Textile production equipment and preparation process for recycling waste polyester bottle chips

Abstract

The invention discloses waste polyester bottle chip recycling textile production equipment and a preparation process thereof, and relates to the technical field of polyester bottle chip recycling. Comprising the steps that the waste polyester bottle chips are screened into at least two parts, a screened material set is obtained, the screened material set at least comprises two screened material items, and the screened material items represent the waste polyester bottle chips of different qualities respectively; based on the screening material set, heating is conducted through a melting method to melt the screening material set, and a molten material set is obtained and at least comprises two molten material items. The molten waste polyester bottle chips are subjected to extrusion spinning, the silk yarn with the highest strength in the silk yarn combination is selected as the selected silk yarn item according to requirements, the silk yarn is subjected to extrusion fitting and winding, the composite silk yarn is obtained, the overall structural strength of the composite silk yarn is improved, and the production cost is reduced. And the problem that the quality of the silk threads is not uniform when the silk threads are discharged due to the fact that the waste polyester bottle chips with different qualities cannot be completely fused is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of recycling of polyester bottle chips, and particularly to a production device and a preparation process for recycling waste polyester bottle chips into textiles. Background Art

[0002] Waste polyester bottle chips are polyester plastic products for recycling, such as beverage bottles, cosmetic bottles, etc., which are formed into sheet-like granular materials after being crushed and cleaned. They belong to a kind of recycled plastic and can be repeatedly processed into fibers, films, engineering plastics, etc. The application of waste polyester bottle chips in the textile industry is mainly realized through the production of recycled polyester fibers. After removing the stains and residual liquids on the surface of waste polyester bottle chips, two types of staple fibers and filaments are obtained through steps such as melt extrusion and wire drawing. The staple fibers can be directly used for spinning, and the filaments are made into cake by winding equipment.

[0003] A method for cleaning and recycling waste textiles to prepare geotextiles with the patent publication number CN107475901A. The method for recycling waste textiles is carried out in a completely clean and environmentally friendly process, without hydrolysis, and only a very small amount of low-melting-point fibers are melted. The whole process has low energy consumption and no pollution, and has good environmental friendliness. There is no need to separate waste textiles, which simplifies the treatment process. The prepared geotextiles have controllable thickness. Due to the bonding effect of the melted fibers, the geotextiles have high strength and meet the application requirements. The waste textiles that can be treated have a wide adaptability, and the treatment process is easy to master and can be popularized and applied.

[0004] In the process of melting and extruding waste polyester bottle chips into filaments as described above and similar technical solutions, due to the different textures of waste polyester bottle chips of different qualities, after melting in the same melting chamber, the molten waste polyester bottle chip liquids will be mixed together, but it is impossible to achieve true complete fusion. At this time, it will cause the overall quality of the ejected filaments to be uneven, thus affecting the filament forming effect. At the same time, due to the inconsistent melting points of waste polyester bottle chips of different qualities, when setting a unified melting temperature, it will cause more unnecessary energy consumption in the overall melting process. Summary of the Invention

[0005] The purpose of the present invention is to provide a production device and a preparation process for recycling waste polyester bottle chips into textiles to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions: A preparation process for recycling waste polyester bottle chips into textiles, including: Screening waste polyester bottle chips, screening them into at least two parts to obtain a screening material set, and the screening material set includes at least two screening material items, and the screening material items respectively represent waste polyester bottle chips of different qualities; Based on a set of screening materials, heat them by a melting method to make them molten, obtaining a set of molten materials. The set of molten materials includes at least two molten material items, and the molten material items respectively represent molten waste polyester bottle chips of different qualities. Based on the set of molten materials, extrude them by an extrusion filament method to make them filamentous, obtaining at least two sets of target filaments. The set of target filaments includes at least one type of target filament item, and the target filament item is used to represent filaments of different diameters. Obtain textile requirements to get target requirement items. Based on the target requirement items, screen the set of target filaments to obtain selected filament items and excluded filament items. Extrusion-wind the selected filament items by a winding method to obtain composite filament items, and at the same time collect the excluded filament items to obtain collected filament items. Strengthen the composite filament items by film coating through an optimization method to obtain strengthened composite items, thereby realizing the recycling of waste polyester bottle chips and the production of textiles.

[0007] Furthermore, the target requirement items include diameter requirements. The obtaining methods of the selected filament items and the excluded filament items include: Based on the set of target filaments, obtain the diameter data of the set of target filaments to obtain at least two diameter data sets. Set a diameter threshold based on the diameter requirement, obtain the combined result of the diameter data sets to obtain a combined result set. Obtain the combinations in the combined result set where the diameter data does not exceed the diameter threshold to obtain a target combination set. Sort the diameter data sets in the order of diameter size to obtain at least two diameter sorting sets. Select the target diameter sorting set as the main diameter sorting set. Based on the target combination set, select the combination with the highest sorting in the main diameter sorting set in the target combination set as the calibrated combination set. Based on the calibrated combination set, obtain the target filaments, and then obtain the selected filament items. Set the filaments in the set of target filaments except for the selected filament items as the excluded filament items.

[0008] Furthermore, the winding method includes: Limit the selected filament items and make the selected filament items approach each other until they are in contact, and at the same time clamp the selected filament items. Rotate the clamped selected filament items to make the selected filament items wind around each other to obtain wound filament items. Transport the wound filament items and at the same time perform adhesion and spraying to obtain composite filament items.

[0009] Furthermore, the optimization method includes: Set an auxiliary heating component, obtain finished plastic particles, and heat and melt the finished plastic particles based on the auxiliary heating component to obtain an auxiliary molten item. Spray the attached melting item onto the surface of the composite wire item to form a coating on the surface of the composite wire item, thereby obtaining the strengthened composite item.

[0010] Furthermore, the method for obtaining the screening material set includes: Set at least one screening module, and set different screening temperatures for each screening module respectively to obtain a screening module set; Based on the screening module set, heat and shake the waste polyester bottle chips to respectively obtain waste polyester bottle chip fluid and waste polyester bottle chip solid, obtain a first material item and a second material item, and use the first material item and the second material item as screening material items respectively, thereby obtaining a screening material set.

[0011] Furthermore, the melting method includes: Based on the screening material item, set the initial melting temperature respectively, obtain the melting state of the screening material item, and obtain a melting state item; Set a judgment threshold, the judgment threshold is the fluid state threshold, judge whether the melting state item reaches the judgment threshold. When the melting state item reaches the judgment threshold, use the corresponding melting temperature as the reference temperature. When the melting state item does not reach the judgment threshold, set an adjustment threshold to adjust the melting temperature until the melting state item reaches the judgment threshold, and also use the corresponding melting temperature as the reference temperature to obtain a melting temperature set, and melt the screening material items respectively with the melting temperature set.

[0012] Furthermore, the waste polyester bottle chip recycling textile production equipment uses the waste polyester bottle chip recycling textile preparation process described above, and includes a support component. An wire outlet component for wire outlet and a blanking component for wire winding are arranged on the support component. A rotating component for driving the blanking component to rotate is arranged between the blanking component and the support component. The support component includes a support plate and a support frame fixed at the bottom of the support plate. The rotating component includes a toothed ring, and the toothed ring contacts the support frame. The blanking component includes a plurality of first fixing plates and second fixing plates. The first fixing plates and the second fixing plates are fixed on the toothed ring. An electric push rod is arranged on the first fixing plate, and a rotating cylinder and a third driving motor for driving the rotating cylinder to rotate are arranged at the piston end of the electric push rod. A battery panel is fixedly connected to the second fixing plate for supplying power to the electric push rod and the third driving motor.

[0013] Furthermore, a limiting ring is fixedly connected to the toothed ring, a limiting groove adapted to the limiting ring is opened on the support frame, a main gear disk meshing with the toothed ring is rotatably arranged on the support frame, and a second driving motor for driving the main gear disk to rotate is arranged on the support frame.

[0014] Further, the wire outlet assembly includes a rotating disk, on which a plurality of docking holes are formed. Docking heads are fixedly connected to the docking holes, and the inner diameters of the inner walls of the docking holes are different. A wire outlet hole is formed on the support plate, and a plurality of first driving motors are fixedly connected to the support plate. The first driving motors are used to drive the rotating disk to rotate.

[0015] Further, a plurality of guiding pieces are fixedly connected to the toothed ring. The guiding pieces are all of an inclined structure. The spraying assembly includes a spraying pipe, and a spraying head is fixedly connected to the spraying pipe.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: The waste polyester bottle chip recycling and reusing textile production equipment and its preparation process screen the washed waste polyester bottle chips to obtain a first material item and a second material item. At the same time, the screened first material item and second material item are independently melted according to different temperatures, achieving the effect of energy saving. The melted waste polyester bottle chips are respectively extruded and spun, and the silk thread with the highest strength in the selected silk thread combination is selected as the selected silk thread item according to requirements. The silk threads are extruded and bonded, and wound to obtain a composite silk thread, thereby improving the overall structural strength of the composite silk thread and preventing the problem that the silk threads are uneven in quality during spinning due to the incomplete fusion of waste polyester bottle chips of different qualities.

[0017] At the same time, during the process of bonding and winding the silk threads into a thread to form a composite silk thread, the finished plastic particles are heated and melted by the auxiliary heating assembly to obtain an auxiliary melting item, and the auxiliary melting item is sprayed onto the surface of the composite silk thread item, so that a coating film is formed on the surface of the composite silk thread item, and then a strengthened composite item is obtained, thereby making the overall quality of the generated composite silk thread uniform and the wire forming effect better. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the overall process schematic diagram of the present invention; Figure 2 is the schematic diagram of the upper sieve and lower sieve structures of the present invention; Figure 3 is the schematic diagram of the target silk thread set acquisition process of the present invention; Figure 4 is the schematic diagram of the selected silk thread item acquisition process of the present invention; Figure 5 is the overall schematic diagram of the support assembly of the present invention; Figure 6 is the schematic diagram of the rotating disk structure of the present invention; Figure 7 is the overall bottom structure schematic diagram of the support assembly of the present invention; Figure 8 is the schematic diagram of the guiding piece structure of the present invention; Figure 9 This is a schematic diagram of the bottom structure of the blanking component of the present invention.

[0019] In the figure: 1. Support component; 101. Support plate; 102. Support frame; 2. Wire outlet component; 201. Rotating disk; 202. Docking head; 203. First driving motor; 3. Rotating component; 301. Second driving motor; 302. Main gear disk; 303. Tooth ring; 304. Limit ring; 305. Guide piece; 4. Spraying component; 401. Spraying pipe; 5. Blanking component; 501. First fixing plate; 502. Second fixing plate; 503. Electric push rod; 504. Rotating cylinder; 505. Third driving motor; 506. Battery panel. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] The melt extrusion spinning technology is one of the methods to convert it into textiles. However, first of all, the sources of waste PET bottle flakes are complex and their usage environments vary, resulting in uneven quality. Bottle flakes from different batches may be degraded to different degrees, contain different types of impurities, and even have significant differences in their molecular weight distributions. When these bottle flakes of different qualities are mixed and melted in the same melting chamber, even under high-temperature conditions, it is difficult for the molten PET liquid to achieve complete homogenization. The fundamental reason is that the entanglement and diffusion rate between polymer molecular chains are much lower than those of small-molecule liquids, resulting in microscale phase separation of the molten PET liquids of different qualities, that is, the formation of microregions with different textures. These microregions will bring serious consequences during the spinning process. Specifically, during the melt spinning process, the molten PET is extruded through the micropores of the spinneret to form filaments. If the texture of the molten material is inhomogeneous, that is, the viscosity is higher in some regions and lower in other regions, then the stretching properties and strengths of the filaments ejected at different positions will have significant differences. This difference will lead to uneven overall quality of the filaments, manifested as inconsistent thickness, unstable strength, and even problems such as breakage, ultimately seriously affecting the spinning effect and reducing the strength, durability, and subsequent processing performance of the obtained filaments. More seriously, this texture heterogeneity will also affect the dyeing performance of the filaments, resulting in uneven dyeing and directly affecting the finished quality of the textiles. The textile preparation process for recycling waste polyester bottle flakes provided in this application screens the washed waste polyester bottle flakes to obtain a first material item and a second material item, and independently melts the screened first material item and second material item according to different temperatures, achieving the effect of energy saving. The melted waste polyester bottle flakes are respectively extruded and spun, and the filament with the highest strength in the filament combination is selected as the selected filament item according to requirements, and the filaments are extruded and bonded and wound to obtain a composite filament, thereby improving the overall structural strength of the composite filament and preventing the problem of uneven quality of the filaments when the filaments are extruded due to the incomplete fusion of waste polyester bottle flakes of different qualities. At the same time, during the process of bonding and winding the filaments into a thread to generate a composite filament, the finished plastic particles are heated and melted by an auxiliary heating component to obtain an auxiliary molten item, and the auxiliary molten item is sprayed onto the surface of the composite filament item to form a coating on the surface of the composite filament item, thereby obtaining a strengthened composite item, so that the overall quality of the generated composite filament is uniform and the spinning effect is better, as Figure 1 shown, including steps S100 - S600.

[0022] Step S100: Screen the waste polyester bottle flakes and divide them into at least two parts to obtain a screening material set.

[0023] It should be noted that the screening material set includes at least two screening material items, and the screening material items respectively represent waste PET flakes of different qualities. When screening waste PET flakes, they are screened into two parts, namely the first part and the second part. At this time, the obtained screening material set consists of two screening material items. The method for obtaining the screening material set includes: setting two screening modules, setting different screening temperatures for the two screening modules respectively to obtain a screening module set; heating and vibrating the waste PET flakes based on the screening module set to respectively obtain waste PET flake fluid and waste PET flake solid, obtaining the first material item and the second material item, and using the first material item and the second material item as the screening material items respectively, thereby obtaining the screening material set. Embodiment 1

[0024] In the specific implementation process, as Figure 2 shown, the bottle flakes recycled by a certain recycling factory have complex sources, including mineral water bottles, cosmetic bottles, etc., with a melting point difference of 10 - 30 °C. Among them, the low-melting-point bottle flakes are 240 - 250 °C, and the high-melting-point bottle flakes are 260 - 270 °C. Now it is necessary to screen the two types of bottle flakes. Select a DH-1200 type double-deck vibrating screen with a diameter of 1200 mm and made of 304 stainless steel. Install a silicon carbide heating plate on the upper screen mesh with a power of 3 kW. Through the PID temperature control module, the screen surface temperature is stabilized at 150 ± 5 °C. This temperature is close to the softening point of the low-melting-point bottle flakes, changing their viscoelasticity and making them more likely to pass through the screen holes. The lower screen mesh retains the original screening function and is used to intercept the unmelted high-melting-point bottle flakes. At this time, the surface of the low-melting-point bottle flakes is slightly melted after heating, and the adhesiveness is reduced. Under the vibration action, they quickly pass through the screen holes and are collected in the A bin, while the high-melting-point bottle flakes remain rigid and slide into the B bin after being intercepted by the screen mesh, thereby respectively obtaining waste PET flake fluid and waste PET flake solid, and obtaining the first material item and the second material item.

[0025] Step S200: Based on the screening material set, heat it to melt by the melting method to obtain a molten material set.

[0026] It should be noted that the molten material set includes at least two molten material items, and the molten material items respectively represent molten waste PET flakes of different qualities. Since the obtained screening material set consists of two screening material items, there are also two molten material items. The melting method includes: based on the screening material items, setting the initial melting temperature respectively, obtaining the melting state of the screening material items to get the melting state items; setting a judgment threshold, the judgment threshold is the fluid state threshold, and judging whether the melting state items reach the judgment threshold. When the melting state items reach the judgment threshold, the corresponding melting temperature is used as the reference temperature. When the melting state items do not reach the judgment threshold, a regulation threshold is set, the regulation threshold is 5°C, and the melting temperature is regulated until the melting state items reach the judgment threshold, and the corresponding melting temperature is also used as the reference temperature to obtain the melting temperature set, and the screening material items are melted respectively with the melting temperature set.

[0027] Step S300: Based on the molten material set, extrude by the method of extrusion spinning to make it spin, and obtain at least two target wire sets.

[0028] It should be noted that as Figure 3 shown, the target wire set includes at least one type of target wire item, and the target wire item is used to represent wires of different diameters. Since the obtained first material item and second material item are melted, there are finally two molten materials, namely the first molten item and the second molten item. These two molten materials are respectively extruded to make them spin, and the extrusion spinning method is extrusion through a spinneret. The spinneret can be composed of a plurality of holes of different sizes. Therefore, when extruding and spinning through the spinneret, different holes are selected as the spinning holes, and the diameters of the obtained wires are also different, thus obtaining two target wire sets composed of wires of different diameters.

[0029] Step S400: Obtain the textile requirements to get the target requirement item, and screen the target wire set based on the target requirement item to obtain the selected wire item and the excluded wire item.

[0030] It should be noted that as Figure 4As shown, the target requirement items include diameter requirements. The methods for obtaining the selected filament items and the excluded filament items are as follows: Based on the target filament set, obtain the diameter data of the target filament set to obtain at least two diameter data sets; Set a diameter threshold based on the diameter requirement, obtain the combined results of the diameter data sets to obtain a combined result set; Obtain the combinations in the combined result set where the diameter data does not exceed the diameter threshold to obtain a target combination set; Sort the diameter data sets in ascending order of diameter to obtain at least two diameter sorted sets. Select the target diameter sorted set as the main diameter sorted set. Based on the target combination set, select the combination with the highest ranking in the main diameter sorted set in the target combination set as the calibrated combination set. Obtain the target filament based on the calibrated combination set, and then obtain the selected filament items; Set the filaments in the target filament set except for the selected filament items as the excluded filament items. Since the combination with the highest ranking in the main diameter sorted set in the target combination set is used as the calibrated combination set, and the selected target diameter sorted set is the combined result of the diameter data sets with high melting points, the higher the ranking of the main diameter sorted set, the higher the strength of the selected filament items. Embodiment 2

[0031] In a specific implementation process, the waste polyester bottle chips recycled by a certain recycling factory need to be used for the production of recycled polyester fibers. The customer's requirement is that the diameter requirement does not exceed 4 mm. After screening the raw materials, that is, waste polyester bottle chips, the first material item and the second material item are obtained and melted to obtain two melts, which are extruded through a spinneret. There are two spinnerets, which are respectively used to extrude the melts of the first material item and the second material item. The first material item is waste polyester bottle chips with a high melting point, and the second material item is waste polyester bottle chips with a low melting point. There are three holes on the first spinneret, with diameters of 1 mm, 2 mm, and 3 mm, marked as A, B, and C. There are also three holes on the second spinneret, with diameters of 1 mm, 2 mm, and 3 mm, marked as a, b, and c, to obtain two diameter data sets. At this time, according to the target requirement items, the diameter needs to not exceed 4 mm. At this time, there are a total of 6 combinations, namely Aa, Ab, Ac, Ba, Bb, and Ca, and then the target combination set is obtained. Immediately sort the diameter data sets in ascending order of diameter to obtain two diameter sorted sets, namely C > B > A and c > b > a. Select the target diameter sorted set as the main diameter sorted set, which is C > B > A. Select the combination with the highest ranking in the main diameter sorted set in the target combination set as the calibrated combination set, that is, Ca. Then obtain the target filament based on the calibrated combination set, and then obtain the selected filament items, which are C and a respectively.

[0032] Step S500: Extrusion-wind the selected filament items through a winding method to obtain composite filament items.

[0033] It should be noted that when extruding and winding the selected silk thread items, the discarded silk thread items are collected simultaneously to obtain the collected silk thread items. The winding method includes: limiting the selected silk thread items and making the selected silk thread items approach each other until they come into contact, and clamping the selected silk thread items at the same time; rotating the clamped selected silk thread items to make the selected silk thread items wind around each other to obtain the wound silk thread items, conveying the wound silk thread items, and performing adhesion and spraying at the same time to obtain the composite silk thread items.

[0034] Step S600: Strengthen the film of the composite silk thread items through an optimization method to obtain the strengthened composite items.

[0035] It should be noted that after obtaining the composite silk thread strengthened by film coating, the recycling of waste polyester bottle chips and the production of textiles are realized. The optimization method includes: setting an auxiliary heating component, obtaining finished plastic particles, heating and melting the finished plastic particles based on the auxiliary heating component to obtain the auxiliary molten items; spraying the auxiliary molten items onto the surface of the composite silk thread items to form a film on the surface of the composite silk thread items, thereby obtaining the strengthened composite items.

[0036] As Figures 5 - 9 shown, the waste polyester bottle chip recycling and textile production equipment uses the above-mentioned waste polyester bottle chip recycling and textile preparation process, including a support component 1. An wire outlet component 2 for wire outlet and a blanking component 5 for wire winding are arranged on the support component 1. A rotating component 3 for driving the blanking component 5 to rotate is arranged between the blanking component 5 and the support component 1. The support component 1 includes a support plate 101 and a support frame 102 fixed at the bottom of the support plate 101. The rotating component 3 includes a gear ring 303, and the gear ring 303 is in contact with the support frame 102. The blanking component 5 includes a plurality of first fixing plates 501 and second fixing plates 502. The first fixing plates 501 and the second fixing plates 502 are fixed on the gear ring 303. An electric push rod 503 is arranged on the first fixing plate 501. A rotating cylinder 504 and a third driving motor 505 for driving the rotating cylinder 504 to rotate are arranged at the piston end of the electric push rod 503. A battery panel 506 is fixedly connected to the second fixing plate 502 for supplying power to the electric push rod 503 and the third driving motor 505.

[0037] It should be noted that after the silk thread exits through the wire outlet component 2, it will naturally droop. At this time, the electric push rod 503 is activated to drive the rotating cylinder 504 and the third drive motor 505 to move horizontally, and the silk thread is pushed through the rotating cylinder 504, causing the silk threads to approach each other and finally come into contact. At this time, with the activation of the rotating component 3, the entire rotating cylinder 504 and the third drive motor 505 can be rotated. Since the two silk threads have come into contact with each other with the contact position of the rotating cylinder 504 as the center, as the rotating cylinder 504 rotates, the two silk threads will wind around each other, thereby achieving the combined effect of the silk threads. Since the silk threads have a certain temperature after being extruded, the wound silk threads will have a certain bonding effect. When the third drive motor 505 is activated, the wound silk threads can be conveyed downward.

[0038] As Figure 8 shown, a limiting ring 304 is fixedly connected to the gear ring 303, a limiting groove adapted to the limiting ring 304 is formed on the support frame 102, a main gear disk 302 meshing with the gear ring 303 is rotatably arranged on the support frame 102, and a second drive motor 301 for driving the main gear disk 302 to rotate is arranged on the support frame 102.

[0039] It should be noted that when the second drive motor 301 is activated to drive the main gear disk 302 to rotate, and further drive the engaged gear ring 303 to rotate, the stability of the gear ring 303 can be ensured under the action of the limiting ring 304.

[0040] As Figure 6 shown, the wire outlet component 2 includes a rotating disk 201, a plurality of docking holes are formed on the rotating disk 201, docking heads 202 are fixedly connected to the docking holes, the inner diameters of the inner walls of the docking holes are different, a wire-down hole is formed on the support plate 101, and a plurality of first drive motors 203 are fixedly connected to the support plate 101, and the first drive motors 203 are used to drive the rotating disk 201 to rotate.

[0041] It should be noted that since the inner diameters of the inner walls of the docking holes are different, when the first drive motor 203 rotates, different-sized docking holes can be aligned with the wire-down hole, and the molten waste polyester bottle chips entering the docking head 202 are extruded through the docking holes under the action of pressure.

[0042] As Figure 8 shown, a plurality of guide pieces 305 are fixedly connected to the gear ring 303, the guide pieces 305 are all inclined structures, and the spraying component 4 includes a spraying pipe 401, and a spraying head is fixedly connected to the spraying pipe 401.

[0043] It should be noted that when the gear ring 303 rotates, the guide pieces 305 with multiple inclined structures will generate a downward air flow to cool the extruded filaments. At the same time, the auxiliary molten material obtained by heating and melting the finished plastic particles by the auxiliary heating assembly will enter the spraying pipe 401, and the auxiliary molten material will be sprayed onto the surface of the composite filament item through the spraying head, so as to form a coating film on the surface of the composite filament item, and then the strengthened composite item can be obtained.

[0044] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended embodiments and their equivalents.

Claims

1. Process for preparing textiles by recycling waste polyester bottle flakes, including: Screening the waste polyester bottle flakes into at least two parts to obtain a screening material set, wherein the screening material set includes at least two screening material items, and the screening material items respectively represent waste polyester bottle flakes of different qualities; Based on the screened material set, heating is performed to melt the material set by a melting method to obtain a molten material set, wherein the molten material set includes at least two molten material items, and the molten material items respectively represent molten waste polyester bottle flakes of different qualities; Based on the molten material set, extruding the molten material set by a wire extrusion method to produce wires, thereby obtaining at least two target wire sets, wherein the target wire set includes at least one type of target wire item, and the target wire item is used to represent wires of different diameters; Features: Obtaining textile demand, obtaining target demand items, screening target thread sets based on the target demand items, obtaining selected thread items and discarded thread items; The selected silk thread items are extruded and wound by a winding method to obtain composite silk thread items, and the discarded silk thread items are collected to obtain collected silk thread items; The composite yarn items are coated and strengthened through optimization methods to obtain reinforced composite items, thereby realizing the recycling of waste polyester bottle flakes and textile production.

2. The process for preparing textiles by recycling waste polyester bottle flakes according to claim 1, characterized in that: The target requirement item includes a diameter requirement, and a method for obtaining a selected wire item and a rejected wire item includes: Based on the target wire set, obtaining diameter data of the target wire set to obtain at least two diameter data sets; A diameter threshold is set based on the diameter requirement, and a combination result of the diameter data set is obtained to obtain a combination result set; Acquire the combinations in the combination result set whose diameter data does not exceed the diameter threshold, and obtain the target combination set; Sorting the diameter data set in order of diameter size to obtain at least two diameter sorting sets, selecting the target diameter sorting set as the main diameter sorting set, selecting the target combination set with the highest main diameter sorting set as the calibration combination set based on the target combination set, obtaining the target silk thread based on the calibration combination set, and then obtaining the selected silk thread item; Set the threads except the selected thread items in the target thread set as the rejected thread items.

3. The process for preparing textiles by recycling waste polyester bottle flakes according to claim 1, characterized in that: The winding method comprises: Limiting the selected thread items, bringing the selected thread items closer to each other until they touch each other, and clamping the selected thread items at the same time; The clamped selected thread items are rotated to entangle the selected thread items with each other to obtain entangled thread items, and the entangled thread items are transported and sprayed with an adhesive to obtain composite thread items.

4. The process for preparing textiles by recycling waste polyester bottle flakes according to claim 1, characterized in that: The optimization method comprises: Setting an auxiliary heating component, obtaining finished plastic particles, heating and melting the finished plastic particles based on the auxiliary heating component, and obtaining an auxiliary melting item; The auxiliary molten item is sprayed onto the surface of the composite wire item to form a coating on the surface of the composite wire item, thereby obtaining a reinforced composite item.

5. The process for preparing textiles by recycling waste polyester bottle flakes according to claim 1, characterized in that: The method for obtaining the screening material set comprises: Setting at least one screening module, and setting different screening temperatures for each screening module to obtain a screening module set; Based on the screening module set, the waste polyester bottle flakes are heated and shaken to obtain the waste polyester bottle flakes fluid and the waste polyester bottle flakes solid, respectively, to obtain the first material item and the second material item, and the first material item and the second material item are respectively used as screening material items to obtain the screening material set.

6. The process for preparing textiles by recycling waste polyester bottle flakes according to claim 1, characterized in that: The melting method comprises: Based on the screening material items, initial melting temperatures are set respectively, and the melting states of the screening material items are obtained to obtain melting state items; A judgment threshold is set, which is a fluid state threshold. It is judged whether the melting state item reaches the judgment threshold. When the melting state item reaches the judgment threshold, the corresponding melting temperature is used as the reference temperature. When the melting state item does not reach the judgment threshold, an adjustment threshold is set to adjust the melting temperature until the melting state item reaches the judgment threshold. The corresponding melting temperature is also used as the reference temperature to obtain a melting temperature set, and the screening material items are melted respectively with the melting temperature set.

7. Waste polyester bottle flakes recycling textile production equipment, characterized by: The process for preparing textiles by recycling waste polyester bottle flakes according to any one of claims 1 to 6 comprises a support assembly (1), on which a wire-extracting assembly (2) for producing wire and a feeding assembly (5) for winding wire are arranged, and between the feeding assembly (5) and the support assembly (1) a rotating assembly (3) for driving the feeding assembly (5) to rotate is arranged, wherein the support assembly (1) comprises a support plate (101) and a support frame (102) fixed at the bottom of the support plate (101), and the rotating assembly (3) comprises a gear ring (303), and the gear ring (303) and the support frame (102) are connected to each other. 02), the unloading assembly (5) includes a plurality of first fixed plates (501) and second fixed plates (502), the first fixed plates (501) and the second fixed plates (502) are fixed on the gear ring (303), an electric push rod (503) is arranged on the first fixed plate (501), a rotating cylinder (504) and a third driving motor (505) for driving the rotating cylinder (504) to rotate are arranged at the piston end of the electric push rod (503), and a battery panel (506) is fixedly connected to the second fixed plate (502) for supplying power to the electric push rod (503) and the third driving motor (505).

8. The textile production equipment for recycling waste polyester bottle flakes according to claim 7 is characterized by: A limit ring (304) is fixedly connected to the gear ring (303), a limit groove adapted to the limit ring (304) is provided on the support frame (102), a main gear disc (302) meshing with the gear ring (303) is rotatably provided on the support frame (102), and a second drive motor (301) for driving the main gear disc (302) to rotate is provided on the support frame (102).

9. The textile production equipment for recycling waste polyester bottle flakes according to claim 7 is characterized by: The wire outlet assembly (2) comprises a rotating disk (201), the rotating disk (201) is provided with a plurality of docking holes, each docking hole is fixedly connected to a docking head (202), the inner wall diameters of the docking holes are different, a lower wire hole is provided on the support plate (101), a plurality of first drive motors (203) are fixedly connected to the support plate (101), and the first drive motors (203) are used to drive the rotating disk (201) to rotate.

10. The textile production equipment for recycling waste polyester bottle flakes according to claim 7, characterized in that: A plurality of guide plates (305) are fixedly connected to the gear ring (303), and the guide plates (305) are all inclined structures. The spray assembly (4) comprises a spray pipe (401), and a spray head is fixedly connected to the spray pipe (401).

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