3087 results about "Injection moulding" patented technology

The invention belongs to the technical field of PBT plastic particle injection molding, and particularly relates to a precise injection molding process control system for PBT plastic particles. The control system is composed of the following modules: a material characteristic sensing and modeling module, a multi-physical field simulation and parameter generation module, a distributed optical fiber global sensing module, a predictive closed-loop control module, and a digital twinning and full-period optimization module. The material characteristic sensing and modeling module is used for acquiring microscopic parameters of PBT raw materials through a near infrared spectrum sensor and constructing a material characteristic dynamic model; raw material characteristic fluctuation is pre-judged through near infrared spectrum dynamic modeling, technological parameter drift is predicted in advance in combination with an LSTM neural network, and feed-forward compensation is started before deviation is formed; compared with post correction in the prior art, the mechanism has the advantages that the parameter fluctuation control precision is improved, and the prevention efficiency for the problems of hydrolytic degradation, internal stress concentration and the like which are prone to occurring in PBT is improved.

The mold injection control method comprises the steps that three-dimensional point clouds of a current injection molding part and an adjacent previous injection molding part are obtained, the global difference degree between the current injection molding part and the adjacent previous injection molding part is calculated through overall registration, if the global difference degree exceeds a threshold value, a difference mask is generated and covers a real-time image of a cavity, a difference image is formed, and the difference image is subjected to injection molding. And performing hybrid clustering on the difference image and a known defect type database to obtain candidate defect types and membership degrees, calculating posterior probability contribution degrees of the sensing nodes to the candidate defect types by taking the membership degrees as input and combining a Bayesian reasoning algorithm, if the contribution degree of any sensing node exceeds a threshold value, outputting a defect root cause report, and if the contribution degree of any sensing node exceeds the threshold value, outputting a defect root cause report. And a machine table or a mold execution mechanism is driven to carry out correction. According to the invention, the problems of low detection efficiency, large subjective deviation and lagging root cause judgment due to the fact that automobile part defect detection and root cause analysis depend on manual visual detection or single-dimensional automatic detection are solved.

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 carrier of a camera module, a manufacturing method and the camera module, the carrier of the camera module comprises a main body, the main body comprises a plurality of side parts, each side part is arranged around the optical axis of the camera module, a corner part is formed at the joint of two adjacent side parts, and the main body is subjected to first injection molding and has first rigidity; the insert is wrapped on the main body, and the insert is made of a metal material; the buffering part is formed at the corner part through secondary injection molding, the buffering part comprises a buffering section, the buffering section protrudes out of the surface of the main body in the movement direction of the carrier, the buffering part has second rigidity, and the second rigidity is smaller than the first rigidity. Through the first injection molding and the second injection molding, high integration of the main body, the insert and the buffer part can be realized, in other words, the integration of the carrier can be improved, the overall size of the carrier is effectively reduced, meanwhile, the supply chain and the assembly process of the carrier are simplified, the production efficiency of the carrier and the camera module is improved, and the manufacturing cost is reduced.

The application discloses a notebook shell lightweight structure injection molding equipment and relates to the technical field of plastic processing and injection molding. The notebook shell lightweight structure injection molding equipment comprises two bottom plates, a front mold frame, a rear mold frame, a front mold base, a rear mold base and a fixed plate. The front mold frame is fixedly arranged on the front mold frame bottom plate and is provided with a positioning guide column fixedly arranged on the front mold frame. The rear mold frame is fixedly arranged on the rear mold frame bottom plate and is slidably connected with the front mold frame through the positioning guide column. The front mold base is fixedly installed on the front mold frame and is internally provided with a cavity one. The rear mold base is fixedly installed on the rear mold frame and is internally provided with a cavity two. The cavity two can be combined with the cavity one to form an injection molding cavity. The fixed plate is slidably arranged on the rear mold frame bottom plate and is provided with a plurality of air-assisted ejector pin assemblies fixedly arranged on the fixed plate. The air-assisted ejector pin assembly comprises a guide rod and a push rod. The notebook shell lightweight structure injection molding equipment can guarantee the consistency of the demolding effect of each position of the mold, improve the product stability and the yield.

The invention relates to the technical field of magnetic material injection molding, and discloses an injection molding magnetic powder orientation optimization method and system based on rheology-magnetic field coupling. The method comprises the following steps: deploying a distributed sensing network at key positions of a mold runner and a mold cavity, and synchronously capturing dynamic viscosity change gradient and magnetic field intensity space distribution of a melt in real time in a filling process. The captured data are input into a multi-physics field coupling simulation engine based on micromechanics, an instantaneous orientation vector field of the magnetic powder in the cavity is obtained through calculation, then an orientation order degree topological graph is constructed through tensor analysis and an image algorithm, and a weak orientation area and the boundary of the weak orientation area are accurately recognized. And finally generating a composite regulation and control instruction of the magnetic field and the injection parameters according to an identification result. According to the method, online diagnosis and active compensation regulation and control of the orientation state of the magnetic powder can be realized, and the orientation uniformity and consistency of the injection molding magnet are improved.

The utility model discloses a mould with a sliding block structure, which belongs to the technical field of injection moulds and comprises a fixed mould, a bottom plate, a movable mould, a plurality of sliding components and a cooling component, the movable mould is connected to the left side of the fixed mould in a sliding manner, the bottom plate is arranged on the lower side of the fixed mould, the sliding components are mounted in the movable mould, and the cooling component is arranged on the bottom plate. The cooling assembly is installed on the lower side of the movable mold, the sliding assembly comprises fixed blocks, side edge blocks, sliding blocks and a connecting plate, the multiple fixed blocks are fixedly installed in the movable mold, the multiple side edge blocks are fixedly installed in the movable mold, arc-shaped grooves are formed in the side walls of the fixed blocks and the side edge blocks, the grooves are used for containing lubricating agents, and the sliding blocks are connected with the connecting plate. And the sliding block is connected between the fixed block and the side block in a sliding manner. By means of the mode, cooling liquid can be automatically injected and discharged along with a mold, the cooling efficiency during injection molding is improved, and abrasion of the sliding block is reduced by arranging the arc-shaped groove structure.

The utility model discloses an assembly of an electronic component and a camera module. The assembly comprises a base, a substrate, a circuit structure and the electronic component. The circuit structure comprises an insulating layer and a circuit line formed on the insulating layer, the circuit structure is fixedly connected to the substrate, and the insulating layer is spaced between the substrate and the circuit line; the electronic component is conductively connected to the circuit line and is fixed on the substrate at the same time; the base, the substrate, the circuit structure and the electronic component are integrally formed through one-time injection molding. Therefore, one-time injection molding is adopted for the assembly, the injection molding frequency is small, the production cost is low, the production efficiency is high, the substrate, the circuit structure and the electronic components can be combined into a whole, the thickness and the size of the assembly are greatly reduced, and the requirement for product miniaturization is met. Meanwhile, the electronic component can be conveniently attached and welded to a circuit on the surface of the substrate through the SMT technology, the welding effect is good, and the product yield is high.

Provided are a short-cut carbon fiber composite (SCFC)-high strength steel (HSS) hybrid bionic structure battery box and its integrated forming method. A SCFC-HSS hybrid bionic structure lower box body includes a lower box framework made of high strength steel and a SCFC lower box matrix; and an upper box body and the lower box are connected by bolts to form a complete SCFC-HSS hybrid bionic structure battery box. A high strength steel lower box framework scheme is designed based on the principle of bionics, then welding and surface treatment are carried out to obtain a bionic lower box framework structure, and the bionic lower box framework structure is placed in a mold for integrated injection molding using a SCFC matrix material.

An injection molding system is provided. A mixing unit is configured to mix a flowable polymeric material with a blowing agent to form a mixture. A fluid supply unit is configured to provide the blowing agent to the mixing unit. The fluid supply unit includes an injection outlet coupled to the mixing unit, a compressor configured to generate the blowing agent, an injection valve disposed between the injection outlet and the compressor and configured to receive the blowing agent from the compressor through a first passage, and a cleaning mechanism configured to clean the injection valve. The cleaning mechanism includes a control valve coupled to the compressor through a second passage and coupled to the injection valve through a third passage connected to the first passage, and an actuating device configured to actuate the control valve. The blowing agent is flowable to the injection valve through the control valve.

The invention relates to the technical field of injection molding, and discloses a high-precision adjustment dust collector injection molding part body injection molding process which comprises the following steps: before a melt enters a mold cavity, obtaining a feed-forward signal representing the physical performance of the melt through an online melt quality characterization (IMQ) system, and obtaining a feed-forward signal representing the physical performance of the melt based on the feed-forward signal; a dynamic valve needle fine tuning (DVM) system is used for applying rheological state intervention to the melt about to enter the cavity at a pouring gate; and on the basis of the feedforward signal, a local thermal field on the surface of a mold cavity is instantaneously and dynamically regulated and controlled through a dynamic energy field (AZT) active cavity system. By arranging the online melt mass characterization (IMQ) system, a feed-forward signal of performance fluctuation of the melt is obtained before the melt enters a cavity, the problem of continuous waste caused by adjustment lag in a traditional process is fundamentally solved, and high stability and process consistency of a dust collector injection molding part body in the continuous production process are ensured.

The invention discloses a high-wear-resistance modified polypropylene material and a preparation process thereof. The material comprises the following components in parts by weight: isotactic polypropylene, a beta nucleating agent, a heterofunctional hexagonal boron nitride nanosheet, an elastomer, an antioxidant system and a surface migration accelerant, one side of the nanosheet is treated by amino silane, and the other side of the nanosheet is treated by fluorine-containing silane. The material is prepared through twin-screw melt blending granulation and injection molding, in the molding process, variable mold temperature is adopted, contact pressure is applied to the surface of a product to promote directional migration and orientation of nanosheets in a cortex area, and then annealing is conducted. The Janus structure and the surface migration accelerant cooperate to realize a fluorine-containing low-surface-energy self-lubricating surface layer with an outward surface; the beta nucleating agent induces beta crystal formation to improve toughness. The scheme has the advantages of simple process and easily available raw materials, and is suitable for polypropylene products with higher wear resistance requirements, such as automotive interiors and household appliance shells.

The utility model belongs to the technical field of thermal management, and discloses a runner plate structure, a cooling system and an automobile, the runner plate structure comprises a runner plate assembly, the runner plate assembly is an injection molding element, the runner plate assembly comprises a runner plate body and a water valve body, the runner plate body is provided with a first connecting port, and the water valve body is provided with a second connecting port. The water valve body is provided with a second connecting port, and the second connecting port is communicated with the first connecting port. The water valve body and the runner plate body are integrally formed in an injection molding mode, the connection sealing performance of the water valve body and the runner plate body is improved, leakage of cooling liquid in the circulation process between the water valve body and the runner plate body is avoided, the connection between the water valve body and the runner plate body does not need a radial sealing ring, an end face sealing ring and a bolt any more, and therefore the sealing performance of the water valve body and the runner plate body is improved. Therefore, the problem of leakage of the cooling liquid caused by mismatching of the sizes of the end face sealing ring, the radial sealing ring and the bolt is avoided.

According to an aspect, there is provided a method (100) of manufacturing a communications component for an attachment assembly of an oral care device, the method comprising: creating (102) an antenna assembly; and fitting (110) the antenna assembly to a cold-formed metal ring. Creating (102) the antenna assembly comprises forming (104) a base of the antenna assembly using an injection moulding process; positioning (106) an antenna on the base; and forming (108) a cover over the base and the antenna using an injection moulding process.

The invention discloses a thin-wall shell plastic part injection molding process parameter multi-objective optimization method, which is based on an RIME-RF-MOGWO framework, takes a simulation sample as a research object, selects a volume shrinkage rate and a buckling deformation amount as optimization objectives, and firstly adopts SMOTE to process a data imbalance problem; establishing a nonlinear mapping relation between the process parameters and the quality target by using RF; an RIME is introduced to optimize the hyper-parameter of the RF; multi-objective optimization of process parameters is realized in combination with MOGWO, and a Pareto frontier solution set is obtained through non-dominated sorting and a congestion degree control mechanism. A multi-round optimization and simulation verification result shows that the multi-objective optimization method for the injection molding process parameters of the thin-wall shell plastic part can effectively obtain an optimal process parameter combination, the volume shrinkage rate is reduced by 19.02%, the buckling deformation amount is reduced by 50.63%, and the molding quality of the thin-wall plastic part can be remarkably improved.

The invention provides injection molding equipment for air conditioner production and an air conditioning system, and relates to the field of injection molding equipment. The injection molding equipment for air conditioner production comprises an injection molding device, a moving assembly, a rotating device, a clamping mechanism, a cutting structure and a conveying device. The moving assembly is arranged above the injection molding device in a suspended mode and used for driving the rotating device to move along the X axis, the Y axis and the Z axis, and the rotating device is used for adjusting the pitching angle of the clamping mechanism. According to the injection molding equipment for air conditioner production, the material taking mechanism is used for achieving alignment of a cutter and a pouring gate aggregate in the process of taking out a product, and in the process of placing an air conditioner shell on the conveying device, a pillow plate on a side plate of the conveying device is matched, the pouring gate aggregate can be rapidly cut through a cutting structure, and the production efficiency is improved. And extra manual taking-out or additional arrangement of a cutting station for cutting treatment is not needed.

An interchangeable stock panel insert system for attaching accessories to a firearm such as a long gun comprises an elongated stock formed of synthetic material including a forestock configured to support a receiver of the firearm. The forestock includes an internal longitudinal cavity forming an elongated longitudinal aperture at the bottom which provides injection molding benefits described herein to yield more uniform stock wall thicknesses. The forestock includes a singular mounting interface defined at the longitudinal aperture configured to detachably couple a plurality of different stock panel inserts thereto to enclose the bottom aperture and form part of the completed forestock. The panel inserts share a common mounting configuration compatible with the singular mounting interface of the forestock so as to be interchangeably mountable to the forestock. At least some of the stock panel inserts include an accessory rail for mounting various types of firearm accessories thereto.

The invention belongs to the technical field of polymer composite materials, and discloses a large-scale preparation method of a PPS-based composite material with low expansion and high dimensional stability. According to the method, a multi-scale synergistic enhancement system of graphene and nano silicon dioxide is constructed, a maleic anhydride grafted PPS compatilizer is introduced into melt blending, and interface chemical anchoring is achieved through amino-maleic anhydride-epoxy ternary reaction. The filler is premixed according to the mass ratio of 1: 1 after being subjected to surface functionalization, the total content is 15-30 wt%, and the composite material is obtained through twin-screw reactive extrusion and injection molding. The invention provides the large-scale preparation method of the low-expansion high-dimensional-stability PPS-based composite material which is reasonable in structural design, high in process controllability, excellent in performance index and suitable for industrial production, and the problem that thermal expansion suppression and interface strengthening are difficult to consider at the same time in the prior art is solved.

A thermosetting composition for injection molding comprising: (A) a compound represented by the following formula (A2) or (A3), and (B) a thermal polymerization initiator; wherein the composition further comprises no (G) titanium oxide or comprises (G) titanium oxide, when the composition comprises the component (G), the content of the component (G) is 5 parts by mass or less, based on a total of 100 parts by mass of components other than the component (B) and the component (C); and the composition comprises no polybutadiene di(meth)acrylate:

The invention relates to a process for manufacturing a cutting tool for a vegetation cutting machine, such as a brush cutter or an edge trimmer, comprising the following steps: (a) producing by an injection molding process at a first temperature a preform (200) made of a polyamide mixture comprising at least one homopolymer and at least one copolymer; (b) stamping the preform at a second temperature lower than the first temperature so as to cause polymer chains of the polyamide mixture to extend according to at least two different directions, thereby forming a planar piece (201), (c) cutting the planar piece (201) to define at least one cutting edge of the cutting tool (2).

The invention relates to the technical field of samarium-iron-nitrogen permanent magnet material manufacturing, and discloses a digital twinning samarium-iron-nitrogen injection molding process parameter optimization method and system. According to the method, dynamic optimization is realized by integrating the digital twin and the physical production line. And collecting and preprocessing production line real-time sensor data. A digital twin comprising a particle layer, a melt layer and a pole layer is constructed and updated based thereon. By using the twin, the aggregation degree and orientation degree of the samarium-iron-nitrogen particles are predicted in a particle layer, the temperature, shear and magnetic flux distribution are simulated in a melt layer, and the magnetic performance index is evaluated in a magnetic pole layer. According to the prediction and evaluation results, the material temperature, the injection speed, the pulse vibration magnetic field waveform and the pressure maintaining curve are optimized through an artificial intelligence agent model. And finally, the optimized parameters are issued to a production line for execution through the programmable logic controller. According to the method, online self-adaptive adjustment of process parameters is achieved, and the magnet forming quality and efficiency are improved.

The invention discloses an automobile lamp sealing routing integrated forming method, relates to the technical field of precise injection molding and intelligent control, and aims to solve the problems that routing is easy to soften and shift under the impact of a high-temperature melt, and the airtightness of an automobile lamp is easy to damage by traditional mechanical clamping and positioning. A pressure evolution prediction model is constructed; in the injection molding process, the system collects mold cavity data at high frequency to deduce the pressure change trend in advance; when judging that the flow field is about to be unbalanced, asymmetrically adjusting the glue inlet phase difference of each pouring gate, and forcibly remolding a melt flow frontal surface, so that a dynamic constraint state based on pressure balance is formed on two sides of a routing line; according to the invention, on the premise of no mechanical contact, the space stable positioning of wiring is realized, structural pores are avoided, and the air tightness of the product is obviously improved.

The utility model relates to a corrosion-resistant electromagnetic flowmeter. Two ends of the measuring pipeline are respectively provided with a left-end flange and a right-end flange, the measuring pipeline, the left-end flange and the right-end flange are made of engineering plastics and are of an integrated injection molding structure, and an upper measuring electrode and a lower measuring electrode which are longitudinally opposite are arranged in the middle of the top wall and the middle of the bottom wall of the measuring pipeline; the device further comprises a front shell and a rear shell which clamp the measuring pipeline in the middle, coil supports are arranged in the front shell and the rear shell, excitation coils are installed on the coil supports, and the two excitation coils are located in front of the middle of the measuring pipeline and behind the middle of the measuring pipeline respectively. A front half flange plate is arranged at the top of the front shell, a rear half flange plate is arranged at the top of the rear shell, the front half flange plate and the rear half flange plate form a top flange when the front shell and the rear shell are assembled in a butt joint mode, the gauge head is provided with a display screen in the front and a gauge head support at the bottom, and the bottom of the gauge head support is fixedly connected with the top flange. According to the corrosion-resistant electromagnetic flowmeter, the corrosion-resistant capacity is improved on the basis that the structural characteristics of the flowmeter body are guaranteed.

The invention discloses a high-pressure and high-ring-steel triangular steady-state steel framework plastic composite pipeline and a manufacturing system and method thereof, and relates to the technical field of steel framework plastic composite pipeline production, the high-pressure and high-ring-steel triangular steady-state steel framework plastic composite pipeline comprises a warp wire arrangement frame, and a weft wire storage rotating seat is arranged on one side of the warp wire arrangement frame; according to the full-automatic injection molding machine for the steel framework, preheating before injection molding of the steel framework is achieved, then the temperature difference between the steel framework and molten plastic is effectively reduced, the temperature difference between the steel framework and the molten plastic is effectively reduced, and the temperature difference between the steel framework and the molten plastic is effectively reduced; the situation that plastic on the outer side of the steel framework is contacted firstly during injection molding of the steel framework and is rapidly cooled and hardened to influence normal flowing of follow-up molten plastic is effectively prevented, and it is ensured that gaps on the outer side of the steel framework can be fully filled with the molten plastic in the injection molding process; the internal defects in the production process of the steel skeleton plastic composite pipe are effectively removed, and the quality of the steel skeleton plastic composite pipe product is further improved.

The invention relates to the technical field of blending alloys, in particular to a high-temperature and low-temperature cycle cracking resistant polyester alloy suitable for metal insert injection molding and a preparation method and application of the high-temperature and low-temperature cycle cracking resistant polyester alloy. The polyester alloy is prepared from the following raw materials: PBT resin, copolyester, thermoplastic polyester elastomer, a flame retardant, an antioxidant and glass fibers. The polyester alloy provided by the invention can meet the requirements of metal insert injection molding on material performance and molding, and has excellent flame retardant property; meanwhile, the polyester alloy material meets the requirements that a workpiece does not crack in high-low temperature circulation, is stable in size and not prone to deformation, and has outstanding adhesion and combination capacity with a metal insert.

The embodiment of the invention discloses an injection-molded long carbon fiber reinforced polyether-ether-ketone alloy composite material and a preparation method thereof. Nano filler modified polyether-ether-ketone alloy powder is prepared from polyether-ether-ketone, modified resin and a nano modifier; preparing soft and hard sizing agent hybrid modified long carbon fibers from continuous carbon fibers and the prepared sizing solution; nano-filler modified polyether-ether-ketone alloy powder, a deionized water solution containing a surfactant and a thickening agent and soft and hard sizing agent mixed modified long carbon fibers are adopted to prepare long carbon fiber master batches; and carrying out injection molding on the long carbon fiber master batch by adopting an optimized injection molding process to prepare the long carbon fiber reinforced polyether-ether-ketone alloy composite material. The mechanical properties, electric conduction, heat conduction and friction properties of the composite material are greatly improved, and the defects of a polymer material in the aspect of functionality are further made up; moreover, the effective retention length of fibers in the injection molding master batch is greatly increased, the organic solvent is prevented from damaging molecular chain segments of a resin matrix, and the injection molding master batch is more environment-friendly.

The invention discloses an injection molding method of a ball core of a ball valve, a ball valve injection molding method and the ball core of the ball valve.The injection molding method comprises the steps that an inner-layer ball body is formed through one-time injection molding, and the outer diameter of the inner-layer ball body is smaller than that of a standard ball core; and performing secondary injection molding on the outer-layer ball coat on the basis of the inner-layer ball body to obtain a standard ball core. According to the scheme, the ball core is obtained through the two-time injection molding process, the inner-layer ball body is cooled and shaped firstly, then the outer-layer ball coat is subjected to injection molding, and after the inner-layer ball body is shaped, even if the problem that the roundness is poor due to the influence of uncontrollable shrinkage characteristics of materials, the outer-layer ball coat subjected to two-time injection molding can be used for making up for the problem; as the thickness of the outer-layer ball coat is smaller than that of the whole ball core, even if the outer-layer ball coat shrinks after being cooled, the shrinkage degree is smaller, the influence on the roundness of the ball core is smaller, and the purpose of obtaining the ball core with higher outer surface roundness is achieved.

The application discloses a kind of intelligent tray chip embedded injection molding device, it is related to injection molding technical field, to solve the technical problem that chip is susceptible to the fluidity of molten plastic in injection molding process, leading to chip deviates from preset position, including movable mould and fixed mould, fixed mould side is arranged with core feeding assembly, core feeding assembly includes feeding assembly, opening and closing positioning assembly, core feeding clamping assembly and driving assembly, support frame is integrally formed in fixed mould side wall, support frame top is arranged with core feeding groove, chip feeding channel is opened in fixed mould side wall, plastic sleeve is movably arranged in the cavity of opening and closing positioning assembly, a plurality of plastic columns are integrally formed in the side wall of plastic sleeve, the inner cavity of plastic sleeve is used to carry chip main body, and driving assembly includes core feeding cavity head, and core feeding clamping assembly includes first chuck and second chuck.The application has the advantage that the flow of molten plastic can avoid interfering with the position of chip.

The invention relates to the technical field of injection molds, and discloses an injection molding mold for producing an automobile high-voltage wire harness fixing wire duct, the injection molding mold comprises a table body, a movable mold connected with the table body and a fixed mold arranged on one side of the movable mold, a moving mechanism is arranged on the table body, and a supporting mechanism is arranged on the moving mechanism; the supporting mechanism comprises a top plate, a vertical plate and a bottom plate. The top plate is arranged on the moving mechanism. The vertical plate is arranged at the bottom of the top plate; the bottom plate is arranged at the bottom of the vertical plate, a demolding part is arranged on the bottom plate, a first driving mechanism is arranged on the top plate, a clamping mechanism is arranged on one side, close to the movable mold, of the vertical plate, and the first driving mechanism drives the clamping mechanism and drives the pressing mechanism to press the demolding part at the same time, so that the demolding part sprays a demolding agent to the surface of the movable mold or the fixed mold; and meanwhile, the moving mechanism is controlled, the position of the demolding part is changed, so that the demolding agent can uniformly cover the surface of the mold, and the tedious process of manual spraying is omitted through the automatic demolding agent spraying mode.