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Overmolding is an advanced manufacturing technology, It combines traditional injection molding and coating technology, By incorporating soft materials such as cloth into the injection molding process, Leather or film wrapped on a hard plastic substrate, Form composite products with specific appearance and functionality.
Prototype unique d'usinage CNC
Bond firmly
Flexible design
Production efficace
Our overmolding capabilities
We have an experienced, Skilled R&D and production team, Team members have been working in the plastic mold industry for many years, Familiar with various over injection molding processes, able to quickly, Accurately solve various problems encountered during the production process.
Overmolding is an injection molding process that combines two or more different materials.
During the overmolding process, A material is first injection molded into the base part, Another material, usually one with specific performance or appearance requirements, is then injection molded onto specific areas of the base material, Cover it tightly on the surface or part of the surface of the base material.
1. Closely combined
through precise process control, Can form a strong bond between different materials, Avoid delamination during use, Problems such as falling off.
2. Functional integration
Possibility to combine the advantages of different materials, Par exemple, using hard engineering plastics as a base to provide strength, Then covered with soft elastomer material to increase slip resistance, Shock absorption and other functions.
3. Flexible design
Can be based on different needs of products, Choose from different material combinations and cladding methods, Enable complex shape and structure designs, Meet diverse market needs.
Auto parts field
Automotive interior parts:
Such as the panel of a car center console, By coating a plastic base with a material that has a soft touch and good appearance, Not only improves the aesthetics of the interior, Increased tactile comfort, En même temps, it can also meet the wear resistance requirements of automobile interior parts, Light resistance, Performance requirements such as resistance to temperature changes.
Electronic products field
Mobile phone cases and accessories:
Mobile phone casings can be overmolded, Combines a hard plastic shell with a soft rubber or silicone material, While providing the overall structural strength of the mobile phone, Improve grip feel, And it provides a certain buffering protection when the phone is accidentally dropped.
Medical equipment field
Medical instrument housing:
Housings for some portable medical testing equipment, Over-injection molding can be used to coat the surface of the shell with antibacterial materials or materials with good chemical stability. Ensure that equipment does not contaminate patients or test samples during use, En même temps, it meets the needs of medical equipment that is easy to clean, Disinfection resistance and other requirements.
Household products field
Furniture accessories:
Chair and sofa armrests, Use over-injection molding to cover the armrest surface with soft leather or fabric material, Not only increases the beauty of the furniture, Also provides comfortable support and feel, Make people more comfortable when using furniture.
Sports equipment field
Fitness equipment handles and grips:
like dumbbells, The handle part of fitness equipment such as barbells, Use overmolding to incorporate non-slip, Sweat-absorbent material covers the surface, Can improve the user’s grip strength and stability during exercise, Reduce slippage caused by sweaty hands, It can also reduce hand fatigue and discomfort.
Packaging field
Cosmetic packaging:
Cosmetic bottle cap or part of the bottle body, Through over-injection molding, special textures (such as metallic textures) can be added. matte texture) matériel, Improve the grade and appearance appeal of cosmetic packaging, It also ensures the sealing and durability of the packaging.
Various exquisite over-injection molded parts are placed on the display table. Has car door handle, The outer soft rubber material not only provides a comfortable grip, Also enhanced anti-slip performance. Colorful mobile phone protective cases, Hard plastic base combined with soft silicone covering, Both fall-resistant and beautiful. There are also handles for medical equipment, Special covering material ensures comfort and hygiene during operation. These parts demonstrate the benefits of overmolding, Achieving the unity of function and beauty.
1. Combining the advantages of different materials: Materials with different properties can be combined, Such as coating hard plastic with soft rubber or elastomer, Make the product have the strength and rigidity of plastic, It has rubber anti-slip, Shock absorption and other properties.
2. Improve durability: By choosing the right cladding material, Can enhance the wear resistance of products, Résistant à la corrosion, Impact resistance and other properties, Extend product life.
1. Rich appearance effects: A variety of colors can be achieved, A combination of texture and gloss, Make the product more beautiful, Unique appearance, Improve product market competitiveness.
2. Hide imperfections: For some products with higher appearance requirements, Overmolding can mask surface defects in the base material, Improve the overall quality of your product.
1. Integrated molding: Overmolding can integrate multiple parts into one piece, Reduced assembly process, Improved production efficiency, Coûts de production réduits.
2. Haut degré d'automatisation: Convient à la production de masse, Can use automated production equipment, Improve production stability and consistency.
Product planning stage
1. Clarifier les besoins:
Determine product functionality, Performance requirements and appearance expectations. Par exemple, Is it necessary to be anti-slip, damping, Waterproof and other characteristics, and color, Texture specific requirements.
Consider the product’s usage environment and target market, to choose the right combination of materials.
2. Design feasibility analysis：
Evaluate whether a product’s structural complexity is suitable for overmolding. Check if there are any areas that are difficult to achieve coverage, such as too deep a groove, Sharp corners, etc..
Communicate with engineers and moldmakers, Make sure the design is technically feasible, and understand possible manufacturing constraints and challenges.
Material selection stage
1. base material:
Choose a strong enough, Base material for stiffness and heat resistance, to support the entire product structure. Common base materials include engineering plastics, Abs, PC etc.
Consider the compatibility of base and cladding materials, Make sure the two work well together.
2. Covering material:
Choose appropriate coating materials according to the functional requirements of the product. Par exemple, For products that require anti-slip, rubber or elastomer materials can be selected; For products that need to be beautiful, plastic materials with special textures or colors can be selected.
Consider the fluidity of the cladding material, Properties such as shrinkage and hardness, To ensure that the base material can be evenly covered during the injection molding process.
Mold design stage
1. Parting surface design：
Reasonable design of parting surface, Ensure that the product can be smoothly released from the mold, En même temps, avoid obvious marks on the parting surface.
For overmolding, The design of the parting surface should consider the flow direction and filling method of the cladding material, To ensure the quality of the cladding layer.
2. Gate location selection:
Determine the appropriate gate location, To ensure that the plastic can evenly fill the mold cavity. For overmolding, The gate location should be selected to allow the coating material to fully flow and evenly cover the base material.
Consider gate type and size, To control the flow speed and pressure of plastic, Avoid spraying, Defects such as flow marks.
3. Cooling system design：
Design an effective cooling system, To ensure that the product can be cooled quickly after injection molding, Shorten production cycle. For overmolding, The cooling system should consider the cooling needs of both the base material and the cladding material, Avoid product deformation or dimensional deviation due to uneven cooling.
Injection molding process parameter setting stage
1. temperature control:
Set the appropriate injection temperature, Includes melting temperatures of base material and cladding material. Excessive temperatures may cause the material to decompose or discolor, If the temperature is too low, it may affect the fluidity and filling performance of the material.
Control mold temperature, To ensure the cooling speed and quality of the product. For overmolding, Mold temperature control is particularly important, Because it will affect the bonding strength between the coating material and the base material.
2. Pressure and speed control:
Adjust injection pressure and speed, To ensure that the plastic can fully fill the mold cavity, and avoid short shots, Defects such as flash edges. For overmolding, Pressure and speed parameters need to be optimized based on the properties of the cladding material and product structure.
Control holding pressure and time, to compensate for the shrinkage of the plastic during cooling, Ensure product dimensional accuracy.
3. time control:
Determine the appropriate injection molding time, Cooling time and demoulding time. Injection molding time should be long enough, To ensure that the plastic fully fills the mold cavity; Cooling time should be determined based on the size and material properties of the product, To ensure that the product is fully cooled; The demoulding time should be carried out after the product has cooled to sufficient strength, Avoid deformation or damage.
Contrôle d'apparence
1. Contrôle d'apparence:
Check the appearance quality of the product, including color, Glossiness, Does the texture meet the requirements, and whether there are surface defects such as flow marks, bubble, Sink marks, etc..
For overmolding, En particulier, check the uniformity of the cladding and the strength of the bond, Make sure there is no delamination or peeling.
2. Dimensions:
Use measuring tools to accurately measure product dimensions, Ensure product dimensional accuracy meets design requirements. for key dimensions, Strict control and testing should be carried out.
Consider material shrinkage and deformation factors, Make appropriate compensations and adjustments during the design and production process.
3. Performance testing:
Performance testing based on product functional requirements, Such as mechanical property testing (tensile, flexion, impact, etc.) Heat resistance test, Corrosion resistance test, etc..
For overmolding, The bonding strength of the cladding to the base material should also be tested, And the performance stability of the product under different environmental conditions.
Que vous ayez besoin d'un petit nombre de pièces ou 10000 Plusieurs objets de production qui sont finalement mis en service, L'usinage CNC est une méthode de fabrication idéale. Voici les services CNC personnalisés que nous lançons.
By Rapidefficient, Vous pouvez compléter la fabrication de produits en peu de temps, afin de pouvoir entrer rapidement sur le marché.
La fabrication efficace des moisissures est un moyen rentable, Capable de combler l'écart entre la production d'échantillons et la production de masse. Laissez rapidement vos produits occuper le marché.
Pour les projets personnalisés, Notre équipe professionnelle vous aidera à obtenir les meilleurs produits en termes de qualité et d'efficacité.
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Poor bonding between cladding layer and base material
Performance: The cladding peels off easily from the substrate, Weak binding force.
raison: Mauvaise sélection de matériaux, Injection molding process parameters are inappropriate, Unreasonable mold design, etc..
Défauts de surface
Performance: Flow marks appear, bubble, Surface problems such as sink marks.
raison: Injection molding speed is too fast or too slow, Uneven temperature, Unstable pressure, Surface rugueuse du moule, etc..
Écart dimensionnel
Performance: Product size does not match design requirements, Tolerance out of range.
raison: Mold manufacturing accuracy is not high, Injection molding process parameters are unstable, Changes in material shrinkage, etc..
Color difference
Performance: The color of the cladding layer is inconsistent with the base material, Or there may be differences in color between different batches of products.
raison: Pigments are unevenly dispersed, Material batches are different, Changes in injection molding process parameters, etc..
Poor bonding between cladding layer and base material
Choose the right material combination, Make sure both have good compatibility.
Optimize injection molding process parameters, such as increasing the temperature, increase pressure, Extend the holding time, etc., Enhance bonding force.
Improve mold design, Increase the roughness of the joint, Set up special structures etc., Improve bond strength.
Défauts de surface
Adjust injection speed and pressure, Évitez d'aller trop vite ou trop lentement, Ensure plastic flows smoothly.
Optimize mold temperature control, Evenly distribute temperature, Évitez la surchauffe ou le refroidissement local.
Améliorer la qualité de la surface du moule, polissage, Reduce surface roughness.
Add exhaust system, Evacuate the gas in the mold promptly, Prevent bubbles from forming.
Écart dimensionnel
La conception de pièces n'est pas dans notre portée en tant que fabricant de contrats, Mais nous pouvons fournir des conseils sur la conception de la fabrication (DFM). via dfm, Nous pouvons vous conseiller sur la façon d'optimiser votre conception, Réduire les coûts tout en conservant les fonctionnalités.
Color difference
Ensure pigments are evenly dispersed, Methods such as premixing or increasing mixing time can be used.
Strictly control material batches, Try to use materials from the same batch.
Stable injection molding process parameters, avoid temperature, Changes such as pressure affect color.
Material compatibility
1. The problem of combining different materials: Choosing the right combination of base and cladding materials is critical. If the chemical properties of two materials, Rétrécissement, There is a big difference in liquidity, etc., May cause poor binding, Issues such as delamination or cracking.
2. Differences in thermal expansion coefficients of materials: when the temperature changes, Different materials have different coefficients of thermal expansion, May cause stress concentration, Affects the dimensional stability and bonding strength of the product.
Process complexity
1. Precise process parameter control: Overmolding requires precise control of injection temperature, pression, Speed and other parameters, to ensure uniform coating, Covers the base material flawlessly. Small changes in parameters can have a significant impact on product quality.
2. Sequence and time control of multi-material injection molding: For overmolding involving multiple materials, The injection molding sequence and time need to be reasonably arranged, To avoid interference and adverse effects between different materials.
trois、Mold design requirements are high
1. Complex mold structure: In order to achieve good coating effect, Molds often require the design of complex runner systems, Parting surface and demoulding mechanism. This increases the difficulty and cost of mold manufacturing.
2. Mold cooling and heating system design: Due to the different cooling and solidification characteristics of different materials, Need to design efficient cooling and heating systems, To ensure product quality and production efficiency.
Quality control is difficult
1. High appearance quality requirements: Overmolded products usually have higher requirements on appearance quality, such as surface smoothness, color uniformity, No defects etc.,This requires strict quality control and testing methods.
2. Difficulty in internal quality inspection: Regarding the bonding strength between the cladding layer and the base material, Internal defects and other issues, Detection is difficult, Advanced non-destructive testing technology is required.
Cost and efficiency balance
1. High mold cost: Complex mold structures and high-precision manufacturing requirements lead to higher mold costs. This may not be economical for small batch production or rapid product replacement.
2. Production efficiency improvement challenges: The process complexity of overmolding may affect production efficiency. How to improve production efficiency while ensuring product quality, is a problem that needs to be solved.
Nos services d'usinage CNC ont été félicités par des clients mondiaux de différents domaines。Nous fournissons des composants d'usinage CNC à une variété d'industries，Couvre les éléments suivants et plus
Pièces de grande taille, Comme les pare-chocs ABS usinés CNC, Cuteau d'instruments PC / ABS et pièces automobiles de précision, Réflecteur par exemple, lentille, Assemblage du volant, moteur, transmission.
Pièces de robot pour l'industrie de la robotique et de l'automatisation, actuateur, effecteur final, Moteur, Équipement de contrôle automatique, Luminaires et boîtiers.
Plaque d'os en acier inoxydable ou en titane, prothèse, équipement respiratoire, dispositif portable, équipement de diagnostic, modèle anatomique, Composants pour les besoins médicaux tels que les instruments chirurgicaux.
Moteur aérodynamique, corps, turbine, frein, pièces de pneu, système d'éclairage, Pompe à vide et pièces de pompe à carburant.
Produits de consommation, comme les boîtiers d'équipement électronique, bouton, poignée, Bouton, changer, Appareils numériques portables, Produits de cuisine, équipement sportif.
Nouvelles composantes de l'industrie de l'énergie, par exemple. échangeur de chaleur, soupape, pipeline, Pompes et accessoires, Composants hydrauliques, Composants de la batterie, composants du panneau solaire, Cadre et roue.
Logement électronique, tapis roulant, attache, connecteur, Composants du générateur, luminaires, Pièces de machines et d'outils pour les machines industrielles.
Les modèles réels peuvent être créés en fonction des exigences de semi-conducteurs, Modèles d'ingénierie et autres équipements expérimentaux, Nous travaillons avec des universités du monde.
