519 results about "Plastic injection molding" patented technology

The invention provides a mold injection control method and device for electric toothbrush plastic molding, and relates to the technical field of plastic injection molding.The method comprises the steps that geometric data of an electric toothbrush and physical performance data of a plastic part are obtained, and an electric toothbrush mold model is initialized; initializing particle swarm parameters, performing material flow path optimization, and performing iteration to obtain an optimized mold model; injection molding simulation is conducted, and mold injection molding performance influence parameters are obtained; constructing an injection molding control strategy library, and performing matching retrieval to obtain a matched injection molding control strategy; selecting interval division is conducted, and a mold injection molding control strategy parameter interval is obtained; constructing a fitness function; global optimization is carried out, target mold injection control strategy parameters are determined, and mold injection control over electric toothbrush plastic forming is carried out. The technical problems that in the prior art, injection molding parameter optimization is always started after mold manufacturing is completed, and control parameters are adjusted through trial and error, so that cost is high, and efficiency is low are solved.

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 discloses a multi-objective optimization method for injection molding process parameters. The method comprises the following steps: firstly, obtaining a simulation result data set based on Moldflow simulation analysis and CCF; then, an NGO-XGBoost is adopted to construct an injection molding quality optimization model; then explaining and analyzing the NGO-XGBoost model by using an SHAP method to obtain importance and positive and negative influences of each optimization design variable on a prediction quality optimization target, and performing multi-target optimization through MOMVO to obtain a Pareto leading edge; and finally, determining an optimal combination of process parameters through a CRITIC-TOPSIS evaluation method. According to the method, the buckling deformation and the volume shrinkage of the ABS plastic injection molding plastic part can be effectively reduced, so that a high-quality ABS plastic part product is obtained, and a theoretical basis and data support can be provided for obtaining an optimal technological parameter combination of ABS plastic injection molding.

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 product processing, and discloses a plastic injection molding machine for plastic product processing and an injection molding method thereof.The plastic injection molding machine comprises a base, an air pressure box is fixedly connected to the side wall of the base, an electric telescopic rod is fixedly connected to the inner wall of the air pressure box, and the electric telescopic rod generates extension force to force a first mold to make contact with a second mold; at the moment, an electric telescopic rod generates contraction force to drive a piston block to move towards the base along the inner wall of an air pressure box, internal air enters a slope pipe through an exhaust groove, along with the first blocking block, the first blocking block drives a fixing block to synchronously move outwards through a first sliding rod, and the fixing block drives one end of a first prying rod to tilt upwards; the rotating blocking block is driven to rotate synchronously with the connecting point as the center, a gap is formed between the rotating blocking block and the air outlet disc, internal air is discharged outwards through the gap between the rotating blocking block and the air outlet disc, a traditional push-out rod is removed through the application of the components, and the outer wall of the material is not prone to deformation or even damage.

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 invention discloses a quick ejection mechanism and an ejection method for an injection molding car lamp mold, and relates to the technical field of plastic injection molding, the ejection mechanism comprises: an ejector pin which is arranged in a lower mold and can move up and down, one end of the ejector pin facing a cavity is provided with a sleeve head, and the sleeve head is made of a heat insulation flexible material; a gap is formed between the upper mold core and the upper mold plate, the upper mold plate is provided with a positioning pipe, the upper mold core is provided with a sleeve, the positioning pipe extends into the sleeve, the outer wall of the end, extending to the sleeve, of the positioning pipe is spherical, a supporting piece is arranged in the upper mold plate, and the supporting end of the supporting piece makes contact with the upper mold core and changes the deviation angle of the upper mold core relative to the axis of the injection molding opening. When an injection molding part is ejected, the problem that traces appear on the surface of a vehicle lamp due to the fact that the ejection force of the ejector pin is large is avoided, when demolding ejection is conducted, the ejection force applied to the surface of the vehicle lamp by the ejector pin is reduced, and clamping swing on the top of the vehicle lamp is combined.

The invention discloses a deburring device for an injection molding part of a plastic packaging box, and relates to the technical field of deburring of plastic injection molding parts, the deburring device comprises an abrasive belt deburring machine and a detection winding mechanism used for detecting breakage of an abrasive belt, the detection winding mechanism further comprises two sets of material receiving units, and the two sets of material receiving units are arranged in parallel. The material receiving unit is used for winding the broken polishing abrasive belt, a belt replacing mechanism is arranged on the back side of the machine table and comprises a front section and a rear section, the front section is located at the bottom of the machine table, and the rear section is located on the back of the machine table; according to the deburring device for the injection molding part of the plastic packaging box, detection can be conducted at the first time when a grinding abrasive belt is broken through the detection unit, then alternate work of winding the broken abrasive belt is achieved through the material collecting unit, and meanwhile the function of replacing and pulling away a new abrasive belt body can be achieved through the belt replacing mechanism.

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 a pair of novel ice skate shoes. Each novel ice skate shoe comprises a shoe body and an ice skate blade fixedly arranged at the bottom of the shoe body, the shoe body comprises a shoe main body and a split type toe cap, and the shoe main body and the shoe body can be respectively formed by injection molding materials with different colors in an injection molding manner; the surface of the shoe body is provided with decorative patterns and carbon fiber textures which are used for decoration, the decorative patterns and the carbon fiber textures are integrally formed with the shoe body, and the decorative patterns oppositely protrude out of the surface of the shoe body; the ice skate blades are fixedly connected with the shoe body through the ice skate blade seats, the ice skate blades oppositely extend out of the ice skate blade seats, and the exposed width of the ice skate blades is 12 mm after the ice skate blades extend out. According to the utility model, the shoe body is formed by plastic injection molding, so that the shoe body with higher hardness is not easy to deform under the condition that a reinforcing sheet is not required to be additionally arranged, and the structure is simple; meanwhile, the decorative patterns and the carbon fiber textures on the shoe body are integrally formed with the shoe body in an injection molding mode, and processing is relatively convenient.

The invention relates to the technical field of injection molding processing, in particular to an automatic plastic injection molding device. According to the technical scheme, the injection molding machine comprises a base, a rotating disc, an injection pipe, a first motor, a fixed mold, a movable mold and a side frame, a rack is arranged at the upper end of the base, a second motor is arranged at one end of the rack, the rotating disc is arranged at the output end of the second motor, a connecting plate is arranged on the outer wall of a rotating shaft, the side frame is arranged on one side of the connecting plate, and the movable mold is arranged on one side of the side frame. A second spring is arranged between the side frame and the connecting plate, a first spring is arranged between the movable mold and the side frame, a first conical plate is arranged on one side of the upper portion of the base, an injection pipe is arranged on one side of the fixed mold, a material barrel is installed on one side of the upper end of the injection pipe in a communicating mode, and a material pushing screw rod is rotationally installed in the injection pipe. The movable mold and the fixed mold which are distributed in an annular array are matched for use, the mold opening time is reasonably utilized, efficient use of the injection structure is achieved, and the injection machining efficiency is improved.

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 relates to a method for producing a fork which has at least one cavity in the interior and which is made of a thermoplastic for a two-wheeled vehicle by means of a plastic injection molding process and a fluid injection process, having the following steps: closing a configured injection molding tool; injecting a plasticized plastic melt into the closed injection molding tool; injecting at least one fluid into the closed injection molding tool in order to displace the plastic core out of the interior of the fork or in order to fill at least one molding cavity which is introduced into the injection molding tool; cooling the injection molded component; and opening the injection molding tool and removing the fork.

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 relates to the technical field of plastic injection molding, in particular to a plastic injection molding machine which comprises an injection molding machine, and through an energy-saving type base anti-cracking mechanism, when a mold mounting base A and a mold mounting base B of which the outer surfaces are provided with injection molds are attached to each other, the mold mounting base A and the mold mounting base B can be automatically fixed; during cooling, the injection molding opening A can be automatically sealed through the injection molding rod-free injection molding mechanism, so that plastic rods are prevented from appearing on a finished product, and through the technical scheme, the production steps are reduced, and meanwhile, a hydraulic air cylinder does not need to be started all the time in the injection molding process; when a plastic injection molding machine is used, in order to prevent mutually attached molds from being separated due to internal force, a hydraulic air cylinder and hot melt plastic located in a mold cavity need to be started all the time for cooling; and hot melt plastic which is located in the injection molding opening and connected with the injection molding opening is cooled along with the injection molding opening, so that a plastic rod is formed on the outer surface of a finished product.

The utility model discloses a mounting structure of a motor and a reduction gearbox, which comprises the motor and the reduction gearbox, a plurality of raised riveting claws are punched at positions, used for mounting the reduction gearbox, of a casing of the motor, the reduction gearbox is formed by plastic injection molding, a clamping groove is arranged at a position, corresponding to each raised riveting claw, of the reduction gearbox, and the motor is arranged in the clamping groove. The protruding riveting claws penetrate through the clamping grooves and then are bent and fixedly riveted to the reduction gearbox body. According to the utility model, through the optimization of the structure, the installation screw hole sites of the motor casing and the reduction gearbox body are cancelled, and four (or more) raised riveting claws are added for fixing the single motor and the reduction gearbox body, so that the structure is compact, the size of the motor is reduced, and the interference possibility of the original raised screw hole sites in the installation process is effectively reduced; meanwhile, screws are omitted, so that the production cost of the speed reducing mechanism is reduced to a certain extent, motor mounting steps are simplified, and the productivity of the speed reducing mechanism is directly improved.

The outdoor lamp comprises a bottom shell and a plurality of sealed lamp bodies, the bottom shell is provided with an annular side wall, and the sealed lamp bodies are distributed on the annular side wall; each sealing lamp body comprises a lamp shell, a sealing lamp panel arranged in the lamp shell and a sealing lampshade buckled with the lamp shell in a sealed mode through a waterproof ring. As the light source of the outdoor lamp comes from the plurality of sealed lamp bodies, and each sealed lamp body is independently waterproof, the waterproof performance of the outdoor lamp can be effectively improved, materials and processes for manufacturing the outdoor lamp are not limited to metal castings, the outdoor lamp can be manufactured by plastic injection molding, and the service life of the outdoor lamp is prolonged on the premise of obtaining better waterproof performance. The weight and the manufacturing cost of the outdoor lamp are effectively reduced, and the outdoor lamp is more flexible and convenient to transport and assemble; in addition, the reliability of the outdoor lamp can be effectively improved due to the multiple light sources.

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 utility model discloses a plastic injection molding mold, which relates to the technical field of plastic injection molds and comprises a bottom plate, an upper cover plate is arranged above the bottom plate, an injection molding mechanism is arranged in the upper cover plate and comprises an upper mold, the upper mold is fixedly mounted on the inner wall of the upper cover plate, and the upper cover plate is fixedly mounted on the inner wall of the upper mold. A feeding opening is formed in the top of the upper mold, sliding grooves are formed in the two sides of the feeding opening correspondingly, connecting plates are slidably connected into the sliding grooves, the connecting plates are of L-shaped structures, second springs are fixedly connected to the tops of the connecting plates, and the ends, away from the connecting plates, of the second springs are fixedly connected to the sliding grooves; and a baffle is fixedly mounted at the bottom of the connecting plate. According to the utility model, the feed port is blocked by the baffle plate, so that the problems that liquid plastic flows back into the injection pipe, the amount of plastic actually injected into the cavity is reduced, a molded plastic product is uneven in hardness, insufficient in strength or poor in toughness and the like are solved.

The invention discloses a plastic injection molding machine, and belongs to the field of plastic injection molding. A plastic injection molding machine comprises a machining table, a storage tank is fixedly connected to the top of the machining table, a lower mold disc is rotatably connected to the top of the machining table, multiple sets of injection molding grooves are formed in the top of the lower mold disc at equal intervals, and the plastic injection molding machine further comprises an injection molding module arranged on the machining table and used for achieving continuous injection molding machining; according to the invention, the core rod is lifted upwards through gas thrust generated by the repulsion effect of the fixed magnetic plate and the movable magnetic plate, so that the stirring paddle rotates by cooperating with the sliding effect of the friction plate and the friction wheel, the stirring and mixing effects are effectively improved, and after the lifting effect on the core rod is relieved, the stirring paddle rotates under the action of gravity, so that the stirring and mixing effects are improved. And the friction plate can quickly fall down along with the core rod to drive the stirring paddle to rotate again, and the stirring paddle is vibrated, so that bubbles in the plastic slurry are discharged upwards, and the quality of an injection product is improved.

The invention discloses plastic injection molding equipment and method, and belongs to the technical field of injection molding. Plastic injection molding equipment comprises a workbench with an injection mold assembly, a melting injection pipe and a feeding cylinder, the melting injection pipe is fixedly connected to the workbench, the injection end of the melting injection pipe communicates with the input end of the injection mold assembly, and a spiral lifting mechanism is arranged in the feeding cylinder. The sprayed hot air can help to evaporate moisture on the surfaces of the plastic particles, reduce the moisture content, prevent the moisture-containing plastic from generating vacuum bubbles in a molten state, prevent bubbles or air holes from being formed in the formed plastic tray, and improve the strength of a finished product; and redundant heat in the cooling liquid can be transferred into the feeding barrel to heat air, redundant heat in the injection mold assembly is recycled, waste of heat resources is reduced, and energy consumption of the cooling circulating pump can be reduced.

The utility model belongs to the technical field of injection molding feeders, and particularly relates to an ultra-high molecular plastic injection molding feeder which comprises a feeding cylinder and an opening and closing component, the feeding cylinder comprises a hot melting cylinder body, through cavities are symmetrically formed in the side wall of the hot melting cylinder body, through holes penetrating through the side wall of the hot melting cylinder body are formed in the two ends of each through cavity, and the opening and closing component is arranged in the through holes. The four opening and closing components are arranged on the side wall of the hot melting barrel and correspond to the four through holes respectively, a feeding component is arranged in the feeding barrel, and a storage component is arranged on the outer wall of the feeding barrel. When injection molding is carried out, materials in the feeding cylinder are injected into an injection mold through the feeding component, after feeding is completed, the opening and closing component enables the middle of the hot melting cylinder to be communicated with the through cavity, the materials in the feeding cylinder are driven by the feeding component to form circulation, and the phenomenon that the temperature of feed liquid is not uniform when liquid injection is not carried out is avoided.

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 invention discloses a plastic product injection molding mold, relates to the technical field of plastic injection molding processing, and solves the problems that for softening operation of plastic raw materials, due to the fact that the plastic raw materials are different in size, part of the plastic raw materials cannot be softened completely when the softening operation is carried out in a heating mode, and the like. And the quality of the plastic product after injection molding is poor is solved. The plastic product injection molding mold comprises a base, a pretreatment box, an integrated plastic cyclic crushing mechanism, a heating extrusion assembly and an automatic injection molding assembly, the pretreatment box is installed at the top of the base through a support, and the pretreatment box is arranged at the top of the heating extrusion assembly. According to the plastic raw material crushing device, when the crushing roller rotates to crush plastic raw materials, the circulating screw rod and the discharging blades can be synchronously driven to operate, the plastic raw materials are circularly crushed for multiple times and the crushed plastic raw materials are pushed automatically, and the production and processing efficiency of plastic products and the quality of finished plastic products are improved.

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.

Device (1) for the simultaneous actuation of a plurality of shut-off needles (32) in needle shut-off nozzles (42) of a plastic injection molding machine comprising a mounting plate, which extend from a hot runner manifold (10) through an intermediate plate (6) of the plastic injection molding machine to an injection mold (8), wherein the shut-off needles (32) are received at their end opposite the injection mold (8) together on a lifting plate (12), which, in the direction of movement of the shut-off needles (32), can be moved by an actuator (16) from a release position, in which liquefied plastic material from the hot runner manifold (10) is injected through the injection openings of the needle shut-off nozzles (42) into the injection mold (8), towards the injection mold (8) to a closing position, in which the flow of the plastic material through the injection openings of the needle shut-off nozzles (42) is interrupted, wherein the lifting plate (12) is supported on a frame (14) which is movable transversely to the direction of movement of the locking pins (32) and which is movable along a guide by the actuator (16), wherein the guide comprises two parallel guide grooves (22) which are formed in the mounting plate (2) of the injection molding machine in a plane perpendicular to the direction of movement of the locking needles (32), and in which the frame (14) is supported via guide rollers (20), characterized by that the lifting plate (12) is supported on the frame (14) via toggle levers (18), that the guide rollers (20) of the frame (14) are each received in a recess (60) within an arm (24) of the frame (14), and that between two recesses (60) a further recess (62) is provided in which one end of a toggle lever (18) is received.

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.