Plastic product forming processing production line
By integrating the feeding system, sheet forming system, and product forming system, and adopting multi-layer co-extrusion and independent thermoforming station, the problem of balancing efficiency and cost in plastic product production has been solved, achieving high-efficiency and low-cost production.
Patent Information
- Application Number
- CN202520386880.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-03-06
AI Technical Summary
In existing plastic product manufacturing methods, it is difficult to balance production efficiency and production cost. Blow molds and injection molds are huge and have high manufacturing costs, resulting in high equipment costs and energy consumption. In addition, multiple sets of equipment are required to improve efficiency, which leads to increased costs.
It adopts a feeding system, a sheet forming system, a flattening and conveying system, and a product forming system, including a screw extrusion module, a hot flattening and conveying equipment, and a control system. Through multi-layer co-extrusion and independent thermoforming stations, it achieves efficient sheet forming and cutting, reducing equipment footprint and cost.
While improving production efficiency, it reduces equipment footprint and production costs, increases material forming rate and product yield, and reduces energy consumption.
Smart Images
Figure CN223877516U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of plastic forming, especially to a plastic product forming processing production line. BACKGROUND
[0002] Plastic products have become an indispensable part of modern life with their light weight, durability, easy processing and cost-effectiveness, and with the wide application of plastic products in various fields, the related technology and process have also been greatly developed. The current production method of plastic products mainly includes injection molding or blow molding process. For example, the logistics transfer tray or similar products are often made of polypropylene (PP) and polyethylene (PE) by injection molding or blow molding.
[0003] However, the blow molding die and injection molding die of similar products have huge specific volume, high manufacturing cost and low utilization rate. Each blow molding equipment or injection molding equipment can only be equipped with a set of production die, which has low production efficiency, large floor area, high equipment cost and high energy consumption. If the production efficiency needs to be improved, multiple blow molding or injection molding equipment needs to be equipped, which greatly increases the equipment cost and labor cost.
[0004] Therefore, how to improve the production efficiency while considering the production cost is an important issue to be solved at present. UTILITY MODEL CONTENT
[0005] The utility model provides a plastic product forming processing production line to solve the defects that the production efficiency and production cost are difficult to be considered in the prior art, which can improve the production efficiency and possibly reduce the production cost.
[0006] The utility model provides a plastic product forming processing production line, which comprises:
[0007] A feeding system is used for weighing and conveying raw materials.
[0008] A sheet forming system is connected with the feeding system and is used for forming the weighed raw materials into sheets.
[0009] A flattening and conveying system is connected with the sheet forming system and is used for flattening and conveying the sheets.
[0010] A product forming system is connected with the flattening and conveying system, and the product forming system is provided with a cutting station and a plurality of plastic suction stations and is used for cutting and forming the sheets into plastic products.
[0011] According to the plastic product forming processing production line, the flattening and conveying system comprises a hot flattening and conveying device.
[0012] The utility model provides a kind of plastic product forming processing production line, and the sheet forming system includes:
[0013] Screw extrusion module, with the feed system link, for the raw material after weighing melt, mixing, reaction and extrusion;
[0014] Extrusion die, with the screw extrusion module link, for the melt of the screw extrusion module extrusion is shaped into sheet.
[0015] According to the utility model provides a kind of plastic product forming processing production line, the screw extrusion module includes respectively with the feed system link intermediate layer extrusion mechanism and surface layer extrusion mechanism;The intermediate layer extrusion mechanism and the surface layer extrusion mechanism are connected with the extrusion die by melt distributor.
[0016] According to the utility model provides a kind of plastic product forming processing production line, the intermediate layer extrusion mechanism includes first screw extruder, second screw extruder and foaming agent injection equipment;
[0017] The first screw extruder is connected with the feed system, the inlet of the second screw extruder is connected with the outlet of the first screw extruder, and the outlet is connected with the melt distributor;The second screw extruder is equipped with foaming section, and the foaming agent injection equipment is connected with the foaming section.
[0018] According to the utility model provides a kind of plastic product forming processing production line, the surface layer extrusion mechanism includes third screw extruder, and the inlet of the third screw extruder is connected with the feed system, and the outlet is connected with the melt distributor.
[0019] According to the utility model provides a kind of plastic product forming processing production line, the first screw extruder adopts double screw extruder, the second screw extruder adopts single screw extruder, and the third screw extruder adopts double screw extruder.
[0020] According to the utility model provides a kind of plastic product forming processing production line, still include control system, and the control system includes temperature control module and centralized control module;The temperature control module is used to adjust the working temperature of equipment in each system, and the centralized control module is used to carry out linkage control to equipment in each system.
[0021] According to the utility model provides a kind of plastic product forming processing production line, still include the dehumidification drying system being set in the feed system upstream;The dehumidification drying system at least includes auxiliary agent dehumidification drying module, nucleating agent dehumidification drying module, chain extender dehumidification drying module, back material dehumidification drying module and new material dehumidification drying module.
[0022] The product forming system is further provided with a trimming station located downstream of the vacuum molding station and a stacking station located downstream of the trimming station.
[0023] The plastic product forming processing production line provided by the utility model, raw materials are conveyed to the sheet forming system after being weighed by the feeding system, the sheet forming system can form the raw materials into sheets, the sheets are conveyed to the product forming system after being pressed flat by the pressing conveying system, the product forming system is provided with a cutting station and multiple vacuum molding stations, the sheets are cut according to the required specifications of products on the cutting station, and the cut sheets enter the multiple vacuum molding stations respectively, each vacuum molding station can be operated independently, so that the sheets on different vacuum molding stations are simultaneously vacuum molded, compared with the blow molding and injection molding production lines in the related art, the production efficiency can be improved while the floor area of the equipment is reduced, and the production cost is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0024] In order to more clearly illustrate the technical solutions of the utility model or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows, obviously, the drawings in the following description are some embodiments of the utility model, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of the drawings.
[0025] Figure 1 It is a structure schematic view of the plastic product forming processing production line provided by the utility model embodiment.
[0026] Reference signs:
[0027] 10, feeding system; 20, sheet forming system; 200, extrusion die; 210, first screw extruder; 211, second screw extruder; 220, third screw extruder; 30, pressing conveying system; 40, product forming system; 400, cutting station; 410, vacuum molding station; 420, trimming station; 430, stacking station; 50, dehumidification drying system; 500, auxiliary agent dehumidification drying module; 510, nucleating agent dehumidification drying module; 520, chain extender dehumidification drying module; 530, return material dehumidification drying module; 540, new material dehumidification drying module; 60, control system; 600, temperature control module; 610, centralized control module. DETAILED DESCRIPTION
[0028] In order to make the purpose, technical scheme and advantages of the utility model clearer, the technical scheme of the utility model will be described clearly and completely in combination with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.
[0029] In order to better understand the plastic product forming processing production line provided by the embodiments of the utility model, the application background thereof is introduced first. At present, the production method of plastic products mainly includes injection molding or blow molding process. Taking logistics transfer pallet or similar products as an example, polypropylene (PP) and polyethylene (PE) are often used as materials to form by injection molding or blow molding.
[0030] However, the blow mold and injection mold of similar products have huge specific volume, high manufacturing cost and low utilization rate. Each blow molding equipment or injection molding equipment can only be equipped with a set of production mold, and the production efficiency is low, the land occupation is large, the equipment cost is high and the energy consumption is high. If the production efficiency needs to be improved, multiple blow molding or injection molding equipment needs to be equipped, which greatly increases the equipment cost and labor cost.
[0031] Therefore, how to improve the production efficiency while minimizing the production cost is an important problem to be solved at present.
[0032] In view of the above problems, the embodiments of the utility model provide a plastic product forming processing production line, which can improve the production efficiency while minimizing the production cost.
[0033] The plastic product forming processing production line of the utility model will be described below in combination with Figure 1 The plastic product forming processing production line of the utility model will be described below in combination with
[0034] Referring to Figure 1 A plastic product forming processing production line at least includes a feeding system 10, a sheet forming system 20, a flattening conveying system 30 and a product forming system 40. The feeding system 10 is suitable for weighing and transporting raw materials. The sheet forming system 20 is connected with the feeding system 10, which is used for forming the weighed raw materials into sheets. The flattening conveying system 30 is connected with the sheet forming system 20, which is used for flattening and conveying the sheets. The product forming system 40 is connected with the flattening conveying system 30, and the product forming system 40 is provided with a cutting station 400 and a plurality of plastic suction stations 410, which is used for cutting the sheets and forming plastic products.
[0035] In actual application, the raw materials are weighed by the feeding system 10 and then conveyed to the sheet forming system 20, the sheet forming system 20 can form the raw materials into sheets, the sheets are pressed and conveyed to the product forming system 40 by the flattening conveying system 30, the product forming system 40 is provided with a cutting station 400 and a plurality of plastic suction stations 410, the sheets are cut according to the required specifications of the products on the cutting station 400, and the cut sheets enter the plurality of plastic suction stations 410 respectively, each plastic suction station 410 can be independently operated, so that the sheets on different plastic suction stations 410 are simultaneously formed by plastic suction, compared with the traditional blow molding and injection molding production line, the production efficiency can be improved, the land occupation area of the equipment can be reduced, and the production cost can be reduced.
[0036] In an embodiment of the utility model, the feeding system 10 can adopt the existing central feeding system 10, for example, CJ-ZY series, SWITEK series and the like, and the specific model and specification can be flexibly configured according to actual requirements such as production scale, which is not limited in the embodiment of the utility model.
[0037] Generally, the feeding system 10 is provided with a raw material storage device, a conveying device and a metering device; wherein the raw material storage device is used to store raw materials to avoid production interruption caused by raw material shortage, and the common raw material storage devices include silos, storage tanks and the like; the conveying device is used to convey the raw materials from the storage device to the production equipment or processing area, and the common conveying devices include belt conveyors, screw conveyors, pneumatic conveying systems and the like; and the metering device can accurately measure the supply amount of various raw materials, and the common metering devices include weighing sensors, flow meters and the like.
[0038] It should be pointed out here that the above is only a brief description of the structure and working principle of the feeding system 10, and the purpose is to facilitate the understanding of the working process and function of the feeding system 10, of course, the feeding system 10 can also include other structures or devices, and the structure and working principle of the feeding system 10 are not changed in the embodiment of the utility model, and the more specific structure can refer to the prior art, which is not described in detail in the embodiment of the utility model.
[0039] In order to avoid the adverse effects of moisture in the raw materials on the quality of the plastic products, in an embodiment of the utility model, the plastic product forming and processing production line further comprises a dehumidifying and drying system 50, and the dehumidifying and drying system 50 is used to dehumidify and dry the raw materials.
[0040] According to the different types of raw materials, the dehumidification and drying system 50 can also be provided with multiple dehumidification modules for separately dehumidifying and drying different raw materials. In an embodiment of the present application, the raw materials include main materials (such as PET) and auxiliary materials (such as nucleating agents, chain extenders, and modified additives). Therefore, the dehumidification and drying system 50 at least includes an additive dehumidification and drying module 500, a nucleating agent dehumidification and drying module 510, a chain extender dehumidification and drying module 520, a recycled material dehumidification and drying module 530, and a new material dehumidification and drying module 540.
[0041] Generally, each dehumidification and drying module includes an inlet portion, a dehumidification and drying portion, and an outlet portion. The inlet portion is used to transport raw materials from a barrel or other storage container to the dehumidification and drying portion, which can be a vacuum conveyor. The dehumidification and drying portion is used to dehumidify and dry the materials. Based on different working principles and forms, the dehumidification and drying portion has multiple selectable types, such as adsorption dehumidifiers, refrigeration dehumidifiers, rotary dehumidifiers, vacuum drying systems, and hot air circulating drying boxes. The specific type can be selected flexibly according to different needs. Sometimes, different types of dehumidifiers can be used in combination to improve the dehumidification and drying effect. The outlet portion is mainly used to transport the dried materials to the feeding system 10. In order to avoid the dried materials from being humidified by contacting with external humid air and to ensure the transportation efficiency, the outlet portion can use a vacuum conveyor.
[0042] Similarly, the above is only a brief description of the structure and working principle of the dehumidification and drying module, which is to facilitate a better understanding of the working process and function of the dehumidification and drying module. Of course, the dehumidification and drying module can also include other structures or devices. The structure and working principle of the dehumidification and drying module are not changed in the embodiment of the present application. The more specific structure can refer to the prior art, which is not described in detail in the embodiment of the present application.
[0043] Different raw materials are transported to the feeding system 10 after being dehumidified and dried by the dehumidification and drying module. The feeding system 10 can precisely weigh various raw materials and transport them to the sheet forming system 20 for sheet forming. In an embodiment of the present application, the sheet forming system 20 includes a screw extrusion module and an extrusion die 200. The screw extrusion module is connected to the feeding system 10 and is used to melt, mix, react, and extrude the weighed raw materials. The extrusion die 200 is connected to the screw extrusion module and is used to form the molten material extruded by the screw extrusion module into a sheet.
[0044] The structure or form of the screw extrusion module and the extrusion die 200 can be flexibly selected according to different production needs, such as the shape, size, performance requirements, and other factors of the sheet, to ensure that the produced sheet meets the required specifications and performance standards.
[0045] In one embodiment of the utility model, screw extrusion module includes respectively with feeding system 10 the interface middle layer extrusion mechanism and surface layer extrusion mechanism, wherein, middle layer extrusion mechanism and surface layer extrusion mechanism are connected with base mould through melt distributor.
[0046] Specifically, various raw materials including main material (for example PET), auxiliary material (for example nucleating agent, chain extender, modified auxiliary agent) are respectively conveyed to middle layer extrusion mechanism and surface layer extrusion mechanism after precision weighing through feeding system 10, middle layer extrusion mechanism is used to extrude middle layer melt, surface layer extrusion mechanism is used to extrude surface layer melt, middle layer melt and surface layer melt enter extrusion mould 200 after passing through melt distributor, surface layer melt is wrapped with middle layer melt and is extruded through the opening of extrusion mould 200 together, and is formed into multilayer co-extrusion sheet.
[0047] It needs to be pointed out here that melt distributor is a kind of equipment for diverting and distributing thermoplastic melt flow, which can be connected with multiple extrusion heads and uniformly distribute melt flow into multiple layers to manufacture multilayer preform.The specific structure and working principle of melt distributor can refer to prior art, and the specific structure and working principle of melt distributor are not changed in the embodiment of the utility model, thus the specific structure of melt distributor is not described in the embodiment of the utility model.Furthermore, the model, specification parameters and the like of melt distributor can be flexibly selected according to different actual requirements, such as the number of layers, specifications and performance standards of sheet, and the embodiment of the utility model does not make specific limitation.
[0048] In one embodiment of the utility model, middle layer extrusion module includes first screw extruder 210, second screw extruder 211 and foaming agent injection equipment;Wherein, the feed inlet of first screw extruder 210 is connected with feeding system 10, the outlet is connected with the inlet of second screw extruder 211, and the outlet of second screw extruder 211 is connected with melt distributor;Second screw extruder 211 is provided with foaming section, and foaming agent injection equipment is connected with foaming section.
[0049] Specifically, various raw materials including main material (for example PET), auxiliary material (for example nucleating agent, chain extender, modified auxiliary agent) are conveyed to first screw extruder 210 after precision weighing through feeding system 10, and the raw materials are input into second screw extruder 211 after melting, mixing and reaction to reach specified melt strength in first screw extruder 210, and the melt is fully mixed with foaming agent injected by foaming agent injection equipment to generate middle layer melt in foaming section, and the middle layer melt is extruded by second screw extruder 211.
[0050] Specifically, the first screw extruder 210 and the second screw extruder 211 are connected by a melt pump, and the raw material is transported to the second screw extruder 211 by the melt pump after forming a melt in the first screw extruder 210.
[0051] Specifically, the first screw extruder 210 can be a double-screw extruder, and the second screw extruder 211 can be a double-screw extruder.
[0052] Specifically, the foaming agent can be supercritical carbon dioxide or an alkane foaming agent.
[0053] In an embodiment of the utility model, the surface layer extrusion mechanism includes a third screw extruder 220, the raw material is transported to the third screw extruder 220 after being precisely weighed by the feeding system 10, and the raw material forms a surface layer melt after melting, mixing and reacting to reach a specified melt strength in the third screw extruder 220.
[0054] Specifically, the third screw extruder 220 can be a double-screw extruder.
[0055] It should be noted that the specific model and specification of the first screw extruder 210, the second screw extruder 211 and the third screw extruder 220 can be selected according to actual needs such as production capacity design, and the embodiment of the utility model does not make specific limitations.
[0056] Through the above technical solution, the intermediate layer extrusion mechanism can extrude a foamed intermediate layer melt, the surface layer extrusion mechanism can extrude a surface layer melt, the foamed intermediate layer melt starts to foam at the extrusion die 200 after passing through the melt distributor, the surface layer melt wraps the foamed layer melt up and down after passing through the melt distributor, and then extrudes together with the foamed layer intermediate melt through the opening of the extrusion die 200, and the process is a three-layer co-extrusion foamed sheet. The plastic product formed by the above sheet can greatly improve the weight bearing ratio of the plastic product.
[0057] The specific model and specification of the extrusion die 200 can be selected according to actual needs. As a specific embodiment of the utility model, the extrusion die 200 adopts a clothes hanger type die, the effective width range of the clothes hanger type die is 900-1800mm, the opening thickness is 2-6mm, and the clothes hanger type die is arranged downwardly at an angle of 15°, which facilitates the delivery of the three-layer co-extrusion sheet drawn down to the sheet flattening conveying system 30.
[0058] It should be noted here that the clothes hanger type die is a commonly used die structure in the extrusion plate (sheet) forming production, and its specific structure and working principle can refer to the prior art, and the embodiment of the utility model does not make redundant description.
[0059] It can be understood that the extrusion die 200 includes but is not limited to the structure form listed above, and other structure forms of the extrusion die 200 can be applied as long as the sheet forming can be realized.
[0060] In an embodiment of the utility model, the flattening conveying system 30 adopts a hot flattening conveying device, the three-layer co-extrusion sheet under the flow casting is sent to the hot flattening conveying device, and after being flattened by the hot flattening conveying device, is sent to the product forming system 40.
[0061] By this arrangement, the three-roll calendering device on the original three-layer co-extrusion device is replaced by the hot flattening conveying device, so that the sheet is always kept above the crystallization temperature during the conveying process, thereby realizing the process of direct blister molding above the crystallization temperature of the material (for example, PET), avoiding the process of the traditional plastic product which needs to send the already cooled sheet to the blister machine for heating again, thereby avoiding the crystallization embrittlement of the material which is easy to occur during the production and processing process, and improving the forming rate of the material and the good product rate of the product.
[0062] Generally, the hot flattening conveying device generally includes a polytetrafluoroethylene conveying belt, a herringbone-shaped compression roller, a heater, a rack, a heat preservation cover and the like, the polytetrafluoroethylene conveying belt transmits the temperature of the heater to the sheet, and the sheet can be pressed and flattened by the compression roller arranged in a herringbone shape under the condition that the sheet is not adhered, so that the transverse and longitudinal tensile strength of the sheet is improved.
[0063] It should be pointed out here that the above is only a brief description of the structure and principle of the hot flattening conveying device, and the purpose is to facilitate the understanding of the working process and function of the hot flattening conveying device, of course, the hot flattening conveying device can also include other structures, and the structure and working principle of the hot flattening conveying device are not changed in the embodiment of the utility model, and the more specific structure can refer to the prior art, which is not described in detail in the embodiment of the utility model. In addition, the model, specification parameters and the like of the hot flattening conveying device can be flexibly selected according to different actual needs, and the embodiment of the utility model is not limited specifically.
[0064] In an embodiment of the utility model, the product forming system 40 is provided with a cutting station 400 and a plurality of blister stations 410, wherein the cutting station 400 is provided with a cross cutting machine for cutting the sheet according to the required product specification, and each blister station 410 is provided with a blister mold, and the cut sheet is sent to the blister mold for blister molding after being fixed on four sides.
[0065] The specific structure and working principle of the cross cutting machine and the blister mold can refer to the prior art, and are not described in detail in the embodiment of the utility model. The specific model and specification of the cross cutting machine and the blister mold can be selected according to the actual needs of the product, and the embodiment of the utility model is not limited specifically.
[0066] Specifically, the plastic suction station 410 is provided with at least two, the plastic suction mold on the two plastic suction stations 410 can work cooperatively, and each mold is moved to the next station to wait for plastic suction forming after being filled. When the extrusion speed is improved, three or more than four plastic suction stations 410 can be arranged to adapt to the production capacity demand.
[0067] In an embodiment of the utility model, the product forming system 40 is further provided with a trimming station 420 and a stacking station 430; wherein the trimming station 420 is located downstream of the plastic suction station 410, the trimming station 420 is provided with a trimming machine, the trimming machine can be a laser trimming machine in particular, and the plastic product is debonded and trimmed by the laser trimming machine; the stacking station 430 is arranged downstream of the trimming station 420, and the stacking station 430 is provided with a stacking manipulator device, and the stacking manipulator device can be a suction cup type stacking manipulator device in particular, and the plastic product is stacked by the suction cup type manipulator stacking device after the burrs are removed.
[0068] In an embodiment of the utility model, the plastic product forming and processing production line further comprises a control system 60, and the control system 60; the control system 60 comprises a temperature control module 600 and a centralized control module 610; wherein the temperature control module 600 is used for adjusting the working temperature of the equipment in each system, and the centralized control module 610 is used for linkage control of the equipment in each system, including but not limited to the feeding speed of the feeding system 10, the conveying speed of the hot pressing and flattening conveying device, the speed of the cross cutting machine, the mold conversion speed of the plastic suction machine, and the linkage control of the trimming machine and the stacking manipulator after demolding.
[0069] Specifically, the temperature control module 600 can utilize the PID feedback mechanism to realize accurate temperature adjustment based on the proportional control algorithm, integral control algorithm and differential control algorithm.
[0070] As a specific embodiment of the utility model, through the temperature control module 600, the temperature of each screw heating zone (260-280 DEG C), the temperature of each flow channel in the extrusion mold 200 (200-240 DEG C), the temperature of the flattening conveying device (180-220 DEG C) and the temperature of the plastic suction mold (pre-heating 180-200 DEG C before plastic suction, and cooling 40-60 DEG C after plastic suction) can be accurately controlled.
[0071] It can be understood that, without mutual contradiction, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples.
[0072] The plastic product forming and processing production line provided by the embodiment of the utility model, the raw material is conveyed to the sheet forming system 20 after being weighed by the feeding system 10, the sheet forming system 20 can form the raw material into a sheet, the sheet is conveyed to the product forming system 40 after being pressed and flattened by the flattening conveying system 30, the product forming system 40 is provided with a cutting station 400 and a plurality of plastic suction stations 410, the sheet is cut according to the product required specification on the cutting station 400, the cut sheet enters the plurality of plastic suction stations 410 respectively, each plastic suction station 410 can be independently operated, so that the sheets on different plastic suction stations 410 are simultaneously formed by plastic suction, compared with the blow molding and injection molding production line in the related art, the land occupation area of the equipment can be reduced while improving the production efficiency, and the production cost is reduced.
[0073] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.
Claims
1. A production line for the forming processing of plastic articles, characterized in that it comprises: The application relates to a plastic product forming system. The application comprises: a feeding system (10) for weighing and conveying raw materials; a sheet forming system (20) connected with the feeding system (10) for forming the weighed raw materials into sheets; a flattening conveying system (30) connected with the sheet forming system (20) for flattening and conveying the sheets; 2. The plastic article forming process production line according to claim 1, characterized in that, a product forming system (40) connected with the flattening conveying system (30), wherein the product forming system (40) is provided with a cutting station (400) and a plurality of plastic suction stations (410) for cutting and forming the sheets into plastic products.
3. The plastic article forming process production line according to claim 1, characterized by, The flattening conveying system (30) comprises a hot flattening conveying device. The sheet forming system (20) comprises: a screw extrusion module connected with the feeding system (10) for melting, mixing, reacting and extruding the weighed raw materials; 4. The plastic article forming process production line according to claim 3, characterized in that, an extrusion die (200) connected with the screw extrusion module for forming the melt extruded by the screw extrusion module into sheets.
5. The plastic article forming process production line according to claim 4, characterized in that, The screw extrusion module comprises an intermediate layer extrusion mechanism and a surface layer extrusion mechanism connected with the feeding system (10) respectively; the intermediate layer extrusion mechanism and the surface layer extrusion mechanism are connected with the extrusion die (200) through a melt distributor. The intermediate layer extrusion mechanism comprises a first screw extruder (210), a second screw extruder (211) and a foaming agent injection device; 6. The plastic article forming process production line according to claim 5, wherein, the first screw extruder (210) is connected with the feeding system (10), the inlet of the second screw extruder (211) is connected with the outlet of the first screw extruder (210), and the outlet is connected with the melt distributor; the second screw extruder (211) is provided with a foaming section, and the foaming agent injection device is connected with the foaming section.
7. The plastic article forming process line according to claim 6, wherein The surface layer extrusion mechanism comprises a third screw extruder (220), the inlet of the third screw extruder (220) is connected with the feeding system (10), and the outlet is connected with the melt distributor.
8. The plastic article forming process line according to any one of claims 1 to 7, characterized in that, The first screw extruder (210) adopts a double-screw extruder, the second screw extruder (211) adopts a single-screw extruder, and the third screw extruder (220) adopts a double-screw extruder.
9. The plastic article forming process production line according to claim 1, wherein, The application further comprises a control system (60) comprising a temperature control module (600) and a centralized control module (610); the temperature control module (600) is used for adjusting the working temperature of the devices in each system, and the centralized control module (610) is used for linkage control of the devices in each system.
10. The plastic article forming process production line according to claim 1, characterized by, The application further comprises a dehumidification drying system (50) arranged upstream of the feeding system (10); the dehumidification drying system (50) at least comprises an additive dehumidification drying module (500), a nucleating agent dehumidification drying module (510), a chain extender dehumidification drying module (520), a recycled material dehumidification drying module (530) and a new material dehumidification drying module (540). The product forming system (40) is further provided with an edge cutting station (420) located downstream of the plastic suction station (410) and a stacking station (430) located downstream of the edge cutting station (420).