Patent Publication Number: US-2022213630-A1

Title: Method for Manufacturing Fabric with High-efficiency and High-precision Flat Screen and Digital Printed Patterns with Energy Saving and Emission-reduction Effect

Description:
TECHNICAL FIELD 
     The disclosure relates to the field of fabric production technologies, in particular to a method for manufacturing fabric with high-efficiency and high-precision flat screen and digital printed patterns with energy saving and emission-reduction effect. 
     BACKGROUND 
     With the continuous development of the market, consumer demand has become more diversified and individualized, and equipment manufacturers have begun to explore the application of digital inkjet printing technology in subdivided fields; the traditional printing fabric production process uses a separate flat/rotary screen, or separate digital inkjet printing, the separate use of flat/rotary screen is less efficient and consumes more energy, while the separate use of digital inkjet printing causes a higher cost. Moreover, the whole production process of existing printed fabric involves many complicated steps, so it needs to be further improved. 
     SUMMARY 
     The purpose of the disclosure is to overcome the shortcomings of the prior art and provide a method for manufacturing fabric with high-efficiency and high-precision flat screen and digital printed patterns with energy saving and emission-reduction effect. 
     The purpose of the disclosure is achieved through technical solutions as follows. 
     Specifically, a method for manufacturing fabric with high-efficiency and high-precision flat screen and digital printed patterns with energy saving and emission-reduction effect includes the following steps: singeing; pretreatment; flat screen scraping sizing, pre-drying, and pattern printing; drying; humidification; steaming treatment; washing; and non-ironing and soft setting. 
     The pretreatment is a biological enzyme pretreatment process with high-efficiency and short process, and a process flow of the biological enzyme pretreatment process includes: cloth feeding at 75° C.; dipping, scouring and bleaching in a working fluid; heating to 90° C. for treatment for 30 minutes; draining; hot water washing; and cold water washing. 
     In the step of pattern printing, a production device of flat screen and digital inkjet pattern printing is used, a flat screen pattern printing and a digital inkjet pattern printing are both performed, the digital inkjet pattern printing is used for fine patterns, and the flat screen pattern printing is used for large bottom scraping. 
     In an embodiment, in the step of singeing, a singeing machine is used, with a flame injection pressure of 15 mbar, a fabric passing speed of 100 m/min, and burners respectively facing towards front and rear sides of a fabric for double-faced singeing. 
     The disclosure has the following advantages: 
     1. for the flat screen scraping sizing, the need for the sizing process of the additional sizing machine is eliminated, so the process flow is short; the sizing adopts positioned sizing that uses flat screen to scrape the sizing agent to the position of the pattern to be digital spray-printed instead of full-width sizing, which greatly reduces the amount of sizing agent used, and because there are a lot of auxiliaries such as urea and sodium bicarbonate in the sizing agent, this also lowers production costs and reduces waste water pollution, and solves the problem that the fabric is mottled caused by the application of sizing agent in areas without printed pattern due to full-width sizing. 
     2. a non-ironing compound mixed softener and environmentally friendly resin is used to an one-step softening and non-ironing process, the non-ironing effect is good, and the fabric is soft and skin-friendly, which solves the problem of excessive formaldehyde in the ordinary non-ironing finishing process. 
     The integration of flat screen and digital printing in one unit can make them work together to improve production efficiency, and reduce energy consumption and emissions, and such design is more reasonable. 
     The screw sliding table on the support pillar moves the feeding limit seat over the conveyor belt on one side of the frame, the pushing cylinder pushes the connecting seat, the feeding rotating motor drives the feeding rotating gear to rotate, and the feeding rotating gear rotates to drive the four feeding limit racks meshed with the feeding rotating gear to move laterally, so that the feeding limit plates on the four feeding limit racks clamp the flat screen to be processed, and then the screw sliding table moves the flat screen to be processed over the limit seat, the pushing cylinder pushes the flat screen to be processed onto the limit seat, the feeding rotating motor rotates the feeding rotating gear, the feeding rotating gear rotates to drive the four feeding limit racks meshed with the feeding rotating gear to move laterally, so that the feeding limit plates on the four feeding limit racks release the flat screen to be processed, and the flat screen to be processed can be steadily placed on the limit seat to complete the feeding, so as to realize automatic feeding, which makes the flat screen processing and production more automated, reduces manual operations, and lowers costs. 
     When the flat screen to be processed is placed on the limit seat, the rotating motor drives the rotating gear to rotate, and the rotating gear rotates to drive the four limit racks meshed with the rotating gear to move horizontally, so that the limit plates on the four limit racks limit the flat screen to be processed, and then the turning motor on the moving support on one side of the frame drives the screw rod to rotate, the screw rod rotates and drives the moving rack with one end sleeved on the screw rod to move, and then the moving motor on the support frame at the moving rack rotates, and the moving motor rotates to drive the moving gear fixedly connected to it to rotate, the rotation of the moving gear makes the moving gear move horizontally on the moving rack meshed with it, and then the cylinder pushes the processing part fixedly connected to its output end to process the flat screen on the limit seat, so as to conveniently and quickly complete the supporting of flat screens of different specifications, shorten the screen changing time during screen processing, improve the production efficiency, and ensure the uniform force and movement accuracy of the lateral movement module. 
     After the processing is completed, the rotating motor rotates the rotating gear, and the rotating gear rotates to drive the four limit racks meshed with the rotating gear to move laterally, so that the limit plates on the four limit racks release the flat screen to be processed, and then the pushing cylinder pushes the connecting seat to push the feeding limit seat over the limit seat, the feeding rotating motor drives the feeding rotating gear to rotate, the feeding rotating gear rotates to drive the four feeding limit racks meshed with the feeding rotating gear move laterally, so that the feeding limit plates on the four feeding limit racks clamp the flat screen to be processed, and then the screw sliding table moves the flat screen to be processed over the conveyor belt on the other side to complete the discharging, so as to realize automatic discharging, which makes the flat screen processing and production more automated, reduces manual operations, and lowers costs. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG. 1  is a three-dimensional structural diagram of a production device in the disclosure; 
         FIG. 2  is a three-dimensional structural diagram of the production device in the disclosure from a first angle; 
         FIG. 3  is an enlarged view of part A in  FIG. 2 ; 
         FIG. 4  is a three-dimensional structural diagram of the production device in the disclosure from a second angle; 
         FIG. 5  is a three-dimensional structural diagram of a feeding rotating gear in the disclosure; and 
         FIG. 6  is a schematic structural diagram of a horizontal guide rod of the feeding rotating gear in the disclosure. 
     
    
    
     DETAILED DESCRIPTION OF EMBODIMENTS 
     The disclosure will be further described below in conjunction with embodiments, but the protection scope of the disclosure is not limited to the following. 
     In an illustrated embodiment, rayon cloth is used. 
     The method for manufacturing fabric with high-efficiency and high-precision flat screen and digital printed patterns with energy saving and emission-reduction effect includes the following steps: singeing; pretreatment; flat screen scraping sizing, pre-drying, and pattern printing; drying; humidification; steaming treatment; washing; and non-ironing and soft-setting. 
     The pretreatment is a biological enzyme pretreatment process with high efficiency and short process, and a process flow of the biological enzyme pretreatment process includes: cloth feeding at 75° C.; dipping; scouring and bleaching in a working fluid; heating up to 90° C. for treatment for 30 minutes; draining; hot water washing; and cold water washing. 
     In the step of pattern printing, a flat screen+digital inkjet printing production device (also referred to as a production device of flat screen and digital inkjet pattern printing) is used, flat screen pattern printing and digital inkjet pattern printing are both performed, the digital inkjet pattern printing is used for fine patterns, and the traditional flat screen pattern printing method is used for large bottom scraping patterns. 
     In the step of singeing of the disclosure, a German Osthoff singeing machine is used, with a flame injection pressure of 15 milli-pascals (mbar), a fabric passing speed (also referred to as running speed) of 100 meters per minute (m/min), and burners respectively facing towards front and rear side of a fabric. 
     A biological enzyme pretreatment process technique with high efficiency short process is adopted. The process parameters of the biological enzyme pretreatment process with high efficiency short process include: 1.5 g/L of desizing enzyme (e.g., LD-6); 1 g/L of penetrant (e.g., MP-2); 1:6 of bath ratio; 300 m/min of cloth lifting speed; main pump efficiency: 90%, and quality index requirements including 5-9 centimeters per 5 minutes of capillary effect and a PH value in a range of 7-8. 
     The step of sizing adopts the positioned sizing that uses flat screen to scrape the sizing agent to the position of the pattern to be digital spray-printed instead of traditional full-width sizing for sizing and printing, and in the step of flat screen scraping sizing, a formula per 100 kg of the sizing agent includes: 
     70 kilograms (kg) of chemical synthesis paste; 3 kg of sodium bicarbonate; 1 kg of colorless anti-dyeing salt (e.g., 3-nitrobenzenesulfonic acid sodium salt); 3 kg of sodium sulfate; 7 kg of urea; 3 kg of hygroscopic agent (e.g., ST373 that a mixture of polyols and ether); and 13 kg of water. Among them, a formula per 100 kg of the chemical synthesis paste includes: 6 kg of polymer powder (e.g., DG-2 that a mixture in powder of natural and synthetic polymers) and 94 kg of water. 
     The chemical synthesis paste needs to be puffed evenly, and an overnight standing method is adopted to increase the puffing degree; the step of flat screen scraping sizing adopts synchronous scraping with printing, and after the scraping, the fabric is pre-dried on a machine station with an infrared dryer at a drying temperature of 80° C., and the flat screen pattern printing and the digital inkjet pattern printing are both performed. 
     In an embodiment, the digital ink adopts Honghua digital reactive ink, and its particle size is controlled below 1 micrometers (μm); ingredients per kilogram of flat screen pattern printing color paste includes: 1-10 grams (g) of reactive dye; 20-50 g of urea; 10-20 g of sodium bicarbonate; 400-600 g of semi-emulsified paste; and 320-570 g of water. 
     In the disclosure, the printing adopts the Japanese Toshin flat screen pattern printing machine equipped with Honghua digital pattern printing system, the digital inkjet pattern printing is used for fine patterns, and the traditional flat screen pattern printing method is used for large bottom scraping patterns, which greatly improves the production efficiency, and saves production costs.
         (1) Selection of digital ink: Honghua digital reactive ink is used, which has excellent performance and can produce high-quality patterns on the gray fabric.
           {circle around (1)} It has good light fastness and wet fastness;   {circle around (2)} The particle size is controlled below 1 μm, so it is not easy to block the nozzle;   {circle around (3)} It can be stored for a long time, and the printing effect will not be affected;   {circle around (4)} Its physical properties such as viscosity, conductivity, and surface tension are all within the specified range;   {circle around (5)} Non-toxic, safe, and non-flammable.   
           (2) Selection of synthesis paste for large bottom scraping: the semi-emulsified paste composed of sodium alginate paste and emulsion thickener is used, which has good rheology, good mesh permeability, uniform color yield, and high color yield, and is of great benefit to the fabric handle and the prevention of uneven dyeing. When preparing the semi-emulsified paste, the selection of emulsifier and the uniform emulsification are the keys to the preparation.   (3) The selection of large bottom scraping dye and process development: In order to obtain a strong and bright printing color effect, and prevent uneven dyeing and color wilting, we use imported Ciba P-type reactive dyes and adopt an open source automatic mixing system to prepare the color paste, with the viscosity between 350-450 pascal-second (Pa·S), and carry out intensive and intelligent management, so that the production process is environmentally friendly, energy-saving and emission-reducing.   (4) Flat screen and digital inkjet pattern printing: The high-efficiency flat screen and digital inkjet pattern printing process technique is adopted for printing, and the Honghua digital pattern printing system equipped with 40 nozzles is installed on the Japanese Toshin flat screen pattern printing machine. The digital inkjet pattern printing is used for fine patterns, and the traditional flat screen pattern printing method is used for large bottom scraping patterns; the pattern fineness and color richness are better than traditional flat screen pattern printing products. Moreover, the consumption of digital reactive ink is greatly reduced; it has faster speed and better penetration than full digital inkjet pattern printing, and has full background color, solid color, and wide color gamut, which reduces the cost of digital reactive ink and improves production efficiency. The digital inkjet pattern printing area is separately enclosed and isolated for air-conditioning refrigeration to prevent nozzle blockage, the refrigerated area is small and will not be affected by the high temperature of drying, which saves energy and reduces consumption.       

     After the step of pattern printing is completed, the fabric enters the drying room for drying, a temperature of the drying room is in a range of 80˜110° C., and fabric passing speed is in a range of 6-8 m/min; the fabric should be dried evenly in time, and sealed with plastic wrap paper after drying to keep it from moisture and avoid that the fabric is mottled. 
     When the viscose fiber is steamed, the process of absorbing a large amount of humidity from the steam is an exothermic process, the rise of the temperature of the fabric itself and the steam in the steamer will cause such problems as uneven color yield, and color difference between batches of the fabric; a humidifier is used to spray on the surface of the fabric for humidification before steaming treatment, and the humidification process parameters: fabric passing speed is 20 m/min, and the humidification is sufficient and uniform. 
     Specifically, process parameters for steaming treatment includes: a ring length of 2.3 meters (m); a temperature of the steaming treatment in a range of 102° C.˜104° C., a time of the steaming treatment of 10 min, a fabric passing speed of 26 m/min, and a steam flow rate of 900 kilograms per hour (kg/h). 
     In the step of washing, a continuous loose open-width washing machine is used, and a fabric passing speed is 35 m/min, cold water in a first cylinder and a second cylinder showering through a padder, then soap boiling is performed with 4 g/L of soaping agent at a water temperature of 90° C. in a third cylinder, a fourth cylinder, a fifth cylinder, a seventh cylinder and an eighth cylinder, subsequently cleaning is performed by cold water in a ninth cylinder and a tenth cylinder; afterwards squeezing, and finally drying. 
     In an embodiment, in the step of non-ironing and soft setting, resin non-ironing finishing is adopted. 
     The formula of the working fluid for non-ironing and soft-setting includes: 100 g/L of resin EF0; 50 g/L of catalyst 533; 70 g/L of super-elastic water-based silica gel X-1; and 5 g/L of glycine. 
     Specifically, process parameters of the soft setting include: 137 centimeters (cm) of frame door width, 135 cm of effective door width, 126 grams per square meter (g/m 2 ) of gram weight, a temperature of 170° C., a speed of 25 m/min, 900 revolutions per minute (r/min) of air volume, and an overfeed of 13%. 
     
       
         
           
               
             
               
                 TABLE 1 
               
             
            
               
                   
               
               
                 Comparison of main parameters of similar domestic techniques 
               
            
           
           
               
               
               
               
            
               
                   
                   
                   
                 FZ/T14004—2014 
               
               
                 Test items 
                 Index requirements 
                 Actual 
                 First-class products 
               
               
                   
               
               
                 Breaking 
                 Warp direction ≥350 
                 Warp direction 450 
                 Warp direction ≥250 
               
               
                 strength/N 
                 Weft direction ≥350 
                 Weft direction 400 
                 Weft direction ≥200 
               
               
                 Size change rate  
                 Warp direction −3.0~+1.5 
                 Warp direction −2.3 
                 Warp direction −6.0~+1.5 
               
               
                 of water 
                 Weft direction −3.0~+1.5 
                 Weft direction +1.5 
                 Weft direction −6.0~+1.5 
               
               
                 washing/% 
                   
                   
                   
               
               
                 Color fastness 
                 Discoloration ≥4 
                 Discoloration 4-5 
                 Discoloration ≥3 
               
               
                 to washing 
                 Staining ≥3-4 
                 Staining 4-5 
                 Staining ≥3 
               
               
                 (Grade) 
                   
                   
                   
               
               
                 Color fastness 
                 Discoloration ≥3-4 
                 Discoloration 4-5 
                 Discoloration ≥3-4 
               
               
                 to perspiration 
                 Staining ≥4 
                 Staining 4-5 
                 Staining ≥3-4 
               
               
                 (Grade) 
                   
                   
                   
               
               
                 Dry rubbing 
                 ≥4 
                 4-5 
                 ≥3-4 
               
               
                 Wet rubbing 
                 ≥3-4 
                 4 
                 ≥2-3 
               
               
                   
               
            
           
         
       
     
     The product quality indicators of the “high-efficiency and high-precision flat screen digital printing high-end spring and summer fashion fabrics” are tested by the Comprehensive Technical Service Center of China Shaoxing Customs, and all technical indicators meet the requirements of a Chinese standard of FZ/T14004-2014  Printed and Dyed Viscose Fabric ; with precise patterns and rich colors, it greatly reduces the consumption of digital reactive ink, and has faster speed and better penetration than full digital inkjet pattern printing, thus improving the production efficiency. The digital inkjet pattern printing area is separately enclosed and isolated for air-conditioning refrigeration, the refrigerated area is small and will not be affected by the high temperature of drying, which saves energy and reduces consumption. A self-made humidifying device is adopted for moistening in the steaming treatment step to improve the color fastness and the color yield through steaming treatment and fixation. The after-finish adopts environmentally-friendly resin non-ironing finishing, the non-ironing effect is good, and the non-ironing effect after three washings and three dryings has reached Grade III and above; the project products are soft and skin-friendly, with good moisture absorption, good air permeability, simple care, and good chlorine bleaching fastness, can satisfies the multi-faceted requirements of high-end clothing and summer women&#39;s clothing fabrics, and have a good market prospect. 
     Specifically, as shown in  FIGS. 1-6 , the production device of flat screen and digital inkjet pattern printing includes a frame  1 , a limit assembly  2 , a moving assembly  3 , a feeding assembly  4 , and conveyor belts  5 . The limit assembly  2  is arranged on a top of the frame  1 , and the limit assembly  2  is fixedly connected to the frame  1 . The moving assembly  3  is arranged beside the frame  1 , and the moving assembly  3  is located above the limit assembly  2 . The feeding assembly  4  includes a feeding limit part  42  and a feeding moving part  41 , the feeding moving part  41  is arranged on one side of the frame  1 , and the feeding limit part  42  is arranged inside the feeding moving part  41 , and the feeding limit part  42  and the feeding moving part  41  are fixedly connected. Two conveyor belts  5  are provided, and the two conveyor belts  5  are symmetrically arranged on both sides of the moving assembly  3 . 
     Specifically, the limit assembly  2  includes a limit seat  21 , limit racks  22 , limit plates  23 , a rotating motor  24 , and a rotating gear  25 . The limit seat  21  is arranged on the top of the frame  1 , and the limit seat  21  and the frame  1  are fixedly connected. The rotating motor  24  is arranged at a bottom of the frame  1 , the rotating gear  25  is arranged inside the limit seat  21 , and the rotating gear  25  and the output end of the rotating motor  24  are fixedly connected. Four limit racks  22  are provided, the four limit racks  22  are arranged at equal angles along the circumferential direction of the rotating gear  25 , and the four limit racks  22  are all meshed with the rotating gear  25 . Four limit plates  23  are provided, and the four limit plates  23  are installed on the corresponding limit racks  22 , respectively. When the flat screen to be processed is placed on the limit seat  21 , the rotating motor  24  drives the rotating gear  25  to rotate, and the rotating gear  25  rotates to drive the four limit racks  22  meshed with the rotating gear  25  to move horizontally, so that the limit plates  23  on the four limit racks  22  limit the flat screen to be processed. Then, the rotating motor  39  on the moving bracket  37  on one side of the frame  1  drives the screw rod  31  to rotate, the screw rod  31  rotates and drives the moving rack  32  with one end sleeved on the screw rod  31  to move. The moving motor  33  on the support frame  35  at the moving rack  32  rotates, the moving motor  33  rotates to drive the moving gear  34  fixedly connected to it to rotate, and the rotation of the moving gear  34  makes the moving gear  34  move horizontally on the moving rack  32  meshed with it. The cylinder  36  pushes the processing part fixedly connected to its output end to process the flat screen on the limit seat  21 , so as to conveniently and quickly complete the supporting of flat screens of different specifications, shorten the screen changing time during screen processing, improve the production efficiency, and ensure the uniform force and movement accuracy of the lateral movement module. 
     Specifically, the moving assembly  3  includes a screw rod  31 , a moving rack  32 , a moving motor  33 , a moving gear  34 , a support frame  35 , an air cylinder  36 , two moving supports  37 , and a turning motor  39 . The two moving supports  37  are symmetrically arranged on both sides of the frame  1 , the turning motor  39  is installed on the side wall of the moving support  37 , the screw rod  31  is rotatably installed on the moving bracket  37  on one side of the frame  1 , and one end of the screw rod  31  is fixedly connected to the output end of the turning motor  39 . The moving rack  32  is horizontally arranged, and one end of the moving rack  32  is sleeved on the screw rod  31 . The support frame  35  is arranged on the moving rack  32 , and the moving gear  34  is arranged inside the support frame  35 , and the moving gear  34  meshes with the moving rack  32 . The moving motor  33  is arranged on the outer side wall of the support frame  35 , and the output end of the moving motor  33  is fixedly connected to the moving gear  34 . The air cylinder  36  is arranged inside the support frame  35 , and the air cylinder  36  is located below the moving rack  32 . The moving bracket  37  on the other side of the frame  1  is provided with a sliding chute  38  for the moving rack  32  to slide. When the flat screen to be processed is placed on the limit seat  21 , the rotating motor  24  drives the rotating gear  25  to rotate, and the rotating gear  25  rotates to drive the four limit racks  22  meshed with the rotating gear  25  to move horizontally, so that the limit plates  23  on the four limit racks  22  limit the flat screen to be processed, and then the rotating motor  39  on the moving bracket  37  on one side of the frame  1  drives the screw rod  31  to rotate, the screw rod  31  rotates and drives the moving rack  32  with one end sleeved on the screw rod  31  to move, and then the moving motor  33  on the support frame  35  at the moving rack  32  rotates, and the moving motor  33  rotates to drive the moving gear  34  fixedly connected to it to rotate, the rotation of the moving gear  34  makes the moving gear  34  move horizontally on the moving rack  32  meshed with it, and then the cylinder  36  pushes the processing part fixedly connected to its output end to process the flat screen on the limit seat  21 , so as to conveniently and quickly complete the supporting of flat screens of different specifications, shorten the screen changing time during screen processing, improve the production efficiency, and ensure the uniform force and movement accuracy of the lateral movement module. 
     Specifically, the feeding moving part  41  includes support pillars  411 , a connecting seat  412 , a pushing cylinder  413 , and a screw sliding table  414 . The support pillars  411  are erected on the two conveyor belts  5 , the screw sliding table  414  is horizontally arranged upside down on the top of the two support pillars  411 , the top of the moving end of the screw sliding table  414  is fixedly connected to the top of the connecting seat  412 , and the pushing cylinder  413  is arranged inside the connecting seat  412 . Firstly, the screw sliding table  414  on the support pillar  411  moves the feeding limit seat  421  over the conveyor belt  5  on one side of the frame  1 , the pushing cylinder  413  pushes the connecting seat  412 , the feeding rotating motor  424  drives the feeding rotating gear  425  to rotate, and the feeding rotating gear  425  rotates to drive the four feeding limit racks  422  meshed with the feeding rotating gear  425  to move laterally, so that the feeding limit plates  423  on the four feeding limit racks  422  clamp the flat screen to be processed, and then the screw sliding table  414  moves the flat screen to be processed over the limit seat  21 , the pushing cylinder  413  pushes the flat screen to be processed onto the limit seat  21 , the feeding rotating motor  424  rotates the feeding rotating gear  425 , the feeding rotating gear  425  rotates to drive the four feeding limit racks  422  meshed with the feeding rotating gear  425  to move laterally, so that the feeding limit plates  423  on the four feeding limit racks  422  release the flat screen to be processed, and the flat screen to be processed can be steadily placed on the limit seat  21  to complete the feeding, so as to realize automatic feeding, which makes the flat screen processing and production more automated, reduces manual operations, and lowers costs. 
     Specifically, the feeding limit part  42  includes a feeding limit seat  421 , feeding limit racks  422 , feeding limit plates  423 , a feeding rotating motor  424 , and a feeding rotating gear  425 . The feeding limit seat  421  is arranged at the top of the frame  1 , and the feeding limit seat  421  is fixedly connected to the frame  1 . The feeding rotating motor  424  is arranged at the bottom of the frame  1 , the feeding rotating gear  425  is arranged inside the loading limit seat  421 , and the feeding rotating gear  425  is fixedly connected to the output end of the feeding rotating motor  424 . Four feeding limit racks  422  are provided, the four feeding limit racks  422  are arranged at equal angles along the circumferential direction of the feeding rotating gear  425 , and the four feeding limit racks  422  are all meshed with the feeding rotating gear  425 . Four feeding limit plates  423  are provided, the four feeding limit plates  423  are installed on the corresponding feeding limit racks  422 , respectively, the feeding rotating motor  424  is located inside the connecting seat  412 , and the feeding limit seat  421  is fixedly connected to the connecting seat  412 . Firstly, the screw sliding table  414  on the support pillar  411  moves the feeding limit seat  421  over the conveyor belt  5  on one side of the frame  1 , the pushing cylinder  413  pushes the connecting seat  412 , the feeding rotating motor  424  drives the feeding rotating gear  425  to rotate, and the feeding rotating gear  425  rotates to drive the four feeding limit racks  422  meshed with the feeding rotating gear  425  to move laterally, so that the feeding limit plates  423  on the four feeding limit racks  422  clamp the flat screen to be processed, and then the screw sliding table  414  moves the flat screen to be processed over the limit seat  21 , the pushing cylinder  413  pushes the flat screen to be processed onto the limit seat  21 , the feeding rotating motor  424  rotates the feeding rotating gear  425 , the feeding rotating gear  425  rotates to drive the four feeding limit racks  422  meshed with the feeding rotating gear  425  to move laterally, so that the feeding limit plates  423  on the four feeding limit racks  422  release the flat screen to be processed, and the flat screen to be processed can be steadily placed on the limit seat  21  to complete the feeding, so as to realize automatic feeding, which makes the flat screen processing and production more automated, reduces manual operations, and lowers costs. 
     Specifically, the limit seat  21  and the feeding limit seat  421  are both provided with moving grooves  6  for the feeding limit racks  422  and the limit racks  22  to move, so as to facilitate the limit plates  23  to limit flat screens of different sizes. 
     Specifically, one side of the frame  1  is provided with a fan  7  for cleaning the limit seat  21 , which can clean the dye on the flat screen and keep the flat screen clean. 
     The working process of the disclosure is as follows: firstly, the screw sliding table  414  on the support pillar  411  moves the feeding limit seat  421  over the conveyor belt  5  on one side of the frame  1 , the pushing cylinder  413  pushes the connecting seat  412 , the feeding rotating motor  424  drives the feeding rotating gear  425  to rotate, and the feeding rotating gear  425  rotates to drive the four feeding limit racks  422  meshed with the feeding rotating gear  425  to move laterally, so that the feeding limit plates  423  on the four feeding limit racks  422  clamp the flat screen to be processed, and then the screw sliding table  414  moves the flat screen to be processed over the limit seat  21 , the pushing cylinder  413  pushes the flat screen to be processed onto the limit seat  21 , the feeding rotating motor  424  rotates the feeding rotating gear  425 , the feeding rotating gear  425  rotates to drive the four feeding limit racks  422  meshed with the feeding rotating gear  425  to move laterally, so that the feeding limit plates  423  on the four feeding limit racks  422  release the flat screen to be processed, and the flat screen to be processed can be steadily placed on the limit seat  21  to complete the feeding, so as to realize automatic feeding, which makes the flat screen processing and production more automated, reduces manual operations, and lowers costs. When the flat screen to be processed is placed on the limit seat  21 , the rotating motor  24  drives the rotating gear  25  to rotate, and the rotating gear  25  rotates to drive the four limit racks  22  meshed with the rotating gear  25  to move horizontally, so that the limit plates  23  on the four limit racks  22  limit the flat screen to be processed, and then the rotating motor  39  on the moving bracket  37  on one side of the frame  1  drives the screw rod  31  to rotate, the screw rod  31  rotates and drives the moving rack  32  with one end sleeved on the screw rod  31  to move, and then the moving motor  33  on the support frame  35  at the moving rack  32  rotates, and the moving motor  33  rotates to drive the moving gear  34  fixedly connected to it to rotate, the rotation of the moving gear  34  makes the moving gear  34  move horizontally on the moving rack  32  meshed with it, and then the cylinder  36  pushes the processing part fixedly connected to its output end to process the flat screen on the limit seat  21 , so as to conveniently and quickly complete the supporting of flat screens of different specifications, shorten the screen changing time during screen processing, improve the production efficiency, and ensure the uniform force and movement accuracy of the lateral movement module. After the processing is completed, the rotating motor  24  rotates the rotating gear  25 , and the rotating gear  25  rotates to drive the four limit racks  22  meshed with the rotating gear  25  to move laterally, so that the limit plates  23  on the four limit racks  22  release the flat screen to be processed, and then the pushing cylinder  413  pushes the connecting seat  412  to push the feeding limit seat  421  over the limit seat  21 , the feeding rotating motor  424  drives the feeding rotating gear  425  to rotate, the feeding rotating gear  425  rotates to drive the four feeding limit racks  422  meshed with the feeding rotating gear  425  move laterally, so that the feeding limit plates  423  on the four feeding limit racks  422  clamp the flat screen to be processed, and then the screw sliding table  414  moves the flat screen to be processed over the conveyor belt  5  on the other side to complete the discharging, so as to realize automatic discharging, which makes the flat screen processing and production more automated, reduces manual operations, and lowers costs. 
     Secondly, as shown in  FIG. 2  and  FIG. 6 , cantilever elastic limit parts  43  are arranged on the two vertical inner surfaces of the feeding limit part  42  respectively, the feeding limit part  42  is located between the suspended ends of the two cantilever elastic limit parts  43 , and the axis lines of the two cantilever elastic limit parts  43  coincide; there is a gap between end surfaces of the suspended ends of the feeding limit part  42  and the cantilever elastic limit parts  43 ; a horizontal guide rod  44  of which the axis line coincides with the axis lines of the cantilever elastic limit parts  43  passes through the feeding limit part  42 , one end of the horizontal guide rod  44  extends into one of the cantilever elastic limit parts  43  and the horizontal guide rod and the one of the two cantilever elastic limit parts are movably connected with each other, and the other end of the horizontal guide rod  44  extends into the other cantilever type elastic limit part  43  and the horizontal guide rod and the other one of the two cantilever elastic limit parts are movably connected with each other. 
     The cantilever elastic limit parts  43  are a horizontally arranged springs, which can play the role of limit and shock absorption after contact, and prevent the feeding moving part  41  from shaking greatly due to inertia after moving to a predetermined position and braking. 
     The two ends of the horizontal guide rod  44  respectively extend into the cantilever elastic limit parts  43 , the two ends of the horizontal guide rod  44  are respectively provided with limit rings, and the outer diameter of each of the limit rings is larger than the outer diameter of each of the springs, so as to play a limiting role when the spring is compressed. 
     The synergy of the horizontal guide rod  44  and the cantilever elastic limit parts  43  can improve the smoothness of the movement of the feeding moving part  41 , and can also function as an extreme movement protection. 
     Moreover, both ends of the horizontal guide rod  44  are respectively provided with arc convex surfaces to prevent the ends of the horizontal guide rod  44  from pressing against the position between the turns of the springs. 
     In addition, the feeding limit part  42  is disposed with a transverse through hole, the horizontal guide rod  44  penetrates the transverse through hole, and a number of countersunk heads threadedly connected with the feeding limit part  42  are penetrated at the bottom of the feeding limit part  42 , the threaded end surfaces of the countersunk screws press against the horizontal guide rod  44 , and with this structure, the position of the horizontal guide rod  44  can be adjusted. 
     A screw is penetrated in the radial direction of the limit ring, and the threaded end of the screw presses against the horizontal guide rod  44  to facilitate the adjustment of the position of the limit ring. 
     Each of the cantilever elastic limit parts  43  is fixed on the corresponding one of the vertical inner surfaces of the feeding limit part  42  through a flange. 
     By using the production device, energy consumption and emissions can be greatly reduced, the design is more reasonable, and the production and processing efficiency is improved. 
     Although the embodiments of the disclosure have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the disclosure, and the scope of the disclosure is defined by the appended claims and their equivalents.