320 results about "Plastic molding" patented technology

The invention relates to the technical field of molds, and discloses a plastic forming mold adhesion waste recycling device which comprises a supporting frame arranged in injection molding equipment. The supporting frame is rotationally connected with a rotating frame through a bearing seat arranged at the top of the supporting frame, four mold assemblies are arranged on the outer side of the rotating frame and are distributed in a circumferential array mode along the center of the rotating frame, and cleaning pieces used for cleaning waste materials are arranged in the mold assemblies. The recycling device for the waste adhered to the plastic forming mold can effectively solve the problems that in the prior art, when mold flashes are cleaned, parting surface flashes are usually manually cleaned through a manual scraper or a tool, the cleaning consumed time accounts for the high proportion of the production cycle, the equipment utilization rate is affected, the cleaning effect is affected by the skill level of operators, and the working efficiency is low. And the residual flash can cause the defects of product burrs, dimensional deviation and the like due to untight subsequent die assembly.

The invention belongs to the field of foamed plastic molding, and provides a foamed polymer preparation device which comprises a mold, a pipeline is connected to the mold, the pipeline is configured to introduce foamed particles, steam and a cooling medium into the mold and discharge gas / condensate water from the mold, and a valve is arranged in the pipeline; wherein the foaming particles are formed by pre-foaming a raw material containing a physical foaming agent; the temperature sensor is configured to measure the temperature of more than one position in the mold and / or the pipeline; the pressure sensor is configured to measure the pressure of more than one position in the mold and / or the pipeline; the image acquisition mechanism is configured to shoot the interior of the mold to judge the fusion state of the foaming particles; and the controller is configured to receive data of the temperature sensor, the pressure sensor and the image acquisition mechanism and generate an instruction for opening / closing the valve, and a calculation unit is further arranged in the controller. The invention also provides a corresponding preparation method of the foamed polymer. And the technological process can be controlled more accurately and automatically.

The invention relates to the technical field of plastic molding and treatment, and discloses a molding processing and post-treatment process of low-odor plastic, which comprises the following steps: extruding a plastic melt containing volatile components into a to-be-cut material strip, pelletizing in a pelletizing area by using a pelletizing device, and synchronously adjusting the pulse spraying frequency to adapt to the pelletizing frequency, an alternating stress field is induced on the surface layer of a material strip through periodic cold impact and mechanical vibration, a micro-crack structure is formed on the surface layer of plastic particles by controlling the particle size of atomized liquid drops, an exhaust channel for volatile component escape is constructed, and then the plastic particles are conveyed to post-treatment equipment for volatile component removal. A solid diffusion process blocked by a skin layer is converted into a physical inrush flow along a microcrack channel, so that a mass transfer energy barrier is reduced, efficient removal of peculiar smell components is realized, and thermal degradation and yellowing of particles are avoided.

The invention relates to injection molding shoe processing equipment and a processing method thereof, and belongs to the technical field of plastic molding.The injection molding shoe processing equipment comprises an injection molding system, a rack, a fixed mold system, a movable mold system, a robot demolding system and a finished product conveying system; the motion trail of the robot demolding system passes through the space between the fixed mold system and the movable mold system, the movable mold system and the injection molding system are both installed on the rack in a sliding mode, the fixed mold system is installed on the rack, the finished product conveying system is installed on the rack, and a bending adsorption device is installed at the output end of the robot demolding system. The bending adsorption device has a bending state and a straight state, and the bending adsorption device extends between the fixed mold system and the movable mold system, so that demolding can be performed smoothly.

The invention discloses a hot runner mold, relates to the technical field of plastic forming molds, and solves the technical problems that a mold core of a traditional hot runner mold is mostly rigidly connected with a mold frame through a bolt and is not easy to replace, mother liquor is easy to remain on the inner wall of a hot runner, a large amount of machine washing materials are needed for washing when materials or colors are replaced, the demolding precision is low, and workpieces are easy to damage. A movable mold assembly is arranged on the right side of the fixed mold assembly, and mold core fixing mechanisms are arranged on the inner side of the fixed mold assembly and the inner side of the movable mold assembly. Through cooperative work of the mechanisms, a mold core fixing structure, a hot runner cleaning mechanism and demolding linkage are optimized, the mold is convenient to disassemble and assemble, and a mold core can be rapidly replaced to adapt to multi-specification production; the hot runner system is uniform in heating, clean, efficient and capable of rapidly switching materials or colors; the demolding is automatic and accurate, and the efficiency is improved; wire harness management is standard, and operation is stable; the structure is stable, the forming quality is guaranteed, the overall cost is reduced, efficient injection molding and demolding circulation are achieved, and the production efficiency is improved.

An injection molding apparatus for producing a plastics molding comprising a first component, a second component, and a third component comprises a first mold plate having at least 3 first mold nests, and a second mold plate having at least 3 second mold nests. In the closed state, the mold plates cooperate in the production of the plastics mold. In the opened state, the second mold plate is rotatable relative to the first mold plate. The at least 3 second mold nests comprise, in a case A), at least two second mold nests for injection molding the first component, and at least one second mold nest for injection molding the third component, or, in a case B), at least two second mold nests for injection molding the second component, and at least one second mold nest for injection molding the first component.

The invention discloses temperature control type injection molding equipment and method for thin-wall plastic parts, and relates to the technical field of plastic molding device.The temperature control type injection molding equipment comprises an injection molding mechanism, a movable mold mechanism is installed on the top of the injection molding mechanism, and an inflation assembly, an ejection assembly and a plugging assembly are installed on the front side of the movable mold mechanism from inside to outside; the movable mold mechanism comprises a movable mold, and a forming cavity is formed in the rear side of the movable mold. The device is reasonable in structural design, the thin-wall plastic part is flexibly extruded to shake through the airflow impact effect, then the thin-wall plastic part is ejected out through a traditional ejector pin, opening and closing of airflow and a path are automatically completed through a specially-designed plugging assembly, it is guaranteed that the airflow is smooth in the demolding process, and the integrity of a forming cavity in the injection molding process is also guaranteed; the whole process can be automatically completed without redundant driving parts, the problem that thin-wall plastic parts are prone to damage in the ejection and demolding process is solved, and the market competitiveness of products is improved.

The invention relates to the field of plastic forming, in particular to a centralized feeding and gas supply collaborative plastic forming system which comprises a hopper, a drying machine, a weighing machine and an extruding machine which are sequentially connected in a sealed mode. The air supply pipeline is respectively connected with the hopper and the stirrer so as to introduce high-pressure hot airflow; the stirrer is connected with the material returning and feeding pipeline and the material conveying pipeline, the material returning and feeding pipeline is connected with the weighing device through the vacuum pump, and the material conveying pipeline is connected with the hopper and used for circulating the plastic raw materials supplied in a centralized mode; and the central controller is used for carrying out material supply and gas supply cooperative control on the extruder through an SAC reinforcement learning model so as to control the drying quality of a plastic molding product and the material returning amount of the material returning and feeding pipeline. According to the invention, material supply and gas supply in the hopper, the drying machine and the weighing machine are cooperatively blended, so that the material supply quality of the extruder is ensured, and the reliable quality of a plastic molded product is ensured.

The invention relates to the technical field of plastic molding processes, and discloses a negative pressure injection molding plastic molding method and device. The method comprises the steps that in the negative pressure injection molding process, gas parameter data of a plurality of monitoring points in a mold cavity are obtained in real time; based on the change of the gas parameter data of each monitoring point, identifying the state of the gas pushed by the melt, and determining the propulsion path of the melt flowing front edge in the cavity; according to the propelling path, the melt filling progress and the filling time sequence of all areas in the cavity are calculated; and based on the filling progress and the filling time sequence, generating evaluation information of the filling state of the melt in the cavity. According to the method, the real-time visual prediction of the melt filling process in the mold is realized, and the control accuracy of the negative pressure injection molding process and the stability of the product quality are improved.

The invention relates to the technical field of plastic molding, in particular to a plastic pad extrusion molding cooling device which comprises a vertical frame, a fixed cylinder, a roller, a spiral sleeve and a detection assembly. The roller is divided into a plurality of cooling cavities for independently supplying water, water is supplied to the cooling cavities at the same time, the problem of uneven cooling caused by water flowing is solved, the spiral sleeve forcibly cools water to form turbulent flow, and compared with smooth laminar heat exchange, the cooling efficiency is improved, and the service life of the roller is prolonged. Then, the cooling temperature is detected in real time by means of the detection assembly, external supplementary cooling is conducted according to the situation, and therefore the mode that water is independently supplied to the multiple cooling cavities for turbulent cooling and matched with external supplementary cooling is formed, and the uniform cooling degree of the plastic pad is comprehensively improved; and the quality problems of buckling deformation, sinking, shrinkage and the like of the plastic pad caused by non-uniform cooling are avoided.

The invention relates to the technical field of plastic forming, and discloses a plastic leftover material forming process of a layered compaction structure, which comprises the following steps: S1, raw material pretreatment: selecting a new plastic material meeting performance requirements, drying, mixing with pretreated recycled material particles in proportion, uniformly stirring, and feeding into a raw material storage tank for later use; s2, melting and injection molding: feeding the mixed raw materials into an injection molding machine, heating in different areas through a charging barrel, and stirring and melting into a melt through a screw rod; the die set is arranged, through an immediate leftover material separation and recovery system, the cut leftover materials can be rapidly recycled, soil and water pollution caused by leftover material accumulation is avoided, meanwhile, waste of plastic raw materials is reduced, and the development concepts of green manufacturing and circular economy are met. Due to the sealing protection design of the die set, pollution caused by melt leakage is avoided, and diffusion of dust and harmful gas is reduced through the sealing structure of the movable groove.

This utility model discloses a polypropylene extrusion molding device, relating to the field of plastic molding technology. The polypropylene extrusion molding device includes a polypropylene extrusion unit with a feed inlet. A first motor is fixedly connected to one end of the polypropylene extrusion unit, and a support frame is fixedly connected to the bottom of the polypropylene extrusion unit. When it is necessary to change to a different specification mold, the current to the magnetic conductor coil is cut off, causing the magnetic conductor to lose its magnetism and the magnetic attraction between it and the permanent magnet inside the mold to dissipate. At this time, the old mold can be directly removed. After replacing it with a new specification mold, the new mold is placed against the sealing plate and aligned with the extrusion hole. The magnetic conductor coil is then energized, causing it to regain its magnetism and re-establish magnetic attraction with the permanent magnet inside the new mold. The entire process requires no additional mechanical fixing structure; mold replacement can be quickly completed simply by switching the current on and off, significantly improving the device's adaptability to different product specifications.

This invention relates to the field of plastic molding and processing technology. The objective is to provide an injection molding mold for an automotive seat backrest, comprising a mold body consisting of a male mold and a female mold. A recessed air-cushion mounting cavity is provided on the surface of the male mold opposite to the plastic part molding area. The air-cushion mounting cavity communicates with a drive cavity located on the back of the male mold. A retractable air-cushion device is provided within the air-cushion mounting cavity. The retractable air-cushion device includes an ejector rod, a retractable sleeve sleeved outside the ejector rod, an inflation and pressurization mechanism, and an air-cushion driving mechanism. Driven by the air-cushion driving mechanism, the retractable air-cushion device can switch between injection molding state, mold opening and locking state, and air-cushion state. Compared with existing methods, this invention results in a lower plastic part deformation rate and better positioning, leading to a higher overall product yield.

The invention discloses multifunctional multi-layer co-extrusion equipment, and belongs to the technical field of plastic molding extrusion. Comprising a multi-layer co-extrusion die head and a plurality of sets of modular extruders, a transparent master batch feeding barrel is assembled on each set of modular extruder, and conveying barrels, used for melting materials, on the modular extruders are all connected to the input end of the multi-layer co-extrusion die head for multi-layer co-extrusion; the side, close to the multi-layer co-extrusion die head, of a conveying cylinder of each set of modular extruder is cut off, a lifting type switching module is arranged at the cut-off end, a transparent particle plastic mixing unit and a color master batch plastic mixing unit are integrated on the lifting type switching module, and the transparent particle plastic mixing unit and the color master batch plastic mixing unit are integrated through a switching mechanism of the lifting type switching module. The quick color changing function of the multi-layer co-extrusion equipment in small-batch customized production is realized, and the problems of low efficiency and raw material waste caused by global shutdown for cleaning a screw rod and a machine barrel during color changing due to a fixed runner structure of the existing traditional equipment can be effectively solved.

This invention relates to the field of plastic molding, and more particularly to a composite material molding die for a target aircraft fuselage. The die includes a mold base, with a lower wing mold fixedly mounted on one side of the upper end of the mold base. An upper wing mold is positioned above the lower wing mold. A servo push cylinder is fixedly mounted on the rear of the other side of the upper end of the mold base. A connecting frame is fixedly mounted on the output end of the servo push cylinder. A carrier sleeve is fixedly mounted on the end of the connecting frame. Two shell prisms are symmetrically slidably mounted inside the carrier sleeve, extending from the upper and lower ends of the carrier sleeve respectively. Arc-shaped shells are fixedly mounted on opposite ends of the two shell prisms. Arc-shaped wiping cloths are provided on opposite surfaces of the two arc-shaped shells. A return spring is provided between the opposite ends of the two shell prisms and the carrier sleeve. This invention reduces the labor intensity of workers, facilitates use, reduces dead angles for mold release agent wiping, and ensures effective demolding after molding.

The invention discloses a foam packaging box production device, and belongs to the technical field of foam plastic molding equipment, the foam packaging box production device comprises a support, and the support is provided with a foaming box and a transfer bin; the foaming box is horizontally and rotatably inserted into the side wall of the transfer bin, and the end, close to the transfer bin, of the foaming box is open; a mounting frame is horizontally and rotatably mounted in the foaming box, a first motor used for driving the mounting frame to rotate is arranged on the side wall of the side, away from the transfer bin, of the foaming box, and a filter screen is fixedly mounted on the mounting frame and used for screening foamed foam and unfoamed plastic particles; two threaded rods are horizontally, symmetrically and rotationally mounted on the inner side wall of the foaming box; according to the scheme, under the cooperation of the filter screen, the control mechanism and the push plate, foams which do not meet the size requirement can be removed, it is guaranteed that all foams entering the transfer bin are the foams with the qualified size, the probability of caking is reduced in the subsequent machining process, and the effect of improving the product quality is achieved.

The utility model discloses an air drying device for plastic forming on a plastic production line, and relates to the technical field of plastic processing. Comprising a base; the bottom of the air drying box is fixedly connected with the top of the base, and the inner wall of the air drying box is fixedly connected with a rotating device and an air drying device; the rotating device comprises a first motor, the bottom of the first motor is fixedly connected with the inner wall of the air drying box, an output shaft of the first motor is fixedly connected with a supporting frame, the outer wall of the supporting frame is fixedly connected with a second motor, an output shaft of the second motor is fixedly connected with a gear, and fixing blocks are symmetrically arranged on the two sides of the gear. The rotating device can enable the plastic forming part to be subjected to air drying treatment in all directions, meanwhile, the plastic forming part can be rapidly fixed through cooperation with the structure of the gear and the fixing block, and hot air can evenly act on all corners of plastic in the rotating process.

A method for at least partially automatic determination of at least one production process variable for manufacturing a predetermined target plastic molded part by an injection molding machine. The apparatus includes production devices having a plastic supply device for supplying the plastic to be processed as raw material, a plasticizing device for plasticizing and / or homogenizing the plastic to be processed, an injection device for injecting the plasticized and / or homogenized plastic into at least one molding device, and / or the at least one molding device for molding the injected plastic into a plastic molded part, wherein the apparatus and / or the production devices can be adjusted according to predetermined and / or predeterminable production process variables which are characteristic of the production process of the plastic products to be manufactured.

The invention relates to a column-free multi-cylinder C-shaped injection molding machine, belongs to the field of plastic molding equipment, and aims to solve the problems that an upper template of a cantilever of an existing C-shaped column-free injection molding machine is easy to droop and deform, and the service life and the safety of a hydraulic cylinder are influenced. The machine frame is provided with a horizontal part and a vertical part, the back face of the upper die plate is connected with the vertical part of the machine frame in a sliding mode through a sliding rail, and a C-shaped structure without a guide column is jointly formed. The lifting mechanism comprises two groups of auxiliary cylinders and pressure cylinders respectively positioned on two sides of the injection mechanism, auxiliary cylinder bodies are fixed on the front surfaces of pressure cylinder bodies, and driving ends of the auxiliary cylinders and the pressure cylinders are respectively connected with different positions of the top of the upper template to form a collaborative layout for resisting cantilever bending moment; the driving end of the pressure cylinder is connected with the upper die plate through an elastic piece, and the driving end of the auxiliary cylinder is connected with the upper die plate through a hinge so as to compensate deformation and protect the oil cylinder. According to the invention, a system solution is provided from structural design, deformation compensation to safe locking, and the rigidity, precision reliability and service life of the C-type column-free injection molding machine are remarkably improved.

The invention relates to the technical field of plastic forming and processing, and discloses a preparation device and method of a high-barrier co-extrusion film. The preparation device of the high-barrier co-extrusion film comprises a vertical frame, a film blowing mechanism, an air cooling mechanism and a film pressing mechanism, the film blowing mechanism, the air cooling mechanism and the film pressing mechanism are sequentially arranged in the height direction of the vertical frame, and the film pressing mechanism comprises a preliminary extrusion body used for preliminarily collecting a cylindrical film and a pressing assembly located above the preliminary extrusion body and used for pressing the collected film into a sheet shape; and the film drawing assembly is used for assisting in guiding the film. The film drawing mechanism designed by the invention not only has the capability of drawing a film, but also can be used as an auxiliary lifting structure to replace manual drawing during film guiding operation, so that cooperative operation of multiple persons is not needed, the operation difficulty of drawing the film for the first time is reduced, and the operation efficiency is improved; besides, when the film drawing mechanism guides the film, a small-amplitude left-right transverse moving and swinging mode is adopted, so that the film is stressed more uniformly when being stretched, and is not easy to break, and the preparation quality of the film is further guaranteed.

The invention relates to the technical field of injection molding, in particular to a PIN-embedded injection molding device with multiple sliding blocks for preventing an oil cylinder from retreating, comprising: a fixed mold, the lower end of the fixed mold is attached to a movable mold, and the left and right end surfaces of the fixed mold are both recessed inwards to form two mounting grooves; the two female mold cores are symmetrically embedded in the lower end of the fixed mold; the two male mold cores are symmetrically embedded in the upper end of the movable mold; the left end and the right end of the male mold core are connected with the pushing pieces in a sliding manner; the four second oil cylinders are respectively mounted in the four mounting grooves; the four first shifting blocks are installed at the lower ends of the movable parts of the four second oil cylinders correspondingly, and the cross section of each first shifting block is in a trapezoid shape with the lower portion narrower than the upper portion; by means of the design, the sliding block is prevented from retreating, the probability that the sliding block retreats due to injection molding pressure factors formed during plastic molding is effectively reduced, the probability that defective injection molding products occur is effectively reduced, and the injection molding effect and quality are effectively guaranteed.

1. The name of this design product: Fully automatic foam molding machine (Z-axis rotation). 2. Purpose of the product of this design: Equipment for manufacturing foam plastic molding materials. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture. 5. For parts of the product designed that are difficult to see or cannot be seen during use, the bottom view is omitted.

The utility model relates to the technical field of foamed plastic forming molds, and discloses an EPS (Expandable Polystyrene) foamed plastic forming mold, which solves the problems that plastics formed by the existing EPS foamed plastic forming mold are inconvenient to take out quickly, and the processing efficiency of the mold is influenced. When the pressing plate moves to drive the supporting rods to move into the moving frame and the lower ends of the supporting rods make contact with the inclined faces of the trapezoid blocks, the trapezoid blocks move into the clamping grooves under the cooperation of the springs, the trapezoid blocks are pressed, and the trapezoid blocks are clamped in the clamping grooves. The pressing plate moves upwards, at the moment, the supporting rod drives the moving frame to move, the moving frame drives the material lifting plate to move, the material lifting plate pushes the mold to move upwards, the mold moves to the outside of the mold, automatic discharging is achieved, and compared with manual taking-out, time is saved, and the use efficiency of the mold is improved.

The invention discloses a high-precision demolding force detection injection molding machine, which belongs to the technical field of plastic molding performance detection, and comprises a base, a fixed mold seat, a movable mold seat, a movable mold driving device, an ejection component, an injection molding device and a control device, a first mold is mounted on the fixed mold base, and a second mold is mounted on the movable mold base; a locking piece and a fine-tuning execution piece are arranged between the first / second die and the mounting seat, and the output end of the fine-tuning execution piece is rigidly connected with the mounting surface of the first / second die and provides displacement adjustment along at least two mutually orthogonal directions; displacement sensors are arranged on the peripheries of the first / second dies; the second mold and the first mold are closed through the movable mold driving device to form an injection molding cavity, and a piezoresistive sensor is arranged on the inner wall of the injection molding cavity. According to the device, high-precision repeated positioning of the mold, constant-speed control in the ejection process, synchronous acquisition of multi-point force in the cavity and strict consistency of external conditions of two tests are realized, so that the demolding force difference of plastics with different additives on the same base material is accurately compared.

The invention relates to the technical field of material pretreatment, in particular to re-plastic molding material pretreatment equipment which comprises a rotary cleaning barrel, the rotary cleaning barrel is rotationally arranged at the feeding end of a feeding pipe and the discharging end of a discharging device and wraps the discharging end of the feeding pipe and the feeding end of the discharging device, and a vibration device is arranged on the circumferential inner wall of the cleaning barrel; a vibration extrusion device arranged on the feeding pipe is arranged in the cleaning barrel, the rotary cleaning barrel rotates to drive the vibration device to drive the vibration extrusion device to extrude and vibrate, the vibration extrusion device has magnetism, and the discharging device scrapes off and collects materials on the vibration device. In the rotating process of the rotary cleaning cylinder, the vibration device and the vibration extrusion device are driven to cooperate with each other to vibrate and extrude the material from the feeding pipe, so that impurities attached to the surface of the material fall off, and the impurities in the material are further removed in cooperation with the cleaning liquid in the rotary cleaning cylinder; and meanwhile, the discharging device scrapes off and discharges the treated materials adsorbed on the vibration device.

The utility model relates to the field of plastic workpiece processing, in particular to a plastic forming die which comprises a forming box and a mounting plate, a plurality of vent grooves are formed in the bottom of the forming box, two cylinders are fixedly connected onto the mounting plate, moving ends of the two cylinders are fixedly connected with a cutter, the cutter is a rectangular frame, and the vent grooves are formed in the mounting plate. Two nozzles are fixedly connected to the cutter, an air exhaust box is fixedly connected to the lower end of the forming box, an air pipe is fixedly connected to the lower end of the air exhaust box, a bearing plate is fixedly connected to the bottom of the forming box, a cutter is rotationally connected to the bearing plate, and waste on the edge of a formed plastic workpiece can be automatically cut.

The invention provides a blank molding assembly block of diamond large single crystals and a plastic growth method, and belongs to the technical field of superhard material synthesis. The blank molding assembly block comprises a mutually-embedded metal catalyst layer formed by mutually embedding a plurality of prismatic table metal catalyst structures, the whole mutually-embedded metal catalyst layer is in a prismatic table shape, one of the upper end face and the lower end face of each prismatic table metal catalyst structure is in contact with the high-purity graphite carbon source layer, and the other one of the upper end face and the lower end face of each prismatic table metal catalyst structure is in contact with the seed crystal; the adjacent prismatic table metal catalyst structures are separated by an insulating layer, and the insulating layer is a Ca coating or a BN coating. A mutually-embedded prismatic-table-shaped metal catalyst structure with an axial temperature gradient and a carbon diffusion channel is constructed in a blank assembly block, diamond is induced to grow in a preset direction in an HPHT environment, directional shaping growth of the diamond is achieved under the condition that the process complexity is not improved, and the quality of the diamond is improved. The crystal morphology controllability, the catalytic agent utilization efficiency and the final drilling rate are remarkably improved, and the single-cavity yield is increased.

The invention discloses biomass-based water-solid plastic as well as a preparation method, a water-solid forming method and application thereof, and belongs to the field of plastics, the water-solid plastic is plastic which can be subjected to self-deformation forming only by using water without using a mold, and the obtained shape can be kept stable and is not influenced by water environment and humidity change. The water-solid forming method mainly comprises the following steps: pre-designing the shape of the biomass-based water-solid plastic, performing water treatment, and performing drying treatment after deformation. The water-curable plastic can be automatically deformed into various one-dimensional, two-dimensional or three-dimensional shapes, no mold is needed, expensive and complex instruments and equipment are not needed, and the method is a plastic forming processing method which is simple to operate, low in energy consumption, low in cost, green, environment-friendly and carbon-reducing. The biomass-based water-solid plastic is prepared from biomass which is rich in reserves, low in cost, sustainable to regenerate, biodegradable and good in biocompatibility, has good mechanical properties and can be widely applied to various fields.

The utility model discloses a mixing device for plastic product production, which comprises a feeding frame, a spiral feeding barrel, a mixing barrel and a control switch, wherein two feeding hoppers are fixed on the feeding frame; a first spiral discharging groove and a second spiral discharging groove are formed in the feeding barrel; the two feed hoppers are respectively communicated with the first spiral blanking groove and the second spiral blanking groove through pipelines; the feeding frame is fixed on the mixing barrel through the spiral feeding barrel; the control switch is arranged on one side of the mixing barrel; a stirring frame and a driving motor are arranged in the mixing barrel, the control switch controls the driving motor to start and stop, and the driving motor drives the stirring frame to rotate; a tank body discharge hole is formed in the lower part of the mixing barrel and is communicated with a feed hole of plastic forming equipment; during use, the stirring frame is started firstly, and plastic particles contained in the two feeding hoppers spirally enter the mixing barrel to be stirred; the stirring frame is directly mounted in front of plastic forming equipment, and can realize feeding while mixing.