327 results about "Plastic injection molding" patented technology

A vehicular glass window panel assembly includes a glass panel having an inner side and an outer side, and a handle and catch element adhesively bonded along a first perimeter region of the inner side. The handle and catch element includes a handle portion and a catch configured for engaging a latching element of a vehicle when the window panel assembly is mounted at the vehicle to close over an aperture of the vehicle. The handle and catch element is formed as a single component via a plastic injection molding process. With the latching element engaged with the catch, the window panel assembly is secured at the vehicle. With the latching element disengaged from the catch, the window panel assembly is removable from the vehicle. With the window panel assembly removed from the vehicle, the handle portion is graspable by a user to carry the window panel assembly.

The invention relates to the technical field of recycled plastic injection molding, and discloses an injection mold based on a plastic recycled particle uniform plasticizing structure, the injection mold comprises a molding part, the molding part comprises a fixed mold, and one side of the fixed mold is slidably connected with a movable mold. The injection mold based on the uniform plasticizing structure of the plastic recycled particles can effectively solve the problems that in the prior art, the main purpose of a spiral conveyor is conveying, the recycled plastic particles are conveyed forwards and plasticized step by step under rotation pushing of a screw, but the recycled plastic particles are complex in source and difficult to plasticize. The material, the shape, the contained additives and the like of the recycled plastic particles are greatly different, the recycled plastic particles with different characteristics are difficult to be fully and uniformly mixed when entering a mold only through screw conveying and preliminary plasticizing, the interiors of products are easy to have nonuniform components and performances, and the strength of some parts of the products is insufficient. The invention solves the problems of high probability of breakage when bearing external force, poor overall quality, low production efficiency and low product percent of pass.

The invention relates to the technical field of plastic processing, in particular to an injection device of a plastic injection molding machine. The injection mold comprises a movable mold body and a fixed mold body, a cavity is formed between the movable mold body and the fixed mold body after mold closing, two air outlet grooves are symmetrically formed in the fixed mold body, and air outlet holes communicating with the forming cavity are formed in the inner walls of the two air outlet grooves; and the injection molding assembly comprises an injection barrel, a stirring cavity is formed in the injection barrel, a stirring shaft rod is arranged in the stirring cavity, and a plurality of electric heating rings are fixedly installed on the outer wall of the injection barrel. After a threaded section of a rotating short shaft is completely meshed with a meshing square sleeve, the moving meshing square sleeve compresses and pushes the rotating short shaft, a telescopic frame, an ejector rod, a plug and the ejector rod to move together, the ejector rod is in sliding connection with the inner wall of an air outlet hole, plastic blocked at the air outlet hole is ejected away, and the air outlet hole is sealed. Therefore, air in the forming cavity can effectively circulate outwards.

The invention discloses an injection molding machine for a fender of a cab, and belongs to the technical field of plastic injection molding, the injection molding machine comprises a workbench, a support is fixedly mounted on the top wall of the workbench, a lower mold is fixedly mounted on the top wall of the workbench, and an electric push rod is fixedly mounted on the support; an upper mold is fixedly mounted at the output end of the electric push rod, and an exhaust assembly is arranged on the upper mold; the exhaust assembly comprises a pressure relief opening formed in the upper mold. According to the scheme, the pressure relief opening is formed, after raw materials enter the mold cavity, residual airflow in the mold cavity flows to the outside through the pressure relief opening, and after the mold cavity is filled with the raw materials, the buoyancy plate can drive the sealing plate to block the pressure relief opening, so that the situation that bubbles are formed on the surface of a formed part due to unsmooth exhaust is avoided; and the injection molding block can block the injection molding pipe, so that the injection molding pipe is prevented from being adhered with raw materials in the mold cavity to influence the product quality, and the effect of improving the product quality is achieved.

The invention relates to the technical field of plastic injection molding, in particular to a multi-point glue feeding method for a thick-wall light-emitting body of an automobile tail lamp and an injection molding mold, and the method comprises the steps that product parameters are obtained in response to a detection signal, and a correlation coefficient, a guide angle and a reference track are determined according to the product parameters; injecting the magnetic ball and the detection liquid from a pouring gate position at a guide angle based on a track control method, and collecting a moving track; when the moving track does not coincide with the reference track, an adjusting coefficient is determined according to the moving track and the reference track, and the guide angle is corrected; when the moving track coincides with the reference track, defining the guide angle as a target angle; the injection molding angle is determined according to the target angle and the correlation coefficient, molten plastic is injected from the sprue position, and then a connection image of the product is collected; and the injection molding angle is corrected according to the existence condition of the cross color feature in the connection image. The device has the effect of avoiding color crossing of two materials in a product.

The unmanned aerial vehicle comprises the vehicle arm structure, the vehicle arm structure comprises a carbon tube, a hardware sleeve die piece, a first injection molding piece and a second injection molding piece, the carbon tube is combined with the hardware sleeve die piece and the injection molding piece, and the characteristics of light weight and high strength of the carbon tube are utilized; due to the connection stability and the machining flexibility of the hardware sleeve die piece and the injection molding piece, the overall strength and the stability of the arm structure are improved; compared with a pure plastic injection molding process, the requirements for structural design and a mold are relatively low, and the method is suitable for an arm with a certain length; compared with a pure hardware machining process, the cost is lower, and the machining efficiency is higher; and compared with a gluing process, the connection is more stable, and the risk is smaller.

The utility model discloses an automobile plastic part injection molding excess material cutting device which comprises a supporting base, a transverse moving assembly is arranged at the upper end of the supporting base, a radian adjusting assembly is installed on the right side of the transverse moving assembly, a cutting assembly is arranged on the right side of the radian adjusting assembly, and the radian adjusting assembly comprises a supporting shell. Lifting guide columns are fixedly installed on the two sides in the supporting shell, second guide blocks are movably installed on the outer sides of the lifting guide columns, a lifting base is arranged on the right side of the supporting shell, the lower end of the lifting base is fixed to the second guide blocks through bolts, a hydraulic cylinder is installed in the supporting shell, and a hydraulic rod is arranged at the upper end of the hydraulic cylinder. The upper end of the hydraulic rod is connected with the lifting base. In actual use, the radian adjusting assembly ensures the stability and accuracy of the hydraulic cylinder and the hydraulic rod in the lifting process through stable clamping of the lifting guide column and the second guide block on the two sides, shaking and deviation are effectively avoided, and the risk that a plastic part is scratched due to inaccurate positioning is reduced.

The invention discloses a multifunctional earphone storage box and a dual-mode audio system, and belongs to the technical field of intelligent software and hardware equipment.The multifunctional earphone storage box comprises a device product, an array microphone, a built-in banded loudspeaker, an earphone cabin cover, a TWS wireless Bluetooth earphone, a Type-c usb charging port, a liquid crystal display panel and a multifunctional button. According to the mobile phone, the text conversion and translation service is supported, the translated and translated text content can be edited and modified, a user can conveniently manage and utilize recording data, the mobile phone APP supports voiceprint information management, a speaker can be created, modified and deleted, and the mobile phone APP is convenient to use, high in practicability and high in practicability. And meanwhile, a large model conference summary capability is requested from a server, summary summarization and to-be-processed extraction are realized, conference efficiency is improved, the system can be used as a mobile phone loudspeaker and an external microphone after Bluetooth audio connection, and the system is suitable for a remote conference scene and is not limited by third-party conference software or a teleconference.

The invention discloses a particle injection molding machine for plastic recycling, and belongs to the technical field of plastic injection molding machines, the particle injection molding machine for plastic recycling comprises an injection molding machine body, the injection molding machine body comprises a conveying pipe, a feeding port, a spiral conveying roller, a right mold, an electric push rod, a sliding plate, a limiting rod, a left mold, a discharging port and a mixing mechanism arranged on the outer wall of the feeding port; a conveying pipe is fixedly connected to the outer wall of the injection molding machine body, a feeding opening is formed in the outer wall of the conveying pipe, and by arranging a heating box, when plastic raw materials are produced and processed through a control box, the heating and mixing effects of plastic in the control box are improved, and the efficient injection molding effect of the plastic in the injection molding machine is improved; the electric heating wire can be turned on, and the electric fan is turned on, so that heat generated by the electric heating wire is conveyed into the control box from the second air supply outlet, and the effect of fully preheating the raw materials stirred in the control box is achieved.

The invention relates to the technical field of product detection, in particular to a plastic mold production quality detection method and system. The method comprises the following steps: acquiring in-mold pressure data of each cavity of the multi-cavity mold in a plastic injection molding process and mold wall temperature data of a cooling stage; determining a pressure rise acceleration curve based on the in-mold pressure data of each cavity; based on the pressure rising acceleration curve and a preset fluctuation threshold value, a filling fluctuation index of the melt filling stage is determined; based on the mold wall temperature data, a cooling hot spot index of a cooling stage is determined; and comparing the filling fluctuation index with a filling fluctuation threshold value, and comparing the cooling hot spot index with a cooling hot spot threshold value to obtain a detection result of the production quality of the plastic mold. The objective of the invention is to solve the problem of early cracking, deformation or structural failure of a product caused by difficulty in accurately detecting the product produced by a plastic mold in the prior art.

The invention relates to a rotor arrangement (1), in particular for an electric machine (2) within a drive train (3) of a motor vehicle (4), comprising a rotor (5) with a cylindrical ring-like rotor body (6) and a rotor shaft (7) connected to the rotor body (6) in a torque-transmitting manner, wherein the rotor shaft (7) is designed in two parts, with a first rotor shaft part (8) and a second rotor shaft part (9), which are arranged axially spaced from one another and the first rotor shaft part (8) is connected to the rotor body (6) in a material-to-material manner by means of a plastic (10), in particular an injection-molded plastic, and the second rotor shaft part (9) is connected to the rotor body (6) in a material-to-material manner by means of a plastic (11), in particular an injection-molded plastic.

The utility model discloses a waterproof structure of a power inlet end, and particularly relates to the technical field of automobile power distribution unit waterproofing, which comprises a waterproof plastic shell, a power inlet stud is arranged in the waterproof plastic shell, and a conductive bus bar is further arranged in the waterproof plastic shell. A plugging stress part is formed at the joint of the conductive bus bar and the waterproof plastic shell, a U-shaped area is arranged on the surface of the conductive bus bar, and the U-shaped area is arranged in a U-shaped power input mode. According to the utility model, the conductive bus bar is designed to be U-shaped, and the injection molding bonding stroke of the conductive bus bar and plastic is increased, so that the range of a plugging stress part is effectively reduced to the whole stroke of an electricity inlet port and the U-shaped bus bar, the stress caused by vibration or plugging is avoided, and the stress possibility after injection molding of plastic and metal is effectively avoided; and the high-speed increase of the cost is avoided.

The application relates to the technical field of injection molding equipment, in particular to a double-station rapid mold changing plastic injection molding machine, which comprises an injection molding assembly, a workbench and a bearing assembly, the bearing assembly comprises a limiting frame, a lower mold, a connecting piece and a connecting block, a one-key synchronous locking structure composed of a worm wheel, a worm, a double-side screw rod and an insertion block is arranged, synchronous fixing and loosening of the left and right lower molds can be realized by only rotating a handle, repeated disassembly and assembly of bolts are not needed, mold changing steps are greatly simplified, mold changing time is shortened, double-station rapid switching requirements are met, and production efficiency is remarkably improved; the limiting frame and the connecting block are inserted and positioned, the insertion block is transversely locked, mold automatic centering is realized, installation deviation and misplacement are effectively avoided, mold closing precision is improved, product flash, burrs, size deviation and other problems are reduced, and molding quality and the finished product rate are improved; the worm wheel and worm structure has a self-locking function, cannot be loosened after being locked, is uniformly stressed, is high in reliability, and improves equipment operation stability and use safety.

The utility model discloses a plastic injection molding machine which comprises an injection molding machine main body, a dyeing mechanism, a conveying mechanism and a controller, the mass sensor can automatically detect the mass of the transparent plastic particles in the cylinder body, the corresponding storage cylinder is automatically opened according to the color ratio, then the stirring piece is started in good time, automatic dyeing of the plastic particles is achieved, the trouble that an injection molding machine needs to dye the plastic particles manually is avoided, and the injection molding efficiency is effectively improved. The discharge part is mounted at the bottom end of the barrel, the conveying mechanism is arranged on one side of the barrel, the discharge part is aligned to the conveying mechanism, and the conveying mechanism is communicated with the injection molding machine main body. And the conveying mechanism can directly feed the plastic particles into the injection molding machine main body, so that the trouble of manually carrying the plastic particles is avoided, and the practical performance is further improved.

The invention relates to the technical field of plastic molding machines, and discloses a plastic injection molding machine with a cooling mechanism, the plastic injection molding machine comprises a base, the top of the base is fixedly provided with a melting box and an injection machine, and one side of the base is provided with a discharging plate; the cooling device is located on one side of the base, the cooling device comprises a cooling box arranged on one side of the base, a plurality of connecting plates are fixed between the cooling box and the base, the outer wall of the cooling box is connected with a water injection pipe and a water drainage pipe, and a heat conduction pipe is arranged in the base; the cooling device adopts a reasonable design, a cooling box conveys cooling liquid to a heat conduction pipe through a circulating pump, through mutual cooperation of a water suction pump, a control valve, a one-way valve, a valve body and an opening and closing valve, after cooling operation is completed, cooling water in the heat conduction pipe can be pumped out through the water suction pump, cooling water residues are avoided, and the cooling efficiency is improved. And the die can smoothly carry out next cycle operation, the service life of the die is prolonged, and the operation efficiency of the die is improved.

The invention relates to the technical field of recycled plastic injection molding equipment, and discloses an injection mold based on a plastic recycling proportion optimization filling structure, the injection mold comprises an operation box, the interior of the operation box is fixedly connected with a fixed mold plate, the fixed mold plate is slidably connected with a movable mold plate through a guide rod arranged on one side of the fixed mold plate, and the injection mold is used for injection molding. The injection mold for optimizing the filling structure based on the plastic recovery ratio can effectively solve the problems that in the prior art, recovered plastic materials are complex in component, come from different products in different fields and are different in melting point, water content, material quality and the like, traditional conveying equipment is difficult to sufficiently and uniformly stir different types of plastics, and the production efficiency is high. The problems that in the prior art, in order to guarantee the quality of produced and processed injection molding finished products, a large number of new plastic particles need to be added when recycled plastic is subjected to injection molding, so that the overall proportion of the recycled plastic is low, the production cost is high, and resource recycling is not facilitated are solved.

The invention discloses integrated injection molding equipment for plastic parts, relates to the technical field of injection molding equipment, and solves the problem that the quality of products after injection molding is affected due to the fact that the uniformity of plastic particle conveying and discharging is difficult to control. The integrated injection molding equipment for the plastic parts comprises an equipment base, the integrated plastic injection molding extrusion mechanism is mounted on one side of the top of the equipment base through screws; the plastic injection mold is mounted on the other side of the top of the equipment base through a screw; the control terminal is mounted at the top of the equipment base through a bracket and is positioned on the side surface of the integrated plastic injection molding extrusion mechanism. According to the plastic part injection molding device, by driving the material returning rod to continuously rotate and reciprocate in the L-shaped pipeline, uniform feeding operation can be achieved, the quality of plastic parts after injection molding is completed is guaranteed, meanwhile, the probability that plastic particles block the interior of the L-shaped pipeline is reduced, and the injection efficiency and effect of the plastic parts are improved.

The utility model relates to an automatic feeding device of a plastic injection molding machine, which comprises a charging barrel, a waste heat preheating component and a control component, the charging barrel is arranged above the output end of the injection molding machine, the charging barrel is communicated with an inner cavity of the injection molding machine, the charging barrel is provided with a charging cavity, a preheating cavity is formed on the inner side wall of the charging barrel, and an air outlet is formed on the side wall of the charging barrel. The waste heat preheating assembly comprises a communicating pipe and an air pump, one end of the communicating pipe communicates with the middle section of the inner cavity of the injection molding machine, the other end of the communicating pipe communicates with the lower portion of the preheating cavity, and the air pump is located on the communicating pipe and used for pumping hot air in the inner cavity of the injection molding machine into the preheating cavity; the control assembly is used for controlling feeding and discharging between the charging barrel and the output end of the injection molding machine and can guide waste heat in an inner cavity of the injection molding machine into the charging barrel preheating cavity to preheat rice in the charging barrel.

The present application belongs to the technical field of injection molding, and discloses a non-contact valve needle glue feeding runner structure, which comprises a heating seat, a glue injection hole, a glue injection cavity and a valve needle, wherein the glue injection hole and the glue injection cavity are arranged in the heating seat, the glue injection hole is communicated with the glue injection cavity, a runner separator is arranged in the heating seat, the runner separator is at least partially arranged in the glue injection cavity, at least one runner for the flow of hot molten glue is formed between the runner separator and the glue injection cavity, a valve needle hole is arranged in the runner separator to separate the glue injection cavity and the valve needle, and the heating seat is at least partially tightly combined with the runner separator to enable the heating seat to perform heat transfer on the runner separator. The present application solves the problem of the insufficient improvement of the hot runner structure for the PET plastic injection molding products with a temperature of 280 DEG C or above in the prior art, which leads to the stress line when the valve needle is sealed and contacts the molten glue of the hot runner, and the high waste rate.

The present invention belongs to the technical field of plastic injection molding, and in particular, relates to an injection mold for plastic parts that is easy to dissipate heat, including an injection molding table, the upper end of which is fixedly connected to a lower mold, the position on the injection molding table located above the lower mold is vertically slidably connected to an upper mold, the upper end of the injection molding table is fixedly connected to a hydraulic cylinder for driving the upper mold; and a cooling and heat dissipation component, the cooling and heat dissipation component including a cooling cavity opened inside the injection molding table. The present invention sets a cooling and heat dissipation component and a flow rate regulating component for coordinated use, and controls the number of teeth on the first gear to adjust the suction and discharge amount of the cooling liquid by the first gear when rotating, so as to adjust the circulation flow rate of the cooling liquid according to the temperature of the lower mold, and adjust the heat dissipation rate of the mold in real time according to the temperature of the mold itself, so that the cooling and heat dissipation of the mold is more uniform, and the quality of the product is improved.

The invention provides a manufacturing method of a badminton racket grip, which is used for manufacturing a main body part, a front sleeve and a rear end cover and combining the main body part, the front sleeve and the rear end cover into the badminton racket grip. A main body part is manufactured by adopting a micro-foaming injection process (MuCell), the main body part comprises an inner core and a shell, the inner core is formed by using a first material through the micro-foaming injection process, the shell is formed on the outer side of the inner core through the micro-foaming injection process by using a second material, and then the main body part and the inner core form an integrated structure; according to the method, the problems that pressure maintaining time is needed in a traditional plastic injection molding process, so that the cooling time and the molding period are shortened, center deviation is likely to happen, and the yield is poor can be solved; according to the invention, the injection molding process of two different materials can be completed on the same micro-foaming double-color injection molding machine, the members made of different materials can provide excellent structural strength, enough rigid support can be provided when the grip is swung, and the effects of cushioning, light weight and the like are achieved.

The invention relates to the technical field of plastic injection molding, and discloses an intelligent management and control system for the whole injection molding process of an automotive trim panel, and the system comprises an entropy sensing unit which directly converts the physical pressure pulsation at a nozzle into a simulated entropy voltage signal; the distributed self-balancing execution unit is used for adaptively adjusting process parameters according to the signal and the injection molding initial pressure change rate; the physical collaboration and health diagnosis unit utilizes the same current loop to achieve inter-unit compensation and evaluate the health state of the actuator online, and by establishing direct physical perception on the flow state of the melt, the dependence of a traditional control mode on preset parameters is avoided; and then through analysis of sensing information in different dimensions, automatic adaptation to material changes and online diagnosis of physical health of the system are achieved, and the operation reliability of the injection molding process is improved.

This invention discloses a fully automatic hybrid electric plastic injection molding machine, comprising: a frame; a mold clamping mechanism for closing and opening the mold; an injection mechanism including a melt cylinder, a feeding screw disposed within the melt cylinder, and an injection drive assembly; an injection stage moving mechanism for driving the injection mechanism to move relative to the mold clamping mechanism on the frame, approaching or moving away from the mold clamping mechanism; a hydraulic mechanism including an oil pump, a hydraulic valve group, and hydraulic lines, wherein the oil pump is connected to the mold clamping cylinder of the mold clamping mechanism and the injection stage moving cylinder of the injection stage moving mechanism via hydraulic lines; an electric drive device for independently driving the feeding screw to rotate to achieve plastic feeding and plasticizing; and a control module electrically connected to the hydraulic mechanism and the electric drive device. This invention can reduce energy consumption, improve plasticizing control accuracy and product quality stability, reduce the load on the hydraulic system and maintenance costs, and achieve deep parallel plasticizing and molding actions to improve production efficiency.

The invention relates to the technical field of computer vision, in particular to a method for automatically identifying and positioning surface defects of a plastic injection molded part, which comprises the following steps of: acquiring a grayscale image of the plastic injection molded part; aiming at any pixel point in the grayscale image, constructing windows with different preset sizes by taking any pixel point as a center, and obtaining a comprehensive importance degree according to a grayscale value difference and a grayscale value correlation degree of the pixel points in each window; establishing a target window, and obtaining the jump degree according to the gray value difference of the pixel points in the target window; according to the comprehensive importance degree and the jump degree, optimizing the initial laplace operator to obtain an optimized laplace operator, and according to the optimized laplace operator, carrying out image enhancement processing on any pixel point; and performing image enhancement processing on each pixel point to obtain an enhanced image, and performing defect detection on the enhanced image to obtain a surface defect area of the plastic injection molding part, so that the accuracy of automatic identification and positioning of the defect area of the injection molding part is improved.

This invention discloses a rotary multi-station bottle cap injection mold for use in the field of plastic injection molding. A circular tube at the corner of the rotating block moves synchronously with the moving mold during switching, thereby sweeping and drying the surface of the stationary mold with hot air. This effectively eliminates condensation caused by temperature differences on the surface of the stationary mold, ensuring injection molding quality after mold closing. Simultaneously, hot air is introduced through a recovery chamber and a return pipe into the preheating chamber inside the moving mold that is about to be switched and closed, realizing the recycling of waste heat and preheating the moving mold before it is to be used. This reduces energy loss caused by the clash of hot and cold, combining the dual functions of drying the surface of the stationary mold and energy-saving preheating. Furthermore, by setting a cleaning component at the end of the feeding pipe and using a pointed block, efficient and stable removal of cold slug plugs is achieved.

The present invention discloses a portable flow manual adjustment device, which relates to the technical field of plastic injection molding. It includes a flow-through seat, a left flow adjustment seat and an adjustment component. A fixed seat is arranged in the middle of the inner side of the flow-through seat, and a hot runner is connected to the top of the inner side of the fixed seat. A cold runner is arranged at the bottom of the inner side of the fixed seat. A right adjustment seat is arranged at the right end inside the fixed seat, and a heating seat is arranged inside the right adjustment seat. The left flow adjustment seat is arranged at the left end inside the fixed seat. By making the scraper extend into the hot runner and the cold runner and cooperating with the left and right displacement of the displacement rod, the solidified plastic can be scraped off from the end positions of the hot runner and the cold runner, which can effectively avoid the blockage when the molten plastic flows, making the injection molding process smoother. In addition, after the scraper extends into the cold runner, the device can adjust the position of the product weld line in the cold runner according to the type of the cold runner, which improves the functionality of the device.

This invention belongs to the technical field of injection molding dies, specifically relating to an injection molding die for medical plastic parts. It includes a mounting plate, with a manifold seat connected to the center of one shaft end of the mounting plate. Multiple pairs of rotationally symmetrical fixed and moving molds are connected to the manifold seat at the end furthest from the mounting plate. The moving molds are all located at the ends of the fixed molds furthest from the manifold seat. Connecting plates are connected to the ends of the fixed molds furthest from the center of symmetry, and linkage gears are connected to these connecting plates. Drive gears mesh externally with the linkage gears. A drive motor and the linkage gears drive the mounting plate, manifold seat, and the multiple pairs of rotationally symmetrical fixed and moving molds. This allows the fixed and moving molds to automatically cycle through the following steps during rotation: mold closing and injection, pressure holding, cooling and molding, and mold opening and unloading. This enables multiple pairs of molds to simultaneously perform different production stages, achieving uninterrupted continuous production, reducing waiting time, and improving production efficiency.

The invention relates to a fan wheel as a component element for an assembly with rotatably movable components, comprising a centrally arranged fan wheel hub and a plurality of fan wheel blades, wherein the fan wheel exhibits an influence on the mass distribution, the influence on the mass distribution being formed by a partial adjustment of the geometry in at least one balancing area of ​​the fan wheel. Furthermore, the invention relates to an assembly with such a fan wheel and to a plastic injection molding process for producing an overmold of a rotor as a first component element for an assembly and for producing a fan wheel as at least a second component element for an assembly.

The utility model belongs to the field of plastic injection molding machine processing, and particularly relates to a drying device for plastic injection molding machine processing, which comprises a base, the top of the base is fixedly connected with a filter assembly, the filter assembly comprises a mounting frame, a collecting frame, a filter plate, a grip, a sliding groove and a sliding block, the inner wall of the mounting frame is provided with the sliding groove, and the collecting frame is fixedly connected with the filter plate. A sliding block is slidably connected into the sliding groove, and a collecting frame is fixedly connected to the outer wall of the sliding block. According to the drying device for processing of the plastic injection molding machine, the effect of filtering plastic is achieved through mutual cooperation of the filtering assemblies, the plastic is placed in the drying box, impurities in the plastic are conveniently filtered through a filtering plate, and therefore the situation that the injection molding effect is affected due to too many impurities in the plastic is avoided as much as possible; and meanwhile, the plastic injection molding quality is improved as much as possible by filtering impurities in the plastic, and the impurities are conveniently collected in a centralized mode by arranging a collecting frame.

The invention relates to a method for producing a fan wheel (1), - wherein the fan wheel (1) has fan blades (3) extending from a hub (2) and a shroud ring (4) surrounding the fan blades (3) at their ends remote from the hub and rotating with the fan wheel (1), - wherein the shroud (4) has radial widenings (16) and locations (18) without radial widenings (16) on a rear edge (7), - wherein the fan wheel (1) is manufactured by means of plastic injection moulding. This allows the fan wheel (1) to be manufactured quickly and cost-effectively.