ABS plate high-precision extrusion pretreatment device with efficient drying and precise feeding functions
By designing a high-precision extrusion pretreatment device for high-efficiency drying and precision feeding, the domestic ABS resin production device has solved the problems of high technical dependence and insufficient independent innovation capabilities, and achieved efficient production, stable quality and environmental protection.
Patent Information
- Application Number
- CN202422200168.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-09-09
AI Technical Summary
Domestic ABS resin production equipment relies on the introduction of technology, and has problems such as high technical dependence, insufficient independent innovation capabilities, low production efficiency, unstable product quality, large energy consumption, high maintenance costs and great environmental impact.
A high-precision extrusion pretreatment device for high-efficiency drying and precision feeding of ABS sheets is designed, including a double helix pressing chamber, a melt pump, a drying chamber and a cooling chamber. Through a double screw, multi-stage temperature control, a precision weightless feeding system and a uniformly distributed cooling channel, efficient plasticization, uniform feeding and uniform cooling of materials can be achieved.
It improves the plasticization and conveying efficiency of materials, ensures the uniformity of material temperature distribution, improves the uniformity and dimensional stability of plate thickness, stabilizes the extrusion pressure, ensures the uniform feeding of materials, reduces energy consumption, reduces waste and emissions, and improves product quality and the versatility of the production line.
Smart Images
Figure CN223001042U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of injection molding and forming of ABS materials, in particular to a high-precision pre-treatment device for ABS plates with efficient drying and precise feeding before high-precision extrusion. Background Technique
[0002] In the development process of the domestic ABS resin industry, although the demand has been continuously growing and the market scale has been expanding, the independent research and development of core technologies still faces severe challenges. The construction and operation of Chinese ABS projects mainly rely on emulsion process technology or imported foreign bulk process technology. Especially in the field of continuous bulk process, restricted by international technology blockade and raw rubber supply, the independent innovation ability needs to be strengthened. As an impact-resistant thermoplastic resin composed of acrylonitrile, butadiene, and styrene, the unique structure of ABS endows it with wide applications in many fields such as household appliances, automobiles, small appliances, transportation, and daily necessities, and the market demand is rising steadily. However, in the domestic synthesis of ABS resin by continuous bulk process, although a set of preparation processes including feeding configuration, prepolymerization, polymerization, devolatilization, and granulation have been developed, patent technology barriers are still faced. Most ABS devices mainly rely on technology introduction, and joint venture and foreign-funded enterprises occupy the dominant position. Since the first domestic ABS device was put into commercial operation in 1994, the ABS market has rapidly emerged in the field of plastic raw materials. China has now become the largest production and consumption center of ABS in Asia and even the world, and also the largest importer, but there is still room for breakthrough in terms of technological autonomy.
[0003] In summary, although the domestic ABS resin industry has made remarkable progress, there are still the following deficiencies in the synthesis of ABS resin by continuous bulk process:
[0004] High technical dependence: Most domestic ABS production devices rely on imported technologies, especially in the field of continuous bulk process, which leads to a passive situation in technology and an increase in technical costs.
[0005] Limited independent innovation: Although a complete set of preparation processes has been developed, a large amount of foreign technology still needs to be borrowed in terms of key technologies and equipment, and the independent innovation ability is insufficient.
[0006] Limited production efficiency: Existing production processes often have problems such as low efficiency and high energy consumption in the links of drying, feeding, and extrusion, which affect the overall production efficiency.
[0007] Fluctuation of product quality: Due to the lack of precision in the existing technology during the processes of drying, feeding, and extrusion, the product quality is unstable and it is difficult to meet the requirements of high-end applications.
[0008] High energy consumption: While ensuring product quality, traditional drying and feeding systems often come with high energy consumption, which is not conducive to sustainable development.
[0009] High maintenance cost: Since some core components rely on imports, the maintenance and replacement costs are relatively high, increasing the operating burden on enterprises.
[0010] Environmental impact: The existing production process may generate a large amount of waste and emissions, posing challenges to environmental protection.
[0011] Therefore, it is necessary to design a high-precision pre-treatment device for ABS plates with efficient drying and precise feeding before high-precision extrusion. Summary of the Utility Model
[0012] The purpose of the present utility model is to provide a high-precision pre-treatment device for ABS plates with efficient drying and precise feeding to solve the problems raised in the above background technology.
[0013] To solve the above technical problems, the present utility model provides the following technical solutions: A high-precision pre-treatment device for ABS plates with efficient drying and precise feeding, including a double-screw extrusion cavity, a melt pump, a drying box and a cooling cavity. A feeding cavity shell is fixedly installed at the rear end of the double-screw extrusion cavity. A driver is fixedly installed at the rear end of the feeding cavity shell. The output end of the driver is fixedly installed with a counter-rotating double screw, and the counter-rotating double screw is rotatably installed in the double-screw extrusion cavity. The output port of the melt pump is communicated with the inlet end of the feeding cavity shell. The discharge port of the drying box is communicated with the feeding port of the melt pump. A feeding port is integrally formed at the top of the drying box, and a conical hopper is fixedly installed at the feeding port. A cooling cavity is provided at the front end of the double-screw extrusion cavity.
[0014] According to the above technical solution, a number of temperature control rings are fixedly installed at equal intervals on the outer periphery of the double-screw extrusion cavity. An electric heating component is provided in each temperature control ring, and a temperature sensor is provided between each temperature control ring and the double-screw extrusion cavity.
[0015] According to the above technical solution, a regulating valve is fixedly installed at the bottom of the conical hopper. A controller is fixedly installed on the driving side of the regulating valve, and the output end of the controller is power-connected to the regulating valve.
[0016] According to the above technical solution, an air inlet cavity is formed in the drying box by a mesh partition board. A blower is fixedly installed in the air inlet cavity. A sliding plate is fixedly installed on the upper part of the right inner wall of the drying box. A lower air net is fixedly installed between the lower end of the sliding plate and the left end of the grid plate. A number of heating grid plates are fixedly installed on the right side of the lower air net. A heating controller is fixedly installed on the right outer wall of the drying box, and the heating controller is electrically connected to the heating grid plates.
[0017] According to the above technical solution, air coolers are fixedly installed on both the upper surface and the lower surface of the cooling chamber at equal intervals. A number of air vents are provided on both the top plate and the bottom plate of the cooling chamber. The air vents cooperate with the air coolers. Transmission boxes are fixedly installed on both the side outer wall and the right outer wall of the cooling chamber. A number of output ends of the transmission boxes are fixedly installed with rollers, and the rollers are arranged inside the cooling chamber.
[0018] According to the above technical solution, the outlet of the double - spiral extrusion chamber is subjected to high - precision polishing treatment, and the screw blades of the counter - rotating double - screw are of variable pitch.
[0019] According to the above technical solution, a pressure sensor is embedded at the outlet of the double - spiral extrusion chamber. The pressure sensor is feedback - connected to the lower computer, and the lower computer is control - connected to the melt pump.
[0020] According to the above technical solution, a window is provided on the left side wall of the drying box. An exhaust net is embedded in the window. A number of anti - reverse - wind diversion plates are fixedly installed inside the exhaust net, and the anti - reverse - wind diversion plates are at an angle of 45°.
[0021] According to the above technical solution, a material - gathering groove is fixedly installed inside the drying box on the right side of the air - inlet chamber. The material - gathering groove is matched with the feed port of the melt pump.
[0022] Compared with the prior art, the beneficial effects achieved by the present utility model are as follows:
[0023] In the present utility model, the special geometric shape of the counter - rotating double - screw improves the material plasticization and conveying efficiency. The multi - stage temperature control ensures the uniformity of the material temperature distribution. The optimization of the outlet of the double - spiral extrusion chamber improves the uniformity of the plate thickness and the dimensional stability. The introduction of the melt pump stabilizes the extrusion pressure. The drying system and the precision loss - in - weight feeding system ensure the uniform feeding of the material, avoiding the fluctuation of the melt pressure. The temperature sensor and the pressure sensor ensure the stability of the process conditions. The uniformly distributed cooling channels and the precise temperature control work together to improve the uniformity of the plate cooling process and the quality of the final product. By setting uniformly distributed cooling channels in the cooling chamber and adopting an accurate temperature control strategy, the temperature uniformity of the plate during the cooling process is improved, thereby improving the surface quality and dimensional stability of the final product. Through the modular design, the equipment can easily adapt to the production requirements of products with different specifications and materials, improving the versatility and expandability of the production line. By using environmentally friendly materials and technologies, the waste and emissions generated during the production process are reduced, and the impact on the environment is lowered. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model, and do not constitute a limitation to the present utility model. In the drawings:
[0025] Figure 1 is a three-dimensional view structural diagram of the utility model;
[0026] Figure 2 is a one-perspective three-dimensional structural diagram of the extrusion device of the utility model;
[0027] Figure 3 is a top cross-sectional structural diagram of the extrusion device of the utility model;
[0028] Figure 4 is a one-perspective three-dimensional structural diagram of the melt pump of the utility model;
[0029] Figure 5 is a one-perspective three-dimensional structural diagram of the precision loss-in-weight feeder device of the utility model;
[0030] Figure 6 is a one-perspective three-dimensional structural diagram of the drying device of the utility model;
[0031] Figure 7 is a cross-sectional structural diagram of the drying device of the utility model;
[0032] Figure 8 is a one-perspective three-dimensional structural diagram of the cooling channel of the utility model;
[0033] Figure 9 is a cross-sectional structural diagram of the cooling channel of the utility model.
[0034] In the figure: 100, driver; 200, injection cavity shell; 300, twin-screw extrusion cavity; 301, temperature control ring; 302, counter-rotating twin screws; 400, melt pump; 500, conical hopper; 501, controller; 502, regulating valve; 600, drying oven; 601, air inlet cavity; 602, heating controller; 603, feed inlet; 604, fan; 605, heating grid plate; 606, sliding material plate; 607, lower air net; 608, anti-backwind deflector; 609, exhaust net; 610, material collecting trough; 700, cooling cavity; 701, air cooler; 702, transmission box; 703, roller; 704, air outlet. Detailed implementation manners
[0035] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts belong to the protection scope of the present utility model.
[0036] Please refer toFigures 1-9 , the present utility model provides a technical solution: a high-precision pre-treatment device for ABS plates with efficient drying and precise feeding, including a double-screw extrusion chamber 300, a melt pump 400, a drying oven 600 and a cooling chamber 700. A feeding chamber shell 200 is fixedly installed at the rear end of the double-screw extrusion chamber 300. A driver 100 is fixedly installed at the rear end of the feeding chamber shell 200. An output end of the driver 100 is fixedly installed with a counter-rotating double screw 302. The counter-rotating double screw 302 is rotatably installed in the double-screw extrusion chamber 300. An output port of the melt pump 400 is communicated with an inlet end of the feeding chamber shell 200. An outlet of the drying oven 600 is communicated with a feeding port 603 of the melt pump 400. A feeding port 603 is integrally formed at the top of the drying oven 600. A conical hopper 500 is fixedly installed at the feeding port 603. A cooling chamber 700 is arranged at the front end of the double-screw extrusion chamber 300.
[0037] The double-screw extrusion chamber 300 and the counter-rotating double screw 302 cooperate to form a double-screw extrusion device. Cooperating with the feeding chamber shell 200 and the driver 100, the extrusion and injection function is realized. The melt pump 400 controls the feeding stability of the double-screw extrusion device. The drying oven 600 dries the material entering the melt pump 400 to avoid removing the moisture in the material and prevent the moisture from vaporizing at high temperature, which may cause bubbles and size instability of the plate. The conical hopper 500 effectively guides the material, and the cooling chamber 700 cools the formed plate.
[0038] Specifically, a plurality of temperature control rings 301 arranged at equal intervals are fixedly installed on the outer periphery of the double-screw extrusion chamber 300. An electric heating component is arranged in the temperature control ring 301. A temperature sensor is arranged between each temperature control ring 301 and the double-screw extrusion chamber 300.
[0039] By arranging the temperature control rings 301 on the outer periphery of the double-screw extrusion chamber 300 and cooperating with the stability sensor, the molten material in the double-screw extrusion chamber 300 is effectively and stably balanced. At the same time, the stability sensor is connected to the lower computer, and the lower computer feedback-controls the temperature control rings 301.
[0040] Specifically, a regulating valve 502 is fixedly installed at the bottom of the conical hopper 500. A controller 501 is fixedly installed on a driving side of the regulating valve 502. An output end of the controller 501 is power-connected to the regulating valve 502.
[0041] The regulating valve 502 controls the feeding amount and feeding speed of the conical hopper 500. The controller 501 adopts weight loss feedback control, and then forms an overall precision weight loss feeding system.
[0042] Specifically, an air inlet chamber 601 is formed inside the drying oven 600 by a mesh partition board. A blower 604 is fixedly installed inside the air inlet chamber 601. A slide plate 606 is fixedly installed on the upper part of the right inner wall of the drying oven 600. An air net 607 is fixedly installed between the lower end of the slide plate 606 and the left end of the grid plate. A plurality of heating grid plates 605 are fixedly installed on the right side of the air net 607 at equal intervals. A heating controller 602 is fixedly installed on the right outer wall of the drying oven 600. The heating controller 602 is electrically connected to the heating grid plates 605.
[0043] The air inlet chamber 601 provides an installation basis for the blower 604 and effectively guides external air into the drying oven 600 at the same time. The slide plate 606 and the air net 607 cooperate to form a stable material flow curtain, improving the drying effect. The heating grid plates 605 heat the air flow, then form drying air, and then blow-dry the material flow curtain. The heating controller 602 effectively controls the heating of the heating grid plates 605.
[0044] Specifically, air coolers 701 are fixedly installed at equal intervals on both the upper surface and the lower surface of the cooling chamber 700. A plurality of air vents 704 are provided on both the top plate and the bottom plate of the cooling chamber 700. The air vents 704 cooperate with the air coolers 701. Transmission boxes 702 are fixedly installed on both the side outer wall and the right outer wall of the cooling chamber 700. A plurality of rollers 703 are fixedly installed at the output ends of the transmission boxes 702. The rollers 703 are arranged inside the cooling chamber 700.
[0045] The air coolers 701 generate cooling air flow to blow cold air inside the cooling chamber 700. At the same time, through equal interval arrangement, different cooling at different positions is realized. The transmission boxes 702 are connected to external power devices to drive the rollers 703, and then effectively drive and control the plates thereon.
[0046] Specifically, the outlet of the double-screw extrusion chamber 300 is subjected to high-precision polishing treatment, and the screw blades of the counter-rotating double screws 302 have a gradually changing pitch.
[0047] The high-precision polishing treatment reduces the friction of the melt during the flow process. At the same time, a coat hanger die head is installed at the outlet of the double-screw extrusion chamber 300, and the same high-precision polishing treatment is carried out to ensure that the flow path length of the melt inside the die head is the same, thereby reducing the difference in flow resistance and improving the uniformity of the plate thickness. The counter-rotating double screws 302 with a gradually changing pitch are used to improve the plasticization and conveying efficiency of the material and reduce the melt pressure fluctuation.
[0048] Specifically, a pressure sensor is embedded at the outlet of the double-screw extrusion chamber 300. The pressure sensor is feedback-connected to a lower computer, and the lower computer is control-connected to a melt pump 400.
[0049] Through the setting of the pressure sensor and in cooperation with the lower computer, feedback control of the melt pump 400 is achieved, thereby stabilizing the pressure and flow of the material supplied by the melt pump 400.
[0050] Specifically, a window is provided on the left side wall of the drying oven 600. An exhaust air net 609 is embedded in the window. A number of anti-backflow guide plates 608 are fixedly installed inside the exhaust air net 609. The anti-backflow guide plates 608 are at an angle of 45°.
[0051] Through the exhaust air port 704 and in cooperation with the anti-backflow guide plates 608, the air flow after drying the material is effectively discharged, while preventing the air flow from flowing back, so as not to affect the downward movement of the material.
[0052] Specifically, a material collecting tank 610 is fixedly installed inside the drying oven 600 on the right side of the air inlet chamber 601. The material collecting tank 610 cooperates with the feed inlet 603 of the melt pump 400.
[0053] Through the setting of the material collecting tank 610, the material can be effectively guided to the feed inlet 603 of the melt pump 400.
[0054] Working principle: During use, the material is introduced into the drying oven 600 through the precision loss-in-weight feeding system. After being effectively dried in the drying oven 600, the material is guided to the melt pump 400. The melt pump 400 supplies the material with stable pressure and flow. Then it is guided to the injection cavity housing 200, and then the material is discharged to the coat hanger die through the double-screw extrusion device to form a sheet. The sheet enters the cooling channel and is effectively cooled to form a stable sheet structure. It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.
[0055] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent substitution on some of the technical features. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. A high-precision extrusion pre-treatment device for ABS sheet with high efficiency drying and precision feeding, comprising a double-screw extrusion chamber (300), a melt pump (400), a drying box (600) and a cooling chamber (700), wherein a material injection chamber shell (200) is fixedly installed at the rear end of the double-screw extrusion chamber (300), a driver (100) is fixedly installed at the rear end of the material injection chamber shell (200), a counter-rotating twin screw (302) is fixedly installed at the output end of the driver (100), and the counter-rotating twin screw (302) is fixedly installed at the output end of the driver (100). 02) is rotatably installed in the double-screw extrusion chamber (300), the output port of the melt pump (400) is connected to the inlet end of the injection chamber shell (200), the discharge port of the drying box (600) is connected to the feed port (603) of the melt pump (400), the top of the drying box (600) is integrally formed with a feed port (603), and the feed port (603) is fixedly installed with a conical hopper (500), and the front end of the double-screw extrusion chamber (300) is provided with a cooling chamber (700).
2. The high-precision extrusion pre-treatment device for ABS sheet with high-efficiency drying and precision feeding according to claim 1 is characterized by: A plurality of equidistantly arranged temperature control rings (301) are fixedly mounted on the outer periphery of the double-screw extrusion chamber (300), an electric heating component is arranged inside the temperature control ring (301), and a temperature sensor is arranged between each temperature control ring (301) and the double-screw extrusion chamber (300).
3. The high-precision extrusion pre-treatment device for ABS sheet with high-efficiency drying and precision feeding according to claim 1 is characterized by: A regulating valve (502) is fixedly installed at the bottom of the conical hopper (500), a controller (501) is fixedly installed on the driving side of the regulating valve (502), and an output end of the controller (501) is dynamically connected to the regulating valve (502).
4. The high-precision extrusion pre-treatment device for ABS sheet with high-efficiency drying and precise feeding according to claim 1 is characterized by: The drying box (600) has an air inlet chamber (601) formed by a mesh partition plate, and a fan (604) is fixedly installed in the air inlet chamber (601). A sliding plate (606) is fixedly installed on the upper part of the right inner wall of the drying box (600), and a lower air net (607) is fixedly installed between the lower end of the sliding plate (606) and the left end of the mesh plate. A plurality of equidistantly arranged heating grids (605) are fixedly installed on the right side of the lower air net (607). A heating controller (602) is fixedly installed on the right outer wall of the drying box (600), and the heating controller (602) is electrically connected to the heating grid (605).
5. The high-precision extrusion pre-treatment device for ABS sheet with high-efficiency drying and precise feeding according to claim 1 is characterized by: The upper surface and the lower surface of the cooling cavity (700) are both fixedly mounted with air coolers (701) arranged at equal intervals, the top plate and the bottom plate of the cooling cavity (700) are both provided with a plurality of air vents (704), the air vents (704) cooperate with the air coolers (701), the side outer wall and the right outer wall of the cooling cavity (700) are both fixedly mounted with a transmission box (702), the plurality of output ends of the transmission box (702) are both fixedly mounted with rollers (703), and the rollers (703) are arranged in the cooling cavity (700).
6. The high-precision extrusion pre-treatment device for ABS sheet with high efficiency drying and precision feeding according to claim 2 is characterized by: The outlet of the double-screw extrusion chamber (300) is polished with high precision, and the spiral blades of the counter-rotating twin screws (302) have a gradually changing pitch.
7. The high-precision extrusion pre-treatment device for ABS sheet with high-efficiency drying and precise feeding according to claim 6 is characterized by: A pressure sensor is embedded at the outlet of the double-screw extrusion chamber (300), and the pressure sensor is connected to a lower computer for feedback, and the lower computer is controlled to connect to a melt pump (400).
8. The high-precision extrusion pre-treatment device for ABS sheet with high-efficiency drying and precise feeding according to claim 4 is characterized by: A window is provided on the left side wall of the drying box (600), and an exhaust net (609) is embedded in the window. A plurality of anti-adverse wind deflectors (608) are fixedly installed on the inner side of the exhaust net (609), and the anti-adverse wind deflectors (608) are at an angle of 45°.
9. The high-precision extrusion pre-treatment device for ABS sheet with high-efficiency drying and precise feeding according to claim 4 is characterized by: A material collecting trough (610) is fixedly installed in the drying box (600) on the right side of the air inlet chamber (601), and the material collecting trough (610) cooperates with the feed port (603) of the melt pump (400).