Introduction to Plastic Auto Parts Sensor Injection Mold
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KRMOLD plastic auto parts sensor injection molds produce a wide range of auto sensor injection parts, including those for temperature sensor, pressure sensor, oxygen sensor, speed sensor, position sensor, acceleration sensor, and light sensor. KRMOLD high-quality auto sensor parts injection molds produce precise and durable automotive sensor components designed to improve vehicle safety, performance, and comfort, ensuring optimal performance for every vehicle during driving.
As a professional manufacturer of plastic auto parts sensor injection molds, KRMOLD has accumulated extensive experience in the design and manufacture of auto sensor parts injection molds. KRMOLD team can provide customized plastic auto parts sensor injection mold design services based on specific customer needs, ensuring the quality and performance of the final product.
Working Principle of Auto Sensor Parts Injection Mold
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KRMOLD plastic auto parts sensor injection molds utilize advanced injection molding technology. The injection molding machine injects heated and molten plastic into the mold cavity. After the auto sensor parts injection mold closes, the plastic cools and solidifies under specific pressure and temperature, ultimately forming an automotive sensor plastic part that conforms to the shape of the mold cavity. After plastic auto parts sensor injection mold opening, the molded plastic part is ejected by an ejector mechanism. This process is efficient and precise, ensuring high-quality production of automotive sensor injection parts.
Parameter of Plastic Auto Parts Sensor Injection Mold
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| name | Auto sensor parts injection mold |
| color | white,black,green,nature,blue,yellow,etc |
| material | PP, PA,PC,PPT,ABS,PA+GF,POM,PE,UPE,PTFE,etc |
| mould cavity | single cavity & multi cavity |
| runner system | hot runner and cold runner |
| equipment | CNC, EDM, cutting off machine,plastic machinery etc |
| mould material | P20/ 718H/ S136H/ S136 hardened/ NAK80 |
| injection machine | 30T,50T,60T,80T, 90T, 120T, 168T, 200T, 380T |
| mould life | 500000-5000000 shots as per customers' requirement |
| size | customized |
| tolerance | ± 0.01mm |
| shape | as per your drawing or the sample |
| certification | IATF 16949 and relate whole set professional test report |
| free sample | available |
| advantage | one stop procurement |
Advantages of Auto Sensor Parts Injection Mold
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1. High production efficiency
KRMOLD plastic auto parts sensor injection molds are particularly suitable for mass production, enabling rapid molding of high-quality automotive sensor plastic parts. This high-efficiency production capacity not only meets the automotive industry's demand for large-scale production but also significantly shortens delivery cycles, allowing customers to meet market demands promptly.
2. High dimensional accuracy
KRMOLD auto sensor parts injection molds can precisely control the dimensions of plastic parts, ensuring the stability and consistency of product quality. This high-precision characteristic meets the stringent requirements of sensor assembly, avoiding assembly problems caused by dimensional errors.
3. Capable of molding complex shapes
KRMOLD plastic auto parts sensor injection mold design can manufacture sensor plastic parts with complex shapes and internal structures. For example, sensor components with various slots, bosses, and other structures can all be precisely realized using KRMOLD auto sensor parts injection molds.


Key Design Considerations for Auto Sensor Parts Injection Mold
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1. Precision design for auto sensor parts injection mold
(1) Dimensional Accuracy Requirements
When designing plastic auto parts sensor injection mold, KRMOLD engineers accurately calculate and determine the dimensions of the mold cavity and core based on the dimensional tolerance requirements of the automotive sensor injection parts. Automotive sensor injection parts typically have extremely high dimensional accuracy requirements, making auto sensor parts injection mold dimension accuracy crucial. KRMOLD employs high-precision machining equipment, such as CNC machining centers, with micron-level precision, to ensure plastic auto parts sensor injection mold dimensional accuracy.
(2) Form and Position Accuracy Design
Auto sensor parts injection mold form and position accuracy includes shape accuracy and positional accuracy. The shape accuracy of the mold cavity must precisely match the design requirements of the automotive sensor injection parts. Advanced 3D modeling software is used for mold cavity design and simulation analysis to ensure the smoothness and accuracy of the surfaces. During machining, KRMOLD staff utilize EDM and high-speed milling processes to ensure high precision in the cavity shape. Furthermore, positional accuracy primarily involves the relative positional relationships between various components within the plastic auto parts sensor injection mold. High-precision positioning devices, such as precision positioning blocks and tapered positioning pins, are used to ensure that the positional accuracy between components is within the allowable tolerance range.
2. Parting surface design for auto sensor parts injection mold
(1) Parting Surface Location Selection
The location of the parting surface has a critical impact on the quality and appearance of precision injection molded automotive parts. KRMOLD engineers avoid placing the parting surface in important areas of the injection molded part's appearance or in critical areas affecting its function. Furthermore, considering the demolding method of the injection molded part, the parting surface should facilitate smooth demolding. By combining side core pulling or inclined ejector mechanisms, it is ensured that the injection molded part can be smoothly ejected from the mold during the mold opening process, avoiding deformation or damage caused by uneven demolding force.
(2) Parting Surface Shape Design
The parting surface can be in various forms, such as a plane, inclined plane, or curved surface. KRMOLD engineers rationally design the parting surface shape based on the shape and structural characteristics of the plastic auto parts sensor injection molded parts. Meanwhile, KRMOLD engineers also focus on the sealing of the parting surface to prevent molten plastic from overflowing during injection molding. By designing a reasonable parting surface sealing structure, such as using sealing grooves and sealing rings, they ensure that molten plastic does not leak from the parting surface during high-pressure injection molding, thus preventing leakage and ensuring the quality and dimensional accuracy of the molded parts.

KRMOLD Auto Sensor Parts Injection Mold Manufacturing Process
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-Mold Design: Based on the design requirements, dimensional accuracy, and production volume of the automotive sensor plastic parts, and taking into account factors such as injection molding machine specifications and plastic material properties, the plastic auto parts sensor injection mold structure, dimensions, and details of each component are designed.
-Machining: Using CNC machining, EDM (Electrical Discharge Machining), wire cutting, deep hole drilling, and other processes, the raw materials such as mold steel are machined to manufacture various parts.
-Fitter Assembly: Fitters grind and assemble the machined parts, checking the smooth movement of ejector pins, sliders, and other components, and ensuring there are no interference issues with the auto sensor parts injection mold.
-Polishing and finishing: Using tools and materials such as sandpaper, oilstone, and diamond paste, polish the product's exterior surfaces and other areas of the plastic auto parts sensor injection mold parts to improve the mold surface quality and ensure the appearance of the plastic parts.
-Inspection and trial molding: Conduct trial molding using an injection molding machine to check whether the auto sensor parts injection mold operates normally and whether the product structure and quality meet the standards. Provide a trial molding process parameter report, etc.
-Mold modification and repair: Based on the trial molding results, if there are problems with the product, adjust and modify the plastic auto parts sensor injection mold to meet production requirements.
Specificare il tipo di plastica (ad esempio PP, ABS) e i requisiti di post-elaborazione (ad esempio spruzzatura, serigrafia) e fornire disegni di parti in plastica 2D o 3D. Allo stesso tempo, fornire il volume di produzione, i requisiti di aspetto, gli standard di tolleranza, ecc.
In generale, i nostri ingegneri inizieranno a preparare il preventivo subito dopo che il cliente avrà fornito i requisiti di produzione completi. Di solito ci vogliono circa 1-3 giorni.
Il lead time per gli stampi a iniezione normali è solitamente di 30-60 giorni, e potrebbe essere più lungo per gli stampi complessi. Ad esempio, il lead time tipico per gli stampi in silicone liquido è di circa 60 giorni, coprendo progettazione, produzione, test dello stampo, ecc.
Tecnologia di lavorazione ad alta precisione: per ottimizzare il processo di progettazione, in combinazione con il software CAD/CAM, vengono utilizzate apparecchiature ad alta precisione come centri di lavorazione CNC (CNC) ed elettroerosione a tuffo (EDM). Controllo qualità: ispezione delle dimensioni principali dello stampo mediante macchina di misura a coordinate (CMM) e verifica di più lotti di campioni durante la fase di stampaggio di prova. Selezione del materiale: utilizzare acciaio per filiere con elevata resistenza all'usura (ad esempio H13, S136) e trattamento superficiale (ad esempio nitrurazione, cromatura) per i dadi delle filiere per prolungarne la durata.
Dopo ogni 50.000 stampi, controllare il pilastro guida, il perno di espulsione e altre parti soggette a usura e pulire la plastica residua e la ruggine sulla superficie dello stampo. Utilizzare grasso ad alta temperatura per le parti scorrevoli (ad esempio, parte superiore inclinabile, cursore) per ridurre la perdita di attrito. Assicurarsi che il circuito dell'acqua sia liscio e che la differenza di temperatura sia ≤5℃ per evitare crepe nello stampo dovute a stress termico.
Il costo dei materiali dello stampo ha rappresentato circa il 30-40% (ad esempio, 1 tonnellata di acciaio P20 costa circa 20.000 yuan), i costi di lavorazione hanno rappresentato oltre il 50% (tariffa oraria della manodopera CNC di circa 80-150 yuan/ora). La produzione in piccoli lotti può scegliere uno stampo in alluminio o semplificare la progettazione strutturale; per oltre 100.000 pezzi si consiglia di utilizzare inserti in carburo per migliorare la durata!
I prodotti a iniezione in stampo devono soddisfare pienamente i requisiti di progettazione (come dimensioni, aspetto) e possono essere una produzione continua e stabile. La marcatura dello stampo, i report di ispezione (come il test di durezza del materiale) e i disegni tecnici devono essere completi.
L'acciaio per stampi (come S136H, NAK80 e altri materiali importati costano di più) e il tipo di embrione dello stampo (il costo a breve termine dello stampo in alluminio è basso ma la durata è breve) influiscono direttamente sul costo; l'uso della tecnologia di progettazione CAD/CAE/CAM, del sistema a canale caldo, ecc. aumenterà l'investimento iniziale, ma può aumentare i vantaggi a lungo termine (come la riduzione delle materozze, l'aumento della capacità produttiva).