870 results about "Injection molding process" 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 invention discloses a deep reinforcement learning optimization method for injection molding process parameters, and belongs to the technical field of intelligent manufacturing. The method comprises the following steps: constructing a dynamic causal graph network through information entropy flow analysis and transfer entropy calculation, and revealing a causal relationship and time delay characteristics among process parameters; manifold learning is adopted to map a high-dimensional parameter space to a low-dimensional manifold, and Riemannian metric guide optimization search is constructed based on the quality gradient; generating enhanced state representation fusing causal association and manifold geometric information; identifying a production element state and selecting a corresponding optimization strategy; a geodesic line is planned in a manifold space to obtain an optimal parameter adjustment path; historical experience is utilized through memory retrieval and case adaptation; cross-task knowledge migration is realized; adopting a depth deterministic strategy gradient algorithm to optimize the decision; and online learning is realized through elastic weight consolidation. According to the method, the problems of black box decision, slow convergence, difficulty in knowledge reuse and the like in the prior art are solved, the optimization efficiency and the interpretability are improved, and the method has the capability of quickly adapting to new tasks.

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

The invention discloses a material flow collaborative distribution system for a double-color injection mold of an automobile connector, relates to the technical field of intelligent manufacturing equipment, and can solve the technical problems of inaccurate regulation and control in the injection molding process and easy generation of a bonding line defect, and the material flow collaborative distribution system comprises the following steps: obtaining production monitoring data in the production process of the double-color injection mold; according to time sequence monitoring parameters in the production monitoring data, abnormal data generated by temporary interference are identified and eliminated, and abnormal state parameters are obtained; wherein the abnormal state parameter is used for representing a real process abnormal state after the temporary interference is eliminated; according to the abnormal state parameter, screening out a historical similar state similar to the current production process from the historical production monitoring data, and determining the interference degree on the defect of the bonding line in the current production process according to the historical similar state; determining a current regulation and control demand according to the interference degree; and a regulation and control instruction is generated according to the current regulation and control requirement, and an execution mechanism is driven according to the regulation and control instruction to adjust the melt propelling speed.

The invention relates to the field of technological parameter monitoring, in particular to a sealing element injection molding machining technological parameter monitoring method and system. The method comprises the following steps: collecting each technological parameter of injection molding processing of the sealing element, and calculating a temperature-pressure cooperation coefficient of each processing period; analyzing the proportion of the difference condition of the process parameters to obtain a change factor of each process parameter, constructing a process change vector, and calculating the process similarity of each processing cycle; the method comprises the following steps of: calculating a coupling stability tensor at each acquisition moment on the basis of a temperature-pressure cooperation coefficient and a process similarity, constructing a coupling deviation degree, modifying a measurement distance in a DBSCAN density clustering algorithm to obtain a clustering result, obtaining abnormal process parameters on the basis of the clustering result, and completing monitoring on the injection molding processing process parameters of the sealing element; the machining process parameter monitoring efficiency is improved, and the monitoring effect is improved.

The invention discloses an electric toothbrush injection molding intelligent monitoring method and system based on sensing feedback, and relates to the technical field of intelligent monitoring. The method comprises the following steps: carrying out node region division on an electric toothbrush injection molding machine to obtain N injection molding process node regions, and deploying a multi-modal sensor group; injection molding process data streams of N nodes are collected and accessed to an RS485 communication network to perform data communication transmission between the multi-mode sensor group and the injection molding control center; the injection molding control center carries out molding prediction simulation and abnormal defect identification, and injection molding abnormal defect parameters are determined; and injection molding self-adaptive monitoring feedback is carried out, injection molding abnormal feedback parameters are obtained, and molding optimization control is carried out. The technical problem that in the prior art, the injection molding quality of the electric toothbrush is unstable is solved, intelligent recognition and self-adaptive feedback control over abnormal molding are achieved by conducting multi-mode sensing monitoring on the injection molding process, and the technical effect of improving the stability of the injection molding quality is achieved.

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 relates to the technical field of process control, in particular to an injection molding process optimization method and device, computer equipment and a storage medium, and the method comprises the following steps: obtaining stress signals of four tie bars of an injection molding machine, calculating a total mold locking force, and preprocessing the stress signals through temperature compensation and moving average filtering; real-time mold cavity pressure is calculated based on a mold filling stage linear model, a pressure maintaining stage quadratic function model and a cooling stage exponential attenuation model triggered by an injection molding machine control signal; generating a standard curve template with a confidence interval according to the characteristic parameters of the qualified sample, and dynamically updating the standard curve template; and comparing the current pressure curve with a standard template output quality judgment result in real time, and triggering automatic parameter adjustment to form closed-loop control. The device and the method have the effect of solving the problems of high cost, poor compatibility and difficulty in maintenance when the pressure of the die cavity is directly measured.

The present disclosure relates to a system and method for monitoring an injection molding process which may calculate injection time and packing time by attaching an acceleration sensor to an injection molding mold with bolts and measuring an amplitude change of a vibration signal of a mold during injection molding, detect mold closing and opening signals of the mold using a magnetic hall sensor, and monitor the injection molding process by measuring cycle time and cooling time, thereby simplifying installation and maintenance and reducing installation costs.

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.

Methods and kits of materials and supplies for restoring teeth by an injection molding process and / or mold overlays in situ in a patient's mouth so as to correct the imperfect teeth of the patient's dentition. The imperfect teeth are corrected by applying restoration materials using a mold of a corrected model of the patients dentition placed over the imperfect teeth. Adjacent teeth may be covered with a polymer release material prior to injection molding of teeth to be corrected, such that the teeth to be corrected have at least one tooth between them draped with the polymer release material to provide a space adjacent to each of the corrected teeth. The corrected teeth are then covered with the polymer release material in a second round of treatment and restoration material is applied to one or more previously covered teeth to provide a first layer which simulates the dentin layer of teeth. Thereafter a simulated enamel layer is applied over the dentin layer using one or more alternating molds and yet another simulated incisal layer is applied over the enamel layer using one or more alternating molds employing the techniques described.

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 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 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 invention discloses a shell interior trim part injection molding staged compression injection mold which is characterized in that a mold cavity used for molding a product is formed by closing a front mold core, a rear mold core and a thin-wall mold core, the thin-wall mold core is fixedly connected to a compression mold, and during mold closing, the front mold core, the rear mold core and the thin-wall mold core are firstly subjected to primary mold closing and injection molding; then the thin-wall mold core is subjected to compression mold closing to form a thin-wall area; the invention further discloses an injection molding process of the shell interior trim part injection molding staged compression injection mold, and the injection molding process comprises the following steps that the mold is closed, and a gap is formed between the rear mold and the compression mold; injection molding: carrying out injection molding according to the percentage of the mold cavity after compression mold closing to the mold cavity after primary mold closing; die assembly is continued, and gaps are eliminated; forming is conducted; opening the mold; the product is ejected out; and taking out the product. According to the shell interior trim part injection molding staged compression injection mold and the injection molding process, injection molding compensation is conducted on the mold cavity, and the product forming quality is guaranteed.

The disclosure generally relates to poly alpha-1,3-glucan compositions and articles containing them. In particular interest is comprising poly alpha-1,3-glucan ester derivatives. The poly alpha-1,3-glucan derivatives are useful in thermoprocesses and in particular, injection molding processes.

The invention discloses an application of a BOPP (Biaxially-oriented Polypropylene) film in preparation of a draw-bar box shell, and the draw-bar box shell with a multi-layer composite structure is formed by compounding a multi-layer BOPP film serving as a main body layer and a lining layer through a hot press molding process. According to the invention, the BOPP film commonly used in the packaging field is creatively applied to the box body structural member, the BOPP film lamination hot press molding replaces the traditional PP injection molding process, and the modular design of the combined layer structure and the collaborative innovation of the hot press process are combined, so that the prepared draw-bar box shell realizes the balance of high strength and light weight, and has no cracking phenomenon when falling at a low temperature of-30 DEG C, and the service life of the draw-bar box shell is prolonged. The low-temperature performance is excellent, and meanwhile, the production suitability and the color control precision are improved.

The invention relates to a talcum powder filled polypropylene composite material based on surface modification and process cooperation and an injection molding pocking mark defect inhibition method. The material is composed of co-polypropylene, acidic salt-titanate composite modified talcum powder, flaky mica (5-10 [mu] m), a POE flexibilizer, a zeolite molecular sieve, an MAH-g-PP compatilizer, a zinc stearate dispersant and the like. According to the invention, the three measures of surface modification treatment, formula design and process purification technology are combined, and the problem of pitting defects (surface pits and white spots) generated in the injection molding process of the talcum powder filled polypropylene composite material is mainly solved. Through filler surface modification treatment, formula design and a process purification technology, the hard spot defect rate is reduced by about 85%, and the method is suitable for products with high surface quality requirements, such as automobile bumpers and instrument panels.

The invention relates to the technical field of injection molding, and provides an environment-friendly silicon plastic product rapid injection molding device which comprises an injection molding machine frame, a partition frame and an injection barrel, raw material extrusion equipment is arranged on one side of the injection molding machine frame, the partition frame is fixedly connected to the middle of the injection molding machine frame, and the partition frame is divided into a plurality of mounting cavities; a fixed mold and a movable mold are arranged in each mounting cavity, the movable molds slide in the mounting cavities, the material injection barrel communicates with the output end of the raw material extrusion equipment, a plurality of raw material discharge channels communicate with the circumference of the side wall of the material injection barrel, and the raw material discharge channels communicate with the corresponding fixed molds; by means of the technical scheme, the injection molding machine solves the problem that in the injection molding process of the silicon plastic raw materials through an injection molding machine in the prior art, after the silicon plastic raw materials are cooled, formed and taken out, the next round of injection molding operation can be conducted again.

The present application relates to the field of guide rail, provide a kind of self-lubricating linear guide based on two steel ball structure, including slide rail, slider body, rotator, steel ball and dustproof sheet, slider body is slidably connected on slide rail;Arc clearance structure is opened in slider body, and rotator is embedded in arc clearance structure;Rotary passage is opened in rotator, and ball return hole is opened in slider body, and self-lubricating coating material is sprayed on the inner wall of ball return hole, and rotary passage and ball return hole form wireless circulation channel, and steel ball is filled in wireless circulation channel;Dustproof sheet is made using injection molding process, and dustproof sheet is provided with two, and dustproof sheet is provided with two connecting columns, four connecting holes are opened in slider body, and four connecting columns are respectively and four connecting holes interference fit.The present application simplifies structure and reduces cost, cancels screw fixed end cover and dustproof sheet step, reduces process, reduces production cost, and rotator is embedded in arc clearance structure, so that guide rail can withstand higher movement speed and use load.

This invention discloses a two-color injection molding process for Tritan material, belonging to the field of injection molding technology, which solves the problem of easy delamination and fusion lines in two-layer injection molding of the same Tritan material. The injection mold used in this process includes a male mold, a first injection mold, and a second injection mold. The workpiece includes a transparent inner layer and a transparent outer layer. The steps include: S1. Injecting molten Tritan raw material into the first injection mold heated to 100-130°C to form a transparent inner layer; S2. Cooling the first injection mold to 35-50°C, after mold opening, the transparent inner layer remains in the male mold and rotates 180 degrees to close with the second injection mold, so that the residual temperature of the transparent inner layer is maintained at 35-50°C; S3. Injecting molten Tritan raw material into the second injection mold heated to 100-130°C to form a transparent outer layer on the outer wall of the transparent inner layer; S4. Cooling and solidification; S5. Demolding. This invention achieves molecular chain diffusion and entanglement at the interface of inner and outer layer materials by precisely controlling the temperature of two injection molding processes, resulting in a product with strong interlayer bonding, high transparency, and rich visual effects in a single molding process.

This invention discloses a hot runner system and a stacked mold. The hot runner system includes a first hot runner assembly and a second hot runner assembly. The first hot runner assembly is disposed in the fixed mold, and its runner is connected to the gate of the second cavity. The second hot runner assembly is disposed in the intermediate mold, and its runner is connected to the gate of the first cavity. When the moving mold, intermediate mold, and fixed mold of the stacked mold are closed, the runners of the first and second hot runner assemblies are connected to form a continuous runner structure, and the molten injection material enters the runner of the second hot runner assembly through the runner of the first hot runner assembly. This invention, by optimizing the arrangement and feeding path of the hot runner system, maintains the high output advantage of the stacked mold while effectively improving the balance, stability, and reliability of the injection molding process.

The utility model discloses a fixing plate which comprises a sleeve and a positioning block. An arc-shaped plate is arranged in the sleeve, and a cover plate is arranged at the top of the sleeve; the positioning block is arranged at the bottom of the arc-shaped plate, and empty grooves used for limiting are formed in the two sides of the positioning block correspondingly; a supporting structure is arranged on one side of the arc-shaped plate and located in the sleeve. According to the utility model, the boss is arranged in the supporting structure and is propped against a mold during injection molding, so that the top of the fixing plate is effectively prevented from being bent inwards; the thickness of the fixing plate body is sequentially reduced from bottom to top, so that BMC materials are increased in the injection molding process, a mold cavity can be more fully filled with more BMC materials, and the appearance of a stator formed through injection molding is more perfect; the BMC crushed aggregates are reduced after the cover pressing, which is benefited from the reasonable structural design of the fixing plate, and the reduced BMC crushed aggregates do not generate extra vibration and friction during the operation of the motor, so that the noise of the motor is effectively improved, and the abrasion and fault of parts caused by overlarge noise are reduced.

The utility model discloses a full -automatic embedded part injection molding takes out piece packaging machine belongs to injection molding machine technical field, it includes work table, work table top fixed mounting has fixed mould, the fixed mould is buckled and is connected with embedded part main part, the sliding block with the guide rail sliding connection, the sliding block is located between the guide rail with the embedded part main part, the guide rail is the inclined structure, the utility model discloses through the heat absorption block absorption external heat like the heat source of mould processing, the heat transfer to first air cylinder, and the heated expansion gas (like nitrogen) in first air cylinder and second air cylinder expands in volume because temperature rises, and pressure increases, and the telescopic link of movable block outside pushes the sliding block and slides on the inclined guide rail, because the guide rail is the inclined structure, the sliding of sliding block will produce the component force along the guide rail direction, and then will embedded part main part extrude to the inboard of fixed mould, avoids in the injection molding process and causes the displacement of embedded part to influence injection molding effect.

This invention relates to the field of intelligent monitoring technology, and discloses an intelligent monitoring system and method for injection molding processes using injection molds. The system includes: acquiring synchronous operation signals from mold opening to the ejection window, mapping their time series to an ejection relative stroke reference system constructed based on the ejector plate displacement; calculating the deflection resistance trajectory bending degree based on the normalized derivative transformation of the extracted force relative to the relative stroke reference system; extracting morphological parameters and demolding work offset, and combining them to construct a state vector; constructing a classification space using a reference sample library, and optimizing a preset classifier using a particle swarm optimization algorithm; inputting the state vector to be measured into the classifier to output the continuous anomaly probability and the abnormal fluctuation work amount; and finally calculating the work concentration point and mapping it to the corresponding mold condition node. This invention can overcome the limitations of the time domain and rigid thresholds, identify abnormal demolding actions within a very short window early, and achieve precise positioning.

This invention provides a high-performance implantable biomedical product based on polylactic acid (PLA) and its preparation method. The preparation method, by weight, involves first melt-blending 10-20 parts of polybutylene adipate succinate (PSA) with 1-2 parts of hydroxyapatite to obtain a PBSA / HA mixture; then mixing 78-89 parts of PLA with PBSA / HA and extruding the mixture via a twin-screw extruder to obtain PLA / PBSA / HA granules; finally, using a micro-injection molding process to prepare the high-performance implantable biomedical product. This method induces a strong shear field through micro-injection molding, enabling in-situ fiber formation of the PBSA dispersed phase within the PLA matrix. Simultaneously, the addition of a specific amount of hydroxyapatite significantly enhances the product's toughness, resulting in a product with excellent biocompatibility and osteoinductive activity.

The application relates to the technical field of automation control, and discloses a method and system for controlling an automobile interior injection molding process. The method comprises the following steps: synchronously collecting pressure pulsation signals, flow rate distribution data and flow front position information of plastic melt through a high-frequency pressure pulsation sensor array and a melt flow rate sensor, performing fast Fourier transform processing on the pressure pulsation signals to obtain characteristic frequency components, calculating flow impedance coefficients and shear stress distribution parameters in combination with the flow rate data, comparing the impedance coefficients with reference values to identify abnormal types, calculating pressure compensation amounts through a classification compensation algorithm, and finally performing rapid pressure regulation by a servo hydraulic execution system. The application solves the technical problem that plastic melt flow impedance characteristic changes cannot be identified in real time and injection pressure cannot be dynamically compensated in the existing automobile interior injection molding process.

The utility model relates to the technical field of MEMS device packaging, and particularly discloses a strip-shaped clamp for an MEMS device, and the MEMS device comprises an MEMS sensor and a special integrated circuit needing to be subjected to an injection molding process; the strip-shaped clamp comprises a frame part and a central part; the central part comprises a plurality of parallel long strip parts which are arranged at intervals; the two ends of each long strip part in the plurality of long strip parts are respectively connected with the frame part so as to form a plurality of strip-shaped openings; the corners of the strip-shaped opening are arranged to be fillets; and under the condition that the MEMS device is arranged below the strip-shaped clamp, the strip-shaped opening is used for exposing an application-specific integrated circuit of the MEMS device so as to carry out an injection molding process, and the strip-shaped part is used for covering an MEMS sensor of the MEMS device. According to the strip-shaped clamp, the cleaning difficulty can be reduced, the manufacturing cost can be reduced, the influence of sputtered resin points in the injection molding process on the performance of the MEMS device can be effectively prevented, and the packaging yield of the MEMS device is effectively improved.