) can be added during the washing process to enhance the washing effect. Step 3: Cooking process 1. Preparation of scouring liquid The main component of the scouring liquid is caustic soda, and the concentration is generally 10-30g / L. Surfactants (such as 3-5g / L sodium dodecylbenzene sulfonate) and scouring aids (such as 2-3g / L sodium silicate) are also needed. Caustic soda can remove natural impurities such as wax, pectin, protein, etc. on the fabric. Surfactants improve the permeability and emulsification of the scouring liquid. Scouring aids can prevent the fabric from being excessively damaged by caustic soda during the scouring process.

2. Scouring operation Put the fabric into the scouring equipment (such as scouring pot or continuous scouring machine) and scour it under high temperature and high pressure. The scouring temperature is generally 120-130℃, the pressure is 0.15-0.2MPa, and the scouring time is 1-3 hours. During the scouring process, ensure that the fabric can fully contact with the scouring liquid. The scouring liquid can be continuously circulated through a circulating pump.

3. Wash after boiling The fabric after scouring should be washed to remove residual scouring liquid and impurities. The washing method is similar to the washing after desizing. Countercurrent rinsing can be used to improve washing efficiency. The pH value of the fabric after washing should be close to neutral. The pH value of the fabric can be tested to determine whether the washing is sufficient. Step 4: Bleaching process 1. Selection and preparation of bleach Hydrogen peroxide bleaching: Adjust the pH value of hydrogen peroxide (concentration 2-5g / L) to 10.5-11 with caustic soda, and add stabilizers (such as sodium silicate 1-2g / L) and activators (such as urea 0.5-1g / L). This bleaching method has long-lasting whiteness and causes less damage to fabrics. Sodium hypochlorite bleaching: prepare a bleaching solution containing sodium hypochlorite (effective chlorine content 1-3g / L), and add an appropriate amount of alkali (such as soda ash 0.5-1g / L) to adjust the pH value. The pH value is generally controlled at 9-10.

5. However, the fabric tends to turn yellow after sodium hypochlorite bleaching, and the damage to the fiber is relatively large.

2. Padding bleaching The fabric passes through the padding machine at a suitable speed (such as 20-40m / min) so that the fabric absorbs the bleaching solution evenly, and the padding rate is controlled at 90% to 110%.

3. Steaming or stacking bleaching Steam bleaching: Steam the fabric after padding with bleaching liquid in a steamer at a temperature of 90-100°C for 30 to 60 minutes. Pile bleaching: For some fabrics with higher strength requirements, pile bleaching can be used, piling the fabric at 40-50℃ for 2-4 hours.

4. Washing and neutralization The bleached fabric should be washed to remove residual bleach and reaction products. After washing, it should be neutralized with acid (such as acetic acid 0.5-1g / L) to make the pH value of the fabric reach 6-7, providing suitable pH for subsequent processing. Step 5: Post-processing 1. Drying The fabric is dried by drying equipment (such as a drum dryer). The drying temperature is generally 100-150°C. The drying speed and temperature should be adjusted according to the type and thickness of the fabric. For example, for thin silk fabrics, the drying temperature can be controlled at 100-120°C. For thick cotton fabrics, the drying temperature can be appropriately increased to 130-150°C.

2. Organize After the fabric is dried, finishing operations such as stretching and shaping can be performed. Stretching can make the width of the fabric reach the specified size, and shaping can improve the dimensional stability and flatness of the fabric. For example, on a stenter, the width of the fabric is stretched to 5% to 10% wider than the grey cloth, and then shaped at a certain temperature (such as 180-200°C) and speed.

2. A production device for realizing the descaling, boiling and bleaching of fabrics as claimed in claim 1, comprising a placing table (1), characterized in that: a cleaning box (2) is arranged on one side of the placing table (1), a motor (3) is arranged on one side of the outer surface of the cleaning box (2), a pushing device (5) is arranged on the other side of the outer surface of the cleaning box (2), three cleaning devices (4) are arranged in the middle of the inner cavity of the cleaning box (2), and limiting rollers (6) are arranged on both sides of the lower part of the inner cavity of the cleaning box (2), both ends of the three cleaning devices (4) and the two limiting rollers (6) extend to the outside of the cleaning box (2), the same side end surfaces of the three cleaning devices (4) and the two limiting rollers (6) are connected to the output end of the motor (3) through a belt, and a descaling, boiling and bleaching combined machine (7) is arranged in sequence on the side of the cleaning box (2) away from the placing table (1).

3. A fabric descaling and bleaching production device according to claim 2, characterized in that: The pushing device (5) comprises a triangular plate (51) and a mounting frame (54), wherein the mounting frame (54) is fixedly mounted on one side of the upper end of the placing platform (1), the triangular plate (51) is rotatably connected to one end of the three cleaning devices (4) away from the motor (3), a threaded rod (52) is provided in the middle of the triangular plate (51), the threaded rod (52) is slidably mounted on the upper outer surface of the mounting frame (54), and a threaded rod (52) is provided at the lower part of the threaded rod (52). 55), the second threaded rod (55) is rotatably mounted on the middle part of the outer surface of the mounting frame (54), the first threaded rod (52) and the second threaded rod (55) are threadedly connected, a reciprocating mechanism (53) is arranged at the lower part of the outer surface of the mounting frame (54), the outer surface of the second threaded rod (55) is connected to the lower side of the reciprocating mechanism (53) through a belt, and the upper part of the outer surface of the reciprocating mechanism (53) is connected to the end face of the limiting roller (6) on the side away from the placing table (1) through a belt.

4. A fabric descaling and bleaching production device according to claim 3, characterized in that: The cleaning device (4) comprises a mounting cylinder (41), mounting cylinders (42) are arranged on both sides of the inner cavity of the mounting cylinder (41), a connecting mechanism (44) is arranged on the side of the outer surfaces of the two mounting cylinders (42) close to each other, and the connecting mechanism (44) is fixedly installed in the middle of the inner cavity of the mounting cylinder (41), a telescopic rod (43) is arranged in the middle of the inner cavity of the two mounting cylinders (42), and a plurality of cleaning components (45) are arranged on the outer surfaces of the two telescopic rods (43), and the plurality of cleaning components (45) extend to the outside of the mounting cylinder (42).

5. A fabric descaling and bleaching production device according to claim 4, characterized in that: A plurality of limiting holes (411) are provided on both sides of the outer surface of the installation cylinder (41), and the plurality of limiting holes (411) are adapted for use with a plurality of cleaning parts (45). A transmission rod (412) and a push rod (413) are provided at both ends of the installation cylinder (41), respectively. One end surface of the transmission rod (412) is connected to the output end of the motor (3) via a belt, and the outer surface of the push rod (413) is fixedly connected to the outer surface of the triangular plate (51). The push rod (413) extends to the interior of the installation cylinder (42) on the same side, and the end surface of the push rod (413) is fixedly connected to the end surface of the telescopic rod (43) on the same side.

6. A fabric descaling and bleaching production device according to claim 5, characterized in that: The connecting mechanism (44) comprises a bidirectional telescopic cylinder (441), the two ends of which are fixedly connected to the end faces of the two mounting cylinders (42), respectively; a mounting ring (444) is arranged in the middle of the bidirectional telescopic cylinder (441), and the mounting ring (444) is fixedly installed in the middle of the inner cavity of the mounting cylinder (41); a follower (443) is arranged in the middle of the inner cavity of the bidirectional telescopic cylinder (441); a pushing member (442) is arranged on the outer side of the bidirectional telescopic cylinder (441), and the two ends of the pushing member (442) respectively extend into the inner cavities of the two mounting cylinders (42).

7. A fabric descaling and bleaching production device according to claim 6, characterized in that: The pushing member (442) includes two pushing plates (4421), and the two pushing plates (4421) are respectively slidably installed in the inner cavities of the two mounting tubes (42), and the middle parts of the two pushing plates (4421) are respectively fixedly connected to the outer surfaces of the two telescopic rods (43), and multiple groups of pushing handles (4422) are arranged on the side where the outer surfaces of the two pushing plates (4421) are close to each other, and springs (4423) are arranged in the middle parts of the multiple groups of pushing handles (4422).

8. A fabric descaling and bleaching production device according to claim 7, characterized in that: The driven member (443) comprises a mounting plate (4431), wherein the mounting plate (4431) is fixedly mounted in the middle of the inner cavity of the bidirectional telescopic cylinder (441), and gears (4432) are rotatably mounted on the upper and lower sides of the mounting plate (4431), and the outer surfaces of the two gears (4432) are meshingly connected with racks (4433), and the outer surfaces of the four racks (4433) are fixedly connected to the end faces of the two mounting cylinders (42).

9. A fabric descaling and bleaching production device according to claim 8, characterized in that: The cleaning member (45) comprises a cleaning plate (451), the cleaning plate (451) being slidably mounted on the inner wall of the second mounting tube (42), elastic telescopic rods (452) being arranged on both sides of one end of the cleaning plate (451) close to the first telescopic rod (43), the two elastic telescopic rods (452) being fixedly mounted on the outer surface of the first telescopic rod (43), a sliding rod (454) being arranged in the middle of one end of the cleaning plate (451) close to the first telescopic rod (43), limiting frames (453) being arranged on both sides of the outer surface of the sliding rod (454), the two limiting frames (453) being fixedly mounted on the inner cavity surface of the second mounting tube (42).

10. A fabric descaling and bleaching production device according to claim 9, characterized in that: The limiting frame (453) includes a fixing frame (4531), and the fixing frame (4531) is fixedly mounted on the inner cavity surface of the second mounting tube (42). A slideway (4532) is provided in the middle of the fixing frame (4531), and the slideway (4532) is adapted for use with the slide rod (454).

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