• How to Make PVC Pipe Fitting Mould

    The PVC Pipe Fitting Elbow are mainly used  as structural parts in automotive and home appliances, such as  Elbow Auto Parts , Vacuum Cleaner Hose Elbow Handle etc. Relatively speaking, vacuum cleaner products are second only to OA office supplies and auto parts in complexity. The following is a set of elbow mold that we have designed and made in house. HS Mold is a leading manufacturer for PVC pipe fitting mold, pipe fitting mould, pvc ball valve mold and pvc pipe fitting mold manufacturers ,pvc plastic pipe fitting mold, pvc pipe fitting injection molding, PP-R molds in house in Dongguan.

    Mold making April 19, 2021
  • How to source a plastic injection molding company in China?

    Plastic injection molding is the process using polymers or plastic resins that when heated, melted and injected under high pressure into a custom injection mold, will produce plastic parts to be utilized in product manufacturing. The manufacturing process can be a complicated one and there are many factors such as industry needs, specifications, end-users time/budget constrains to consider when choosing a plastic injection molder in China that best suits your production requirements. Volume Specialization & Capacity: With more than10000 injection molders of different size all over China, selecting the best injection company for your project can be a chanllenging task. The best is to start with narrowing down your options according to your volume and size requirements. High volume molders specialize in project requiring over 500,000 parts and typically produce parts requiring small-sized molds and press under 350 Ton. Usually the injection machines are equipped with robot systems to increase efficiency while saving more pennies. Low to moderate volume molders…

    Industry news June 10, 2020
  • Footbath housing injection mold

    Product name Footbath housing injection mold Product Material PP Injection molding machine 1000 T Mold base P20 Runner Hot Sprue Cavity 1*1 This is a hot sprue injection mold for Footbath housing injection mold and the materiaL is ABS.And the material of the mold is 738hh HSmold can guarantee a mold life of at least 300,000 PCS. Our factory is equipped with various size of injection machine ranging in tonnage from 55 tons to 610 tons and shot capacities ranging from 1.3 oz to 80 oz. We can meet any of your custom injection molding needs using different types of plastics including ABS, PC, PP, Nylong and so on. We produce custom injection molded finished products and parts for direct shipment to oversea end customers  We produce standard and custom plastic products for various industries including Automotive, House hold application, Medical and more.  HS MOLD is a manufacturer of thermoplastic injection molding services including new product…

    Plastic products April 10, 2020
  • American Plastic Custom Mold

    Product name American Plastic Custom Mold Product Material PA6 Injection molding machine 200 T Mold base P20 Runner Cold Sprue Cavity 1*2 This is a cold sprue injection mold for American Plastic Custom Mold and the materiaL is PA6.And the material of the mold is P20HSmold can guarantee a mold life of at least 200,000 PCS. Our factory is equipped with various size of injection machine ranging in tonnage from 55 tons to 610 tons and shot capacities ranging from 1.3 oz to 80 oz. We can meet any of your custom injection molding needs using different types of plastics including ABS, PC, PP, Nylong and so on. We produce custom injection molded finished products and parts for direct shipment to oversea end customers  We produce standard and custom plastic products for various industries including Automotive, House hold application, Medical and more.  HS MOLD is a manufacturer of thermoplastic injection molding services including new product development,…

    Plastic Injection Mold April 2, 2020
  • Custom tee PA66 pipe mold

    Product name Custom tee PA66 pipe mold Product Material PA66 Injection molding machine 200 T Process Injection molding Runner Cold Sprue Cavity 1X1 This is a cold sprue injection mold for Custom tee PPA pipe mold and the material is engineering plastic PA66 which is high temperature resistant. Our factory is equipped with various size of injection machine ranging in tonnage from 55 tons to 610 tons and shot capacities ranging from 1.3 oz to 80 oz. We can meet any of your custom injection molding needs using different types of plastics including ABS, PC, PP, Nylong and so on. We produce custom injection molded finished products and parts for direct shipment to oversea end customers  We produce standard and custom plastic products for various industries including Automotive, House hold application, Medical and more.  HS MOLD is a manufacturer of thermoplastic injection molding services including new product development, plastic mold design, mold making, custom injection molding, final…

    Plastic products March 4, 2020
  • Injection Mold tryout guideline

    As known, the manufacturing of plastic injection mold determines the quality of plastic molded parts, production effieciency and cost of finished products.Mold trial is run to solve any problems with the design, resin, tooling,machine. Thus procedures of mold trial is very important for a injection molder. Be sure to follow this nine-step process to make sure you’ll be making good parts through a successful trial.   Firstly, Keep the  injection mold run on the press without any resin to verify the function of  the mold    A. Check mold opening and closing condition at low pressure:   Mold should beopened and closed by 3 times at fast, medium and slow speed. During the process, there should be no abnormal sound nor block phenomenon;   Mold opening and closingshould go smooth  without any interference.   B.Checkejection system of the injection mold (at low pressure)   1.Check the ejection action at  fast, medium and slow speed.   2.Check whether ejector pins  or sleeves on the…

    Injection molding process February 17, 2020
  • Coolant Expansion Tank

    This is the bottom of Coolant Expansion Tank for a branded automotive company. The material is PP. The part features with two screws. We could use either automated unscrewing system or hand load inserts to release the screws. Since this part is supplied to the after sales 4s car companies, the quantity is not that big.  We use hand load inserts to save manufacturing cost for clients.  For the water tank, the key technology is the part must be flat without any deform and assembly holes must be aligned perfectly. If there is any warp, the two parts could not be vibrated-welding together and water leaks. In order to solve the issue, firstly we have to run mold flow to do a pre-warp analysis so that the warp degree could be calculated and gate position decided. Mold flow is only an assistant tool in theory. Sometimes, mold flow result differs…

    Plastic products, Uncategorized February 10, 2020
  • Gate Design-HS Plastic Mold Shop

    What proper gate design is important? The gate serves as the entrance to the mould cavity and should be designed to permit the injection mold to fill easily. It is very important to follow below gate considerations while picking gate location at the early stage of plastic mould design. Gates should not be placed where part-bonding or impact will take place in use. The gate area will usually have higher residual stresses than the rest of the part due to the packing that takes place. Therefore, it will be weaker than the rest of the part. Position the gate to minimize trimming problems. Scissor-type gate cutters, kept sharp, will work smoothly and leave no “blemish” marks. If possible, gate into the thickest section to avoid incomplete fill or sink marks. This will also minimize flow marks and distortion associated with setting into a thick section from a thin one. Position the gate so that venting…

    Mold design February 8, 2020
  • How can you make mold slide comes out of lifter?

    It is rare to see the structure of slide coming out of lifter in plastic injection molds. We are not experts, but we just design a typical mechanism that works quite well based on our experience.  Hope that it helps you. Mold Design Concept If we use common mold slide, the steel circled in red get stuck. And the undercut could not be released with this. How to design lifter head?   Green block is lifter with a prominent tail while the purple block is slide which is to release undercut and drive lifter to release undercut downwards. Further explanation on slide out of lifter in plastic injection mold Mold lifter needs a limit screw to limit the stroke of lifter travelling down while the spring is to prevent lifter from moving right with slide The science of structure of slide from lifter   Angel lifter drive slide to move right And…

    Mold design February 6, 2020
  • Top 10 Tooling engineer interview questions 

    Below is a list of general questions to ask during the interview of tooling engineer job in China.  What kind of questions you may meet in your area? What kind of answers do you have for below questions?Welcome for discussion! Answers to be followed!   What steel you use most frequently? What is the difference between NAK80 and S136? If cavity steel is H13, what material shall be used for lifter, why? What is the machining process of plastic injection mold? What causes flash in plastic injection molded parts? What causes void in molding plastic parts? How to solve part sticking to slide issue? What is the function of cooling? What are your biggest strengths? Why we hire you?

    Industry news February 3, 2020
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